diff options
Diffstat (limited to 'drivers/media/pci/mgb4')
23 files changed, 4961 insertions, 0 deletions
diff --git a/drivers/media/pci/mgb4/Kconfig b/drivers/media/pci/mgb4/Kconfig new file mode 100644 index 0000000000..f2a05a1c8f --- /dev/null +++ b/drivers/media/pci/mgb4/Kconfig @@ -0,0 +1,18 @@ +# SPDX-License-Identifier: GPL-2.0-only +config VIDEO_MGB4 + tristate "Digiteq Automotive MGB4 support" + depends on VIDEO_DEV && PCI && I2C && DMADEVICES && SPI && MTD && IIO + depends on COMMON_CLK + select VIDEOBUF2_DMA_SG + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER + select I2C_XILINX + select SPI_XILINX + select MTD_SPI_NOR + select XILINX_XDMA + help + This is a video4linux driver for Digiteq Automotive MGB4 grabber + cards. + + To compile this driver as a module, choose M here: the + module will be called mgb4. diff --git a/drivers/media/pci/mgb4/Makefile b/drivers/media/pci/mgb4/Makefile new file mode 100644 index 0000000000..e92ead18be --- /dev/null +++ b/drivers/media/pci/mgb4/Makefile @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0 +mgb4-objs := mgb4_regs.o mgb4_core.o mgb4_vin.o mgb4_vout.o \ + mgb4_sysfs_pci.o mgb4_sysfs_in.o mgb4_sysfs_out.o \ + mgb4_i2c.o mgb4_cmt.o mgb4_trigger.o mgb4_dma.o + +obj-$(CONFIG_VIDEO_MGB4) += mgb4.o diff --git a/drivers/media/pci/mgb4/mgb4_cmt.c b/drivers/media/pci/mgb4/mgb4_cmt.c new file mode 100644 index 0000000000..70dc78ef19 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_cmt.c @@ -0,0 +1,244 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + * + * The CMT module configures the FPGA Clock Management Tile (CMT) registers. For + * different video signal frequencies (FPGA input signal frequencies), the FPGA + * CMT registers need to be adjusted for the FPGA to work properly. The values + * are precomputed based on formulas given by Xilinx in their FPGA documentation + * (which are in turn full of some magic values/tables...). + */ + +#include <linux/types.h> +#include <linux/kernel.h> +#include "mgb4_core.h" +#include "mgb4_cmt.h" + +static const u16 cmt_vals_out[][15] = { + {0x1208, 0x0000, 0x171C, 0x0000, 0x1E38, 0x0000, 0x11C7, 0x0000, 0x1041, 0x01BC, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, + {0x11C7, 0x0000, 0x1619, 0x0080, 0x1C71, 0x0000, 0x130D, 0x0080, 0x0041, 0x0090, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x9000, }, + {0x11C7, 0x0000, 0x1619, 0x0080, 0x1C71, 0x0000, 0x165A, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x11C7, 0x0000, 0x1619, 0x0080, 0x1C71, 0x0000, 0x1187, 0x0080, 0x1041, 0x01EE, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, + {0x1186, 0x0000, 0x1555, 0x0000, 0x1AAA, 0x0000, 0x1451, 0x0000, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x11C7, 0x0000, 0x1619, 0x0080, 0x1C71, 0x0000, 0x134E, 0x0080, 0x0041, 0x005E, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x1619, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x179E, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x179F, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x17DF, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x8800, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x128B, 0x0080, 0x0041, 0x00DB, 0x7C01, 0x7DE9, 0xFFFF, 0x9000, 0x0100, }, + {0x1186, 0x0000, 0x1555, 0x0000, 0x1AAA, 0x0000, 0x1820, 0x0000, 0x0083, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, + {0x1186, 0x0000, 0x1555, 0x0000, 0x1AAA, 0x0000, 0x1187, 0x0080, 0x1041, 0x01EE, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x169B, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x171C, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x1186, 0x0000, 0x1555, 0x0000, 0x1AAA, 0x0000, 0x1515, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x1493, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x15D8, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x124A, 0x0080, 0x0041, 0x010D, 0x7C01, 0x7DE9, 0xFFFF, 0x9000, 0x0100, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x175D, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x1619, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x17DF, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x8800, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x17E0, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x9000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x1820, 0x0000, 0x0083, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x13D0, 0x0080, 0x0042, 0x002C, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x128B, 0x0080, 0x0041, 0x00DB, 0x7C01, 0x7DE9, 0xFFFF, 0x9000, 0x0100, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x1820, 0x0000, 0x00C3, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x134E, 0x0080, 0x0041, 0x005E, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x1515, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x175D, 0x0000, 0x00C4, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x11C7, 0x0000, 0x1041, 0x01BC, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1209, 0x0080, 0x0041, 0x013F, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x1100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1556, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x179F, 0x0080, 0x00C4, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x15D8, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1105, 0x0080, 0x1041, 0x01E8, 0x6401, 0x65E9, 0xFFFF, 0x9800, 0x1100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1820, 0x0000, 0x00C4, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x1493, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x138E, 0x0000, 0x0042, 0x005E, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x17E0, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x9000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x165A, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x175D, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x1187, 0x0080, 0x1041, 0x01EE, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x175E, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x179E, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x134E, 0x0080, 0x0041, 0x005E, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x165A, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x16DC, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x169A, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x11C7, 0x0000, 0x1041, 0x01BC, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x169B, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x171D, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x16DB, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1146, 0x0080, 0x1041, 0x0184, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x171C, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1451, 0x0000, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x171D, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x175D, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1452, 0x0080, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x15D8, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1104, 0x0000, 0x1041, 0x01E8, 0x5801, 0x59E9, 0xFFFF, 0x9900, 0x0900, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x179F, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1515, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x17DF, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x8800, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1659, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1555, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x14D3, 0x0000, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1820, 0x0000, 0x0083, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1556, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1187, 0x0080, 0x1041, 0x01EE, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1452, 0x0080, 0x0082, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x169B, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1514, 0x0000, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x17E0, 0x0080, 0x00C4, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x9000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1515, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x16DC, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1493, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x15D8, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x171D, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1618, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x175D, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x14D4, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1619, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x179E, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x179F, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1515, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x13D0, 0x0080, 0x0042, 0x002C, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x169A, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x128B, 0x0080, 0x0041, 0x00DB, 0x7C01, 0x7DE9, 0xFFFF, 0x9000, 0x0100, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x169B, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1820, 0x0000, 0x00C3, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1556, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x16DB, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1411, 0x0080, 0x0042, 0x002C, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1597, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1451, 0x0000, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x171D, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x12CC, 0x0080, 0x0041, 0x00A9, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x175D, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1452, 0x0080, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x15D8, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x175E, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1492, 0x0000, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x179F, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1619, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1493, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x17DF, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x8800, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x130D, 0x0080, 0x0041, 0x0090, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x17E0, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x14D3, 0x0000, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x165A, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1820, 0x0000, 0x0083, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x14D4, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x169B, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, +}; + +static const u16 cmt_vals_in[][13] = { + {0x1082, 0x0000, 0x5104, 0x0000, 0x11C7, 0x0000, 0x1041, 0x02BC, 0x7C01, 0xFFE9, 0x9900, 0x9908, 0x8100}, + {0x1104, 0x0000, 0x9208, 0x0000, 0x138E, 0x0000, 0x1041, 0x015E, 0x7C01, 0xFFE9, 0x0100, 0x0908, 0x1000}, +}; + +static const u32 cmt_addrs_out[][15] = { + {0x420, 0x424, 0x428, 0x42C, 0x430, 0x434, 0x450, 0x454, 0x458, 0x460, 0x464, 0x468, 0x4A0, 0x538, 0x53C}, + {0x620, 0x624, 0x628, 0x62C, 0x630, 0x634, 0x650, 0x654, 0x658, 0x660, 0x664, 0x668, 0x6A0, 0x738, 0x73C}, +}; + +static const u32 cmt_addrs_in[][13] = { + {0x020, 0x024, 0x028, 0x02C, 0x050, 0x054, 0x058, 0x060, 0x064, 0x068, 0x0A0, 0x138, 0x13C}, + {0x220, 0x224, 0x228, 0x22C, 0x250, 0x254, 0x258, 0x260, 0x264, 0x268, 0x2A0, 0x338, 0x33C}, +}; + +static const u32 cmt_freq[] = { + 25000, 25510, 26020, 26530, 26983, 27551, 28000, 28570, + 29046, 29522, 30000, 30476, 30952, 31546, 32000, 32539, + 33035, 33571, 33928, 34522, 35000, 35428, 36000, 36571, + 36904, 37500, 38093, 38571, 39047, 39453, 40000, 40476, + 40952, 41494, 41964, 42857, 43535, 44047, 44444, 45000, + 45535, 46029, 46428, 46823, 47617, 48214, 48571, 49107, + 49523, 50000, 50476, 50892, 51428, 52380, 53333, 53967, + 54285, 55238, 55555, 55952, 57142, 58095, 58571, 59047, + 59521, 60000, 60316, 60952, 61428, 61904, 62500, 63092, + 63491, 64282, 65078, 65476, 66071, 66664, 67142, 67854, + 68571, 69044, 69642, 70000, 71425, 72616, 73214, 73808, + 74285, 75000, 75714, 76187, 76785, 77142, 78570, 80000, + 80357, 80951, 81428, 82142, 82857, 83332, 83928, 84285, + 85713, 87142, 87500, 88094, 88571, 89285, 90000, 90475, + 91071, 91428, 92856, 94642, +}; + +static size_t freq_srch(u32 key, const u32 *array, size_t size) +{ + int l = 0; + int r = size - 1; + int m = 0; + + while (l <= r) { + m = (l + r) / 2; + if (array[m] < key) + l = m + 1; + else if (array[m] > key) + r = m - 1; + else + return m; + } + + if (r < 0 || l > size - 1) + return m; + else + return (abs(key - array[l]) < abs(key - array[r])) ? l : r; +} + +u32 mgb4_cmt_set_vout_freq(struct mgb4_vout_dev *voutdev, unsigned int freq) +{ + struct mgb4_regs *video = &voutdev->mgbdev->video; + const struct mgb4_vout_regs *regs = &voutdev->config->regs; + const u16 *reg_set; + const u32 *addr; + u32 config; + size_t i, index; + + index = freq_srch(freq, cmt_freq, ARRAY_SIZE(cmt_freq)); + addr = cmt_addrs_out[voutdev->config->id]; + reg_set = cmt_vals_out[index]; + + config = mgb4_read_reg(video, regs->config); + + mgb4_write_reg(video, regs->config, 0x1 | (config & ~0x3)); + + for (i = 0; i < ARRAY_SIZE(cmt_addrs_out[0]); i++) + mgb4_write_reg(&voutdev->mgbdev->cmt, addr[i], reg_set[i]); + + mgb4_mask_reg(video, regs->config, 0x100, 0x100); + mgb4_mask_reg(video, regs->config, 0x100, 0x0); + + mgb4_write_reg(video, regs->config, config & ~0x1); + + return cmt_freq[index]; +} + +void mgb4_cmt_set_vin_freq_range(struct mgb4_vin_dev *vindev, + unsigned int freq_range) +{ + struct mgb4_regs *video = &vindev->mgbdev->video; + const struct mgb4_vin_regs *regs = &vindev->config->regs; + const u16 *reg_set; + const u32 *addr; + u32 config; + size_t i; + + addr = cmt_addrs_in[vindev->config->id]; + reg_set = cmt_vals_in[freq_range]; + + config = mgb4_read_reg(video, regs->config); + + mgb4_write_reg(video, regs->config, 0x1 | (config & ~0x3)); + + for (i = 0; i < ARRAY_SIZE(cmt_addrs_in[0]); i++) + mgb4_write_reg(&vindev->mgbdev->cmt, addr[i], reg_set[i]); + + mgb4_mask_reg(video, regs->config, 0x1000, 0x1000); + mgb4_mask_reg(video, regs->config, 0x1000, 0x0); + + mgb4_write_reg(video, regs->config, config & ~0x1); +} diff --git a/drivers/media/pci/mgb4/mgb4_cmt.h b/drivers/media/pci/mgb4/mgb4_cmt.h new file mode 100644 index 0000000000..b15df56ca0 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_cmt.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + */ + +#ifndef __MGB4_CMT_H__ +#define __MGB4_CMT_H__ + +#include "mgb4_vout.h" +#include "mgb4_vin.h" + +u32 mgb4_cmt_set_vout_freq(struct mgb4_vout_dev *voutdev, unsigned int freq); +void mgb4_cmt_set_vin_freq_range(struct mgb4_vin_dev *vindev, + unsigned int freq_range); + +#endif diff --git a/drivers/media/pci/mgb4/mgb4_core.c b/drivers/media/pci/mgb4/mgb4_core.c new file mode 100644 index 0000000000..5bfb8a0620 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_core.c @@ -0,0 +1,696 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * This is the driver for the MGB4 video grabber card by Digiteq Automotive. + * + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + * + * This is the main driver module. The DMA, I2C and SPI sub-drivers are + * initialized here and the input/output v4l2 devices are created. + * + * The mgb4 card uses different expansion modules for different video sources + * (GMSL and FPDL3 for now) so in probe() we detect the module type based on + * what we see on the I2C bus and check if it matches the FPGA bitstream (there + * are different bitstreams for different expansion modules). When no expansion + * module is present, we still let the driver initialize to allow flashing of + * the FPGA firmware using the SPI FLASH device. No v4l2 video devices are + * created in this case. + */ + +#include <linux/types.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/platform_device.h> +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/clkdev.h> +#include <linux/i2c.h> +#include <linux/delay.h> +#include <linux/dma/amd_xdma.h> +#include <linux/platform_data/amd_xdma.h> +#include <linux/spi/xilinx_spi.h> +#include <linux/mtd/mtd.h> +#include <linux/hwmon.h> +#include <linux/debugfs.h> +#include "mgb4_dma.h" +#include "mgb4_i2c.h" +#include "mgb4_sysfs.h" +#include "mgb4_vout.h" +#include "mgb4_vin.h" +#include "mgb4_trigger.h" +#include "mgb4_core.h" + +#define MGB4_USER_IRQS 16 + +#define DIGITEQ_VID 0x1ed8 +#define T100_DID 0x0101 +#define T200_DID 0x0201 + +ATTRIBUTE_GROUPS(mgb4_pci); + +static int flashid; + +static struct xdma_chan_info h2c_chan_info = { + .dir = DMA_MEM_TO_DEV, +}; + +static struct xdma_chan_info c2h_chan_info = { + .dir = DMA_DEV_TO_MEM, +}; + +static struct xspi_platform_data spi_platform_data = { + .num_chipselect = 1, + .bits_per_word = 8 +}; + +static const struct i2c_board_info extender_info = { + I2C_BOARD_INFO("extender", 0x21) +}; + +#if IS_REACHABLE(CONFIG_HWMON) +static umode_t temp_is_visible(const void *data, enum hwmon_sensor_types type, + u32 attr, int channel) +{ + if (type == hwmon_temp && + (attr == hwmon_temp_input || attr == hwmon_temp_label)) + return 0444; + else + return 0; +} + +static int temp_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, + int channel, long *val) +{ + struct mgb4_dev *mgbdev = dev_get_drvdata(dev); + u32 val10, raw; + + if (type != hwmon_temp || attr != hwmon_temp_input) + return -EOPNOTSUPP; + + raw = mgb4_read_reg(&mgbdev->video, 0xD0); + /* register value -> Celsius degrees formula given by Xilinx */ + val10 = ((((raw >> 20) & 0xFFF) * 503975) - 1118822400) / 409600; + *val = val10 * 100; + + return 0; +} + +static int temp_read_string(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, const char **str) +{ + if (type != hwmon_temp || attr != hwmon_temp_label) + return -EOPNOTSUPP; + + *str = "FPGA Temperature"; + + return 0; +} + +static const struct hwmon_ops temp_ops = { + .is_visible = temp_is_visible, + .read = temp_read, + .read_string = temp_read_string +}; + +static const struct hwmon_channel_info *temp_channel_info[] = { + HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT | HWMON_T_LABEL), + NULL +}; + +static const struct hwmon_chip_info temp_chip_info = { + .ops = &temp_ops, + .info = temp_channel_info, +}; +#endif + +static int match_i2c_adap(struct device *dev, void *data) +{ + return i2c_verify_adapter(dev) ? 1 : 0; +} + +static struct i2c_adapter *get_i2c_adap(struct platform_device *pdev) +{ + struct device *dev; + + mutex_lock(&pdev->dev.mutex); + dev = device_find_child(&pdev->dev, NULL, match_i2c_adap); + mutex_unlock(&pdev->dev.mutex); + + return dev ? to_i2c_adapter(dev) : NULL; +} + +static int match_spi_adap(struct device *dev, void *data) +{ + return to_spi_device(dev) ? 1 : 0; +} + +static struct spi_master *get_spi_adap(struct platform_device *pdev) +{ + struct device *dev; + + mutex_lock(&pdev->dev.mutex); + dev = device_find_child(&pdev->dev, NULL, match_spi_adap); + mutex_unlock(&pdev->dev.mutex); + + return dev ? container_of(dev, struct spi_master, dev) : NULL; +} + +static int init_spi(struct mgb4_dev *mgbdev, u32 devid) +{ + struct resource spi_resources[] = { + { + .start = 0x400, + .end = 0x47f, + .flags = IORESOURCE_MEM, + .name = "io-memory", + }, + { + .start = 14, + .end = 14, + .flags = IORESOURCE_IRQ, + .name = "irq", + }, + }; + struct spi_board_info spi_info = { + .max_speed_hz = 10000000, + .modalias = "m25p80", + .chip_select = 0, + .mode = SPI_MODE_3, + }; + struct pci_dev *pdev = mgbdev->pdev; + struct device *dev = &pdev->dev; + struct spi_master *master; + struct spi_device *spi_dev; + u32 irq; + int rv, id; + resource_size_t mapbase = pci_resource_start(pdev, MGB4_MGB4_BAR_ID); + + request_module("platform:xilinx_spi"); + + irq = xdma_get_user_irq(mgbdev->xdev, 14); + xdma_enable_user_irq(mgbdev->xdev, irq); + + spi_resources[0].parent = &pdev->resource[MGB4_MGB4_BAR_ID]; + spi_resources[0].start += mapbase; + spi_resources[0].end += mapbase; + spi_resources[1].start = irq; + spi_resources[1].end = irq; + + id = pci_dev_id(pdev); + mgbdev->spi_pdev = platform_device_register_resndata(dev, "xilinx_spi", + id, spi_resources, + ARRAY_SIZE(spi_resources), + &spi_platform_data, + sizeof(spi_platform_data)); + if (IS_ERR(mgbdev->spi_pdev)) { + dev_err(dev, "failed to register SPI device\n"); + return PTR_ERR(mgbdev->spi_pdev); + } + + master = get_spi_adap(mgbdev->spi_pdev); + if (!master) { + dev_err(dev, "failed to get SPI adapter\n"); + rv = -EINVAL; + goto err_pdev; + } + + snprintf(mgbdev->fw_part_name, sizeof(mgbdev->fw_part_name), + "mgb4-fw.%d", flashid); + mgbdev->partitions[0].name = mgbdev->fw_part_name; + if (devid == T200_DID) { + mgbdev->partitions[0].size = 0x950000; + mgbdev->partitions[0].offset = 0x1000000; + } else { + mgbdev->partitions[0].size = 0x400000; + mgbdev->partitions[0].offset = 0x400000; + } + mgbdev->partitions[0].mask_flags = 0; + + snprintf(mgbdev->data_part_name, sizeof(mgbdev->data_part_name), + "mgb4-data.%d", flashid); + mgbdev->partitions[1].name = mgbdev->data_part_name; + mgbdev->partitions[1].size = 0x10000; + mgbdev->partitions[1].offset = 0xFF0000; + mgbdev->partitions[1].mask_flags = MTD_CAP_NORFLASH; + + snprintf(mgbdev->flash_name, sizeof(mgbdev->flash_name), + "mgb4-flash.%d", flashid); + mgbdev->flash_data.name = mgbdev->flash_name; + mgbdev->flash_data.parts = mgbdev->partitions; + mgbdev->flash_data.nr_parts = ARRAY_SIZE(mgbdev->partitions); + mgbdev->flash_data.type = "spi-nor"; + + spi_info.platform_data = &mgbdev->flash_data; + + spi_dev = spi_new_device(master, &spi_info); + put_device(&master->dev); + if (!spi_dev) { + dev_err(dev, "failed to create MTD device\n"); + rv = -EINVAL; + goto err_pdev; + } + + return 0; + +err_pdev: + platform_device_unregister(mgbdev->spi_pdev); + + return rv; +} + +static void free_spi(struct mgb4_dev *mgbdev) +{ + platform_device_unregister(mgbdev->spi_pdev); +} + +static int init_i2c(struct mgb4_dev *mgbdev) +{ + struct resource i2c_resources[] = { + { + .start = 0x200, + .end = 0x3ff, + .flags = IORESOURCE_MEM, + .name = "io-memory", + }, + { + .start = 15, + .end = 15, + .flags = IORESOURCE_IRQ, + .name = "irq", + }, + }; + struct pci_dev *pdev = mgbdev->pdev; + struct device *dev = &pdev->dev; + char clk_name[16]; + u32 irq; + int rv, id; + resource_size_t mapbase = pci_resource_start(pdev, MGB4_MGB4_BAR_ID); + + request_module("platform:xiic-i2c"); + + irq = xdma_get_user_irq(mgbdev->xdev, 15); + xdma_enable_user_irq(mgbdev->xdev, irq); + + i2c_resources[0].parent = &pdev->resource[MGB4_MGB4_BAR_ID]; + i2c_resources[0].start += mapbase; + i2c_resources[0].end += mapbase; + i2c_resources[1].start = irq; + i2c_resources[1].end = irq; + + id = pci_dev_id(pdev); + + /* create dummy clock required by the xiic-i2c adapter */ + snprintf(clk_name, sizeof(clk_name), "xiic-i2c.%d", id); + mgbdev->i2c_clk = clk_hw_register_fixed_rate(NULL, clk_name, NULL, + 0, 125000000); + if (IS_ERR(mgbdev->i2c_clk)) { + dev_err(dev, "failed to register I2C clock\n"); + return PTR_ERR(mgbdev->i2c_clk); + } + mgbdev->i2c_cl = clkdev_hw_create(mgbdev->i2c_clk, NULL, "xiic-i2c.%d", + id); + if (!mgbdev->i2c_cl) { + dev_err(dev, "failed to register I2C clockdev\n"); + rv = -ENOMEM; + goto err_clk; + } + + mgbdev->i2c_pdev = platform_device_register_resndata(dev, "xiic-i2c", + id, i2c_resources, + ARRAY_SIZE(i2c_resources), + NULL, 0); + if (IS_ERR(mgbdev->i2c_pdev)) { + dev_err(dev, "failed to register I2C device\n"); + rv = PTR_ERR(mgbdev->i2c_pdev); + goto err_clkdev; + } + + mgbdev->i2c_adap = get_i2c_adap(mgbdev->i2c_pdev); + if (!mgbdev->i2c_adap) { + dev_err(dev, "failed to get I2C adapter\n"); + rv = -EINVAL; + goto err_pdev; + } + + mutex_init(&mgbdev->i2c_lock); + + return 0; + +err_pdev: + platform_device_unregister(mgbdev->i2c_pdev); +err_clkdev: + clkdev_drop(mgbdev->i2c_cl); +err_clk: + clk_hw_unregister(mgbdev->i2c_clk); + + return rv; +} + +static void free_i2c(struct mgb4_dev *mgbdev) +{ + put_device(&mgbdev->i2c_adap->dev); + platform_device_unregister(mgbdev->i2c_pdev); + clkdev_drop(mgbdev->i2c_cl); + clk_hw_unregister(mgbdev->i2c_clk); +} + +static int get_serial_number(struct mgb4_dev *mgbdev) +{ + struct device *dev = &mgbdev->pdev->dev; + struct mtd_info *mtd; + size_t rs; + int rv; + + mgbdev->serial_number = 0; + + mtd = get_mtd_device_nm(mgbdev->data_part_name); + if (IS_ERR(mtd)) { + dev_warn(dev, "failed to get data MTD device\n"); + return -ENOENT; + } + rv = mtd_read(mtd, 0, sizeof(mgbdev->serial_number), &rs, + (u_char *)&mgbdev->serial_number); + put_mtd_device(mtd); + if (rv < 0 || rs != sizeof(mgbdev->serial_number)) { + dev_warn(dev, "error reading MTD device\n"); + return -EIO; + } + + return 0; +} + +static int get_module_version(struct mgb4_dev *mgbdev) +{ + struct device *dev = &mgbdev->pdev->dev; + struct mgb4_i2c_client extender; + s32 version; + u32 fw_version; + int rv; + + rv = mgb4_i2c_init(&extender, mgbdev->i2c_adap, &extender_info, 8); + if (rv < 0) { + dev_err(dev, "failed to create extender I2C device\n"); + return rv; + } + version = mgb4_i2c_read_byte(&extender, 0x00); + mgb4_i2c_free(&extender); + if (version < 0) { + dev_err(dev, "error reading module version\n"); + return -EIO; + } + + mgbdev->module_version = ~((u32)version) & 0xff; + if (!(MGB4_IS_FPDL3(mgbdev) || MGB4_IS_GMSL(mgbdev))) { + dev_err(dev, "unknown module type\n"); + return -EINVAL; + } + fw_version = mgb4_read_reg(&mgbdev->video, 0xC4); + if (fw_version >> 24 != mgbdev->module_version >> 4) { + dev_err(dev, "module/firmware type mismatch\n"); + return -EINVAL; + } + + dev_info(dev, "%s module detected\n", + MGB4_IS_FPDL3(mgbdev) ? "FPDL3" : "GMSL"); + + return 0; +} + +static int map_regs(struct pci_dev *pdev, struct resource *res, + struct mgb4_regs *regs) +{ + int rv; + resource_size_t mapbase = pci_resource_start(pdev, MGB4_MGB4_BAR_ID); + + res->start += mapbase; + res->end += mapbase; + + rv = mgb4_regs_map(res, regs); + if (rv < 0) { + dev_err(&pdev->dev, "failed to map %s registers\n", res->name); + return rv; + } + + return 0; +} + +static int init_xdma(struct mgb4_dev *mgbdev) +{ + struct xdma_platdata data; + struct resource res[2] = { 0 }; + struct dma_slave_map *map; + struct pci_dev *pdev = mgbdev->pdev; + struct device *dev = &pdev->dev; + int i; + + res[0].start = pci_resource_start(pdev, MGB4_XDMA_BAR_ID); + res[0].end = pci_resource_end(pdev, MGB4_XDMA_BAR_ID); + res[0].flags = IORESOURCE_MEM; + res[0].parent = &pdev->resource[MGB4_XDMA_BAR_ID]; + res[1].start = pci_irq_vector(pdev, 0); + res[1].end = res[1].start + MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES + + MGB4_USER_IRQS - 1; + res[1].flags = IORESOURCE_IRQ; + + data.max_dma_channels = MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES; + data.device_map = mgbdev->slave_map; + data.device_map_cnt = MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES; + + for (i = 0; i < MGB4_VIN_DEVICES; i++) { + sprintf(mgbdev->channel_names[i], "c2h%d", i); + map = &data.device_map[i]; + map->slave = mgbdev->channel_names[i]; + map->devname = dev_name(dev); + map->param = XDMA_FILTER_PARAM(&c2h_chan_info); + } + for (i = 0; i < MGB4_VOUT_DEVICES; i++) { + sprintf(mgbdev->channel_names[i + MGB4_VIN_DEVICES], "h2c%d", i); + map = &data.device_map[i + MGB4_VIN_DEVICES]; + map->slave = mgbdev->channel_names[i + MGB4_VIN_DEVICES]; + map->devname = dev_name(dev); + map->param = XDMA_FILTER_PARAM(&h2c_chan_info); + } + + mgbdev->xdev = platform_device_register_resndata(dev, "xdma", + PLATFORM_DEVID_AUTO, res, + 2, &data, sizeof(data)); + if (IS_ERR(mgbdev->xdev)) { + dev_err(dev, "failed to register XDMA device\n"); + return PTR_ERR(mgbdev->xdev); + } + + return 0; +} + +static void free_xdma(struct mgb4_dev *mgbdev) +{ + platform_device_unregister(mgbdev->xdev); +} + +static int mgb4_probe(struct pci_dev *pdev, const struct pci_device_id *id) +{ + int i, rv; + struct mgb4_dev *mgbdev; + struct resource video = { + .start = 0x0, + .end = 0x100, + .flags = IORESOURCE_MEM, + .name = "mgb4-video", + }; + struct resource cmt = { + .start = 0x1000, + .end = 0x1800, + .flags = IORESOURCE_MEM, + .name = "mgb4-cmt", + }; + int irqs = pci_msix_vec_count(pdev); + + mgbdev = kzalloc(sizeof(*mgbdev), GFP_KERNEL); + if (!mgbdev) + return -ENOMEM; + + mgbdev->pdev = pdev; + pci_set_drvdata(pdev, mgbdev); + + /* PCIe related stuff */ + rv = pci_enable_device(pdev); + if (rv) { + dev_err(&pdev->dev, "error enabling PCI device\n"); + goto err_mgbdev; + } + + rv = pcie_capability_set_word(pdev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_RELAX_EN); + if (rv) + dev_warn(&pdev->dev, "error enabling PCIe relaxed ordering\n"); + rv = pcie_capability_set_word(pdev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_EXT_TAG); + if (rv) + dev_warn(&pdev->dev, "error enabling PCIe extended tag field\n"); + rv = pcie_set_readrq(pdev, 512); + if (rv) + dev_warn(&pdev->dev, "error setting PCIe max. memory read size\n"); + pci_set_master(pdev); + + rv = pci_alloc_irq_vectors(pdev, irqs, irqs, PCI_IRQ_MSIX); + if (rv < 0) { + dev_err(&pdev->dev, "error allocating MSI-X IRQs\n"); + goto err_enable_pci; + } + + rv = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); + if (rv) { + dev_err(&pdev->dev, "error setting DMA mask\n"); + goto err_enable_pci; + } + + /* DMA + IRQ engine */ + rv = init_xdma(mgbdev); + if (rv) + goto err_alloc_irq; + rv = mgb4_dma_channel_init(mgbdev); + if (rv) + goto err_dma_chan; + + /* mgb4 video registers */ + rv = map_regs(pdev, &video, &mgbdev->video); + if (rv < 0) + goto err_dma_chan; + /* mgb4 cmt registers */ + rv = map_regs(pdev, &cmt, &mgbdev->cmt); + if (rv < 0) + goto err_video_regs; + + /* SPI FLASH */ + rv = init_spi(mgbdev, id->device); + if (rv < 0) + goto err_cmt_regs; + + /* I2C controller */ + rv = init_i2c(mgbdev); + if (rv < 0) + goto err_spi; + + /* PCI card related sysfs attributes */ + rv = device_add_groups(&pdev->dev, mgb4_pci_groups); + if (rv < 0) + goto err_i2c; + +#if IS_REACHABLE(CONFIG_HWMON) + /* HWmon (card temperature) */ + mgbdev->hwmon_dev = hwmon_device_register_with_info(&pdev->dev, "mgb4", + mgbdev, + &temp_chip_info, + NULL); +#endif + +#ifdef CONFIG_DEBUG_FS + mgbdev->debugfs = debugfs_create_dir(dev_name(&pdev->dev), NULL); +#endif + + /* Get card serial number. On systems without MTD flash support we may + * get an error thus ignore the return value. An invalid serial number + * should not break anything... + */ + if (get_serial_number(mgbdev) < 0) + dev_warn(&pdev->dev, "error reading card serial number\n"); + + /* Get module type. If no valid module is found, skip the video device + * creation part but do not exit with error to allow flashing the card. + */ + rv = get_module_version(mgbdev); + if (rv < 0) + goto exit; + + /* Video input v4l2 devices */ + for (i = 0; i < MGB4_VIN_DEVICES; i++) + mgbdev->vin[i] = mgb4_vin_create(mgbdev, i); + + /* Video output v4l2 devices */ + for (i = 0; i < MGB4_VOUT_DEVICES; i++) + mgbdev->vout[i] = mgb4_vout_create(mgbdev, i); + + /* Triggers */ + mgbdev->indio_dev = mgb4_trigger_create(mgbdev); + +exit: + flashid++; + + return 0; + +err_i2c: + free_i2c(mgbdev); +err_spi: + free_spi(mgbdev); +err_cmt_regs: + mgb4_regs_free(&mgbdev->cmt); +err_video_regs: + mgb4_regs_free(&mgbdev->video); +err_dma_chan: + mgb4_dma_channel_free(mgbdev); + free_xdma(mgbdev); +err_alloc_irq: + pci_disable_msix(pdev); +err_enable_pci: + pci_disable_device(pdev); +err_mgbdev: + kfree(mgbdev); + + return rv; +} + +static void mgb4_remove(struct pci_dev *pdev) +{ + struct mgb4_dev *mgbdev = pci_get_drvdata(pdev); + int i; + +#ifdef CONFIG_DEBUG_FS + debugfs_remove_recursive(mgbdev->debugfs); +#endif +#if IS_REACHABLE(CONFIG_HWMON) + hwmon_device_unregister(mgbdev->hwmon_dev); +#endif + + if (mgbdev->indio_dev) + mgb4_trigger_free(mgbdev->indio_dev); + + for (i = 0; i < MGB4_VOUT_DEVICES; i++) + if (mgbdev->vout[i]) + mgb4_vout_free(mgbdev->vout[i]); + for (i = 0; i < MGB4_VIN_DEVICES; i++) + if (mgbdev->vin[i]) + mgb4_vin_free(mgbdev->vin[i]); + + device_remove_groups(&mgbdev->pdev->dev, mgb4_pci_groups); + free_spi(mgbdev); + free_i2c(mgbdev); + mgb4_regs_free(&mgbdev->video); + mgb4_regs_free(&mgbdev->cmt); + + mgb4_dma_channel_free(mgbdev); + free_xdma(mgbdev); + + pci_disable_msix(mgbdev->pdev); + pci_disable_device(mgbdev->pdev); + + kfree(mgbdev); +} + +static const struct pci_device_id mgb4_pci_ids[] = { + { PCI_DEVICE(DIGITEQ_VID, T100_DID), }, + { PCI_DEVICE(DIGITEQ_VID, T200_DID), }, + { 0, } +}; +MODULE_DEVICE_TABLE(pci, mgb4_pci_ids); + +static struct pci_driver mgb4_pci_driver = { + .name = KBUILD_MODNAME, + .id_table = mgb4_pci_ids, + .probe = mgb4_probe, + .remove = mgb4_remove, +}; + +module_pci_driver(mgb4_pci_driver); + +MODULE_AUTHOR("Digiteq Automotive s.r.o."); +MODULE_DESCRIPTION("Digiteq Automotive MGB4 Driver"); +MODULE_LICENSE("GPL"); +MODULE_SOFTDEP("pre: platform:xiic-i2c platform:xilinx_spi spi-nor"); diff --git a/drivers/media/pci/mgb4/mgb4_core.h b/drivers/media/pci/mgb4/mgb4_core.h new file mode 100644 index 0000000000..2a946e46ae --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_core.h @@ -0,0 +1,74 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + */ + +#ifndef __MGB4_CORE_H__ +#define __MGB4_CORE_H__ + +#include <linux/spi/flash.h> +#include <linux/mtd/partitions.h> +#include <linux/mutex.h> +#include <linux/dmaengine.h> +#include "mgb4_regs.h" + +#define MGB4_VIN_DEVICES 2 +#define MGB4_VOUT_DEVICES 2 + +#define MGB4_MGB4_BAR_ID 0 +#define MGB4_XDMA_BAR_ID 1 + +#define MGB4_IS_GMSL(mgbdev) \ + ((mgbdev)->module_version >> 4 == 2) +#define MGB4_IS_FPDL3(mgbdev) \ + ((mgbdev)->module_version >> 4 == 1) + +struct mgb4_dma_channel { + struct dma_chan *chan; + struct completion req_compl; +}; + +struct mgb4_dev { + struct pci_dev *pdev; + struct platform_device *xdev; + struct mgb4_vin_dev *vin[MGB4_VIN_DEVICES]; + struct mgb4_vout_dev *vout[MGB4_VOUT_DEVICES]; + + struct mgb4_dma_channel c2h_chan[MGB4_VIN_DEVICES]; + struct mgb4_dma_channel h2c_chan[MGB4_VOUT_DEVICES]; + struct dma_slave_map slave_map[MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES]; + + struct mgb4_regs video; + struct mgb4_regs cmt; + + struct clk_hw *i2c_clk; + struct clk_lookup *i2c_cl; + struct platform_device *i2c_pdev; + struct i2c_adapter *i2c_adap; + struct mutex i2c_lock; /* I2C bus access lock */ + + struct platform_device *spi_pdev; + struct flash_platform_data flash_data; + struct mtd_partition partitions[2]; + char flash_name[16]; + char fw_part_name[16]; + char data_part_name[16]; + char channel_names[MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES][16]; + + struct iio_dev *indio_dev; +#if IS_REACHABLE(CONFIG_HWMON) + struct device *hwmon_dev; +#endif + + unsigned long io_reconfig; + + u8 module_version; + u32 serial_number; + +#ifdef CONFIG_DEBUG_FS + struct dentry *debugfs; +#endif +}; + +#endif diff --git a/drivers/media/pci/mgb4/mgb4_dma.c b/drivers/media/pci/mgb4/mgb4_dma.c new file mode 100644 index 0000000000..cae888e650 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_dma.c @@ -0,0 +1,123 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + * + * This module handles the DMA transfers. A standard dmaengine API as provided + * by the XDMA module is used. + */ + +#include <linux/pci.h> +#include <linux/dma-direction.h> +#include "mgb4_core.h" +#include "mgb4_dma.h" + +static void chan_irq(void *param) +{ + struct mgb4_dma_channel *chan = param; + + complete(&chan->req_compl); +} + +int mgb4_dma_transfer(struct mgb4_dev *mgbdev, u32 channel, bool write, + u64 paddr, struct sg_table *sgt) +{ + struct dma_slave_config cfg; + struct mgb4_dma_channel *chan; + struct dma_async_tx_descriptor *tx; + struct pci_dev *pdev = mgbdev->pdev; + int ret; + + memset(&cfg, 0, sizeof(cfg)); + + if (write) { + cfg.direction = DMA_MEM_TO_DEV; + cfg.dst_addr = paddr; + cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + chan = &mgbdev->h2c_chan[channel]; + } else { + cfg.direction = DMA_DEV_TO_MEM; + cfg.src_addr = paddr; + cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + chan = &mgbdev->c2h_chan[channel]; + } + + ret = dmaengine_slave_config(chan->chan, &cfg); + if (ret) { + dev_err(&pdev->dev, "failed to config dma: %d\n", ret); + return ret; + } + + tx = dmaengine_prep_slave_sg(chan->chan, sgt->sgl, sgt->nents, + cfg.direction, 0); + if (!tx) { + dev_err(&pdev->dev, "failed to prep slave sg\n"); + return -EIO; + } + + tx->callback = chan_irq; + tx->callback_param = chan; + + ret = dma_submit_error(dmaengine_submit(tx)); + if (ret) { + dev_err(&pdev->dev, "failed to submit sg\n"); + return -EIO; + } + + dma_async_issue_pending(chan->chan); + + if (!wait_for_completion_timeout(&chan->req_compl, + msecs_to_jiffies(10000))) { + dev_err(&pdev->dev, "dma timeout\n"); + dmaengine_terminate_sync(chan->chan); + return -EIO; + } + + return 0; +} + +int mgb4_dma_channel_init(struct mgb4_dev *mgbdev) +{ + int i, ret; + char name[16]; + struct pci_dev *pdev = mgbdev->pdev; + + for (i = 0; i < MGB4_VIN_DEVICES; i++) { + sprintf(name, "c2h%d", i); + mgbdev->c2h_chan[i].chan = dma_request_chan(&pdev->dev, name); + if (IS_ERR(mgbdev->c2h_chan[i].chan)) { + dev_err(&pdev->dev, "failed to initialize %s", name); + ret = PTR_ERR(mgbdev->c2h_chan[i].chan); + mgbdev->c2h_chan[i].chan = NULL; + return ret; + } + init_completion(&mgbdev->c2h_chan[i].req_compl); + } + for (i = 0; i < MGB4_VOUT_DEVICES; i++) { + sprintf(name, "h2c%d", i); + mgbdev->h2c_chan[i].chan = dma_request_chan(&pdev->dev, name); + if (IS_ERR(mgbdev->h2c_chan[i].chan)) { + dev_err(&pdev->dev, "failed to initialize %s", name); + ret = PTR_ERR(mgbdev->h2c_chan[i].chan); + mgbdev->h2c_chan[i].chan = NULL; + return ret; + } + init_completion(&mgbdev->h2c_chan[i].req_compl); + } + + return 0; +} + +void mgb4_dma_channel_free(struct mgb4_dev *mgbdev) +{ + int i; + + for (i = 0; i < MGB4_VIN_DEVICES; i++) { + if (mgbdev->c2h_chan[i].chan) + dma_release_channel(mgbdev->c2h_chan[i].chan); + } + for (i = 0; i < MGB4_VOUT_DEVICES; i++) { + if (mgbdev->h2c_chan[i].chan) + dma_release_channel(mgbdev->h2c_chan[i].chan); + } +} diff --git a/drivers/media/pci/mgb4/mgb4_dma.h b/drivers/media/pci/mgb4/mgb4_dma.h new file mode 100644 index 0000000000..4ebc2b1ce9 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_dma.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + */ + +#ifndef __MGB4_DMA_H__ +#define __MGB4_DMA_H__ + +#include "mgb4_core.h" + +int mgb4_dma_channel_init(struct mgb4_dev *mgbdev); +void mgb4_dma_channel_free(struct mgb4_dev *mgbdev); + +int mgb4_dma_transfer(struct mgb4_dev *mgbdev, u32 channel, bool write, + u64 paddr, struct sg_table *sgt); + +#endif diff --git a/drivers/media/pci/mgb4/mgb4_i2c.c b/drivers/media/pci/mgb4/mgb4_i2c.c new file mode 100644 index 0000000000..2697b67e29 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_i2c.c @@ -0,0 +1,140 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + * + * The i2c module unifies the I2C access to the serializes/deserializes. The I2C + * chips on the GMSL module use 16b addressing, the FPDL3 chips use standard + * 8b addressing. + */ + +#include "mgb4_i2c.h" + +static int read_r16(struct i2c_client *client, u16 reg, u8 *val, int len) +{ + int ret; + u8 buf[2]; + struct i2c_msg msg[2] = { + { + .addr = client->addr, + .flags = 0, + .len = 2, + .buf = buf, + }, { + .addr = client->addr, + .flags = I2C_M_RD, + .len = len, + .buf = val, + } + }; + + buf[0] = (reg >> 8) & 0xff; + buf[1] = (reg >> 0) & 0xff; + + ret = i2c_transfer(client->adapter, msg, 2); + if (ret < 0) + return ret; + else if (ret != 2) + return -EREMOTEIO; + else + return 0; +} + +static int write_r16(struct i2c_client *client, u16 reg, const u8 *val, int len) +{ + int ret; + u8 buf[4]; + struct i2c_msg msg[1] = { + { + .addr = client->addr, + .flags = 0, + .len = 2 + len, + .buf = buf, + } + }; + + if (2 + len > sizeof(buf)) + return -EINVAL; + + buf[0] = (reg >> 8) & 0xff; + buf[1] = (reg >> 0) & 0xff; + memcpy(&buf[2], val, len); + + ret = i2c_transfer(client->adapter, msg, 1); + if (ret < 0) + return ret; + else if (ret != 1) + return -EREMOTEIO; + else + return 0; +} + +int mgb4_i2c_init(struct mgb4_i2c_client *client, struct i2c_adapter *adap, + struct i2c_board_info const *info, int addr_size) +{ + client->client = i2c_new_client_device(adap, info); + if (IS_ERR(client->client)) + return PTR_ERR(client->client); + + client->addr_size = addr_size; + + return 0; +} + +void mgb4_i2c_free(struct mgb4_i2c_client *client) +{ + i2c_unregister_device(client->client); +} + +s32 mgb4_i2c_read_byte(struct mgb4_i2c_client *client, u16 reg) +{ + int ret; + u8 b; + + if (client->addr_size == 8) + return i2c_smbus_read_byte_data(client->client, reg); + + ret = read_r16(client->client, reg, &b, 1); + if (ret < 0) + return ret; + + return (s32)b; +} + +s32 mgb4_i2c_write_byte(struct mgb4_i2c_client *client, u16 reg, u8 val) +{ + if (client->addr_size == 8) + return i2c_smbus_write_byte_data(client->client, reg, val); + else + return write_r16(client->client, reg, &val, 1); +} + +s32 mgb4_i2c_mask_byte(struct mgb4_i2c_client *client, u16 reg, u8 mask, u8 val) +{ + s32 ret; + + if (mask != 0xFF) { + ret = mgb4_i2c_read_byte(client, reg); + if (ret < 0) + return ret; + val |= (u8)ret & ~mask; + } + + return mgb4_i2c_write_byte(client, reg, val); +} + +int mgb4_i2c_configure(struct mgb4_i2c_client *client, + const struct mgb4_i2c_kv *values, size_t count) +{ + size_t i; + s32 res; + + for (i = 0; i < count; i++) { + res = mgb4_i2c_mask_byte(client, values[i].reg, values[i].mask, + values[i].val); + if (res < 0) + return res; + } + + return 0; +} diff --git a/drivers/media/pci/mgb4/mgb4_i2c.h b/drivers/media/pci/mgb4/mgb4_i2c.h new file mode 100644 index 0000000000..fac6a16344 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_i2c.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + */ + +#ifndef __MGB4_I2C_H__ +#define __MGB4_I2C_H__ + +#include <linux/i2c.h> + +struct mgb4_i2c_client { + struct i2c_client *client; + int addr_size; +}; + +struct mgb4_i2c_kv { + u16 reg; + u8 mask; + u8 val; +}; + +int mgb4_i2c_init(struct mgb4_i2c_client *client, struct i2c_adapter *adap, + struct i2c_board_info const *info, int addr_size); +void mgb4_i2c_free(struct mgb4_i2c_client *client); + +s32 mgb4_i2c_read_byte(struct mgb4_i2c_client *client, u16 reg); +s32 mgb4_i2c_write_byte(struct mgb4_i2c_client *client, u16 reg, u8 val); +s32 mgb4_i2c_mask_byte(struct mgb4_i2c_client *client, u16 reg, u8 mask, + u8 val); + +int mgb4_i2c_configure(struct mgb4_i2c_client *client, + const struct mgb4_i2c_kv *values, size_t count); + +#endif diff --git a/drivers/media/pci/mgb4/mgb4_io.h b/drivers/media/pci/mgb4/mgb4_io.h new file mode 100644 index 0000000000..8698db1be4 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_io.h @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + */ + +#ifndef __MGB4_IO_H__ +#define __MGB4_IO_H__ + +#include <media/v4l2-dev.h> + +#define MGB4_DEFAULT_WIDTH 1280 +#define MGB4_DEFAULT_HEIGHT 640 +#define MGB4_DEFAULT_PERIOD (125000000 / 60) + +/* Register access error indication */ +#define MGB4_ERR_NO_REG 0xFFFFFFFE +/* Frame buffer addresses greater than 0xFFFFFFFA indicate HW errors */ +#define MGB4_ERR_QUEUE_TIMEOUT 0xFFFFFFFD +#define MGB4_ERR_QUEUE_EMPTY 0xFFFFFFFC +#define MGB4_ERR_QUEUE_FULL 0xFFFFFFFB + +struct mgb4_frame_buffer { + struct vb2_v4l2_buffer vb; + struct list_head list; +}; + +static inline struct mgb4_frame_buffer *to_frame_buffer(struct vb2_v4l2_buffer *vbuf) +{ + return container_of(vbuf, struct mgb4_frame_buffer, vb); +} + +#endif diff --git a/drivers/media/pci/mgb4/mgb4_regs.c b/drivers/media/pci/mgb4/mgb4_regs.c new file mode 100644 index 0000000000..53d4e4503a --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_regs.c @@ -0,0 +1,30 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + */ + +#include <linux/ioport.h> +#include "mgb4_regs.h" + +int mgb4_regs_map(struct resource *res, struct mgb4_regs *regs) +{ + regs->mapbase = res->start; + regs->mapsize = res->end - res->start; + + if (!request_mem_region(regs->mapbase, regs->mapsize, res->name)) + return -EINVAL; + regs->membase = ioremap(regs->mapbase, regs->mapsize); + if (!regs->membase) { + release_mem_region(regs->mapbase, regs->mapsize); + return -EINVAL; + } + + return 0; +} + +void mgb4_regs_free(struct mgb4_regs *regs) +{ + iounmap(regs->membase); + release_mem_region(regs->mapbase, regs->mapsize); +} diff --git a/drivers/media/pci/mgb4/mgb4_regs.h b/drivers/media/pci/mgb4/mgb4_regs.h new file mode 100644 index 0000000000..c451808907 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_regs.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + */ + +#ifndef __MGB4_REGS_H__ +#define __MGB4_REGS_H__ + +#include <linux/io.h> + +struct mgb4_regs { + resource_size_t mapbase; + resource_size_t mapsize; + void __iomem *membase; +}; + +#define mgb4_write_reg(regs, offset, val) \ + iowrite32(val, (regs)->membase + (offset)) +#define mgb4_read_reg(regs, offset) \ + ioread32((regs)->membase + (offset)) + +static inline void mgb4_mask_reg(struct mgb4_regs *regs, u32 reg, u32 mask, + u32 val) +{ + u32 ret = mgb4_read_reg(regs, reg); + + val |= ret & ~mask; + mgb4_write_reg(regs, reg, val); +} + +int mgb4_regs_map(struct resource *res, struct mgb4_regs *regs); +void mgb4_regs_free(struct mgb4_regs *regs); + +#endif diff --git a/drivers/media/pci/mgb4/mgb4_sysfs.h b/drivers/media/pci/mgb4/mgb4_sysfs.h new file mode 100644 index 0000000000..017d82c062 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_sysfs.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + */ + +#ifndef __MGB4_SYSFS_H__ +#define __MGB4_SYSFS_H__ + +#include <linux/sysfs.h> + +extern struct attribute *mgb4_pci_attrs[]; +extern struct attribute *mgb4_fpdl3_in_attrs[]; +extern struct attribute *mgb4_gmsl_in_attrs[]; +extern struct attribute *mgb4_fpdl3_out_attrs[]; +extern struct attribute *mgb4_gmsl_out_attrs[]; + +#endif diff --git a/drivers/media/pci/mgb4/mgb4_sysfs_in.c b/drivers/media/pci/mgb4/mgb4_sysfs_in.c new file mode 100644 index 0000000000..0ba66a2cf1 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_sysfs_in.c @@ -0,0 +1,772 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + * + * This module handles all the sysfs info/configuration that is related to the + * v4l2 input devices. + */ + +#include <linux/device.h> +#include "mgb4_core.h" +#include "mgb4_i2c.h" +#include "mgb4_vin.h" +#include "mgb4_cmt.h" +#include "mgb4_sysfs.h" + +/* Common for both FPDL3 and GMSL */ + +static ssize_t input_id_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + + return sprintf(buf, "%d\n", vindev->config->id); +} + +static ssize_t oldi_lane_width_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + struct mgb4_dev *mgbdev = vindev->mgbdev; + u16 i2c_reg; + u8 i2c_mask, i2c_single_val, i2c_dual_val; + u32 config; + int ret; + + i2c_reg = MGB4_IS_GMSL(mgbdev) ? 0x1CE : 0x49; + i2c_mask = MGB4_IS_GMSL(mgbdev) ? 0x0E : 0x03; + i2c_single_val = MGB4_IS_GMSL(mgbdev) ? 0x00 : 0x02; + i2c_dual_val = MGB4_IS_GMSL(mgbdev) ? 0x0E : 0x00; + + mutex_lock(&mgbdev->i2c_lock); + ret = mgb4_i2c_read_byte(&vindev->deser, i2c_reg); + mutex_unlock(&mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + config = mgb4_read_reg(&mgbdev->video, vindev->config->regs.config); + + if (((config & (1U << 9)) && ((ret & i2c_mask) != i2c_dual_val)) || + (!(config & (1U << 9)) && ((ret & i2c_mask) != i2c_single_val))) { + dev_err(dev, "I2C/FPGA register value mismatch\n"); + return -EINVAL; + } + + return sprintf(buf, "%s\n", config & (1U << 9) ? "1" : "0"); +} + +/* + * OLDI lane width change is expected to be called on live streams. Video device + * locking/queue check is not needed. + */ +static ssize_t oldi_lane_width_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + struct mgb4_dev *mgbdev = vindev->mgbdev; + u32 fpga_data; + u16 i2c_reg; + u8 i2c_mask, i2c_data; + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + switch (val) { + case 0: /* single */ + fpga_data = 0; + i2c_data = MGB4_IS_GMSL(mgbdev) ? 0x00 : 0x02; + break; + case 1: /* dual */ + fpga_data = 1U << 9; + i2c_data = MGB4_IS_GMSL(mgbdev) ? 0x0E : 0x00; + break; + default: + return -EINVAL; + } + + i2c_reg = MGB4_IS_GMSL(mgbdev) ? 0x1CE : 0x49; + i2c_mask = MGB4_IS_GMSL(mgbdev) ? 0x0E : 0x03; + + mutex_lock(&mgbdev->i2c_lock); + ret = mgb4_i2c_mask_byte(&vindev->deser, i2c_reg, i2c_mask, i2c_data); + mutex_unlock(&mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + mgb4_mask_reg(&mgbdev->video, vindev->config->regs.config, 1U << 9, + fpga_data); + if (MGB4_IS_GMSL(mgbdev)) { + /* reset input link */ + mutex_lock(&mgbdev->i2c_lock); + ret = mgb4_i2c_mask_byte(&vindev->deser, 0x10, 1U << 5, 1U << 5); + mutex_unlock(&mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + } + + return count; +} + +static ssize_t color_mapping_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.config); + + return sprintf(buf, "%s\n", config & (1U << 8) ? "0" : "1"); +} + +/* + * Color mapping change is expected to be called on live streams. Video device + * locking/queue check is not needed. + */ +static ssize_t color_mapping_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 fpga_data; + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + switch (val) { + case 0: /* OLDI/JEIDA */ + fpga_data = (1U << 8); + break; + case 1: /* SPWG/VESA */ + fpga_data = 0; + break; + default: + return -EINVAL; + } + + mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.config, + 1U << 8, fpga_data); + + return count; +} + +static ssize_t link_status_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 status = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.status); + + return sprintf(buf, "%s\n", status & (1U << 2) ? "1" : "0"); +} + +static ssize_t stream_status_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 status = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.status); + + return sprintf(buf, "%s\n", ((status & (1 << 14)) && + (status & (1 << 2)) && (status & (3 << 9))) ? "1" : "0"); +} + +static ssize_t video_width_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.resolution); + + return sprintf(buf, "%u\n", config >> 16); +} + +static ssize_t video_height_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.resolution); + + return sprintf(buf, "%u\n", config & 0xFFFF); +} + +static ssize_t hsync_status_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 status = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.status); + u32 res; + + if (!(status & (1U << 11))) + res = 0x02; // not available + else if (status & (1U << 12)) + res = 0x01; // active high + else + res = 0x00; // active low + + return sprintf(buf, "%u\n", res); +} + +static ssize_t vsync_status_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 status = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.status); + u32 res; + + if (!(status & (1U << 11))) + res = 0x02; // not available + else if (status & (1U << 13)) + res = 0x01; // active high + else + res = 0x00; // active low + + return sprintf(buf, "%u\n", res); +} + +static ssize_t hsync_gap_length_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 sync = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.sync); + + return sprintf(buf, "%u\n", sync >> 16); +} + +/* + * HSYNC gap length change is expected to be called on live streams. Video + * device locking/queue check is not needed. + */ +static ssize_t hsync_gap_length_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFFFF) + return -EINVAL; + + mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.sync, + 0xFFFF0000, val << 16); + + return count; +} + +static ssize_t vsync_gap_length_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 sync = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.sync); + + return sprintf(buf, "%u\n", sync & 0xFFFF); +} + +/* + * VSYNC gap length change is expected to be called on live streams. Video + * device locking/queue check is not needed. + */ +static ssize_t vsync_gap_length_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFFFF) + return -EINVAL; + + mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.sync, 0xFFFF, + val); + + return count; +} + +static ssize_t pclk_frequency_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 freq = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.pclk); + + return sprintf(buf, "%u\n", freq); +} + +static ssize_t hsync_width_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.signal); + + return sprintf(buf, "%u\n", (sig & 0x00FF0000) >> 16); +} + +static ssize_t vsync_width_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.signal2); + + return sprintf(buf, "%u\n", (sig & 0x00FF0000) >> 16); +} + +static ssize_t hback_porch_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.signal); + + return sprintf(buf, "%u\n", (sig & 0x0000FF00) >> 8); +} + +static ssize_t hfront_porch_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.signal); + + return sprintf(buf, "%u\n", (sig & 0x000000FF)); +} + +static ssize_t vback_porch_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.signal2); + + return sprintf(buf, "%u\n", (sig & 0x0000FF00) >> 8); +} + +static ssize_t vfront_porch_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.signal2); + + return sprintf(buf, "%u\n", (sig & 0x000000FF)); +} + +static ssize_t frequency_range_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + + return sprintf(buf, "%d\n", vindev->freq_range); +} + +static ssize_t frequency_range_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 1) + return -EINVAL; + + mutex_lock(vindev->vdev.lock); + if (vb2_is_busy(vindev->vdev.queue)) { + mutex_unlock(vindev->vdev.lock); + return -EBUSY; + } + + mgb4_cmt_set_vin_freq_range(vindev, val); + vindev->freq_range = val; + + mutex_unlock(vindev->vdev.lock); + + return count; +} + +/* FPDL3 only */ + +static ssize_t fpdl3_input_width_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + s32 ret; + + mutex_lock(&vindev->mgbdev->i2c_lock); + ret = mgb4_i2c_read_byte(&vindev->deser, 0x34); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + switch ((u8)ret & 0x18) { + case 0: + return sprintf(buf, "0\n"); + case 0x10: + return sprintf(buf, "1\n"); + case 0x08: + return sprintf(buf, "2\n"); + default: + return -EINVAL; + } +} + +/* + * FPD-Link width change is expected to be called on live streams. Video device + * locking/queue check is not needed. + */ +static ssize_t fpdl3_input_width_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u8 i2c_data; + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + switch (val) { + case 0: /* auto */ + i2c_data = 0x00; + break; + case 1: /* single */ + i2c_data = 0x10; + break; + case 2: /* dual */ + i2c_data = 0x08; + break; + default: + return -EINVAL; + } + + mutex_lock(&vindev->mgbdev->i2c_lock); + ret = mgb4_i2c_mask_byte(&vindev->deser, 0x34, 0x18, i2c_data); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + return count; +} + +/* GMSL only */ + +static ssize_t gmsl_mode_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + s32 r1, r300, r3; + + mutex_lock(&vindev->mgbdev->i2c_lock); + r1 = mgb4_i2c_read_byte(&vindev->deser, 0x01); + r300 = mgb4_i2c_read_byte(&vindev->deser, 0x300); + r3 = mgb4_i2c_read_byte(&vindev->deser, 0x03); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (r1 < 0 || r300 < 0 || r3 < 0) + return -EIO; + + if ((r1 & 0x03) == 0x03 && (r300 & 0x0C) == 0x0C && (r3 & 0xC0) == 0xC0) + return sprintf(buf, "0\n"); + else if ((r1 & 0x03) == 0x02 && (r300 & 0x0C) == 0x08 && (r3 & 0xC0) == 0x00) + return sprintf(buf, "1\n"); + else if ((r1 & 0x03) == 0x01 && (r300 & 0x0C) == 0x04 && (r3 & 0xC0) == 0x00) + return sprintf(buf, "2\n"); + else if ((r1 & 0x03) == 0x00 && (r300 & 0x0C) == 0x00 && (r3 & 0xC0) == 0x00) + return sprintf(buf, "3\n"); + else + return -EINVAL; +} + +/* + * GMSL mode change is expected to be called on live streams. Video device + * locking/queue check is not needed. + */ +static ssize_t gmsl_mode_store(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + static const struct mgb4_i2c_kv G12[] = { + {0x01, 0x03, 0x03}, {0x300, 0x0C, 0x0C}, {0x03, 0xC0, 0xC0}}; + static const struct mgb4_i2c_kv G6[] = { + {0x01, 0x03, 0x02}, {0x300, 0x0C, 0x08}, {0x03, 0xC0, 0x00}}; + static const struct mgb4_i2c_kv G3[] = { + {0x01, 0x03, 0x01}, {0x300, 0x0C, 0x04}, {0x03, 0xC0, 0x00}}; + static const struct mgb4_i2c_kv G1[] = { + {0x01, 0x03, 0x00}, {0x300, 0x0C, 0x00}, {0x03, 0xC0, 0x00}}; + static const struct mgb4_i2c_kv reset[] = { + {0x10, 1U << 5, 1U << 5}, {0x300, 1U << 6, 1U << 6}}; + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + const struct mgb4_i2c_kv *values; + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + switch (val) { + case 0: /* 12Gb/s */ + values = G12; + break; + case 1: /* 6Gb/s */ + values = G6; + break; + case 2: /* 3Gb/s */ + values = G3; + break; + case 3: /* 1.5Gb/s */ + values = G1; + break; + default: + return -EINVAL; + } + + mutex_lock(&vindev->mgbdev->i2c_lock); + ret = mgb4_i2c_configure(&vindev->deser, values, 3); + ret |= mgb4_i2c_configure(&vindev->deser, reset, 2); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + return count; +} + +static ssize_t gmsl_stream_id_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + s32 ret; + + mutex_lock(&vindev->mgbdev->i2c_lock); + ret = mgb4_i2c_read_byte(&vindev->deser, 0xA0); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + return sprintf(buf, "%d\n", ret & 0x03); +} + +static ssize_t gmsl_stream_id_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 3) + return -EINVAL; + + mutex_lock(vindev->vdev.lock); + if (vb2_is_busy(vindev->vdev.queue)) { + mutex_unlock(vindev->vdev.lock); + return -EBUSY; + } + + mutex_lock(&vindev->mgbdev->i2c_lock); + ret = mgb4_i2c_mask_byte(&vindev->deser, 0xA0, 0x03, (u8)val); + mutex_unlock(&vindev->mgbdev->i2c_lock); + + mutex_unlock(vindev->vdev.lock); + + return (ret < 0) ? -EIO : count; +} + +static ssize_t gmsl_fec_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + s32 r3e0, r308; + + mutex_lock(&vindev->mgbdev->i2c_lock); + r3e0 = mgb4_i2c_read_byte(&vindev->deser, 0x3E0); + r308 = mgb4_i2c_read_byte(&vindev->deser, 0x308); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (r3e0 < 0 || r308 < 0) + return -EIO; + + if ((r3e0 & 0x07) == 0x00 && (r308 & 0x01) == 0x00) + return sprintf(buf, "0\n"); + else if ((r3e0 & 0x07) == 0x07 && (r308 & 0x01) == 0x01) + return sprintf(buf, "1\n"); + else + return -EINVAL; +} + +/* + * GMSL FEC change is expected to be called on live streams. Video device + * locking/queue check is not needed. + */ +static ssize_t gmsl_fec_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + static const struct mgb4_i2c_kv enable[] = { + {0x3E0, 0x07, 0x07}, {0x308, 0x01, 0x01}}; + static const struct mgb4_i2c_kv disable[] = { + {0x3E0, 0x07, 0x00}, {0x308, 0x01, 0x00}}; + static const struct mgb4_i2c_kv reset[] = { + {0x10, 1U << 5, 1U << 5}, {0x300, 1U << 6, 1U << 6}}; + const struct mgb4_i2c_kv *values; + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + switch (val) { + case 0: /* disabled */ + values = disable; + break; + case 1: /* enabled */ + values = enable; + break; + default: + return -EINVAL; + } + + mutex_lock(&vindev->mgbdev->i2c_lock); + ret = mgb4_i2c_configure(&vindev->deser, values, 2); + ret |= mgb4_i2c_configure(&vindev->deser, reset, 2); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + return count; +} + +static DEVICE_ATTR_RO(input_id); +static DEVICE_ATTR_RW(oldi_lane_width); +static DEVICE_ATTR_RW(color_mapping); +static DEVICE_ATTR_RO(link_status); +static DEVICE_ATTR_RO(stream_status); +static DEVICE_ATTR_RO(video_width); +static DEVICE_ATTR_RO(video_height); +static DEVICE_ATTR_RO(hsync_status); +static DEVICE_ATTR_RO(vsync_status); +static DEVICE_ATTR_RW(hsync_gap_length); +static DEVICE_ATTR_RW(vsync_gap_length); +static DEVICE_ATTR_RO(pclk_frequency); +static DEVICE_ATTR_RO(hsync_width); +static DEVICE_ATTR_RO(vsync_width); +static DEVICE_ATTR_RO(hback_porch); +static DEVICE_ATTR_RO(hfront_porch); +static DEVICE_ATTR_RO(vback_porch); +static DEVICE_ATTR_RO(vfront_porch); +static DEVICE_ATTR_RW(frequency_range); + +static DEVICE_ATTR_RW(fpdl3_input_width); + +static DEVICE_ATTR_RW(gmsl_mode); +static DEVICE_ATTR_RW(gmsl_stream_id); +static DEVICE_ATTR_RW(gmsl_fec); + +struct attribute *mgb4_fpdl3_in_attrs[] = { + &dev_attr_input_id.attr, + &dev_attr_link_status.attr, + &dev_attr_stream_status.attr, + &dev_attr_video_width.attr, + &dev_attr_video_height.attr, + &dev_attr_hsync_status.attr, + &dev_attr_vsync_status.attr, + &dev_attr_oldi_lane_width.attr, + &dev_attr_color_mapping.attr, + &dev_attr_hsync_gap_length.attr, + &dev_attr_vsync_gap_length.attr, + &dev_attr_pclk_frequency.attr, + &dev_attr_hsync_width.attr, + &dev_attr_vsync_width.attr, + &dev_attr_hback_porch.attr, + &dev_attr_hfront_porch.attr, + &dev_attr_vback_porch.attr, + &dev_attr_vfront_porch.attr, + &dev_attr_frequency_range.attr, + &dev_attr_fpdl3_input_width.attr, + NULL +}; + +struct attribute *mgb4_gmsl_in_attrs[] = { + &dev_attr_input_id.attr, + &dev_attr_link_status.attr, + &dev_attr_stream_status.attr, + &dev_attr_video_width.attr, + &dev_attr_video_height.attr, + &dev_attr_hsync_status.attr, + &dev_attr_vsync_status.attr, + &dev_attr_oldi_lane_width.attr, + &dev_attr_color_mapping.attr, + &dev_attr_hsync_gap_length.attr, + &dev_attr_vsync_gap_length.attr, + &dev_attr_pclk_frequency.attr, + &dev_attr_hsync_width.attr, + &dev_attr_vsync_width.attr, + &dev_attr_hback_porch.attr, + &dev_attr_hfront_porch.attr, + &dev_attr_vback_porch.attr, + &dev_attr_vfront_porch.attr, + &dev_attr_frequency_range.attr, + &dev_attr_gmsl_mode.attr, + &dev_attr_gmsl_stream_id.attr, + &dev_attr_gmsl_fec.attr, + NULL +}; diff --git a/drivers/media/pci/mgb4/mgb4_sysfs_out.c b/drivers/media/pci/mgb4/mgb4_sysfs_out.c new file mode 100644 index 0000000000..9f6e81c577 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_sysfs_out.c @@ -0,0 +1,740 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + * + * This module handles all the sysfs info/configuration that is related to the + * v4l2 output devices. + */ + +#include <linux/device.h> +#include <linux/nospec.h> +#include "mgb4_core.h" +#include "mgb4_i2c.h" +#include "mgb4_vout.h" +#include "mgb4_vin.h" +#include "mgb4_cmt.h" +#include "mgb4_sysfs.h" + +static int loopin_cnt(struct mgb4_vin_dev *vindev) +{ + struct mgb4_vout_dev *voutdev; + u32 config; + int i, cnt = 0; + + for (i = 0; i < MGB4_VOUT_DEVICES; i++) { + voutdev = vindev->mgbdev->vout[i]; + if (!voutdev) + continue; + + config = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.config); + if ((config & 0xc) >> 2 == vindev->config->id) + cnt++; + } + + return cnt; +} + +static bool is_busy(struct video_device *dev) +{ + bool ret; + + mutex_lock(dev->lock); + ret = vb2_is_busy(dev->queue); + mutex_unlock(dev->lock); + + return ret; +} + +/* Common for both FPDL3 and GMSL */ + +static ssize_t output_id_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + + return sprintf(buf, "%d\n", voutdev->config->id); +} + +static ssize_t video_source_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.config); + + return sprintf(buf, "%u\n", (config & 0xc) >> 2); +} + +/* + * Video source change may affect the buffer queue of ANY video input/output on + * the card thus if any of the inputs/outputs is in use, we do not allow + * the change. + * + * As we do not want to lock all the video devices at the same time, a two-stage + * locking strategy is used. In addition to the video device locking there is + * a global (PCI device) variable "io_reconfig" atomically checked/set when + * the reconfiguration is running. All the video devices check the variable in + * their queue_setup() functions and do not allow to start the queue when + * the reconfiguration has started. + */ +static ssize_t video_source_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + struct mgb4_dev *mgbdev = voutdev->mgbdev; + struct mgb4_vin_dev *loopin_new = NULL, *loopin_old = NULL; + unsigned long val; + ssize_t ret; + u32 config; + int i; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 3) + return -EINVAL; + + if (test_and_set_bit(0, &mgbdev->io_reconfig)) + return -EBUSY; + + ret = -EBUSY; + for (i = 0; i < MGB4_VIN_DEVICES; i++) + if (mgbdev->vin[i] && is_busy(&mgbdev->vin[i]->vdev)) + goto end; + for (i = 0; i < MGB4_VOUT_DEVICES; i++) + if (mgbdev->vout[i] && is_busy(&mgbdev->vout[i]->vdev)) + goto end; + + config = mgb4_read_reg(&mgbdev->video, voutdev->config->regs.config); + + if (((config & 0xc) >> 2) < MGB4_VIN_DEVICES) + loopin_old = mgbdev->vin[(config & 0xc) >> 2]; + if (val < MGB4_VIN_DEVICES) { + val = array_index_nospec(val, MGB4_VIN_DEVICES); + loopin_new = mgbdev->vin[val]; + } + if (loopin_old && loopin_cnt(loopin_old) == 1) + mgb4_mask_reg(&mgbdev->video, loopin_old->config->regs.config, + 0x2, 0x0); + if (loopin_new) + mgb4_mask_reg(&mgbdev->video, loopin_new->config->regs.config, + 0x2, 0x2); + + if (val == voutdev->config->id + MGB4_VIN_DEVICES) + mgb4_write_reg(&mgbdev->video, voutdev->config->regs.config, + config & ~(1 << 1)); + else + mgb4_write_reg(&mgbdev->video, voutdev->config->regs.config, + config | (1U << 1)); + + mgb4_mask_reg(&mgbdev->video, voutdev->config->regs.config, 0xc, + val << 2); + + ret = count; +end: + clear_bit(0, &mgbdev->io_reconfig); + + return ret; +} + +static ssize_t display_width_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.resolution); + + return sprintf(buf, "%u\n", config >> 16); +} + +static ssize_t display_width_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFFFF) + return -EINVAL; + + mutex_lock(voutdev->vdev.lock); + if (vb2_is_busy(voutdev->vdev.queue)) { + mutex_unlock(voutdev->vdev.lock); + return -EBUSY; + } + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.resolution, + 0xFFFF0000, val << 16); + + mutex_unlock(voutdev->vdev.lock); + + return count; +} + +static ssize_t display_height_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.resolution); + + return sprintf(buf, "%u\n", config & 0xFFFF); +} + +static ssize_t display_height_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFFFF) + return -EINVAL; + + mutex_lock(voutdev->vdev.lock); + if (vb2_is_busy(voutdev->vdev.queue)) { + mutex_unlock(voutdev->vdev.lock); + return -EBUSY; + } + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.resolution, + 0xFFFF, val); + + mutex_unlock(voutdev->vdev.lock); + + return count; +} + +static ssize_t frame_rate_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 period = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.frame_period); + + return sprintf(buf, "%u\n", 125000000 / period); +} + +/* + * Frame rate change is expected to be called on live streams. Video device + * locking/queue check is not needed. + */ +static ssize_t frame_rate_store(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + mgb4_write_reg(&voutdev->mgbdev->video, + voutdev->config->regs.frame_period, 125000000 / val); + + return count; +} + +static ssize_t hsync_width_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.hsync); + + return sprintf(buf, "%u\n", (sig & 0x00FF0000) >> 16); +} + +/* + * HSYNC width change is expected to be called on live streams. Video device + * locking/queue check is not needed. + */ +static ssize_t hsync_width_store(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFF) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync, + 0x00FF0000, val << 16); + + return count; +} + +static ssize_t vsync_width_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.vsync); + + return sprintf(buf, "%u\n", (sig & 0x00FF0000) >> 16); +} + +/* + * VSYNC vidth change is expected to be called on live streams. Video device + * locking/queue check is not needed. + */ +static ssize_t vsync_width_store(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFF) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync, + 0x00FF0000, val << 16); + + return count; +} + +static ssize_t hback_porch_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.hsync); + + return sprintf(buf, "%u\n", (sig & 0x0000FF00) >> 8); +} + +/* + * hback porch change is expected to be called on live streams. Video device + * locking/queue check is not needed. + */ +static ssize_t hback_porch_store(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFF) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync, + 0x0000FF00, val << 8); + + return count; +} + +static ssize_t vback_porch_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.vsync); + + return sprintf(buf, "%u\n", (sig & 0x0000FF00) >> 8); +} + +/* + * vback porch change is expected to be called on live streams. Video device + * locking/queue check is not needed. + */ +static ssize_t vback_porch_store(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFF) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync, + 0x0000FF00, val << 8); + + return count; +} + +static ssize_t hfront_porch_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.hsync); + + return sprintf(buf, "%u\n", (sig & 0x000000FF)); +} + +/* + * hfront porch change is expected to be called on live streams. Video device + * locking/queue check is not needed. + */ +static ssize_t hfront_porch_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFF) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync, + 0x000000FF, val); + + return count; +} + +static ssize_t vfront_porch_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.vsync); + + return sprintf(buf, "%u\n", (sig & 0x000000FF)); +} + +/* + * vfront porch change is expected to be called on live streams. Video device + * locking/queue check is not needed. + */ +static ssize_t vfront_porch_store(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFF) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync, + 0x000000FF, val); + + return count; +} + +/* FPDL3 only */ + +static ssize_t hsync_polarity_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.hsync); + + return sprintf(buf, "%u\n", (config & (1U << 31)) >> 31); +} + +/* + * HSYNC polarity change is expected to be called on live streams. Video device + * locking/queue check is not needed. + */ +static ssize_t hsync_polarity_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 1) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync, + (1U << 31), val << 31); + + return count; +} + +static ssize_t vsync_polarity_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.vsync); + + return sprintf(buf, "%u\n", (config & (1U << 31)) >> 31); +} + +/* + * VSYNC polarity change is expected to be called on live streams. Video device + * locking/queue check is not needed. + */ +static ssize_t vsync_polarity_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 1) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync, + (1U << 31), val << 31); + + return count; +} + +static ssize_t de_polarity_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.vsync); + + return sprintf(buf, "%u\n", (config & (1U << 30)) >> 30); +} + +/* + * DE polarity change is expected to be called on live streams. Video device + * locking/queue check is not needed. + */ +static ssize_t de_polarity_store(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 1) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync, + (1U << 30), val << 30); + + return count; +} + +static ssize_t fpdl3_output_width_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + s32 ret; + + mutex_lock(&voutdev->mgbdev->i2c_lock); + ret = mgb4_i2c_read_byte(&voutdev->ser, 0x5B); + mutex_unlock(&voutdev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + switch ((u8)ret & 0x03) { + case 0: + return sprintf(buf, "0\n"); + case 1: + return sprintf(buf, "1\n"); + case 3: + return sprintf(buf, "2\n"); + default: + return -EINVAL; + } +} + +/* + * FPD-Link width change is expected to be called on live streams. Video device + * locking/queue check is not needed. + */ +static ssize_t fpdl3_output_width_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u8 i2c_data; + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + switch (val) { + case 0: /* auto */ + i2c_data = 0x00; + break; + case 1: /* single */ + i2c_data = 0x01; + break; + case 2: /* dual */ + i2c_data = 0x03; + break; + default: + return -EINVAL; + } + + mutex_lock(&voutdev->mgbdev->i2c_lock); + ret = mgb4_i2c_mask_byte(&voutdev->ser, 0x5B, 0x03, i2c_data); + mutex_unlock(&voutdev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + return count; +} + +static ssize_t pclk_frequency_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + + return sprintf(buf, "%u\n", voutdev->freq); +} + +static ssize_t pclk_frequency_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + unsigned int dp; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + mutex_lock(voutdev->vdev.lock); + if (vb2_is_busy(voutdev->vdev.queue)) { + mutex_unlock(voutdev->vdev.lock); + return -EBUSY; + } + + dp = (val > 50000) ? 1 : 0; + voutdev->freq = mgb4_cmt_set_vout_freq(voutdev, val >> dp) << dp; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.config, + 0x10, dp << 4); + mutex_lock(&voutdev->mgbdev->i2c_lock); + ret = mgb4_i2c_mask_byte(&voutdev->ser, 0x4F, 1 << 6, ((~dp) & 1) << 6); + mutex_unlock(&voutdev->mgbdev->i2c_lock); + + mutex_unlock(voutdev->vdev.lock); + + return (ret < 0) ? -EIO : count; +} + +static DEVICE_ATTR_RO(output_id); +static DEVICE_ATTR_RW(video_source); +static DEVICE_ATTR_RW(display_width); +static DEVICE_ATTR_RW(display_height); +static DEVICE_ATTR_RW(frame_rate); +static DEVICE_ATTR_RW(hsync_polarity); +static DEVICE_ATTR_RW(vsync_polarity); +static DEVICE_ATTR_RW(de_polarity); +static DEVICE_ATTR_RW(pclk_frequency); +static DEVICE_ATTR_RW(hsync_width); +static DEVICE_ATTR_RW(vsync_width); +static DEVICE_ATTR_RW(hback_porch); +static DEVICE_ATTR_RW(hfront_porch); +static DEVICE_ATTR_RW(vback_porch); +static DEVICE_ATTR_RW(vfront_porch); + +static DEVICE_ATTR_RW(fpdl3_output_width); + +struct attribute *mgb4_fpdl3_out_attrs[] = { + &dev_attr_output_id.attr, + &dev_attr_video_source.attr, + &dev_attr_display_width.attr, + &dev_attr_display_height.attr, + &dev_attr_frame_rate.attr, + &dev_attr_hsync_polarity.attr, + &dev_attr_vsync_polarity.attr, + &dev_attr_de_polarity.attr, + &dev_attr_pclk_frequency.attr, + &dev_attr_hsync_width.attr, + &dev_attr_vsync_width.attr, + &dev_attr_hback_porch.attr, + &dev_attr_hfront_porch.attr, + &dev_attr_vback_porch.attr, + &dev_attr_vfront_porch.attr, + &dev_attr_fpdl3_output_width.attr, + NULL +}; + +struct attribute *mgb4_gmsl_out_attrs[] = { + &dev_attr_output_id.attr, + &dev_attr_video_source.attr, + &dev_attr_display_width.attr, + &dev_attr_display_height.attr, + &dev_attr_frame_rate.attr, + NULL +}; diff --git a/drivers/media/pci/mgb4/mgb4_sysfs_pci.c b/drivers/media/pci/mgb4/mgb4_sysfs_pci.c new file mode 100644 index 0000000000..d26935ff95 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_sysfs_pci.c @@ -0,0 +1,71 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + * + * This module handles all the sysfs info/configuration that is related to the + * PCI card device. + */ + +#include <linux/device.h> +#include "mgb4_core.h" +#include "mgb4_sysfs.h" + +static ssize_t module_version_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mgb4_dev *mgbdev = dev_get_drvdata(dev); + + return sprintf(buf, "%u\n", mgbdev->module_version & 0x0F); +} + +static ssize_t module_type_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mgb4_dev *mgbdev = dev_get_drvdata(dev); + + return sprintf(buf, "%u\n", mgbdev->module_version >> 4); +} + +static ssize_t fw_version_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mgb4_dev *mgbdev = dev_get_drvdata(dev); + u32 config = mgb4_read_reg(&mgbdev->video, 0xC4); + + return sprintf(buf, "%u\n", config & 0xFFFF); +} + +static ssize_t fw_type_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mgb4_dev *mgbdev = dev_get_drvdata(dev); + u32 config = mgb4_read_reg(&mgbdev->video, 0xC4); + + return sprintf(buf, "%u\n", config >> 24); +} + +static ssize_t serial_number_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mgb4_dev *mgbdev = dev_get_drvdata(dev); + u32 sn = mgbdev->serial_number; + + return sprintf(buf, "%03d-%03d-%03d-%03d\n", sn >> 24, (sn >> 16) & 0xFF, + (sn >> 8) & 0xFF, sn & 0xFF); +} + +static DEVICE_ATTR_RO(module_version); +static DEVICE_ATTR_RO(module_type); +static DEVICE_ATTR_RO(fw_version); +static DEVICE_ATTR_RO(fw_type); +static DEVICE_ATTR_RO(serial_number); + +struct attribute *mgb4_pci_attrs[] = { + &dev_attr_module_type.attr, + &dev_attr_module_version.attr, + &dev_attr_fw_type.attr, + &dev_attr_fw_version.attr, + &dev_attr_serial_number.attr, + NULL +}; diff --git a/drivers/media/pci/mgb4/mgb4_trigger.c b/drivers/media/pci/mgb4/mgb4_trigger.c new file mode 100644 index 0000000000..923650d53d --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_trigger.c @@ -0,0 +1,208 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + * + * This module handles the IIO trigger device. The card has two signal inputs + * for event triggers that can be used to record events related to the video + * stream. A standard linux IIO device with triggered buffer capability is + * created and configured that can be used to fetch the events with the same + * clock source as the video frames. + */ + +#include <linux/iio/iio.h> +#include <linux/iio/buffer.h> +#include <linux/iio/trigger.h> +#include <linux/iio/trigger_consumer.h> +#include <linux/iio/triggered_buffer.h> +#include <linux/pci.h> +#include <linux/dma/amd_xdma.h> +#include "mgb4_core.h" +#include "mgb4_trigger.h" + +struct trigger_data { + struct mgb4_dev *mgbdev; + struct iio_trigger *trig; +}; + +static int trigger_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int *val, + int *val2, long mask) +{ + struct trigger_data *st = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_RAW: + if (iio_buffer_enabled(indio_dev)) + return -EBUSY; + *val = mgb4_read_reg(&st->mgbdev->video, 0xA0); + + return IIO_VAL_INT; + } + + return -EINVAL; +} + +static int trigger_set_state(struct iio_trigger *trig, bool state) +{ + struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); + struct trigger_data *st = iio_priv(indio_dev); + int irq = xdma_get_user_irq(st->mgbdev->xdev, 11); + + if (state) + xdma_enable_user_irq(st->mgbdev->xdev, irq); + else + xdma_disable_user_irq(st->mgbdev->xdev, irq); + + return 0; +} + +static const struct iio_trigger_ops trigger_ops = { + .set_trigger_state = &trigger_set_state, +}; + +static const struct iio_info trigger_info = { + .read_raw = trigger_read_raw, +}; + +#define TRIGGER_CHANNEL(_si) { \ + .type = IIO_ACTIVITY, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .scan_index = _si, \ + .scan_type = { \ + .sign = 'u', \ + .realbits = 32, \ + .storagebits = 32, \ + .shift = 0, \ + .endianness = IIO_CPU \ + }, \ +} + +static const struct iio_chan_spec trigger_channels[] = { + TRIGGER_CHANNEL(0), + IIO_CHAN_SOFT_TIMESTAMP(1), +}; + +static irqreturn_t trigger_handler(int irq, void *p) +{ + struct iio_poll_func *pf = p; + struct iio_dev *indio_dev = pf->indio_dev; + struct trigger_data *st = iio_priv(indio_dev); + struct { + u32 data; + s64 ts __aligned(8); + } scan; + + scan.data = mgb4_read_reg(&st->mgbdev->video, 0xA0); + mgb4_write_reg(&st->mgbdev->video, 0xA0, scan.data); + + iio_push_to_buffers_with_timestamp(indio_dev, &scan, pf->timestamp); + iio_trigger_notify_done(indio_dev->trig); + + mgb4_write_reg(&st->mgbdev->video, 0xB4, 1U << 11); + + return IRQ_HANDLED; +} + +static int probe_trigger(struct iio_dev *indio_dev, int irq) +{ + int ret; + struct trigger_data *st = iio_priv(indio_dev); + + st->trig = iio_trigger_alloc(&st->mgbdev->pdev->dev, "%s-dev%d", + indio_dev->name, iio_device_id(indio_dev)); + if (!st->trig) + return -ENOMEM; + + ret = request_irq(irq, &iio_trigger_generic_data_rdy_poll, 0, + "mgb4-trigger", st->trig); + if (ret) + goto error_free_trig; + + st->trig->ops = &trigger_ops; + iio_trigger_set_drvdata(st->trig, indio_dev); + ret = iio_trigger_register(st->trig); + if (ret) + goto error_free_irq; + + indio_dev->trig = iio_trigger_get(st->trig); + + return 0; + +error_free_irq: + free_irq(irq, st->trig); +error_free_trig: + iio_trigger_free(st->trig); + + return ret; +} + +static void remove_trigger(struct iio_dev *indio_dev, int irq) +{ + struct trigger_data *st = iio_priv(indio_dev); + + iio_trigger_unregister(st->trig); + free_irq(irq, st->trig); + iio_trigger_free(st->trig); +} + +struct iio_dev *mgb4_trigger_create(struct mgb4_dev *mgbdev) +{ + struct iio_dev *indio_dev; + struct trigger_data *data; + struct pci_dev *pdev = mgbdev->pdev; + struct device *dev = &pdev->dev; + int rv, irq; + + indio_dev = iio_device_alloc(dev, sizeof(*data)); + if (!indio_dev) + return NULL; + + indio_dev->info = &trigger_info; + indio_dev->name = "mgb4"; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->channels = trigger_channels; + indio_dev->num_channels = ARRAY_SIZE(trigger_channels); + + data = iio_priv(indio_dev); + data->mgbdev = mgbdev; + + irq = xdma_get_user_irq(mgbdev->xdev, 11); + rv = probe_trigger(indio_dev, irq); + if (rv < 0) { + dev_err(dev, "iio triggered setup failed\n"); + goto error_alloc; + } + rv = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time, + trigger_handler, NULL); + if (rv < 0) { + dev_err(dev, "iio triggered buffer setup failed\n"); + goto error_trigger; + } + rv = iio_device_register(indio_dev); + if (rv < 0) { + dev_err(dev, "iio device register failed\n"); + goto error_buffer; + } + + return indio_dev; + +error_buffer: + iio_triggered_buffer_cleanup(indio_dev); +error_trigger: + remove_trigger(indio_dev, irq); +error_alloc: + iio_device_free(indio_dev); + + return NULL; +} + +void mgb4_trigger_free(struct iio_dev *indio_dev) +{ + struct trigger_data *st = iio_priv(indio_dev); + + iio_device_unregister(indio_dev); + iio_triggered_buffer_cleanup(indio_dev); + remove_trigger(indio_dev, xdma_get_user_irq(st->mgbdev->xdev, 11)); + iio_device_free(indio_dev); +} diff --git a/drivers/media/pci/mgb4/mgb4_trigger.h b/drivers/media/pci/mgb4/mgb4_trigger.h new file mode 100644 index 0000000000..6c25bc4576 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_trigger.h @@ -0,0 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + */ + +struct iio_dev *mgb4_trigger_create(struct mgb4_dev *mgbdev); +void mgb4_trigger_free(struct iio_dev *indio_dev); diff --git a/drivers/media/pci/mgb4/mgb4_vin.c b/drivers/media/pci/mgb4/mgb4_vin.c new file mode 100644 index 0000000000..d72b07b87c --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_vin.c @@ -0,0 +1,939 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + * + * This is the v4l2 input device module. It initializes the signal deserializers + * and creates the v4l2 video devices. The input signal can change at any time + * which is handled by the "timings" callbacks and an IRQ based watcher, that + * emits the V4L2_EVENT_SOURCE_CHANGE event in case of a signal source change. + * + * When the device is in loopback mode (a direct, in HW, in->out frame passing + * mode) the card's frame queue must be running regardless of whether a v4l2 + * stream is running and the output parameters like frame buffers padding must + * be in sync with the input parameters. + */ + +#include <linux/pci.h> +#include <linux/workqueue.h> +#include <linux/align.h> +#include <linux/dma/amd_xdma.h> +#include <media/v4l2-ioctl.h> +#include <media/videobuf2-v4l2.h> +#include <media/videobuf2-dma-sg.h> +#include <media/v4l2-dv-timings.h> +#include <media/v4l2-event.h> +#include "mgb4_core.h" +#include "mgb4_dma.h" +#include "mgb4_sysfs.h" +#include "mgb4_io.h" +#include "mgb4_vout.h" +#include "mgb4_vin.h" + +ATTRIBUTE_GROUPS(mgb4_fpdl3_in); +ATTRIBUTE_GROUPS(mgb4_gmsl_in); + +static const struct mgb4_vin_config vin_cfg[] = { + {0, 0, 0, 6, {0x10, 0x00, 0x04, 0x08, 0x1C, 0x14, 0x18, 0x20, 0x24, 0x28}}, + {1, 1, 1, 7, {0x40, 0x30, 0x34, 0x38, 0x4C, 0x44, 0x48, 0x50, 0x54, 0x58}} +}; + +static const struct i2c_board_info fpdl3_deser_info[] = { + {I2C_BOARD_INFO("deserializer1", 0x38)}, + {I2C_BOARD_INFO("deserializer2", 0x36)}, +}; + +static const struct i2c_board_info gmsl_deser_info[] = { + {I2C_BOARD_INFO("deserializer1", 0x4C)}, + {I2C_BOARD_INFO("deserializer2", 0x2A)}, +}; + +static const struct mgb4_i2c_kv fpdl3_i2c[] = { + {0x06, 0xFF, 0x04}, {0x07, 0xFF, 0x01}, {0x45, 0xFF, 0xE8}, + {0x49, 0xFF, 0x00}, {0x34, 0xFF, 0x00}, {0x23, 0xFF, 0x00} +}; + +static const struct mgb4_i2c_kv gmsl_i2c[] = { + {0x01, 0x03, 0x03}, {0x300, 0x0C, 0x0C}, {0x03, 0xC0, 0xC0}, + {0x1CE, 0x0E, 0x0E}, {0x11, 0x05, 0x00}, {0x05, 0xC0, 0x40}, + {0x307, 0x0F, 0x00}, {0xA0, 0x03, 0x00}, {0x3E0, 0x07, 0x07}, + {0x308, 0x01, 0x01}, {0x10, 0x20, 0x20}, {0x300, 0x40, 0x40} +}; + +static const struct v4l2_dv_timings_cap video_timings_cap = { + .type = V4L2_DV_BT_656_1120, + .bt = { + .min_width = 320, + .max_width = 4096, + .min_height = 240, + .max_height = 2160, + .min_pixelclock = 1843200, /* 320 x 240 x 24Hz */ + .max_pixelclock = 530841600, /* 4096 x 2160 x 60Hz */ + .standards = V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT | + V4L2_DV_BT_STD_CVT | V4L2_DV_BT_STD_GTF, + .capabilities = V4L2_DV_BT_CAP_PROGRESSIVE | + V4L2_DV_BT_CAP_CUSTOM, + }, +}; + +/* + * Returns the video output connected with the given video input if the input + * is in loopback mode. + */ +static struct mgb4_vout_dev *loopback_dev(struct mgb4_vin_dev *vindev, int i) +{ + struct mgb4_vout_dev *voutdev; + u32 config; + + voutdev = vindev->mgbdev->vout[i]; + if (!voutdev) + return NULL; + + config = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.config); + if ((config & 0xc) >> 2 == vindev->config->id) + return voutdev; + + return NULL; +} + +/* + * Check, whether the loopback mode - a HW INPUT->OUTPUT transmission - is + * enabled on the given input. + */ +static int loopback_active(struct mgb4_vin_dev *vindev) +{ + int i; + + for (i = 0; i < MGB4_VOUT_DEVICES; i++) + if (loopback_dev(vindev, i)) + return 1; + + return 0; +} + +/* + * Set the output frame buffer padding of all outputs connected with the given + * input when the video input is set to loopback mode. The paddings must be + * the same for the loopback to work properly. + */ +static void set_loopback_padding(struct mgb4_vin_dev *vindev, u32 padding) +{ + struct mgb4_regs *video = &vindev->mgbdev->video; + struct mgb4_vout_dev *voutdev; + int i; + + for (i = 0; i < MGB4_VOUT_DEVICES; i++) { + voutdev = loopback_dev(vindev, i); + if (voutdev) + mgb4_write_reg(video, voutdev->config->regs.padding, + padding); + } +} + +static int get_timings(struct mgb4_vin_dev *vindev, + struct v4l2_dv_timings *timings) +{ + struct mgb4_regs *video = &vindev->mgbdev->video; + const struct mgb4_vin_regs *regs = &vindev->config->regs; + + u32 status = mgb4_read_reg(video, regs->status); + u32 pclk = mgb4_read_reg(video, regs->pclk); + u32 signal = mgb4_read_reg(video, regs->signal); + u32 signal2 = mgb4_read_reg(video, regs->signal2); + u32 resolution = mgb4_read_reg(video, regs->resolution); + + if (!(status & (1U << 2))) + return -ENOLCK; + if (!(status & (3 << 9))) + return -ENOLINK; + + memset(timings, 0, sizeof(*timings)); + timings->type = V4L2_DV_BT_656_1120; + timings->bt.width = resolution >> 16; + timings->bt.height = resolution & 0xFFFF; + if (status & (1U << 12)) + timings->bt.polarities |= V4L2_DV_HSYNC_POS_POL; + if (status & (1U << 13)) + timings->bt.polarities |= V4L2_DV_VSYNC_POS_POL; + timings->bt.pixelclock = pclk * 1000; + timings->bt.hsync = (signal & 0x00FF0000) >> 16; + timings->bt.vsync = (signal2 & 0x00FF0000) >> 16; + timings->bt.hbackporch = (signal & 0x0000FF00) >> 8; + timings->bt.hfrontporch = signal & 0x000000FF; + timings->bt.vbackporch = (signal2 & 0x0000FF00) >> 8; + timings->bt.vfrontporch = signal2 & 0x000000FF; + + return 0; +} + +static void return_all_buffers(struct mgb4_vin_dev *vindev, + enum vb2_buffer_state state) +{ + struct mgb4_frame_buffer *buf, *node; + unsigned long flags; + + spin_lock_irqsave(&vindev->qlock, flags); + list_for_each_entry_safe(buf, node, &vindev->buf_list, list) { + vb2_buffer_done(&buf->vb.vb2_buf, state); + list_del(&buf->list); + } + spin_unlock_irqrestore(&vindev->qlock, flags); +} + +static int queue_setup(struct vb2_queue *q, unsigned int *nbuffers, + unsigned int *nplanes, unsigned int sizes[], + struct device *alloc_devs[]) +{ + struct mgb4_vin_dev *vindev = vb2_get_drv_priv(q); + unsigned int size = (vindev->timings.bt.width + vindev->padding) + * vindev->timings.bt.height * 4; + + /* + * If I/O reconfiguration is in process, do not allow to start + * the queue. See video_source_store() in mgb4_sysfs_out.c for + * details. + */ + if (test_bit(0, &vindev->mgbdev->io_reconfig)) + return -EBUSY; + + if (!size) + return -EINVAL; + if (*nplanes) + return sizes[0] < size ? -EINVAL : 0; + *nplanes = 1; + sizes[0] = size; + + return 0; +} + +static int buffer_init(struct vb2_buffer *vb) +{ + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct mgb4_frame_buffer *buf = to_frame_buffer(vbuf); + + INIT_LIST_HEAD(&buf->list); + + return 0; +} + +static int buffer_prepare(struct vb2_buffer *vb) +{ + struct mgb4_vin_dev *vindev = vb2_get_drv_priv(vb->vb2_queue); + struct device *dev = &vindev->mgbdev->pdev->dev; + unsigned int size = (vindev->timings.bt.width + vindev->padding) + * vindev->timings.bt.height * 4; + + if (vb2_plane_size(vb, 0) < size) { + dev_err(dev, "buffer too small (%lu < %u)\n", + vb2_plane_size(vb, 0), size); + return -EINVAL; + } + + vb2_set_plane_payload(vb, 0, size); + + return 0; +} + +static void buffer_queue(struct vb2_buffer *vb) +{ + struct mgb4_vin_dev *vindev = vb2_get_drv_priv(vb->vb2_queue); + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct mgb4_frame_buffer *buf = to_frame_buffer(vbuf); + unsigned long flags; + + spin_lock_irqsave(&vindev->qlock, flags); + list_add_tail(&buf->list, &vindev->buf_list); + spin_unlock_irqrestore(&vindev->qlock, flags); +} + +static void stop_streaming(struct vb2_queue *vq) +{ + struct mgb4_vin_dev *vindev = vb2_get_drv_priv(vq); + const struct mgb4_vin_config *config = vindev->config; + int irq = xdma_get_user_irq(vindev->mgbdev->xdev, config->vin_irq); + + xdma_disable_user_irq(vindev->mgbdev->xdev, irq); + + /* + * In loopback mode, the HW frame queue must be left running for + * the IN->OUT transmission to work! + */ + if (!loopback_active(vindev)) + mgb4_mask_reg(&vindev->mgbdev->video, config->regs.config, 0x2, + 0x0); + + cancel_work_sync(&vindev->dma_work); + return_all_buffers(vindev, VB2_BUF_STATE_ERROR); +} + +static int start_streaming(struct vb2_queue *vq, unsigned int count) +{ + struct mgb4_vin_dev *vindev = vb2_get_drv_priv(vq); + const struct mgb4_vin_config *config = vindev->config; + int irq = xdma_get_user_irq(vindev->mgbdev->xdev, config->vin_irq); + + vindev->sequence = 0; + + /* + * In loopback mode, the HW frame queue is already running. + */ + if (!loopback_active(vindev)) + mgb4_mask_reg(&vindev->mgbdev->video, config->regs.config, 0x2, + 0x2); + + xdma_enable_user_irq(vindev->mgbdev->xdev, irq); + + return 0; +} + +static const struct vb2_ops queue_ops = { + .queue_setup = queue_setup, + .buf_init = buffer_init, + .buf_prepare = buffer_prepare, + .buf_queue = buffer_queue, + .start_streaming = start_streaming, + .stop_streaming = stop_streaming, + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish +}; + +static int fh_open(struct file *file) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + int rv; + + mutex_lock(&vindev->lock); + + rv = v4l2_fh_open(file); + if (rv) + goto out; + + if (!v4l2_fh_is_singular_file(file)) + goto out; + + get_timings(vindev, &vindev->timings); + set_loopback_padding(vindev, vindev->padding); + +out: + mutex_unlock(&vindev->lock); + return rv; +} + +static int fh_release(struct file *file) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + int rv; + + mutex_lock(&vindev->lock); + + if (v4l2_fh_is_singular_file(file)) + set_loopback_padding(vindev, 0); + + rv = _vb2_fop_release(file, NULL); + + mutex_unlock(&vindev->lock); + + return rv; +} + +static const struct v4l2_file_operations video_fops = { + .owner = THIS_MODULE, + .open = fh_open, + .release = fh_release, + .unlocked_ioctl = video_ioctl2, + .read = vb2_fop_read, + .mmap = vb2_fop_mmap, + .poll = vb2_fop_poll, +}; + +static int vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver)); + strscpy(cap->card, "MGB4 PCIe Card", sizeof(cap->card)); + + return 0; +} + +static int vidioc_enum_fmt(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + if (f->index != 0) + return -EINVAL; + + f->pixelformat = V4L2_PIX_FMT_ABGR32; + + return 0; +} + +static int vidioc_enum_frameintervals(struct file *file, void *priv, + struct v4l2_frmivalenum *ival) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + + if (ival->index != 0) + return -EINVAL; + if (ival->pixel_format != V4L2_PIX_FMT_ABGR32) + return -EINVAL; + if (ival->width != vindev->timings.bt.width || + ival->height != vindev->timings.bt.height) + return -EINVAL; + + ival->type = V4L2_FRMIVAL_TYPE_CONTINUOUS; + ival->stepwise.min.denominator = 60; + ival->stepwise.min.numerator = 1; + ival->stepwise.max.denominator = 1; + ival->stepwise.max.numerator = 1; + ival->stepwise.step = ival->stepwise.max; + + return 0; +} + +static int vidioc_g_fmt(struct file *file, void *priv, struct v4l2_format *f) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + + f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; + f->fmt.pix.width = vindev->timings.bt.width; + f->fmt.pix.height = vindev->timings.bt.height; + f->fmt.pix.field = V4L2_FIELD_NONE; + f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; + f->fmt.pix.bytesperline = (f->fmt.pix.width + vindev->padding) * 4; + f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; + + return 0; +} + +static int vidioc_try_fmt(struct file *file, void *priv, struct v4l2_format *f) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + + f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; + f->fmt.pix.width = vindev->timings.bt.width; + f->fmt.pix.height = vindev->timings.bt.height; + f->fmt.pix.field = V4L2_FIELD_NONE; + f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; + f->fmt.pix.bytesperline = max(f->fmt.pix.width * 4, + ALIGN_DOWN(f->fmt.pix.bytesperline, 4)); + f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; + + return 0; +} + +static int vidioc_s_fmt(struct file *file, void *priv, struct v4l2_format *f) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + struct mgb4_regs *video = &vindev->mgbdev->video; + + if (vb2_is_busy(&vindev->queue)) + return -EBUSY; + + vidioc_try_fmt(file, priv, f); + + vindev->padding = (f->fmt.pix.bytesperline - (f->fmt.pix.width * 4)) / 4; + mgb4_write_reg(video, vindev->config->regs.padding, vindev->padding); + set_loopback_padding(vindev, vindev->padding); + + return 0; +} + +static int vidioc_enum_input(struct file *file, void *priv, + struct v4l2_input *i) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + struct mgb4_regs *video = &vindev->mgbdev->video; + u32 status; + + if (i->index != 0) + return -EINVAL; + + strscpy(i->name, "MGB4", sizeof(i->name)); + i->type = V4L2_INPUT_TYPE_CAMERA; + i->capabilities = V4L2_IN_CAP_DV_TIMINGS; + i->status = 0; + + status = mgb4_read_reg(video, vindev->config->regs.status); + if (!(status & (1U << 2))) + i->status |= V4L2_IN_ST_NO_SYNC; + if (!(status & (3 << 9))) + i->status |= V4L2_IN_ST_NO_SIGNAL; + + return 0; +} + +static int vidioc_enum_framesizes(struct file *file, void *fh, + struct v4l2_frmsizeenum *fsize) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + + if (fsize->index != 0 || fsize->pixel_format != V4L2_PIX_FMT_ABGR32) + return -EINVAL; + + fsize->discrete.width = vindev->timings.bt.width; + fsize->discrete.height = vindev->timings.bt.height; + fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; + + return 0; +} + +static int vidioc_s_input(struct file *file, void *priv, unsigned int i) +{ + return (i == 0) ? 0 : -EINVAL; +} + +static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) +{ + *i = 0; + return 0; +} + +static int vidioc_parm(struct file *file, void *priv, + struct v4l2_streamparm *parm) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + struct mgb4_regs *video = &vindev->mgbdev->video; + const struct mgb4_vin_regs *regs = &vindev->config->regs; + struct v4l2_fract timeperframe = { + .numerator = mgb4_read_reg(video, regs->frame_period), + .denominator = 125000000, + }; + + if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + + parm->parm.capture.readbuffers = 2; + parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME; + parm->parm.capture.timeperframe = timeperframe; + + return 0; +} + +static int vidioc_s_dv_timings(struct file *file, void *fh, + struct v4l2_dv_timings *timings) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + + if (timings->bt.width < video_timings_cap.bt.min_width || + timings->bt.width > video_timings_cap.bt.max_width || + timings->bt.height < video_timings_cap.bt.min_height || + timings->bt.height > video_timings_cap.bt.max_height) + return -EINVAL; + if (timings->bt.width == vindev->timings.bt.width && + timings->bt.height == vindev->timings.bt.height) + return 0; + if (vb2_is_busy(&vindev->queue)) + return -EBUSY; + + vindev->timings = *timings; + + return 0; +} + +static int vidioc_g_dv_timings(struct file *file, void *fh, + struct v4l2_dv_timings *timings) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + *timings = vindev->timings; + + return 0; +} + +static int vidioc_query_dv_timings(struct file *file, void *fh, + struct v4l2_dv_timings *timings) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + + return get_timings(vindev, timings); +} + +static int vidioc_enum_dv_timings(struct file *file, void *fh, + struct v4l2_enum_dv_timings *timings) +{ + return v4l2_enum_dv_timings_cap(timings, &video_timings_cap, NULL, NULL); +} + +static int vidioc_dv_timings_cap(struct file *file, void *fh, + struct v4l2_dv_timings_cap *cap) +{ + *cap = video_timings_cap; + + return 0; +} + +static int vidioc_subscribe_event(struct v4l2_fh *fh, + const struct v4l2_event_subscription *sub) +{ + switch (sub->type) { + case V4L2_EVENT_SOURCE_CHANGE: + return v4l2_src_change_event_subscribe(fh, sub); + } + + return v4l2_ctrl_subscribe_event(fh, sub); +} + +static const struct v4l2_ioctl_ops video_ioctl_ops = { + .vidioc_querycap = vidioc_querycap, + .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt, + .vidioc_try_fmt_vid_cap = vidioc_try_fmt, + .vidioc_s_fmt_vid_cap = vidioc_s_fmt, + .vidioc_g_fmt_vid_cap = vidioc_g_fmt, + .vidioc_enum_framesizes = vidioc_enum_framesizes, + .vidioc_enum_frameintervals = vidioc_enum_frameintervals, + .vidioc_enum_input = vidioc_enum_input, + .vidioc_g_input = vidioc_g_input, + .vidioc_s_input = vidioc_s_input, + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_expbuf = vb2_ioctl_expbuf, + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, + .vidioc_g_parm = vidioc_parm, + .vidioc_s_parm = vidioc_parm, + .vidioc_dv_timings_cap = vidioc_dv_timings_cap, + .vidioc_enum_dv_timings = vidioc_enum_dv_timings, + .vidioc_g_dv_timings = vidioc_g_dv_timings, + .vidioc_s_dv_timings = vidioc_s_dv_timings, + .vidioc_query_dv_timings = vidioc_query_dv_timings, + .vidioc_subscribe_event = vidioc_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +static void dma_transfer(struct work_struct *work) +{ + struct mgb4_vin_dev *vindev = container_of(work, struct mgb4_vin_dev, + dma_work); + struct mgb4_regs *video = &vindev->mgbdev->video; + struct device *dev = &vindev->mgbdev->pdev->dev; + struct mgb4_frame_buffer *buf = NULL; + unsigned long flags; + u32 addr; + int rv; + + spin_lock_irqsave(&vindev->qlock, flags); + if (!list_empty(&vindev->buf_list)) { + buf = list_first_entry(&vindev->buf_list, + struct mgb4_frame_buffer, list); + list_del_init(vindev->buf_list.next); + } + spin_unlock_irqrestore(&vindev->qlock, flags); + + if (!buf) + return; + + addr = mgb4_read_reg(video, vindev->config->regs.address); + if (addr >= MGB4_ERR_QUEUE_FULL) { + dev_dbg(dev, "frame queue error (%d)\n", (int)addr); + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); + return; + } + + rv = mgb4_dma_transfer(vindev->mgbdev, vindev->config->dma_channel, + false, addr, + vb2_dma_sg_plane_desc(&buf->vb.vb2_buf, 0)); + if (rv < 0) { + dev_warn(dev, "DMA transfer error\n"); + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); + } else { + buf->vb.vb2_buf.timestamp = ktime_get_ns(); + buf->vb.sequence = vindev->sequence++; + buf->vb.field = V4L2_FIELD_NONE; + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE); + } +} + +static void signal_change(struct work_struct *work) +{ + struct mgb4_vin_dev *vindev = container_of(work, struct mgb4_vin_dev, + err_work); + struct mgb4_regs *video = &vindev->mgbdev->video; + struct v4l2_bt_timings *timings = &vindev->timings.bt; + struct device *dev = &vindev->mgbdev->pdev->dev; + + u32 resolution = mgb4_read_reg(video, vindev->config->regs.resolution); + u32 width = resolution >> 16; + u32 height = resolution & 0xFFFF; + + if (timings->width != width || timings->height != height) { + static const struct v4l2_event ev = { + .type = V4L2_EVENT_SOURCE_CHANGE, + .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION, + }; + + v4l2_event_queue(&vindev->vdev, &ev); + + if (vb2_is_streaming(&vindev->queue)) + vb2_queue_error(&vindev->queue); + } + + dev_dbg(dev, "stream changed to %ux%u\n", width, height); +} + +static irqreturn_t vin_handler(int irq, void *ctx) +{ + struct mgb4_vin_dev *vindev = (struct mgb4_vin_dev *)ctx; + struct mgb4_regs *video = &vindev->mgbdev->video; + + schedule_work(&vindev->dma_work); + + mgb4_write_reg(video, 0xB4, 1U << vindev->config->vin_irq); + + return IRQ_HANDLED; +} + +static irqreturn_t err_handler(int irq, void *ctx) +{ + struct mgb4_vin_dev *vindev = (struct mgb4_vin_dev *)ctx; + struct mgb4_regs *video = &vindev->mgbdev->video; + + schedule_work(&vindev->err_work); + + mgb4_write_reg(video, 0xB4, 1U << vindev->config->err_irq); + + return IRQ_HANDLED; +} + +static int deser_init(struct mgb4_vin_dev *vindev, int id) +{ + int rv, addr_size; + size_t values_count; + const struct mgb4_i2c_kv *values; + const struct i2c_board_info *info; + struct device *dev = &vindev->mgbdev->pdev->dev; + + if (MGB4_IS_GMSL(vindev->mgbdev)) { + info = &gmsl_deser_info[id]; + addr_size = 16; + values = gmsl_i2c; + values_count = ARRAY_SIZE(gmsl_i2c); + } else { + info = &fpdl3_deser_info[id]; + addr_size = 8; + values = fpdl3_i2c; + values_count = ARRAY_SIZE(fpdl3_i2c); + } + + rv = mgb4_i2c_init(&vindev->deser, vindev->mgbdev->i2c_adap, info, + addr_size); + if (rv < 0) { + dev_err(dev, "failed to create deserializer\n"); + return rv; + } + rv = mgb4_i2c_configure(&vindev->deser, values, values_count); + if (rv < 0) { + dev_err(dev, "failed to configure deserializer\n"); + goto err_i2c_dev; + } + + return 0; + +err_i2c_dev: + mgb4_i2c_free(&vindev->deser); + + return rv; +} + +static void fpga_init(struct mgb4_vin_dev *vindev) +{ + struct mgb4_regs *video = &vindev->mgbdev->video; + const struct mgb4_vin_regs *regs = &vindev->config->regs; + + mgb4_write_reg(video, regs->config, 0x00000001); + mgb4_write_reg(video, regs->sync, 0x03E80002); + mgb4_write_reg(video, regs->padding, 0x00000000); + mgb4_write_reg(video, regs->config, 1U << 9); +} + +#ifdef CONFIG_DEBUG_FS +static void debugfs_init(struct mgb4_vin_dev *vindev) +{ + struct mgb4_regs *video = &vindev->mgbdev->video; + + vindev->debugfs = debugfs_create_dir(vindev->vdev.name, + vindev->mgbdev->debugfs); + if (!vindev->debugfs) + return; + + vindev->regs[0].name = "CONFIG"; + vindev->regs[0].offset = vindev->config->regs.config; + vindev->regs[1].name = "STATUS"; + vindev->regs[1].offset = vindev->config->regs.status; + vindev->regs[2].name = "RESOLUTION"; + vindev->regs[2].offset = vindev->config->regs.resolution; + vindev->regs[3].name = "FRAME_PERIOD"; + vindev->regs[3].offset = vindev->config->regs.frame_period; + vindev->regs[4].name = "HS_VS_GENER_SETTINGS"; + vindev->regs[4].offset = vindev->config->regs.sync; + vindev->regs[5].name = "PCLK_FREQUENCY"; + vindev->regs[5].offset = vindev->config->regs.pclk; + vindev->regs[6].name = "VIDEO_PARAMS_1"; + vindev->regs[6].offset = vindev->config->regs.signal; + vindev->regs[7].name = "VIDEO_PARAMS_2"; + vindev->regs[7].offset = vindev->config->regs.signal2; + vindev->regs[8].name = "PADDING_PIXELS"; + vindev->regs[8].offset = vindev->config->regs.padding; + + vindev->regset.base = video->membase; + vindev->regset.regs = vindev->regs; + vindev->regset.nregs = ARRAY_SIZE(vindev->regs); + + debugfs_create_regset32("registers", 0444, vindev->debugfs, + &vindev->regset); +} +#endif + +struct mgb4_vin_dev *mgb4_vin_create(struct mgb4_dev *mgbdev, int id) +{ + int rv; + const struct attribute_group **groups; + struct mgb4_vin_dev *vindev; + struct pci_dev *pdev = mgbdev->pdev; + struct device *dev = &pdev->dev; + int vin_irq, err_irq; + + vindev = kzalloc(sizeof(*vindev), GFP_KERNEL); + if (!vindev) + return NULL; + + vindev->mgbdev = mgbdev; + vindev->config = &vin_cfg[id]; + + /* Frame queue*/ + INIT_LIST_HEAD(&vindev->buf_list); + spin_lock_init(&vindev->qlock); + + /* Work queues */ + INIT_WORK(&vindev->dma_work, dma_transfer); + INIT_WORK(&vindev->err_work, signal_change); + + /* IRQ callback */ + vin_irq = xdma_get_user_irq(mgbdev->xdev, vindev->config->vin_irq); + rv = request_irq(vin_irq, vin_handler, 0, "mgb4-vin", vindev); + if (rv) { + dev_err(dev, "failed to register vin irq handler\n"); + goto err_alloc; + } + /* Error IRQ callback */ + err_irq = xdma_get_user_irq(mgbdev->xdev, vindev->config->err_irq); + rv = request_irq(err_irq, err_handler, 0, "mgb4-err", vindev); + if (rv) { + dev_err(dev, "failed to register err irq handler\n"); + goto err_vin_irq; + } + + /* Set the FPGA registers default values */ + fpga_init(vindev); + + /* Set the deserializer default values */ + rv = deser_init(vindev, id); + if (rv) + goto err_err_irq; + + /* V4L2 stuff init */ + rv = v4l2_device_register(dev, &vindev->v4l2dev); + if (rv) { + dev_err(dev, "failed to register v4l2 device\n"); + goto err_err_irq; + } + + mutex_init(&vindev->lock); + + vindev->queue.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + vindev->queue.io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ; + vindev->queue.buf_struct_size = sizeof(struct mgb4_frame_buffer); + vindev->queue.ops = &queue_ops; + vindev->queue.mem_ops = &vb2_dma_sg_memops; + vindev->queue.gfp_flags = GFP_DMA32; + vindev->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + vindev->queue.min_buffers_needed = 2; + vindev->queue.drv_priv = vindev; + vindev->queue.lock = &vindev->lock; + vindev->queue.dev = dev; + rv = vb2_queue_init(&vindev->queue); + if (rv) { + dev_err(dev, "failed to initialize vb2 queue\n"); + goto err_v4l2_dev; + } + + snprintf(vindev->vdev.name, sizeof(vindev->vdev.name), "mgb4-in%d", + id + 1); + vindev->vdev.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE + | V4L2_CAP_STREAMING; + vindev->vdev.fops = &video_fops; + vindev->vdev.ioctl_ops = &video_ioctl_ops; + vindev->vdev.release = video_device_release_empty; + vindev->vdev.v4l2_dev = &vindev->v4l2dev; + vindev->vdev.lock = &vindev->lock; + vindev->vdev.queue = &vindev->queue; + video_set_drvdata(&vindev->vdev, vindev); + + /* Enable the video signal change watcher */ + xdma_enable_user_irq(vindev->mgbdev->xdev, err_irq); + + /* Register the video device */ + rv = video_register_device(&vindev->vdev, VFL_TYPE_VIDEO, -1); + if (rv) { + dev_err(dev, "failed to register video device\n"); + goto err_v4l2_dev; + } + + /* Module sysfs attributes */ + groups = MGB4_IS_GMSL(mgbdev) + ? mgb4_gmsl_in_groups : mgb4_fpdl3_in_groups; + rv = device_add_groups(&vindev->vdev.dev, groups); + if (rv) { + dev_err(dev, "failed to create sysfs attributes\n"); + goto err_video_dev; + } + +#ifdef CONFIG_DEBUG_FS + debugfs_init(vindev); +#endif + + return vindev; + +err_video_dev: + video_unregister_device(&vindev->vdev); +err_v4l2_dev: + v4l2_device_unregister(&vindev->v4l2dev); +err_err_irq: + free_irq(err_irq, vindev); +err_vin_irq: + free_irq(vin_irq, vindev); +err_alloc: + kfree(vindev); + + return NULL; +} + +void mgb4_vin_free(struct mgb4_vin_dev *vindev) +{ + const struct attribute_group **groups; + int vin_irq = xdma_get_user_irq(vindev->mgbdev->xdev, + vindev->config->vin_irq); + int err_irq = xdma_get_user_irq(vindev->mgbdev->xdev, + vindev->config->err_irq); + + xdma_disable_user_irq(vindev->mgbdev->xdev, err_irq); + + free_irq(vin_irq, vindev); + free_irq(err_irq, vindev); + +#ifdef CONFIG_DEBUG_FS + debugfs_remove_recursive(vindev->debugfs); +#endif + + groups = MGB4_IS_GMSL(vindev->mgbdev) + ? mgb4_gmsl_in_groups : mgb4_fpdl3_in_groups; + device_remove_groups(&vindev->vdev.dev, groups); + + mgb4_i2c_free(&vindev->deser); + video_unregister_device(&vindev->vdev); + v4l2_device_unregister(&vindev->v4l2dev); + + kfree(vindev); +} diff --git a/drivers/media/pci/mgb4/mgb4_vin.h b/drivers/media/pci/mgb4/mgb4_vin.h new file mode 100644 index 0000000000..0249b400ad --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_vin.h @@ -0,0 +1,69 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + */ + +#ifndef __MGB4_VIN_H__ +#define __MGB4_VIN_H__ + +#include <media/v4l2-device.h> +#include <media/v4l2-dev.h> +#include <media/v4l2-ctrls.h> +#include <media/videobuf2-core.h> +#include <linux/debugfs.h> +#include "mgb4_i2c.h" + +struct mgb4_vin_regs { + u32 address; + u32 config; + u32 status; + u32 resolution; + u32 frame_period; + u32 sync; + u32 pclk; + u32 signal; + u32 signal2; + u32 padding; +}; + +struct mgb4_vin_config { + int id; + int dma_channel; + int vin_irq; + int err_irq; + struct mgb4_vin_regs regs; +}; + +struct mgb4_vin_dev { + struct mgb4_dev *mgbdev; + struct v4l2_device v4l2dev; + struct video_device vdev; + struct vb2_queue queue; + struct mutex lock; /* vdev lock */ + + spinlock_t qlock; /* video buffer queue lock */ + struct list_head buf_list; + struct work_struct dma_work, err_work; + + unsigned int sequence; + + struct v4l2_dv_timings timings; + u32 freq_range; + u32 padding; + + struct mgb4_i2c_client deser; + + const struct mgb4_vin_config *config; + +#ifdef CONFIG_DEBUG_FS + struct dentry *debugfs; + struct debugfs_regset32 regset; + struct debugfs_reg32 regs[9]; +#endif +}; + +struct mgb4_vin_dev *mgb4_vin_create(struct mgb4_dev *mgbdev, int id); +void mgb4_vin_free(struct mgb4_vin_dev *vindev); + +#endif diff --git a/drivers/media/pci/mgb4/mgb4_vout.c b/drivers/media/pci/mgb4/mgb4_vout.c new file mode 100644 index 0000000000..857fc7bbd2 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_vout.c @@ -0,0 +1,602 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + * + * This is the v4l2 output device module. It initializes the signal serializers + * and creates the v4l2 video devices. + * + * When the device is in loopback mode (a direct, in HW, in->out frame passing + * mode) we disable the v4l2 output by returning EBUSY in the open() syscall. + */ + +#include <linux/pci.h> +#include <linux/align.h> +#include <linux/dma/amd_xdma.h> +#include <media/v4l2-ioctl.h> +#include <media/videobuf2-v4l2.h> +#include <media/videobuf2-dma-sg.h> +#include "mgb4_core.h" +#include "mgb4_dma.h" +#include "mgb4_sysfs.h" +#include "mgb4_io.h" +#include "mgb4_cmt.h" +#include "mgb4_vout.h" + +ATTRIBUTE_GROUPS(mgb4_fpdl3_out); +ATTRIBUTE_GROUPS(mgb4_gmsl_out); + +static const struct mgb4_vout_config vout_cfg[] = { + {0, 0, 8, {0x78, 0x60, 0x64, 0x68, 0x74, 0x6C, 0x70, 0x7c}}, + {1, 1, 9, {0x98, 0x80, 0x84, 0x88, 0x94, 0x8c, 0x90, 0x9c}} +}; + +static const struct i2c_board_info fpdl3_ser_info[] = { + {I2C_BOARD_INFO("serializer1", 0x14)}, + {I2C_BOARD_INFO("serializer2", 0x16)}, +}; + +static const struct mgb4_i2c_kv fpdl3_i2c[] = { + {0x05, 0xFF, 0x04}, {0x06, 0xFF, 0x01}, {0xC2, 0xFF, 0x80} +}; + +static void return_all_buffers(struct mgb4_vout_dev *voutdev, + enum vb2_buffer_state state) +{ + struct mgb4_frame_buffer *buf, *node; + unsigned long flags; + + spin_lock_irqsave(&voutdev->qlock, flags); + list_for_each_entry_safe(buf, node, &voutdev->buf_list, list) { + vb2_buffer_done(&buf->vb.vb2_buf, state); + list_del(&buf->list); + } + spin_unlock_irqrestore(&voutdev->qlock, flags); +} + +static int queue_setup(struct vb2_queue *q, unsigned int *nbuffers, + unsigned int *nplanes, unsigned int sizes[], + struct device *alloc_devs[]) +{ + struct mgb4_vout_dev *voutdev = vb2_get_drv_priv(q); + unsigned int size; + + /* + * If I/O reconfiguration is in process, do not allow to start + * the queue. See video_source_store() in mgb4_sysfs_out.c for + * details. + */ + if (test_bit(0, &voutdev->mgbdev->io_reconfig)) + return -EBUSY; + + size = (voutdev->width + voutdev->padding) * voutdev->height * 4; + + if (*nplanes) + return sizes[0] < size ? -EINVAL : 0; + *nplanes = 1; + sizes[0] = size; + + return 0; +} + +static int buffer_init(struct vb2_buffer *vb) +{ + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct mgb4_frame_buffer *buf = to_frame_buffer(vbuf); + + INIT_LIST_HEAD(&buf->list); + + return 0; +} + +static int buffer_prepare(struct vb2_buffer *vb) +{ + struct mgb4_vout_dev *voutdev = vb2_get_drv_priv(vb->vb2_queue); + struct device *dev = &voutdev->mgbdev->pdev->dev; + unsigned int size; + + size = (voutdev->width + voutdev->padding) * voutdev->height * 4; + + if (vb2_plane_size(vb, 0) < size) { + dev_err(dev, "buffer too small (%lu < %u)\n", + vb2_plane_size(vb, 0), size); + return -EINVAL; + } + + vb2_set_plane_payload(vb, 0, size); + + return 0; +} + +static void buffer_queue(struct vb2_buffer *vb) +{ + struct mgb4_vout_dev *vindev = vb2_get_drv_priv(vb->vb2_queue); + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct mgb4_frame_buffer *buf = to_frame_buffer(vbuf); + unsigned long flags; + + spin_lock_irqsave(&vindev->qlock, flags); + list_add_tail(&buf->list, &vindev->buf_list); + spin_unlock_irqrestore(&vindev->qlock, flags); +} + +static void stop_streaming(struct vb2_queue *vq) +{ + struct mgb4_vout_dev *voutdev = vb2_get_drv_priv(vq); + struct mgb4_dev *mgbdev = voutdev->mgbdev; + int irq = xdma_get_user_irq(mgbdev->xdev, voutdev->config->irq); + + xdma_disable_user_irq(mgbdev->xdev, irq); + cancel_work_sync(&voutdev->dma_work); + mgb4_mask_reg(&mgbdev->video, voutdev->config->regs.config, 0x2, 0x0); + return_all_buffers(voutdev, VB2_BUF_STATE_ERROR); +} + +static int start_streaming(struct vb2_queue *vq, unsigned int count) +{ + struct mgb4_vout_dev *voutdev = vb2_get_drv_priv(vq); + struct mgb4_dev *mgbdev = voutdev->mgbdev; + struct device *dev = &mgbdev->pdev->dev; + struct mgb4_frame_buffer *buf; + struct mgb4_regs *video = &mgbdev->video; + const struct mgb4_vout_config *config = voutdev->config; + int irq = xdma_get_user_irq(mgbdev->xdev, config->irq); + int rv; + u32 addr; + + mgb4_mask_reg(video, config->regs.config, 0x2, 0x2); + + addr = mgb4_read_reg(video, config->regs.address); + if (addr >= MGB4_ERR_QUEUE_FULL) { + dev_dbg(dev, "frame queue error (%d)\n", (int)addr); + return_all_buffers(voutdev, VB2_BUF_STATE_QUEUED); + return -EBUSY; + } + + buf = list_first_entry(&voutdev->buf_list, struct mgb4_frame_buffer, + list); + list_del_init(voutdev->buf_list.next); + + rv = mgb4_dma_transfer(mgbdev, config->dma_channel, true, addr, + vb2_dma_sg_plane_desc(&buf->vb.vb2_buf, 0)); + if (rv < 0) { + dev_warn(dev, "DMA transfer error\n"); + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); + } else { + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE); + } + + xdma_enable_user_irq(mgbdev->xdev, irq); + + return 0; +} + +static const struct vb2_ops queue_ops = { + .queue_setup = queue_setup, + .buf_init = buffer_init, + .buf_prepare = buffer_prepare, + .buf_queue = buffer_queue, + .start_streaming = start_streaming, + .stop_streaming = stop_streaming, + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish +}; + +static int vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver)); + strscpy(cap->card, "MGB4 PCIe Card", sizeof(cap->card)); + + return 0; +} + +static int vidioc_enum_fmt(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + if (f->index != 0) + return -EINVAL; + + f->pixelformat = V4L2_PIX_FMT_ABGR32; + + return 0; +} + +static int vidioc_g_fmt(struct file *file, void *priv, struct v4l2_format *f) +{ + struct mgb4_vout_dev *voutdev = video_drvdata(file); + + f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; + f->fmt.pix.width = voutdev->width; + f->fmt.pix.height = voutdev->height; + f->fmt.pix.field = V4L2_FIELD_NONE; + f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; + f->fmt.pix.bytesperline = (f->fmt.pix.width + voutdev->padding) * 4; + f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; + + return 0; +} + +static int vidioc_try_fmt(struct file *file, void *priv, struct v4l2_format *f) +{ + struct mgb4_vout_dev *voutdev = video_drvdata(file); + + f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; + f->fmt.pix.width = voutdev->width; + f->fmt.pix.height = voutdev->height; + f->fmt.pix.field = V4L2_FIELD_NONE; + f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; + f->fmt.pix.bytesperline = max(f->fmt.pix.width * 4, + ALIGN_DOWN(f->fmt.pix.bytesperline, 4)); + f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; + + return 0; +} + +static int vidioc_s_fmt(struct file *file, void *priv, struct v4l2_format *f) +{ + struct mgb4_vout_dev *voutdev = video_drvdata(file); + struct mgb4_regs *video = &voutdev->mgbdev->video; + + if (vb2_is_busy(&voutdev->queue)) + return -EBUSY; + + vidioc_try_fmt(file, priv, f); + + voutdev->padding = (f->fmt.pix.bytesperline - (f->fmt.pix.width * 4)) / 4; + mgb4_write_reg(video, voutdev->config->regs.padding, voutdev->padding); + + return 0; +} + +static int vidioc_g_output(struct file *file, void *priv, unsigned int *i) +{ + *i = 0; + return 0; +} + +static int vidioc_s_output(struct file *file, void *priv, unsigned int i) +{ + return i ? -EINVAL : 0; +} + +static int vidioc_enum_output(struct file *file, void *priv, + struct v4l2_output *out) +{ + if (out->index != 0) + return -EINVAL; + + out->type = V4L2_OUTPUT_TYPE_ANALOG; + strscpy(out->name, "MGB4", sizeof(out->name)); + + return 0; +} + +static const struct v4l2_ioctl_ops video_ioctl_ops = { + .vidioc_querycap = vidioc_querycap, + .vidioc_enum_fmt_vid_out = vidioc_enum_fmt, + .vidioc_try_fmt_vid_out = vidioc_try_fmt, + .vidioc_s_fmt_vid_out = vidioc_s_fmt, + .vidioc_g_fmt_vid_out = vidioc_g_fmt, + .vidioc_enum_output = vidioc_enum_output, + .vidioc_g_output = vidioc_g_output, + .vidioc_s_output = vidioc_s_output, + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_expbuf = vb2_ioctl_expbuf, + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, +}; + +static int fh_open(struct file *file) +{ + struct mgb4_vout_dev *voutdev = video_drvdata(file); + struct mgb4_regs *video = &voutdev->mgbdev->video; + struct device *dev = &voutdev->mgbdev->pdev->dev; + u32 config, resolution; + int rv; + + /* Return EBUSY when the device is in loopback mode */ + config = mgb4_read_reg(video, voutdev->config->regs.config); + if ((config & 0xc) >> 2 != voutdev->config->id + MGB4_VIN_DEVICES) { + dev_dbg(dev, "can not open - device in loopback mode"); + return -EBUSY; + } + + mutex_lock(&voutdev->lock); + + rv = v4l2_fh_open(file); + if (rv) + goto out; + + if (!v4l2_fh_is_singular_file(file)) + goto out; + + resolution = mgb4_read_reg(video, voutdev->config->regs.resolution); + voutdev->width = resolution >> 16; + voutdev->height = resolution & 0xFFFF; + +out: + mutex_unlock(&voutdev->lock); + return rv; +} + +static const struct v4l2_file_operations video_fops = { + .owner = THIS_MODULE, + .open = fh_open, + .release = vb2_fop_release, + .unlocked_ioctl = video_ioctl2, + .write = vb2_fop_write, + .mmap = vb2_fop_mmap, + .poll = vb2_fop_poll, +}; + +static void dma_transfer(struct work_struct *work) +{ + struct mgb4_vout_dev *voutdev = container_of(work, struct mgb4_vout_dev, + dma_work); + struct device *dev = &voutdev->mgbdev->pdev->dev; + struct mgb4_regs *video = &voutdev->mgbdev->video; + struct mgb4_frame_buffer *buf = NULL; + unsigned long flags; + u32 addr; + int rv; + + spin_lock_irqsave(&voutdev->qlock, flags); + if (!list_empty(&voutdev->buf_list)) { + buf = list_first_entry(&voutdev->buf_list, + struct mgb4_frame_buffer, list); + list_del_init(voutdev->buf_list.next); + } + spin_unlock_irqrestore(&voutdev->qlock, flags); + + if (!buf) + return; + + addr = mgb4_read_reg(video, voutdev->config->regs.address); + if (addr >= MGB4_ERR_QUEUE_FULL) { + dev_dbg(dev, "frame queue error (%d)\n", (int)addr); + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); + return; + } + + rv = mgb4_dma_transfer(voutdev->mgbdev, voutdev->config->dma_channel, + true, addr, + vb2_dma_sg_plane_desc(&buf->vb.vb2_buf, 0)); + if (rv < 0) { + dev_warn(dev, "DMA transfer error\n"); + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); + } else { + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE); + } +} + +static irqreturn_t handler(int irq, void *ctx) +{ + struct mgb4_vout_dev *voutdev = (struct mgb4_vout_dev *)ctx; + struct mgb4_regs *video = &voutdev->mgbdev->video; + + schedule_work(&voutdev->dma_work); + + mgb4_write_reg(video, 0xB4, 1U << voutdev->config->irq); + + return IRQ_HANDLED; +} + +static int ser_init(struct mgb4_vout_dev *voutdev, int id) +{ + int rv; + const struct i2c_board_info *info = &fpdl3_ser_info[id]; + struct mgb4_i2c_client *ser = &voutdev->ser; + struct device *dev = &voutdev->mgbdev->pdev->dev; + + if (MGB4_IS_GMSL(voutdev->mgbdev)) + return 0; + + rv = mgb4_i2c_init(ser, voutdev->mgbdev->i2c_adap, info, 8); + if (rv < 0) { + dev_err(dev, "failed to create serializer\n"); + return rv; + } + rv = mgb4_i2c_configure(ser, fpdl3_i2c, ARRAY_SIZE(fpdl3_i2c)); + if (rv < 0) { + dev_err(dev, "failed to configure serializer\n"); + goto err_i2c_dev; + } + + return 0; + +err_i2c_dev: + mgb4_i2c_free(ser); + + return rv; +} + +static void fpga_init(struct mgb4_vout_dev *voutdev) +{ + struct mgb4_regs *video = &voutdev->mgbdev->video; + const struct mgb4_vout_regs *regs = &voutdev->config->regs; + + mgb4_write_reg(video, regs->config, 0x00000011); + mgb4_write_reg(video, regs->resolution, + (MGB4_DEFAULT_WIDTH << 16) | MGB4_DEFAULT_HEIGHT); + mgb4_write_reg(video, regs->hsync, 0x00102020); + mgb4_write_reg(video, regs->vsync, 0x40020202); + mgb4_write_reg(video, regs->frame_period, MGB4_DEFAULT_PERIOD); + mgb4_write_reg(video, regs->padding, 0x00000000); + + voutdev->freq = mgb4_cmt_set_vout_freq(voutdev, 70000 >> 1) << 1; + + mgb4_write_reg(video, regs->config, + (voutdev->config->id + MGB4_VIN_DEVICES) << 2 | 1 << 4); +} + +#ifdef CONFIG_DEBUG_FS +static void debugfs_init(struct mgb4_vout_dev *voutdev) +{ + struct mgb4_regs *video = &voutdev->mgbdev->video; + + voutdev->debugfs = debugfs_create_dir(voutdev->vdev.name, + voutdev->mgbdev->debugfs); + if (!voutdev->debugfs) + return; + + voutdev->regs[0].name = "CONFIG"; + voutdev->regs[0].offset = voutdev->config->regs.config; + voutdev->regs[1].name = "STATUS"; + voutdev->regs[1].offset = voutdev->config->regs.status; + voutdev->regs[2].name = "RESOLUTION"; + voutdev->regs[2].offset = voutdev->config->regs.resolution; + voutdev->regs[3].name = "VIDEO_PARAMS_1"; + voutdev->regs[3].offset = voutdev->config->regs.hsync; + voutdev->regs[4].name = "VIDEO_PARAMS_2"; + voutdev->regs[4].offset = voutdev->config->regs.vsync; + voutdev->regs[5].name = "FRAME_PERIOD"; + voutdev->regs[5].offset = voutdev->config->regs.frame_period; + voutdev->regs[6].name = "PADDING"; + voutdev->regs[6].offset = voutdev->config->regs.padding; + + voutdev->regset.base = video->membase; + voutdev->regset.regs = voutdev->regs; + voutdev->regset.nregs = ARRAY_SIZE(voutdev->regs); + + debugfs_create_regset32("registers", 0444, voutdev->debugfs, + &voutdev->regset); +} +#endif + +struct mgb4_vout_dev *mgb4_vout_create(struct mgb4_dev *mgbdev, int id) +{ + int rv, irq; + const struct attribute_group **groups; + struct mgb4_vout_dev *voutdev; + struct pci_dev *pdev = mgbdev->pdev; + struct device *dev = &pdev->dev; + + voutdev = kzalloc(sizeof(*voutdev), GFP_KERNEL); + if (!voutdev) + return NULL; + + voutdev->mgbdev = mgbdev; + voutdev->config = &vout_cfg[id]; + + /* Frame queue */ + INIT_LIST_HEAD(&voutdev->buf_list); + spin_lock_init(&voutdev->qlock); + + /* DMA transfer stuff */ + INIT_WORK(&voutdev->dma_work, dma_transfer); + + /* IRQ callback */ + irq = xdma_get_user_irq(mgbdev->xdev, voutdev->config->irq); + rv = request_irq(irq, handler, 0, "mgb4-vout", voutdev); + if (rv) { + dev_err(dev, "failed to register irq handler\n"); + goto err_alloc; + } + + /* Set the FPGA registers default values */ + fpga_init(voutdev); + + /* Set the serializer default values */ + rv = ser_init(voutdev, id); + if (rv) + goto err_irq; + + /* V4L2 stuff init */ + rv = v4l2_device_register(dev, &voutdev->v4l2dev); + if (rv) { + dev_err(dev, "failed to register v4l2 device\n"); + goto err_irq; + } + + mutex_init(&voutdev->lock); + + voutdev->queue.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; + voutdev->queue.io_modes = VB2_MMAP | VB2_DMABUF | VB2_WRITE; + voutdev->queue.buf_struct_size = sizeof(struct mgb4_frame_buffer); + voutdev->queue.ops = &queue_ops; + voutdev->queue.mem_ops = &vb2_dma_sg_memops; + voutdev->queue.gfp_flags = GFP_DMA32; + voutdev->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + voutdev->queue.min_buffers_needed = 2; + voutdev->queue.drv_priv = voutdev; + voutdev->queue.lock = &voutdev->lock; + voutdev->queue.dev = dev; + rv = vb2_queue_init(&voutdev->queue); + if (rv) { + dev_err(dev, "failed to initialize vb2 queue\n"); + goto err_v4l2_dev; + } + + snprintf(voutdev->vdev.name, sizeof(voutdev->vdev.name), "mgb4-out%d", + id + 1); + voutdev->vdev.device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE + | V4L2_CAP_STREAMING; + voutdev->vdev.vfl_dir = VFL_DIR_TX; + voutdev->vdev.fops = &video_fops; + voutdev->vdev.ioctl_ops = &video_ioctl_ops; + voutdev->vdev.release = video_device_release_empty; + voutdev->vdev.v4l2_dev = &voutdev->v4l2dev; + voutdev->vdev.lock = &voutdev->lock; + voutdev->vdev.queue = &voutdev->queue; + video_set_drvdata(&voutdev->vdev, voutdev); + + rv = video_register_device(&voutdev->vdev, VFL_TYPE_VIDEO, -1); + if (rv) { + dev_err(dev, "failed to register video device\n"); + goto err_v4l2_dev; + } + + /* Module sysfs attributes */ + groups = MGB4_IS_GMSL(mgbdev) + ? mgb4_gmsl_out_groups : mgb4_fpdl3_out_groups; + rv = device_add_groups(&voutdev->vdev.dev, groups); + if (rv) { + dev_err(dev, "failed to create sysfs attributes\n"); + goto err_video_dev; + } + +#ifdef CONFIG_DEBUG_FS + debugfs_init(voutdev); +#endif + + return voutdev; + +err_video_dev: + video_unregister_device(&voutdev->vdev); +err_v4l2_dev: + v4l2_device_unregister(&voutdev->v4l2dev); +err_irq: + free_irq(irq, voutdev); +err_alloc: + kfree(voutdev); + + return NULL; +} + +void mgb4_vout_free(struct mgb4_vout_dev *voutdev) +{ + const struct attribute_group **groups; + int irq = xdma_get_user_irq(voutdev->mgbdev->xdev, voutdev->config->irq); + + free_irq(irq, voutdev); + +#ifdef CONFIG_DEBUG_FS + debugfs_remove_recursive(voutdev->debugfs); +#endif + + groups = MGB4_IS_GMSL(voutdev->mgbdev) + ? mgb4_gmsl_out_groups : mgb4_fpdl3_out_groups; + device_remove_groups(&voutdev->vdev.dev, groups); + + mgb4_i2c_free(&voutdev->ser); + video_unregister_device(&voutdev->vdev); + v4l2_device_unregister(&voutdev->v4l2dev); + + kfree(voutdev); +} diff --git a/drivers/media/pci/mgb4/mgb4_vout.h b/drivers/media/pci/mgb4/mgb4_vout.h new file mode 100644 index 0000000000..b163dee711 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_vout.h @@ -0,0 +1,65 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + */ + +#ifndef __MGB4_VOUT_H__ +#define __MGB4_VOUT_H__ + +#include <media/v4l2-device.h> +#include <media/v4l2-dev.h> +#include <media/v4l2-ctrls.h> +#include <media/videobuf2-core.h> +#include <linux/debugfs.h> +#include "mgb4_i2c.h" + +struct mgb4_vout_regs { + u32 address; + u32 config; + u32 status; + u32 resolution; + u32 frame_period; + u32 hsync; + u32 vsync; + u32 padding; +}; + +struct mgb4_vout_config { + int id; + int dma_channel; + int irq; + struct mgb4_vout_regs regs; +}; + +struct mgb4_vout_dev { + struct mgb4_dev *mgbdev; + struct v4l2_device v4l2dev; + struct video_device vdev; + struct vb2_queue queue; + struct mutex lock; /* vdev lock */ + + spinlock_t qlock; /* buffer queue lock */ + struct list_head buf_list; + struct work_struct dma_work; + + u32 width; + u32 height; + u32 freq; + u32 padding; + + struct mgb4_i2c_client ser; + + const struct mgb4_vout_config *config; + +#ifdef CONFIG_DEBUG_FS + struct dentry *debugfs; + struct debugfs_regset32 regset; + struct debugfs_reg32 regs[7]; +#endif +}; + +struct mgb4_vout_dev *mgb4_vout_create(struct mgb4_dev *mgbdev, int id); +void mgb4_vout_free(struct mgb4_vout_dev *voutdev); + +#endif |