diff options
Diffstat (limited to 'drivers/media/pci/cx18/cx18-av-firmware.c')
| -rw-r--r-- | drivers/media/pci/cx18/cx18-av-firmware.c | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/drivers/media/pci/cx18/cx18-av-firmware.c b/drivers/media/pci/cx18/cx18-av-firmware.c new file mode 100644 index 000000000..61aeb8c9a --- /dev/null +++ b/drivers/media/pci/cx18/cx18-av-firmware.c @@ -0,0 +1,210 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * cx18 ADEC firmware functions + * + * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl> + * Copyright (C) 2008 Andy Walls <awalls@md.metrocast.net> + */ + +#include "cx18-driver.h" +#include "cx18-io.h" +#include <linux/firmware.h> + +#define CX18_AUDIO_ENABLE 0xc72014 +#define CX18_AI1_MUX_MASK 0x30 +#define CX18_AI1_MUX_I2S1 0x00 +#define CX18_AI1_MUX_I2S2 0x10 +#define CX18_AI1_MUX_843_I2S 0x20 +#define CX18_AI1_MUX_INVALID 0x30 + +#define FWFILE "v4l-cx23418-dig.fw" + +static int cx18_av_verifyfw(struct cx18 *cx, const struct firmware *fw) +{ + struct v4l2_subdev *sd = &cx->av_state.sd; + int ret = 0; + const u8 *data; + u32 size; + int addr; + u32 expected, dl_control; + + /* Ensure we put the 8051 in reset and enable firmware upload mode */ + dl_control = cx18_av_read4(cx, CXADEC_DL_CTL); + do { + dl_control &= 0x00ffffff; + dl_control |= 0x0f000000; + cx18_av_write4_noretry(cx, CXADEC_DL_CTL, dl_control); + dl_control = cx18_av_read4(cx, CXADEC_DL_CTL); + } while ((dl_control & 0xff000000) != 0x0f000000); + + /* Read and auto increment until at address 0x0000 */ + while (dl_control & 0x3fff) + dl_control = cx18_av_read4(cx, CXADEC_DL_CTL); + + data = fw->data; + size = fw->size; + for (addr = 0; addr < size; addr++) { + dl_control &= 0xffff3fff; /* ignore top 2 bits of address */ + expected = 0x0f000000 | ((u32)data[addr] << 16) | addr; + if (expected != dl_control) { + CX18_ERR_DEV(sd, "verification of %s firmware load failed: expected %#010x got %#010x\n", + FWFILE, expected, dl_control); + ret = -EIO; + break; + } + dl_control = cx18_av_read4(cx, CXADEC_DL_CTL); + } + if (ret == 0) + CX18_INFO_DEV(sd, "verified load of %s firmware (%d bytes)\n", + FWFILE, size); + return ret; +} + +int cx18_av_loadfw(struct cx18 *cx) +{ + struct v4l2_subdev *sd = &cx->av_state.sd; + const struct firmware *fw = NULL; + u32 size; + u32 u, v; + const u8 *ptr; + int i; + int retries1 = 0; + + if (request_firmware(&fw, FWFILE, &cx->pci_dev->dev) != 0) { + CX18_ERR_DEV(sd, "unable to open firmware %s\n", FWFILE); + return -EINVAL; + } + + /* The firmware load often has byte errors, so allow for several + retries, both at byte level and at the firmware load level. */ + while (retries1 < 5) { + cx18_av_write4_expect(cx, CXADEC_CHIP_CTRL, 0x00010000, + 0x00008430, 0xffffffff); /* cx25843 */ + cx18_av_write_expect(cx, CXADEC_STD_DET_CTL, 0xf6, 0xf6, 0xff); + + /* Reset the Mako core, Register is alias of CXADEC_CHIP_CTRL */ + cx18_av_write4_expect(cx, 0x8100, 0x00010000, + 0x00008430, 0xffffffff); /* cx25843 */ + + /* Put the 8051 in reset and enable firmware upload */ + cx18_av_write4_noretry(cx, CXADEC_DL_CTL, 0x0F000000); + + ptr = fw->data; + size = fw->size; + + for (i = 0; i < size; i++) { + u32 dl_control = 0x0F000000 | i | ((u32)ptr[i] << 16); + u32 value = 0; + int retries2; + int unrec_err = 0; + + for (retries2 = 0; retries2 < CX18_MAX_MMIO_WR_RETRIES; + retries2++) { + cx18_av_write4_noretry(cx, CXADEC_DL_CTL, + dl_control); + udelay(10); + value = cx18_av_read4(cx, CXADEC_DL_CTL); + if (value == dl_control) + break; + /* Check if we can correct the byte by changing + the address. We can only write the lower + address byte of the address. */ + if ((value & 0x3F00) != (dl_control & 0x3F00)) { + unrec_err = 1; + break; + } + } + if (unrec_err || retries2 >= CX18_MAX_MMIO_WR_RETRIES) + break; + } + if (i == size) + break; + retries1++; + } + if (retries1 >= 5) { + CX18_ERR_DEV(sd, "unable to load firmware %s\n", FWFILE); + release_firmware(fw); + return -EIO; + } + + cx18_av_write4_expect(cx, CXADEC_DL_CTL, + 0x03000000 | fw->size, 0x03000000, 0x13000000); + + CX18_INFO_DEV(sd, "loaded %s firmware (%d bytes)\n", FWFILE, size); + + if (cx18_av_verifyfw(cx, fw) == 0) + cx18_av_write4_expect(cx, CXADEC_DL_CTL, + 0x13000000 | fw->size, 0x13000000, 0x13000000); + + /* Output to the 416 */ + cx18_av_and_or4(cx, CXADEC_PIN_CTRL1, ~0, 0x78000); + + /* Audio input control 1 set to Sony mode */ + /* Audio output input 2 is 0 for slave operation input */ + /* 0xC4000914[5]: 0 = left sample on WS=0, 1 = left sample on WS=1 */ + /* 0xC4000914[7]: 0 = Philips mode, 1 = Sony mode (1st SCK rising edge + after WS transition for first bit of audio word. */ + cx18_av_write4(cx, CXADEC_I2S_IN_CTL, 0x000000A0); + + /* Audio output control 1 is set to Sony mode */ + /* Audio output control 2 is set to 1 for master mode */ + /* 0xC4000918[5]: 0 = left sample on WS=0, 1 = left sample on WS=1 */ + /* 0xC4000918[7]: 0 = Philips mode, 1 = Sony mode (1st SCK rising edge + after WS transition for first bit of audio word. */ + /* 0xC4000918[8]: 0 = slave operation, 1 = master (SCK_OUT and WS_OUT + are generated) */ + cx18_av_write4(cx, CXADEC_I2S_OUT_CTL, 0x000001A0); + + /* set alt I2s master clock to /0x16 and enable alt divider i2s + passthrough */ + cx18_av_write4(cx, CXADEC_PIN_CFG3, 0x5600B687); + + cx18_av_write4_expect(cx, CXADEC_STD_DET_CTL, 0x000000F6, 0x000000F6, + 0x3F00FFFF); + /* CxDevWrReg(CXADEC_STD_DET_CTL, 0x000000FF); */ + + /* Set bit 0 in register 0x9CC to signify that this is MiniMe. */ + /* Register 0x09CC is defined by the Merlin firmware, and doesn't + have a name in the spec. */ + cx18_av_write4(cx, 0x09CC, 1); + + v = cx18_read_reg(cx, CX18_AUDIO_ENABLE); + /* If bit 11 is 1, clear bit 10 */ + if (v & 0x800) + cx18_write_reg_expect(cx, v & 0xFFFFFBFF, CX18_AUDIO_ENABLE, + 0, 0x400); + + /* Toggle the AI1 MUX */ + v = cx18_read_reg(cx, CX18_AUDIO_ENABLE); + u = v & CX18_AI1_MUX_MASK; + v &= ~CX18_AI1_MUX_MASK; + if (u == CX18_AI1_MUX_843_I2S || u == CX18_AI1_MUX_INVALID) { + /* Switch to I2S1 */ + v |= CX18_AI1_MUX_I2S1; + cx18_write_reg_expect(cx, v | 0xb00, CX18_AUDIO_ENABLE, + v, CX18_AI1_MUX_MASK); + /* Switch back to the A/V decoder core I2S output */ + v = (v & ~CX18_AI1_MUX_MASK) | CX18_AI1_MUX_843_I2S; + } else { + /* Switch to the A/V decoder core I2S output */ + v |= CX18_AI1_MUX_843_I2S; + cx18_write_reg_expect(cx, v | 0xb00, CX18_AUDIO_ENABLE, + v, CX18_AI1_MUX_MASK); + /* Switch back to I2S1 or I2S2 */ + v = (v & ~CX18_AI1_MUX_MASK) | u; + } + cx18_write_reg_expect(cx, v | 0xb00, CX18_AUDIO_ENABLE, + v, CX18_AI1_MUX_MASK); + + /* Enable WW auto audio standard detection */ + v = cx18_av_read4(cx, CXADEC_STD_DET_CTL); + v |= 0xFF; /* Auto by default */ + v |= 0x400; /* Stereo by default */ + v |= 0x14000000; + cx18_av_write4_expect(cx, CXADEC_STD_DET_CTL, v, v, 0x3F00FFFF); + + release_firmware(fw); + return 0; +} + +MODULE_FIRMWARE(FWFILE); |