diff options
Diffstat (limited to 'drivers/media/rc/nuvoton-cir.h')
| -rw-r--r-- | drivers/media/rc/nuvoton-cir.h | 357 |
1 files changed, 357 insertions, 0 deletions
diff --git a/drivers/media/rc/nuvoton-cir.h b/drivers/media/rc/nuvoton-cir.h new file mode 100644 index 000000000..ed7d93bea --- /dev/null +++ b/drivers/media/rc/nuvoton-cir.h @@ -0,0 +1,357 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Driver for Nuvoton Technology Corporation w83667hg/w83677hg-i CIR + * + * Copyright (C) 2010 Jarod Wilson <jarod@redhat.com> + * Copyright (C) 2009 Nuvoton PS Team + * + * Special thanks to Nuvoton for providing hardware, spec sheets and + * sample code upon which portions of this driver are based. Indirect + * thanks also to Maxim Levitsky, whose ene_ir driver this driver is + * modeled after. + */ + +#include <linux/spinlock.h> +#include <linux/ioctl.h> + +/* platform driver name to register */ +#define NVT_DRIVER_NAME "nuvoton-cir" + +/* debugging module parameter */ +static int debug; + + +#define nvt_dbg(text, ...) \ + if (debug) \ + printk(KERN_DEBUG \ + KBUILD_MODNAME ": " text "\n" , ## __VA_ARGS__) + +#define nvt_dbg_verbose(text, ...) \ + if (debug > 1) \ + printk(KERN_DEBUG \ + KBUILD_MODNAME ": " text "\n" , ## __VA_ARGS__) + +#define nvt_dbg_wake(text, ...) \ + if (debug > 2) \ + printk(KERN_DEBUG \ + KBUILD_MODNAME ": " text "\n" , ## __VA_ARGS__) + + +#define RX_BUF_LEN 32 + +#define SIO_ID_MASK 0xfff0 + +enum nvt_chip_ver { + NVT_UNKNOWN = 0, + NVT_W83667HG = 0xa510, + NVT_6775F = 0xb470, + NVT_6776F = 0xc330, + NVT_6779D = 0xc560, + NVT_INVALID = 0xffff, +}; + +struct nvt_chip { + const char *name; + enum nvt_chip_ver chip_ver; +}; + +struct nvt_dev { + struct rc_dev *rdev; + + spinlock_t lock; + + /* for rx */ + u8 buf[RX_BUF_LEN]; + unsigned int pkts; + + /* EFER Config register index/data pair */ + u32 cr_efir; + u32 cr_efdr; + + /* hardware I/O settings */ + unsigned long cir_addr; + unsigned long cir_wake_addr; + int cir_irq; + + enum nvt_chip_ver chip_ver; + /* hardware id */ + u8 chip_major; + u8 chip_minor; + + /* carrier period = 1 / frequency */ + u32 carrier; +}; + +/* buffer packet constants */ +#define BUF_PULSE_BIT 0x80 +#define BUF_LEN_MASK 0x7f +#define BUF_REPEAT_BYTE 0x70 +#define BUF_REPEAT_MASK 0xf0 + +/* CIR settings */ + +/* total length of CIR and CIR WAKE */ +#define CIR_IOREG_LENGTH 0x0f + +/* RX limit length, 8 high bits for SLCH, 8 low bits for SLCL */ +#define CIR_RX_LIMIT_COUNT (IR_DEFAULT_TIMEOUT / SAMPLE_PERIOD) + +/* CIR Regs */ +#define CIR_IRCON 0x00 +#define CIR_IRSTS 0x01 +#define CIR_IREN 0x02 +#define CIR_RXFCONT 0x03 +#define CIR_CP 0x04 +#define CIR_CC 0x05 +#define CIR_SLCH 0x06 +#define CIR_SLCL 0x07 +#define CIR_FIFOCON 0x08 +#define CIR_IRFIFOSTS 0x09 +#define CIR_SRXFIFO 0x0a +#define CIR_TXFCONT 0x0b +#define CIR_STXFIFO 0x0c +#define CIR_FCCH 0x0d +#define CIR_FCCL 0x0e +#define CIR_IRFSM 0x0f + +/* CIR IRCON settings */ +#define CIR_IRCON_RECV 0x80 +#define CIR_IRCON_WIREN 0x40 +#define CIR_IRCON_TXEN 0x20 +#define CIR_IRCON_RXEN 0x10 +#define CIR_IRCON_WRXINV 0x08 +#define CIR_IRCON_RXINV 0x04 + +#define CIR_IRCON_SAMPLE_PERIOD_SEL_1 0x00 +#define CIR_IRCON_SAMPLE_PERIOD_SEL_25 0x01 +#define CIR_IRCON_SAMPLE_PERIOD_SEL_50 0x02 +#define CIR_IRCON_SAMPLE_PERIOD_SEL_100 0x03 + +/* FIXME: make this a runtime option */ +/* select sample period as 50us */ +#define CIR_IRCON_SAMPLE_PERIOD_SEL CIR_IRCON_SAMPLE_PERIOD_SEL_50 + +/* CIR IRSTS settings */ +#define CIR_IRSTS_RDR 0x80 +#define CIR_IRSTS_RTR 0x40 +#define CIR_IRSTS_PE 0x20 +#define CIR_IRSTS_RFO 0x10 +#define CIR_IRSTS_TE 0x08 +#define CIR_IRSTS_TTR 0x04 +#define CIR_IRSTS_TFU 0x02 +#define CIR_IRSTS_GH 0x01 + +/* CIR IREN settings */ +#define CIR_IREN_RDR 0x80 +#define CIR_IREN_RTR 0x40 +#define CIR_IREN_PE 0x20 +#define CIR_IREN_RFO 0x10 +#define CIR_IREN_TE 0x08 +#define CIR_IREN_TTR 0x04 +#define CIR_IREN_TFU 0x02 +#define CIR_IREN_GH 0x01 + +/* CIR FIFOCON settings */ +#define CIR_FIFOCON_TXFIFOCLR 0x80 + +#define CIR_FIFOCON_TX_TRIGGER_LEV_31 0x00 +#define CIR_FIFOCON_TX_TRIGGER_LEV_24 0x10 +#define CIR_FIFOCON_TX_TRIGGER_LEV_16 0x20 +#define CIR_FIFOCON_TX_TRIGGER_LEV_8 0x30 + +/* FIXME: make this a runtime option */ +/* select TX trigger level as 16 */ +#define CIR_FIFOCON_TX_TRIGGER_LEV CIR_FIFOCON_TX_TRIGGER_LEV_16 + +#define CIR_FIFOCON_RXFIFOCLR 0x08 + +#define CIR_FIFOCON_RX_TRIGGER_LEV_1 0x00 +#define CIR_FIFOCON_RX_TRIGGER_LEV_8 0x01 +#define CIR_FIFOCON_RX_TRIGGER_LEV_16 0x02 +#define CIR_FIFOCON_RX_TRIGGER_LEV_24 0x03 + +/* FIXME: make this a runtime option */ +/* select RX trigger level as 24 */ +#define CIR_FIFOCON_RX_TRIGGER_LEV CIR_FIFOCON_RX_TRIGGER_LEV_24 + +/* CIR IRFIFOSTS settings */ +#define CIR_IRFIFOSTS_IR_PENDING 0x80 +#define CIR_IRFIFOSTS_RX_GS 0x40 +#define CIR_IRFIFOSTS_RX_FTA 0x20 +#define CIR_IRFIFOSTS_RX_EMPTY 0x10 +#define CIR_IRFIFOSTS_RX_FULL 0x08 +#define CIR_IRFIFOSTS_TX_FTA 0x04 +#define CIR_IRFIFOSTS_TX_EMPTY 0x02 +#define CIR_IRFIFOSTS_TX_FULL 0x01 + + +/* CIR WAKE UP Regs */ +#define CIR_WAKE_IRCON 0x00 +#define CIR_WAKE_IRSTS 0x01 +#define CIR_WAKE_IREN 0x02 +#define CIR_WAKE_FIFO_CMP_DEEP 0x03 +#define CIR_WAKE_FIFO_CMP_TOL 0x04 +#define CIR_WAKE_FIFO_COUNT 0x05 +#define CIR_WAKE_SLCH 0x06 +#define CIR_WAKE_SLCL 0x07 +#define CIR_WAKE_FIFOCON 0x08 +#define CIR_WAKE_SRXFSTS 0x09 +#define CIR_WAKE_SAMPLE_RX_FIFO 0x0a +#define CIR_WAKE_WR_FIFO_DATA 0x0b +#define CIR_WAKE_RD_FIFO_ONLY 0x0c +#define CIR_WAKE_RD_FIFO_ONLY_IDX 0x0d +#define CIR_WAKE_FIFO_IGNORE 0x0e +#define CIR_WAKE_IRFSM 0x0f + +/* CIR WAKE UP IRCON settings */ +#define CIR_WAKE_IRCON_DEC_RST 0x80 +#define CIR_WAKE_IRCON_MODE1 0x40 +#define CIR_WAKE_IRCON_MODE0 0x20 +#define CIR_WAKE_IRCON_RXEN 0x10 +#define CIR_WAKE_IRCON_R 0x08 +#define CIR_WAKE_IRCON_RXINV 0x04 + +/* FIXME/jarod: make this a runtime option */ +/* select a same sample period like cir register */ +#define CIR_WAKE_IRCON_SAMPLE_PERIOD_SEL CIR_IRCON_SAMPLE_PERIOD_SEL_50 + +/* CIR WAKE IRSTS Bits */ +#define CIR_WAKE_IRSTS_RDR 0x80 +#define CIR_WAKE_IRSTS_RTR 0x40 +#define CIR_WAKE_IRSTS_PE 0x20 +#define CIR_WAKE_IRSTS_RFO 0x10 +#define CIR_WAKE_IRSTS_GH 0x08 +#define CIR_WAKE_IRSTS_IR_PENDING 0x01 + +/* CIR WAKE UP IREN Bits */ +#define CIR_WAKE_IREN_RDR 0x80 +#define CIR_WAKE_IREN_RTR 0x40 +#define CIR_WAKE_IREN_PE 0x20 +#define CIR_WAKE_IREN_RFO 0x10 +#define CIR_WAKE_IREN_GH 0x08 + +/* CIR WAKE FIFOCON settings */ +#define CIR_WAKE_FIFOCON_RXFIFOCLR 0x08 + +#define CIR_WAKE_FIFOCON_RX_TRIGGER_LEV_67 0x00 +#define CIR_WAKE_FIFOCON_RX_TRIGGER_LEV_66 0x01 +#define CIR_WAKE_FIFOCON_RX_TRIGGER_LEV_65 0x02 +#define CIR_WAKE_FIFOCON_RX_TRIGGER_LEV_64 0x03 + +/* FIXME: make this a runtime option */ +/* select WAKE UP RX trigger level as 67 */ +#define CIR_WAKE_FIFOCON_RX_TRIGGER_LEV CIR_WAKE_FIFOCON_RX_TRIGGER_LEV_67 + +/* CIR WAKE SRXFSTS settings */ +#define CIR_WAKE_IRFIFOSTS_RX_GS 0x80 +#define CIR_WAKE_IRFIFOSTS_RX_FTA 0x40 +#define CIR_WAKE_IRFIFOSTS_RX_EMPTY 0x20 +#define CIR_WAKE_IRFIFOSTS_RX_FULL 0x10 + +/* + * The CIR Wake FIFO buffer is 67 bytes long, but the stock remote wakes + * the system comparing only 65 bytes (fails with this set to 67) + */ +#define CIR_WAKE_FIFO_CMP_BYTES 65 +/* CIR Wake byte comparison tolerance */ +#define CIR_WAKE_CMP_TOLERANCE 5 + +/* + * Extended Function Enable Registers: + * Extended Function Index Register + * Extended Function Data Register + */ +#define CR_EFIR 0x2e +#define CR_EFDR 0x2f + +/* Possible alternate EFER values, depends on how the chip is wired */ +#define CR_EFIR2 0x4e +#define CR_EFDR2 0x4f + +/* Extended Function Mode enable/disable magic values */ +#define EFER_EFM_ENABLE 0x87 +#define EFER_EFM_DISABLE 0xaa + +/* Config regs we need to care about */ +#define CR_SOFTWARE_RESET 0x02 +#define CR_LOGICAL_DEV_SEL 0x07 +#define CR_CHIP_ID_HI 0x20 +#define CR_CHIP_ID_LO 0x21 +#define CR_DEV_POWER_DOWN 0x22 /* bit 2 is CIR power, default power on */ +#define CR_OUTPUT_PIN_SEL 0x27 +#define CR_MULTIFUNC_PIN_SEL 0x2c +#define CR_LOGICAL_DEV_EN 0x30 /* valid for all logical devices */ +/* next three regs valid for both the CIR and CIR_WAKE logical devices */ +#define CR_CIR_BASE_ADDR_HI 0x60 +#define CR_CIR_BASE_ADDR_LO 0x61 +#define CR_CIR_IRQ_RSRC 0x70 +/* next three regs valid only for ACPI logical dev */ +#define CR_ACPI_CIR_WAKE 0xe0 +#define CR_ACPI_IRQ_EVENTS 0xf6 +#define CR_ACPI_IRQ_EVENTS2 0xf7 + +/* Logical devices that we need to care about */ +#define LOGICAL_DEV_LPT 0x01 +#define LOGICAL_DEV_CIR 0x06 +#define LOGICAL_DEV_ACPI 0x0a +#define LOGICAL_DEV_CIR_WAKE 0x0e + +#define LOGICAL_DEV_DISABLE 0x00 +#define LOGICAL_DEV_ENABLE 0x01 + +#define CIR_WAKE_ENABLE_BIT 0x08 +#define PME_INTR_CIR_PASS_BIT 0x08 + +/* w83677hg CIR pin config */ +#define OUTPUT_PIN_SEL_MASK 0xbc +#define OUTPUT_ENABLE_CIR 0x01 /* Pin95=CIRRX, Pin96=CIRTX1 */ +#define OUTPUT_ENABLE_CIRWB 0x40 /* enable wide-band sensor */ + +/* w83667hg CIR pin config */ +#define MULTIFUNC_PIN_SEL_MASK 0x1f +#define MULTIFUNC_ENABLE_CIR 0x80 /* Pin75=CIRRX, Pin76=CIRTX1 */ +#define MULTIFUNC_ENABLE_CIRWB 0x20 /* enable wide-band sensor */ + +/* MCE CIR signal length, related on sample period */ + +/* MCE CIR controller signal length: about 43ms + * 43ms / 50us (sample period) * 0.85 (inaccuracy) + */ +#define CONTROLLER_BUF_LEN_MIN 830 + +/* MCE CIR keyboard signal length: about 26ms + * 26ms / 50us (sample period) * 0.85 (inaccuracy) + */ +#define KEYBOARD_BUF_LEN_MAX 650 +#define KEYBOARD_BUF_LEN_MIN 610 + +/* MCE CIR mouse signal length: about 24ms + * 24ms / 50us (sample period) * 0.85 (inaccuracy) + */ +#define MOUSE_BUF_LEN_MIN 565 + +#define CIR_SAMPLE_PERIOD 50 +#define CIR_SAMPLE_LOW_INACCURACY 0.85 + +/* MAX silence time that driver will sent to lirc */ +#define MAX_SILENCE_TIME 60000 + +#if CIR_IRCON_SAMPLE_PERIOD_SEL == CIR_IRCON_SAMPLE_PERIOD_SEL_100 +#define SAMPLE_PERIOD 100 + +#elif CIR_IRCON_SAMPLE_PERIOD_SEL == CIR_IRCON_SAMPLE_PERIOD_SEL_50 +#define SAMPLE_PERIOD 50 + +#elif CIR_IRCON_SAMPLE_PERIOD_SEL == CIR_IRCON_SAMPLE_PERIOD_SEL_25 +#define SAMPLE_PERIOD 25 + +#else +#define SAMPLE_PERIOD 1 +#endif + +/* as VISTA MCE definition, valid carrier value */ +#define MAX_CARRIER 60000 +#define MIN_CARRIER 30000 + +/* max wakeup sequence length */ +#define WAKEUP_MAX_SIZE 65 |