| /* |
| * 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. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of the |
| * License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| */ |
| |
| #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 / US_TO_NS(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 |
