358 lines
9.4 KiB
C
358 lines
9.4 KiB
C
/* 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 / 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
|