drivers/media/rc/nuvoton-cir.h - kernel/msm-4.9 - Gitiles

 /*
  * 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.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  * USA
  */

 #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_pr(level, text, ...) \
 	printk(level KBUILD_MODNAME ": " text, ## __VA_ARGS__)

 #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__)


 /*
  * Original lirc driver said min value of 76, and recommended value of 256
  * for the buffer length, but then used 2048. Never mind that the size of the
  * RX FIFO is 32 bytes... So I'm using 32 for RX and 256 for TX atm, but I'm
  * not sure if maybe that TX value is off by a factor of 8 (bits vs. bytes),
  * and I don't have TX-capable hardware to test/debug on...
  */
 #define TX_BUF_LEN 256
 #define RX_BUF_LEN 32

 struct nvt_dev {
 	struct pnp_dev *pdev;
 	struct rc_dev *rdev;
 	struct ir_raw_event rawir;

 	spinlock_t nvt_lock;
 	bool in_use;

 	/* for rx */
 	u8 buf[RX_BUF_LEN];
 	unsigned int pkts;

 	struct {
 		spinlock_t lock;
 		u8 buf[TX_BUF_LEN];
 		unsigned int buf_count;
 		unsigned int cur_buf_num;
 		wait_queue_head_t queue;
 		u8 tx_state;
 	} tx;

 	/* EFER Config register index/data pair */
 	u8 cr_efir;
 	u8 cr_efdr;

 	/* hardware I/O settings */
 	unsigned long cir_addr;
 	unsigned long cir_wake_addr;
 	int cir_irq;
 	int cir_wake_irq;

 	/* hardware id */
 	u8 chip_major;
 	u8 chip_minor;

 	/* hardware features */
 	bool hw_learning_capable;
 	bool hw_tx_capable;

 	/* rx settings */
 	bool learning_enabled;
 	bool carrier_detect_enabled;

 	/* track cir wake state */
 	u8 wake_state;
 	/* for study */
 	u8 study_state;
 	/* carrier period = 1 / frequency */
 	u32 carrier;
 };

 /* study states */
 #define ST_STUDY_NONE      0x0
 #define ST_STUDY_START     0x1
 #define ST_STUDY_CARRIER   0x2
 #define ST_STUDY_ALL_RECV  0x4

 /* wake states */
 #define ST_WAKE_NONE	0x0
 #define ST_WAKE_START	0x1
 #define ST_WAKE_FINISH	0x2

 /* receive states */
 #define ST_RX_WAIT_7F		0x1
 #define ST_RX_WAIT_HEAD		0x2
 #define ST_RX_WAIT_SILENT_END	0x4

 /* send states */
 #define ST_TX_NONE	0x0
 #define ST_TX_REQUEST	0x2
 #define ST_TX_REPLY	0x4

 /* 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 (0x7d0 = 2000) */
 #define CIR_RX_LIMIT_COUNT	0x7d0

 /* 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_TE		0x08
 #define CIR_WAKE_IREN_TTR		0x04
 #define CIR_WAKE_IREN_TFU		0x02
 #define CIR_WAKE_IREN_GH		0x01

 /* 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

 /* Chip IDs found in CR_CHIP_ID_{HI,LO} */
 #define CHIP_ID_HIGH		0xb4
 #define CHIP_ID_LOW		0x72
 #define CHIP_ID_LOW2		0x73

 /* 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_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 CIR_INTR_MOUSE_IRQ_BIT	0x80
 #define PME_INTR_CIR_PASS_BIT	0x08

 #define OUTPUT_PIN_SEL_MASK	0xbc
 #define OUTPUT_ENABLE_CIR	0x01 /* Pin95=CIRRX, Pin96=CIRTX1 */
 #define OUTPUT_ENABLE_CIRWB	0x40 /* 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
	/*
	* 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.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
	* USA
	*/

	#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_pr(level, text, ...) \
	printk(level KBUILD_MODNAME ": " text, ## __VA_ARGS__)

	#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__)


	/*
	* Original lirc driver said min value of 76, and recommended value of 256
	* for the buffer length, but then used 2048. Never mind that the size of the
	* RX FIFO is 32 bytes... So I'm using 32 for RX and 256 for TX atm, but I'm
	* not sure if maybe that TX value is off by a factor of 8 (bits vs. bytes),
	* and I don't have TX-capable hardware to test/debug on...
	*/
	#define TX_BUF_LEN 256
	#define RX_BUF_LEN 32

	struct nvt_dev {
	struct pnp_dev *pdev;
	struct rc_dev *rdev;
	struct ir_raw_event rawir;

	spinlock_t nvt_lock;
	bool in_use;

	/* for rx */
	u8 buf[RX_BUF_LEN];
	unsigned int pkts;

	struct {
	spinlock_t lock;
	u8 buf[TX_BUF_LEN];
	unsigned int buf_count;
	unsigned int cur_buf_num;
	wait_queue_head_t queue;
	u8 tx_state;
	} tx;

	/* EFER Config register index/data pair */
	u8 cr_efir;
	u8 cr_efdr;

	/* hardware I/O settings */
	unsigned long cir_addr;
	unsigned long cir_wake_addr;
	int cir_irq;
	int cir_wake_irq;

	/* hardware id */
	u8 chip_major;
	u8 chip_minor;

	/* hardware features */
	bool hw_learning_capable;
	bool hw_tx_capable;

	/* rx settings */
	bool learning_enabled;
	bool carrier_detect_enabled;

	/* track cir wake state */
	u8 wake_state;
	/* for study */
	u8 study_state;
	/* carrier period = 1 / frequency */
	u32 carrier;
	};

	/* study states */
	#define ST_STUDY_NONE 0x0
	#define ST_STUDY_START 0x1
	#define ST_STUDY_CARRIER 0x2
	#define ST_STUDY_ALL_RECV 0x4

	/* wake states */
	#define ST_WAKE_NONE 0x0
	#define ST_WAKE_START 0x1
	#define ST_WAKE_FINISH 0x2

	/* receive states */
	#define ST_RX_WAIT_7F 0x1
	#define ST_RX_WAIT_HEAD 0x2
	#define ST_RX_WAIT_SILENT_END 0x4

	/* send states */
	#define ST_TX_NONE 0x0
	#define ST_TX_REQUEST 0x2
	#define ST_TX_REPLY 0x4

	/* 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 (0x7d0 = 2000) */
	#define CIR_RX_LIMIT_COUNT 0x7d0

	/* 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_TE 0x08
	#define CIR_WAKE_IREN_TTR 0x04
	#define CIR_WAKE_IREN_TFU 0x02
	#define CIR_WAKE_IREN_GH 0x01

	/* 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

	/* Chip IDs found in CR_CHIP_ID_{HI,LO} */
	#define CHIP_ID_HIGH 0xb4
	#define CHIP_ID_LOW 0x72
	#define CHIP_ID_LOW2 0x73

	/* 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_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 CIR_INTR_MOUSE_IRQ_BIT 0x80
	#define PME_INTR_CIR_PASS_BIT 0x08

	#define OUTPUT_PIN_SEL_MASK 0xbc
	#define OUTPUT_ENABLE_CIR 0x01 /* Pin95=CIRRX, Pin96=CIRTX1 */
	#define OUTPUT_ENABLE_CIRWB 0x40 /* 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