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yaml
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r: 112464
b: refs/heads/master
c: 283afa0
h: refs/heads/master
v: v3
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Eric Miao authored and Russell King committed Oct 7, 2008
1 parent 4315525 commit 086f6dd
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Showing 3 changed files with 40 additions and 45 deletions.
2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: e7f3c60037fcad0edc0b79b8d285418246bcef40
refs/heads/master: 283afa06619ed3e4dd7b5431f862fe23625c452f
44 changes: 1 addition & 43 deletions trunk/arch/arm/mach-pxa/include/mach/pxa-regs.h
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/*
* I2C registers
* I2C registers - moved into drivers/i2c/busses/i2c-pxa.c
*/

#define IBMR __REG(0x40301680) /* I2C Bus Monitor Register - IBMR */
#define IDBR __REG(0x40301688) /* I2C Data Buffer Register - IDBR */
#define ICR __REG(0x40301690) /* I2C Control Register - ICR */
#define ISR __REG(0x40301698) /* I2C Status Register - ISR */
#define ISAR __REG(0x403016A0) /* I2C Slave Address Register - ISAR */

#define PWRIBMR __REG(0x40f00180) /* Power I2C Bus Monitor Register-IBMR */
#define PWRIDBR __REG(0x40f00188) /* Power I2C Data Buffer Register-IDBR */
#define PWRICR __REG(0x40f00190) /* Power I2C Control Register - ICR */
#define PWRISR __REG(0x40f00198) /* Power I2C Status Register - ISR */
#define PWRISAR __REG(0x40f001A0) /*Power I2C Slave Address Register-ISAR */

#define ICR_START (1 << 0) /* start bit */
#define ICR_STOP (1 << 1) /* stop bit */
#define ICR_ACKNAK (1 << 2) /* send ACK(0) or NAK(1) */
#define ICR_TB (1 << 3) /* transfer byte bit */
#define ICR_MA (1 << 4) /* master abort */
#define ICR_SCLE (1 << 5) /* master clock enable */
#define ICR_IUE (1 << 6) /* unit enable */
#define ICR_GCD (1 << 7) /* general call disable */
#define ICR_ITEIE (1 << 8) /* enable tx interrupts */
#define ICR_IRFIE (1 << 9) /* enable rx interrupts */
#define ICR_BEIE (1 << 10) /* enable bus error ints */
#define ICR_SSDIE (1 << 11) /* slave STOP detected int enable */
#define ICR_ALDIE (1 << 12) /* enable arbitration interrupt */
#define ICR_SADIE (1 << 13) /* slave address detected int enable */
#define ICR_UR (1 << 14) /* unit reset */
#define ICR_FM (1 << 15) /* fast mode */

#define ISR_RWM (1 << 0) /* read/write mode */
#define ISR_ACKNAK (1 << 1) /* ack/nak status */
#define ISR_UB (1 << 2) /* unit busy */
#define ISR_IBB (1 << 3) /* bus busy */
#define ISR_SSD (1 << 4) /* slave stop detected */
#define ISR_ALD (1 << 5) /* arbitration loss detected */
#define ISR_ITE (1 << 6) /* tx buffer empty */
#define ISR_IRF (1 << 7) /* rx buffer full */
#define ISR_GCAD (1 << 8) /* general call address detected */
#define ISR_SAD (1 << 9) /* slave address detected */
#define ISR_BED (1 << 10) /* bus error no ACK/NAK */


/*
* Serial Audio Controller
*/
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39 changes: 38 additions & 1 deletion trunk/drivers/i2c/busses/i2c-pxa.c
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#include <asm/irq.h>
#include <asm/io.h>
#include <mach/i2c.h>
#include <mach/pxa-regs.h>

/*
* I2C registers and bit definitions
*/
#define IBMR (0x00)
#define IDBR (0x08)
#define ICR (0x10)
#define ISR (0x18)
#define ISAR (0x20)

#define ICR_START (1 << 0) /* start bit */
#define ICR_STOP (1 << 1) /* stop bit */
#define ICR_ACKNAK (1 << 2) /* send ACK(0) or NAK(1) */
#define ICR_TB (1 << 3) /* transfer byte bit */
#define ICR_MA (1 << 4) /* master abort */
#define ICR_SCLE (1 << 5) /* master clock enable */
#define ICR_IUE (1 << 6) /* unit enable */
#define ICR_GCD (1 << 7) /* general call disable */
#define ICR_ITEIE (1 << 8) /* enable tx interrupts */
#define ICR_IRFIE (1 << 9) /* enable rx interrupts */
#define ICR_BEIE (1 << 10) /* enable bus error ints */
#define ICR_SSDIE (1 << 11) /* slave STOP detected int enable */
#define ICR_ALDIE (1 << 12) /* enable arbitration interrupt */
#define ICR_SADIE (1 << 13) /* slave address detected int enable */
#define ICR_UR (1 << 14) /* unit reset */
#define ICR_FM (1 << 15) /* fast mode */

#define ISR_RWM (1 << 0) /* read/write mode */
#define ISR_ACKNAK (1 << 1) /* ack/nak status */
#define ISR_UB (1 << 2) /* unit busy */
#define ISR_IBB (1 << 3) /* bus busy */
#define ISR_SSD (1 << 4) /* slave stop detected */
#define ISR_ALD (1 << 5) /* arbitration loss detected */
#define ISR_ITE (1 << 6) /* tx buffer empty */
#define ISR_IRF (1 << 7) /* rx buffer full */
#define ISR_GCAD (1 << 8) /* general call address detected */
#define ISR_SAD (1 << 9) /* slave address detected */
#define ISR_BED (1 << 10) /* bus error no ACK/NAK */

struct pxa_i2c {
spinlock_t lock;
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