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yaml
---
r: 308449
b: refs/heads/master
c: 26f8d43
h: refs/heads/master
i:
  308447: c776a6c
v: v3
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Roland Stigge authored and Wolfram Sang committed May 12, 2012
1 parent f1a6eed commit d4cf27c
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2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: 77701a8bab89fb0f87271674e57b2ecf636fbc5f
refs/heads/master: 26f8d43df75c79332f3b7b60cc1c748e2cad5753
63 changes: 0 additions & 63 deletions trunk/arch/arm/mach-lpc32xx/include/mach/i2c.h

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64 changes: 0 additions & 64 deletions trunk/arch/arm/mach-pnx4008/include/mach/i2c.h

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49 changes: 46 additions & 3 deletions trunk/drivers/i2c/busses/i2c-pnx.c
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#include <linux/clk.h>
#include <linux/slab.h>

#include <mach/hardware.h>
#include <mach/i2c.h>

#define I2C_PNX_TIMEOUT 10 /* msec */
#define I2C_PNX_SPEED_KHZ 100
#define I2C_PNX_REGION_SIZE 0x100

enum {
mstatus_tdi = 0x00000001,
mstatus_afi = 0x00000002,
mstatus_nai = 0x00000004,
mstatus_drmi = 0x00000008,
mstatus_active = 0x00000020,
mstatus_scl = 0x00000040,
mstatus_sda = 0x00000080,
mstatus_rff = 0x00000100,
mstatus_rfe = 0x00000200,
mstatus_tff = 0x00000400,
mstatus_tfe = 0x00000800,
};

enum {
mcntrl_tdie = 0x00000001,
mcntrl_afie = 0x00000002,
mcntrl_naie = 0x00000004,
mcntrl_drmie = 0x00000008,
mcntrl_daie = 0x00000020,
mcntrl_rffie = 0x00000040,
mcntrl_tffie = 0x00000080,
mcntrl_reset = 0x00000100,
mcntrl_cdbmode = 0x00000400,
};

enum {
rw_bit = 1 << 0,
start_bit = 1 << 8,
stop_bit = 1 << 9,
};

#define I2C_REG_RX(a) ((a)->ioaddr) /* Rx FIFO reg (RO) */
#define I2C_REG_TX(a) ((a)->ioaddr) /* Tx FIFO reg (WO) */
#define I2C_REG_STS(a) ((a)->ioaddr + 0x04) /* Status reg (RO) */
#define I2C_REG_CTL(a) ((a)->ioaddr + 0x08) /* Ctl reg */
#define I2C_REG_CKL(a) ((a)->ioaddr + 0x0c) /* Clock divider low */
#define I2C_REG_CKH(a) ((a)->ioaddr + 0x10) /* Clock divider high */
#define I2C_REG_ADR(a) ((a)->ioaddr + 0x14) /* I2C address */
#define I2C_REG_RFL(a) ((a)->ioaddr + 0x18) /* Rx FIFO level (RO) */
#define I2C_REG_TFL(a) ((a)->ioaddr + 0x1c) /* Tx FIFO level (RO) */
#define I2C_REG_RXB(a) ((a)->ioaddr + 0x20) /* Num of bytes Rx-ed (RO) */
#define I2C_REG_TXB(a) ((a)->ioaddr + 0x24) /* Num of bytes Tx-ed (RO) */
#define I2C_REG_TXS(a) ((a)->ioaddr + 0x28) /* Tx slave FIFO (RO) */
#define I2C_REG_STFL(a) ((a)->ioaddr + 0x2c) /* Tx slave FIFO level (RO) */

static inline int wait_timeout(long timeout, struct i2c_pnx_algo_data *data)
{
while (timeout > 0 &&
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