cd93d625fd
Move this uncommon header out of the common header. Signed-off-by: Simon Glass <sjg@chromium.org>
79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
#ifndef _AT91_I2C_H
|
|
#define _AT91_I2C_H
|
|
|
|
#include <linux/bitops.h>
|
|
#define TWI_CR_START BIT(0) /* Send a Start Condition */
|
|
#define TWI_CR_MSEN BIT(2) /* Master Transfer Enable */
|
|
#define TWI_CR_STOP BIT(1) /* Send a Stop Condition */
|
|
#define TWI_CR_SVDIS BIT(5) /* Slave Transfer Disable */
|
|
#define TWI_CR_SWRST BIT(7) /* Software Reset */
|
|
#define TWI_CR_ACMEN BIT(16) /* Alternative Command Mode Enable */
|
|
#define TWI_CR_ACMDIS BIT(17) /* Alternative Command Mode Disable */
|
|
#define TWI_CR_LOCKCLR BIT(26) /* Lock Clear */
|
|
|
|
#define TWI_MMR_MREAD BIT(12) /* Master Read Direction */
|
|
#define TWI_MMR_IADRSZ_1 BIT(8) /* Internal Device Address Size */
|
|
|
|
#define TWI_SR_TXCOMP BIT(0) /* Transmission Complete */
|
|
#define TWI_SR_RXRDY BIT(1) /* Receive Holding Register Ready */
|
|
#define TWI_SR_TXRDY BIT(2) /* Transmit Holding Register Ready */
|
|
#define TWI_SR_OVRE BIT(6) /* Overrun Error */
|
|
#define TWI_SR_UNRE BIT(7) /* Underrun Error */
|
|
#define TWI_SR_NACK BIT(8) /* Not Acknowledged */
|
|
#define TWI_SR_LOCK BIT(23) /* TWI Lock due to Frame Errors */
|
|
|
|
#define TWI_ACR_DATAL(len) ((len) & 0xff)
|
|
#define TWI_ACR_DIR_READ BIT(8)
|
|
|
|
#define TWI_CWGR_HOLD_MAX 0x1f
|
|
#define TWI_CWGR_HOLD(x) (((x) & TWI_CWGR_HOLD_MAX) << 24)
|
|
|
|
struct at91_i2c_regs {
|
|
u32 cr;
|
|
u32 mmr;
|
|
u32 smr;
|
|
u32 iadr;
|
|
u32 cwgr;
|
|
u32 rev_0[3];
|
|
u32 sr;
|
|
u32 ier;
|
|
u32 idr;
|
|
u32 imr;
|
|
u32 rhr;
|
|
u32 thr;
|
|
u32 smbtr;
|
|
u32 rev_1;
|
|
u32 acr;
|
|
u32 filtr;
|
|
u32 rev_2;
|
|
u32 swmr;
|
|
u32 fmr;
|
|
u32 flr;
|
|
u32 rev_3;
|
|
u32 fsr;
|
|
u32 fier;
|
|
u32 fidr;
|
|
u32 fimr;
|
|
u32 rev_4[29];
|
|
u32 wpmr;
|
|
u32 wpsr;
|
|
u32 rev_5[6];
|
|
};
|
|
|
|
struct at91_i2c_pdata {
|
|
unsigned clk_max_div;
|
|
unsigned clk_offset;
|
|
};
|
|
|
|
struct at91_i2c_bus {
|
|
struct at91_i2c_regs *regs;
|
|
u32 status;
|
|
ulong bus_clk_rate;
|
|
u32 clock_frequency;
|
|
u32 speed;
|
|
u32 cwgr_val;
|
|
const struct at91_i2c_pdata *pdata;
|
|
};
|
|
|
|
#endif
|