diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-keywest.h')
-rw-r--r-- | drivers/i2c/busses/i2c-keywest.h | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/drivers/i2c/busses/i2c-keywest.h b/drivers/i2c/busses/i2c-keywest.h deleted file mode 100644 index c5022e1ca6f..00000000000 --- a/drivers/i2c/busses/i2c-keywest.h +++ /dev/null @@ -1,108 +0,0 @@ -#ifndef __I2C_KEYWEST_H__ -#define __I2C_KEYWEST_H__ - -/* The Tumbler audio equalizer can be really slow sometimes */ -#define POLL_TIMEOUT (2*HZ) - -/* Register indices */ -typedef enum { - reg_mode = 0, - reg_control, - reg_status, - reg_isr, - reg_ier, - reg_addr, - reg_subaddr, - reg_data -} reg_t; - - -/* Mode register */ -#define KW_I2C_MODE_100KHZ 0x00 -#define KW_I2C_MODE_50KHZ 0x01 -#define KW_I2C_MODE_25KHZ 0x02 -#define KW_I2C_MODE_DUMB 0x00 -#define KW_I2C_MODE_STANDARD 0x04 -#define KW_I2C_MODE_STANDARDSUB 0x08 -#define KW_I2C_MODE_COMBINED 0x0C -#define KW_I2C_MODE_MODE_MASK 0x0C -#define KW_I2C_MODE_CHAN_MASK 0xF0 - -/* Control register */ -#define KW_I2C_CTL_AAK 0x01 -#define KW_I2C_CTL_XADDR 0x02 -#define KW_I2C_CTL_STOP 0x04 -#define KW_I2C_CTL_START 0x08 - -/* Status register */ -#define KW_I2C_STAT_BUSY 0x01 -#define KW_I2C_STAT_LAST_AAK 0x02 -#define KW_I2C_STAT_LAST_RW 0x04 -#define KW_I2C_STAT_SDA 0x08 -#define KW_I2C_STAT_SCL 0x10 - -/* IER & ISR registers */ -#define KW_I2C_IRQ_DATA 0x01 -#define KW_I2C_IRQ_ADDR 0x02 -#define KW_I2C_IRQ_STOP 0x04 -#define KW_I2C_IRQ_START 0x08 -#define KW_I2C_IRQ_MASK 0x0F - -/* Physical interface */ -struct keywest_iface -{ - struct device_node *node; - void __iomem * base; - unsigned bsteps; - int irq; - spinlock_t lock; - struct keywest_chan *channels; - unsigned chan_count; - u8 cur_mode; - char read_write; - u8 *data; - unsigned datalen; - int state; - int result; - struct timer_list timeout_timer; - struct completion complete; -}; - -enum { - state_idle, - state_addr, - state_read, - state_write, - state_stop, - state_dead -}; - -/* Channel on an interface */ -struct keywest_chan -{ - struct i2c_adapter adapter; - struct keywest_iface* iface; - unsigned chan_no; -}; - -/* Register access */ - -static inline u8 __read_reg(struct keywest_iface *iface, reg_t reg) -{ - return in_8(iface->base - + (((unsigned)reg) << iface->bsteps)); -} - -static inline void __write_reg(struct keywest_iface *iface, reg_t reg, u8 val) -{ - out_8(iface->base - + (((unsigned)reg) << iface->bsteps), val); - (void)__read_reg(iface, reg_subaddr); -} - -#define write_reg(reg, val) __write_reg(iface, reg, val) -#define read_reg(reg) __read_reg(iface, reg) - - - -#endif /* __I2C_KEYWEST_H__ */ |