root/include/linux/i2c/dm355evm_msp.h

/*
 * dm355evm_msp.h - support MSP430 microcontroller on DM355EVM board
 */
#ifndef __LINUX_I2C_DM355EVM_MSP
#define __LINUX_I2C_DM355EVM_MSP

/*
 * Written against Spectrum's writeup for the A4 firmware revision,
 * and tweaked to match source and rev D2 schematics by removing CPLD
 * and NOR flash hooks (which were last appropriate in rev B boards).
 *
 * Note that the firmware supports a flavor of write posting ... to be
 * sure a write completes, issue another read or write.
 */

/* utilities to access "registers" emulated by msp430 firmware */
extern int dm355evm_msp_write(u8 value, u8 reg);
extern int dm355evm_msp_read(u8 reg);


/* command/control registers */
#define DM355EVM_MSP_COMMAND            0x00
#       define MSP_COMMAND_NULL         0
#       define MSP_COMMAND_RESET_COLD   1
#       define MSP_COMMAND_RESET_WARM   2
#       define MSP_COMMAND_RESET_WARM_I 3
#       define MSP_COMMAND_POWEROFF     4
#       define MSP_COMMAND_IR_REINIT    5
#define DM355EVM_MSP_STATUS             0x01
#       define MSP_STATUS_BAD_OFFSET    BIT(0)
#       define MSP_STATUS_BAD_COMMAND   BIT(1)
#       define MSP_STATUS_POWER_ERROR   BIT(2)
#       define MSP_STATUS_RXBUF_OVERRUN BIT(3)
#define DM355EVM_MSP_RESET              0x02    /* 0 bits == in reset */
#       define MSP_RESET_DC5            BIT(0)
#       define MSP_RESET_TVP5154        BIT(2)
#       define MSP_RESET_IMAGER         BIT(3)
#       define MSP_RESET_ETHERNET       BIT(4)
#       define MSP_RESET_SYS            BIT(5)
#       define MSP_RESET_AIC33          BIT(7)

/* GPIO registers ... bit patterns mostly match the source MSP ports */
#define DM355EVM_MSP_LED                0x03    /* active low (MSP P4) */
#define DM355EVM_MSP_SWITCH1            0x04    /* (MSP P5, masked) */
#       define MSP_SWITCH1_SW6_1        BIT(0)
#       define MSP_SWITCH1_SW6_2        BIT(1)
#       define MSP_SWITCH1_SW6_3        BIT(2)
#       define MSP_SWITCH1_SW6_4        BIT(3)
#       define MSP_SWITCH1_J1           BIT(4)  /* NTSC/PAL */
#       define MSP_SWITCH1_MSP_INT      BIT(5)  /* active low */
#define DM355EVM_MSP_SWITCH2            0x05    /* (MSP P6, masked) */
#       define MSP_SWITCH2_SW10         BIT(3)
#       define MSP_SWITCH2_SW11         BIT(4)
#       define MSP_SWITCH2_SW12         BIT(5)
#       define MSP_SWITCH2_SW13         BIT(6)
#       define MSP_SWITCH2_SW14         BIT(7)
#define DM355EVM_MSP_SDMMC              0x06    /* (MSP P2, masked) */
#       define MSP_SDMMC_0_WP           BIT(1)
#       define MSP_SDMMC_0_CD           BIT(2)  /* active low */
#       define MSP_SDMMC_1_WP           BIT(3)
#       define MSP_SDMMC_1_CD           BIT(4)  /* active low */
#define DM355EVM_MSP_FIRMREV            0x07    /* not a GPIO (out of order) */
#define DM355EVM_MSP_VIDEO_IN           0x08    /* (MSP P3, masked) */
#       define MSP_VIDEO_IMAGER         BIT(7)  /* low == tvp5146 */

/* power supply registers are currently omitted */

/* RTC registers */
#define DM355EVM_MSP_RTC_0              0x12    /* LSB */
#define DM355EVM_MSP_RTC_1              0x13
#define DM355EVM_MSP_RTC_2              0x14
#define DM355EVM_MSP_RTC_3              0x15    /* MSB */

/* input event queue registers; code == ((HIGH << 8) | LOW) */
#define DM355EVM_MSP_INPUT_COUNT        0x16    /* decrement by reading LOW */
#define DM355EVM_MSP_INPUT_HIGH         0x17
#define DM355EVM_MSP_INPUT_LOW          0x18

#endif /* __LINUX_I2C_DM355EVM_MSP */