include/linux/i2c/dm355evm_msp.h

   1 /*
   2  * dm355evm_msp.h - support MSP430 microcontroller on DM355EVM board
   3  */
   4 #ifndef __LINUX_I2C_DM355EVM_MSP
   5 #define __LINUX_I2C_DM355EVM_MSP
   6
   7 /*
   8  * Written against Spectrum's writeup for the A4 firmware revision,
   9  * and tweaked to match source and rev D2 schematics by removing CPLD
  10  * and NOR flash hooks (which were last appropriate in rev B boards).
  11  *
  12  * Note that the firmware supports a flavor of write posting ... to be
  13  * sure a write completes, issue another read or write.
  14  */
  15
  16 /* utilities to access "registers" emulated by msp430 firmware */
  17 extern int dm355evm_msp_write(u8 value, u8 reg);
  18 extern int dm355evm_msp_read(u8 reg);
  19
  20
  21 /* command/control registers */
  22 #define DM355EVM_MSP_COMMAND            0x00
  23 #       define MSP_COMMAND_NULL         0
  24 #       define MSP_COMMAND_RESET_COLD   1
  25 #       define MSP_COMMAND_RESET_WARM   2
  26 #       define MSP_COMMAND_RESET_WARM_I 3
  27 #       define MSP_COMMAND_POWEROFF     4
  28 #       define MSP_COMMAND_IR_REINIT    5
  29 #define DM355EVM_MSP_STATUS             0x01
  30 #       define MSP_STATUS_BAD_OFFSET    BIT(0)
  31 #       define MSP_STATUS_BAD_COMMAND   BIT(1)
  32 #       define MSP_STATUS_POWER_ERROR   BIT(2)
  33 #       define MSP_STATUS_RXBUF_OVERRUN BIT(3)
  34 #define DM355EVM_MSP_RESET              0x02    /* 0 bits == in reset */
  35 #       define MSP_RESET_DC5            BIT(0)
  36 #       define MSP_RESET_TVP5154        BIT(2)
  37 #       define MSP_RESET_IMAGER         BIT(3)
  38 #       define MSP_RESET_ETHERNET       BIT(4)
  39 #       define MSP_RESET_SYS            BIT(5)
  40 #       define MSP_RESET_AIC33          BIT(7)
  41
  42 /* GPIO registers ... bit patterns mostly match the source MSP ports */
  43 #define DM355EVM_MSP_LED                0x03    /* active low (MSP P4) */
  44 #define DM355EVM_MSP_SWITCH1            0x04    /* (MSP P5, masked) */
  45 #       define MSP_SWITCH1_SW6_1        BIT(0)
  46 #       define MSP_SWITCH1_SW6_2        BIT(1)
  47 #       define MSP_SWITCH1_SW6_3        BIT(2)
  48 #       define MSP_SWITCH1_SW6_4        BIT(3)
  49 #       define MSP_SWITCH1_J1           BIT(4)  /* NTSC/PAL */
  50 #       define MSP_SWITCH1_MSP_INT      BIT(5)  /* active low */
  51 #define DM355EVM_MSP_SWITCH2            0x05    /* (MSP P6, masked) */
  52 #       define MSP_SWITCH2_SW10         BIT(3)
  53 #       define MSP_SWITCH2_SW11         BIT(4)
  54 #       define MSP_SWITCH2_SW12         BIT(5)
  55 #       define MSP_SWITCH2_SW13         BIT(6)
  56 #       define MSP_SWITCH2_SW14         BIT(7)
  57 #define DM355EVM_MSP_SDMMC              0x06    /* (MSP P2, masked) */
  58 #       define MSP_SDMMC_0_WP           BIT(1)
  59 #       define MSP_SDMMC_0_CD           BIT(2)  /* active low */
  60 #       define MSP_SDMMC_1_WP           BIT(3)
  61 #       define MSP_SDMMC_1_CD           BIT(4)  /* active low */
  62 #define DM355EVM_MSP_FIRMREV            0x07    /* not a GPIO (out of order) */
  63 #define DM355EVM_MSP_VIDEO_IN           0x08    /* (MSP P3, masked) */
  64 #       define MSP_VIDEO_IMAGER         BIT(7)  /* low == tvp5146 */
  65
  66 /* power supply registers are currently omitted */
  67
  68 /* RTC registers */
  69 #define DM355EVM_MSP_RTC_0              0x12    /* LSB */
  70 #define DM355EVM_MSP_RTC_1              0x13
  71 #define DM355EVM_MSP_RTC_2              0x14
  72 #define DM355EVM_MSP_RTC_3              0x15    /* MSB */
  73
  74 /* input event queue registers; code == ((HIGH << 8) | LOW) */
  75 #define DM355EVM_MSP_INPUT_COUNT        0x16    /* decrement by reading LOW */
  76 #define DM355EVM_MSP_INPUT_HIGH         0x17
  77 #define DM355EVM_MSP_INPUT_LOW          0x18
  78
  79 #endif /* __LINUX_I2C_DM355EVM_MSP */