diff options
| -rw-r--r-- | io-module/mts_io.c | 54 | ||||
| -rw-r--r-- | io-module/mts_io.h | 12 |
2 files changed, 66 insertions, 0 deletions
diff --git a/io-module/mts_io.c b/io-module/mts_io.c index 89e1e0e..8c38119 100644 --- a/io-module/mts_io.c +++ b/io-module/mts_io.c @@ -83,9 +83,17 @@ static int led_mode_status = LED_OFF; #define SOUT_LED_SIG3_BIT BIT(6) #define SOUT_EXTSERIAL_DCD_BIT BIT(7) +/* on-board EEPROM */ extern uint8_t mts_id_eeprom[512]; static struct mts_id_eeprom_layout id_eeprom; +/* daughter card EEPROM */ +extern uint8_t mts_dc_eeprom[512]; +static struct mts_dc_eeprom_layout dc_eeprom; + +bool daughter_card_capable = false; +bool has_daughter_card = false; + static uint8_t mts_product_id; static uint8_t has_spi_sout; static uint8_t has_spi_din; @@ -2863,6 +2871,35 @@ static struct spi_driver mts_spi_board_temp_driver = { .remove = __devexit_p(mts_spi_board_temp_remove), }; +static int mts_dc_eeprom_load(void) +{ + memcpy(&dc_eeprom, mts_dc_eeprom, sizeof(mts_dc_eeprom)); + + if (mts_dc_eeprom[0] == 0xFF) { + log_error("uninitialized eeprom on daughter card"); + return -EIO; + } else if (mts_dc_eeprom[0] == 0x00) { + log_info("no daughter card inserted"); + return 0; + } + + has_daughter_card = true; + + log_info("daughter card serial: %.32s", dc_eeprom.serial); + log_info("daughter card hardware version: %.32s", dc_eeprom.hw_rev); + log_info("daughter card product id: %.32s", dc_eeprom.product_id); + /* TODO: only show the mac address if this is the ethernet card */ + log_info("daughter card mac-addr: %02X:%02X:%02X:%02X:%02X:%02X", + dc_eeprom.mac_addr[0], + dc_eeprom.mac_addr[1], + dc_eeprom.mac_addr[2], + dc_eeprom.mac_addr[3], + dc_eeprom.mac_addr[4], + dc_eeprom.mac_addr[5]); + + return 0; +} + static int mts_id_eeprom_load(void) { memcpy(&id_eeprom, mts_id_eeprom, sizeof(mts_id_eeprom)); @@ -2901,6 +2938,7 @@ static int mts_id_eeprom_load(void) attr_group = &mtr2_platform_attribute_group; gpio_pins = gpio_pins_mtr2_0_0; mts_product_id = MTR2_0_0; + daughter_card_capable = true; has_spi_sout = 0; has_spi_din = 0; has_spi_dout = 0; @@ -2928,6 +2966,7 @@ static int mts_id_eeprom_load(void) attr_group = &mtr2_platform_attribute_group; gpio_pins = gpio_pins_mtr2_0_0; mts_product_id = MTOCGD3_0_0; + daughter_card_capable = true; has_spi_sout = 0; has_spi_din = 0; has_spi_dout = 0; @@ -3011,6 +3050,21 @@ static int __init mts_io_init(void) goto error1; } + if (daughter_card_capable) { + ret = mts_dc_eeprom_load(); + if (ret) { + /* error reading the EEPROM from the daughter card */ + log_error("error reading daughter card eeprom: %d", ret); + log_error("unable to initialize daughter card"); + goto error1; + } else if (! has_daughter_card) { + /* boolean flag wasn't set, no card */ + log_info("no daughter card is inserted"); + } else { + /* TODO: handle daughter card specific configuration here */ + } + } + mts_io_platform_device = platform_device_alloc(PLATFORM_NAME, -1); if (!mts_io_platform_device) { ret = -ENOMEM; diff --git a/io-module/mts_io.h b/io-module/mts_io.h index f2ff2b4..86ab32e 100644 --- a/io-module/mts_io.h +++ b/io-module/mts_io.h @@ -81,6 +81,9 @@ do { \ #define CAPA_BLUETOOTH DEVICE_CAPA_VALUE(1, 7) #define CAPA_WIFI DEVICE_CAPA_VALUE(1, 6) +#define DAUGHTER_CARD_GPIO "MTDC-GPIOB" + +/* on-board EEPROM */ struct mts_id_eeprom_layout { char vendor_id[32]; char product_id[32]; @@ -94,6 +97,15 @@ struct mts_id_eeprom_layout { uint8_t reserved[302]; }; +/* daughter card EEPROM */ +struct mts_dc_eeprom_layout { + char serial[32]; + char hw_rev[32]; + char product_id[32]; + uint8_t mac_addr[6]; + uint8_t reserved[410]; +}; + // GPIO pin types:input, output, open drain (1 = high Z, 0 = output low) enum { GPIO_DIR_INPUT, |