diff options
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/cros_ec.c | 33 |
1 files changed, 17 insertions, 16 deletions
diff --git a/drivers/misc/cros_ec.c b/drivers/misc/cros_ec.c index 1cb879cb51..ff46762dde 100644 --- a/drivers/misc/cros_ec.c +++ b/drivers/misc/cros_ec.c @@ -7,10 +7,11 @@ */ /* - * The Matrix Keyboard Protocol driver handles talking to the keyboard - * controller chip. Mostly this is for keyboard functions, but some other - * things have slipped in, so we provide generic services to talk to the - * KBC. + * This is the interface to the Chrome OS EC. It provides keyboard functions, + * power control and battery management. Quite a few other functions are + * provided to enable the EC software to be updated, talk to the EC's I2C bus + * and store a small amount of data in a memory which persists while the EC + * is not reset. */ #include <common.h> @@ -216,7 +217,7 @@ static int ec_command(struct cros_ec_dev *dev, uint8_t cmd, int cmd_version, int cros_ec_scan_keyboard(struct cros_ec_dev *dev, struct mbkp_keyscan *scan) { - if (ec_command(dev, EC_CMD_CROS_EC_STATE, 0, NULL, 0, scan, + if (ec_command(dev, EC_CMD_MKBP_STATE, 0, NULL, 0, scan, sizeof(scan->data)) < sizeof(scan->data)) return -1; @@ -263,7 +264,7 @@ int cros_ec_read_version(struct cros_ec_dev *dev, int cros_ec_read_build_info(struct cros_ec_dev *dev, char **strp) { if (ec_command_inptr(dev, EC_CMD_GET_BUILD_INFO, 0, NULL, 0, - (uint8_t **)strp, EC_HOST_PARAM_SIZE) < 0) + (uint8_t **)strp, EC_PROTO2_MAX_PARAM_SIZE) < 0) return -1; return 0; @@ -332,7 +333,7 @@ int cros_ec_read_hash(struct cros_ec_dev *dev, debug("%s: No valid hash (status=%d size=%d). Compute one...\n", __func__, hash->status, hash->size); - p.cmd = EC_VBOOT_HASH_RECALC; + p.cmd = EC_VBOOT_HASH_START; p.hash_type = EC_VBOOT_HASH_TYPE_SHA256; p.nonce_size = 0; p.offset = EC_VBOOT_HASH_OFFSET_RW; @@ -414,10 +415,10 @@ int cros_ec_interrupt_pending(struct cros_ec_dev *dev) return !gpio_get_value(dev->ec_int.gpio); } -int cros_ec_info(struct cros_ec_dev *dev, struct ec_response_cros_ec_info *info) +int cros_ec_info(struct cros_ec_dev *dev, struct ec_response_mkbp_info *info) { - if (ec_command(dev, EC_CMD_CROS_EC_INFO, 0, NULL, 0, info, - sizeof(*info)) < sizeof(*info)) + if (ec_command(dev, EC_CMD_MKBP_INFO, 0, NULL, 0, info, + sizeof(*info)) < sizeof(*info)) return -1; return 0; @@ -590,8 +591,8 @@ static int cros_ec_flash_write_block(struct cros_ec_dev *dev, p.offset = offset; p.size = size; - assert(data && p.size <= sizeof(p.data)); - memcpy(p.data, data, p.size); + assert(data && p.size <= EC_FLASH_WRITE_VER0_SIZE); + memcpy(&p + 1, data, p.size); return ec_command_inptr(dev, EC_CMD_FLASH_WRITE, 0, &p, sizeof(p), NULL, 0) >= 0 ? 0 : -1; @@ -602,8 +603,7 @@ static int cros_ec_flash_write_block(struct cros_ec_dev *dev, */ static int cros_ec_flash_write_burst_size(struct cros_ec_dev *dev) { - struct ec_params_flash_write p; - return sizeof(p.data); + return EC_FLASH_WRITE_VER0_SIZE; } /** @@ -804,7 +804,8 @@ int cros_ec_get_ldo(struct cros_ec_dev *dev, uint8_t index, uint8_t *state) } /** - * Decode MBKP details from the device tree and allocate a suitable device. + * Decode EC interface details from the device tree and allocate a suitable + * device. * * @param blob Device tree blob * @param node Node to decode from @@ -1086,7 +1087,7 @@ static int do_cros_ec(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) } printf("%s\n", id); } else if (0 == strcmp("info", cmd)) { - struct ec_response_cros_ec_info info; + struct ec_response_mkbp_info info; if (cros_ec_info(dev, &info)) { debug("%s: Could not read KBC info\n", __func__); |