[PATCH v3 22/30] mfd: cros_ec: Add Smart Battery Firmware update API

Gwendal Grignou
2019-05-09T21:14:40Z

Add API to update battery firmware.

Acked-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Benson Leung <bleung@chromium.org>
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
---
include/linux/mfd/cros_ec_commands.h | 73 ++++++++++++++++++++++++++++
1 file changed, 73 insertions(+)

diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/mfd/cros_ec_commands.h
index 7f98c6e63ad1..49ea905cfd18 100644
--- a/include/linux/mfd/cros_ec_commands.h
+++ b/include/linux/mfd/cros_ec_commands.h
@@ -4243,6 +4243,79 @@ struct ec_response_battery_vendor_param {
uint32_t value;
} __ec_align4;

+/*****************************************************************************/
+/*
+ * Smart Battery Firmware Update Commands
+ */
+#define EC_CMD_SB_FW_UPDATE 0x00B5
+
+enum ec_sb_fw_update_subcmd {
+ EC_SB_FW_UPDATE_PREPARE = 0x0,
+ EC_SB_FW_UPDATE_INFO = 0x1, /*query sb info */
+ EC_SB_FW_UPDATE_BEGIN = 0x2, /*check if protected */
+ EC_SB_FW_UPDATE_WRITE = 0x3, /*check if protected */
+ EC_SB_FW_UPDATE_END = 0x4,
+ EC_SB_FW_UPDATE_STATUS = 0x5,
+ EC_SB_FW_UPDATE_PROTECT = 0x6,
+ EC_SB_FW_UPDATE_MAX = 0x7,
+};
+
+#define SB_FW_UPDATE_CMD_WRITE_BLOCK_SIZE 32
+#define SB_FW_UPDATE_CMD_STATUS_SIZE 2
+#define SB_FW_UPDATE_CMD_INFO_SIZE 8
+
+struct ec_sb_fw_update_header {
+ uint16_t subcmd; /* enum ec_sb_fw_update_subcmd */
+ uint16_t fw_id; /* firmware id */
+} __ec_align4;
+
+struct ec_params_sb_fw_update {
+ struct ec_sb_fw_update_header hdr;
+ union {
+ /* EC_SB_FW_UPDATE_PREPARE = 0x0 */
+ /* EC_SB_FW_UPDATE_INFO = 0x1 */
+ /* EC_SB_FW_UPDATE_BEGIN = 0x2 */
+ /* EC_SB_FW_UPDATE_END = 0x4 */
+ /* EC_SB_FW_UPDATE_STATUS = 0x5 */
+ /* EC_SB_FW_UPDATE_PROTECT = 0x6 */
+ /* Those have no args */
+
+ /* EC_SB_FW_UPDATE_WRITE = 0x3 */
+ struct __ec_align4 {
+ uint8_t data[SB_FW_UPDATE_CMD_WRITE_BLOCK_SIZE];
+ } write;
+ };
+} __ec_align4;
+
+struct ec_response_sb_fw_update {
+ union {
+ /* EC_SB_FW_UPDATE_INFO = 0x1 */
+ struct __ec_align1 {
+ uint8_t data[SB_FW_UPDATE_CMD_INFO_SIZE];
+ } info;
+
+ /* EC_SB_FW_UPDATE_STATUS = 0x5 */
+ struct __ec_align1 {
+ uint8_t data[SB_FW_UPDATE_CMD_STATUS_SIZE];
+ } status;
+ };
+} __ec_align1;
+
+/*
+ * Entering Verified Boot Mode Command
+ * Default mode is VBOOT_MODE_NORMAL if EC did not receive this command.
+ * Valid Modes are: normal, developer, and recovery.
+ */
+#define EC_CMD_ENTERING_MODE 0x00B6
+
+struct ec_params_entering_mode {
+ int vboot_mode;
+} __ec_align4;
+
+#define VBOOT_MODE_NORMAL 0
+#define VBOOT_MODE_DEVELOPER 1
+#define VBOOT_MODE_RECOVERY 2
+
/*****************************************************************************/
/*
* HDMI CEC commands
--
2.21.0.1020.gf2820cf01a-goog