diff options
| -rw-r--r-- | drivers/firmware/arm_scpi.c | 30 | ||||
| -rw-r--r-- | include/linux/scpi_protocol.h | 2 |
2 files changed, 32 insertions, 0 deletions
diff --git a/drivers/firmware/arm_scpi.c b/drivers/firmware/arm_scpi.c index 51c6db0774cc..438893762076 100644 --- a/drivers/firmware/arm_scpi.c +++ b/drivers/firmware/arm_scpi.c @@ -231,6 +231,11 @@ struct sensor_value { __le32 hi_val; } __packed; +struct dev_pstate_set { + u16 dev_id; + u8 pstate; +} __packed; + static struct scpi_drvinfo *scpi_info; static int scpi_linux_errmap[SCPI_ERR_MAX] = { @@ -537,6 +542,29 @@ static int scpi_sensor_get_value(u16 sensor, u64 *val) return ret; } +static int scpi_device_get_power_state(u16 dev_id) +{ + int ret; + u8 pstate; + __le16 id = cpu_to_le16(dev_id); + + ret = scpi_send_message(SCPI_CMD_GET_DEVICE_PWR_STATE, &id, + sizeof(id), &pstate, sizeof(pstate)); + return ret ? ret : pstate; +} + +static int scpi_device_set_power_state(u16 dev_id, u8 pstate) +{ + int stat; + struct dev_pstate_set dev_set = { + .dev_id = cpu_to_le16(dev_id), + .pstate = pstate, + }; + + return scpi_send_message(SCPI_CMD_SET_DEVICE_PWR_STATE, &dev_set, + sizeof(dev_set), &stat, sizeof(stat)); +} + static struct scpi_ops scpi_ops = { .get_version = scpi_get_version, .clk_get_range = scpi_clk_get_range, @@ -548,6 +576,8 @@ static struct scpi_ops scpi_ops = { .sensor_get_capability = scpi_sensor_get_capability, .sensor_get_info = scpi_sensor_get_info, .sensor_get_value = scpi_sensor_get_value, + .device_get_power_state = scpi_device_get_power_state, + .device_set_power_state = scpi_device_set_power_state, }; struct scpi_ops *get_scpi_ops(void) diff --git a/include/linux/scpi_protocol.h b/include/linux/scpi_protocol.h index 35de50a65665..dc5f989be226 100644 --- a/include/linux/scpi_protocol.h +++ b/include/linux/scpi_protocol.h @@ -70,6 +70,8 @@ struct scpi_ops { int (*sensor_get_capability)(u16 *sensors); int (*sensor_get_info)(u16 sensor_id, struct scpi_sensor_info *); int (*sensor_get_value)(u16, u64 *); + int (*device_get_power_state)(u16); + int (*device_set_power_state)(u16, u8); }; #if IS_REACHABLE(CONFIG_ARM_SCPI_PROTOCOL) |