linux-kernel - [PATCH 11/30] mfd: cros_ec: Add PWM_SET

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Message-Id: <20190424232918.243308-12-gwendal@chromium.org>
Date:   Wed, 24 Apr 2019 16:28:59 -0700
From:   Gwendal Grignou <gwendal@...omium.org>
To:     enric.balletbo@...labora.com, bleung@...omium.org,
        groeck@...omium.org, lee.jones@...aro.org
Cc:     linux-kernel@...r.kernel.org,
        Gwendal Grignou <gwendal@...omium.org>
Subject: [PATCH 11/30] mfd: cros_ec: Add PWM_SET_DUTY API

Add API for fan control.

Signed-off-by: Gwendal Grignou <gwendal@...omium.org>
---
 include/linux/mfd/cros_ec_commands.h | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/mfd/cros_ec_commands.h
index 393c5abab7a0..5747bbcfa45f 100644
--- a/include/linux/mfd/cros_ec_commands.h
+++ b/include/linux/mfd/cros_ec_commands.h
@@ -1491,11 +1491,19 @@ struct ec_response_pwm_get_fan_rpm {
 /* Set target fan RPM */
 #define EC_CMD_PWM_SET_FAN_TARGET_RPM 0x0021
 
-struct ec_params_pwm_set_fan_target_rpm {
+/* Version 0 of input params */
+struct ec_params_pwm_set_fan_target_rpm_v0 {
 	uint32_t rpm;
+} __ec_align4;
+
+/* Version 1 of input params */
+struct ec_params_pwm_set_fan_target_rpm_v1 {
+	uint32_t rpm;
+	uint8_t fan_idx;
 } __ec_align_size1;
 
 /* Get keyboard backlight */
+/* OBSOLETE - Use EC_CMD_PWM_SET_DUTY */
 #define EC_CMD_PWM_GET_KEYBOARD_BACKLIGHT 0x0022
 
 struct ec_response_pwm_get_keyboard_backlight {
@@ -1504,6 +1512,7 @@ struct ec_response_pwm_get_keyboard_backlight {
 } __ec_align1;
 
 /* Set keyboard backlight */
+/* OBSOLETE - Use EC_CMD_PWM_SET_DUTY */
 #define EC_CMD_PWM_SET_KEYBOARD_BACKLIGHT 0x0023
 
 struct ec_params_pwm_set_keyboard_backlight {
@@ -1513,10 +1522,17 @@ struct ec_params_pwm_set_keyboard_backlight {
 /* Set target fan PWM duty cycle */
 #define EC_CMD_PWM_SET_FAN_DUTY 0x0024
 
-struct ec_params_pwm_set_fan_duty {
+/* Version 0 of input params */
+struct ec_params_pwm_set_fan_duty_v0 {
 	uint32_t percent;
 } __ec_align4;
 
+/* Version 1 of input params */
+struct ec_params_pwm_set_fan_duty_v1 {
+	uint32_t percent;
+	uint8_t fan_idx;
+} __ec_align_size1;
+
 #define EC_CMD_PWM_SET_DUTY 0x0025
 /* 16 bit duty cycle, 0xffff = 100% */
 #define EC_PWM_MAX_DUTY 0xffff
-- 
2.21.0.593.g511ec345e18-goog