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Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.19.8/0464-drm-amdgpu-Disable-sysfs-pwm1-if-not-in-manual-fan-c.patch')
-rw-r--r--common/recipes-kernel/linux/linux-yocto-4.19.8/0464-drm-amdgpu-Disable-sysfs-pwm1-if-not-in-manual-fan-c.patch43
1 files changed, 43 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.19.8/0464-drm-amdgpu-Disable-sysfs-pwm1-if-not-in-manual-fan-c.patch b/common/recipes-kernel/linux/linux-yocto-4.19.8/0464-drm-amdgpu-Disable-sysfs-pwm1-if-not-in-manual-fan-c.patch
new file mode 100644
index 00000000..71f7e2d8
--- /dev/null
+++ b/common/recipes-kernel/linux/linux-yocto-4.19.8/0464-drm-amdgpu-Disable-sysfs-pwm1-if-not-in-manual-fan-c.patch
@@ -0,0 +1,43 @@
+From 8ee8fa0d4bdfbaab8b40816586a6f66aa64a9782 Mon Sep 17 00:00:00 2001
+From: Rex Zhu <Rex.Zhu@amd.com>
+Date: Fri, 28 Sep 2018 16:01:48 +0800
+Subject: [PATCH 0464/2940] drm/amdgpu: Disable sysfs pwm1 if not in manual fan
+ control
+
+Following lm-sensors 3.0.0,
+Only enable pwm1 sysfs when fan control mode(pwm1_enable)
+in manual
+
+Reviewed-by: Evan Quan <evan.quan@amd.com>
+Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
+---
+ drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
+index a9f68753ec7f..68548fbdee09 100644
+--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
++++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
+@@ -1120,12 +1120,19 @@ static ssize_t amdgpu_hwmon_set_pwm1(struct device *dev,
+ struct amdgpu_device *adev = dev_get_drvdata(dev);
+ int err;
+ u32 value;
++ u32 pwm_mode;
+
+ /* Can't adjust fan when the card is off */
+ if ((adev->flags & AMD_IS_PX) &&
+ (adev->ddev->switch_power_state != DRM_SWITCH_POWER_ON))
+ return -EINVAL;
+
++ pwm_mode = amdgpu_dpm_get_fan_control_mode(adev);
++ if (pwm_mode != AMD_FAN_CTRL_MANUAL) {
++ pr_info("manual fan speed control should be enabled first\n");
++ return -EINVAL;
++ }
++
+ err = kstrtou32(buf, 10, &value);
+ if (err)
+ return err;
+--
+2.17.1
+