For the Smart PC Solution to fully work, it has to enact to the actions coming from TA. Add the initial code path for set interface to AMDGPU.
Change amd_pmf_apply_policies() return type, so that it can return errors when the call to retrieve information from amdgpu fails. Co-developed-by: Mario Limonciello <mario.limoncie...@amd.com> Signed-off-by: Mario Limonciello <mario.limoncie...@amd.com> Signed-off-by: Shyam Sundar S K <shyam-sundar....@amd.com> --- drivers/gpu/drm/amd/amdgpu/amdgpu_pmf.c | 18 ++++++++++++++++++ drivers/platform/x86/amd/pmf/pmf.h | 2 ++ drivers/platform/x86/amd/pmf/tee-if.c | 21 +++++++++++++++++++-- 3 files changed, 39 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pmf.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pmf.c index ac981848df50..57acfc32219a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pmf.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pmf.c @@ -63,6 +63,23 @@ int amd_pmf_get_gfx_data(struct amd_gpu_pmf_data *pmf) } EXPORT_SYMBOL_GPL(amd_pmf_get_gfx_data); +static int amd_pmf_gpu_set_cur_state(struct thermal_cooling_device *cooling_dev, + unsigned long state) +{ + struct backlight_device *bd; + + if (!acpi_video_backlight_use_native()) + return -ENODEV; + + bd = backlight_device_get_by_type(BACKLIGHT_RAW); + if (!bd) + return -ENODEV; + + backlight_device_set_brightness(bd, state); + + return 0; +} + static int amd_pmf_gpu_get_cur_state(struct thermal_cooling_device *cooling_dev, unsigned long *state) { @@ -103,6 +120,7 @@ static int amd_pmf_gpu_get_max_state(struct thermal_cooling_device *cooling_dev, static const struct thermal_cooling_device_ops bd_cooling_ops = { .get_max_state = amd_pmf_gpu_get_max_state, .get_cur_state = amd_pmf_gpu_get_cur_state, + .set_cur_state = amd_pmf_gpu_set_cur_state, }; int amd_pmf_gpu_init(struct amd_gpu_pmf_data *pmf) diff --git a/drivers/platform/x86/amd/pmf/pmf.h b/drivers/platform/x86/amd/pmf/pmf.h index 615cd3a31986..641af94ba378 100644 --- a/drivers/platform/x86/amd/pmf/pmf.h +++ b/drivers/platform/x86/amd/pmf/pmf.h @@ -75,6 +75,7 @@ #define PMF_POLICY_STT_SKINTEMP_APU 7 #define PMF_POLICY_STT_SKINTEMP_HS2 8 #define PMF_POLICY_SYSTEM_STATE 9 +#define PMF_POLICY_DISPLAY_BRIGHTNESS 12 #define PMF_POLICY_P3T 38 /* TA macros */ @@ -488,6 +489,7 @@ enum ta_pmf_error_type { }; struct pmf_action_table { + unsigned long display_brightness; enum system_state system_state; u32 spl; /* in mW */ u32 sppt; /* in mW */ diff --git a/drivers/platform/x86/amd/pmf/tee-if.c b/drivers/platform/x86/amd/pmf/tee-if.c index 956e66b78605..b39f30a4f92d 100644 --- a/drivers/platform/x86/amd/pmf/tee-if.c +++ b/drivers/platform/x86/amd/pmf/tee-if.c @@ -77,8 +77,10 @@ static int amd_pmf_update_uevents(struct amd_pmf_dev *dev, u16 event) return 0; } -static void amd_pmf_apply_policies(struct amd_pmf_dev *dev, struct ta_pmf_enact_result *out) +static int amd_pmf_apply_policies(struct amd_pmf_dev *dev, struct ta_pmf_enact_result *out) { + struct thermal_cooling_device *cdev = dev->gfx_data.cooling_dev; + unsigned long state; u32 val; int idx; @@ -154,8 +156,21 @@ static void amd_pmf_apply_policies(struct amd_pmf_dev *dev, struct ta_pmf_enact_ dev_dbg(dev->dev, "update SYSTEM_STATE : %s\n", amd_pmf_uevent_as_str(val)); break; + + case PMF_POLICY_DISPLAY_BRIGHTNESS: + if (!dev->gfx_data.gpu_dev_en) + return -ENODEV; + + cdev->ops->get_cur_state(cdev, &state); + if (state != val) { + cdev->ops->set_cur_state(cdev, val); + dev_dbg(dev->dev, "update DISPLAY_BRIGHTNESS : %u\n", val); + } + break; } } + + return 0; } static int amd_pmf_invoke_cmd_enact(struct amd_pmf_dev *dev) @@ -192,7 +207,9 @@ static int amd_pmf_invoke_cmd_enact(struct amd_pmf_dev *dev) amd_pmf_dump_ta_inputs(dev, in); dev_dbg(dev->dev, "action count:%u result:%x\n", out->actions_count, ta_sm->pmf_result); - amd_pmf_apply_policies(dev, out); + ret = amd_pmf_apply_policies(dev, out); + if (ret) + return ret; } return 0; -- 2.25.1