From: Rex Zhu <Rex.Zhu@xxxxxxx>
Add new CGS interfaces to query display info across modules.
This is nedded by the powerplay module for synchronizing with
the display module.
v2: (agd): fold in refresh rate fix, rebase
Signed-off-by: Rex Zhu <Rex.Zhu@xxxxxxx>
Reviewed-by: Jammy Zhou <Jammy.Zhou@xxxxxxx>
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c | 40 ++++++++++++++++++++++++++++++++
drivers/gpu/drm/amd/include/cgs_common.h | 20 ++++++++++++++++
2 files changed, 60 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
index 19f46d0..8f758ea 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
@@ -758,6 +758,45 @@ static int amdgpu_cgs_query_system_info(void *cgs_device,
return 0;
}
+static int amdgpu_cgs_get_active_displays_info(void *cgs_device,
+ struct cgs_display_info *info)
+{
+ CGS_FUNC_ADEV;
+ struct amdgpu_crtc *amdgpu_crtc;
+ struct drm_device *ddev = adev->ddev;
+ struct drm_crtc *crtc;
+ uint32_t line_time_us, vblank_lines;
+
+ if (info == NULL)
+ return -EINVAL;
+
+ if (adev->mode_info.num_crtc && adev->mode_info.mode_config_initialized) {
+ list_for_each_entry(crtc,
+ &ddev->mode_config.crtc_list, head) {
+ amdgpu_crtc = to_amdgpu_crtc(crtc);
+ if (crtc->enabled) {
+ info->active_display_mask |= (1 << amdgpu_crtc->crtc_id);
+ info->display_count++;
+ }
+ if (info->mode_info != NULL &&
+ crtc->enabled && amdgpu_crtc->enabled &&
+ amdgpu_crtc->hw_mode.clock) {
+ line_time_us = (amdgpu_crtc->hw_mode.crtc_htotal * 1000) /
+ amdgpu_crtc->hw_mode.clock;
+ vblank_lines = amdgpu_crtc->hw_mode.crtc_vblank_end -
+ amdgpu_crtc->hw_mode.crtc_vdisplay +
+ (amdgpu_crtc->v_border * 2);
+ info->mode_info->vblank_time_us = vblank_lines * line_time_us;
+ info->mode_info->refresh_rate = drm_mode_vrefresh(&amdgpu_crtc->hw_mode);
+ info->mode_info->ref_clock = adev->clock.spll.reference_freq;
+ info->mode_info++;
+ }
+ }
+ }
+
+ return 0;
+}
+
/** \brief evaluate acpi namespace object, handle or pathname must be valid
* \param cgs_device
* \param info input/output arguments for the control method
@@ -1006,6 +1045,7 @@ static const struct cgs_ops amdgpu_cgs_ops = {
amdgpu_cgs_get_firmware_info,
amdgpu_cgs_set_powergating_state,
amdgpu_cgs_set_clockgating_state,
+ amdgpu_cgs_get_active_displays_info,
amdgpu_cgs_call_acpi_method,
amdgpu_cgs_query_system_info,
};
diff --git a/drivers/gpu/drm/amd/include/cgs_common.h b/drivers/gpu/drm/amd/include/cgs_common.h
index 5ea8db0..2bbffd1 100644
--- a/drivers/gpu/drm/amd/include/cgs_common.h
+++ b/drivers/gpu/drm/amd/include/cgs_common.h
@@ -142,6 +142,18 @@ struct cgs_firmware_info {
void *kptr;
};
+struct cgs_mode_info {
+ uint32_t refresh_rate;
+ uint32_t ref_clock;
+ uint32_t vblank_time_us;
+};
+
+struct cgs_display_info {
+ uint32_t display_count;
+ uint32_t active_display_mask;
+ struct cgs_mode_info *mode_info;
+};
+
typedef unsigned long cgs_handle_t;
#define CGS_ACPI_METHOD_ATCS 0x53435441
@@ -541,6 +553,10 @@ typedef int(*cgs_set_clockgating_state)(void *cgs_device,
enum amd_ip_block_type block_type,
enum amd_clockgating_state state);
+typedef int(*cgs_get_active_displays_info)(
+ void *cgs_device,
+ struct cgs_display_info *info);
+
typedef int (*cgs_call_acpi_method)(void *cgs_device,
uint32_t acpi_method,
uint32_t acpi_function,
@@ -592,6 +608,8 @@ struct cgs_ops {
/* cg pg interface*/
cgs_set_powergating_state set_powergating_state;
cgs_set_clockgating_state set_clockgating_state;
+ /* display manager */
+ cgs_get_active_displays_info get_active_displays_info;
/* ACPI */
cgs_call_acpi_method call_acpi_method;
/* get system info */
@@ -682,6 +700,8 @@ struct cgs_device
CGS_CALL(set_powergating_state, dev, block_type, state)
#define cgs_set_clockgating_state(dev, block_type, state) \
CGS_CALL(set_clockgating_state, dev, block_type, state)
+#define cgs_get_active_displays_info(dev, info) \
+ CGS_CALL(get_active_displays_info, dev, info)
#define cgs_call_acpi_method(dev, acpi_method, acpi_function, pintput, poutput, output_count, input_size, output_size) \
CGS_CALL(call_acpi_method, dev, acpi_method, acpi_function, pintput, poutput, output_count, input_size, output_size)
#define cgs_query_system_info(dev, sys_info) \
--
1.8.3.1
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