drm/amd/powerplay: add display configeration changed function in hwmgr for Fiji.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Eric Huang <JinHuiEric.Huang@amd.com>

drivers/gpu/drm/amd/powerplay/hwmgr/fiji_hwmgr.c

@@ -3434,6 +3434,10 @@ static int fiji_enable_dpm_tasks(struct pp_hwmgr *hwmgr)
 	PP_ASSERT_WITH_CODE((0 == tmp_result),
 			"Failed to enable VR hot GPIO interrupt!", result = tmp_result);
 
+	tmp_result = tonga_notify_smc_display_change(hwmgr, false);
+	PP_ASSERT_WITH_CODE((0 == tmp_result),
+			"Failed to notify no display!", result = tmp_result);
+
 	tmp_result = fiji_enable_sclk_control(hwmgr);
 	PP_ASSERT_WITH_CODE((0 == tmp_result),
 			"Failed to enable SCLK control!", result = tmp_result);
@@ -4852,6 +4856,65 @@ static void fiji_print_current_perforce_level(
 			mclk / 100, sclk / 100);
 }
 
+static int fiji_program_display_gap(struct pp_hwmgr *hwmgr)
+{
+	struct fiji_hwmgr *data = (struct fiji_hwmgr *)(hwmgr->backend);
+	uint32_t num_active_displays = 0;
+	uint32_t display_gap = cgs_read_ind_register(hwmgr->device,
+			CGS_IND_REG__SMC, ixCG_DISPLAY_GAP_CNTL);
+	uint32_t display_gap2;
+	uint32_t pre_vbi_time_in_us;
+	uint32_t frame_time_in_us;
+	uint32_t ref_clock;
+	uint32_t refresh_rate = 0;
+	struct cgs_display_info info = {0};
+	struct cgs_mode_info mode_info;
+
+	info.mode_info = &mode_info;
+
+	cgs_get_active_displays_info(hwmgr->device, &info);
+	num_active_displays = info.display_count;
+
+	display_gap = PHM_SET_FIELD(display_gap, CG_DISPLAY_GAP_CNTL,
+			DISP_GAP, (num_active_displays > 0)?
+			DISPLAY_GAP_VBLANK_OR_WM : DISPLAY_GAP_IGNORE);
+	cgs_write_ind_register(hwmgr->device, CGS_IND_REG__SMC,
+			ixCG_DISPLAY_GAP_CNTL, display_gap);
+
+	ref_clock = mode_info.ref_clock;
+	refresh_rate = mode_info.refresh_rate;
+
+	if (refresh_rate == 0)
+		refresh_rate = 60;
+
+	frame_time_in_us = 1000000 / refresh_rate;
+
+	pre_vbi_time_in_us = frame_time_in_us - 200 - mode_info.vblank_time_us;
+	display_gap2 = pre_vbi_time_in_us * (ref_clock / 100);
+
+	cgs_write_ind_register(hwmgr->device, CGS_IND_REG__SMC,
+			ixCG_DISPLAY_GAP_CNTL2, display_gap2);
+
+	cgs_write_ind_register(hwmgr->device, CGS_IND_REG__SMC,
+			data->soft_regs_start +
+			offsetof(SMU73_SoftRegisters, PreVBlankGap), 0x64);
+
+	cgs_write_ind_register(hwmgr->device, CGS_IND_REG__SMC,
+			data->soft_regs_start +
+			offsetof(SMU73_SoftRegisters, VBlankTimeout),
+			(frame_time_in_us - pre_vbi_time_in_us));
+
+	if (num_active_displays == 1)
+		tonga_notify_smc_display_change(hwmgr, true);
+
+	return 0;
+}
+
+int fiji_display_configuration_changed_task(struct pp_hwmgr *hwmgr)
+{
+	return fiji_program_display_gap(hwmgr);
+}
+
 static const struct pp_hwmgr_func fiji_hwmgr_funcs = {
 	.backend_init = &fiji_hwmgr_backend_init,
 	.backend_fini = &tonga_hwmgr_backend_fini,
@@ -4870,6 +4933,9 @@ static const struct pp_hwmgr_func fiji_hwmgr_funcs = {
 	.powergate_uvd = &fiji_phm_powergate_uvd,
 	.powergate_vce = &fiji_phm_powergate_vce,
 	.disable_clock_power_gating = &fiji_phm_disable_clock_power_gating,
+	.notify_smc_display_config_after_ps_adjustment =
+			&tonga_notify_smc_display_config_after_ps_adjustment,
+	.display_config_changed = &fiji_display_configuration_changed_task,
 };
 
 int fiji_hwmgr_init(struct pp_hwmgr *hwmgr)

drivers/gpu/drm/amd/powerplay/hwmgr/fiji_hwmgr.h

@@ -339,6 +339,8 @@ enum Fiji_I2CLineID {
 extern int tonga_initializa_dynamic_state_adjustment_rule_settings(struct pp_hwmgr *hwmgr);
 extern int tonga_hwmgr_backend_fini(struct pp_hwmgr *hwmgr);
 extern int tonga_get_mc_microcode_version (struct pp_hwmgr *hwmgr);
+extern int tonga_notify_smc_display_config_after_ps_adjustment(struct pp_hwmgr *hwmgr);
+extern int tonga_notify_smc_display_change(struct pp_hwmgr *hwmgr, bool has_display);
 int fiji_update_vce_dpm(struct pp_hwmgr *hwmgr, const void *input);
 int fiji_update_uvd_dpm(struct pp_hwmgr *hwmgr, bool bgate);
 int fiji_update_samu_dpm(struct pp_hwmgr *hwmgr, bool bgate);