drm/amdgpu/powerplay: enable LEDs on Fiji boards

This enables the LEDs that light up based on DPM states
on some Fiji boards.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=97590

Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/inc/smu7_ppsmc.h

@@ -377,6 +377,7 @@ typedef uint16_t PPSMC_Result;
 #define PPSMC_MSG_DisableAvfs                 ((uint16_t) 0x26B)
 
 #define PPSMC_MSG_PerformBtc                  ((uint16_t) 0x26C)
+#define PPSMC_MSG_LedConfig                   ((uint16_t) 0x274)
 #define PPSMC_MSG_VftTableIsValid             ((uint16_t) 0x275)
 #define PPSMC_MSG_UseNewGPIOScheme            ((uint16_t) 0x277)
 #define PPSMC_MSG_GetEnabledPsm               ((uint16_t) 0x400)

drivers/gpu/drm/amd/powerplay/smumgr/fiji_smc.c

@@ -1758,6 +1758,36 @@ static int fiji_save_default_power_profile(struct pp_hwmgr *hwmgr)
 
 	return 0;
 }
+
+static int fiji_setup_dpm_led_config(struct pp_hwmgr *hwmgr)
+{
+	pp_atomctrl_voltage_table param_led_dpm;
+	int result = 0;
+	u32 mask = 0;
+
+	result = atomctrl_get_voltage_table_v3(hwmgr,
+					       VOLTAGE_TYPE_LEDDPM, VOLTAGE_OBJ_GPIO_LUT,
+					       &param_led_dpm);
+	if (result == 0) {
+		int i, j;
+		u32 tmp = param_led_dpm.mask_low;
+
+		for (i = 0, j = 0; i < 32; i++) {
+			if (tmp & 1) {
+				mask |= (i << (8 * j));
+				if (++j >= 3)
+					break;
+			}
+			tmp >>= 1;
+		}
+	}
+	if (mask)
+		smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
+						    PPSMC_MSG_LedConfig,
+						    mask);
+	return 0;
+}
+
 /**
 * Initializes the SMC table and uploads it
 *
@@ -1972,6 +2002,10 @@ int fiji_init_smc_table(struct pp_hwmgr *hwmgr)
 	PP_ASSERT_WITH_CODE(0 == result,
 			"Failed to  populate PM fuses to SMC memory!", return result);
 
+	result = fiji_setup_dpm_led_config(hwmgr);
+	PP_ASSERT_WITH_CODE(0 == result,
+			    "Failed to setup dpm led config", return result);
+
 	fiji_save_default_power_profile(hwmgr);
 
 	return 0;