drm/radeon/kms: properly program vddci on evergreen+

Change vddci as well as vddc when changing power modes
on evergreen/ni.  Also, properly set vddci on boot up
for ni cards.  The vbios only sets the limited clocks
and voltages on boot until the mc ucode is loaded.  This
should fix stability problems on some btc cards.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/radeon/evergreen.c

@@ -120,11 +120,16 @@ void evergreen_pm_misc(struct radeon_device *rdev)
 	struct radeon_power_state *ps = &rdev->pm.power_state[req_ps_idx];
 	struct radeon_voltage *voltage = &ps->clock_info[req_cm_idx].voltage;
 
-	if ((voltage->type == VOLTAGE_SW) && voltage->voltage) {
-		if (voltage->voltage != rdev->pm.current_vddc) {
+	if (voltage->type == VOLTAGE_SW) {
+		if (voltage->voltage && (voltage->voltage != rdev->pm.current_vddc)) {
 			radeon_atom_set_voltage(rdev, voltage->voltage, SET_VOLTAGE_TYPE_ASIC_VDDC);
 			rdev->pm.current_vddc = voltage->voltage;
-			DRM_DEBUG("Setting: v: %d\n", voltage->voltage);
+			DRM_DEBUG("Setting: vddc: %d\n", voltage->voltage);
+		}
+		if (voltage->vddci && (voltage->vddci != rdev->pm.current_vddci)) {
+			radeon_atom_set_voltage(rdev, voltage->vddci, SET_VOLTAGE_TYPE_ASIC_VDDCI);
+			rdev->pm.current_vddci = voltage->vddci;
+			DRM_DEBUG("Setting: vddci: %d\n", voltage->vddci);
 		}
 	}
 }

drivers/gpu/drm/radeon/radeon.h

@@ -767,7 +767,9 @@ struct radeon_voltage {
 	u8 vddci_id; /* index into vddci voltage table */
 	bool vddci_enabled;
 	/* r6xx+ sw */
-	u32 voltage;
+	u16 voltage;
+	/* evergreen+ vddci */
+	u16 vddci;
 };
 
 /* clock mode flags */
@@ -835,10 +837,12 @@ struct radeon_pm {
 	int                     default_power_state_index;
 	u32                     current_sclk;
 	u32                     current_mclk;
-	u32                     current_vddc;
+	u16                     current_vddc;
+	u16                     current_vddci;
 	u32                     default_sclk;
 	u32                     default_mclk;
-	u32                     default_vddc;
+	u16                     default_vddc;
+	u16                     default_vddci;
 	struct radeon_i2c_chan *i2c_bus;
 	/* selected pm method */
 	enum radeon_pm_method     pm_method;

drivers/gpu/drm/radeon/radeon_atombios.c

@@ -2176,24 +2176,27 @@ static void radeon_atombios_add_pplib_thermal_controller(struct radeon_device *r
 	}
 }
 
-static u16 radeon_atombios_get_default_vddc(struct radeon_device *rdev)
+static void radeon_atombios_get_default_voltages(struct radeon_device *rdev,
+						 u16 *vddc, u16 *vddci)
 {
 	struct radeon_mode_info *mode_info = &rdev->mode_info;
 	int index = GetIndexIntoMasterTable(DATA, FirmwareInfo);
 	u8 frev, crev;
 	u16 data_offset;
 	union firmware_info *firmware_info;
-	u16 vddc = 0;
+
+	*vddc = 0;
+	*vddci = 0;
 
 	if (atom_parse_data_header(mode_info->atom_context, index, NULL,
 				   &frev, &crev, &data_offset)) {
 		firmware_info =
 			(union firmware_info *)(mode_info->atom_context->bios +
 						data_offset);
-		vddc = le16_to_cpu(firmware_info->info_14.usBootUpVDDCVoltage);
+		*vddc = le16_to_cpu(firmware_info->info_14.usBootUpVDDCVoltage);
+		if ((frev == 2) && (crev >= 2))
+			*vddci = le16_to_cpu(firmware_info->info_22.usBootUpVDDCIVoltage);
 	}
-
-	return vddc;
 }
 
 static void radeon_atombios_parse_pplib_non_clock_info(struct radeon_device *rdev,
@@ -2203,7 +2206,9 @@ static void radeon_atombios_parse_pplib_non_clock_info(struct radeon_device *rde
 	int j;
 	u32 misc = le32_to_cpu(non_clock_info->ulCapsAndSettings);
 	u32 misc2 = le16_to_cpu(non_clock_info->usClassification);
-	u16 vddc = radeon_atombios_get_default_vddc(rdev);
+	u16 vddc, vddci;
+
+	radeon_atombios_get_default_voltages(rdev, &vddc, &vddci);
 
 	rdev->pm.power_state[state_index].misc = misc;
 	rdev->pm.power_state[state_index].misc2 = misc2;
@@ -2244,6 +2249,7 @@ static void radeon_atombios_parse_pplib_non_clock_info(struct radeon_device *rde
 			rdev->pm.default_sclk = rdev->pm.power_state[state_index].clock_info[0].sclk;
 			rdev->pm.default_mclk = rdev->pm.power_state[state_index].clock_info[0].mclk;
 			rdev->pm.default_vddc = rdev->pm.power_state[state_index].clock_info[0].voltage.voltage;
+			rdev->pm.default_vddci = rdev->pm.power_state[state_index].clock_info[0].voltage.vddci;
 		} else {
 			/* patch the table values with the default slck/mclk from firmware info */
 			for (j = 0; j < mode_index; j++) {
@@ -2286,6 +2292,8 @@ static bool radeon_atombios_parse_pplib_clock_info(struct radeon_device *rdev,
 			VOLTAGE_SW;
 		rdev->pm.power_state[state_index].clock_info[mode_index].voltage.voltage =
 			le16_to_cpu(clock_info->evergreen.usVDDC);
+		rdev->pm.power_state[state_index].clock_info[mode_index].voltage.vddci =
+			le16_to_cpu(clock_info->evergreen.usVDDCI);
 	} else {
 		sclk = le16_to_cpu(clock_info->r600.usEngineClockLow);
 		sclk |= clock_info->r600.ucEngineClockHigh << 16;

drivers/gpu/drm/radeon/radeon_pm.c

@@ -538,6 +538,9 @@ void radeon_pm_resume(struct radeon_device *rdev)
 		if (rdev->pm.default_vddc)
 			radeon_atom_set_voltage(rdev, rdev->pm.default_vddc,
 						SET_VOLTAGE_TYPE_ASIC_VDDC);
+		if (rdev->pm.default_vddci)
+			radeon_atom_set_voltage(rdev, rdev->pm.default_vddci,
+						SET_VOLTAGE_TYPE_ASIC_VDDCI);
 		if (rdev->pm.default_sclk)
 			radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
 		if (rdev->pm.default_mclk)
@@ -550,6 +553,7 @@ void radeon_pm_resume(struct radeon_device *rdev)
 	rdev->pm.current_sclk = rdev->pm.default_sclk;
 	rdev->pm.current_mclk = rdev->pm.default_mclk;
 	rdev->pm.current_vddc = rdev->pm.power_state[rdev->pm.default_power_state_index].clock_info[0].voltage.voltage;
+	rdev->pm.current_vddci = rdev->pm.power_state[rdev->pm.default_power_state_index].clock_info[0].voltage.vddci;
 	if (rdev->pm.pm_method == PM_METHOD_DYNPM
 	    && rdev->pm.dynpm_state == DYNPM_STATE_SUSPENDED) {
 		rdev->pm.dynpm_state = DYNPM_STATE_ACTIVE;