linux-kernel - [PATCH 3.16.y-ckt 114/183] drm/radeon: fix voltage setup on hawaii

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Message-Id: <1425635874-19087-115-git-send-email-luis.henriques@canonical.com>
Date:	Fri,  6 Mar 2015 09:56:45 +0000
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Alex Deucher <alexander.deucher@....com>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.16.y-ckt 114/183] drm/radeon: fix voltage setup on hawaii

3.16.7-ckt8 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Alex Deucher <alexander.deucher@....com>

commit 09b6e85fc868568e1b2820235a2a851aecbccfcc upstream.

Missing parameter when fetching the real voltage values
from atom.  Fixes problems with dynamic clocking on
certain boards.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=87457

Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 drivers/gpu/drm/radeon/radeon_atombios.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index be6705eeb649..1db2be827ea2 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -3280,6 +3280,7 @@ int radeon_atom_get_voltage_evv(struct radeon_device *rdev,
 
 	args.in.ucVoltageType = VOLTAGE_TYPE_VDDC;
 	args.in.ucVoltageMode = ATOM_GET_VOLTAGE_EVV_VOLTAGE;
+	args.in.usVoltageLevel = cpu_to_le16(virtual_voltage_id);
 	args.in.ulSCLKFreq =
 		cpu_to_le32(rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk.entries[entry_id].clk);
 
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