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authorAlex Deucher <alexdeucher@gmail.com>2011-01-12 20:05:11 -0500
committerDave Airlie <airlied@redhat.com>2011-01-17 12:21:34 +1000
commitd42dd579ac1498e23f29465225fa3eee4520f5e5 (patch)
tree0781d5ae64b039a23bfdc2ec2c7356b679247d18 /drivers
parent394d83c17fac2b7bcf05cb99d1e945135767bb6b (diff)
drm/radeon/kms: add module option for pcie gen2
Switching to pcie gen2 causes problems on some boards. Add a module option to turn it on/off. There are gen2 compatability issues with some motherboards it seems. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=33027 Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/radeon/evergreen.c3
-rw-r--r--drivers/gpu/drm/radeon/r600.c3
-rw-r--r--drivers/gpu/drm/radeon/radeon.h1
-rw-r--r--drivers/gpu/drm/radeon/radeon_drv.c4
-rw-r--r--drivers/gpu/drm/radeon/rv770.c3
5 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 7fe8ebdcdc0e..e201a88caf59 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -3158,6 +3158,9 @@ static void evergreen_pcie_gen2_enable(struct radeon_device *rdev)
{
u32 link_width_cntl, speed_cntl;
+ if (radeon_pcie_gen2 == 0)
+ return;
+
if (rdev->flags & RADEON_IS_IGP)
return;
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 6b50716267c0..9fe86253cfcd 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -3658,6 +3658,9 @@ static void r600_pcie_gen2_enable(struct radeon_device *rdev)
u32 link_width_cntl, lanes, speed_cntl, training_cntl, tmp;
u16 link_cntl2;
+ if (radeon_pcie_gen2 == 0)
+ return;
+
if (rdev->flags & RADEON_IS_IGP)
return;
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index e9486630a467..71d2a554bbe6 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -92,6 +92,7 @@ extern int radeon_tv;
extern int radeon_audio;
extern int radeon_disp_priority;
extern int radeon_hw_i2c;
+extern int radeon_pcie_gen2;
/*
* Copy from radeon_drv.h so we don't have to include both and have conflicting
diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index be5cb4f28c29..d5680a0c87af 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -104,6 +104,7 @@ int radeon_tv = 1;
int radeon_audio = 1;
int radeon_disp_priority = 0;
int radeon_hw_i2c = 0;
+int radeon_pcie_gen2 = 0;
MODULE_PARM_DESC(no_wb, "Disable AGP writeback for scratch registers");
module_param_named(no_wb, radeon_no_wb, int, 0444);
@@ -147,6 +148,9 @@ module_param_named(disp_priority, radeon_disp_priority, int, 0444);
MODULE_PARM_DESC(hw_i2c, "hw i2c engine enable (0 = disable)");
module_param_named(hw_i2c, radeon_hw_i2c, int, 0444);
+MODULE_PARM_DESC(pcie_gen2, "PCIE Gen2 mode (1 = enable)");
+module_param_named(pcie_gen2, radeon_pcie_gen2, int, 0444);
+
static int radeon_suspend(struct drm_device *dev, pm_message_t state)
{
drm_radeon_private_t *dev_priv = dev->dev_private;
diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index 3a264aa3a79a..bd9ee90421e4 100644
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -1372,6 +1372,9 @@ static void rv770_pcie_gen2_enable(struct radeon_device *rdev)
u32 link_width_cntl, lanes, speed_cntl, tmp;
u16 link_cntl2;
+ if (radeon_pcie_gen2 == 0)
+ return;
+
if (rdev->flags & RADEON_IS_IGP)
return;