openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/radeon: add a dpm quirk list 

Disable dpm on certain problematic boards rather than
disabling dpm for the entire chip family since most
boards work fine.

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1386534
https://bugzilla.kernel.org/show_bug.cgi?id=83731

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Alex Deucher 2015-01-08 10:46:33 -05:00
parent 3a01fd367e
commit 4369a69ec6
1 changed files with 33 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
drivers/gpu/drm/radeon/radeon_pm.c
View File

@ -1287,8 +1287,39 @@ static int radeon_pm_init_dpm(struct radeon_device *rdev)
return ret;
}
struct radeon_dpm_quirk {
u32 chip_vendor;
u32 chip_device;
u32 subsys_vendor;
u32 subsys_device;
};
/* cards with dpm stability problems */
static struct radeon_dpm_quirk radeon_dpm_quirk_list[] = {
/* TURKS - https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1386534 */
{ PCI_VENDOR_ID_ATI, 0x6759, 0x1682, 0x3195 },
/* TURKS - https://bugzilla.kernel.org/show_bug.cgi?id=83731 */
{ PCI_VENDOR_ID_ATI, 0x6840, 0x1179, 0xfb81 },
{ 0, 0, 0, 0 },
};
int radeon_pm_init(struct radeon_device *rdev)
{
struct radeon_dpm_quirk *p = radeon_dpm_quirk_list;
bool disable_dpm = false;
/* Apply dpm quirks */
while (p && p->chip_device != 0) {
if (rdev->pdev->vendor == p->chip_vendor &&
rdev->pdev->device == p->chip_device &&
rdev->pdev->subsystem_vendor == p->subsys_vendor &&
rdev->pdev->subsystem_device == p->subsys_device) {
disable_dpm = true;
break;
}
++p;
}
/* enable dpm on rv6xx+ */
switch (rdev->family) {
case CHIP_RV610:
@ -1344,6 +1375,8 @@ int radeon_pm_init(struct radeon_device *rdev)
(!(rdev->flags & RADEON_IS_IGP)) &&
(!rdev->smc_fw))
rdev->pm.pm_method = PM_METHOD_PROFILE;
else if (disable_dpm && (radeon_dpm == -1))
rdev->pm.pm_method = PM_METHOD_PROFILE;
else if (radeon_dpm == 0)
rdev->pm.pm_method = PM_METHOD_PROFILE;
else