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drm/i915: add pipe A force quirks to i915 driver 

Ported over from the old UMS list.  Unfortunately they're still
necessary especially on older laptop platforms.

Fixes https://bugs.freedesktop.org/show_bug.cgi?id=22126.

Tested-by: Xavier <shiningxc@gmail.com>
Tested-by: Diego Escalante Urrelo <diegoe@gnome.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Jesse Barnes 2010-07-19 13:53:12 -07:00 committed by Eric Anholt
parent 0cc4d4300c
commit b690e96cf9
2 changed files with 72 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/i915/i915_drv.h
View File

@ -223,6 +223,8 @@ enum intel_pch {
PCH_CPT, /* Cougarpoint PCH */
};
#define QUIRK_PIPEA_FORCE (1<<0)
struct intel_fbdev;
typedef struct drm_i915_private {
@ -338,6 +340,8 @@ typedef struct drm_i915_private {
/* PCH chipset type */
enum intel_pch pch_type;
unsigned long quirks;
/* Register state */
bool modeset_on_lid;
u8 saveLBB;

69
drivers/gpu/drm/i915/intel_display.c
View File

@ -2270,6 +2270,11 @@ static void i9xx_crtc_dpms(struct drm_crtc *crtc, int mode)
intel_wait_for_vblank(dev);
}
/* Don't disable pipe A or pipe A PLLs if needed */
if (pipeconf_reg == PIPEACONF &&
(dev_priv->quirks & QUIRK_PIPEA_FORCE))
goto skip_pipe_off;
/* Next, disable display pipes */
temp = I915_READ(pipeconf_reg);
if ((temp & PIPEACONF_ENABLE) != 0) {
@ -2285,7 +2290,7 @@ static void i9xx_crtc_dpms(struct drm_crtc *crtc, int mode)
I915_WRITE(dpll_reg, temp & ~DPLL_VCO_ENABLE);
I915_READ(dpll_reg);
}
skip_pipe_off:
/* Wait for the clocks to turn off. */
udelay(150);
break;
@ -5526,6 +5531,66 @@ static void intel_init_display(struct drm_device *dev)
}
}
/*
* Some BIOSes insist on assuming the GPU's pipe A is enabled at suspend,
* resume, or other times. This quirk makes sure that's the case for
* affected systems.
*/
static void quirk_pipea_force (struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
dev_priv->quirks |= QUIRK_PIPEA_FORCE;
DRM_DEBUG_DRIVER("applying pipe a force quirk\n");
}
struct intel_quirk {
int device;
int subsystem_vendor;
int subsystem_device;
void (*hook)(struct drm_device *dev);
};
struct intel_quirk intel_quirks[] = {
/* HP Compaq 2730p needs pipe A force quirk (LP: #291555) */
{ 0x2a42, 0x103c, 0x30eb, quirk_pipea_force },
/* HP Mini needs pipe A force quirk (LP: #322104) */
{ 0x27ae,0x103c, 0x361a, quirk_pipea_force },
/* Thinkpad R31 needs pipe A force quirk */
{ 0x3577, 0x1014, 0x0505, quirk_pipea_force },
/* Toshiba Protege R-205, S-209 needs pipe A force quirk */
{ 0x2592, 0x1179, 0x0001, quirk_pipea_force },
/* ThinkPad X30 needs pipe A force quirk (LP: #304614) */
{ 0x3577, 0x1014, 0x0513, quirk_pipea_force },
/* ThinkPad X40 needs pipe A force quirk */
/* ThinkPad T60 needs pipe A force quirk (bug #16494) */
{ 0x2782, 0x17aa, 0x201a, quirk_pipea_force },
/* 855 & before need to leave pipe A & dpll A up */
{ 0x3582, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
{ 0x2562, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
};
static void intel_init_quirks(struct drm_device *dev)
{
struct pci_dev *d = dev->pdev;
int i;
for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
struct intel_quirk *q = &intel_quirks[i];
if (d->device == q->device &&
(d->subsystem_vendor == q->subsystem_vendor ||
q->subsystem_vendor == PCI_ANY_ID) &&
(d->subsystem_device == q->subsystem_device ||
q->subsystem_device == PCI_ANY_ID))
q->hook(dev);
}
}
void intel_modeset_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
@ -5538,6 +5603,8 @@ void intel_modeset_init(struct drm_device *dev)
dev->mode_config.funcs = (void *)&intel_mode_funcs;
intel_init_quirks(dev);
intel_init_display(dev);
if (IS_I965G(dev)) {