Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

drm/i915: TVDAC_STATE_CHG does not indicate successful load-detect

Browse source 
Do not use this bit to indicate that load detection has completed,
instead just wait for vblank, at which point the load registers will
have been updated.

Signed-off-by: Keith Packard <keithp@keithp.com>
Tested-by: Yi Sun <yi.sun@intel.com>
This commit is contained in:
Keith Packard 2011-05-12 17:10:58 -07:00
parent 835bff7ef2
commit 2bf71160f9
1 changed files with 20 additions and 20 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

40
drivers/gpu/drm/i915/intel_tv.c
View file

@ -1283,26 +1283,26 @@ intel_tv_detect_type (struct intel_tv *intel_tv,
to_intel_crtc(intel_tv->base.base.crtc)->pipe);
type = -1;
if (wait_for((tv_dac = I915_READ(TV_DAC)) & TVDAC_STATE_CHG, 20) == 0) {
DRM_DEBUG_KMS("TV detected: %x, %x\n", tv_ctl, tv_dac);
/*
* A B C
* 0 1 1 Composite
* 1 0 X svideo
* 0 0 0 Component
*/
if ((tv_dac & TVDAC_SENSE_MASK) == (TVDAC_B_SENSE | TVDAC_C_SENSE)) {
DRM_DEBUG_KMS("Detected Composite TV connection\n");
type = DRM_MODE_CONNECTOR_Composite;
} else if ((tv_dac & (TVDAC_A_SENSE|TVDAC_B_SENSE)) == TVDAC_A_SENSE) {
DRM_DEBUG_KMS("Detected S-Video TV connection\n");
type = DRM_MODE_CONNECTOR_SVIDEO;
} else if ((tv_dac & TVDAC_SENSE_MASK) == 0) {
DRM_DEBUG_KMS("Detected Component TV connection\n");
type = DRM_MODE_CONNECTOR_Component;
} else {
DRM_DEBUG_KMS("Unrecognised TV connection\n");
}
tv_dac = I915_READ(TV_DAC);
DRM_DEBUG_KMS("TV detected: %x, %x\n", tv_ctl, tv_dac);
/*
* A B C
* 0 1 1 Composite
* 1 0 X svideo
* 0 0 0 Component
*/
if ((tv_dac & TVDAC_SENSE_MASK) == (TVDAC_B_SENSE | TVDAC_C_SENSE)) {
DRM_DEBUG_KMS("Detected Composite TV connection\n");
type = DRM_MODE_CONNECTOR_Composite;
} else if ((tv_dac & (TVDAC_A_SENSE|TVDAC_B_SENSE)) == TVDAC_A_SENSE) {
DRM_DEBUG_KMS("Detected S-Video TV connection\n");
type = DRM_MODE_CONNECTOR_SVIDEO;
} else if ((tv_dac & TVDAC_SENSE_MASK) == 0) {
DRM_DEBUG_KMS("Detected Component TV connection\n");
type = DRM_MODE_CONNECTOR_Component;
} else {
DRM_DEBUG_KMS("Unrecognised TV connection\n");
type = -1;
}
I915_WRITE(TV_DAC, save_tv_dac & ~TVDAC_STATE_CHG_EN);