diff options
| author | Alan Cox <alan@linux.intel.com> | 2011-07-05 15:44:46 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-07-05 08:20:45 -0700 |
| commit | 52b6ba09eeba5d48dd8f20cf07a85e81b7acacf4 (patch) | |
| tree | 0a4e7d77de38f5e277ecfa856fcfb926e227c01a /drivers/staging/gma500 | |
| parent | 6a8ca6f5ffbca4ef92da34bd28465539c511b97e (diff) | |
gma500: Workaround for Medfield/Cedarview cursor bug
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/gma500')
| -rw-r--r-- | drivers/staging/gma500/psb_intel_display.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/staging/gma500/psb_intel_display.c b/drivers/staging/gma500/psb_intel_display.c index 65426682c44c..cc7237e2d6b0 100644 --- a/drivers/staging/gma500/psb_intel_display.c +++ b/drivers/staging/gma500/psb_intel_display.c @@ -1278,6 +1278,19 @@ const struct drm_crtc_funcs psb_intel_crtc_funcs = { .destroy = psb_intel_crtc_destroy, }; +/* + * Set the default value of cursor control and base register + * to zero. This is a workaround for h/w defect on Oaktrail + */ +static void psb_intel_cursor_init(struct drm_device *dev, int pipe) +{ + u32 control[3] = { CURACNTR, CURBCNTR, CURCCNTR }; + u32 base[3] = { CURABASE, CURBBASE, CURCBASE }; + + REG_WRITE(control[pipe], 0); + REG_WRITE(base[pipe], 0); +} + void psb_intel_crtc_init(struct drm_device *dev, int pipe, struct psb_intel_mode_device *mode_dev) { @@ -1341,6 +1354,7 @@ void psb_intel_crtc_init(struct drm_device *dev, int pipe, psb_intel_crtc->mode_set.connectors = (struct drm_connector **) (psb_intel_crtc + 1); psb_intel_crtc->mode_set.num_connectors = 0; + psb_intel_cursor_init(dev, pipe); } int psb_intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data, |