lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

drm/i915: Fix LVDS panel fitting on Arrandale

Browse Source 
Arrandale has new window based method for panel fitting.
This one enables full screen aspect scaling on LVDS. It fixes
standard mode display failure on LVDS for Arrandale.

Cc: Stable Team <stable@kernel.org>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Zhenyu Wang
2009-09-19 14:54:09 +08:00
committed by Jesse Barnes
parent 730915d65f
commit 8dd81a381e
3 changed files with 24 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/gpu/drm/i915/intel_display.c
View File

@@ -1391,6 +1391,7 @@ static void igdng_crtc_dpms(struct drm_crtc *crtc, int mode)
int transconf_reg = (pipe == 0) ? TRANSACONF : TRANSBCONF;
int pf_ctl_reg = (pipe == 0) ? PFA_CTL_1 : PFB_CTL_1;
int pf_win_size = (pipe == 0) ? PFA_WIN_SZ : PFB_WIN_SZ;
int pf_win_pos = (pipe == 0) ? PFA_WIN_POS : PFB_WIN_POS;
int cpu_htot_reg = (pipe == 0) ? HTOTAL_A : HTOTAL_B;
int cpu_hblank_reg = (pipe == 0) ? HBLANK_A : HBLANK_B;
int cpu_hsync_reg = (pipe == 0) ? HSYNC_A : HSYNC_B;
@@ -1442,6 +1443,19 @@ static void igdng_crtc_dpms(struct drm_crtc *crtc, int mode)
}
}
/* Enable panel fitting for LVDS */
if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
temp = I915_READ(pf_ctl_reg);
I915_WRITE(pf_ctl_reg, temp | PF_ENABLE);
/* currently full aspect */
I915_WRITE(pf_win_pos, 0);
I915_WRITE(pf_win_size,
(dev_priv->panel_fixed_mode->hdisplay << 16) |
(dev_priv->panel_fixed_mode->vdisplay));
}
/* Enable CPU pipe */
temp = I915_READ(pipeconf_reg);
if ((temp & PIPEACONF_ENABLE) == 0) {