commit: c1230df7e19e0f27655c0eb9d966c7e03be7cc50 From: Paulo Zanoni <[email protected]> Date: Wed, 2 May 2012 22:55:43 -0300 Subject: drm/i915: enable dip before writing data on gen4
While testing with the intel_infoframes tool on gen4, I see that when video DIP is disabled, what we write to the DATA memory is not exactly what we read back later. This regression has been introduce in commit 64a8fc0145a1d0fdc25fc9367c2e6c621955fb3b Author: Jesse Barnes <[email protected]> Date: Thu Sep 22 11:16:00 2011 +0530 drm/i915: fix ILK+ infoframe support That commit was setting VIDEO_DIP_CTL to 0 when initializing, which caused the problem. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=43947 Cc: [email protected] Tested-by: Yang Guang <[email protected]> Signed-off-by: Paulo Zanoni <[email protected]> Reviewed-by: Eugeni Dodonov <[email protected]> [danvet: Pimped commit message by using the usual commit citation layout.] Signed-off-by: Daniel Vetter <[email protected]> --- drivers/gpu/drm/i915/intel_hdmi.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index cae3e5f..2d7f47b 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -136,7 +136,7 @@ static void i9xx_write_infoframe(struct drm_encoder *encoder, val &= ~VIDEO_DIP_SELECT_MASK; - I915_WRITE(VIDEO_DIP_CTL, val | port | flags); + I915_WRITE(VIDEO_DIP_CTL, VIDEO_DIP_ENABLE | val | port | flags); for (i = 0; i < len; i += 4) { I915_WRITE(VIDEO_DIP_DATA, *data); -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
