Attachment 27289 Details for Bug 21084 – pleaset try the patch on your machine, thanks.

pleaset try the patch on your machine, thanks.

0001-ddc_g4x.patch (text/plain), 1.77 KB, created by MaLing on 2009-07-01 02:56:47 UTC

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Creator: MaLing

Created: 2009-07-01 02:56:47 UTC

Size: 1.77 KB

patch

obsolete

>Subject: [Resend][PATCH 1/3] drm/i915: crt fetch EDID by DVI-I converter on G4x platform
>
>Usually crt mainly get modes via GPIOA ports.
>However on G4X platform we need to probe possible
>ports for DVI-I, which could be wired to GPIOD,
>then fetch our desired EDID, i.e on DG45ID platform 
>we successfully fetch EDID by GPIOD port.
>
>It fixed freedesktop.org bug #21084 
>
>Signed-off-by: Ma Ling <ling.ma@intel.com>
>---
>In this version we will keep effective ddc.
>
> drivers/gpu/drm/i915/intel_crt.c |   28 +++++++++++++++++++++++++++-
> 1 files changed, 27 insertions(+), 1 deletions(-)
>
>diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
>index 6de97fc..af26028 100644
>--- a/drivers/gpu/drm/i915/intel_crt.c
>+++ b/drivers/gpu/drm/i915/intel_crt.c
>@@ -428,8 +428,34 @@ static void intel_crt_destroy(struct drm_connector *connector)
> 
> static int intel_crt_get_modes(struct drm_connector *connector)
> {
>+	int ret;
> 	struct intel_output *intel_output = to_intel_output(connector);
>-	return intel_ddc_get_modes(intel_output);
>+	struct intel_i2c_chan *ddcbus;
>+	struct drm_device *dev = connector->dev;
>+
>+
>+	ret = intel_ddc_get_modes(intel_output);
>+	if (ret || !IS_G4X(dev))
>+		goto end;
>+
>+	ddcbus = intel_output->ddc_bus;
>+	/* Try to probe digital port for output in DVI-I -> VGA mode. */
>+	intel_output->ddc_bus =
>+		intel_i2c_create(connector->dev, GPIOD, "CRTDDC_D");
>+
>+	if (!intel_output->ddc_bus) {
>+		intel_output->ddc_bus = ddcbus;
>+		dev_printk(KERN_ERR, &connector->dev->pdev->dev,
>+			   "DDC bus registration failed for CRTDDC_D.\n");
>+		goto end;
>+	}
>+	/* Try to get modes by GPIOD port */
>+	ret = intel_ddc_get_modes(intel_output);
>+	intel_i2c_destroy(ddcbus);
>+
>+end:
>+	return ret;
>+
> }
> 
> static int intel_crt_set_property(struct drm_connector *connector,
>-- 
>1.5.4.4
>

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Attachments on bug 21084: 24641 | 24642 | 24682 | 24691 | 25950 | 26788 | 26800 | 27070 | 27121 | 27289

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