Attachment 34812 Details for Bug 26888 – try the debug patch that dumps the output pixel clock range of SDVO device

[patch] try the debug patch that dumps the output pixel clock range of SDVO device

0001-drm-i915-Get-the-output-pixel-clock-range-of-SDVO-d.patch (text/plain), 1.81 KB, created by ykzhao on 2010-04-08 07:40:26 UTC

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Creator: ykzhao

Created: 2010-04-08 07:40:26 UTC

Size: 1.81 KB

patch

obsolete

>From 4a604e5b68c28dccf42eec9f97b3905c185b749f Mon Sep 17 00:00:00 2001
>From: Zhao Yakui <yakui.zhao@intel.com>
>Date: Thu, 8 Apr 2010 22:14:19 +0800
>Subject: [PATCH] drm/i915: Get the output pixel clock range of SDVO device
>
>Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
>---
> drivers/gpu/drm/i915/intel_sdvo.c |   22 ++++++++++++++++++++++
> 1 files changed, 22 insertions(+), 0 deletions(-)
>
>diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
>index 48daee5..d2bac7e 100644
>--- a/drivers/gpu/drm/i915/intel_sdvo.c
>+++ b/drivers/gpu/drm/i915/intel_sdvo.c
>@@ -2764,6 +2764,27 @@ static void intel_sdvo_create_enhance_property(struct drm_connector *connector)
> 	return;
> }
> 
>+static void intel_sdvo_get_output_pixel_clock_range(struct intel_output *intel_output)
>+{
>+	struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv;
>+	struct intel_sdvo_pixel_clock_range clocks;
>+	u8 status;
>+
>+	intel_sdvo_set_target_output(intel_output, sdvo_priv->controlled_output);
>+
>+	intel_sdvo_write_cmd(intel_output, SDVO_CMD_GET_OUTPUT_PIXEL_CLOCK_RANGE,
>+			     NULL, 0);
>+
>+	status = intel_sdvo_read_response(intel_output, &clocks, sizeof(clocks));
>+
>+	if (status != SDVO_CMD_STATUS_SUCCESS)
>+		return ;
>+
>+	/* Convert the values from units of 10 kHz to kHz. */
>+	printk("output clock range of SDVO device is %d-%dKHz\n",
>+				clocks.min * 10, clocks.max * 10);
>+	return;
>+}
> bool intel_sdvo_init(struct drm_device *dev, int output_device)
> {
> 	struct drm_i915_private *dev_priv = dev->dev_private;
>@@ -2870,6 +2891,7 @@ bool intel_sdvo_init(struct drm_device *dev, int output_device)
> 					       &sdvo_priv->pixel_clock_min,
> 					       &sdvo_priv->pixel_clock_max);
> 
>+	intel_sdvo_get_output_pixel_clock_range(intel_output);
> 
> 	DRM_DEBUG_KMS("%s device VID/DID: %02X:%02X.%02X, "
> 			"clock range %dMHz - %dMHz, "
>-- 
>1.5.4.5
>

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