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fbdev: sh_mobile_hdmi: fix regression: statically enable RTPM

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A recent modification to the runtime PM code on mach-shmobile made a wrong
RTPM implementation in the sh_mobile_hdmi driver apparent, which broke
HDMI hotplug detection support on ap4evb. This patch does not implement a
proper dynamic RTPM support for sh_mobile_hdmi, instead it restores the
previous working state by statically enabling it. A more power-efficient
solution should be implemented for the next kernel version.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Guennadi Liakhovetski 2011-06-14 14:27:22 +00:00 committed by Paul Mundt
parent d64c132ffe
commit d521dd944e
1 changed files with 5 additions and 13 deletions
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18
drivers/video/sh_mobile_hdmi.c
View file

@ -1127,23 +1127,16 @@ static void sh_hdmi_edid_work_fn(struct work_struct *work)
struct fb_info *info = hdmi->info;
unsigned long parent_rate = 0, hdmi_rate;
/* A device has been plugged in */
pm_runtime_get_sync(hdmi->dev);
ret = sh_hdmi_read_edid(hdmi, &hdmi_rate, &parent_rate);
if (ret < 0) {
pm_runtime_put(hdmi->dev);
if (ret < 0)
goto out;
}
hdmi->hp_state = HDMI_HOTPLUG_EDID_DONE;
/* Reconfigure the clock */
ret = sh_hdmi_clk_configure(hdmi, hdmi_rate, parent_rate);
if (ret < 0) {
pm_runtime_put(hdmi->dev);
if (ret < 0)
goto out;
}
msleep(10);
sh_hdmi_configure(hdmi);
@ -1191,7 +1184,6 @@ static void sh_hdmi_edid_work_fn(struct work_struct *work)
fb_set_suspend(hdmi->info, 1);
console_unlock();
pm_runtime_put(hdmi->dev);
}
out:
@ -1312,7 +1304,7 @@ static int __init sh_hdmi_probe(struct platform_device *pdev)
INIT_DELAYED_WORK(&hdmi->edid_work, sh_hdmi_edid_work_fn);
pm_runtime_enable(&pdev->dev);
pm_runtime_resume(&pdev->dev);
pm_runtime_get_sync(&pdev->dev);
/* Product and revision IDs are 0 in sh-mobile version */
dev_info(&pdev->dev, "Detected HDMI controller 0x%x:0x%x\n",
@ -1340,7 +1332,7 @@ static int __init sh_hdmi_probe(struct platform_device *pdev)
ecodec:
free_irq(irq, hdmi);
ereqirq:
pm_runtime_suspend(&pdev->dev);
pm_runtime_put(&pdev->dev);
pm_runtime_disable(&pdev->dev);
iounmap(hdmi->base);
emap:
@ -1377,7 +1369,7 @@ static int __exit sh_hdmi_remove(struct platform_device *pdev)
free_irq(irq, hdmi);
/* Wait for already scheduled work */
cancel_delayed_work_sync(&hdmi->edid_work);
pm_runtime_suspend(&pdev->dev);
pm_runtime_put(&pdev->dev);
pm_runtime_disable(&pdev->dev);
clk_disable(hdmi->hdmi_clk);
clk_put(hdmi->hdmi_clk);