redonkable/alistair23-linux
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drm/exynos: added mutex lock and code clean.

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Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Inki Dae 2011-12-16 21:49:03 +09:00
parent 52c68814cd
commit c32b06ef7d
1 changed files with 25 additions and 12 deletions
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37
drivers/gpu/drm/exynos/exynos_drm_fimd.c
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@ -87,6 +87,7 @@ struct fimd_context {
u32 vidcon0;
u32 vidcon1;
bool suspended;
struct mutex lock;
struct fb_videomode *timing;
};
@ -137,11 +138,22 @@ static struct exynos_drm_display_ops fimd_display_ops = {
static void fimd_dpms(struct device *subdrv_dev, int mode)
{
struct fimd_context *ctx = get_fimd_context(subdrv_dev);
DRM_DEBUG_KMS("%s, %d\n", __FILE__, mode);
mutex_lock(&ctx->lock);
switch (mode) {
case DRM_MODE_DPMS_ON:
pm_runtime_get_sync(subdrv_dev);
/*
* enable fimd hardware only if suspended status.
*
* P.S. fimd_dpms function would be called at booting time so
* clk_enable could be called double time.
*/
if (ctx->suspended)
pm_runtime_get_sync(subdrv_dev);
break;
case DRM_MODE_DPMS_STANDBY:
case DRM_MODE_DPMS_SUSPEND:
@ -152,6 +164,8 @@ static void fimd_dpms(struct device *subdrv_dev, int mode)
DRM_DEBUG_KMS("unspecified mode %d\n", mode);
break;
}
mutex_unlock(&ctx->lock);
}
static void fimd_apply(struct device *subdrv_dev)
@ -803,13 +817,6 @@ static int __devinit fimd_probe(struct platform_device *pdev)
goto err_req_irq;
}
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
pm_runtime_get_sync(dev);
for (win = 0; win < WINDOWS_NR; win++)
fimd_clear_win(ctx, win);
ctx->clkdiv = fimd_calc_clkdiv(ctx, timing);
ctx->vidcon0 = pdata->vidcon0;
ctx->vidcon1 = pdata->vidcon1;
@ -831,7 +838,17 @@ static int __devinit fimd_probe(struct platform_device *pdev)
subdrv->manager.display_ops = &fimd_display_ops;
subdrv->manager.dev = dev;
mutex_init(&ctx->lock);
platform_set_drvdata(pdev, ctx);
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
pm_runtime_get_sync(dev);
for (win = 0; win < WINDOWS_NR; win++)
fimd_clear_win(ctx, win);
exynos_drm_subdrv_register(subdrv);
return 0;
@ -894,7 +911,6 @@ out:
#ifdef CONFIG_PM_SLEEP
static int fimd_suspend(struct device *dev)
{
struct fimd_context *ctx = get_fimd_context(dev);
int ret;
if (pm_runtime_suspended(dev))
@ -904,13 +920,11 @@ static int fimd_suspend(struct device *dev)
if (ret < 0)
return ret;
ctx->suspended = true;
return 0;
}
static int fimd_resume(struct device *dev)
{
struct fimd_context *ctx = get_fimd_context(dev);
int ret;
ret = pm_runtime_resume(dev);
@ -931,7 +945,6 @@ static int fimd_resume(struct device *dev)
pm_runtime_enable(dev);
ctx->suspended = false;
return 0;
}
#endif