From: Marek Szyprowski m.szyprowski@samsung.com
A call to pm_runtime_set_active() forces device to be at the active state and skips calling its runtime suspend/resume callbacks. This results in a freeze with a new power domain code based on gen_pd. Fimd driver does all required runtime power management calls, so this pm_runtime_set_active call is buggy. This patch removes it and corrects clock management in probe function (clocks are now enabled by pm_runtime_get_sync() call).
Signed-off-by: Marek Szyprowski m.szyprowski@samsung.com Signed-off-by: Inki Dae inki.dae@samsung.com Signed-off-by: Kyungmin Park kyungmin.park@samsung.com --- drivers/gpu/drm/exynos/exynos_drm_fimd.c | 17 ++++++----------- 1 files changed, 6 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c index 360adf2..56458ee 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c @@ -817,8 +817,6 @@ static int __devinit fimd_probe(struct platform_device *pdev) goto err_clk_get; }
- clk_enable(ctx->bus_clk); - ctx->lcd_clk = clk_get(dev, "sclk_fimd"); if (IS_ERR(ctx->lcd_clk)) { dev_err(dev, "failed to get lcd clock\n"); @@ -826,8 +824,6 @@ static int __devinit fimd_probe(struct platform_device *pdev) goto err_bus_clk; }
- clk_enable(ctx->lcd_clk); - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { dev_err(dev, "failed to find registers\n"); @@ -864,17 +860,11 @@ static int __devinit fimd_probe(struct platform_device *pdev) goto err_req_irq; }
- ctx->clkdiv = fimd_calc_clkdiv(ctx, &panel->timing); ctx->vidcon0 = pdata->vidcon0; ctx->vidcon1 = pdata->vidcon1; ctx->default_win = pdata->default_win; ctx->panel = panel;
- panel->timing.pixclock = clk_get_rate(ctx->lcd_clk) / ctx->clkdiv; - - DRM_DEBUG_KMS("pixel clock = %d, clkdiv = %d\n", - panel->timing.pixclock, ctx->clkdiv); - subdrv = &ctx->subdrv;
subdrv->probe = fimd_subdrv_probe; @@ -889,10 +879,15 @@ static int __devinit fimd_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, ctx);
- pm_runtime_set_active(dev); pm_runtime_enable(dev); pm_runtime_get_sync(dev);
+ ctx->clkdiv = fimd_calc_clkdiv(ctx, &panel->timing); + panel->timing.pixclock = clk_get_rate(ctx->lcd_clk) / ctx->clkdiv; + + DRM_DEBUG_KMS("pixel clock = %d, clkdiv = %d\n", + panel->timing.pixclock, ctx->clkdiv); + for (win = 0; win < WINDOWS_NR; win++) fimd_clear_win(ctx, win);