diff options
Diffstat (limited to 'drivers/media/video/s5p-mfc/s5p_mfc_pm.c')
| -rw-r--r-- | drivers/media/video/s5p-mfc/s5p_mfc_pm.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/drivers/media/video/s5p-mfc/s5p_mfc_pm.c b/drivers/media/video/s5p-mfc/s5p_mfc_pm.c index f6a3035c4fb..738a607be43 100644 --- a/drivers/media/video/s5p-mfc/s5p_mfc_pm.c +++ b/drivers/media/video/s5p-mfc/s5p_mfc_pm.c @@ -41,15 +41,29 @@ int s5p_mfc_init_pm(struct s5p_mfc_dev *dev) pm->clock_gate = clk_get(&dev->plat_dev->dev, MFC_GATE_CLK_NAME); if (IS_ERR(pm->clock_gate)) { mfc_err("Failed to get clock-gating control\n"); - ret = -ENOENT; + ret = PTR_ERR(pm->clock_gate); goto err_g_ip_clk; } + + ret = clk_prepare(pm->clock_gate); + if (ret) { + mfc_err("Failed to preapre clock-gating control\n"); + goto err_p_ip_clk; + } + pm->clock = clk_get(&dev->plat_dev->dev, MFC_CLKNAME); if (IS_ERR(pm->clock)) { mfc_err("Failed to get MFC clock\n"); - ret = -ENOENT; + ret = PTR_ERR(pm->clock); goto err_g_ip_clk_2; } + + ret = clk_prepare(pm->clock); + if (ret) { + mfc_err("Failed to prepare MFC clock\n"); + goto err_p_ip_clk_2; + } + atomic_set(&pm->power, 0); #ifdef CONFIG_PM_RUNTIME pm->device = &dev->plat_dev->dev; @@ -59,7 +73,11 @@ int s5p_mfc_init_pm(struct s5p_mfc_dev *dev) atomic_set(&clk_ref, 0); #endif return 0; +err_p_ip_clk_2: + clk_put(pm->clock); err_g_ip_clk_2: + clk_unprepare(pm->clock_gate); +err_p_ip_clk: clk_put(pm->clock_gate); err_g_ip_clk: return ret; @@ -67,7 +85,9 @@ err_g_ip_clk: void s5p_mfc_final_pm(struct s5p_mfc_dev *dev) { + clk_unprepare(pm->clock_gate); clk_put(pm->clock_gate); + clk_unprepare(pm->clock); clk_put(pm->clock); #ifdef CONFIG_PM_RUNTIME pm_runtime_disable(pm->device); |