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 | 137 |
1 files changed, 0 insertions, 137 deletions
diff --git a/drivers/media/video/s5p-mfc/s5p_mfc_pm.c b/drivers/media/video/s5p-mfc/s5p_mfc_pm.c deleted file mode 100644 index 738a607..0000000 --- a/drivers/media/video/s5p-mfc/s5p_mfc_pm.c +++ /dev/null @@ -1,137 +0,0 @@ -/* - * linux/drivers/media/video/s5p-mfc/s5p_mfc_pm.c - * - * Copyright (c) 2010 Samsung Electronics Co., Ltd. - * http://www.samsung.com/ - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#include <linux/clk.h> -#include <linux/err.h> -#include <linux/platform_device.h> -#ifdef CONFIG_PM_RUNTIME -#include <linux/pm_runtime.h> -#endif -#include "s5p_mfc_common.h" -#include "s5p_mfc_debug.h" -#include "s5p_mfc_pm.h" - -#define MFC_CLKNAME "sclk_mfc" -#define MFC_GATE_CLK_NAME "mfc" - -#define CLK_DEBUG - -static struct s5p_mfc_pm *pm; -static struct s5p_mfc_dev *p_dev; - -#ifdef CLK_DEBUG -atomic_t clk_ref; -#endif - -int s5p_mfc_init_pm(struct s5p_mfc_dev *dev) -{ - int ret = 0; - - pm = &dev->pm; - p_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 = 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 = 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; - pm_runtime_enable(pm->device); -#endif -#ifdef CLK_DEBUG - 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; -} - -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); -#endif -} - -int s5p_mfc_clock_on(void) -{ - int ret; -#ifdef CLK_DEBUG - atomic_inc(&clk_ref); - mfc_debug(3, "+ %d", atomic_read(&clk_ref)); -#endif - ret = clk_enable(pm->clock_gate); - return ret; -} - -void s5p_mfc_clock_off(void) -{ -#ifdef CLK_DEBUG - atomic_dec(&clk_ref); - mfc_debug(3, "- %d", atomic_read(&clk_ref)); -#endif - clk_disable(pm->clock_gate); -} - -int s5p_mfc_power_on(void) -{ -#ifdef CONFIG_PM_RUNTIME - return pm_runtime_get_sync(pm->device); -#else - atomic_set(&pm->power, 1); - return 0; -#endif -} - -int s5p_mfc_power_off(void) -{ -#ifdef CONFIG_PM_RUNTIME - return pm_runtime_put_sync(pm->device); -#else - atomic_set(&pm->power, 0); - return 0; -#endif -} - - |