2 * Runtime PM support code for OMAP1
4 * Author: Kevin Hilman, Deep Root Systems, LLC
6 * Copyright (C) 2010 Texas Instruments, Inc.
8 * This file is licensed under the terms of the GNU General Public
9 * License version 2. This program is licensed "as is" without any
10 * warranty of any kind, whether express or implied.
12 #include <linux/init.h>
13 #include <linux/kernel.h>
15 #include <linux/pm_runtime.h>
16 #include <linux/platform_device.h>
17 #include <linux/mutex.h>
18 #include <linux/clk.h>
19 #include <linux/err.h>
21 #include <plat/omap_device.h>
22 #include <plat/omap-pm.h>
24 #ifdef CONFIG_PM_RUNTIME
25 static int omap1_pm_runtime_suspend(struct device
*dev
)
27 struct clk
*iclk
, *fclk
;
30 dev_dbg(dev
, "%s\n", __func__
);
32 ret
= pm_generic_runtime_suspend(dev
);
34 fclk
= clk_get(dev
, "fck");
40 iclk
= clk_get(dev
, "ick");
49 static int omap1_pm_runtime_resume(struct device
*dev
)
52 struct clk
*iclk
, *fclk
;
54 dev_dbg(dev
, "%s\n", __func__
);
56 iclk
= clk_get(dev
, "ick");
62 fclk
= clk_get(dev
, "fck");
68 return pm_generic_runtime_resume(dev
);
71 static int __init
omap1_pm_runtime_init(void)
73 const struct dev_pm_ops
*pm
;
74 struct dev_pm_ops
*omap_pm
;
76 pm
= platform_bus_get_pm_ops();
78 pr_err("%s: unable to get dev_pm_ops from platform_bus\n",
83 omap_pm
= kmemdup(pm
, sizeof(struct dev_pm_ops
), GFP_KERNEL
);
85 pr_err("%s: unable to alloc memory for new dev_pm_ops\n",
90 omap_pm
->runtime_suspend
= omap1_pm_runtime_suspend
;
91 omap_pm
->runtime_resume
= omap1_pm_runtime_resume
;
93 platform_bus_set_pm_ops(omap_pm
);
97 core_initcall(omap1_pm_runtime_init
);
98 #endif /* CONFIG_PM_RUNTIME */