1 /*
2  * linux/arch/arm/mach-pxa/clock-pxa2xx.c
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License version 2 as
6  * published by the Free Software Foundation.
7  */
8 
9 #include <linux/module.h>
10 #include <linux/kernel.h>
11 #include <linux/init.h>
12 #include <linux/syscore_ops.h>
13 
14 #include <mach/pxa2xx-regs.h>
15 
16 #include "clock.h"
17 
clk_pxa2xx_cken_enable(struct clk * clk)18 void clk_pxa2xx_cken_enable(struct clk *clk)
19 {
20 	CKEN |= 1 << clk->cken;
21 }
22 
clk_pxa2xx_cken_disable(struct clk * clk)23 void clk_pxa2xx_cken_disable(struct clk *clk)
24 {
25 	CKEN &= ~(1 << clk->cken);
26 }
27 
28 const struct clkops clk_pxa2xx_cken_ops = {
29 	.enable		= clk_pxa2xx_cken_enable,
30 	.disable	= clk_pxa2xx_cken_disable,
31 };
32 
33 #ifdef CONFIG_PM
34 static uint32_t saved_cken;
35 
pxa2xx_clock_suspend(void)36 static int pxa2xx_clock_suspend(void)
37 {
38 	saved_cken = CKEN;
39 	return 0;
40 }
41 
pxa2xx_clock_resume(void)42 static void pxa2xx_clock_resume(void)
43 {
44 	CKEN = saved_cken;
45 }
46 #else
47 #define pxa2xx_clock_suspend	NULL
48 #define pxa2xx_clock_resume	NULL
49 #endif
50 
51 struct syscore_ops pxa2xx_clock_syscore_ops = {
52 	.suspend	= pxa2xx_clock_suspend,
53 	.resume		= pxa2xx_clock_resume,
54 };
55