Commit b5331e2f authored by Marek Szyprowski's avatar Marek Szyprowski Committed by Sylwester Nawrocki
Browse files

clk: samsung: s3c2443: Use generic helper for handling suspend/resume 



Replace common suspend/resume handling code by generic helper.
Almost no functional change, the only difference is in handling
of hypothetical memory allocation failure on boot.

Signed-off-by: default avatarMarek Szyprowski <m.szyprowski@samsung.com>
Acked-by: default avatarChanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: default avatarKrzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: default avatarSylwester Nawrocki <snawrocki@kernel.org>
parent 1b3493d7

drivers/clk/samsung/clk-s3c2443.c

+2 −41
Original line number Diff line number Diff line
@@ -11,7 +11,6 @@ 
#include <linux/clk-provider.h>

#include <linux/of.h>

#include <linux/of_address.h>

#include <linux/syscore_ops.h>

#include <linux/reboot.h>



#include <dt-bindings/clock/s3c2443.h>
@@ -43,9 +42,6 @@ enum supported_socs { 


static void __iomem *reg_base;



#ifdef CONFIG_PM_SLEEP

static struct samsung_clk_reg_dump *s3c2443_save;



/*

 * list of controller registers to be saved and restored during a

 * suspend/resume cycle.
@@ -65,42 +61,6 @@ static unsigned long s3c2443_clk_regs[] __initdata = { 
	SCLKCON,

};



static int s3c2443_clk_suspend(void)

{

	samsung_clk_save(reg_base, s3c2443_save,

				ARRAY_SIZE(s3c2443_clk_regs));



	return 0;

}



static void s3c2443_clk_resume(void)

{

	samsung_clk_restore(reg_base, s3c2443_save,

				ARRAY_SIZE(s3c2443_clk_regs));

}



static struct syscore_ops s3c2443_clk_syscore_ops = {

	.suspend = s3c2443_clk_suspend,

	.resume = s3c2443_clk_resume,

};



static void __init s3c2443_clk_sleep_init(void)

{

	s3c2443_save = samsung_clk_alloc_reg_dump(s3c2443_clk_regs,

						ARRAY_SIZE(s3c2443_clk_regs));

	if (!s3c2443_save) {

		pr_warn("%s: failed to allocate sleep save data, no sleep support!\n",

			__func__);

		return;

	}



	register_syscore_ops(&s3c2443_clk_syscore_ops);

	return;

}

#else

static void __init s3c2443_clk_sleep_init(void) {}

#endif



PNAME(epllref_p) = { "mpllref", "mpllref", "xti", "ext" };

PNAME(esysclk_p) = { "epllref", "epll" };

PNAME(mpllref_p) = { "xti", "mdivclk" };
@@ -450,7 +410,8 @@ void __init s3c2443_common_clk_init(struct device_node *np, unsigned long xti_f, 
		break;

	}



	s3c2443_clk_sleep_init();

	samsung_clk_sleep_init(reg_base, s3c2443_clk_regs,

			       ARRAY_SIZE(s3c2443_clk_regs));



	samsung_clk_of_add_provider(np, ctx);

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