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clk: samsung: s3c2410: Use generic helper for handling suspend/resume

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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: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sylwester Nawrocki <snawrocki@kernel.org>
This commit is contained in:
Marek Szyprowski 2018-09-06 17:55:24 +02:00 committed by Sylwester Nawrocki
parent 53e6ab3d07
commit 6bdac3b4c4
1 changed files with 2 additions and 41 deletions
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43
drivers/clk/samsung/clk-s3c2410.c
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@ -11,7 +11,6 @@
#include <linux/clk-provider.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/syscore_ops.h>
#include <dt-bindings/clock/s3c2410.h>
@ -40,9 +39,6 @@ enum s3c2410_plls {
static void __iomem *reg_base;
#ifdef CONFIG_PM_SLEEP
static struct samsung_clk_reg_dump *s3c2410_save;
/*
* list of controller registers to be saved and restored during a
* suspend/resume cycle.
@ -57,42 +53,6 @@ static unsigned long s3c2410_clk_regs[] __initdata = {
CAMDIVN,
};
static int s3c2410_clk_suspend(void)
{
samsung_clk_save(reg_base, s3c2410_save,
ARRAY_SIZE(s3c2410_clk_regs));
return 0;
}
static void s3c2410_clk_resume(void)
{
samsung_clk_restore(reg_base, s3c2410_save,
ARRAY_SIZE(s3c2410_clk_regs));
}
static struct syscore_ops s3c2410_clk_syscore_ops = {
.suspend = s3c2410_clk_suspend,
.resume = s3c2410_clk_resume,
};
static void __init s3c2410_clk_sleep_init(void)
{
s3c2410_save = samsung_clk_alloc_reg_dump(s3c2410_clk_regs,
ARRAY_SIZE(s3c2410_clk_regs));
if (!s3c2410_save) {
pr_warn("%s: failed to allocate sleep save data, no sleep support!\n",
__func__);
return;
}
register_syscore_ops(&s3c2410_clk_syscore_ops);
return;
}
#else
static void __init s3c2410_clk_sleep_init(void) {}
#endif
PNAME(fclk_p) = { "mpll", "div_slow" };
static struct samsung_mux_clock s3c2410_common_muxes[] __initdata = {
@ -461,7 +421,8 @@ void __init s3c2410_common_clk_init(struct device_node *np, unsigned long xti_f,
ARRAY_SIZE(s3c244x_common_aliases));
}
s3c2410_clk_sleep_init();
samsung_clk_sleep_init(reg_base, s3c2410_clk_regs,
ARRAY_SIZE(s3c2410_clk_regs));
samsung_clk_of_add_provider(np, ctx);
}