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clk: samsung: s5pv210: 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: 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 17:55:28 +02:00 committed by Sylwester Nawrocki
parent 3773ee423e
commit 3ac0b61578
1 changed files with 2 additions and 39 deletions
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41
drivers/clk/samsung/clk-s5pv210.c
View File

@ -14,7 +14,6 @@
#include <linux/clk-provider.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/syscore_ops.h>
#include "clk.h"
#include "clk-pll.h"
@ -83,9 +82,6 @@ enum {
static void __iomem *reg_base;
#ifdef CONFIG_PM_SLEEP
static struct samsung_clk_reg_dump *s5pv210_clk_dump;
/* List of registers that need to be preserved across suspend/resume. */
static unsigned long s5pv210_clk_regs[] __initdata = {
CLK_SRC0,
@ -132,40 +128,6 @@ static unsigned long s5pv210_clk_regs[] __initdata = {
CLK_OUT,
};
static int s5pv210_clk_suspend(void)
{
samsung_clk_save(reg_base, s5pv210_clk_dump,
ARRAY_SIZE(s5pv210_clk_regs));
return 0;
}
static void s5pv210_clk_resume(void)
{
samsung_clk_restore(reg_base, s5pv210_clk_dump,
ARRAY_SIZE(s5pv210_clk_regs));
}
static struct syscore_ops s5pv210_clk_syscore_ops = {
.suspend = s5pv210_clk_suspend,
.resume = s5pv210_clk_resume,
};
static void s5pv210_clk_sleep_init(void)
{
s5pv210_clk_dump =
samsung_clk_alloc_reg_dump(s5pv210_clk_regs,
ARRAY_SIZE(s5pv210_clk_regs));
if (!s5pv210_clk_dump) {
pr_warn("%s: Failed to allocate sleep save data\n", __func__);
return;
}
register_syscore_ops(&s5pv210_clk_syscore_ops);
}
#else
static inline void s5pv210_clk_sleep_init(void) { }
#endif
/* Mux parent lists. */
static const char *const fin_pll_p[] __initconst = {
"xxti",
@ -822,7 +784,8 @@ static void __init __s5pv210_clk_init(struct device_node *np,
samsung_clk_register_alias(ctx, s5pv210_aliases,
ARRAY_SIZE(s5pv210_aliases));
s5pv210_clk_sleep_init();
samsung_clk_sleep_init(reg_base, s5pv210_clk_regs,
ARRAY_SIZE(s5pv210_clk_regs));
samsung_clk_of_add_provider(np, ctx);