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clk: samsung: exynos5250: 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 17:55:29 +02:00 committed by Sylwester Nawrocki
parent 3ac0b61578
commit c41b0ff2f6
1 changed files with 2 additions and 40 deletions
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42
drivers/clk/samsung/clk-exynos5250.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-cpu.h"
@ -111,9 +110,6 @@ enum exynos5250_plls {
static void __iomem *reg_base;
#ifdef CONFIG_PM_SLEEP
static struct samsung_clk_reg_dump *exynos5250_save;
/*
* list of controller registers to be saved and restored during a
* suspend/resume cycle.
@ -172,41 +168,6 @@ static const unsigned long exynos5250_clk_regs[] __initconst = {
GATE_IP_ISP1,
};
static int exynos5250_clk_suspend(void)
{
samsung_clk_save(reg_base, exynos5250_save,
ARRAY_SIZE(exynos5250_clk_regs));
return 0;
}
static void exynos5250_clk_resume(void)
{
samsung_clk_restore(reg_base, exynos5250_save,
ARRAY_SIZE(exynos5250_clk_regs));
}
static struct syscore_ops exynos5250_clk_syscore_ops = {
.suspend = exynos5250_clk_suspend,
.resume = exynos5250_clk_resume,
};
static void __init exynos5250_clk_sleep_init(void)
{
exynos5250_save = samsung_clk_alloc_reg_dump(exynos5250_clk_regs,
ARRAY_SIZE(exynos5250_clk_regs));
if (!exynos5250_save) {
pr_warn("%s: failed to allocate sleep save data, no sleep support!\n",
__func__);
return;
}
register_syscore_ops(&exynos5250_clk_syscore_ops);
}
#else
static void __init exynos5250_clk_sleep_init(void) {}
#endif
/* list of all parent clock list */
PNAME(mout_apll_p) = { "fin_pll", "fout_apll", };
PNAME(mout_cpu_p) = { "mout_apll", "mout_mpll", };
@ -882,7 +843,8 @@ static void __init exynos5250_clk_init(struct device_node *np)
PWR_CTRL2_CORE2_UP_RATIO | PWR_CTRL2_CORE1_UP_RATIO);
__raw_writel(tmp, reg_base + PWR_CTRL2);
exynos5250_clk_sleep_init();
samsung_clk_sleep_init(reg_base, exynos5250_clk_regs,
ARRAY_SIZE(exynos5250_clk_regs));
exynos5_subcmus_init(ctx, 1, &exynos5250_disp_subcmu);
samsung_clk_of_add_provider(np, ctx);