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clk: samsung: exynos5420: 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>
Signed-off-by: Sylwester Nawrocki <snawrocki@kernel.org>
This commit is contained in:
Marek Szyprowski 2018-09-06 17:55:32 +02:00 committed by Sylwester Nawrocki
parent 9a4d8a8c4d
commit 2d77f77c0a
1 changed files with 6 additions and 66 deletions
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72
drivers/clk/samsung/clk-exynos5420.c
View File

@ -15,7 +15,6 @@
#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"
@ -156,10 +155,6 @@ enum exynos5x_plls {
static void __iomem *reg_base;
static enum exynos5x_soc exynos5x_soc;
#ifdef CONFIG_PM_SLEEP
static struct samsung_clk_reg_dump *exynos5x_save;
static struct samsung_clk_reg_dump *exynos5800_save;
/*
* list of controller registers to be saved and restored during a
* suspend/resume cycle.
@ -283,66 +278,6 @@ static const struct samsung_clk_reg_dump exynos5420_set_clksrc[] = {
{ .offset = GATE_IP_PERIC, .value = 0xffffffff, },
};
static int exynos5420_clk_suspend(void)
{
samsung_clk_save(reg_base, exynos5x_save,
ARRAY_SIZE(exynos5x_clk_regs));
if (exynos5x_soc == EXYNOS5800)
samsung_clk_save(reg_base, exynos5800_save,
ARRAY_SIZE(exynos5800_clk_regs));
samsung_clk_restore(reg_base, exynos5420_set_clksrc,
ARRAY_SIZE(exynos5420_set_clksrc));
return 0;
}
static void exynos5420_clk_resume(void)
{
samsung_clk_restore(reg_base, exynos5x_save,
ARRAY_SIZE(exynos5x_clk_regs));
if (exynos5x_soc == EXYNOS5800)
samsung_clk_restore(reg_base, exynos5800_save,
ARRAY_SIZE(exynos5800_clk_regs));
}
static struct syscore_ops exynos5420_clk_syscore_ops = {
.suspend = exynos5420_clk_suspend,
.resume = exynos5420_clk_resume,
};
static void __init exynos5420_clk_sleep_init(void)
{
exynos5x_save = samsung_clk_alloc_reg_dump(exynos5x_clk_regs,
ARRAY_SIZE(exynos5x_clk_regs));
if (!exynos5x_save) {
pr_warn("%s: failed to allocate sleep save data, no sleep support!\n",
__func__);
return;
}
if (exynos5x_soc == EXYNOS5800) {
exynos5800_save =
samsung_clk_alloc_reg_dump(exynos5800_clk_regs,
ARRAY_SIZE(exynos5800_clk_regs));
if (!exynos5800_save)
goto err_soc;
}
register_syscore_ops(&exynos5420_clk_syscore_ops);
return;
err_soc:
kfree(exynos5x_save);
pr_warn("%s: failed to allocate sleep save data, no sleep support!\n",
__func__);
return;
}
#else
static void __init exynos5420_clk_sleep_init(void) {}
#endif
/* list of all parent clocks */
PNAME(mout_mspll_cpu_p) = {"mout_sclk_cpll", "mout_sclk_dpll",
"mout_sclk_mpll", "mout_sclk_spll"};
@ -1540,7 +1475,12 @@ static void __init exynos5x_clk_init(struct device_node *np,
mout_kfc_p[0], mout_kfc_p[1], 0x28200,
exynos5420_kfcclk_d, ARRAY_SIZE(exynos5420_kfcclk_d), 0);
exynos5420_clk_sleep_init();
samsung_clk_extended_sleep_init(reg_base,
exynos5x_clk_regs, ARRAY_SIZE(exynos5x_clk_regs),
exynos5420_set_clksrc, ARRAY_SIZE(exynos5420_set_clksrc));
if (soc == EXYNOS5800)
samsung_clk_sleep_init(reg_base, exynos5800_clk_regs,
ARRAY_SIZE(exynos5800_clk_regs));
exynos5_subcmus_init(ctx, ARRAY_SIZE(exynos5x_subcmus),
exynos5x_subcmus);