diff options
author | Tomasz Figa <t.figa@samsung.com> | 2014-02-14 08:16:00 +0900 |
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committer | Kukjin Kim <kgene.kim@samsung.com> | 2014-02-14 08:16:00 +0900 |
commit | c3b6c1d7015a5a19d87725fe22b58aeea9a88f3c (patch) | |
tree | 97992401f059f73262cf568dbe9dced8180f07ef | |
parent | b7b647be157c9503aec9ce3c7d7e86205a6c39dc (diff) | |
download | op-kernel-dev-c3b6c1d7015a5a19d87725fe22b58aeea9a88f3c.zip op-kernel-dev-c3b6c1d7015a5a19d87725fe22b58aeea9a88f3c.tar.gz |
clk: samsung: exynos5250: Move suspend/resume handling to SoC driver
Since there are multiple differences in how suspend/resume of particular
Exynos SoCs must be handled, SoC driver is better place for
suspend/resume handlers and so this patch moves them.
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Thomas Abraham <thomas.ab@samsung.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
-rw-r--r-- | drivers/clk/samsung/clk-exynos5250.c | 49 | ||||
-rw-r--r-- | drivers/clk/samsung/clk.c | 5 | ||||
-rw-r--r-- | drivers/clk/samsung/clk.h | 4 |
3 files changed, 49 insertions, 9 deletions
diff --git a/drivers/clk/samsung/clk-exynos5250.c b/drivers/clk/samsung/clk-exynos5250.c index ff4beeb..b3cccf0 100644 --- a/drivers/clk/samsung/clk-exynos5250.c +++ b/drivers/clk/samsung/clk-exynos5250.c @@ -16,6 +16,7 @@ #include <linux/clk-provider.h> #include <linux/of.h> #include <linux/of_address.h> +#include <linux/syscore_ops.h> #include "clk.h" @@ -85,6 +86,11 @@ enum exynos5250_plls { nr_plls /* number of 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. @@ -137,6 +143,41 @@ static unsigned long exynos5250_clk_regs[] __initdata = { GATE_IP_ACP, }; +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 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 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", }; @@ -645,8 +686,6 @@ static struct of_device_id ext_clk_match[] __initdata = { /* register exynox5250 clocks */ static void __init exynos5250_clk_init(struct device_node *np) { - void __iomem *reg_base; - if (np) { reg_base = of_iomap(np, 0); if (!reg_base) @@ -655,9 +694,7 @@ static void __init exynos5250_clk_init(struct device_node *np) panic("%s: unable to determine soc\n", __func__); } - samsung_clk_init(np, reg_base, CLK_NR_CLKS, - exynos5250_clk_regs, ARRAY_SIZE(exynos5250_clk_regs), - NULL, 0); + samsung_clk_init(np, reg_base, CLK_NR_CLKS, NULL, 0, NULL, 0); samsung_clk_of_register_fixed_ext(exynos5250_fixed_rate_ext_clks, ARRAY_SIZE(exynos5250_fixed_rate_ext_clks), ext_clk_match); @@ -685,6 +722,8 @@ static void __init exynos5250_clk_init(struct device_node *np) samsung_clk_register_gate(exynos5250_gate_clks, ARRAY_SIZE(exynos5250_gate_clks)); + exynos5250_clk_sleep_init(); + pr_info("Exynos5250: clock setup completed, armclk=%ld\n", _get_rate("div_arm2")); } diff --git a/drivers/clk/samsung/clk.c b/drivers/clk/samsung/clk.c index c0a716b..ec761e3 100644 --- a/drivers/clk/samsung/clk.c +++ b/drivers/clk/samsung/clk.c @@ -38,8 +38,9 @@ void samsung_clk_restore(void __iomem *base, writel(rd->value, base + rd->offset); } -struct samsung_clk_reg_dump *samsung_clk_alloc_reg_dump(unsigned long *rdump, - unsigned long nr_rdump) +struct samsung_clk_reg_dump *samsung_clk_alloc_reg_dump( + const unsigned long *rdump, + unsigned long nr_rdump) { struct samsung_clk_reg_dump *rd; unsigned int i; diff --git a/drivers/clk/samsung/clk.h b/drivers/clk/samsung/clk.h index ec8d46b..93cb8a0 100644 --- a/drivers/clk/samsung/clk.h +++ b/drivers/clk/samsung/clk.h @@ -347,7 +347,7 @@ extern void samsung_clk_restore(void __iomem *base, const struct samsung_clk_reg_dump *rd, unsigned int num_regs); extern struct samsung_clk_reg_dump *samsung_clk_alloc_reg_dump( - unsigned long *rdump, - unsigned long nr_rdump); + const unsigned long *rdump, + unsigned long nr_rdump); #endif /* __SAMSUNG_CLK_H */ |