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| author | Sylwester Nawrocki <s.nawrocki@samsung.com> | 2014-07-02 15:40:58 +0200 |
|---|---|---|
| committer | Marek Szyprowski <m.szyprowski@samsung.com> | 2014-07-09 05:19:44 -0700 |
| commit | b11167e0b0c8d94bb452f8db5309517a460aac19 (patch) | |
| tree | 8adaee1d70ac77cc97da0408a2788c715064d97f | |
| parent | b7391de5e8a48cc5fef5b7cc9ce5d854d80619c7 (diff) | |
| download | linux-3.10-b11167e0b0c8d94bb452f8db5309517a460aac19.tar.gz linux-3.10-b11167e0b0c8d94bb452f8db5309517a460aac19.tar.bz2 linux-3.10-b11167e0b0c8d94bb452f8db5309517a460aac19.zip | |
clk: samsung: Add suspend/resume pm ops for audss clk controller
Ensure the Exynos audio subsystem clock controller registers are
preserved across suspend/resume.
Change-Id: I57f4dcbbc9d02f7dfa2cd68508a9cefba010b9e5
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
| -rw-r--r-- | drivers/clk/samsung/clk-exynos4-audss.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/drivers/clk/samsung/clk-exynos4-audss.c b/drivers/clk/samsung/clk-exynos4-audss.c index 4522d000a5b..28c18d03ef9 100644 --- a/drivers/clk/samsung/clk-exynos4-audss.c +++ b/drivers/clk/samsung/clk-exynos4-audss.c @@ -51,22 +51,36 @@ static struct clk_onecell_data clk_data; static void __iomem *io_base; static struct clk *clks[AUDSS_CLK_MAX]; +#ifdef CONFIG_PM_SLEEP +static unsigned long reg_save[][2] = { + { AUDSS_CLKSRC, 0 }, + { AUDSS_CLKDIV, 0 }, + { AUDSS_CLKGATE, 0 }, +}; + static int samsung_audss_clk_suspend(void) { - /* TODO: */ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(reg_save); i++) + reg_save[i][1] = readl(io_base + reg_save[i][0]); + return 0; } static void samsung_audss_clk_resume(void) { - /* TODO: */ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(reg_save); i++) + writel(reg_save[i][1], io_base + reg_save[i][0]); } static struct syscore_ops samsung_audss_clk_syscore_ops = { .suspend = samsung_audss_clk_suspend, .resume = samsung_audss_clk_resume, }; - +#endif /* CONFIG_PM_SLEEP */ #ifdef CONFIG_OF static struct of_device_id audss_of_match[] __initdata = { |