ARM: S5PC100: Add SCLK_SPDIF clock

This patch add SCLK_SPDIF clock to support source clock of S/PDIF
on S5PC100.

Signed-off-by: Seungwhan Youn <sw.youn@samsung.com>
Acked-by: Jassi Brar <jassi.brar@samsung.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

1 files changed, 59 insertions, 0 deletions

diff --git a/arch/arm/mach-s5pc100/clock.c b/arch/arm/mach-s5pc100/clock.c
index 42b7138efb1d..306ae743ad72 100644
--- a/arch/arm/mach-s5pc100/clock.c
+++ b/arch/arm/mach-s5pc100/clock.c
@@ -980,6 +980,64 @@ struct clksrc_sources clk_src_pwi = {
         .nr_sources     = ARRAY_SIZE(clk_src_pwi_list),
 };
 
+static struct clk *clk_sclk_spdif_list[] = {
+        [0] = &clk_sclk_audio0.clk,
+        [1] = &clk_sclk_audio1.clk,
+        [2] = &clk_sclk_audio2.clk,
+};
+
+struct clksrc_sources clk_src_sclk_spdif = {
+        .sources        = clk_sclk_spdif_list,
+        .nr_sources     = ARRAY_SIZE(clk_sclk_spdif_list),
+};
+
+static int s5pc100_spdif_set_rate(struct clk *clk, unsigned long rate)
+{
+        struct clk *pclk;
+        int ret;
+
+        pclk = clk_get_parent(clk);
+        if (IS_ERR(pclk))
+                return -EINVAL;
+
+        ret = pclk->ops->set_rate(pclk, rate);
+        clk_put(pclk);
+
+        return ret;
+}
+
+static unsigned long s5pc100_spdif_get_rate(struct clk *clk)
+{
+        struct clk *pclk;
+        int rate;
+
+        pclk = clk_get_parent(clk);
+        if (IS_ERR(pclk))
+                return -EINVAL;
+
+        rate = pclk->ops->get_rate(clk);
+        clk_put(pclk);
+
+        return rate;
+}
+
+static struct clk_ops s5pc100_sclk_spdif_ops = {
+        .set_rate       = s5pc100_spdif_set_rate,
+        .get_rate       = s5pc100_spdif_get_rate,
+};
+
+static struct clksrc_clk clk_sclk_spdif = {
+        .clk    = {
+                .name           = "sclk_spdif",
+                .id             = -1,
+                .ctrlbit        = (1 << 11),
+                .enable         = s5pc100_sclk1_ctrl,
+                .ops            = &s5pc100_sclk_spdif_ops,
+        },
+        .sources = &clk_src_sclk_spdif,
+        .reg_src = { .reg = S5P_CLK_SRC3, .shift = 24, .size = 2 },
+};
+
 static struct clksrc_clk clksrcs[] = {
         {
                 .clk    = {
@@ -1185,6 +1243,7 @@ static struct clksrc_clk *sysclks[] = {
         &clk_sclk_audio0,
         &clk_sclk_audio1,
         &clk_sclk_audio2,
+        &clk_sclk_spdif,
 };
 
 void __init_or_cpufreq s5pc100_setup_clocks(void)