ARM: S5PV210: Add SCLK_SPDIF clock

This patch add SCLK_SPDIF clock to support source clock of S/PDIF
on S5PV210.

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>

arch/arm/mach-s5pv210/clock.c

@@ -472,6 +472,12 @@ static struct clk init_clocks_disable[] = {
 		.parent		= &clk_p,
 		.enable		= s5pv210_clk_ip3_ctrl,
 		.ctrlbit	= (1 << 6),
+	}, {
+		.name		= "spdif",
+		.id		= -1,
+		.parent		= &clk_p,
+		.enable		= s5pv210_clk_ip3_ctrl,
+		.ctrlbit	= (1 << 0),
 	},
 };
 
@@ -701,6 +707,53 @@ static struct clksrc_sources clkset_sclk_spdif = {
 	.nr_sources	= ARRAY_SIZE(clkset_sclk_spdif_list),
 };
 
+static int s5pv210_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 s5pv210_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 s5pv210_sclk_spdif_ops = {
+	.set_rate	= s5pv210_spdif_set_rate,
+	.get_rate	= s5pv210_spdif_get_rate,
+};
+
+static struct clksrc_clk clk_sclk_spdif = {
+	.clk		= {
+		.name		= "sclk_spdif",
+		.id		= -1,
+		.enable		= s5pv210_clk_mask0_ctrl,
+		.ctrlbit	= (1 << 27),
+		.ops		= &s5pv210_sclk_spdif_ops,
+	},
+	.sources = &clkset_sclk_spdif,
+	.reg_src = { .reg = S5P_CLK_SRC6, .shift = 12, .size = 2 },
+};
+
 static struct clk *clkset_group2_list[] = {
 	[0] = &clk_ext_xtal_mux,
 	[1] = &clk_xusbxti,
@@ -784,15 +837,6 @@ static struct clksrc_clk clksrcs[] = {
 		},
 		.sources = &clkset_sclk_mixer,
 		.reg_src = { .reg = S5P_CLK_SRC1, .shift = 4, .size = 1 },
-	}, {
-		.clk		= {
-			.name		= "sclk_spdif",
-			.id		= -1,
-			.enable		= s5pv210_clk_mask0_ctrl,
-			.ctrlbit	= (1 << 27),
-		},
-		.sources = &clkset_sclk_spdif,
-		.reg_src = { .reg = S5P_CLK_SRC6, .shift = 12, .size = 2 },
 	}, {
 		.clk	= {
 			.name		= "sclk_fimc",