[PATCH 4/4] mach-s5pv210: Add MIPI-CSI DPHY clock definition

[Sylwester Nawrocki]

MIPI DPHY control register requires special handling since
it is shared between CSI (camera serial interface) and DSI
(display serial interface). By creating this clock
a serialized interface is provided for mipi-csi and mipi-dsi
drivers, so DPHYs may be safely controlled by both drivers.
Similarly dsim_dphy clock could be added for mipi-dsim.

---

I am not quite sure about "csis_dphy" clock, perhaps power domain
handling code would better place for MIPI DPHY control.

Signed-off-by: Sylwester Nawrocki <s.nawrocki at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
---
 arch/arm/mach-s5pv210/clock.c |   25 +++++++++++++++++++++++++
 1 files changed, 25 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-s5pv210/clock.c b/arch/arm/mach-s5pv210/clock.c
index 019c3a6..14e42ca 100644
--- a/arch/arm/mach-s5pv210/clock.c
+++ b/arch/arm/mach-s5pv210/clock.c
@@ -185,6 +185,19 @@ static int s5pv210_clk_mask1_ctrl(struct clk *clk, int enable)
 	return s5p_gatectrl(S5P_CLK_SRC_MASK1, clk, enable);
 }
 
+static int s5pv210_clk_mipi_dphy_ctrl(struct clk *clk, int enable)
+{
+	return s5p_gatectrl(S5P_MIPI_DPHY_CONTROL, clk, enable);
+}
+
+/* The common parent clock for mipi-csi/dsi clocks. */
+static struct clk clk_vp_mipi_dphy = {
+	.name		= "vpclk_csis_dphy",
+	.id		= -1,
+	.enable		= s5pv210_clk_mipi_dphy_ctrl,
+	.ctrlbit	= (1 << 0),
+};
+
 static struct clk clk_sclk_hdmi27m = {
 	.name		= "sclk_hdmi27m",
 	.id		= -1,
@@ -323,6 +336,18 @@ static struct clk init_clocks_disable[] = {
 		.enable		= s5pv210_clk_ip0_ctrl,
 		.ctrlbit	= (1 << 4),
 	}, {
+		.name		= "csis",
+		.id		= -1,
+		.parent		= &clk_pclk_dsys.clk,
+		.enable		= s5pv210_clk_ip0_ctrl,
+		.ctrlbit	= (1 << 31),
+	}, {
+		.name		= "csis_dphy",
+		.id		= -1,
+		.parent		= &clk_vp_mipi_dphy,
+		.enable		= s5pv210_clk_mipi_dphy_ctrl,
+		.ctrlbit	= (1 << 1),
+	}, {
 		.name		= "rot",
 		.id		= -1,
 		.parent		= &clk_hclk_dsys.clk,
-- 
1.7.1