fbdev: sh_mipi_dsi: add set_dot_clock() for each platform

Dot clock of SH MIPI are depends on each platform board.
This patch adds set_dot_clock() function for it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

1 files changed, 25 insertions, 0 deletions

diff --git a/arch/arm/mach-shmobile/board-ap4evb.c b/arch/arm/mach-shmobile/board-ap4evb.c
index b2e32c8c9e54..73503ed8bde2 100644
--- a/arch/arm/mach-shmobile/board-ap4evb.c
+++ b/arch/arm/mach-shmobile/board-ap4evb.c
@@ -564,6 +564,30 @@ static struct platform_device keysc_device = {
 };
 
 /* MIPI-DSI */
+#define PHYCTRL         0x0070
+static int sh_mipi_set_dot_clock(struct platform_device *pdev,
+                                 void __iomem *base,
+                                 int enable)
+{
+        struct clk *pck = clk_get(&pdev->dev, "dsip_clk");
+        void __iomem *phy =  base + PHYCTRL;
+
+        if (IS_ERR(pck))
+                return PTR_ERR(pck);
+
+        if (enable) {
+                clk_set_rate(pck, clk_round_rate(pck, 24000000));
+                iowrite32(ioread32(phy) | (0xb << 8), phy);
+                clk_enable(pck);
+        } else {
+                clk_disable(pck);
+        }
+
+        clk_put(pck);
+
+        return 0;
+}
+
 static struct resource mipidsi0_resources[] = {
         [0] = {
                 .start  = 0xffc60000,
@@ -583,6 +607,7 @@ static struct sh_mipi_dsi_info mipidsi0_info = {
         .lane           = 2,
         .vsynw_offset   = 17,
         .flags          = SH_MIPI_DSI_SYNC_PULSES_MODE,
+        .set_dot_clock  = sh_mipi_set_dot_clock,
 };
 
 static struct platform_device mipidsi0_device = {