omap3isp: Set cam_mclk rate directly

Now that the cam_mclk rate changes are back-propagated to dpll4_m5_ck we
can set the cam_mclk rate directly instead of manually setting the rate
of the parent clock.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Mike Turquette <mturquette@linaro.org>
Acked-by: Sakari Ailus <sakari.ailus@iki.fi>
Tested-by: Sakari Ailus <sakari.ailus@iki.fi>

2 files changed, 5 insertions, 21 deletions

diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c
index e4aaee91201d..e7f5da0296f0 100644
--- a/drivers/media/platform/omap3isp/isp.c
+++ b/drivers/media/platform/omap3isp/isp.c
@@ -1338,28 +1338,15 @@ static int isp_enable_clocks(struct isp_device *isp)
 {
         int r;
         unsigned long rate;
-        int divisor;
-
-        /*
-         * cam_mclk clock chain:
-         *   dpll4 -> dpll4_m5 -> dpll4_m5x2 -> cam_mclk
-         *
-         * In OMAP3630 dpll4_m5x2 != 2 x dpll4_m5 but both are
-         * set to the same value. Hence the rate set for dpll4_m5
-         * has to be twice of what is set on OMAP3430 to get
-         * the required value for cam_mclk
-         */
-        divisor = isp->revision == ISP_REVISION_15_0 ? 1 : 2;
 
         r = clk_prepare_enable(isp->clock[ISP_CLK_CAM_ICK]);
         if (r) {
                 dev_err(isp->dev, "failed to enable cam_ick clock\n");
                 goto out_clk_enable_ick;
         }
-        r = clk_set_rate(isp->clock[ISP_CLK_DPLL4_M5_CK],
-                         CM_CAM_MCLK_HZ/divisor);
+        r = clk_set_rate(isp->clock[ISP_CLK_CAM_MCLK], CM_CAM_MCLK_HZ);
         if (r) {
-                dev_err(isp->dev, "clk_set_rate for dpll4_m5_ck failed\n");
+                dev_err(isp->dev, "clk_set_rate for cam_mclk failed\n");
                 goto out_clk_enable_mclk;
         }
         r = clk_prepare_enable(isp->clock[ISP_CLK_CAM_MCLK]);
@@ -1401,7 +1388,6 @@ static void isp_disable_clocks(struct isp_device *isp)
 static const char *isp_clocks[] = {
         "cam_ick",
         "cam_mclk",
-        "dpll4_m5_ck",
         "csi2_96m_fck",
         "l3_ick",
 };
diff --git a/drivers/media/platform/omap3isp/isp.h b/drivers/media/platform/omap3isp/isp.h
index 517d348ce32b..c77e1f2ae5ca 100644
--- a/drivers/media/platform/omap3isp/isp.h
+++ b/drivers/media/platform/omap3isp/isp.h
@@ -147,7 +147,6 @@ struct isp_platform_callback {
  * @ref_count: Reference count for handling multiple ISP requests.
  * @cam_ick: Pointer to camera interface clock structure.
  * @cam_mclk: Pointer to camera functional clock structure.
- * @dpll4_m5_ck: Pointer to DPLL4 M5 clock structure.
  * @csi2_fck: Pointer to camera CSI2 complexIO clock structure.
  * @l3_ick: Pointer to OMAP3 L3 bus interface clock.
  * @irq: Currently attached ISP ISR callbacks information structure.
@@ -189,10 +188,9 @@ struct isp_device {
         u32 xclk_divisor[2];    /* Two clocks, a and b. */
 #define ISP_CLK_CAM_ICK         0
 #define ISP_CLK_CAM_MCLK        1
-#define ISP_CLK_DPLL4_M5_CK     2
-#define ISP_CLK_CSI2_FCK        3
-#define ISP_CLK_L3_ICK          4
-        struct clk *clock[5];
+#define ISP_CLK_CSI2_FCK        2
+#define ISP_CLK_L3_ICK          3
+        struct clk *clock[4];
 
         /* ISP modules */
         struct ispstat isp_af;