OMAP2PLUS:DSS2: Use opt_clock_available from pdata

hwmod databases provide information about which optional clocks are available
for a given platform. This is available via a function pointer opt_clock_enable
in pdata.

Use this information during get/enable/disable/put of clocks.

Signed-off-by: Sumit Semwal <sumit.semwal@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

diff --git a/drivers/video/omap2/dss/dss.c b/drivers/video/omap2/dss/dss.c
index 50c18677684d3943e6b6ef90211a96f0012216ca..0cf5f8bd1c8a0cfa1b9e1664644c16df050b234f 100644 (file)
--- a/drivers/video/omap2/dss/dss.c
+++ b/drivers/video/omap2/dss/dss.c
@@ -706,6 +706,7 @@ static int dss_get_clock(struct clk **clock, const char *clk_name)
 static int dss_get_clocks(void)
 {
        int r;
+       struct omap_display_platform_data *pdata = dss.pdev->dev.platform_data;
 
        dss.dss_ick = NULL;
        dss.dss_fck = NULL;
@@ -721,17 +722,28 @@ static int dss_get_clocks(void)
        if (r)
                goto err;
 
-       r = dss_get_clock(&dss.dss_sys_clk, "sys_clk");
-       if (r)
+       if (!pdata->opt_clock_available) {
+               r = -ENODEV;
                goto err;
+       }
 
-       r = dss_get_clock(&dss.dss_tv_fck, "tv_clk");
-       if (r)
-               goto err;
+       if (pdata->opt_clock_available("sys_clk")) {
+               r = dss_get_clock(&dss.dss_sys_clk, "sys_clk");
+               if (r)
+                       goto err;
+       }
 
-       r = dss_get_clock(&dss.dss_video_fck, "video_clk");
-       if (r)
-               goto err;
+       if (pdata->opt_clock_available("tv_clk")) {
+               r = dss_get_clock(&dss.dss_tv_fck, "tv_clk");
+               if (r)
+                       goto err;
+       }
+
+       if (pdata->opt_clock_available("video_clk")) {
+               r = dss_get_clock(&dss.dss_video_fck, "video_clk");
+               if (r)
+                       goto err;
+       }
 
        return 0;
 
@@ -754,9 +766,11 @@ static void dss_put_clocks(void)
 {
        if (dss.dss_video_fck)
                clk_put(dss.dss_video_fck);
-       clk_put(dss.dss_tv_fck);
+       if (dss.dss_tv_fck)
+               clk_put(dss.dss_tv_fck);
+       if (dss.dss_sys_clk)
+               clk_put(dss.dss_sys_clk);
        clk_put(dss.dss_fck);
-       clk_put(dss.dss_sys_clk);
        clk_put(dss.dss_ick);
 }
 
@@ -805,11 +819,11 @@ static void dss_clk_enable_no_ctx(enum dss_clock clks)
                clk_enable(dss.dss_ick);
        if (clks & DSS_CLK_FCK)
                clk_enable(dss.dss_fck);
-       if (clks & DSS_CLK_SYSCK)
+       if ((clks & DSS_CLK_SYSCK) && dss.dss_sys_clk)
                clk_enable(dss.dss_sys_clk);
-       if (clks & DSS_CLK_TVFCK)
+       if ((clks & DSS_CLK_TVFCK) && dss.dss_tv_fck)
                clk_enable(dss.dss_tv_fck);
-       if (clks & DSS_CLK_VIDFCK)
+       if ((clks & DSS_CLK_VIDFCK) && dss.dss_video_fck)
                clk_enable(dss.dss_video_fck);
 
        dss.num_clks_enabled += num_clks;
@@ -833,11 +847,11 @@ static void dss_clk_disable_no_ctx(enum dss_clock clks)
                clk_disable(dss.dss_ick);
        if (clks & DSS_CLK_FCK)
                clk_disable(dss.dss_fck);
-       if (clks & DSS_CLK_SYSCK)
+       if ((clks & DSS_CLK_SYSCK) && dss.dss_sys_clk)
                clk_disable(dss.dss_sys_clk);
-       if (clks & DSS_CLK_TVFCK)
+       if ((clks & DSS_CLK_TVFCK) && dss.dss_tv_fck)
                clk_disable(dss.dss_tv_fck);
-       if (clks & DSS_CLK_VIDFCK)
+       if ((clks & DSS_CLK_VIDFCK) && dss.dss_video_fck)
                clk_disable(dss.dss_video_fck);
 
        dss.num_clks_enabled -= num_clks;