commit a1a0dccaea9e036200dc0b1070af1bfae06690fb
author Semwal, Sumit <sumit.semwal@ti.com> Tue Mar 01 02:42:14 2011 -0600
committer Tomi Valkeinen <tomi.valkeinen@ti.com> Fri Mar 11 15:46:26 2011 +0200
tree df2ab6605e40af63b3187b2f54505124f9f345db
parent fd4b34f60736a20c5acd81cbb3083a0c60ae058e

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>

drivers/video/omap2/dss/dss.c

diff --git a/drivers/video/omap2/dss/dss.c b/drivers/video/omap2/dss/dss.c
index 50c1867..0cf5f8b 100644
--- a/drivers/video/omap2/dss/dss.c
+++ b/drivers/video/omap2/dss/dss.c
@@ -706,6 +706,7 @@
 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 @@
 	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 @@
 {
 	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 @@
 		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 @@
 		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;