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authorMagnus Damm <damm@igel.co.jp>2008-10-31 20:23:26 +0900
committerPaul Mundt <lethal@linux-sh.org>2008-12-22 18:42:52 +0900
commitb51339fff240ff179730f8963a758147fd60f3ec (patch)
tree745058a3e57b019437c5df2ab3de8b4dd5dca958 /drivers/video
parent765786e0aead7faf6c333176d22948c6f155fff1 (diff)
downloadop-kernel-dev-b51339fff240ff179730f8963a758147fd60f3ec.zip
op-kernel-dev-b51339fff240ff179730f8963a758147fd60f3ec.tar.gz
sh: sh_mobile lcdc clock framework support
Add clock framework support to the lcdc driver and adjust the board specific code accordingly. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/sh_mobile_lcdcfb.c46
1 files changed, 33 insertions, 13 deletions
diff --git a/drivers/video/sh_mobile_lcdcfb.c b/drivers/video/sh_mobile_lcdcfb.c
index efff672..c81ee00 100644
--- a/drivers/video/sh_mobile_lcdcfb.c
+++ b/drivers/video/sh_mobile_lcdcfb.c
@@ -35,6 +35,7 @@ struct sh_mobile_lcdc_chan {
struct sh_mobile_lcdc_priv {
void __iomem *base;
#ifdef CONFIG_HAVE_CLK
+ struct clk *dot_clk;
struct clk *clk;
#endif
unsigned long lddckr;
@@ -207,6 +208,11 @@ static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv)
int k, m;
int ret = 0;
+#ifdef CONFIG_HAVE_CLK
+ clk_enable(priv->clk);
+ if (priv->dot_clk)
+ clk_enable(priv->dot_clk);
+#endif
/* reset */
lcdc_write(priv, _LDCNT2R, lcdc_read(priv, _LDCNT2R) | LCDC_RESET);
lcdc_wait_bit(priv, _LDCNT2R, LCDC_RESET, 0);
@@ -371,6 +377,12 @@ static void sh_mobile_lcdc_stop(struct sh_mobile_lcdc_priv *priv)
/* stop the lcdc */
sh_mobile_lcdc_start_stop(priv, 0);
+
+#ifdef CONFIG_HAVE_CLK
+ if (priv->dot_clk)
+ clk_disable(priv->dot_clk);
+ clk_disable(priv->clk);
+#endif
}
static int sh_mobile_lcdc_check_interface(struct sh_mobile_lcdc_chan *ch)
@@ -413,9 +425,13 @@ static int sh_mobile_lcdc_check_interface(struct sh_mobile_lcdc_chan *ch)
return -EINVAL;
}
-static int sh_mobile_lcdc_setup_clocks(struct device *dev, int clock_source,
+static int sh_mobile_lcdc_setup_clocks(struct platform_device *pdev,
+ int clock_source,
struct sh_mobile_lcdc_priv *priv)
{
+#ifdef CONFIG_HAVE_CLK
+ char clk_name[8];
+#endif
char *str;
int icksel;
@@ -430,14 +446,20 @@ static int sh_mobile_lcdc_setup_clocks(struct device *dev, int clock_source,
priv->lddckr = icksel << 16;
#ifdef CONFIG_HAVE_CLK
+ snprintf(clk_name, sizeof(clk_name), "lcdc%d", pdev->id);
+ priv->clk = clk_get(&pdev->dev, clk_name);
+ if (IS_ERR(priv->clk)) {
+ dev_err(&pdev->dev, "cannot get clock \"%s\"\n", clk_name);
+ return PTR_ERR(priv->clk);
+ }
+
if (str) {
- priv->clk = clk_get(dev, str);
- if (IS_ERR(priv->clk)) {
- dev_err(dev, "cannot get clock %s\n", str);
- return PTR_ERR(priv->clk);
+ priv->dot_clk = clk_get(&pdev->dev, str);
+ if (IS_ERR(priv->dot_clk)) {
+ dev_err(&pdev->dev, "cannot get dot clock %s\n", str);
+ clk_put(priv->clk);
+ return PTR_ERR(priv->dot_clk);
}
-
- clk_enable(priv->clk);
}
#endif
@@ -587,8 +609,7 @@ static int __init sh_mobile_lcdc_probe(struct platform_device *pdev)
goto err1;
}
- error = sh_mobile_lcdc_setup_clocks(&pdev->dev,
- pdata->clock_source, priv);
+ error = sh_mobile_lcdc_setup_clocks(pdev, pdata->clock_source, priv);
if (error) {
dev_err(&pdev->dev, "unable to setup clocks\n");
goto err1;
@@ -697,10 +718,9 @@ static int sh_mobile_lcdc_remove(struct platform_device *pdev)
}
#ifdef CONFIG_HAVE_CLK
- if (priv->clk) {
- clk_disable(priv->clk);
- clk_put(priv->clk);
- }
+ if (priv->dot_clk)
+ clk_put(priv->dot_clk);
+ clk_put(priv->clk);
#endif
if (priv->base)
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