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sh: sh_mobile lcdc clock framework support

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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>
This commit is contained in:
Magnus Damm 2008-10-31 20:23:26 +09:00 committed by Paul Mundt
parent 765786e0ae
commit b51339fff2
3 changed files with 33 additions and 15 deletions
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1
arch/sh/boards/board-ap325rxa.c
View File

@ -345,7 +345,6 @@ static int __init ap325rxa_devices_setup(void)
gpio_export(GPIO_PTF7, 0);
/* LCDC */
clk_always_enable("mstp200");
gpio_request(GPIO_FN_LCDD15, NULL);
gpio_request(GPIO_FN_LCDD14, NULL);
gpio_request(GPIO_FN_LCDD13, NULL);

1
arch/sh/boards/mach-migor/setup.c
View File

@ -502,7 +502,6 @@ static int __init migor_devices_setup(void)
gpio_request(GPIO_FN_IRQ6, NULL);
/* LCD Panel */
clk_always_enable("mstp200"); /* LCDC */
#ifdef CONFIG_SH_MIGOR_QVGA /* LCDC - QVGA - Enable SYS Interface signals */
gpio_request(GPIO_FN_LCDD17, NULL);
gpio_request(GPIO_FN_LCDD16, NULL);

46
drivers/video/sh_mobile_lcdcfb.c
View File

@ -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)