diff options
| author | Alexander Stein <alexander.stein@systec-electronic.com> | 2014-07-15 14:33:25 +0200 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2014-09-30 14:44:06 +0300 |
| commit | 2d605456431343886bc073ea126aeb7c64e07a57 (patch) | |
| tree | 17d7d68df8991251c83b4db4c71fd2fb5788c416 /drivers/video | |
| parent | a00d91ea264f974b3d57babce143ba157921629a (diff) | |
video/atmel_lcdfb: Introduce regulator support
This adds regulator support to enable/disable the LCD voltage, using
'lcd-supply' as regulator name.
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/fbdev/atmel_lcdfb.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/video/fbdev/atmel_lcdfb.c b/drivers/video/fbdev/atmel_lcdfb.c index 92640d46770a..10d038029d67 100644 --- a/drivers/video/fbdev/atmel_lcdfb.c +++ b/drivers/video/fbdev/atmel_lcdfb.c @@ -24,6 +24,7 @@ #include <linux/of_device.h> #include <linux/of_gpio.h> #include <video/of_display_timing.h> +#include <linux/regulator/consumer.h> #include <video/videomode.h> #include <mach/cpu.h> @@ -60,6 +61,7 @@ struct atmel_lcdfb_info { struct atmel_lcdfb_pdata pdata; struct atmel_lcdfb_config *config; + struct regulator *reg_lcd; }; struct atmel_lcdfb_power_ctrl_gpio { @@ -302,10 +304,24 @@ static void init_contrast(struct atmel_lcdfb_info *sinfo) static inline void atmel_lcdfb_power_control(struct atmel_lcdfb_info *sinfo, int on) { + int ret; struct atmel_lcdfb_pdata *pdata = &sinfo->pdata; if (pdata->atmel_lcdfb_power_control) pdata->atmel_lcdfb_power_control(pdata, on); + else if (sinfo->reg_lcd) { + if (on) { + ret = regulator_enable(sinfo->reg_lcd); + if (ret) + dev_err(&sinfo->pdev->dev, + "lcd regulator enable failed: %d\n", ret); + } else { + ret = regulator_disable(sinfo->reg_lcd); + if (ret) + dev_err(&sinfo->pdev->dev, + "lcd regulator disable failed: %d\n", ret); + } + } } static struct fb_fix_screeninfo atmel_lcdfb_fix __initdata = { @@ -1193,6 +1209,10 @@ static int __init atmel_lcdfb_probe(struct platform_device *pdev) if (!sinfo->config) goto free_info; + sinfo->reg_lcd = devm_regulator_get(&pdev->dev, "lcd"); + if (IS_ERR(sinfo->reg_lcd)) + sinfo->reg_lcd = NULL; + info->flags = ATMEL_LCDFB_FBINFO_DEFAULT; info->pseudo_palette = sinfo->pseudo_palette; info->fbops = &atmel_lcdfb_ops; |