Hi Lars-Peter,
On Monday 26 November 2012 11:44:04 Lars-Peter Clausen wrote:
> On 11/26/2012 10:49 AM, Jingoo Han wrote:
> > On Saturday, November 24, 2012 1:35 AM, Laurent Pinchart wrote
>
> [...]
>
> >> +static int gpio_backlight_check_fb(struct backlight_device *bl,
> >> + struct fb_info *info)
> >> +{
> >> + struct gpio_backlight *gbl = bl_get_data(bl);
> >> +
> >> + return gbl->fbdev == info->dev;
>
> I think it makes sense to return true if fbdev is NULL, to provide a simple
> fallback for systems with only one framebuffer device.
Agreed, I'll change that.
> >> +}
> >> +
>
> [...]
>
> >> +#ifdef CONFIG_PM
> >> +static int gpio_backlight_suspend(struct device *dev)
> >> +{
> >> + struct backlight_device *bl = dev_get_drvdata(dev);
> >> + struct gpio_backlight *gbl = bl_get_data(bl);
> >> +
> >> + gpio_set_value(gbl->gpio, !gbl->active);
> >> +
> >> + return 0;
> >> +}
> >> +
> >> +static int gpio_backlight_resume(struct device *dev)
> >> +{
> >> + struct backlight_device *bl = dev_get_drvdata(dev);
> >> +
> >> + backlight_update_status(bl);
> >> + return 0;
> >> +}
>
> If you use BL_CORE_SUSPENDRESUME you can get rid of the custom
> suspend/resume handlers.
Good point, I'll do that.
> >> +
> >> +static SIMPLE_DEV_PM_OPS(gpio_backlight_pm_ops, gpio_backlight_suspend,
> >> + gpio_backlight_resume);
> >> +
> >> +#endif
> >> +
--
Regards,
Laurent Pinchart
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