[PATCH v2 2/5] Add basic HP iPAQ rx1950 support

[Vasily Khoruzhick]

В сообщении от 27 сентября 2009 09:18:02 автор Ben Dooks написал:
 
> > +static int rx1950_backlight_notify(int brightness)
> > +{
> > +	static int disabled = 1;
> > +	if (!brightness) {
> > +		if (!disabled) {
> > +			s3c2410_gpio_setpin(S3C2410_GPB(0), 0);
> > +			s3c2410_gpio_pullup(S3C2410_GPB(0), 0);
> > +			s3c2410_gpio_cfgpin(S3C2410_GPB(0),
> > +				S3C2410_GPIO_OUTPUT);
> > +		}
> > +		disabled = 1;
> > +	} else {
> > +		if (disabled) {
> > +			/* LED driver need a "push" to power on */
> > +			s3c2410_gpio_setpin(S3C2410_GPB(0), 1);
> > +			s3c2410_gpio_pullup(S3C2410_GPB(0), 1);
> > +			/* Warm up backlight for one period of PWM.
> > +			 * Without this trick its almost impossible to
> > +			 * enable backlight
> > +			 */
> > +			ndelay(48000);
> > +			s3c2410_gpio_cfgpin(S3C2410_GPB(0),
> > +				S3C2410_GPB0_TOUT0);
> > +		}
> > +		disabled = 0;
> > +	}
> > +	return brightness;
> > +}
> 
> Maybe this is something that should be done in the pwm-bl driver?

Nope, it's device specific. Btw, all this code will be moved into platform 
driver that controls LCD and backlight power in future.

> > +	/* Configuring udc pullup */
> > +	s3c2410_gpio_cfgpin(S3C2440_GPJ5, S3C2410_GPIO_OUTPUT);
> 
> please use gpiolib interface, we're moving away from specific gpio set
> interface.

I'd like to, but gpiolib interface doesn't support GPJ port :(
  
Thanks for review!

Regards
Vasily
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