# Re: \[PATCH 1/2\] fb: backlight: HX8357: Make IM pins optionnal

- From: Maxime Ripard \<hidden\>
- Date: 2013-07-12 09:11:29 
- List: linux-fbdev
- Page: https://ratatoskr.run/linux-fbdev/2013/07/4081184
- Thread: https://ratatoskr.run/linux-fbdev/2013/06/4071078/t.md

```text
On Tue, Jun 25, 2013 at 03:50:15PM +0200, Maxime Ripard wrote:
> > >  };
> > >  
> > >  static u8 hx8357_seq_power[] = {
> > > @@ -250,9 +251,11 @@ static int hx8357_lcd_init(struct lcd_device *lcdev)
> > >  	 * Set the interface selection pins to SPI mode, with three
> > >  	 * wires
> > >  	 */
> > > -	gpio_set_value_cansleep(lcd->im_pins[0], 1);
> > > -	gpio_set_value_cansleep(lcd->im_pins[1], 0);
> > > -	gpio_set_value_cansleep(lcd->im_pins[2], 1);
> > > +	if (lcd->use_im_pins) {
> > > +		gpio_set_value_cansleep(lcd->im_pins[0], 1);
> > > +		gpio_set_value_cansleep(lcd->im_pins[1], 0);
> > > +		gpio_set_value_cansleep(lcd->im_pins[2], 1);
> > > +	}
> > 
> > base on the dt probe you may have gpios betwee 0 to HX8357_NUM_IM_PINS
> > 
> > so this look wrong
> 
> How so?
> 
> HX8357_NUM_IM_PINS is defined to 3, the probe checks to see if we
> actually have HX8357_NUM_IM_PINS, otherwise returns an error, what is
> wrong in setting these pins here?

Ping?

I'd really like to get this merged, could you clarify what you want?

Thanks,
Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
```

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