Hi Jean Christophe,
On Mon, Jun 24, 2013 at 04:26:45PM +0200, Jean-Christophe PLAGNIOL-VILLARD
wrote:
> On 20:27 Fri 21 Jun , Alexandre Belloni wrote:
> > From: Maxime Ripard <maxime.rip...@free-electrons.com>
> >
> > Signed-off-by: Alexandre Belloni <alexandre.bell...@free-electrons.com>
> > Signed-off-by: Maxime Ripard <maxime.rip...@free-electrons.com>
> > ---
> > drivers/video/backlight/hx8357.c | 53
> > +++++++++++++++++++++++-----------------
> > 1 file changed, 31 insertions(+), 22 deletions(-)
> >
> > diff --git a/drivers/video/backlight/hx8357.c
> > b/drivers/video/backlight/hx8357.c
> > index a0482b5..69f5672 100644
> > --- a/drivers/video/backlight/hx8357.c
> > +++ b/drivers/video/backlight/hx8357.c
> > @@ -76,6 +76,7 @@ struct hx8357_data {
> > unsigned reset;
> > struct spi_device *spi;
> > int state;
> > + u8 use_im_pins;
> boolean please
Ok.
> > };
> >
> > 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?
--
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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