On Fri, Sep 13, 2013 at 10:32:40AM +0200, Linus Walleij wrote: > Request and free the GPIO line used for the beeper properly. > Then use the gpiolib API to flip the output of the GPIO pin > instead of relying on hacks to poke the register bits. > > Cc: Imre Kaloz <[email protected]> > Cc: Krzysztof Halasa <[email protected]> > Cc: Alexandre Courbot <[email protected]> > Cc: Dmitry Torokhov <[email protected]> > Acked-by: Arnd Bergmann <[email protected]> > Signed-off-by: Linus Walleij <[email protected]>
Acked-by: Dmitry Torokhov <[email protected]> > --- > Hi Dmitry, requesting an ACK for this to take it through the > GPIO tree as part of an IXP4 clean-up attempt. > > ChangeLog v1->v2: > - Invert using the bang ! instead of XOR ~ > --- > drivers/input/misc/ixp4xx-beeper.c | 13 +++++++++++-- > 1 file changed, 11 insertions(+), 2 deletions(-) > > diff --git a/drivers/input/misc/ixp4xx-beeper.c > b/drivers/input/misc/ixp4xx-beeper.c > index f14afd0..17ccba8 100644 > --- a/drivers/input/misc/ixp4xx-beeper.c > +++ b/drivers/input/misc/ixp4xx-beeper.c > @@ -76,11 +76,13 @@ static int ixp4xx_spkr_event(struct input_dev *dev, > unsigned int type, unsigned > > static irqreturn_t ixp4xx_spkr_interrupt(int irq, void *dev_id) > { > + unsigned int pin = (unsigned int) dev_id; > + > /* clear interrupt */ > *IXP4XX_OSST = IXP4XX_OSST_TIMER_2_PEND; > > /* flip the beeper output */ > - *IXP4XX_GPIO_GPOUTR ^= (1 << (unsigned int) dev_id); > + gpio_set_value(pin, !gpio_get_value(pin)); > > return IRQ_HANDLED; > } > @@ -108,11 +110,15 @@ static int ixp4xx_spkr_probe(struct platform_device > *dev) > input_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE); > input_dev->event = ixp4xx_spkr_event; > > + err = gpio_request(dev->id, "ixp4-beeper"); > + if (err) > + goto err_free_device; > + > err = request_irq(IRQ_IXP4XX_TIMER2, &ixp4xx_spkr_interrupt, > IRQF_NO_SUSPEND, "ixp4xx-beeper", > (void *) dev->id); > if (err) > - goto err_free_device; > + goto err_free_gpio; > > err = input_register_device(input_dev); > if (err) > @@ -124,6 +130,8 @@ static int ixp4xx_spkr_probe(struct platform_device *dev) > > err_free_irq: > free_irq(IRQ_IXP4XX_TIMER2, (void *)dev->id); > + err_free_gpio: > + gpio_free(dev->id); > err_free_device: > input_free_device(input_dev); > > @@ -142,6 +150,7 @@ static int ixp4xx_spkr_remove(struct platform_device *dev) > ixp4xx_spkr_control(pin, 0); > > free_irq(IRQ_IXP4XX_TIMER2, (void *)dev->id); > + gpio_free(dev->id); > > return 0; > } > -- > 1.8.3.1 > -- Dmitry -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
