input: misc: ixp4-beeper: switch to use gpiolib
The platform using this beeper has support for gpiolib, so there is no point to use the custom gpio_line* API. A strange ambiguity where a line was first set as input and then driven high was solved by first driving the line high as output and then switch it to input. Cc: Imre Kaloz <kaloz@openwrt.org> Cc: Alexandre Courbot <acourbot@nvidia.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Krzysztof Halasa <khc@pm.waw.pl> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Коммит
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@ -20,6 +20,7 @@
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#include <linux/delay.h>
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#include <linux/platform_device.h>
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#include <linux/interrupt.h>
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#include <linux/gpio.h>
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#include <mach/hardware.h>
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MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
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@ -36,14 +37,11 @@ static void ixp4xx_spkr_control(unsigned int pin, unsigned int count)
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spin_lock_irqsave(&beep_lock, flags);
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if (count) {
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gpio_line_config(pin, IXP4XX_GPIO_OUT);
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gpio_line_set(pin, IXP4XX_GPIO_LOW);
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gpio_direction_output(pin, 0);
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*IXP4XX_OSRT2 = (count & ~IXP4XX_OST_RELOAD_MASK) | IXP4XX_OST_ENABLE;
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} else {
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gpio_line_config(pin, IXP4XX_GPIO_IN);
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gpio_line_set(pin, IXP4XX_GPIO_HIGH);
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gpio_direction_output(pin, 1);
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gpio_direction_input(pin);
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*IXP4XX_OSRT2 = 0;
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}
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