Commit 9aa75914 authored by Linus Walleij's avatar Linus Walleij Committed by Dmitry Torokhov
Browse files

Input: ixp4xx-beeper - delete driver 



The NSLU2 has been migrated to devicetree and there we use
the gpio-beeper.c driver instead, the boardfile will be deleted
for kernel v5.15 so drop this custom and now unneeded driver.

Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210714115028.916360-1-linus.walleij@linaro.org


Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent 320424c7

drivers/input/misc/Kconfig

+0 −12
Original line number Diff line number Diff line
@@ -309,18 +309,6 @@ config INPUT_GPIO_VIBRA 
	  To compile this driver as a module, choose M here: the module will be

	  called gpio-vibra.



config INPUT_IXP4XX_BEEPER

	tristate "IXP4XX Beeper support"

	depends on ARCH_IXP4XX

	help

	  If you say yes here, you can connect a beeper to the

	  ixp4xx gpio pins. This is used by the LinkSys NSLU2.



	  If unsure, say Y.



	  To compile this driver as a module, choose M here: the

	  module will be called ixp4xx-beeper.



config INPUT_COBALT_BTNS

	tristate "Cobalt button interface"

	depends on MIPS_COBALT

drivers/input/misc/Makefile

+0 −1
Original line number Diff line number Diff line
@@ -44,7 +44,6 @@ obj-$(CONFIG_HP_SDC_RTC) += hp_sdc_rtc.o 
obj-$(CONFIG_INPUT_IMS_PCU)		+= ims-pcu.o

obj-$(CONFIG_INPUT_IQS269A)		+= iqs269a.o

obj-$(CONFIG_INPUT_IQS626A)		+= iqs626a.o

obj-$(CONFIG_INPUT_IXP4XX_BEEPER)	+= ixp4xx-beeper.o

obj-$(CONFIG_INPUT_KEYSPAN_REMOTE)	+= keyspan_remote.o

obj-$(CONFIG_INPUT_KXTJ9)		+= kxtj9.o

obj-$(CONFIG_INPUT_M68K_BEEP)		+= m68kspkr.o

drivers/input/misc/ixp4xx-beeper.c

deleted100644 → 0
+0 −183
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Generic IXP4xx beeper driver

 *

 * Copyright (C) 2005 Tower Technologies

 *

 * based on nslu2-io.c

 *  Copyright (C) 2004 Karen Spearel

 *

 * Author: Alessandro Zummo <a.zummo@towertech.it>

 * Maintainers: http://www.nslu2-linux.org/

 */



#include <linux/module.h>

#include <linux/input.h>

#include <linux/delay.h>

#include <linux/platform_device.h>

#include <linux/interrupt.h>

#include <linux/gpio.h>

#include <mach/hardware.h>



MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");

MODULE_DESCRIPTION("ixp4xx beeper driver");

MODULE_LICENSE("GPL");

MODULE_ALIAS("platform:ixp4xx-beeper");



static DEFINE_SPINLOCK(beep_lock);



static int ixp4xx_timer2_irq;



static void ixp4xx_spkr_control(unsigned int pin, unsigned int count)

{

	unsigned long flags;



	spin_lock_irqsave(&beep_lock, flags);



	if (count) {

		gpio_direction_output(pin, 0);

		*IXP4XX_OSRT2 = (count & ~IXP4XX_OST_RELOAD_MASK) | IXP4XX_OST_ENABLE;

	} else {

		gpio_direction_output(pin, 1);

		gpio_direction_input(pin);

		*IXP4XX_OSRT2 = 0;

	}



	spin_unlock_irqrestore(&beep_lock, flags);

}



static int ixp4xx_spkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)

{

	unsigned int pin = (unsigned int) input_get_drvdata(dev);

	unsigned int count = 0;



	if (type != EV_SND)

		return -1;



	switch (code) {

		case SND_BELL:

			if (value)

				value = 1000;

		case SND_TONE:

			break;

		default:

			return -1;

	}



	if (value > 20 && value < 32767)

		count = (ixp4xx_timer_freq / (value * 4)) - 1;



	ixp4xx_spkr_control(pin, count);



	return 0;

}



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 */

	gpio_set_value(pin, !gpio_get_value(pin));



	return IRQ_HANDLED;

}



static int ixp4xx_spkr_probe(struct platform_device *dev)

{

	struct input_dev *input_dev;

	int irq;

	int err;



	input_dev = input_allocate_device();

	if (!input_dev)

		return -ENOMEM;



	input_set_drvdata(input_dev, (void *) dev->id);



	input_dev->name = "ixp4xx beeper";

	input_dev->phys = "ixp4xx/gpio";

	input_dev->id.bustype = BUS_HOST;

	input_dev->id.vendor  = 0x001f;

	input_dev->id.product = 0x0001;

	input_dev->id.version = 0x0100;

	input_dev->dev.parent = &dev->dev;



	input_dev->evbit[0] = BIT_MASK(EV_SND);

	input_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE);

	input_dev->event = ixp4xx_spkr_event;



	irq = platform_get_irq(dev, 0);

	if (irq < 0) {

		err = irq;

		goto err_free_device;

	}



	err = gpio_request(dev->id, "ixp4-beeper");

	if (err)

		goto err_free_device;



	err = request_irq(irq, &ixp4xx_spkr_interrupt,

			  IRQF_NO_SUSPEND, "ixp4xx-beeper",

			  (void *) dev->id);

	if (err)

		goto err_free_gpio;

	ixp4xx_timer2_irq = irq;



	err = input_register_device(input_dev);

	if (err)

		goto err_free_irq;



	platform_set_drvdata(dev, input_dev);



	return 0;



 err_free_irq:

	free_irq(irq, (void *)dev->id);

 err_free_gpio:

	gpio_free(dev->id);

 err_free_device:

	input_free_device(input_dev);



	return err;

}



static int ixp4xx_spkr_remove(struct platform_device *dev)

{

	struct input_dev *input_dev = platform_get_drvdata(dev);

	unsigned int pin = (unsigned int) input_get_drvdata(input_dev);



	input_unregister_device(input_dev);



	/* turn the speaker off */

	disable_irq(ixp4xx_timer2_irq);

	ixp4xx_spkr_control(pin, 0);



	free_irq(ixp4xx_timer2_irq, (void *)dev->id);

	gpio_free(dev->id);



	return 0;

}



static void ixp4xx_spkr_shutdown(struct platform_device *dev)

{

	struct input_dev *input_dev = platform_get_drvdata(dev);

	unsigned int pin = (unsigned int) input_get_drvdata(input_dev);



	/* turn off the speaker */

	disable_irq(ixp4xx_timer2_irq);

	ixp4xx_spkr_control(pin, 0);

}



static struct platform_driver ixp4xx_spkr_platform_driver = {

	.driver		= {

		.name	= "ixp4xx-beeper",

	},

	.probe		= ixp4xx_spkr_probe,

	.remove		= ixp4xx_spkr_remove,

	.shutdown	= ixp4xx_spkr_shutdown,

};

module_platform_driver(ixp4xx_spkr_platform_driver);