Input: ixp4xx-beeper - Delete driver

Commit Message

Linus Walleij July 14, 2021, 11:50 a.m. UTC

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.

Cc: Arnd Bergmann <[e-mail]>
Cc: Imre Kaloz <[e-mail]>
Cc: Krzysztof Halasa <[e-mail]>
Cc: Alessandro Zummo <[e-mail]>
Signed-off-by: Linus Walleij <[e-mail]>
---
 drivers/input/misc/Kconfig         |  12 --
 drivers/input/misc/Makefile        |   1 -
 drivers/input/misc/ixp4xx-beeper.c | 208 -----------------------------
 3 files changed, 221 deletions(-)
 delete mode 100644 drivers/input/misc/ixp4xx-beeper.c

Patch

diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index 97f0455c2aee..ae01507b7afd 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -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 || COMPILE_TEST
-	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
diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
index f593beed7e05..2a0943507467 100644
--- a/drivers/input/misc/Makefile
+++ b/drivers/input/misc/Makefile
@@ -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
diff --git a/drivers/input/misc/ixp4xx-beeper.c b/drivers/input/misc/ixp4xx-beeper.c
deleted file mode 100644
index b31c04a9e683..000000000000
--- a/drivers/input/misc/ixp4xx-beeper.c
+++ /dev/null
@@ -1,208 +0,0 @@ 
-// 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 <[e-mail]>
- * 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>
-
-MODULE_AUTHOR("Alessandro Zummo <[e-mail]>");
-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 __iomem *ixp4xx_spkr_regs;
-static int ixp4xx_spkr_timer_freq;
-
-#define IXP4XX_OSRT2_OFFSET		0x10 /* Timer 2 Reload */
-#define IXP4XX_OSST_OFFSET		0x20 /* Timer Status */
-
-#define IXP4XX_OST_ENABLE		0x00000001
-#define IXP4XX_OST_RELOAD_MASK		0x00000003
-
-#define IXP4XX_OSST_TIMER_2_PEND	0x00000002
-
-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);
-		__raw_writel((count & ~IXP4XX_OST_RELOAD_MASK) | IXP4XX_OST_ENABLE,
-			     ixp4xx_spkr_regs + IXP4XX_OSRT2_OFFSET);
-	} else {
-		gpio_direction_output(pin, 1);
-		gpio_direction_input(pin);
-		__raw_writel(0, ixp4xx_spkr_regs + IXP4XX_OSRT2_OFFSET);
-	}
-
-	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_spkr_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 */
-	__raw_writel(IXP4XX_OSST_TIMER_2_PEND, ixp4xx_spkr_regs + IXP4XX_OSST_OFFSET);
-
-	/* 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;
-	struct resource *res;
-	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;
-	}
-
-	res = platform_get_resource(dev, IORESOURCE_MEM, 0);
-	if (!res) {
-		err = -ENXIO;
-		goto err_free_device;
-	}
-	/* note: don't call request_mem_region because of conflict */
-	ixp4xx_spkr_regs = devm_ioremap(&dev->dev, res->start, resource_size(res));
-	if (!ixp4xx_spkr_regs) {
-		err = -ENXIO;
-		goto err_free_device;
-	}
-
-	ixp4xx_spkr_timer_freq = (uintptr_t)dev_get_platdata(&dev->dev);
-
-	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);
-