input: remove pxa930_rotary keyboard driver

The pxa930 platform is getting removed and no upstream machine
ever defined a rotary keyboard device.

Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: linux-input@vger.kernel.org
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

drivers/input/keyboard/Kconfig

@@ -550,15 +550,6 @@ config KEYBOARD_PXA27x
 	  To compile this driver as a module, choose M here: the
 	  module will be called pxa27x_keypad.
 
-config KEYBOARD_PXA930_ROTARY
-	tristate "PXA930/PXA935 Enhanced Rotary Controller Support"
-	depends on CPU_PXA930 || CPU_PXA935
-	help
-	  Enable support for PXA930/PXA935 Enhanced Rotary Controller.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called pxa930_rotary.
-
 config KEYBOARD_PMIC8XXX
 	tristate "Qualcomm PMIC8XXX keypad support"
 	depends on MFD_PM8XXX

drivers/input/keyboard/Makefile

@@ -54,7 +54,6 @@ obj-$(CONFIG_KEYBOARD_OPENCORES)	+= opencores-kbd.o
 obj-$(CONFIG_KEYBOARD_PINEPHONE)	+= pinephone-keyboard.o
 obj-$(CONFIG_KEYBOARD_PMIC8XXX)		+= pmic8xxx-keypad.o
 obj-$(CONFIG_KEYBOARD_PXA27x)		+= pxa27x_keypad.o
-obj-$(CONFIG_KEYBOARD_PXA930_ROTARY)	+= pxa930_rotary.o
 obj-$(CONFIG_KEYBOARD_QT1050)           += qt1050.o
 obj-$(CONFIG_KEYBOARD_QT1070)           += qt1070.o
 obj-$(CONFIG_KEYBOARD_QT2160)		+= qt2160.o

drivers/input/keyboard/pxa930_rotary.c

-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Driver for the enhanced rotary controller on pxa930 and pxa935
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/input.h>
-#include <linux/platform_device.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-
-#include <linux/platform_data/keyboard-pxa930_rotary.h>
-
-#define SBCR	(0x04)
-#define ERCR	(0x0c)
-
-#define SBCR_ERSB	(1 << 5)
-
-struct pxa930_rotary {
-	struct input_dev	*input_dev;
-	void __iomem		*mmio_base;
-	int			last_ercr;
-
-	struct pxa930_rotary_platform_data *pdata;
-};
-
-static void clear_sbcr(struct pxa930_rotary *r)
-{
-	uint32_t sbcr = __raw_readl(r->mmio_base + SBCR);
-
-	__raw_writel(sbcr | SBCR_ERSB, r->mmio_base + SBCR);
-	__raw_writel(sbcr & ~SBCR_ERSB, r->mmio_base + SBCR);
-}
-
-static irqreturn_t rotary_irq(int irq, void *dev_id)
-{
-	struct pxa930_rotary *r = dev_id;
-	struct pxa930_rotary_platform_data *pdata = r->pdata;
-	int ercr, delta, key;
-
-	ercr = __raw_readl(r->mmio_base + ERCR) & 0xf;
-	clear_sbcr(r);
-
-	delta = ercr - r->last_ercr;
-	if (delta == 0)
-		return IRQ_HANDLED;
-
-	r->last_ercr = ercr;
-
-	if (pdata->up_key && pdata->down_key) {
-		key = (delta > 0) ? pdata->up_key : pdata->down_key;
-		input_report_key(r->input_dev, key, 1);
-		input_sync(r->input_dev);
-		input_report_key(r->input_dev, key, 0);
-	} else
-		input_report_rel(r->input_dev, pdata->rel_code, delta);
-
-	input_sync(r->input_dev);
-
-	return IRQ_HANDLED;
-}
-
-static int pxa930_rotary_open(struct input_dev *dev)
-{
-	struct pxa930_rotary *r = input_get_drvdata(dev);
-
-	clear_sbcr(r);
-
-	return 0;
-}
-
-static void pxa930_rotary_close(struct input_dev *dev)
-{
-	struct pxa930_rotary *r = input_get_drvdata(dev);
-
-	clear_sbcr(r);
-}
-
-static int pxa930_rotary_probe(struct platform_device *pdev)
-{
-	struct pxa930_rotary_platform_data *pdata =
-			dev_get_platdata(&pdev->dev);
-	struct pxa930_rotary *r;
-	struct input_dev *input_dev;
-	struct resource *res;
-	int irq;
-	int err;
-
-	irq = platform_get_irq(pdev, 0);
-	if (irq < 0)
-		return -ENXIO;
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(&pdev->dev, "no I/O memory defined\n");
-		return -ENXIO;
-	}
-
-	if (!pdata) {
-		dev_err(&pdev->dev, "no platform data defined\n");
-		return -EINVAL;
-	}
-
-	r = kzalloc(sizeof(struct pxa930_rotary), GFP_KERNEL);
-	if (!r)
-		return -ENOMEM;
-
-	r->mmio_base = ioremap(res->start, resource_size(res));
-	if (r->mmio_base == NULL) {
-		dev_err(&pdev->dev, "failed to remap IO memory\n");
-		err = -ENXIO;
-		goto failed_free;
-	}
-
-	r->pdata = pdata;
-	platform_set_drvdata(pdev, r);
-
-	/* allocate and register the input device */
-	input_dev = input_allocate_device();
-	if (!input_dev) {
-		dev_err(&pdev->dev, "failed to allocate input device\n");
-		err = -ENOMEM;
-		goto failed_free_io;
-	}
-
-	input_dev->name = pdev->name;
-	input_dev->id.bustype = BUS_HOST;
-	input_dev->open = pxa930_rotary_open;
-	input_dev->close = pxa930_rotary_close;
-	input_dev->dev.parent = &pdev->dev;
-
-	if (pdata->up_key && pdata->down_key) {
-		__set_bit(pdata->up_key, input_dev->keybit);
-		__set_bit(pdata->down_key, input_dev->keybit);
-		__set_bit(EV_KEY, input_dev->evbit);
-	} else {
-		__set_bit(pdata->rel_code, input_dev->relbit);
-		__set_bit(EV_REL, input_dev->evbit);
-	}
-
-	r->input_dev = input_dev;
-	input_set_drvdata(input_dev, r);
-
-	err = request_irq(irq, rotary_irq, 0,
-			"enhanced rotary", r);
-	if (err) {
-		dev_err(&pdev->dev, "failed to request IRQ\n");
-		goto failed_free_input;
-	}
-
-	err = input_register_device(input_dev);
-	if (err) {
-		dev_err(&pdev->dev, "failed to register input device\n");
-		goto failed_free_irq;
-	}
-
-	return 0;
-
-failed_free_irq:
-	free_irq(irq, r);
-failed_free_input:
-	input_free_device(input_dev);
-failed_free_io:
-	iounmap(r->mmio_base);
-failed_free:
-	kfree(r);
-	return err;
-}
-
-static int pxa930_rotary_remove(struct platform_device *pdev)
-{
-	struct pxa930_rotary *r = platform_get_drvdata(pdev);
-
-	free_irq(platform_get_irq(pdev, 0), r);
-	input_unregister_device(r->input_dev);
-	iounmap(r->mmio_base);
-	kfree(r);
-
-	return 0;
-}
-
-static struct platform_driver pxa930_rotary_driver = {
-	.driver		= {
-		.name	= "pxa930-rotary",
-	},
-	.probe		= pxa930_rotary_probe,
-	.remove		= pxa930_rotary_remove,
-};
-module_platform_driver(pxa930_rotary_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Driver for PXA93x Enhanced Rotary Controller");
-MODULE_AUTHOR("Yao Yong <yaoyong@marvell.com>");

include/linux/platform_data/keyboard-pxa930_rotary.h

-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __ASM_ARCH_PXA930_ROTARY_H
-#define __ASM_ARCH_PXA930_ROTARY_H
-
-/* NOTE:
- *
- * rotary can be either interpreted as a ralative input event (e.g.
- * REL_WHEEL or REL_HWHEEL) or a specific key event (e.g. UP/DOWN
- * or LEFT/RIGHT), depending on if up_key & down_key are assigned
- * or rel_code is assigned a non-zero value. When all are non-zero,
- * up_key and down_key will be preferred.
- */
-struct pxa930_rotary_platform_data {
-	int	up_key;
-	int	down_key;
-	int	rel_code;
-};
-
-void __init pxa930_set_rotarykey_info(struct pxa930_rotary_platform_data *info);
-
-#endif /* __ASM_ARCH_PXA930_ROTARY_H */