input: remove zylonite touchscreen driver

The PXA zylonite platform was removed, so this driver has no
remaining users.

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

3 files changed, 0 insertions, 235 deletions

diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 5abb45ea1b1b..ca00f55eaf45 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -928,20 +928,6 @@ config TOUCHSCREEN_WM97XX_MAINSTONE
 	  To compile this driver as a module, choose M here: the
 	  module will be called mainstone-wm97xx.
 
-config TOUCHSCREEN_WM97XX_ZYLONITE
-	tristate "Zylonite accelerated touch"
-	depends on TOUCHSCREEN_WM97XX && MACH_ZYLONITE
-	depends on SND_PXA2XX_LIB_AC97
-	select TOUCHSCREEN_WM9713
-	help
-	  Say Y here for support for streaming mode with the touchscreen
-	  on Zylonite systems.
-
-	  If unsure, say N.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called zylonite-wm97xx.
-
 config TOUCHSCREEN_USB_COMPOSITE
 	tristate "USB Touchscreen Driver"
 	depends on USB_ARCH_HAS_HCD
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index 3bc2a47c489c..7053fede594e 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -107,7 +107,6 @@ wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9705)	+= wm9705.o
 wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9712)	+= wm9712.o
 wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9713)	+= wm9713.o
 obj-$(CONFIG_TOUCHSCREEN_WM97XX_MAINSTONE)	+= mainstone-wm97xx.o
-obj-$(CONFIG_TOUCHSCREEN_WM97XX_ZYLONITE)	+= zylonite-wm97xx.o
 obj-$(CONFIG_TOUCHSCREEN_SX8654)	+= sx8654.o
 obj-$(CONFIG_TOUCHSCREEN_TPS6507X)	+= tps6507x-ts.o
 obj-$(CONFIG_TOUCHSCREEN_ZET6223)	+= zet6223.o
diff --git a/drivers/input/touchscreen/zylonite-wm97xx.c b/drivers/input/touchscreen/zylonite-wm97xx.c
deleted file mode 100644
index a70fe4abe520..000000000000
--- a/drivers/input/touchscreen/zylonite-wm97xx.c
+++ /dev/null
@@ -1,220 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * zylonite-wm97xx.c  --  Zylonite Continuous Touch screen driver
- *
- * Copyright 2004, 2007, 2008 Wolfson Microelectronics PLC.
- * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
- * Parts Copyright : Ian Molton <spyro@f2s.com>
- *                   Andrew Zabolotny <zap@homelink.ru>
- *
- * Notes:
- *     This is a wm97xx extended touch driver supporting interrupt driven
- *     and continuous operation on Marvell Zylonite development systems
- *     (which have a WM9713 on board).
- */
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/gpio/consumer.h>
-#include <linux/irq.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/soc/pxa/cpu.h>
-#include <linux/wm97xx.h>
-
-#include <sound/pxa2xx-lib.h>
-
-struct continuous {
-	u16 id;    /* codec id */
-	u8 code;   /* continuous code */
-	u8 reads;  /* number of coord reads per read cycle */
-	u32 speed; /* number of coords per second */
-};
-
-#define WM_READS(sp) ((sp / HZ) + 1)
-
-static const struct continuous cinfo[] = {
-	{ WM9713_ID2, 0, WM_READS(94),  94  },
-	{ WM9713_ID2, 1, WM_READS(120), 120 },
-	{ WM9713_ID2, 2, WM_READS(154), 154 },
-	{ WM9713_ID2, 3, WM_READS(188), 188 },
-};
-
-/* continuous speed index */
-static int sp_idx;
-
-/*
- * Pen sampling frequency (Hz) in continuous mode.
- */
-static int cont_rate = 200;
-module_param(cont_rate, int, 0);
-MODULE_PARM_DESC(cont_rate, "Sampling rate in continuous mode (Hz)");
-
-/*
- * Pressure readback.
- *
- * Set to 1 to read back pen down pressure
- */
-static int pressure;
-module_param(pressure, int, 0);
-MODULE_PARM_DESC(pressure, "Pressure readback (1 = pressure, 0 = no pressure)");
-
-/*
- * AC97 touch data slot.
- *
- * Touch screen readback data ac97 slot
- */
-static int ac97_touch_slot = 5;
-module_param(ac97_touch_slot, int, 0);
-MODULE_PARM_DESC(ac97_touch_slot, "Touch screen data slot AC97 number");
-
-
-/* flush AC97 slot 5 FIFO machines */
-static void wm97xx_acc_pen_up(struct wm97xx *wm)
-{
-	int i;
-
-	msleep(1);
-
-	for (i = 0; i < 16; i++)
-		pxa2xx_ac97_read_modr();
-}
-
-static int wm97xx_acc_pen_down(struct wm97xx *wm)
-{
-	u16 x, y, p = 0x100 | WM97XX_ADCSEL_PRES;
-	int reads = 0;
-	static u16 last, tries;
-
-	/* When the AC97 queue has been drained we need to allow time
-	 * to buffer up samples otherwise we end up spinning polling
-	 * for samples.  The controller can't have a suitably low
-	 * threshold set to use the notifications it gives.
-	 */
-	msleep(1);
-
-	if (tries > 5) {
-		tries = 0;
-		return RC_PENUP;
-	}
-
-	x = pxa2xx_ac97_read_modr();
-	if (x == last) {
-		tries++;
-		return RC_AGAIN;
-	}
-	last = x;
-	do {
-		if (reads)
-			x = pxa2xx_ac97_read_modr();
-		y = pxa2xx_ac97_read_modr();
-		if (pressure)
-			p = pxa2xx_ac97_read_modr();
-
-		dev_dbg(wm->dev, "Raw coordinates: x=%x, y=%x, p=%x\n",
-			x, y, p);
-
-		/* are samples valid */
-		if ((x & WM97XX_ADCSEL_MASK) != WM97XX_ADCSEL_X ||
-		    (y & WM97XX_ADCSEL_MASK) != WM97XX_ADCSEL_Y ||
-		    (p & WM97XX_ADCSEL_MASK) != WM97XX_ADCSEL_PRES)
-			goto up;
-
-		/* coordinate is good */
-		tries = 0;
-		input_report_abs(wm->input_dev, ABS_X, x & 0xfff);
-		input_report_abs(wm->input_dev, ABS_Y, y & 0xfff);
-		input_report_abs(wm->input_dev, ABS_PRESSURE, p & 0xfff);
-		input_report_key(wm->input_dev, BTN_TOUCH, (p != 0));
-		input_sync(wm->input_dev);
-		reads++;
-	} while (reads < cinfo[sp_idx].reads);
-up:
-	return RC_PENDOWN | RC_AGAIN;
-}
-
-static int wm97xx_acc_startup(struct wm97xx *wm)
-{
-	int idx;
-
-	/* check we have a codec */
-	if (wm->ac97 == NULL)
-		return -ENODEV;
-
-	/* Go you big red fire engine */
-	for (idx = 0; idx < ARRAY_SIZE(cinfo); idx++) {
-		if (wm->id != cinfo[idx].id)
-			continue;
-		sp_idx = idx;
-		if (cont_rate <= cinfo[idx].speed)
-			break;
-	}
-	wm->acc_rate = cinfo[sp_idx].code;
-	wm->acc_slot = ac97_touch_slot;
-	dev_info(wm->dev,
-		 "zylonite accelerated touchscreen driver, %d samples/sec\n",
-		 cinfo[sp_idx].speed);
-
-	return 0;
-}
-
-static struct wm97xx_mach_ops zylonite_mach_ops = {
-	.acc_enabled	= 1,
-	.acc_pen_up	= wm97xx_acc_pen_up,
-	.acc_pen_down	= wm97xx_acc_pen_down,
-	.acc_startup	= wm97xx_acc_startup,
-	.irq_gpio	= WM97XX_GPIO_2,
-};
-
-static int zylonite_wm97xx_probe(struct platform_device *pdev)
-{
-	struct wm97xx *wm = platform_get_drvdata(pdev);
-	struct gpio_desc *gpio_touch_irq;
-	int err;
-
-	gpio_touch_irq = devm_gpiod_get(&pdev->dev, "touch", GPIOD_IN);
-	err = PTR_ERR_OR_ZERO(gpio_touch_irq);
-	if (err) {
-		dev_err(&pdev->dev, "Cannot get irq gpio: %d\n", err);
-		return err;
-	}
-
-	wm->pen_irq = gpiod_to_irq(gpio_touch_irq);
-	irq_set_irq_type(wm->pen_irq, IRQ_TYPE_EDGE_BOTH);
-
-	wm97xx_config_gpio(wm, WM97XX_GPIO_13, WM97XX_GPIO_IN,
-			   WM97XX_GPIO_POL_HIGH,
-			   WM97XX_GPIO_STICKY,
-			   WM97XX_GPIO_WAKE);
-	wm97xx_config_gpio(wm, WM97XX_GPIO_2, WM97XX_GPIO_OUT,
-			   WM97XX_GPIO_POL_HIGH,
-			   WM97XX_GPIO_NOTSTICKY,
-			   WM97XX_GPIO_NOWAKE);
-
-	return wm97xx_register_mach_ops(wm, &zylonite_mach_ops);
-}
-
-static int zylonite_wm97xx_remove(struct platform_device *pdev)
-{
-	struct wm97xx *wm = platform_get_drvdata(pdev);
-
-	wm97xx_unregister_mach_ops(wm);
-
-	return 0;
-}
-
-static struct platform_driver zylonite_wm97xx_driver = {
-	.probe	= zylonite_wm97xx_probe,
-	.remove	= zylonite_wm97xx_remove,
-	.driver	= {
-		.name	= "wm97xx-touch",
-	},
-};
-module_platform_driver(zylonite_wm97xx_driver);
-
-/* Module information */
-MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
-MODULE_DESCRIPTION("wm97xx continuous touch driver for Zylonite");
-MODULE_LICENSE("GPL");