mfd: remove ucb1400 support

The ucb1400 MFD driver and its gpio and touchscreen child
drivers were only used on a few PXA machines that were unused
for a while and are now removed.

Removing these leaves the AC97 support as ALSA specific,
no other drivers are now connected through this interface.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Bartosz Golaszewski <brgl@bgdev.pl>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Lee Jones <lee@kernel.org>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.com>
Cc: Marek Vasut <marex@denx.de>
Cc: linux-kernel@vger.kernel.org
Cc: linux-gpio@vger.kernel.org
Cc: linux-input@vger.kernel.org
Cc: alsa-devel@alsa-project.org
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

3 files changed, 0 insertions, 170 deletions

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index da57ebf22630..5ea07a65f150 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -1071,17 +1071,6 @@ config PCF50633_GPIO
 	  Say yes here if you want to include support GPIO for pins on
 	  the PCF50633 chip.
 
-config UCB1400_CORE
-	tristate "Philips UCB1400 Core driver"
-	depends on AC97_BUS
-	depends on GPIOLIB
-	help
-	  This enables support for the Philips UCB1400 core functions.
-	  The UCB1400 is an AC97 audio codec.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called ucb1400_core.
-
 config MFD_PM8XXX
 	tristate "Qualcomm PM8xxx PMIC chips driver"
 	depends on (ARM || HEXAGON || COMPILE_TEST)
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 9ba9d711c492..4969ea6e24f1 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -127,7 +127,6 @@ obj-$(CONFIG_MCP_UCB1200_TS)	+= ucb1x00-ts.o
 ifeq ($(CONFIG_SA1100_ASSABET),y)
 obj-$(CONFIG_MCP_UCB1200)	+= ucb1x00-assabet.o
 endif
-obj-$(CONFIG_UCB1400_CORE)	+= ucb1400_core.o
 
 obj-$(CONFIG_PMIC_DA903X)	+= da903x.o
 
diff --git a/drivers/mfd/ucb1400_core.c b/drivers/mfd/ucb1400_core.c
deleted file mode 100644
index ac1d18039568..000000000000
--- a/drivers/mfd/ucb1400_core.c
+++ /dev/null
@@ -1,158 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Core functions for:
- *  Philips UCB1400 multifunction chip
- *
- * Based on ucb1400_ts.c:
- *  Author:	Nicolas Pitre
- *  Created:	September 25, 2006
- *  Copyright:	MontaVista Software, Inc.
- *
- * Spliting done by: Marek Vasut <marek.vasut@gmail.com>
- * If something doesn't work and it worked before spliting, e-mail me,
- * dont bother Nicolas please ;-)
- *
- * This code is heavily based on ucb1x00-*.c copyrighted by Russell King
- * covering the UCB1100, UCB1200 and UCB1300..  Support for the UCB1400 has
- * been made separate from ucb1x00-core/ucb1x00-ts on Russell's request.
- */
-
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/ucb1400.h>
-
-unsigned int ucb1400_adc_read(struct snd_ac97 *ac97, u16 adc_channel,
-		int adcsync)
-{
-	unsigned int val;
-
-	if (adcsync)
-		adc_channel |= UCB_ADC_SYNC_ENA;
-
-	ucb1400_reg_write(ac97, UCB_ADC_CR, UCB_ADC_ENA | adc_channel);
-	ucb1400_reg_write(ac97, UCB_ADC_CR, UCB_ADC_ENA | adc_channel |
-			UCB_ADC_START);
-
-	while (!((val = ucb1400_reg_read(ac97, UCB_ADC_DATA))
-				& UCB_ADC_DAT_VALID))
-		schedule_timeout_uninterruptible(1);
-
-	return val & UCB_ADC_DAT_MASK;
-}
-EXPORT_SYMBOL_GPL(ucb1400_adc_read);
-
-static int ucb1400_core_probe(struct device *dev)
-{
-	int err;
-	struct ucb1400 *ucb;
-	struct ucb1400_ts ucb_ts;
-	struct ucb1400_gpio ucb_gpio;
-	struct snd_ac97 *ac97;
-	struct ucb1400_pdata *pdata = dev_get_platdata(dev);
-
-	memset(&ucb_ts, 0, sizeof(ucb_ts));
-	memset(&ucb_gpio, 0, sizeof(ucb_gpio));
-
-	ucb = kzalloc(sizeof(struct ucb1400), GFP_KERNEL);
-	if (!ucb) {
-		err = -ENOMEM;
-		goto err;
-	}
-
-	dev_set_drvdata(dev, ucb);
-
-	ac97 = to_ac97_t(dev);
-
-	ucb_ts.id = ucb1400_reg_read(ac97, UCB_ID);
-	if (ucb_ts.id != UCB_ID_1400) {
-		err = -ENODEV;
-		goto err0;
-	}
-
-	/* GPIO */
-	ucb_gpio.ac97 = ac97;
-	if (pdata)
-		ucb_gpio.gpio_offset = pdata->gpio_offset;
-
-	ucb->ucb1400_gpio = platform_device_alloc("ucb1400_gpio", -1);
-	if (!ucb->ucb1400_gpio) {
-		err = -ENOMEM;
-		goto err0;
-	}
-	err = platform_device_add_data(ucb->ucb1400_gpio, &ucb_gpio,
-					sizeof(ucb_gpio));
-	if (err)
-		goto err1;
-	err = platform_device_add(ucb->ucb1400_gpio);
-	if (err)
-		goto err1;
-
-	/* TOUCHSCREEN */
-	ucb_ts.ac97 = ac97;
-
-	if (pdata != NULL && pdata->irq >= 0)
-		ucb_ts.irq = pdata->irq;
-	else
-		ucb_ts.irq = -1;
-
-	ucb->ucb1400_ts = platform_device_alloc("ucb1400_ts", -1);
-	if (!ucb->ucb1400_ts) {
-		err = -ENOMEM;
-		goto err2;
-	}
-	err = platform_device_add_data(ucb->ucb1400_ts, &ucb_ts,
-					sizeof(ucb_ts));
-	if (err)
-		goto err3;
-	err = platform_device_add(ucb->ucb1400_ts);
-	if (err)
-		goto err3;
-
-	return 0;
-
-err3:
-	platform_device_put(ucb->ucb1400_ts);
-err2:
-	platform_device_del(ucb->ucb1400_gpio);
-err1:
-	platform_device_put(ucb->ucb1400_gpio);
-err0:
-	kfree(ucb);
-err:
-	return err;
-}
-
-static int ucb1400_core_remove(struct device *dev)
-{
-	struct ucb1400 *ucb = dev_get_drvdata(dev);
-
-	platform_device_unregister(ucb->ucb1400_ts);
-	platform_device_unregister(ucb->ucb1400_gpio);
-
-	kfree(ucb);
-	return 0;
-}
-
-static struct device_driver ucb1400_core_driver = {
-	.name	= "ucb1400_core",
-	.bus	= &ac97_bus_type,
-	.probe	= ucb1400_core_probe,
-	.remove	= ucb1400_core_remove,
-};
-
-static int __init ucb1400_core_init(void)
-{
-	return driver_register(&ucb1400_core_driver);
-}
-
-static void __exit ucb1400_core_exit(void)
-{
-	driver_unregister(&ucb1400_core_driver);
-}
-
-module_init(ucb1400_core_init);
-module_exit(ucb1400_core_exit);
-
-MODULE_DESCRIPTION("Philips UCB1400 driver");
-MODULE_LICENSE("GPL");