Commit 61d9420a authored by Arnd Bergmann's avatar Arnd Bergmann
Browse files

mfd: remove htc-pasic3 driver 



The htc-pasic3 MFD device was only used in the PXA magician
machine that is now removed, so this can be recycled as well.

Cc: Lee Jones <lee@kernel.org>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Acked-by: default avatarRobert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent 652719b1

drivers/mfd/Kconfig

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@@ -541,15 +541,6 @@ config MFD_HI655X_PMIC 
	help

	  Select this option to enable Hisilicon hi655x series pmic driver.



config HTC_PASIC3

	tristate "HTC PASIC3 LED/DS1WM chip support"

	select MFD_CORE

	help

	  This core driver provides register access for the LED/DS1WM

	  chips labeled "AIC2" and "AIC3", found on HTC Blueangel and

	  HTC Magician devices, respectively. Actual functionality is

	  handled by the leds-pasic3 and ds1wm drivers.



config MFD_INTEL_QUARK_I2C_GPIO

	tristate "Intel Quark MFD I2C GPIO"

	depends on PCI

drivers/mfd/Makefile

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@@ -17,8 +17,6 @@ obj-$(CONFIG_MFD_ENE_KB3930) += ene-kb3930.o 
obj-$(CONFIG_MFD_EXYNOS_LPASS)	+= exynos-lpass.o

obj-$(CONFIG_MFD_GATEWORKS_GSC)	+= gateworks-gsc.o



obj-$(CONFIG_HTC_PASIC3)	+= htc-pasic3.o



obj-$(CONFIG_MFD_TI_LP873X)	+= lp873x.o

obj-$(CONFIG_MFD_TI_LP87565)	+= lp87565.o

obj-$(CONFIG_MFD_TI_AM335X_TSCADC)	+= ti_am335x_tscadc.o

drivers/mfd/htc-pasic3.c

deleted100644 → 0
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// SPDX-License-Identifier: GPL-2.0-only

/*

 * Core driver for HTC PASIC3 LED/DS1WM chip.

 *

 * Copyright (C) 2006 Philipp Zabel <philipp.zabel@gmail.com>

 */



#include <linux/init.h>

#include <linux/module.h>

#include <linux/platform_device.h>



#include <linux/gpio.h>

#include <linux/io.h>

#include <linux/irq.h>

#include <linux/interrupt.h>

#include <linux/mfd/core.h>

#include <linux/mfd/ds1wm.h>

#include <linux/mfd/htc-pasic3.h>

#include <linux/slab.h>



struct pasic3_data {

	void __iomem *mapping;

	unsigned int bus_shift;

};



#define REG_ADDR  5

#define REG_DATA  6



#define READ_MODE 0x80



/*

 * write to a secondary register on the PASIC3

 */

void pasic3_write_register(struct device *dev, u32 reg, u8 val)

{

	struct pasic3_data *asic = dev_get_drvdata(dev);

	int bus_shift = asic->bus_shift;

	void __iomem *addr = asic->mapping + (REG_ADDR << bus_shift);

	void __iomem *data = asic->mapping + (REG_DATA << bus_shift);



	__raw_writeb(~READ_MODE & reg, addr);

	__raw_writeb(val, data);

}

EXPORT_SYMBOL(pasic3_write_register); /* for leds-pasic3 */



/*

 * read from a secondary register on the PASIC3

 */

u8 pasic3_read_register(struct device *dev, u32 reg)

{

	struct pasic3_data *asic = dev_get_drvdata(dev);

	int bus_shift = asic->bus_shift;

	void __iomem *addr = asic->mapping + (REG_ADDR << bus_shift);

	void __iomem *data = asic->mapping + (REG_DATA << bus_shift);



	__raw_writeb(READ_MODE | reg, addr);

	return __raw_readb(data);

}

EXPORT_SYMBOL(pasic3_read_register); /* for leds-pasic3 */



/*

 * LEDs

 */



static struct mfd_cell led_cell __initdata = {

	.name = "leds-pasic3",

};



/*

 * DS1WM

 */



static int ds1wm_enable(struct platform_device *pdev)

{

	struct device *dev = pdev->dev.parent;

	int c;



	c = pasic3_read_register(dev, 0x28);

	pasic3_write_register(dev, 0x28, c & 0x7f);



	dev_dbg(dev, "DS1WM OWM_EN low (active) %02x\n", c & 0x7f);

	return 0;

}



static int ds1wm_disable(struct platform_device *pdev)

{

	struct device *dev = pdev->dev.parent;

	int c;



	c = pasic3_read_register(dev, 0x28);

	pasic3_write_register(dev, 0x28, c | 0x80);



	dev_dbg(dev, "DS1WM OWM_EN high (inactive) %02x\n", c | 0x80);

	return 0;

}



static struct ds1wm_driver_data ds1wm_pdata = {

	.active_high = 0,

	.reset_recover_delay = 1,

};



static struct resource ds1wm_resources[] __initdata = {

	[0] = {

		.start  = 0,

		.flags  = IORESOURCE_MEM,

	},

	[1] = {

		.start  = 0,

		.end    = 0,

		.flags  = IORESOURCE_IRQ,

	},

};



static const struct mfd_cell ds1wm_cell __initconst = {

	.name          = "ds1wm",

	.enable        = ds1wm_enable,

	.disable       = ds1wm_disable,

	.platform_data = &ds1wm_pdata,

	.pdata_size    = sizeof(ds1wm_pdata),

	.num_resources = 2,

	.resources     = ds1wm_resources,

};



static int __init pasic3_probe(struct platform_device *pdev)

{

	struct pasic3_platform_data *pdata = dev_get_platdata(&pdev->dev);

	struct device *dev = &pdev->dev;

	struct pasic3_data *asic;

	struct resource *r;

	int ret;

	int irq = 0;



	r = platform_get_resource(pdev, IORESOURCE_IRQ, 0);

	if (r) {

		ds1wm_resources[1].flags = IORESOURCE_IRQ | (r->flags &

			(IORESOURCE_IRQ_HIGHEDGE | IORESOURCE_IRQ_LOWEDGE));

		irq = r->start;

	}



	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (!r)

		return -ENXIO;



	if (!request_mem_region(r->start, resource_size(r), "pasic3"))

		return -EBUSY;



	asic = devm_kzalloc(dev, sizeof(struct pasic3_data), GFP_KERNEL);

	if (!asic)

		return -ENOMEM;



	platform_set_drvdata(pdev, asic);



	asic->mapping = ioremap(r->start, resource_size(r));

	if (!asic->mapping) {

		dev_err(dev, "couldn't ioremap PASIC3\n");

		return -ENOMEM;

	}



	/* calculate bus shift from mem resource */

	asic->bus_shift = (resource_size(r) - 5) >> 3;



	if (pdata && pdata->clock_rate) {

		ds1wm_pdata.clock_rate = pdata->clock_rate;

		/* the first 5 PASIC3 registers control the DS1WM */

		ds1wm_resources[0].end = (5 << asic->bus_shift) - 1;

		ret = mfd_add_devices(&pdev->dev, pdev->id,

				      &ds1wm_cell, 1, r, irq, NULL);

		if (ret < 0)

			dev_warn(dev, "failed to register DS1WM\n");

	}



	if (pdata && pdata->led_pdata) {

		led_cell.platform_data = pdata->led_pdata;

		led_cell.pdata_size = sizeof(struct pasic3_leds_machinfo);

		ret = mfd_add_devices(&pdev->dev, pdev->id, &led_cell, 1, r,

				      0, NULL);

		if (ret < 0)

			dev_warn(dev, "failed to register LED device\n");

	}



	return 0;

}



static int pasic3_remove(struct platform_device *pdev)

{

	struct pasic3_data *asic = platform_get_drvdata(pdev);

	struct resource *r;



	mfd_remove_devices(&pdev->dev);



	iounmap(asic->mapping);

	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	release_mem_region(r->start, resource_size(r));

	return 0;

}



MODULE_ALIAS("platform:pasic3");



static struct platform_driver pasic3_driver = {

	.driver		= {

		.name	= "pasic3",

	},

	.remove		= pasic3_remove,

};



module_platform_driver_probe(pasic3_driver, pasic3_probe);



MODULE_AUTHOR("Philipp Zabel <philipp.zabel@gmail.com>");

MODULE_DESCRIPTION("Core driver for HTC PASIC3");

MODULE_LICENSE("GPL");

include/linux/mfd/htc-pasic3.h

deleted100644 → 0
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Original line number Diff line number Diff line 
/*

 * HTC PASIC3 driver - LEDs and DS1WM

 *

 * Copyright (c) 2007 Philipp Zabel <philipp.zabel@gmail.com>

 *

 * This file is subject to the terms and conditions of the GNU General Public

 * License.  See the file COPYING in the main directory of this archive for

 * more details.

 *

 */



#ifndef __PASIC3_H

#define __PASIC3_H



#include <linux/platform_device.h>

#include <linux/leds.h>



extern void pasic3_write_register(struct device *dev, u32 reg, u8 val);

extern u8 pasic3_read_register(struct device *dev, u32 reg);



/*

 * mask for registers 0x20,0x21,0x22

 */

#define PASIC3_MASK_LED0 0x04

#define PASIC3_MASK_LED1 0x08

#define PASIC3_MASK_LED2 0x40



/*

 * bits in register 0x06

 */

#define PASIC3_BIT2_LED0 0x08

#define PASIC3_BIT2_LED1 0x10

#define PASIC3_BIT2_LED2 0x20



struct pasic3_led {

	struct led_classdev         led;

	unsigned int                hw_num;

	unsigned int                bit2;

	unsigned int                mask;

	struct pasic3_leds_machinfo *pdata;

};



struct pasic3_leds_machinfo {

	unsigned int      num_leds;

	unsigned int      power_gpio;

	struct pasic3_led *leds;

};



struct pasic3_platform_data {

	struct pasic3_leds_machinfo *led_pdata;

	unsigned int                 clock_rate;

};



#endif