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: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

3 files changed, 0 insertions, 221 deletions

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 5ea07a65f150..5c24841e5699 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -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
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 4969ea6e24f1..09712495f4f4 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -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
diff --git a/drivers/mfd/htc-pasic3.c b/drivers/mfd/htc-pasic3.c
deleted file mode 100644
index 0c46b7e64b2d..000000000000
--- a/drivers/mfd/htc-pasic3.c
+++ /dev/null
@@ -1,210 +0,0 @@
-// 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");