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>
This commit is contained in:
Arnd Bergmann
parent
652719b100
commit
61d9420a21
@ -541,15 +541,6 @@ config MFD_HI655X_PMIC
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help
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Select this option to enable Hisilicon hi655x series pmic driver.
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config HTC_PASIC3
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tristate "HTC PASIC3 LED/DS1WM chip support"
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select MFD_CORE
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help
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This core driver provides register access for the LED/DS1WM
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chips labeled "AIC2" and "AIC3", found on HTC Blueangel and
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HTC Magician devices, respectively. Actual functionality is
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handled by the leds-pasic3 and ds1wm drivers.
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config MFD_INTEL_QUARK_I2C_GPIO
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tristate "Intel Quark MFD I2C GPIO"
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depends on PCI
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@ -17,8 +17,6 @@ obj-$(CONFIG_MFD_ENE_KB3930) += ene-kb3930.o
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obj-$(CONFIG_MFD_EXYNOS_LPASS) += exynos-lpass.o
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obj-$(CONFIG_MFD_GATEWORKS_GSC) += gateworks-gsc.o
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obj-$(CONFIG_HTC_PASIC3) += htc-pasic3.o
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obj-$(CONFIG_MFD_TI_LP873X) += lp873x.o
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obj-$(CONFIG_MFD_TI_LP87565) += lp87565.o
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obj-$(CONFIG_MFD_TI_AM335X_TSCADC) += ti_am335x_tscadc.o
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@ -1,210 +0,0 @@
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Core driver for HTC PASIC3 LED/DS1WM chip.
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*
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* Copyright (C) 2006 Philipp Zabel <philipp.zabel@gmail.com>
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <linux/io.h>
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#include <linux/irq.h>
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#include <linux/interrupt.h>
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#include <linux/mfd/core.h>
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#include <linux/mfd/ds1wm.h>
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#include <linux/mfd/htc-pasic3.h>
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#include <linux/slab.h>
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struct pasic3_data {
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void __iomem *mapping;
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unsigned int bus_shift;
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};
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#define REG_ADDR 5
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#define REG_DATA 6
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#define READ_MODE 0x80
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/*
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* write to a secondary register on the PASIC3
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*/
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void pasic3_write_register(struct device *dev, u32 reg, u8 val)
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{
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struct pasic3_data *asic = dev_get_drvdata(dev);
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int bus_shift = asic->bus_shift;
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void __iomem *addr = asic->mapping + (REG_ADDR << bus_shift);
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void __iomem *data = asic->mapping + (REG_DATA << bus_shift);
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__raw_writeb(~READ_MODE & reg, addr);
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__raw_writeb(val, data);
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}
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EXPORT_SYMBOL(pasic3_write_register); /* for leds-pasic3 */
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/*
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* read from a secondary register on the PASIC3
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*/
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u8 pasic3_read_register(struct device *dev, u32 reg)
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{
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struct pasic3_data *asic = dev_get_drvdata(dev);
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int bus_shift = asic->bus_shift;
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void __iomem *addr = asic->mapping + (REG_ADDR << bus_shift);
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void __iomem *data = asic->mapping + (REG_DATA << bus_shift);
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__raw_writeb(READ_MODE | reg, addr);
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return __raw_readb(data);
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}
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EXPORT_SYMBOL(pasic3_read_register); /* for leds-pasic3 */
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/*
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* LEDs
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*/
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static struct mfd_cell led_cell __initdata = {
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.name = "leds-pasic3",
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};
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/*
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* DS1WM
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*/
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static int ds1wm_enable(struct platform_device *pdev)
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{
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struct device *dev = pdev->dev.parent;
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int c;
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c = pasic3_read_register(dev, 0x28);
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pasic3_write_register(dev, 0x28, c & 0x7f);
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dev_dbg(dev, "DS1WM OWM_EN low (active) %02x\n", c & 0x7f);
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return 0;
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}
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static int ds1wm_disable(struct platform_device *pdev)
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{
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struct device *dev = pdev->dev.parent;
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int c;
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c = pasic3_read_register(dev, 0x28);
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pasic3_write_register(dev, 0x28, c | 0x80);
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dev_dbg(dev, "DS1WM OWM_EN high (inactive) %02x\n", c | 0x80);
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return 0;
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}
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static struct ds1wm_driver_data ds1wm_pdata = {
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.active_high = 0,
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.reset_recover_delay = 1,
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};
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static struct resource ds1wm_resources[] __initdata = {
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[0] = {
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.start = 0,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = 0,
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.end = 0,
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.flags = IORESOURCE_IRQ,
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},
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};
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static const struct mfd_cell ds1wm_cell __initconst = {
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.name = "ds1wm",
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.enable = ds1wm_enable,
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.disable = ds1wm_disable,
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.platform_data = &ds1wm_pdata,
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.pdata_size = sizeof(ds1wm_pdata),
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.num_resources = 2,
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.resources = ds1wm_resources,
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};
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static int __init pasic3_probe(struct platform_device *pdev)
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{
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struct pasic3_platform_data *pdata = dev_get_platdata(&pdev->dev);
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struct device *dev = &pdev->dev;
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struct pasic3_data *asic;
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struct resource *r;
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int ret;
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int irq = 0;
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r = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
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if (r) {
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ds1wm_resources[1].flags = IORESOURCE_IRQ | (r->flags &
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(IORESOURCE_IRQ_HIGHEDGE | IORESOURCE_IRQ_LOWEDGE));
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irq = r->start;
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}
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r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (!r)
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return -ENXIO;
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if (!request_mem_region(r->start, resource_size(r), "pasic3"))
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return -EBUSY;
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asic = devm_kzalloc(dev, sizeof(struct pasic3_data), GFP_KERNEL);
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if (!asic)
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return -ENOMEM;
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platform_set_drvdata(pdev, asic);
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asic->mapping = ioremap(r->start, resource_size(r));
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if (!asic->mapping) {
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dev_err(dev, "couldn't ioremap PASIC3\n");
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return -ENOMEM;
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}
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/* calculate bus shift from mem resource */
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asic->bus_shift = (resource_size(r) - 5) >> 3;
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if (pdata && pdata->clock_rate) {
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ds1wm_pdata.clock_rate = pdata->clock_rate;
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/* the first 5 PASIC3 registers control the DS1WM */
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ds1wm_resources[0].end = (5 << asic->bus_shift) - 1;
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ret = mfd_add_devices(&pdev->dev, pdev->id,
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&ds1wm_cell, 1, r, irq, NULL);
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if (ret < 0)
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dev_warn(dev, "failed to register DS1WM\n");
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}
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if (pdata && pdata->led_pdata) {
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led_cell.platform_data = pdata->led_pdata;
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led_cell.pdata_size = sizeof(struct pasic3_leds_machinfo);
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ret = mfd_add_devices(&pdev->dev, pdev->id, &led_cell, 1, r,
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0, NULL);
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if (ret < 0)
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dev_warn(dev, "failed to register LED device\n");
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}
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return 0;
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}
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static int pasic3_remove(struct platform_device *pdev)
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{
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struct pasic3_data *asic = platform_get_drvdata(pdev);
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struct resource *r;
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mfd_remove_devices(&pdev->dev);
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iounmap(asic->mapping);
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r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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release_mem_region(r->start, resource_size(r));
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return 0;
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}
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MODULE_ALIAS("platform:pasic3");
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static struct platform_driver pasic3_driver = {
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.driver = {
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.name = "pasic3",
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},
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.remove = pasic3_remove,
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};
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module_platform_driver_probe(pasic3_driver, pasic3_probe);
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MODULE_AUTHOR("Philipp Zabel <philipp.zabel@gmail.com>");
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MODULE_DESCRIPTION("Core driver for HTC PASIC3");
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MODULE_LICENSE("GPL");
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@ -1,54 +0,0 @@
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/*
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* HTC PASIC3 driver - LEDs and DS1WM
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*
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* Copyright (c) 2007 Philipp Zabel <philipp.zabel@gmail.com>
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive for
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* more details.
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*
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*/
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#ifndef __PASIC3_H
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#define __PASIC3_H
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#include <linux/platform_device.h>
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#include <linux/leds.h>
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extern void pasic3_write_register(struct device *dev, u32 reg, u8 val);
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extern u8 pasic3_read_register(struct device *dev, u32 reg);
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/*
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* mask for registers 0x20,0x21,0x22
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*/
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#define PASIC3_MASK_LED0 0x04
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#define PASIC3_MASK_LED1 0x08
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#define PASIC3_MASK_LED2 0x40
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/*
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* bits in register 0x06
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*/
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#define PASIC3_BIT2_LED0 0x08
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#define PASIC3_BIT2_LED1 0x10
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#define PASIC3_BIT2_LED2 0x20
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struct pasic3_led {
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struct led_classdev led;
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unsigned int hw_num;
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unsigned int bit2;
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unsigned int mask;
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struct pasic3_leds_machinfo *pdata;
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};
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struct pasic3_leds_machinfo {
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unsigned int num_leds;
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unsigned int power_gpio;
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struct pasic3_led *leds;
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};
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struct pasic3_platform_data {
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struct pasic3_leds_machinfo *led_pdata;
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unsigned int clock_rate;
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};
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#endif
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