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authorLinus Torvalds <torvalds@linux-foundation.org>2010-05-30 09:13:08 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-30 09:13:08 -0700
commit17d30ac077df253c12c7ba4db8d5cdacfceeb6d1 (patch)
tree991a18cd249d66c7e08faa1b93f014ad169f04f3
parente38c1e54ce51059a1aa8744c895762906cf43b32 (diff)
parent191211f50f35deb5b3b80bc7b620cfd4b0a4a2d9 (diff)
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (47 commits) mfd: Rename twl5031 sih modules mfd: Storage class for timberdale should be before const qualifier mfd: Remove unneeded and dangerous clearing of clientdata mfd: New AB8500 driver gpio: Fix inverted rdc321x gpio data out registers mfd: Change rdc321x resources flags to IORESOURCE_IO mfd: Move pcf50633 irq related functions to its own file. mfd: Use threaded irq for pcf50633 mfd: pcf50633-adc: Fix potential race in pcf50633_adc_sync_read mfd: Fix pcf50633 bitfield logic in interrupt handler gpio: rdc321x needs to select MFD_CORE mfd: Use menuconfig for quicker config editing ARM: AB3550 board configuration and irq for U300 mfd: AB3550 core driver mfd: AB3100 register access change to abx500 API mfd: Renamed ab3100.h to abx500.h gpio: Add TC35892 GPIO driver mfd: Add Toshiba's TC35892 MFD core mfd: Delay to mask tsc irq in max8925 mfd: Remove incorrect wm8350 kfree ...
-rw-r--r--arch/arm/mach-davinci/board-da850-evm.c19
-rw-r--r--arch/arm/mach-u300/i2c.c57
-rw-r--r--arch/arm/mach-u300/include/mach/irqs.h7
-rw-r--r--arch/arm/mach-ux500/board-mop500.c2
-rw-r--r--arch/x86/include/asm/rdc321x_defs.h12
-rw-r--r--drivers/gpio/Kconfig26
-rw-r--r--drivers/gpio/Makefile5
-rw-r--r--drivers/gpio/janz-ttl.c258
-rw-r--r--drivers/gpio/rdc321x-gpio.c246
-rw-r--r--drivers/gpio/tc35892-gpio.c381
-rw-r--r--drivers/input/touchscreen/Kconfig13
-rw-r--r--drivers/input/touchscreen/Makefile1
-rw-r--r--drivers/input/touchscreen/tps6507x-ts.c400
-rw-r--r--drivers/mfd/88pm860x-core.c6
-rw-r--r--drivers/mfd/88pm860x-i2c.c2
-rw-r--r--drivers/mfd/Kconfig87
-rw-r--r--drivers/mfd/Makefile13
-rw-r--r--drivers/mfd/ab3100-core.c99
-rw-r--r--drivers/mfd/ab3100-otp.c13
-rw-r--r--drivers/mfd/ab3550-core.c1401
-rw-r--r--drivers/mfd/ab4500-core.c209
-rw-r--r--drivers/mfd/ab8500-core.c444
-rw-r--r--drivers/mfd/ab8500-spi.c133
-rw-r--r--drivers/mfd/abx500-core.c157
-rw-r--r--drivers/mfd/da903x.c1
-rw-r--r--drivers/mfd/janz-cmodio.c304
-rw-r--r--drivers/mfd/max8925-core.c7
-rw-r--r--drivers/mfd/max8925-i2c.c2
-rw-r--r--drivers/mfd/menelaus.c3
-rw-r--r--drivers/mfd/mfd-core.c2
-rw-r--r--drivers/mfd/pcf50633-adc.c39
-rw-r--r--drivers/mfd/pcf50633-core.c345
-rw-r--r--drivers/mfd/pcf50633-irq.c318
-rw-r--r--drivers/mfd/rdc321x-southbridge.c123
-rw-r--r--drivers/mfd/t7l66xb.c3
-rw-r--r--drivers/mfd/tc35892.c347
-rw-r--r--drivers/mfd/timberdale.c156
-rw-r--r--drivers/mfd/timberdale.h16
-rw-r--r--drivers/mfd/tps65010.c2
-rw-r--r--drivers/mfd/tps6507x.c159
-rw-r--r--drivers/mfd/twl4030-irq.c11
-rw-r--r--drivers/mfd/wm831x-core.c112
-rw-r--r--drivers/mfd/wm831x-irq.c18
-rw-r--r--drivers/mfd/wm8350-i2c.c6
-rw-r--r--drivers/mfd/wm8400-core.c4
-rw-r--r--drivers/net/can/Kconfig10
-rw-r--r--drivers/net/can/Makefile1
-rw-r--r--drivers/net/can/janz-ican3.c1830
-rw-r--r--drivers/regulator/ab3100.c35
-rw-r--r--drivers/regulator/tps6507x-regulator.c373
-rw-r--r--drivers/rtc/rtc-ab3100.c41
-rw-r--r--drivers/watchdog/rdc321x_wdt.c53
-rw-r--r--include/linux/input/tps6507x-ts.h24
-rw-r--r--include/linux/mfd/88pm860x.h4
-rw-r--r--include/linux/mfd/ab4500.h262
-rw-r--r--include/linux/mfd/ab8500.h128
-rw-r--r--include/linux/mfd/abx500.h (renamed from include/linux/mfd/ab3100.h)134
-rw-r--r--include/linux/mfd/janz.h54
-rw-r--r--include/linux/mfd/rdc321x.h26
-rw-r--r--include/linux/mfd/tc35892.h132
-rw-r--r--include/linux/mfd/tps6507x.h169
-rw-r--r--include/linux/mfd/wm831x/core.h5
62 files changed, 7999 insertions, 1251 deletions
diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c
index abd04932917..2ec3095ffb7 100644
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -17,6 +17,7 @@
#include <linux/i2c.h>
#include <linux/i2c/at24.h>
#include <linux/i2c/pca953x.h>
+#include <linux/mfd/tps6507x.h>
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
@@ -24,6 +25,8 @@
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/regulator/machine.h>
+#include <linux/mfd/tps6507x.h>
+#include <linux/input/tps6507x-ts.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
@@ -533,10 +536,24 @@ struct regulator_init_data tps65070_regulator_data[] = {
},
};
+static struct touchscreen_init_data tps6507x_touchscreen_data = {
+ .poll_period = 30, /* ms between touch samples */
+ .min_pressure = 0x30, /* minimum pressure to trigger touch */
+ .vref = 0, /* turn off vref when not using A/D */
+ .vendor = 0, /* /sys/class/input/input?/id/vendor */
+ .product = 65070, /* /sys/class/input/input?/id/product */
+ .version = 0x100, /* /sys/class/input/input?/id/version */
+};
+
+static struct tps6507x_board tps_board = {
+ .tps6507x_pmic_init_data = &tps65070_regulator_data[0],
+ .tps6507x_ts_init_data = &tps6507x_touchscreen_data,
+};
+
static struct i2c_board_info __initdata da850evm_tps65070_info[] = {
{
I2C_BOARD_INFO("tps6507x", 0x48),
- .platform_data = &tps65070_regulator_data[0],
+ .platform_data = &tps_board,
},
};
diff --git a/arch/arm/mach-u300/i2c.c b/arch/arm/mach-u300/i2c.c
index c73ed06b606..f0394baa11f 100644
--- a/arch/arm/mach-u300/i2c.c
+++ b/arch/arm/mach-u300/i2c.c
@@ -9,7 +9,7 @@
*/
#include <linux/kernel.h>
#include <linux/i2c.h>
-#include <linux/mfd/ab3100.h>
+#include <linux/mfd/abx500.h>
#include <linux/regulator/machine.h>
#include <linux/amba/bus.h>
#include <mach/irqs.h>
@@ -46,6 +46,7 @@
/* BUCK SLEEP 0xAC: 1.05V, Not used, SLEEP_A and B, Not used */
#define BUCK_SLEEP_SETTING 0xAC
+#ifdef CONFIG_AB3100_CORE
static struct regulator_consumer_supply supply_ldo_c[] = {
{
.dev_name = "ab3100-codec",
@@ -253,14 +254,68 @@ static struct ab3100_platform_data ab3100_plf_data = {
LDO_D_SETTING,
},
};
+#endif
+
+#ifdef CONFIG_AB3550_CORE
+static struct abx500_init_settings ab3550_init_settings[] = {
+ {
+ .bank = 0,
+ .reg = AB3550_IMR1,
+ .setting = 0xff
+ },
+ {
+ .bank = 0,
+ .reg = AB3550_IMR2,
+ .setting = 0xff
+ },
+ {
+ .bank = 0,
+ .reg = AB3550_IMR3,
+ .setting = 0xff
+ },
+ {
+ .bank = 0,
+ .reg = AB3550_IMR4,
+ .setting = 0xff
+ },
+ {
+ .bank = 0,
+ .reg = AB3550_IMR5,
+ /* The two most significant bits are not used */
+ .setting = 0x3f
+ },
+};
+
+static struct ab3550_platform_data ab3550_plf_data = {
+ .irq = {
+ .base = IRQ_AB3550_BASE,
+ .count = (IRQ_AB3550_END - IRQ_AB3550_BASE + 1),
+ },
+ .dev_data = {
+ },
+ .init_settings = ab3550_init_settings,
+ .init_settings_sz = ARRAY_SIZE(ab3550_init_settings),
+};
+#endif
static struct i2c_board_info __initdata bus0_i2c_board_info[] = {
+#if defined(CONFIG_AB3550_CORE)
+ {
+ .type = "ab3550",
+ .addr = 0x4A,
+ .irq = IRQ_U300_IRQ0_EXT,
+ .platform_data = &ab3550_plf_data,
+ },
+#elif defined(CONFIG_AB3100_CORE)
{
.type = "ab3100",
.addr = 0x48,
.irq = IRQ_U300_IRQ0_EXT,
.platform_data = &ab3100_plf_data,
},
+#else
+ { },
+#endif
};
static struct i2c_board_info __initdata bus1_i2c_board_info[] = {
diff --git a/arch/arm/mach-u300/include/mach/irqs.h b/arch/arm/mach-u300/include/mach/irqs.h
index a6867b12773..09b1b28fa8f 100644
--- a/arch/arm/mach-u300/include/mach/irqs.h
+++ b/arch/arm/mach-u300/include/mach/irqs.h
@@ -109,6 +109,13 @@
#define U300_NR_IRQS 48
#endif
+#ifdef CONFIG_AB3550_CORE
+#define IRQ_AB3550_BASE (U300_NR_IRQS)
+#define IRQ_AB3550_END (IRQ_AB3550_BASE + 37)
+
+#define NR_IRQS (IRQ_AB3550_END + 1)
+#else
#define NR_IRQS U300_NR_IRQS
+#endif
#endif
diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c
index 072196c5726..bb8d7b77181 100644
--- a/arch/arm/mach-ux500/board-mop500.c
+++ b/arch/arm/mach-ux500/board-mop500.c
@@ -50,7 +50,7 @@ struct pl022_config_chip ab4500_chip_info = {
static struct spi_board_info u8500_spi_devices[] = {
{
- .modalias = "ab4500",
+ .modalias = "ab8500",
.controller_data = &ab4500_chip_info,
.max_speed_hz = 12000000,
.bus_num = 0,
diff --git a/arch/x86/include/asm/rdc321x_defs.h b/arch/x86/include/asm/rdc321x_defs.h
deleted file mode 100644
index c8e9c8bed3d..00000000000
--- a/arch/x86/include/asm/rdc321x_defs.h
+++ /dev/null
@@ -1,12 +0,0 @@
-#define PFX "rdc321x: "
-
-/* General purpose configuration and data registers */
-#define RDC3210_CFGREG_ADDR 0x0CF8
-#define RDC3210_CFGREG_DATA 0x0CFC
-
-#define RDC321X_GPIO_CTRL_REG1 0x48
-#define RDC321X_GPIO_CTRL_REG2 0x84
-#define RDC321X_GPIO_DATA_REG1 0x4c
-#define RDC321X_GPIO_DATA_REG2 0x88
-
-#define RDC321X_MAX_GPIO 58
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 4fd0f276df5..724038dab4c 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -195,6 +195,13 @@ config GPIO_PCF857X
This driver provides an in-kernel interface to those GPIOs using
platform-neutral GPIO calls.
+config GPIO_TC35892
+ bool "TC35892 GPIOs"
+ depends on MFD_TC35892
+ help
+ This enables support for the GPIOs found on the TC35892
+ I/O Expander.
+
config GPIO_TWL4030
tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
depends on TWL4030_CORE
@@ -282,6 +289,15 @@ config GPIO_TIMBERDALE
---help---
Add support for the GPIO IP in the timberdale FPGA.
+config GPIO_RDC321X
+ tristate "RDC R-321x GPIO support"
+ depends on PCI && GPIOLIB
+ select MFD_CORE
+ select MFD_RDC321X
+ help
+ Support for the RDC R321x SoC GPIOs over southbridge
+ PCI configuration space.
+
comment "SPI GPIO expanders:"
config GPIO_MAX7301
@@ -317,4 +333,14 @@ config GPIO_UCB1400
To compile this driver as a module, choose M here: the
module will be called ucb1400_gpio.
+comment "MODULbus GPIO expanders:"
+
+config GPIO_JANZ_TTL
+ tristate "Janz VMOD-TTL Digital IO Module"
+ depends on MFD_JANZ_CMODIO
+ help
+ This enables support for the Janz VMOD-TTL Digital IO module.
+ This driver provides support for driving the pins in output
+ mode only. Input mode is not supported.
+
endif
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 10f3f8d958b..51c3cdd41b5 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -16,6 +16,7 @@ obj-$(CONFIG_GPIO_MCP23S08) += mcp23s08.o
obj-$(CONFIG_GPIO_PCA953X) += pca953x.o
obj-$(CONFIG_GPIO_PCF857X) += pcf857x.o
obj-$(CONFIG_GPIO_PL061) += pl061.o
+obj-$(CONFIG_GPIO_TC35892) += tc35892-gpio.o
obj-$(CONFIG_GPIO_TIMBERDALE) += timbgpio.o
obj-$(CONFIG_GPIO_TWL4030) += twl4030-gpio.o
obj-$(CONFIG_GPIO_UCB1400) += ucb1400_gpio.o
@@ -27,4 +28,6 @@ obj-$(CONFIG_GPIO_VR41XX) += vr41xx_giu.o
obj-$(CONFIG_GPIO_WM831X) += wm831x-gpio.o
obj-$(CONFIG_GPIO_WM8350) += wm8350-gpiolib.o
obj-$(CONFIG_GPIO_WM8994) += wm8994-gpio.o
-obj-$(CONFIG_GPIO_SCH) += sch_gpio.o \ No newline at end of file
+obj-$(CONFIG_GPIO_SCH) += sch_gpio.o
+obj-$(CONFIG_GPIO_RDC321X) += rdc321x-gpio.o
+obj-$(CONFIG_GPIO_JANZ_TTL) += janz-ttl.o
diff --git a/drivers/gpio/janz-ttl.c b/drivers/gpio/janz-ttl.c
new file mode 100644
index 00000000000..813ac077e5d
--- /dev/null
+++ b/drivers/gpio/janz-ttl.c
@@ -0,0 +1,258 @@
+/*
+ * Janz MODULbus VMOD-TTL GPIO Driver
+ *
+ * Copyright (c) 2010 Ira W. Snyder <iws@ovro.caltech.edu>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+#include <linux/slab.h>
+
+#include <linux/mfd/janz.h>
+
+#define DRV_NAME "janz-ttl"
+
+#define PORTA_DIRECTION 0x23
+#define PORTB_DIRECTION 0x2B
+#define PORTC_DIRECTION 0x06
+#define PORTA_IOCTL 0x24
+#define PORTB_IOCTL 0x2C
+#define PORTC_IOCTL 0x07
+
+#define MASTER_INT_CTL 0x00
+#define MASTER_CONF_CTL 0x01
+
+#define CONF_PAE (1 << 2)
+#define CONF_PBE (1 << 7)
+#define CONF_PCE (1 << 4)
+
+struct ttl_control_regs {
+ __be16 portc;
+ __be16 portb;
+ __be16 porta;
+ __be16 control;
+};
+
+struct ttl_module {
+ struct gpio_chip gpio;
+
+ /* base address of registers */
+ struct ttl_control_regs __iomem *regs;
+
+ u8 portc_shadow;
+ u8 portb_shadow;
+ u8 porta_shadow;
+
+ spinlock_t lock;
+};
+
+static int ttl_get_value(struct gpio_chip *gpio, unsigned offset)
+{
+ struct ttl_module *mod = dev_get_drvdata(gpio->dev);
+ u8 *shadow;
+ int ret;
+
+ if (offset < 8) {
+ shadow = &mod->porta_shadow;
+ } else if (offset < 16) {
+ shadow = &mod->portb_shadow;
+ offset -= 8;
+ } else {
+ shadow = &mod->portc_shadow;
+ offset -= 16;
+ }
+
+ spin_lock(&mod->lock);
+ ret = *shadow & (1 << offset);
+ spin_unlock(&mod->lock);
+ return ret;
+}
+
+static void ttl_set_value(struct gpio_chip *gpio, unsigned offset, int value)
+{
+ struct ttl_module *mod = dev_get_drvdata(gpio->dev);
+ void __iomem *port;
+ u8 *shadow;
+
+ if (offset < 8) {
+ port = &mod->regs->porta;
+ shadow = &mod->porta_shadow;
+ } else if (offset < 16) {
+ port = &mod->regs->portb;
+ shadow = &mod->portb_shadow;
+ offset -= 8;
+ } else {
+ port = &mod->regs->portc;
+ shadow = &mod->portc_shadow;
+ offset -= 16;
+ }
+
+ spin_lock(&mod->lock);
+ if (value)
+ *shadow |= (1 << offset);
+ else
+ *shadow &= ~(1 << offset);
+
+ iowrite16be(*shadow, port);
+ spin_unlock(&mod->lock);
+}
+
+static void __devinit ttl_write_reg(struct ttl_module *mod, u8 reg, u16 val)
+{
+ iowrite16be(reg, &mod->regs->control);
+ iowrite16be(val, &mod->regs->control);
+}
+
+static void __devinit ttl_setup_device(struct ttl_module *mod)
+{
+ /* reset the device to a known state */
+ iowrite16be(0x0000, &mod->regs->control);
+ iowrite16be(0x0001, &mod->regs->control);
+ iowrite16be(0x0000, &mod->regs->control);
+
+ /* put all ports in open-drain mode */
+ ttl_write_reg(mod, PORTA_IOCTL, 0x00ff);
+ ttl_write_reg(mod, PORTB_IOCTL, 0x00ff);
+ ttl_write_reg(mod, PORTC_IOCTL, 0x000f);
+
+ /* set all ports as outputs */
+ ttl_write_reg(mod, PORTA_DIRECTION, 0x0000);
+ ttl_write_reg(mod, PORTB_DIRECTION, 0x0000);
+ ttl_write_reg(mod, PORTC_DIRECTION, 0x0000);
+
+ /* set all ports to drive zeroes */
+ iowrite16be(0x0000, &mod->regs->porta);
+ iowrite16be(0x0000, &mod->regs->portb);
+ iowrite16be(0x0000, &mod->regs->portc);
+
+ /* enable all ports */
+ ttl_write_reg(mod, MASTER_CONF_CTL, CONF_PAE | CONF_PBE | CONF_PCE);
+}
+
+static int __devinit ttl_probe(struct platform_device *pdev)
+{
+ struct janz_platform_data *pdata;
+ struct device *dev = &pdev->dev;
+ struct ttl_module *mod;
+ struct gpio_chip *gpio;
+ struct resource *res;
+ int ret;
+
+ pdata = pdev->dev.platform_data;
+ if (!pdata) {
+ dev_err(dev, "no platform data\n");
+ ret = -ENXIO;
+ goto out_return;
+ }
+
+ mod = kzalloc(sizeof(*mod), GFP_KERNEL);
+ if (!mod) {
+ dev_err(dev, "unable to allocate private data\n");
+ ret = -ENOMEM;
+ goto out_return;
+ }
+
+ platform_set_drvdata(pdev, mod);
+ spin_lock_init(&mod->lock);
+
+ /* get access to the MODULbus registers for this module */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(dev, "MODULbus registers not found\n");
+ ret = -ENODEV;
+ goto out_free_mod;
+ }
+
+ mod->regs = ioremap(res->start, resource_size(res));
+ if (!mod->regs) {
+ dev_err(dev, "MODULbus registers not ioremap\n");
+ ret = -ENOMEM;
+ goto out_free_mod;
+ }
+
+ ttl_setup_device(mod);
+
+ /* Initialize the GPIO data structures */
+ gpio = &mod->gpio;
+ gpio->dev = &pdev->dev;
+ gpio->label = pdev->name;
+ gpio->get = ttl_get_value;
+ gpio->set = ttl_set_value;
+ gpio->owner = THIS_MODULE;
+
+ /* request dynamic allocation */
+ gpio->base = -1;
+ gpio->ngpio = 20;
+
+ ret = gpiochip_add(gpio);
+ if (ret) {
+ dev_err(dev, "unable to add GPIO chip\n");
+ goto out_iounmap_regs;
+ }
+
+ dev_info(&pdev->dev, "module %d: registered GPIO device\n",
+ pdata->modno);
+ return 0;
+
+out_iounmap_regs:
+ iounmap(mod->regs);
+out_free_mod:
+ kfree(mod);
+out_return:
+ return ret;
+}
+
+static int __devexit ttl_remove(struct platform_device *pdev)
+{
+ struct ttl_module *mod = platform_get_drvdata(pdev);
+ struct device *dev = &pdev->dev;
+ int ret;
+
+ ret = gpiochip_remove(&mod->gpio);
+ if (ret) {
+ dev_err(dev, "unable to remove GPIO chip\n");
+ return ret;
+ }
+
+ iounmap(mod->regs);
+ kfree(mod);
+ return 0;
+}
+
+static struct platform_driver ttl_driver = {
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ },
+ .probe = ttl_probe,
+ .remove = __devexit_p(ttl_remove),
+};
+
+static int __init ttl_init(void)
+{
+ return platform_driver_register(&ttl_driver);
+}
+
+static void __exit ttl_exit(void)
+{
+ platform_driver_unregister(&ttl_driver);
+}
+
+MODULE_AUTHOR("Ira W. Snyder <iws@ovro.caltech.edu>");
+MODULE_DESCRIPTION("Janz MODULbus VMOD-TTL Driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:janz-ttl");
+
+module_init(ttl_init);
+module_exit(ttl_exit);
diff --git a/drivers/gpio/rdc321x-gpio.c b/drivers/gpio/rdc321x-gpio.c
new file mode 100644
index 00000000000..2762698e020
--- /dev/null
+++ b/drivers/gpio/rdc321x-gpio.c
@@ -0,0 +1,246 @@
+/*
+ * RDC321x GPIO driver
+ *
+ * Copyright (C) 2008, Volker Weiss <dev@tintuc.de>
+ * Copyright (C) 2007-2010 Florian Fainelli <florian@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/platform_device.h>
+#include <linux/pci.h>
+#include <linux/gpio.h>
+#include <linux/mfd/rdc321x.h>
+#include <linux/slab.h>
+
+struct rdc321x_gpio {
+ spinlock_t lock;
+ struct pci_dev *sb_pdev;
+ u32 data_reg[2];
+ int reg1_ctrl_base;
+ int reg1_data_base;
+ int reg2_ctrl_base;
+ int reg2_data_base;
+ struct gpio_chip chip;
+};
+
+/* read GPIO pin */
+static int rdc_gpio_get_value(struct gpio_chip *chip, unsigned gpio)
+{
+ struct rdc321x_gpio *gpch;
+ u32 value = 0;
+ int reg;
+
+ gpch = container_of(chip, struct rdc321x_gpio, chip);
+ reg = gpio < 32 ? gpch->reg1_data_base : gpch->reg2_data_base;
+
+ spin_lock(&gpch->lock);
+ pci_write_config_dword(gpch->sb_pdev, reg,
+ gpch->data_reg[gpio < 32 ? 0 : 1]);
+ pci_read_config_dword(gpch->sb_pdev, reg, &value);
+ spin_unlock(&gpch->lock);
+
+ return (1 << (gpio & 0x1f)) & value ? 1 : 0;
+}
+
+static void rdc_gpio_set_value_impl(struct gpio_chip *chip,
+ unsigned gpio, int value)
+{
+ struct rdc321x_gpio *gpch;
+ int reg = (gpio < 32) ? 0 : 1;
+
+ gpch = container_of(chip, struct rdc321x_gpio, chip);
+
+ if (value)
+ gpch->data_reg[reg] |= 1 << (gpio & 0x1f);
+ else
+ gpch->data_reg[reg] &= ~(1 << (gpio & 0x1f));
+
+ pci_write_config_dword(gpch->sb_pdev,
+ reg ? gpch->reg2_data_base : gpch->reg1_data_base,
+ gpch->data_reg[reg]);
+}
+
+/* set GPIO pin to value */
+static void rdc_gpio_set_value(struct gpio_chip *chip,
+ unsigned gpio, int value)
+{
+ struct rdc321x_gpio *gpch;
+
+ gpch = container_of(chip, struct rdc321x_gpio, chip);
+ spin_lock(&gpch->lock);
+ rdc_gpio_set_value_impl(chip, gpio, value);
+ spin_unlock(&gpch->lock);
+}
+
+static int rdc_gpio_config(struct gpio_chip *chip,
+ unsigned gpio, int value)
+{
+ struct rdc321x_gpio *gpch;
+ int err;
+ u32 reg;
+
+ gpch = container_of(chip, struct rdc321x_gpio, chip);
+
+ spin_lock(&gpch->lock);
+ err = pci_read_config_dword(gpch->sb_pdev, gpio < 32 ?