This enables support for the GPIOs found on the STMPE I/O
Expanders.
-config GPIO_TC35892
- bool "TC35892 GPIOs"
- depends on MFD_TC35892
+config GPIO_TC3589X
+ bool "TC3589X GPIOs"
+ depends on MFD_TC3589X
help
- This enables support for the GPIOs found on the TC35892
+ This enables support for the GPIOs found on the TC3589X
I/O Expander.
config GPIO_TWL4030
obj-$(CONFIG_GPIO_PCH) += pch_gpio.o
obj-$(CONFIG_GPIO_PL061) += pl061.o
obj-$(CONFIG_GPIO_STMPE) += stmpe-gpio.o
-obj-$(CONFIG_GPIO_TC35892) += tc35892-gpio.o
+obj-$(CONFIG_GPIO_TC3589X) += tc3589x-gpio.o
obj-$(CONFIG_GPIO_TIMBERDALE) += timbgpio.o
obj-$(CONFIG_GPIO_TWL4030) += twl4030-gpio.o
obj-$(CONFIG_GPIO_UCB1400) += ucb1400_gpio.o
+++ /dev/null
-/*
- * Copyright (C) ST-Ericsson SA 2010
- *
- * License Terms: GNU General Public License, version 2
- * Author: Hanumath Prasad <hanumath.prasad@stericsson.com> for ST-Ericsson
- * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/gpio.h>
-#include <linux/irq.h>
-#include <linux/interrupt.h>
-#include <linux/mfd/tc3589x.h>
-
-/*
- * These registers are modified under the irq bus lock and cached to avoid
- * unnecessary writes in bus_sync_unlock.
- */
-enum { REG_IBE, REG_IEV, REG_IS, REG_IE };
-
-#define CACHE_NR_REGS 4
-#define CACHE_NR_BANKS 3
-
-struct tc35892_gpio {
- struct gpio_chip chip;
- struct tc35892 *tc35892;
- struct device *dev;
- struct mutex irq_lock;
-
- int irq_base;
-
- /* Caches of interrupt control registers for bus_lock */
- u8 regs[CACHE_NR_REGS][CACHE_NR_BANKS];
- u8 oldregs[CACHE_NR_REGS][CACHE_NR_BANKS];
-};
-
-static inline struct tc35892_gpio *to_tc35892_gpio(struct gpio_chip *chip)
-{
- return container_of(chip, struct tc35892_gpio, chip);
-}
-
-static int tc35892_gpio_get(struct gpio_chip *chip, unsigned offset)
-{
- struct tc35892_gpio *tc35892_gpio = to_tc35892_gpio(chip);
- struct tc35892 *tc35892 = tc35892_gpio->tc35892;
- u8 reg = TC35892_GPIODATA0 + (offset / 8) * 2;
- u8 mask = 1 << (offset % 8);
- int ret;
-
- ret = tc35892_reg_read(tc35892, reg);
- if (ret < 0)
- return ret;
-
- return ret & mask;
-}
-
-static void tc35892_gpio_set(struct gpio_chip *chip, unsigned offset, int val)
-{
- struct tc35892_gpio *tc35892_gpio = to_tc35892_gpio(chip);
- struct tc35892 *tc35892 = tc35892_gpio->tc35892;
- u8 reg = TC35892_GPIODATA0 + (offset / 8) * 2;
- unsigned pos = offset % 8;
- u8 data[] = {!!val << pos, 1 << pos};
-
- tc35892_block_write(tc35892, reg, ARRAY_SIZE(data), data);
-}
-
-static int tc35892_gpio_direction_output(struct gpio_chip *chip,
- unsigned offset, int val)
-{
- struct tc35892_gpio *tc35892_gpio = to_tc35892_gpio(chip);
- struct tc35892 *tc35892 = tc35892_gpio->tc35892;
- u8 reg = TC35892_GPIODIR0 + offset / 8;
- unsigned pos = offset % 8;
-
- tc35892_gpio_set(chip, offset, val);
-
- return tc35892_set_bits(tc35892, reg, 1 << pos, 1 << pos);
-}
-
-static int tc35892_gpio_direction_input(struct gpio_chip *chip,
- unsigned offset)
-{
- struct tc35892_gpio *tc35892_gpio = to_tc35892_gpio(chip);
- struct tc35892 *tc35892 = tc35892_gpio->tc35892;
- u8 reg = TC35892_GPIODIR0 + offset / 8;
- unsigned pos = offset % 8;
-
- return tc35892_set_bits(tc35892, reg, 1 << pos, 0);
-}
-
-static int tc35892_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
-{
- struct tc35892_gpio *tc35892_gpio = to_tc35892_gpio(chip);
-
- return tc35892_gpio->irq_base + offset;
-}
-
-static struct gpio_chip template_chip = {
- .label = "tc35892",
- .owner = THIS_MODULE,
- .direction_input = tc35892_gpio_direction_input,
- .get = tc35892_gpio_get,
- .direction_output = tc35892_gpio_direction_output,
- .set = tc35892_gpio_set,
- .to_irq = tc35892_gpio_to_irq,
- .can_sleep = 1,
-};
-
-static int tc35892_gpio_irq_set_type(unsigned int irq, unsigned int type)
-{
- struct tc35892_gpio *tc35892_gpio = get_irq_chip_data(irq);
- int offset = irq - tc35892_gpio->irq_base;
- int regoffset = offset / 8;
- int mask = 1 << (offset % 8);
-
- if (type == IRQ_TYPE_EDGE_BOTH) {
- tc35892_gpio->regs[REG_IBE][regoffset] |= mask;
- return 0;
- }
-
- tc35892_gpio->regs[REG_IBE][regoffset] &= ~mask;
-
- if (type == IRQ_TYPE_LEVEL_LOW || type == IRQ_TYPE_LEVEL_HIGH)
- tc35892_gpio->regs[REG_IS][regoffset] |= mask;
- else
- tc35892_gpio->regs[REG_IS][regoffset] &= ~mask;
-
- if (type == IRQ_TYPE_EDGE_RISING || type == IRQ_TYPE_LEVEL_HIGH)
- tc35892_gpio->regs[REG_IEV][regoffset] |= mask;
- else
- tc35892_gpio->regs[REG_IEV][regoffset] &= ~mask;
-
- return 0;
-}
-
-static void tc35892_gpio_irq_lock(unsigned int irq)
-{
- struct tc35892_gpio *tc35892_gpio = get_irq_chip_data(irq);
-
- mutex_lock(&tc35892_gpio->irq_lock);
-}
-
-static void tc35892_gpio_irq_sync_unlock(unsigned int irq)
-{
- struct tc35892_gpio *tc35892_gpio = get_irq_chip_data(irq);
- struct tc35892 *tc35892 = tc35892_gpio->tc35892;
- static const u8 regmap[] = {
- [REG_IBE] = TC35892_GPIOIBE0,
- [REG_IEV] = TC35892_GPIOIEV0,
- [REG_IS] = TC35892_GPIOIS0,
- [REG_IE] = TC35892_GPIOIE0,
- };
- int i, j;
-
- for (i = 0; i < CACHE_NR_REGS; i++) {
- for (j = 0; j < CACHE_NR_BANKS; j++) {
- u8 old = tc35892_gpio->oldregs[i][j];
- u8 new = tc35892_gpio->regs[i][j];
-
- if (new == old)
- continue;
-
- tc35892_gpio->oldregs[i][j] = new;
- tc35892_reg_write(tc35892, regmap[i] + j * 8, new);
- }
- }
-
- mutex_unlock(&tc35892_gpio->irq_lock);
-}
-
-static void tc35892_gpio_irq_mask(unsigned int irq)
-{
- struct tc35892_gpio *tc35892_gpio = get_irq_chip_data(irq);
- int offset = irq - tc35892_gpio->irq_base;
- int regoffset = offset / 8;
- int mask = 1 << (offset % 8);
-
- tc35892_gpio->regs[REG_IE][regoffset] &= ~mask;
-}
-
-static void tc35892_gpio_irq_unmask(unsigned int irq)
-{
- struct tc35892_gpio *tc35892_gpio = get_irq_chip_data(irq);
- int offset = irq - tc35892_gpio->irq_base;
- int regoffset = offset / 8;
- int mask = 1 << (offset % 8);
-
- tc35892_gpio->regs[REG_IE][regoffset] |= mask;
-}
-
-static struct irq_chip tc35892_gpio_irq_chip = {
- .name = "tc35892-gpio",
- .bus_lock = tc35892_gpio_irq_lock,
- .bus_sync_unlock = tc35892_gpio_irq_sync_unlock,
- .mask = tc35892_gpio_irq_mask,
- .unmask = tc35892_gpio_irq_unmask,
- .set_type = tc35892_gpio_irq_set_type,
-};
-
-static irqreturn_t tc35892_gpio_irq(int irq, void *dev)
-{
- struct tc35892_gpio *tc35892_gpio = dev;
- struct tc35892 *tc35892 = tc35892_gpio->tc35892;
- u8 status[CACHE_NR_BANKS];
- int ret;
- int i;
-
- ret = tc35892_block_read(tc35892, TC35892_GPIOMIS0,
- ARRAY_SIZE(status), status);
- if (ret < 0)
- return IRQ_NONE;
-
- for (i = 0; i < ARRAY_SIZE(status); i++) {
- unsigned int stat = status[i];
- if (!stat)
- continue;
-
- while (stat) {
- int bit = __ffs(stat);
- int line = i * 8 + bit;
-
- handle_nested_irq(tc35892_gpio->irq_base + line);
- stat &= ~(1 << bit);
- }
-
- tc35892_reg_write(tc35892, TC35892_GPIOIC0 + i, status[i]);
- }
-
- return IRQ_HANDLED;
-}
-
-static int tc35892_gpio_irq_init(struct tc35892_gpio *tc35892_gpio)
-{
- int base = tc35892_gpio->irq_base;
- int irq;
-
- for (irq = base; irq < base + tc35892_gpio->chip.ngpio; irq++) {
- set_irq_chip_data(irq, tc35892_gpio);
- set_irq_chip_and_handler(irq, &tc35892_gpio_irq_chip,
- handle_simple_irq);
- set_irq_nested_thread(irq, 1);
-#ifdef CONFIG_ARM
- set_irq_flags(irq, IRQF_VALID);
-#else
- set_irq_noprobe(irq);
-#endif
- }
-
- return 0;
-}
-
-static void tc35892_gpio_irq_remove(struct tc35892_gpio *tc35892_gpio)
-{
- int base = tc35892_gpio->irq_base;
- int irq;
-
- for (irq = base; irq < base + tc35892_gpio->chip.ngpio; irq++) {
-#ifdef CONFIG_ARM
- set_irq_flags(irq, 0);
-#endif
- set_irq_chip_and_handler(irq, NULL, NULL);
- set_irq_chip_data(irq, NULL);
- }
-}
-
-static int __devinit tc35892_gpio_probe(struct platform_device *pdev)
-{
- struct tc35892 *tc35892 = dev_get_drvdata(pdev->dev.parent);
- struct tc35892_gpio_platform_data *pdata;
- struct tc35892_gpio *tc35892_gpio;
- int ret;
- int irq;
-
- pdata = tc35892->pdata->gpio;
- if (!pdata)
- return -ENODEV;
-
- irq = platform_get_irq(pdev, 0);
- if (irq < 0)
- return irq;
-
- tc35892_gpio = kzalloc(sizeof(struct tc35892_gpio), GFP_KERNEL);
- if (!tc35892_gpio)
- return -ENOMEM;
-
- mutex_init(&tc35892_gpio->irq_lock);
-
- tc35892_gpio->dev = &pdev->dev;
- tc35892_gpio->tc35892 = tc35892;
-
- tc35892_gpio->chip = template_chip;
- tc35892_gpio->chip.ngpio = tc35892->num_gpio;
- tc35892_gpio->chip.dev = &pdev->dev;
- tc35892_gpio->chip.base = pdata->gpio_base;
-
- tc35892_gpio->irq_base = tc35892->irq_base + TC35892_INT_GPIO(0);
-
- /* Bring the GPIO module out of reset */
- ret = tc35892_set_bits(tc35892, TC35892_RSTCTRL,
- TC35892_RSTCTRL_GPIRST, 0);
- if (ret < 0)
- goto out_free;
-
- ret = tc35892_gpio_irq_init(tc35892_gpio);
- if (ret)
- goto out_free;
-
- ret = request_threaded_irq(irq, NULL, tc35892_gpio_irq, IRQF_ONESHOT,
- "tc35892-gpio", tc35892_gpio);
- if (ret) {
- dev_err(&pdev->dev, "unable to get irq: %d\n", ret);
- goto out_removeirq;
- }
-
- ret = gpiochip_add(&tc35892_gpio->chip);
- if (ret) {
- dev_err(&pdev->dev, "unable to add gpiochip: %d\n", ret);
- goto out_freeirq;
- }
-
- if (pdata->setup)
- pdata->setup(tc35892, tc35892_gpio->chip.base);
-
- platform_set_drvdata(pdev, tc35892_gpio);
-
- return 0;
-
-out_freeirq:
- free_irq(irq, tc35892_gpio);
-out_removeirq:
- tc35892_gpio_irq_remove(tc35892_gpio);
-out_free:
- kfree(tc35892_gpio);
- return ret;
-}
-
-static int __devexit tc35892_gpio_remove(struct platform_device *pdev)
-{
- struct tc35892_gpio *tc35892_gpio = platform_get_drvdata(pdev);
- struct tc35892 *tc35892 = tc35892_gpio->tc35892;
- struct tc35892_gpio_platform_data *pdata = tc35892->pdata->gpio;
- int irq = platform_get_irq(pdev, 0);
- int ret;
-
- if (pdata->remove)
- pdata->remove(tc35892, tc35892_gpio->chip.base);
-
- ret = gpiochip_remove(&tc35892_gpio->chip);
- if (ret < 0) {
- dev_err(tc35892_gpio->dev,
- "unable to remove gpiochip: %d\n", ret);
- return ret;
- }
-
- free_irq(irq, tc35892_gpio);
- tc35892_gpio_irq_remove(tc35892_gpio);
-
- platform_set_drvdata(pdev, NULL);
- kfree(tc35892_gpio);
-
- return 0;
-}
-
-static struct platform_driver tc35892_gpio_driver = {
- .driver.name = "tc35892-gpio",
- .driver.owner = THIS_MODULE,
- .probe = tc35892_gpio_probe,
- .remove = __devexit_p(tc35892_gpio_remove),
-};
-
-static int __init tc35892_gpio_init(void)
-{
- return platform_driver_register(&tc35892_gpio_driver);
-}
-subsys_initcall(tc35892_gpio_init);
-
-static void __exit tc35892_gpio_exit(void)
-{
- platform_driver_unregister(&tc35892_gpio_driver);
-}
-module_exit(tc35892_gpio_exit);
-
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("TC35892 GPIO driver");
-MODULE_AUTHOR("Hanumath Prasad, Rabin Vincent");
--- /dev/null
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * License Terms: GNU General Public License, version 2
+ * Author: Hanumath Prasad <hanumath.prasad@stericsson.com> for ST-Ericsson
+ * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/gpio.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/mfd/tc3589x.h>
+
+/*
+ * These registers are modified under the irq bus lock and cached to avoid
+ * unnecessary writes in bus_sync_unlock.
+ */
+enum { REG_IBE, REG_IEV, REG_IS, REG_IE };
+
+#define CACHE_NR_REGS 4
+#define CACHE_NR_BANKS 3
+
+struct tc35892_gpio {
+ struct gpio_chip chip;
+ struct tc35892 *tc35892;
+ struct device *dev;
+ struct mutex irq_lock;
+
+ int irq_base;
+
+ /* Caches of interrupt control registers for bus_lock */
+ u8 regs[CACHE_NR_REGS][CACHE_NR_BANKS];
+ u8 oldregs[CACHE_NR_REGS][CACHE_NR_BANKS];
+};
+
+static inline struct tc35892_gpio *to_tc35892_gpio(struct gpio_chip *chip)
+{
+ return container_of(chip, struct tc35892_gpio, chip);
+}
+
+static int tc35892_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+ struct tc35892_gpio *tc35892_gpio = to_tc35892_gpio(chip);
+ struct tc35892 *tc35892 = tc35892_gpio->tc35892;
+ u8 reg = TC35892_GPIODATA0 + (offset / 8) * 2;
+ u8 mask = 1 << (offset % 8);
+ int ret;
+
+ ret = tc35892_reg_read(tc35892, reg);
+ if (ret < 0)
+ return ret;
+
+ return ret & mask;
+}
+
+static void tc35892_gpio_set(struct gpio_chip *chip, unsigned offset, int val)
+{
+ struct tc35892_gpio *tc35892_gpio = to_tc35892_gpio(chip);
+ struct tc35892 *tc35892 = tc35892_gpio->tc35892;
+ u8 reg = TC35892_GPIODATA0 + (offset / 8) * 2;
+ unsigned pos = offset % 8;
+ u8 data[] = {!!val << pos, 1 << pos};
+
+ tc35892_block_write(tc35892, reg, ARRAY_SIZE(data), data);
+}
+
+static int tc35892_gpio_direction_output(struct gpio_chip *chip,
+ unsigned offset, int val)
+{
+ struct tc35892_gpio *tc35892_gpio = to_tc35892_gpio(chip);
+ struct tc35892 *tc35892 = tc35892_gpio->tc35892;
+ u8 reg = TC35892_GPIODIR0 + offset / 8;
+ unsigned pos = offset % 8;
+
+ tc35892_gpio_set(chip, offset, val);
+
+ return tc35892_set_bits(tc35892, reg, 1 << pos, 1 << pos);
+}
+
+static int tc35892_gpio_direction_input(struct gpio_chip *chip,
+ unsigned offset)
+{
+ struct tc35892_gpio *tc35892_gpio = to_tc35892_gpio(chip);
+ struct tc35892 *tc35892 = tc35892_gpio->tc35892;
+ u8 reg = TC35892_GPIODIR0 + offset / 8;
+ unsigned pos = offset % 8;
+
+ return tc35892_set_bits(tc35892, reg, 1 << pos, 0);
+}
+
+static int tc35892_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
+{
+ struct tc35892_gpio *tc35892_gpio = to_tc35892_gpio(chip);
+
+ return tc35892_gpio->irq_base + offset;
+}
+
+static struct gpio_chip template_chip = {
+ .label = "tc35892",
+ .owner = THIS_MODULE,
+ .direction_input = tc35892_gpio_direction_input,
+ .get = tc35892_gpio_get,
+ .direction_output = tc35892_gpio_direction_output,
+ .set = tc35892_gpio_set,
+ .to_irq = tc35892_gpio_to_irq,
+ .can_sleep = 1,
+};
+
+static int tc35892_gpio_irq_set_type(unsigned int irq, unsigned int type)
+{
+ struct tc35892_gpio *tc35892_gpio = get_irq_chip_data(irq);
+ int offset = irq - tc35892_gpio->irq_base;
+ int regoffset = offset / 8;
+ int mask = 1 << (offset % 8);
+
+ if (type == IRQ_TYPE_EDGE_BOTH) {
+ tc35892_gpio->regs[REG_IBE][regoffset] |= mask;
+ return 0;
+ }
+
+ tc35892_gpio->regs[REG_IBE][regoffset] &= ~mask;
+
+ if (type == IRQ_TYPE_LEVEL_LOW || type == IRQ_TYPE_LEVEL_HIGH)
+ tc35892_gpio->regs[REG_IS][regoffset] |= mask;
+ else
+ tc35892_gpio->regs[REG_IS][regoffset] &= ~mask;
+
+ if (type == IRQ_TYPE_EDGE_RISING || type == IRQ_TYPE_LEVEL_HIGH)
+ tc35892_gpio->regs[REG_IEV][regoffset] |= mask;
+ else
+ tc35892_gpio->regs[REG_IEV][regoffset] &= ~mask;
+
+ return 0;
+}
+
+static void tc35892_gpio_irq_lock(unsigned int irq)
+{
+ struct tc35892_gpio *tc35892_gpio = get_irq_chip_data(irq);
+
+ mutex_lock(&tc35892_gpio->irq_lock);
+}
+
+static void tc35892_gpio_irq_sync_unlock(unsigned int irq)
+{
+ struct tc35892_gpio *tc35892_gpio = get_irq_chip_data(irq);
+ struct tc35892 *tc35892 = tc35892_gpio->tc35892;
+ static const u8 regmap[] = {
+ [REG_IBE] = TC35892_GPIOIBE0,
+ [REG_IEV] = TC35892_GPIOIEV0,
+ [REG_IS] = TC35892_GPIOIS0,
+ [REG_IE] = TC35892_GPIOIE0,
+ };
+ int i, j;
+
+ for (i = 0; i < CACHE_NR_REGS; i++) {
+ for (j = 0; j < CACHE_NR_BANKS; j++) {
+ u8 old = tc35892_gpio->oldregs[i][j];
+ u8 new = tc35892_gpio->regs[i][j];
+
+ if (new == old)
+ continue;
+
+ tc35892_gpio->oldregs[i][j] = new;
+ tc35892_reg_write(tc35892, regmap[i] + j * 8, new);
+ }
+ }
+
+ mutex_unlock(&tc35892_gpio->irq_lock);
+}
+
+static void tc35892_gpio_irq_mask(unsigned int irq)
+{
+ struct tc35892_gpio *tc35892_gpio = get_irq_chip_data(irq);
+ int offset = irq - tc35892_gpio->irq_base;
+ int regoffset = offset / 8;
+ int mask = 1 << (offset % 8);
+
+ tc35892_gpio->regs[REG_IE][regoffset] &= ~mask;
+}
+
+static void tc35892_gpio_irq_unmask(unsigned int irq)
+{
+ struct tc35892_gpio *tc35892_gpio = get_irq_chip_data(irq);
+ int offset = irq - tc35892_gpio->irq_base;
+ int regoffset = offset / 8;
+ int mask = 1 << (offset % 8);
+
+ tc35892_gpio->regs[REG_IE][regoffset] |= mask;
+}
+
+static struct irq_chip tc35892_gpio_irq_chip = {
+ .name = "tc35892-gpio",
+ .bus_lock = tc35892_gpio_irq_lock,
+ .bus_sync_unlock = tc35892_gpio_irq_sync_unlock,
+ .mask = tc35892_gpio_irq_mask,
+ .unmask = tc35892_gpio_irq_unmask,
+ .set_type = tc35892_gpio_irq_set_type,
+};
+
+static irqreturn_t tc35892_gpio_irq(int irq, void *dev)
+{
+ struct tc35892_gpio *tc35892_gpio = dev;
+ struct tc35892 *tc35892 = tc35892_gpio->tc35892;
+ u8 status[CACHE_NR_BANKS];
+ int ret;
+ int i;
+
+ ret = tc35892_block_read(tc35892, TC35892_GPIOMIS0,
+ ARRAY_SIZE(status), status);
+ if (ret < 0)
+ return IRQ_NONE;
+
+ for (i = 0; i < ARRAY_SIZE(status); i++) {
+ unsigned int stat = status[i];
+ if (!stat)
+ continue;
+
+ while (stat) {
+ int bit = __ffs(stat);
+ int line = i * 8 + bit;
+
+ handle_nested_irq(tc35892_gpio->irq_base + line);
+ stat &= ~(1 << bit);
+ }
+
+ tc35892_reg_write(tc35892, TC35892_GPIOIC0 + i, status[i]);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int tc35892_gpio_irq_init(struct tc35892_gpio *tc35892_gpio)
+{
+ int base = tc35892_gpio->irq_base;
+ int irq;
+
+ for (irq = base; irq < base + tc35892_gpio->chip.ngpio; irq++) {
+ set_irq_chip_data(irq, tc35892_gpio);
+ set_irq_chip_and_handler(irq, &tc35892_gpio_irq_chip,
+ handle_simple_irq);
+ set_irq_nested_thread(irq, 1);
+#ifdef CONFIG_ARM
+ set_irq_flags(irq, IRQF_VALID);
+#else
+ set_irq_noprobe(irq);
+#endif
+ }
+
+ return 0;
+}
+
+static void tc35892_gpio_irq_remove(struct tc35892_gpio *tc35892_gpio)
+{
+ int base = tc35892_gpio->irq_base;
+ int irq;
+
+ for (irq = base; irq < base + tc35892_gpio->chip.ngpio; irq++) {
+#ifdef CONFIG_ARM
+ set_irq_flags(irq, 0);
+#endif
+ set_irq_chip_and_handler(irq, NULL, NULL);
+ set_irq_chip_data(irq, NULL);
+ }
+}
+
+static int __devinit tc35892_gpio_probe(struct platform_device *pdev)
+{
+ struct tc35892 *tc35892 = dev_get_drvdata(pdev->dev.parent);
+ struct tc35892_gpio_platform_data *pdata;
+ struct tc35892_gpio *tc35892_gpio;
+ int ret;
+ int irq;
+
+ pdata = tc35892->pdata->gpio;
+ if (!pdata)
+ return -ENODEV;
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ return irq;
+
+ tc35892_gpio = kzalloc(sizeof(struct tc35892_gpio), GFP_KERNEL);
+ if (!tc35892_gpio)
+ return -ENOMEM;
+
+ mutex_init(&tc35892_gpio->irq_lock);
+
+ tc35892_gpio->dev = &pdev->dev;
+ tc35892_gpio->tc35892 = tc35892;
+
+ tc35892_gpio->chip = template_chip;
+ tc35892_gpio->chip.ngpio = tc35892->num_gpio;
+ tc35892_gpio->chip.dev = &pdev->dev;
+ tc35892_gpio->chip.base = pdata->gpio_base;
+
+ tc35892_gpio->irq_base = tc35892->irq_base + TC35892_INT_GPIO(0);
+
+ /* Bring the GPIO module out of reset */
+ ret = tc35892_set_bits(tc35892, TC35892_RSTCTRL,
+ TC35892_RSTCTRL_GPIRST, 0);
+ if (ret < 0)
+ goto out_free;
+
+ ret = tc35892_gpio_irq_init(tc35892_gpio);
+ if (ret)
+ goto out_free;
+
+ ret = request_threaded_irq(irq, NULL, tc35892_gpio_irq, IRQF_ONESHOT,
+ "tc35892-gpio", tc35892_gpio);
+ if (ret) {
+ dev_err(&pdev->dev, "unable to get irq: %d\n", ret);
+ goto out_removeirq;
+ }
+
+ ret = gpiochip_add(&tc35892_gpio->chip);
+ if (ret) {
+ dev_err(&pdev->dev, "unable to add gpiochip: %d\n", ret);
+ goto out_freeirq;
+ }
+
+ if (pdata->setup)
+ pdata->setup(tc35892, tc35892_gpio->chip.base);
+
+ platform_set_drvdata(pdev, tc35892_gpio);
+
+ return 0;
+
+out_freeirq:
+ free_irq(irq, tc35892_gpio);
+out_removeirq:
+ tc35892_gpio_irq_remove(tc35892_gpio);
+out_free:
+ kfree(tc35892_gpio);
+ return ret;
+}
+
+static int __devexit tc35892_gpio_remove(struct platform_device *pdev)
+{
+ struct tc35892_gpio *tc35892_gpio = platform_get_drvdata(pdev);
+ struct tc35892 *tc35892 = tc35892_gpio->tc35892;
+ struct tc35892_gpio_platform_data *pdata = tc35892->pdata->gpio;
+ int irq = platform_get_irq(pdev, 0);
+ int ret;
+
+ if (pdata->remove)
+ pdata->remove(tc35892, tc35892_gpio->chip.base);
+
+ ret = gpiochip_remove(&tc35892_gpio->chip);
+ if (ret < 0) {
+ dev_err(tc35892_gpio->dev,
+ "unable to remove gpiochip: %d\n", ret);
+ return ret;
+ }
+
+ free_irq(irq, tc35892_gpio);
+ tc35892_gpio_irq_remove(tc35892_gpio);
+
+ platform_set_drvdata(pdev, NULL);
+ kfree(tc35892_gpio);
+
+ return 0;
+}
+
+static struct platform_driver tc35892_gpio_driver = {
+ .driver.name = "tc35892-gpio",
+ .driver.owner = THIS_MODULE,
+ .probe = tc35892_gpio_probe,
+ .remove = __devexit_p(tc35892_gpio_remove),
+};
+
+static int __init tc35892_gpio_init(void)
+{
+ return platform_driver_register(&tc35892_gpio_driver);
+}
+subsys_initcall(tc35892_gpio_init);
+
+static void __exit tc35892_gpio_exit(void)
+{
+ platform_driver_unregister(&tc35892_gpio_driver);
+}
+module_exit(tc35892_gpio_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("TC35892 GPIO driver");
+MODULE_AUTHOR("Hanumath Prasad, Rabin Vincent");
Keypad: stmpe-keypad
Touchscreen: stmpe-ts
-config MFD_TC35892
- bool "Support Toshiba TC35892"
+config MFD_TC3589X
+ bool "Support Toshiba TC35892 and variants"
depends on I2C=y && GENERIC_HARDIRQS
select MFD_CORE
help
- Support for the Toshiba TC35892 I/O Expander.
+ Support for the Toshiba TC35892 and variants I/O Expander.
This driver provides common support for accessing the device,
additional drivers must be enabled in order to use the
obj-$(CONFIG_MFD_DM355EVM_MSP) += dm355evm_msp.o
obj-$(CONFIG_MFD_STMPE) += stmpe.o
-obj-$(CONFIG_MFD_TC35892) += tc35892.o
+obj-$(CONFIG_MFD_TC3589X) += tc3589x.o
obj-$(CONFIG_MFD_T7L66XB) += t7l66xb.o tmio_core.o
obj-$(CONFIG_MFD_TC6387XB) += tc6387xb.o tmio_core.o
obj-$(CONFIG_MFD_TC6393XB) += tc6393xb.o tmio_core.o
+++ /dev/null
-/*
- * Copyright (C) ST-Ericsson SA 2010
- *
- * License Terms: GNU General Public License, version 2
- * Author: Hanumath Prasad <hanumath.prasad@stericsson.com> for ST-Ericsson
- * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
- */
-
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/slab.h>
-#include <linux/i2c.h>
-#include <linux/mfd/core.h>
-#include <linux/mfd/tc3589x.h>
-
-/**
- * tc35892_reg_read() - read a single TC35892 register
- * @tc35892: Device to read from
- * @reg: Register to read
- */
-int tc35892_reg_read(struct tc35892 *tc35892, u8 reg)
-{
- int ret;
-
- ret = i2c_smbus_read_byte_data(tc35892->i2c, reg);
- if (ret < 0)
- dev_err(tc35892->dev, "failed to read reg %#x: %d\n",
- reg, ret);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(tc35892_reg_read);
-
-/**
- * tc35892_reg_read() - write a single TC35892 register
- * @tc35892: Device to write to
- * @reg: Register to read
- * @data: Value to write
- */
-int tc35892_reg_write(struct tc35892 *tc35892, u8 reg, u8 data)
-{
- int ret;
-
- ret = i2c_smbus_write_byte_data(tc35892->i2c, reg, data);
- if (ret < 0)
- dev_err(tc35892->dev, "failed to write reg %#x: %d\n",
- reg, ret);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(tc35892_reg_write);
-
-/**
- * tc35892_block_read() - read multiple TC35892 registers
- * @tc35892: Device to read from
- * @reg: First register
- * @length: Number of registers
- * @values: Buffer to write to
- */
-int tc35892_block_read(struct tc35892 *tc35892, u8 reg, u8 length, u8 *values)
-{
- int ret;
-
- ret = i2c_smbus_read_i2c_block_data(tc35892->i2c, reg, length, values);
- if (ret < 0)
- dev_err(tc35892->dev, "failed to read regs %#x: %d\n",
- reg, ret);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(tc35892_block_read);
-
-/**
- * tc35892_block_write() - write multiple TC35892 registers
- * @tc35892: Device to write to
- * @reg: First register
- * @length: Number of registers
- * @values: Values to write
- */
-int tc35892_block_write(struct tc35892 *tc35892, u8 reg, u8 length,
- const u8 *values)
-{
- int ret;
-
- ret = i2c_smbus_write_i2c_block_data(tc35892->i2c, reg, length,
- values);
- if (ret < 0)
- dev_err(tc35892->dev, "failed to write regs %#x: %d\n",
- reg, ret);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(tc35892_block_write);
-
-/**
- * tc35892_set_bits() - set the value of a bitfield in a TC35892 register
- * @tc35892: Device to write to
- * @reg: Register to write
- * @mask: Mask of bits to set
- * @values: Value to set
- */
-int tc35892_set_bits(struct tc35892 *tc35892, u8 reg, u8 mask, u8 val)
-{
- int ret;
-
- mutex_lock(&tc35892->lock);
-
- ret = tc35892_reg_read(tc35892, reg);
- if (ret < 0)
- goto out;
-
- ret &= ~mask;
- ret |= val;
-
- ret = tc35892_reg_write(tc35892, reg, ret);
-
-out:
- mutex_unlock(&tc35892->lock);
- return ret;
-}
-EXPORT_SYMBOL_GPL(tc35892_set_bits);
-
-static struct resource gpio_resources[] = {
- {
- .start = TC35892_INT_GPIIRQ,
- .end = TC35892_INT_GPIIRQ,
- .flags = IORESOURCE_IRQ,
- },
-};
-
-static struct mfd_cell tc35892_devs[] = {
- {
- .name = "tc35892-gpio",
- .num_resources = ARRAY_SIZE(gpio_resources),
- .resources = &gpio_resources[0],
- },
-};
-
-static irqreturn_t tc35892_irq(int irq, void *data)
-{
- struct tc35892 *tc35892 = data;
- int status;
-
- status = tc35892_reg_read(tc35892, TC35892_IRQST);
- if (status < 0)
- return IRQ_NONE;
-
- while (status) {
- int bit = __ffs(status);
-
- handle_nested_irq(tc35892->irq_base + bit);
- status &= ~(1 << bit);
- }
-
- /*
- * A dummy read or write (to any register) appears to be necessary to
- * have the last interrupt clear (for example, GPIO IC write) take
- * effect.
- */
- tc35892_reg_read(tc35892, TC35892_IRQST);
-
- return IRQ_HANDLED;
-}
-
-static void tc35892_irq_dummy(unsigned int irq)
-{
- /* No mask/unmask at this level */
-}
-
-static struct irq_chip tc35892_irq_chip = {
- .name = "tc35892",
- .mask = tc35892_irq_dummy,
- .unmask = tc35892_irq_dummy,
-};
-
-static int tc35892_irq_init(struct tc35892 *tc35892)
-{
- int base = tc35892->irq_base;
- int irq;
-
- for (irq = base; irq < base + TC35892_NR_INTERNAL_IRQS; irq++) {
- set_irq_chip_data(irq, tc35892);
- set_irq_chip_and_handler(irq, &tc35892_irq_chip,
- handle_edge_irq);
- set_irq_nested_thread(irq, 1);
-#ifdef CONFIG_ARM
- set_irq_flags(irq, IRQF_VALID);
-#else
- set_irq_noprobe(irq);
-#endif
- }
-
- return 0;
-}
-
-static void tc35892_irq_remove(struct tc35892 *tc35892)
-{
- int base = tc35892->irq_base;
- int irq;
-
- for (irq = base; irq < base + TC35892_NR_INTERNAL_IRQS; irq++) {
-#ifdef CONFIG_ARM
- set_irq_flags(irq, 0);
-#endif
- set_irq_chip_and_handler(irq, NULL, NULL);
- set_irq_chip_data(irq, NULL);
- }
-}
-
-static int tc35892_chip_init(struct tc35892 *tc35892)
-{
- int manf, ver, ret;
-
- manf = tc35892_reg_read(tc35892, TC35892_MANFCODE);
- if (manf < 0)
- return manf;
-
- ver = tc35892_reg_read(tc35892, TC35892_VERSION);
- if (ver < 0)
- return ver;
-
- if (manf != TC35892_MANFCODE_MAGIC) {
- dev_err(tc35892->dev, "unknown manufacturer: %#x\n", manf);
- return -EINVAL;
- }
-
- dev_info(tc35892->dev, "manufacturer: %#x, version: %#x\n", manf, ver);
-
- /* Put everything except the IRQ module into reset */
- ret = tc35892_reg_write(tc35892, TC35892_RSTCTRL,
- TC35892_RSTCTRL_TIMRST
- | TC35892_RSTCTRL_ROTRST
- | TC35892_RSTCTRL_KBDRST
- | TC35892_RSTCTRL_GPIRST);
- if (ret < 0)
- return ret;
-
- /* Clear the reset interrupt. */
- return tc35892_reg_write(tc35892, TC35892_RSTINTCLR, 0x1);
-}
-
-static int __devinit tc35892_probe(struct i2c_client *i2c,
- const struct i2c_device_id *id)
-{
- struct tc35892_platform_data *pdata = i2c->dev.platform_data;
- struct tc35892 *tc35892;
- int ret;
-
- if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA
- | I2C_FUNC_SMBUS_I2C_BLOCK))
- return -EIO;
-
- tc35892 = kzalloc(sizeof(struct tc35892), GFP_KERNEL);
- if (!tc35892)
- return -ENOMEM;
-
- mutex_init(&tc35892->lock);
-
- tc35892->dev = &i2c->dev;
- tc35892->i2c = i2c;
- tc35892->pdata = pdata;
- tc35892->irq_base = pdata->irq_base;
- tc35892->num_gpio = id->driver_data;
-
- i2c_set_clientdata(i2c, tc35892);
-
- ret = tc35892_chip_init(tc35892);
- if (ret)
- goto out_free;
-
- ret = tc35892_irq_init(tc35892);
- if (ret)
- goto out_free;
-
- ret = request_threaded_irq(tc35892->i2c->irq, NULL, tc35892_irq,
- IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
- "tc35892", tc35892);
- if (ret) {
- dev_err(tc35892->dev, "failed to request IRQ: %d\n", ret);
- goto out_removeirq;
- }
-
- ret = mfd_add_devices(tc35892->dev, -1, tc35892_devs,
- ARRAY_SIZE(tc35892_devs), NULL,
- tc35892->irq_base);
- if (ret) {
- dev_err(tc35892->dev, "failed to add children\n");
- goto out_freeirq;
- }
-
- return 0;
-
-out_freeirq:
- free_irq(tc35892->i2c->irq, tc35892);
-out_removeirq:
- tc35892_irq_remove(tc35892);
-out_free:
- kfree(tc35892);
- return ret;
-}
-
-static int __devexit tc35892_remove(struct i2c_client *client)
-{
- struct tc35892 *tc35892 = i2c_get_clientdata(client);
-
- mfd_remove_devices(tc35892->dev);
-
- free_irq(tc35892->i2c->irq, tc35892);
- tc35892_irq_remove(tc35892);
-
- kfree(tc35892);
-
- return 0;
-}
-
-static const struct i2c_device_id tc35892_id[] = {
- { "tc35892", 24 },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, tc35892_id);
-
-static struct i2c_driver tc35892_driver = {
- .driver.name = "tc35892",
- .driver.owner = THIS_MODULE,
- .probe = tc35892_probe,
- .remove = __devexit_p(tc35892_remove),
- .id_table = tc35892_id,
-};
-
-static int __init tc35892_init(void)
-{
- return i2c_add_driver(&tc35892_driver);
-}
-subsys_initcall(tc35892_init);
-
-static void __exit tc35892_exit(void)
-{
- i2c_del_driver(&tc35892_driver);
-}
-module_exit(tc35892_exit);
-
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("TC35892 MFD core driver");
-MODULE_AUTHOR("Hanumath Prasad, Rabin Vincent");
--- /dev/null
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * License Terms: GNU General Public License, version 2
+ * Author: Hanumath Prasad <hanumath.prasad@stericsson.com> for ST-Ericsson
+ * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
+ */
+
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/tc3589x.h>
+
+/**
+ * tc35892_reg_read() - read a single TC35892 register
+ * @tc35892: Device to read from
+ * @reg: Register to read
+ */
+int tc35892_reg_read(struct tc35892 *tc35892, u8 reg)
+{
+ int ret;
+
+ ret = i2c_smbus_read_byte_data(tc35892->i2c, reg);
+ if (ret < 0)
+ dev_err(tc35892->dev, "failed to read reg %#x: %d\n",
+ reg, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(tc35892_reg_read);
+
+/**
+ * tc35892_reg_read() - write a single TC35892 register
+ * @tc35892: Device to write to
+ * @reg: Register to read
+ * @data: Value to write
+ */
+int tc35892_reg_write(struct tc35892 *tc35892, u8 reg, u8 data)
+{
+ int ret;
+
+ ret = i2c_smbus_write_byte_data(tc35892->i2c, reg, data);
+ if (ret < 0)
+ dev_err(tc35892->dev, "failed to write reg %#x: %d\n",
+ reg, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(tc35892_reg_write);
+
+/**
+ * tc35892_block_read() - read multiple TC35892 registers
+ * @tc35892: Device to read from
+ * @reg: First register
+ * @length: Number of registers
+ * @values: Buffer to write to
+ */
+int tc35892_block_read(struct tc35892 *tc35892, u8 reg, u8 length, u8 *values)
+{
+ int ret;
+
+ ret = i2c_smbus_read_i2c_block_data(tc35892->i2c, reg, length, values);
+ if (ret < 0)
+ dev_err(tc35892->dev, "failed to read regs %#x: %d\n",
+ reg, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(tc35892_block_read);
+
+/**
+ * tc35892_block_write() - write multiple TC35892 registers
+ * @tc35892: Device to write to
+ * @reg: First register
+ * @length: Number of registers
+ * @values: Values to write
+ */
+int tc35892_block_write(struct tc35892 *tc35892, u8 reg, u8 length,
+ const u8 *values)
+{
+ int ret;
+
+ ret = i2c_smbus_write_i2c_block_data(tc35892->i2c, reg, length,
+ values);
+ if (ret < 0)
+ dev_err(tc35892->dev, "failed to write regs %#x: %d\n",
+ reg, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(tc35892_block_write);
+
+/**
+ * tc35892_set_bits() - set the value of a bitfield in a TC35892 register
+ * @tc35892: Device to write to
+ * @reg: Register to write
+ * @mask: Mask of bits to set
+ * @values: Value to set
+ */
+int tc35892_set_bits(struct tc35892 *tc35892, u8 reg, u8 mask, u8 val)
+{
+ int ret;
+
+ mutex_lock(&tc35892->lock);
+
+ ret = tc35892_reg_read(tc35892, reg);
+ if (ret < 0)
+ goto out;
+
+ ret &= ~mask;
+ ret |= val;
+
+ ret = tc35892_reg_write(tc35892, reg, ret);
+
+out:
+ mutex_unlock(&tc35892->lock);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(tc35892_set_bits);
+
+static struct resource gpio_resources[] = {
+ {
+ .start = TC35892_INT_GPIIRQ,
+ .end = TC35892_INT_GPIIRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct mfd_cell tc35892_devs[] = {
+ {
+ .name = "tc35892-gpio",
+ .num_resources = ARRAY_SIZE(gpio_resources),
+ .resources = &gpio_resources[0],
+ },
+};
+
+static irqreturn_t tc35892_irq(int irq, void *data)
+{
+ struct tc35892 *tc35892 = data;
+ int status;
+
+ status = tc35892_reg_read(tc35892, TC35892_IRQST);
+ if (status < 0)
+ return IRQ_NONE;
+
+ while (status) {
+ int bit = __ffs(status);
+
+ handle_nested_irq(tc35892->irq_base + bit);
+ status &= ~(1 << bit);
+ }
+
+ /*
+ * A dummy read or write (to any register) appears to be necessary to
+ * have the last interrupt clear (for example, GPIO IC write) take
+ * effect.
+ */
+ tc35892_reg_read(tc35892, TC35892_IRQST);
+
+ return IRQ_HANDLED;
+}
+
+static void tc35892_irq_dummy(unsigned int irq)
+{
+ /* No mask/unmask at this level */
+}
+
+static struct irq_chip tc35892_irq_chip = {
+ .name = "tc35892",
+ .mask = tc35892_irq_dummy,
+ .unmask = tc35892_irq_dummy,
+};
+
+static int tc35892_irq_init(struct tc35892 *tc35892)
+{
+ int base = tc35892->irq_base;
+ int irq;
+
+ for (irq = base; irq < base + TC35892_NR_INTERNAL_IRQS; irq++) {
+ set_irq_chip_data(irq, tc35892);
+ set_irq_chip_and_handler(irq, &tc35892_irq_chip,
+ handle_edge_irq);
+ set_irq_nested_thread(irq, 1);
+#ifdef CONFIG_ARM
+ set_irq_flags(irq, IRQF_VALID);
+#else
+ set_irq_noprobe(irq);
+#endif
+ }
+
+ return 0;
+}
+
+static void tc35892_irq_remove(struct tc35892 *tc35892)
+{
+ int base = tc35892->irq_base;
+ int irq;
+
+ for (irq = base; irq < base + TC35892_NR_INTERNAL_IRQS; irq++) {
+#ifdef CONFIG_ARM
+ set_irq_flags(irq, 0);
+#endif
+ set_irq_chip_and_handler(irq, NULL, NULL);
+ set_irq_chip_data(irq, NULL);
+ }
+}
+
+static int tc35892_chip_init(struct tc35892 *tc35892)
+{
+ int manf, ver, ret;
+
+ manf = tc35892_reg_read(tc35892, TC35892_MANFCODE);
+ if (manf < 0)
+ return manf;
+
+ ver = tc35892_reg_read(tc35892, TC35892_VERSION);
+ if (ver < 0)
+ return ver;
+
+ if (manf != TC35892_MANFCODE_MAGIC) {
+ dev_err(tc35892->dev, "unknown manufacturer: %#x\n", manf);
+ return -EINVAL;
+ }
+
+ dev_info(tc35892->dev, "manufacturer: %#x, version: %#x\n", manf, ver);
+
+ /* Put everything except the IRQ module into reset */
+ ret = tc35892_reg_write(tc35892, TC35892_RSTCTRL,
+ TC35892_RSTCTRL_TIMRST
+ | TC35892_RSTCTRL_ROTRST
+ | TC35892_RSTCTRL_KBDRST
+ | TC35892_RSTCTRL_GPIRST);
+ if (ret < 0)
+ return ret;
+
+ /* Clear the reset interrupt. */
+ return tc35892_reg_write(tc35892, TC35892_RSTINTCLR, 0x1);
+}
+
+static int __devinit tc35892_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct tc35892_platform_data *pdata = i2c->dev.platform_data;
+ struct tc35892 *tc35892;
+ int ret;
+
+ if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA
+ | I2C_FUNC_SMBUS_I2C_BLOCK))
+ return -EIO;
+
+ tc35892 = kzalloc(sizeof(struct tc35892), GFP_KERNEL);
+ if (!tc35892)
+ return -ENOMEM;
+
+ mutex_init(&tc35892->lock);
+
+ tc35892->dev = &i2c->dev;
+ tc35892->i2c = i2c;
+ tc35892->pdata = pdata;
+ tc35892->irq_base = pdata->irq_base;
+ tc35892->num_gpio = id->driver_data;
+
+ i2c_set_clientdata(i2c, tc35892);
+
+ ret = tc35892_chip_init(tc35892);
+ if (ret)
+ goto out_free;
+
+ ret = tc35892_irq_init(tc35892);
+ if (ret)
+ goto out_free;
+
+ ret = request_threaded_irq(tc35892->i2c->irq, NULL, tc35892_irq,
+ IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+ "tc35892", tc35892);
+ if (ret) {
+ dev_err(tc35892->dev, "failed to request IRQ: %d\n", ret);
+ goto out_removeirq;
+ }
+
+ ret = mfd_add_devices(tc35892->dev, -1, tc35892_devs,
+ ARRAY_SIZE(tc35892_devs), NULL,
+ tc35892->irq_base);
+ if (ret) {
+ dev_err(tc35892->dev, "failed to add children\n");
+ goto out_freeirq;
+ }
+
+ return 0;
+
+out_freeirq:
+ free_irq(tc35892->i2c->irq, tc35892);
+out_removeirq:
+ tc35892_irq_remove(tc35892);
+out_free:
+ kfree(tc35892);
+ return ret;
+}
+
+static int __devexit tc35892_remove(struct i2c_client *client)
+{
+ struct tc35892 *tc35892 = i2c_get_clientdata(client);
+
+ mfd_remove_devices(tc35892->dev);
+
+ free_irq(tc35892->i2c->irq, tc35892);
+ tc35892_irq_remove(tc35892);
+
+ kfree(tc35892);
+
+ return 0;
+}
+
+static const struct i2c_device_id tc35892_id[] = {
+ { "tc35892", 24 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, tc35892_id);
+
+static struct i2c_driver tc35892_driver = {
+ .driver.name = "tc35892",
+ .driver.owner = THIS_MODULE,
+ .probe = tc35892_probe,
+ .remove = __devexit_p(tc35892_remove),
+ .id_table = tc35892_id,
+};
+
+static int __init tc35892_init(void)
+{
+ return i2c_add_driver(&tc35892_driver);
+}
+subsys_initcall(tc35892_init);
+
+static void __exit tc35892_exit(void)
+{
+ i2c_del_driver(&tc35892_driver);
+}
+module_exit(tc35892_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("TC35892 MFD core driver");
+MODULE_AUTHOR("Hanumath Prasad, Rabin Vincent");
projects / ~shefty / rdma-dev.git / commitdiff