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path: root/ANDROID_3.4.5/drivers/mfd/tc3589x.c
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Diffstat (limited to 'ANDROID_3.4.5/drivers/mfd/tc3589x.c')
-rw-r--r--ANDROID_3.4.5/drivers/mfd/tc3589x.c424
1 files changed, 0 insertions, 424 deletions
diff --git a/ANDROID_3.4.5/drivers/mfd/tc3589x.c b/ANDROID_3.4.5/drivers/mfd/tc3589x.c
deleted file mode 100644
index de979742..00000000
--- a/ANDROID_3.4.5/drivers/mfd/tc3589x.c
+++ /dev/null
@@ -1,424 +0,0 @@
-/*
- * 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>
-
-#define TC3589x_CLKMODE_MODCTL_SLEEP 0x0
-#define TC3589x_CLKMODE_MODCTL_OPERATION (1 << 0)
-
-/**
- * tc3589x_reg_read() - read a single TC3589x register
- * @tc3589x: Device to read from
- * @reg: Register to read
- */
-int tc3589x_reg_read(struct tc3589x *tc3589x, u8 reg)
-{
- int ret;
-
- ret = i2c_smbus_read_byte_data(tc3589x->i2c, reg);
- if (ret < 0)
- dev_err(tc3589x->dev, "failed to read reg %#x: %d\n",
- reg, ret);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(tc3589x_reg_read);
-
-/**
- * tc3589x_reg_read() - write a single TC3589x register
- * @tc3589x: Device to write to
- * @reg: Register to read
- * @data: Value to write
- */
-int tc3589x_reg_write(struct tc3589x *tc3589x, u8 reg, u8 data)
-{
- int ret;
-
- ret = i2c_smbus_write_byte_data(tc3589x->i2c, reg, data);
- if (ret < 0)
- dev_err(tc3589x->dev, "failed to write reg %#x: %d\n",
- reg, ret);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(tc3589x_reg_write);
-
-/**
- * tc3589x_block_read() - read multiple TC3589x registers
- * @tc3589x: Device to read from
- * @reg: First register
- * @length: Number of registers
- * @values: Buffer to write to
- */
-int tc3589x_block_read(struct tc3589x *tc3589x, u8 reg, u8 length, u8 *values)
-{
- int ret;
-
- ret = i2c_smbus_read_i2c_block_data(tc3589x->i2c, reg, length, values);
- if (ret < 0)
- dev_err(tc3589x->dev, "failed to read regs %#x: %d\n",
- reg, ret);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(tc3589x_block_read);
-
-/**
- * tc3589x_block_write() - write multiple TC3589x registers
- * @tc3589x: Device to write to
- * @reg: First register
- * @length: Number of registers
- * @values: Values to write
- */
-int tc3589x_block_write(struct tc3589x *tc3589x, u8 reg, u8 length,
- const u8 *values)
-{
- int ret;
-
- ret = i2c_smbus_write_i2c_block_data(tc3589x->i2c, reg, length,
- values);
- if (ret < 0)
- dev_err(tc3589x->dev, "failed to write regs %#x: %d\n",
- reg, ret);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(tc3589x_block_write);
-
-/**
- * tc3589x_set_bits() - set the value of a bitfield in a TC3589x register
- * @tc3589x: Device to write to
- * @reg: Register to write
- * @mask: Mask of bits to set
- * @values: Value to set
- */
-int tc3589x_set_bits(struct tc3589x *tc3589x, u8 reg, u8 mask, u8 val)
-{
- int ret;
-
- mutex_lock(&tc3589x->lock);
-
- ret = tc3589x_reg_read(tc3589x, reg);
- if (ret < 0)
- goto out;
-
- ret &= ~mask;
- ret |= val;
-
- ret = tc3589x_reg_write(tc3589x, reg, ret);
-
-out:
- mutex_unlock(&tc3589x->lock);
- return ret;
-}
-EXPORT_SYMBOL_GPL(tc3589x_set_bits);
-
-static struct resource gpio_resources[] = {
- {
- .start = TC3589x_INT_GPIIRQ,
- .end = TC3589x_INT_GPIIRQ,
- .flags = IORESOURCE_IRQ,
- },
-};
-
-static struct resource keypad_resources[] = {
- {
- .start = TC3589x_INT_KBDIRQ,
- .end = TC3589x_INT_KBDIRQ,
- .flags = IORESOURCE_IRQ,
- },
-};
-
-static struct mfd_cell tc3589x_dev_gpio[] = {
- {
- .name = "tc3589x-gpio",
- .num_resources = ARRAY_SIZE(gpio_resources),
- .resources = &gpio_resources[0],
- },
-};
-
-static struct mfd_cell tc3589x_dev_keypad[] = {
- {
- .name = "tc3589x-keypad",
- .num_resources = ARRAY_SIZE(keypad_resources),
- .resources = &keypad_resources[0],
- },
-};
-
-static irqreturn_t tc3589x_irq(int irq, void *data)
-{
- struct tc3589x *tc3589x = data;
- int status;
-
-again:
- status = tc3589x_reg_read(tc3589x, TC3589x_IRQST);
- if (status < 0)
- return IRQ_NONE;
-
- while (status) {
- int bit = __ffs(status);
-
- handle_nested_irq(tc3589x->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. In such a case, recheck for any interrupt which is still
- * pending.
- */
- status = tc3589x_reg_read(tc3589x, TC3589x_IRQST);
- if (status)
- goto again;
-
- return IRQ_HANDLED;
-}
-
-static int tc3589x_irq_init(struct tc3589x *tc3589x)
-{
- int base = tc3589x->irq_base;
- int irq;
-
- for (irq = base; irq < base + TC3589x_NR_INTERNAL_IRQS; irq++) {
- irq_set_chip_data(irq, tc3589x);
- irq_set_chip_and_handler(irq, &dummy_irq_chip,
- handle_edge_irq);
- irq_set_nested_thread(irq, 1);
-#ifdef CONFIG_ARM
- set_irq_flags(irq, IRQF_VALID);
-#else
- irq_set_noprobe(irq);
-#endif
- }
-
- return 0;
-}
-
-static void tc3589x_irq_remove(struct tc3589x *tc3589x)
-{
- int base = tc3589x->irq_base;
- int irq;
-
- for (irq = base; irq < base + TC3589x_NR_INTERNAL_IRQS; irq++) {
-#ifdef CONFIG_ARM
- set_irq_flags(irq, 0);
-#endif
- irq_set_chip_and_handler(irq, NULL, NULL);
- irq_set_chip_data(irq, NULL);
- }
-}
-
-static int tc3589x_chip_init(struct tc3589x *tc3589x)
-{
- int manf, ver, ret;
-
- manf = tc3589x_reg_read(tc3589x, TC3589x_MANFCODE);
- if (manf < 0)
- return manf;
-
- ver = tc3589x_reg_read(tc3589x, TC3589x_VERSION);
- if (ver < 0)
- return ver;
-
- if (manf != TC3589x_MANFCODE_MAGIC) {
- dev_err(tc3589x->dev, "unknown manufacturer: %#x\n", manf);
- return -EINVAL;
- }
-
- dev_info(tc3589x->dev, "manufacturer: %#x, version: %#x\n", manf, ver);
-
- /*
- * Put everything except the IRQ module into reset;
- * also spare the GPIO module for any pin initialization
- * done during pre-kernel boot
- */
- ret = tc3589x_reg_write(tc3589x, TC3589x_RSTCTRL,
- TC3589x_RSTCTRL_TIMRST
- | TC3589x_RSTCTRL_ROTRST
- | TC3589x_RSTCTRL_KBDRST);
- if (ret < 0)
- return ret;
-
- /* Clear the reset interrupt. */
- return tc3589x_reg_write(tc3589x, TC3589x_RSTINTCLR, 0x1);
-}
-
-static int __devinit tc3589x_device_init(struct tc3589x *tc3589x)
-{
- int ret = 0;
- unsigned int blocks = tc3589x->pdata->block;
-
- if (blocks & TC3589x_BLOCK_GPIO) {
- ret = mfd_add_devices(tc3589x->dev, -1, tc3589x_dev_gpio,
- ARRAY_SIZE(tc3589x_dev_gpio), NULL,
- tc3589x->irq_base);
- if (ret) {
- dev_err(tc3589x->dev, "failed to add gpio child\n");
- return ret;
- }
- dev_info(tc3589x->dev, "added gpio block\n");
- }
-
- if (blocks & TC3589x_BLOCK_KEYPAD) {
- ret = mfd_add_devices(tc3589x->dev, -1, tc3589x_dev_keypad,
- ARRAY_SIZE(tc3589x_dev_keypad), NULL,
- tc3589x->irq_base);
- if (ret) {
- dev_err(tc3589x->dev, "failed to keypad child\n");
- return ret;
- }
- dev_info(tc3589x->dev, "added keypad block\n");
- }
-
- return ret;
-}
-
-static int __devinit tc3589x_probe(struct i2c_client *i2c,
- const struct i2c_device_id *id)
-{
- struct tc3589x_platform_data *pdata = i2c->dev.platform_data;
- struct tc3589x *tc3589x;
- int ret;
-
- if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA
- | I2C_FUNC_SMBUS_I2C_BLOCK))
- return -EIO;
-
- tc3589x = kzalloc(sizeof(struct tc3589x), GFP_KERNEL);
- if (!tc3589x)
- return -ENOMEM;
-
- mutex_init(&tc3589x->lock);
-
- tc3589x->dev = &i2c->dev;
- tc3589x->i2c = i2c;
- tc3589x->pdata = pdata;
- tc3589x->irq_base = pdata->irq_base;
- tc3589x->num_gpio = id->driver_data;
-
- i2c_set_clientdata(i2c, tc3589x);
-
- ret = tc3589x_chip_init(tc3589x);
- if (ret)
- goto out_free;
-
- ret = tc3589x_irq_init(tc3589x);
- if (ret)
- goto out_free;
-
- ret = request_threaded_irq(tc3589x->i2c->irq, NULL, tc3589x_irq,
- IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
- "tc3589x", tc3589x);
- if (ret) {
- dev_err(tc3589x->dev, "failed to request IRQ: %d\n", ret);
- goto out_removeirq;
- }
-
- ret = tc3589x_device_init(tc3589x);
- if (ret) {
- dev_err(tc3589x->dev, "failed to add child devices\n");
- goto out_freeirq;
- }
-
- return 0;
-
-out_freeirq:
- free_irq(tc3589x->i2c->irq, tc3589x);
-out_removeirq:
- tc3589x_irq_remove(tc3589x);
-out_free:
- kfree(tc3589x);
- return ret;
-}
-
-static int __devexit tc3589x_remove(struct i2c_client *client)
-{
- struct tc3589x *tc3589x = i2c_get_clientdata(client);
-
- mfd_remove_devices(tc3589x->dev);
-
- free_irq(tc3589x->i2c->irq, tc3589x);
- tc3589x_irq_remove(tc3589x);
-
- kfree(tc3589x);
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int tc3589x_suspend(struct device *dev)
-{
- struct tc3589x *tc3589x = dev_get_drvdata(dev);
- struct i2c_client *client = tc3589x->i2c;
- int ret = 0;
-
- /* put the system to sleep mode */
- if (!device_may_wakeup(&client->dev))
- ret = tc3589x_reg_write(tc3589x, TC3589x_CLKMODE,
- TC3589x_CLKMODE_MODCTL_SLEEP);
-
- return ret;
-}
-
-static int tc3589x_resume(struct device *dev)
-{
- struct tc3589x *tc3589x = dev_get_drvdata(dev);
- struct i2c_client *client = tc3589x->i2c;
- int ret = 0;
-
- /* enable the system into operation */
- if (!device_may_wakeup(&client->dev))
- ret = tc3589x_reg_write(tc3589x, TC3589x_CLKMODE,
- TC3589x_CLKMODE_MODCTL_OPERATION);
-
- return ret;
-}
-
-static const SIMPLE_DEV_PM_OPS(tc3589x_dev_pm_ops, tc3589x_suspend,
- tc3589x_resume);
-#endif
-
-static const struct i2c_device_id tc3589x_id[] = {
- { "tc3589x", 24 },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, tc3589x_id);
-
-static struct i2c_driver tc3589x_driver = {
- .driver.name = "tc3589x",
- .driver.owner = THIS_MODULE,
-#ifdef CONFIG_PM
- .driver.pm = &tc3589x_dev_pm_ops,
-#endif
- .probe = tc3589x_probe,
- .remove = __devexit_p(tc3589x_remove),
- .id_table = tc3589x_id,
-};
-
-static int __init tc3589x_init(void)
-{
- return i2c_add_driver(&tc3589x_driver);
-}
-subsys_initcall(tc3589x_init);
-
-static void __exit tc3589x_exit(void)
-{
- i2c_del_driver(&tc3589x_driver);
-}
-module_exit(tc3589x_exit);
-
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("TC3589x MFD core driver");
-MODULE_AUTHOR("Hanumath Prasad, Rabin Vincent");
generated by cgit (git 2.34.1) at 2025-03-12 14:28:36 +0000