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path: root/target/linux/xburst/files-2.6.32/drivers/i2c/chips/n516-lpc.c
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Diffstat (limited to 'target/linux/xburst/files-2.6.32/drivers/i2c/chips/n516-lpc.c')
-rw-r--r--target/linux/xburst/files-2.6.32/drivers/i2c/chips/n516-lpc.c477
1 files changed, 0 insertions, 477 deletions
diff --git a/target/linux/xburst/files-2.6.32/drivers/i2c/chips/n516-lpc.c b/target/linux/xburst/files-2.6.32/drivers/i2c/chips/n516-lpc.c
deleted file mode 100644
index 20357ee2eb..0000000000
--- a/target/linux/xburst/files-2.6.32/drivers/i2c/chips/n516-lpc.c
+++ /dev/null
@@ -1,477 +0,0 @@
-#include <linux/module.h>
-#include <linux/version.h>
-#include <linux/init.h>
-#include <linux/fs.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/sched.h>
-#include <linux/pm.h>
-#include <linux/sysctl.h>
-#include <linux/proc_fs.h>
-#include <linux/delay.h>
-#include <linux/platform_device.h>
-#include <linux/input.h>
-#include <linux/power_supply.h>
-#include <linux/suspend.h>
-
-#include <linux/i2c.h>
-
-#include <asm/mach-jz4740/irq.h>
-#include <asm/mach-jz4740/gpio.h>
-#include <asm/mach-jz4740/board-n516.h>
-
-static int batt_level=0;
-module_param(batt_level, int, 0);
-
-struct n516_lpc_chip {
- struct i2c_client *i2c_client;
- struct input_dev *input;
- unsigned int battery_level;
- unsigned int suspending:1, can_sleep:1;
-};
-
-static struct n516_lpc_chip *the_lpc;
-
-struct i2c_device_id n516_lpc_i2c_ids[] = {
- {"LPC524", 0},
- {},
-};
-
-MODULE_DEVICE_TABLE(i2c, n516_lpc_i2c_ids);
-
-static const unsigned short normal_i2c[] = {0x54, I2C_CLIENT_END};
-
-static const unsigned int n516_lpc_keymap[] = {
- [0x01] = KEY_4,
- [0x02] = KEY_3,
- [0x03] = KEY_2,
- [0x04] = KEY_1,
- [0x05] = KEY_0,
- [0x07] = KEY_9,
- [0x08] = KEY_8,
- [0x09] = KEY_7,
- [0x0a] = KEY_6,
- [0x0b] = KEY_5,
- [0x0d] = KEY_PLAYPAUSE,
- [0x0e] = KEY_MENU,
- [0x0f] = KEY_SEARCH,
- [0x10] = KEY_DIRECTION,
- [0x11] = KEY_SPACE,
- [0x13] = KEY_ENTER,
- [0x14] = KEY_UP,
- [0x15] = KEY_DOWN,
- [0x16] = KEY_RIGHT,
- [0x17] = KEY_LEFT,
- [0x19] = KEY_PAGEDOWN,
- [0x1a] = KEY_PAGEUP,
- [0x1c] = KEY_POWER,
- [0x1d] = KEY_ESC,
- [0x1e] = KEY_SLEEP,
- [0x1f] = KEY_WAKEUP,
-};
-
-static const unsigned int batt_charge[] = {0, 7, 20, 45, 65, 80, 100};
-#define MAX_BAT_LEVEL 6
-
-/* Insmod parameters */
-I2C_CLIENT_INSMOD_1(n516_lpc);
-
-static inline int n516_bat_charging(void)
-{
- return !gpio_get_value(GPIO_CHARG_STAT_N);
-}
-
-static int n516_bat_get_status(struct power_supply *b)
-{
- if (power_supply_am_i_supplied(b)) {
- if (n516_bat_charging())
- return POWER_SUPPLY_STATUS_CHARGING;
- else
- return POWER_SUPPLY_STATUS_FULL;
- } else {
- return POWER_SUPPLY_STATUS_DISCHARGING;
- }
-}
-
-static int n516_bat_get_charge(struct power_supply *b)
-{
- return batt_charge[the_lpc->battery_level];
-}
-
-static int n516_bat_get_property(struct power_supply *b,
- enum power_supply_property psp,
- union power_supply_propval *val)
-{
- switch (psp) {
- case POWER_SUPPLY_PROP_STATUS:
- val->intval = n516_bat_get_status(b);
- break;
- case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
- val->intval = 100;
- break;
- case POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN:
- val->intval = 0;
- break;
- case POWER_SUPPLY_PROP_CHARGE_NOW:
- val->intval = n516_bat_get_charge(b);
- break;
- default:
- return -EINVAL;
- }
- return 0;
-}
-
-static void n516_bat_power_changed(struct power_supply *p)
-{
- if (power_supply_am_i_supplied(p) && !n516_bat_charging())
- the_lpc->battery_level = MAX_BAT_LEVEL;
-
- power_supply_changed(p);
-}
-
-static enum power_supply_property n516_bat_properties[] = {
- POWER_SUPPLY_PROP_STATUS,
- POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
- POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN,
- POWER_SUPPLY_PROP_CHARGE_NOW,
-};
-
-static struct power_supply n516_battery = {
- .name = "n516-battery",
- .get_property = n516_bat_get_property,
- .properties = n516_bat_properties,
- .num_properties = ARRAY_SIZE(n516_bat_properties),
- .external_power_changed = n516_bat_power_changed,
-};
-
-static irqreturn_t n516_bat_charge_irq(int irq, void *dev)
-{
- struct power_supply *psy = dev;
-
- dev_dbg(psy->dev, "Battery charging IRQ\n");
-
- if (power_supply_am_i_supplied(psy) && !n516_bat_charging())
- the_lpc->battery_level = MAX_BAT_LEVEL;
-
- power_supply_changed(psy);
-
- return IRQ_HANDLED;
-}
-
-static int n516_lpc_send_message(struct n516_lpc_chip *chip, unsigned char val)
-{
- struct i2c_client *client = chip->i2c_client;
- struct i2c_msg msg = {client->addr, client->flags, 1, &val};
- int ret = 0;
-
- ret = i2c_transfer(client->adapter, &msg, 1);
- return ret > 0 ? 0 : ret;
-}
-
-static void n516_key_event(struct n516_lpc_chip *chip, unsigned char keycode)
-{
- struct i2c_client *client = chip->i2c_client;
- bool long_press = false;
-
- if (keycode & 0x40) {
- keycode &= ~0x40;
- long_press = true;
- }
-
- dev_dbg(&client->dev, "keycode: 0x%02x, long_press: 0x%02x\n", keycode, (unsigned int)long_press);
-
- if (keycode >= ARRAY_SIZE(n516_lpc_keymap) || n516_lpc_keymap[keycode] == 0)
- return;
-
- if (long_press)
- input_report_key(chip->input, KEY_LEFTALT, 1);
-
- input_report_key(chip->input, n516_lpc_keymap[keycode], 1);
- input_sync(chip->input);
- input_report_key(chip->input, n516_lpc_keymap[keycode], 0);
-
- if (long_press)
- input_report_key(chip->input, KEY_LEFTALT, 0);
- input_sync(chip->input);
-}
-
-static void n516_battery_event(struct n516_lpc_chip *chip, unsigned char battery_level)
-{
- if (battery_level != chip->battery_level) {
- chip->battery_level = battery_level;
- power_supply_changed(&n516_battery);
- }
-}
-
-static irqreturn_t n516_lpc_irq_thread(int irq, void *devid)
-{
- struct n516_lpc_chip *chip = (struct n516_lpc_chip*)devid;
- int ret;
- unsigned char raw_msg;
- struct i2c_client *client = chip->i2c_client;
- struct i2c_msg msg = {client->addr, client->flags | I2C_M_RD, 1, &raw_msg};
-
- if (client->dev.power.status >= DPM_OFF)
- return IRQ_HANDLED;
-
- ret = i2c_transfer(client->adapter, &msg, 1);
- if (ret != 1) {
- dev_dbg(&client->dev, "I2C error: %d\n", ret);
- return IRQ_HANDLED;
- }
-
- dev_dbg(&client->dev, "msg: 0x%02x\n", raw_msg);
-
- /* Ack wakeup event */
- if ((raw_msg & ~0x40) < ARRAY_SIZE(n516_lpc_keymap))
- n516_key_event(chip, raw_msg);
- else if ((raw_msg >= 0x81) && (raw_msg <= 0x87))
- n516_battery_event(chip, raw_msg - 0x81);
- else if (raw_msg == 0x7e)
- n516_lpc_send_message(chip, 0x00);
- else
- dev_warn(&client->dev, "Unknown message: %x\n", raw_msg);
-
- if (chip->suspending)
- chip->can_sleep = 0;
-
- return IRQ_HANDLED;
-}
-
-static void n516_lpc_power_off(void)
-{
- struct i2c_client *client = the_lpc->i2c_client;
- unsigned char val = 0x01;
- struct i2c_msg msg = {client->addr, client->flags, 1, &val};
-
- printk("Issue LPC POWEROFF command...\n");
- while (1)
- i2c_transfer(client->adapter, &msg, 1);
-}
-
-static int n516_lpc_detect(struct i2c_client *client, int kind, struct i2c_board_info *info)
-{
- return 0;
-}
-
-static int n516_lpc_suspend_notifier(struct notifier_block *nb,
- unsigned long event,
- void *dummy)
-{
- switch(event) {
- case PM_SUSPEND_PREPARE:
- the_lpc->suspending = 1;
- the_lpc->can_sleep = 1;
- break;
- case PM_POST_SUSPEND:
- the_lpc->suspending = 0;
- the_lpc->can_sleep = 1;
- break;
- default:
- return NOTIFY_DONE;
- }
- return NOTIFY_OK;
-}
-
-static struct notifier_block n516_lpc_notif_block = {
- .notifier_call = n516_lpc_suspend_notifier,
-};
-
-static int __devinit n516_lpc_probe(struct i2c_client *client, const struct i2c_device_id *id)
-{
- struct n516_lpc_chip *chip;
- struct input_dev *input;
- int ret = 0;
- int i;
-
- chip = kzalloc(sizeof(*chip), GFP_KERNEL);
- if (!chip)
- return -ENOMEM;
-
- the_lpc = chip;
- chip->i2c_client = client;
- if ((batt_level > 0) && (batt_level < ARRAY_SIZE(batt_charge)))
- chip->battery_level = batt_level;
- else
- chip->battery_level = 1;
-
- i2c_set_clientdata(client, chip);
-
- ret = gpio_request(GPIO_LPC_INT, "LPC interrupt request");
- if (ret) {
- dev_err(&client->dev, "Unable to reguest LPC INT GPIO\n");
- goto err_gpio_req_lpcint;
- }
-
- ret = gpio_request(GPIO_CHARG_STAT_N, "LPC charging status");
- if (ret) {
- dev_err(&client->dev, "Unable to reguest CHARG STAT GPIO\n");
- goto err_gpio_req_chargstat;
- }
-
- /* Enter normal mode */
- n516_lpc_send_message(chip, 0x2);
-
- input = input_allocate_device();
- if (!input) {
- dev_err(&client->dev, "Unable to allocate input device\n");
- ret = -ENOMEM;
- goto err_input_alloc;
- }
-
- chip->input = input;
-
- __set_bit(EV_KEY, input->evbit);
-
- for (i = 0; i < ARRAY_SIZE(n516_lpc_keymap); i++)
- __set_bit(n516_lpc_keymap[i], input->keybit);
-
- __set_bit(KEY_LEFTALT, input->keybit);
-
- input->name = "n516-keys";
- input->phys = "n516-keys/input0";
- input->dev.parent = &client->dev;
- input->id.bustype = BUS_I2C;
- input->id.vendor = 0x0001;
- input->id.product = 0x0001;
- input->id.version = 0x0100;
-
- ret = input_register_device(input);
- if (ret < 0) {
- dev_err(&client->dev, "Unable to register input device\n");
- goto err_input_register;
- }
-
- ret = power_supply_register(NULL, &n516_battery);
- if (ret) {
- dev_err(&client->dev, "Unable to register N516 battery\n");
- goto err_bat_reg;
- }
-
- ret = request_threaded_irq(gpio_to_irq(GPIO_LPC_INT), NULL,
- n516_lpc_irq_thread,
- IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
- "lpc", chip);
- if (ret) {
- dev_err(&client->dev, "request_irq failed: %d\n", ret);
- goto err_request_lpc_irq;
- }
-
- ret = request_irq(gpio_to_irq(GPIO_CHARG_STAT_N), n516_bat_charge_irq,
- IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
- "battery charging", &n516_battery);
- if (ret) {
- dev_err(&client->dev, "Unable to claim battery charging IRQ\n");
- goto err_request_chrg_irq;
- }
-
- pm_power_off = n516_lpc_power_off;
- ret = register_pm_notifier(&n516_lpc_notif_block);
- if (ret) {
- dev_err(&client->dev, "Unable to register PM notify block\n");
- goto err_reg_pm_notifier;
- }
-
- device_init_wakeup(&client->dev, 1);
-
- return 0;
-
- unregister_pm_notifier(&n516_lpc_notif_block);
-err_reg_pm_notifier:
- free_irq(gpio_to_irq(GPIO_CHARG_STAT_N), &n516_battery);
-err_request_chrg_irq:
- free_irq(gpio_to_irq(GPIO_LPC_INT), chip);
-err_request_lpc_irq:
- power_supply_unregister(&n516_battery);
-err_bat_reg:
- input_unregister_device(input);
-err_input_register:
- input_free_device(input);
-err_input_alloc:
- gpio_free(GPIO_CHARG_STAT_N);
-err_gpio_req_chargstat:
- gpio_free(GPIO_LPC_INT);
-err_gpio_req_lpcint:
- i2c_set_clientdata(client, NULL);
- kfree(chip);
-
- return ret;
-}
-
-static int __devexit n516_lpc_remove(struct i2c_client *client)
-{
- struct n516_lpc_chip *chip = i2c_get_clientdata(client);
-
- unregister_pm_notifier(&n516_lpc_notif_block);
- pm_power_off = NULL;
- free_irq(gpio_to_irq(GPIO_CHARG_STAT_N), &n516_battery);
- free_irq(gpio_to_irq(GPIO_LPC_INT), chip);
- power_supply_unregister(&n516_battery);
- input_unregister_device(chip->input);
- gpio_free(GPIO_CHARG_STAT_N);
- gpio_free(GPIO_LPC_INT);
- i2c_set_clientdata(client, NULL);
- kfree(chip);
-
- return 0;
-}
-
-#if CONFIG_PM
-static int n516_lpc_suspend(struct i2c_client *client, pm_message_t msg)
-{
- if (!the_lpc->can_sleep)
- return -EBUSY;
-
- if (device_may_wakeup(&client->dev))
- enable_irq_wake(gpio_to_irq(GPIO_LPC_INT));
-
- return 0;
-}
-
-static int n516_lpc_resume(struct i2c_client *client)
-{
- if (device_may_wakeup(&client->dev))
- disable_irq_wake(gpio_to_irq(GPIO_LPC_INT));
-
- return 0;
-}
-#else
-#define n516_lpc_suspend NULL
-#define n516_lpc_resume NULL
-#endif
-
-
-static struct i2c_driver n516_lpc_driver = {
- .class = I2C_CLASS_HWMON,
- .driver = {
- .name = "n516-keys",
- .owner = THIS_MODULE,
- },
- .probe = n516_lpc_probe,
- .remove = __devexit_p(n516_lpc_remove),
- .detect = n516_lpc_detect,
- .id_table = n516_lpc_i2c_ids,
- .address_data = &addr_data,
- .suspend = n516_lpc_suspend,
- .resume = n516_lpc_resume,
-};
-
-static int __init n516_lpc_init(void)
-{
- return i2c_add_driver(&n516_lpc_driver);
-}
-
-static void __exit n516_lpc_exit(void)
-{
- i2c_del_driver(&n516_lpc_driver);
-}
-
-
-module_init(n516_lpc_init);
-module_exit(n516_lpc_exit);
-
-MODULE_AUTHOR("Yauhen Kharuzhy");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Keys and power controller driver for N516");
-MODULE_ALIAS("platform:n516-keys");
-