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@ -1,15 +1,3 @@ |
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/*
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* board-n516-display.c -- Platform device for N516 display |
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* |
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* Copyright (C) 2009, Yauhen Kharuzhy <jekhor@gmail.com> |
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* Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de> |
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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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#include <linux/module.h> |
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#include <linux/version.h> |
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#include <linux/init.h> |
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@ -32,7 +20,6 @@ |
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#include <asm/mach-jz4740/gpio.h> |
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#include <asm/mach-jz4740/board-n516.h> |
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static int batt_level=0; |
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module_param(batt_level, int, 0); |
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@ -80,20 +67,15 @@ static const unsigned int n516_lpc_keymap[] = { |
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[0x1c] = KEY_POWER, |
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[0x1d] = KEY_ESC, |
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[0x1e] = KEY_SLEEP, |
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/* [0x1f] = KEY_WAKEUP,*/ |
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[0x1f] = KEY_WAKEUP, |
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}; |
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static const unsigned int batt_charge[] = {0, 7, 20, 45, 65, 80, 100}; |
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#define MAX_BAT_LEVEL (ARRAY_SIZE(batt_charge) - 1) |
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#define MAX_BAT_LEVEL 6 |
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/* Insmod parameters */ |
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I2C_CLIENT_INSMOD_1(n516_lpc); |
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static inline int n516_bat_usb_connected(void) |
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{ |
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return !gpio_get_value(GPIO_USB_DETECT); |
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} |
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static inline int n516_bat_charging(void) |
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{ |
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return !gpio_get_value(GPIO_CHARG_STAT_N); |
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@ -101,7 +83,7 @@ static inline int n516_bat_charging(void) |
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static int n516_bat_get_status(struct power_supply *b) |
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{ |
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if (n516_bat_usb_connected()) { |
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if (power_supply_am_i_supplied(b)) { |
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if (n516_bat_charging()) |
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return POWER_SUPPLY_STATUS_CHARGING; |
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else |
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@ -141,6 +123,9 @@ static int n516_bat_get_property(struct power_supply *b, |
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static void n516_bat_power_changed(struct power_supply *p) |
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{ |
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if (power_supply_am_i_supplied(p) && !n516_bat_charging()) |
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the_lpc->battery_level = MAX_BAT_LEVEL; |
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power_supply_changed(p); |
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} |
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@ -165,7 +150,7 @@ static irqreturn_t n516_bat_charge_irq(int irq, void *dev) |
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dev_dbg(psy->dev, "Battery charging IRQ\n"); |
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if (n516_bat_usb_connected() && !n516_bat_charging()) |
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if (power_supply_am_i_supplied(psy) && !n516_bat_charging()) |
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the_lpc->battery_level = MAX_BAT_LEVEL; |
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power_supply_changed(psy); |
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@ -173,10 +158,9 @@ static irqreturn_t n516_bat_charge_irq(int irq, void *dev) |
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return IRQ_HANDLED; |
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} |
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static int n516_lpc_set_normal_mode(struct n516_lpc_chip *chip) |
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static int n516_lpc_send_message(struct n516_lpc_chip *chip, unsigned char val) |
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{ |
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struct i2c_client *client = chip->i2c_client; |
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unsigned char val = 0x02; |
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struct i2c_msg msg = {client->addr, client->flags, 1, &val}; |
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int ret = 0; |
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@ -211,7 +195,6 @@ static void n516_key_event(struct n516_lpc_chip *chip, unsigned char keycode) |
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input_sync(chip->input); |
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} |
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static void n516_battery_event(struct n516_lpc_chip *chip, unsigned char battery_level) |
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{ |
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if (battery_level != chip->battery_level) { |
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@ -220,7 +203,7 @@ static void n516_battery_event(struct n516_lpc_chip *chip, unsigned char battery |
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} |
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} |
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static irqreturn_t n516_lpc_irq(int irq, void *devid) |
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static irqreturn_t n516_lpc_irq_thread(int irq, void *devid) |
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{ |
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struct n516_lpc_chip *chip = (struct n516_lpc_chip*)devid; |
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int ret; |
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@ -228,6 +211,9 @@ static irqreturn_t n516_lpc_irq(int irq, void *devid) |
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struct i2c_client *client = chip->i2c_client; |
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struct i2c_msg msg = {client->addr, client->flags | I2C_M_RD, 1, &raw_msg}; |
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if (client->dev.power.status != DPM_ON) |
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return IRQ_HANDLED; |
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ret = i2c_transfer(client->adapter, &msg, 1); |
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if (ret != 1) { |
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dev_dbg(&client->dev, "I2C error: %d\n", ret); |
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@ -236,27 +222,19 @@ static irqreturn_t n516_lpc_irq(int irq, void *devid) |
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dev_dbg(&client->dev, "msg: 0x%02x\n", raw_msg); |
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if ((raw_msg & 0x40) < ARRAY_SIZE(n516_lpc_keymap)) { |
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/* Ack wakeup event */ |
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if ((raw_msg & ~0x40) < ARRAY_SIZE(n516_lpc_keymap)) |
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n516_key_event(chip, raw_msg); |
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} else if ((raw_msg >= 0x81) && (raw_msg <= 0x87)) { |
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else if ((raw_msg >= 0x81) && (raw_msg <= 0x87)) |
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n516_battery_event(chip, raw_msg - 0x81); |
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} else { |
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n516_lpc_set_normal_mode(chip); |
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dev_warn(&client->dev, "Unkown message: %x\n", raw_msg); |
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ret = i2c_transfer(client->adapter, &msg, 1); |
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if (ret != 1) { |
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dev_dbg(&client->dev, "I2C error: %d\n", ret); |
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} else { |
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dev_warn(&client->dev, "Unkown message part 2: %x\n", raw_msg); |
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} |
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} |
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else if (raw_msg == 0x7e) |
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n516_lpc_send_message(chip, 0x00); |
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else |
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dev_warn(&client->dev, "Unknown message: %x\n", raw_msg); |
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if (chip->suspending) |
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chip->can_sleep = 0; |
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printk("foobar\n"); |
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return IRQ_HANDLED; |
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} |
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@ -299,7 +277,7 @@ static struct notifier_block n516_lpc_notif_block = { |
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.notifier_call = n516_lpc_suspend_notifier, |
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}; |
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static int n516_lpc_probe(struct i2c_client *client, const struct i2c_device_id *id) |
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static int __devinit n516_lpc_probe(struct i2c_client *client, const struct i2c_device_id *id) |
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{ |
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struct n516_lpc_chip *chip; |
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struct input_dev *input; |
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@ -314,6 +292,9 @@ static int n516_lpc_probe(struct i2c_client *client, const struct i2c_device_id |
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chip->i2c_client = client; |
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if ((batt_level > 0) && (batt_level < ARRAY_SIZE(batt_charge))) |
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chip->battery_level = batt_level; |
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else |
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chip->battery_level = 1; |
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i2c_set_clientdata(client, chip); |
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ret = gpio_request(GPIO_LPC_INT, "LPC interrupt request"); |
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@ -322,13 +303,14 @@ static int n516_lpc_probe(struct i2c_client *client, const struct i2c_device_id |
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goto err_gpio_req_lpcint; |
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} |
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ret = gpio_request(GPIO_CHARG_STAT_N, "LPC interrupt request"); |
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ret = gpio_request(GPIO_CHARG_STAT_N, "LPC charging status"); |
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if (ret) { |
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dev_err(&client->dev, "Unable to reguest CHARG STAT GPIO\n"); |
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goto err_gpio_req_chargstat; |
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} |
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n516_lpc_set_normal_mode(chip); |
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/* Enter normal mode */ |
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n516_lpc_send_message(chip, 0x2); |
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input = input_allocate_device(); |
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if (!input) { |
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@ -366,18 +348,18 @@ static int n516_lpc_probe(struct i2c_client *client, const struct i2c_device_id |
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goto err_bat_reg; |
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} |
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if (n516_bat_usb_connected() && !n516_bat_charging()) |
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the_lpc->battery_level = MAX_BAT_LEVEL; |
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ret = request_threaded_irq(gpio_to_irq(GPIO_LPC_INT), NULL, n516_lpc_irq, |
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IRQF_TRIGGER_FALLING | IRQF_ONESHOT, "lpc", chip); |
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ret = request_threaded_irq(gpio_to_irq(GPIO_LPC_INT), NULL, |
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n516_lpc_irq_thread, |
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IRQF_TRIGGER_FALLING | IRQF_ONESHOT, |
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"lpc", chip); |
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if (ret) { |
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dev_err(&client->dev, "request_irq failed: %d\n", ret); |
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goto err_request_lpc_irq; |
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} |
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ret = request_irq(gpio_to_irq(GPIO_CHARG_STAT_N), n516_bat_charge_irq, |
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IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING, "battery charging", &n516_battery); |
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IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING, |
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"battery charging", &n516_battery); |
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if (ret) { |
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dev_err(&client->dev, "Unable to claim battery charging IRQ\n"); |
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goto err_request_chrg_irq; |
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@ -416,7 +398,7 @@ err_gpio_req_lpcint: |
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return ret; |
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} |
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static int n516_lpc_remove(struct i2c_client *client) |
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static int __devexit n516_lpc_remove(struct i2c_client *client) |
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{ |
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struct n516_lpc_chip *chip = i2c_get_clientdata(client); |
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@ -458,6 +440,7 @@ static int n516_lpc_resume(struct i2c_client *client) |
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#define n516_lpc_resume NULL |
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#endif |
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static struct i2c_driver n516_lpc_driver = { |
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.class = I2C_CLASS_HWMON, |
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.driver = { |
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@ -473,19 +456,22 @@ static struct i2c_driver n516_lpc_driver = { |
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.resume = n516_lpc_resume, |
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}; |
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static int n516_lpc_init(void) |
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static int __init n516_lpc_init(void) |
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{ |
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return i2c_add_driver(&n516_lpc_driver); |
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} |
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module_init(n516_lpc_init); |
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static void n516_lpc_exit(void) |
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static void __exit n516_lpc_exit(void) |
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{ |
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i2c_del_driver(&n516_lpc_driver); |
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} |
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module_init(n516_lpc_init); |
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module_exit(n516_lpc_exit); |
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MODULE_AUTHOR("Yauhen Kharuzhy"); |
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MODULE_LICENSE("GPL"); |
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MODULE_DESCRIPTION("Keys and power controller driver for N516"); |
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MODULE_ALIAS("platform:n516-keys"); |
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