diff options
Diffstat (limited to 'drivers/input/misc')
| -rw-r--r-- | drivers/input/misc/Kconfig | 38 | ||||
| -rw-r--r-- | drivers/input/misc/Makefile | 4 | ||||
| -rw-r--r-- | drivers/input/misc/bfin_rotary.c | 1 | ||||
| -rw-r--r-- | drivers/input/misc/kxtj9.c | 671 | ||||
| -rw-r--r-- | drivers/input/misc/mma8450.c | 256 | ||||
| -rw-r--r-- | drivers/input/misc/mpu3050.c | 376 | ||||
| -rw-r--r-- | drivers/input/misc/xen-kbdfront.c | 2 |
7 files changed, 1345 insertions, 3 deletions
diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index d1bf872..c9104bb 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -100,6 +100,27 @@ config INPUT_MAX8925_ONKEY To compile this driver as a module, choose M here: the module will be called max8925_onkey. +config INPUT_MMA8450 + tristate "MMA8450 - Freescale's 3-Axis, 8/12-bit Digital Accelerometer" + depends on I2C + select INPUT_POLLDEV + help + Say Y here if you want to support Freescale's MMA8450 Accelerometer + through I2C interface. + + To compile this driver as a module, choose M here: the + module will be called mma8450. + +config INPUT_MPU3050 + tristate "MPU3050 Triaxial gyroscope sensor" + depends on I2C + help + Say Y here if you want to support InvenSense MPU3050 + connected via an I2C bus. + + To compile this driver as a module, choose M here: the + module will be called mpu3050. + config INPUT_APANEL tristate "Fujitsu Lifebook Application Panel buttons" depends on X86 && I2C && LEDS_CLASS @@ -209,6 +230,23 @@ config INPUT_KEYSPAN_REMOTE To compile this driver as a module, choose M here: the module will be called keyspan_remote. +config INPUT_KXTJ9 + tristate "Kionix KXTJ9 tri-axis digital accelerometer" + depends on I2C + help + Say Y here to enable support for the Kionix KXTJ9 digital tri-axis + accelerometer. + + To compile this driver as a module, choose M here: the module will + be called kxtj9. + +config INPUT_KXTJ9_POLLED_MODE + bool "Enable polling mode support" + depends on INPUT_KXTJ9 + select INPUT_POLLDEV + help + Say Y here if you need accelerometer to work in polling mode. + config INPUT_POWERMATE tristate "Griffin PowerMate and Contour Jog support" depends on USB_ARCH_HAS_HCD diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index 4da7c3a..299ad5e 100644 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -25,8 +25,11 @@ obj-$(CONFIG_INPUT_DM355EVM) += dm355evm_keys.o obj-$(CONFIG_HP_SDC_RTC) += hp_sdc_rtc.o obj-$(CONFIG_INPUT_IXP4XX_BEEPER) += ixp4xx-beeper.o obj-$(CONFIG_INPUT_KEYSPAN_REMOTE) += keyspan_remote.o +obj-$(CONFIG_INPUT_KXTJ9) += kxtj9.o obj-$(CONFIG_INPUT_M68K_BEEP) += m68kspkr.o obj-$(CONFIG_INPUT_MAX8925_ONKEY) += max8925_onkey.o +obj-$(CONFIG_INPUT_MMA8450) += mma8450.o +obj-$(CONFIG_INPUT_MPU3050) += mpu3050.o obj-$(CONFIG_INPUT_PCAP) += pcap_keys.o obj-$(CONFIG_INPUT_PCF50633_PMU) += pcf50633-input.o obj-$(CONFIG_INPUT_PCF8574) += pcf8574_keypad.o @@ -46,4 +49,3 @@ obj-$(CONFIG_INPUT_WISTRON_BTNS) += wistron_btns.o obj-$(CONFIG_INPUT_WM831X_ON) += wm831x-on.o obj-$(CONFIG_INPUT_XEN_KBDDEV_FRONTEND) += xen-kbdfront.o obj-$(CONFIG_INPUT_YEALINK) += yealink.o - diff --git a/drivers/input/misc/bfin_rotary.c b/drivers/input/misc/bfin_rotary.c index 4f72bdd..d00edc9 100644 --- a/drivers/input/misc/bfin_rotary.c +++ b/drivers/input/misc/bfin_rotary.c @@ -6,7 +6,6 @@ */ #include <linux/module.h> -#include <linux/version.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/irq.h> diff --git a/drivers/input/misc/kxtj9.c b/drivers/input/misc/kxtj9.c new file mode 100644 index 0000000..c456f63 --- /dev/null +++ b/drivers/input/misc/kxtj9.c @@ -0,0 +1,671 @@ +/* + * Copyright (C) 2011 Kionix, Inc. + * Written by Chris Hudson <chudson@kionix.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * 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., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307, USA + */ + +#include <linux/delay.h> +#include <linux/i2c.h> +#include <linux/input.h> +#include <linux/interrupt.h> +#include <linux/slab.h> +#include <linux/input/kxtj9.h> +#include <linux/input-polldev.h> + +#define NAME "kxtj9" +#define G_MAX 8000 +/* OUTPUT REGISTERS */ +#define XOUT_L 0x06 +#define WHO_AM_I 0x0F +/* CONTROL REGISTERS */ +#define INT_REL 0x1A +#define CTRL_REG1 0x1B +#define INT_CTRL1 0x1E +#define DATA_CTRL 0x21 +/* CONTROL REGISTER 1 BITS */ +#define PC1_OFF 0x7F +#define PC1_ON (1 << 7) +/* Data ready funtion enable bit: set during probe if using irq mode */ +#define DRDYE (1 << 5) +/* INTERRUPT CONTROL REGISTER 1 BITS */ +/* Set these during probe if using irq mode */ +#define KXTJ9_IEL (1 << 3) +#define KXTJ9_IEA (1 << 4) +#define KXTJ9_IEN (1 << 5) +/* INPUT_ABS CONSTANTS */ +#define FUZZ 3 +#define FLAT 3 +/* RESUME STATE INDICES */ +#define RES_DATA_CTRL 0 +#define RES_CTRL_REG1 1 +#define RES_INT_CTRL1 2 +#define RESUME_ENTRIES 3 + +/* + * The following table lists the maximum appropriate poll interval for each + * available output data rate. + */ +static const struct { + unsigned int cutoff; + u8 mask; +} kxtj9_odr_table[] = { + { 3, ODR800F }, + { 5, ODR400F }, + { 10, ODR200F }, + { 20, ODR100F }, + { 40, ODR50F }, + { 80, ODR25F }, + { 0, ODR12_5F}, +}; + +struct kxtj9_data { + struct i2c_client *client; + struct kxtj9_platform_data pdata; + struct input_dev *input_dev; +#ifdef CONFIG_INPUT_KXTJ9_POLLED_MODE + struct input_polled_dev *poll_dev; +#endif + unsigned int last_poll_interval; + u8 shift; + u8 ctrl_reg1; + u8 data_ctrl; + u8 int_ctrl; +}; + +static int kxtj9_i2c_read(struct kxtj9_data *tj9, u8 addr, u8 *data, int len) +{ + struct i2c_msg msgs[] = { + { + .addr = tj9->client->addr, + .flags = tj9->client->flags, + .len = 1, + .buf = &addr, + }, + { + .addr = tj9->client->addr, + .flags = tj9->client->flags | I2C_M_RD, + .len = len, + .buf = data, + }, + }; + + return i2c_transfer(tj9->client->adapter, msgs, 2); +} + +static void kxtj9_report_acceleration_data(struct kxtj9_data *tj9) +{ + s16 acc_data[3]; /* Data bytes from hardware xL, xH, yL, yH, zL, zH */ + s16 x, y, z; + int err; + + err = kxtj9_i2c_read(tj9, XOUT_L, (u8 *)acc_data, 6); + if (err < 0) + dev_err(&tj9->client->dev, "accelerometer data read failed\n"); + + x = le16_to_cpu(acc_data[tj9->pdata.axis_map_x]) >> tj9->shift; + y = le16_to_cpu(acc_data[tj9->pdata.axis_map_y]) >> tj9->shift; + z = le16_to_cpu(acc_data[tj9->pdata.axis_map_z]) >> tj9->shift; + + input_report_abs(tj9->input_dev, ABS_X, tj9->pdata.negate_x ? -x : x); + input_report_abs(tj9->input_dev, ABS_Y, tj9->pdata.negate_y ? -y : y); + input_report_abs(tj9->input_dev, ABS_Z, tj9->pdata.negate_z ? -z : z); + input_sync(tj9->input_dev); +} + +static irqreturn_t kxtj9_isr(int irq, void *dev) +{ + struct kxtj9_data *tj9 = dev; + int err; + + /* data ready is the only possible interrupt type */ + kxtj9_report_acceleration_data(tj9); + + err = i2c_smbus_read_byte_data(tj9->client, INT_REL); + if (err < 0) + dev_err(&tj9->client->dev, + "error clearing interrupt status: %d\n", err); + + return IRQ_HANDLED; +} + +static int kxtj9_update_g_range(struct kxtj9_data *tj9, u8 new_g_range) +{ + switch (new_g_range) { + case KXTJ9_G_2G: + tj9->shift = 4; + break; + case KXTJ9_G_4G: + tj9->shift = 3; + break; + case KXTJ9_G_8G: + tj9->shift = 2; + break; + default: + return -EINVAL; + } + + tj9->ctrl_reg1 &= 0xe7; + tj9->ctrl_reg1 |= new_g_range; + + return 0; +} + +static int kxtj9_update_odr(struct kxtj9_data *tj9, unsigned int poll_interval) +{ + int err; + int i; + + /* Use the lowest ODR that can support the requested poll interval */ + for (i = 0; i < ARRAY_SIZE(kxtj9_odr_table); i++) { + tj9->data_ctrl = kxtj9_odr_table[i].mask; + if (poll_interval < kxtj9_odr_table[i].cutoff) + break; + } + + err = i2c_smbus_write_byte_data(tj9->client, CTRL_REG1, 0); + if (err < 0) + return err; + + err = i2c_smbus_write_byte_data(tj9->client, DATA_CTRL, tj9->data_ctrl); + if (err < 0) + return err; + + err = i2c_smbus_write_byte_data(tj9->client, CTRL_REG1, tj9->ctrl_reg1); + if (err < 0) + return err; + + return 0; +} + +static int kxtj9_device_power_on(struct kxtj9_data *tj9) +{ + if (tj9->pdata.power_on) + return tj9->pdata.power_on(); + + return 0; +} + +static void kxtj9_device_power_off(struct kxtj9_data *tj9) +{ + int err; + + tj9->ctrl_reg1 &= PC1_OFF; + err = i2c_smbus_write_byte_data(tj9->client, CTRL_REG1, tj9->ctrl_reg1); + if (err < 0) + dev_err(&tj9->client->dev, "soft power off failed\n"); + + if (tj9->pdata.power_off) + tj9->pdata.power_off(); +} + +static int kxtj9_enable(struct kxtj9_data *tj9) +{ + int err; + + err = kxtj9_device_power_on(tj9); + if (err < 0) + return err; + + /* ensure that PC1 is cleared before updating control registers */ + err = i2c_smbus_write_byte_data(tj9->client, CTRL_REG1, 0); + if (err < 0) + return err; + + /* only write INT_CTRL_REG1 if in irq mode */ + if (tj9->client->irq) { + err = i2c_smbus_write_byte_data(tj9->client, + INT_CTRL1, tj9->int_ctrl); + if (err < 0) + return err; + } + + err = kxtj9_update_g_range(tj9, tj9->pdata.g_range); + if (err < 0) + return err; + + /* turn on outputs */ + tj9->ctrl_reg1 |= PC1_ON; + err = i2c_smbus_write_byte_data(tj9->client, CTRL_REG1, tj9->ctrl_reg1); + if (err < 0) + return err; + + err = kxtj9_update_odr(tj9, tj9->last_poll_interval); + if (err < 0) + return err; + + /* clear initial interrupt if in irq mode */ + if (tj9->client->irq) { + err = i2c_smbus_read_byte_data(tj9->client, INT_REL); + if (err < 0) { + dev_err(&tj9->client->dev, + "error clearing interrupt: %d\n", err); + goto fail; + } + } + + return 0; + +fail: + kxtj9_device_power_off(tj9); + return err; +} + +static void kxtj9_disable(struct kxtj9_data *tj9) +{ + kxtj9_device_power_off(tj9); +} + +static int kxtj9_input_open(struct input_dev *input) +{ + struct kxtj9_data *tj9 = input_get_drvdata(input); + + return kxtj9_enable(tj9); +} + +static void kxtj9_input_close(struct input_dev *dev) +{ + struct kxtj9_data *tj9 = input_get_drvdata(dev); + + kxtj9_disable(tj9); +} + +static void __devinit kxtj9_init_input_device(struct kxtj9_data *tj9, + struct input_dev *input_dev) +{ + __set_bit(EV_ABS, input_dev->evbit); + input_set_abs_params(input_dev, ABS_X, -G_MAX, G_MAX, FUZZ, FLAT); + input_set_abs_params(input_dev, ABS_Y, -G_MAX, G_MAX, FUZZ, FLAT); + input_set_abs_params(input_dev, ABS_Z, -G_MAX, G_MAX, FUZZ, FLAT); + + input_dev->name = "kxtj9_accel"; + input_dev->id.bustype = BUS_I2C; + input_dev->dev.parent = &tj9->client->dev; +} + +static int __devinit kxtj9_setup_input_device(struct kxtj9_data *tj9) +{ + struct input_dev *input_dev; + int err; + + input_dev = input_allocate_device(); + if (!input_dev) { + dev_err(&tj9->client->dev, "input device allocate failed\n"); + return -ENOMEM; + } + + tj9->input_dev = input_dev; + + input_dev->open = kxtj9_input_open; + input_dev->close = kxtj9_input_close; + input_set_drvdata(input_dev, tj9); + + kxtj9_init_input_device(tj9, input_dev); + + err = input_register_device(tj9->input_dev); + if (err) { + dev_err(&tj9->client->dev, + "unable to register input polled device %s: %d\n", + tj9->input_dev->name, err); + input_free_device(tj9->input_dev); + return err; + } + + return 0; +} + +/* + * When IRQ mode is selected, we need to provide an interface to allow the user + * to change the output data rate of the part. For consistency, we are using + * the set_poll method, which accepts a poll interval in milliseconds, and then + * calls update_odr() while passing this value as an argument. In IRQ mode, the + * data outputs will not be read AT the requested poll interval, rather, the + * lowest ODR that can support the requested interval. The client application + * will be responsible for retrieving data from the input node at the desired + * interval. + */ + +/* Returns currently selected poll interval (in ms) */ +static ssize_t kxtj9_get_poll(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct i2c_client *client = to_i2c_client(dev); + struct kxtj9_data *tj9 = i2c_get_clientdata(client); + + return sprintf(buf, "%d\n", tj9->last_poll_interval); +} + +/* Allow users to select a new poll interval (in ms) */ +static ssize_t kxtj9_set_poll(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct i2c_client *client = to_i2c_client(dev); + struct kxtj9_data *tj9 = i2c_get_clientdata(client); + struct input_dev *input_dev = tj9->input_dev; + unsigned int interval; + int error; + + error = kstrtouint(buf, 10, &interval); + if (error < 0) + return error; + + /* Lock the device to prevent races with open/close (and itself) */ + mutex_lock(&input_dev->mutex); + + disable_irq(client->irq); + + /* + * Set current interval to the greater of the minimum interval or + * the requested interval + */ + tj9->last_poll_interval = max(interval, tj9->pdata.min_interval); + + kxtj9_update_odr(tj9, tj9->last_poll_interval); + + enable_irq(client->irq); + mutex_unlock(&input_dev->mutex); + + return count; +} + +static DEVICE_ATTR(poll, S_IRUGO|S_IWUSR, kxtj9_get_poll, kxtj9_set_poll); + +static struct attribute *kxtj9_attributes[] = { + &dev_attr_poll.attr, + NULL +}; + +static struct attribute_group kxtj9_attribute_group = { + .attrs = kxtj9_attributes +}; + + +#ifdef CONFIG_INPUT_KXTJ9_POLLED_MODE +static void kxtj9_poll(struct input_polled_dev *dev) +{ + struct kxtj9_data *tj9 = dev->private; + unsigned int poll_interval = dev->poll_interval; + + kxtj9_report_acceleration_data(tj9); + + if (poll_interval != tj9->last_poll_interval) { + kxtj9_update_odr(tj9, poll_interval); + tj9->last_poll_interval = poll_interval; + } +} + +static void kxtj9_polled_input_open(struct input_polled_dev *dev) +{ + struct kxtj9_data *tj9 = dev->private; + + kxtj9_enable(tj9); +} + +static void kxtj9_polled_input_close(struct input_polled_dev *dev) +{ + struct kxtj9_data *tj9 = dev->private; + + kxtj9_disable(tj9); +} + +static int __devinit kxtj9_setup_polled_device(struct kxtj9_data *tj9) +{ + int err; + struct input_polled_dev *poll_dev; + poll_dev = input_allocate_polled_device(); + + if (!poll_dev) { + dev_err(&tj9->client->dev, + "Failed to allocate polled device\n"); + return -ENOMEM; + } + + tj9->poll_dev = poll_dev; + tj9->input_dev = poll_dev->input; + + poll_dev->private = tj9; + poll_dev->poll = kxtj9_poll; + poll_dev->open = kxtj9_polled_input_open; + poll_dev->close = kxtj9_polled_input_close; + + kxtj9_init_input_device(tj9, poll_dev->input); + + err = input_register_polled_device(poll_dev); + if (err) { + dev_err(&tj9->client->dev, + "Unable to register polled device, err=%d\n", err); + input_free_polled_device(poll_dev); + return err; + } + + return 0; +} + +static void __devexit kxtj9_teardown_polled_device(struct kxtj9_data *tj9) +{ + input_unregister_polled_device(tj9->poll_dev); + input_free_polled_device(tj9->poll_dev); +} + +#else + +static inline int kxtj9_setup_polled_device(struct kxtj9_data *tj9) +{ + return -ENOSYS; +} + +static inline void kxtj9_teardown_polled_device(struct kxtj9_data *tj9) +{ +} + +#endif + +static int __devinit kxtj9_verify(struct kxtj9_data *tj9) +{ + int retval; + + retval = kxtj9_device_power_on(tj9); + if (retval < 0) + return retval; + + retval = i2c_smbus_read_byte_data(tj9->client, WHO_AM_I); + if (retval < 0) { + dev_err(&tj9->client->dev, "read err int source\n"); + goto out; + } + + retval = retval != 0x06 ? -EIO : 0; + +out: + kxtj9_device_power_off(tj9); + return retval; +} + +static int __devinit kxtj9_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + const struct kxtj9_platform_data *pdata = client->dev.platform_data; + struct kxtj9_data *tj9; + int err; + + if (!i2c_check_functionality(client->adapter, + I2C_FUNC_I2C | I2C_FUNC_SMBUS_BYTE_DATA)) { + dev_err(&client->dev, "client is not i2c capable\n"); + return -ENXIO; + } + + if (!pdata) { + dev_err(&client->dev, "platform data is NULL; exiting\n"); + return -EINVAL; + } + + tj9 = kzalloc(sizeof(*tj9), GFP_KERNEL); + if (!tj9) { + dev_err(&client->dev, + "failed to allocate memory for module data\n"); + return -ENOMEM; + } + + tj9->client = client; + tj9->pdata = *pdata; + + if (pdata->init) { + err = pdata->init(); + if (err < 0) + goto err_free_mem; + } + + err = kxtj9_verify(tj9); + if (err < 0) { + dev_err(&client->dev, "device not recognized\n"); + goto err_pdata_exit; + } + + i2c_set_clientdata(client, tj9); + + tj9->ctrl_reg1 = tj9->pdata.res_12bit | tj9->pdata.g_range; + tj9->data_ctrl = tj9->pdata.data_odr_init; + + if (client->irq) { + /* If in irq mode, populate INT_CTRL_REG1 and enable DRDY. */ + tj9->int_ctrl |= KXTJ9_IEN | KXTJ9_IEA | KXTJ9_IEL; + tj9->ctrl_reg1 |= DRDYE; + + err = kxtj9_setup_input_device(tj9); + if (err) + goto err_pdata_exit; + + err = request_threaded_irq(client->irq, NULL, kxtj9_isr, + IRQF_TRIGGER_RISING | IRQF_ONESHOT, + "kxtj9-irq", tj9); + if (err) { + dev_err(&client->dev, "request irq failed: %d\n", err); + goto err_destroy_input; + } + + err = sysfs_create_group(&client->dev.kobj, &kxtj9_attribute_group); + if (err) { + dev_err(&client->dev, "sysfs create failed: %d\n", err); + goto err_free_irq; + } + + } else { + err = kxtj9_setup_polled_device(tj9); + if (err) + goto err_pdata_exit; + } + + return 0; + +err_free_irq: + free_irq(client->irq, tj9); +err_destroy_input: + input_unregister_device(tj9->input_dev); +err_pdata_exit: + if (tj9->pdata.exit) + tj9->pdata.exit(); +err_free_mem: + kfree(tj9); + return err; +} + +static int __devexit kxtj9_remove(struct i2c_client *client) +{ + struct kxtj9_data *tj9 = i2c_get_clientdata(client); + + if (client->irq) { + sysfs_remove_group(&client->dev.kobj, &kxtj9_attribute_group); + free_irq(client->irq, tj9); + input_unregister_device(tj9->input_dev); + } else { + kxtj9_teardown_polled_device(tj9); + } + + if (tj9->pdata.exit) + tj9->pdata.exit(); + + kfree(tj9); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int kxtj9_suspend(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct kxtj9_data *tj9 = i2c_get_clientdata(client); + struct input_dev *input_dev = tj9->input_dev; + + mutex_lock(&input_dev->mutex); + + if (input_dev->users) + kxtj9_disable(tj9); + + mutex_unlock(&input_dev->mutex); + return 0; +} + +static int kxtj9_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct kxtj9_data *tj9 = i2c_get_clientdata(client); + struct input_dev *input_dev = tj9->input_dev; + int retval = 0; + + mutex_lock(&input_dev->mutex); + + if (input_dev->users) + kxtj9_enable(tj9); + + mutex_unlock(&input_dev->mutex); + return retval; +} +#endif + +static SIMPLE_DEV_PM_OPS(kxtj9_pm_ops, kxtj9_suspend, kxtj9_resume); + +static const struct i2c_device_id kxtj9_id[] = { + { NAME, 0 }, + { }, +}; + +MODULE_DEVICE_TABLE(i2c, kxtj9_id); + +static struct i2c_driver kxtj9_driver = { + .driver = { + .name = NAME, + .owner = THIS_MODULE, + .pm = &kxtj9_pm_ops, + }, + .probe = kxtj9_probe, + .remove = __devexit_p(kxtj9_remove), + .id_table = kxtj9_id, +}; + +static int __init kxtj9_init(void) +{ + return i2c_add_driver(&kxtj9_driver); +} +module_init(kxtj9_init); + +static void __exit kxtj9_exit(void) +{ + i2c_del_driver(&kxtj9_driver); +} +module_exit(kxtj9_exit); + +MODULE_DESCRIPTION("KXTJ9 accelerometer driver"); +MODULE_AUTHOR("Chris Hudson <chudson@kionix.com>"); +MODULE_LICENSE("GPL"); diff --git a/drivers/input/misc/mma8450.c b/drivers/input/misc/mma8450.c new file mode 100644 index 0000000..20f8f92 --- /dev/null +++ b/drivers/input/misc/mma8450.c @@ -0,0 +1,256 @@ +/* + * Driver for Freescale's 3-Axis Accelerometer MMA8450 + * + * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved. + * + * 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/kernel.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/delay.h> +#include <linux/i2c.h> +#include <linux/input-polldev.h> + +#define MMA8450_DRV_NAME "mma8450" + +#define MODE_CHANGE_DELAY_MS 100 +#define POLL_INTERVAL 100 +#define POLL_INTERVAL_MAX 500 + +/* register definitions */ +#define MMA8450_STATUS 0x00 +#define MMA8450_STATUS_ZXYDR 0x08 + +#define MMA8450_OUT_X8 0x01 +#define MMA8450_OUT_Y8 0x02 +#define MMA8450_OUT_Z8 0x03 + +#define MMA8450_OUT_X_LSB 0x05 +#define MMA8450_OUT_X_MSB 0x06 +#define MMA8450_OUT_Y_LSB 0x07 +#define MMA8450_OUT_Y_MSB 0x08 +#define MMA8450_OUT_Z_LSB 0x09 +#define MMA8450_OUT_Z_MSB 0x0a + +#define MMA8450_XYZ_DATA_CFG 0x16 + +#define MMA8450_CTRL_REG1 0x38 +#define MMA8450_CTRL_REG2 0x39 + +/* mma8450 status */ +struct mma8450 { + struct i2c_client *client; + struct input_polled_dev *idev; +}; + +static int mma8450_read(struct mma8450 *m, unsigned off) +{ + struct i2c_client *c = m->client; + int ret; + + ret = i2c_smbus_read_byte_data(c, off); + if (ret < 0) + dev_err(&c->dev, + "failed to read register 0x%02x, error %d\n", + off, ret); + + return ret; +} + +static int mma8450_write(struct mma8450 *m, unsigned off, u8 v) +{ + struct i2c_client *c = m->client; + int error; + + error = i2c_smbus_write_byte_data(c, off, v); + if (error < 0) { + dev_err(&c->dev, + "failed to write to register 0x%02x, error %d\n", + off, error); + return error; + } + + return 0; +} + +static int mma8450_read_xyz(struct mma8450 *m, int *x, int *y, int *z) +{ + struct i2c_client *c = m->client; + u8 buff[6]; + int err; + + err = i2c_smbus_read_i2c_block_data(c, MMA8450_OUT_X_LSB, 6, buff); + if (err < 0) { + dev_err(&c->dev, + "failed to read block data at 0x%02x, error %d\n", + MMA8450_OUT_X_LSB, err); + return err; + } + + *x = ((buff[1] << 4) & 0xff0) | (buff[0] & 0xf); + *y = ((buff[3] << 4) & 0xff0) | (buff[2] & 0xf); + *z = ((buff[5] << 4) & 0xff0) | (buff[4] & 0xf); + + return 0; +} + +static void mma8450_poll(struct input_polled_dev *dev) +{ + struct mma8450 *m = dev->private; + int x, y, z; + int ret; + int err; + + ret = mma8450_read(m, MMA8450_STATUS); + if (ret < 0) + return; + + if (!(ret & MMA8450_STATUS_ZXYDR)) + return; + + err = mma8450_read_xyz(m, &x, &y, &z); + if (err) + return; + + input_report_abs(dev->input, ABS_X, x); + input_report_abs(dev->input, ABS_Y, y); + input_report_abs(dev->input, ABS_Z, z); + input_sync(dev->input); +} + +/* Initialize the MMA8450 chip */ +static void mma8450_open(struct input_polled_dev *dev) +{ + struct mma8450 *m = dev->private; + int err; + + /* enable all events from X/Y/Z, no FIFO */ + err = mma8450_write(m, MMA8450_XYZ_DATA_CFG, 0x07); + if (err) + return; + + /* + * Sleep mode poll rate - 50Hz + * System output data rate - 400Hz + * Full scale selection - Active, +/- 2G + */ + err = mma8450_write(m, MMA8450_CTRL_REG1, 0x01); + if (err < 0) + return; + + msleep(MODE_CHANGE_DELAY_MS); +} + +static void mma8450_close(struct input_polled_dev *dev) +{ + struct mma8450 *m = dev->private; + + mma8450_write(m, MMA8450_CTRL_REG1, 0x00); + mma8450_write(m, MMA8450_CTRL_REG2, 0x01); +} + +/* + * I2C init/probing/exit functions + */ +static int __devinit mma8450_probe(struct i2c_client *c, + const struct i2c_device_id *id) +{ + struct input_polled_dev *idev; + struct mma8450 *m; + int err; + + m = kzalloc(sizeof(struct mma8450), GFP_KERNEL); + idev = input_allocate_polled_device(); + if (!m || !idev) { + err = -ENOMEM; + goto err_free_mem; + } + + m->client = c; + m->idev = idev; + + idev->private = m; + idev->input->name = MMA8450_DRV_NAME; + idev->input->id.bustype = BUS_I2C; + idev->poll = mma8450_poll; + idev->poll_interval = POLL_INTERVAL; + idev->poll_interval_max = POLL_INTERVAL_MAX; + idev->open = mma8450_open; + idev->close = mma8450_close; + + __set_bit(EV_ABS, idev->input->evbit); + input_set_abs_params(idev->input, ABS_X, -2048, 2047, 32, 32); + input_set_abs_params(idev->input, ABS_Y, -2048, 2047, 32, 32); + input_set_abs_params(idev->input, ABS_Z, -2048, 2047, 32, 32); + + err = input_register_polled_device(idev); + if (err) { + dev_err(&c->dev, "failed to register polled input device\n"); + goto err_free_mem; + } + + return 0; + +err_free_mem: + input_free_polled_device(idev); + kfree(m); + return err; +} + +static int __devexit mma8450_remove(struct i2c_client *c) +{ + struct mma8450 *m = i2c_get_clientdata(c); + struct input_polled_dev *idev = m->idev; + + input_unregister_polled_device(idev); + input_free_polled_device(idev); + kfree(m); + + return 0; +} + +static const struct i2c_device_id mma8450_id[] = { + { MMA8450_DRV_NAME, 0 }, + { }, +}; +MODULE_DEVICE_TABLE(i2c, mma8450_id); + +static struct i2c_driver mma8450_driver = { + .driver = { + .name = MMA8450_DRV_NAME, + .owner = THIS_MODULE, + }, + .probe = mma8450_probe, + .remove = __devexit_p(mma8450_remove), + .id_table = mma8450_id, +}; + +static int __init mma8450_init(void) +{ + return i2c_add_driver(&mma8450_driver); +} +module_init(mma8450_init); + +static void __exit mma8450_exit(void) +{ + i2c_del_driver(&mma8450_driver); +} +module_exit(mma8450_exit); + +MODULE_AUTHOR("Freescale Semiconductor, Inc."); +MODULE_DESCRIPTION("MMA8450 3-Axis Accelerometer Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/input/misc/mpu3050.c b/drivers/input/misc/mpu3050.c new file mode 100644 index 0000000..b95fac1 --- /dev/null +++ b/drivers/input/misc/mpu3050.c @@ -0,0 +1,376 @@ +/* + * MPU3050 Tri-axis gyroscope driver + * + * Copyright (C) 2011 Wistron Co.Ltd + * Joseph Lai <joseph_lai@wistron.com> + * + * Trimmed down by Alan Cox <alan@linux.intel.com> to produce this version + * + * This is a 'lite' version of the driver, while we consider the right way + * to present the other features to user space. In particular it requires the + * device has an IRQ, and it only provides an input interface, so is not much + * use for device orientation. A fuller version is available from the Meego + * tree. + * + * This program is based on bma023.c. + * + * 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; version 2 of the License. + * + * 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., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + * + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/mutex.h> +#include <linux/err.h> +#include <linux/i2c.h> +#include <linux/input.h> +#include <linux/delay.h> +#include <linux/slab.h> +#include <linux/pm_runtime.h> + +#define MPU3050_CHIP_ID_REG 0x00 +#define MPU3050_CHIP_ID 0x69 +#define MPU3050_XOUT_H 0x1D +#define MPU3050_PWR_MGM 0x3E +#define MPU3050_PWR_MGM_POS 6 +#define MPU3050_PWR_MGM_MASK 0x40 + +#define MPU3050_AUTO_DELAY 1000 + +#define MPU3050_MIN_VALUE -32768 +#define MPU3050_MAX_VALUE 32767 + +struct axis_data { + s16 x; + s16 y; + s16 z; +}; + +struct mpu3050_sensor { + struct i2c_client *client; + struct device *dev; + struct input_dev *idev; +}; + +/** + * mpu3050_xyz_read_reg - read the axes values + * @buffer: provide register addr and get register + * @length: length of register + * + * Reads the register values in one transaction or returns a negative + * error code on failure. + */ +static int mpu3050_xyz_read_reg(struct i2c_client *client, + u8 *buffer, int length) +{ + /* + * Annoying we can't make this const because the i2c layer doesn't + * declare input buffers const. + */ + char cmd = MPU3050_XOUT_H; + struct i2c_msg msg[] = { + { + .addr = client->addr, + .flags = 0, + .len = 1, + .buf = &cmd, + }, + { + .addr = client->addr, + .flags = I2C_M_RD, + .len = length, + .buf = buffer, + }, + }; + + return i2c_transfer(client->adapter, msg, 2); +} + +/** + * mpu3050_read_xyz - get co-ordinates from device + * @client: i2c address of sensor + * @coords: co-ordinates to update + * + * Return the converted X Y and Z co-ordinates from the sensor device + */ +static void mpu3050_read_xyz(struct i2c_client *client, + struct axis_data *coords) +{ + u16 buffer[3]; + + mpu3050_xyz_read_reg(client, (u8 *)buffer, 6); + coords->x = be16_to_cpu(buffer[0]); + coords->y = be16_to_cpu(buffer[1]); + coords->z = be16_to_cpu(buffer[2]); + dev_dbg(&client->dev, "%s: x %d, y %d, z %d\n", __func__, + coords->x, coords->y, coords->z); +} + +/** + * mpu3050_set_power_mode - set the power mode + * @client: i2c client for the sensor + * @val: value to switch on/off of power, 1: normal power, 0: low power + * + * Put device to normal-power mode or low-power mode. + */ +static void mpu3050_set_power_mode(struct i2c_client *client, u8 val) +{ + u8 value; + + value = i2c_smbus_read_byte_data(client, MPU3050_PWR_MGM); + value = (value & ~MPU3050_PWR_MGM_MASK) | + (((val << MPU3050_PWR_MGM_POS) & MPU3050_PWR_MGM_MASK) ^ + MPU3050_PWR_MGM_MASK); + i2c_smbus_write_byte_data(client, MPU3050_PWR_MGM, value); +} + +/** + * mpu3050_input_open - called on input event open + * @input: input dev of opened device + * + * The input layer calls this function when input event is opened. The + * function will push the device to resume. Then, the device is ready + * to provide data. + */ +static int mpu3050_input_open(struct input_dev *input) +{ + struct mpu3050_sensor *sensor = input_get_drvdata(input); + + pm_runtime_get(sensor->dev); + + return 0; +} + +/** + * mpu3050_input_close - called on input event close + * @input: input dev of closed device + * + * The input layer calls this function when input event is closed. The + * function will push the device to suspend. + */ +static void mpu3050_input_close(struct input_dev *input) +{ + struct mpu3050_sensor *sensor = input_get_drvdata(input); + + pm_runtime_put(sensor->dev); +} + +/** + * mpu3050_interrupt_thread - handle an IRQ + * @irq: interrupt numner + * @data: the sensor + * + * Called by the kernel single threaded after an interrupt occurs. Read + * the sensor data and generate an input event for it. + */ +static irqreturn_t mpu3050_interrupt_thread(int irq, void *data) +{ + struct mpu3050_sensor *sensor = data; + struct axis_data axis; + + mpu3050_read_xyz(sensor->client, &axis); + + input_report_abs(sensor->idev, ABS_X, axis.x); + input_report_abs(sensor->idev, ABS_Y, axis.y); + input_report_abs(sensor->idev, ABS_Z, axis.z); + input_sync(sensor->idev); + + return IRQ_HANDLED; +} + +/** + * mpu3050_probe - device detection callback + * @client: i2c client of found device + * @id: id match information + * + * The I2C layer calls us when it believes a sensor is present at this + * address. Probe to see if this is correct and to validate the device. + * + * If present install the relevant sysfs interfaces and input device. + */ +static int __devinit mpu3050_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct mpu3050_sensor *sensor; + struct input_dev *idev; + int ret; + int error; + + sensor = kzalloc(sizeof(struct mpu3050_sensor), GFP_KERNEL); + idev = input_allocate_device(); + if (!sensor || !idev) { + dev_err(&client->dev, "failed to allocate driver data\n"); + error = -ENOMEM; + goto err_free_mem; + } + + sensor->client = client; + sensor->dev = &client->dev; + sensor->idev = idev; + + mpu3050_set_power_mode(client, 1); + msleep(10); + + ret = i2c_smbus_read_byte_data(client, MPU3050_CHIP_ID_REG); + if (ret < 0) { + dev_err(&client->dev, "failed to detect device\n"); + error = -ENXIO; + goto err_free_mem; + } + + if (ret != MPU3050_CHIP_ID) { + dev_err(&client->dev, "unsupported chip id\n"); + error = -ENXIO; + goto err_free_mem; + } + + idev->name = "MPU3050"; + idev->id.bustype = BUS_I2C; + idev->dev.parent = &client->dev; + + idev->open = mpu3050_input_open; + idev->close = mpu3050_input_close; + + __set_bit(EV_ABS, idev->evbit); + input_set_abs_params(idev, ABS_X, + MPU3050_MIN_VALUE, MPU3050_MAX_VALUE, 0, 0); + input_set_abs_params(idev, ABS_Y, + MPU3050_MIN_VALUE, MPU3050_MAX_VALUE, 0, 0); + input_set_abs_params(idev, ABS_Z, + MPU3050_MIN_VALUE, MPU3050_MAX_VALUE, 0, 0); + + input_set_drvdata(idev, sensor); + + pm_runtime_set_active(&client->dev); + + error = request_threaded_irq(client->irq, + NULL, mpu3050_interrupt_thread, + IRQF_TRIGGER_RISING, + "mpu_int", sensor); + if (error) { + dev_err(&client->dev, + "can't get IRQ %d, error %d\n", client->irq, error); + goto err_pm_set_suspended; + } + + error = input_register_device(idev); + if (error) { + dev_err(&client->dev, "failed to register input device\n"); + goto err_free_irq; + } + + pm_runtime_enable(&client->dev); + pm_runtime_set_autosuspend_delay(&client->dev, MPU3050_AUTO_DELAY); + + return 0; + +err_free_irq: + free_irq(client->irq, sensor); +err_pm_set_suspended: + pm_runtime_set_suspended(&client->dev); +err_free_mem: + input_unregister_device(idev); + kfree(sensor); + return error; +} + +/** + * mpu3050_remove - remove a sensor + * @client: i2c client of sensor being removed + * + * Our sensor is going away, clean up the resources. + */ +static int __devexit mpu3050_remove(struct i2c_client *client) +{ + struct mpu3050_sensor *sensor = i2c_get_clientdata(client); + + pm_runtime_disable(&client->dev); + pm_runtime_set_suspended(&client->dev); + + free_irq(client->irq, sensor); + input_unregister_device(sensor->idev); + kfree(sensor); + + return 0; +} + +#ifdef CONFIG_PM +/** + * mpu3050_suspend - called on device suspend + * @dev: device being suspended + * + * Put the device into sleep mode before we suspend the machine. + */ +static int mpu3050_suspend(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + + mpu3050_set_power_mode(client, 0); + + return 0; +} + +/** + * mpu3050_resume - called on device resume + * @dev: device being resumed + * + * Put the device into powered mode on resume. + */ +static int mpu3050_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + + mpu3050_set_power_mode(client, 1); + msleep(100); /* wait for gyro chip resume */ + + return 0; +} +#endif + +static UNIVERSAL_DEV_PM_OPS(mpu3050_pm, mpu3050_suspend, mpu3050_resume, NULL); + +static const struct i2c_device_id mpu3050_ids[] = { + { "mpu3050", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, mpu3050_ids); + +static struct i2c_driver mpu3050_i2c_driver = { + .driver = { + .name = "mpu3050", + .owner = THIS_MODULE, + .pm = &mpu3050_pm, + }, + .probe = mpu3050_probe, + .remove = __devexit_p(mpu3050_remove), + .id_table = mpu3050_ids, +}; + +static int __init mpu3050_init(void) +{ + return i2c_add_driver(&mpu3050_i2c_driver); +} +module_init(mpu3050_init); + +static void __exit mpu3050_exit(void) +{ + i2c_del_driver(&mpu3050_i2c_driver); +} +module_exit(mpu3050_exit); + +MODULE_AUTHOR("Wistron Corp."); +MODULE_DESCRIPTION("MPU3050 Tri-axis gyroscope driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/input/misc/xen-kbdfront.c b/drivers/input/misc/xen-kbdfront.c index 62bae99..ad2e51c 100644 --- a/drivers/input/misc/xen-kbdfront.c +++ b/drivers/input/misc/xen-kbdfront.c @@ -373,7 +373,7 @@ static struct xenbus_driver xenkbd_driver = { static int __init xenkbd_init(void) { - if (!xen_pv_domain()) + if (!xen_domain()) return -ENODEV; /* Nothing to do if running in dom0. */ |
