M: Stelian Pop <stelian@popies.net>
M: Michael Hanselmann <linux-kernel@hansmi.ch>
S: Supported
-F: drivers/hwmon/ams/
+F: drivers/macintosh/ams/
AMSO1100 RNIC DRIVER
M: Tom Tucker <tom@opengridcomputing.com>
This driver can also be built as a module. If so, the module
will be called k10temp.
-config SENSORS_AMS
- tristate "Apple Motion Sensor driver"
- depends on PPC_PMAC && !PPC64 && INPUT && ((ADB_PMU && I2C = y) || (ADB_PMU && !I2C) || I2C) && EXPERIMENTAL
- select INPUT_POLLDEV
- help
- Support for the motion sensor included in PowerBooks. Includes
- implementations for PMU and I2C.
-
- This driver can also be built as a module. If so, the module
- will be called ams.
-
-config SENSORS_AMS_PMU
- bool "PMU variant"
- depends on SENSORS_AMS && ADB_PMU
- default y
- help
- PMU variant of motion sensor, found in late 2005 PowerBooks.
-
-config SENSORS_AMS_I2C
- bool "I2C variant"
- depends on SENSORS_AMS && I2C
- default y
- help
- I2C variant of motion sensor, found in early 2005 PowerBooks and
- iBooks.
-
config SENSORS_ASB100
tristate "Asus ASB100 Bach"
depends on X86 && I2C && EXPERIMENTAL
obj-$(CONFIG_SENSORS_ADT7470) += adt7470.o
obj-$(CONFIG_SENSORS_ADT7475) += adt7475.o
obj-$(CONFIG_SENSORS_APPLESMC) += applesmc.o
-obj-$(CONFIG_SENSORS_AMS) += ams/
obj-$(CONFIG_SENSORS_ASC7621) += asc7621.o
obj-$(CONFIG_SENSORS_ATXP1) += atxp1.o
obj-$(CONFIG_SENSORS_CORETEMP) += coretemp.o
+++ /dev/null
-#
-# Makefile for Apple Motion Sensor driver
-#
-
-ams-y := ams-core.o ams-input.o
-ams-$(CONFIG_SENSORS_AMS_PMU) += ams-pmu.o
-ams-$(CONFIG_SENSORS_AMS_I2C) += ams-i2c.o
-obj-$(CONFIG_SENSORS_AMS) += ams.o
+++ /dev/null
-/*
- * Apple Motion Sensor driver
- *
- * Copyright (C) 2005 Stelian Pop (stelian@popies.net)
- * Copyright (C) 2006 Michael Hanselmann (linux-kernel@hansmi.ch)
- *
- * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/of_platform.h>
-#include <asm/pmac_pfunc.h>
-
-#include "ams.h"
-
-/* There is only one motion sensor per machine */
-struct ams ams_info;
-
-static unsigned int verbose;
-module_param(verbose, bool, 0644);
-MODULE_PARM_DESC(verbose, "Show free falls and shocks in kernel output");
-
-/* Call with ams_info.lock held! */
-void ams_sensors(s8 *x, s8 *y, s8 *z)
-{
- u32 orient = ams_info.vflag? ams_info.orient1 : ams_info.orient2;
-
- if (orient & 0x80)
- /* X and Y swapped */
- ams_info.get_xyz(y, x, z);
- else
- ams_info.get_xyz(x, y, z);
-
- if (orient & 0x04)
- *z = ~(*z);
- if (orient & 0x02)
- *y = ~(*y);
- if (orient & 0x01)
- *x = ~(*x);
-}
-
-static ssize_t ams_show_current(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- s8 x, y, z;
-
- mutex_lock(&ams_info.lock);
- ams_sensors(&x, &y, &z);
- mutex_unlock(&ams_info.lock);
-
- return snprintf(buf, PAGE_SIZE, "%d %d %d\n", x, y, z);
-}
-
-static DEVICE_ATTR(current, S_IRUGO, ams_show_current, NULL);
-
-static void ams_handle_irq(void *data)
-{
- enum ams_irq irq = *((enum ams_irq *)data);
-
- spin_lock(&ams_info.irq_lock);
-
- ams_info.worker_irqs |= irq;
- schedule_work(&ams_info.worker);
-
- spin_unlock(&ams_info.irq_lock);
-}
-
-static enum ams_irq ams_freefall_irq_data = AMS_IRQ_FREEFALL;
-static struct pmf_irq_client ams_freefall_client = {
- .owner = THIS_MODULE,
- .handler = ams_handle_irq,
- .data = &ams_freefall_irq_data,
-};
-
-static enum ams_irq ams_shock_irq_data = AMS_IRQ_SHOCK;
-static struct pmf_irq_client ams_shock_client = {
- .owner = THIS_MODULE,
- .handler = ams_handle_irq,
- .data = &ams_shock_irq_data,
-};
-
-/* Once hard disk parking is implemented in the kernel, this function can
- * trigger it.
- */
-static void ams_worker(struct work_struct *work)
-{
- unsigned long flags;
- u8 irqs_to_clear;
-
- mutex_lock(&ams_info.lock);
-
- spin_lock_irqsave(&ams_info.irq_lock, flags);
- irqs_to_clear = ams_info.worker_irqs;
-
- if (ams_info.worker_irqs & AMS_IRQ_FREEFALL) {
- if (verbose)
- printk(KERN_INFO "ams: freefall detected!\n");
-
- ams_info.worker_irqs &= ~AMS_IRQ_FREEFALL;
- }
-
- if (ams_info.worker_irqs & AMS_IRQ_SHOCK) {
- if (verbose)
- printk(KERN_INFO "ams: shock detected!\n");
-
- ams_info.worker_irqs &= ~AMS_IRQ_SHOCK;
- }
-
- spin_unlock_irqrestore(&ams_info.irq_lock, flags);
-
- ams_info.clear_irq(irqs_to_clear);
-
- mutex_unlock(&ams_info.lock);
-}
-
-/* Call with ams_info.lock held! */
-int ams_sensor_attach(void)
-{
- int result;
- const u32 *prop;
-
- /* Get orientation */
- prop = of_get_property(ams_info.of_node, "orientation", NULL);
- if (!prop)
- return -ENODEV;
- ams_info.orient1 = *prop;
- ams_info.orient2 = *(prop + 1);
-
- /* Register freefall interrupt handler */
- result = pmf_register_irq_client(ams_info.of_node,
- "accel-int-1",
- &ams_freefall_client);
- if (result < 0)
- return -ENODEV;
-
- /* Reset saved irqs */
- ams_info.worker_irqs = 0;
-
- /* Register shock interrupt handler */
- result = pmf_register_irq_client(ams_info.of_node,
- "accel-int-2",
- &ams_shock_client);
- if (result < 0)
- goto release_freefall;
-
- /* Create device */
- ams_info.of_dev = of_platform_device_create(ams_info.of_node, "ams", NULL);
- if (!ams_info.of_dev) {
- result = -ENODEV;
- goto release_shock;
- }
-
- /* Create attributes */
- result = device_create_file(&ams_info.of_dev->dev, &dev_attr_current);
- if (result)
- goto release_of;
-
- ams_info.vflag = !!(ams_info.get_vendor() & 0x10);
-
- /* Init input device */
- result = ams_input_init();
- if (result)
- goto release_device_file;
-
- return result;
-release_device_file:
- device_remove_file(&ams_info.of_dev->dev, &dev_attr_current);
-release_of:
- of_device_unregister(ams_info.of_dev);
-release_shock:
- pmf_unregister_irq_client(&ams_shock_client);
-release_freefall:
- pmf_unregister_irq_client(&ams_freefall_client);
- return result;
-}
-
-int __init ams_init(void)
-{
- struct device_node *np;
-
- spin_lock_init(&ams_info.irq_lock);
- mutex_init(&ams_info.lock);
- INIT_WORK(&ams_info.worker, ams_worker);
-
-#ifdef CONFIG_SENSORS_AMS_I2C
- np = of_find_node_by_name(NULL, "accelerometer");
- if (np && of_device_is_compatible(np, "AAPL,accelerometer_1"))
- /* Found I2C motion sensor */
- return ams_i2c_init(np);
-#endif
-
-#ifdef CONFIG_SENSORS_AMS_PMU
- np = of_find_node_by_name(NULL, "sms");
- if (np && of_device_is_compatible(np, "sms"))
- /* Found PMU motion sensor */
- return ams_pmu_init(np);
-#endif
- return -ENODEV;
-}
-
-void ams_sensor_detach(void)
-{
- /* Remove input device */
- ams_input_exit();
-
- /* Remove attributes */
- device_remove_file(&ams_info.of_dev->dev, &dev_attr_current);
-
- /* Flush interrupt worker
- *
- * We do this after ams_info.exit(), because an interrupt might
- * have arrived before disabling them.
- */
- flush_scheduled_work();
-
- /* Remove device */
- of_device_unregister(ams_info.of_dev);
-
- /* Remove handler */
- pmf_unregister_irq_client(&ams_shock_client);
- pmf_unregister_irq_client(&ams_freefall_client);
-}
-
-static void __exit ams_exit(void)
-{
- /* Shut down implementation */
- ams_info.exit();
-}
-
-MODULE_AUTHOR("Stelian Pop, Michael Hanselmann");
-MODULE_DESCRIPTION("Apple Motion Sensor driver");
-MODULE_LICENSE("GPL");
-
-module_init(ams_init);
-module_exit(ams_exit);
+++ /dev/null
-/*
- * Apple Motion Sensor driver (I2C variant)
- *
- * Copyright (C) 2005 Stelian Pop (stelian@popies.net)
- * Copyright (C) 2006 Michael Hanselmann (linux-kernel@hansmi.ch)
- *
- * Clean room implementation based on the reverse engineered Mac OS X driver by
- * Johannes Berg <johannes@sipsolutions.net>, documentation available at
- * http://johannes.sipsolutions.net/PowerBook/Apple_Motion_Sensor_Specification
- *
- * 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.
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-
-#include "ams.h"
-
-/* AMS registers */
-#define AMS_COMMAND 0x00 /* command register */
-#define AMS_STATUS 0x01 /* status register */
-#define AMS_CTRL1 0x02 /* read control 1 (number of values) */
-#define AMS_CTRL2 0x03 /* read control 2 (offset?) */
-#define AMS_CTRL3 0x04 /* read control 3 (size of each value?) */
-#define AMS_DATA1 0x05 /* read data 1 */
-#define AMS_DATA2 0x06 /* read data 2 */
-#define AMS_DATA3 0x07 /* read data 3 */
-#define AMS_DATA4 0x08 /* read data 4 */
-#define AMS_DATAX 0x20 /* data X */
-#define AMS_DATAY 0x21 /* data Y */
-#define AMS_DATAZ 0x22 /* data Z */
-#define AMS_FREEFALL 0x24 /* freefall int control */
-#define AMS_SHOCK 0x25 /* shock int control */
-#define AMS_SENSLOW 0x26 /* sensitivity low limit */
-#define AMS_SENSHIGH 0x27 /* sensitivity high limit */
-#define AMS_CTRLX 0x28 /* control X */
-#define AMS_CTRLY 0x29 /* control Y */
-#define AMS_CTRLZ 0x2A /* control Z */
-#define AMS_UNKNOWN1 0x2B /* unknown 1 */
-#define AMS_UNKNOWN2 0x2C /* unknown 2 */
-#define AMS_UNKNOWN3 0x2D /* unknown 3 */
-#define AMS_VENDOR 0x2E /* vendor */
-
-/* AMS commands - use with the AMS_COMMAND register */
-enum ams_i2c_cmd {
- AMS_CMD_NOOP = 0,
- AMS_CMD_VERSION,
- AMS_CMD_READMEM,
- AMS_CMD_WRITEMEM,
- AMS_CMD_ERASEMEM,
- AMS_CMD_READEE,
- AMS_CMD_WRITEEE,
- AMS_CMD_RESET,
- AMS_CMD_START,
-};
-
-static int ams_i2c_probe(struct i2c_client *client,
- const struct i2c_device_id *id);
-static int ams_i2c_remove(struct i2c_client *client);
-
-static const struct i2c_device_id ams_id[] = {
- { "ams", 0 },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, ams_id);
-
-static struct i2c_driver ams_i2c_driver = {
- .driver = {
- .name = "ams",
- .owner = THIS_MODULE,
- },
- .probe = ams_i2c_probe,
- .remove = ams_i2c_remove,
- .id_table = ams_id,
-};
-
-static s32 ams_i2c_read(u8 reg)
-{
- return i2c_smbus_read_byte_data(ams_info.i2c_client, reg);
-}
-
-static int ams_i2c_write(u8 reg, u8 value)
-{
- return i2c_smbus_write_byte_data(ams_info.i2c_client, reg, value);
-}
-
-static int ams_i2c_cmd(enum ams_i2c_cmd cmd)
-{
- s32 result;
- int count = 3;
-
- ams_i2c_write(AMS_COMMAND, cmd);
- msleep(5);
-
- while (count--) {
- result = ams_i2c_read(AMS_COMMAND);
- if (result == 0 || result & 0x80)
- return 0;
-
- schedule_timeout_uninterruptible(HZ / 20);
- }
-
- return -1;
-}
-
-static void ams_i2c_set_irq(enum ams_irq reg, char enable)
-{
- if (reg & AMS_IRQ_FREEFALL) {
- u8 val = ams_i2c_read(AMS_CTRLX);
- if (enable)
- val |= 0x80;
- else
- val &= ~0x80;
- ams_i2c_write(AMS_CTRLX, val);
- }
-
- if (reg & AMS_IRQ_SHOCK) {
- u8 val = ams_i2c_read(AMS_CTRLY);
- if (enable)
- val |= 0x80;
- else
- val &= ~0x80;
- ams_i2c_write(AMS_CTRLY, val);
- }
-
- if (reg & AMS_IRQ_GLOBAL) {
- u8 val = ams_i2c_read(AMS_CTRLZ);
- if (enable)
- val |= 0x80;
- else
- val &= ~0x80;
- ams_i2c_write(AMS_CTRLZ, val);
- }
-}
-
-static void ams_i2c_clear_irq(enum ams_irq reg)
-{
- if (reg & AMS_IRQ_FREEFALL)
- ams_i2c_write(AMS_FREEFALL, 0);
-
- if (reg & AMS_IRQ_SHOCK)
- ams_i2c_write(AMS_SHOCK, 0);
-}
-
-static u8 ams_i2c_get_vendor(void)
-{
- return ams_i2c_read(AMS_VENDOR);
-}
-
-static void ams_i2c_get_xyz(s8 *x, s8 *y, s8 *z)
-{
- *x = ams_i2c_read(AMS_DATAX);
- *y = ams_i2c_read(AMS_DATAY);
- *z = ams_i2c_read(AMS_DATAZ);
-}
-
-static int ams_i2c_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- int vmaj, vmin;
- int result;
-
- /* There can be only one */
- if (unlikely(ams_info.has_device))
- return -ENODEV;
-
- ams_info.i2c_client = client;
-
- if (ams_i2c_cmd(AMS_CMD_RESET)) {
- printk(KERN_INFO "ams: Failed to reset the device\n");
- return -ENODEV;
- }
-
- if (ams_i2c_cmd(AMS_CMD_START)) {
- printk(KERN_INFO "ams: Failed to start the device\n");
- return -ENODEV;
- }
-
- /* get version/vendor information */
- ams_i2c_write(AMS_CTRL1, 0x02);
- ams_i2c_write(AMS_CTRL2, 0x85);
- ams_i2c_write(AMS_CTRL3, 0x01);
-
- ams_i2c_cmd(AMS_CMD_READMEM);
-
- vmaj = ams_i2c_read(AMS_DATA1);
- vmin = ams_i2c_read(AMS_DATA2);
- if (vmaj != 1 || vmin != 52) {
- printk(KERN_INFO "ams: Incorrect device version (%d.%d)\n",
- vmaj, vmin);
- return -ENODEV;
- }
-
- ams_i2c_cmd(AMS_CMD_VERSION);
-
- vmaj = ams_i2c_read(AMS_DATA1);
- vmin = ams_i2c_read(AMS_DATA2);
- if (vmaj != 0 || vmin != 1) {
- printk(KERN_INFO "ams: Incorrect firmware version (%d.%d)\n",
- vmaj, vmin);
- return -ENODEV;
- }
-
- /* Disable interrupts */
- ams_i2c_set_irq(AMS_IRQ_ALL, 0);
-
- result = ams_sensor_attach();
- if (result < 0)
- return result;
-
- /* Set default values */
- ams_i2c_write(AMS_SENSLOW, 0x15);
- ams_i2c_write(AMS_SENSHIGH, 0x60);
- ams_i2c_write(AMS_CTRLX, 0x08);
- ams_i2c_write(AMS_CTRLY, 0x0F);
- ams_i2c_write(AMS_CTRLZ, 0x4F);
- ams_i2c_write(AMS_UNKNOWN1, 0x14);
-
- /* Clear interrupts */
- ams_i2c_clear_irq(AMS_IRQ_ALL);
-
- ams_info.has_device = 1;
-
- /* Enable interrupts */
- ams_i2c_set_irq(AMS_IRQ_ALL, 1);
-
- printk(KERN_INFO "ams: Found I2C based motion sensor\n");
-
- return 0;
-}
-
-static int ams_i2c_remove(struct i2c_client *client)
-{
- if (ams_info.has_device) {
- ams_sensor_detach();
-
- /* Disable interrupts */
- ams_i2c_set_irq(AMS_IRQ_ALL, 0);
-
- /* Clear interrupts */
- ams_i2c_clear_irq(AMS_IRQ_ALL);
-
- printk(KERN_INFO "ams: Unloading\n");
-
- ams_info.has_device = 0;
- }
-
- return 0;
-}
-
-static void ams_i2c_exit(void)
-{
- i2c_del_driver(&ams_i2c_driver);
-}
-
-int __init ams_i2c_init(struct device_node *np)
-{
- int result;
-
- /* Set implementation stuff */
- ams_info.of_node = np;
- ams_info.exit = ams_i2c_exit;
- ams_info.get_vendor = ams_i2c_get_vendor;
- ams_info.get_xyz = ams_i2c_get_xyz;
- ams_info.clear_irq = ams_i2c_clear_irq;
- ams_info.bustype = BUS_I2C;
-
- result = i2c_add_driver(&ams_i2c_driver);
-
- return result;
-}
+++ /dev/null
-/*
- * Apple Motion Sensor driver (joystick emulation)
- *
- * Copyright (C) 2005 Stelian Pop (stelian@popies.net)
- * Copyright (C) 2006 Michael Hanselmann (linux-kernel@hansmi.ch)
- *
- * 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.
- */
-
-#include <linux/module.h>
-
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-
-#include "ams.h"
-
-static unsigned int joystick;
-module_param(joystick, bool, S_IRUGO);
-MODULE_PARM_DESC(joystick, "Enable the input class device on module load");
-
-static unsigned int invert;
-module_param(invert, bool, S_IWUSR | S_IRUGO);
-MODULE_PARM_DESC(invert, "Invert input data on X and Y axis");
-
-static DEFINE_MUTEX(ams_input_mutex);
-
-static void ams_idev_poll(struct input_polled_dev *dev)
-{
- struct input_dev *idev = dev->input;
- s8 x, y, z;
-
- mutex_lock(&ams_info.lock);
-
- ams_sensors(&x, &y, &z);
-
- x -= ams_info.xcalib;
- y -= ams_info.ycalib;
- z -= ams_info.zcalib;
-
- input_report_abs(idev, ABS_X, invert ? -x : x);
- input_report_abs(idev, ABS_Y, invert ? -y : y);
- input_report_abs(idev, ABS_Z, z);
-
- input_sync(idev);
-
- mutex_unlock(&ams_info.lock);
-}
-
-/* Call with ams_info.lock held! */
-static int ams_input_enable(void)
-{
- struct input_dev *input;
- s8 x, y, z;
- int error;
-
- ams_sensors(&x, &y, &z);
- ams_info.xcalib = x;
- ams_info.ycalib = y;
- ams_info.zcalib = z;
-
- ams_info.idev = input_allocate_polled_device();
- if (!ams_info.idev)
- return -ENOMEM;
-
- ams_info.idev->poll = ams_idev_poll;
- ams_info.idev->poll_interval = 25;
-
- input = ams_info.idev->input;
- input->name = "Apple Motion Sensor";
- input->id.bustype = ams_info.bustype;
- input->id.vendor = 0;
- input->dev.parent = &ams_info.of_dev->dev;
-
- input_set_abs_params(input, ABS_X, -50, 50, 3, 0);
- input_set_abs_params(input, ABS_Y, -50, 50, 3, 0);
- input_set_abs_params(input, ABS_Z, -50, 50, 3, 0);
-
- set_bit(EV_ABS, input->evbit);
- set_bit(EV_KEY, input->evbit);
- set_bit(BTN_TOUCH, input->keybit);
-
- error = input_register_polled_device(ams_info.idev);
- if (error) {
- input_free_polled_device(ams_info.idev);
- ams_info.idev = NULL;
- return error;
- }
-
- joystick = 1;
-
- return 0;
-}
-
-static void ams_input_disable(void)
-{
- if (ams_info.idev) {
- input_unregister_polled_device(ams_info.idev);
- input_free_polled_device(ams_info.idev);
- ams_info.idev = NULL;
- }
-
- joystick = 0;
-}
-
-static ssize_t ams_input_show_joystick(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- return sprintf(buf, "%d\n", joystick);
-}
-
-static ssize_t ams_input_store_joystick(struct device *dev,
- struct device_attribute *attr, const char *buf, size_t count)
-{
- unsigned long enable;
- int error = 0;
-
- if (strict_strtoul(buf, 0, &enable) || enable > 1)
- return -EINVAL;
-
- mutex_lock(&ams_input_mutex);
-
- if (enable != joystick) {
- if (enable)
- error = ams_input_enable();
- else
- ams_input_disable();
- }
-
- mutex_unlock(&ams_input_mutex);
-
- return error ? error : count;
-}
-
-static DEVICE_ATTR(joystick, S_IRUGO | S_IWUSR,
- ams_input_show_joystick, ams_input_store_joystick);
-
-int ams_input_init(void)
-{
- if (joystick)
- ams_input_enable();
-
- return device_create_file(&ams_info.of_dev->dev, &dev_attr_joystick);
-}
-
-void ams_input_exit(void)
-{
- device_remove_file(&ams_info.of_dev->dev, &dev_attr_joystick);
-
- mutex_lock(&ams_input_mutex);
- ams_input_disable();
- mutex_unlock(&ams_input_mutex);
-}
+++ /dev/null
-/*
- * Apple Motion Sensor driver (PMU variant)
- *
- * Copyright (C) 2006 Michael Hanselmann (linux-kernel@hansmi.ch)
- *
- * 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.
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/adb.h>
-#include <linux/pmu.h>
-
-#include "ams.h"
-
-/* Attitude */
-#define AMS_X 0x00
-#define AMS_Y 0x01
-#define AMS_Z 0x02
-
-/* Not exactly known, maybe chip vendor */
-#define AMS_VENDOR 0x03
-
-/* Freefall registers */
-#define AMS_FF_CLEAR 0x04
-#define AMS_FF_ENABLE 0x05
-#define AMS_FF_LOW_LIMIT 0x06
-#define AMS_FF_DEBOUNCE 0x07
-
-/* Shock registers */
-#define AMS_SHOCK_CLEAR 0x08
-#define AMS_SHOCK_ENABLE 0x09
-#define AMS_SHOCK_HIGH_LIMIT 0x0a
-#define AMS_SHOCK_DEBOUNCE 0x0b
-
-/* Global interrupt and power control register */
-#define AMS_CONTROL 0x0c
-
-static u8 ams_pmu_cmd;
-
-static void ams_pmu_req_complete(struct adb_request *req)
-{
- complete((struct completion *)req->arg);
-}
-
-/* Only call this function from task context */
-static void ams_pmu_set_register(u8 reg, u8 value)
-{
- static struct adb_request req;
- DECLARE_COMPLETION(req_complete);
-
- req.arg = &req_complete;
- if (pmu_request(&req, ams_pmu_req_complete, 4, ams_pmu_cmd, 0x00, reg, value))
- return;
-
- wait_for_completion(&req_complete);
-}
-
-/* Only call this function from task context */
-static u8 ams_pmu_get_register(u8 reg)
-{
- static struct adb_request req;
- DECLARE_COMPLETION(req_complete);
-
- req.arg = &req_complete;
- if (pmu_request(&req, ams_pmu_req_complete, 3, ams_pmu_cmd, 0x01, reg))
- return 0;
-
- wait_for_completion(&req_complete);
-
- if (req.reply_len > 0)
- return req.reply[0];
- else
- return 0;
-}
-
-/* Enables or disables the specified interrupts */
-static void ams_pmu_set_irq(enum ams_irq reg, char enable)
-{
- if (reg & AMS_IRQ_FREEFALL) {
- u8 val = ams_pmu_get_register(AMS_FF_ENABLE);
- if (enable)
- val |= 0x80;
- else
- val &= ~0x80;
- ams_pmu_set_register(AMS_FF_ENABLE, val);
- }
-
- if (reg & AMS_IRQ_SHOCK) {
- u8 val = ams_pmu_get_register(AMS_SHOCK_ENABLE);
- if (enable)
- val |= 0x80;
- else
- val &= ~0x80;
- ams_pmu_set_register(AMS_SHOCK_ENABLE, val);
- }
-
- if (reg & AMS_IRQ_GLOBAL) {
- u8 val = ams_pmu_get_register(AMS_CONTROL);
- if (enable)
- val |= 0x80;
- else
- val &= ~0x80;
- ams_pmu_set_register(AMS_CONTROL, val);
- }
-}
-
-static void ams_pmu_clear_irq(enum ams_irq reg)
-{
- if (reg & AMS_IRQ_FREEFALL)
- ams_pmu_set_register(AMS_FF_CLEAR, 0x00);
-
- if (reg & AMS_IRQ_SHOCK)
- ams_pmu_set_register(AMS_SHOCK_CLEAR, 0x00);
-}
-
-static u8 ams_pmu_get_vendor(void)
-{
- return ams_pmu_get_register(AMS_VENDOR);
-}
-
-static void ams_pmu_get_xyz(s8 *x, s8 *y, s8 *z)
-{
- *x = ams_pmu_get_register(AMS_X);
- *y = ams_pmu_get_register(AMS_Y);
- *z = ams_pmu_get_register(AMS_Z);
-}
-
-static void ams_pmu_exit(void)
-{
- ams_sensor_detach();
-
- /* Disable interrupts */
- ams_pmu_set_irq(AMS_IRQ_ALL, 0);
-
- /* Clear interrupts */
- ams_pmu_clear_irq(AMS_IRQ_ALL);
-
- ams_info.has_device = 0;
-
- printk(KERN_INFO "ams: Unloading\n");
-}
-
-int __init ams_pmu_init(struct device_node *np)
-{
- const u32 *prop;
- int result;
-
- /* Set implementation stuff */
- ams_info.of_node = np;
- ams_info.exit = ams_pmu_exit;
- ams_info.get_vendor = ams_pmu_get_vendor;
- ams_info.get_xyz = ams_pmu_get_xyz;
- ams_info.clear_irq = ams_pmu_clear_irq;
- ams_info.bustype = BUS_HOST;
-
- /* Get PMU command, should be 0x4e, but we can never know */
- prop = of_get_property(ams_info.of_node, "reg", NULL);
- if (!prop)
- return -ENODEV;
-
- ams_pmu_cmd = ((*prop) >> 8) & 0xff;
-
- /* Disable interrupts */
- ams_pmu_set_irq(AMS_IRQ_ALL, 0);
-
- /* Clear interrupts */
- ams_pmu_clear_irq(AMS_IRQ_ALL);
-
- result = ams_sensor_attach();
- if (result < 0)
- return result;
-
- /* Set default values */
- ams_pmu_set_register(AMS_FF_LOW_LIMIT, 0x15);
- ams_pmu_set_register(AMS_FF_ENABLE, 0x08);
- ams_pmu_set_register(AMS_FF_DEBOUNCE, 0x14);
-
- ams_pmu_set_register(AMS_SHOCK_HIGH_LIMIT, 0x60);
- ams_pmu_set_register(AMS_SHOCK_ENABLE, 0x0f);
- ams_pmu_set_register(AMS_SHOCK_DEBOUNCE, 0x14);
-
- ams_pmu_set_register(AMS_CONTROL, 0x4f);
-
- /* Clear interrupts */
- ams_pmu_clear_irq(AMS_IRQ_ALL);
-
- ams_info.has_device = 1;
-
- /* Enable interrupts */
- ams_pmu_set_irq(AMS_IRQ_ALL, 1);
-
- printk(KERN_INFO "ams: Found PMU based motion sensor\n");
-
- return 0;
-}
+++ /dev/null
-#include <linux/i2c.h>
-#include <linux/input-polldev.h>
-#include <linux/kthread.h>
-#include <linux/mutex.h>
-#include <linux/spinlock.h>
-#include <linux/types.h>
-#include <linux/of_device.h>
-
-enum ams_irq {
- AMS_IRQ_FREEFALL = 0x01,
- AMS_IRQ_SHOCK = 0x02,
- AMS_IRQ_GLOBAL = 0x04,
- AMS_IRQ_ALL =
- AMS_IRQ_FREEFALL |
- AMS_IRQ_SHOCK |
- AMS_IRQ_GLOBAL,
-};
-
-struct ams {
- /* Locks */
- spinlock_t irq_lock;
- struct mutex lock;
-
- /* General properties */
- struct device_node *of_node;
- struct platform_device *of_dev;
- char has_device;
- char vflag;
- u32 orient1;
- u32 orient2;
-
- /* Interrupt worker */
- struct work_struct worker;
- u8 worker_irqs;
-
- /* Implementation
- *
- * Only call these functions with the main lock held.
- */
- void (*exit)(void);
-
- void (*get_xyz)(s8 *x, s8 *y, s8 *z);
- u8 (*get_vendor)(void);
-
- void (*clear_irq)(enum ams_irq reg);
-
-#ifdef CONFIG_SENSORS_AMS_I2C
- /* I2C properties */
- struct i2c_client *i2c_client;
-#endif
-
- /* Joystick emulation */
- struct input_polled_dev *idev;
- __u16 bustype;
-
- /* calibrated null values */
- int xcalib, ycalib, zcalib;
-};
-
-extern struct ams ams_info;
-
-extern void ams_sensors(s8 *x, s8 *y, s8 *z);
-extern int ams_sensor_attach(void);
-extern void ams_sensor_detach(void);
-
-extern int ams_pmu_init(struct device_node *np);
-extern int ams_i2c_init(struct device_node *np);
-
-extern int ams_input_init(void);
-extern void ams_input_exit(void);
This driver provides some support to control the front panel
blue LEDs "vu-meter" of the XServer macs.
+config SENSORS_AMS
+ tristate "Apple Motion Sensor driver"
+ depends on PPC_PMAC && !PPC64 && INPUT && ((ADB_PMU && I2C = y) || (ADB_PMU && !I2C) || I2C) && EXPERIMENTAL
+ select INPUT_POLLDEV
+ help
+ Support for the motion sensor included in PowerBooks. Includes
+ implementations for PMU and I2C.
+
+ This driver can also be built as a module. If so, the module
+ will be called ams.
+
+config SENSORS_AMS_PMU
+ bool "PMU variant"
+ depends on SENSORS_AMS && ADB_PMU
+ default y
+ help
+ PMU variant of motion sensor, found in late 2005 PowerBooks.
+
+config SENSORS_AMS_I2C
+ bool "I2C variant"
+ depends on SENSORS_AMS && I2C
+ default y
+ help
+ I2C variant of motion sensor, found in early 2005 PowerBooks and
+ iBooks.
+
endif # MACINTOSH_DRIVERS
windfarm_max6690_sensor.o \
windfarm_lm75_sensor.o windfarm_pid.o
obj-$(CONFIG_PMAC_RACKMETER) += rack-meter.o
+
+obj-$(CONFIG_SENSORS_AMS) += ams/
--- /dev/null
+#
+# Makefile for Apple Motion Sensor driver
+#
+
+ams-y := ams-core.o ams-input.o
+ams-$(CONFIG_SENSORS_AMS_PMU) += ams-pmu.o
+ams-$(CONFIG_SENSORS_AMS_I2C) += ams-i2c.o
+obj-$(CONFIG_SENSORS_AMS) += ams.o
--- /dev/null
+/*
+ * Apple Motion Sensor driver
+ *
+ * Copyright (C) 2005 Stelian Pop (stelian@popies.net)
+ * Copyright (C) 2006 Michael Hanselmann (linux-kernel@hansmi.ch)
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/of_platform.h>
+#include <asm/pmac_pfunc.h>
+
+#include "ams.h"
+
+/* There is only one motion sensor per machine */
+struct ams ams_info;
+
+static unsigned int verbose;
+module_param(verbose, bool, 0644);
+MODULE_PARM_DESC(verbose, "Show free falls and shocks in kernel output");
+
+/* Call with ams_info.lock held! */
+void ams_sensors(s8 *x, s8 *y, s8 *z)
+{
+ u32 orient = ams_info.vflag? ams_info.orient1 : ams_info.orient2;
+
+ if (orient & 0x80)
+ /* X and Y swapped */
+ ams_info.get_xyz(y, x, z);
+ else
+ ams_info.get_xyz(x, y, z);
+
+ if (orient & 0x04)
+ *z = ~(*z);
+ if (orient & 0x02)
+ *y = ~(*y);
+ if (orient & 0x01)
+ *x = ~(*x);
+}
+
+static ssize_t ams_show_current(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ s8 x, y, z;
+
+ mutex_lock(&ams_info.lock);
+ ams_sensors(&x, &y, &z);
+ mutex_unlock(&ams_info.lock);
+
+ return snprintf(buf, PAGE_SIZE, "%d %d %d\n", x, y, z);
+}
+
+static DEVICE_ATTR(current, S_IRUGO, ams_show_current, NULL);
+
+static void ams_handle_irq(void *data)
+{
+ enum ams_irq irq = *((enum ams_irq *)data);
+
+ spin_lock(&ams_info.irq_lock);
+
+ ams_info.worker_irqs |= irq;
+ schedule_work(&ams_info.worker);
+
+ spin_unlock(&ams_info.irq_lock);
+}
+
+static enum ams_irq ams_freefall_irq_data = AMS_IRQ_FREEFALL;
+static struct pmf_irq_client ams_freefall_client = {
+ .owner = THIS_MODULE,
+ .handler = ams_handle_irq,
+ .data = &ams_freefall_irq_data,
+};
+
+static enum ams_irq ams_shock_irq_data = AMS_IRQ_SHOCK;
+static struct pmf_irq_client ams_shock_client = {
+ .owner = THIS_MODULE,
+ .handler = ams_handle_irq,
+ .data = &ams_shock_irq_data,
+};
+
+/* Once hard disk parking is implemented in the kernel, this function can
+ * trigger it.
+ */
+static void ams_worker(struct work_struct *work)
+{
+ unsigned long flags;
+ u8 irqs_to_clear;
+
+ mutex_lock(&ams_info.lock);
+
+ spin_lock_irqsave(&ams_info.irq_lock, flags);
+ irqs_to_clear = ams_info.worker_irqs;
+
+ if (ams_info.worker_irqs & AMS_IRQ_FREEFALL) {
+ if (verbose)
+ printk(KERN_INFO "ams: freefall detected!\n");
+
+ ams_info.worker_irqs &= ~AMS_IRQ_FREEFALL;
+ }
+
+ if (ams_info.worker_irqs & AMS_IRQ_SHOCK) {
+ if (verbose)
+ printk(KERN_INFO "ams: shock detected!\n");
+
+ ams_info.worker_irqs &= ~AMS_IRQ_SHOCK;
+ }
+
+ spin_unlock_irqrestore(&ams_info.irq_lock, flags);
+
+ ams_info.clear_irq(irqs_to_clear);
+
+ mutex_unlock(&ams_info.lock);
+}
+
+/* Call with ams_info.lock held! */
+int ams_sensor_attach(void)
+{
+ int result;
+ const u32 *prop;
+
+ /* Get orientation */
+ prop = of_get_property(ams_info.of_node, "orientation", NULL);
+ if (!prop)
+ return -ENODEV;
+ ams_info.orient1 = *prop;
+ ams_info.orient2 = *(prop + 1);
+
+ /* Register freefall interrupt handler */
+ result = pmf_register_irq_client(ams_info.of_node,
+ "accel-int-1",
+ &ams_freefall_client);
+ if (result < 0)
+ return -ENODEV;
+
+ /* Reset saved irqs */
+ ams_info.worker_irqs = 0;
+
+ /* Register shock interrupt handler */
+ result = pmf_register_irq_client(ams_info.of_node,
+ "accel-int-2",
+ &ams_shock_client);
+ if (result < 0)
+ goto release_freefall;
+
+ /* Create device */
+ ams_info.of_dev = of_platform_device_create(ams_info.of_node, "ams", NULL);
+ if (!ams_info.of_dev) {
+ result = -ENODEV;
+ goto release_shock;
+ }
+
+ /* Create attributes */
+ result = device_create_file(&ams_info.of_dev->dev, &dev_attr_current);
+ if (result)
+ goto release_of;
+
+ ams_info.vflag = !!(ams_info.get_vendor() & 0x10);
+
+ /* Init input device */
+ result = ams_input_init();
+ if (result)
+ goto release_device_file;
+
+ return result;
+release_device_file:
+ device_remove_file(&ams_info.of_dev->dev, &dev_attr_current);
+release_of:
+ of_device_unregister(ams_info.of_dev);
+release_shock:
+ pmf_unregister_irq_client(&ams_shock_client);
+release_freefall:
+ pmf_unregister_irq_client(&ams_freefall_client);
+ return result;
+}
+
+int __init ams_init(void)
+{
+ struct device_node *np;
+
+ spin_lock_init(&ams_info.irq_lock);
+ mutex_init(&ams_info.lock);
+ INIT_WORK(&ams_info.worker, ams_worker);
+
+#ifdef CONFIG_SENSORS_AMS_I2C
+ np = of_find_node_by_name(NULL, "accelerometer");
+ if (np && of_device_is_compatible(np, "AAPL,accelerometer_1"))
+ /* Found I2C motion sensor */
+ return ams_i2c_init(np);
+#endif
+
+#ifdef CONFIG_SENSORS_AMS_PMU
+ np = of_find_node_by_name(NULL, "sms");
+ if (np && of_device_is_compatible(np, "sms"))
+ /* Found PMU motion sensor */
+ return ams_pmu_init(np);
+#endif
+ return -ENODEV;
+}
+
+void ams_sensor_detach(void)
+{
+ /* Remove input device */
+ ams_input_exit();
+
+ /* Remove attributes */
+ device_remove_file(&ams_info.of_dev->dev, &dev_attr_current);
+
+ /* Flush interrupt worker
+ *
+ * We do this after ams_info.exit(), because an interrupt might
+ * have arrived before disabling them.
+ */
+ flush_scheduled_work();
+
+ /* Remove device */
+ of_device_unregister(ams_info.of_dev);
+
+ /* Remove handler */
+ pmf_unregister_irq_client(&ams_shock_client);
+ pmf_unregister_irq_client(&ams_freefall_client);
+}
+
+static void __exit ams_exit(void)
+{
+ /* Shut down implementation */
+ ams_info.exit();
+}
+
+MODULE_AUTHOR("Stelian Pop, Michael Hanselmann");
+MODULE_DESCRIPTION("Apple Motion Sensor driver");
+MODULE_LICENSE("GPL");
+
+module_init(ams_init);
+module_exit(ams_exit);
--- /dev/null
+/*
+ * Apple Motion Sensor driver (I2C variant)
+ *
+ * Copyright (C) 2005 Stelian Pop (stelian@popies.net)
+ * Copyright (C) 2006 Michael Hanselmann (linux-kernel@hansmi.ch)
+ *
+ * Clean room implementation based on the reverse engineered Mac OS X driver by
+ * Johannes Berg <johannes@sipsolutions.net>, documentation available at
+ * http://johannes.sipsolutions.net/PowerBook/Apple_Motion_Sensor_Specification
+ *
+ * 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.
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+
+#include "ams.h"
+
+/* AMS registers */
+#define AMS_COMMAND 0x00 /* command register */
+#define AMS_STATUS 0x01 /* status register */
+#define AMS_CTRL1 0x02 /* read control 1 (number of values) */
+#define AMS_CTRL2 0x03 /* read control 2 (offset?) */
+#define AMS_CTRL3 0x04 /* read control 3 (size of each value?) */
+#define AMS_DATA1 0x05 /* read data 1 */
+#define AMS_DATA2 0x06 /* read data 2 */
+#define AMS_DATA3 0x07 /* read data 3 */
+#define AMS_DATA4 0x08 /* read data 4 */
+#define AMS_DATAX 0x20 /* data X */
+#define AMS_DATAY 0x21 /* data Y */
+#define AMS_DATAZ 0x22 /* data Z */
+#define AMS_FREEFALL 0x24 /* freefall int control */
+#define AMS_SHOCK 0x25 /* shock int control */
+#define AMS_SENSLOW 0x26 /* sensitivity low limit */
+#define AMS_SENSHIGH 0x27 /* sensitivity high limit */
+#define AMS_CTRLX 0x28 /* control X */
+#define AMS_CTRLY 0x29 /* control Y */
+#define AMS_CTRLZ 0x2A /* control Z */
+#define AMS_UNKNOWN1 0x2B /* unknown 1 */
+#define AMS_UNKNOWN2 0x2C /* unknown 2 */
+#define AMS_UNKNOWN3 0x2D /* unknown 3 */
+#define AMS_VENDOR 0x2E /* vendor */
+
+/* AMS commands - use with the AMS_COMMAND register */
+enum ams_i2c_cmd {
+ AMS_CMD_NOOP = 0,
+ AMS_CMD_VERSION,
+ AMS_CMD_READMEM,
+ AMS_CMD_WRITEMEM,
+ AMS_CMD_ERASEMEM,
+ AMS_CMD_READEE,
+ AMS_CMD_WRITEEE,
+ AMS_CMD_RESET,
+ AMS_CMD_START,
+};
+
+static int ams_i2c_probe(struct i2c_client *client,
+ const struct i2c_device_id *id);
+static int ams_i2c_remove(struct i2c_client *client);
+
+static const struct i2c_device_id ams_id[] = {
+ { "ams", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, ams_id);
+
+static struct i2c_driver ams_i2c_driver = {
+ .driver = {
+ .name = "ams",
+ .owner = THIS_MODULE,
+ },
+ .probe = ams_i2c_probe,
+ .remove = ams_i2c_remove,
+ .id_table = ams_id,
+};
+
+static s32 ams_i2c_read(u8 reg)
+{
+ return i2c_smbus_read_byte_data(ams_info.i2c_client, reg);
+}
+
+static int ams_i2c_write(u8 reg, u8 value)
+{
+ return i2c_smbus_write_byte_data(ams_info.i2c_client, reg, value);
+}
+
+static int ams_i2c_cmd(enum ams_i2c_cmd cmd)
+{
+ s32 result;
+ int count = 3;
+
+ ams_i2c_write(AMS_COMMAND, cmd);
+ msleep(5);
+
+ while (count--) {
+ result = ams_i2c_read(AMS_COMMAND);
+ if (result == 0 || result & 0x80)
+ return 0;
+
+ schedule_timeout_uninterruptible(HZ / 20);
+ }
+
+ return -1;
+}
+
+static void ams_i2c_set_irq(enum ams_irq reg, char enable)
+{
+ if (reg & AMS_IRQ_FREEFALL) {
+ u8 val = ams_i2c_read(AMS_CTRLX);
+ if (enable)
+ val |= 0x80;
+ else
+ val &= ~0x80;
+ ams_i2c_write(AMS_CTRLX, val);
+ }
+
+ if (reg & AMS_IRQ_SHOCK) {
+ u8 val = ams_i2c_read(AMS_CTRLY);
+ if (enable)
+ val |= 0x80;
+ else
+ val &= ~0x80;
+ ams_i2c_write(AMS_CTRLY, val);
+ }
+
+ if (reg & AMS_IRQ_GLOBAL) {
+ u8 val = ams_i2c_read(AMS_CTRLZ);
+ if (enable)
+ val |= 0x80;
+ else
+ val &= ~0x80;
+ ams_i2c_write(AMS_CTRLZ, val);
+ }
+}
+
+static void ams_i2c_clear_irq(enum ams_irq reg)
+{
+ if (reg & AMS_IRQ_FREEFALL)
+ ams_i2c_write(AMS_FREEFALL, 0);
+
+ if (reg & AMS_IRQ_SHOCK)
+ ams_i2c_write(AMS_SHOCK, 0);
+}
+
+static u8 ams_i2c_get_vendor(void)
+{
+ return ams_i2c_read(AMS_VENDOR);
+}
+
+static void ams_i2c_get_xyz(s8 *x, s8 *y, s8 *z)
+{
+ *x = ams_i2c_read(AMS_DATAX);
+ *y = ams_i2c_read(AMS_DATAY);
+ *z = ams_i2c_read(AMS_DATAZ);
+}
+
+static int ams_i2c_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ int vmaj, vmin;
+ int result;
+
+ /* There can be only one */
+ if (unlikely(ams_info.has_device))
+ return -ENODEV;
+
+ ams_info.i2c_client = client;
+
+ if (ams_i2c_cmd(AMS_CMD_RESET)) {
+ printk(KERN_INFO "ams: Failed to reset the device\n");
+ return -ENODEV;
+ }
+
+ if (ams_i2c_cmd(AMS_CMD_START)) {
+ printk(KERN_INFO "ams: Failed to start the device\n");
+ return -ENODEV;
+ }
+
+ /* get version/vendor information */
+ ams_i2c_write(AMS_CTRL1, 0x02);
+ ams_i2c_write(AMS_CTRL2, 0x85);
+ ams_i2c_write(AMS_CTRL3, 0x01);
+
+ ams_i2c_cmd(AMS_CMD_READMEM);
+
+ vmaj = ams_i2c_read(AMS_DATA1);
+ vmin = ams_i2c_read(AMS_DATA2);
+ if (vmaj != 1 || vmin != 52) {
+ printk(KERN_INFO "ams: Incorrect device version (%d.%d)\n",
+ vmaj, vmin);
+ return -ENODEV;
+ }
+
+ ams_i2c_cmd(AMS_CMD_VERSION);
+
+ vmaj = ams_i2c_read(AMS_DATA1);
+ vmin = ams_i2c_read(AMS_DATA2);
+ if (vmaj != 0 || vmin != 1) {
+ printk(KERN_INFO "ams: Incorrect firmware version (%d.%d)\n",
+ vmaj, vmin);
+ return -ENODEV;
+ }
+
+ /* Disable interrupts */
+ ams_i2c_set_irq(AMS_IRQ_ALL, 0);
+
+ result = ams_sensor_attach();
+ if (result < 0)
+ return result;
+
+ /* Set default values */
+ ams_i2c_write(AMS_SENSLOW, 0x15);
+ ams_i2c_write(AMS_SENSHIGH, 0x60);
+ ams_i2c_write(AMS_CTRLX, 0x08);
+ ams_i2c_write(AMS_CTRLY, 0x0F);
+ ams_i2c_write(AMS_CTRLZ, 0x4F);
+ ams_i2c_write(AMS_UNKNOWN1, 0x14);
+
+ /* Clear interrupts */
+ ams_i2c_clear_irq(AMS_IRQ_ALL);
+
+ ams_info.has_device = 1;
+
+ /* Enable interrupts */
+ ams_i2c_set_irq(AMS_IRQ_ALL, 1);
+
+ printk(KERN_INFO "ams: Found I2C based motion sensor\n");
+
+ return 0;
+}
+
+static int ams_i2c_remove(struct i2c_client *client)
+{
+ if (ams_info.has_device) {
+ ams_sensor_detach();
+
+ /* Disable interrupts */
+ ams_i2c_set_irq(AMS_IRQ_ALL, 0);
+
+ /* Clear interrupts */
+ ams_i2c_clear_irq(AMS_IRQ_ALL);
+
+ printk(KERN_INFO "ams: Unloading\n");
+
+ ams_info.has_device = 0;
+ }
+
+ return 0;
+}
+
+static void ams_i2c_exit(void)
+{
+ i2c_del_driver(&ams_i2c_driver);
+}
+
+int __init ams_i2c_init(struct device_node *np)
+{
+ int result;
+
+ /* Set implementation stuff */
+ ams_info.of_node = np;
+ ams_info.exit = ams_i2c_exit;
+ ams_info.get_vendor = ams_i2c_get_vendor;
+ ams_info.get_xyz = ams_i2c_get_xyz;
+ ams_info.clear_irq = ams_i2c_clear_irq;
+ ams_info.bustype = BUS_I2C;
+
+ result = i2c_add_driver(&ams_i2c_driver);
+
+ return result;
+}
--- /dev/null
+/*
+ * Apple Motion Sensor driver (joystick emulation)
+ *
+ * Copyright (C) 2005 Stelian Pop (stelian@popies.net)
+ * Copyright (C) 2006 Michael Hanselmann (linux-kernel@hansmi.ch)
+ *
+ * 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.
+ */
+
+#include <linux/module.h>
+
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+
+#include "ams.h"
+
+static unsigned int joystick;
+module_param(joystick, bool, S_IRUGO);
+MODULE_PARM_DESC(joystick, "Enable the input class device on module load");
+
+static unsigned int invert;
+module_param(invert, bool, S_IWUSR | S_IRUGO);
+MODULE_PARM_DESC(invert, "Invert input data on X and Y axis");
+
+static DEFINE_MUTEX(ams_input_mutex);
+
+static void ams_idev_poll(struct input_polled_dev *dev)
+{
+ struct input_dev *idev = dev->input;
+ s8 x, y, z;
+
+ mutex_lock(&ams_info.lock);
+
+ ams_sensors(&x, &y, &z);
+
+ x -= ams_info.xcalib;
+ y -= ams_info.ycalib;
+ z -= ams_info.zcalib;
+
+ input_report_abs(idev, ABS_X, invert ? -x : x);
+ input_report_abs(idev, ABS_Y, invert ? -y : y);
+ input_report_abs(idev, ABS_Z, z);
+
+ input_sync(idev);
+
+ mutex_unlock(&ams_info.lock);
+}
+
+/* Call with ams_info.lock held! */
+static int ams_input_enable(void)
+{
+ struct input_dev *input;
+ s8 x, y, z;
+ int error;
+
+ ams_sensors(&x, &y, &z);
+ ams_info.xcalib = x;
+ ams_info.ycalib = y;
+ ams_info.zcalib = z;
+
+ ams_info.idev = input_allocate_polled_device();
+ if (!ams_info.idev)
+ return -ENOMEM;
+
+ ams_info.idev->poll = ams_idev_poll;
+ ams_info.idev->poll_interval = 25;
+
+ input = ams_info.idev->input;
+ input->name = "Apple Motion Sensor";
+ input->id.bustype = ams_info.bustype;
+ input->id.vendor = 0;
+ input->dev.parent = &ams_info.of_dev->dev;
+
+ input_set_abs_params(input, ABS_X, -50, 50, 3, 0);
+ input_set_abs_params(input, ABS_Y, -50, 50, 3, 0);
+ input_set_abs_params(input, ABS_Z, -50, 50, 3, 0);
+
+ set_bit(EV_ABS, input->evbit);
+ set_bit(EV_KEY, input->evbit);
+ set_bit(BTN_TOUCH, input->keybit);
+
+ error = input_register_polled_device(ams_info.idev);
+ if (error) {
+ input_free_polled_device(ams_info.idev);
+ ams_info.idev = NULL;
+ return error;
+ }
+
+ joystick = 1;
+
+ return 0;
+}
+
+static void ams_input_disable(void)
+{
+ if (ams_info.idev) {
+ input_unregister_polled_device(ams_info.idev);
+ input_free_polled_device(ams_info.idev);
+ ams_info.idev = NULL;
+ }
+
+ joystick = 0;
+}
+
+static ssize_t ams_input_show_joystick(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "%d\n", joystick);
+}
+
+static ssize_t ams_input_store_joystick(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ unsigned long enable;
+ int error = 0;
+
+ if (strict_strtoul(buf, 0, &enable) || enable > 1)
+ return -EINVAL;
+
+ mutex_lock(&ams_input_mutex);
+
+ if (enable != joystick) {
+ if (enable)
+ error = ams_input_enable();
+ else
+ ams_input_disable();
+ }
+
+ mutex_unlock(&ams_input_mutex);
+
+ return error ? error : count;
+}
+
+static DEVICE_ATTR(joystick, S_IRUGO | S_IWUSR,
+ ams_input_show_joystick, ams_input_store_joystick);
+
+int ams_input_init(void)
+{
+ if (joystick)
+ ams_input_enable();
+
+ return device_create_file(&ams_info.of_dev->dev, &dev_attr_joystick);
+}
+
+void ams_input_exit(void)
+{
+ device_remove_file(&ams_info.of_dev->dev, &dev_attr_joystick);
+
+ mutex_lock(&ams_input_mutex);
+ ams_input_disable();
+ mutex_unlock(&ams_input_mutex);
+}
--- /dev/null
+/*
+ * Apple Motion Sensor driver (PMU variant)
+ *
+ * Copyright (C) 2006 Michael Hanselmann (linux-kernel@hansmi.ch)
+ *
+ * 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.
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/adb.h>
+#include <linux/pmu.h>
+
+#include "ams.h"
+
+/* Attitude */
+#define AMS_X 0x00
+#define AMS_Y 0x01
+#define AMS_Z 0x02
+
+/* Not exactly known, maybe chip vendor */
+#define AMS_VENDOR 0x03
+
+/* Freefall registers */
+#define AMS_FF_CLEAR 0x04
+#define AMS_FF_ENABLE 0x05
+#define AMS_FF_LOW_LIMIT 0x06
+#define AMS_FF_DEBOUNCE 0x07
+
+/* Shock registers */
+#define AMS_SHOCK_CLEAR 0x08
+#define AMS_SHOCK_ENABLE 0x09
+#define AMS_SHOCK_HIGH_LIMIT 0x0a
+#define AMS_SHOCK_DEBOUNCE 0x0b
+
+/* Global interrupt and power control register */
+#define AMS_CONTROL 0x0c
+
+static u8 ams_pmu_cmd;
+
+static void ams_pmu_req_complete(struct adb_request *req)
+{
+ complete((struct completion *)req->arg);
+}
+
+/* Only call this function from task context */
+static void ams_pmu_set_register(u8 reg, u8 value)
+{
+ static struct adb_request req;
+ DECLARE_COMPLETION(req_complete);
+
+ req.arg = &req_complete;
+ if (pmu_request(&req, ams_pmu_req_complete, 4, ams_pmu_cmd, 0x00, reg, value))
+ return;
+
+ wait_for_completion(&req_complete);
+}
+
+/* Only call this function from task context */
+static u8 ams_pmu_get_register(u8 reg)
+{
+ static struct adb_request req;
+ DECLARE_COMPLETION(req_complete);
+
+ req.arg = &req_complete;
+ if (pmu_request(&req, ams_pmu_req_complete, 3, ams_pmu_cmd, 0x01, reg))
+ return 0;
+
+ wait_for_completion(&req_complete);
+
+ if (req.reply_len > 0)
+ return req.reply[0];
+ else
+ return 0;
+}
+
+/* Enables or disables the specified interrupts */
+static void ams_pmu_set_irq(enum ams_irq reg, char enable)
+{
+ if (reg & AMS_IRQ_FREEFALL) {
+ u8 val = ams_pmu_get_register(AMS_FF_ENABLE);
+ if (enable)
+ val |= 0x80;
+ else
+ val &= ~0x80;
+ ams_pmu_set_register(AMS_FF_ENABLE, val);
+ }
+
+ if (reg & AMS_IRQ_SHOCK) {
+ u8 val = ams_pmu_get_register(AMS_SHOCK_ENABLE);
+ if (enable)
+ val |= 0x80;
+ else
+ val &= ~0x80;
+ ams_pmu_set_register(AMS_SHOCK_ENABLE, val);
+ }
+
+ if (reg & AMS_IRQ_GLOBAL) {
+ u8 val = ams_pmu_get_register(AMS_CONTROL);
+ if (enable)
+ val |= 0x80;
+ else
+ val &= ~0x80;
+ ams_pmu_set_register(AMS_CONTROL, val);
+ }
+}
+
+static void ams_pmu_clear_irq(enum ams_irq reg)
+{
+ if (reg & AMS_IRQ_FREEFALL)
+ ams_pmu_set_register(AMS_FF_CLEAR, 0x00);
+
+ if (reg & AMS_IRQ_SHOCK)
+ ams_pmu_set_register(AMS_SHOCK_CLEAR, 0x00);
+}
+
+static u8 ams_pmu_get_vendor(void)
+{
+ return ams_pmu_get_register(AMS_VENDOR);
+}
+
+static void ams_pmu_get_xyz(s8 *x, s8 *y, s8 *z)
+{
+ *x = ams_pmu_get_register(AMS_X);
+ *y = ams_pmu_get_register(AMS_Y);
+ *z = ams_pmu_get_register(AMS_Z);
+}
+
+static void ams_pmu_exit(void)
+{
+ ams_sensor_detach();
+
+ /* Disable interrupts */
+ ams_pmu_set_irq(AMS_IRQ_ALL, 0);
+
+ /* Clear interrupts */
+ ams_pmu_clear_irq(AMS_IRQ_ALL);
+
+ ams_info.has_device = 0;
+
+ printk(KERN_INFO "ams: Unloading\n");
+}
+
+int __init ams_pmu_init(struct device_node *np)
+{
+ const u32 *prop;
+ int result;
+
+ /* Set implementation stuff */
+ ams_info.of_node = np;
+ ams_info.exit = ams_pmu_exit;
+ ams_info.get_vendor = ams_pmu_get_vendor;
+ ams_info.get_xyz = ams_pmu_get_xyz;
+ ams_info.clear_irq = ams_pmu_clear_irq;
+ ams_info.bustype = BUS_HOST;
+
+ /* Get PMU command, should be 0x4e, but we can never know */
+ prop = of_get_property(ams_info.of_node, "reg", NULL);
+ if (!prop)
+ return -ENODEV;
+
+ ams_pmu_cmd = ((*prop) >> 8) & 0xff;
+
+ /* Disable interrupts */
+ ams_pmu_set_irq(AMS_IRQ_ALL, 0);
+
+ /* Clear interrupts */
+ ams_pmu_clear_irq(AMS_IRQ_ALL);
+
+ result = ams_sensor_attach();
+ if (result < 0)
+ return result;
+
+ /* Set default values */
+ ams_pmu_set_register(AMS_FF_LOW_LIMIT, 0x15);
+ ams_pmu_set_register(AMS_FF_ENABLE, 0x08);
+ ams_pmu_set_register(AMS_FF_DEBOUNCE, 0x14);
+
+ ams_pmu_set_register(AMS_SHOCK_HIGH_LIMIT, 0x60);
+ ams_pmu_set_register(AMS_SHOCK_ENABLE, 0x0f);
+ ams_pmu_set_register(AMS_SHOCK_DEBOUNCE, 0x14);
+
+ ams_pmu_set_register(AMS_CONTROL, 0x4f);
+
+ /* Clear interrupts */
+ ams_pmu_clear_irq(AMS_IRQ_ALL);
+
+ ams_info.has_device = 1;
+
+ /* Enable interrupts */
+ ams_pmu_set_irq(AMS_IRQ_ALL, 1);
+
+ printk(KERN_INFO "ams: Found PMU based motion sensor\n");
+
+ return 0;
+}
--- /dev/null
+#include <linux/i2c.h>
+#include <linux/input-polldev.h>
+#include <linux/kthread.h>
+#include <linux/mutex.h>
+#include <linux/spinlock.h>
+#include <linux/types.h>
+#include <linux/of_device.h>
+
+enum ams_irq {
+ AMS_IRQ_FREEFALL = 0x01,
+ AMS_IRQ_SHOCK = 0x02,
+ AMS_IRQ_GLOBAL = 0x04,
+ AMS_IRQ_ALL =
+ AMS_IRQ_FREEFALL |
+ AMS_IRQ_SHOCK |
+ AMS_IRQ_GLOBAL,
+};
+
+struct ams {
+ /* Locks */
+ spinlock_t irq_lock;
+ struct mutex lock;
+
+ /* General properties */
+ struct device_node *of_node;
+ struct platform_device *of_dev;
+ char has_device;
+ char vflag;
+ u32 orient1;
+ u32 orient2;
+
+ /* Interrupt worker */
+ struct work_struct worker;
+ u8 worker_irqs;
+
+ /* Implementation
+ *
+ * Only call these functions with the main lock held.
+ */
+ void (*exit)(void);
+
+ void (*get_xyz)(s8 *x, s8 *y, s8 *z);
+ u8 (*get_vendor)(void);
+
+ void (*clear_irq)(enum ams_irq reg);
+
+#ifdef CONFIG_SENSORS_AMS_I2C
+ /* I2C properties */
+ struct i2c_client *i2c_client;
+#endif
+
+ /* Joystick emulation */
+ struct input_polled_dev *idev;
+ __u16 bustype;
+
+ /* calibrated null values */
+ int xcalib, ycalib, zcalib;
+};
+
+extern struct ams ams_info;
+
+extern void ams_sensors(s8 *x, s8 *y, s8 *z);
+extern int ams_sensor_attach(void);
+extern void ams_sensor_detach(void);
+
+extern int ams_pmu_init(struct device_node *np);
+extern int ams_i2c_init(struct device_node *np);
+
+extern int ams_input_init(void);
+extern void ams_input_exit(void);
projects / cascardo / linux.git / commitdiff