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-rw-r--r--drivers/hwmon/f71882fg.c4
-rw-r--r--drivers/hwmon/hp_accel.c85
-rw-r--r--drivers/hwmon/lis3lv02d.c195
-rw-r--r--drivers/hwmon/lis3lv02d.h21
-rw-r--r--drivers/hwmon/vt1211.c2
-rw-r--r--drivers/hwmon/w83627ehf.c2
6 files changed, 263 insertions, 46 deletions
diff --git a/drivers/hwmon/f71882fg.c b/drivers/hwmon/f71882fg.c
index 609cafff86b..5f81ddf7150 100644
--- a/drivers/hwmon/f71882fg.c
+++ b/drivers/hwmon/f71882fg.c
@@ -1872,7 +1872,7 @@ static int __init f71882fg_find(int sioaddr, unsigned short *address,
devid = superio_inw(sioaddr, SIO_REG_MANID);
if (devid != SIO_FINTEK_ID) {
- printk(KERN_INFO DRVNAME ": Not a Fintek device\n");
+ pr_debug(DRVNAME ": Not a Fintek device\n");
goto exit;
}
@@ -1932,7 +1932,7 @@ static int __init f71882fg_device_add(unsigned short address,
res.name = f71882fg_pdev->name;
err = acpi_check_resource_conflict(&res);
if (err)
- return err;
+ goto exit_device_put;
err = platform_device_add_resources(f71882fg_pdev, &res, 1);
if (err) {
diff --git a/drivers/hwmon/hp_accel.c b/drivers/hwmon/hp_accel.c
index abf4dfc8ec2..29c83b5b969 100644
--- a/drivers/hwmon/hp_accel.c
+++ b/drivers/hwmon/hp_accel.c
@@ -166,6 +166,18 @@ static struct axis_conversion lis3lv02d_axis_xy_swap_yz_inverted = {2, -1, -3};
}, \
.driver_data = &lis3lv02d_axis_##_axis \
}
+
+#define AXIS_DMI_MATCH2(_ident, _class1, _name1, \
+ _class2, _name2, \
+ _axis) { \
+ .ident = _ident, \
+ .callback = lis3lv02d_dmi_matched, \
+ .matches = { \
+ DMI_MATCH(DMI_##_class1, _name1), \
+ DMI_MATCH(DMI_##_class2, _name2), \
+ }, \
+ .driver_data = &lis3lv02d_axis_##_axis \
+}
static struct dmi_system_id lis3lv02d_dmi_ids[] = {
/* product names are truncated to match all kinds of a same model */
AXIS_DMI_MATCH("NC64x0", "HP Compaq nc64", x_inverted),
@@ -179,6 +191,16 @@ static struct dmi_system_id lis3lv02d_dmi_ids[] = {
AXIS_DMI_MATCH("NC673x", "HP Compaq 673", xy_rotated_left_usd),
AXIS_DMI_MATCH("NC651xx", "HP Compaq 651", xy_rotated_right),
AXIS_DMI_MATCH("NC671xx", "HP Compaq 671", xy_swap_yz_inverted),
+ /* Intel-based HP Pavilion dv5 */
+ AXIS_DMI_MATCH2("HPDV5_I",
+ PRODUCT_NAME, "HP Pavilion dv5",
+ BOARD_NAME, "3603",
+ x_inverted),
+ /* AMD-based HP Pavilion dv5 */
+ AXIS_DMI_MATCH2("HPDV5_A",
+ PRODUCT_NAME, "HP Pavilion dv5",
+ BOARD_NAME, "3600",
+ y_inverted),
{ NULL, }
/* Laptop models without axis info (yet):
* "NC6910" "HP Compaq 6910"
@@ -213,9 +235,49 @@ static struct delayed_led_classdev hpled_led = {
.set_brightness = hpled_set,
};
+static acpi_status
+lis3lv02d_get_resource(struct acpi_resource *resource, void *context)
+{
+ if (resource->type == ACPI_RESOURCE_TYPE_EXTENDED_IRQ) {
+ struct acpi_resource_extended_irq *irq;
+ u32 *device_irq = context;
+
+ irq = &resource->data.extended_irq;
+ *device_irq = irq->interrupts[0];
+ }
+
+ return AE_OK;
+}
+
+static void lis3lv02d_enum_resources(struct acpi_device *device)
+{
+ acpi_status status;
+
+ status = acpi_walk_resources(device->handle, METHOD_NAME__CRS,
+ lis3lv02d_get_resource, &adev.irq);
+ if (ACPI_FAILURE(status))
+ printk(KERN_DEBUG DRIVER_NAME ": Error getting resources\n");
+}
+
+static s16 lis3lv02d_read_16(acpi_handle handle, int reg)
+{
+ u8 lo, hi;
+
+ adev.read(handle, reg - 1, &lo);
+ adev.read(handle, reg, &hi);
+ /* In "12 bit right justified" mode, bit 6, bit 7, bit 8 = bit 5 */
+ return (s16)((hi << 8) | lo);
+}
+
+static s16 lis3lv02d_read_8(acpi_handle handle, int reg)
+{
+ s8 lo;
+ adev.read(handle, reg, &lo);
+ return lo;
+}
+
static int lis3lv02d_add(struct acpi_device *device)
{
- u8 val;
int ret;
if (!device)
@@ -229,10 +291,22 @@ static int lis3lv02d_add(struct acpi_device *device)
strcpy(acpi_device_class(device), ACPI_MDPS_CLASS);
device->driver_data = &adev;
- lis3lv02d_acpi_read(device->handle, WHO_AM_I, &val);
- if ((val != LIS3LV02DL_ID) && (val != LIS302DL_ID)) {
+ lis3lv02d_acpi_read(device->handle, WHO_AM_I, &adev.whoami);
+ switch (adev.whoami) {
+ case LIS_DOUBLE_ID:
+ printk(KERN_INFO DRIVER_NAME ": 2-byte sensor found\n");
+ adev.read_data = lis3lv02d_read_16;
+ adev.mdps_max_val = 2048;
+ break;
+ case LIS_SINGLE_ID:
+ printk(KERN_INFO DRIVER_NAME ": 1-byte sensor found\n");
+ adev.read_data = lis3lv02d_read_8;
+ adev.mdps_max_val = 128;
+ break;
+ default:
printk(KERN_ERR DRIVER_NAME
- ": Accelerometer chip not LIS3LV02D{L,Q}\n");
+ ": unknown sensor type 0x%X\n", adev.whoami);
+ return -EINVAL;
}
/* If possible use a "standard" axes order */
@@ -247,6 +321,9 @@ static int lis3lv02d_add(struct acpi_device *device)
if (ret)
return ret;
+ /* obtain IRQ number of our device from ACPI */
+ lis3lv02d_enum_resources(adev.device);
+
ret = lis3lv02d_init_device(&adev);
if (ret) {
flush_work(&hpled_led.work);
diff --git a/drivers/hwmon/lis3lv02d.c b/drivers/hwmon/lis3lv02d.c
index 219d2d0d5a6..8bb2158f045 100644
--- a/drivers/hwmon/lis3lv02d.c
+++ b/drivers/hwmon/lis3lv02d.c
@@ -3,7 +3,7 @@
*
* Copyright (C) 2007-2008 Yan Burman
* Copyright (C) 2008 Eric Piel
- * Copyright (C) 2008 Pavel Machek
+ * Copyright (C) 2008-2009 Pavel Machek
*
* 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
@@ -35,6 +35,7 @@
#include <linux/poll.h>
#include <linux/freezer.h>
#include <linux/uaccess.h>
+#include <linux/miscdevice.h>
#include <acpi/acpi_drivers.h>
#include <asm/atomic.h>
#include "lis3lv02d.h"
@@ -52,24 +53,14 @@
* joystick.
*/
-/* Maximum value our axis may get for the input device (signed 12 bits) */
-#define MDPS_MAX_VAL 2048
+struct acpi_lis3lv02d adev = {
+ .misc_wait = __WAIT_QUEUE_HEAD_INITIALIZER(adev.misc_wait),
+};
-struct acpi_lis3lv02d adev;
EXPORT_SYMBOL_GPL(adev);
static int lis3lv02d_add_fs(struct acpi_device *device);
-static s16 lis3lv02d_read_16(acpi_handle handle, int reg)
-{
- u8 lo, hi;
-
- adev.read(handle, reg, &lo);
- adev.read(handle, reg + 1, &hi);
- /* In "12 bit right justified" mode, bit 6, bit 7, bit 8 = bit 5 */
- return (s16)((hi << 8) | lo);
-}
-
/**
* lis3lv02d_get_axis - For the given axis, give the value converted
* @axis: 1,2,3 - can also be negative
@@ -98,9 +89,9 @@ static void lis3lv02d_get_xyz(acpi_handle handle, int *x, int *y, int *z)
{
int position[3];
- position[0] = lis3lv02d_read_16(handle, OUTX_L);
- position[1] = lis3lv02d_read_16(handle, OUTY_L);
- position[2] = lis3lv02d_read_16(handle, OUTZ_L);
+ position[0] = adev.read_data(handle, OUTX);
+ position[1] = adev.read_data(handle, OUTY);
+ position[2] = adev.read_data(handle, OUTZ);
*x = lis3lv02d_get_axis(adev.ac.x, position);
*y = lis3lv02d_get_axis(adev.ac.y, position);
@@ -110,26 +101,13 @@ static void lis3lv02d_get_xyz(acpi_handle handle, int *x, int *y, int *z)
void lis3lv02d_poweroff(acpi_handle handle)
{
adev.is_on = 0;
- /* disable X,Y,Z axis and power down */
- adev.write(handle, CTRL_REG1, 0x00);
}
EXPORT_SYMBOL_GPL(lis3lv02d_poweroff);
void lis3lv02d_poweron(acpi_handle handle)
{
- u8 val;
-
adev.is_on = 1;
adev.init(handle);
- adev.write(handle, FF_WU_CFG, 0);
- /*
- * BDU: LSB and MSB values are not updated until both have been read.
- * So the value read will always be correct.
- * IEN: Interrupt for free-fall and DD, not for data-ready.
- */
- adev.read(handle, CTRL_REG2, &val);
- val |= CTRL2_BDU | CTRL2_IEN;
- adev.write(handle, CTRL_REG2, val);
}
EXPORT_SYMBOL_GPL(lis3lv02d_poweron);
@@ -162,6 +140,140 @@ static void lis3lv02d_decrease_use(struct acpi_lis3lv02d *dev)
mutex_unlock(&dev->lock);
}
+static irqreturn_t lis302dl_interrupt(int irq, void *dummy)
+{
+ /*
+ * Be careful: on some HP laptops the bios force DD when on battery and
+ * the lid is closed. This leads to interrupts as soon as a little move
+ * is done.
+ */
+ atomic_inc(&adev.count);
+
+ wake_up_interruptible(&adev.misc_wait);
+ kill_fasync(&adev.async_queue, SIGIO, POLL_IN);
+ return IRQ_HANDLED;
+}
+
+static int lis3lv02d_misc_open(struct inode *inode, struct file *file)
+{
+ int ret;
+
+ if (test_and_set_bit(0, &adev.misc_opened))
+ return -EBUSY; /* already open */
+
+ atomic_set(&adev.count, 0);
+
+ /*
+ * The sensor can generate interrupts for free-fall and direction
+ * detection (distinguishable with FF_WU_SRC and DD_SRC) but to keep
+ * the things simple and _fast_ we activate it only for free-fall, so
+ * no need to read register (very slow with ACPI). For the same reason,
+ * we forbid shared interrupts.
+ *
+ * IRQF_TRIGGER_RISING seems pointless on HP laptops because the
+ * io-apic is not configurable (and generates a warning) but I keep it
+ * in case of support for other hardware.
+ */
+ ret = request_irq(adev.irq, lis302dl_interrupt, IRQF_TRIGGER_RISING,
+ DRIVER_NAME, &adev);
+
+ if (ret) {
+ clear_bit(0, &adev.misc_opened);
+ printk(KERN_ERR DRIVER_NAME ": IRQ%d allocation failed\n", adev.irq);
+ return -EBUSY;
+ }
+ lis3lv02d_increase_use(&adev);
+ printk("lis3: registered interrupt %d\n", adev.irq);
+ return 0;
+}
+
+static int lis3lv02d_misc_release(struct inode *inode, struct file *file)
+{
+ fasync_helper(-1, file, 0, &adev.async_queue);
+ lis3lv02d_decrease_use(&adev);
+ free_irq(adev.irq, &adev);
+ clear_bit(0, &adev.misc_opened); /* release the device */
+ return 0;
+}
+
+static ssize_t lis3lv02d_misc_read(struct file *file, char __user *buf,
+ size_t count, loff_t *pos)
+{
+ DECLARE_WAITQUEUE(wait, current);
+ u32 data;
+ unsigned char byte_data;
+ ssize_t retval = 1;
+
+ if (count < 1)
+ return -EINVAL;
+
+ add_wait_queue(&adev.misc_wait, &wait);
+ while (true) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ data = atomic_xchg(&adev.count, 0);
+ if (data)
+ break;
+
+ if (file->f_flags & O_NONBLOCK) {
+ retval = -EAGAIN;
+ goto out;
+ }
+
+ if (signal_pending(current)) {
+ retval = -ERESTARTSYS;
+ goto out;
+ }
+
+ schedule();
+ }
+
+ if (data < 255)
+ byte_data = data;
+ else
+ byte_data = 255;
+
+ /* make sure we are not going into copy_to_user() with
+ * TASK_INTERRUPTIBLE state */
+ set_current_state(TASK_RUNNING);
+ if (copy_to_user(buf, &byte_data, sizeof(byte_data)))
+ retval = -EFAULT;
+
+out:
+ __set_current_state(TASK_RUNNING);
+ remove_wait_queue(&adev.misc_wait, &wait);
+
+ return retval;
+}
+
+static unsigned int lis3lv02d_misc_poll(struct file *file, poll_table *wait)
+{
+ poll_wait(file, &adev.misc_wait, wait);
+ if (atomic_read(&adev.count))
+ return POLLIN | POLLRDNORM;
+ return 0;
+}
+
+static int lis3lv02d_misc_fasync(int fd, struct file *file, int on)
+{
+ return fasync_helper(fd, file, on, &adev.async_queue);
+}
+
+static const struct file_operations lis3lv02d_misc_fops = {
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .read = lis3lv02d_misc_read,
+ .open = lis3lv02d_misc_open,
+ .release = lis3lv02d_misc_release,
+ .poll = lis3lv02d_misc_poll,
+ .fasync = lis3lv02d_misc_fasync,
+};
+
+static struct miscdevice lis3lv02d_misc_device = {
+ .minor = MISC_DYNAMIC_MINOR,
+ .name = "freefall",
+ .fops = &lis3lv02d_misc_fops,
+};
+
/**
* lis3lv02d_joystick_kthread - Kthread polling function
* @data: unused - here to conform to threadfn prototype
@@ -203,7 +315,6 @@ static void lis3lv02d_joystick_close(struct input_dev *input)
lis3lv02d_decrease_use(&adev);
}
-
static inline void lis3lv02d_calibrate_joystick(void)
{
lis3lv02d_get_xyz(adev.device->handle, &adev.xcalib, &adev.ycalib, &adev.zcalib);
@@ -231,9 +342,9 @@ int lis3lv02d_joystick_enable(void)
adev.idev->close = lis3lv02d_joystick_close;
set_bit(EV_ABS, adev.idev->evbit);
- input_set_abs_params(adev.idev, ABS_X, -MDPS_MAX_VAL, MDPS_MAX_VAL, 3, 3);
- input_set_abs_params(adev.idev, ABS_Y, -MDPS_MAX_VAL, MDPS_MAX_VAL, 3, 3);
- input_set_abs_params(adev.idev, ABS_Z, -MDPS_MAX_VAL, MDPS_MAX_VAL, 3, 3);
+ input_set_abs_params(adev.idev, ABS_X, -adev.mdps_max_val, adev.mdps_max_val, 3, 3);
+ input_set_abs_params(adev.idev, ABS_Y, -adev.mdps_max_val, adev.mdps_max_val, 3, 3);
+ input_set_abs_params(adev.idev, ABS_Z, -adev.mdps_max_val, adev.mdps_max_val, 3, 3);
err = input_register_device(adev.idev);
if (err) {
@@ -250,6 +361,7 @@ void lis3lv02d_joystick_disable(void)
if (!adev.idev)
return;
+ misc_deregister(&lis3lv02d_misc_device);
input_unregister_device(adev.idev);
adev.idev = NULL;
}
@@ -268,6 +380,19 @@ int lis3lv02d_init_device(struct acpi_lis3lv02d *dev)
if (lis3lv02d_joystick_enable())
printk(KERN_ERR DRIVER_NAME ": joystick initialization failed\n");
+ printk("lis3_init_device: irq %d\n", dev->irq);
+
+ /* if we did not get an IRQ from ACPI - we have nothing more to do */
+ if (!dev->irq) {
+ printk(KERN_ERR DRIVER_NAME
+ ": No IRQ in ACPI. Disabling /dev/freefall\n");
+ goto out;
+ }
+
+ printk("lis3: registering device\n");
+ if (misc_register(&lis3lv02d_misc_device))
+ printk(KERN_ERR DRIVER_NAME ": misc_register failed\n");
+out:
lis3lv02d_decrease_use(dev);
return 0;
}
@@ -351,6 +476,6 @@ int lis3lv02d_remove_fs(void)
EXPORT_SYMBOL_GPL(lis3lv02d_remove_fs);
MODULE_DESCRIPTION("ST LIS3LV02Dx three-axis digital accelerometer driver");
-MODULE_AUTHOR("Yan Burman and Eric Piel");
+MODULE_AUTHOR("Yan Burman, Eric Piel, Pavel Machek");
MODULE_LICENSE("GPL");
diff --git a/drivers/hwmon/lis3lv02d.h b/drivers/hwmon/lis3lv02d.h
index 223f1c0763b..75972bf372f 100644
--- a/drivers/hwmon/lis3lv02d.h
+++ b/drivers/hwmon/lis3lv02d.h
@@ -22,12 +22,15 @@
/*
* The actual chip is STMicroelectronics LIS3LV02DL or LIS3LV02DQ that seems to
* be connected via SPI. There exists also several similar chips (such as LIS302DL or
- * LIS3L02DQ) but not in the HP laptops and they have slightly different registers.
+ * LIS3L02DQ) and they have slightly different registers, but we can provide a
+ * common interface for all of them.
* They can also be connected via I²C.
*/
-#define LIS3LV02DL_ID 0x3A /* Also the LIS3LV02DQ */
-#define LIS302DL_ID 0x3B /* Also the LIS202DL! */
+/* 2-byte registers */
+#define LIS_DOUBLE_ID 0x3A /* LIS3LV02D[LQ] */
+/* 1-byte registers */
+#define LIS_SINGLE_ID 0x3B /* LIS[32]02DL and others */
enum lis3lv02d_reg {
WHO_AM_I = 0x0F,
@@ -44,10 +47,13 @@ enum lis3lv02d_reg {
STATUS_REG = 0x27,
OUTX_L = 0x28,
OUTX_H = 0x29,
+ OUTX = 0x29,
OUTY_L = 0x2A,
OUTY_H = 0x2B,
+ OUTY = 0x2B,
OUTZ_L = 0x2C,
OUTZ_H = 0x2D,
+ OUTZ = 0x2D,
FF_WU_CFG = 0x30,
FF_WU_SRC = 0x31,
FF_WU_ACK = 0x32,
@@ -159,6 +165,10 @@ struct acpi_lis3lv02d {
acpi_status (*write) (acpi_handle handle, int reg, u8 val);
acpi_status (*read) (acpi_handle handle, int reg, u8 *ret);
+ u8 whoami; /* 3Ah: 2-byte registries, 3Bh: 1-byte registries */
+ s16 (*read_data) (acpi_handle handle, int reg);
+ int mdps_max_val;
+
struct input_dev *idev; /* input device */
struct task_struct *kthread; /* kthread for input */
struct mutex lock;
@@ -170,6 +180,11 @@ struct acpi_lis3lv02d {
unsigned char is_on; /* whether the device is on or off */
unsigned char usage; /* usage counter */
struct axis_conversion ac; /* hw -> logical axis */
+
+ u32 irq; /* IRQ number */
+ struct fasync_struct *async_queue; /* queue for the misc device */
+ wait_queue_head_t misc_wait; /* Wait queue for the misc device */
+ unsigned long misc_opened; /* bit0: whether the device is open */
};
int lis3lv02d_init_device(struct acpi_lis3lv02d *dev);
diff --git a/drivers/hwmon/vt1211.c b/drivers/hwmon/vt1211.c
index b0ce3785228..73f77a9b8b1 100644
--- a/drivers/hwmon/vt1211.c
+++ b/drivers/hwmon/vt1211.c
@@ -1262,7 +1262,7 @@ static int __init vt1211_device_add(unsigned short address)
res.name = pdev->name;
err = acpi_check_resource_conflict(&res);
if (err)
- goto EXIT;
+ goto EXIT_DEV_PUT;
err = platform_device_add_resources(pdev, &res, 1);
if (err) {
diff --git a/drivers/hwmon/w83627ehf.c b/drivers/hwmon/w83627ehf.c
index cb808d01536..feae743ba99 100644
--- a/drivers/hwmon/w83627ehf.c
+++ b/drivers/hwmon/w83627ehf.c
@@ -1548,7 +1548,7 @@ static int __init sensors_w83627ehf_init(void)
err = acpi_check_resource_conflict(&res);
if (err)
- goto exit;
+ goto exit_device_put;
err = platform_device_add_resources(pdev, &res, 1);
if (err) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 05:49:45 +0000