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Subject[PATCH 1/6] toshiba acpi: Convert to use acpi driver
Date
Changes toshiba_acpi to register an acpi driver and eliminates the
platform device it was using. Also eliminates most global
variables, moving them into toshiba_acpi_dev, along with some
other miscellaneous fixes and cleanup.

Signed-off-by: Azael Avalos <coproscefalo@gmail.com>
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
---
drivers/platform/x86/toshiba_acpi.c | 506 ++++++++++++++++++-----------------
1 files changed, 261 insertions(+), 245 deletions(-)

diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
index cb009b2..d74c97c 100644
--- a/drivers/platform/x86/toshiba_acpi.c
+++ b/drivers/platform/x86/toshiba_acpi.c
@@ -47,7 +47,6 @@
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/backlight.h>
-#include <linux/platform_device.h>
#include <linux/rfkill.h>
#include <linux/input.h>
#include <linux/input/sparse-keymap.h>
@@ -111,6 +110,22 @@ MODULE_LICENSE("GPL");
#define HCI_WIRELESS_BT_ATTACH 0x40
#define HCI_WIRELESS_BT_POWER 0x80

+struct toshiba_acpi_dev {
+ struct acpi_device *acpi_dev;
+ const char *method_hci;
+ struct rfkill *bt_rfk;
+ struct input_dev *hotkey_dev;
+ struct backlight_device *backlight_dev;
+ struct led_classdev led_dev;
+ int illumination_installed;
+ int force_fan;
+ int last_key_event;
+ int key_event_valid;
+ acpi_handle handle;
+
+ struct mutex mutex;
+};
+
static const struct acpi_device_id toshiba_device_ids[] = {
{"TOS6200", 0},
{"TOS6208", 0},
@@ -119,7 +134,7 @@ static const struct acpi_device_id toshiba_device_ids[] = {
};
MODULE_DEVICE_TABLE(acpi, toshiba_device_ids);

-static const struct key_entry toshiba_acpi_keymap[] __initconst = {
+static const struct key_entry toshiba_acpi_keymap[] __devinitconst = {
{ KE_KEY, 0x101, { KEY_MUTE } },
{ KE_KEY, 0x102, { KEY_ZOOMOUT } },
{ KE_KEY, 0x103, { KEY_ZOOMIN } },
@@ -179,29 +194,11 @@ static int write_acpi_int(const char *methodName, int val)
return (status == AE_OK);
}

-#if 0
-static int read_acpi_int(const char *methodName, int *pVal)
-{
- struct acpi_buffer results;
- union acpi_object out_objs[1];
- acpi_status status;
-
- results.length = sizeof(out_objs);
- results.pointer = out_objs;
-
- status = acpi_evaluate_object(0, (char *)methodName, 0, &results);
- *pVal = out_objs[0].integer.value;
-
- return (status == AE_OK) && (out_objs[0].type == ACPI_TYPE_INTEGER);
-}
-#endif
-
-static const char *method_hci /*= 0*/ ;
-
/* Perform a raw HCI call. Here we don't care about input or output buffer
* format.
*/
-static acpi_status hci_raw(const u32 in[HCI_WORDS], u32 out[HCI_WORDS])
+static acpi_status hci_raw(struct toshiba_acpi_dev *dev,
+ const u32 in[HCI_WORDS], u32 out[HCI_WORDS])
{
struct acpi_object_list params;
union acpi_object in_objs[HCI_WORDS];
@@ -220,7 +217,7 @@ static acpi_status hci_raw(const u32 in[HCI_WORDS], u32 out[HCI_WORDS])
results.length = sizeof(out_objs);
results.pointer = out_objs;

- status = acpi_evaluate_object(NULL, (char *)method_hci, &params,
+ status = acpi_evaluate_object(NULL, (char *)dev->method_hci, &params,
&results);
if ((status == AE_OK) && (out_objs->package.count <= HCI_WORDS)) {
for (i = 0; i < out_objs->package.count; ++i) {
@@ -237,85 +234,79 @@ static acpi_status hci_raw(const u32 in[HCI_WORDS], u32 out[HCI_WORDS])
* may be useful (such as "not supported").
*/

-static acpi_status hci_write1(u32 reg, u32 in1, u32 * result)
+static acpi_status hci_write1(struct toshiba_acpi_dev *dev, u32 reg,
+ u32 in1, u32 *result)
{
u32 in[HCI_WORDS] = { HCI_SET, reg, in1, 0, 0, 0 };
u32 out[HCI_WORDS];
- acpi_status status = hci_raw(in, out);
+ acpi_status status = hci_raw(dev, in, out);
*result = (status == AE_OK) ? out[0] : HCI_FAILURE;
return status;
}

-static acpi_status hci_read1(u32 reg, u32 * out1, u32 * result)
+static acpi_status hci_read1(struct toshiba_acpi_dev *dev, u32 reg,
+ u32 *out1, u32 *result)
{
u32 in[HCI_WORDS] = { HCI_GET, reg, 0, 0, 0, 0 };
u32 out[HCI_WORDS];
- acpi_status status = hci_raw(in, out);
+ acpi_status status = hci_raw(dev, in, out);
*out1 = out[2];
*result = (status == AE_OK) ? out[0] : HCI_FAILURE;
return status;
}

-static acpi_status hci_write2(u32 reg, u32 in1, u32 in2, u32 *result)
+static acpi_status hci_write2(struct toshiba_acpi_dev *dev, u32 reg,
+ u32 in1, u32 in2, u32 *result)
{
u32 in[HCI_WORDS] = { HCI_SET, reg, in1, in2, 0, 0 };
u32 out[HCI_WORDS];
- acpi_status status = hci_raw(in, out);
+ acpi_status status = hci_raw(dev, in, out);
*result = (status == AE_OK) ? out[0] : HCI_FAILURE;
return status;
}

-static acpi_status hci_read2(u32 reg, u32 *out1, u32 *out2, u32 *result)
+static acpi_status hci_read2(struct toshiba_acpi_dev *dev, u32 reg,
+ u32 *out1, u32 *out2, u32 *result)
{
u32 in[HCI_WORDS] = { HCI_GET, reg, *out1, *out2, 0, 0 };
u32 out[HCI_WORDS];
- acpi_status status = hci_raw(in, out);
+ acpi_status status = hci_raw(dev, in, out);
*out1 = out[2];
*out2 = out[3];
*result = (status == AE_OK) ? out[0] : HCI_FAILURE;
return status;
}

-struct toshiba_acpi_dev {
- struct platform_device *p_dev;
- struct rfkill *bt_rfk;
- struct input_dev *hotkey_dev;
- int illumination_installed;
- acpi_handle handle;
-
- const char *bt_name;
-
- struct mutex mutex;
-};
-
/* Illumination support */
-static int toshiba_illumination_available(void)
+static int toshiba_illumination_available(struct toshiba_acpi_dev *dev)
{
u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 };
u32 out[HCI_WORDS];
acpi_status status;

in[0] = 0xf100;
- status = hci_raw(in, out);
+ status = hci_raw(dev, in, out);
if (ACPI_FAILURE(status)) {
pr_info("Illumination device not available\n");
return 0;
}
in[0] = 0xf400;
- status = hci_raw(in, out);
+ status = hci_raw(dev, in, out);
return 1;
}

static void toshiba_illumination_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
+ struct toshiba_acpi_dev *dev = container_of(cdev,
+ struct toshiba_acpi_dev, led_dev);
u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 };
u32 out[HCI_WORDS];
acpi_status status;

/* First request : initialize communication. */
in[0] = 0xf100;
- status = hci_raw(in, out);
+ status = hci_raw(dev, in, out);
if (ACPI_FAILURE(status)) {
pr_info("Illumination device not available\n");
return;
@@ -326,7 +317,7 @@ static void toshiba_illumination_set(struct led_classdev *cdev,
in[0] = 0xf400;
in[1] = 0x14e;
in[2] = 1;
- status = hci_raw(in, out);
+ status = hci_raw(dev, in, out);
if (ACPI_FAILURE(status)) {
pr_info("ACPI call for illumination failed\n");
return;
@@ -336,7 +327,7 @@ static void toshiba_illumination_set(struct led_classdev *cdev,
in[0] = 0xf400;
in[1] = 0x14e;
in[2] = 0;
- status = hci_raw(in, out);
+ status = hci_raw(dev, in, out);
if (ACPI_FAILURE(status)) {
pr_info("ACPI call for illumination failed.\n");
return;
@@ -347,11 +338,13 @@ static void toshiba_illumination_set(struct led_classdev *cdev,
in[0] = 0xf200;
in[1] = 0;
in[2] = 0;
- hci_raw(in, out);
+ hci_raw(dev, in, out);
}

static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
{
+ struct toshiba_acpi_dev *dev = container_of(cdev,
+ struct toshiba_acpi_dev, led_dev);
u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 };
u32 out[HCI_WORDS];
acpi_status status;
@@ -359,7 +352,7 @@ static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)

/* First request : initialize communication. */
in[0] = 0xf100;
- status = hci_raw(in, out);
+ status = hci_raw(dev, in, out);
if (ACPI_FAILURE(status)) {
pr_info("Illumination device not available\n");
return LED_OFF;
@@ -368,7 +361,7 @@ static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
/* Check the illumination */
in[0] = 0xf300;
in[1] = 0x14e;
- status = hci_raw(in, out);
+ status = hci_raw(dev, in, out);
if (ACPI_FAILURE(status)) {
pr_info("ACPI call for illumination failed.\n");
return LED_OFF;
@@ -380,46 +373,35 @@ static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
in[0] = 0xf200;
in[1] = 0;
in[2] = 0;
- hci_raw(in, out);
+ hci_raw(dev, in, out);

return result;
}

-static struct led_classdev toshiba_led = {
- .name = "toshiba::illumination",
- .max_brightness = 1,
- .brightness_set = toshiba_illumination_set,
- .brightness_get = toshiba_illumination_get,
-};
-
-static struct toshiba_acpi_dev toshiba_acpi = {
- .bt_name = "Toshiba Bluetooth",
-};
-
/* Bluetooth rfkill handlers */

-static u32 hci_get_bt_present(bool *present)
+static u32 hci_get_bt_present(struct toshiba_acpi_dev *dev, bool *present)
{
u32 hci_result;
u32 value, value2;

value = 0;
value2 = 0;
- hci_read2(HCI_WIRELESS, &value, &value2, &hci_result);
+ hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result);
if (hci_result == HCI_SUCCESS)
*present = (value & HCI_WIRELESS_BT_PRESENT) ? true : false;

return hci_result;
}

-static u32 hci_get_radio_state(bool *radio_state)
+static u32 hci_get_radio_state(struct toshiba_acpi_dev *dev, bool *radio_state)
{
u32 hci_result;
u32 value, value2;

value = 0;
value2 = 0x0001;
- hci_read2(HCI_WIRELESS, &value, &value2, &hci_result);
+ hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result);

*radio_state = value & HCI_WIRELESS_KILL_SWITCH;
return hci_result;
@@ -436,7 +418,7 @@ static int bt_rfkill_set_block(void *data, bool blocked)
value = (blocked == false);

mutex_lock(&dev->mutex);
- if (hci_get_radio_state(&radio_state) != HCI_SUCCESS) {
+ if (hci_get_radio_state(dev, &radio_state) != HCI_SUCCESS) {
err = -EBUSY;
goto out;
}
@@ -446,8 +428,8 @@ static int bt_rfkill_set_block(void *data, bool blocked)
goto out;
}

- hci_write2(HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER, &result1);
- hci_write2(HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH, &result2);
+ hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER, &result1);
+ hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH, &result2);

if (result1 != HCI_SUCCESS || result2 != HCI_SUCCESS)
err = -EBUSY;
@@ -467,7 +449,7 @@ static void bt_rfkill_poll(struct rfkill *rfkill, void *data)

mutex_lock(&dev->mutex);

- hci_result = hci_get_radio_state(&value);
+ hci_result = hci_get_radio_state(dev, &value);
if (hci_result != HCI_SUCCESS) {
/* Can't do anything useful */
mutex_unlock(&dev->mutex);
@@ -488,17 +470,14 @@ static const struct rfkill_ops toshiba_rfk_ops = {
};

static struct proc_dir_entry *toshiba_proc_dir /*= 0*/ ;
-static struct backlight_device *toshiba_backlight_device;
-static int force_fan;
-static int last_key_event;
-static int key_event_valid;

static int get_lcd(struct backlight_device *bd)
{
+ struct toshiba_acpi_dev *dev = bl_get_data(bd);
u32 hci_result;
u32 value;

- hci_read1(HCI_LCD_BRIGHTNESS, &value, &hci_result);
+ hci_read1(dev, HCI_LCD_BRIGHTNESS, &value, &hci_result);
if (hci_result == HCI_SUCCESS) {
return (value >> HCI_LCD_BRIGHTNESS_SHIFT);
} else
@@ -507,8 +486,13 @@ static int get_lcd(struct backlight_device *bd)

static int lcd_proc_show(struct seq_file *m, void *v)
{
- int value = get_lcd(NULL);
+ struct toshiba_acpi_dev *dev = m->private;
+ int value;
+
+ if (!dev->backlight_dev)
+ return -ENODEV;

+ value = get_lcd(dev->backlight_dev);
if (value >= 0) {
seq_printf(m, "brightness: %d\n", value);
seq_printf(m, "brightness_levels: %d\n",
@@ -522,15 +506,15 @@ static int lcd_proc_show(struct seq_file *m, void *v)

static int lcd_proc_open(struct inode *inode, struct file *file)
{
- return single_open(file, lcd_proc_show, NULL);
+ return single_open(file, lcd_proc_show, PDE(inode)->data);
}

-static int set_lcd(int value)
+static int set_lcd(struct toshiba_acpi_dev *dev, int value)
{
u32 hci_result;

value = value << HCI_LCD_BRIGHTNESS_SHIFT;
- hci_write1(HCI_LCD_BRIGHTNESS, value, &hci_result);
+ hci_write1(dev, HCI_LCD_BRIGHTNESS, value, &hci_result);
if (hci_result != HCI_SUCCESS)
return -EFAULT;

@@ -539,12 +523,14 @@ static int set_lcd(int value)

static int set_lcd_status(struct backlight_device *bd)
{
- return set_lcd(bd->props.brightness);
+ struct toshiba_acpi_dev *dev = bl_get_data(bd);
+ return set_lcd(dev, bd->props.brightness);
}

static ssize_t lcd_proc_write(struct file *file, const char __user *buf,
size_t count, loff_t *pos)
{
+ struct toshiba_acpi_dev *dev = PDE(file->f_path.dentry->d_inode)->data;
char cmd[42];
size_t len;
int value;
@@ -557,7 +543,7 @@ static ssize_t lcd_proc_write(struct file *file, const char __user *buf,

if (sscanf(cmd, " brightness : %i", &value) == 1 &&
value >= 0 && value < HCI_LCD_BRIGHTNESS_LEVELS) {
- ret = set_lcd(value);
+ ret = set_lcd(dev, value);
if (ret == 0)
ret = count;
} else {
@@ -577,10 +563,11 @@ static const struct file_operations lcd_proc_fops = {

static int video_proc_show(struct seq_file *m, void *v)
{
+ struct toshiba_acpi_dev *dev = m->private;
u32 hci_result;
u32 value;

- hci_read1(HCI_VIDEO_OUT, &value, &hci_result);
+ hci_read1(dev, HCI_VIDEO_OUT, &value, &hci_result);
if (hci_result == HCI_SUCCESS) {
int is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0;
int is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0;
@@ -597,12 +584,13 @@ static int video_proc_show(struct seq_file *m, void *v)

static int video_proc_open(struct inode *inode, struct file *file)
{
- return single_open(file, video_proc_show, NULL);
+ return single_open(file, video_proc_show, PDE(inode)->data);
}

static ssize_t video_proc_write(struct file *file, const char __user *buf,
size_t count, loff_t *pos)
{
+ struct toshiba_acpi_dev *dev = PDE(file->f_path.dentry->d_inode)->data;
char *cmd, *buffer;
int value;
int remain = count;
@@ -644,7 +632,7 @@ static ssize_t video_proc_write(struct file *file, const char __user *buf,

kfree(cmd);

- hci_read1(HCI_VIDEO_OUT, &video_out, &hci_result);
+ hci_read1(dev, HCI_VIDEO_OUT, &video_out, &hci_result);
if (hci_result == HCI_SUCCESS) {
unsigned int new_video_out = video_out;
if (lcd_out != -1)
@@ -675,13 +663,14 @@ static const struct file_operations video_proc_fops = {

static int fan_proc_show(struct seq_file *m, void *v)
{
+ struct toshiba_acpi_dev *dev = m->private;
u32 hci_result;
u32 value;

- hci_read1(HCI_FAN, &value, &hci_result);
+ hci_read1(dev, HCI_FAN, &value, &hci_result);
if (hci_result == HCI_SUCCESS) {
seq_printf(m, "running: %d\n", (value > 0));
- seq_printf(m, "force_on: %d\n", force_fan);
+ seq_printf(m, "force_on: %d\n", dev->force_fan);
} else {
pr_err("Error reading fan status\n");
}
@@ -691,12 +680,13 @@ static int fan_proc_show(struct seq_file *m, void *v)

static int fan_proc_open(struct inode *inode, struct file *file)
{
- return single_open(file, fan_proc_show, NULL);
+ return single_open(file, fan_proc_show, PDE(inode)->data);
}

static ssize_t fan_proc_write(struct file *file, const char __user *buf,
size_t count, loff_t *pos)
{
+ struct toshiba_acpi_dev *dev = PDE(file->f_path.dentry->d_inode)->data;
char cmd[42];
size_t len;
int value;
@@ -709,11 +699,11 @@ static ssize_t fan_proc_write(struct file *file, const char __user *buf,

if (sscanf(cmd, " force_on : %i", &value) == 1 &&
value >= 0 && value <= 1) {
- hci_write1(HCI_FAN, value, &hci_result);
+ hci_write1(dev, HCI_FAN, value, &hci_result);
if (hci_result != HCI_SUCCESS)
return -EFAULT;
else
- force_fan = value;
+ dev->force_fan = value;
} else {
return -EINVAL;
}
@@ -732,21 +722,22 @@ static const struct file_operations fan_proc_fops = {

static int keys_proc_show(struct seq_file *m, void *v)
{
+ struct toshiba_acpi_dev *dev = m->private;
u32 hci_result;
u32 value;

- if (!key_event_valid) {
- hci_read1(HCI_SYSTEM_EVENT, &value, &hci_result);
+ if (!dev->key_event_valid) {
+ hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result);
if (hci_result == HCI_SUCCESS) {
- key_event_valid = 1;
- last_key_event = value;
+ dev->key_event_valid = 1;
+ dev->last_key_event = value;
} else if (hci_result == HCI_EMPTY) {
/* better luck next time */
} else if (hci_result == HCI_NOT_SUPPORTED) {
/* This is a workaround for an unresolved issue on
* some machines where system events sporadically
* become disabled. */
- hci_write1(HCI_SYSTEM_EVENT, 1, &hci_result);
+ hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
pr_notice("Re-enabled hotkeys\n");
} else {
pr_err("Error reading hotkey status\n");
@@ -754,20 +745,21 @@ static int keys_proc_show(struct seq_file *m, void *v)
}
}

- seq_printf(m, "hotkey_ready: %d\n", key_event_valid);
- seq_printf(m, "hotkey: 0x%04x\n", last_key_event);
+ seq_printf(m, "hotkey_ready: %d\n", dev->key_event_valid);
+ seq_printf(m, "hotkey: 0x%04x\n", dev->last_key_event);
end:
return 0;
}

static int keys_proc_open(struct inode *inode, struct file *file)
{
- return single_open(file, keys_proc_show, NULL);
+ return single_open(file, keys_proc_show, PDE(inode)->data);
}

static ssize_t keys_proc_write(struct file *file, const char __user *buf,
size_t count, loff_t *pos)
{
+ struct toshiba_acpi_dev *dev = PDE(file->f_path.dentry->d_inode)->data;
char cmd[42];
size_t len;
int value;
@@ -778,7 +770,7 @@ static ssize_t keys_proc_write(struct file *file, const char __user *buf,
cmd[len] = '\0';

if (sscanf(cmd, " hotkey_ready : %i", &value) == 1 && value == 0) {
- key_event_valid = 0;
+ dev->key_event_valid = 0;
} else {
return -EINVAL;
}
@@ -820,13 +812,19 @@ static const struct file_operations version_proc_fops = {

#define PROC_TOSHIBA "toshiba"

-static void __init create_toshiba_proc_entries(void)
+static void __devinit
+create_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
{
- proc_create("lcd", S_IRUGO | S_IWUSR, toshiba_proc_dir, &lcd_proc_fops);
- proc_create("video", S_IRUGO | S_IWUSR, toshiba_proc_dir, &video_proc_fops);
- proc_create("fan", S_IRUGO | S_IWUSR, toshiba_proc_dir, &fan_proc_fops);
- proc_create("keys", S_IRUGO | S_IWUSR, toshiba_proc_dir, &keys_proc_fops);
- proc_create("version", S_IRUGO, toshiba_proc_dir, &version_proc_fops);
+ proc_create_data("lcd", S_IRUGO | S_IWUSR, toshiba_proc_dir,
+ &lcd_proc_fops, dev);
+ proc_create_data("video", S_IRUGO | S_IWUSR, toshiba_proc_dir,
+ &video_proc_fops, dev);
+ proc_create_data("fan", S_IRUGO | S_IWUSR, toshiba_proc_dir,
+ &fan_proc_fops, dev);
+ proc_create_data("keys", S_IRUGO | S_IWUSR, toshiba_proc_dir,
+ &keys_proc_fops, dev);
+ proc_create_data("version", S_IRUGO, toshiba_proc_dir,
+ &version_proc_fops, dev);
}

static void remove_toshiba_proc_entries(void)
@@ -843,224 +841,242 @@ static const struct backlight_ops toshiba_backlight_data = {
.update_status = set_lcd_status,
};

-static void toshiba_acpi_notify(acpi_handle handle, u32 event, void *context)
-{
- u32 hci_result, value;
-
- if (event != 0x80)
- return;
- do {
- hci_read1(HCI_SYSTEM_EVENT, &value, &hci_result);
- if (hci_result == HCI_SUCCESS) {
- if (value == 0x100)
- continue;
- /* act on key press; ignore key release */
- if (value & 0x80)
- continue;
-
- if (!sparse_keymap_report_event(toshiba_acpi.hotkey_dev,
- value, 1, true)) {
- pr_info("Unknown key %x\n",
- value);
- }
- } else if (hci_result == HCI_NOT_SUPPORTED) {
- /* This is a workaround for an unresolved issue on
- * some machines where system events sporadically
- * become disabled. */
- hci_write1(HCI_SYSTEM_EVENT, 1, &hci_result);
- pr_notice("Re-enabled hotkeys\n");
- }
- } while (hci_result != HCI_EMPTY);
-}
-
-static int __init toshiba_acpi_setup_keyboard(char *device)
+static int __devinit toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev,
+ char *device_path)
{
acpi_status status;
int error;

- status = acpi_get_handle(NULL, device, &toshiba_acpi.handle);
+ status = acpi_get_handle(NULL, device_path, &dev->handle);
if (ACPI_FAILURE(status)) {
pr_info("Unable to get notification device\n");
return -ENODEV;
}

- toshiba_acpi.hotkey_dev = input_allocate_device();
- if (!toshiba_acpi.hotkey_dev) {
+ dev->hotkey_dev = input_allocate_device();
+ if (!dev->hotkey_dev) {
pr_info("Unable to register input device\n");
return -ENOMEM;
}

- toshiba_acpi.hotkey_dev->name = "Toshiba input device";
- toshiba_acpi.hotkey_dev->phys = device;
- toshiba_acpi.hotkey_dev->id.bustype = BUS_HOST;
+ dev->hotkey_dev->name = "Toshiba input device";
+ dev->hotkey_dev->phys = device_path;
+ dev->hotkey_dev->id.bustype = BUS_HOST;

- error = sparse_keymap_setup(toshiba_acpi.hotkey_dev,
- toshiba_acpi_keymap, NULL);
+ error = sparse_keymap_setup(dev->hotkey_dev, toshiba_acpi_keymap, NULL);
if (error)
goto err_free_dev;

- status = acpi_install_notify_handler(toshiba_acpi.handle,
- ACPI_DEVICE_NOTIFY, toshiba_acpi_notify, NULL);
- if (ACPI_FAILURE(status)) {
- pr_info("Unable to install hotkey notification\n");
- error = -ENODEV;
- goto err_free_keymap;
- }
-
- status = acpi_evaluate_object(toshiba_acpi.handle, "ENAB", NULL, NULL);
+ status = acpi_evaluate_object(dev->handle, "ENAB", NULL, NULL);
if (ACPI_FAILURE(status)) {
pr_info("Unable to enable hotkeys\n");
error = -ENODEV;
- goto err_remove_notify;
+ goto err_free_keymap;
}

- error = input_register_device(toshiba_acpi.hotkey_dev);
+ error = input_register_device(dev->hotkey_dev);
if (error) {
pr_info("Unable to register input device\n");
- goto err_remove_notify;
+ goto err_free_keymap;
}

return 0;

- err_remove_notify:
- acpi_remove_notify_handler(toshiba_acpi.handle,
- ACPI_DEVICE_NOTIFY, toshiba_acpi_notify);
err_free_keymap:
- sparse_keymap_free(toshiba_acpi.hotkey_dev);
+ sparse_keymap_free(dev->hotkey_dev);
err_free_dev:
- input_free_device(toshiba_acpi.hotkey_dev);
- toshiba_acpi.hotkey_dev = NULL;
+ input_free_device(dev->hotkey_dev);
+ dev->hotkey_dev = NULL;
return error;
}

-static void toshiba_acpi_exit(void)
+static int toshiba_acpi_remove(struct acpi_device *acpi_dev, int type)
{
- if (toshiba_acpi.hotkey_dev) {
- acpi_remove_notify_handler(toshiba_acpi.handle,
- ACPI_DEVICE_NOTIFY, toshiba_acpi_notify);
- sparse_keymap_free(toshiba_acpi.hotkey_dev);
- input_unregister_device(toshiba_acpi.hotkey_dev);
- }
+ struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);

- if (toshiba_acpi.bt_rfk) {
- rfkill_unregister(toshiba_acpi.bt_rfk);
- rfkill_destroy(toshiba_acpi.bt_rfk);
- }
+ remove_toshiba_proc_entries();

- if (toshiba_backlight_device)
- backlight_device_unregister(toshiba_backlight_device);
+ if (dev->hotkey_dev) {
+ input_unregister_device(dev->hotkey_dev);
+ sparse_keymap_free(dev->hotkey_dev);
+ }

- remove_toshiba_proc_entries();
+ if (dev->bt_rfk) {
+ rfkill_unregister(dev->bt_rfk);
+ rfkill_destroy(dev->bt_rfk);
+ }

- if (toshiba_proc_dir)
- remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
+ if (dev->backlight_dev)
+ backlight_device_unregister(dev->backlight_dev);

- if (toshiba_acpi.illumination_installed)
- led_classdev_unregister(&toshiba_led);
+ if (dev->illumination_installed)
+ led_classdev_unregister(&dev->led_dev);

- platform_device_unregister(toshiba_acpi.p_dev);
+ kfree(dev);

- return;
+ return 0;
}

-static int __init toshiba_acpi_init(void)
+static int __devinit toshiba_acpi_add(struct acpi_device *acpi_dev)
{
+ struct toshiba_acpi_dev *dev;
u32 hci_result;
bool bt_present;
int ret = 0;
struct backlight_properties props;

- if (acpi_disabled)
- return -ENODEV;
+ pr_info("Toshiba Laptop ACPI Extras version %s\n",
+ TOSHIBA_ACPI_VERSION);
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return -ENOMEM;
+ dev->acpi_dev = acpi_dev;
+ acpi_dev->driver_data = dev;

/* simple device detection: look for HCI method */
if (is_valid_acpi_path(TOSH_INTERFACE_1 GHCI_METHOD)) {
- method_hci = TOSH_INTERFACE_1 GHCI_METHOD;
- if (toshiba_acpi_setup_keyboard(TOSH_INTERFACE_1))
+ dev->method_hci = TOSH_INTERFACE_1 GHCI_METHOD;
+ if (toshiba_acpi_setup_keyboard(dev, TOSH_INTERFACE_1))
pr_info("Unable to activate hotkeys\n");
} else if (is_valid_acpi_path(TOSH_INTERFACE_2 GHCI_METHOD)) {
- method_hci = TOSH_INTERFACE_2 GHCI_METHOD;
- if (toshiba_acpi_setup_keyboard(TOSH_INTERFACE_2))
+ dev->method_hci = TOSH_INTERFACE_2 GHCI_METHOD;
+ if (toshiba_acpi_setup_keyboard(dev, TOSH_INTERFACE_2))
pr_info("Unable to activate hotkeys\n");
- } else
- return -ENODEV;
-
- pr_info("Toshiba Laptop ACPI Extras version %s\n",
- TOSHIBA_ACPI_VERSION);
- pr_info(" HCI method: %s\n", method_hci);
-
- mutex_init(&toshiba_acpi.mutex);
-
- toshiba_acpi.p_dev = platform_device_register_simple("toshiba_acpi",
- -1, NULL, 0);
- if (IS_ERR(toshiba_acpi.p_dev)) {
- ret = PTR_ERR(toshiba_acpi.p_dev);
- pr_err("unable to register platform device\n");
- toshiba_acpi.p_dev = NULL;
- toshiba_acpi_exit();
- return ret;
+ } else {
+ ret = -ENODEV;
+ goto error;
}

- force_fan = 0;
- key_event_valid = 0;
+ pr_info("HCI method: %s\n", dev->method_hci);
+
+ mutex_init(&dev->mutex);

/* enable event fifo */
- hci_write1(HCI_SYSTEM_EVENT, 1, &hci_result);
+ hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);

- toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir);
- if (!toshiba_proc_dir) {
- toshiba_acpi_exit();
- return -ENODEV;
- } else {
- create_toshiba_proc_entries();
- }
+ create_toshiba_proc_entries(dev);

props.type = BACKLIGHT_PLATFORM;
props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
- toshiba_backlight_device = backlight_device_register("toshiba",
- &toshiba_acpi.p_dev->dev,
- NULL,
- &toshiba_backlight_data,
- &props);
- if (IS_ERR(toshiba_backlight_device)) {
- ret = PTR_ERR(toshiba_backlight_device);
+ dev->backlight_dev = backlight_device_register("toshiba",
+ &acpi_dev->dev,
+ dev,
+ &toshiba_backlight_data,
+ &props);
+ if (IS_ERR(dev->backlight_dev)) {
+ ret = PTR_ERR(dev->backlight_dev);

pr_err("Could not register toshiba backlight device\n");
- toshiba_backlight_device = NULL;
- toshiba_acpi_exit();
- return ret;
+ dev->backlight_dev = NULL;
+ goto error;
}

/* Register rfkill switch for Bluetooth */
- if (hci_get_bt_present(&bt_present) == HCI_SUCCESS && bt_present) {
- toshiba_acpi.bt_rfk = rfkill_alloc(toshiba_acpi.bt_name,
- &toshiba_acpi.p_dev->dev,
- RFKILL_TYPE_BLUETOOTH,
- &toshiba_rfk_ops,
- &toshiba_acpi);
- if (!toshiba_acpi.bt_rfk) {
+ if (hci_get_bt_present(dev, &bt_present) == HCI_SUCCESS && bt_present) {
+ dev->bt_rfk = rfkill_alloc("Toshiba Bluetooth",
+ &acpi_dev->dev,
+ RFKILL_TYPE_BLUETOOTH,
+ &toshiba_rfk_ops,
+ dev);
+ if (!dev->bt_rfk) {
pr_err("unable to allocate rfkill device\n");
- toshiba_acpi_exit();
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto error;
}

- ret = rfkill_register(toshiba_acpi.bt_rfk);
+ ret = rfkill_register(dev->bt_rfk);
if (ret) {
pr_err("unable to register rfkill device\n");
- rfkill_destroy(toshiba_acpi.bt_rfk);
- toshiba_acpi_exit();
- return ret;
+ rfkill_destroy(dev->bt_rfk);
+ goto error;
}
}

- toshiba_acpi.illumination_installed = 0;
- if (toshiba_illumination_available()) {
- if (!led_classdev_register(&(toshiba_acpi.p_dev->dev),
- &toshiba_led))
- toshiba_acpi.illumination_installed = 1;
+ if (toshiba_illumination_available(dev)) {
+ dev->led_dev.name = "toshiba::illumination";
+ dev->led_dev.max_brightness = 1;
+ dev->led_dev.brightness_set = toshiba_illumination_set;
+ dev->led_dev.brightness_get = toshiba_illumination_get;
+ if (!led_classdev_register(&acpi_dev->dev, &dev->led_dev))
+ dev->illumination_installed = 1;
}

return 0;
+
+error:
+ toshiba_acpi_remove(acpi_dev, 0);
+ return ret;
+}
+
+static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event)
+{
+ struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
+ u32 hci_result, value;
+
+ if (event != 0x80)
+ return;
+ do {
+ hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result);
+ if (hci_result == HCI_SUCCESS) {
+ if (value == 0x100)
+ continue;
+ /* act on key press; ignore key release */
+ if (value & 0x80)
+ continue;
+
+ if (!sparse_keymap_report_event(dev->hotkey_dev,
+ value, 1, true)) {
+ pr_info("Unknown key %x\n",
+ value);
+ }
+ } else if (hci_result == HCI_NOT_SUPPORTED) {
+ /* This is a workaround for an unresolved issue on
+ * some machines where system events sporadically
+ * become disabled. */
+ hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
+ pr_notice("Re-enabled hotkeys\n");
+ }
+ } while (hci_result != HCI_EMPTY);
+}
+
+
+static struct acpi_driver toshiba_acpi_driver = {
+ .name = "Toshiba ACPI driver",
+ .owner = THIS_MODULE,
+ .ids = toshiba_device_ids,
+ .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
+ .ops = {
+ .add = toshiba_acpi_add,
+ .remove = toshiba_acpi_remove,
+ .notify = toshiba_acpi_notify,
+ },
+};
+
+static int __init toshiba_acpi_init(void)
+{
+ int ret;
+
+ toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir);
+ if (!toshiba_proc_dir) {
+ pr_err("Unable to create proc dir " PROC_TOSHIBA "\n");
+ return -ENODEV;
+ }
+
+ ret = acpi_bus_register_driver(&toshiba_acpi_driver);
+ if (ret) {
+ pr_err("Failed to register ACPI driver: %d\n", ret);
+ remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
+ }
+
+ return ret;
+}
+
+static void __exit toshiba_acpi_exit(void)
+{
+ acpi_bus_unregister_driver(&toshiba_acpi_driver);
+ if (toshiba_proc_dir)
+ remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
}

module_init(toshiba_acpi_init);
--
1.7.4.1
--
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