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Subject[PATCH 30/42] Staging: pcc-acpi: update to latest version
Date
Import the changes from the upstream driver into this version to keep
things up to date.

Cc: Yokota Hiroshi <yokota@netlab.cs.tsukuba.ac.jp>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
drivers/staging/pcc-acpi/pcc-acpi.c | 540 ++++++++++++++++++++---------------
1 files changed, 309 insertions(+), 231 deletions(-)

diff --git a/drivers/staging/pcc-acpi/pcc-acpi.c b/drivers/staging/pcc-acpi/pcc-acpi.c
index ffda32a..e44181e 100644
--- a/drivers/staging/pcc-acpi/pcc-acpi.c
+++ b/drivers/staging/pcc-acpi/pcc-acpi.c
@@ -94,20 +94,21 @@
*
*/

-#define ACPI_PCC_VERSION "0.9"
+#define ACPI_PCC_VERSION "0.9+hy"

-#include <linux/version.h>
+#include <acpi/acpi_bus.h>
+#include <acpi/acpi_drivers.h>
+#include <asm/uaccess.h>
+#include <linux/ctype.h>
+#include <linux/init.h>
+#include <linux/input.h>
#include <linux/kernel.h>
#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/types.h>
#include <linux/proc_fs.h>
-#include <linux/ctype.h>
#include <linux/seq_file.h>
-#include <asm/uaccess.h>
-#include <acpi/acpi_bus.h>
-#include <acpi/acpi_drivers.h>
-#include <linux/input.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/version.h>


/*************************************************************************
@@ -152,10 +153,10 @@ static int _open_func_name_(struct inode *inode, struct file *file) \
#endif

#define _COMPONENT ACPI_HOTKEY_COMPONENT
-ACPI_MODULE_NAME("pcc_acpi")
+ACPI_MODULE_NAME("pcc_acpi");

-MODULE_AUTHOR("Hiroshi Miura");
-MODULE_DESCRIPTION("ACPI HotKey driver for Panasonic Lets Note laptops");
+MODULE_AUTHOR("Hiroshi Miura, Hiroshi Yokota");
+MODULE_DESCRIPTION("ACPI HotKey driver for Panasonic Let's Note laptops");
MODULE_LICENSE("GPL");

#define LOGPREFIX "pcc_acpi: "
@@ -182,7 +183,7 @@ MODULE_LICENSE("GPL");
* definitions for /proc/ interface
*
*******************************************************************/
-#define ACPI_PCC_DRIVER_NAME "PCC Extra Driver"
+#define ACPI_PCC_DRIVER_NAME "pcc_acpi"
#define ACPI_PCC_DEVICE_NAME "PCCExtra"
#define ACPI_PCC_CLASS "pcc"
#define PROC_PCC ACPI_PCC_CLASS
@@ -196,6 +197,12 @@ MODULE_LICENSE("GPL");

#define PROC_STR_MAX_LEN 8

+#define BUS_PCC_HOTKEY BUS_I8042 /*0x1a*/ /* FIXME: BUS_I8042? */
+
+/* Fn+F4/F5 confricts with Shift+F1/F2 */
+/* This hack avoids key number confrict */
+#define PCC_KEYINPUT_MODE (0)
+
/* LCD_TYPEs: 0 = Normal, 1 = Semi-transparent
ENV_STATEs: Normal temp=0x01, High temp=0x81, N/A=0x00
*/
@@ -209,27 +216,32 @@ enum SINF_BITS { SINF_NUM_BATTERIES = 0,
SINF_STICKY_KEY = 0x80,
};

-static int acpi_pcc_hotkey_add(struct acpi_device *device);
-static int acpi_pcc_hotkey_remove(struct acpi_device *device, int type);
-static int acpi_pcc_hotkey_resume(struct acpi_device *device);
-
-static const struct acpi_device_id pcc_device_ids[] = {
+static struct acpi_device_id pcc_device_ids[] = {
{"MAT0012", 0},
{"MAT0013", 0},
{"MAT0018", 0},
{"MAT0019", 0},
- {"", 0},
+ {"", 0},
};
MODULE_DEVICE_TABLE(acpi, pcc_device_ids);

+
+static int __devinit acpi_pcc_hotkey_add(struct acpi_device *device);
+static int __devexit acpi_pcc_hotkey_remove(struct acpi_device *device, int type);
+static int acpi_pcc_hotkey_resume(struct acpi_device *device);
+
+
static struct acpi_driver acpi_pcc_driver = {
.name = ACPI_PCC_DRIVER_NAME,
.class = ACPI_PCC_CLASS,
.ids = pcc_device_ids,
.ops = {
.add = acpi_pcc_hotkey_add,
- .remove = acpi_pcc_hotkey_remove,
+ .remove = __devexit_p(acpi_pcc_hotkey_remove),
+#ifdef CONFIG_PM
+ /*.suspend = acpi_pcc_hotkey_suspend,*/
.resume = acpi_pcc_hotkey_resume,
+#endif
},
};

@@ -248,9 +260,12 @@ struct pcc_keyinput {
int key_mode;
};

-/* --------------------------------------------------------------------------
+/* *************************************************************************
+ Hotkey driver core
+ ************************************************************************* */
+/* -------------------------------------------------------------------------
method access functions
- -------------------------------------------------------------------------- */
+ ------------------------------------------------------------------------- */
static int acpi_pcc_write_sset(struct acpi_hotkey *hotkey, int func, int val)
{
union acpi_object in_objs[] = {
@@ -263,13 +278,13 @@ static int acpi_pcc_write_sset(struct acpi_hotkey *hotkey, int func, int val)
.count = ARRAY_SIZE(in_objs),
.pointer = in_objs,
};
- acpi_status status = AE_OK;
+ acpi_status status;

ACPI_FUNCTION_TRACE("acpi_pcc_write_sset");

status = acpi_evaluate_object(hotkey->handle, METHOD_HKEY_SSET, &params, NULL);

- return_VALUE(status == AE_OK);
+ return_VALUE(status == AE_OK ? AE_OK : AE_ERROR);
}

static inline int acpi_pcc_get_sqty(struct acpi_device *device)
@@ -301,19 +316,20 @@ static int acpi_pcc_retrieve_biosdata(struct acpi_hotkey *hotkey, u32* sinf)
status = acpi_evaluate_object(hotkey->handle, METHOD_HKEY_SINF, 0 , &buffer);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "evaluation error HKEY.SINF\n"));
- return_VALUE(0);
+ status = AE_ERROR;
+ return_VALUE(status);
}

hkey = buffer.pointer;
if (!hkey || (hkey->type != ACPI_TYPE_PACKAGE)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid HKEY.SINF\n"));
- goto end;
+ goto free_buffer;
}

if (hotkey->num_sifr < hkey->package.count) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "SQTY reports bad SINF length\n"));
status = AE_ERROR;
- goto end;
+ goto free_buffer;
}

for (i = 0; i < hkey->package.count; i++) {
@@ -322,59 +338,54 @@ static int acpi_pcc_retrieve_biosdata(struct acpi_hotkey *hotkey, u32* sinf)
sinf[i] = element->integer.value;
} else {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid HKEY.SINF data\n"));
+ status = AE_ERROR;
+ break;
}
}
sinf[hkey->package.count] = -1;

-end:
+ free_buffer:
kfree(buffer.pointer);
- return_VALUE(status == AE_OK);
+ return_VALUE(status == AE_OK ? AE_OK : AE_ERROR);
}

static int acpi_pcc_read_sinf_field(struct seq_file *seq, int field)
{
struct acpi_hotkey *hotkey = (struct acpi_hotkey *) seq->private;
- u32* sinf = kmalloc(sizeof(u32) * (hotkey->num_sifr + 1), GFP_KERNEL);
+ u32 sinf[hotkey->num_sifr + 1];

ACPI_FUNCTION_TRACE("acpi_pcc_read_sinf_field");

- if (!sinf) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Couldn't allocate %li bytes\n",
- sizeof(u32) * hotkey->num_sifr));
- return_VALUE(0);
- }
-
- if (acpi_pcc_retrieve_biosdata(hotkey, sinf)) {
+ if (ACPI_SUCCESS(acpi_pcc_retrieve_biosdata(hotkey, sinf))) {
seq_printf(seq, "%u\n", sinf[field]);
} else {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Couldn't retrieve BIOS data\n"));
}

- kfree(sinf);
- return_VALUE(0);
+ return_VALUE(AE_OK);
}

-/* --------------------------------------------------------------------------
+/* -------------------------------------------------------------------------
user interface functions
- -------------------------------------------------------------------------- */
+ ------------------------------------------------------------------------- */
/* read methods */
/* Sinf read methods */
#define PCC_SINF_READ_F(_name_, FUNC) \
static int _name_ (struct seq_file *seq, void *offset) \
{ \
- return acpi_pcc_read_sinf_field(seq, (FUNC)); \
+ return_VALUE(ACPI_SUCCESS(acpi_pcc_read_sinf_field(seq, (FUNC))) ? 0 : -EINVAL); \
}

-PCC_SINF_READ_F(acpi_pcc_numbatteries_show, SINF_NUM_BATTERIES);
-PCC_SINF_READ_F(acpi_pcc_lcdtype_show, SINF_LCD_TYPE);
+PCC_SINF_READ_F(acpi_pcc_numbatteries_show, SINF_NUM_BATTERIES);
+PCC_SINF_READ_F(acpi_pcc_lcdtype_show, SINF_LCD_TYPE);
PCC_SINF_READ_F(acpi_pcc_ac_brightness_max_show, SINF_AC_MAX_BRIGHT);
PCC_SINF_READ_F(acpi_pcc_ac_brightness_min_show, SINF_AC_MIN_BRIGHT);
-PCC_SINF_READ_F(acpi_pcc_ac_brightness_show, SINF_AC_CUR_BRIGHT);
+PCC_SINF_READ_F(acpi_pcc_ac_brightness_show, SINF_AC_CUR_BRIGHT);
PCC_SINF_READ_F(acpi_pcc_dc_brightness_max_show, SINF_DC_MAX_BRIGHT);
PCC_SINF_READ_F(acpi_pcc_dc_brightness_min_show, SINF_DC_MIN_BRIGHT);
-PCC_SINF_READ_F(acpi_pcc_dc_brightness_show, SINF_DC_CUR_BRIGHT);
-PCC_SINF_READ_F(acpi_pcc_brightness_show, SINF_AC_CUR_BRIGHT);
-PCC_SINF_READ_F(acpi_pcc_mute_show, SINF_MUTE);
+PCC_SINF_READ_F(acpi_pcc_dc_brightness_show, SINF_DC_CUR_BRIGHT);
+PCC_SINF_READ_F(acpi_pcc_brightness_show, SINF_AC_CUR_BRIGHT);
+PCC_SINF_READ_F(acpi_pcc_mute_show, SINF_MUTE);

static int acpi_pcc_sticky_key_show(struct seq_file *seq, void *offset)
{
@@ -383,7 +394,7 @@ static int acpi_pcc_sticky_key_show(struct seq_file *seq, void *offset)
ACPI_FUNCTION_TRACE("acpi_pcc_sticky_key_show");

if (!hotkey || !hotkey->device) {
- return_VALUE(0);
+ return_VALUE(-EINVAL);
}

seq_printf(seq, "%d\n", hotkey->sticky_mode);
@@ -410,8 +421,9 @@ static int acpi_pcc_version_show(struct seq_file *seq, void *offset)

ACPI_FUNCTION_TRACE("acpi_pcc_version_show");

- if (!hotkey || !hotkey->device)
- return 0;
+ if (!hotkey || !hotkey->device) {
+ return_VALUE(-EINVAL);
+ }

seq_printf(seq, "%s version %s\n", ACPI_PCC_DRIVER_NAME, ACPI_PCC_VERSION);
seq_printf(seq, "%li functions\n", hotkey->num_sifr);
@@ -421,27 +433,28 @@ static int acpi_pcc_version_show(struct seq_file *seq, void *offset)

/* write methods */
static ssize_t acpi_pcc_write_single_flag (struct file *file,
- const char __user *buffer,
- size_t count,
- int sinf_func)
+ const char __user *buffer,
+ size_t count,
+ int sinf_func)
{
struct seq_file *seq = file->private_data;
struct acpi_hotkey *hotkey = seq->private;
char write_string[PROC_STR_MAX_LEN];
- u32 val;
+ u32 val;

ACPI_FUNCTION_TRACE("acpi_pcc_write_single_flag");

if (!hotkey || (count > sizeof(write_string) - 1)) {
return_VALUE(-EINVAL);
- }
+ }

if (copy_from_user(write_string, buffer, count)) {
return_VALUE(-EFAULT);
- }
+ }
write_string[count] = '\0';

- if (sscanf(write_string, "%i", &val) == 1 && (val == 0 || val == 1)) {
+ if ((sscanf(write_string, "%3i", &val) == 1) &&
+ (val == 0 || val == 1)) {
acpi_pcc_write_sset(hotkey, sinf_func, val);
}

@@ -457,53 +470,51 @@ static unsigned long acpi_pcc_write_brightness(struct file *file, const char __u
struct acpi_hotkey *hotkey = (struct acpi_hotkey *)seq->private;
char write_string[PROC_STR_MAX_LEN];
u32 bright;
- u32* sinf = kmalloc(sizeof(u32) * (hotkey->num_sifr + 1), GFP_KERNEL);
+ u32 sinf[hotkey->num_sifr + 1];

ACPI_FUNCTION_TRACE("acpi_pcc_write_brightness");

- if (!hotkey || (count > sizeof(write_string) - 1))
+ if (!hotkey || (count > sizeof(write_string) - 1)) {
return_VALUE(-EINVAL);
-
- if (!sinf) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Couldn't allocate %li bytes\n",
- sizeof(u32) * hotkey->num_sifr));
- return_VALUE(-EFAULT);
}

- if (copy_from_user(write_string, buffer, count))
+ if (copy_from_user(write_string, buffer, count)) {
return_VALUE(-EFAULT);
+ }

write_string[count] = '\0';

- if (!acpi_pcc_retrieve_biosdata(hotkey, sinf)) {
+ if (ACPI_FAILURE(acpi_pcc_retrieve_biosdata(hotkey, sinf))) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Couldn't retrieve BIOS data\n"));
goto end;
}

- if (sscanf(write_string, "%i", &bright) == 1 &&
- bright >= sinf[min_index] && bright <= sinf[max_index]) {
- acpi_pcc_write_sset(hotkey, cur_index, bright);
+ if ((sscanf(write_string, "%4i", &bright) == 1) &&
+ (bright >= sinf[min_index] ) &&
+ (bright <= sinf[max_index] )) {
+ acpi_pcc_write_sset(hotkey, cur_index, bright);
}

end:
- kfree(sinf);
return_VALUE(count);
}

static ssize_t acpi_pcc_write_ac_brightness(struct file *file, const char __user *buffer,
size_t count, loff_t *ppos)
{
- return acpi_pcc_write_brightness(file, buffer, count, SINF_AC_MIN_BRIGHT,
- SINF_AC_MAX_BRIGHT,
- SINF_AC_CUR_BRIGHT);
+ return_VALUE(acpi_pcc_write_brightness(file, buffer, count,
+ SINF_AC_MIN_BRIGHT,
+ SINF_AC_MAX_BRIGHT,
+ SINF_AC_CUR_BRIGHT));
}

static ssize_t acpi_pcc_write_dc_brightness(struct file *file, const char __user *buffer,
size_t count, loff_t *ppos)
{
- return acpi_pcc_write_brightness(file, buffer, count, SINF_DC_MIN_BRIGHT,
- SINF_DC_MAX_BRIGHT,
- SINF_DC_CUR_BRIGHT);
+ return_VALUE(acpi_pcc_write_brightness(file, buffer, count,
+ SINF_DC_MIN_BRIGHT,
+ SINF_DC_MAX_BRIGHT,
+ SINF_DC_CUR_BRIGHT));
}

static ssize_t acpi_pcc_write_no_brightness(struct file *file, const char __user *buffer,
@@ -518,14 +529,36 @@ static ssize_t acpi_pcc_write_mute (struct file *file,
const char __user *buffer,
size_t count, loff_t *ppos)
{
- return acpi_pcc_write_single_flag(file, buffer, count, SINF_MUTE);
+ return_VALUE(acpi_pcc_write_single_flag(file, buffer, count, SINF_MUTE));
}

static ssize_t acpi_pcc_write_sticky_key (struct file *file,
const char __user *buffer,
size_t count, loff_t *ppos)
{
- return acpi_pcc_write_single_flag(file, buffer, count, SINF_STICKY_KEY);
+ struct seq_file *seq = (struct seq_file *)file->private_data;
+ struct acpi_hotkey *hotkey = (struct acpi_hotkey *)seq->private;
+ char write_string[PROC_STR_MAX_LEN];
+ int mode;
+
+ ACPI_FUNCTION_TRACE("acpi_pcc_write_sticky_key");
+
+ if (!hotkey || (count > sizeof(write_string) - 1)) {
+ return_VALUE(-EINVAL);
+ }
+
+ if (copy_from_user(write_string, buffer, count)) {
+ return_VALUE(-EFAULT);
+ }
+ write_string[count] = '\0';
+
+ if ((sscanf(write_string, "%3i", &mode) == 1) &&
+ (mode == 0 || mode == 1)) {
+ acpi_pcc_write_sset(hotkey, SINF_STICKY_KEY, mode);
+ hotkey->sticky_mode = mode;
+ }
+
+ return_VALUE(count);
}

static ssize_t acpi_pcc_write_keyinput(struct file *file, const char __user *buffer,
@@ -539,25 +572,28 @@ static ssize_t acpi_pcc_write_keyinput(struct file *file, const char __user *buf

ACPI_FUNCTION_TRACE("acpi_pcc_write_keyinput");

- if (!hotkey || (count > sizeof(write_string) - 1))
+ if (!hotkey || (count > (sizeof(write_string) - 1))) {
return_VALUE(-EINVAL);
+ }

- if (copy_from_user(write_string, buffer, count))
+ if (copy_from_user(write_string, buffer, count)) {
return_VALUE(-EFAULT);
+ }

write_string[count] = '\0';

- if (sscanf(write_string, "%i", &key_mode) == 1 && (key_mode == 0 || key_mode == 1)) {
- keyinput = (struct pcc_keyinput *)input_get_drvdata(hotkey->input_dev);
+ if ((sscanf(write_string, "%4i", &key_mode) == 1) &&
+ (key_mode == 0 || key_mode == 1)) {
+ keyinput = input_get_drvdata(hotkey->input_dev);
keyinput->key_mode = key_mode;
}

return_VALUE(count);
}

-/* --------------------------------------------------------------------------
+/* -------------------------------------------------------------------------
hotkey driver
- -------------------------------------------------------------------------- */
+ ------------------------------------------------------------------------- */
static void acpi_pcc_generete_keyinput(struct acpi_hotkey *hotkey)
{
struct input_dev *hotk_input_dev = hotkey->input_dev;
@@ -640,38 +676,38 @@ void acpi_pcc_hotkey_notify(acpi_handle handle, u32 event, void *data)
return_VOID;
}

-/* --------------------------------------------------------------------------
- FS Interface (/proc)
- -------------------------------------------------------------------------- */
+/* *************************************************************************
+ FS Interface (/proc)
+ ************************************************************************* */
/* oepn proc file fs*/
-SEQ_OPEN_FS(acpi_pcc_dc_brightness_open_fs, acpi_pcc_dc_brightness_show);
-SEQ_OPEN_FS(acpi_pcc_numbatteries_open_fs, acpi_pcc_numbatteries_show);
-SEQ_OPEN_FS(acpi_pcc_lcdtype_open_fs, acpi_pcc_lcdtype_show);
+SEQ_OPEN_FS(acpi_pcc_dc_brightness_open_fs, acpi_pcc_dc_brightness_show);
+SEQ_OPEN_FS(acpi_pcc_numbatteries_open_fs, acpi_pcc_numbatteries_show);
+SEQ_OPEN_FS(acpi_pcc_lcdtype_open_fs, acpi_pcc_lcdtype_show);
SEQ_OPEN_FS(acpi_pcc_ac_brightness_max_open_fs, acpi_pcc_ac_brightness_max_show);
-SEQ_OPEN_FS(acpi_pcc_ac_brightness_min_open_fs, acpi_pcc_ac_brightness_min_show);
-SEQ_OPEN_FS(acpi_pcc_ac_brightness_open_fs, acpi_pcc_ac_brightness_show);
+SEQ_OPEN_FS(acpi_pcc_ac_brightness_min_open_fs, acpi_pcc_ac_brightness_min_show);
+SEQ_OPEN_FS(acpi_pcc_ac_brightness_open_fs, acpi_pcc_ac_brightness_show);
SEQ_OPEN_FS(acpi_pcc_dc_brightness_max_open_fs, acpi_pcc_dc_brightness_max_show);
SEQ_OPEN_FS(acpi_pcc_dc_brightness_min_open_fs, acpi_pcc_dc_brightness_min_show);
-SEQ_OPEN_FS(acpi_pcc_brightness_open_fs, acpi_pcc_brightness_show);
-SEQ_OPEN_FS(acpi_pcc_mute_open_fs, acpi_pcc_mute_show);
-SEQ_OPEN_FS(acpi_pcc_version_open_fs, acpi_pcc_version_show);
-SEQ_OPEN_FS(acpi_pcc_keyinput_open_fs, acpi_pcc_keyinput_show);
-SEQ_OPEN_FS(acpi_pcc_sticky_key_open_fs, acpi_pcc_sticky_key_show);
+SEQ_OPEN_FS(acpi_pcc_brightness_open_fs, acpi_pcc_brightness_show);
+SEQ_OPEN_FS(acpi_pcc_mute_open_fs, acpi_pcc_mute_show);
+SEQ_OPEN_FS(acpi_pcc_version_open_fs, acpi_pcc_version_show);
+SEQ_OPEN_FS(acpi_pcc_keyinput_open_fs, acpi_pcc_keyinput_show);
+SEQ_OPEN_FS(acpi_pcc_sticky_key_open_fs, acpi_pcc_sticky_key_show);

typedef struct file_operations fops_t;
-static fops_t acpi_pcc_numbatteries_fops = SEQ_FILEOPS_R (acpi_pcc_numbatteries_open_fs);
-static fops_t acpi_pcc_lcdtype_fops = SEQ_FILEOPS_R (acpi_pcc_lcdtype_open_fs);
-static fops_t acpi_pcc_mute_fops = SEQ_FILEOPS_RW(acpi_pcc_mute_open_fs, acpi_pcc_write_mute);
-static fops_t acpi_pcc_ac_brightness_fops = SEQ_FILEOPS_RW(acpi_pcc_ac_brightness_open_fs, acpi_pcc_write_ac_brightness);
-static fops_t acpi_pcc_ac_brightness_max_fops = SEQ_FILEOPS_R(acpi_pcc_ac_brightness_max_open_fs);
-static fops_t acpi_pcc_ac_brightness_min_fops = SEQ_FILEOPS_R(acpi_pcc_ac_brightness_min_open_fs);
-static fops_t acpi_pcc_dc_brightness_fops = SEQ_FILEOPS_RW(acpi_pcc_dc_brightness_open_fs, acpi_pcc_write_dc_brightness);
-static fops_t acpi_pcc_dc_brightness_max_fops = SEQ_FILEOPS_R(acpi_pcc_dc_brightness_max_open_fs);
-static fops_t acpi_pcc_dc_brightness_min_fops = SEQ_FILEOPS_R(acpi_pcc_dc_brightness_min_open_fs);
-static fops_t acpi_pcc_brightness_fops = SEQ_FILEOPS_RW(acpi_pcc_brightness_open_fs, acpi_pcc_write_no_brightness);
-static fops_t acpi_pcc_sticky_key_fops = SEQ_FILEOPS_RW(acpi_pcc_sticky_key_open_fs, acpi_pcc_write_sticky_key);
-static fops_t acpi_pcc_keyinput_fops = SEQ_FILEOPS_RW(acpi_pcc_keyinput_open_fs, acpi_pcc_write_keyinput);
-static fops_t acpi_pcc_version_fops = SEQ_FILEOPS_R (acpi_pcc_version_open_fs);
+static fops_t acpi_pcc_numbatteries_fops = SEQ_FILEOPS_R (acpi_pcc_numbatteries_open_fs);
+static fops_t acpi_pcc_lcdtype_fops = SEQ_FILEOPS_R (acpi_pcc_lcdtype_open_fs);
+static fops_t acpi_pcc_mute_fops = SEQ_FILEOPS_RW(acpi_pcc_mute_open_fs, acpi_pcc_write_mute);
+static fops_t acpi_pcc_ac_brightness_fops = SEQ_FILEOPS_RW(acpi_pcc_ac_brightness_open_fs, acpi_pcc_write_ac_brightness);
+static fops_t acpi_pcc_ac_brightness_max_fops = SEQ_FILEOPS_R (acpi_pcc_ac_brightness_max_open_fs);
+static fops_t acpi_pcc_ac_brightness_min_fops = SEQ_FILEOPS_R (acpi_pcc_ac_brightness_min_open_fs);
+static fops_t acpi_pcc_dc_brightness_fops = SEQ_FILEOPS_RW(acpi_pcc_dc_brightness_open_fs, acpi_pcc_write_dc_brightness);
+static fops_t acpi_pcc_dc_brightness_max_fops = SEQ_FILEOPS_R (acpi_pcc_dc_brightness_max_open_fs);
+static fops_t acpi_pcc_dc_brightness_min_fops = SEQ_FILEOPS_R (acpi_pcc_dc_brightness_min_open_fs);
+static fops_t acpi_pcc_brightness_fops = SEQ_FILEOPS_RW(acpi_pcc_brightness_open_fs, acpi_pcc_write_no_brightness);
+static fops_t acpi_pcc_sticky_key_fops = SEQ_FILEOPS_RW(acpi_pcc_sticky_key_open_fs, acpi_pcc_write_sticky_key);
+static fops_t acpi_pcc_keyinput_fops = SEQ_FILEOPS_RW(acpi_pcc_keyinput_open_fs, acpi_pcc_write_keyinput);
+static fops_t acpi_pcc_version_fops = SEQ_FILEOPS_R (acpi_pcc_version_open_fs);

typedef struct _ProcItem
{
@@ -681,37 +717,35 @@ typedef struct _ProcItem
} ProcItem;

/* Note: These functions map *exactly* to the SINF/SSET functions */
-ProcItem pcc_proc_items_sifr[] =
-{
- { "num_batteries", &acpi_pcc_numbatteries_fops, S_IRUGO },
- { "lcd_type", &acpi_pcc_lcdtype_fops, S_IRUGO },
+ProcItem acpi_pcc_proc_items_sifr[] = {
+ { "num_batteries", &acpi_pcc_numbatteries_fops, S_IRUGO },
+ { "lcd_type", &acpi_pcc_lcdtype_fops, S_IRUGO },
{ "ac_brightness_max" , &acpi_pcc_ac_brightness_max_fops,S_IRUGO },
{ "ac_brightness_min" , &acpi_pcc_ac_brightness_min_fops,S_IRUGO },
- { "ac_brightness" , &acpi_pcc_ac_brightness_fops, S_IFREG | S_IRUGO | S_IWUSR },
+ { "ac_brightness" , &acpi_pcc_ac_brightness_fops, S_IFREG | S_IRUGO | S_IWUSR },
{ "dc_brightness_max" , &acpi_pcc_dc_brightness_max_fops,S_IRUGO },
{ "dc_brightness_min" , &acpi_pcc_dc_brightness_min_fops,S_IRUGO },
- { "dc_brightness" , &acpi_pcc_dc_brightness_fops, S_IFREG | S_IRUGO | S_IWUSR },
- { "brightness" , &acpi_pcc_brightness_fops, S_IFREG | S_IRUGO | S_IWUSR },
- { "mute", &acpi_pcc_mute_fops, S_IFREG | S_IRUGO | S_IWUSR },
+ { "dc_brightness" , &acpi_pcc_dc_brightness_fops, S_IFREG | S_IRUGO | S_IWUSR },
+ { "brightness" , &acpi_pcc_brightness_fops, S_IFREG | S_IRUGO | S_IWUSR },
+ { "mute", &acpi_pcc_mute_fops, S_IFREG | S_IRUGO | S_IWUSR },
{ NULL, NULL, 0 },
};

-ProcItem pcc_proc_items[] =
-{
+ProcItem acpi_pcc_proc_items[] = {
{ "sticky_key", &acpi_pcc_sticky_key_fops, S_IFREG | S_IRUGO | S_IWUSR },
- { "keyinput", &acpi_pcc_keyinput_fops, S_IFREG | S_IRUGO | S_IWUSR },
- { "version", &acpi_pcc_version_fops, S_IRUGO },
+ { "keyinput", &acpi_pcc_keyinput_fops, S_IFREG | S_IRUGO | S_IWUSR },
+ { "version", &acpi_pcc_version_fops, S_IRUGO },
{ NULL, NULL, 0 },
};

-static int acpi_pcc_add_device(struct acpi_device *device,
- ProcItem *proc_items,
- int num)
+static int __devinit acpi_pcc_add_device(struct acpi_device *device,
+ ProcItem *proc_items,
+ int num)
{
+ struct acpi_hotkey *hotkey = (struct acpi_hotkey*)acpi_driver_data(device);
struct proc_dir_entry* proc;
ProcItem* item;
int i;
- struct acpi_hotkey *hotkey = (struct acpi_hotkey*)acpi_driver_data(device);

for (item = proc_items, i = 0; item->name && i < num; ++item, ++i) {
proc = create_proc_entry(item->name, item->flag, hotkey->proc_dir_entry);
@@ -724,16 +758,16 @@ static int acpi_pcc_add_device(struct acpi_device *device,
item--;
remove_proc_entry(item->name, hotkey->proc_dir_entry);
}
- return -ENODEV;
+ return_VALUE(-ENODEV);
}
}
- return 0;
+ return_VALUE(0);
}

-static int acpi_pcc_proc_init(struct acpi_device *device)
+static int __devinit acpi_pcc_proc_init(struct acpi_device *device)
{
- struct proc_dir_entry* acpi_pcc_dir;
- struct acpi_hotkey *hotkey = (struct acpi_hotkey*)acpi_driver_data(device);
+ struct proc_dir_entry *acpi_pcc_dir;
+ struct acpi_hotkey *hotkey = (struct acpi_hotkey*)acpi_driver_data(device);
acpi_status status;

ACPI_FUNCTION_TRACE("acpi_pcc_proc_init");
@@ -748,8 +782,8 @@ static int acpi_pcc_proc_init(struct acpi_device *device)
acpi_pcc_dir->owner = THIS_MODULE;
hotkey->proc_dir_entry = acpi_pcc_dir;

- status = acpi_pcc_add_device(device, pcc_proc_items_sifr, hotkey->num_sifr);
- status |= acpi_pcc_add_device(device, pcc_proc_items, sizeof(pcc_proc_items)/sizeof(ProcItem));
+ status = acpi_pcc_add_device(device, acpi_pcc_proc_items_sifr, hotkey->num_sifr);
+ status |= acpi_pcc_add_device(device, acpi_pcc_proc_items, ARRAY_SIZE(acpi_pcc_proc_items));
if (unlikely(status)) {
remove_proc_entry(PROC_PCC, acpi_root_dir);
hotkey->proc_dir_entry = NULL;
@@ -759,9 +793,9 @@ static int acpi_pcc_proc_init(struct acpi_device *device)
return_VALUE(status);
}

-static void acpi_pcc_remove_device(struct acpi_device *device,
- ProcItem *proc_items,
- int num)
+static void __devexit acpi_pcc_remove_device(struct acpi_device *device,
+ ProcItem *proc_items,
+ int num)
{
struct acpi_hotkey *hotkey = (struct acpi_hotkey*)acpi_driver_data(device);
ProcItem* item;
@@ -771,131 +805,165 @@ static void acpi_pcc_remove_device(struct acpi_device *device,
remove_proc_entry(item->name, hotkey->proc_dir_entry);
}

- return;
+ return_VOID;
+}
+
+/* *************************************************************************
+ Power Management
+ ************************************************************************* */
+#ifdef CONFIG_PM
+static int acpi_pcc_hotkey_resume(struct acpi_device *device)
+{
+ struct acpi_hotkey *hotkey = acpi_driver_data(device);
+ acpi_status status = AE_OK;
+
+ ACPI_FUNCTION_TRACE("acpi_pcc_hotkey_resume");
+
+ if (device == NULL || hotkey == NULL) { return_VALUE(-EINVAL); }
+
+ if (hotkey->num_sifr != 0) {
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Sticky mode restore: %d\n", hotkey->sticky_mode));
+
+ status = acpi_pcc_write_sset(hotkey, SINF_STICKY_KEY, hotkey->sticky_mode);
+ }
+ if (status != AE_OK) { return_VALUE(-EINVAL); }
+
+ return_VALUE(0);
}
+#endif

-/* --------------------------------------------------------------------------
- input init
- -------------------------------------------------------------------------- */
-static int acpi_pcc_init_input(struct acpi_hotkey *hotkey)
+/* *************************************************************************
+ Module init/remove
+ ************************************************************************* */
+/* -------------------------------------------------------------------------
+ input
+ ------------------------------------------------------------------------- */
+static int __devinit acpi_pcc_init_input(struct acpi_hotkey *hotkey)
{
- struct input_dev *hotk_input_dev;
+ struct input_dev *hotk_input_dev;
struct pcc_keyinput *pcc_keyinput;
+ int error;

ACPI_FUNCTION_TRACE("acpi_pcc_init_input");

-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15)
hotk_input_dev = input_allocate_device();
- if (!hotk_input_dev) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Couldn't allocate input device for hotkey"));
- return_VALUE(-ENOMEM);
- }
-#else
- hotk_input_dev = kcalloc(1, sizeof(struct input_dev),GFP_KERNEL);
if (hotk_input_dev == NULL) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Couldn't allocate mem for hotkey"));
- return_VALUE(-ENOMEM);
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Couldn't allocate input device for hotkey"));
+ goto err_input;
}
-#endif

- pcc_keyinput = kcalloc(1,sizeof(struct pcc_keyinput),GFP_KERNEL);
+ pcc_keyinput = kcalloc(1, sizeof(struct pcc_keyinput), GFP_KERNEL);

if (pcc_keyinput == NULL) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Couldn't allocate mem for hotkey"));
- input_unregister_device(hotk_input_dev);
- return_VALUE(-ENOMEM);
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Couldn't allocate mem for private data"));
+ goto err_pcc;
}

hotk_input_dev->evbit[0] = BIT(EV_KEY);

set_bit(KEY_BRIGHTNESSDOWN, hotk_input_dev->keybit);
- set_bit(KEY_BRIGHTNESSUP, hotk_input_dev->keybit);
- set_bit(KEY_MUTE, hotk_input_dev->keybit);
- set_bit(KEY_VOLUMEDOWN, hotk_input_dev->keybit);
- set_bit(KEY_VOLUMEUP, hotk_input_dev->keybit);
- set_bit(KEY_SLEEP, hotk_input_dev->keybit);
- set_bit(KEY_BATT, hotk_input_dev->keybit);
- set_bit(KEY_SUSPEND, hotk_input_dev->keybit);
-
- hotk_input_dev->name = ACPI_PCC_DRIVER_NAME;
- hotk_input_dev->phys = ACPI_PCC_INPUT_PHYS;
- hotk_input_dev->id.bustype = 0x1a; /* XXX FIXME: BUS_I8042? */
- hotk_input_dev->id.vendor = 0x0001;
+ set_bit(KEY_BRIGHTNESSUP, hotk_input_dev->keybit);
+ set_bit(KEY_MUTE, hotk_input_dev->keybit);
+ set_bit(KEY_VOLUMEDOWN, hotk_input_dev->keybit);
+ set_bit(KEY_VOLUMEUP, hotk_input_dev->keybit);
+ set_bit(KEY_SLEEP, hotk_input_dev->keybit);
+ set_bit(KEY_BATT, hotk_input_dev->keybit);
+ set_bit(KEY_SUSPEND, hotk_input_dev->keybit);
+
+ hotk_input_dev->name = ACPI_PCC_DRIVER_NAME;
+ hotk_input_dev->phys = ACPI_PCC_INPUT_PHYS;
+ hotk_input_dev->id.bustype = BUS_PCC_HOTKEY;
+ hotk_input_dev->id.vendor = 0x0001;
hotk_input_dev->id.product = 0x0001;
hotk_input_dev->id.version = 0x0100;

- pcc_keyinput->key_mode = 1; /* default on */
- pcc_keyinput->hotkey = hotkey;
+ pcc_keyinput->key_mode = PCC_KEYINPUT_MODE;
+ pcc_keyinput->hotkey = hotkey;

input_set_drvdata(hotk_input_dev, pcc_keyinput);

hotkey->input_dev = hotk_input_dev;

+ error = input_register_device(hotk_input_dev);

- input_register_device(hotk_input_dev);
+ if (error) {
+ goto err_pcc;
+ }

return_VALUE(0);
-}

-/* --------------------------------------------------------------------------
- module init
- -------------------------------------------------------------------------- */
+ err_pcc:
+ input_unregister_device(hotk_input_dev);
+ err_input:
+ return_VALUE(-ENOMEM);
+}

-static int acpi_pcc_hotkey_resume(struct acpi_device *device)
+static void __devexit acpi_pcc_remove_input(struct acpi_hotkey *hotkey)
{
- struct acpi_hotkey *hotkey = acpi_driver_data(device);
- acpi_status status = AE_OK;
+ struct input_dev *hotk_input_dev;
+ struct pcc_keyinput *pcc_keyinput;

- ACPI_FUNCTION_TRACE("acpi_pcc_hotkey_resume");
+ ACPI_FUNCTION_TRACE("acpi_pcc_remove_input");

- if (device == NULL || hotkey == NULL) { return_VALUE(-EINVAL); }
+ if (hotkey == NULL) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Can't free memory"));
+ return_VOID;
+ }

- ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Sticky mode restore: %d\n", hotkey->sticky_mode));
+ hotk_input_dev = hotkey->input_dev;
+ pcc_keyinput = input_get_drvdata(hotk_input_dev);

- status = acpi_pcc_write_sset(hotkey, SINF_STICKY_KEY, hotkey->sticky_mode);
+ input_unregister_device(hotk_input_dev);

- return_VALUE(status == AE_OK ? 0 : -EINVAL);
+ kfree(pcc_keyinput);
}

-static int acpi_pcc_hotkey_add (struct acpi_device *device)
+/* -------------------------------------------------------------------------
+ ACPI
+ ------------------------------------------------------------------------- */
+static int __devinit acpi_pcc_hotkey_add (struct acpi_device *device)
{
acpi_status status = AE_OK;
struct acpi_hotkey *hotkey = NULL;
- int num_sifr, result;
+ int sifr_status, num_sifr, result;

ACPI_FUNCTION_TRACE("acpi_pcc_hotkey_add");

- if (!device) {
+ if (device == NULL) {
return_VALUE(-EINVAL);
}

- num_sifr = acpi_pcc_get_sqty(device);
+ sifr_status = acpi_pcc_get_sqty(device);

- if (num_sifr > 255) {
+ if (sifr_status > 255) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "num_sifr too large"));
return_VALUE(-ENODEV);
}

- hotkey = kmalloc(sizeof(struct acpi_hotkey), GFP_KERNEL);
- if (!hotkey) {
+ if (sifr_status < 0) {
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "not support SQTY"));
+ num_sifr = 0;
+ } else {
+ num_sifr = sifr_status;
+ }
+
+ hotkey = kcalloc(1, sizeof(struct acpi_hotkey), GFP_KERNEL);
+ if (hotkey == NULL) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Couldn't allocate mem for hotkey"));
return_VALUE(-ENOMEM);
}

- memset(hotkey, 0, sizeof(struct acpi_hotkey));
-
- hotkey->device = device;
- hotkey->handle = device->handle;
+ hotkey->device = device;
+ hotkey->handle = device->handle;
hotkey->num_sifr = num_sifr;
acpi_driver_data(device) = hotkey;
- strcpy(acpi_device_name(device), ACPI_PCC_DEVICE_NAME);
+ strcpy(acpi_device_name(device), ACPI_PCC_DEVICE_NAME);
strcpy(acpi_device_class(device), ACPI_PCC_CLASS);

- status = acpi_install_notify_handler (
- hotkey->handle,
- ACPI_DEVICE_NOTIFY,
- acpi_pcc_hotkey_notify,
- hotkey);
+ status = acpi_install_notify_handler(hotkey->handle,
+ ACPI_DEVICE_NOTIFY,
+ acpi_pcc_hotkey_notify,
+ hotkey);

if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error installing notify handler\n"));
@@ -904,7 +972,7 @@ static int acpi_pcc_hotkey_add (struct acpi_device *device)
}

result = acpi_pcc_init_input(hotkey);
- if (result) {
+ if (result != 0) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error installing keyinput handler\n"));
kfree(hotkey);
return_VALUE(result);
@@ -913,62 +981,72 @@ static int acpi_pcc_hotkey_add (struct acpi_device *device)
return_VALUE(acpi_pcc_proc_init(device));
}

-static int __init acpi_pcc_init(void)
-{
- int result = 0;
-
- ACPI_FUNCTION_TRACE("acpi_pcc_init");
-
- if (acpi_disabled) {
- return_VALUE(-ENODEV);
- }
-
- result = acpi_bus_register_driver(&acpi_pcc_driver);
- if (result < 0) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error registering hotkey driver\n"));
- return_VALUE(-ENODEV);
- }
-
- return_VALUE(0);
-}
-
-module_init(acpi_pcc_init);
-
-static int acpi_pcc_hotkey_remove(struct acpi_device *device, int type)
+static int __devexit acpi_pcc_hotkey_remove(struct acpi_device *device, int type)
{
acpi_status status = AE_OK;
struct acpi_hotkey *hotkey = acpi_driver_data(device);

ACPI_FUNCTION_TRACE("acpi_pcc_hotkey_remove");

- if (!device || !hotkey)
+ if (!device || !hotkey) {
return_VALUE(-EINVAL);
+ }

if (hotkey->proc_dir_entry) {
- acpi_pcc_remove_device(device, pcc_proc_items_sifr, hotkey->num_sifr);
- acpi_pcc_remove_device(device, pcc_proc_items, sizeof(pcc_proc_items)/sizeof(ProcItem));
+ acpi_pcc_remove_device(device, acpi_pcc_proc_items_sifr, hotkey->num_sifr);
+ acpi_pcc_remove_device(device, acpi_pcc_proc_items, ARRAY_SIZE(acpi_pcc_proc_items));
remove_proc_entry(PROC_PCC, acpi_root_dir);
}

status = acpi_remove_notify_handler(hotkey->handle,
ACPI_DEVICE_NOTIFY, acpi_pcc_hotkey_notify);

- if (ACPI_FAILURE(status))
+ if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error removing notify handler\n"));
+ }

- input_unregister_device(hotkey->input_dev);
-
- kfree(hotkey);
+ acpi_pcc_remove_input(hotkey);
+ if (hotkey != NULL) {
+ kfree(hotkey);
+ }
return_VALUE(status == AE_OK);
}

+/* *********************************************************************
+ Module entry point
+ ********************************************************************* */
+static int __init acpi_pcc_init(void)
+{
+ int result;
+
+ ACPI_FUNCTION_TRACE("acpi_pcc_init");
+
+ printk(KERN_INFO LOGPREFIX "loading...\n");
+
+ if (acpi_disabled) {
+ printk(KERN_INFO LOGPREFIX "ACPI disabled.\n");
+ return_VALUE(-ENODEV);
+ }
+
+ result = acpi_bus_register_driver(&acpi_pcc_driver);
+ if (result < 0) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error registering hotkey driver\n"));
+ return_VALUE(-ENODEV);
+ }
+
+ return_VALUE(result);
+}
+
static void __exit acpi_pcc_exit(void)
{
ACPI_FUNCTION_TRACE("acpi_pcc_exit");

+ printk(KERN_INFO LOGPREFIX "unloading...\n");
+
acpi_bus_unregister_driver(&acpi_pcc_driver);

return_VOID;
}

+module_init(acpi_pcc_init);
module_exit(acpi_pcc_exit);
--
1.6.0.2


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