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Commit e1a949c1 authored by Azael Avalos's avatar Azael Avalos Committed by Darren Hart
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toshiba_acpi: Refactor *{get, set} functions return value 



This patch refactors the return value of the driver *{get, set}
functions, since the driver default error value is -EIO.

All the functions now check for TOS_FAILURE, TOS_NOT_SUPPORTED and
TOS_SUCCESS.

On TOS_FAILURE a pr_err message is printed informing the user of the
error (no change was made to this, except the check was added to the
functions not checking for this).

On TOS_NOT_SUPPORTED we now return -ENODEV immediately (some
functions were returning -EIO and some other were not checking)

On TOS_SUCCESS* we now return 0 (as a side effect, a new success value
was added, since some functions return one instead of zero to
indicate success).

As a special case, the LED functions now check for *FAILURE on
*set, and check for TOS_FAILURE and TOS_SUCCESS on *get with their
"default" return value set to LED_OFF.

Also the {lcd, video}_proc* functions were adapted to reflect these
changes to their parent HCI functions.

Signed-off-by: default avatarAzael Avalos <coproscefalo@gmail.com>
Signed-off-by: default avatarDarren Hart <dvhart@linux.intel.com>
parent 0409cbce

drivers/platform/x86/toshiba_acpi.c

+104 −73
Original line number Diff line number Diff line
@@ -93,6 +93,7 @@ MODULE_LICENSE("GPL"); 


/* Return codes */

#define TOS_SUCCESS			0x0000

#define TOS_SUCCESS2			0x0001

#define TOS_OPEN_CLOSE_OK		0x0044

#define TOS_FAILURE			0x1000

#define TOS_NOT_SUPPORTED		0x8000
@@ -469,7 +470,8 @@ static void toshiba_illumination_set(struct led_classdev *cdev, 
{

	struct toshiba_acpi_dev *dev = container_of(cdev,

			struct toshiba_acpi_dev, led_dev);

	u32 state, result;

	u32 result;

	u32 state;



	/* First request : initialize communication. */

	if (!sci_open(dev))
@@ -503,7 +505,7 @@ static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev) 
	if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {

		pr_err("ACPI call for illumination failed\n");

		return LED_OFF;

	} else if (result == TOS_NOT_SUPPORTED) {

	} else if (result != TOS_SUCCESS) {

		return LED_OFF;

	}
@@ -565,7 +567,7 @@ static int toshiba_kbd_illum_status_set(struct toshiba_acpi_dev *dev, u32 time) 
		return -ENODEV;

	}



	return 0;

	return result == TOS_SUCCESS ? 0 : -EIO;

}



static int toshiba_kbd_illum_status_get(struct toshiba_acpi_dev *dev, u32 *time)
@@ -584,21 +586,22 @@ static int toshiba_kbd_illum_status_get(struct toshiba_acpi_dev *dev, u32 *time) 
		return -ENODEV;

	}



	return 0;

	return result == TOS_SUCCESS ? 0 : -EIO;

}



static enum led_brightness toshiba_kbd_backlight_get(struct led_classdev *cdev)

{

	struct toshiba_acpi_dev *dev = container_of(cdev,

			struct toshiba_acpi_dev, kbd_led);

	u32 state, result;

	u32 result;

	u32 state;



	/* Check the keyboard backlight state */

	result = hci_read(dev, HCI_KBD_ILLUMINATION, &state);

	if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {

		pr_err("ACPI call to get the keyboard backlight failed\n");

		return LED_OFF;

	} else if (result == TOS_NOT_SUPPORTED) {

	} else if (result != TOS_SUCCESS) {

		return LED_OFF;

	}
@@ -610,7 +613,8 @@ static void toshiba_kbd_backlight_set(struct led_classdev *cdev, 
{

	struct toshiba_acpi_dev *dev = container_of(cdev,

			struct toshiba_acpi_dev, kbd_led);

	u32 state, result;

	u32 result;

	u32 state;



	/* Set the keyboard backlight state */

	state = brightness ? 1 : 0;
@@ -640,7 +644,7 @@ static int toshiba_touchpad_set(struct toshiba_acpi_dev *dev, u32 state) 
		return -ENODEV;

	}



	return 0;

	return result == TOS_SUCCESS ? 0 : -EIO;

}



static int toshiba_touchpad_get(struct toshiba_acpi_dev *dev, u32 *state)
@@ -659,7 +663,7 @@ static int toshiba_touchpad_get(struct toshiba_acpi_dev *dev, u32 *state) 
		return -ENODEV;

	}



	return 0;

	return result == TOS_SUCCESS ? 0 : -EIO;

}



/* Eco Mode support */
@@ -709,6 +713,8 @@ toshiba_eco_mode_get_status(struct led_classdev *cdev) 
	if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {

		pr_err("ACPI call to get ECO led failed\n");

		return LED_OFF;

	} else if (out[0] != TOS_SUCCESS) {

		return LED_OFF;

	}



	return out[2] ? LED_FULL : LED_OFF;
@@ -769,14 +775,17 @@ static int toshiba_accelerometer_get(struct toshiba_acpi_dev *dev, 
	if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {

		pr_err("ACPI call to query the accelerometer failed\n");

		return -EIO;

	}



	} else if (out[0] == TOS_NOT_SUPPORTED) {

		return -ENODEV;

	} else if (out[0] == TOS_SUCCESS) {

		*xy = out[2];

		*z = out[4];



		return 0;

	}



	return -EIO;

}



/* Sleep (Charge and Music) utilities support */

static void toshiba_usb_sleep_charge_available(struct toshiba_acpi_dev *dev)

{
@@ -835,7 +844,7 @@ static int toshiba_usb_sleep_charge_get(struct toshiba_acpi_dev *dev, 
		return -EIO;

	}



	return 0;

	return result == TOS_SUCCESS ? 0 : -EIO;

}



static int toshiba_usb_sleep_charge_set(struct toshiba_acpi_dev *dev,
@@ -857,7 +866,7 @@ static int toshiba_usb_sleep_charge_set(struct toshiba_acpi_dev *dev, 
		return -EIO;

	}



	return 0;

	return result == TOS_SUCCESS ? 0 : -EIO;

}



static int toshiba_sleep_functions_status_get(struct toshiba_acpi_dev *dev,
@@ -880,13 +889,14 @@ static int toshiba_sleep_functions_status_get(struct toshiba_acpi_dev *dev, 
		return -ENODEV;

	} else if (out[0] == TOS_INPUT_DATA_ERROR) {

		return -EIO;

	}



	} else if (out[0] == TOS_SUCCESS) {

		*mode = out[2];



		return 0;

	}



	return -EIO;

}



static int toshiba_sleep_functions_status_set(struct toshiba_acpi_dev *dev,

					      u32 mode)

{
@@ -910,7 +920,7 @@ static int toshiba_sleep_functions_status_set(struct toshiba_acpi_dev *dev, 
		return -EIO;

	}



	return 0;

	return out[0] == TOS_SUCCESS ? 0 : -EIO;

}



static int toshiba_usb_rapid_charge_get(struct toshiba_acpi_dev *dev,
@@ -932,13 +942,14 @@ static int toshiba_usb_rapid_charge_get(struct toshiba_acpi_dev *dev, 
	} else if (out[0] == TOS_NOT_SUPPORTED ||

		   out[0] == TOS_INPUT_DATA_ERROR) {

		return -ENODEV;

	}



	} else if (out[0] == TOS_SUCCESS || out[0] == TOS_SUCCESS2) {

		*state = out[2];



		return 0;

	}



	return -EIO;

}



static int toshiba_usb_rapid_charge_set(struct toshiba_acpi_dev *dev,

					u32 state)

{
@@ -962,7 +973,7 @@ static int toshiba_usb_rapid_charge_set(struct toshiba_acpi_dev *dev, 
		return -EIO;

	}



	return 0;

	return (out[0] == TOS_SUCCESS || out[0] == TOS_SUCCESS2) ? 0 : -EIO;

}



static int toshiba_usb_sleep_music_get(struct toshiba_acpi_dev *dev, u32 *state)
@@ -983,7 +994,7 @@ static int toshiba_usb_sleep_music_get(struct toshiba_acpi_dev *dev, u32 *state) 
		return -EIO;

	}



	return 0;

	return result = TOS_SUCCESS ? 0 : -EIO;

}



static int toshiba_usb_sleep_music_set(struct toshiba_acpi_dev *dev, u32 state)
@@ -1004,7 +1015,7 @@ static int toshiba_usb_sleep_music_set(struct toshiba_acpi_dev *dev, u32 state) 
		return -EIO;

	}



	return 0;

	return result == TOS_SUCCESS ? 0 : -EIO;

}



/* Keyboard function keys */
@@ -1024,7 +1035,7 @@ static int toshiba_function_keys_get(struct toshiba_acpi_dev *dev, u32 *mode) 
		return -ENODEV;

	}



	return 0;

	return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;

}



static int toshiba_function_keys_set(struct toshiba_acpi_dev *dev, u32 mode)
@@ -1043,7 +1054,7 @@ static int toshiba_function_keys_set(struct toshiba_acpi_dev *dev, u32 mode) 
		return -ENODEV;

	}



	return 0;

	return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;

}



/* Panel Power ON */
@@ -1065,7 +1076,7 @@ static int toshiba_panel_power_on_get(struct toshiba_acpi_dev *dev, u32 *state) 
		return -EIO;

	}



	return 0;

	return result == TOS_SUCCESS ? 0 : -EIO;

}



static int toshiba_panel_power_on_set(struct toshiba_acpi_dev *dev, u32 state)
@@ -1086,7 +1097,7 @@ static int toshiba_panel_power_on_set(struct toshiba_acpi_dev *dev, u32 state) 
		return -EIO;

	}



	return 0;

	return result == TOS_SUCCESS ? 0 : -EIO;

}



/* USB Three */
@@ -1108,7 +1119,7 @@ static int toshiba_usb_three_get(struct toshiba_acpi_dev *dev, u32 *state) 
		return -EIO;

	}



	return 0;

	return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;

}



static int toshiba_usb_three_set(struct toshiba_acpi_dev *dev, u32 state)
@@ -1129,7 +1140,7 @@ static int toshiba_usb_three_set(struct toshiba_acpi_dev *dev, u32 state) 
		return -EIO;

	}



	return 0;

	return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;

}



/* Hotkey Event type */
@@ -1146,26 +1157,37 @@ static int toshiba_hotkey_event_type_get(struct toshiba_acpi_dev *dev, 
		return -EIO;

	} else if (out[0] == TOS_NOT_SUPPORTED) {

		return -ENODEV;

	}



	} else if (out[0] == TOS_SUCCESS) {

		*type = out[3];



		return 0;

	}



	return -EIO;

}



/* Transflective Backlight */

static int get_tr_backlight_status(struct toshiba_acpi_dev *dev, u32 *status)

{

	u32 hci_result = hci_read(dev, HCI_TR_BACKLIGHT, status);

	u32 result = hci_read(dev, HCI_TR_BACKLIGHT, status);



	return hci_result == TOS_SUCCESS ? 0 : -EIO;

	if (result == TOS_FAILURE)

		pr_err("ACPI call to get Transflective Backlight failed\n");

	else if (result == TOS_NOT_SUPPORTED)

		return -ENODEV;



	return result == TOS_SUCCESS ? 0 : -EIO;

}



static int set_tr_backlight_status(struct toshiba_acpi_dev *dev, u32 status)

{

	u32 hci_result = hci_write(dev, HCI_TR_BACKLIGHT, !status);

	u32 result = hci_write(dev, HCI_TR_BACKLIGHT, !status);



	if (result == TOS_FAILURE)

		pr_err("ACPI call to set Transflective Backlight failed\n");

	else if (result == TOS_NOT_SUPPORTED)

		return -ENODEV;



	return hci_result == TOS_SUCCESS ? 0 : -EIO;

	return result == TOS_SUCCESS ? 0 : -EIO;

}



static struct proc_dir_entry *toshiba_proc_dir;
@@ -1173,7 +1195,7 @@ static struct proc_dir_entry *toshiba_proc_dir; 
/* LCD Brightness */

static int __get_lcd_brightness(struct toshiba_acpi_dev *dev)

{

	u32 hci_result;

	u32 result;

	u32 value;

	int brightness = 0;
@@ -1187,8 +1209,12 @@ static int __get_lcd_brightness(struct toshiba_acpi_dev *dev) 
		brightness++;

	}



	hci_result = hci_read(dev, HCI_LCD_BRIGHTNESS, &value);

	if (hci_result == TOS_SUCCESS)

	result = hci_read(dev, HCI_LCD_BRIGHTNESS, &value);

	if (result == TOS_FAILURE)

		pr_err("ACPI call to get LCD Brightness failed\n");

	else if (result == TOS_NOT_SUPPORTED)

		return -ENODEV;

	if (result == TOS_SUCCESS)

		return brightness + (value >> HCI_LCD_BRIGHTNESS_SHIFT);



	return -EIO;
@@ -1204,8 +1230,8 @@ static int get_lcd_brightness(struct backlight_device *bd) 
static int lcd_proc_show(struct seq_file *m, void *v)

{

	struct toshiba_acpi_dev *dev = m->private;

	int value;

	int levels;

	int value;



	if (!dev->backlight_dev)

		return -ENODEV;
@@ -1219,6 +1245,7 @@ static int lcd_proc_show(struct seq_file *m, void *v) 
	}



	pr_err("Error reading LCD brightness\n");



	return -EIO;

}
@@ -1229,7 +1256,7 @@ static int lcd_proc_open(struct inode *inode, struct file *file) 


static int set_lcd_brightness(struct toshiba_acpi_dev *dev, int value)

{

	u32 hci_result;

	u32 result;



	if (dev->tr_backlight_supported) {

		int ret = set_tr_backlight_status(dev, !value);
@@ -1241,8 +1268,13 @@ static int set_lcd_brightness(struct toshiba_acpi_dev *dev, int value) 
	}



	value = value << HCI_LCD_BRIGHTNESS_SHIFT;

	hci_result = hci_write(dev, HCI_LCD_BRIGHTNESS, value);

	return hci_result == TOS_SUCCESS ? 0 : -EIO;

	result = hci_write(dev, HCI_LCD_BRIGHTNESS, value);

	if (result == TOS_FAILURE)

		pr_err("ACPI call to set LCD Brightness failed\n");

	else if (result == TOS_NOT_SUPPORTED)

		return -ENODEV;



	return result == TOS_SUCCESS ? 0 : -EIO;

}



static int set_lcd_status(struct backlight_device *bd)
@@ -1258,24 +1290,22 @@ static ssize_t lcd_proc_write(struct file *file, const char __user *buf, 
	struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));

	char cmd[42];

	size_t len;

	int value;

	int ret;

	int levels = dev->backlight_dev->props.max_brightness + 1;

	int value;



	len = min(count, sizeof(cmd) - 1);

	if (copy_from_user(cmd, buf, len))

		return -EFAULT;

	cmd[len] = '\0';



	if (sscanf(cmd, " brightness : %i", &value) == 1 &&

	    value >= 0 && value < levels) {

		ret = set_lcd_brightness(dev, value);

		if (ret == 0)

			ret = count;

	} else {

		ret = -EINVAL;

	}

	return ret;

	if (sscanf(cmd, " brightness : %i", &value) != 1 &&

	    value < 0 && value > levels)

		return -EINVAL;



	if (set_lcd_brightness(dev, value))

		return -EIO;



	return count;

}



static const struct file_operations lcd_proc_fops = {
@@ -1287,22 +1317,25 @@ static const struct file_operations lcd_proc_fops = { 
	.write		= lcd_proc_write,

};



/* Video-Out */

static int get_video_status(struct toshiba_acpi_dev *dev, u32 *status)

{

	u32 hci_result;

	u32 result = hci_read(dev, HCI_VIDEO_OUT, status);



	if (result == TOS_FAILURE)

		pr_err("ACPI call to get Video-Out failed\n");

	else if (result == TOS_NOT_SUPPORTED)

		return -ENODEV;



	hci_result = hci_read(dev, HCI_VIDEO_OUT, status);

	return hci_result == TOS_SUCCESS ? 0 : -EIO;

	return result == TOS_SUCCESS ? 0 : -EIO;

}



static int video_proc_show(struct seq_file *m, void *v)

{

	struct toshiba_acpi_dev *dev = m->private;

	u32 value;

	int ret;



	ret = get_video_status(dev, &value);

	if (!ret) {

	if (!get_video_status(dev, &value)) {

		int is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0;

		int is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0;

		int is_tv = (value & HCI_VIDEO_OUT_TV) ? 1 : 0;
@@ -1310,9 +1343,10 @@ static int video_proc_show(struct seq_file *m, void *v) 
		seq_printf(m, "lcd_out:                 %d\n", is_lcd);

		seq_printf(m, "crt_out:                 %d\n", is_crt);

		seq_printf(m, "tv_out:                  %d\n", is_tv);

		return 0;

	}



	return ret;

	return -EIO;

}



static int video_proc_open(struct inode *inode, struct file *file)
@@ -1324,13 +1358,14 @@ 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_DATA(file_inode(file));

	char *cmd, *buffer;

	int ret;

	int value;

	char *buffer;

	char *cmd;

	int remain = count;

	int lcd_out = -1;

	int crt_out = -1;

	int tv_out = -1;

	int value;

	int ret;

	u32 video_out;



	cmd = kmalloc(count + 1, GFP_KERNEL);
@@ -1382,7 +1417,7 @@ static ssize_t video_proc_write(struct file *file, const char __user *buf, 
			ret = write_acpi_int(METHOD_VIDEO_OUT, new_video_out);

	}



	return ret ? ret : count;

	return ret ? -EIO : count;

}



static const struct file_operations video_proc_fops = {
@@ -1403,10 +1438,8 @@ static int get_fan_status(struct toshiba_acpi_dev *dev, u32 *status) 
		pr_err("ACPI call to get Fan status failed\n");

	else if (result == TOS_NOT_SUPPORTED)

		return -ENODEV;

	else if (result == TOS_SUCCESS)

		return 0;



	return -EIO;

	return result == TOS_SUCCESS ? 0 : -EIO;

}



static int set_fan_status(struct toshiba_acpi_dev *dev, u32 status)
@@ -1417,10 +1450,8 @@ static int set_fan_status(struct toshiba_acpi_dev *dev, u32 status) 
		pr_err("ACPI call to set Fan status failed\n");

	else if (result == TOS_NOT_SUPPORTED)

		return -ENODEV;

	else if (result == TOS_SUCCESS)

		return 0;



	return -EIO;

	return result == TOS_SUCCESS ? 0 : -EIO;

}



static int fan_proc_show(struct seq_file *m, void *v)