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Lines 414-419
acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level)
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| 414 |
struct acpi_object_list args = { 1, &arg0 }; |
414 |
struct acpi_object_list args = { 1, &arg0 }; |
| 415 |
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415 |
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| 416 |
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416 |
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417 |
if (device->cap._BCL) { |
| 418 |
int i; |
| 419 |
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| 420 |
/* validate through the list of available levels as |
| 421 |
requested in ACPI spec section B.6.3 */ |
| 422 |
for (i = 0; i < device->brightness->count; i++) |
| 423 |
if (level == device->brightness->levels[i]) |
| 424 |
break; |
| 425 |
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| 426 |
if (i == device->brightness->count) { |
| 427 |
/* didn't find a valid level */ |
| 428 |
return_ACPI_STATUS(AE_BAD_PARAMETER); |
| 429 |
} |
| 430 |
} |
| 431 |
|
| 417 |
arg0.integer.value = level; |
432 |
arg0.integer.value = level; |
| 418 |
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| 419 |
if (device->cap._BCM) |
434 |
if (device->cap._BCM) |
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Lines 898-904
acpi_video_device_write_brightness(struct file *file,
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| 898 |
struct acpi_video_device *dev = m->private; |
913 |
struct acpi_video_device *dev = m->private; |
| 899 |
char str[5] = { 0 }; |
914 |
char str[5] = { 0 }; |
| 900 |
unsigned int level = 0; |
915 |
unsigned int level = 0; |
| 901 |
int i; |
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| 902 |
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916 |
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| 903 |
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917 |
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| 904 |
if (!dev || !dev->brightness || count + 1 > sizeof str) |
918 |
if (!dev || !dev->brightness || count + 1 > sizeof str) |
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Lines 913-926
acpi_video_device_write_brightness(struct file *file,
Link Here
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| 913 |
if (level > 100) |
927 |
if (level > 100) |
| 914 |
return -EFAULT; |
928 |
return -EFAULT; |
| 915 |
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929 |
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| 916 |
/* validate through the list of available levels */ |
930 |
if (ACPI_SUCCESS(acpi_video_device_lcd_set_level(dev, level))) |
| 917 |
for (i = 0; i < dev->brightness->count; i++) |
931 |
dev->brightness->curr = level; |
| 918 |
if (level == dev->brightness->levels[i]) { |
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| 919 |
if (ACPI_SUCCESS |
| 920 |
(acpi_video_device_lcd_set_level(dev, level))) |
| 921 |
dev->brightness->curr = level; |
| 922 |
break; |
| 923 |
} |
| 924 |
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932 |
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| 925 |
return count; |
933 |
return count; |
| 926 |
} |
934 |
} |
| 927 |
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