diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-class-extcon')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-extcon | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-extcon b/Documentation/ABI/testing/sysfs-class-extcon index 20ab361bd8c6..57a726232912 100644 --- a/Documentation/ABI/testing/sysfs-class-extcon +++ b/Documentation/ABI/testing/sysfs-class-extcon | |||
| @@ -13,7 +13,7 @@ Description: | |||
| 13 | accessory cables have such capability. For example, | 13 | accessory cables have such capability. For example, |
| 14 | the 30-pin port of Nuri board (/arch/arm/mach-exynos) | 14 | the 30-pin port of Nuri board (/arch/arm/mach-exynos) |
| 15 | may have both HDMI and Charger attached, or analog audio, | 15 | may have both HDMI and Charger attached, or analog audio, |
| 16 | video, and USB cables attached simulteneously. | 16 | video, and USB cables attached simultaneously. |
| 17 | 17 | ||
| 18 | If there are cables mutually exclusive with each other, | 18 | If there are cables mutually exclusive with each other, |
| 19 | such binary relations may be expressed with extcon_dev's | 19 | such binary relations may be expressed with extcon_dev's |
| @@ -35,7 +35,7 @@ Description: | |||
| 35 | The /sys/class/extcon/.../state shows and stores the cable | 35 | The /sys/class/extcon/.../state shows and stores the cable |
| 36 | attach/detach information of the corresponding extcon object. | 36 | attach/detach information of the corresponding extcon object. |
| 37 | If the extcon object has an optional callback "show_state" | 37 | If the extcon object has an optional callback "show_state" |
| 38 | defined, the showing function is overriden with the optional | 38 | defined, the showing function is overridden with the optional |
| 39 | callback. | 39 | callback. |
| 40 | 40 | ||
| 41 | If the default callback for showing function is used, the | 41 | If the default callback for showing function is used, the |
| @@ -46,19 +46,19 @@ Description: | |||
| 46 | TA=1 | 46 | TA=1 |
| 47 | EAR_JACK=0 | 47 | EAR_JACK=0 |
| 48 | # | 48 | # |
| 49 | In this example, the extcon device have USB_OTG and TA | 49 | In this example, the extcon device has USB_OTG and TA |
| 50 | cables attached and HDMI and EAR_JACK cables detached. | 50 | cables attached and HDMI and EAR_JACK cables detached. |
| 51 | 51 | ||
| 52 | In order to update the state of an extcon device, enter a hex | 52 | In order to update the state of an extcon device, enter a hex |
| 53 | state number starting with 0x. | 53 | state number starting with 0x: |
| 54 | echo 0xHEX > state | 54 | # echo 0xHEX > state |
| 55 | 55 | ||
| 56 | This updates the whole state of the extcon dev. | 56 | This updates the whole state of the extcon device. |
| 57 | Inputs of all the methods are required to meet the | 57 | Inputs of all the methods are required to meet the |
| 58 | mutually_exclusive contidions if they exist. | 58 | mutually_exclusive conditions if they exist. |
| 59 | 59 | ||
| 60 | It is recommended to use this "global" state interface if | 60 | It is recommended to use this "global" state interface if |
| 61 | you need to enter the value atomically. The later state | 61 | you need to set the value atomically. The later state |
| 62 | interface associated with each cable cannot update | 62 | interface associated with each cable cannot update |
| 63 | multiple cable states of an extcon device simultaneously. | 63 | multiple cable states of an extcon device simultaneously. |
| 64 | 64 | ||
| @@ -73,7 +73,7 @@ What: /sys/class/extcon/.../cable.x/state | |||
| 73 | Date: February 2012 | 73 | Date: February 2012 |
| 74 | Contact: MyungJoo Ham <myungjoo.ham@samsung.com> | 74 | Contact: MyungJoo Ham <myungjoo.ham@samsung.com> |
| 75 | Description: | 75 | Description: |
| 76 | The /sys/class/extcon/.../cable.x/name shows and stores the | 76 | The /sys/class/extcon/.../cable.x/state shows and stores the |
| 77 | state of cable "x" (integer between 0 and 31) of an extcon | 77 | state of cable "x" (integer between 0 and 31) of an extcon |
| 78 | device. The state value is either 0 (detached) or 1 | 78 | device. The state value is either 0 (detached) or 1 |
| 79 | (attached). | 79 | (attached). |
| @@ -83,8 +83,8 @@ Date: December 2011 | |||
| 83 | Contact: MyungJoo Ham <myungjoo.ham@samsung.com> | 83 | Contact: MyungJoo Ham <myungjoo.ham@samsung.com> |
| 84 | Description: | 84 | Description: |
| 85 | Shows the relations of mutually exclusiveness. For example, | 85 | Shows the relations of mutually exclusiveness. For example, |
| 86 | if the mutually_exclusive array of extcon_dev is | 86 | if the mutually_exclusive array of extcon device is |
| 87 | {0x3, 0x5, 0xC, 0x0}, the, the output is: | 87 | {0x3, 0x5, 0xC, 0x0}, then the output is: |
| 88 | # ls mutually_exclusive/ | 88 | # ls mutually_exclusive/ |
| 89 | 0x3 | 89 | 0x3 |
| 90 | 0x5 | 90 | 0x5 |
