diff options
Diffstat (limited to 'drivers/input/keyboard')
| -rw-r--r-- | drivers/input/keyboard/stmpe-keypad.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/drivers/input/keyboard/stmpe-keypad.c b/drivers/input/keyboard/stmpe-keypad.c index 9397cf9c625..be8f177767b 100644 --- a/drivers/input/keyboard/stmpe-keypad.c +++ b/drivers/input/keyboard/stmpe-keypad.c @@ -108,10 +108,52 @@ struct stmpe_keypad { unsigned int rows; unsigned int cols; + bool enable; unsigned short keymap[STMPE_KEYPAD_KEYMAP_SIZE]; }; +static ssize_t stmpe_show_attr_enable(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct platform_device *pdev = to_platform_device(dev); + struct stmpe_keypad *keypad = platform_get_drvdata(pdev); + return sprintf(buf, "%d\n", keypad->enable); +} + +static ssize_t stmpe_store_attr_enable(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct platform_device *pdev = to_platform_device(dev); + struct stmpe_keypad *keypad = platform_get_drvdata(pdev); + struct stmpe *stmpe = keypad->stmpe; + unsigned long val; + + if (strict_strtoul(buf, 0, &val)) + return -EINVAL; + + if (keypad->enable != val) { + keypad->enable = val; + if (!val) + stmpe_disable(stmpe, STMPE_BLOCK_KEYPAD); + else + stmpe_enable(stmpe, STMPE_BLOCK_KEYPAD); + } + return count; +} + +static DEVICE_ATTR(enable, S_IWUSR | S_IRUGO, + stmpe_show_attr_enable, stmpe_store_attr_enable); + +static struct attribute *stmpe_keypad_attrs[] = { + &dev_attr_enable.attr, + NULL, +}; + +static struct attribute_group stmpe_attr_group = { + .attrs = stmpe_keypad_attrs, +}; + static int stmpe_keypad_read_data(struct stmpe_keypad *keypad, u8 *data) { const struct stmpe_keypad_variant *variant = keypad->variant; @@ -331,11 +373,21 @@ static int __devinit stmpe_keypad_probe(struct platform_device *pdev) dev_err(&pdev->dev, "unable to get irq: %d\n", ret); goto out_unregisterinput; } + /* sysfs implementation for dynamic enable/disable the input event */ + ret = sysfs_create_group(&pdev->dev.kobj, &stmpe_attr_group); + if (ret) { + dev_err(&pdev->dev, "failed to create sysfs entries\n"); + goto out_free_irq; + } + + keypad->enable = true; platform_set_drvdata(pdev, keypad); return 0; +out_free_irq: + free_irq(irq, keypad); out_unregisterinput: input_unregister_device(input); input = NULL; @@ -354,6 +406,7 @@ static int __devexit stmpe_keypad_remove(struct platform_device *pdev) stmpe_disable(stmpe, STMPE_BLOCK_KEYPAD); + sysfs_remove_group(&pdev->dev.kobj, &stmpe_attr_group); free_irq(irq, keypad); input_unregister_device(keypad->input); platform_set_drvdata(pdev, NULL); |