diff options
Diffstat (limited to 'drivers/input/i8042.c')
| -rw-r--r-- | drivers/input/i8042.c | 35 |
1 files changed, 20 insertions, 15 deletions
diff --git a/drivers/input/i8042.c b/drivers/input/i8042.c index 5678f8e3cfb..9a5dc46207c 100644 --- a/drivers/input/i8042.c +++ b/drivers/input/i8042.c @@ -167,19 +167,8 @@ static int kbd_controller_present(void) return in8(I8042_STS_REG) != 0xff; } -/* - * Implement a weak default function for boards that optionally - * need to skip the i8042 initialization. - * - * TODO(sjg@chromium.org): Use device tree for this? - */ -int __weak board_i8042_skip(void) -{ - /* As default, don't skip */ - return 0; -} - -void i8042_flush(void) +/** Flush all buffer from keyboard controller to host*/ +static void i8042_flush(void) { int timeout; @@ -202,7 +191,13 @@ void i8042_flush(void) } } -int i8042_disable(void) +/** + * Disables the keyboard so that key strokes no longer generate scancodes to + * the host. + * + * @return 0 if ok, -1 if keyboard input was found while disabling + */ +static int i8042_disable(void) { if (kbd_input_empty() == 0) return -1; @@ -266,7 +261,7 @@ static int i8042_start(struct udevice *dev) char *penv; int ret; - if (!kbd_controller_present() || board_i8042_skip()) { + if (!kbd_controller_present()) { debug("i8042 keyboard controller is not present\n"); return -ENOENT; } @@ -294,6 +289,15 @@ static int i8042_start(struct udevice *dev) return 0; } +static int i8042_kbd_remove(struct udevice *dev) +{ + if (i8042_disable()) + log_debug("i8042_disable() failed. fine, continue.\n"); + i8042_flush(); + + return 0; +} + /** * Set up the i8042 keyboard. This is called by the stdio device handler * @@ -348,6 +352,7 @@ U_BOOT_DRIVER(i8042_kbd) = { .id = UCLASS_KEYBOARD, .of_match = i8042_kbd_ids, .probe = i8042_kbd_probe, + .remove = i8042_kbd_remove, .ops = &i8042_kbd_ops, .priv_auto_alloc_size = sizeof(struct i8042_kbd_priv), }; |