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| author | Henrik Rydberg <rydberg@euromail.se> | 2010-11-27 11:16:48 +0300 |
|---|---|---|
| committer | Henrik Rydberg <rydberg@euromail.se> | 2010-12-16 12:39:57 +0300 |
| commit | 47c78e891323513e9909729b44033e2c6649e2b7 (patch) | |
| tree | 828e0da90418a890653ef2f0af3cf81714fe5c80 /drivers/input/input.c | |
| parent | c8ddb2713c624f432fa5fe3c7ecffcdda46ea0d4 (diff) | |
| download | linux-47c78e891323513e9909729b44033e2c6649e2b7.tar.xz | |
input: mt: Break out slots handling
In preparation for common code to handle a larger set of MT slots
devices, move the slots handling over to a separate file.
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Diffstat (limited to 'drivers/input/input.c')
| -rw-r--r-- | drivers/input/input.c | 48 |
1 files changed, 1 insertions, 47 deletions
diff --git a/drivers/input/input.c b/drivers/input/input.c index d092ef9291da..37708d1d86ec 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -12,7 +12,7 @@ #include <linux/init.h> #include <linux/types.h> -#include <linux/input.h> +#include <linux/input/mt.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/random.h> @@ -1691,52 +1691,6 @@ void input_free_device(struct input_dev *dev) EXPORT_SYMBOL(input_free_device); /** - * input_mt_create_slots() - create MT input slots - * @dev: input device supporting MT events and finger tracking - * @num_slots: number of slots used by the device - * - * This function allocates all necessary memory for MT slot handling in the - * input device, and adds ABS_MT_SLOT to the device capabilities. All slots - * are initially marked as unused by setting ABS_MT_TRACKING_ID to -1. - */ -int input_mt_create_slots(struct input_dev *dev, unsigned int num_slots) -{ - int i; - - if (!num_slots) - return 0; - - dev->mt = kcalloc(num_slots, sizeof(struct input_mt_slot), GFP_KERNEL); - if (!dev->mt) - return -ENOMEM; - - dev->mtsize = num_slots; - input_set_abs_params(dev, ABS_MT_SLOT, 0, num_slots - 1, 0, 0); - - /* Mark slots as 'unused' */ - for (i = 0; i < num_slots; i++) - dev->mt[i].abs[ABS_MT_TRACKING_ID - ABS_MT_FIRST] = -1; - - return 0; -} -EXPORT_SYMBOL(input_mt_create_slots); - -/** - * input_mt_destroy_slots() - frees the MT slots of the input device - * @dev: input device with allocated MT slots - * - * This function is only needed in error path as the input core will - * automatically free the MT slots when the device is destroyed. - */ -void input_mt_destroy_slots(struct input_dev *dev) -{ - kfree(dev->mt); - dev->mt = NULL; - dev->mtsize = 0; -} -EXPORT_SYMBOL(input_mt_destroy_slots); - -/** * input_set_capability - mark device as capable of a certain event * @dev: device that is capable of emitting or accepting event * @type: type of the event (EV_KEY, EV_REL, etc...) |