Merge tag 'input-for-v6.10-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

properties:

  compatible:

    enum:

    oneOf:

      - enum:

          - qcom,pm8058-vib

          - qcom,pm8916-vib

          - qcom,pm8921-vib

          - qcom,pmi632-vib

      - items:

          - enum:

              - qcom,pm7250b-vib

              - qcom,pm7325b-vib

              - qcom,pm7550ba-vib

          - const: qcom,pmi632-vib

  reg:

    maxItems: 1

      - edt,edt-ft5406

      - edt,edt-ft5506

      - evervision,ev-ft5726

      - focaltech,ft5452

      - focaltech,ft6236

      - focaltech,ft8719

  reg:

    maxItems: 1

/* #define DEBUG */

#include <linux/input.h>

#include <linux/limits.h>

#include <linux/module.h>

#include <linux/mutex.h>

#include <linux/overflow.h>

#include <linux/sched.h>

#include <linux/slab.h>

		return -EINVAL;

	}

	ff_dev_size = sizeof(struct ff_device) +

				max_effects * sizeof(struct file *);

	if (ff_dev_size < max_effects) /* overflow */

	ff_dev_size = struct_size(ff, effect_owners, max_effects);

	if (ff_dev_size == SIZE_MAX) /* overflow */

		return -EINVAL;

	ff = kzalloc(ff_dev_size, GFP_KERNEL);

				     char name, const unsigned long *bm,

				     unsigned int min_bit, unsigned int max_bit)

{

	int len = 0, i;

	int bit = min_bit;

	int len = 0;

	len += snprintf(buf, max(size, 0), "%c", name);

	for (i = min_bit; i < max_bit; i++)

		if (bm[BIT_WORD(i)] & BIT_MASK(i))

			len += snprintf(buf + len, max(size - len, 0), "%X,", i);

	for_each_set_bit_from(bit, bm, max_bit)

		len += snprintf(buf + len, max(size - len, 0), "%X,", bit);

	return len;

}

static int input_print_modalias(char *buf, int size, const struct input_dev *id,

				int add_cr)

static int input_print_modalias_parts(char *buf, int size, int full_len,

				      const struct input_dev *id)

{

	int len;

	int len, klen, remainder, space;

	len = snprintf(buf, max(size, 0),

		       "input:b%04Xv%04Xp%04Xe%04X-",

	len += input_print_modalias_bits(buf + len, size - len,

				'e', id->evbit, 0, EV_MAX);

	len += input_print_modalias_bits(buf + len, size - len,

	/*

	 * Calculate the remaining space in the buffer making sure we

	 * have place for the terminating 0.

	 */

	space = max(size - (len + 1), 0);

	klen = input_print_modalias_bits(buf + len, size - len,

				'k', id->keybit, KEY_MIN_INTERESTING, KEY_MAX);

	len += klen;

	/*

	 * If we have more data than we can fit in the buffer, check

	 * if we can trim key data to fit in the rest. We will indicate

	 * that key data is incomplete by adding "+" sign at the end, like

	 * this: * "k1,2,3,45,+,".

	 *

	 * Note that we shortest key info (if present) is "k+," so we

	 * can only try to trim if key data is longer than that.

	 */

	if (full_len && size < full_len + 1 && klen > 3) {

		remainder = full_len - len;

		/*

		 * We can only trim if we have space for the remainder

		 * and also for at least "k+," which is 3 more characters.

		 */

		if (remainder <= space - 3) {

			/*

			 * We are guaranteed to have 'k' in the buffer, so

			 * we need at least 3 additional bytes for storing

			 * "+," in addition to the remainder.

			 */

			for (int i = size - 1 - remainder - 3; i >= 0; i--) {

				if (buf[i] == 'k' || buf[i] == ',') {

					strcpy(buf + i + 1, "+,");

					len = i + 3; /* Not counting '\0' */

					break;

				}

			}

		}

	}

	len += input_print_modalias_bits(buf + len, size - len,

				'r', id->relbit, 0, REL_MAX);

	len += input_print_modalias_bits(buf + len, size - len,

	len += input_print_modalias_bits(buf + len, size - len,

				'w', id->swbit, 0, SW_MAX);

	if (add_cr)

		len += snprintf(buf + len, max(size - len, 0), "\n");

	return len;

}

static int input_print_modalias(char *buf, int size, const struct input_dev *id)

{

	int full_len;

	/*

	 * Printing is done in 2 passes: first one figures out total length

	 * needed for the modalias string, second one will try to trim key

	 * data in case when buffer is too small for the entire modalias.

	 * If the buffer is too small regardless, it will fill as much as it

	 * can (without trimming key data) into the buffer and leave it to

	 * the caller to figure out what to do with the result.

	 */

	full_len = input_print_modalias_parts(NULL, 0, 0, id);

	return input_print_modalias_parts(buf, size, full_len, id);

}

static ssize_t input_dev_show_modalias(struct device *dev,

				       struct device_attribute *attr,

				       char *buf)

	struct input_dev *id = to_input_dev(dev);

	ssize_t len;

	len = input_print_modalias(buf, PAGE_SIZE, id, 1);

	len = input_print_modalias(buf, PAGE_SIZE, id);

	if (len < PAGE_SIZE - 2)

		len += snprintf(buf + len, PAGE_SIZE - len, "\n");

	return min_t(int, len, PAGE_SIZE);

}

	return 0;

}

/*

 * This is a pretty gross hack. When building uevent data the driver core

 * may try adding more environment variables to kobj_uevent_env without

 * telling us, so we have no idea how much of the buffer we can use to

 * avoid overflows/-ENOMEM elsewhere. To work around this let's artificially

 * reduce amount of memory we will use for the modalias environment variable.

 *

 * The potential additions are:

 *

 * SEQNUM=18446744073709551615 - (%llu - 28 bytes)

 * HOME=/ (6 bytes)

 * PATH=/sbin:/bin:/usr/sbin:/usr/bin (34 bytes)

 *

 * 68 bytes total. Allow extra buffer - 96 bytes

 */

#define UEVENT_ENV_EXTRA_LEN	96

static int input_add_uevent_modalias_var(struct kobj_uevent_env *env,

					 const struct input_dev *dev)

{

		return -ENOMEM;

	len = input_print_modalias(&env->buf[env->buflen - 1],

				   sizeof(env->buf) - env->buflen,

				   dev, 0);

	if (len >= (sizeof(env->buf) - env->buflen))

				   (int)sizeof(env->buf) - env->buflen -

					UEVENT_ENV_EXTRA_LEN,

				   dev);

	if (len >= ((int)sizeof(env->buf) - env->buflen -

					UEVENT_ENV_EXTRA_LEN))

		return -ENOMEM;

	env->buflen += len;

#define SEESAW_GAMEPAD_POLL_MIN		8

#define SEESAW_GAMEPAD_POLL_MAX		32

static const unsigned long SEESAW_BUTTON_MASK =

static const u32 SEESAW_BUTTON_MASK =

	BIT(SEESAW_BUTTON_A) | BIT(SEESAW_BUTTON_B) | BIT(SEESAW_BUTTON_X) |

	BIT(SEESAW_BUTTON_Y) | BIT(SEESAW_BUTTON_START) |

	BIT(SEESAW_BUTTON_SELECT);

struct seesaw_gamepad {

	struct input_dev *input_dev;

	struct i2c_client *i2c_client;

	u32 button_state;

};

struct seesaw_data {

	return 0;

}

static int seesaw_open(struct input_dev *input)

{

	struct seesaw_gamepad *private = input_get_drvdata(input);

	private->button_state = 0;

	return 0;

}

static void seesaw_poll(struct input_dev *input)

{

	struct seesaw_gamepad *private = input_get_drvdata(input);

	struct seesaw_data data;

	unsigned long changed;

	int err, i;

	err = seesaw_read_data(private->i2c_client, &data);

	input_report_abs(input, ABS_X, data.x);

	input_report_abs(input, ABS_Y, data.y);

	for_each_set_bit(i, &SEESAW_BUTTON_MASK,

			 BITS_PER_TYPE(SEESAW_BUTTON_MASK)) {

	data.button_state &= SEESAW_BUTTON_MASK;

	changed = private->button_state ^ data.button_state;

	private->button_state = data.button_state;

	for_each_set_bit(i, &changed, fls(SEESAW_BUTTON_MASK)) {

		if (!sparse_keymap_report_event(input, i,

						data.button_state & BIT(i),

						false))

	seesaw->input_dev->id.bustype = BUS_I2C;

	seesaw->input_dev->name = "Adafruit Seesaw Gamepad";

	seesaw->input_dev->phys = "i2c/" SEESAW_DEVICE_NAME;

	seesaw->input_dev->open = seesaw_open;

	input_set_drvdata(seesaw->input_dev, seesaw);

	input_set_abs_params(seesaw->input_dev, ABS_X,

			     0, SEESAW_JOYSTICK_MAX_AXIS,