1 files changed, 0 insertions, 504 deletions
diff --git a/ANDROID_3.4.5/drivers/input/keyboard/matrix_keypad.c b/ANDROID_3.4.5/drivers/input/keyboard/matrix_keypad.c
deleted file mode 100644
index 9b223d73..00000000
--- a/ANDROID_3.4.5/drivers/input/keyboard/matrix_keypad.c
+++ /dev/null
@@ -1,504 +0,0 @@
-/*
- *  GPIO driven matrix keyboard driver
- *
- *  Copyright (c) 2008 Marek Vasut <marek.vasut@gmail.com>
- *
- *  Based on corgikbd.c
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License version 2 as
- *  published by the Free Software Foundation.
- *
- */
-
-#include <linux/types.h>
-#include <linux/delay.h>
-#include <linux/platform_device.h>
-#include <linux/init.h>
-#include <linux/input.h>
-#include <linux/irq.h>
-#include <linux/interrupt.h>
-#include <linux/jiffies.h>
-#include <linux/module.h>
-#include <linux/gpio.h>
-#include <linux/input/matrix_keypad.h>
-#include <linux/slab.h>
-
-struct matrix_keypad {
-	const struct matrix_keypad_platform_data *pdata;
-	struct input_dev *input_dev;
-	unsigned short *keycodes;
-	unsigned int row_shift;
-
-	DECLARE_BITMAP(disabled_gpios, MATRIX_MAX_ROWS);
-
-	uint32_t last_key_state[MATRIX_MAX_COLS];
-	struct delayed_work work;
-	spinlock_t lock;
-	bool scan_pending;
-	bool stopped;
-	bool gpio_all_disabled;
-};
-
-/*
- * NOTE: normally the GPIO has to be put into HiZ when de-activated to cause
- * minmal side effect when scanning other columns, here it is configured to
- * be input, and it should work on most platforms.
- */
-static void __activate_col(const struct matrix_keypad_platform_data *pdata,
-			   int col, bool on)
-{
-	bool level_on = !pdata->active_low;
-
-	if (on) {
-		gpio_direction_output(pdata->col_gpios[col], level_on);
-	} else {
-		gpio_set_value_cansleep(pdata->col_gpios[col], !level_on);
-		gpio_direction_input(pdata->col_gpios[col]);
-	}
-}
-
-static void activate_col(const struct matrix_keypad_platform_data *pdata,
-			 int col, bool on)
-{
-	__activate_col(pdata, col, on);
-
-	if (on && pdata->col_scan_delay_us)
-		udelay(pdata->col_scan_delay_us);
-}
-
-static void activate_all_cols(const struct matrix_keypad_platform_data *pdata,
-			      bool on)
-{
-	int col;
-
-	for (col = 0; col < pdata->num_col_gpios; col++)
-		__activate_col(pdata, col, on);
-}
-
-static bool row_asserted(const struct matrix_keypad_platform_data *pdata,
-			 int row)
-{
-	return gpio_get_value_cansleep(pdata->row_gpios[row]) ?
-			!pdata->active_low : pdata->active_low;
-}
-
-static void enable_row_irqs(struct matrix_keypad *keypad)
-{
-	const struct matrix_keypad_platform_data *pdata = keypad->pdata;
-	int i;
-
-	if (pdata->clustered_irq > 0)
-		enable_irq(pdata->clustered_irq);
-	else {
-		for (i = 0; i < pdata->num_row_gpios; i++)
-			enable_irq(gpio_to_irq(pdata->row_gpios[i]));
-	}
-}
-
-static void disable_row_irqs(struct matrix_keypad *keypad)
-{
-	const struct matrix_keypad_platform_data *pdata = keypad->pdata;
-	int i;
-
-	if (pdata->clustered_irq > 0)
-		disable_irq_nosync(pdata->clustered_irq);
-	else {
-		for (i = 0; i < pdata->num_row_gpios; i++)
-			disable_irq_nosync(gpio_to_irq(pdata->row_gpios[i]));
-	}
-}
-
-/*
- * This gets the keys from keyboard and reports it to input subsystem
- */
-static void matrix_keypad_scan(struct work_struct *work)
-{
-	struct matrix_keypad *keypad =
-		container_of(work, struct matrix_keypad, work.work);
-	struct input_dev *input_dev = keypad->input_dev;
-	const struct matrix_keypad_platform_data *pdata = keypad->pdata;
-	uint32_t new_state[MATRIX_MAX_COLS];
-	int row, col, code;
-
-	/* de-activate all columns for scanning */
-	activate_all_cols(pdata, false);
-
-	memset(new_state, 0, sizeof(new_state));
-
-	/* assert each column and read the row status out */
-	for (col = 0; col < pdata->num_col_gpios; col++) {
-
-		activate_col(pdata, col, true);
-
-		for (row = 0; row < pdata->num_row_gpios; row++)
-			new_state[col] |=
-				row_asserted(pdata, row) ? (1 << row) : 0;
-
-		activate_col(pdata, col, false);
-	}
-
-	for (col = 0; col < pdata->num_col_gpios; col++) {
-		uint32_t bits_changed;
-
-		bits_changed = keypad->last_key_state[col] ^ new_state[col];
-		if (bits_changed == 0)
-			continue;
-
-		for (row = 0; row < pdata->num_row_gpios; row++) {
-			if ((bits_changed & (1 << row)) == 0)
-				continue;
-
-			code = MATRIX_SCAN_CODE(row, col, keypad->row_shift);
-			input_event(input_dev, EV_MSC, MSC_SCAN, code);
-			input_report_key(input_dev,
-					 keypad->keycodes[code],
-					 new_state[col] & (1 << row));
-		}
-	}
-	input_sync(input_dev);
-
-	memcpy(keypad->last_key_state, new_state, sizeof(new_state));
-
-	activate_all_cols(pdata, true);
-
-	/* Enable IRQs again */
-	spin_lock_irq(&keypad->lock);
-	keypad->scan_pending = false;
-	enable_row_irqs(keypad);
-	spin_unlock_irq(&keypad->lock);
-}
-
-static irqreturn_t matrix_keypad_interrupt(int irq, void *id)
-{
-	struct matrix_keypad *keypad = id;
-	unsigned long flags;
-
-	spin_lock_irqsave(&keypad->lock, flags);
-
-	/*
-	 * See if another IRQ beaten us to it and scheduled the
-	 * scan already. In that case we should not try to
-	 * disable IRQs again.
-	 */
-	if (unlikely(keypad->scan_pending || keypad->stopped))
-		goto out;
-
-	disable_row_irqs(keypad);
-	keypad->scan_pending = true;
-	schedule_delayed_work(&keypad->work,
-		msecs_to_jiffies(keypad->pdata->debounce_ms));
-
-out:
-	spin_unlock_irqrestore(&keypad->lock, flags);
-	return IRQ_HANDLED;
-}
-
-static int matrix_keypad_start(struct input_dev *dev)
-{
-	struct matrix_keypad *keypad = input_get_drvdata(dev);
-
-	keypad->stopped = false;
-	mb();
-
-	/*
-	 * Schedule an immediate key scan to capture current key state;
-	 * columns will be activated and IRQs be enabled after the scan.
-	 */
-	schedule_delayed_work(&keypad->work, 0);
-
-	return 0;
-}
-
-static void matrix_keypad_stop(struct input_dev *dev)
-{
-	struct matrix_keypad *keypad = input_get_drvdata(dev);
-
-	keypad->stopped = true;
-	mb();
-	flush_work(&keypad->work.work);
-	/*
-	 * matrix_keypad_scan() will leave IRQs enabled;
-	 * we should disable them now.
-	 */
-	disable_row_irqs(keypad);
-}
-
-#ifdef CONFIG_PM
-static void matrix_keypad_enable_wakeup(struct matrix_keypad *keypad)
-{
-	const struct matrix_keypad_platform_data *pdata = keypad->pdata;
-	unsigned int gpio;
-	int i;
-
-	if (pdata->clustered_irq > 0) {
-		if (enable_irq_wake(pdata->clustered_irq) == 0)
-			keypad->gpio_all_disabled = true;
-	} else {
-
-		for (i = 0; i < pdata->num_row_gpios; i++) {
-			if (!test_bit(i, keypad->disabled_gpios)) {
-				gpio = pdata->row_gpios[i];
-
-				if (enable_irq_wake(gpio_to_irq(gpio)) == 0)
-					__set_bit(i, keypad->disabled_gpios);
-			}
-		}
-	}
-}
-
-static void matrix_keypad_disable_wakeup(struct matrix_keypad *keypad)
-{
-	const struct matrix_keypad_platform_data *pdata = keypad->pdata;
-	unsigned int gpio;
-	int i;
-
-	if (pdata->clustered_irq > 0) {
-		if (keypad->gpio_all_disabled) {
-			disable_irq_wake(pdata->clustered_irq);
-			keypad->gpio_all_disabled = false;
-		}
-	} else {
-		for (i = 0; i < pdata->num_row_gpios; i++) {
-			if (test_and_clear_bit(i, keypad->disabled_gpios)) {
-				gpio = pdata->row_gpios[i];
-				disable_irq_wake(gpio_to_irq(gpio));
-			}
-		}
-	}
-}
-
-static int matrix_keypad_suspend(struct device *dev)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct matrix_keypad *keypad = platform_get_drvdata(pdev);
-
-	matrix_keypad_stop(keypad->input_dev);
-
-	if (device_may_wakeup(&pdev->dev))
-		matrix_keypad_enable_wakeup(keypad);
-
-	return 0;
-}
-
-static int matrix_keypad_resume(struct device *dev)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct matrix_keypad *keypad = platform_get_drvdata(pdev);
-
-	if (device_may_wakeup(&pdev->dev))
-		matrix_keypad_disable_wakeup(keypad);
-
-	matrix_keypad_start(keypad->input_dev);
-
-	return 0;
-}
-
-static const SIMPLE_DEV_PM_OPS(matrix_keypad_pm_ops,
-				matrix_keypad_suspend, matrix_keypad_resume);
-#endif
-
-static int __devinit init_matrix_gpio(struct platform_device *pdev,
-					struct matrix_keypad *keypad)
-{
-	const struct matrix_keypad_platform_data *pdata = keypad->pdata;
-	int i, err = -EINVAL;
-
-	/* initialized strobe lines as outputs, activated */
-	for (i = 0; i < pdata->num_col_gpios; i++) {
-		err = gpio_request(pdata->col_gpios[i], "matrix_kbd_col");
-		if (err) {
-			dev_err(&pdev->dev,
-				"failed to request GPIO%d for COL%d\n",
-				pdata->col_gpios[i], i);
-			goto err_free_cols;
-		}
-
-		gpio_direction_output(pdata->col_gpios[i], !pdata->active_low);
-	}
-
-	for (i = 0; i < pdata->num_row_gpios; i++) {
-		err = gpio_request(pdata->row_gpios[i], "matrix_kbd_row");
-		if (err) {
-			dev_err(&pdev->dev,
-				"failed to request GPIO%d for ROW%d\n",
-				pdata->row_gpios[i], i);
-			goto err_free_rows;
-		}
-
-		gpio_direction_input(pdata->row_gpios[i]);
-	}
-
-	if (pdata->clustered_irq > 0) {
-		err = request_irq(pdata->clustered_irq,
-				matrix_keypad_interrupt,
-				pdata->clustered_irq_flags,
-				"matrix-keypad", keypad);
-		if (err) {
-			dev_err(&pdev->dev,
-				"Unable to acquire clustered interrupt\n");
-			goto err_free_rows;
-		}
-	} else {
-		for (i = 0; i < pdata->num_row_gpios; i++) {
-			err = request_irq(gpio_to_irq(pdata->row_gpios[i]),
-					matrix_keypad_interrupt,
-					IRQF_TRIGGER_RISING |
-					IRQF_TRIGGER_FALLING,
-					"matrix-keypad", keypad);
-			if (err) {
-				dev_err(&pdev->dev,
-					"Unable to acquire interrupt "
-					"for GPIO line %i\n",
-					pdata->row_gpios[i]);
-				goto err_free_irqs;
-			}
-		}
-	}
-
-	/* initialized as disabled - enabled by input->open */
-	disable_row_irqs(keypad);
-	return 0;
-
-err_free_irqs:
-	while (--i >= 0)
-		free_irq(gpio_to_irq(pdata->row_gpios[i]), keypad);
-	i = pdata->num_row_gpios;
-err_free_rows:
-	while (--i >= 0)
-		gpio_free(pdata->row_gpios[i]);
-	i = pdata->num_col_gpios;
-err_free_cols:
-	while (--i >= 0)
-		gpio_free(pdata->col_gpios[i]);
-
-	return err;
-}
-
-static int __devinit matrix_keypad_probe(struct platform_device *pdev)
-{
-	const struct matrix_keypad_platform_data *pdata;
-	const struct matrix_keymap_data *keymap_data;
-	struct matrix_keypad *keypad;
-	struct input_dev *input_dev;
-	unsigned short *keycodes;
-	unsigned int row_shift;
-	int err;
-
-	pdata = pdev->dev.platform_data;
-	if (!pdata) {
-		dev_err(&pdev->dev, "no platform data defined\n");
-		return -EINVAL;
-	}
-
-	keymap_data = pdata->keymap_data;
-	if (!keymap_data) {
-		dev_err(&pdev->dev, "no keymap data defined\n");
-		return -EINVAL;
-	}
-
-	row_shift = get_count_order(pdata->num_col_gpios);
-
-	keypad = kzalloc(sizeof(struct matrix_keypad), GFP_KERNEL);
-	keycodes = kzalloc((pdata->num_row_gpios << row_shift) *
-				sizeof(*keycodes),
-			   GFP_KERNEL);
-	input_dev = input_allocate_device();
-	if (!keypad || !keycodes || !input_dev) {
-		err = -ENOMEM;
-		goto err_free_mem;
-	}
-
-	keypad->input_dev = input_dev;
-	keypad->pdata = pdata;
-	keypad->keycodes = keycodes;
-	keypad->row_shift = row_shift;
-	keypad->stopped = true;
-	INIT_DELAYED_WORK(&keypad->work, matrix_keypad_scan);
-	spin_lock_init(&keypad->lock);
-
-	input_dev->name		= pdev->name;
-	input_dev->id.bustype	= BUS_HOST;
-	input_dev->dev.parent	= &pdev->dev;
-	input_dev->evbit[0]	= BIT_MASK(EV_KEY);
-	if (!pdata->no_autorepeat)
-		input_dev->evbit[0] |= BIT_MASK(EV_REP);
-	input_dev->open		= matrix_keypad_start;
-	input_dev->close	= matrix_keypad_stop;
-
-	input_dev->keycode	= keycodes;
-	input_dev->keycodesize	= sizeof(*keycodes);
-	input_dev->keycodemax	= pdata->num_row_gpios << row_shift;
-
-	matrix_keypad_build_keymap(keymap_data, row_shift,
-				   input_dev->keycode, input_dev->keybit);
-
-	input_set_capability(input_dev, EV_MSC, MSC_SCAN);
-	input_set_drvdata(input_dev, keypad);
-
-	err = init_matrix_gpio(pdev, keypad);
-	if (err)
-		goto err_free_mem;
-
-	err = input_register_device(keypad->input_dev);
-	if (err)
-		goto err_free_mem;
-
-	device_init_wakeup(&pdev->dev, pdata->wakeup);
-	platform_set_drvdata(pdev, keypad);
-
-	return 0;
-
-err_free_mem:
-	input_free_device(input_dev);
-	kfree(keycodes);
-	kfree(keypad);
-	return err;
-}
-
-static int __devexit matrix_keypad_remove(struct platform_device *pdev)
-{
-	struct matrix_keypad *keypad = platform_get_drvdata(pdev);
-	const struct matrix_keypad_platform_data *pdata = keypad->pdata;
-	int i;
-
-	device_init_wakeup(&pdev->dev, 0);
-
-	if (pdata->clustered_irq > 0) {
-		free_irq(pdata->clustered_irq, keypad);
-	} else {
-		for (i = 0; i < pdata->num_row_gpios; i++)
-			free_irq(gpio_to_irq(pdata->row_gpios[i]), keypad);
-	}
-
-	for (i = 0; i < pdata->num_row_gpios; i++)
-		gpio_free(pdata->row_gpios[i]);
-
-	for (i = 0; i < pdata->num_col_gpios; i++)
-		gpio_free(pdata->col_gpios[i]);
-
-	input_unregister_device(keypad->input_dev);
-	platform_set_drvdata(pdev, NULL);
-	kfree(keypad->keycodes);
-	kfree(keypad);
-
-	return 0;
-}
-
-static struct platform_driver matrix_keypad_driver = {
-	.probe		= matrix_keypad_probe,
-	.remove		= __devexit_p(matrix_keypad_remove),
-	.driver		= {
-		.name	= "matrix-keypad",
-		.owner	= THIS_MODULE,
-#ifdef CONFIG_PM
-		.pm	= &matrix_keypad_pm_ops,
-#endif
-	},
-};
-module_platform_driver(matrix_keypad_driver);
-
-MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
-MODULE_DESCRIPTION("GPIO Driven Matrix Keypad Driver");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:matrix-keypad");