Input: matrix_keypad - make matrix keymap size dynamic
Remove assumption on the shift and size of rows/columns form matrix_keypad driver. Signed-off-by: Eric Miao <eric.y.miao@gmail.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Родитель
194934785a
Коммит
d82f1c3534
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@ -27,6 +27,7 @@ struct matrix_keypad {
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const struct matrix_keypad_platform_data *pdata;
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struct input_dev *input_dev;
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unsigned short *keycodes;
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unsigned int row_shift;
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uint32_t last_key_state[MATRIX_MAX_COLS];
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struct delayed_work work;
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@ -136,7 +137,7 @@ static void matrix_keypad_scan(struct work_struct *work)
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if ((bits_changed & (1 << row)) == 0)
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continue;
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code = (row << 4) + col;
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code = MATRIX_SCAN_CODE(row, col, keypad->row_shift);
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input_event(input_dev, EV_MSC, MSC_SCAN, code);
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input_report_key(input_dev,
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keypad->keycodes[code],
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@ -317,6 +318,7 @@ static int __devinit matrix_keypad_probe(struct platform_device *pdev)
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struct matrix_keypad *keypad;
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struct input_dev *input_dev;
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unsigned short *keycodes;
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unsigned int row_shift;
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int i;
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int err;
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@ -332,14 +334,11 @@ static int __devinit matrix_keypad_probe(struct platform_device *pdev)
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return -EINVAL;
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}
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if (!keymap_data->max_keymap_size) {
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dev_err(&pdev->dev, "invalid keymap data supplied\n");
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return -EINVAL;
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}
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row_shift = get_count_order(pdata->num_col_gpios);
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keypad = kzalloc(sizeof(struct matrix_keypad), GFP_KERNEL);
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keycodes = kzalloc(keymap_data->max_keymap_size *
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sizeof(keypad->keycodes),
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keycodes = kzalloc((pdata->num_row_gpios << row_shift) *
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sizeof(*keycodes),
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GFP_KERNEL);
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input_dev = input_allocate_device();
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if (!keypad || !keycodes || !input_dev) {
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@ -350,6 +349,7 @@ static int __devinit matrix_keypad_probe(struct platform_device *pdev)
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keypad->input_dev = input_dev;
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keypad->pdata = pdata;
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keypad->keycodes = keycodes;
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keypad->row_shift = row_shift;
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keypad->stopped = true;
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INIT_DELAYED_WORK(&keypad->work, matrix_keypad_scan);
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spin_lock_init(&keypad->lock);
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@ -363,7 +363,7 @@ static int __devinit matrix_keypad_probe(struct platform_device *pdev)
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input_dev->keycode = keycodes;
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input_dev->keycodesize = sizeof(*keycodes);
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input_dev->keycodemax = keymap_data->max_keymap_size;
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input_dev->keycodemax = pdata->num_row_gpios << keypad->row_shift;
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for (i = 0; i < keymap_data->keymap_size; i++) {
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unsigned int key = keymap_data->keymap[i];
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@ -371,7 +371,7 @@ static int __devinit matrix_keypad_probe(struct platform_device *pdev)
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unsigned int col = KEY_COL(key);
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unsigned short code = KEY_VAL(key);
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keycodes[(row << 4) + col] = code;
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keycodes[MATRIX_SCAN_CODE(row, col, row_shift)] = code;
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__set_bit(code, input_dev->keybit);
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}
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__clear_bit(KEY_RESERVED, input_dev->keybit);
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@ -15,12 +15,13 @@
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#define KEY_COL(k) (((k) >> 16) & 0xff)
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#define KEY_VAL(k) ((k) & 0xffff)
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#define MATRIX_SCAN_CODE(row, col, row_shift) (((row) << (row_shift)) + (col))
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/**
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* struct matrix_keymap_data - keymap for matrix keyboards
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* @keymap: pointer to array of uint32 values encoded with KEY() macro
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* representing keymap
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* @keymap_size: number of entries (initialized) in this keymap
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* @max_keymap_size: maximum size of keymap supported by the device
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*
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* This structure is supposed to be used by platform code to supply
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* keymaps to drivers that implement matrix-like keypads/keyboards.
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@ -28,14 +29,13 @@
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struct matrix_keymap_data {
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const uint32_t *keymap;
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unsigned int keymap_size;
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unsigned int max_keymap_size;
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};
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/**
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* struct matrix_keypad_platform_data - platform-dependent keypad data
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* @keymap_data: pointer to &matrix_keymap_data
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* @row_gpios: array of gpio numbers reporesenting rows
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* @col_gpios: array of gpio numbers reporesenting colums
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* @row_gpios: pointer to array of gpio numbers representing rows
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* @col_gpios: pointer to array of gpio numbers reporesenting colums
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* @num_row_gpios: actual number of row gpios used by device
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* @num_col_gpios: actual number of col gpios used by device
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* @col_scan_delay_us: delay, measured in microseconds, that is
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@ -48,8 +48,9 @@ struct matrix_keymap_data {
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struct matrix_keypad_platform_data {
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const struct matrix_keymap_data *keymap_data;
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unsigned int row_gpios[MATRIX_MAX_ROWS];
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unsigned int col_gpios[MATRIX_MAX_COLS];
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const unsigned int *row_gpios;
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const unsigned int *col_gpios;
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unsigned int num_row_gpios;
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unsigned int num_col_gpios;
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