diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/input/keyboard/stmpe-keypad.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/input/keyboard/stmpe-keypad.c | 375 |
1 files changed, 0 insertions, 375 deletions
diff --git a/ANDROID_3.4.5/drivers/input/keyboard/stmpe-keypad.c b/ANDROID_3.4.5/drivers/input/keyboard/stmpe-keypad.c deleted file mode 100644 index 9397cf9c..00000000 --- a/ANDROID_3.4.5/drivers/input/keyboard/stmpe-keypad.c +++ /dev/null @@ -1,375 +0,0 @@ -/* - * Copyright (C) ST-Ericsson SA 2010 - * - * License Terms: GNU General Public License, version 2 - * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson - */ - -#include <linux/module.h> -#include <linux/init.h> -#include <linux/slab.h> -#include <linux/input.h> -#include <linux/interrupt.h> -#include <linux/platform_device.h> -#include <linux/input/matrix_keypad.h> -#include <linux/mfd/stmpe.h> - -/* These are at the same addresses in all STMPE variants */ -#define STMPE_KPC_COL 0x60 -#define STMPE_KPC_ROW_MSB 0x61 -#define STMPE_KPC_ROW_LSB 0x62 -#define STMPE_KPC_CTRL_MSB 0x63 -#define STMPE_KPC_CTRL_LSB 0x64 -#define STMPE_KPC_COMBI_KEY_0 0x65 -#define STMPE_KPC_COMBI_KEY_1 0x66 -#define STMPE_KPC_COMBI_KEY_2 0x67 -#define STMPE_KPC_DATA_BYTE0 0x68 -#define STMPE_KPC_DATA_BYTE1 0x69 -#define STMPE_KPC_DATA_BYTE2 0x6a -#define STMPE_KPC_DATA_BYTE3 0x6b -#define STMPE_KPC_DATA_BYTE4 0x6c - -#define STMPE_KPC_CTRL_LSB_SCAN (0x1 << 0) -#define STMPE_KPC_CTRL_LSB_DEBOUNCE (0x7f << 1) -#define STMPE_KPC_CTRL_MSB_SCAN_COUNT (0xf << 4) - -#define STMPE_KPC_ROW_MSB_ROWS 0xff - -#define STMPE_KPC_DATA_UP (0x1 << 7) -#define STMPE_KPC_DATA_ROW (0xf << 3) -#define STMPE_KPC_DATA_COL (0x7 << 0) -#define STMPE_KPC_DATA_NOKEY_MASK 0x78 - -#define STMPE_KEYPAD_MAX_DEBOUNCE 127 -#define STMPE_KEYPAD_MAX_SCAN_COUNT 15 - -#define STMPE_KEYPAD_MAX_ROWS 8 -#define STMPE_KEYPAD_MAX_COLS 8 -#define STMPE_KEYPAD_ROW_SHIFT 3 -#define STMPE_KEYPAD_KEYMAP_SIZE \ - (STMPE_KEYPAD_MAX_ROWS * STMPE_KEYPAD_MAX_COLS) - -/** - * struct stmpe_keypad_variant - model-specific attributes - * @auto_increment: whether the KPC_DATA_BYTE register address - * auto-increments on multiple read - * @num_data: number of data bytes - * @num_normal_data: number of normal keys' data bytes - * @max_cols: maximum number of columns supported - * @max_rows: maximum number of rows supported - * @col_gpios: bitmask of gpios which can be used for columns - * @row_gpios: bitmask of gpios which can be used for rows - */ -struct stmpe_keypad_variant { - bool auto_increment; - int num_data; - int num_normal_data; - int max_cols; - int max_rows; - unsigned int col_gpios; - unsigned int row_gpios; -}; - -static const struct stmpe_keypad_variant stmpe_keypad_variants[] = { - [STMPE1601] = { - .auto_increment = true, - .num_data = 5, - .num_normal_data = 3, - .max_cols = 8, - .max_rows = 8, - .col_gpios = 0x000ff, /* GPIO 0 - 7 */ - .row_gpios = 0x0ff00, /* GPIO 8 - 15 */ - }, - [STMPE2401] = { - .auto_increment = false, - .num_data = 3, - .num_normal_data = 2, - .max_cols = 8, - .max_rows = 12, - .col_gpios = 0x0000ff, /* GPIO 0 - 7*/ - .row_gpios = 0x1fef00, /* GPIO 8-14, 16-20 */ - }, - [STMPE2403] = { - .auto_increment = true, - .num_data = 5, - .num_normal_data = 3, - .max_cols = 8, - .max_rows = 12, - .col_gpios = 0x0000ff, /* GPIO 0 - 7*/ - .row_gpios = 0x1fef00, /* GPIO 8-14, 16-20 */ - }, -}; - -struct stmpe_keypad { - struct stmpe *stmpe; - struct input_dev *input; - const struct stmpe_keypad_variant *variant; - const struct stmpe_keypad_platform_data *plat; - - unsigned int rows; - unsigned int cols; - - unsigned short keymap[STMPE_KEYPAD_KEYMAP_SIZE]; -}; - -static int stmpe_keypad_read_data(struct stmpe_keypad *keypad, u8 *data) -{ - const struct stmpe_keypad_variant *variant = keypad->variant; - struct stmpe *stmpe = keypad->stmpe; - int ret; - int i; - - if (variant->auto_increment) - return stmpe_block_read(stmpe, STMPE_KPC_DATA_BYTE0, - variant->num_data, data); - - for (i = 0; i < variant->num_data; i++) { - ret = stmpe_reg_read(stmpe, STMPE_KPC_DATA_BYTE0 + i); - if (ret < 0) - return ret; - - data[i] = ret; - } - - return 0; -} - -static irqreturn_t stmpe_keypad_irq(int irq, void *dev) -{ - struct stmpe_keypad *keypad = dev; - struct input_dev *input = keypad->input; - const struct stmpe_keypad_variant *variant = keypad->variant; - u8 fifo[variant->num_data]; - int ret; - int i; - - ret = stmpe_keypad_read_data(keypad, fifo); - if (ret < 0) - return IRQ_NONE; - - for (i = 0; i < variant->num_normal_data; i++) { - u8 data = fifo[i]; - int row = (data & STMPE_KPC_DATA_ROW) >> 3; - int col = data & STMPE_KPC_DATA_COL; - int code = MATRIX_SCAN_CODE(row, col, STMPE_KEYPAD_ROW_SHIFT); - bool up = data & STMPE_KPC_DATA_UP; - - if ((data & STMPE_KPC_DATA_NOKEY_MASK) - == STMPE_KPC_DATA_NOKEY_MASK) - continue; - - input_event(input, EV_MSC, MSC_SCAN, code); - input_report_key(input, keypad->keymap[code], !up); - input_sync(input); - } - - return IRQ_HANDLED; -} - -static int __devinit stmpe_keypad_altfunc_init(struct stmpe_keypad *keypad) -{ - const struct stmpe_keypad_variant *variant = keypad->variant; - unsigned int col_gpios = variant->col_gpios; - unsigned int row_gpios = variant->row_gpios; - struct stmpe *stmpe = keypad->stmpe; - unsigned int pins = 0; - int i; - - /* - * Figure out which pins need to be set to the keypad alternate - * function. - * - * {cols,rows}_gpios are bitmasks of which pins on the chip can be used - * for the keypad. - * - * keypad->{cols,rows} are a bitmask of which pins (of the ones useable - * for the keypad) are used on the board. - */ - - for (i = 0; i < variant->max_cols; i++) { - int num = __ffs(col_gpios); - - if (keypad->cols & (1 << i)) - pins |= 1 << num; - - col_gpios &= ~(1 << num); - } - - for (i = 0; i < variant->max_rows; i++) { - int num = __ffs(row_gpios); - - if (keypad->rows & (1 << i)) - pins |= 1 << num; - - row_gpios &= ~(1 << num); - } - - return stmpe_set_altfunc(stmpe, pins, STMPE_BLOCK_KEYPAD); -} - -static int __devinit stmpe_keypad_chip_init(struct stmpe_keypad *keypad) -{ - const struct stmpe_keypad_platform_data *plat = keypad->plat; - const struct stmpe_keypad_variant *variant = keypad->variant; - struct stmpe *stmpe = keypad->stmpe; - int ret; - - if (plat->debounce_ms > STMPE_KEYPAD_MAX_DEBOUNCE) - return -EINVAL; - - if (plat->scan_count > STMPE_KEYPAD_MAX_SCAN_COUNT) - return -EINVAL; - - ret = stmpe_enable(stmpe, STMPE_BLOCK_KEYPAD); - if (ret < 0) - return ret; - - ret = stmpe_keypad_altfunc_init(keypad); - if (ret < 0) - return ret; - - ret = stmpe_reg_write(stmpe, STMPE_KPC_COL, keypad->cols); - if (ret < 0) - return ret; - - ret = stmpe_reg_write(stmpe, STMPE_KPC_ROW_LSB, keypad->rows); - if (ret < 0) - return ret; - - if (variant->max_rows > 8) { - ret = stmpe_set_bits(stmpe, STMPE_KPC_ROW_MSB, - STMPE_KPC_ROW_MSB_ROWS, - keypad->rows >> 8); - if (ret < 0) - return ret; - } - - ret = stmpe_set_bits(stmpe, STMPE_KPC_CTRL_MSB, - STMPE_KPC_CTRL_MSB_SCAN_COUNT, - plat->scan_count << 4); - if (ret < 0) - return ret; - - return stmpe_set_bits(stmpe, STMPE_KPC_CTRL_LSB, - STMPE_KPC_CTRL_LSB_SCAN | - STMPE_KPC_CTRL_LSB_DEBOUNCE, - STMPE_KPC_CTRL_LSB_SCAN | - (plat->debounce_ms << 1)); -} - -static int __devinit stmpe_keypad_probe(struct platform_device *pdev) -{ - struct stmpe *stmpe = dev_get_drvdata(pdev->dev.parent); - struct stmpe_keypad_platform_data *plat; - struct stmpe_keypad *keypad; - struct input_dev *input; - int ret; - int irq; - int i; - - plat = stmpe->pdata->keypad; - if (!plat) - return -ENODEV; - - irq = platform_get_irq(pdev, 0); - if (irq < 0) - return irq; - - keypad = kzalloc(sizeof(struct stmpe_keypad), GFP_KERNEL); - if (!keypad) - return -ENOMEM; - - input = input_allocate_device(); - if (!input) { - ret = -ENOMEM; - goto out_freekeypad; - } - - input->name = "STMPE keypad"; - input->id.bustype = BUS_I2C; - input->dev.parent = &pdev->dev; - - input_set_capability(input, EV_MSC, MSC_SCAN); - - __set_bit(EV_KEY, input->evbit); - if (!plat->no_autorepeat) - __set_bit(EV_REP, input->evbit); - - input->keycode = keypad->keymap; - input->keycodesize = sizeof(keypad->keymap[0]); - input->keycodemax = ARRAY_SIZE(keypad->keymap); - - matrix_keypad_build_keymap(plat->keymap_data, STMPE_KEYPAD_ROW_SHIFT, - input->keycode, input->keybit); - - for (i = 0; i < plat->keymap_data->keymap_size; i++) { - unsigned int key = plat->keymap_data->keymap[i]; - - keypad->cols |= 1 << KEY_COL(key); - keypad->rows |= 1 << KEY_ROW(key); - } - - keypad->stmpe = stmpe; - keypad->plat = plat; - keypad->input = input; - keypad->variant = &stmpe_keypad_variants[stmpe->partnum]; - - ret = stmpe_keypad_chip_init(keypad); - if (ret < 0) - goto out_freeinput; - - ret = input_register_device(input); - if (ret) { - dev_err(&pdev->dev, - "unable to register input device: %d\n", ret); - goto out_freeinput; - } - - ret = request_threaded_irq(irq, NULL, stmpe_keypad_irq, IRQF_ONESHOT, - "stmpe-keypad", keypad); - if (ret) { - dev_err(&pdev->dev, "unable to get irq: %d\n", ret); - goto out_unregisterinput; - } - - platform_set_drvdata(pdev, keypad); - - return 0; - -out_unregisterinput: - input_unregister_device(input); - input = NULL; -out_freeinput: - input_free_device(input); -out_freekeypad: - kfree(keypad); - return ret; -} - -static int __devexit stmpe_keypad_remove(struct platform_device *pdev) -{ - struct stmpe_keypad *keypad = platform_get_drvdata(pdev); - struct stmpe *stmpe = keypad->stmpe; - int irq = platform_get_irq(pdev, 0); - - stmpe_disable(stmpe, STMPE_BLOCK_KEYPAD); - - free_irq(irq, keypad); - input_unregister_device(keypad->input); - platform_set_drvdata(pdev, NULL); - kfree(keypad); - - return 0; -} - -static struct platform_driver stmpe_keypad_driver = { - .driver.name = "stmpe-keypad", - .driver.owner = THIS_MODULE, - .probe = stmpe_keypad_probe, - .remove = __devexit_p(stmpe_keypad_remove), -}; -module_platform_driver(stmpe_keypad_driver); - -MODULE_LICENSE("GPL v2"); -MODULE_DESCRIPTION("STMPExxxx keypad driver"); -MODULE_AUTHOR("Rabin Vincent <rabin.vincent@stericsson.com>"); |