diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/input/keyboard/omap4-keypad.c')
-rw-r--r-- | ANDROID_3.4.5/drivers/input/keyboard/omap4-keypad.c | 343 |
1 files changed, 0 insertions, 343 deletions
diff --git a/ANDROID_3.4.5/drivers/input/keyboard/omap4-keypad.c b/ANDROID_3.4.5/drivers/input/keyboard/omap4-keypad.c deleted file mode 100644 index e809ac09..00000000 --- a/ANDROID_3.4.5/drivers/input/keyboard/omap4-keypad.c +++ /dev/null @@ -1,343 +0,0 @@ -/* - * OMAP4 Keypad Driver - * - * Copyright (C) 2010 Texas Instruments - * - * Author: Abraham Arce <x0066660@ti.com> - * Initial Code: Syed Rafiuddin <rafiuddin.syed@ti.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include <linux/module.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/platform_device.h> -#include <linux/errno.h> -#include <linux/io.h> -#include <linux/input.h> -#include <linux/slab.h> -#include <linux/pm_runtime.h> - -#include <linux/platform_data/omap4-keypad.h> - -/* OMAP4 registers */ -#define OMAP4_KBD_REVISION 0x00 -#define OMAP4_KBD_SYSCONFIG 0x10 -#define OMAP4_KBD_SYSSTATUS 0x14 -#define OMAP4_KBD_IRQSTATUS 0x18 -#define OMAP4_KBD_IRQENABLE 0x1C -#define OMAP4_KBD_WAKEUPENABLE 0x20 -#define OMAP4_KBD_PENDING 0x24 -#define OMAP4_KBD_CTRL 0x28 -#define OMAP4_KBD_DEBOUNCINGTIME 0x2C -#define OMAP4_KBD_LONGKEYTIME 0x30 -#define OMAP4_KBD_TIMEOUT 0x34 -#define OMAP4_KBD_STATEMACHINE 0x38 -#define OMAP4_KBD_ROWINPUTS 0x3C -#define OMAP4_KBD_COLUMNOUTPUTS 0x40 -#define OMAP4_KBD_FULLCODE31_0 0x44 -#define OMAP4_KBD_FULLCODE63_32 0x48 - -/* OMAP4 bit definitions */ -#define OMAP4_DEF_IRQENABLE_EVENTEN (1 << 0) -#define OMAP4_DEF_IRQENABLE_LONGKEY (1 << 1) -#define OMAP4_DEF_IRQENABLE_TIMEOUTEN (1 << 2) -#define OMAP4_DEF_WUP_EVENT_ENA (1 << 0) -#define OMAP4_DEF_WUP_LONG_KEY_ENA (1 << 1) -#define OMAP4_DEF_CTRL_NOSOFTMODE (1 << 1) -#define OMAP4_DEF_CTRLPTVVALUE (1 << 2) -#define OMAP4_DEF_CTRLPTV (1 << 1) - -/* OMAP4 values */ -#define OMAP4_VAL_IRQDISABLE 0x00 -#define OMAP4_VAL_DEBOUNCINGTIME 0x07 -#define OMAP4_VAL_FUNCTIONALCFG 0x1E - -#define OMAP4_MASK_IRQSTATUSDISABLE 0xFFFF - -struct omap4_keypad { - struct input_dev *input; - - void __iomem *base; - int irq; - - unsigned int rows; - unsigned int cols; - unsigned int row_shift; - unsigned char key_state[8]; - unsigned short keymap[]; -}; - -/* Interrupt handler */ -static irqreturn_t omap4_keypad_interrupt(int irq, void *dev_id) -{ - struct omap4_keypad *keypad_data = dev_id; - struct input_dev *input_dev = keypad_data->input; - unsigned char key_state[ARRAY_SIZE(keypad_data->key_state)]; - unsigned int col, row, code, changed; - u32 *new_state = (u32 *) key_state; - - /* Disable interrupts */ - __raw_writel(OMAP4_VAL_IRQDISABLE, - keypad_data->base + OMAP4_KBD_IRQENABLE); - - *new_state = __raw_readl(keypad_data->base + OMAP4_KBD_FULLCODE31_0); - *(new_state + 1) = __raw_readl(keypad_data->base - + OMAP4_KBD_FULLCODE63_32); - - for (row = 0; row < keypad_data->rows; row++) { - changed = key_state[row] ^ keypad_data->key_state[row]; - if (!changed) - continue; - - for (col = 0; col < keypad_data->cols; col++) { - if (changed & (1 << col)) { - code = MATRIX_SCAN_CODE(row, col, - keypad_data->row_shift); - input_event(input_dev, EV_MSC, MSC_SCAN, code); - input_report_key(input_dev, - keypad_data->keymap[code], - key_state[row] & (1 << col)); - } - } - } - - input_sync(input_dev); - - memcpy(keypad_data->key_state, key_state, - sizeof(keypad_data->key_state)); - - /* clear pending interrupts */ - __raw_writel(__raw_readl(keypad_data->base + OMAP4_KBD_IRQSTATUS), - keypad_data->base + OMAP4_KBD_IRQSTATUS); - - /* enable interrupts */ - __raw_writel(OMAP4_DEF_IRQENABLE_EVENTEN | OMAP4_DEF_IRQENABLE_LONGKEY, - keypad_data->base + OMAP4_KBD_IRQENABLE); - - return IRQ_HANDLED; -} - -static int omap4_keypad_open(struct input_dev *input) -{ - struct omap4_keypad *keypad_data = input_get_drvdata(input); - - pm_runtime_get_sync(input->dev.parent); - - disable_irq(keypad_data->irq); - - __raw_writel(OMAP4_VAL_FUNCTIONALCFG, - keypad_data->base + OMAP4_KBD_CTRL); - __raw_writel(OMAP4_VAL_DEBOUNCINGTIME, - keypad_data->base + OMAP4_KBD_DEBOUNCINGTIME); - __raw_writel(OMAP4_VAL_IRQDISABLE, - keypad_data->base + OMAP4_KBD_IRQSTATUS); - __raw_writel(OMAP4_DEF_IRQENABLE_EVENTEN | OMAP4_DEF_IRQENABLE_LONGKEY, - keypad_data->base + OMAP4_KBD_IRQENABLE); - __raw_writel(OMAP4_DEF_WUP_EVENT_ENA | OMAP4_DEF_WUP_LONG_KEY_ENA, - keypad_data->base + OMAP4_KBD_WAKEUPENABLE); - - enable_irq(keypad_data->irq); - - return 0; -} - -static void omap4_keypad_close(struct input_dev *input) -{ - struct omap4_keypad *keypad_data = input_get_drvdata(input); - - disable_irq(keypad_data->irq); - - /* Disable interrupts */ - __raw_writel(OMAP4_VAL_IRQDISABLE, - keypad_data->base + OMAP4_KBD_IRQENABLE); - - /* clear pending interrupts */ - __raw_writel(__raw_readl(keypad_data->base + OMAP4_KBD_IRQSTATUS), - keypad_data->base + OMAP4_KBD_IRQSTATUS); - - enable_irq(keypad_data->irq); - - pm_runtime_put_sync(input->dev.parent); -} - -static int __devinit omap4_keypad_probe(struct platform_device *pdev) -{ - const struct omap4_keypad_platform_data *pdata; - struct omap4_keypad *keypad_data; - struct input_dev *input_dev; - struct resource *res; - resource_size_t size; - unsigned int row_shift, max_keys; - int irq; - int error; - - /* platform data */ - pdata = pdev->dev.platform_data; - if (!pdata) { - dev_err(&pdev->dev, "no platform data defined\n"); - return -EINVAL; - } - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "no base address specified\n"); - return -EINVAL; - } - - irq = platform_get_irq(pdev, 0); - if (!irq) { - dev_err(&pdev->dev, "no keyboard irq assigned\n"); - return -EINVAL; - } - - if (!pdata->keymap_data) { - dev_err(&pdev->dev, "no keymap data defined\n"); - return -EINVAL; - } - - row_shift = get_count_order(pdata->cols); - max_keys = pdata->rows << row_shift; - - keypad_data = kzalloc(sizeof(struct omap4_keypad) + - max_keys * sizeof(keypad_data->keymap[0]), - GFP_KERNEL); - if (!keypad_data) { - dev_err(&pdev->dev, "keypad_data memory allocation failed\n"); - return -ENOMEM; - } - - size = resource_size(res); - - res = request_mem_region(res->start, size, pdev->name); - if (!res) { - dev_err(&pdev->dev, "can't request mem region\n"); - error = -EBUSY; - goto err_free_keypad; - } - - keypad_data->base = ioremap(res->start, resource_size(res)); - if (!keypad_data->base) { - dev_err(&pdev->dev, "can't ioremap mem resource\n"); - error = -ENOMEM; - goto err_release_mem; - } - - keypad_data->irq = irq; - keypad_data->row_shift = row_shift; - keypad_data->rows = pdata->rows; - keypad_data->cols = pdata->cols; - - /* input device allocation */ - keypad_data->input = input_dev = input_allocate_device(); - if (!input_dev) { - error = -ENOMEM; - goto err_unmap; - } - - input_dev->name = pdev->name; - input_dev->dev.parent = &pdev->dev; - input_dev->id.bustype = BUS_HOST; - input_dev->id.vendor = 0x0001; - input_dev->id.product = 0x0001; - input_dev->id.version = 0x0001; - - input_dev->open = omap4_keypad_open; - input_dev->close = omap4_keypad_close; - - input_dev->keycode = keypad_data->keymap; - input_dev->keycodesize = sizeof(keypad_data->keymap[0]); - input_dev->keycodemax = max_keys; - - __set_bit(EV_KEY, input_dev->evbit); - __set_bit(EV_REP, input_dev->evbit); - - input_set_capability(input_dev, EV_MSC, MSC_SCAN); - - input_set_drvdata(input_dev, keypad_data); - - matrix_keypad_build_keymap(pdata->keymap_data, row_shift, - input_dev->keycode, input_dev->keybit); - - error = request_irq(keypad_data->irq, omap4_keypad_interrupt, - IRQF_TRIGGER_RISING, - "omap4-keypad", keypad_data); - if (error) { - dev_err(&pdev->dev, "failed to register interrupt\n"); - goto err_free_input; - } - - pm_runtime_enable(&pdev->dev); - - error = input_register_device(keypad_data->input); - if (error < 0) { - dev_err(&pdev->dev, "failed to register input device\n"); - goto err_pm_disable; - } - - platform_set_drvdata(pdev, keypad_data); - return 0; - -err_pm_disable: - pm_runtime_disable(&pdev->dev); - free_irq(keypad_data->irq, keypad_data); -err_free_input: - input_free_device(input_dev); -err_unmap: - iounmap(keypad_data->base); -err_release_mem: - release_mem_region(res->start, size); -err_free_keypad: - kfree(keypad_data); - return error; -} - -static int __devexit omap4_keypad_remove(struct platform_device *pdev) -{ - struct omap4_keypad *keypad_data = platform_get_drvdata(pdev); - struct resource *res; - - free_irq(keypad_data->irq, keypad_data); - - pm_runtime_disable(&pdev->dev); - - input_unregister_device(keypad_data->input); - - iounmap(keypad_data->base); - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - release_mem_region(res->start, resource_size(res)); - - kfree(keypad_data); - platform_set_drvdata(pdev, NULL); - - return 0; -} - -static struct platform_driver omap4_keypad_driver = { - .probe = omap4_keypad_probe, - .remove = __devexit_p(omap4_keypad_remove), - .driver = { - .name = "omap4-keypad", - .owner = THIS_MODULE, - }, -}; -module_platform_driver(omap4_keypad_driver); - -MODULE_AUTHOR("Texas Instruments"); -MODULE_DESCRIPTION("OMAP4 Keypad Driver"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:omap4-keypad"); |