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path: root/ANDROID_3.4.5/drivers/input/keyboard/spear-keyboard.c
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Diffstat (limited to 'ANDROID_3.4.5/drivers/input/keyboard/spear-keyboard.c')
-rw-r--r--ANDROID_3.4.5/drivers/input/keyboard/spear-keyboard.c333
1 files changed, 0 insertions, 333 deletions
diff --git a/ANDROID_3.4.5/drivers/input/keyboard/spear-keyboard.c b/ANDROID_3.4.5/drivers/input/keyboard/spear-keyboard.c
deleted file mode 100644
index 3b6b528f..00000000
--- a/ANDROID_3.4.5/drivers/input/keyboard/spear-keyboard.c
+++ /dev/null
@@ -1,333 +0,0 @@
-/*
- * SPEAr Keyboard Driver
- * Based on omap-keypad driver
- *
- * Copyright (C) 2010 ST Microelectronics
- * Rajeev Kumar<rajeev-dlh.kumar@st.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#include <linux/clk.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/input.h>
-#include <linux/io.h>
-#include <linux/irq.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/pm_wakeup.h>
-#include <linux/slab.h>
-#include <linux/types.h>
-#include <plat/keyboard.h>
-
-/* Keyboard Registers */
-#define MODE_REG 0x00 /* 16 bit reg */
-#define STATUS_REG 0x0C /* 2 bit reg */
-#define DATA_REG 0x10 /* 8 bit reg */
-#define INTR_MASK 0x54
-
-/* Register Values */
-/*
- * pclk freq mask = (APB FEQ -1)= 82 MHZ.Programme bit 15-9 in mode
- * control register as 1010010(82MHZ)
- */
-#define PCLK_FREQ_MSK 0xA400 /* 82 MHz */
-#define START_SCAN 0x0100
-#define SCAN_RATE_10 0x0000
-#define SCAN_RATE_20 0x0004
-#define SCAN_RATE_40 0x0008
-#define SCAN_RATE_80 0x000C
-#define MODE_KEYBOARD 0x0002
-#define DATA_AVAIL 0x2
-
-#define KEY_MASK 0xFF000000
-#define KEY_VALUE 0x00FFFFFF
-#define ROW_MASK 0xF0
-#define COLUMN_MASK 0x0F
-#define ROW_SHIFT 4
-#define KEY_MATRIX_SHIFT 6
-
-struct spear_kbd {
- struct input_dev *input;
- struct resource *res;
- void __iomem *io_base;
- struct clk *clk;
- unsigned int irq;
- unsigned int mode;
- unsigned short last_key;
- unsigned short keycodes[256];
-};
-
-static irqreturn_t spear_kbd_interrupt(int irq, void *dev_id)
-{
- struct spear_kbd *kbd = dev_id;
- struct input_dev *input = kbd->input;
- unsigned int key;
- u8 sts, val;
-
- sts = readb(kbd->io_base + STATUS_REG);
- if (!(sts & DATA_AVAIL))
- return IRQ_NONE;
-
- if (kbd->last_key != KEY_RESERVED) {
- input_report_key(input, kbd->last_key, 0);
- kbd->last_key = KEY_RESERVED;
- }
-
- /* following reads active (row, col) pair */
- val = readb(kbd->io_base + DATA_REG);
- key = kbd->keycodes[val];
-
- input_event(input, EV_MSC, MSC_SCAN, val);
- input_report_key(input, key, 1);
- input_sync(input);
-
- kbd->last_key = key;
-
- /* clear interrupt */
- writeb(0, kbd->io_base + STATUS_REG);
-
- return IRQ_HANDLED;
-}
-
-static int spear_kbd_open(struct input_dev *dev)
-{
- struct spear_kbd *kbd = input_get_drvdata(dev);
- int error;
- u16 val;
-
- kbd->last_key = KEY_RESERVED;
-
- error = clk_enable(kbd->clk);
- if (error)
- return error;
-
- /* program keyboard */
- val = SCAN_RATE_80 | MODE_KEYBOARD | PCLK_FREQ_MSK |
- (kbd->mode << KEY_MATRIX_SHIFT);
- writew(val, kbd->io_base + MODE_REG);
- writeb(1, kbd->io_base + STATUS_REG);
-
- /* start key scan */
- val = readw(kbd->io_base + MODE_REG);
- val |= START_SCAN;
- writew(val, kbd->io_base + MODE_REG);
-
- return 0;
-}
-
-static void spear_kbd_close(struct input_dev *dev)
-{
- struct spear_kbd *kbd = input_get_drvdata(dev);
- u16 val;
-
- /* stop key scan */
- val = readw(kbd->io_base + MODE_REG);
- val &= ~START_SCAN;
- writew(val, kbd->io_base + MODE_REG);
-
- clk_disable(kbd->clk);
-
- kbd->last_key = KEY_RESERVED;
-}
-
-static int __devinit spear_kbd_probe(struct platform_device *pdev)
-{
- const struct kbd_platform_data *pdata = pdev->dev.platform_data;
- const struct matrix_keymap_data *keymap;
- struct spear_kbd *kbd;
- struct input_dev *input_dev;
- struct resource *res;
- int irq;
- int error;
-
- if (!pdata) {
- dev_err(&pdev->dev, "Invalid platform data\n");
- return -EINVAL;
- }
-
- keymap = pdata->keymap;
- if (!keymap) {
- dev_err(&pdev->dev, "no keymap defined\n");
- return -EINVAL;
- }
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(&pdev->dev, "no keyboard resource defined\n");
- return -EBUSY;
- }
-
- irq = platform_get_irq(pdev, 0);
- if (irq < 0) {
- dev_err(&pdev->dev, "not able to get irq for the device\n");
- return irq;
- }
-
- kbd = kzalloc(sizeof(*kbd), GFP_KERNEL);
- input_dev = input_allocate_device();
- if (!kbd || !input_dev) {
- dev_err(&pdev->dev, "out of memory\n");
- error = -ENOMEM;
- goto err_free_mem;
- }
-
- kbd->input = input_dev;
- kbd->irq = irq;
- kbd->mode = pdata->mode;
-
- kbd->res = request_mem_region(res->start, resource_size(res),
- pdev->name);
- if (!kbd->res) {
- dev_err(&pdev->dev, "keyboard region already claimed\n");
- error = -EBUSY;
- goto err_free_mem;
- }
-
- kbd->io_base = ioremap(res->start, resource_size(res));
- if (!kbd->io_base) {
- dev_err(&pdev->dev, "ioremap failed for kbd_region\n");
- error = -ENOMEM;
- goto err_release_mem_region;
- }
-
- kbd->clk = clk_get(&pdev->dev, NULL);
- if (IS_ERR(kbd->clk)) {
- error = PTR_ERR(kbd->clk);
- goto err_iounmap;
- }
-
- input_dev->name = "Spear Keyboard";
- input_dev->phys = "keyboard/input0";
- 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 = 0x0100;
- input_dev->open = spear_kbd_open;
- input_dev->close = spear_kbd_close;
-
- __set_bit(EV_KEY, input_dev->evbit);
- if (pdata->rep)
- __set_bit(EV_REP, input_dev->evbit);
- input_set_capability(input_dev, EV_MSC, MSC_SCAN);
-
- input_dev->keycode = kbd->keycodes;
- input_dev->keycodesize = sizeof(kbd->keycodes[0]);
- input_dev->keycodemax = ARRAY_SIZE(kbd->keycodes);
-
- matrix_keypad_build_keymap(keymap, ROW_SHIFT,
- input_dev->keycode, input_dev->keybit);
-
- input_set_drvdata(input_dev, kbd);
-
- error = request_irq(irq, spear_kbd_interrupt, 0, "keyboard", kbd);
- if (error) {
- dev_err(&pdev->dev, "request_irq fail\n");
- goto err_put_clk;
- }
-
- error = input_register_device(input_dev);
- if (error) {
- dev_err(&pdev->dev, "Unable to register keyboard device\n");
- goto err_free_irq;
- }
-
- device_init_wakeup(&pdev->dev, 1);
- platform_set_drvdata(pdev, kbd);
-
- return 0;
-
-err_free_irq:
- free_irq(kbd->irq, kbd);
-err_put_clk:
- clk_put(kbd->clk);
-err_iounmap:
- iounmap(kbd->io_base);
-err_release_mem_region:
- release_mem_region(res->start, resource_size(res));
-err_free_mem:
- input_free_device(input_dev);
- kfree(kbd);
-
- return error;
-}
-
-static int __devexit spear_kbd_remove(struct platform_device *pdev)
-{
- struct spear_kbd *kbd = platform_get_drvdata(pdev);
-
- free_irq(kbd->irq, kbd);
- input_unregister_device(kbd->input);
- clk_put(kbd->clk);
- iounmap(kbd->io_base);
- release_mem_region(kbd->res->start, resource_size(kbd->res));
- kfree(kbd);
-
- device_init_wakeup(&pdev->dev, 1);
- platform_set_drvdata(pdev, NULL);
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int spear_kbd_suspend(struct device *dev)
-{
- struct platform_device *pdev = to_platform_device(dev);
- struct spear_kbd *kbd = platform_get_drvdata(pdev);
- struct input_dev *input_dev = kbd->input;
-
- mutex_lock(&input_dev->mutex);
-
- if (input_dev->users)
- clk_enable(kbd->clk);
-
- if (device_may_wakeup(&pdev->dev))
- enable_irq_wake(kbd->irq);
-
- mutex_unlock(&input_dev->mutex);
-
- return 0;
-}
-
-static int spear_kbd_resume(struct device *dev)
-{
- struct platform_device *pdev = to_platform_device(dev);
- struct spear_kbd *kbd = platform_get_drvdata(pdev);
- struct input_dev *input_dev = kbd->input;
-
- mutex_lock(&input_dev->mutex);
-
- if (device_may_wakeup(&pdev->dev))
- disable_irq_wake(kbd->irq);
-
- if (input_dev->users)
- clk_enable(kbd->clk);
-
- mutex_unlock(&input_dev->mutex);
-
- return 0;
-}
-#endif
-
-static SIMPLE_DEV_PM_OPS(spear_kbd_pm_ops, spear_kbd_suspend, spear_kbd_resume);
-
-static struct platform_driver spear_kbd_driver = {
- .probe = spear_kbd_probe,
- .remove = __devexit_p(spear_kbd_remove),
- .driver = {
- .name = "keyboard",
- .owner = THIS_MODULE,
- .pm = &spear_kbd_pm_ops,
- },
-};
-module_platform_driver(spear_kbd_driver);
-
-MODULE_AUTHOR("Rajeev Kumar");
-MODULE_DESCRIPTION("SPEAr Keyboard Driver");
-MODULE_LICENSE("GPL");
generated by cgit (git 2.34.1) at 2025-01-23 17:45:32 +0000