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path: root/drivers/input/keyboard/pxa27x_keyboard.c
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Diffstat (limited to 'drivers/input/keyboard/pxa27x_keyboard.c')
-rw-r--r--drivers/input/keyboard/pxa27x_keyboard.c274
1 files changed, 0 insertions, 274 deletions
diff --git a/drivers/input/keyboard/pxa27x_keyboard.c b/drivers/input/keyboard/pxa27x_keyboard.c
deleted file mode 100644
index bdd64ee..0000000
--- a/drivers/input/keyboard/pxa27x_keyboard.c
+++ /dev/null
@@ -1,274 +0,0 @@
-/*
- * linux/drivers/input/keyboard/pxa27x_keyboard.c
- *
- * Driver for the pxa27x matrix keyboard controller.
- *
- * Created: Feb 22, 2007
- * Author: Rodolfo Giometti <giometti@linux.it>
- *
- * Based on a previous implementations by Kevin O'Connor
- * <kevin_at_koconnor.net> and Alex Osborne <bobofdoom@gmail.com> and
- * on some suggestions by Nicolas Pitre <nico@cam.org>.
- *
- * 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/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/input.h>
-#include <linux/device.h>
-#include <linux/platform_device.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-
-#include <asm/mach-types.h>
-#include <asm/mach/arch.h>
-#include <asm/mach/map.h>
-
-#include <asm/arch/hardware.h>
-#include <asm/arch/pxa-regs.h>
-#include <asm/arch/irqs.h>
-#include <asm/arch/pxa27x_keyboard.h>
-
-#define DRIVER_NAME "pxa27x-keyboard"
-
-#define KPASMKP(col) (col/2 == 0 ? KPASMKP0 : \
- col/2 == 1 ? KPASMKP1 : \
- col/2 == 2 ? KPASMKP2 : KPASMKP3)
-#define KPASMKPx_MKC(row, col) (1 << (row + 16 * (col % 2)))
-
-static struct clk *pxakbd_clk;
-
-static irqreturn_t pxakbd_irq_handler(int irq, void *dev_id)
-{
- struct platform_device *pdev = dev_id;
- struct pxa27x_keyboard_platform_data *pdata = pdev->dev.platform_data;
- struct input_dev *input_dev = platform_get_drvdata(pdev);
- unsigned long kpc = KPC;
- int p, row, col, rel;
-
- if (kpc & KPC_DI) {
- unsigned long kpdk = KPDK;
-
- if (!(kpdk & KPDK_DKP)) {
- /* better luck next time */
- } else if (kpc & KPC_REE0) {
- unsigned long kprec = KPREC;
- KPREC = 0x7f;
-
- if (kprec & KPREC_OF0)
- rel = (kprec & 0xff) + 0x7f;
- else if (kprec & KPREC_UF0)
- rel = (kprec & 0xff) - 0x7f - 0xff;
- else
- rel = (kprec & 0xff) - 0x7f;
-
- if (rel) {
- input_report_rel(input_dev, REL_WHEEL, rel);
- input_sync(input_dev);
- }
- }
- }
-
- if (kpc & KPC_MI) {
- /* report the status of every button */
- for (row = 0; row < pdata->nr_rows; row++) {
- for (col = 0; col < pdata->nr_cols; col++) {
- p = KPASMKP(col) & KPASMKPx_MKC(row, col) ?
- 1 : 0;
- pr_debug("keycode %x - pressed %x\n",
- pdata->keycodes[row][col], p);
- input_report_key(input_dev,
- pdata->keycodes[row][col], p);
- }
- }
- input_sync(input_dev);
- }
-
- return IRQ_HANDLED;
-}
-
-static int pxakbd_open(struct input_dev *dev)
-{
- /* Set keypad control register */
- KPC |= (KPC_ASACT |
- KPC_MS_ALL |
- (2 << 6) | KPC_REE0 | KPC_DK_DEB_SEL |
- KPC_ME | KPC_MIE | KPC_DE | KPC_DIE);
-
- KPC &= ~KPC_AS; /* disable automatic scan */
- KPC &= ~KPC_IMKP; /* do not ignore multiple keypresses */
-
- /* Set rotary count to mid-point value */
- KPREC = 0x7F;
-
- /* Enable unit clock */
- clk_enable(pxakbd_clk);
-
- return 0;
-}
-
-static void pxakbd_close(struct input_dev *dev)
-{
- /* Disable clock unit */
- clk_disable(pxakbd_clk);
-}
-
-#ifdef CONFIG_PM
-static int pxakbd_suspend(struct platform_device *pdev, pm_message_t state)
-{
- struct pxa27x_keyboard_platform_data *pdata = pdev->dev.platform_data;
-
- /* Save controller status */
- pdata->reg_kpc = KPC;
- pdata->reg_kprec = KPREC;
-
- return 0;
-}
-
-static int pxakbd_resume(struct platform_device *pdev)
-{
- struct pxa27x_keyboard_platform_data *pdata = pdev->dev.platform_data;
- struct input_dev *input_dev = platform_get_drvdata(pdev);
-
- mutex_lock(&input_dev->mutex);
-
- if (input_dev->users) {
- /* Restore controller status */
- KPC = pdata->reg_kpc;
- KPREC = pdata->reg_kprec;
-
- /* Enable unit clock */
- clk_disable(pxakbd_clk);
- clk_enable(pxakbd_clk);
- }
-
- mutex_unlock(&input_dev->mutex);
-
- return 0;
-}
-#else
-#define pxakbd_suspend NULL
-#define pxakbd_resume NULL
-#endif
-
-static int __devinit pxakbd_probe(struct platform_device *pdev)
-{
- struct pxa27x_keyboard_platform_data *pdata = pdev->dev.platform_data;
- struct input_dev *input_dev;
- int i, row, col, error;
-
- pxakbd_clk = clk_get(&pdev->dev, "KBDCLK");
- if (IS_ERR(pxakbd_clk)) {
- error = PTR_ERR(pxakbd_clk);
- goto err_clk;
- }
-
- /* Create and register the input driver. */
- input_dev = input_allocate_device();
- if (!input_dev) {
- printk(KERN_ERR "Cannot request keypad device\n");
- error = -ENOMEM;
- goto err_alloc;
- }
-
- input_dev->name = DRIVER_NAME;
- input_dev->id.bustype = BUS_HOST;
- input_dev->open = pxakbd_open;
- input_dev->close = pxakbd_close;
- input_dev->dev.parent = &pdev->dev;
-
- input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) |
- BIT_MASK(EV_REL);
- input_dev->relbit[BIT_WORD(REL_WHEEL)] = BIT_MASK(REL_WHEEL);
- for (row = 0; row < pdata->nr_rows; row++) {
- for (col = 0; col < pdata->nr_cols; col++) {
- int code = pdata->keycodes[row][col];
- if (code > 0)
- set_bit(code, input_dev->keybit);
- }
- }
-
- error = request_irq(IRQ_KEYPAD, pxakbd_irq_handler, IRQF_DISABLED,
- DRIVER_NAME, pdev);
- if (error) {
- printk(KERN_ERR "Cannot request keypad IRQ\n");
- goto err_free_dev;
- }
-
- platform_set_drvdata(pdev, input_dev);
-
- /* Register the input device */
- error = input_register_device(input_dev);
- if (error)
- goto err_free_irq;
-
- /* Setup GPIOs. */
- for (i = 0; i < pdata->nr_rows + pdata->nr_cols; i++)
- pxa_gpio_mode(pdata->gpio_modes[i]);
-
- /*
- * Store rows/cols info into keyboard registers.
- */
-
- KPC |= (pdata->nr_rows - 1) << 26;
- KPC |= (pdata->nr_cols - 1) << 23;
-
- for (col = 0; col < pdata->nr_cols; col++)
- KPC |= KPC_MS0 << col;
-
- return 0;
-
- err_free_irq:
- platform_set_drvdata(pdev, NULL);
- free_irq(IRQ_KEYPAD, pdev);
- err_free_dev:
- input_free_device(input_dev);
- err_alloc:
- clk_put(pxakbd_clk);
- err_clk:
- return error;
-}
-
-static int __devexit pxakbd_remove(struct platform_device *pdev)
-{
- struct input_dev *input_dev = platform_get_drvdata(pdev);
-
- input_unregister_device(input_dev);
- free_irq(IRQ_KEYPAD, pdev);
- clk_put(pxakbd_clk);
- platform_set_drvdata(pdev, NULL);
-
- return 0;
-}
-
-static struct platform_driver pxakbd_driver = {
- .probe = pxakbd_probe,
- .remove = __devexit_p(pxakbd_remove),
- .suspend = pxakbd_suspend,
- .resume = pxakbd_resume,
- .driver = {
- .name = DRIVER_NAME,
- },
-};
-
-static int __init pxakbd_init(void)
-{
- return platform_driver_register(&pxakbd_driver);
-}
-
-static void __exit pxakbd_exit(void)
-{
- platform_driver_unregister(&pxakbd_driver);
-}
-
-module_init(pxakbd_init);
-module_exit(pxakbd_exit);
-
-MODULE_DESCRIPTION("PXA27x Matrix Keyboard Driver");
-MODULE_LICENSE("GPL");
generated by cgit v0.10.2 at 2024-07-16 10:50:48 (GMT)