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Commit 03366e7b authored by Dmitry Torokhov's avatar Dmitry Torokhov
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Merge branch 'pxa-keypad'

parents c18bab80 e0f2677f
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Showing with 633 additions and 292 deletions
drivers/input/keyboard/Kconfig
View file @ 03366e7b
......@@ -260,13 +260,13 @@ config KEYBOARD_OMAP
module will be called omap-keypad.
config KEYBOARD_PXA27x
tristate "PXA27x keyboard support"
depends on PXA27x
tristate "PXA27x/PXA3xx keypad support"
depends on PXA27x || PXA3xx
help
Enable support for PXA27x matrix keyboard controller
Enable support for PXA27x/PXA3xx keypad controller
To compile this driver as a module, choose M here: the
module will be called pxa27x_keyboard.
module will be called pxa27x_keypad.
config KEYBOARD_AAED2000
tristate "AAED-2000 keyboard"
......
drivers/input/keyboard/Makefile
View file @ 03366e7b
......@@ -19,7 +19,7 @@ obj-$(CONFIG_KEYBOARD_TOSA) += tosakbd.o
obj-$(CONFIG_KEYBOARD_HIL) += hil_kbd.o
obj-$(CONFIG_KEYBOARD_HIL_OLD) += hilkbd.o
obj-$(CONFIG_KEYBOARD_OMAP) += omap-keypad.o
obj-$(CONFIG_KEYBOARD_PXA27x) += pxa27x_keyboard.o
obj-$(CONFIG_KEYBOARD_PXA27x) += pxa27x_keypad.o
obj-$(CONFIG_KEYBOARD_AAED2000) += aaed2000_kbd.o
obj-$(CONFIG_KEYBOARD_GPIO) += gpio_keys.o
obj-$(CONFIG_KEYBOARD_HP6XX) += jornada680_kbd.o
......
drivers/input/keyboard/pxa27x_keyboard.c deleted 100644 → 0
View file @ c18bab80
/*
* 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");
drivers/input/keyboard/pxa27x_keypad.c 0 → 100644
View file @ 03366e7b
/*
* linux/drivers/input/keyboard/pxa27x_keypad.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/pxa27x_keypad.h>
/*
* Keypad Controller registers
*/
#define KPC 0x0000 /* Keypad Control register */
#define KPDK 0x0008 /* Keypad Direct Key register */
#define KPREC 0x0010 /* Keypad Rotary Encoder register */
#define KPMK 0x0018 /* Keypad Matrix Key register */
#define KPAS 0x0020 /* Keypad Automatic Scan register */
/* Keypad Automatic Scan Multiple Key Presser register 0-3 */
#define KPASMKP0 0x0028
#define KPASMKP1 0x0030
#define KPASMKP2 0x0038
#define KPASMKP3 0x0040
#define KPKDI 0x0048
/* bit definitions */
#define KPC_MKRN(n) ((((n) & 0x7) - 1) << 26) /* matrix key row number */
#define KPC_MKCN(n) ((((n) & 0x7) - 1) << 23) /* matrix key column number */
#define KPC_DKN(n) ((((n) & 0x7) - 1) << 6) /* direct key number */
#define KPC_AS (0x1 << 30) /* Automatic Scan bit */
#define KPC_ASACT (0x1 << 29) /* Automatic Scan on Activity */
#define KPC_MI (0x1 << 22) /* Matrix interrupt bit */
#define KPC_IMKP (0x1 << 21) /* Ignore Multiple Key Press */
#define KPC_MS(n) (0x1 << (13 + (n))) /* Matrix scan line 'n' */
#define KPC_MS_ALL (0xff << 13)
#define KPC_ME (0x1 << 12) /* Matrix Keypad Enable */
#define KPC_MIE (0x1 << 11) /* Matrix Interrupt Enable */
#define KPC_DK_DEB_SEL (0x1 << 9) /* Direct Keypad Debounce Select */
#define KPC_DI (0x1 << 5) /* Direct key interrupt bit */
#define KPC_RE_ZERO_DEB (0x1 << 4) /* Rotary Encoder Zero Debounce */
#define KPC_REE1 (0x1 << 3) /* Rotary Encoder1 Enable */
#define KPC_REE0 (0x1 << 2) /* Rotary Encoder0 Enable */
#define KPC_DE (0x1 << 1) /* Direct Keypad Enable */
#define KPC_DIE (0x1 << 0) /* Direct Keypad interrupt Enable */
#define KPDK_DKP (0x1 << 31)
#define KPDK_DK(n) ((n) & 0xff)
#define KPREC_OF1 (0x1 << 31)
#define kPREC_UF1 (0x1 << 30)
#define KPREC_OF0 (0x1 << 15)
#define KPREC_UF0 (0x1 << 14)
#define KPREC_RECOUNT0(n) ((n) & 0xff)
#define KPREC_RECOUNT1(n) (((n) >> 16) & 0xff)
#define KPMK_MKP (0x1 << 31)
#define KPAS_SO (0x1 << 31)
#define KPASMKPx_SO (0x1 << 31)
#define KPAS_MUKP(n) (((n) >> 26) & 0x1f)
#define KPAS_RP(n) (((n) >> 4) & 0xf)
#define KPAS_CP(n) ((n) & 0xf)
#define KPASMKP_MKC_MASK (0xff)
#define keypad_readl(off) __raw_readl(keypad->mmio_base + (off))
#define keypad_writel(off, v) __raw_writel((v), keypad->mmio_base + (off))
#define MAX_MATRIX_KEY_NUM (8 * 8)
struct pxa27x_keypad {
struct pxa27x_keypad_platform_data *pdata;
struct clk *clk;
struct input_dev *input_dev;
void __iomem *mmio_base;
/* matrix key code map */
unsigned int matrix_keycodes[MAX_MATRIX_KEY_NUM];
/* state row bits of each column scan */
uint32_t matrix_key_state[MAX_MATRIX_KEY_COLS];
uint32_t direct_key_state;
unsigned int direct_key_mask;
int rotary_rel_code[2];
int rotary_up_key[2];
int rotary_down_key[2];
};
static void pxa27x_keypad_build_keycode(struct pxa27x_keypad *keypad)
{
struct pxa27x_keypad_platform_data *pdata = keypad->pdata;
struct input_dev *input_dev = keypad->input_dev;
unsigned int *key;
int i;
key = &pdata->matrix_key_map[0];
for (i = 0; i < pdata->matrix_key_map_size; i++, key++) {
int row = ((*key) >> 28) & 0xf;
int col = ((*key) >> 24) & 0xf;
int code = (*key) & 0xffffff;
keypad->matrix_keycodes[(row << 3) + col] = code;
set_bit(code, input_dev->keybit);
}
keypad->rotary_up_key[0] = pdata->rotary0_up_key;
keypad->rotary_up_key[1] = pdata->rotary1_up_key;
keypad->rotary_down_key[0] = pdata->rotary0_down_key;
keypad->rotary_down_key[1] = pdata->rotary1_down_key;
keypad->rotary_rel_code[0] = pdata->rotary0_rel_code;
keypad->rotary_rel_code[1] = pdata->rotary1_rel_code;
if (pdata->rotary0_up_key && pdata->rotary0_down_key) {
set_bit(pdata->rotary0_up_key, input_dev->keybit);
set_bit(pdata->rotary0_down_key, input_dev->keybit);
} else
set_bit(pdata->rotary0_rel_code, input_dev->relbit);
if (pdata->rotary1_up_key && pdata->rotary1_down_key) {
set_bit(pdata->rotary1_up_key, input_dev->keybit);
set_bit(pdata->rotary1_down_key, input_dev->keybit);
} else
set_bit(pdata->rotary1_rel_code, input_dev->relbit);
}
static inline unsigned int lookup_matrix_keycode(
struct pxa27x_keypad *keypad, int row, int col)
{
return keypad->matrix_keycodes[(row << 3) + col];
}
static void pxa27x_keypad_scan_matrix(struct pxa27x_keypad *keypad)
{
struct pxa27x_keypad_platform_data *pdata = keypad->pdata;
int row, col, num_keys_pressed = 0;
uint32_t new_state[MAX_MATRIX_KEY_COLS];
uint32_t kpas = keypad_readl(KPAS);
num_keys_pressed = KPAS_MUKP(kpas);
memset(new_state, 0, sizeof(new_state));
if (num_keys_pressed == 0)
goto scan;
if (num_keys_pressed == 1) {
col = KPAS_CP(kpas);
row = KPAS_RP(kpas);
/* if invalid row/col, treat as no key pressed */
if (col >= pdata->matrix_key_cols ||
row >= pdata->matrix_key_rows)
goto scan;
new_state[col] = (1 << row);
goto scan;
}
if (num_keys_pressed > 1) {
uint32_t kpasmkp0 = keypad_readl(KPASMKP0);
uint32_t kpasmkp1 = keypad_readl(KPASMKP1);
uint32_t kpasmkp2 = keypad_readl(KPASMKP2);
uint32_t kpasmkp3 = keypad_readl(KPASMKP3);
new_state[0] = kpasmkp0 & KPASMKP_MKC_MASK;
new_state[1] = (kpasmkp0 >> 16) & KPASMKP_MKC_MASK;
new_state[2] = kpasmkp1 & KPASMKP_MKC_MASK;
new_state[3] = (kpasmkp1 >> 16) & KPASMKP_MKC_MASK;
new_state[4] = kpasmkp2 & KPASMKP_MKC_MASK;
new_state[5] = (kpasmkp2 >> 16) & KPASMKP_MKC_MASK;
new_state[6] = kpasmkp3 & KPASMKP_MKC_MASK;
new_state[7] = (kpasmkp3 >> 16) & KPASMKP_MKC_MASK;
}
scan:
for (col = 0; col < pdata->matrix_key_cols; col++) {
uint32_t bits_changed;
bits_changed = keypad->matrix_key_state[col] ^ new_state[col];
if (bits_changed == 0)
continue;
for (row = 0; row < pdata->matrix_key_rows; row++) {
if ((bits_changed & (1 << row)) == 0)
continue;
input_report_key(keypad->input_dev,
lookup_matrix_keycode(keypad, row, col),
new_state[col] & (1 << row));
}
}
input_sync(keypad->input_dev);
memcpy(keypad->matrix_key_state, new_state, sizeof(new_state));
}
#define DEFAULT_KPREC (0x007f007f)
static inline int rotary_delta(uint32_t kprec)
{
if (kprec & KPREC_OF0)
return (kprec & 0xff) + 0x7f;
else if (kprec & KPREC_UF0)
return (kprec & 0xff) - 0x7f - 0xff;
else
return (kprec & 0xff) - 0x7f;
}
static void report_rotary_event(struct pxa27x_keypad *keypad, int r, int delta)
{
struct input_dev *dev = keypad->input_dev;
if (delta == 0)
return;
if (keypad->rotary_up_key[r] && keypad->rotary_down_key[r]) {
int keycode = (delta > 0) ? keypad->rotary_up_key[r] :
keypad->rotary_down_key[r];
/* simulate a press-n-release */
input_report_key(dev, keycode, 1);
input_sync(dev);
input_report_key(dev, keycode, 0);
input_sync(dev);
} else {
input_report_rel(dev, keypad->rotary_rel_code[r], delta);
input_sync(dev);
}
}
static void pxa27x_keypad_scan_rotary(struct pxa27x_keypad *keypad)
{
struct pxa27x_keypad_platform_data *pdata = keypad->pdata;
uint32_t kprec;
/* read and reset to default count value */
kprec = keypad_readl(KPREC);
keypad_writel(KPREC, DEFAULT_KPREC);
if (pdata->enable_rotary0)
report_rotary_event(keypad, 0, rotary_delta(kprec));
if (pdata->enable_rotary1)
report_rotary_event(keypad, 1, rotary_delta(kprec >> 16));
}
static void pxa27x_keypad_scan_direct(struct pxa27x_keypad *keypad)
{
struct pxa27x_keypad_platform_data *pdata = keypad->pdata;
unsigned int new_state;
uint32_t kpdk, bits_changed;
int i;
kpdk = keypad_readl(KPDK);
if (pdata->enable_rotary0 || pdata->enable_rotary1)
pxa27x_keypad_scan_rotary(keypad);
if (pdata->direct_key_map == NULL)
return;
new_state = KPDK_DK(kpdk) & keypad->direct_key_mask;
bits_changed = keypad->direct_key_state ^ new_state;
if (bits_changed == 0)
return;
for (i = 0; i < pdata->direct_key_num; i++) {
if (bits_changed & (1 << i))
input_report_key(keypad->input_dev,
pdata->direct_key_map[i],
(new_state & (1 << i)));
}
input_sync(keypad->input_dev);
keypad->direct_key_state = new_state;
}
static irqreturn_t pxa27x_keypad_irq_handler(int irq, void *dev_id)
{
struct pxa27x_keypad *keypad = dev_id;
unsigned long kpc = keypad_readl(KPC);
if (kpc & KPC_DI)
pxa27x_keypad_scan_direct(keypad);
if (kpc & KPC_MI)
pxa27x_keypad_scan_matrix(keypad);
return IRQ_HANDLED;
}
static void pxa27x_keypad_config(struct pxa27x_keypad *keypad)
{
struct pxa27x_keypad_platform_data *pdata = keypad->pdata;
unsigned int mask = 0, direct_key_num = 0;
unsigned long kpc = 0;
/* enable matrix keys with automatic scan */
if (pdata->matrix_key_rows && pdata->matrix_key_cols) {
kpc |= KPC_ASACT | KPC_MIE | KPC_ME | KPC_MS_ALL;
kpc |= KPC_MKRN(pdata->matrix_key_rows) |
KPC_MKCN(pdata->matrix_key_cols);
}
/* enable rotary key, debounce interval same as direct keys */
if (pdata->enable_rotary0) {
mask |= 0x03;
direct_key_num = 2;
kpc |= KPC_REE0;
}
if (pdata->enable_rotary1) {
mask |= 0x0c;
direct_key_num = 4;
kpc |= KPC_REE1;
}
if (pdata->direct_key_num > direct_key_num)
direct_key_num = pdata->direct_key_num;
keypad->direct_key_mask = ((2 << direct_key_num) - 1) & ~mask;
/* enable direct key */
if (direct_key_num)
kpc |= KPC_DE | KPC_DIE | KPC_DKN(direct_key_num);
keypad_writel(KPC, kpc | KPC_RE_ZERO_DEB);
keypad_writel(KPREC, DEFAULT_KPREC);
keypad_writel(KPKDI, pdata->debounce_interval);
}
static int pxa27x_keypad_open(struct input_dev *dev)
{
struct pxa27x_keypad *keypad = input_get_drvdata(dev);
/* Enable unit clock */
clk_enable(keypad->clk);
pxa27x_keypad_config(keypad);
return 0;
}
static void pxa27x_keypad_close(struct input_dev *dev)
{
struct pxa27x_keypad *keypad = input_get_drvdata(dev);
/* Disable clock unit */
clk_disable(keypad->clk);
}
#ifdef CONFIG_PM
static int pxa27x_keypad_suspend(struct platform_device *pdev, pm_message_t state)
{
struct pxa27x_keypad *keypad = platform_get_drvdata(pdev);
clk_disable(keypad->clk);
return 0;
}
static int pxa27x_keypad_resume(struct platform_device *pdev)
{
struct pxa27x_keypad *keypad = platform_get_drvdata(pdev);
struct input_dev *input_dev = keypad->input_dev;
mutex_lock(&input_dev->mutex);
if (input_dev->users) {
/* Enable unit clock */
clk_enable(keypad->clk);
pxa27x_keypad_config(keypad);
}
mutex_unlock(&input_dev->mutex);
return 0;
}
#else
#define pxa27x_keypad_suspend NULL
#define pxa27x_keypad_resume NULL
#endif
#define res_size(res) ((res)->end - (res)->start + 1)
static int __devinit pxa27x_keypad_probe(struct platform_device *pdev)
{
struct pxa27x_keypad *keypad;
struct input_dev *input_dev;
struct resource *res;
int irq, error;
keypad = kzalloc(sizeof(struct pxa27x_keypad), GFP_KERNEL);
if (keypad == NULL) {
dev_err(&pdev->dev, "failed to allocate driver data\n");
return -ENOMEM;
}
keypad->pdata = pdev->dev.platform_data;
if (keypad->pdata == NULL) {
dev_err(&pdev->dev, "no platform data defined\n");
error = -EINVAL;
goto failed_free;
}
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
dev_err(&pdev->dev, "failed to get keypad irq\n");
error = -ENXIO;
goto failed_free;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (res == NULL) {
dev_err(&pdev->dev, "failed to get I/O memory\n");
error = -ENXIO;
goto failed_free;
}
res = request_mem_region(res->start, res_size(res), pdev->name);
if (res == NULL) {
dev_err(&pdev->dev, "failed to request I/O memory\n");
error = -EBUSY;
goto failed_free;
}
keypad->mmio_base = ioremap(res->start, res_size(res));
if (keypad->mmio_base == NULL) {
dev_err(&pdev->dev, "failed to remap I/O memory\n");
error = -ENXIO;
goto failed_free_mem;
}
keypad->clk = clk_get(&pdev->dev, "KBDCLK");
if (IS_ERR(keypad->clk)) {
dev_err(&pdev->dev, "failed to get keypad clock\n");
error = PTR_ERR(keypad->clk);
goto failed_free_io;
}
/* Create and register the input driver. */
input_dev = input_allocate_device();
if (!input_dev) {
dev_err(&pdev->dev, "failed to allocate input device\n");
error = -ENOMEM;
goto failed_put_clk;
}
input_dev->name = pdev->name;
input_dev->id.bustype = BUS_HOST;
input_dev->open = pxa27x_keypad_open;
input_dev->close = pxa27x_keypad_close;
input_dev->dev.parent = &pdev->dev;
keypad->input_dev = input_dev;
input_set_drvdata(input_dev, keypad);
input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) |
BIT_MASK(EV_REL);
pxa27x_keypad_build_keycode(keypad);
platform_set_drvdata(pdev, keypad);
error = request_irq(irq, pxa27x_keypad_irq_handler, IRQF_DISABLED,
pdev->name, keypad);
if (error) {
dev_err(&pdev->dev, "failed to request IRQ\n");
goto failed_free_dev;
}
/* Register the input device */
error = input_register_device(input_dev);
if (error) {
dev_err(&pdev->dev, "failed to register input device\n");
goto failed_free_irq;
}
return 0;
failed_free_irq:
free_irq(irq, pdev);
platform_set_drvdata(pdev, NULL);
failed_free_dev:
input_free_device(input_dev);
failed_put_clk:
clk_put(keypad->clk);
failed_free_io:
iounmap(keypad->mmio_base);
failed_free_mem:
release_mem_region(res->start, res_size(res));
failed_free:
kfree(keypad);
return error;
}
static int __devexit pxa27x_keypad_remove(struct platform_device *pdev)
{
struct pxa27x_keypad *keypad = platform_get_drvdata(pdev);
struct resource *res;
free_irq(platform_get_irq(pdev, 0), pdev);
clk_disable(keypad->clk);
clk_put(keypad->clk);
input_unregister_device(keypad->input_dev);
input_free_device(keypad->input_dev);
iounmap(keypad->mmio_base);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
release_mem_region(res->start, res_size(res));
platform_set_drvdata(pdev, NULL);
kfree(keypad);
return 0;
}
static struct platform_driver pxa27x_keypad_driver = {
.probe = pxa27x_keypad_probe,
.remove = __devexit_p(pxa27x_keypad_remove),
.suspend = pxa27x_keypad_suspend,
.resume = pxa27x_keypad_resume,
.driver = {
.name = "pxa27x-keypad",
},
};
static int __init pxa27x_keypad_init(void)
{
return platform_driver_register(&pxa27x_keypad_driver);
}
static void __exit pxa27x_keypad_exit(void)
{
platform_driver_unregister(&pxa27x_keypad_driver);
}
module_init(pxa27x_keypad_init);
module_exit(pxa27x_keypad_exit);
MODULE_DESCRIPTION("PXA27x Keypad Controller Driver");
MODULE_LICENSE("GPL");
include/asm-arm/arch-pxa/pxa27x_keyboard.h deleted 100644 → 0
View file @ c18bab80
#define PXAKBD_MAXROW 8
#define PXAKBD_MAXCOL 8
struct pxa27x_keyboard_platform_data {
int nr_rows, nr_cols;
int keycodes[PXAKBD_MAXROW][PXAKBD_MAXCOL];
int gpio_modes[PXAKBD_MAXROW + PXAKBD_MAXCOL];
#ifdef CONFIG_PM
u32 reg_kpc;
u32 reg_kprec;
#endif
};
include/asm-arm/arch-pxa/pxa27x_keypad.h 0 → 100644
View file @ 03366e7b
#ifndef __ASM_ARCH_PXA27x_KEYPAD_H
#define __ASM_ARCH_PXA27x_KEYPAD_H
#include <linux/input.h>
#define MAX_MATRIX_KEY_ROWS (8)
#define MAX_MATRIX_KEY_COLS (8)
/* pxa3xx keypad platform specific parameters
*
* NOTE:
* 1. direct_key_num indicates the number of keys in the direct keypad
* _plus_ the number of rotary-encoder sensor inputs, this can be
* left as 0 if only rotary encoders are enabled, the driver will
* automatically calculate this
*
* 2. direct_key_map is the key code map for the direct keys, if rotary
* encoder(s) are enabled, direct key 0/1(2/3) will be ignored
*
* 3. rotary can be either interpreted as a relative input event (e.g.
* REL_WHEEL/REL_HWHEEL) or specific keys (e.g. UP/DOWN/LEFT/RIGHT)
*
* 4. matrix key and direct key will use the same debounce_interval by
* default, which should be sufficient in most cases
*/
struct pxa27x_keypad_platform_data {
/* code map for the matrix keys */
unsigned int matrix_key_rows;
unsigned int matrix_key_cols;
unsigned int *matrix_key_map;
int matrix_key_map_size;
/* direct keys */
int direct_key_num;
unsigned int direct_key_map[8];
/* rotary encoders 0 */
int enable_rotary0;
int rotary0_rel_code;
int rotary0_up_key;
int rotary0_down_key;
/* rotary encoders 1 */
int enable_rotary1;
int rotary1_rel_code;
int rotary1_up_key;
int rotary1_down_key;
/* key debounce interval */
unsigned int debounce_interval;
};
#define KEY(row, col, val) (((row) << 28) | ((col) << 24) | (val))
#endif /* __ASM_ARCH_PXA27x_KEYPAD_H */
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