*
* 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>.
+ * on some suggestions by Nicolas Pitre <nico@fluxnic.net>.
*
* 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
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/err.h>
+#include <linux/input/matrix_keypad.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>
-
+#include <mach/hardware.h>
+#include <mach/pxa27x_keypad.h>
/*
* Keypad Controller registers
*/
#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_MKRN(n) ((((n) - 1) & 0x7) << 26) /* matrix key row number */
+#define KPC_MKCN(n) ((((n) - 1) & 0x7) << 23) /* matrix key column number */
+#define KPC_DKN(n) ((((n) - 1) & 0x7) << 6) /* direct key number */
#define KPC_AS (0x1 << 30) /* Automatic Scan bit */
#define KPC_ASACT (0x1 << 29) /* Automatic Scan on Activity */
#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)
+#define MAX_MATRIX_KEY_NUM (MAX_MATRIX_KEY_ROWS * MAX_MATRIX_KEY_COLS)
+#define MAX_KEYPAD_KEYS (MAX_MATRIX_KEY_NUM + MAX_DIRECT_KEY_NUM)
struct pxa27x_keypad {
struct pxa27x_keypad_platform_data *pdata;
struct input_dev *input_dev;
void __iomem *mmio_base;
- /* matrix key code map */
- unsigned int matrix_keycodes[MAX_MATRIX_KEY_NUM];
+ int irq;
+
+ unsigned short keycodes[MAX_KEYPAD_KEYS];
+ int rotary_rel_code[2];
/* 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;
+ unsigned short keycode;
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;
+ for (i = 0; i < pdata->matrix_key_map_size; i++) {
+ unsigned int key = pdata->matrix_key_map[i];
+ unsigned int row = KEY_ROW(key);
+ unsigned int col = KEY_COL(key);
+ unsigned int scancode = MATRIX_SCAN_CODE(row, col,
+ MATRIX_ROW_SHIFT);
- keypad->matrix_keycodes[(row << 3) + col] = code;
- set_bit(code, input_dev->keybit);
+ keycode = KEY_VAL(key);
+ keypad->keycodes[scancode] = keycode;
+ __set_bit(keycode, 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);
-}
+ for (i = 0; i < pdata->direct_key_num; i++) {
+ keycode = pdata->direct_key_map[i];
+ keypad->keycodes[MAX_MATRIX_KEY_NUM + i] = keycode;
+ __set_bit(keycode, input_dev->keybit);
+ }
-static inline unsigned int lookup_matrix_keycode(
- struct pxa27x_keypad *keypad, int row, int col)
-{
- return keypad->matrix_keycodes[(row << 3) + col];
+ if (pdata->enable_rotary0) {
+ if (pdata->rotary0_up_key && pdata->rotary0_down_key) {
+ keycode = pdata->rotary0_up_key;
+ keypad->keycodes[MAX_MATRIX_KEY_NUM + 0] = keycode;
+ __set_bit(keycode, input_dev->keybit);
+
+ keycode = pdata->rotary0_down_key;
+ keypad->keycodes[MAX_MATRIX_KEY_NUM + 1] = keycode;
+ __set_bit(keycode, input_dev->keybit);
+
+ keypad->rotary_rel_code[0] = -1;
+ } else {
+ keypad->rotary_rel_code[0] = pdata->rotary0_rel_code;
+ __set_bit(pdata->rotary0_rel_code, input_dev->relbit);
+ }
+ }
+
+ if (pdata->enable_rotary1) {
+ if (pdata->rotary1_up_key && pdata->rotary1_down_key) {
+ keycode = pdata->rotary1_up_key;
+ keypad->keycodes[MAX_MATRIX_KEY_NUM + 2] = keycode;
+ __set_bit(keycode, input_dev->keybit);
+
+ keycode = pdata->rotary1_down_key;
+ keypad->keycodes[MAX_MATRIX_KEY_NUM + 3] = keycode;
+ __set_bit(keycode, input_dev->keybit);
+
+ keypad->rotary_rel_code[1] = -1;
+ } else {
+ keypad->rotary_rel_code[1] = pdata->rotary1_rel_code;
+ __set_bit(pdata->rotary1_rel_code, input_dev->relbit);
+ }
+ }
+
+ __clear_bit(KEY_RESERVED, input_dev->keybit);
}
static void pxa27x_keypad_scan_matrix(struct pxa27x_keypad *keypad)
{
struct pxa27x_keypad_platform_data *pdata = keypad->pdata;
+ struct input_dev *input_dev = keypad->input_dev;
int row, col, num_keys_pressed = 0;
uint32_t new_state[MAX_MATRIX_KEY_COLS];
uint32_t kpas = keypad_readl(KPAS);
scan:
for (col = 0; col < pdata->matrix_key_cols; col++) {
uint32_t bits_changed;
+ int code;
bits_changed = keypad->matrix_key_state[col] ^ new_state[col];
if (bits_changed == 0)
if ((bits_changed & (1 << row)) == 0)
continue;
- input_report_key(keypad->input_dev,
- lookup_matrix_keycode(keypad, row, col),
- new_state[col] & (1 << row));
+ code = MATRIX_SCAN_CODE(row, col, MATRIX_ROW_SHIFT);
+ input_event(input_dev, EV_MSC, MSC_SCAN, code);
+ input_report_key(input_dev, keypad->keycodes[code],
+ new_state[col] & (1 << row));
}
}
- input_sync(keypad->input_dev);
+ input_sync(input_dev);
memcpy(keypad->matrix_key_state, new_state, sizeof(new_state));
}
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];
+ if (keypad->rotary_rel_code[r] == -1) {
+ int code = MAX_MATRIX_KEY_NUM + 2 * r + (delta > 0 ? 0 : 1);
+ unsigned char keycode = keypad->keycodes[code];
/* simulate a press-n-release */
+ input_event(dev, EV_MSC, MSC_SCAN, code);
input_report_key(dev, keycode, 1);
input_sync(dev);
+ input_event(dev, EV_MSC, MSC_SCAN, code);
input_report_key(dev, keycode, 0);
input_sync(dev);
} else {
static void pxa27x_keypad_scan_direct(struct pxa27x_keypad *keypad)
{
struct pxa27x_keypad_platform_data *pdata = keypad->pdata;
+ struct input_dev *input_dev = keypad->input_dev;
unsigned int new_state;
uint32_t kpdk, bits_changed;
int i;
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;
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)));
+ if (bits_changed & (1 << i)) {
+ int code = MAX_MATRIX_KEY_NUM + i;
+
+ input_event(input_dev, EV_MSC, MSC_SCAN, code);
+ input_report_key(input_dev, keypad->keycodes[code],
+ new_state & (1 << i));
+ }
}
- input_sync(keypad->input_dev);
+ input_sync(input_dev);
keypad->direct_key_state = new_state;
}
}
#ifdef CONFIG_PM
-static int pxa27x_keypad_suspend(struct platform_device *pdev, pm_message_t state)
+static int pxa27x_keypad_suspend(struct device *dev)
{
+ struct platform_device *pdev = to_platform_device(dev);
struct pxa27x_keypad *keypad = platform_get_drvdata(pdev);
clk_disable(keypad->clk);
+
+ if (device_may_wakeup(&pdev->dev))
+ enable_irq_wake(keypad->irq);
+
return 0;
}
-static int pxa27x_keypad_resume(struct platform_device *pdev)
+static int pxa27x_keypad_resume(struct device *dev)
{
+ struct platform_device *pdev = to_platform_device(dev);
struct pxa27x_keypad *keypad = platform_get_drvdata(pdev);
struct input_dev *input_dev = keypad->input_dev;
+ if (device_may_wakeup(&pdev->dev))
+ disable_irq_wake(keypad->irq);
+
mutex_lock(&input_dev->mutex);
if (input_dev->users) {
return 0;
}
-#else
-#define pxa27x_keypad_suspend NULL
-#define pxa27x_keypad_resume NULL
-#endif
-#define res_size(res) ((res)->end - (res)->start + 1)
+static const struct dev_pm_ops pxa27x_keypad_pm_ops = {
+ .suspend = pxa27x_keypad_suspend,
+ .resume = pxa27x_keypad_resume,
+};
+#endif
static int __devinit pxa27x_keypad_probe(struct platform_device *pdev)
{
+ struct pxa27x_keypad_platform_data *pdata = pdev->dev.platform_data;
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) {
+ if (pdata == NULL) {
dev_err(&pdev->dev, "no platform data defined\n");
- error = -EINVAL;
- goto failed_free;
+ return -EINVAL;
}
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
dev_err(&pdev->dev, "failed to get keypad irq\n");
- error = -ENXIO;
- goto failed_free;
+ return -ENXIO;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (res == NULL) {
dev_err(&pdev->dev, "failed to get I/O memory\n");
- error = -ENXIO;
+ return -ENXIO;
+ }
+
+ keypad = kzalloc(sizeof(struct pxa27x_keypad), GFP_KERNEL);
+ input_dev = input_allocate_device();
+ if (!keypad || !input_dev) {
+ dev_err(&pdev->dev, "failed to allocate memory\n");
+ error = -ENOMEM;
goto failed_free;
}
- res = request_mem_region(res->start, res_size(res), pdev->name);
+ keypad->pdata = pdata;
+ keypad->input_dev = input_dev;
+ keypad->irq = irq;
+
+ res = request_mem_region(res->start, resource_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));
+ keypad->mmio_base = ioremap(res->start, resource_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");
+ keypad->clk = clk_get(&pdev->dev, NULL);
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_dev->keycode = keypad->keycodes;
+ input_dev->keycodesize = sizeof(keypad->keycodes[0]);
+ input_dev->keycodemax = ARRAY_SIZE(keypad->keycodes);
+
input_set_drvdata(input_dev, keypad);
- input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) |
- BIT_MASK(EV_REL);
+ input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
+ input_set_capability(input_dev, EV_MSC, MSC_SCAN);
pxa27x_keypad_build_keycode(keypad);
- platform_set_drvdata(pdev, keypad);
+
+ if ((pdata->enable_rotary0 && keypad->rotary_rel_code[0] != -1) ||
+ (pdata->enable_rotary1 && keypad->rotary_rel_code[1] != -1)) {
+ input_dev->evbit[0] |= BIT_MASK(EV_REL);
+ }
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;
+ goto failed_put_clk;
}
/* Register the input device */
goto failed_free_irq;
}
+ platform_set_drvdata(pdev, keypad);
+ device_init_wakeup(&pdev->dev, 1);
+
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));
+ release_mem_region(res->start, resource_size(res));
failed_free:
+ input_free_device(input_dev);
kfree(keypad);
return error;
}
struct pxa27x_keypad *keypad = platform_get_drvdata(pdev);
struct resource *res;
- free_irq(platform_get_irq(pdev, 0), pdev);
-
- clk_disable(keypad->clk);
+ free_irq(keypad->irq, pdev);
clk_put(keypad->clk);
input_unregister_device(keypad->input_dev);
iounmap(keypad->mmio_base);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- release_mem_region(res->start, res_size(res));
+ release_mem_region(res->start, resource_size(res));
platform_set_drvdata(pdev, NULL);
kfree(keypad);
+
return 0;
}
+/* work with hotplug and coldplug */
+MODULE_ALIAS("platform:pxa27x-keypad");
+
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",
+ .owner = THIS_MODULE,
+#ifdef CONFIG_PM
+ .pm = &pxa27x_keypad_pm_ops,
+#endif
},
};
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff