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-rw-r--r--drivers/input/keyboard/Kconfig19
-rw-r--r--drivers/input/keyboard/Makefile5
-rw-r--r--drivers/input/keyboard/gpio_keys.c147
-rw-r--r--drivers/input/keyboard/hilkbd.c114
4 files changed, 232 insertions, 53 deletions
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index 049f2f544e75..1b81a72e19d9 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -135,12 +135,12 @@ config KEYBOARD_STOWAWAY
config KEYBOARD_CORGI
tristate "Corgi keyboard"
depends on PXA_SHARPSL
- default y
+ default y
help
- Say Y here to enable the keyboard on the Sharp Zaurus SL-C7xx
+ Say Y here to enable the keyboard on the Sharp Zaurus SL-C7xx
series of PDAs.
- To compile this driver as a module, choose M here: the
+ To compile this driver as a module, choose M here: the
module will be called corgikbd.
config KEYBOARD_SPITZ
@@ -214,4 +214,17 @@ config KEYBOARD_AAED2000
To compile this driver as a module, choose M here: the
module will be called aaed2000_kbd.
+config KEYBOARD_GPIO
+ tristate "Buttons on CPU GPIOs (PXA)"
+ depends on ARCH_PXA
+ help
+ This driver implements support for buttons connected
+ directly to GPIO pins of PXA CPUs.
+
+ Say Y here if your device has buttons connected
+ directly to GPIO pins of the CPU.
+
+ To compile this driver as a module, choose M here: the
+ module will be called gpio-keys.
+
endif
diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile
index 568797907347..586a0fe53be6 100644
--- a/drivers/input/keyboard/Makefile
+++ b/drivers/input/keyboard/Makefile
@@ -16,6 +16,7 @@ obj-$(CONFIG_KEYBOARD_CORGI) += corgikbd.o
obj-$(CONFIG_KEYBOARD_SPITZ) += spitzkbd.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_AAED2000) += aaed2000_kbd.o
+obj-$(CONFIG_KEYBOARD_OMAP) += omap-keypad.o
+obj-$(CONFIG_KEYBOARD_AAED2000) += aaed2000_kbd.o
+obj-$(CONFIG_KEYBOARD_GPIO) += gpio_keys.o
diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
new file mode 100644
index 000000000000..3a8f1b427a7f
--- /dev/null
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -0,0 +1,147 @@
+/*
+ * Driver for keys on GPIO lines capable of generating interrupts.
+ *
+ * Copyright 2005 Phil Blundell
+ *
+ * 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/module.h>
+#include <linux/version.h>
+
+#include <linux/init.h>
+#include <linux/fs.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/sched.h>
+#include <linux/pm.h>
+#include <linux/sysctl.h>
+#include <linux/proc_fs.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/input.h>
+#include <linux/irq.h>
+
+#include <asm/arch/pxa-regs.h>
+#include <asm/arch/hardware.h>
+
+#include <asm/hardware/gpio_keys.h>
+
+static irqreturn_t gpio_keys_isr(int irq, void *dev_id)
+{
+ int i;
+ struct platform_device *pdev = dev_id;
+ struct gpio_keys_platform_data *pdata = pdev->dev.platform_data;
+ struct input_dev *input = platform_get_drvdata(pdev);
+
+ for (i = 0; i < pdata->nbuttons; i++) {
+ int gpio = pdata->buttons[i].gpio;
+ if (irq == IRQ_GPIO(gpio)) {
+ int state = ((GPLR(gpio) & GPIO_bit(gpio)) ? 1 : 0) ^ (pdata->buttons[i].active_low);
+
+ input_report_key(input, pdata->buttons[i].keycode, state);
+ input_sync(input);
+ }
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int __devinit gpio_keys_probe(struct platform_device *pdev)
+{
+ struct gpio_keys_platform_data *pdata = pdev->dev.platform_data;
+ struct input_dev *input;
+ int i, error;
+
+ input = input_allocate_device();
+ if (!input)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, input);
+
+ input->evbit[0] = BIT(EV_KEY);
+
+ input->name = pdev->name;
+ input->phys = "gpio-keys/input0";
+ input->cdev.dev = &pdev->dev;
+ input->private = pdata;
+
+ input->id.bustype = BUS_HOST;
+ input->id.vendor = 0x0001;
+ input->id.product = 0x0001;
+ input->id.version = 0x0100;
+
+ for (i = 0; i < pdata->nbuttons; i++) {
+ int code = pdata->buttons[i].keycode;
+ int irq = IRQ_GPIO(pdata->buttons[i].gpio);
+
+ set_irq_type(irq, IRQ_TYPE_EDGE_BOTH);
+ error = request_irq(irq, gpio_keys_isr, SA_SAMPLE_RANDOM,
+ pdata->buttons[i].desc ? pdata->buttons[i].desc : "gpio_keys",
+ pdev);
+ if (error) {
+ printk(KERN_ERR "gpio-keys: unable to claim irq %d; error %d\n", irq, ret);
+ goto fail;
+ }
+ set_bit(code, input->keybit);
+ }
+
+ error = input_register_device(input);
+ if (error) {
+ printk(KERN_ERR "Unable to register gpio-keys input device\n");
+ goto fail;
+ }
+
+ return 0;
+
+ fail:
+ for (i = i - 1; i >= 0; i--)
+ free_irq(IRQ_GPIO(pdata->buttons[i].gpio), pdev);
+
+ input_free_device(input);
+
+ return error;
+}
+
+static int __devexit gpio_keys_remove(struct platform_device *pdev)
+{
+ struct gpio_keys_platform_data *pdata = pdev->dev.platform_data;
+ struct input_dev *input = platform_get_drvdata(pdev);
+ int i;
+
+ for (i = 0; i < pdata->nbuttons; i++) {
+ int irq = IRQ_GPIO(pdata->buttons[i].gpio);
+ free_irq(irq, pdev);
+ }
+
+ input_unregister_device(input);
+
+ return 0;
+}
+
+struct platform_driver gpio_keys_device_driver = {
+ .probe = gpio_keys_probe,
+ .remove = __devexit_p(gpio_keys_remove),
+ .driver = {
+ .name = "gpio-keys",
+ }
+};
+
+static int __init gpio_keys_init(void)
+{
+ return platform_driver_register(&gpio_keys_device_driver);
+}
+
+static void __exit gpio_keys_exit(void)
+{
+ platform_driver_unregister(&gpio_keys_device_driver);
+}
+
+module_init(gpio_keys_init);
+module_exit(gpio_keys_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Phil Blundell <pb@handhelds.org>");
+MODULE_DESCRIPTION("Keyboard driver for CPU GPIOs");
diff --git a/drivers/input/keyboard/hilkbd.c b/drivers/input/keyboard/hilkbd.c
index 35461eab2faf..255a6ec75a48 100644
--- a/drivers/input/keyboard/hilkbd.c
+++ b/drivers/input/keyboard/hilkbd.c
@@ -6,10 +6,10 @@
* Copyright (C) 1999-2006 Helge Deller <deller@gmx.de>
*
* Very basic HP Human Interface Loop (HIL) driver.
- * This driver handles the keyboard on HP300 (m68k) and on some
+ * This driver handles the keyboard on HP300 (m68k) and on some
* HP700 (parisc) series machines.
*
- *
+ *
* This file is subject to the terms and conditions of the GNU General Public
* License version 2. See the file COPYING in the main directory of this
* archive for more details.
@@ -64,9 +64,9 @@ MODULE_LICENSE("GPL v2");
#endif
-
+
/* HIL helper functions */
-
+
#define hil_busy() (hil_readb(HILBASE + HIL_CMD) & HIL_BUSY)
#define hil_data_available() (hil_readb(HILBASE + HIL_CMD) & HIL_DATA_RDY)
#define hil_status() (hil_readb(HILBASE + HIL_CMD))
@@ -75,7 +75,7 @@ MODULE_LICENSE("GPL v2");
#define hil_write_data(x) do { hil_writeb((x), HILBASE + HIL_DATA); } while (0)
/* HIL constants */
-
+
#define HIL_BUSY 0x02
#define HIL_DATA_RDY 0x01
@@ -86,10 +86,10 @@ MODULE_LICENSE("GPL v2");
#define HIL_INTON 0x5C /* Turn on interrupts. */
#define HIL_INTOFF 0x5D /* Turn off interrupts. */
-#define HIL_READKBDSADR 0xF9
-#define HIL_WRITEKBDSADR 0xE9
+#define HIL_READKBDSADR 0xF9
+#define HIL_WRITEKBDSADR 0xE9
-static unsigned int hphilkeyb_keycode[HIL_KEYCODES_SET1_TBLSIZE] =
+static unsigned int hphilkeyb_keycode[HIL_KEYCODES_SET1_TBLSIZE] =
{ HIL_KEYCODES_SET1 };
/* HIL structure */
@@ -97,11 +97,11 @@ static struct {
struct input_dev *dev;
unsigned int curdev;
-
+
unsigned char s;
unsigned char c;
int valid;
-
+
unsigned char data[16];
unsigned int ptr;
spinlock_t lock;
@@ -115,7 +115,7 @@ static void poll_finished(void)
int down;
int key;
unsigned char scode;
-
+
switch (hil_dev.data[0]) {
case 0x40:
down = (hil_dev.data[1] & 1) == 0;
@@ -127,6 +127,7 @@ static void poll_finished(void)
hil_dev.curdev = 0;
}
+
static inline void handle_status(unsigned char s, unsigned char c)
{
if (c & 0x8) {
@@ -143,6 +144,7 @@ static inline void handle_status(unsigned char s, unsigned char c)
}
}
+
static inline void handle_data(unsigned char s, unsigned char c)
{
if (hil_dev.curdev) {
@@ -152,13 +154,11 @@ static inline void handle_data(unsigned char s, unsigned char c)
}
-/*
- * Handle HIL interrupts.
- */
+/* handle HIL interrupts */
static irqreturn_t hil_interrupt(int irq, void *handle)
{
unsigned char s, c;
-
+
s = hil_status();
c = hil_read_data();
@@ -179,10 +179,8 @@ static irqreturn_t hil_interrupt(int irq, void *handle)
return IRQ_HANDLED;
}
-/*
- * Send a command to the HIL
- */
+/* send a command to the HIL */
static void hil_do(unsigned char cmd, unsigned char *data, unsigned int len)
{
unsigned long flags;
@@ -200,16 +198,14 @@ static void hil_do(unsigned char cmd, unsigned char *data, unsigned int len)
}
-/*
- * Initialise HIL.
- */
-
+/* initialise HIL */
static int __init
hil_keyb_init(void)
{
unsigned char c;
unsigned int i, kbid;
wait_queue_head_t hil_wait;
+ int err;
if (hil_dev.dev) {
return -ENODEV; /* already initialized */
@@ -219,15 +215,25 @@ hil_keyb_init(void)
if (!hil_dev.dev)
return -ENOMEM;
hil_dev.dev->private = &hil_dev;
-
+
#if defined(CONFIG_HP300)
- if (!hwreg_present((void *)(HILBASE + HIL_DATA)))
- return -ENODEV;
-
- request_region(HILBASE+HIL_DATA, 2, "hil");
+ if (!hwreg_present((void *)(HILBASE + HIL_DATA))) {
+ printk(KERN_ERR "HIL: hardware register was not found\n");
+ err = -ENODEV;
+ goto err1;
+ }
+ if (!request_region(HILBASE + HIL_DATA, 2, "hil")) {
+ printk(KERN_ERR "HIL: IOPORT region already used\n");
+ err = -EIO;
+ goto err1;
+ }
#endif
-
- request_irq(HIL_IRQ, hil_interrupt, 0, "hil", hil_dev.dev_id);
+
+ err = request_irq(HIL_IRQ, hil_interrupt, 0, "hil", hil_dev.dev_id);
+ if (err) {
+ printk(KERN_ERR "HIL: Can't get IRQ\n");
+ goto err2;
+ }
/* Turn on interrupts */
hil_do(HIL_INTON, NULL, 0);
@@ -239,47 +245,63 @@ hil_keyb_init(void)
init_waitqueue_head(&hil_wait);
wait_event_interruptible_timeout(hil_wait, hil_dev.valid, 3*HZ);
if (!hil_dev.valid) {
- printk(KERN_WARNING "HIL: timed out, assuming no keyboard present.\n");
+ printk(KERN_WARNING "HIL: timed out, assuming no keyboard present\n");
}
- c = hil_dev.c;
+ c = hil_dev.c;
hil_dev.valid = 0;
if (c == 0) {
kbid = -1;
- printk(KERN_WARNING "HIL: no keyboard present.\n");
+ printk(KERN_WARNING "HIL: no keyboard present\n");
} else {
kbid = ffz(~c);
- /* printk(KERN_INFO "HIL: keyboard found at id %d\n", kbid); */
+ printk(KERN_INFO "HIL: keyboard found at id %d\n", kbid);
}
/* set it to raw mode */
c = 0;
hil_do(HIL_WRITEKBDSADR, &c, 1);
-
+
for (i = 0; i < HIL_KEYCODES_SET1_TBLSIZE; i++)
if (hphilkeyb_keycode[i] != KEY_RESERVED)
set_bit(hphilkeyb_keycode[i], hil_dev.dev->keybit);
- hil_dev.dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
- hil_dev.dev->ledbit[0] = BIT(LED_NUML) | BIT(LED_CAPSL) | BIT(LED_SCROLLL);
- hil_dev.dev->keycodemax = HIL_KEYCODES_SET1_TBLSIZE;
- hil_dev.dev->keycodesize = sizeof(hphilkeyb_keycode[0]);
- hil_dev.dev->keycode = hphilkeyb_keycode;
- hil_dev.dev->name = "HIL keyboard";
- hil_dev.dev->phys = "hpkbd/input0";
+ hil_dev.dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
+ hil_dev.dev->ledbit[0] = BIT(LED_NUML) | BIT(LED_CAPSL) | BIT(LED_SCROLLL);
+ hil_dev.dev->keycodemax = HIL_KEYCODES_SET1_TBLSIZE;
+ hil_dev.dev->keycodesize= sizeof(hphilkeyb_keycode[0]);
+ hil_dev.dev->keycode = hphilkeyb_keycode;
+ hil_dev.dev->name = "HIL keyboard";
+ hil_dev.dev->phys = "hpkbd/input0";
hil_dev.dev->id.bustype = BUS_HIL;
hil_dev.dev->id.vendor = PCI_VENDOR_ID_HP;
hil_dev.dev->id.product = 0x0001;
hil_dev.dev->id.version = 0x0010;
- input_register_device(hil_dev.dev);
+ err = input_register_device(hil_dev.dev);
+ if (err) {
+ printk(KERN_ERR "HIL: Can't register device\n");
+ goto err3;
+ }
printk(KERN_INFO "input: %s, ID %d at 0x%08lx (irq %d) found and attached\n",
- hil_dev.dev->name, kbid, HILBASE, HIL_IRQ);
+ hil_dev.dev->name, kbid, HILBASE, HIL_IRQ);
return 0;
+
+err3:
+ hil_do(HIL_INTOFF, NULL, 0);
+ disable_irq(HIL_IRQ);
+ free_irq(HIL_IRQ, hil_dev.dev_id);
+err2:
+ release_region(HILBASE + HIL_DATA, 2);
+err1:
+ input_free_device(hil_dev.dev);
+ hil_dev.dev = NULL;
+ return err;
}
+
#if defined(CONFIG_PARISC)
static int __init
hil_init_chip(struct parisc_device *dev)
@@ -292,7 +314,7 @@ hil_init_chip(struct parisc_device *dev)
hil_base = dev->hpa.start;
hil_irq = dev->irq;
hil_dev.dev_id = dev;
-
+
printk(KERN_INFO "Found HIL bus at 0x%08lx, IRQ %d\n", hil_base, hil_irq);
return hil_keyb_init();
@@ -313,9 +335,6 @@ static struct parisc_driver hil_driver = {
#endif /* CONFIG_PARISC */
-
-
-
static int __init hil_init(void)
{
#if defined(CONFIG_PARISC)
@@ -349,4 +368,3 @@ static void __exit hil_exit(void)
module_init(hil_init);
module_exit(hil_exit);
-
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-30 12:31:52 +0100