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path: root/drivers/input/keyboard/bf54x-keys.c
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Diffstat (limited to 'drivers/input/keyboard/bf54x-keys.c')
-rw-r--r--drivers/input/keyboard/bf54x-keys.c110
1 files changed, 65 insertions, 45 deletions
diff --git a/drivers/input/keyboard/bf54x-keys.c b/drivers/input/keyboard/bf54x-keys.c
index 05e3494cf8b..e6d46c5994d 100644
--- a/drivers/input/keyboard/bf54x-keys.c
+++ b/drivers/input/keyboard/bf54x-keys.c
@@ -8,7 +8,7 @@
*
*
* Modified:
- * Copyright 2007 Analog Devices Inc.
+ * Copyright 2007-2008 Analog Devices Inc.
*
* Bugs: Enter bugs at http://blackfin.uclinux.org/
*
@@ -29,12 +29,11 @@
*/
#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/slab.h>
#include <linux/sched.h>
#include <linux/pm.h>
#include <linux/sysctl.h>
@@ -44,7 +43,7 @@
#include <linux/input.h>
#include <asm/portmux.h>
-#include <asm/mach/bf54x_keys.h>
+#include <mach/bf54x_keys.h>
#define DRV_NAME "bf54x-keys"
#define TIME_SCALE 100 /* 100 ns */
@@ -82,6 +81,9 @@ struct bf54x_kpad {
unsigned short *keycode;
struct timer_list timer;
unsigned int keyup_test_jiffies;
+ unsigned short kpad_msel;
+ unsigned short kpad_prescale;
+ unsigned short kpad_ctl;
};
static inline int bfin_kpad_find_key(struct bf54x_kpad *bf54x_kpad,
@@ -160,7 +162,7 @@ static irqreturn_t bfin_kpad_isr(int irq, void *dev_id)
input_sync(input);
if (bfin_kpad_get_keypressed(bf54x_kpad)) {
- disable_irq(bf54x_kpad->irq);
+ disable_irq_nosync(bf54x_kpad->irq);
bf54x_kpad->lastkey = key;
mod_timer(&bf54x_kpad->timer,
jiffies + bf54x_kpad->keyup_test_jiffies);
@@ -174,22 +176,21 @@ static irqreturn_t bfin_kpad_isr(int irq, void *dev_id)
return IRQ_HANDLED;
}
-static int __devinit bfin_kpad_probe(struct platform_device *pdev)
+static int bfin_kpad_probe(struct platform_device *pdev)
{
struct bf54x_kpad *bf54x_kpad;
- struct bfin_kpad_platform_data *pdata = pdev->dev.platform_data;
+ struct bfin_kpad_platform_data *pdata = dev_get_platdata(&pdev->dev);
struct input_dev *input;
int i, error;
if (!pdata->rows || !pdata->cols || !pdata->keymap) {
- printk(KERN_ERR DRV_NAME
- ": No rows, cols or keymap from pdata\n");
+ dev_err(&pdev->dev, "no rows, cols or keymap from pdata\n");
return -EINVAL;
}
if (!pdata->keymapsize ||
pdata->keymapsize > (pdata->rows * pdata->cols)) {
- printk(KERN_ERR DRV_NAME ": Invalid keymapsize\n");
+ dev_err(&pdev->dev, "invalid keymapsize\n");
return -EINVAL;
}
@@ -207,10 +208,10 @@ static int __devinit bfin_kpad_probe(struct platform_device *pdev)
goto out;
}
- if (!pdata->debounce_time || !pdata->debounce_time > MAX_MULT ||
- !pdata->coldrive_time || !pdata->coldrive_time > MAX_MULT) {
- printk(KERN_ERR DRV_NAME
- ": Invalid Debounce/Columdrive Time from pdata\n");
+ if (!pdata->debounce_time || pdata->debounce_time > MAX_MULT ||
+ !pdata->coldrive_time || pdata->coldrive_time > MAX_MULT) {
+ dev_warn(&pdev->dev,
+ "invalid platform debounce/columndrive time\n");
bfin_write_KPAD_MSEL(0xFF0); /* Default MSEL */
} else {
bfin_write_KPAD_MSEL(
@@ -229,16 +230,14 @@ static int __devinit bfin_kpad_probe(struct platform_device *pdev)
if (peripheral_request_list((u16 *)&per_rows[MAX_RC - pdata->rows],
DRV_NAME)) {
- printk(KERN_ERR DRV_NAME
- ": Requesting Peripherals failed\n");
+ dev_err(&pdev->dev, "requesting peripherals failed\n");
error = -EFAULT;
goto out0;
}
if (peripheral_request_list((u16 *)&per_cols[MAX_RC - pdata->cols],
DRV_NAME)) {
- printk(KERN_ERR DRV_NAME
- ": Requesting Peripherals failed\n");
+ dev_err(&pdev->dev, "requesting peripherals failed\n");
error = -EFAULT;
goto out1;
}
@@ -250,11 +249,10 @@ static int __devinit bfin_kpad_probe(struct platform_device *pdev)
}
error = request_irq(bf54x_kpad->irq, bfin_kpad_isr,
- IRQF_SAMPLE_RANDOM, DRV_NAME, pdev);
+ 0, DRV_NAME, pdev);
if (error) {
- printk(KERN_ERR DRV_NAME
- ": unable to claim irq %d; error %d\n",
- bf54x_kpad->irq, error);
+ dev_err(&pdev->dev, "unable to claim irq %d\n",
+ bf54x_kpad->irq);
goto out2;
}
@@ -290,13 +288,13 @@ static int __devinit bfin_kpad_probe(struct platform_device *pdev)
__set_bit(EV_REP, input->evbit);
for (i = 0; i < input->keycodemax; i++)
- __set_bit(bf54x_kpad->keycode[i] & KEY_MAX, input->keybit);
+ if (bf54x_kpad->keycode[i] <= KEY_MAX)
+ __set_bit(bf54x_kpad->keycode[i], input->keybit);
__clear_bit(KEY_RESERVED, input->keybit);
error = input_register_device(input);
if (error) {
- printk(KERN_ERR DRV_NAME
- ": Unable to register input device (%d)\n", error);
+ dev_err(&pdev->dev, "unable to register input device\n");
goto out4;
}
@@ -312,8 +310,7 @@ static int __devinit bfin_kpad_probe(struct platform_device *pdev)
bfin_write_KPAD_CTL(bfin_read_KPAD_CTL() | KPAD_EN);
- printk(KERN_ERR DRV_NAME
- ": Blackfin BF54x Keypad registered IRQ %d\n", bf54x_kpad->irq);
+ device_init_wakeup(&pdev->dev, 1);
return 0;
@@ -329,14 +326,13 @@ out0:
kfree(bf54x_kpad->keycode);
out:
kfree(bf54x_kpad);
- platform_set_drvdata(pdev, NULL);
return error;
}
-static int __devexit bfin_kpad_remove(struct platform_device *pdev)
+static int bfin_kpad_remove(struct platform_device *pdev)
{
- struct bfin_kpad_platform_data *pdata = pdev->dev.platform_data;
+ struct bfin_kpad_platform_data *pdata = dev_get_platdata(&pdev->dev);
struct bf54x_kpad *bf54x_kpad = platform_get_drvdata(pdev);
del_timer_sync(&bf54x_kpad->timer);
@@ -349,32 +345,56 @@ static int __devexit bfin_kpad_remove(struct platform_device *pdev)
kfree(bf54x_kpad->keycode);
kfree(bf54x_kpad);
- platform_set_drvdata(pdev, NULL);
return 0;
}
-struct platform_driver bfin_kpad_device_driver = {
- .probe = bfin_kpad_probe,
- .remove = __devexit_p(bfin_kpad_remove),
- .driver = {
- .name = DRV_NAME,
- }
-};
-
-static int __init bfin_kpad_init(void)
+#ifdef CONFIG_PM
+static int bfin_kpad_suspend(struct platform_device *pdev, pm_message_t state)
{
- return platform_driver_register(&bfin_kpad_device_driver);
+ struct bf54x_kpad *bf54x_kpad = platform_get_drvdata(pdev);
+
+ bf54x_kpad->kpad_msel = bfin_read_KPAD_MSEL();
+ bf54x_kpad->kpad_prescale = bfin_read_KPAD_PRESCALE();
+ bf54x_kpad->kpad_ctl = bfin_read_KPAD_CTL();
+
+ if (device_may_wakeup(&pdev->dev))
+ enable_irq_wake(bf54x_kpad->irq);
+
+ return 0;
}
-static void __exit bfin_kpad_exit(void)
+static int bfin_kpad_resume(struct platform_device *pdev)
{
- platform_driver_unregister(&bfin_kpad_device_driver);
+ struct bf54x_kpad *bf54x_kpad = platform_get_drvdata(pdev);
+
+ bfin_write_KPAD_MSEL(bf54x_kpad->kpad_msel);
+ bfin_write_KPAD_PRESCALE(bf54x_kpad->kpad_prescale);
+ bfin_write_KPAD_CTL(bf54x_kpad->kpad_ctl);
+
+ if (device_may_wakeup(&pdev->dev))
+ disable_irq_wake(bf54x_kpad->irq);
+
+ return 0;
}
+#else
+# define bfin_kpad_suspend NULL
+# define bfin_kpad_resume NULL
+#endif
-module_init(bfin_kpad_init);
-module_exit(bfin_kpad_exit);
+static struct platform_driver bfin_kpad_device_driver = {
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ },
+ .probe = bfin_kpad_probe,
+ .remove = bfin_kpad_remove,
+ .suspend = bfin_kpad_suspend,
+ .resume = bfin_kpad_resume,
+};
+module_platform_driver(bfin_kpad_device_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
MODULE_DESCRIPTION("Keypad driver for BF54x Processors");
+MODULE_ALIAS("platform:bf54x-keys");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-20 18:54:46 +0000