This patch makes the HP jornada 6xx touchscreen working again. The driver was
broken since
the removal of tsdev (2.6.24), so we make it work with tslib module input_raw.
We also upgrade the touchscreen driver into an platform driver to make it more
inline
with the rest.
Signed-off-by : Kristoffer Ericson <[EMAIL PROTECTED]>
diff --git a/drivers/input/touchscreen/hp680_ts_input.c
b/drivers/input/touchscreen/hp680_ts_input.c
index c38d4e0..16a643b 100644
--- a/drivers/input/touchscreen/hp680_ts_input.c
+++ b/drivers/input/touchscreen/hp680_ts_input.c
@@ -1,7 +1,16 @@
+/*
+ * Platform driver for the HP Jornada 620/660/680/690 Touchscreen.
+ *
+ * Copyright 2008 Kristoffer Ericson <[EMAIL PROTECTED]>
+ * Copyright ...-2007 Andriy Skulysh <[EMAIL PROTECTED]>
+ */
#include <linux/input.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/workqueue.h>
+
#include <asm/io.h>
#include <asm/delay.h>
#include <asm/adc.h>
@@ -9,24 +18,18 @@
#define MODNAME "hp680_ts_input"
-#define HP680_TS_ABS_X_MIN 40
-#define HP680_TS_ABS_X_MAX 950
-#define HP680_TS_ABS_Y_MIN 80
-#define HP680_TS_ABS_Y_MAX 910
-
-#define PHDR 0xa400012e
-#define SCPDR 0xa4000136
-
-static void do_softint(struct work_struct *work);
+#define PHDR 0xa400012e /* PORT H DATA REGISTER */
+#define SCPDR 0xa4000136 /* PORT SC DATA REGISTER */
-static struct input_dev *hp680_ts_dev;
+struct input_dev *dev;
+static void do_softint(struct delayed_work *work);
static DECLARE_DELAYED_WORK(work, do_softint);
-static void do_softint(struct work_struct *work)
+static void do_softint(struct delayed_work *work)
{
- int absx = 0, absy = 0;
u8 scpdr;
int touched = 0;
+ int x, y;
if (ctrl_inb(PHDR) & PHDR_TS_PEN_DOWN) {
scpdr = ctrl_inb(SCPDR);
@@ -35,7 +38,7 @@ static void do_softint(struct work_struct *work)
ctrl_outb(scpdr, SCPDR);
udelay(30);
- absy = adc_single(ADC_CHANNEL_TS_Y);
+ y = adc_single(ADC_CHANNEL_TS_Y);
scpdr = ctrl_inb(SCPDR);
scpdr |= SCPDR_TS_SCAN_Y;
@@ -43,7 +46,7 @@ static void do_softint(struct work_struct *work)
ctrl_outb(scpdr, SCPDR);
udelay(30);
- absx = adc_single(ADC_CHANNEL_TS_X);
+ x = adc_single(ADC_CHANNEL_TS_X);
scpdr = ctrl_inb(SCPDR);
scpdr |= SCPDR_TS_SCAN_X;
@@ -54,76 +57,101 @@ static void do_softint(struct work_struct *work)
}
if (touched) {
- input_report_key(hp680_ts_dev, BTN_TOUCH, 1);
- input_report_abs(hp680_ts_dev, ABS_X, absx);
- input_report_abs(hp680_ts_dev, ABS_Y, absy);
+ input_report_abs(dev, ABS_X, x);
+ input_report_abs(dev, ABS_Y, y);
+ input_report_abs(dev, ABS_PRESSURE, 1);
+ input_report_key(dev, BTN_TOUCH, 1);
+ input_sync(dev);
} else {
- input_report_key(hp680_ts_dev, BTN_TOUCH, 0);
+ input_report_abs(dev, ABS_PRESSURE, 0);
+ input_report_key(dev, BTN_TOUCH, 0);
+ input_sync(dev);
}
-
- input_sync(hp680_ts_dev);
enable_irq(HP680_TS_IRQ);
}
-static irqreturn_t hp680_ts_interrupt(int irq, void *dev)
+static irqreturn_t hp680_ts_interrupt(int irq, void *pdev)
{
disable_irq_nosync(irq);
schedule_delayed_work(&work, HZ / 20);
-
return IRQ_HANDLED;
}
-static int __init hp680_ts_init(void)
+static int __devinit jornada680_ts_probe(struct platform_device *pdev)
{
- int err;
+ int error;
- hp680_ts_dev = input_allocate_device();
- if (!hp680_ts_dev)
- return -ENOMEM;
+ dev = input_allocate_device();
- hp680_ts_dev->evbit[0] = BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY);
- hp680_ts_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
-
- input_set_abs_params(hp680_ts_dev, ABS_X,
- HP680_TS_ABS_X_MIN, HP680_TS_ABS_X_MAX, 0, 0);
- input_set_abs_params(hp680_ts_dev, ABS_Y,
- HP680_TS_ABS_Y_MIN, HP680_TS_ABS_Y_MAX, 0, 0);
+ if (!dev) {
+ printk(KERN_INFO "ts: failed to allocate device\n");
+ error = -ENODEV;
+ return error;
+ }
- hp680_ts_dev->name = "HP Jornada touchscreen";
- hp680_ts_dev->phys = "hp680_ts/input0";
+ dev->name = "HP Jornada 6xx Touchscreen";
+ dev->phys = "jornadats/input0";
+ dev->id.bustype = BUS_HOST;
+ dev->dev.parent = &pdev->dev;
+ dev->evbit[0] = BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY);
+ dev->absbit[0] = BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) |
BIT_MASK(ABS_PRESSURE);
+ dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
- if (request_irq(HP680_TS_IRQ, hp680_ts_interrupt,
- IRQF_DISABLED, MODNAME, 0) < 0) {
- printk(KERN_ERR "hp680_touchscreen.c: Can't allocate irq %d\n",
- HP680_TS_IRQ);
- err = -EBUSY;
- goto fail1;
- }
+ input_set_abs_params(dev, ABS_X, 40, 950, 0, 0);
+ input_set_abs_params(dev, ABS_Y, 80, 910, 0, 0);
- err = input_register_device(hp680_ts_dev);
- if (err)
+ printk(KERN_INFO "ts: registering device\n");
+ error = input_register_device(dev);
+ if (error)
goto fail2;
+ error = request_irq(HP680_TS_IRQ, hp680_ts_interrupt,
+ IRQF_DISABLED, "HP6xx Touchscreen Driver", NULL);
+
+ if (error) {
+ printk(KERN_INFO "ts: Unable to aquire irq %d\n", HP680_TS_IRQ);
+ error = -ENODEV;
+ goto fail3;
+ }
+
return 0;
- fail2: free_irq(HP680_TS_IRQ, NULL);
- cancel_delayed_work(&work);
- flush_scheduled_work();
- fail1: input_free_device(hp680_ts_dev);
- return err;
+fail3:
+ input_unregister_device(dev);
+fail2:
+ input_free_device(dev);
+ return error;
}
-static void __exit hp680_ts_exit(void)
+static int __devexit jornada680_ts_remove(struct platform_device *pdev)
{
- free_irq(HP680_TS_IRQ, NULL);
cancel_delayed_work(&work);
flush_scheduled_work();
- input_unregister_device(hp680_ts_dev);
+ free_irq(HP680_TS_IRQ, pdev);
+ input_unregister_device(dev);
+ return 0;
+}
+
+static struct platform_driver jornada680_ts_driver = {
+ .probe = jornada680_ts_probe,
+ .remove = __devexit(jornada680_ts_remove),
+ .driver = {
+ .name = "jornada_ts",
+ },
+};
+
+static int __init hp680_ts_init(void)
+{
+ return platform_driver_register(&jornada680_ts_driver);
}
+static void __exit hp680_ts_exit(void)
+{
+ platform_driver_unregister(&jornada680_ts_driver);
+}
module_init(hp680_ts_init);
module_exit(hp680_ts_exit);
-MODULE_AUTHOR("Andriy Skulysh, [EMAIL PROTECTED]");
-MODULE_DESCRIPTION("HP Jornada 680 touchscreen driver");
+MODULE_AUTHOR("Andriy Skulysh <[EMAIL PROTECTED]>, Kristoffer Ericson <[EMAIL
PROTECTED]>");
+MODULE_DESCRIPTION("HP Jornada 6xx touchscreen driver");
MODULE_LICENSE("GPL");
--
Kristoffer Ericson <[EMAIL PROTECTED]>
