Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/input/touchscreen/hp680_ts_input.c b/drivers/input/touchscreen/hp680_ts_input.c
new file mode 100644
index 0000000..7e14044
--- /dev/null
+++ b/drivers/input/touchscreen/hp680_ts_input.c
@@ -0,0 +1,135 @@
+#include <linux/input.h>
+#include <linux/module.h>
+#include <linux/init.h>
+
+#include <linux/interrupt.h>
+#include <asm/io.h>
+#include <asm/delay.h>
+#include <asm/adc.h>
+#include <asm/hp6xx/hp6xx.h>
+
+#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 SCPCR 0xa4000116
+#define PHDR 0xa400012e
+#define SCPDR 0xa4000136
+
+static void do_softint(void *data);
+
+static struct input_dev hp680_ts_dev;
+static DECLARE_WORK(work, do_softint, 0);
+static char *hp680_ts_name = "HP Jornada touchscreen";
+static char *hp680_ts_phys = "input0";
+
+static void do_softint(void *data)
+{
+ int absx = 0, absy = 0;
+ u8 scpdr;
+ int touched = 0;
+
+ if (ctrl_inb(PHDR) & PHDR_TS_PEN_DOWN) {
+ scpdr = ctrl_inb(SCPDR);
+ scpdr |= SCPDR_TS_SCAN_ENABLE;
+ scpdr &= ~SCPDR_TS_SCAN_Y;
+ ctrl_outb(scpdr, SCPDR);
+ udelay(30);
+
+ absy = adc_single(ADC_CHANNEL_TS_Y);
+
+ scpdr = ctrl_inb(SCPDR);
+ scpdr |= SCPDR_TS_SCAN_Y;
+ scpdr &= ~SCPDR_TS_SCAN_X;
+ ctrl_outb(scpdr, SCPDR);
+ udelay(30);
+
+ absx = adc_single(ADC_CHANNEL_TS_X);
+
+ scpdr = ctrl_inb(SCPDR);
+ scpdr |= SCPDR_TS_SCAN_X;
+ scpdr &= ~SCPDR_TS_SCAN_ENABLE;
+ ctrl_outb(scpdr, SCPDR);
+ udelay(100);
+ touched = ctrl_inb(PHDR) & PHDR_TS_PEN_DOWN;
+ }
+
+ 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);
+ } else {
+ input_report_key(&hp680_ts_dev, BTN_TOUCH, 0);
+ }
+
+ input_sync(&hp680_ts_dev);
+ enable_irq(HP680_TS_IRQ);
+}
+
+static irqreturn_t hp680_ts_interrupt(int irq, void *dev, struct pt_regs *regs)
+{
+ disable_irq_nosync(irq);
+ schedule_delayed_work(&work, HZ / 20);
+
+ return IRQ_HANDLED;
+}
+
+static int __init hp680_ts_init(void)
+{
+ u8 scpdr;
+ u16 scpcr;
+
+ scpdr = ctrl_inb(SCPDR);
+ scpdr |= SCPDR_TS_SCAN_X | SCPDR_TS_SCAN_Y;
+ scpdr &= ~SCPDR_TS_SCAN_ENABLE;
+ ctrl_outb(scpdr, SCPDR);
+
+ scpcr = ctrl_inw(SCPCR);
+ scpcr &= ~SCPCR_TS_MASK;
+ scpcr |= SCPCR_TS_ENABLE;
+ ctrl_outw(scpcr, SCPCR);
+
+ memset(&hp680_ts_dev, 0, sizeof(hp680_ts_dev));
+ init_input_dev(&hp680_ts_dev);
+
+ hp680_ts_dev.evbit[0] = BIT(EV_ABS) | BIT(EV_KEY);
+ hp680_ts_dev.absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
+ hp680_ts_dev.keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
+
+ hp680_ts_dev.absmin[ABS_X] = HP680_TS_ABS_X_MIN;
+ hp680_ts_dev.absmin[ABS_Y] = HP680_TS_ABS_Y_MIN;
+ hp680_ts_dev.absmax[ABS_X] = HP680_TS_ABS_X_MAX;
+ hp680_ts_dev.absmax[ABS_Y] = HP680_TS_ABS_Y_MAX;
+
+ hp680_ts_dev.name = hp680_ts_name;
+ hp680_ts_dev.phys = hp680_ts_phys;
+ input_register_device(&hp680_ts_dev);
+
+ if (request_irq
+ (HP680_TS_IRQ, hp680_ts_interrupt, SA_INTERRUPT, MODNAME, 0) < 0) {
+ printk(KERN_ERR "hp680_touchscreen.c : Can't allocate irq %d\n",
+ HP680_TS_IRQ);
+ input_unregister_device(&hp680_ts_dev);
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+static void __exit hp680_ts_exit(void)
+{
+ free_irq(HP680_TS_IRQ, 0);
+ cancel_delayed_work(&work);
+ flush_scheduled_work();
+ input_unregister_device(&hp680_ts_dev);
+}
+
+module_init(hp680_ts_init);
+module_exit(hp680_ts_exit);
+
+MODULE_AUTHOR("Andriy Skulysh, askulysh@image.kiev.ua");
+MODULE_DESCRIPTION("HP Jornada 680 touchscreen driver");
+MODULE_LICENSE("GPL");