ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/drivers/input/touchscreen/hp680_ts_input.c b/marvell/linux/drivers/input/touchscreen/hp680_ts_input.c
new file mode 100644
index 0000000..818f2e4
--- /dev/null
+++ b/marvell/linux/drivers/input/touchscreen/hp680_ts_input.c
@@ -0,0 +1,128 @@
+// SPDX-License-Identifier: GPL-2.0-only
+#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 <mach/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 PHDR 0xa400012e
+#define SCPDR 0xa4000136
+
+static void do_softint(struct work_struct *work);
+
+static struct input_dev *hp680_ts_dev;
+static DECLARE_DELAYED_WORK(work, do_softint);
+
+static void do_softint(struct work_struct *work)
+{
+ int absx = 0, absy = 0;
+ u8 scpdr;
+ int touched = 0;
+
+ if (__raw_readb(PHDR) & PHDR_TS_PEN_DOWN) {
+ scpdr = __raw_readb(SCPDR);
+ scpdr |= SCPDR_TS_SCAN_ENABLE;
+ scpdr &= ~SCPDR_TS_SCAN_Y;
+ __raw_writeb(scpdr, SCPDR);
+ udelay(30);
+
+ absy = adc_single(ADC_CHANNEL_TS_Y);
+
+ scpdr = __raw_readb(SCPDR);
+ scpdr |= SCPDR_TS_SCAN_Y;
+ scpdr &= ~SCPDR_TS_SCAN_X;
+ __raw_writeb(scpdr, SCPDR);
+ udelay(30);
+
+ absx = adc_single(ADC_CHANNEL_TS_X);
+
+ scpdr = __raw_readb(SCPDR);
+ scpdr |= SCPDR_TS_SCAN_X;
+ scpdr &= ~SCPDR_TS_SCAN_ENABLE;
+ __raw_writeb(scpdr, SCPDR);
+ udelay(100);
+ touched = __raw_readb(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)
+{
+ disable_irq_nosync(irq);
+ schedule_delayed_work(&work, HZ / 20);
+
+ return IRQ_HANDLED;
+}
+
+static int __init hp680_ts_init(void)
+{
+ int err;
+
+ hp680_ts_dev = input_allocate_device();
+ if (!hp680_ts_dev)
+ return -ENOMEM;
+
+ 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);
+
+ hp680_ts_dev->name = "HP Jornada touchscreen";
+ hp680_ts_dev->phys = "hp680_ts/input0";
+
+ if (request_irq(HP680_TS_IRQ, hp680_ts_interrupt,
+ 0, MODNAME, NULL) < 0) {
+ printk(KERN_ERR "hp680_touchscreen.c: Can't allocate irq %d\n",
+ HP680_TS_IRQ);
+ err = -EBUSY;
+ goto fail1;
+ }
+
+ err = input_register_device(hp680_ts_dev);
+ if (err)
+ goto fail2;
+
+ return 0;
+
+ fail2: free_irq(HP680_TS_IRQ, NULL);
+ cancel_delayed_work_sync(&work);
+ fail1: input_free_device(hp680_ts_dev);
+ return err;
+}
+
+static void __exit hp680_ts_exit(void)
+{
+ free_irq(HP680_TS_IRQ, NULL);
+ cancel_delayed_work_sync(&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");