From: Felipe Balbi <felipe.balbi@xxxxxxxxx>
Signed-off-by: Felipe Balbi <felipe.balbi@xxxxxxxxx>
---
drivers/input/touchscreen/Makefile | 1 +
drivers/input/touchscreen/omap/Makefile | 10 +
drivers/input/touchscreen/omap/omap_ts.c | 267 ++++++++++++++++++++++++++++++
drivers/input/touchscreen/omap/omap_ts.h | 57 +++++++
drivers/input/touchscreen/omap/ts_hx.c | 184 ++++++++++++++++++++
5 files changed, 519 insertions(+), 0 deletions(-)
create mode 100644 drivers/input/touchscreen/omap/Makefile
create mode 100644 drivers/input/touchscreen/omap/omap_ts.c
create mode 100644 drivers/input/touchscreen/omap/omap_ts.h
create mode 100644 drivers/input/touchscreen/omap/ts_hx.c
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index 0342389..e0bc8fb 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -27,6 +27,7 @@ obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT) += touchright.o
obj-$(CONFIG_TOUCHSCREEN_TOUCHWIN) += touchwin.o
obj-$(CONFIG_TOUCHSCREEN_UCB1400) += ucb1400_ts.o
obj-$(CONFIG_TOUCHSCREEN_TSC2005) += tsc2005.o
+obj-$(CONFIG_TOUCHSCREEN_OMAP) += omap/
obj-$(CONFIG_TOUCHSCREEN_WM97XX) += wm97xx-ts.o
wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9705) += wm9705.o
wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9712) += wm9712.o
diff --git a/drivers/input/touchscreen/omap/Makefile b/drivers/input/touchscreen/omap/Makefile
new file mode 100644
index 0000000..af6344e
--- /dev/null
+++ b/drivers/input/touchscreen/omap/Makefile
@@ -0,0 +1,10 @@
+#
+# Makefile for the OMAP touchscreen input driver
+#
+
+obj-$(CONFIG_TOUCHSCREEN_OMAP) += omapts.o
+
+objs-$(CONFIG_ARCH_OMAP16XX)$(CONFIG_MACH_OMAP_H2) += ts_hx.o
+objs-$(CONFIG_ARCH_OMAP16XX)$(CONFIG_MACH_OMAP_H3) += ts_hx.o
+
+omapts-objs := omap_ts.o $(objs-yy)
diff --git a/drivers/input/touchscreen/omap/omap_ts.c b/drivers/input/touchscreen/omap/omap_ts.c
new file mode 100644
index 0000000..ee85755
--- /dev/null
+++ b/drivers/input/touchscreen/omap/omap_ts.c
@@ -0,0 +1,267 @@
+/*
+ * input/touchscreen/omap/omap_ts.c
+ *
+ * touchscreen input device driver for various TI OMAP boards
+ * Copyright (c) 2002 MontaVista Software Inc.
+ * Copyright (c) 2004 Texas Instruments, Inc.
+ * Cleanup and modularization 2004 by Dirk Behme <dirk.behme@xxxxxxxxxxxx>
+ *
+ * Assembled using driver code copyright the companies above.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * History:
+ * 12/12/2004 Srinath Modified and intergrated code for H2 and H3
+ *
+ */
+
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/input.h>
+#include <linux/init.h>
+#include <linux/wait.h>
+#include <linux/interrupt.h>
+#include <linux/suspend.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach-types.h>
+
+//#define DEBUG
+
+#include "omap_ts.h"
+
+#define OMAP_TS_NAME "omap_ts"
+
+static struct ts_device *__initdata ts_devs[] = {
+#if defined(CONFIG_MACH_OMAP_H2) || defined(CONFIG_MACH_OMAP_H3)
+ &hx_ts,
+#endif
+};
+
+static struct omap_ts_t ts_omap;
+
+static int omap_ts_read(void)
+{
+ u16 data[4] = { 0, 0, 0, 0 };
+
+ ts_omap.dev->read(data);
+
+ input_report_abs(ts_omap.inputdevice, ABS_X, data[0]);
+ input_report_abs(ts_omap.inputdevice, ABS_Y, data[1]);
+ input_report_abs(ts_omap.inputdevice, ABS_PRESSURE, data[2]);
+ input_sync(ts_omap.inputdevice);
+
+ DEBUG_TS("omap_ts_read: read x=%d,y=%d,p=%d\n", data[0], data[1],
+ data[2]);
+
+ return 0;
+}
+
+static void omap_ts_timer(unsigned long data)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&ts_omap.lock, flags);
+
+ if (!ts_omap.dev->penup()) {
+ if (!ts_omap.touched) {
+ DEBUG_TS("omap_ts_timer: pen down\n");
+ input_report_key(ts_omap.inputdevice, BTN_TOUCH, 1);
+ }
+ ts_omap.touched = 1;
+ omap_ts_read();
+ ts_omap.ts_timer.expires = jiffies + HZ / 100;
+ add_timer(&(ts_omap.ts_timer));
+ } else {
+ if (ts_omap.touched) {
+ DEBUG_TS("omap_ts_timer: pen up\n");
+ ts_omap.touched = 0;
+ input_report_abs(ts_omap.inputdevice, ABS_X, 0);
+ input_report_abs(ts_omap.inputdevice, ABS_Y, 0);
+ input_report_abs(ts_omap.inputdevice, ABS_PRESSURE,
+ 0);
+ input_sync(ts_omap.inputdevice);
+ input_report_key(ts_omap.inputdevice, BTN_TOUCH, 0);
+ }
+ if (!ts_omap.irq_enabled) {
+ ts_omap.irq_enabled = 1;
+ enable_irq(ts_omap.irq);
+ }
+ }
+
+ spin_unlock_irqrestore(&ts_omap.lock, flags);
+}
+
+static irqreturn_t omap_ts_handler(int irq, void *dev_id)
+{
+ spin_lock(&ts_omap.lock);
+
+ if (ts_omap.irq_enabled) {
+ ts_omap.irq_enabled = 0;
+ disable_irq(irq);
+ }
+ // restart acquire
+ mod_timer(&ts_omap.ts_timer, jiffies + HZ / 100);
+
+ spin_unlock(&ts_omap.lock);
+
+ return IRQ_HANDLED;
+}
+
+static int __init omap_ts_probe(struct platform_device *pdev)
+{
+ int i;
+ int status = -ENODEV;
+
+ memset(&ts_omap, 0, sizeof(ts_omap));
+
+ ts_omap.inputdevice = input_allocate_device();
+ if (!ts_omap.inputdevice) {
+ return -ENOMEM;
+ }
+
+ spin_lock_init(&ts_omap.lock);
+
+ for (i = 0; i < ARRAY_SIZE(ts_devs); i++) {
+ if (!ts_devs[i] || !ts_devs[i]->probe)
+ continue;
+ status = ts_devs[i]->probe(&ts_omap);
+ if (status == 0) {
+ ts_omap.dev = ts_devs[i];
+ break;
+ }
+ }
+
+ if (status != 0) {
+ input_free_device(ts_omap.inputdevice);
+ return status;
+ }
+
+ // Init acquisition timer function
+ init_timer(&ts_omap.ts_timer);
+ ts_omap.ts_timer.function = omap_ts_timer;
+
+ /* request irq */
+ if (ts_omap.irq != -1) {
+ if (request_irq(ts_omap.irq, omap_ts_handler,
+ IRQF_SAMPLE_RANDOM | ts_omap.irq_type,
+ OMAP_TS_NAME, &ts_omap)) {
+ printk(KERN_ERR
+ "omap_ts.c: Could not allocate touchscreen IRQ!\n");
+ ts_omap.irq = -1;
+ ts_omap.dev->remove();
+ input_free_device(ts_omap.inputdevice);
+ return -EINVAL;
+ }
+ ts_omap.irq_enabled = 1;
+ } else {
+ printk(KERN_ERR "omap_ts.c: No touchscreen IRQ assigned!\n");
+ ts_omap.dev->remove();
+ input_free_device(ts_omap.inputdevice);
+ return -EINVAL;
+ }
+
+ ts_omap.inputdevice->name = OMAP_TS_NAME;
+ ts_omap.inputdevice->dev = &pdev->dev;
+ ts_omap.inputdevice->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+ ts_omap.inputdevice->keybit[BIT_WORD(BTN_TOUCH)] |= BIT(BTN_TOUCH);
+ ts_omap.inputdevice->absbit[0] =
+ BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE);
+ input_register_device(ts_omap.inputdevice);
+
+ ts_omap.dev->enable();
+
+ printk("OMAP touchscreen driver initialized\n");
+
+ return 0;
+}
+
+static int omap_ts_remove(struct platform_device *pdev)
+{
+ ts_omap.dev->disable();
+ input_unregister_device(ts_omap.inputdevice);
+ if (ts_omap.irq != -1)
+ free_irq(ts_omap.irq, &ts_omap);
+
+ ts_omap.dev->remove();
+
+ return 0;
+}
+
+static int omap_ts_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ ts_omap.dev->disable();
+ return 0;
+}
+
+static int omap_ts_resume(struct platform_device *pdev)
+{
+ ts_omap.dev->enable();
+ return 0;
+}
+
+static void omap_ts_device_release(struct device *dev)
+{
+ /* Nothing */
+}
+static struct platform_driver omap_ts_driver = {
+ .probe = omap_ts_probe,
+ .remove = omap_ts_remove,
+ .suspend = omap_ts_suspend,
+ .resume = omap_ts_resume,
+ .driver = {
+ .name = OMAP_TS_NAME,
+ },
+};
+
+static struct platform_device omap_ts_device = {
+ .name = OMAP_TS_NAME,
+ .id = -1,
+ .dev = {
+ .release = omap_ts_device_release,
+ },
+};
+
+static int __init omap_ts_init(void)
+{
+ int ret;
+
+ if (machine_is_omap_osk() || machine_is_omap_innovator())
+ return -ENODEV;
+
+ ret = platform_device_register(&omap_ts_device);
+ if (ret != 0)
+ return -ENODEV;
+
+ ret = platform_driver_register(&omap_ts_driver);
+ if (ret != 0) {
+ platform_device_unregister(&omap_ts_device);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static void __exit omap_ts_exit(void)
+{
+ platform_driver_unregister(&omap_ts_driver);
+ platform_device_unregister(&omap_ts_device);
+}
+
+module_init(omap_ts_init);
+module_exit(omap_ts_exit);
+
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/touchscreen/omap/omap_ts.h b/drivers/input/touchscreen/omap/omap_ts.h
new file mode 100644
index 0000000..bef8e17
--- /dev/null
+++ b/drivers/input/touchscreen/omap/omap_ts.h
@@ -0,0 +1,57 @@
+/*
+ * omap_ts.h - header file for OMAP touchscreen support
+ *
+ * Copyright (c) 2002 MontaVista Software Inc.
+ * Copyright (c) 2004 Texas Instruments, Inc.
+ *
+ * Assembled using driver code copyright the companies above.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef __OMAP_TS_H
+#define __OMAP_TS_H
+
+#ifdef DEBUG
+#define DEBUG_TS(fmt...) printk(fmt)
+#else
+#define DEBUG_TS(fmt...) do { } while (0)
+#endif
+
+struct omap_ts_t;
+
+struct ts_device {
+ int (*probe) (struct omap_ts_t *);
+ void (*read) (u16 *);
+ void (*enable) (void);
+ void (*disable) (void);
+ void (*remove) (void);
+ int (*penup) (void);
+};
+
+struct omap_ts_t{
+ struct input_dev * inputdevice;
+ struct timer_list ts_timer; // Timer for triggering acquisitions
+ int touched;
+ int irq;
+ int irq_type;
+ int irq_enabled;
+ struct ts_device *dev;
+ spinlock_t lock;
+};
+
+extern struct ts_device hx_ts;
+
+#endif /* __OMAP_TS_H */
diff --git a/drivers/input/touchscreen/omap/ts_hx.c b/drivers/input/touchscreen/omap/ts_hx.c
new file mode 100644
index 0000000..9f82f5a
--- /dev/null
+++ b/drivers/input/touchscreen/omap/ts_hx.c
@@ -0,0 +1,184 @@
+/*
+ * input/touchscreen/omap/ts_hx.c
+ * touchscreen support for OMAP H3 and H2 boards
+ *
+ * Copyright (c) 2002 MontaVista Software Inc.
+ * Copyright (c) 2004 Texas Instruments, Inc.
+ *
+ * Assembled using driver code copyright the companies above.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * History:
+ * 9/12/2004 Srinath Modified and integrated H2 and H3 code
+ *
+ */
+
+#include <linux/input.h>
+#include <linux/device.h>
+#include <asm/mach-types.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/mux.h>
+#include <asm/arch/hardware.h>
+#include <asm/hardware/tsc2101.h>
+
+#include "../drivers/ssi/omap-tsc2101.h"
+#include "omap_ts.h"
+
+#define H2_GPIO_NUM 4
+#define H3_GPIO_NUM 48
+
+#define OMAP_TSC2101_XRES 500
+#define TOUCHSCREEN_DATA_REGISTERS_PAGE 0x0
+#define TOUCHSCREEN_CONTROL_REGISTERS_PAGE 0x1
+#define OMAP_TSC2101_READ_MAX 0x4
+#define TSC2101_GETSTATUS(ret) (((ret) >> 11) & 0x1)
+#define TSC2101_MASKVAL 0xFFF
+#define TSC2101_PRESSUREVAL(x) ((x) << 12)
+
+static int hx_ts_penup(void);
+static int hx_ts_probe(struct omap_ts_t *ts);
+static void hx_ts_read(u16 * data);
+static void hx_ts_enable(void);
+static void hx_ts_disable(void);
+#ifdef MODULE
+static void hx_ts_remove(void);
+#endif
+
+struct ts_device hx_ts = {
+ .probe = hx_ts_probe,
+ .read = hx_ts_read,
+ .enable = hx_ts_enable,
+ .disable = hx_ts_disable,
+ .remove = __exit_p(hx_ts_remove),
+ .penup = hx_ts_penup,
+};
+
+static int hx_ts_penup(void)
+{
+ int ret = 0;
+ /* Read the status register */
+ ret = omap_tsc2101_read(TOUCHSCREEN_CONTROL_REGISTERS_PAGE,
+ TSC2101_TS_STATUS);
+ /* Check for availability of data in status register */
+ ret = TSC2101_GETSTATUS(ret);
+ return !ret;
+
+}
+
+static int __init hx_ts_probe(struct omap_ts_t *ts)
+{
+ unsigned gpio;
+
+ if (machine_is_omap_h2()) {
+ gpio = H2_GPIO_NUM;
+ omap_cfg_reg(P20_1610_GPIO4);
+ } else if (machine_is_omap_h3()) {
+ gpio = H3_GPIO_NUM;
+ omap_cfg_reg(W19_1610_GPIO48);
+ } else
+ return -ENODEV;
+
+ ts->irq = OMAP_GPIO_IRQ(gpio);
+ if (omap_request_gpio(gpio) != 0) {
+ printk(KERN_ERR "hX_ts_init.c: Could not reserve GPIO!\n");
+ return -EINVAL;
+ };
+
+ omap_set_gpio_direction(gpio, 1);
+ ts->irq_type = IRQF_TRIGGER_FALLING;
+ return 0;
+}
+
+static void hx_ts_read(u16 * values)
+{
+ s32 t, p = 0;
+ int i;
+
+ /* Read X, Y, Z1 and Z2 */
+ omap_tsc2101_reads(TOUCHSCREEN_DATA_REGISTERS_PAGE, TSC2101_TS_X,
+ values, OMAP_TSC2101_READ_MAX);
+
+ for (i = 0; i < OMAP_TSC2101_READ_MAX; i++)
+ values[i] &= TSC2101_MASKVAL;
+
+ /* Calculate Pressure */
+ if (values[TSC2101_TS_Z1] != 0) {
+ t = ((OMAP_TSC2101_XRES * values[TSC2101_TS_X]) *
+ (values[TSC2101_TS_Z2] - values[TSC2101_TS_Z1]));
+ p = t / (u32) (TSC2101_PRESSUREVAL(values[TSC2101_TS_Z1]));
+ if (p < 0)
+ p = 0;
+ }
+
+ values[TSC2101_TS_Z1] = p;
+}
+
+static void hx_ts_enable(void)
+{
+ int ret = omap_tsc2101_enable();
+ if (ret) {
+ printk(KERN_ERR "FAILED TO INITIALIZE TSC CODEC\n");
+ return;
+ }
+
+ /* PINTDAV is data available only */
+ omap_tsc2101_write(TOUCHSCREEN_CONTROL_REGISTERS_PAGE,
+ TSC2101_TS_STATUS, TSC2101_DATA_AVAILABLE);
+ /* disable buffer mode */
+ omap_tsc2101_write(TOUCHSCREEN_CONTROL_REGISTERS_PAGE,
+ TSC2101_TS_BUFFER_CTRL, TSC2101_BUFFERMODE_DISABLE);
+ /* use internal reference, 100 usec power-up delay,
+ * * power down between conversions, 1.25V internal reference */
+ omap_tsc2101_write(TOUCHSCREEN_CONTROL_REGISTERS_PAGE,
+ TSC2101_TS_REF_CTRL, TSC2101_REF_POWERUP);
+ /* enable touch detection, 84usec precharge time, 32 usec sense time */
+ omap_tsc2101_write(TOUCHSCREEN_CONTROL_REGISTERS_PAGE,
+ TSC2101_TS_CONFIG_CTRL, TSC2101_ENABLE_TOUCHDETECT);
+ /* 3 msec conversion delays */
+ omap_tsc2101_write(TOUCHSCREEN_CONTROL_REGISTERS_PAGE,
+ TSC2101_TS_PROG_DELAY, TSC2101_PRG_DELAY);
+ /*
+ * TSC2101-controlled conversions
+ * 12-bit samples
+ * continuous X,Y,Z1,Z2 scan mode
+ * average (mean) 4 samples per coordinate
+ * 1 MHz internal conversion clock
+ * 500 usec panel voltage stabilization delay
+ */
+ omap_tsc2101_write(TOUCHSCREEN_CONTROL_REGISTERS_PAGE,
+ TSC2101_TS_ADC_CTRL, TSC2101_ADC_CONTROL);
+
+ return;
+
+}
+
+static void hx_ts_disable(void)
+{
+ /* stop conversions and power down */
+ omap_tsc2101_write(TOUCHSCREEN_CONTROL_REGISTERS_PAGE,
+ TSC2101_TS_ADC_CTRL, TSC2101_ADC_POWERDOWN);
+ omap_tsc2101_disable();
+}
+
+#ifdef MODULE
+static void __exit hx_ts_remove(void)
+{
+ if (machine_is_omap_h2())
+ omap_free_gpio(H2_GPIO_NUM);
+ else if (machine_is_omap_h3())
+ omap_free_gpio(H3_GPIO_NUM);
+}
+#endif
--
1.6.0.1.141.g445ca
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