Dear sirs,
The patch adds this touch screen driver to w90p910 ARM platform.
It is based on version of 2.6.30-rc3.
would you please give me some advice about this patch?
arch/arm/mach-w90x900/include/mach/regs-adc.h | 57 +++
drivers/input/touchscreen/Kconfig | 6
drivers/input/touchscreen/Makefile | 1
drivers/input/touchscreen/w90p910_ts.c | 229 ++++++++++++++++
4 files changed, 293 insertions(+)
---
Add this touch screen driver c file for W90P910 platform.
It is only one part of patch,the other such as maping,
device register will be submitted soon after.
Signed-off-by: Wan ZongShun <mcuos.com@xxxxxxxxx>
diff -Npur linux-2.6.29/arch/arm/mach-w90x900/include/mach/regs-adc.h
linux-2.6.30-rc3/arch/arm/mach-w90x900/include/mach/regs-adc.h
--- linux-2.6.29/arch/arm/mach-w90x900/include/mach/regs-adc.h 1970-01-01
08:00:00.000000000 +0800
+++ linux-2.6.30-rc3/arch/arm/mach-w90x900/include/mach/regs-adc.h
2009-04-27
20:53:57.000000000 +0800
@@ -0,0 +1,57 @@
+/*
+ * arch/arm/mach-w90x900/include/mach/regs-adc.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * Wan ZongShun <mcuos.com@xxxxxxxxx>
+ *
+ * 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.
+ *
+ */
+
+#ifndef __ASM_ARM_REGS_ADC_H
+#define __ASM_ARM_REGS_ADC_H
+
+/* ADC Control Registers */
+#define ADC_BA W90X900_VA_ADC
+#define REG_ADC_CON (ADC_BA+0x00)
+#define REG_ADC_TSC (ADC_BA+0x04)
+#define REG_ADC_DLY (ADC_BA+0x08)
+#define REG_ADC_XDATA (ADC_BA+0x0C)
+#define REG_ADC_YDATA (ADC_BA+0x10)
+#define REG_ADC_LV_CON (ADC_BA+0x14)
+#define REG_ADC_LV_STS (ADC_BA+0x18)
+#define ADC_INT 0x040000
+#define WT_INT 0x100000
+#define ADC_RESOULTION 1024
+
+#define ADC_WRITE(addr, val) __raw_writel(val, addr)
+#define ADC_READ(addr) __raw_readl(addr)
+#define DEV_NAME "ADC"
+
+#define TSDEV_SCREEN_X 320
+#define TSDEV_SCREEN_Y 240
+
+unsigned int INTERVAL_TIME = 4;
+unsigned int pre_x, pre_y, STATE;
+unsigned int nRadioWidth1, nRadioWidth2, nRadioHeight1, nRadioHeight2;
+int adc_get = 0, adc_block = 1;
+
+static struct input_dev *w90p910_dev;
+static DECLARE_MUTEX(sem);
+static DEFINE_SPINLOCK(w90x900_touch_lock);
+static struct timer_list ts_timer1;
+
+struct _pointmap{
+ int x;
+ int y;
+ int status;
+};
+
+struct _pointmap point;
+
+#endif/*__ASM_ARM_REGS_ADC_H*/
diff -Npur linux-2.6.29/drivers/input/touchscreen/Kconfig
linux-2.6.30-rc3/drivers/input/touchscreen/Kconfig
--- linux-2.6.29/drivers/input/touchscreen/Kconfig 2009-04-27
14:10:36.000000000 +0800
+++ linux-2.6.30-rc3/drivers/input/touchscreen/Kconfig 2009-04-27
19:50:36.000000000 +0800
@@ -466,4 +466,10 @@ config TOUCHSCREEN_TSC2007
To compile this driver as a module, choose M here: the
module will be called tsc2007.
+config TOUCHSCREEN_W90X900
+ tristate "W90P910 touchscreens"
+ depends on CPU_W90P910
+ help
+ Compile this driver to support W90P910 touchscreen.
+
endif
diff -Npur linux-2.6.29/drivers/input/touchscreen/Makefile
linux-2.6.30-rc3/drivers/input/touchscreen/Makefile
--- linux-2.6.29/drivers/input/touchscreen/Makefile 2009-04-27
14:10:36.000000000 +0800
+++ linux-2.6.30-rc3/drivers/input/touchscreen/Makefile 2009-04-27
19:50:49.000000000 +0800
@@ -37,3 +37,4 @@ wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9712) +
wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9713) += wm9713.o
obj-$(CONFIG_TOUCHSCREEN_WM97XX_MAINSTONE) += mainstone-wm97xx.o
obj-$(CONFIG_TOUCHSCREEN_WM97XX_ZYLONITE) += zylonite-wm97xx.o
+obj-$(CONFIG_TOUCHSCREEN_W90X900) += w90p910_ts.o
diff -Npur linux-2.6.29/drivers/input/touchscreen/w90p910_ts.c
linux-2.6.30-rc3/drivers/input/touchscreen/w90p910_ts.c
--- linux-2.6.29/drivers/input/touchscreen/w90p910_ts.c 1970-01-01
08:00:00.000000000 +0800
+++ linux-2.6.30-rc3/drivers/input/touchscreen/w90p910_ts.c 2009-04-27
20:55:21.000000000 +0800
@@ -0,0 +1,229 @@
+/*
+ * linux/driver/input/w90x900_ts.c
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * Wan ZongShun <mcuos.com@xxxxxxxxx>
+ *
+ * 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.
+ *
+ */
+
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+
+#include <mach/hardware.h>
+#include <mach/regs-clock.h>
+#include <mach/regs-adc.h>
+
+short ADCDataIn(void)
+{
+ pre_x = ((ADC_READ(REG_ADC_XDATA)*TSDEV_SCREEN_X)/ADC_RESOULTION);
+ pre_y = ((ADC_READ(REG_ADC_YDATA)*TSDEV_SCREEN_Y)/ADC_RESOULTION);
+
+ input_report_key(w90p910_dev, BTN_TOUCH, 1);
+ input_report_abs(w90p910_dev, ABS_X, pre_x);
+ input_report_abs(w90p910_dev, ABS_Y, pre_y);
+ input_report_abs(w90p910_dev, ABS_PRESSURE, 1000);
+ input_sync(w90p910_dev);
+ return 0;
+}
+
+static void wb_sensitivity(unsigned long sensi)
+{
+ unsigned long flags;
+ down_interruptible(&sem);
+ spin_lock_irqsave(&w90x900_touch_lock, flags);
+
+ if ((ADC_READ(REG_ADC_TSC)&0x1) == 0x1) {
+
+ ADC_WRITE(REG_ADC_TSC, 0x0);
+ ADC_WRITE(REG_ADC_CON, (ADC_READ(REG_ADC_CON)|
+ 0x00206000)&0xFF7F7FFF);
+ STATE = 1;
+ } else{
+ input_sync(w90p910_dev);
+ input_report_key(w90p910_dev, BTN_TOUCH, 0);
+ input_report_abs(w90p910_dev, ABS_PRESSURE, 0);
+ ADC_WRITE(REG_ADC_CON, (ADC_READ(REG_ADC_CON)|
+ 0x0080C000)&0xFFCBFFFF);
+ STATE = 0;
+ point.status = 0;
+ }
+ up(&sem);
+ spin_unlock_irqrestore(&w90x900_touch_lock, flags);
+}
+
+static irqreturn_t wb_adc_irq(int irq, void *dev_id)
+{
+ unsigned long flags;
+
+ down_interruptible(&sem);
+ spin_lock_irqsave(&w90x900_touch_lock, flags);
+ adc_get = 1;
+
+ if (((ADC_READ(REG_ADC_CON)&WT_INT)>>20) == 1 && STATE == 0) {
+ STATE = 1;
+ ADC_WRITE(REG_ADC_TSC, 0x0);
+ ADC_WRITE(REG_ADC_CON, (ADC_READ(REG_ADC_CON)|
+ 0x00206000)&0xFF6F7FFF);
+ }
+
+ if (((ADC_READ(REG_ADC_CON)&ADC_INT)>>18) == 1 && STATE == 1) {
+ STATE = 2;
+ ADC_WRITE(REG_ADC_TSC, 0x100);
+ ADC_WRITE(REG_ADC_CON, (ADC_READ(REG_ADC_CON)|
+ 0x00206000)&0xFF7B7FFF);
+ }
+
+ if (((ADC_READ(REG_ADC_CON)&ADC_INT)>>18) == 1 && STATE == 2) {
+ ADCDataIn();
+ point.status = 1;
+ ADC_WRITE(REG_ADC_CON, (ADC_READ(REG_ADC_CON)|
+ 0x0000C000)&0xFF5BFFFF);
+
+ del_timer(&ts_timer1);
+ ts_timer1.expires = jiffies+INTERVAL_TIME;
+ ts_timer1.data = 0UL;
+ add_timer(&ts_timer1);
+
+ }
+ up(&sem);
+ spin_unlock_irqrestore(&w90x900_touch_lock, flags);
+ return IRQ_HANDLED;
+}
+
+static int wb_adc_open(struct input_dev *dev)
+{
+
+ adc_block = 1;
+ adc_get = 1;
+ init_timer(&ts_timer1);
+ ts_timer1.function = wb_sensitivity;
+ /* reset */
+ ADC_WRITE(REG_ADC_CON, 0x00010000);
+ udelay(1000);
+ ADC_WRITE(REG_ADC_CON, 0x00000000);
+ udelay(1000);
+ /* ADC setting */
+ /* set delay and screen type */
+ ADC_WRITE(REG_ADC_TSC, ADC_READ(REG_CLKSEL) & 0xFFFFFFF9);
+ ADC_WRITE(REG_ADC_DLY, 0xF00);
+ /* waitting for trigger mode */
+ ADC_WRITE(REG_ADC_CON, (ADC_READ(REG_ADC_CON)|
+ 0x0082C008) & 0xFFEBFF09);
+ STATE = 0;
+ pre_x = pre_y = 0;
+ return 0;
+}
+
+static void wb_adc_close(struct input_dev *dev)
+{
+ free_irq(IRQ_ADC, NULL);
+}
+
+static int __init w90x900ts_probe(struct platform_device *pdev)
+{
+ int irq, result, err;
+ unsigned int tmp32;
+ struct resource *res;
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ dev_err(&pdev->dev, "no irq for device\n");
+ return -ENOENT;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -ENXIO;
+
+ if (!request_mem_region(res->start, res->end - res->start + 1,
+ pdev->name)) {
+ dev_err(&pdev->dev, "Memory region busy\n");
+ err = -EBUSY;
+ goto fail;
+ }
+
+ /* enable the ADC clock */
+ tmp32 = ADC_READ(REG_CLKEN);
+ tmp32 = tmp32 | 0x10000000;
+ ADC_WRITE(REG_CLKEN, tmp32);
+
+ w90p910_dev = input_allocate_device();
+
+ if (!w90p910_dev) {
+ printk(KERN_ERR "w90p910_dev: not enough memory\n");
+ err = -ENOMEM;
+ goto fail;
+ }
+
+ w90p910_dev->name = "W90P910 TouchScreen";
+ w90p910_dev->phys = "input/event0";
+ w90p910_dev->id.bustype = BUS_HOST;
+ w90p910_dev->id.vendor = 0x0005;
+ w90p910_dev->id.product = 0x0001;
+ w90p910_dev->id.version = 0x0100;
+
+ w90p910_dev->open = wb_adc_open;
+ w90p910_dev->close = wb_adc_close;
+
+ w90p910_dev->evbit[0] = BIT_MASK(EV_KEY)|
+ BIT_MASK(EV_ABS) | BIT_MASK(EV_SYN);
+ w90p910_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
+
+ input_set_abs_params(w90p910_dev, ABS_X, 0, 0x400, 0, 0);
+ input_set_abs_params(w90p910_dev, ABS_Y, 0, 0x400, 0, 0);
+ input_set_abs_params(w90p910_dev, ABS_PRESSURE, 0, 1000, 0, 0);
+
+ result = request_irq(irq, wb_adc_irq, IRQF_DISABLED, DEV_NAME, NULL);
+ if (result != 0)
+ printk(KERN_ERR"register the wb_adc_irq failed!\n");
+
+ input_register_device(w90p910_dev);
+ return 0;
+
+fail:
+ input_free_device(w90p910_dev);
+ return err;
+}
+
+static int w90x900ts_remove(struct platform_device *pdev)
+{
+
+ input_unregister_device(w90p910_dev);
+ return 0;
+}
+
+static struct platform_driver w90x900ts_driver = {
+ .probe = w90x900ts_probe,
+ .remove = w90x900ts_remove,
+ .driver = {
+ .name = "w90x900-ts",
+ .owner = THIS_MODULE,
+ },
+};
+
+int __init w90x900ts_init(void)
+{
+ return platform_driver_register(&w90x900ts_driver);
+}
+
+static void __exit w90x900ts_exit(void)
+{
+ platform_driver_unregister(&w90x900ts_driver);
+}
+
+module_init(w90x900ts_init);
+module_exit(w90x900ts_exit);
+
+MODULE_AUTHOR("PT50 zswan <mcuos.com@xxxxxxxxx>");
+MODULE_DESCRIPTION("w90p910 touch screen driver!");
+MODULE_LICENSE("GPL");
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