linux-ezx 2.6.21: update patches to r1995, gives you working ts, keys and some powermanagement

1 files changed, 399 insertions, 0 deletions

diff --git a/packages/linux/linux-ezx-2.6.21/ezx-ts.patch b/packages/linux/linux-ezx-2.6.21/ezx-ts.patch
new file mode 100644
index 0000000000..1dd88efd6e
--- /dev/null
+++ b/packages/linux/linux-ezx-2.6.21/ezx-ts.patch
@@ -0,0 +1,399 @@
+Index: linux-2.6.21/drivers/input/touchscreen/Kconfig
+===================================================================
+--- linux-2.6.21.orig/drivers/input/touchscreen/Kconfig	2007-04-26 05:08:32.000000000 +0200
++++ linux-2.6.21/drivers/input/touchscreen/Kconfig	2007-04-26 23:27:05.000000000 +0200
+@@ -164,4 +164,16 @@
+ 	  To compile this driver as a module, choose M here: the
+ 	  module will be called ucb1400_ts.
+ 
++config TOUCHSCREEN_PCAP
++	tristate "Motorola PCAP touchscreen"
++	depends on PXA_EZX_PCAP
++	help
++	  Say Y here if you have a Motorola EZX (E680, A780) telephone
++	  and want to support the built-in touchscreen.
++
++	  If unsure, say N.
++
++	  To compile this driver as a module, choose M here: the
++	  module will be called hp680_ts_input.
++
+ endif
+Index: linux-2.6.21/drivers/input/touchscreen/Makefile
+===================================================================
+--- linux-2.6.21.orig/drivers/input/touchscreen/Makefile	2007-04-26 05:08:32.000000000 +0200
++++ linux-2.6.21/drivers/input/touchscreen/Makefile	2007-04-26 23:27:52.000000000 +0200
+@@ -16,3 +16,4 @@
+ obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT)	+= touchright.o
+ obj-$(CONFIG_TOUCHSCREEN_TOUCHWIN)	+= touchwin.o
+ obj-$(CONFIG_TOUCHSCREEN_UCB1400)	+= ucb1400_ts.o
++obj-$(CONFIG_TOUCHSCREEN_PCAP)	+= pcap_ts.o
+Index: linux-2.6.21/drivers/input/touchscreen/pcap_ts.c
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.21/drivers/input/touchscreen/pcap_ts.c	2007-04-26 23:27:05.000000000 +0200
+@@ -0,0 +1,364 @@
++/*
++ * pcap_ts.c - Touchscreen driver for Motorola PCAP2 based touchscreen as found
++ * 	       in the EZX phone platform.
++ *
++ *  Copyright (C) 2006 Harald Welte <laforge@openezx.org>
++ *
++ *  Based on information found in the original Motorola 2.4.x ezx-ts.c driver.
++ *
++ *  This program is free software; you can redistribute it and/or modify
++ *  it under the terms of the GNU General Public License version 2 as
++ *  published by the Free Software Foundation.
++ *
++ * TODO:
++ * 	split this in a hardirq handler and a tasklet/bh
++ * 	suspend/resume support
++ */
++
++#include <linux/module.h>
++#include <linux/init.h>
++#include <linux/fs.h>
++#include <linux/string.h>
++#include <linux/pm.h>
++#include <linux/timer.h>
++#include <linux/config.h>
++#include <linux/interrupt.h>
++#include <linux/platform_device.h>
++#include <linux/input.h>
++
++#include <asm/arch/hardware.h>
++#include <asm/arch/pxa-regs.h>
++
++#include "../../misc/ezx/ssp_pcap.h"
++
++#if 1
++#define DEBUGP(x, args ...) printk(KERN_DEBUG "%s: " x, __FUNCTION__, ## args)
++#else
++#define DEBUGP(x, args ...)
++#endif
++
++#define PRESSURE 1
++#define COORDINATE 2
++
++struct pcap_ts {
++	int irq_xy;
++	int irq_touch;
++	struct input_dev *input;
++	struct timer_list timer;
++
++	u_int16_t x, y;
++	u_int16_t pressure, pressure_last;
++
++	u_int8_t read_state;
++};
++
++#define X_AXIS_MIN	0
++#define X_AXIS_MAX	1023
++
++#define Y_AXIS_MAX	X_AXIS_MAX
++#define Y_AXIS_MIN	X_AXIS_MIN
++
++#define PRESSURE_MAX	X_AXIS_MAX
++#define PRESSURE_MIN	X_AXIS_MIN
++
++static int pcap_ts_mode(u_int32_t mode)
++{
++	int ret;
++
++	u_int32_t tmp;
++
++	ret = ezx_pcap_read(SSP_PCAP_ADJ_ADC1_REGISTER, &tmp);
++	if (ret < 0)
++		return ret;
++
++	tmp &= ~SSP_PCAP_TOUCH_PANEL_POSITION_DETECT_MODE_MASK;
++	tmp |= mode;
++	ret = ezx_pcap_write(SSP_PCAP_ADJ_ADC1_REGISTER, tmp);
++
++	DEBUGP("set ts mode ");
++	if (mode == PCAP_TS_POSITION_XY_MEASUREMENT)
++		DEBUGP("COORD\n");
++	else if (mode == PCAP_TS_PRESSURE_MEASUREMENT)
++		DEBUGP("PRESS\n");
++	else if (mode == PCAP_TS_STANDBY_MODE)
++		DEBUGP("STANDBY\n");
++	else
++		printk("UNKNOWN\n");
++
++	return ret;
++}
++
++/* issue a XY read command to the ADC of PCAP2.  Well get an ADCDONE2 interrupt
++ * once the result of the conversion is available */
++static int pcap_ts_start_xy_read(struct pcap_ts *pcap_ts)
++{
++	int ret;
++	u_int32_t tmp;
++	DEBUGP("start xy read in mode %s\n", 
++		pcap_ts->read_state == COORDINATE ? "COORD" : "PRESS");
++
++	ret = ezx_pcap_read(SSP_PCAP_ADJ_ADC1_REGISTER, &tmp);
++	if (ret < 0)
++		return ret;
++
++	tmp &= SSP_PCAP_ADC_START_VALUE_SET_MASK;
++	tmp |= SSP_PCAP_ADC_START_VALUE;
++
++	ret = ezx_pcap_write(SSP_PCAP_ADJ_ADC1_REGISTER, tmp);
++	if (ret < 0)
++		return ret;
++
++	ret = ezx_pcap_bit_set(SSP_PCAP_ADJ_BIT_ADC2_ASC, 1);
++
++	return ret;
++}
++
++/* read the XY result from the ADC of PCAP2 */
++static int pcap_ts_get_xy_value(struct pcap_ts *pcap_ts)
++{
++	int ret;
++	u_int32_t tmp;
++
++	DEBUGP("get xy value in mode %s\n", 
++		pcap_ts->read_state == COORDINATE ? "COORD" : "PRESS");
++
++	ret = ezx_pcap_read(SSP_PCAP_ADJ_ADC2_REGISTER, &tmp);
++	if (ret < 0)
++		return ret;
++
++	if (tmp & 0x00400000)
++		return -EIO;
++
++	if (pcap_ts->read_state == COORDINATE) {
++		pcap_ts->x = (tmp & SSP_PCAP_ADD1_VALUE_MASK);
++		pcap_ts->y = (tmp & SSP_PCAP_ADD2_VALUE_MASK)
++						>>SSP_PCAP_ADD2_VALUE_SHIFT;
++	} else {
++		pcap_ts->pressure_last = pcap_ts->pressure;
++		pcap_ts->pressure = (tmp & SSP_PCAP_ADD2_VALUE_MASK)
++						>>SSP_PCAP_ADD2_VALUE_SHIFT;
++	}
++
++	return 0;
++}
++
++/* PCAP2 interrupts us when ADC conversion result is available */
++static irqreturn_t pcap_ts_irq_xy(int irq, void *dev_id, struct pt_regs *regs)
++{
++	struct pcap_ts *pcap_ts = dev_id;
++
++	if (pcap_ts_get_xy_value(pcap_ts) < 0) {
++		printk("pcap_ts: error reading XY value\n");
++		return IRQ_HANDLED;
++	}
++
++	DEBUGP("%s X=%4d, Y=%4d Z=%4d\n",
++		pcap_ts->read_state == COORDINATE ? "COORD" : "PRESS",
++		pcap_ts->x, pcap_ts->y, pcap_ts->pressure);
++
++	if (pcap_ts->read_state == PRESSURE) {
++		input_report_abs(pcap_ts->input, ABS_PRESSURE,
++				 pcap_ts->pressure);
++		if ((pcap_ts->pressure >= PRESSURE_MAX ||
++		     pcap_ts->pressure <= PRESSURE_MIN ) &&
++		    pcap_ts->pressure == pcap_ts->pressure_last) {
++			/* pen has been released */
++			input_report_key(pcap_ts->input, BTN_TOUCH, 0);
++			input_sync(pcap_ts->input);
++
++			pcap_ts->x = pcap_ts->y = 0;
++
++			/* ask PCAP2 to interrupt us if touch event happens
++			 * again */
++			pcap_ts->read_state = PRESSURE;
++			pcap_ts_mode(PCAP_TS_STANDBY_MODE);
++			ezx_pcap_bit_set(SSP_PCAP_ADJ_BIT_MSR_TSM, 0);
++
++			/* no need for timer, we'll get interrupted with
++			 * next touch down event */
++			del_timer(&pcap_ts->timer);
++		} else {
++			/* pen has been touched down */
++			input_report_key(pcap_ts->input, BTN_TOUCH, 1);
++			/* don't input_sync(), we don't know position yet */
++
++			/* switch state machine into coordinate read mode */
++			pcap_ts->read_state = COORDINATE;
++			pcap_ts_mode(PCAP_TS_POSITION_XY_MEASUREMENT);
++			pcap_ts_start_xy_read(pcap_ts);
++
++			mod_timer(&pcap_ts->timer, jiffies + HZ/20);
++		}
++	} else {
++		/* we are in coordinate mode */
++		if (pcap_ts->x <= X_AXIS_MIN || pcap_ts->x >= X_AXIS_MAX ||
++		    pcap_ts->y <= Y_AXIS_MIN || pcap_ts->y >= Y_AXIS_MAX) {
++			DEBUGP("invalid x/y coordinate position: PEN_UP?\n");
++#if 0
++			input_report_key(pcap_ts->input, BTN_TOUCH, 0);
++			pcap_ts->x = pcap_ts->y = 0;
++#endif
++		} else {
++			input_report_abs(pcap_ts->input, ABS_X, pcap_ts->x);
++			input_report_abs(pcap_ts->input, ABS_Y, pcap_ts->y);
++		}
++		input_sync(pcap_ts->input);
++
++		/* switch back to pressure read mode */
++		pcap_ts->read_state = PRESSURE;
++		pcap_ts_mode(PCAP_TS_STANDBY_MODE);
++		ezx_pcap_bit_set(SSP_PCAP_ADJ_BIT_MSR_TSM, 0);
++	}
++
++	return IRQ_HANDLED;
++}
++
++/* PCAP2 interrupts us if the pen touches down */
++static irqreturn_t pcap_ts_irq_touch(int irq, void *dev_id, struct pt_regs *regs)
++{
++	struct pcap_ts *pcap_ts = dev_id;
++	DEBUGP("entered\n");
++
++	/* mask Touchscreen interrupt bit, prevents further touch events
++	 * from being reported to us until we're finished with reading
++	 * both pressure and x/y from ADC */
++	ezx_pcap_bit_set(SSP_PCAP_ADJ_BIT_MSR_TSM, 1);
++	pcap_ts_mode(PCAP_TS_PRESSURE_MEASUREMENT);
++	pcap_ts->read_state = PRESSURE;
++	pcap_ts_start_xy_read(pcap_ts);
++
++	return IRQ_HANDLED;
++}
++
++static void pcap_ts_timer_fn(unsigned long data)
++{
++	struct pcap_ts *pcap_ts = (struct pcap_ts *) data;
++
++	ezx_pcap_bit_set(SSP_PCAP_ADJ_BIT_MSR_TSM, 1);
++	pcap_ts_mode(PCAP_TS_PRESSURE_MEASUREMENT);
++	pcap_ts->read_state = PRESSURE;
++	pcap_ts_start_xy_read(pcap_ts);
++}
++
++static int __init ezxts_probe(struct platform_device *pdev)
++{
++	struct pcap_ts *pcap_ts;
++	struct input_dev *input_dev;
++	int err = -ENOMEM;
++
++	pcap_ts = kzalloc(sizeof(*pcap_ts), GFP_KERNEL);
++	input_dev = input_allocate_device();
++	if (!pcap_ts || !input_dev)
++		goto fail;
++
++	pcap_ts->irq_xy = platform_get_irq(pdev, 0);
++	if (pcap_ts->irq_xy < 0) {
++		err = pcap_ts->irq_xy;
++		goto fail;
++	}
++
++	pcap_ts->irq_touch = platform_get_irq(pdev, 1);
++	if (pcap_ts->irq_touch < 0) {
++		err = pcap_ts->irq_touch;
++		goto fail;
++	}
++
++	ssp_pcap_open(SSP_PCAP_TS_OPEN);
++
++	err = request_irq(pcap_ts->irq_xy, pcap_ts_irq_xy, SA_INTERRUPT,
++			  "PCAP Touchscreen XY", pcap_ts);
++	if (err < 0) {
++		printk(KERN_ERR "pcap_ts: can't grab xy irq %d: %d\n",
++		       pcap_ts->irq_xy, err);
++		goto fail;
++	}
++
++	err = request_irq(pcap_ts->irq_touch, pcap_ts_irq_touch, SA_INTERRUPT,
++			  "PCAP Touchscreen Touch", pcap_ts);
++	if (err < 0) {
++		printk(KERN_ERR "pcap_ts: can't grab touch irq %d: %d\n",
++		       pcap_ts->irq_touch, err);
++		goto fail_xy;
++	}
++
++	pcap_ts->input = input_dev;
++	pcap_ts->read_state = PRESSURE;
++	init_timer(&pcap_ts->timer);
++	pcap_ts->timer.data = (unsigned long) pcap_ts;
++	pcap_ts->timer.function = &pcap_ts_timer_fn;
++
++	platform_set_drvdata(pdev, pcap_ts);
++
++	/* enable pressure interrupt */
++	ezx_pcap_bit_set(SSP_PCAP_ADJ_BIT_MSR_TSM, 0);
++
++	input_dev->name = "EZX PCAP2 Touchscreen";
++	input_dev->phys = "ezxts/input0";
++	input_dev->id.bustype = BUS_HOST;
++	input_dev->id.vendor = 0x0001;
++	input_dev->id.product = 0x0002;
++	input_dev->id.version = 0x0100;
++	input_dev->cdev.dev = &pdev->dev;
++	input_dev->private = pcap_ts;
++
++	input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
++	input_dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
++	input_set_abs_params(input_dev, ABS_X, X_AXIS_MIN, X_AXIS_MAX, 0, 0);
++	input_set_abs_params(input_dev, ABS_Y, Y_AXIS_MIN, Y_AXIS_MAX, 0, 0);
++	input_set_abs_params(input_dev, ABS_PRESSURE, PRESSURE_MIN,
++			     PRESSURE_MAX, 0, 0);
++
++	input_register_device(pcap_ts->input);
++
++	return 0;
++
++fail_xy:
++	free_irq(pcap_ts->irq_xy, pcap_ts);
++fail:
++	input_free_device(input_dev);
++	kfree(pcap_ts);
++
++	return err;
++}
++
++static int ezxts_remove(struct platform_device *pdev)
++{
++	struct pcap_ts *pcap_ts = platform_get_drvdata(pdev);
++
++	del_timer_sync(&pcap_ts->timer);
++
++	free_irq(pcap_ts->irq_touch, pcap_ts);
++	free_irq(pcap_ts->irq_xy, pcap_ts);
++
++	input_unregister_device(pcap_ts->input);
++	kfree(pcap_ts);
++
++	return 0;
++}
++
++static struct platform_driver ezxts_driver = {
++	.probe		= ezxts_probe,
++	.remove		= ezxts_remove,
++	//.suspend	= ezxts_suspend,
++	//.resume		= ezxts_resume,
++	.driver		= {
++		.name	= "pcap-ts",
++	},
++};
++
++static int __devinit ezxts_init(void)
++{
++	return platform_driver_register(&ezxts_driver);
++}
++
++static void __exit ezxts_exit(void)
++{
++	platform_driver_unregister(&ezxts_driver);
++}
++
++module_init(ezxts_init);
++module_exit(ezxts_exit);
++
++MODULE_DESCRIPTION("Motorola PCAP2 touchscreen driver");
++MODULE_AUTHOR("Harald Welte <laforge@openezx.org>");
++MODULE_LICENSE("GPL");