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-rw-r--r--recipes/linux/linux-2.6.28/collie/0013-add-collie-touchscreen-driver.patch528
1 files changed, 528 insertions, 0 deletions
diff --git a/recipes/linux/linux-2.6.28/collie/0013-add-collie-touchscreen-driver.patch b/recipes/linux/linux-2.6.28/collie/0013-add-collie-touchscreen-driver.patch
new file mode 100644
index 0000000000..92159d5649
--- /dev/null
+++ b/recipes/linux/linux-2.6.28/collie/0013-add-collie-touchscreen-driver.patch
@@ -0,0 +1,528 @@
+From 40787f3e48d1cc1e63dc5dd6aeda720f688fc05e Mon Sep 17 00:00:00 2001
+From: Thomas Kunze <thommycheck@gmx.de>
+Date: Mon, 20 Oct 2008 17:44:23 +0200
+Subject: [PATCH 13/23] add collie touchscreen driver
+
+---
+ drivers/input/touchscreen/Kconfig | 6 +
+ drivers/input/touchscreen/Makefile | 1 +
+ drivers/input/touchscreen/collie-ts.c | 449 +++++++++++++++++++++++++++++++++
+ drivers/mfd/Makefile | 1 -
+ include/linux/mfd/ucb1x00.h | 3 +
+ 5 files changed, 459 insertions(+), 1 deletions(-)
+ create mode 100644 drivers/input/touchscreen/collie-ts.c
+
+diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
+index 3ac8cd6..a9f89ed 100644
+--- a/drivers/input/touchscreen/Kconfig
++++ b/drivers/input/touchscreen/Kconfig
+@@ -228,6 +228,12 @@ config TOUCHSCREEN_UCB1200_TS
+ This enabled support for the Pilips UCB1200 touchscreen interface
+ and compatible.
+
++config TOUCHSCREEN_COLLIE_TS
++ tristate "Touchscreen collie support"
++ depends on MCP_UCB1200 && INPUT && !MCP_UCB1200_TS
++ help
++ Driver for touchscreen on collie - sharp sl-5500.
++
+ config TOUCHSCREEN_UCB1400
+ tristate "Philips UCB1400 touchscreen"
+ depends on AC97_BUS
+diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
+index 77ba930..77715cd 100644
+--- a/drivers/input/touchscreen/Makefile
++++ b/drivers/input/touchscreen/Makefile
+@@ -26,6 +26,7 @@ obj-$(CONFIG_TOUCHSCREEN_TOUCHIT213) += touchit213.o
+ obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT) += touchright.o
+ obj-$(CONFIG_TOUCHSCREEN_TOUCHWIN) += touchwin.o
+ obj-$(CONFIG_TOUCHSCREEN_UCB1200_TS) += ucb1x00-ts.o
++obj-$(CONFIG_TOUCHSCREEN_COLLIE_TS) += collie-ts.o
+ obj-$(CONFIG_TOUCHSCREEN_UCB1400) += ucb1400_ts.o
+ obj-$(CONFIG_TOUCHSCREEN_WM97XX) += wm97xx-ts.o
+ wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9705) += wm9705.o
+diff --git a/drivers/input/touchscreen/collie-ts.c b/drivers/input/touchscreen/collie-ts.c
+new file mode 100644
+index 0000000..c7c0272
+--- /dev/null
++++ b/drivers/input/touchscreen/collie-ts.c
+@@ -0,0 +1,449 @@
++/*
++ * Touchscreen driver for UCB1x00-based touchscreens
++ *
++ * Copyright (C) 2001 Russell King, All Rights Reserved.
++ * Copyright (C) 2005 Pavel Machek
++ *
++ * 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.
++ *
++ * 21-Jan-2002 <jco@ict.es> :
++ *
++ * Added support for synchronous A/D mode. This mode is useful to
++ * avoid noise induced in the touchpanel by the LCD, provided that
++ * the UCB1x00 has a valid LCD sync signal routed to its ADCSYNC pin.
++ * It is important to note that the signal connected to the ADCSYNC
++ * pin should provide pulses even when the LCD is blanked, otherwise
++ * a pen touch needed to unblank the LCD will never be read.
++ */
++#include <linux/module.h>
++#include <linux/moduleparam.h>
++#include <linux/init.h>
++#include <linux/smp.h>
++#include <linux/smp_lock.h>
++#include <linux/sched.h>
++#include <linux/completion.h>
++#include <linux/delay.h>
++#include <linux/string.h>
++#include <linux/input.h>
++#include <linux/device.h>
++#include <linux/freezer.h>
++#include <linux/slab.h>
++#include <linux/kthread.h>
++#include <linux/semaphore.h>
++
++#include <mach/dma.h>
++#include <mach/collie.h>
++#include <asm/mach-types.h>
++
++#include <linux/mfd/ucb1x00.h>
++
++struct ucb1x00_ts {
++ struct input_dev *idev;
++ struct ucb1x00 *ucb;
++
++ wait_queue_head_t irq_wait;
++ struct task_struct *rtask;
++ u16 x_res;
++ u16 y_res;
++
++ unsigned int adcsync:1;
++};
++
++static int adcsync;
++
++/**********************************
++
++ ................
++ . . = 340
++ . .
++ . ^.
++ . ^.
++ . ^.
++ . ^.
++ . .
++ . X. = 10
++ . <<<<<<<< Y .
++ ................
++ . Sharp =200
++ . .
++ . - O - .
++ . .
++ ................
++
++**********************************/
++
++
++static inline void ucb1x00_ts_evt_add(struct ucb1x00_ts *ts, u16 pressure, u16 x, u16 y)
++{
++ struct input_dev *idev = ts->idev;
++
++ input_report_abs(idev, ABS_X, x);
++ input_report_abs(idev, ABS_Y, y);
++ input_report_abs(idev, ABS_PRESSURE, pressure);
++ input_report_key(idev, BTN_TOUCH, 1);
++ input_sync(idev);
++}
++
++static inline void ucb1x00_ts_event_release(struct ucb1x00_ts *ts)
++{
++ struct input_dev *idev = ts->idev;
++
++ input_report_abs(idev, ABS_PRESSURE, 0);
++ input_report_key(idev, BTN_TOUCH, 0);
++ input_sync(idev);
++}
++
++/*
++ * Switch to interrupt mode. This set touchscreen to interrupt
++ * mode, so that chip is able to send interrupt.
++ */
++static inline void ucb1x00_ts_mode_int(struct ucb1x00_ts *ts)
++{
++ ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
++ UCB_TS_CR_TSMX_POW | UCB_TS_CR_TSPX_POW |
++ UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_GND |
++ UCB_TS_CR_MODE_INT);
++}
++
++/*
++ * Switch to pressure mode, and read pressure. We don't need to wait
++ * here, since both plates are being driven.
++ *
++ * set_read_pressure() in sharp code
++ */
++static inline void ucb1x00_ts_read_pressure(struct ucb1x00_ts *ts)
++{
++ ucb1x00_io_write(ts->ucb, COLLIE_TC35143_GPIO_TBL_CHK, 0);
++ ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
++ UCB_TS_CR_TSPX_POW | UCB_TS_CR_TSMX_POW |
++ UCB_TS_CR_MODE_POS | UCB_TS_CR_BIAS_ENA);
++
++ ucb1x00_reg_write(ts->ucb, UCB_ADC_CR, ts->ucb->adc_cr |
++ UCB_ADC_INP_AD2 |
++ UCB_ADC_SYNC_ENA);
++ udelay(100);
++ ucb1x00_reg_write(ts->ucb, UCB_ADC_CR, ts->ucb->adc_cr |
++ UCB_ADC_INP_AD2 |
++ UCB_ADC_SYNC_ENA | UCB_ADC_START);
++}
++
++/*
++ * Switch to X position mode and measure Y plate. We switch the plate
++ * configuration in pressure mode, then switch to position mode. This
++ * gives a faster response time. Even so, we need to wait about 55us
++ * for things to stabilise.
++ */
++static inline void ucb1x00_ts_read_xpos(struct ucb1x00_ts *ts)
++{
++ ucb1x00_io_write(ts->ucb, 0, COLLIE_TC35143_GPIO_TBL_CHK);
++ ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
++ UCB_TS_CR_TSMX_GND | UCB_TS_CR_TSPX_POW |
++ UCB_TS_CR_MODE_POS | UCB_TS_CR_BIAS_ENA);
++
++
++ ucb1x00_reg_write(ts->ucb, UCB_ADC_CR, ts->ucb->adc_cr |
++ UCB_ADC_INP_TSPY | UCB_ADC_SYNC_ENA);
++ udelay(100);
++ ucb1x00_reg_write(ts->ucb, UCB_ADC_CR, ts->ucb->adc_cr |
++ UCB_ADC_INP_TSPY | UCB_ADC_SYNC_ENA |
++ UCB_ADC_START);
++}
++
++/*
++ * Switch to Y position mode and measure X plate. We switch the plate
++ * configuration in pressure mode, then switch to position mode. This
++ * gives a faster response time. Even so, we need to wait about 55us
++ * for things to stabilise.
++ */
++static inline void ucb1x00_ts_read_ypos(struct ucb1x00_ts *ts)
++{
++ ucb1x00_io_write(ts->ucb, 0, COLLIE_TC35143_GPIO_TBL_CHK);
++
++ ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
++ UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_POW |
++ UCB_TS_CR_MODE_POS | UCB_TS_CR_BIAS_ENA);
++
++
++ ucb1x00_reg_write(ts->ucb, UCB_ADC_CR, ts->ucb->adc_cr |
++ UCB_ADC_INP_TSPX | UCB_ADC_SYNC_ENA);
++ udelay(100);
++ ucb1x00_reg_write(ts->ucb, UCB_ADC_CR, ts->ucb->adc_cr |
++ UCB_ADC_INP_TSPX | UCB_ADC_SYNC_ENA |
++ UCB_ADC_START);
++}
++
++/*
++ * Switch to X plate resistance mode. Set MX to ground, PX to
++ * supply. Measure current.
++ */
++static inline unsigned int ucb1x00_ts_read_xres(struct ucb1x00_ts *ts)
++{
++ ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
++ UCB_TS_CR_TSMX_GND | UCB_TS_CR_TSPX_POW |
++ UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
++ return ucb1x00_adc_read(ts->ucb, 0, ts->adcsync);
++}
++
++/*
++ * Switch to Y plate resistance mode. Set MY to ground, PY to
++ * supply. Measure current.
++ */
++static inline unsigned int ucb1x00_ts_read_yres(struct ucb1x00_ts *ts)
++{
++ ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
++ UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_POW |
++ UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
++ return ucb1x00_adc_read(ts->ucb, 0, ts->adcsync);
++}
++
++/*
++ * This is a RT kernel thread that handles the ADC accesses
++ * (mainly so we can use semaphores in the UCB1200 core code
++ * to serialise accesses to the ADC).
++ */
++static int ucb1x00_thread(void *_ts)
++{
++ struct ucb1x00_ts *ts = _ts;
++ struct task_struct *tsk = current;
++ DECLARE_WAITQUEUE(wait, tsk);
++ int state;
++
++ /*
++ * We could run as a real-time thread. However, thus far
++ * this doesn't seem to be necessary.
++ */
++
++ add_wait_queue(&ts->irq_wait, &wait);
++
++ while (!kthread_should_stop()) {
++ unsigned int data[3];
++
++ for (state=0; state<3; state++) {
++
++ ucb1x00_adc_enable(ts->ucb);
++ ucb1x00_enable_irq(ts->ucb, UCB_IRQ_ADC, UCB_FALLING);
++ switch (state) {
++ /* Order matters here; last measurement seems to be more noisy then the
++ rest, and we care about pressure least */
++ case 2: ucb1x00_ts_read_pressure(ts);
++ break;
++ case 0: ucb1x00_ts_read_ypos(ts);
++ break;
++ case 1: ucb1x00_ts_read_xpos(ts);
++ break;
++ }
++ /* wait for adc */
++ try_to_freeze();
++ schedule_timeout(1000 * HZ);
++ ucb1x00_disable_irq(ts->ucb, UCB_IRQ_ADC, UCB_FALLING);
++ data[state] = UCB_ADC_DAT(ucb1x00_reg_read(ts->ucb, UCB_ADC_DATA));
++ ucb1x00_adc_disable(ts->ucb);
++ }
++
++ /* If not pressed any more, try to sleep! */
++ if (data[2] < 300) {
++ set_task_state(tsk, TASK_INTERRUPTIBLE);
++ ucb1x00_enable_irq(ts->ucb, UCB_IRQ_TSPX, UCB_RISING);
++ ucb1x00_ts_mode_int(ts);
++ ucb1x00_disable(ts->ucb);
++ ucb1x00_ts_event_release(ts);
++ try_to_freeze();
++ schedule_timeout(1000 * HZ);
++ ucb1x00_disable_irq(ts->ucb, UCB_IRQ_TSPX, UCB_RISING);
++ ucb1x00_enable(ts->ucb);
++ } else {
++ ucb1x00_ts_evt_add(ts, data[2], data[1], data[0]);
++ }
++ ucb1x00_disable(ts->ucb);
++ msleep(20);
++ ucb1x00_enable(ts->ucb);
++ }
++
++ remove_wait_queue(&ts->irq_wait, &wait);
++
++ ts->rtask = NULL;
++ return 0;
++}
++
++/*
++ * We only detect touch screen _touches_ with this interrupt
++ * handler, and even then we just schedule our task.
++ */
++static void ucb1x00_ts_irq(int idx, void *id)
++{
++ struct ucb1x00_ts *ts = id;
++ wake_up(&ts->irq_wait);
++}
++
++static void ucb1x00_adc_irq(int idx, void *id)
++{
++ struct ucb1x00_ts *ts = id;
++ wake_up(&ts->irq_wait);
++}
++
++static int ucb1x00_ts_open(struct input_dev *idev)
++{
++ struct ucb1x00_ts *ts = input_get_drvdata(idev);
++ int ret = 0;
++
++ BUG_ON(ts->rtask);
++
++ init_waitqueue_head(&ts->irq_wait);
++
++ ret = ucb1x00_hook_irq(ts->ucb, UCB_IRQ_TSPX, ucb1x00_ts_irq, ts);
++ if (ret < 0)
++ return ret;
++
++ ret = ucb1x00_hook_irq(ts->ucb, UCB_IRQ_ADC, ucb1x00_adc_irq, ts);
++ if (ret < 0) {
++ ucb1x00_free_irq(ts->ucb, UCB_IRQ_TSPX, ts);
++ return ret;
++ }
++
++ ucb1x00_enable_irq(ts->ucb, UCB_IRQ_TSPX, UCB_RISING);
++
++ /*
++ * If we do this at all, we should allow the user to
++ * measure and read the X and Y resistance at any time.
++ */
++ ucb1x00_adc_enable(ts->ucb);
++ ts->x_res = ucb1x00_ts_read_xres(ts);
++ ts->y_res = ucb1x00_ts_read_yres(ts);
++ ucb1x00_adc_disable(ts->ucb);
++
++ if (machine_is_collie()) {
++ ucb1x00_io_set_dir(ts->ucb, 0, COLLIE_TC35143_GPIO_TBL_CHK);
++ }
++
++ ts->rtask = kthread_run(ucb1x00_thread, ts, "ktsd");
++ if (!IS_ERR(ts->rtask)) {
++ ret = 0;
++ } else {
++ ucb1x00_free_irq(ts->ucb, UCB_IRQ_TSPX, ts);
++ ts->rtask = NULL;
++ ret = -EFAULT;
++ }
++
++ return ret;
++}
++
++/*
++ * Release touchscreen resources. Disable IRQs.
++ */
++static void ucb1x00_ts_close(struct input_dev *idev)
++{
++ struct ucb1x00_ts *ts = input_get_drvdata(idev);
++
++ if (ts->rtask)
++ kthread_stop(ts->rtask);
++
++ ucb1x00_enable(ts->ucb);
++ ucb1x00_free_irq(ts->ucb, UCB_IRQ_TSPX, ts);
++ ucb1x00_free_irq(ts->ucb, UCB_IRQ_ADC, ts);
++ ucb1x00_reg_write(ts->ucb, UCB_TS_CR, 0);
++ ucb1x00_disable(ts->ucb);
++}
++
++#ifdef CONFIG_PM
++static int ucb1x00_ts_resume(struct ucb1x00_dev *dev)
++{
++ struct ucb1x00_ts *ts = dev->priv;
++
++ if (ts->rtask != NULL) {
++ /*
++ * Restart the TS thread to ensure the
++ * TS interrupt mode is set up again
++ * after sleep.
++ */
++ wake_up(&ts->irq_wait);
++ }
++ return 0;
++}
++#else
++#define ucb1x00_ts_resume NULL
++#endif
++
++
++/*
++ * Initialisation.
++ */
++static int ucb1x00_ts_add(struct ucb1x00_dev *dev)
++{
++ struct ucb1x00_ts *ts;
++ struct input_dev *idev;
++ int err;
++
++ ts = kzalloc(sizeof(struct ucb1x00_ts), GFP_KERNEL);
++ idev = input_allocate_device();
++ if (!ts || !idev) {
++ err = -ENOMEM;
++ goto fail;
++ }
++
++ ts->ucb = dev->ucb;
++ ts->idev = idev;
++ ts->adcsync = adcsync ? UCB_SYNC : UCB_NOSYNC;
++
++ input_set_drvdata(idev, ts);
++ idev->name = "Touchscreen panel";
++ idev->id.product = ts->ucb->id;
++ idev->open = ucb1x00_ts_open;
++ idev->close = ucb1x00_ts_close;
++
++ __set_bit(EV_ABS, idev->evbit);
++ __set_bit(ABS_X, idev->absbit);
++ __set_bit(ABS_Y, idev->absbit);
++ __set_bit(ABS_PRESSURE, idev->absbit);
++
++ input_set_abs_params(ts->idev, ABS_X, 0, 450, 0, 0);
++ input_set_abs_params(ts->idev, ABS_Y, 200, 800, 0, 0);
++ input_set_abs_params(ts->idev, ABS_PRESSURE, 400, 800, 0, 0);
++
++
++ err = input_register_device(idev);
++ if (err)
++ goto fail;
++
++ dev->priv = ts;
++
++ return 0;
++
++ fail:
++ input_free_device(idev);
++ kfree(ts);
++ return err;
++}
++
++static void ucb1x00_ts_remove(struct ucb1x00_dev *dev)
++{
++ struct ucb1x00_ts *ts = dev->priv;
++
++ input_unregister_device(ts->idev);
++ kfree(ts);
++}
++
++static struct ucb1x00_driver ucb1x00_ts_driver = {
++ .add = ucb1x00_ts_add,
++ .remove = ucb1x00_ts_remove,
++ .resume = ucb1x00_ts_resume,
++};
++
++static int __init ucb1x00_ts_init(void)
++{
++ return ucb1x00_register_driver(&ucb1x00_ts_driver);
++}
++
++static void __exit ucb1x00_ts_exit(void)
++{
++ ucb1x00_unregister_driver(&ucb1x00_ts_driver);
++}
++
++module_param(adcsync, int, 0444);
++module_init(ucb1x00_ts_init);
++module_exit(ucb1x00_ts_exit);
++
++MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
++MODULE_DESCRIPTION("UCB1x00 touchscreen driver");
++MODULE_LICENSE("GPL");
+diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
+index 4981aff..7bbba6e 100644
+--- a/drivers/mfd/Makefile
++++ b/drivers/mfd/Makefile
+@@ -24,7 +24,6 @@ obj-$(CONFIG_MFD_CORE) += mfd-core.o
+ obj-$(CONFIG_MCP) += mcp-core.o
+ obj-$(CONFIG_MCP_SA11X0) += mcp-sa11x0.o
+ obj-$(CONFIG_MCP_UCB1200) += ucb1x00-core.o
+-
+ ifeq ($(CONFIG_SA1100_ASSABET),y)
+ obj-$(CONFIG_MCP_UCB1200) += ucb1x00-assabet.o
+ endif
+diff --git a/include/linux/mfd/ucb1x00.h b/include/linux/mfd/ucb1x00.h
+index eac3463..70eb763 100644
+--- a/include/linux/mfd/ucb1x00.h
++++ b/include/linux/mfd/ucb1x00.h
+@@ -35,7 +35,10 @@
+ #define UCB_IE_TCLIP (1 << 14)
+ #define UCB_IE_ACLIP (1 << 15)
+
++/* UCB1200 irqs */
++#define UCB_IRQ_ADC 11
+ #define UCB_IRQ_TSPX 12
++#define UCB_IRQ_TSMX 13
+
+ #define UCB_TC_A 0x05
+ #define UCB_TC_A_LOOP (1 << 7) /* UCB1200 */
+--
+1.5.6.5
+
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-09-27 06:47:42 +0000