/*
- * MX1 touchscreen driver
+ * MX1 touchscreen driver
*
- * Author: Nicolas Pitre
- * Created: September 25, 2006
- * Copyright: MontaVista Software, Inc.
+ * Copyright (C) 2008
+ * Radek Pupak (pupakr1@fel.cvut.cz)
+ * Czech Technical University, FEE, DCE
*
* 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.
*
- * This code is heavily based on ucb1x00-*.c copyrighted by Russell King
- * covering the UCB1100, UCB1200 and UCB1300.. Support for the UCB1400 has
- * been made separate from ucb1x00-core/ucb1x00-ts on Russell's request.
+ * This code is heavily based on ucb*.c copyrighted by Russell King
+ * and Nicolas Pitre covering the UCB1100, UCB1200, UCB1300 and UCB1400.
+ *
+ * Hardware specific properties are based on mx1ts.h and mx1ts.c copyrated
+ * by Blue Mug, Inc. for Motorola, Inc.
+ *
*/
+
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
u16 cal_range_y;
unsigned int stav;
u8 auto_calibration;
+ u8 is_open;
};
-
-struct mx1ts mx1_ts;
+static int MX1TS_lastx = 0;
+static int MX1TS_lasty = 0;
static inline void mx1ts_reg_set_mask(struct mx1ts *mts , unsigned int reg, u32 mask)
{
static inline void mx1ts_reg_write(struct mx1ts *mts, unsigned int reg, unsigned int val)
{
__raw_writel(val, mts->mx1ts_mem+reg);
- printk("mx1_touchscreen: zapisuji do : %p hodnotu %x\n",mts->mx1ts_mem+reg, val);
+ printk(KERN_DEBUG "mx1_touchscreen: writing into : %p value %x\n",mts->mx1ts_mem+reg, val);
}
unsigned int out;
out = __raw_readl( mts->mx1ts_mem + reg );
- /*printk("mx1_touchscreen: ctu z %p : %d \n",mts->mx1ts_mem + reg, out);*/
+ /*printk(KERN_DEBUG "mx1_touchscreen: reading from %p : %d \n",mts->mx1ts_mem + reg, out);*/
return out;
}
/* Enable pen touch interrupt. */
value = mx1ts_reg_read(mts, ASP_ICNTLR);
- value |= ASP_EDGE | ASP_PIRQE;
+ value |= ASP_EDGE | /*ASP_POL |*/ ASP_PIRQE;
mx1ts_reg_write(mts, ASP_ICNTLR, value);
+
+ printk(KERN_DEBUG "mx1_touchscreen: pen_touch: activating pen_down interrupt \n");
}
static void mx1ts_disable_pen_touch_interrupt(struct mx1ts *mts)
value = mx1ts_reg_read(mts, ASP_ICNTLR);
value &= ~ASP_PIRQE;
mx1ts_reg_write(mts, ASP_ICNTLR, value);
+ printk(KERN_DEBUG "mx1_touchscreen: pen_touch: deaktivating pen_down interrupt \n");
}
static void mx1ts_enable_pen_up_interrupt(struct mx1ts *mts)
{
unsigned int value;
- /* Enable pen up interrupt. XXX: This feature is undocumented. */
value = mx1ts_reg_read(mts, ASP_ICNTLR);
- value |= ASP_PUIE;
+ value |= ASP_PUIE;
mx1ts_reg_write(mts, ASP_ICNTLR, value);
+ printk(KERN_DEBUG "mx1_touchscreen: pen_up: activating pen_up interrupt \n");
}
static void mx1ts_disable_pen_up_interrupt(struct mx1ts *mts)
value = mx1ts_reg_read(mts, ASP_ICNTLR);
value &= ~ASP_PUIE;
mx1ts_reg_write(mts, ASP_ICNTLR, value);
+ printk(KERN_DEBUG "mx1_touchscreen: pen_up: deaktivating pen_up interrupt \n");
}
static void mx1ts_start_auto_calibration(struct mx1ts *mts)
{
unsigned int value;
+ printk(KERN_DEBUG "mx1_touchscreen: start_auto_calibration \n");
+
mts->auto_calibration = 1;
value = ASP_CLKEN | ASP_NM | ASP_SW6 | ASP_BGE;
mx1ts_reg_write(mts, ASP_ACNTLCR, value);
- /* Set the clock divide ratio to 2. */
- mx1ts_reg_write(mts, ASP_CLKDIV, 0x01);
+ /* 0x01 Set the clock divide ratio to 2. */
+ mx1ts_reg_write(mts, ASP_CLKDIV, 0x1f);
/* Set the sample rate control register. These values should yield
* about 150 samples per second, which seems to give good smooth
* lines. */
- value = (0x2 << ASP_DMCNT_SCALE) | /* Decimation ratio is 3 */
- (0x1 << ASP_IDLECNT_SCALE) | /* Idle count is 1 clock */
- (0x2 << ASP_DSCNT_SCALE); /* Data setup is 2 clocks */
+ value = (0x7 << ASP_DMCNT_SCALE) | /* 0x2 - Decimation ratio is 3 */
+ (0x3F << ASP_IDLECNT_SCALE) | /* 0x1 - Idle count is 1 clock */
+ (0xF << ASP_DSCNT_SCALE); /* 0x2 - Data setup is 2 clocks */
mx1ts_reg_write(mts, ASP_PSMPLRG, value);
/* Disable the compare function. */
mx1ts_reg_write(mts, ASP_CMPCNTL, 0);
}
-static void mx1ts_evt_add(struct input_dev *idev, u8 p , u16 x, u16 y)
+static void mx1ts_evt_add_touch(struct input_dev *idev, u8 p , u16 x, u16 y)
{
- input_report_key(idev, BTN_TOUCH, p);
+ input_report_key(idev, BTN_TOUCH, 1);
input_report_abs(idev, ABS_X, x);
input_report_abs(idev, ABS_Y, y);
- /* input_report_abs(idev, ABS_PRESSURE, pressure);*/
- printk(KERN_ERR "P %i X %i Y %i.\n", p, x, y);
+ /*input_report_abs(idev, ABS_PRESSURE, p);*/
+ input_report_abs(idev, ABS_PRESSURE, 1);
+ MX1TS_lastx = x;
+ MX1TS_lasty = y;
+ input_sync(idev);
+}
+
+static void mx1ts_evt_add_up(struct input_dev *idev)
+{
+ input_report_abs(idev, ABS_X, MX1TS_lastx);
+ input_report_abs(idev, ABS_Y, MX1TS_lasty);
+ input_report_abs(idev, ABS_PRESSURE, 0);
+ /*input_report_key(idev, BTN_TOUCH, 0);*/
input_sync(idev);
}
* Handle the pen data ready interrupt, generated when pen data is
* in the FIFO.
*/
-/*static irqreturn_t mx1ts_pendata_irq(int irq, void *dev_id)*/
-static irqreturn_t mx1ts_pendata_irq(int irq, struct mx1ts *mts)
+
+static irqreturn_t mx1ts_pendata_irq(int irq, void *dev_id)
{
+
+ struct mx1ts *mts = (struct mx1ts *)dev_id;
u16 mx1_cal_range_x;
u16 mx1_cal_range_y;
static unsigned int auto_zero, pen_x, pen_y, pen_u;
- /*struct mx1ts *mts = (struct mx1_ts *) dev_id;*/
-
mx1_cal_range_x = 1;
mx1_cal_range_y = 1;
-
-/* printk("<1> mx1_touchscreen: mx1_pendata_irq interrupt recived from struct %p\n", mts);*/
+
+ /*printk(KERN_DEBUG "mx1_touchscreen mx1ts_pendata_irq \n");*/
+/* printk(KERN_DEBUG "mx1_touchscreen: mx1_pendata_irq interrupt recived from struct %p\n", mts);*/
- if (mx1ts_reg_read(mts, ASP_ISTATR) & ASP_PUIS) {
- mx1ts_reg_set_mask(mts, ASP_ISTATR, ASP_PUIS);
+ if (mx1ts_reg_read(mts, ASP_ISTATR) & ASP_PUIS) { /*pen up interupt pending*/
+ mx1ts_reg_set_mask(mts, ASP_ISTATR, ASP_PUIS); /*clearing pen up interupt*/
- mx1ts_disable_auto_sample(mts);
+ mx1ts_disable_auto_sample(mts);
mx1ts_disable_pen_up_interrupt(mts);
mx1ts_enable_pen_touch_interrupt(mts);
- mx1ts_evt_add(mts, 0, 0, 0);
- printk(KERN_ERR "Zaplnena fifo.\n");
+ if(mts->is_open) /*report last known touch*/
+ mx1ts_evt_add_up(mts->ts_idev);
+ printk(KERN_DEBUG "Pen up interrupt.\n");
mx1ts_flush_fifo(mts);
return IRQ_HANDLED;
}
if (mts->auto_calibration) {
- unsigned int value;
+/* unsigned int value;*/
mts->cal_auto_zero = mx1ts_reg_read(mts, ASP_PADFIFO) & 0xFFFF;
mts->cal_range_x = mx1ts_reg_read(mts, ASP_PADFIFO) & 0xFFFF;
if ((mts->cal_auto_zero >= mts->cal_range_x) ||
(mts->cal_auto_zero >= mts->cal_range_y)) {
// Invalid data.
- printk(KERN_ERR "Invalid data.\n");
+ printk(KERN_INFO "Invalid calibration data. Recalibrating. \n");
+ mx1ts_flush_fifo(mts); /*if there are some older data*/
mx1ts_start_auto_calibration(mts);
- return IRQ_NONE; /* return IRQ_HANDLED; */
+ return IRQ_HANDLED; /*return IRQ_NONE;*/
}
+ printk(KERN_DEBUG "mx1 touchscreen: calibration cal_auto_zero %i.\n",mts->cal_auto_zero);
+ printk(KERN_DEBUG "mx1 touchscreen: calibration cal_range_x %i.\n",mts->cal_range_x);
+ printk(KERN_DEBUG "mx1 touchscreen: calibration cal_range_y %i.\n",mts->cal_range_y);
mts->cal_range_x -= mts->cal_auto_zero;
mts->cal_range_y -= mts->cal_auto_zero;
- printk(KERN_ERR "Kalibrace cal_auto_zero %i.\n",mts->cal_auto_zero);
- printk(KERN_ERR "Kalibrace cal_range_x %i.\n",mts->cal_range_x);
- printk(KERN_ERR "Kalibrace cal_range_y %i.\n",mts->cal_range_y);
- value = mx1ts_reg_read(mts, ASP_ACNTLCR);
- value &= ~0x04000000; // Undocumented.
+ /*
+ value = mx1ts_reg_read(mts, ASP_ACNTLCR); podle me duplicita
+ value &= ~0x04000000;
mx1ts_reg_write(mts, ASP_ACNTLCR, value);
-
+ */
mts->auto_calibration = 0;
mx1ts_enable_auto_sample(mts);
// generated as long as there is data in the FIFO.
if ((mx1ts_reg_read(mts, ASP_ISTATR) & ASP_PDR) != ASP_PDR) {
- return IRQ_NONE; /* TODO je to tak? */
+ return IRQ_NONE;
}
auto_zero = mx1ts_reg_read(mts, ASP_PADFIFO);
pen_y = (u32)(((pen_y - auto_zero) << 16) /
mts->cal_range_y);
- mx1ts_evt_add(mts, 1, pen_x, pen_y);
+ if(mts->is_open)
+ mx1ts_evt_add_touch(mts->ts_idev, 200 , pen_x, pen_y);
}
return IRQ_HANDLED;
}
-/* static void mx1ts_pokus_zapnout(struct mx1ts *mts) {
- mx1ts_reg_write(mts, ASP_CLKDIV, 0x1F); //clok divide register
- mx1ts_reg_write(mts, ASP_ICNTLR , ASP_PUIE | ASP_PDRE | ASP_PFFE | ASP_EDGE | ASP_PIRQE); //interupt control register //0X00000833
- mx1ts_reg_write(mts, ASP_PSMPLRG, 0x0000487F); //pen a/d sample rate control register
- mx1ts_reg_write(mts,ASP_ACNTLCR, ASP_CLKEN | ASP_AZE | ASP_AUTO | (10<<12) | 3); //control register
-
-} */
-
-static void mx1ts_enable_pen_up_irq(struct mx1ts *mts)
-{
- unsigned int value;
- printk(KERN_ERR "Pen up irq.\n");
-
- value = mx1ts_reg_read(mts, ASP_ICNTLR);
- value |= ASP_PUIE;
- mx1ts_reg_write(mts, ASP_ICNTLR, value);
-}
-
/*
* Handle the touch interrupt, generated when the pen is pressed/
* released.
{
struct mx1ts *mts = (struct mx1ts *) dev_id;
- printk(KERN_ERR "Prijat touch irq \n");
+ printk(KERN_ERR "mx1 touchscreen: Touch down interrupt \n");
/* Clear the interrupt. */
mx1ts_reg_set_mask(mts, ASP_ISTATR, ASP_PEN);
mx1ts_disable_pen_touch_interrupt(mts);
+ mx1ts_flush_fifo(mts);
mx1ts_start_auto_calibration(mts);
mx1ts_enable_pen_up_interrupt(mts);
static inline int mx1ts_enable_irqs(struct mx1ts *mts) //zaregistruje preruseni
{
int result;
+//TODO printk(KERN_ERR "enabling irq %d.\n",mts->ts_idev->dev.parent.resource[1]->start);
result = request_irq(ASP_PENDATA_IRQ,
mx1ts_pendata_irq,
- /*IRQF_*/ 0,
+ 0,
DEV_IRQ_ID,
mts);
if (result) {
- printk(KERN_ERR "Couldn't request pen data IRQ.\n");
+ printk(KERN_ERR "mx1 touchscreen: Couldn't request pen data IRQ.\n");
return result;
}
DEV_IRQ_ID,
mts);
if (result) {
- printk(KERN_ERR "Couldn't request pen touch IRQ.\n");
+ printk(KERN_ERR "mx1 touchscreen: Couldn't request pen touch IRQ.\n");
free_irq(ASP_PENDATA_IRQ, mts);
return result;
}
-static int mx1ts_on(struct mx1ts *mts)
+static int mx1ts_on(struct mx1ts *mts) /*TODO doplnit pri chybach*/
{
int ret = 0;
if(!request_mem_region(ASP_BASE_ADDR, 0x38 , "mx1ts")) {
- printk(KERN_ERR "mx1ts: request_mem_region \tFAILED\n");
+ printk(KERN_ERR "mx1 touchscreen: request_mem_region \tFAILED\n");
return -1;
}
- printk("<1>mx1ts: request_mem_region \tOK\n");
+ printk(KERN_DEBUG "mx1 touchscreen: request_mem_region \tOK\n");
mts->mx1ts_mem = ioremap ( ASP_BASE_ADDR, 0x38);
- printk("<1>mx1ts: memory remaped on %p \n", mts->mx1ts_mem);
+ if(!mts->mx1ts_mem) {
+ printk(KERN_ERR "mx1 touchscreen: ioremap \tFAILED\n");
+ return -1;
+ }
+
+ printk(KERN_DEBUG "mx1 touchscreen: memory remaped on %p \n", mts->mx1ts_mem);
- printk("<1>mx1ts: enabling irqs\n");
+ /*printk(KERN_DEBUG "mx1 touchscreen: enabling irqs\n");*/
if ((ret = mx1ts_enable_irqs(mts)))
return ret;
- printk("<1>mx1ts: irqs enabled \tOK\n");
+ printk(KERN_DEBUG "mx1 touchscreen: irqs enabled \tOK\n");
mx1ts_reset_asp(mts);
- printk("<1>mx1ts: reset\tOK\n");
+ printk(KERN_DEBUG "mx1 touchscreen: reset\tOK\n");
- mx1ts_enable_pen_touch_interrupt(mts);
- printk("<1>mx1ts: zapnuti touch interrupt\n");
return 0;
}
-static int mx1ts_close(struct platform_device *dev)
+static void mx1ts_close(struct input_dev *idev)
{
- return 0;
+ struct mx1ts *mts = dev_get_drvdata(idev->dev.parent);
+ mts->is_open = 0;
+ mx1ts_flush_fifo(mts);
+ mx1ts_reset_asp(mts);
+ printk(KERN_DEBUG "mx1 touchscreen: reset\tOK\n");
+ mx1ts_disable_pen_touch_interrupt(mts);
+ mx1ts_disable_pen_up_interrupt(mts);
+
}
-static int mx1ts_open(struct platform_device *dev)
+static int mx1ts_open(struct input_dev *idev)
{
+ struct mx1ts *mts = dev_get_drvdata(idev->dev.parent);
+ mts->is_open = 1;
+ mx1ts_flush_fifo(mts); /*if there are some older data*/
+ mx1ts_enable_pen_touch_interrupt(mts);
+ printk(KERN_DEBUG "mx1 touchscreen: touch_down interupt enabled\n");
return 0;
}
static int mx1ts_probe(struct platform_device *dev)
{
-
- //struct mx1ts *mts= &mx1_ts;
- struct mx1ts *mts;
+ struct mx1ts *mts;
struct input_dev *idev;
- int error, id, x_res, y_res;
+ int error, x_res, y_res;
-// mx1ts_disable_pen_touch_interrupt();
-// mx1ts_start_auto_calibration();
-// mx1ts_enable_pen_up_interrupt();
+ /* TODO jak poznat ze zarizeni je pritomne ? */
- mts = kzalloc(sizeof(struct mx1ts), GFP_KERNEL); //alokuje pamet
- idev = input_allocate_device();
+ mts = kzalloc(sizeof(struct mx1ts), GFP_KERNEL); /* alokuje pamet */
+ idev = input_allocate_device();
if (!mts || !idev) {
error = -ENOMEM;
+ printk(KERN_ERR "mx1 touchscreen: failed allocate memory for struct mx1ts or idev\n");
goto err_free_devs;
- return error; //XXX
+ return error;
}
- mx1_ts = *mts;
-
-
- mx1ts_on(mts);
- return 0;
+ mx1ts_on(mts); /* remaping registers, reseting device */
mts->ts_idev = idev;
- //ucb->adcsync = adcsync;
- //ucb->ac97 = to_ac97_t(dev);
init_waitqueue_head(&mts->ts_wait);
-/* id = mx1ts_reg_read(ucb, UCB_ID);
- if (id != UCB_ID_1400) {
- error = -ENODEV;
- goto err_free_devs;
- }
-
- error = mx1ts_detect_irq(ucb);
- if (error) {
- printk(KERN_ERR "UCB1400: IRQ probe failed\n");
- goto err_free_devs;
- }
-
- error = request_irq(ucb->irq, mx1ts_hard_irq, IRQF_TRIGGER_RISING,
- "UCB1400", ucb);
- if (error) {
- printk(KERN_ERR "mx1ts: unable to grab irq%d: %d\n",
- ucb->irq, error);
- goto err_free_devs;
- }
- printk(KERN_DEBUG "UCB1400: found IRQ %d\n", ucb->irq);*/
-
-// input_set_drvdata(idev, mx1_ts);
+ //input_set_drvdata(idev, mts); /*moznost ulozit ukazatel na trukturu do input_driver*/
+ platform_set_drvdata(dev, mts);
idev->dev.parent = &dev->dev;
idev->name = "MX1 touchscreen interface";
- idev->id.vendor = (unsigned int) 345;//mx1ts_reg_read(mx1_ts, AC97_VENDOR_ID1);
- idev->id.product = id;
+ idev->phys = "mx1ts/input0"; //dodano
+ idev->id.vendor = (unsigned int) 345; /*mx1ts_reg_read(mx1_ts, AC97_VENDOR_ID1);*/
+ idev->id.product = (unsigned int) 354; /*id;*/
+ idev->id.version = 0x0100; //dodano
+ idev->id.bustype = BUS_HOST;
idev->open = mx1ts_open;
idev->close = mx1ts_close;
idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
idev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
- //idev->bustype = BUS_HOST;
-
- printk("<1> mx1ts: setting idev struct \tOK\t");
+ printk(KERN_DEBUG "mx1ts: setting idev struct \tOK\n");
-/* mx1ts_adc_enable(ucb);
- x_res = mx1ts_read_xres(ucb);
- y_res = mx1ts_read_yres(ucb);
- mx1ts_adc_disable(ucb);
- printk(KERN_DEBUG "UCB1400: x/y = %d/%d\n", x_res, y_res);*/
+ x_res = 60000; /*TODO neni mozne zmerit ? */
+ y_res = 60000;
+ printk(KERN_DEBUG "mx1ts: x/y = %d/%d\n", x_res, y_res);
input_set_abs_params(idev, ABS_X, 0, x_res, 0, 0);
input_set_abs_params(idev, ABS_Y, 0, y_res, 0, 0);
- input_set_abs_params(idev, ABS_PRESSURE, 0, 0, 0, 0);
+ input_set_abs_params(idev, ABS_PRESSURE, 0, 1, 0, 0);
+
+ error = input_register_device(idev);
+ if (error) {
+ printk(KERN_ERR "mx1 touchscreen: error while register input device\n");
+ goto err_free_devs;
+ }
-// error = input_register_device(idev);
-// if (error)
-// goto err_free_irq;
+ printk(KERN_DEBUG "mx1ts: input device registered \tOK\n");
-// dev_set_drvdata(dev, ucb);
return 0;
-// err_free_irq:
-// free_irq(ucb->irq, ucb);
- err_free_devs:
- printk("<1> mx1ts: chyba pri nastavovani irq \n");
- input_free_device(idev);
+ err_free_devs:
+ printk(KERN_ERR "mx1 touchscreen: error in device probe \n");
+ /*input_free_device(idev);*/
kfree(mts);
return error;
-
static int mx1ts_remove(struct platform_device *dev)
{
- struct mx1_ts *mts = &mx1_ts;
+ struct mx1ts *mts = platform_get_drvdata(dev);
+
+ //BUG_ON(mts == NULL);
- release_mem_region(ASP_BASE_ADDR, 0x40);
- iounmap(mx1_ts.mx1ts_mem);
free_irq(ASP_PENDATA_IRQ, mts);
free_irq(ASP_TOUCH_IRQ, mts);
- //input_free_device(mts->ts_idev);
+ /*input_free_device(mts->ts_idev);
+ printk(KERN_DEBUG "Free device \tOK\n");*/
+
+ input_unregister_device(mts->ts_idev);
+ printk(KERN_INFO "mx1 touchscreen: Unregister device \tOK\n");
+ iounmap(mts->mx1ts_mem);
+ release_mem_region(ASP_BASE_ADDR, 0x38);
+
kfree(mts);
- printk("<1> Removing driver \tOK\n");
+ printk(KERN_INFO "mx1 touchscreen: Removing driver \tOK\n");
return 0;
}
},
};
+void mx1ts_device_release(struct device *dev) {
+ /*struct platform_device *pdev = to_platform_device(dev);
+ release_resource(&dev->res);
+ kfree(pdev);
+ }*/
+}
+
static struct platform_device mx1ts_device = {
.name = "mx1ts",
.id = 0,
.num_resources = ARRAY_SIZE(mx1ts_resources),
.resource = mx1ts_resources,
+ .dev = {
+ .release = mx1ts_device_release,
+ },
};
int error;
error = platform_device_register(&mx1ts_device);
if(error) {
- printk(KERN_ERR "PiMX1_touchsceen: device registration failed\n");
+ printk(KERN_ERR "mx1 touchscreen: device registration failed\n");
return error;
}
projects / mx1ts.git / blobdiff