* Created: September 25, 2006
* Copyright: MontaVista Software, Inc.
*
+ * Spliting done by: Marek Vasut <marek.vasut@gmail.com>
+ * If something doesnt work and it worked before spliting, e-mail me,
+ * dont bother Nicolas please ;-)
+ *
* 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.
#include <linux/slab.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
-
-#include <sound/core.h>
-#include <sound/ac97_codec.h>
-
-
-/*
- * Interesting UCB1400 AC-link registers
- */
-
-#define UCB_IE_RIS 0x5e
-#define UCB_IE_FAL 0x60
-#define UCB_IE_STATUS 0x62
-#define UCB_IE_CLEAR 0x62
-#define UCB_IE_ADC (1 << 11)
-#define UCB_IE_TSPX (1 << 12)
-
-#define UCB_TS_CR 0x64
-#define UCB_TS_CR_TSMX_POW (1 << 0)
-#define UCB_TS_CR_TSPX_POW (1 << 1)
-#define UCB_TS_CR_TSMY_POW (1 << 2)
-#define UCB_TS_CR_TSPY_POW (1 << 3)
-#define UCB_TS_CR_TSMX_GND (1 << 4)
-#define UCB_TS_CR_TSPX_GND (1 << 5)
-#define UCB_TS_CR_TSMY_GND (1 << 6)
-#define UCB_TS_CR_TSPY_GND (1 << 7)
-#define UCB_TS_CR_MODE_INT (0 << 8)
-#define UCB_TS_CR_MODE_PRES (1 << 8)
-#define UCB_TS_CR_MODE_POS (2 << 8)
-#define UCB_TS_CR_BIAS_ENA (1 << 11)
-#define UCB_TS_CR_TSPX_LOW (1 << 12)
-#define UCB_TS_CR_TSMX_LOW (1 << 13)
-
-#define UCB_ADC_CR 0x66
-#define UCB_ADC_SYNC_ENA (1 << 0)
-#define UCB_ADC_VREFBYP_CON (1 << 1)
-#define UCB_ADC_INP_TSPX (0 << 2)
-#define UCB_ADC_INP_TSMX (1 << 2)
-#define UCB_ADC_INP_TSPY (2 << 2)
-#define UCB_ADC_INP_TSMY (3 << 2)
-#define UCB_ADC_INP_AD0 (4 << 2)
-#define UCB_ADC_INP_AD1 (5 << 2)
-#define UCB_ADC_INP_AD2 (6 << 2)
-#define UCB_ADC_INP_AD3 (7 << 2)
-#define UCB_ADC_EXT_REF (1 << 5)
-#define UCB_ADC_START (1 << 7)
-#define UCB_ADC_ENA (1 << 15)
-
-#define UCB_ADC_DATA 0x68
-#define UCB_ADC_DAT_VALID (1 << 15)
-#define UCB_ADC_DAT_VALUE(x) ((x) & 0x3ff)
-
-#define UCB_ID 0x7e
-#define UCB_ID_1400 0x4304
-
-
-struct ucb1400 {
- struct snd_ac97 *ac97;
- struct input_dev *ts_idev;
-
- int irq;
-
- wait_queue_head_t ts_wait;
- struct task_struct *ts_task;
-
- unsigned int irq_pending; /* not bit field shared */
- unsigned int ts_restart:1;
- unsigned int adcsync:1;
-};
+#include <linux/ucb1400.h>
static int adcsync;
static int ts_delay = 55; /* us */
static int ts_delay_pressure; /* us */
-static inline u16 ucb1400_reg_read(struct ucb1400 *ucb, u16 reg)
-{
- return ucb->ac97->bus->ops->read(ucb->ac97, reg);
-}
-
-static inline void ucb1400_reg_write(struct ucb1400 *ucb, u16 reg, u16 val)
-{
- ucb->ac97->bus->ops->write(ucb->ac97, reg, val);
-}
-
-static inline void ucb1400_adc_enable(struct ucb1400 *ucb)
-{
- ucb1400_reg_write(ucb, UCB_ADC_CR, UCB_ADC_ENA);
-}
-
-static unsigned int ucb1400_adc_read(struct ucb1400 *ucb, u16 adc_channel)
-{
- unsigned int val;
-
- if (ucb->adcsync)
- adc_channel |= UCB_ADC_SYNC_ENA;
-
- ucb1400_reg_write(ucb, UCB_ADC_CR, UCB_ADC_ENA | adc_channel);
- ucb1400_reg_write(ucb, UCB_ADC_CR, UCB_ADC_ENA | adc_channel | UCB_ADC_START);
-
- for (;;) {
- val = ucb1400_reg_read(ucb, UCB_ADC_DATA);
- if (val & UCB_ADC_DAT_VALID)
- break;
- /* yield to other processes */
- schedule_timeout_uninterruptible(1);
- }
-
- return UCB_ADC_DAT_VALUE(val);
-}
-
-static inline void ucb1400_adc_disable(struct ucb1400 *ucb)
-{
- ucb1400_reg_write(ucb, UCB_ADC_CR, 0);
-}
-
/* Switch to interrupt mode. */
-static inline void ucb1400_ts_mode_int(struct ucb1400 *ucb)
+static inline void ucb1400_ts_mode_int(struct snd_ac97 *ac97)
{
- ucb1400_reg_write(ucb, UCB_TS_CR,
+ ucb1400_reg_write(ac97, 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.
*/
-static inline unsigned int ucb1400_ts_read_pressure(struct ucb1400 *ucb)
+static inline unsigned int ucb1400_ts_read_pressure(struct ucb1400_ts *ucb)
{
- ucb1400_reg_write(ucb, UCB_TS_CR,
+ ucb1400_reg_write(ucb->ac97, 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_PRES | UCB_TS_CR_BIAS_ENA);
udelay(ts_delay_pressure);
- return ucb1400_adc_read(ucb, UCB_ADC_INP_TSPY);
+ return ucb1400_adc_read(ucb->ac97, UCB_ADC_INP_TSPY, adcsync);
}
/*
* gives a faster response time. Even so, we need to wait about 55us
* for things to stabilise.
*/
-static inline unsigned int ucb1400_ts_read_xpos(struct ucb1400 *ucb)
+static inline unsigned int ucb1400_ts_read_xpos(struct ucb1400_ts *ucb)
{
- ucb1400_reg_write(ucb, UCB_TS_CR,
+ ucb1400_reg_write(ucb->ac97, UCB_TS_CR,
UCB_TS_CR_TSMX_GND | UCB_TS_CR_TSPX_POW |
UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
- ucb1400_reg_write(ucb, UCB_TS_CR,
+ ucb1400_reg_write(ucb->ac97, UCB_TS_CR,
UCB_TS_CR_TSMX_GND | UCB_TS_CR_TSPX_POW |
UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
- ucb1400_reg_write(ucb, UCB_TS_CR,
+ ucb1400_reg_write(ucb->ac97, UCB_TS_CR,
UCB_TS_CR_TSMX_GND | UCB_TS_CR_TSPX_POW |
UCB_TS_CR_MODE_POS | UCB_TS_CR_BIAS_ENA);
udelay(ts_delay);
- return ucb1400_adc_read(ucb, UCB_ADC_INP_TSPY);
+ return ucb1400_adc_read(ucb->ac97, UCB_ADC_INP_TSPY, adcsync);
}
/*
* gives a faster response time. Even so, we need to wait about 55us
* for things to stabilise.
*/
-static inline unsigned int ucb1400_ts_read_ypos(struct ucb1400 *ucb)
+static inline unsigned int ucb1400_ts_read_ypos(struct ucb1400_ts *ucb)
{
- ucb1400_reg_write(ucb, UCB_TS_CR,
+ ucb1400_reg_write(ucb->ac97, UCB_TS_CR,
UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_POW |
UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
- ucb1400_reg_write(ucb, UCB_TS_CR,
+ ucb1400_reg_write(ucb->ac97, UCB_TS_CR,
UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_POW |
UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
- ucb1400_reg_write(ucb, UCB_TS_CR,
+ ucb1400_reg_write(ucb->ac97, UCB_TS_CR,
UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_POW |
UCB_TS_CR_MODE_POS | UCB_TS_CR_BIAS_ENA);
udelay(ts_delay);
- return ucb1400_adc_read(ucb, UCB_ADC_INP_TSPX);
+ return ucb1400_adc_read(ucb->ac97, UCB_ADC_INP_TSPX, adcsync);
}
/*
* Switch to X plate resistance mode. Set MX to ground, PX to
* supply. Measure current.
*/
-static inline unsigned int ucb1400_ts_read_xres(struct ucb1400 *ucb)
+static inline unsigned int ucb1400_ts_read_xres(struct ucb1400_ts *ucb)
{
- ucb1400_reg_write(ucb, UCB_TS_CR,
+ ucb1400_reg_write(ucb->ac97, UCB_TS_CR,
UCB_TS_CR_TSMX_GND | UCB_TS_CR_TSPX_POW |
UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
- return ucb1400_adc_read(ucb, 0);
+ return ucb1400_adc_read(ucb->ac97, 0, adcsync);
}
/*
* Switch to Y plate resistance mode. Set MY to ground, PY to
* supply. Measure current.
*/
-static inline unsigned int ucb1400_ts_read_yres(struct ucb1400 *ucb)
+static inline unsigned int ucb1400_ts_read_yres(struct ucb1400_ts *ucb)
{
- ucb1400_reg_write(ucb, UCB_TS_CR,
+ ucb1400_reg_write(ucb->ac97, UCB_TS_CR,
UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_POW |
UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
- return ucb1400_adc_read(ucb, 0);
+ return ucb1400_adc_read(ucb->ac97, 0, adcsync);
}
-static inline int ucb1400_ts_pen_down(struct ucb1400 *ucb)
+static inline int ucb1400_ts_pen_down(struct snd_ac97 *ac97)
{
- unsigned short val = ucb1400_reg_read(ucb, UCB_TS_CR);
- return (val & (UCB_TS_CR_TSPX_LOW | UCB_TS_CR_TSMX_LOW));
+ unsigned short val = ucb1400_reg_read(ac97, UCB_TS_CR);
+ return val & (UCB_TS_CR_TSPX_LOW | UCB_TS_CR_TSMX_LOW);
}
-static inline void ucb1400_ts_irq_enable(struct ucb1400 *ucb)
+static inline void ucb1400_ts_irq_enable(struct snd_ac97 *ac97)
{
- ucb1400_reg_write(ucb, UCB_IE_CLEAR, UCB_IE_TSPX);
- ucb1400_reg_write(ucb, UCB_IE_CLEAR, 0);
- ucb1400_reg_write(ucb, UCB_IE_FAL, UCB_IE_TSPX);
+ ucb1400_reg_write(ac97, UCB_IE_CLEAR, UCB_IE_TSPX);
+ ucb1400_reg_write(ac97, UCB_IE_CLEAR, 0);
+ ucb1400_reg_write(ac97, UCB_IE_FAL, UCB_IE_TSPX);
}
-static inline void ucb1400_ts_irq_disable(struct ucb1400 *ucb)
+static inline void ucb1400_ts_irq_disable(struct snd_ac97 *ac97)
{
- ucb1400_reg_write(ucb, UCB_IE_FAL, 0);
+ ucb1400_reg_write(ac97, UCB_IE_FAL, 0);
}
static void ucb1400_ts_evt_add(struct input_dev *idev, u16 pressure, u16 x, u16 y)
input_sync(idev);
}
-static void ucb1400_handle_pending_irq(struct ucb1400 *ucb)
+static void ucb1400_handle_pending_irq(struct ucb1400_ts *ucb)
{
unsigned int isr;
- isr = ucb1400_reg_read(ucb, UCB_IE_STATUS);
- ucb1400_reg_write(ucb, UCB_IE_CLEAR, isr);
- ucb1400_reg_write(ucb, UCB_IE_CLEAR, 0);
+ isr = ucb1400_reg_read(ucb->ac97, UCB_IE_STATUS);
+ ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, isr);
+ ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0);
- if (isr & UCB_IE_TSPX)
- ucb1400_ts_irq_disable(ucb);
- else
+ if (isr & UCB_IE_TSPX) {
+ ucb1400_ts_irq_disable(ucb->ac97);
+ enable_irq(ucb->irq);
+ } else
printk(KERN_ERR "ucb1400: unexpected IE_STATUS = %#x\n", isr);
-
- enable_irq(ucb->irq);
}
static int ucb1400_ts_thread(void *_ucb)
{
- struct ucb1400 *ucb = _ucb;
+ struct ucb1400_ts *ucb = _ucb;
struct task_struct *tsk = current;
int valid = 0;
struct sched_param param = { .sched_priority = 1 };
ucb1400_handle_pending_irq(ucb);
}
- ucb1400_adc_enable(ucb);
+ ucb1400_adc_enable(ucb->ac97);
x = ucb1400_ts_read_xpos(ucb);
y = ucb1400_ts_read_ypos(ucb);
p = ucb1400_ts_read_pressure(ucb);
- ucb1400_adc_disable(ucb);
+ ucb1400_adc_disable(ucb->ac97);
/* Switch back to interrupt mode. */
- ucb1400_ts_mode_int(ucb);
+ ucb1400_ts_mode_int(ucb->ac97);
msleep(10);
- if (ucb1400_ts_pen_down(ucb)) {
- ucb1400_ts_irq_enable(ucb);
+ if (ucb1400_ts_pen_down(ucb->ac97)) {
+ ucb1400_ts_irq_enable(ucb->ac97);
/*
* If we spat out a valid sample set last time,
}
wait_event_freezable_timeout(ucb->ts_wait,
- ucb->irq_pending || ucb->ts_restart || kthread_should_stop(),
- timeout);
+ ucb->irq_pending || ucb->ts_restart ||
+ kthread_should_stop(), timeout);
}
/* Send the "pen off" if we are stopping with the pen still active */
*/
static irqreturn_t ucb1400_hard_irq(int irqnr, void *devid)
{
- struct ucb1400 *ucb = devid;
+ struct ucb1400_ts *ucb = devid;
if (irqnr == ucb->irq) {
disable_irq(ucb->irq);
static int ucb1400_ts_open(struct input_dev *idev)
{
- struct ucb1400 *ucb = input_get_drvdata(idev);
+ struct ucb1400_ts *ucb = input_get_drvdata(idev);
int ret = 0;
BUG_ON(ucb->ts_task);
static void ucb1400_ts_close(struct input_dev *idev)
{
- struct ucb1400 *ucb = input_get_drvdata(idev);
+ struct ucb1400_ts *ucb = input_get_drvdata(idev);
if (ucb->ts_task)
kthread_stop(ucb->ts_task);
- ucb1400_ts_irq_disable(ucb);
- ucb1400_reg_write(ucb, UCB_TS_CR, 0);
-}
-
-#ifdef CONFIG_PM
-static int ucb1400_ts_resume(struct device *dev)
-{
- struct ucb1400 *ucb = dev_get_drvdata(dev);
-
- if (ucb->ts_task) {
- /*
- * Restart the TS thread to ensure the
- * TS interrupt mode is set up again
- * after sleep.
- */
- ucb->ts_restart = 1;
- wake_up(&ucb->ts_wait);
- }
- return 0;
+ ucb1400_ts_irq_disable(ucb->ac97);
+ ucb1400_reg_write(ucb->ac97, UCB_TS_CR, 0);
}
-#else
-#define ucb1400_ts_resume NULL
-#endif
#ifndef NO_IRQ
#define NO_IRQ 0
* Try to probe our interrupt, rather than relying on lots of
* hard-coded machine dependencies.
*/
-static int ucb1400_detect_irq(struct ucb1400 *ucb)
+static int ucb1400_ts_detect_irq(struct ucb1400_ts *ucb)
{
unsigned long mask, timeout;
mask = probe_irq_on();
/* Enable the ADC interrupt. */
- ucb1400_reg_write(ucb, UCB_IE_RIS, UCB_IE_ADC);
- ucb1400_reg_write(ucb, UCB_IE_FAL, UCB_IE_ADC);
- ucb1400_reg_write(ucb, UCB_IE_CLEAR, 0xffff);
- ucb1400_reg_write(ucb, UCB_IE_CLEAR, 0);
+ ucb1400_reg_write(ucb->ac97, UCB_IE_RIS, UCB_IE_ADC);
+ ucb1400_reg_write(ucb->ac97, UCB_IE_FAL, UCB_IE_ADC);
+ ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0xffff);
+ ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0);
/* Cause an ADC interrupt. */
- ucb1400_reg_write(ucb, UCB_ADC_CR, UCB_ADC_ENA);
- ucb1400_reg_write(ucb, UCB_ADC_CR, UCB_ADC_ENA | UCB_ADC_START);
+ ucb1400_reg_write(ucb->ac97, UCB_ADC_CR, UCB_ADC_ENA);
+ ucb1400_reg_write(ucb->ac97, UCB_ADC_CR, UCB_ADC_ENA | UCB_ADC_START);
/* Wait for the conversion to complete. */
timeout = jiffies + HZ/2;
- while (!(ucb1400_reg_read(ucb, UCB_ADC_DATA) & UCB_ADC_DAT_VALID)) {
+ while (!(ucb1400_reg_read(ucb->ac97, UCB_ADC_DATA) &
+ UCB_ADC_DAT_VALID)) {
cpu_relax();
if (time_after(jiffies, timeout)) {
printk(KERN_ERR "ucb1400: timed out in IRQ probe\n");
return -ENODEV;
}
}
- ucb1400_reg_write(ucb, UCB_ADC_CR, 0);
+ ucb1400_reg_write(ucb->ac97, UCB_ADC_CR, 0);
/* Disable and clear interrupt. */
- ucb1400_reg_write(ucb, UCB_IE_RIS, 0);
- ucb1400_reg_write(ucb, UCB_IE_FAL, 0);
- ucb1400_reg_write(ucb, UCB_IE_CLEAR, 0xffff);
- ucb1400_reg_write(ucb, UCB_IE_CLEAR, 0);
+ ucb1400_reg_write(ucb->ac97, UCB_IE_RIS, 0);
+ ucb1400_reg_write(ucb->ac97, UCB_IE_FAL, 0);
+ ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0xffff);
+ ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0);
/* Read triggered interrupt. */
ucb->irq = probe_irq_off(mask);
return 0;
}
-static int ucb1400_ts_probe(struct device *dev)
+static int ucb1400_ts_probe(struct platform_device *dev)
{
- struct ucb1400 *ucb;
- struct input_dev *idev;
- int error, id, x_res, y_res;
+ int error, x_res, y_res;
+ struct ucb1400_ts *ucb = dev->dev.platform_data;
- ucb = kzalloc(sizeof(struct ucb1400), GFP_KERNEL);
- idev = input_allocate_device();
- if (!ucb || !idev) {
+ ucb->ts_idev = input_allocate_device();
+ if (!ucb->ts_idev) {
error = -ENOMEM;
- goto err_free_devs;
+ goto err;
}
- ucb->ts_idev = idev;
- ucb->adcsync = adcsync;
- ucb->ac97 = to_ac97_t(dev);
- init_waitqueue_head(&ucb->ts_wait);
-
- id = ucb1400_reg_read(ucb, UCB_ID);
- if (id != UCB_ID_1400) {
- error = -ENODEV;
- goto err_free_devs;
- }
-
- error = ucb1400_detect_irq(ucb);
+ error = ucb1400_ts_detect_irq(ucb);
if (error) {
printk(KERN_ERR "UCB1400: IRQ probe failed\n");
goto err_free_devs;
}
+ init_waitqueue_head(&ucb->ts_wait);
+
error = request_irq(ucb->irq, ucb1400_hard_irq, IRQF_TRIGGER_RISING,
"UCB1400", ucb);
if (error) {
}
printk(KERN_DEBUG "UCB1400: found IRQ %d\n", ucb->irq);
- input_set_drvdata(idev, ucb);
+ input_set_drvdata(ucb->ts_idev, ucb);
- idev->dev.parent = dev;
- idev->name = "UCB1400 touchscreen interface";
- idev->id.vendor = ucb1400_reg_read(ucb, AC97_VENDOR_ID1);
- idev->id.product = id;
- idev->open = ucb1400_ts_open;
- idev->close = ucb1400_ts_close;
- idev->evbit[0] = BIT_MASK(EV_ABS);
+ ucb->ts_idev->dev.parent = &dev->dev;
+ ucb->ts_idev->name = "UCB1400 touchscreen interface";
+ ucb->ts_idev->id.vendor = ucb1400_reg_read(ucb->ac97,
+ AC97_VENDOR_ID1);
+ ucb->ts_idev->id.product = ucb->id;
+ ucb->ts_idev->open = ucb1400_ts_open;
+ ucb->ts_idev->close = ucb1400_ts_close;
+ ucb->ts_idev->evbit[0] = BIT_MASK(EV_ABS);
- ucb1400_adc_enable(ucb);
+ ucb1400_adc_enable(ucb->ac97);
x_res = ucb1400_ts_read_xres(ucb);
y_res = ucb1400_ts_read_yres(ucb);
- ucb1400_adc_disable(ucb);
+ ucb1400_adc_disable(ucb->ac97);
printk(KERN_DEBUG "UCB1400: 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(ucb->ts_idev, ABS_X, 0, x_res, 0, 0);
+ input_set_abs_params(ucb->ts_idev, ABS_Y, 0, y_res, 0, 0);
+ input_set_abs_params(ucb->ts_idev, ABS_PRESSURE, 0, 0, 0, 0);
- error = input_register_device(idev);
+ error = input_register_device(ucb->ts_idev);
if (error)
goto err_free_irq;
- dev_set_drvdata(dev, ucb);
return 0;
- err_free_irq:
+err_free_irq:
free_irq(ucb->irq, ucb);
- err_free_devs:
- input_free_device(idev);
- kfree(ucb);
+err_free_devs:
+ input_free_device(ucb->ts_idev);
+err:
return error;
+
}
-static int ucb1400_ts_remove(struct device *dev)
+static int ucb1400_ts_remove(struct platform_device *dev)
{
- struct ucb1400 *ucb = dev_get_drvdata(dev);
+ struct ucb1400_ts *ucb = dev->dev.platform_data;
free_irq(ucb->irq, ucb);
input_unregister_device(ucb->ts_idev);
- dev_set_drvdata(dev, NULL);
- kfree(ucb);
return 0;
}
-static struct device_driver ucb1400_ts_driver = {
- .name = "ucb1400_ts",
- .owner = THIS_MODULE,
- .bus = &ac97_bus_type,
- .probe = ucb1400_ts_probe,
- .remove = ucb1400_ts_remove,
- .resume = ucb1400_ts_resume,
+#ifdef CONFIG_PM
+static int ucb1400_ts_resume(struct platform_device *dev)
+{
+ struct ucb1400_ts *ucb = platform_get_drvdata(dev);
+
+ if (ucb->ts_task) {
+ /*
+ * Restart the TS thread to ensure the
+ * TS interrupt mode is set up again
+ * after sleep.
+ */
+ ucb->ts_restart = 1;
+ wake_up(&ucb->ts_wait);
+ }
+ return 0;
+}
+#else
+#define ucb1400_ts_resume NULL
+#endif
+
+static struct platform_driver ucb1400_ts_driver = {
+ .probe = ucb1400_ts_probe,
+ .remove = ucb1400_ts_remove,
+ .resume = ucb1400_ts_resume,
+ .driver = {
+ .name = "ucb1400_ts",
+ },
};
static int __init ucb1400_ts_init(void)
{
- return driver_register(&ucb1400_ts_driver);
+ return platform_driver_register(&ucb1400_ts_driver);
}
static void __exit ucb1400_ts_exit(void)
{
- driver_unregister(&ucb1400_ts_driver);
+ platform_driver_unregister(&ucb1400_ts_driver);
}
module_param(adcsync, bool, 0444);
MODULE_PARM_DESC(adcsync, "Synchronize touch readings with ADCSYNC pin.");
module_param(ts_delay, int, 0444);
-MODULE_PARM_DESC(ts_delay, "Delay between panel setup and position read. Default = 55us.");
+MODULE_PARM_DESC(ts_delay, "Delay between panel setup and"
+ " position read. Default = 55us.");
module_param(ts_delay_pressure, int, 0444);
MODULE_PARM_DESC(ts_delay_pressure,
- "delay between panel setup and pressure read. Default = 0us.");
+ "delay between panel setup and pressure read."
+ " Default = 0us.");
module_init(ucb1400_ts_init);
module_exit(ucb1400_ts_exit);
--- /dev/null
+/*
+ * Register definitions and functions for:
+ * Philips UCB1400 driver
+ *
+ * Based on ucb1400_ts:
+ * Author: Nicolas Pitre
+ * Created: September 25, 2006
+ * Copyright: MontaVista Software, Inc.
+ *
+ * Spliting done by: Marek Vasut <marek.vasut@gmail.com>
+ * If something doesnt work and it worked before spliting, e-mail me,
+ * dont bother Nicolas please ;-)
+ *
+ * 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.
+ */
+
+#ifndef _LINUX__UCB1400_H
+#define _LINUX__UCB1400_H
+
+#include <sound/ac97_codec.h>
+#include <linux/mutex.h>
+#include <linux/platform_device.h>
+
+/*
+ * UCB1400 AC-link registers
+ */
+
+#define UCB_IO_DATA 0x5a
+#define UCB_IO_DIR 0x5c
+#define UCB_IE_RIS 0x5e
+#define UCB_IE_FAL 0x60
+#define UCB_IE_STATUS 0x62
+#define UCB_IE_CLEAR 0x62
+#define UCB_IE_ADC (1 << 11)
+#define UCB_IE_TSPX (1 << 12)
+
+#define UCB_TS_CR 0x64
+#define UCB_TS_CR_TSMX_POW (1 << 0)
+#define UCB_TS_CR_TSPX_POW (1 << 1)
+#define UCB_TS_CR_TSMY_POW (1 << 2)
+#define UCB_TS_CR_TSPY_POW (1 << 3)
+#define UCB_TS_CR_TSMX_GND (1 << 4)
+#define UCB_TS_CR_TSPX_GND (1 << 5)
+#define UCB_TS_CR_TSMY_GND (1 << 6)
+#define UCB_TS_CR_TSPY_GND (1 << 7)
+#define UCB_TS_CR_MODE_INT (0 << 8)
+#define UCB_TS_CR_MODE_PRES (1 << 8)
+#define UCB_TS_CR_MODE_POS (2 << 8)
+#define UCB_TS_CR_BIAS_ENA (1 << 11)
+#define UCB_TS_CR_TSPX_LOW (1 << 12)
+#define UCB_TS_CR_TSMX_LOW (1 << 13)
+
+#define UCB_ADC_CR 0x66
+#define UCB_ADC_SYNC_ENA (1 << 0)
+#define UCB_ADC_VREFBYP_CON (1 << 1)
+#define UCB_ADC_INP_TSPX (0 << 2)
+#define UCB_ADC_INP_TSMX (1 << 2)
+#define UCB_ADC_INP_TSPY (2 << 2)
+#define UCB_ADC_INP_TSMY (3 << 2)
+#define UCB_ADC_INP_AD0 (4 << 2)
+#define UCB_ADC_INP_AD1 (5 << 2)
+#define UCB_ADC_INP_AD2 (6 << 2)
+#define UCB_ADC_INP_AD3 (7 << 2)
+#define UCB_ADC_EXT_REF (1 << 5)
+#define UCB_ADC_START (1 << 7)
+#define UCB_ADC_ENA (1 << 15)
+
+#define UCB_ADC_DATA 0x68
+#define UCB_ADC_DAT_VALID (1 << 15)
+#define UCB_ADC_DAT_MASK 0x3ff
+
+#define UCB_ID 0x7e
+#define UCB_ID_1400 0x4304
+
+struct ucb1400_ts {
+ struct input_dev *ts_idev;
+ struct task_struct *ts_task;
+ int id;
+ wait_queue_head_t ts_wait;
+ unsigned int ts_restart:1;
+ int irq;
+ unsigned int irq_pending; /* not bit field shared */
+ struct snd_ac97 *ac97;
+};
+
+struct ucb1400 {
+ struct platform_device *ucb1400_ts;
+};
+
+static inline u16 ucb1400_reg_read(struct snd_ac97 *ac97, u16 reg)
+{
+ return ac97->bus->ops->read(ac97, reg);
+}
+
+static inline void ucb1400_reg_write(struct snd_ac97 *ac97, u16 reg, u16 val)
+{
+ ac97->bus->ops->write(ac97, reg, val);
+}
+
+static inline u16 ucb1400_gpio_get_value(struct snd_ac97 *ac97, u16 gpio)
+{
+ return ucb1400_reg_read(ac97, UCB_IO_DATA) & (1 << gpio);
+}
+
+static inline void ucb1400_gpio_set_value(struct snd_ac97 *ac97, u16 gpio,
+ u16 val)
+{
+ ucb1400_reg_write(ac97, UCB_IO_DATA, val ?
+ ucb1400_reg_read(ac97, UCB_IO_DATA) | (1 << gpio) :
+ ucb1400_reg_read(ac97, UCB_IO_DATA) & ~(1 << gpio));
+}
+
+static inline u16 ucb1400_gpio_get_direction(struct snd_ac97 *ac97, u16 gpio)
+{
+ return ucb1400_reg_read(ac97, UCB_IO_DIR) & (1 << gpio);
+}
+
+static inline void ucb1400_gpio_set_direction(struct snd_ac97 *ac97, u16 gpio,
+ u16 dir)
+{
+ ucb1400_reg_write(ac97, UCB_IO_DIR, dir ?
+ ucb1400_reg_read(ac97, UCB_IO_DIR) | (1 << gpio) :
+ ucb1400_reg_read(ac97, UCB_IO_DIR) & ~(1 << gpio));
+}
+
+static inline void ucb1400_adc_enable(struct snd_ac97 *ac97)
+{
+ ucb1400_reg_write(ac97, UCB_ADC_CR, UCB_ADC_ENA);
+}
+
+static unsigned int ucb1400_adc_read(struct snd_ac97 *ac97, u16 adc_channel,
+ int adcsync)
+{
+ unsigned int val;
+
+ if (adcsync)
+ adc_channel |= UCB_ADC_SYNC_ENA;
+
+ ucb1400_reg_write(ac97, UCB_ADC_CR, UCB_ADC_ENA | adc_channel);
+ ucb1400_reg_write(ac97, UCB_ADC_CR, UCB_ADC_ENA | adc_channel |
+ UCB_ADC_START);
+
+ while (!((val = ucb1400_reg_read(ac97, UCB_ADC_DATA))
+ & UCB_ADC_DAT_VALID))
+ schedule_timeout_uninterruptible(1);
+
+ return val & UCB_ADC_DAT_MASK;
+}
+
+static inline void ucb1400_adc_disable(struct snd_ac97 *ac97)
+{
+ ucb1400_reg_write(ac97, UCB_ADC_CR, 0);
+}
+
+#endif
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff