* The touchscreen interface operates as follows:
*
* 1) Pen is pressed against the touchscreen.
- * 2) TSC2005 performs AD conversion.
- * 3) After the conversion is done TSC2005 drives DAV line down.
- * 4) GPIO IRQ is received and tsc2005_irq_thread() is scheduled.
- * 5) tsc2005_irq_thread() queues up a transfer to fetch the x, y, z1, z2
+ * 2) TSC200X performs AD conversion.
+ * 3) After the conversion is done TSC200X drives DAV line down.
+ * 4) GPIO IRQ is received and tsc200x_irq_thread() is scheduled.
+ * 5) tsc200x_irq_thread() queues up a transfer to fetch the x, y, z1, z2
* values.
- * 6) tsc2005_irq_thread() reports coordinates to input layer and sets up
- * tsc2005_penup_timer() to be called after TSC2005_PENUP_TIME_MS (40ms).
+ * 6) tsc200x_irq_thread() reports coordinates to input layer and sets up
+ * tsc200x_penup_timer() to be called after TSC200X_PENUP_TIME_MS (40ms).
* 7) When the penup timer expires, there have not been touch or DAV interrupts
* during the last 40ms which means the pen has been lifted.
*
- * ESD recovery via a hardware reset is done if the TSC2005 doesn't respond
+ * ESD recovery via a hardware reset is done if the TSC200X doesn't respond
* after a configurable period (in ms) of activity. If esd_timeout is 0, the
* watchdog is disabled.
*/
-static const struct regmap_range tsc2005_writable_ranges[] = {
- regmap_reg_range(TSC2005_REG_AUX_HIGH, TSC2005_REG_CFR2),
+static const struct regmap_range tsc200x_writable_ranges[] = {
+ regmap_reg_range(TSC200X_REG_AUX_HIGH, TSC200X_REG_CFR2),
};
-static const struct regmap_access_table tsc2005_writable_table = {
- .yes_ranges = tsc2005_writable_ranges,
- .n_yes_ranges = ARRAY_SIZE(tsc2005_writable_ranges),
+static const struct regmap_access_table tsc200x_writable_table = {
+ .yes_ranges = tsc200x_writable_ranges,
+ .n_yes_ranges = ARRAY_SIZE(tsc200x_writable_ranges),
};
const struct regmap_config tsc200x_regmap_config = {
.val_bits = 16,
.reg_stride = 0x08,
.max_register = 0x78,
- .read_flag_mask = TSC2005_REG_READ,
- .write_flag_mask = TSC2005_REG_PND0,
- .wr_table = &tsc2005_writable_table,
+ .read_flag_mask = TSC200X_REG_READ,
+ .write_flag_mask = TSC200X_REG_PND0,
+ .wr_table = &tsc200x_writable_table,
.use_single_rw = true,
};
EXPORT_SYMBOL_GPL(tsc200x_regmap_config);
-struct tsc2005_data {
+struct tsc200x_data {
u16 x;
u16 y;
u16 z1;
u16 z2;
} __packed;
-#define TSC2005_DATA_REGS 4
+#define TSC200X_DATA_REGS 4
-struct tsc2005 {
+struct tsc200x {
struct device *dev;
struct regmap *regmap;
__u16 bustype;
int irq;
};
-static void tsc2005_update_pen_state(struct tsc2005 *ts,
+static void tsc200x_update_pen_state(struct tsc200x *ts,
int x, int y, int pressure)
{
if (pressure) {
pressure);
}
-static irqreturn_t tsc2005_irq_thread(int irq, void *_ts)
+static irqreturn_t tsc200x_irq_thread(int irq, void *_ts)
{
- struct tsc2005 *ts = _ts;
+ struct tsc200x *ts = _ts;
unsigned long flags;
unsigned int pressure;
- struct tsc2005_data tsdata;
+ struct tsc200x_data tsdata;
int error;
/* read the coordinates */
- error = regmap_bulk_read(ts->regmap, TSC2005_REG_X, &tsdata,
- TSC2005_DATA_REGS);
+ error = regmap_bulk_read(ts->regmap, TSC200X_REG_X, &tsdata,
+ TSC200X_DATA_REGS);
if (unlikely(error))
goto out;
spin_lock_irqsave(&ts->lock, flags);
- tsc2005_update_pen_state(ts, tsdata.x, tsdata.y, pressure);
+ tsc200x_update_pen_state(ts, tsdata.x, tsdata.y, pressure);
mod_timer(&ts->penup_timer,
- jiffies + msecs_to_jiffies(TSC2005_PENUP_TIME_MS));
+ jiffies + msecs_to_jiffies(TSC200X_PENUP_TIME_MS));
spin_unlock_irqrestore(&ts->lock, flags);
return IRQ_HANDLED;
}
-static void tsc2005_penup_timer(unsigned long data)
+static void tsc200x_penup_timer(unsigned long data)
{
- struct tsc2005 *ts = (struct tsc2005 *)data;
+ struct tsc200x *ts = (struct tsc200x *)data;
unsigned long flags;
spin_lock_irqsave(&ts->lock, flags);
- tsc2005_update_pen_state(ts, 0, 0, 0);
+ tsc200x_update_pen_state(ts, 0, 0, 0);
spin_unlock_irqrestore(&ts->lock, flags);
}
-static void tsc2005_start_scan(struct tsc2005 *ts)
+static void tsc200x_start_scan(struct tsc200x *ts)
{
- regmap_write(ts->regmap, TSC2005_REG_CFR0, TSC2005_CFR0_INITVALUE);
- regmap_write(ts->regmap, TSC2005_REG_CFR1, TSC2005_CFR1_INITVALUE);
- regmap_write(ts->regmap, TSC2005_REG_CFR2, TSC2005_CFR2_INITVALUE);
- ts->tsc200x_cmd(ts->dev, TSC2005_CMD_NORMAL);
+ regmap_write(ts->regmap, TSC200X_REG_CFR0, TSC200X_CFR0_INITVALUE);
+ regmap_write(ts->regmap, TSC200X_REG_CFR1, TSC200X_CFR1_INITVALUE);
+ regmap_write(ts->regmap, TSC200X_REG_CFR2, TSC200X_CFR2_INITVALUE);
+ ts->tsc200x_cmd(ts->dev, TSC200X_CMD_NORMAL);
}
-static void tsc2005_stop_scan(struct tsc2005 *ts)
+static void tsc200x_stop_scan(struct tsc200x *ts)
{
- ts->tsc200x_cmd(ts->dev, TSC2005_CMD_STOP);
+ ts->tsc200x_cmd(ts->dev, TSC200X_CMD_STOP);
}
-static void tsc2005_set_reset(struct tsc2005 *ts, bool enable)
+static void tsc200x_set_reset(struct tsc200x *ts, bool enable)
{
if (ts->reset_gpio)
gpiod_set_value_cansleep(ts->reset_gpio, enable);
}
/* must be called with ts->mutex held */
-static void __tsc2005_disable(struct tsc2005 *ts)
+static void __tsc200x_disable(struct tsc200x *ts)
{
- tsc2005_stop_scan(ts);
+ tsc200x_stop_scan(ts);
disable_irq(ts->irq);
del_timer_sync(&ts->penup_timer);
}
/* must be called with ts->mutex held */
-static void __tsc2005_enable(struct tsc2005 *ts)
+static void __tsc200x_enable(struct tsc200x *ts)
{
- tsc2005_start_scan(ts);
+ tsc200x_start_scan(ts);
if (ts->esd_timeout && (ts->set_reset || ts->reset_gpio)) {
ts->last_valid_interrupt = jiffies;
}
}
-static ssize_t tsc2005_selftest_show(struct device *dev,
+static ssize_t tsc200x_selftest_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- struct tsc2005 *ts = dev_get_drvdata(dev);
+ struct tsc200x *ts = dev_get_drvdata(dev);
unsigned int temp_high;
unsigned int temp_high_orig;
unsigned int temp_high_test;
mutex_lock(&ts->mutex);
/*
- * Test TSC2005 communications via temp high register.
+ * Test TSC200X communications via temp high register.
*/
- __tsc2005_disable(ts);
+ __tsc200x_disable(ts);
- error = regmap_read(ts->regmap, TSC2005_REG_TEMP_HIGH, &temp_high_orig);
+ error = regmap_read(ts->regmap, TSC200X_REG_TEMP_HIGH, &temp_high_orig);
if (error) {
dev_warn(dev, "selftest failed: read error %d\n", error);
success = false;
temp_high_test = (temp_high_orig - 1) & MAX_12BIT;
- error = regmap_write(ts->regmap, TSC2005_REG_TEMP_HIGH, temp_high_test);
+ error = regmap_write(ts->regmap, TSC200X_REG_TEMP_HIGH, temp_high_test);
if (error) {
dev_warn(dev, "selftest failed: write error %d\n", error);
success = false;
goto out;
}
- error = regmap_read(ts->regmap, TSC2005_REG_TEMP_HIGH, &temp_high);
+ error = regmap_read(ts->regmap, TSC200X_REG_TEMP_HIGH, &temp_high);
if (error) {
dev_warn(dev, "selftest failed: read error %d after write\n",
error);
}
/* hardware reset */
- tsc2005_set_reset(ts, false);
+ tsc200x_set_reset(ts, false);
usleep_range(100, 500); /* only 10us required */
- tsc2005_set_reset(ts, true);
+ tsc200x_set_reset(ts, true);
if (!success)
goto out;
/* test that the reset really happened */
- error = regmap_read(ts->regmap, TSC2005_REG_TEMP_HIGH, &temp_high);
+ error = regmap_read(ts->regmap, TSC200X_REG_TEMP_HIGH, &temp_high);
if (error) {
dev_warn(dev, "selftest failed: read error %d after reset\n",
error);
}
out:
- __tsc2005_enable(ts);
+ __tsc200x_enable(ts);
mutex_unlock(&ts->mutex);
return sprintf(buf, "%d\n", success);
}
-static DEVICE_ATTR(selftest, S_IRUGO, tsc2005_selftest_show, NULL);
+static DEVICE_ATTR(selftest, S_IRUGO, tsc200x_selftest_show, NULL);
-static struct attribute *tsc2005_attrs[] = {
+static struct attribute *tsc200x_attrs[] = {
&dev_attr_selftest.attr,
NULL
};
-static umode_t tsc2005_attr_is_visible(struct kobject *kobj,
+static umode_t tsc200x_attr_is_visible(struct kobject *kobj,
struct attribute *attr, int n)
{
struct device *dev = container_of(kobj, struct device, kobj);
- struct tsc2005 *ts = dev_get_drvdata(dev);
+ struct tsc200x *ts = dev_get_drvdata(dev);
umode_t mode = attr->mode;
if (attr == &dev_attr_selftest.attr) {
return mode;
}
-static const struct attribute_group tsc2005_attr_group = {
- .is_visible = tsc2005_attr_is_visible,
- .attrs = tsc2005_attrs,
+static const struct attribute_group tsc200x_attr_group = {
+ .is_visible = tsc200x_attr_is_visible,
+ .attrs = tsc200x_attrs,
};
-static void tsc2005_esd_work(struct work_struct *work)
+static void tsc200x_esd_work(struct work_struct *work)
{
- struct tsc2005 *ts = container_of(work, struct tsc2005, esd_work.work);
+ struct tsc200x *ts = container_of(work, struct tsc200x, esd_work.work);
int error;
unsigned int r;
goto out;
/* We should be able to read register without disabling interrupts. */
- error = regmap_read(ts->regmap, TSC2005_REG_CFR0, &r);
+ error = regmap_read(ts->regmap, TSC200X_REG_CFR0, &r);
if (!error &&
- !((r ^ TSC2005_CFR0_INITVALUE) & TSC2005_CFR0_RW_MASK)) {
+ !((r ^ TSC200X_CFR0_INITVALUE) & TSC200X_CFR0_RW_MASK)) {
goto out;
}
* then we should reset the controller as if from power-up and start
* scanning again.
*/
- dev_info(ts->dev, "TSC2005 not responding - resetting\n");
+ dev_info(ts->dev, "TSC200X not responding - resetting\n");
disable_irq(ts->irq);
del_timer_sync(&ts->penup_timer);
- tsc2005_update_pen_state(ts, 0, 0, 0);
+ tsc200x_update_pen_state(ts, 0, 0, 0);
- tsc2005_set_reset(ts, false);
+ tsc200x_set_reset(ts, false);
usleep_range(100, 500); /* only 10us required */
- tsc2005_set_reset(ts, true);
+ tsc200x_set_reset(ts, true);
enable_irq(ts->irq);
- tsc2005_start_scan(ts);
+ tsc200x_start_scan(ts);
out:
mutex_unlock(&ts->mutex);
msecs_to_jiffies(ts->esd_timeout)));
}
-static int tsc2005_open(struct input_dev *input)
+static int tsc200x_open(struct input_dev *input)
{
- struct tsc2005 *ts = input_get_drvdata(input);
+ struct tsc200x *ts = input_get_drvdata(input);
mutex_lock(&ts->mutex);
if (!ts->suspended)
- __tsc2005_enable(ts);
+ __tsc200x_enable(ts);
ts->opened = true;
return 0;
}
-static void tsc2005_close(struct input_dev *input)
+static void tsc200x_close(struct input_dev *input)
{
- struct tsc2005 *ts = input_get_drvdata(input);
+ struct tsc200x *ts = input_get_drvdata(input);
mutex_lock(&ts->mutex);
if (!ts->suspended)
- __tsc2005_disable(ts);
+ __tsc200x_disable(ts);
ts->opened = false;
const struct tsc2005_platform_data *pdata = dev_get_platdata(dev);
struct device_node *np = dev->of_node;
- struct tsc2005 *ts;
+ struct tsc200x *ts;
struct input_dev *input_dev;
unsigned int max_x = MAX_12BIT;
unsigned int max_y = MAX_12BIT;
unsigned int max_p = MAX_12BIT;
- unsigned int fudge_x = TSC2005_DEF_X_FUZZ;
- unsigned int fudge_y = TSC2005_DEF_Y_FUZZ;
- unsigned int fudge_p = TSC2005_DEF_P_FUZZ;
- unsigned int x_plate_ohm = TSC2005_DEF_RESISTOR;
+ unsigned int fudge_x = TSC200X_DEF_X_FUZZ;
+ unsigned int fudge_y = TSC200X_DEF_Y_FUZZ;
+ unsigned int fudge_p = TSC200X_DEF_P_FUZZ;
+ unsigned int x_plate_ohm = TSC200X_DEF_RESISTOR;
unsigned int esd_timeout;
int error;
x_plate_ohm = pdata->ts_x_plate_ohm;
esd_timeout = pdata->esd_timeout_ms;
} else {
- x_plate_ohm = TSC2005_DEF_RESISTOR;
+ x_plate_ohm = TSC200X_DEF_RESISTOR;
of_property_read_u32(np, "ti,x-plate-ohms", &x_plate_ohm);
esd_timeout = 0;
of_property_read_u32(np, "ti,esd-recovery-timeout-ms",
mutex_init(&ts->mutex);
spin_lock_init(&ts->lock);
- setup_timer(&ts->penup_timer, tsc2005_penup_timer, (unsigned long)ts);
+ setup_timer(&ts->penup_timer, tsc200x_penup_timer, (unsigned long)ts);
- INIT_DELAYED_WORK(&ts->esd_work, tsc2005_esd_work);
+ INIT_DELAYED_WORK(&ts->esd_work, tsc200x_esd_work);
snprintf(ts->phys, sizeof(ts->phys),
"%s/input-ts", dev_name(dev));
- input_dev->name = "TSC2005 touchscreen";
+ input_dev->name = "TSC200X touchscreen";
input_dev->phys = ts->phys;
input_dev->id.bustype = bustype;
input_dev->dev.parent = dev;
if (np)
touchscreen_parse_properties(input_dev, false);
- input_dev->open = tsc2005_open;
- input_dev->close = tsc2005_close;
+ input_dev->open = tsc200x_open;
+ input_dev->close = tsc200x_close;
input_set_drvdata(input_dev, ts);
/* Ensure the touchscreen is off */
- tsc2005_stop_scan(ts);
+ tsc200x_stop_scan(ts);
error = devm_request_threaded_irq(dev, irq, NULL,
- tsc2005_irq_thread,
+ tsc200x_irq_thread,
IRQF_TRIGGER_RISING | IRQF_ONESHOT,
- "tsc2005", ts);
+ "tsc200x", ts);
if (error) {
dev_err(dev, "Failed to request irq, err: %d\n", error);
return error;
}
dev_set_drvdata(dev, ts);
- error = sysfs_create_group(&dev->kobj, &tsc2005_attr_group);
+ error = sysfs_create_group(&dev->kobj, &tsc200x_attr_group);
if (error) {
dev_err(dev,
"Failed to create sysfs attributes, err: %d\n", error);
return 0;
err_remove_sysfs:
- sysfs_remove_group(&dev->kobj, &tsc2005_attr_group);
+ sysfs_remove_group(&dev->kobj, &tsc200x_attr_group);
disable_regulator:
if (ts->vio)
regulator_disable(ts->vio);
int tsc200x_remove(struct device *dev)
{
- struct tsc2005 *ts = dev_get_drvdata(dev);
+ struct tsc200x *ts = dev_get_drvdata(dev);
- sysfs_remove_group(&dev->kobj, &tsc2005_attr_group);
+ sysfs_remove_group(&dev->kobj, &tsc200x_attr_group);
if (ts->vio)
regulator_disable(ts->vio);
}
EXPORT_SYMBOL_GPL(tsc200x_remove);
-static int __maybe_unused tsc2005_suspend(struct device *dev)
+static int __maybe_unused tsc200x_suspend(struct device *dev)
{
- struct tsc2005 *ts = dev_get_drvdata(dev);
+ struct tsc200x *ts = dev_get_drvdata(dev);
mutex_lock(&ts->mutex);
if (!ts->suspended && ts->opened)
- __tsc2005_disable(ts);
+ __tsc200x_disable(ts);
ts->suspended = true;
return 0;
}
-static int __maybe_unused tsc2005_resume(struct device *dev)
+static int __maybe_unused tsc200x_resume(struct device *dev)
{
- struct tsc2005 *ts = dev_get_drvdata(dev);
+ struct tsc200x *ts = dev_get_drvdata(dev);
mutex_lock(&ts->mutex);
if (ts->suspended && ts->opened)
- __tsc2005_enable(ts);
+ __tsc200x_enable(ts);
ts->suspended = false;
return 0;
}
-SIMPLE_DEV_PM_OPS(tsc200x_pm_ops, tsc2005_suspend, tsc2005_resume);
+SIMPLE_DEV_PM_OPS(tsc200x_pm_ops, tsc200x_suspend, tsc200x_resume);
EXPORT_SYMBOL_GPL(tsc200x_pm_ops);
MODULE_AUTHOR("Lauri Leukkunen <lauri.leukkunen@nokia.com>");
-MODULE_DESCRIPTION("TSC2005 Touchscreen Driver");
+MODULE_DESCRIPTION("TSC200x Touchscreen Driver Core");
MODULE_LICENSE("GPL");
projects / karo-tx-linux.git / blobdiff