This adds a struct eeti_ts_platform_data which currently holds only one
value to specify the interrupt polarity.
The driver has a fallback if no platform data is passed in via the
i2c_board_info, so no regression is caused.
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
#include <linux/i2c.h>
#include <linux/timer.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/timer.h>
#include <linux/gpio.h>
+#include <linux/input/eeti_ts.h>
static int flip_x;
module_param(flip_x, bool, 0644);
static int flip_x;
module_param(flip_x, bool, 0644);
struct input_dev *input;
struct work_struct work;
struct mutex mutex;
struct input_dev *input;
struct work_struct work;
struct mutex mutex;
+ int irq, irq_active_high;
};
#define EETI_TS_BITDEPTH (11)
};
#define EETI_TS_BITDEPTH (11)
#define REPORT_BIT_HAS_PRESSURE (1 << 6)
#define REPORT_RES_BITS(v) (((v) >> 1) + EETI_TS_BITDEPTH)
#define REPORT_BIT_HAS_PRESSURE (1 << 6)
#define REPORT_RES_BITS(v) (((v) >> 1) + EETI_TS_BITDEPTH)
+static inline int eeti_ts_irq_active(struct eeti_ts_priv *priv)
+{
+ return gpio_get_value(irq_to_gpio(priv->irq)) == priv->irq_active_high;
+}
+
static void eeti_ts_read(struct work_struct *work)
{
char buf[6];
static void eeti_ts_read(struct work_struct *work)
{
char buf[6];
mutex_lock(&priv->mutex);
mutex_lock(&priv->mutex);
- while (!gpio_get_value(irq_to_gpio(priv->irq)) && --to)
+ while (eeti_ts_irq_active(priv) && --to)
i2c_master_recv(priv->client, buf, sizeof(buf));
if (!to) {
i2c_master_recv(priv->client, buf, sizeof(buf));
if (!to) {
static int __devinit eeti_ts_probe(struct i2c_client *client,
const struct i2c_device_id *idp)
{
static int __devinit eeti_ts_probe(struct i2c_client *client,
const struct i2c_device_id *idp)
{
+ struct eeti_ts_platform_data *pdata;
struct eeti_ts_priv *priv;
struct input_dev *input;
struct eeti_ts_priv *priv;
struct input_dev *input;
+ unsigned int irq_flags;
int err = -ENOMEM;
/* In contrast to what's described in the datasheet, there seems
int err = -ENOMEM;
/* In contrast to what's described in the datasheet, there seems
priv->input = input;
priv->irq = client->irq;
priv->input = input;
priv->irq = client->irq;
+ pdata = client->dev.platform_data;
+
+ if (pdata)
+ priv->irq_active_high = pdata->irq_active_high;
+
+ irq_flags = priv->irq_active_high ?
+ IRQF_TRIGGER_RISING : IRQF_TRIGGER_FALLING;
+
INIT_WORK(&priv->work, eeti_ts_read);
i2c_set_clientdata(client, priv);
input_set_drvdata(input, priv);
INIT_WORK(&priv->work, eeti_ts_read);
i2c_set_clientdata(client, priv);
input_set_drvdata(input, priv);
- err = request_irq(priv->irq, eeti_ts_isr, IRQF_TRIGGER_FALLING,
+ err = request_irq(priv->irq, eeti_ts_isr, irq_flags,
client->name, priv);
if (err) {
dev_err(&client->dev, "Unable to request touchscreen IRQ.\n");
client->name, priv);
if (err) {
dev_err(&client->dev, "Unable to request touchscreen IRQ.\n");
--- /dev/null
+#ifndef LINUX_INPUT_EETI_TS_H
+#define LINUX_INPUT_EETI_TS_H
+
+struct eeti_ts_platform_data {
+ unsigned int irq_active_high;
+};
+
+#endif /* LINUX_INPUT_EETI_TS_H */
+