#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/input/auo-pixcir-ts.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
/*
* Coordinate calculation:
struct auo_pixcir_ts {
struct i2c_client *client;
struct input_dev *input;
+ const struct auo_pixcir_ts_platdata *pdata;
char phys[32];
/* special handling for touch_indicate interupt mode */
struct auo_point_t *point)
{
struct i2c_client *client = ts->client;
- const struct auo_pixcir_ts_platdata *pdata = client->dev.platform_data;
+ const struct auo_pixcir_ts_platdata *pdata = ts->pdata;
uint8_t raw_coord[8];
uint8_t raw_area[4];
int i, ret;
static irqreturn_t auo_pixcir_interrupt(int irq, void *dev_id)
{
struct auo_pixcir_ts *ts = dev_id;
- struct i2c_client *client = ts->client;
- const struct auo_pixcir_ts_platdata *pdata = client->dev.platform_data;
+ const struct auo_pixcir_ts_platdata *pdata = ts->pdata;
struct auo_point_t point[AUO_PIXCIR_REPORT_POINTS];
int i;
int ret;
return 0;
}
-static __devinit int auo_pixcir_int_config(struct auo_pixcir_ts *ts,
+static int auo_pixcir_int_config(struct auo_pixcir_ts *ts,
int int_setting)
{
struct i2c_client *client = ts->client;
- struct auo_pixcir_ts_platdata *pdata = client->dev.platform_data;
+ const struct auo_pixcir_ts_platdata *pdata = ts->pdata;
int ret;
ret = i2c_smbus_read_byte_data(client, AUO_PIXCIR_REG_INT_SETTING);
}
#endif
-static SIMPLE_DEV_PM_OPS(auo_pixcir_pm_ops, auo_pixcir_suspend,
- auo_pixcir_resume);
+static SIMPLE_DEV_PM_OPS(auo_pixcir_pm_ops,
+ auo_pixcir_suspend, auo_pixcir_resume);
+
+#ifdef CONFIG_OF
+static struct auo_pixcir_ts_platdata *auo_pixcir_parse_dt(struct device *dev)
+{
+ struct auo_pixcir_ts_platdata *pdata;
+ struct device_node *np = dev->of_node;
+
+ if (!np)
+ return ERR_PTR(-ENOENT);
+
+ pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata) {
+ dev_err(dev, "failed to allocate platform data\n");
+ return ERR_PTR(-ENOMEM);
+ }
+
+ pdata->gpio_int = of_get_gpio(np, 0);
+ if (!gpio_is_valid(pdata->gpio_int)) {
+ dev_err(dev, "failed to get interrupt gpio\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ pdata->gpio_rst = of_get_gpio(np, 1);
+ if (!gpio_is_valid(pdata->gpio_rst)) {
+ dev_err(dev, "failed to get reset gpio\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (of_property_read_u32(np, "x-size", &pdata->x_max)) {
+ dev_err(dev, "failed to get x-size property\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (of_property_read_u32(np, "y-size", &pdata->y_max)) {
+ dev_err(dev, "failed to get y-size property\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ /* default to asserting the interrupt when the screen is touched */
+ pdata->int_setting = AUO_PIXCIR_INT_TOUCH_IND;
+
+ return pdata;
+}
+#else
+static struct auo_pixcir_ts_platdata *auo_pixcir_parse_dt(struct device *dev)
+{
+ return ERR_PTR(-EINVAL);
+}
+#endif
+
+static void auo_pixcir_reset(void *data)
+{
+ struct auo_pixcir_ts *ts = data;
-static int __devinit auo_pixcir_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+ gpio_set_value(ts->pdata->gpio_rst, 0);
+}
+
+static int auo_pixcir_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
{
- const struct auo_pixcir_ts_platdata *pdata = client->dev.platform_data;
+ const struct auo_pixcir_ts_platdata *pdata;
struct auo_pixcir_ts *ts;
struct input_dev *input_dev;
- int ret;
-
- if (!pdata)
- return -EINVAL;
+ int version;
+ int error;
+
+ pdata = dev_get_platdata(&client->dev);
+ if (!pdata) {
+ pdata = auo_pixcir_parse_dt(&client->dev);
+ if (IS_ERR(pdata))
+ return PTR_ERR(pdata);
+ }
- ts = kzalloc(sizeof(struct auo_pixcir_ts), GFP_KERNEL);
+ ts = devm_kzalloc(&client->dev,
+ sizeof(struct auo_pixcir_ts), GFP_KERNEL);
if (!ts)
return -ENOMEM;
- ret = gpio_request(pdata->gpio_int, "auo_pixcir_ts_int");
- if (ret) {
- dev_err(&client->dev, "request of gpio %d failed, %d\n",
- pdata->gpio_int, ret);
- goto err_gpio_int;
+ input_dev = devm_input_allocate_device(&client->dev);
+ if (!input_dev) {
+ dev_err(&client->dev, "could not allocate input device\n");
+ return -ENOMEM;
}
- if (pdata->init_hw)
- pdata->init_hw(client);
-
+ ts->pdata = pdata;
ts->client = client;
+ ts->input = input_dev;
ts->touch_ind_mode = 0;
+ ts->stopped = true;
init_waitqueue_head(&ts->wait);
snprintf(ts->phys, sizeof(ts->phys),
"%s/input0", dev_name(&client->dev));
- input_dev = input_allocate_device();
- if (!input_dev) {
- dev_err(&client->dev, "could not allocate input device\n");
- goto err_input_alloc;
- }
-
- ts->input = input_dev;
-
input_dev->name = "AUO-Pixcir touchscreen";
input_dev->phys = ts->phys;
input_dev->id.bustype = BUS_I2C;
- input_dev->dev.parent = &client->dev;
input_dev->open = auo_pixcir_input_open;
input_dev->close = auo_pixcir_input_close;
AUO_PIXCIR_MAX_AREA, 0, 0);
input_set_abs_params(input_dev, ABS_MT_ORIENTATION, 0, 1, 0, 0);
- ret = i2c_smbus_read_byte_data(client, AUO_PIXCIR_REG_VERSION);
- if (ret < 0)
- goto err_fw_vers;
- dev_info(&client->dev, "firmware version 0x%X\n", ret);
-
- ret = auo_pixcir_int_config(ts, pdata->int_setting);
- if (ret)
- goto err_fw_vers;
-
input_set_drvdata(ts->input, ts);
- ts->stopped = true;
- ret = request_threaded_irq(client->irq, NULL, auo_pixcir_interrupt,
- IRQF_TRIGGER_RISING | IRQF_ONESHOT,
- input_dev->name, ts);
- if (ret) {
- dev_err(&client->dev, "irq %d requested failed\n", client->irq);
- goto err_fw_vers;
+ error = devm_gpio_request_one(&client->dev, pdata->gpio_int,
+ GPIOF_DIR_IN, "auo_pixcir_ts_int");
+ if (error) {
+ dev_err(&client->dev, "request of gpio %d failed, %d\n",
+ pdata->gpio_int, error);
+ return error;
}
- /* stop device and put it into deep sleep until it is opened */
- ret = auo_pixcir_stop(ts);
- if (ret < 0)
- goto err_input_register;
-
- ret = input_register_device(input_dev);
- if (ret) {
- dev_err(&client->dev, "could not register input device\n");
- goto err_input_register;
+ error = devm_gpio_request_one(&client->dev, pdata->gpio_rst,
+ GPIOF_DIR_OUT | GPIOF_INIT_HIGH,
+ "auo_pixcir_ts_rst");
+ if (error) {
+ dev_err(&client->dev, "request of gpio %d failed, %d\n",
+ pdata->gpio_rst, error);
+ return error;
}
- i2c_set_clientdata(client, ts);
-
- return 0;
+ error = devm_add_action(&client->dev, auo_pixcir_reset, ts);
+ if (error) {
+ auo_pixcir_reset(ts);
+ dev_err(&client->dev, "failed to register reset action, %d\n",
+ error);
+ return error;
+ }
-err_input_register:
- free_irq(client->irq, ts);
-err_fw_vers:
- input_free_device(input_dev);
-err_input_alloc:
- if (pdata->exit_hw)
- pdata->exit_hw(client);
- gpio_free(pdata->gpio_int);
-err_gpio_int:
- kfree(ts);
+ msleep(200);
- return ret;
-}
-
-static int __devexit auo_pixcir_remove(struct i2c_client *client)
-{
- struct auo_pixcir_ts *ts = i2c_get_clientdata(client);
- const struct auo_pixcir_ts_platdata *pdata = client->dev.platform_data;
+ version = i2c_smbus_read_byte_data(client, AUO_PIXCIR_REG_VERSION);
+ if (version < 0) {
+ error = version;
+ return error;
+ }
- free_irq(client->irq, ts);
+ dev_info(&client->dev, "firmware version 0x%X\n", version);
- input_unregister_device(ts->input);
+ error = auo_pixcir_int_config(ts, pdata->int_setting);
+ if (error)
+ return error;
- if (pdata->exit_hw)
- pdata->exit_hw(client);
+ error = devm_request_threaded_irq(&client->dev, client->irq,
+ NULL, auo_pixcir_interrupt,
+ IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+ input_dev->name, ts);
+ if (error) {
+ dev_err(&client->dev, "irq %d requested failed, %d\n",
+ client->irq, error);
+ return error;
+ }
- gpio_free(pdata->gpio_int);
+ /* stop device and put it into deep sleep until it is opened */
+ error = auo_pixcir_stop(ts);
+ if (error)
+ return error;
+
+ error = input_register_device(input_dev);
+ if (error) {
+ dev_err(&client->dev, "could not register input device, %d\n",
+ error);
+ return error;
+ }
- kfree(ts);
+ i2c_set_clientdata(client, ts);
return 0;
}
};
MODULE_DEVICE_TABLE(i2c, auo_pixcir_idtable);
+#ifdef CONFIG_OF
+static struct of_device_id auo_pixcir_ts_dt_idtable[] = {
+ { .compatible = "auo,auo_pixcir_ts" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, auo_pixcir_ts_dt_idtable);
+#endif
+
static struct i2c_driver auo_pixcir_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "auo_pixcir_ts",
.pm = &auo_pixcir_pm_ops,
+ .of_match_table = of_match_ptr(auo_pixcir_ts_dt_idtable),
},
.probe = auo_pixcir_probe,
- .remove = __devexit_p(auo_pixcir_remove),
.id_table = auo_pixcir_idtable,
};
projects / ~andy / linux / blobdiff