#include <linux/module.h>
#include <linux/ratelimit.h>
+#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/input.h>
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/debugfs.h>
#include <linux/slab.h>
-#include <linux/gpio.h>
-#include <linux/of_gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/input/mt.h>
#include <linux/input/touchscreen.h>
-#include <linux/input/edt-ft5x06.h>
-
-#define MAX_SUPPORT_POINTS 5
+#include <linux/of_device.h>
#define WORK_REGISTER_THRESHOLD 0x00
#define WORK_REGISTER_REPORT_RATE 0x08
u16 num_x;
u16 num_y;
- int reset_pin;
- int irq_pin;
- int wake_pin;
+ struct gpio_desc *reset_gpio;
+ struct gpio_desc *wake_gpio;
#if defined(CONFIG_DEBUG_FS)
struct dentry *debug_dir;
int gain;
int offset;
int report_rate;
+ int max_support_points;
char name[EDT_NAME_LEN];
enum edt_ver version;
};
+struct edt_i2c_chip_data {
+ int max_support_points;
+};
+
static int edt_ft5x06_ts_readwrite(struct i2c_client *client,
u16 wr_len, u8 *wr_buf,
u16 rd_len, u8 *rd_buf)
struct edt_ft5x06_ts_data *tsdata = dev_id;
struct device *dev = &tsdata->client->dev;
u8 cmd;
- u8 rdbuf[29];
+ u8 rdbuf[63];
int i, type, x, y, id;
- int offset, tplen, datalen;
+ int offset, tplen, datalen, crclen;
int error;
switch (tsdata->version) {
cmd = 0xf9; /* tell the controller to send touch data */
offset = 5; /* where the actual touch data starts */
tplen = 4; /* data comes in so called frames */
- datalen = 26; /* how much bytes to listen for */
+ crclen = 1; /* length of the crc data */
break;
case M09:
- cmd = 0x02;
- offset = 1;
+ cmd = 0x0;
+ offset = 3;
tplen = 6;
- datalen = 29;
+ crclen = 0;
break;
default:
}
memset(rdbuf, 0, sizeof(rdbuf));
+ datalen = tplen * tsdata->max_support_points + offset + crclen;
error = edt_ft5x06_ts_readwrite(tsdata->client,
sizeof(cmd), &cmd,
goto out;
}
- for (i = 0; i < MAX_SUPPORT_POINTS; i++) {
+ for (i = 0; i < tsdata->max_support_points; i++) {
u8 *buf = &rdbuf[i * tplen + offset];
bool down;
#endif /* CONFIG_DEBUGFS */
-static int edt_ft5x06_ts_reset(struct i2c_client *client,
- struct edt_ft5x06_ts_data *tsdata)
-{
- int error;
-
- if (gpio_is_valid(tsdata->wake_pin)) {
- error = devm_gpio_request_one(&client->dev,
- tsdata->wake_pin, GPIOF_OUT_INIT_LOW,
- "edt-ft5x06 wake");
- if (error) {
- dev_err(&client->dev,
- "Failed to request GPIO %d as wake pin, error %d\n",
- tsdata->wake_pin, error);
- return error;
- }
-
- msleep(5);
- gpio_set_value(tsdata->wake_pin, 1);
- }
- if (gpio_is_valid(tsdata->reset_pin)) {
- /* this pulls reset down, enabling the low active reset */
- error = devm_gpio_request_one(&client->dev,
- tsdata->reset_pin, GPIOF_OUT_INIT_LOW,
- "edt-ft5x06 reset");
- if (error) {
- dev_err(&client->dev,
- "Failed to request GPIO %d as reset pin, error %d\n",
- tsdata->reset_pin, error);
- return error;
- }
-
- msleep(5);
- gpio_set_value(tsdata->reset_pin, 1);
- msleep(300);
- }
-
- return 0;
-}
-
static int edt_ft5x06_ts_identify(struct i2c_client *client,
struct edt_ft5x06_ts_data *tsdata,
char *fw_version)
return 0;
}
-#define EDT_ATTR_CHECKSET(name, reg) \
-do { \
- if (pdata->name >= edt_ft5x06_attr_##name.limit_low && \
- pdata->name <= edt_ft5x06_attr_##name.limit_high) \
- edt_ft5x06_register_write(tsdata, reg, pdata->name); \
-} while (0)
-
-#define EDT_GET_PROP(name, reg) { \
- u32 val; \
- if (of_property_read_u32(np, #name, &val) == 0) \
- edt_ft5x06_register_write(tsdata, reg, val); \
-}
-
-static void edt_ft5x06_ts_get_dt_defaults(struct device_node *np,
- struct edt_ft5x06_ts_data *tsdata)
+static void edt_ft5x06_ts_get_defaults(struct device *dev,
+ struct edt_ft5x06_ts_data *tsdata)
{
struct edt_reg_addr *reg_addr = &tsdata->reg_addr;
+ u32 val;
+ int error;
- EDT_GET_PROP(threshold, reg_addr->reg_threshold);
- EDT_GET_PROP(gain, reg_addr->reg_gain);
- EDT_GET_PROP(offset, reg_addr->reg_offset);
-}
+ error = device_property_read_u32(dev, "threshold", &val);
+ if (!error)
+ reg_addr->reg_threshold = val;
-static void
-edt_ft5x06_ts_get_defaults(struct edt_ft5x06_ts_data *tsdata,
- const struct edt_ft5x06_platform_data *pdata)
-{
- struct edt_reg_addr *reg_addr = &tsdata->reg_addr;
-
- if (!pdata->use_parameters)
- return;
+ error = device_property_read_u32(dev, "gain", &val);
+ if (!error)
+ reg_addr->reg_gain = val;
- /* pick up defaults from the platform data */
- EDT_ATTR_CHECKSET(threshold, reg_addr->reg_threshold);
- EDT_ATTR_CHECKSET(gain, reg_addr->reg_gain);
- EDT_ATTR_CHECKSET(offset, reg_addr->reg_offset);
- if (reg_addr->reg_report_rate != NO_REGISTER)
- EDT_ATTR_CHECKSET(report_rate, reg_addr->reg_report_rate);
+ error = device_property_read_u32(dev, "offset", &val);
+ if (!error)
+ reg_addr->reg_offset = val;
}
static void
}
}
-#ifdef CONFIG_OF
-static int edt_ft5x06_i2c_ts_probe_dt(struct device *dev,
- struct edt_ft5x06_ts_data *tsdata)
-{
- struct device_node *np = dev->of_node;
-
- /*
- * irq_pin is not needed for DT setup.
- * irq is associated via 'interrupts' property in DT
- */
- tsdata->irq_pin = -EINVAL;
- tsdata->reset_pin = of_get_named_gpio(np, "reset-gpios", 0);
- tsdata->wake_pin = of_get_named_gpio(np, "wake-gpios", 0);
-
- return 0;
-}
-#else
-static inline int edt_ft5x06_i2c_ts_probe_dt(struct device *dev,
- struct edt_ft5x06_ts_data *tsdata)
-{
- return -ENODEV;
-}
-#endif
-
static int edt_ft5x06_ts_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
- const struct edt_ft5x06_platform_data *pdata =
- dev_get_platdata(&client->dev);
+ const struct edt_i2c_chip_data *chip_data;
struct edt_ft5x06_ts_data *tsdata;
struct input_dev *input;
+ unsigned long irq_flags;
int error;
char fw_version[EDT_NAME_LEN];
return -ENOMEM;
}
- if (!pdata) {
- error = edt_ft5x06_i2c_ts_probe_dt(&client->dev, tsdata);
- if (error) {
- dev_err(&client->dev,
- "DT probe failed and no platform data present\n");
- return error;
- }
- } else {
- tsdata->reset_pin = pdata->reset_pin;
- tsdata->irq_pin = pdata->irq_pin;
- tsdata->wake_pin = -EINVAL;
+ chip_data = of_device_get_match_data(&client->dev);
+ if (!chip_data)
+ chip_data = (const struct edt_i2c_chip_data *)id->driver_data;
+ if (!chip_data || !chip_data->max_support_points) {
+ dev_err(&client->dev, "invalid or missing chip data\n");
+ return -EINVAL;
}
- error = edt_ft5x06_ts_reset(client, tsdata);
- if (error)
+ tsdata->max_support_points = chip_data->max_support_points;
+
+ tsdata->reset_gpio = devm_gpiod_get_optional(&client->dev,
+ "reset", GPIOD_OUT_HIGH);
+ if (IS_ERR(tsdata->reset_gpio)) {
+ error = PTR_ERR(tsdata->reset_gpio);
+ dev_err(&client->dev,
+ "Failed to request GPIO reset pin, error %d\n", error);
+ return error;
+ }
+
+ tsdata->wake_gpio = devm_gpiod_get_optional(&client->dev,
+ "wake", GPIOD_OUT_LOW);
+ if (IS_ERR(tsdata->wake_gpio)) {
+ error = PTR_ERR(tsdata->wake_gpio);
+ dev_err(&client->dev,
+ "Failed to request GPIO wake pin, error %d\n", error);
return error;
+ }
- if (gpio_is_valid(tsdata->irq_pin)) {
- error = devm_gpio_request_one(&client->dev, tsdata->irq_pin,
- GPIOF_IN, "edt-ft5x06 irq");
- if (error) {
- dev_err(&client->dev,
- "Failed to request GPIO %d, error %d\n",
- tsdata->irq_pin, error);
- return error;
- }
+ if (tsdata->wake_gpio) {
+ usleep_range(5000, 6000);
+ gpiod_set_value_cansleep(tsdata->wake_gpio, 1);
+ }
+
+ if (tsdata->reset_gpio) {
+ usleep_range(5000, 6000);
+ gpiod_set_value_cansleep(tsdata->reset_gpio, 0);
+ msleep(300);
}
input = devm_input_allocate_device(&client->dev);
}
edt_ft5x06_ts_set_regs(tsdata);
-
- if (!pdata)
- edt_ft5x06_ts_get_dt_defaults(client->dev.of_node, tsdata);
- else
- edt_ft5x06_ts_get_defaults(tsdata, pdata);
-
+ edt_ft5x06_ts_get_defaults(&client->dev, tsdata);
edt_ft5x06_ts_get_parameters(tsdata);
dev_dbg(&client->dev,
input_set_abs_params(input, ABS_MT_POSITION_Y,
0, tsdata->num_y * 64 - 1, 0, 0);
- if (!pdata)
- touchscreen_parse_properties(input, true);
+ touchscreen_parse_properties(input, true);
- error = input_mt_init_slots(input, MAX_SUPPORT_POINTS, INPUT_MT_DIRECT);
+ error = input_mt_init_slots(input, tsdata->max_support_points,
+ INPUT_MT_DIRECT);
if (error) {
dev_err(&client->dev, "Unable to init MT slots.\n");
return error;
input_set_drvdata(input, tsdata);
i2c_set_clientdata(client, tsdata);
- error = devm_request_threaded_irq(&client->dev, client->irq, NULL,
- edt_ft5x06_ts_isr,
- IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+ irq_flags = irq_get_trigger_type(client->irq);
+ if (irq_flags == IRQF_TRIGGER_NONE)
+ irq_flags = IRQF_TRIGGER_FALLING;
+ irq_flags |= IRQF_ONESHOT;
+
+ error = devm_request_threaded_irq(&client->dev, client->irq,
+ NULL, edt_ft5x06_ts_isr, irq_flags,
client->name, tsdata);
if (error) {
dev_err(&client->dev, "Unable to request touchscreen IRQ.\n");
dev_dbg(&client->dev,
"EDT FT5x06 initialized: IRQ %d, WAKE pin %d, Reset pin %d.\n",
- client->irq, tsdata->wake_pin, tsdata->reset_pin);
+ client->irq,
+ tsdata->wake_gpio ? desc_to_gpio(tsdata->wake_gpio) : -1,
+ tsdata->reset_gpio ? desc_to_gpio(tsdata->reset_gpio) : -1);
return 0;
static SIMPLE_DEV_PM_OPS(edt_ft5x06_ts_pm_ops,
edt_ft5x06_ts_suspend, edt_ft5x06_ts_resume);
+static const struct edt_i2c_chip_data edt_ft5x06_data = {
+ .max_support_points = 5,
+};
+
+static const struct edt_i2c_chip_data edt_ft5506_data = {
+ .max_support_points = 10,
+};
+
static const struct i2c_device_id edt_ft5x06_ts_id[] = {
- { "edt-ft5x06", 0, },
+ { .name = "edt-ft5x06", .driver_data = (long)&edt_ft5x06_data },
+ { .name = "edt-ft5506", .driver_data = (long)&edt_ft5506_data },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(i2c, edt_ft5x06_ts_id);
#ifdef CONFIG_OF
static const struct of_device_id edt_ft5x06_of_match[] = {
- { .compatible = "edt,edt-ft5206", },
- { .compatible = "edt,edt-ft5306", },
- { .compatible = "edt,edt-ft5406", },
+ { .compatible = "edt,edt-ft5206", .data = &edt_ft5x06_data },
+ { .compatible = "edt,edt-ft5306", .data = &edt_ft5x06_data },
+ { .compatible = "edt,edt-ft5406", .data = &edt_ft5x06_data },
+ { .compatible = "edt,edt-ft5506", .data = &edt_ft5506_data },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, edt_ft5x06_of_match);
projects / karo-tx-linux.git / blobdiff