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path: root/drivers/input/touchscreen/edt-ft5x06.c
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Diffstat (limited to 'drivers/input/touchscreen/edt-ft5x06.c')
-rw-r--r--drivers/input/touchscreen/edt-ft5x06.c1038
1 files changed, 698 insertions, 340 deletions
diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c
index 1e18ca0d1b4e..bf498bd4dea9 100644
--- a/drivers/input/touchscreen/edt-ft5x06.c
+++ b/drivers/input/touchscreen/edt-ft5x06.c
@@ -1,20 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2012 Simon Budig, <simon.budig@kernelconcepts.de>
* Daniel Wagener <daniel.wagener@kernelconcepts.de> (M09 firmware support)
* Lothar Waßmann <LW@KARO-electronics.de> (DT support)
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Dario Binacchi <dario.binacchi@amarulasolutions.com> (regmap support)
*/
/*
@@ -25,20 +14,25 @@
* http://www.glyn.com/Products/Displays
*/
-#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/uaccess.h>
-#include <linux/delay.h>
#include <linux/debugfs.h>
-#include <linux/slab.h>
+#include <linux/delay.h>
#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/input.h>
#include <linux/input/mt.h>
#include <linux/input/touchscreen.h>
-#include <linux/of_device.h>
+#include <linux/irq.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/property.h>
+#include <linux/ratelimit.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+
+#include <linux/unaligned.h>
#define WORK_REGISTER_THRESHOLD 0x00
#define WORK_REGISTER_REPORT_RATE 0x08
@@ -47,16 +41,27 @@
#define WORK_REGISTER_NUM_X 0x33
#define WORK_REGISTER_NUM_Y 0x34
+#define PMOD_REGISTER_ACTIVE 0x00
+#define PMOD_REGISTER_HIBERNATE 0x03
+
#define M09_REGISTER_THRESHOLD 0x80
#define M09_REGISTER_GAIN 0x92
#define M09_REGISTER_OFFSET 0x93
#define M09_REGISTER_NUM_X 0x94
#define M09_REGISTER_NUM_Y 0x95
+#define M12_REGISTER_REPORT_RATE 0x88
+
+#define EV_REGISTER_THRESHOLD 0x40
+#define EV_REGISTER_GAIN 0x41
+#define EV_REGISTER_OFFSET_Y 0x45
+#define EV_REGISTER_OFFSET_X 0x46
+
#define NO_REGISTER 0xff
#define WORK_REGISTER_OPMODE 0x3c
#define FACTORY_REGISTER_OPMODE 0x01
+#define PMOD_REGISTER_OPMODE 0xa5
#define TOUCH_EVENT_DOWN 0x00
#define TOUCH_EVENT_UP 0x01
@@ -69,10 +74,23 @@
#define EDT_RAW_DATA_RETRIES 100
#define EDT_RAW_DATA_DELAY 1000 /* usec */
+#define EDT_DEFAULT_NUM_X 1024
+#define EDT_DEFAULT_NUM_Y 1024
+
+#define M06_REG_CMD(factory) ((factory) ? 0xf3 : 0xfc)
+#define M06_REG_ADDR(factory, addr) ((factory) ? (addr) & 0x7f : (addr) & 0x3f)
+
+enum edt_pmode {
+ EDT_PMODE_NOT_SUPPORTED,
+ EDT_PMODE_HIBERNATE,
+ EDT_PMODE_POWEROFF,
+};
+
enum edt_ver {
EDT_M06,
EDT_M09,
EDT_M12,
+ EV_FT,
GENERIC_FT,
};
@@ -81,6 +99,8 @@ struct edt_reg_addr {
int reg_report_rate;
int reg_gain;
int reg_offset;
+ int reg_offset_x;
+ int reg_offset_y;
int reg_num_x;
int reg_num_y;
};
@@ -91,65 +111,51 @@ struct edt_ft5x06_ts_data {
struct touchscreen_properties prop;
u16 num_x;
u16 num_y;
+ struct regulator *vcc;
+ struct regulator *iovcc;
struct gpio_desc *reset_gpio;
struct gpio_desc *wake_gpio;
+ struct regmap *regmap;
+
#if defined(CONFIG_DEBUG_FS)
- struct dentry *debug_dir;
u8 *raw_buffer;
size_t raw_bufsize;
#endif
struct mutex mutex;
bool factory_mode;
+ enum edt_pmode suspend_mode;
int threshold;
int gain;
int offset;
+ int offset_x;
+ int offset_y;
int report_rate;
int max_support_points;
+ int point_len;
+ u8 tdata_cmd;
+ int tdata_len;
+ int tdata_offset;
char name[EDT_NAME_LEN];
+ char fw_version[EDT_NAME_LEN];
struct edt_reg_addr reg_addr;
enum edt_ver version;
+ unsigned int crc_errors;
+ unsigned int header_errors;
};
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 i2c_msg wrmsg[2];
- int i = 0;
- int ret;
-
- if (wr_len) {
- wrmsg[i].addr = client->addr;
- wrmsg[i].flags = 0;
- wrmsg[i].len = wr_len;
- wrmsg[i].buf = wr_buf;
- i++;
- }
- if (rd_len) {
- wrmsg[i].addr = client->addr;
- wrmsg[i].flags = I2C_M_RD;
- wrmsg[i].len = rd_len;
- wrmsg[i].buf = rd_buf;
- i++;
- }
-
- ret = i2c_transfer(client->adapter, wrmsg, i);
- if (ret < 0)
- return ret;
- if (ret != i)
- return -EIO;
-
- return 0;
-}
+static const struct regmap_config edt_ft5x06_i2c_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+};
static bool edt_ft5x06_ts_check_crc(struct edt_ft5x06_ts_data *tsdata,
u8 *buf, int buflen)
@@ -160,176 +166,184 @@ static bool edt_ft5x06_ts_check_crc(struct edt_ft5x06_ts_data *tsdata,
for (i = 0; i < buflen - 1; i++)
crc ^= buf[i];
- if (crc != buf[buflen-1]) {
+ if (crc != buf[buflen - 1]) {
+ tsdata->crc_errors++;
dev_err_ratelimited(&tsdata->client->dev,
"crc error: 0x%02x expected, got 0x%02x\n",
- crc, buf[buflen-1]);
+ crc, buf[buflen - 1]);
return false;
}
return true;
}
-static irqreturn_t edt_ft5x06_ts_isr(int irq, void *dev_id)
+static int edt_M06_i2c_read(void *context, const void *reg_buf, size_t reg_size,
+ void *val_buf, size_t val_size)
{
- struct edt_ft5x06_ts_data *tsdata = dev_id;
- struct device *dev = &tsdata->client->dev;
- u8 cmd;
- u8 rdbuf[63];
- int i, type, x, y, id;
- int offset, tplen, datalen, crclen;
- int error;
+ struct device *dev = context;
+ struct i2c_client *i2c = to_i2c_client(dev);
+ struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(i2c);
+ struct i2c_msg xfer[2];
+ bool reg_read = false;
+ u8 addr;
+ u8 wlen;
+ u8 wbuf[4], rbuf[3];
+ int ret;
- switch (tsdata->version) {
- case EDT_M06:
- 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 */
- crclen = 1; /* length of the crc data */
+ addr = *((u8 *)reg_buf);
+ wbuf[0] = addr;
+ switch (addr) {
+ case 0xf5:
+ wlen = 3;
+ wbuf[0] = 0xf5;
+ wbuf[1] = 0xe;
+ wbuf[2] = *((u8 *)val_buf);
break;
-
- case EDT_M09:
- case EDT_M12:
- case GENERIC_FT:
- cmd = 0x0;
- offset = 3;
- tplen = 6;
- crclen = 0;
+ case 0xf9:
+ wlen = 1;
break;
-
default:
- goto out;
+ wlen = 2;
+ reg_read = true;
+ wbuf[0] = M06_REG_CMD(tsdata->factory_mode);
+ wbuf[1] = M06_REG_ADDR(tsdata->factory_mode, addr);
+ wbuf[1] |= tsdata->factory_mode ? 0x80 : 0x40;
}
- memset(rdbuf, 0, sizeof(rdbuf));
- datalen = tplen * tsdata->max_support_points + offset + crclen;
+ xfer[0].addr = i2c->addr;
+ xfer[0].flags = 0;
+ xfer[0].len = wlen;
+ xfer[0].buf = wbuf;
- error = edt_ft5x06_ts_readwrite(tsdata->client,
- sizeof(cmd), &cmd,
- datalen, rdbuf);
- if (error) {
- dev_err_ratelimited(dev, "Unable to fetch data, error: %d\n",
- error);
- goto out;
+ xfer[1].addr = i2c->addr;
+ xfer[1].flags = I2C_M_RD;
+ xfer[1].len = reg_read ? 2 : val_size;
+ xfer[1].buf = reg_read ? rbuf : val_buf;
+
+ ret = i2c_transfer(i2c->adapter, xfer, 2);
+ if (ret != 2) {
+ if (ret < 0)
+ return ret;
+
+ return -EIO;
}
- /* M09/M12 does not send header or CRC */
- if (tsdata->version == EDT_M06) {
- if (rdbuf[0] != 0xaa || rdbuf[1] != 0xaa ||
- rdbuf[2] != datalen) {
+ if (addr == 0xf9) {
+ u8 *buf = (u8 *)val_buf;
+
+ if (buf[0] != 0xaa || buf[1] != 0xaa ||
+ buf[2] != val_size) {
+ tsdata->header_errors++;
dev_err_ratelimited(dev,
- "Unexpected header: %02x%02x%02x!\n",
- rdbuf[0], rdbuf[1], rdbuf[2]);
- goto out;
+ "Unexpected header: %02x%02x%02x\n",
+ buf[0], buf[1], buf[2]);
+ return -EIO;
}
- if (!edt_ft5x06_ts_check_crc(tsdata, rdbuf, datalen))
- goto out;
+ if (!edt_ft5x06_ts_check_crc(tsdata, val_buf, val_size))
+ return -EIO;
+ } else if (reg_read) {
+ wbuf[2] = rbuf[0];
+ wbuf[3] = rbuf[1];
+ if (!edt_ft5x06_ts_check_crc(tsdata, wbuf, 4))
+ return -EIO;
+
+ *((u8 *)val_buf) = rbuf[0];
}
- for (i = 0; i < tsdata->max_support_points; i++) {
- u8 *buf = &rdbuf[i * tplen + offset];
- bool down;
+ return 0;
+}
- type = buf[0] >> 6;
- /* ignore Reserved events */
- if (type == TOUCH_EVENT_RESERVED)
- continue;
+static int edt_M06_i2c_write(void *context, const void *data, size_t count)
+{
+ struct device *dev = context;
+ struct i2c_client *i2c = to_i2c_client(dev);
+ struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(i2c);
+ u8 addr, val;
+ u8 wbuf[4];
+ struct i2c_msg xfer;
+ int ret;
- /* M06 sometimes sends bogus coordinates in TOUCH_DOWN */
- if (tsdata->version == EDT_M06 && type == TOUCH_EVENT_DOWN)
- continue;
+ addr = *((u8 *)data);
+ val = *((u8 *)data + 1);
- x = ((buf[0] << 8) | buf[1]) & 0x0fff;
- y = ((buf[2] << 8) | buf[3]) & 0x0fff;
- id = (buf[2] >> 4) & 0x0f;
- down = type != TOUCH_EVENT_UP;
+ wbuf[0] = M06_REG_CMD(tsdata->factory_mode);
+ wbuf[1] = M06_REG_ADDR(tsdata->factory_mode, addr);
+ wbuf[2] = val;
+ wbuf[3] = wbuf[0] ^ wbuf[1] ^ wbuf[2];
- input_mt_slot(tsdata->input, id);
- input_mt_report_slot_state(tsdata->input, MT_TOOL_FINGER, down);
+ xfer.addr = i2c->addr;
+ xfer.flags = 0;
+ xfer.len = 4;
+ xfer.buf = wbuf;
- if (!down)
- continue;
+ ret = i2c_transfer(i2c->adapter, &xfer, 1);
+ if (ret != 1) {
+ if (ret < 0)
+ return ret;
- touchscreen_report_pos(tsdata->input, &tsdata->prop, x, y,
- true);
+ return -EIO;
}
- input_mt_report_pointer_emulation(tsdata->input, true);
- input_sync(tsdata->input);
-
-out:
- return IRQ_HANDLED;
+ return 0;
}
-static int edt_ft5x06_register_write(struct edt_ft5x06_ts_data *tsdata,
- u8 addr, u8 value)
-{
- u8 wrbuf[4];
-
- switch (tsdata->version) {
- case EDT_M06:
- wrbuf[0] = tsdata->factory_mode ? 0xf3 : 0xfc;
- wrbuf[1] = tsdata->factory_mode ? addr & 0x7f : addr & 0x3f;
- wrbuf[2] = value;
- wrbuf[3] = wrbuf[0] ^ wrbuf[1] ^ wrbuf[2];
- return edt_ft5x06_ts_readwrite(tsdata->client, 4,
- wrbuf, 0, NULL);
- case EDT_M09:
- case EDT_M12:
- case GENERIC_FT:
- wrbuf[0] = addr;
- wrbuf[1] = value;
+static const struct regmap_config edt_M06_i2c_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .read = edt_M06_i2c_read,
+ .write = edt_M06_i2c_write,
+};
- return edt_ft5x06_ts_readwrite(tsdata->client, 2,
- wrbuf, 0, NULL);
+static irqreturn_t edt_ft5x06_ts_isr(int irq, void *dev_id)
+{
+ struct edt_ft5x06_ts_data *tsdata = dev_id;
+ struct device *dev = &tsdata->client->dev;
+ u8 rdbuf[63];
+ int i, type, x, y, id;
+ int error;
- default:
- return -EINVAL;
+ memset(rdbuf, 0, sizeof(rdbuf));
+ error = regmap_bulk_read(tsdata->regmap, tsdata->tdata_cmd, rdbuf,
+ tsdata->tdata_len);
+ if (error) {
+ dev_err_ratelimited(dev, "Unable to fetch data, error: %d\n",
+ error);
+ goto out;
}
-}
-static int edt_ft5x06_register_read(struct edt_ft5x06_ts_data *tsdata,
- u8 addr)
-{
- u8 wrbuf[2], rdbuf[2];
- int error;
+ for (i = 0; i < tsdata->max_support_points; i++) {
+ u8 *buf = &rdbuf[i * tsdata->point_len + tsdata->tdata_offset];
- switch (tsdata->version) {
- case EDT_M06:
- wrbuf[0] = tsdata->factory_mode ? 0xf3 : 0xfc;
- wrbuf[1] = tsdata->factory_mode ? addr & 0x7f : addr & 0x3f;
- wrbuf[1] |= tsdata->factory_mode ? 0x80 : 0x40;
+ type = buf[0] >> 6;
+ /* ignore Reserved events */
+ if (type == TOUCH_EVENT_RESERVED)
+ continue;
- error = edt_ft5x06_ts_readwrite(tsdata->client, 2, wrbuf, 2,
- rdbuf);
- if (error)
- return error;
+ /* M06 sometimes sends bogus coordinates in TOUCH_DOWN */
+ if (tsdata->version == EDT_M06 && type == TOUCH_EVENT_DOWN)
+ continue;
- if ((wrbuf[0] ^ wrbuf[1] ^ rdbuf[0]) != rdbuf[1]) {
- dev_err(&tsdata->client->dev,
- "crc error: 0x%02x expected, got 0x%02x\n",
- wrbuf[0] ^ wrbuf[1] ^ rdbuf[0],
- rdbuf[1]);
- return -EIO;
- }
- break;
+ x = get_unaligned_be16(buf) & 0x0fff;
+ y = get_unaligned_be16(buf + 2) & 0x0fff;
+ /* The FT5x26 send the y coordinate first */
+ if (tsdata->version == EV_FT)
+ swap(x, y);
- case EDT_M09:
- case EDT_M12:
- case GENERIC_FT:
- wrbuf[0] = addr;
- error = edt_ft5x06_ts_readwrite(tsdata->client, 1,
- wrbuf, 1, rdbuf);
- if (error)
- return error;
- break;
+ id = (buf[2] >> 4) & 0x0f;
- default:
- return -EINVAL;
+ input_mt_slot(tsdata->input, id);
+ if (input_mt_report_slot_state(tsdata->input, MT_TOOL_FINGER,
+ type != TOUCH_EVENT_UP))
+ touchscreen_report_pos(tsdata->input, &tsdata->prop,
+ x, y, true);
}
- return rdbuf[0];
+ input_mt_report_pointer_emulation(tsdata->input, true);
+ input_sync(tsdata->input);
+
+out:
+ return IRQ_HANDLED;
}
struct edt_ft5x06_attribute {
@@ -339,9 +353,10 @@ struct edt_ft5x06_attribute {
u8 limit_high;
u8 addr_m06;
u8 addr_m09;
+ u8 addr_ev;
};
-#define EDT_ATTR(_field, _mode, _addr_m06, _addr_m09, \
+#define EDT_ATTR(_field, _mode, _addr_m06, _addr_m09, _addr_ev, \
_limit_low, _limit_high) \
struct edt_ft5x06_attribute edt_ft5x06_attr_##_field = { \
.dattr = __ATTR(_field, _mode, \
@@ -350,6 +365,7 @@ struct edt_ft5x06_attribute {
.field_offset = offsetof(struct edt_ft5x06_ts_data, _field), \
.addr_m06 = _addr_m06, \
.addr_m09 = _addr_m09, \
+ .addr_ev = _addr_ev, \
.limit_low = _limit_low, \
.limit_high = _limit_high, \
}
@@ -363,7 +379,7 @@ static ssize_t edt_ft5x06_setting_show(struct device *dev,
struct edt_ft5x06_attribute *attr =
container_of(dattr, struct edt_ft5x06_attribute, dattr);
u8 *field = (u8 *)tsdata + attr->field_offset;
- int val;
+ unsigned int val;
size_t count = 0;
int error = 0;
u8 addr;
@@ -386,15 +402,18 @@ static ssize_t edt_ft5x06_setting_show(struct device *dev,
addr = attr->addr_m09;
break;
+ case EV_FT:
+ addr = attr->addr_ev;
+ break;
+
default:
error = -ENODEV;
goto out;
}
if (addr != NO_REGISTER) {
- val = edt_ft5x06_register_read(tsdata, addr);
- if (val < 0) {
- error = val;
+ error = regmap_read(tsdata->regmap, addr, &val);
+ if (error) {
dev_err(&tsdata->client->dev,
"Failed to fetch attribute %s, error %d\n",
dattr->attr.name, error);
@@ -411,7 +430,7 @@ static ssize_t edt_ft5x06_setting_show(struct device *dev,
*field = val;
}
- count = scnprintf(buf, PAGE_SIZE, "%d\n", val);
+ count = sysfs_emit(buf, "%d\n", val);
out:
mutex_unlock(&tsdata->mutex);
return error ?: count;
@@ -457,13 +476,17 @@ static ssize_t edt_ft5x06_setting_store(struct device *dev,
addr = attr->addr_m09;
break;
+ case EV_FT:
+ addr = attr->addr_ev;
+ break;
+
default:
error = -ENODEV;
goto out;
}
if (addr != NO_REGISTER) {
- error = edt_ft5x06_register_write(tsdata, addr, val);
+ error = regmap_write(tsdata->regmap, addr, val);
if (error) {
dev_err(&tsdata->client->dev,
"Failed to update attribute %s, error: %d\n",
@@ -480,35 +503,108 @@ out:
/* m06, m09: range 0-31, m12: range 0-5 */
static EDT_ATTR(gain, S_IWUSR | S_IRUGO, WORK_REGISTER_GAIN,
- M09_REGISTER_GAIN, 0, 31);
+ M09_REGISTER_GAIN, EV_REGISTER_GAIN, 0, 31);
/* m06, m09: range 0-31, m12: range 0-16 */
static EDT_ATTR(offset, S_IWUSR | S_IRUGO, WORK_REGISTER_OFFSET,
- M09_REGISTER_OFFSET, 0, 31);
+ M09_REGISTER_OFFSET, NO_REGISTER, 0, 31);
+/* m06, m09, m12: no supported, ev_ft: range 0-80 */
+static EDT_ATTR(offset_x, S_IWUSR | S_IRUGO, NO_REGISTER, NO_REGISTER,
+ EV_REGISTER_OFFSET_X, 0, 80);
+/* m06, m09, m12: no supported, ev_ft: range 0-80 */
+static EDT_ATTR(offset_y, S_IWUSR | S_IRUGO, NO_REGISTER, NO_REGISTER,
+ EV_REGISTER_OFFSET_Y, 0, 80);
/* m06: range 20 to 80, m09: range 0 to 30, m12: range 1 to 255... */
static EDT_ATTR(threshold, S_IWUSR | S_IRUGO, WORK_REGISTER_THRESHOLD,
- M09_REGISTER_THRESHOLD, 0, 255);
-/* m06: range 3 to 14, m12: (0x64: 100Hz) */
+ M09_REGISTER_THRESHOLD, EV_REGISTER_THRESHOLD, 0, 255);
+/* m06: range 3 to 14, m12: range 1 to 255 */
static EDT_ATTR(report_rate, S_IWUSR | S_IRUGO, WORK_REGISTER_REPORT_RATE,
- NO_REGISTER, 0, 255);
+ M12_REGISTER_REPORT_RATE, NO_REGISTER, 0, 255);
+
+static ssize_t model_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client);
+
+ return sysfs_emit(buf, "%s\n", tsdata->name);
+}
+
+static DEVICE_ATTR_RO(model);
+
+static ssize_t fw_version_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client);
+
+ return sysfs_emit(buf, "%s\n", tsdata->fw_version);
+}
+
+static DEVICE_ATTR_RO(fw_version);
+
+/* m06 only */
+static ssize_t header_errors_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client);
+
+ return sysfs_emit(buf, "%d\n", tsdata->header_errors);
+}
+
+static DEVICE_ATTR_RO(header_errors);
+
+/* m06 only */
+static ssize_t crc_errors_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client);
+
+ return sysfs_emit(buf, "%d\n", tsdata->crc_errors);
+}
+
+static DEVICE_ATTR_RO(crc_errors);
static struct attribute *edt_ft5x06_attrs[] = {
&edt_ft5x06_attr_gain.dattr.attr,
&edt_ft5x06_attr_offset.dattr.attr,
+ &edt_ft5x06_attr_offset_x.dattr.attr,
+ &edt_ft5x06_attr_offset_y.dattr.attr,
&edt_ft5x06_attr_threshold.dattr.attr,
&edt_ft5x06_attr_report_rate.dattr.attr,
+ &dev_attr_model.attr,
+ &dev_attr_fw_version.attr,
+ &dev_attr_header_errors.attr,
+ &dev_attr_crc_errors.attr,
NULL
};
+ATTRIBUTE_GROUPS(edt_ft5x06);
-static const struct attribute_group edt_ft5x06_attr_group = {
- .attrs = edt_ft5x06_attrs,
-};
+static void edt_ft5x06_restore_reg_parameters(struct edt_ft5x06_ts_data *tsdata)
+{
+ struct edt_reg_addr *reg_addr = &tsdata->reg_addr;
+ struct regmap *regmap = tsdata->regmap;
+
+ regmap_write(regmap, reg_addr->reg_threshold, tsdata->threshold);
+ regmap_write(regmap, reg_addr->reg_gain, tsdata->gain);
+ if (reg_addr->reg_offset != NO_REGISTER)
+ regmap_write(regmap, reg_addr->reg_offset, tsdata->offset);
+ if (reg_addr->reg_offset_x != NO_REGISTER)
+ regmap_write(regmap, reg_addr->reg_offset_x, tsdata->offset_x);
+ if (reg_addr->reg_offset_y != NO_REGISTER)
+ regmap_write(regmap, reg_addr->reg_offset_y, tsdata->offset_y);
+ if (reg_addr->reg_report_rate != NO_REGISTER)
+ regmap_write(regmap, reg_addr->reg_report_rate,
+ tsdata->report_rate);
+}
#ifdef CONFIG_DEBUG_FS
static int edt_ft5x06_factory_mode(struct edt_ft5x06_ts_data *tsdata)
{
struct i2c_client *client = tsdata->client;
int retries = EDT_SWITCH_MODE_RETRIES;
- int ret;
+ unsigned int val;
int error;
if (tsdata->version != EDT_M06) {
@@ -530,7 +626,7 @@ static int edt_ft5x06_factory_mode(struct edt_ft5x06_ts_data *tsdata)
}
/* mode register is 0x3c when in the work mode */
- error = edt_ft5x06_register_write(tsdata, WORK_REGISTER_OPMODE, 0x03);
+ error = regmap_write(tsdata->regmap, WORK_REGISTER_OPMODE, 0x03);
if (error) {
dev_err(&client->dev,
"failed to switch to factory mode, error %d\n", error);
@@ -541,8 +637,9 @@ static int edt_ft5x06_factory_mode(struct edt_ft5x06_ts_data *tsdata)
do {
mdelay(EDT_SWITCH_MODE_DELAY);
/* mode register is 0x01 when in factory mode */
- ret = edt_ft5x06_register_read(tsdata, FACTORY_REGISTER_OPMODE);
- if (ret == 0x03)
+ error = regmap_read(tsdata->regmap, FACTORY_REGISTER_OPMODE,
+ &val);
+ if (!error && val == 0x03)
break;
} while (--retries > 0);
@@ -568,12 +665,11 @@ static int edt_ft5x06_work_mode(struct edt_ft5x06_ts_data *tsdata)
{
struct i2c_client *client = tsdata->client;
int retries = EDT_SWITCH_MODE_RETRIES;
- struct edt_reg_addr *reg_addr = &tsdata->reg_addr;
- int ret;
+ unsigned int val;
int error;
/* mode register is 0x01 when in the factory mode */
- error = edt_ft5x06_register_write(tsdata, FACTORY_REGISTER_OPMODE, 0x1);
+ error = regmap_write(tsdata->regmap, FACTORY_REGISTER_OPMODE, 0x1);
if (error) {
dev_err(&client->dev,
"failed to switch to work mode, error: %d\n", error);
@@ -585,8 +681,8 @@ static int edt_ft5x06_work_mode(struct edt_ft5x06_ts_data *tsdata)
do {
mdelay(EDT_SWITCH_MODE_DELAY);
/* mode register is 0x01 when in factory mode */
- ret = edt_ft5x06_register_read(tsdata, WORK_REGISTER_OPMODE);
- if (ret == 0x01)
+ error = regmap_read(tsdata->regmap, WORK_REGISTER_OPMODE, &val);
+ if (!error && val == 0x01)
break;
} while (--retries > 0);
@@ -600,17 +696,7 @@ static int edt_ft5x06_work_mode(struct edt_ft5x06_ts_data *tsdata)
kfree(tsdata->raw_buffer);
tsdata->raw_buffer = NULL;
- /* restore parameters */
- edt_ft5x06_register_write(tsdata, reg_addr->reg_threshold,
- tsdata->threshold);
- edt_ft5x06_register_write(tsdata, reg_addr->reg_gain,
- tsdata->gain);
- edt_ft5x06_register_write(tsdata, reg_addr->reg_offset,
- tsdata->offset);
- if (reg_addr->reg_report_rate != NO_REGISTER)
- edt_ft5x06_register_write(tsdata, reg_addr->reg_report_rate,
- tsdata->report_rate);
-
+ edt_ft5x06_restore_reg_parameters(tsdata);
enable_irq(client->irq);
return 0;
@@ -649,15 +735,16 @@ DEFINE_SIMPLE_ATTRIBUTE(debugfs_mode_fops, edt_ft5x06_debugfs_mode_get,
edt_ft5x06_debugfs_mode_set, "%llu\n");
static ssize_t edt_ft5x06_debugfs_raw_data_read(struct file *file,
- char __user *buf, size_t count, loff_t *off)
+ char __user *buf, size_t count,
+ loff_t *off)
{
struct edt_ft5x06_ts_data *tsdata = file->private_data;
struct i2c_client *client = tsdata->client;
int retries = EDT_RAW_DATA_RETRIES;
- int val, i, error;
+ unsigned int val;
+ int i, error;
size_t read = 0;
int colbytes;
- char wrbuf[3];
u8 *rdbuf;
if (*off < 0 || *off >= tsdata->raw_bufsize)
@@ -670,29 +757,29 @@ static ssize_t edt_ft5x06_debugfs_raw_data_read(struct file *file,
goto out;
}
- error = edt_ft5x06_register_write(tsdata, 0x08, 0x01);
+ error = regmap_write(tsdata->regmap, 0x08, 0x01);
if (error) {
- dev_dbg(&client->dev,
+ dev_err(&client->dev,
"failed to write 0x08 register, error %d\n", error);
goto out;
}
do {
usleep_range(EDT_RAW_DATA_DELAY, EDT_RAW_DATA_DELAY + 100);
- val = edt_ft5x06_register_read(tsdata, 0x08);
- if (val < 1)
+ error = regmap_read(tsdata->regmap, 0x08, &val);
+ if (error) {
+ dev_err(&client->dev,
+ "failed to read 0x08 register, error %d\n",
+ error);
+ goto out;
+ }
+
+ if (val == 1)
break;
} while (--retries > 0);
- if (val < 0) {
- error = val;
- dev_dbg(&client->dev,
- "failed to read 0x08 register, error %d\n", error);
- goto out;
- }
-
if (retries == 0) {
- dev_dbg(&client->dev,
+ dev_err(&client->dev,
"timed out waiting for register to settle\n");
error = -ETIMEDOUT;
goto out;
@@ -701,13 +788,9 @@ static ssize_t edt_ft5x06_debugfs_raw_data_read(struct file *file,
rdbuf = tsdata->raw_buffer;
colbytes = tsdata->num_y * sizeof(u16);
- wrbuf[0] = 0xf5;
- wrbuf[1] = 0x0e;
for (i = 0; i < tsdata->num_x; i++) {
- wrbuf[2] = i; /* column index */
- error = edt_ft5x06_ts_readwrite(tsdata->client,
- sizeof(wrbuf), wrbuf,
- colbytes, rdbuf);
+ rdbuf[0] = i; /* column index */
+ error = regmap_bulk_read(tsdata->regmap, 0xf5, rdbuf, colbytes);
if (error)
goto out;
@@ -731,61 +814,56 @@ static const struct file_operations debugfs_raw_data_fops = {
.read = edt_ft5x06_debugfs_raw_data_read,
};
-static void
-edt_ft5x06_ts_prepare_debugfs(struct edt_ft5x06_ts_data *tsdata,
- const char *debugfs_name)
+static void edt_ft5x06_ts_prepare_debugfs(struct edt_ft5x06_ts_data *tsdata)
{
- tsdata->debug_dir = debugfs_create_dir(debugfs_name, NULL);
- if (!tsdata->debug_dir)
- return;
+ struct dentry *debug_dir = tsdata->client->debugfs;
- debugfs_create_u16("num_x", S_IRUSR, tsdata->debug_dir, &tsdata->num_x);
- debugfs_create_u16("num_y", S_IRUSR, tsdata->debug_dir, &tsdata->num_y);
+ debugfs_create_u16("num_x", S_IRUSR, debug_dir, &tsdata->num_x);
+ debugfs_create_u16("num_y", S_IRUSR, debug_dir, &tsdata->num_y);
debugfs_create_file("mode", S_IRUSR | S_IWUSR,
- tsdata->debug_dir, tsdata, &debugfs_mode_fops);
+ debug_dir, tsdata, &debugfs_mode_fops);
debugfs_create_file("raw_data", S_IRUSR,
- tsdata->debug_dir, tsdata, &debugfs_raw_data_fops);
+ debug_dir, tsdata, &debugfs_raw_data_fops);
}
-static void
-edt_ft5x06_ts_teardown_debugfs(struct edt_ft5x06_ts_data *tsdata)
+static void edt_ft5x06_ts_teardown_debugfs(struct edt_ft5x06_ts_data *tsdata)
{
- debugfs_remove_recursive(tsdata->debug_dir);
kfree(tsdata->raw_buffer);
}
#else
-static inline void
-edt_ft5x06_ts_prepare_debugfs(struct edt_ft5x06_ts_data *tsdata,
- const char *debugfs_name)
+static int edt_ft5x06_factory_mode(struct edt_ft5x06_ts_data *tsdata)
+{
+ return -ENOSYS;
+}
+
+static void edt_ft5x06_ts_prepare_debugfs(struct edt_ft5x06_ts_data *tsdata)
{
}
-static inline void
-edt_ft5x06_ts_teardown_debugfs(struct edt_ft5x06_ts_data *tsdata)
+static void edt_ft5x06_ts_teardown_debugfs(struct edt_ft5x06_ts_data *tsdata)
{
}
#endif /* CONFIG_DEBUGFS */
static int edt_ft5x06_ts_identify(struct i2c_client *client,
- struct edt_ft5x06_ts_data *tsdata,
- char *fw_version)
+ struct edt_ft5x06_ts_data *tsdata)
{
u8 rdbuf[EDT_NAME_LEN];
char *p;
int error;
char *model_name = tsdata->name;
+ char *fw_version = tsdata->fw_version;
/* see what we find if we assume it is a M06 *
* if we get less than EDT_NAME_LEN, we don't want
* to have garbage in there
*/
memset(rdbuf, 0, sizeof(rdbuf));
- error = edt_ft5x06_ts_readwrite(client, 1, "\xBB",
- EDT_NAME_LEN - 1, rdbuf);
+ error = regmap_bulk_read(tsdata->regmap, 0xBB, rdbuf, EDT_NAME_LEN - 1);
if (error)
return error;
@@ -805,8 +883,16 @@ static int edt_ft5x06_ts_identify(struct i2c_client *client,
p = strchr(rdbuf, '*');
if (p)
*p++ = '\0';
- strlcpy(model_name, rdbuf + 1, EDT_NAME_LEN);
- strlcpy(fw_version, p ? p : "", EDT_NAME_LEN);
+ strscpy(model_name, rdbuf + 1, EDT_NAME_LEN);
+ strscpy(fw_version, p ? p : "", EDT_NAME_LEN);
+
+ regmap_exit(tsdata->regmap);
+ tsdata->regmap = regmap_init_i2c(client,
+ &edt_M06_i2c_regmap_config);
+ if (IS_ERR(tsdata->regmap)) {
+ dev_err(&client->dev, "regmap allocation failed\n");
+ return PTR_ERR(tsdata->regmap);
+ }
} else if (!strncasecmp(rdbuf, "EP0", 3)) {
tsdata->version = EDT_M12;
@@ -819,12 +905,12 @@ static int edt_ft5x06_ts_identify(struct i2c_client *client,
p = strchr(rdbuf, '*');
if (p)
*p++ = '\0';
- strlcpy(model_name, rdbuf, EDT_NAME_LEN);
- strlcpy(fw_version, p ? p : "", EDT_NAME_LEN);
+ strscpy(model_name, rdbuf, EDT_NAME_LEN);
+ strscpy(fw_version, p ? p : "", EDT_NAME_LEN);
} else {
/* If it is not an EDT M06/M12 touchscreen, then the model
* detection is a bit hairy. The different ft5x06
- * firmares around don't reliably implement the
+ * firmwares around don't reliably implement the
* identification registers. Well, we'll take a shot.
*
* The main difference between generic focaltec based
@@ -833,15 +919,13 @@ static int edt_ft5x06_ts_identify(struct i2c_client *client,
*/
tsdata->version = GENERIC_FT;
- error = edt_ft5x06_ts_readwrite(client, 1, "\xA6",
- 2, rdbuf);
+ error = regmap_bulk_read(tsdata->regmap, 0xA6, rdbuf, 2);
if (error)
return error;
- strlcpy(fw_version, rdbuf, 2);
+ strscpy(fw_version, rdbuf, 2);
- error = edt_ft5x06_ts_readwrite(client, 1, "\xA8",
- 1, rdbuf);
+ error = regmap_bulk_read(tsdata->regmap, 0xA8, rdbuf, 1);
if (error)
return error;
@@ -850,6 +934,7 @@ static int edt_ft5x06_ts_identify(struct i2c_client *client,
* the identification registers.
*/
switch (rdbuf[0]) {
+ case 0x11: /* EDT EP0110M09 */
case 0x35: /* EDT EP0350M09 */
case 0x43: /* EDT EP0430M09 */
case 0x50: /* EDT EP0500M09 */
@@ -857,16 +942,25 @@ static int edt_ft5x06_ts_identify(struct i2c_client *client,
case 0x70: /* EDT EP0700M09 */
tsdata->version = EDT_M09;
snprintf(model_name, EDT_NAME_LEN, "EP0%i%i0M09",
- rdbuf[0] >> 4, rdbuf[0] & 0x0F);
+ rdbuf[0] >> 4, rdbuf[0] & 0x0F);
break;
case 0xa1: /* EDT EP1010ML00 */
tsdata->version = EDT_M09;
snprintf(model_name, EDT_NAME_LEN, "EP%i%i0ML00",
- rdbuf[0] >> 4, rdbuf[0] & 0x0F);
+ rdbuf[0] >> 4, rdbuf[0] & 0x0F);
break;
case 0x5a: /* Solomon Goldentek Display */
snprintf(model_name, EDT_NAME_LEN, "GKTW50SCED1R0");
break;
+ case 0x59: /* Evervision Display with FT5xx6 TS */
+ tsdata->version = EV_FT;
+ error = regmap_bulk_read(tsdata->regmap, 0x53, rdbuf, 1);
+ if (error)
+ return error;
+ strscpy(fw_version, rdbuf, 1);
+ snprintf(model_name, EDT_NAME_LEN,
+ "EVERVISION-FT5726NEi");
+ break;
default:
snprintf(model_name, EDT_NAME_LEN,
"generic ft5x06 (%02x)",
@@ -882,55 +976,94 @@ 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;
+ struct regmap *regmap = tsdata->regmap;
u32 val;
int error;
error = device_property_read_u32(dev, "threshold", &val);
if (!error) {
- edt_ft5x06_register_write(tsdata, reg_addr->reg_threshold, val);
+ regmap_write(regmap, reg_addr->reg_threshold, val);
tsdata->threshold = val;
}
error = device_property_read_u32(dev, "gain", &val);
if (!error) {
- edt_ft5x06_register_write(tsdata, reg_addr->reg_gain, val);
+ regmap_write(regmap, reg_addr->reg_gain, val);
tsdata->gain = val;
}
error = device_property_read_u32(dev, "offset", &val);
if (!error) {
- edt_ft5x06_register_write(tsdata, reg_addr->reg_offset, val);
+ if (reg_addr->reg_offset != NO_REGISTER)
+ regmap_write(regmap, reg_addr->reg_offset, val);
tsdata->offset = val;
}
+
+ error = device_property_read_u32(dev, "offset-x", &val);
+ if (!error) {
+ if (reg_addr->reg_offset_x != NO_REGISTER)
+ regmap_write(regmap, reg_addr->reg_offset_x, val);
+ tsdata->offset_x = val;
+ }
+
+ error = device_property_read_u32(dev, "offset-y", &val);
+ if (!error) {
+ if (reg_addr->reg_offset_y != NO_REGISTER)
+ regmap_write(regmap, reg_addr->reg_offset_y, val);
+ tsdata->offset_y = val;
+ }
}
-static void
-edt_ft5x06_ts_get_parameters(struct edt_ft5x06_ts_data *tsdata)
+static void edt_ft5x06_ts_get_parameters(struct edt_ft5x06_ts_data *tsdata)
{
struct edt_reg_addr *reg_addr = &tsdata->reg_addr;
+ struct regmap *regmap = tsdata->regmap;
+ unsigned int val;
- tsdata->threshold = edt_ft5x06_register_read(tsdata,
- reg_addr->reg_threshold);
- tsdata->gain = edt_ft5x06_register_read(tsdata, reg_addr->reg_gain);
- tsdata->offset = edt_ft5x06_register_read(tsdata, reg_addr->reg_offset);
+ regmap_read(regmap, reg_addr->reg_threshold, &tsdata->threshold);
+ regmap_read(regmap, reg_addr->reg_gain, &tsdata->gain);
+ if (reg_addr->reg_offset != NO_REGISTER)
+ regmap_read(regmap, reg_addr->reg_offset, &tsdata->offset);
+ if (reg_addr->reg_offset_x != NO_REGISTER)
+ regmap_read(regmap, reg_addr->reg_offset_x, &tsdata->offset_x);
+ if (reg_addr->reg_offset_y != NO_REGISTER)
+ regmap_read(regmap, reg_addr->reg_offset_y, &tsdata->offset_y);
if (reg_addr->reg_report_rate != NO_REGISTER)
- tsdata->report_rate = edt_ft5x06_register_read(tsdata,
- reg_addr->reg_report_rate);
- if (tsdata->version == EDT_M06 ||
- tsdata->version == EDT_M09 ||
- tsdata->version == EDT_M12) {
- tsdata->num_x = edt_ft5x06_register_read(tsdata,
- reg_addr->reg_num_x);
- tsdata->num_y = edt_ft5x06_register_read(tsdata,
- reg_addr->reg_num_y);
+ regmap_read(regmap, reg_addr->reg_report_rate,
+ &tsdata->report_rate);
+ tsdata->num_x = EDT_DEFAULT_NUM_X;
+ if (reg_addr->reg_num_x != NO_REGISTER) {
+ if (!regmap_read(regmap, reg_addr->reg_num_x, &val))
+ tsdata->num_x = val;
+ }
+ tsdata->num_y = EDT_DEFAULT_NUM_Y;
+ if (reg_addr->reg_num_y != NO_REGISTER) {
+ if (!regmap_read(regmap, reg_addr->reg_num_y, &val))
+ tsdata->num_y = val;
+ }
+}
+
+static void edt_ft5x06_ts_set_tdata_parameters(struct edt_ft5x06_ts_data *tsdata)
+{
+ int crclen;
+
+ if (tsdata->version == EDT_M06) {
+ tsdata->tdata_cmd = 0xf9;
+ tsdata->tdata_offset = 5;
+ tsdata->point_len = 4;
+ crclen = 1;
} else {
- tsdata->num_x = -1;
- tsdata->num_y = -1;
+ tsdata->tdata_cmd = 0x0;
+ tsdata->tdata_offset = 3;
+ tsdata->point_len = 6;
+ crclen = 0;
}
+
+ tsdata->tdata_len = tsdata->point_len * tsdata->max_support_points +
+ tsdata->tdata_offset + crclen;
}
-static void
-edt_ft5x06_ts_set_regs(struct edt_ft5x06_ts_data *tsdata)
+static void edt_ft5x06_ts_set_regs(struct edt_ft5x06_ts_data *tsdata)
{
struct edt_reg_addr *reg_addr = &tsdata->reg_addr;
@@ -940,6 +1073,8 @@ edt_ft5x06_ts_set_regs(struct edt_ft5x06_ts_data *tsdata)
reg_addr->reg_report_rate = WORK_REGISTER_REPORT_RATE;
reg_addr->reg_gain = WORK_REGISTER_GAIN;
reg_addr->reg_offset = WORK_REGISTER_OFFSET;
+ reg_addr->reg_offset_x = NO_REGISTER;
+ reg_addr->reg_offset_y = NO_REGISTER;
reg_addr->reg_num_x = WORK_REGISTER_NUM_X;
reg_addr->reg_num_y = WORK_REGISTER_NUM_Y;
break;
@@ -947,31 +1082,67 @@ edt_ft5x06_ts_set_regs(struct edt_ft5x06_ts_data *tsdata)
case EDT_M09:
case EDT_M12:
reg_addr->reg_threshold = M09_REGISTER_THRESHOLD;
- reg_addr->reg_report_rate = NO_REGISTER;
+ reg_addr->reg_report_rate = tsdata->version == EDT_M12 ?
+ M12_REGISTER_REPORT_RATE : NO_REGISTER;
reg_addr->reg_gain = M09_REGISTER_GAIN;
reg_addr->reg_offset = M09_REGISTER_OFFSET;
+ reg_addr->reg_offset_x = NO_REGISTER;
+ reg_addr->reg_offset_y = NO_REGISTER;
reg_addr->reg_num_x = M09_REGISTER_NUM_X;
reg_addr->reg_num_y = M09_REGISTER_NUM_Y;
break;
+ case EV_FT:
+ reg_addr->reg_threshold = EV_REGISTER_THRESHOLD;
+ reg_addr->reg_report_rate = NO_REGISTER;
+ reg_addr->reg_gain = EV_REGISTER_GAIN;
+ reg_addr->reg_offset = NO_REGISTER;
+ reg_addr->reg_offset_x = EV_REGISTER_OFFSET_X;
+ reg_addr->reg_offset_y = EV_REGISTER_OFFSET_Y;
+ reg_addr->reg_num_x = NO_REGISTER;
+ reg_addr->reg_num_y = NO_REGISTER;
+ break;
+
case GENERIC_FT:
/* this is a guesswork */
reg_addr->reg_threshold = M09_REGISTER_THRESHOLD;
+ reg_addr->reg_report_rate = NO_REGISTER;
reg_addr->reg_gain = M09_REGISTER_GAIN;
reg_addr->reg_offset = M09_REGISTER_OFFSET;
+ reg_addr->reg_offset_x = NO_REGISTER;
+ reg_addr->reg_offset_y = NO_REGISTER;
+ reg_addr->reg_num_x = NO_REGISTER;
+ reg_addr->reg_num_y = NO_REGISTER;
break;
}
}
-static int edt_ft5x06_ts_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static void edt_ft5x06_exit_regmap(void *arg)
+{
+ struct edt_ft5x06_ts_data *data = arg;
+
+ if (!IS_ERR_OR_NULL(data->regmap))
+ regmap_exit(data->regmap);
+}
+
+static void edt_ft5x06_disable_regulators(void *arg)
+{
+ struct edt_ft5x06_ts_data *data = arg;
+
+ regulator_disable(data->vcc);
+ regulator_disable(data->iovcc);
+}
+
+static int edt_ft5x06_ts_probe(struct i2c_client *client)
{
+ const struct i2c_device_id *id = i2c_client_get_device_id(client);
const struct edt_i2c_chip_data *chip_data;
struct edt_ft5x06_ts_data *tsdata;
+ unsigned int val;
struct input_dev *input;
unsigned long irq_flags;
int error;
- char fw_version[EDT_NAME_LEN];
+ u32 report_rate;
dev_dbg(&client->dev, "probing for EDT FT5x06 I2C\n");
@@ -981,7 +1152,23 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client,
return -ENOMEM;
}
- chip_data = of_device_get_match_data(&client->dev);
+ tsdata->regmap = regmap_init_i2c(client, &edt_ft5x06_i2c_regmap_config);
+ if (IS_ERR(tsdata->regmap)) {
+ dev_err(&client->dev, "regmap allocation failed\n");
+ return PTR_ERR(tsdata->regmap);
+ }
+
+ /*
+ * We are not using devm_regmap_init_i2c() and instead install a
+ * custom action because we may replace regmap with M06-specific one
+ * and we need to make sure that it will not be released too early.
+ */
+ error = devm_add_action_or_reset(&client->dev, edt_ft5x06_exit_regmap,
+ tsdata);
+ if (error)
+ return error;
+
+ chip_data = 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) {
@@ -991,6 +1178,42 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client,
tsdata->max_support_points = chip_data->max_support_points;
+ tsdata->vcc = devm_regulator_get(&client->dev, "vcc");
+ if (IS_ERR(tsdata->vcc))
+ return dev_err_probe(&client->dev, PTR_ERR(tsdata->vcc),
+ "failed to request regulator\n");
+
+ tsdata->iovcc = devm_regulator_get(&client->dev, "iovcc");
+ if (IS_ERR(tsdata->iovcc)) {
+ error = PTR_ERR(tsdata->iovcc);
+ if (error != -EPROBE_DEFER)
+ dev_err(&client->dev,
+ "failed to request iovcc regulator: %d\n", error);
+ return error;
+ }
+
+ error = regulator_enable(tsdata->iovcc);
+ if (error < 0) {
+ dev_err(&client->dev, "failed to enable iovcc: %d\n", error);
+ return error;
+ }
+
+ /* Delay enabling VCC for > 10us (T_ivd) after IOVCC */
+ usleep_range(10, 100);
+
+ error = regulator_enable(tsdata->vcc);
+ if (error < 0) {
+ dev_err(&client->dev, "failed to enable vcc: %d\n", error);
+ regulator_disable(tsdata->iovcc);
+ return error;
+ }
+
+ error = devm_add_action_or_reset(&client->dev,
+ edt_ft5x06_disable_regulators,
+ tsdata);
+ if (error)
+ return error;
+
tsdata->reset_gpio = devm_gpiod_get_optional(&client->dev,
"reset", GPIOD_OUT_HIGH);
if (IS_ERR(tsdata->reset_gpio)) {
@@ -1009,9 +1232,23 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client,
return error;
}
+ /*
+ * Check which sleep modes we can support. Power-off requires the
+ * reset-pin to ensure correct power-down/power-up behaviour. Start with
+ * the EDT_PMODE_POWEROFF test since this is the deepest possible sleep
+ * mode.
+ */
+ if (tsdata->reset_gpio)
+ tsdata->suspend_mode = EDT_PMODE_POWEROFF;
+ else if (tsdata->wake_gpio)
+ tsdata->suspend_mode = EDT_PMODE_HIBERNATE;
+ else
+ tsdata->suspend_mode = EDT_PMODE_NOT_SUPPORTED;
+
if (tsdata->wake_gpio) {
usleep_range(5000, 6000);
gpiod_set_value_cansleep(tsdata->wake_gpio, 1);
+ usleep_range(5000, 6000);
}
if (tsdata->reset_gpio) {
@@ -1030,74 +1267,85 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client,
tsdata->client = client;
tsdata->input = input;
tsdata->factory_mode = false;
+ i2c_set_clientdata(client, tsdata);
- error = edt_ft5x06_ts_identify(client, tsdata, fw_version);
+ error = edt_ft5x06_ts_identify(client, tsdata);
if (error) {
dev_err(&client->dev, "touchscreen probe failed\n");
return error;
}
+ /*
+ * Dummy read access. EP0700MLP1 returns bogus data on the first
+ * register read access and ignores writes.
+ */
+ regmap_read(tsdata->regmap, 0x00, &val);
+
+ edt_ft5x06_ts_set_tdata_parameters(tsdata);
edt_ft5x06_ts_set_regs(tsdata);
edt_ft5x06_ts_get_defaults(&client->dev, tsdata);
edt_ft5x06_ts_get_parameters(tsdata);
+ if (tsdata->reg_addr.reg_report_rate != NO_REGISTER &&
+ !device_property_read_u32(&client->dev,
+ "report-rate-hz", &report_rate)) {
+ if (tsdata->version == EDT_M06)
+ tsdata->report_rate = clamp_val(report_rate, 30, 140);
+ else
+ tsdata->report_rate = clamp_val(report_rate, 1, 255);
+
+ if (report_rate != tsdata->report_rate)
+ dev_warn(&client->dev,
+ "report-rate %dHz is unsupported, use %dHz\n",
+ report_rate, tsdata->report_rate);
+
+ if (tsdata->version == EDT_M06)
+ tsdata->report_rate /= 10;
+
+ regmap_write(tsdata->regmap, tsdata->reg_addr.reg_report_rate,
+ tsdata->report_rate);
+ }
+
dev_dbg(&client->dev,
"Model \"%s\", Rev. \"%s\", %dx%d sensors\n",
- tsdata->name, fw_version, tsdata->num_x, tsdata->num_y);
+ tsdata->name, tsdata->fw_version, tsdata->num_x, tsdata->num_y);
input->name = tsdata->name;
input->id.bustype = BUS_I2C;
input->dev.parent = &client->dev;
- if (tsdata->version == EDT_M06 ||
- tsdata->version == EDT_M09 ||
- tsdata->version == EDT_M12) {
- input_set_abs_params(input, ABS_MT_POSITION_X,
- 0, tsdata->num_x * 64 - 1, 0, 0);
- input_set_abs_params(input, ABS_MT_POSITION_Y,
- 0, tsdata->num_y * 64 - 1, 0, 0);
- } else {
- /* Unknown maximum values. Specify via devicetree */
- input_set_abs_params(input, ABS_MT_POSITION_X,
- 0, 65535, 0, 0);
- input_set_abs_params(input, ABS_MT_POSITION_Y,
- 0, 65535, 0, 0);
- }
+ input_set_abs_params(input, ABS_MT_POSITION_X,
+ 0, tsdata->num_x * 64 - 1, 0, 0);
+ input_set_abs_params(input, ABS_MT_POSITION_Y,
+ 0, tsdata->num_y * 64 - 1, 0, 0);
touchscreen_parse_properties(input, true, &tsdata->prop);
error = input_mt_init_slots(input, tsdata->max_support_points,
- INPUT_MT_DIRECT);
+ INPUT_MT_DIRECT);
if (error) {
dev_err(&client->dev, "Unable to init MT slots.\n");
return error;
}
- i2c_set_clientdata(client, tsdata);
-
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);
+ NULL, edt_ft5x06_ts_isr, irq_flags,
+ client->name, tsdata);
if (error) {
dev_err(&client->dev, "Unable to request touchscreen IRQ.\n");
return error;
}
- error = devm_device_add_group(&client->dev, &edt_ft5x06_attr_group);
- if (error)
- return error;
-
error = input_register_device(input);
if (error)
return error;
- edt_ft5x06_ts_prepare_debugfs(tsdata, dev_driver_string(&client->dev));
- device_init_wakeup(&client->dev, 1);
+ edt_ft5x06_ts_prepare_debugfs(tsdata);
dev_dbg(&client->dev,
"EDT FT5x06 initialized: IRQ %d, WAKE pin %d, Reset pin %d.\n",
@@ -1108,42 +1356,129 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client,
return 0;
}
-static int edt_ft5x06_ts_remove(struct i2c_client *client)
+static void edt_ft5x06_ts_remove(struct i2c_client *client)
{
struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client);
edt_ft5x06_ts_teardown_debugfs(tsdata);
-
- return 0;
}
-static int __maybe_unused edt_ft5x06_ts_suspend(struct device *dev)
+static int edt_ft5x06_ts_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
+ struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client);
+ struct gpio_desc *reset_gpio = tsdata->reset_gpio;
+ int ret;
if (device_may_wakeup(dev))
- enable_irq_wake(client->irq);
+ return 0;
+
+ if (tsdata->suspend_mode == EDT_PMODE_NOT_SUPPORTED)
+ return 0;
+
+ /* Enter hibernate mode. */
+ ret = regmap_write(tsdata->regmap, PMOD_REGISTER_OPMODE,
+ PMOD_REGISTER_HIBERNATE);
+ if (ret)
+ dev_warn(dev, "Failed to set hibernate mode\n");
+
+ if (tsdata->suspend_mode == EDT_PMODE_HIBERNATE)
+ return 0;
+
+ /*
+ * Power-off according the datasheet. Cut the power may leaf the irq
+ * line in an undefined state depending on the host pull resistor
+ * settings. Disable the irq to avoid adjusting each host till the
+ * device is back in a full functional state.
+ */
+ disable_irq(tsdata->client->irq);
+
+ gpiod_set_value_cansleep(reset_gpio, 1);
+ usleep_range(1000, 2000);
+
+ ret = regulator_disable(tsdata->vcc);
+ if (ret)
+ dev_warn(dev, "Failed to disable vcc\n");
+ ret = regulator_disable(tsdata->iovcc);
+ if (ret)
+ dev_warn(dev, "Failed to disable iovcc\n");
return 0;
}
-static int __maybe_unused edt_ft5x06_ts_resume(struct device *dev)
+static int edt_ft5x06_ts_resume(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
+ struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client);
+ int ret = 0;
if (device_may_wakeup(dev))
- disable_irq_wake(client->irq);
+ return 0;
- return 0;
+ if (tsdata->suspend_mode == EDT_PMODE_NOT_SUPPORTED)
+ return 0;
+
+ if (tsdata->suspend_mode == EDT_PMODE_POWEROFF) {
+ struct gpio_desc *reset_gpio = tsdata->reset_gpio;
+
+ /*
+ * We can't check if the regulator is a dummy or a real
+ * regulator. So we need to specify the 5ms reset time (T_rst)
+ * here instead of the 100us T_rtp time. We also need to wait
+ * 300ms in case it was a real supply and the power was cutted
+ * of. Toggle the reset pin is also a way to exit the hibernate
+ * mode.
+ */
+ gpiod_set_value_cansleep(reset_gpio, 1);
+ usleep_range(5000, 6000);
+
+ ret = regulator_enable(tsdata->iovcc);
+ if (ret) {
+ dev_err(dev, "Failed to enable iovcc\n");
+ return ret;
+ }
+
+ /* Delay enabling VCC for > 10us (T_ivd) after IOVCC */
+ usleep_range(10, 100);
+
+ ret = regulator_enable(tsdata->vcc);
+ if (ret) {
+ dev_err(dev, "Failed to enable vcc\n");
+ regulator_disable(tsdata->iovcc);
+ return ret;
+ }
+
+ usleep_range(1000, 2000);
+ gpiod_set_value_cansleep(reset_gpio, 0);
+ msleep(300);
+
+ edt_ft5x06_restore_reg_parameters(tsdata);
+ enable_irq(tsdata->client->irq);
+
+ if (tsdata->factory_mode)
+ ret = edt_ft5x06_factory_mode(tsdata);
+ } else {
+ struct gpio_desc *wake_gpio = tsdata->wake_gpio;
+
+ gpiod_set_value_cansleep(wake_gpio, 0);
+ usleep_range(5000, 6000);
+ gpiod_set_value_cansleep(wake_gpio, 1);
+ }
+
+ return ret;
}
-static SIMPLE_DEV_PM_OPS(edt_ft5x06_ts_pm_ops,
- edt_ft5x06_ts_suspend, edt_ft5x06_ts_resume);
+static DEFINE_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_ft5452_data = {
+ .max_support_points = 5,
+};
+
static const struct edt_i2c_chip_data edt_ft5506_data = {
.max_support_points = 10,
};
@@ -1152,33 +1487,56 @@ static const struct edt_i2c_chip_data edt_ft6236_data = {
.max_support_points = 2,
};
+static const struct edt_i2c_chip_data edt_ft8201_data = {
+ .max_support_points = 10,
+};
+
+static const struct edt_i2c_chip_data edt_ft8716_data = {
+ .max_support_points = 10,
+};
+
+static const struct edt_i2c_chip_data edt_ft8719_data = {
+ .max_support_points = 10,
+};
+
static const struct i2c_device_id edt_ft5x06_ts_id[] = {
{ .name = "edt-ft5x06", .driver_data = (long)&edt_ft5x06_data },
{ .name = "edt-ft5506", .driver_data = (long)&edt_ft5506_data },
+ { .name = "ev-ft5726", .driver_data = (long)&edt_ft5506_data },
+ { .name = "ft5452", .driver_data = (long)&edt_ft5452_data },
/* Note no edt- prefix for compatibility with the ft6236.c driver */
{ .name = "ft6236", .driver_data = (long)&edt_ft6236_data },
+ { .name = "ft8201", .driver_data = (long)&edt_ft8201_data },
+ { .name = "ft8716", .driver_data = (long)&edt_ft8716_data },
+ { .name = "ft8719", .driver_data = (long)&edt_ft8719_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", .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 },
+ { .compatible = "evervision,ev-ft5726", .data = &edt_ft5506_data },
+ { .compatible = "focaltech,ft5426", .data = &edt_ft5506_data },
+ { .compatible = "focaltech,ft5452", .data = &edt_ft5452_data },
/* Note focaltech vendor prefix for compatibility with ft6236.c */
{ .compatible = "focaltech,ft6236", .data = &edt_ft6236_data },
+ { .compatible = "focaltech,ft8201", .data = &edt_ft8201_data },
+ { .compatible = "focaltech,ft8716", .data = &edt_ft8716_data },
+ { .compatible = "focaltech,ft8719", .data = &edt_ft8719_data },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, edt_ft5x06_of_match);
-#endif
static struct i2c_driver edt_ft5x06_ts_driver = {
.driver = {
.name = "edt_ft5x06",
- .of_match_table = of_match_ptr(edt_ft5x06_of_match),
- .pm = &edt_ft5x06_ts_pm_ops,
+ .dev_groups = edt_ft5x06_groups,
+ .of_match_table = edt_ft5x06_of_match,
+ .pm = pm_sleep_ptr(&edt_ft5x06_ts_pm_ops),
+ .probe_type = PROBE_PREFER_ASYNCHRONOUS,
},
.id_table = edt_ft5x06_ts_id,
.probe = edt_ft5x06_ts_probe,
@@ -1189,4 +1547,4 @@ module_i2c_driver(edt_ft5x06_ts_driver);
MODULE_AUTHOR("Simon Budig <simon.budig@kernelconcepts.de>");
MODULE_DESCRIPTION("EDT FT5x06 I2C Touchscreen Driver");
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("GPL v2");
generated by cgit (git 2.34.1) at 2025-12-26 18:44:07 +0000