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Input: melfas_mip4 - add product_id sysfs attribute

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Add product_id sysfs attribute and update protocol version to support it.

Signed-off-by: Sangwon Jee <jeesw@melfas.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Sangwon Jee 2016-10-21 15:28:59 -07:00 committed by Dmitry Torokhov
parent 4a7126a25b
commit e2aad66638
1 changed files with 38 additions and 2 deletions
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40
drivers/input/touchscreen/melfas_mip4.c
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@ -33,7 +33,7 @@
/*****************************************************************
* Protocol
* Version : MIP 4.0 Rev 4.6
* Version : MIP 4.0 Rev 5.4
*****************************************************************/
/* Address */
@ -81,6 +81,9 @@
#define MIP4_R1_INFO_IC_HW_CATEGORY 0x77
#define MIP4_R1_INFO_CONTACT_THD_SCR 0x78
#define MIP4_R1_INFO_CONTACT_THD_KEY 0x7A
#define MIP4_R1_INFO_PID 0x7C
#define MIP4_R1_INFO_VID 0x7E
#define MIP4_R1_INFO_SLAVE_ADDR 0x80
#define MIP4_R0_EVENT 0x02
#define MIP4_R1_EVENT_SUPPORTED_FUNC 0x00
@ -157,6 +160,7 @@ struct mip4_ts {
char phys[32];
char product_name[16];
u16 product_id;
char ic_name[4];
unsigned int max_x;
@ -264,6 +268,18 @@ static int mip4_query_device(struct mip4_ts *ts)
dev_dbg(&ts->client->dev, "product name: %.*s\n",
(int)sizeof(ts->product_name), ts->product_name);
/* Product ID */
cmd[0] = MIP4_R0_INFO;
cmd[1] = MIP4_R1_INFO_PID;
error = mip4_i2c_xfer(ts, cmd, sizeof(cmd), buf, 2);
if (error) {
dev_warn(&ts->client->dev,
"Failed to retrieve product id: %d\n", error);
} else {
ts->product_id = get_unaligned_le16(&buf[0]);
dev_dbg(&ts->client->dev, "product id: %04X\n", ts->product_id);
}
/* IC name */
cmd[0] = MIP4_R0_INFO;
cmd[1] = MIP4_R1_INFO_IC_NAME;
@ -1348,6 +1364,25 @@ static ssize_t mip4_sysfs_read_hw_version(struct device *dev,
static DEVICE_ATTR(hw_version, S_IRUGO, mip4_sysfs_read_hw_version, NULL);
static ssize_t mip4_sysfs_read_product_id(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct i2c_client *client = to_i2c_client(dev);
struct mip4_ts *ts = i2c_get_clientdata(client);
size_t count;
mutex_lock(&ts->input->mutex);
count = snprintf(buf, PAGE_SIZE, "%04X\n", ts->product_id);
mutex_unlock(&ts->input->mutex);
return count;
}
static DEVICE_ATTR(product_id, S_IRUGO, mip4_sysfs_read_product_id, NULL);
static ssize_t mip4_sysfs_read_ic_name(struct device *dev,
struct device_attribute *attr,
char *buf)
@ -1371,6 +1406,7 @@ static DEVICE_ATTR(ic_name, S_IRUGO, mip4_sysfs_read_ic_name, NULL);
static struct attribute *mip4_attrs[] = {
&dev_attr_fw_version.attr,
&dev_attr_hw_version.attr,
&dev_attr_product_id.attr,
&dev_attr_ic_name.attr,
&dev_attr_update_fw.attr,
NULL,
@ -1572,6 +1608,6 @@ static struct i2c_driver mip4_driver = {
module_i2c_driver(mip4_driver);
MODULE_DESCRIPTION("MELFAS MIP4 Touchscreen");
MODULE_VERSION("2016.09.28");
MODULE_VERSION("2016.10.20");
MODULE_AUTHOR("Sangwon Jee <jeesw@melfas.com>");
MODULE_LICENSE("GPL");