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focaltech_0_flash_mmi: Add touch class sys entries

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Add touchscreen class sys entries.
Those entries contains IC info, which is used by FW upload
and CQA test.

Change-Id: Ie599eb3974ebc0e1ff8df1b14e25acc9b52172a6
Signed-off-by: haojl2 <haojl2@motorola.com>
Reviewed-on: https://gerrit.mot.com/1342368
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Jianqi Yang <yangj@motorola.com>
Submit-Approved: Jira Key
Reviewed-on: https://gerrit.mot.com/1356395
This commit is contained in:
haojl2 2019-04-25 09:57:51 +08:00 • committed by Jialei Hao
commit 5eeb5c0464
1 changed files with 110 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

112
drivers/input/touchscreen/focaltech_0flash_mmi/focaltech_ex_fun.c
View file

@ -1123,6 +1123,108 @@ static struct attribute_group fts_attribute_group = {
.attrs = fts_attributes
};
#include <linux/major.h>
#include <linux/kdev_t.h>
/* Attribute: path (RO) */
static ssize_t path_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct fts_ts_data *data = dev_get_drvdata(dev);
ssize_t blen;
const char *path;
if (!data) {
pr_err("cannot get fts_ts_data pointer\n");
return (ssize_t)0;
}
path = kobject_get_path(&data->spi->dev.kobj, GFP_KERNEL);
blen = scnprintf(buf, PAGE_SIZE, "%s", path ? path : "na");
kfree(path);
return blen;
}
/* Attribute: vendor (RO) */
static ssize_t vendor_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "focaltech");
}
static struct device_attribute touchscreen_attributes[] = {
__ATTR_RO(path),
__ATTR_RO(vendor),
__ATTR_NULL
};
#define TSDEV_MINOR_BASE 128
#define TSDEV_MINOR_MAX 32
static int fts_sysfs_class(void *_data, bool create)
{
struct fts_ts_data *data = _data;
struct device_attribute *attrs = touchscreen_attributes;
int i, error = 0;
static struct class *touchscreen_class;
static struct device *ts_class_dev;
static int minor;
if (create) {
minor = input_get_new_minor(data->spi->chip_select,
1, false);
if (minor < 0)
minor = input_get_new_minor(TSDEV_MINOR_BASE,
TSDEV_MINOR_MAX, true);
pr_info("assigned minor %d\n", minor);
touchscreen_class = class_create(THIS_MODULE, "touchscreen");
if (IS_ERR(touchscreen_class)) {
error = PTR_ERR(touchscreen_class);
touchscreen_class = NULL;
return error;
}
ts_class_dev = device_create(touchscreen_class, NULL,
MKDEV(INPUT_MAJOR, minor),
data, FTS_CHIP_NAME);
if (IS_ERR(ts_class_dev)) {
error = PTR_ERR(ts_class_dev);
ts_class_dev = NULL;
return error;
}
for (i = 0; attrs[i].attr.name != NULL; ++i) {
error = device_create_file(ts_class_dev, &attrs[i]);
if (error)
break;
}
if (error)
goto device_destroy;
} else {
if (!touchscreen_class || !ts_class_dev)
return -ENODEV;
for (i = 0; attrs[i].attr.name != NULL; ++i)
device_remove_file(ts_class_dev, &attrs[i]);
device_unregister(ts_class_dev);
class_unregister(touchscreen_class);
}
return 0;
device_destroy:
for (--i; i >= 0; --i)
device_remove_file(ts_class_dev, &attrs[i]);
device_destroy(touchscreen_class, MKDEV(INPUT_MAJOR, minor));
ts_class_dev = NULL;
class_unregister(touchscreen_class);
pr_err("error creating touchscreen class\n");
return -ENODEV;
}
int fts_create_sysfs(struct fts_ts_data *ts_data)
{
int ret = 0;
@ -1132,9 +1234,14 @@ int fts_create_sysfs(struct fts_ts_data *ts_data)
FTS_ERROR("[EX]: sysfs_create_group() failed!!");
sysfs_remove_group(&ts_data->dev->kobj, &fts_attribute_group);
return -ENOMEM;
} else {
FTS_INFO("[EX]: sysfs_create_group() succeeded!!");
}
ret = fts_sysfs_class(ts_data, true);
if (ret) {
FTS_ERROR("[EX]: fts_sysfs_class() failed!!");
sysfs_remove_group(&ts_data->dev->kobj, &fts_attribute_group);
return -ENOMEM;
}
FTS_INFO("[EX]: sysfs_create_group() succeeded!!");
return ret;
}
@ -1142,5 +1249,6 @@ int fts_create_sysfs(struct fts_ts_data *ts_data)
int fts_remove_sysfs(struct fts_ts_data *ts_data)
{
sysfs_remove_group(&ts_data->dev->kobj, &fts_attribute_group);
fts_sysfs_class(ts_data, false);
return 0;
}