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input: ets_fpc_mmi: Add vendor sys entry

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Add a sys entry in /sys/class/fingerprint/*/vendor
This sys entry can show vender name of current installed fps..

Change-Id: I608bac2fd2dfc6eb22cb105150b502c24360503c
Signed-off-by: haojl2 <haojl2@motorola.com>
Reviewed-on: https://gerrit.mot.com/1320504
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Jianqi Yang <yangj@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
haojl2 2019-03-14 17:59:59 +08:00 • committed by Jialei Hao
commit fe3668cdff
1 changed files with 81 additions and 0 deletions
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81
drivers/input/misc/ets_fps_mmi/ets_fps.c
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@ -761,6 +761,77 @@ static struct platform_driver etspi_driver = {
/* remark for dual sensors */
/* module_platform_driver(etspi_driver); */
/* Attribute: vendor (RO) */
static ssize_t vendor_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "egis");
}
static DEVICE_ATTR_RO(vendor);
static struct attribute *class_attributes[] = {
&dev_attr_vendor.attr,
NULL
};
static const struct attribute_group class_attribute_group = {
.attrs = class_attributes,
};
#define MAX_INSTANCE 5
#define MAJOR_BASE 32
static int etspi_create_sysfs(struct etspi_data *etspi, bool create) {
struct device *dev = &etspi->spi->dev;
static struct device *class_dev;
static struct class *fingerprint_class;
static dev_t dev_no;
int rc = 0;
if (create) {
rc = alloc_chrdev_region(&dev_no, MAJOR_BASE, MAX_INSTANCE, "egis");
if (rc < 0) {
dev_err(dev, "%s alloc fingerprint class device MAJOR failed.\n", __func__);
goto ALLOC_REGION;
}
if (!fingerprint_class) {
fingerprint_class = class_create(THIS_MODULE, "fingerprint");
if (IS_ERR(fingerprint_class)) {
dev_err(dev, "%s create fingerprint class failed.\n", __func__);
rc = PTR_ERR(fingerprint_class);
fingerprint_class = NULL;
goto CLASS_CREATE_ERR;
}
}
class_dev = device_create(fingerprint_class, NULL, MAJOR(dev_no),
etspi, etspi_driver.driver.name);
if (IS_ERR(class_dev)) {
dev_err(dev, "%s create fingerprint class device failed.\n", __func__);
rc = PTR_ERR(class_dev);
class_dev = NULL;
goto DEVICE_CREATE_ERR;
}
rc = sysfs_create_group(&class_dev->kobj, &class_attribute_group);
if (rc) {
dev_err(dev, "could not create sysfs\n");
goto CREATE_SYSFS_ERR;
}
return 0;
}
sysfs_remove_group(&class_dev->kobj, &class_attribute_group);
CREATE_SYSFS_ERR:
device_destroy(fingerprint_class, MAJOR(dev_no));
class_dev = NULL;
DEVICE_CREATE_ERR:
class_destroy(fingerprint_class);
fingerprint_class = NULL;
CLASS_CREATE_ERR:
unregister_chrdev_region(dev_no, 1);
ALLOC_REGION:
return rc;
}
static int etspi_create_device(struct etspi_data *etspi, bool create) {
static struct class *etspi_class;
static struct device *fdev;
@ -834,6 +905,7 @@ static int etspi_remove(struct platform_device *pdev)
struct etspi_data *etspi = dev_get_drvdata(dev);
DEBUG_PRINT("%s(#%d)\n", __func__, __LINE__);
etspi_create_sysfs(etspi, false);
sysfs_remove_group(&dev->kobj, &attribute_group);
wake_lock_destroy(&ets_wake_lock);
del_timer_sync(&fps_ints.timer);
@ -918,8 +990,17 @@ static int etspi_probe(struct platform_device *pdev)
pr_err("%s could not create sysfs\n", __func__);
goto etspi_create_group_failed;
}
status = etspi_create_sysfs(etspi, true);
if (status) {
pr_err("%s could not create sysfs\n", __func__);
goto etspi_sysfs_failed;
}
return status;
etspi_sysfs_failed:
sysfs_remove_group(&dev->kobj, &attribute_group);
etspi_create_group_failed:
wake_lock_destroy(&ets_wake_lock);
del_timer_sync(&fps_ints.timer);