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HID: playstation: report DualSense hardware and firmware version. 

Retrieve DualSense hardware and firmware information using a vendor
specific feature report. Report the data through sysfs and also
report using hid_info as there can be signficant differences between
versions.

Signed-off-by: Roderick Colenbrander <roderick.colenbrander@sony.com>
Reviewed-by: Barnabás Pőcze <pobrn@protonmail.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
This commit is contained in:
Roderick Colenbrander 2021-02-07 13:49:08 -08:00 committed by Benjamin Tissoires
parent 51151098d7
commit 0b25b55d34
1 changed files with 81 additions and 0 deletions
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81
drivers/hid/hid-playstation.c
View File

@ -34,6 +34,8 @@ struct ps_device {
int battery_status;
uint8_t mac_address[6]; /* Note: stored in little endian order. */
uint32_t hw_version;
uint32_t fw_version;
int (*parse_report)(struct ps_device *dev, struct hid_report *report, u8 *data, int size);
};
@ -64,6 +66,8 @@ struct ps_calibration_data {
#define DS_FEATURE_REPORT_CALIBRATION_SIZE 41
#define DS_FEATURE_REPORT_PAIRING_INFO 0x09
#define DS_FEATURE_REPORT_PAIRING_INFO_SIZE 20
#define DS_FEATURE_REPORT_FIRMWARE_INFO 0x20
#define DS_FEATURE_REPORT_FIRMWARE_INFO_SIZE 64
/* Button masks for DualSense input report. */
#define DS_BUTTONS0_HAT_SWITCH GENMASK(3, 0)
@ -538,6 +542,40 @@ static struct input_dev *ps_touchpad_create(struct hid_device *hdev, int width,
return touchpad;
}
static ssize_t firmware_version_show(struct device *dev,
struct device_attribute
*attr, char *buf)
{
struct hid_device *hdev = to_hid_device(dev);
struct ps_device *ps_dev = hid_get_drvdata(hdev);
return sysfs_emit(buf, "0x%08x\n", ps_dev->fw_version);
}
static DEVICE_ATTR_RO(firmware_version);
static ssize_t hardware_version_show(struct device *dev,
struct device_attribute
*attr, char *buf)
{
struct hid_device *hdev = to_hid_device(dev);
struct ps_device *ps_dev = hid_get_drvdata(hdev);
return sysfs_emit(buf, "0x%08x\n", ps_dev->hw_version);
}
static DEVICE_ATTR_RO(hardware_version);
static struct attribute *ps_device_attributes[] = {
&dev_attr_firmware_version.attr,
&dev_attr_hardware_version.attr,
NULL
};
static const struct attribute_group ps_device_attribute_group = {
.attrs = ps_device_attributes,
};
static int dualsense_get_calibration_data(struct dualsense *ds)
{
short gyro_pitch_bias, gyro_pitch_plus, gyro_pitch_minus;
@ -628,6 +666,30 @@ err_free:
return ret;
}
static int dualsense_get_firmware_info(struct dualsense *ds)
{
uint8_t *buf;
int ret;
buf = kzalloc(DS_FEATURE_REPORT_FIRMWARE_INFO_SIZE, GFP_KERNEL);
if (!buf)
return -ENOMEM;
ret = ps_get_report(ds->base.hdev, DS_FEATURE_REPORT_FIRMWARE_INFO, buf,
DS_FEATURE_REPORT_FIRMWARE_INFO_SIZE);
if (ret) {
hid_err(ds->base.hdev, "Failed to retrieve DualSense firmware info: %d\n", ret);
goto err_free;
}
ds->base.hw_version = get_unaligned_le32(&buf[24]);
ds->base.fw_version = get_unaligned_le32(&buf[28]);
err_free:
kfree(buf);
return ret;
}
static int dualsense_get_mac_address(struct dualsense *ds)
{
uint8_t *buf;
@ -956,6 +1018,12 @@ static struct ps_device *dualsense_create(struct hid_device *hdev)
}
snprintf(hdev->uniq, sizeof(hdev->uniq), "%pMR", ds->base.mac_address);
ret = dualsense_get_firmware_info(ds);
if (ret) {
hid_err(hdev, "Failed to get firmware info from DualSense\n");
return ERR_PTR(ret);
}
ret = ps_devices_list_add(ps_dev);
if (ret)
return ERR_PTR(ret);
@ -989,6 +1057,13 @@ static struct ps_device *dualsense_create(struct hid_device *hdev)
if (ret)
goto err;
/*
* Reporting hardware and firmware is important as there are frequent updates, which
* can change behavior.
*/
hid_info(hdev, "Registered DualSense controller hw_version=0x%08x fw_version=0x%08x\n",
ds->base.hw_version, ds->base.fw_version);
return &ds->base;
err:
@ -1039,6 +1114,12 @@ static int ps_probe(struct hid_device *hdev, const struct hid_device_id *id)
}
}
ret = devm_device_add_group(&hdev->dev, &ps_device_attribute_group);
if (ret) {
hid_err(hdev, "Failed to register sysfs nodes.\n");
goto err_close;
}
return ret;
err_close: