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Diffstat (limited to 'drivers/hid/hid-logitech-hidpp.c')
-rw-r--r--drivers/hid/hid-logitech-hidpp.c81
1 files changed, 55 insertions, 26 deletions
diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c
index a93cefe0e52..e77658cd037 100644
--- a/drivers/hid/hid-logitech-hidpp.c
+++ b/drivers/hid/hid-logitech-hidpp.c
@@ -89,6 +89,7 @@ struct hidpp_device {
struct hid_device *hid_dev;
struct mutex send_mutex;
void *send_receive_buf;
+ char *name; /* will never be NULL and should not be freed */
wait_queue_head_t wait;
bool answer_available;
u8 protocol_major;
@@ -105,6 +106,7 @@ struct hidpp_device {
};
+/* HID++ 1.0 error codes */
#define HIDPP_ERROR 0x8f
#define HIDPP_ERROR_SUCCESS 0x00
#define HIDPP_ERROR_INVALID_SUBID 0x01
@@ -119,6 +121,8 @@ struct hidpp_device {
#define HIDPP_ERROR_REQUEST_UNAVAILABLE 0x0a
#define HIDPP_ERROR_INVALID_PARAM_VALUE 0x0b
#define HIDPP_ERROR_WRONG_PIN_CODE 0x0c
+/* HID++ 2.0 error codes */
+#define HIDPP20_ERROR 0xff
static void hidpp_connect_event(struct hidpp_device *hidpp_dev);
@@ -192,9 +196,16 @@ static int hidpp_send_message_sync(struct hidpp_device *hidpp,
}
if (response->report_id == REPORT_ID_HIDPP_SHORT &&
- response->fap.feature_index == HIDPP_ERROR) {
+ response->rap.sub_id == HIDPP_ERROR) {
+ ret = response->rap.params[1];
+ dbg_hid("%s:got hidpp error %02X\n", __func__, ret);
+ goto exit;
+ }
+
+ if (response->report_id == REPORT_ID_HIDPP_LONG &&
+ response->fap.feature_index == HIDPP20_ERROR) {
ret = response->fap.params[1];
- dbg_hid("__hidpp_send_report got hidpp error %02X\n", ret);
+ dbg_hid("%s:got hidpp 2.0 error %02X\n", __func__, ret);
goto exit;
}
@@ -271,7 +282,8 @@ static inline bool hidpp_match_answer(struct hidpp_report *question,
static inline bool hidpp_match_error(struct hidpp_report *question,
struct hidpp_report *answer)
{
- return (answer->fap.feature_index == HIDPP_ERROR) &&
+ return ((answer->rap.sub_id == HIDPP_ERROR) ||
+ (answer->fap.feature_index == HIDPP20_ERROR)) &&
(answer->fap.funcindex_clientid == question->fap.feature_index) &&
(answer->fap.params[0] == question->fap.funcindex_clientid);
}
@@ -903,24 +915,24 @@ static int wtp_allocate(struct hid_device *hdev, const struct hid_device_id *id)
return 0;
};
-static void wtp_connect(struct hid_device *hdev, bool connected)
+static int wtp_connect(struct hid_device *hdev, bool connected)
{
struct hidpp_device *hidpp = hid_get_drvdata(hdev);
struct wtp_data *wd = hidpp->private_data;
int ret;
if (!connected)
- return;
+ return 0;
if (!wd->x_size) {
ret = wtp_get_config(hidpp);
if (ret) {
hid_err(hdev, "Can not get wtp config: %d\n", ret);
- return;
+ return ret;
}
}
- hidpp_touchpad_set_raw_report_state(hidpp, wd->mt_feature_index,
+ return hidpp_touchpad_set_raw_report_state(hidpp, wd->mt_feature_index,
true, true);
}
@@ -965,7 +977,7 @@ static int hidpp_raw_hidpp_event(struct hidpp_device *hidpp, u8 *data,
/*
* If the mutex is locked then we have a pending answer from a
- * previoulsly sent command
+ * previously sent command.
*/
if (unlikely(mutex_is_locked(&hidpp->send_mutex))) {
/*
@@ -996,9 +1008,6 @@ static int hidpp_raw_hidpp_event(struct hidpp_device *hidpp, u8 *data,
return 1;
}
- if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)
- return wtp_raw_event(hidpp->hid_dev, data, size);
-
return 0;
}
@@ -1006,7 +1015,9 @@ static int hidpp_raw_event(struct hid_device *hdev, struct hid_report *report,
u8 *data, int size)
{
struct hidpp_device *hidpp = hid_get_drvdata(hdev);
+ int ret = 0;
+ /* Generic HID++ processing. */
switch (data[0]) {
case REPORT_ID_HIDPP_LONG:
if (size != HIDPP_REPORT_LONG_LENGTH) {
@@ -1014,16 +1025,23 @@ static int hidpp_raw_event(struct hid_device *hdev, struct hid_report *report,
size);
return 1;
}
- return hidpp_raw_hidpp_event(hidpp, data, size);
+ ret = hidpp_raw_hidpp_event(hidpp, data, size);
+ break;
case REPORT_ID_HIDPP_SHORT:
if (size != HIDPP_REPORT_SHORT_LENGTH) {
hid_err(hdev, "received hid++ report of bad size (%d)",
size);
return 1;
}
- return hidpp_raw_hidpp_event(hidpp, data, size);
+ ret = hidpp_raw_hidpp_event(hidpp, data, size);
+ break;
}
+ /* If no report is available for further processing, skip calling
+ * raw_event of subclasses. */
+ if (ret != 0)
+ return ret;
+
if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)
return wtp_raw_event(hdev, data, size);
@@ -1070,6 +1088,7 @@ static void hidpp_input_close(struct input_dev *dev)
static struct input_dev *hidpp_allocate_input(struct hid_device *hdev)
{
struct input_dev *input_dev = devm_input_allocate_device(&hdev->dev);
+ struct hidpp_device *hidpp = hid_get_drvdata(hdev);
if (!input_dev)
return NULL;
@@ -1078,7 +1097,7 @@ static struct input_dev *hidpp_allocate_input(struct hid_device *hdev)
input_dev->open = hidpp_input_open;
input_dev->close = hidpp_input_close;
- input_dev->name = hdev->name;
+ input_dev->name = hidpp->name;
input_dev->phys = hdev->phys;
input_dev->uniq = hdev->uniq;
input_dev->id.bustype = hdev->bus;
@@ -1098,8 +1117,11 @@ static void hidpp_connect_event(struct hidpp_device *hidpp)
struct input_dev *input;
char *name, *devm_name;
- if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)
- wtp_connect(hdev, connected);
+ if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) {
+ ret = wtp_connect(hdev, connected);
+ if (ret)
+ return;
+ }
if (!connected || hidpp->delayed_input)
return;
@@ -1117,22 +1139,28 @@ static void hidpp_connect_event(struct hidpp_device *hidpp)
hid_info(hdev, "HID++ %u.%u device connected.\n",
hidpp->protocol_major, hidpp->protocol_minor);
+ if (!hidpp->name || hidpp->name == hdev->name) {
+ name = hidpp_get_device_name(hidpp);
+ if (!name) {
+ hid_err(hdev,
+ "unable to retrieve the name of the device");
+ return;
+ }
+
+ devm_name = devm_kasprintf(&hdev->dev, GFP_KERNEL, "%s", name);
+ kfree(name);
+ if (!devm_name)
+ return;
+
+ hidpp->name = devm_name;
+ }
+
input = hidpp_allocate_input(hdev);
if (!input) {
hid_err(hdev, "cannot allocate new input device: %d\n", ret);
return;
}
- name = hidpp_get_device_name(hidpp);
- if (!name) {
- hid_err(hdev, "unable to retrieve the name of the device");
- } else {
- devm_name = devm_kasprintf(&hdev->dev, GFP_KERNEL, "%s", name);
- if (devm_name)
- input->name = devm_name;
- kfree(name);
- }
-
hidpp_populate_input(hidpp, input, false);
ret = input_register_device(input);
@@ -1155,6 +1183,7 @@ static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id)
return -ENOMEM;
hidpp->hid_dev = hdev;
+ hidpp->name = hdev->name;
hid_set_drvdata(hdev, hidpp);
hidpp->quirks = id->driver_data;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-03 17:28:30 +0000