diff options
| -rw-r--r-- | drivers/hid/hid-rmi.c | 36 |
1 files changed, 32 insertions, 4 deletions
diff --git a/drivers/hid/hid-rmi.c b/drivers/hid/hid-rmi.c index 7da9509894de..eda7ef41c291 100644 --- a/drivers/hid/hid-rmi.c +++ b/drivers/hid/hid-rmi.c @@ -546,9 +546,13 @@ static int rmi_populate_f11(struct hid_device *hdev) struct rmi_data *data = hid_get_drvdata(hdev); u8 buf[20]; int ret; + bool has_query9; + bool has_query10; + bool has_query11; bool has_query12; bool has_physical_props; unsigned x_size, y_size; + u16 query12_offset; if (!data->f11.query_base_addr) { hid_err(hdev, "No 2D sensor found, giving up.\n"); @@ -561,6 +565,8 @@ static int rmi_populate_f11(struct hid_device *hdev) hid_err(hdev, "can not get query 0: %d.\n", ret); return ret; } + has_query9 = !!(buf[0] & BIT(3)); + has_query11 = !!(buf[0] & BIT(4)); has_query12 = !!(buf[0] & BIT(5)); /* query 1 to get the max number of fingers */ @@ -581,12 +587,33 @@ static int rmi_populate_f11(struct hid_device *hdev) return -ENODEV; } + /* query 8 to find out if query 10 exists */ + ret = rmi_read(hdev, data->f11.query_base_addr + 8, buf); + if (ret) { + hid_err(hdev, "can not read gesture information: %d.\n", ret); + return ret; + } + has_query10 = !!(buf[0] & BIT(2)); + /* - * query 12 to know if the physical properties are reported - * (query 12 is at offset 10 for HID devices) + * At least 8 queries are guaranteed to be present in F11 + * +1 for query12. */ + query12_offset = 9; + + if (has_query9) + ++query12_offset; + + if (has_query10) + ++query12_offset; + + if (has_query11) + ++query12_offset; + + /* query 12 to know if the physical properties are reported */ if (has_query12) { - ret = rmi_read(hdev, data->f11.query_base_addr + 10, buf); + ret = rmi_read(hdev, data->f11.query_base_addr + + query12_offset, buf); if (ret) { hid_err(hdev, "can not get query 12: %d.\n", ret); return ret; @@ -595,7 +622,8 @@ static int rmi_populate_f11(struct hid_device *hdev) if (has_physical_props) { ret = rmi_read_block(hdev, - data->f11.query_base_addr + 11, buf, 4); + data->f11.query_base_addr + + query12_offset + 1, buf, 4); if (ret) { hid_err(hdev, "can not read query 15-18: %d.\n", ret); |