HID: add feature_mapping callback

Currently hid doesn't export the features it knows to the specific modules.
Some information can be really important in such features: MosArt and
Cypress devices are by default not in a multitouch mode.
We have to send the value 2 on the right feature.

This patch exports to the module the features report so they can find the
right feature to set up the correct mode.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@enac.fr>
Acked-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 13 insertions, 4 deletions

diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index d8d372bae3cc..8703b2cd27ca 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -290,6 +290,14 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
                 goto ignore;
         }
 
+        if (field->report_type == HID_FEATURE_REPORT) {
+                if (device->driver->feature_mapping) {
+                        device->driver->feature_mapping(device, hidinput, field,
+                                usage);
+                }
+                goto ignore;
+        }
+
         if (device->driver->input_mapping) {
                 int ret = device->driver->input_mapping(device, hidinput, field,
                                 usage, &bit, &max);
@@ -839,7 +847,6 @@ int hidinput_connect(struct hid_device *hid, unsigned int force)
         struct hid_input *hidinput = NULL;
         struct input_dev *input_dev;
         int i, j, k;
-        int max_report_type = HID_OUTPUT_REPORT;
 
         INIT_LIST_HEAD(&hid->inputs);
 
@@ -856,10 +863,11 @@ int hidinput_connect(struct hid_device *hid, unsigned int force)
                         return -1;
         }
 
-        if (hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
-                max_report_type = HID_INPUT_REPORT;
+        for (k = HID_INPUT_REPORT; k <= HID_FEATURE_REPORT; k++) {
+                if (k == HID_OUTPUT_REPORT &&
+                        hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
+                        continue;
 
-        for (k = HID_INPUT_REPORT; k <= max_report_type; k++)
                 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
 
                         if (!report->maxfield)
@@ -912,6 +920,7 @@ int hidinput_connect(struct hid_device *hid, unsigned int force)
                                 hidinput = NULL;
                         }
                 }
+        }
 
         if (hidinput && input_register_device(hidinput->input))
                 goto out_cleanup;