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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>
This commit is contained in:
Benjamin Tissoires 2011-01-07 23:44:32 +01:00 committed by Jiri Kosina
parent 31b6ca0af7
commit 0d2689c0f0
2 changed files with 17 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/hid/hid-input.c
View File

@ -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;

4
include/linux/hid.h
View File

@ -593,6 +593,7 @@ struct hid_usage_id {
* @report_fixup: called before report descriptor parsing (NULL means nop)
* @input_mapping: invoked on input registering before mapping an usage
* @input_mapped: invoked on input registering after mapping an usage
* @feature_mapping: invoked on feature registering
* @suspend: invoked on suspend (NULL means nop)
* @resume: invoked on resume if device was not reset (NULL means nop)
* @reset_resume: invoked on resume if device was reset (NULL means nop)
@ -636,6 +637,9 @@ struct hid_driver {
int (*input_mapped)(struct hid_device *hdev,
struct hid_input *hidinput, struct hid_field *field,
struct hid_usage *usage, unsigned long **bit, int *max);
void (*feature_mapping)(struct hid_device *hdev,
struct hid_input *hidinput, struct hid_field *field,
struct hid_usage *usage);
#ifdef CONFIG_PM
int (*suspend)(struct hid_device *hdev, pm_message_t message);
int (*resume)(struct hid_device *hdev);