Update hid-plantronics.c to identify device type and correctly map
either the vendor unique or consumer control volume up/down usages
to KEY_VOLUMEUP and KEY_VOLUMEDOWN events.
Update Kconfig with enhanced help text for hid-plantronics driver
and changed default value from !EXPERT to m. This driver prevents
hid-input from mapping unknown vendor unique usages to mouse events
so it is preferred that it be available, expert or not.
Signed-off-by: Terry Junge <terry.junge@xxxxxxxxxxxxxxx>
---
drivers/hid/Kconfig | 7 +-
drivers/hid/hid-plantronics.c | 152 +++++++++++++++++++++++++++++++++++++++---
2 files changed, 149 insertions(+), 10 deletions(-)
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 152b006..69aac6b 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -638,10 +638,13 @@ config HID_PICOLCD_CIR
config HID_PLANTRONICS
tristate "Plantronics USB HID Driver"
- default !EXPERT
+ default m
depends on HID
---help---
- Provides HID support for Plantronics telephony devices.
+ Provides HID support for Plantronics USB audio devices.
+ Correctly maps vendor unique volume up/down HID usages to
+ KEY_VOLUMEUP and KEY_VOLUMEDOWN events and prevents core mapping
+ of other vendor unique HID usages to random mouse events.
config HID_PRIMAX
tristate "Primax non-fully HID-compliant devices"
diff --git a/drivers/hid/hid-plantronics.c b/drivers/hid/hid-plantronics.c
index 2180e07..c4756a1 100644
--- a/drivers/hid/hid-plantronics.c
+++ b/drivers/hid/hid-plantronics.c
@@ -2,7 +2,7 @@
* Plantronics USB HID Driver
*
* Copyright (c) 2014 JD Cole <jd.cole@xxxxxxxxxxxxxxx>
- * Copyright (c) 2014 Terry Junge <terry.junge@xxxxxxxxxxxxxxx>
+ * Copyright (c) 2015 Terry Junge <terry.junge@xxxxxxxxxxxxxxx>
*/
/*
@@ -14,26 +14,161 @@
#include "hid-ids.h"
+#include <linux/usb.h>
#include <linux/hid.h>
#include <linux/module.h>
+#define PLT_HID_1_0_PAGE 0xffa00000
+#define PLT_HID_2_0_PAGE 0xffa20000
+
+#define PLT_BASIC_TELEPHONY 0x0003
+#define PLT_BASIC_EXCEPTION 0x0005
+
+#define PLT_VOL_UP 0x00b1
+#define PLT_VOL_DOWN 0x00b2
+
+#define PLT1_VOL_UP (PLT_HID_1_0_PAGE | PLT_VOL_UP)
+#define PLT1_VOL_DOWN (PLT_HID_1_0_PAGE | PLT_VOL_DOWN)
+#define PLT2_VOL_UP (PLT_HID_2_0_PAGE | PLT_VOL_UP)
+#define PLT2_VOL_DOWN (PLT_HID_2_0_PAGE | PLT_VOL_DOWN)
+
+#define PLT_DA60 0xda60
+
+#define PLT_ALLOW_CONSUMER (field->application == HID_CP_CONSUMERCONTROL && \
+ (usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER)
+
static int plantronics_input_mapping(struct hid_device *hdev,
struct hid_input *hi,
struct hid_field *field,
struct hid_usage *usage,
unsigned long **bit, int *max)
{
- if (field->application == HID_CP_CONSUMERCONTROL
- && (usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER) {
- hid_dbg(hdev, "usage: %08x (appl: %08x) - defaulted\n",
- usage->hid, field->application);
- return 0;
+ unsigned short mapped_key;
+ unsigned long plt_type = (unsigned long)hid_get_drvdata(hdev);
+
+ /* handle volume up/down mapping */
+ /* non-standard types or multi-HID interfaces - plt_type is PID */
+ if (!(plt_type & HID_USAGE_PAGE)) {
+ switch (plt_type) {
+ case PLT_DA60:
+ if (PLT_ALLOW_CONSUMER)
+ goto defaulted;
+ goto ignored;
+ default:
+ if (PLT_ALLOW_CONSUMER)
+ goto defaulted;
+ }
+ }
+ /* handle standard types - plt_type is 0xffa0uuuu or 0xffa2uuuu */
+ /* 'basic telephony compliant' - allow default consumer page map */
+ else if ((plt_type & HID_USAGE) >= PLT_BASIC_TELEPHONY &&
+ (plt_type & HID_USAGE) != PLT_BASIC_EXCEPTION) {
+ if (PLT_ALLOW_CONSUMER)
+ goto defaulted;
+ }
+ /* not 'basic telephony' - apply legacy mapping */
+ /* only map if the field is in the device's primary vendor page */
+ else if (!((field->application ^ plt_type) & HID_USAGE_PAGE)) {
+ switch (usage->hid) {
+ case PLT1_VOL_UP:
+ case PLT2_VOL_UP:
+ mapped_key = KEY_VOLUMEUP;
+ goto mapped;
+ case PLT1_VOL_DOWN:
+ case PLT2_VOL_DOWN:
+ mapped_key = KEY_VOLUMEDOWN;
+ goto mapped;
+ }
}
- hid_dbg(hdev, "usage: %08x (appl: %08x) - ignored\n",
- usage->hid, field->application);
+/*
+ * Future mapping of call control or other usages,
+ * if and when keys are defined would go here
+ * otherwise, ignore everything else that was not mapped
+ */
+ignored:
return -1;
+
+defaulted:
+ hid_dbg(hdev, "usage: %08x (appl: %08x) - defaulted\n",
+ usage->hid, field->application);
+ return 0;
+
+mapped:
+ hid_map_usage_clear(hi, usage, bit, max, EV_KEY, mapped_key);
+ hid_dbg(hdev, "usage: %08x (appl: %08x) - mapped to key %d\n",
+ usage->hid, field->application, mapped_key);
+ return 1;
+}
+
+static int plantronics_hid_interface_count(struct hid_device *hdev)
+{
+ int i, count;
+ struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
+ struct usb_device *udev = interface_to_usbdev(intf);
+ struct usb_host_config *config = udev->actconfig;
+
+ if (!config) {
+ hid_dbg(hdev, "no active configuration found\n");
+ return 0;
+ }
+
+ for (i = 0, count = 0; i < config->desc.bNumInterfaces; i++) {
+ intf = config->interface[i];
+ if (intf && intf->cur_altsetting &&
+ intf->cur_altsetting->desc.bInterfaceClass == USB_CLASS_HID)
+ count++;
+ }
+
+ hid_dbg(hdev, "found %d HID interface(s)\n", count);
+ return count;
+}
+
+static unsigned long plantronics_device_type(struct hid_device *hdev)
+{
+ unsigned i, col_page;
+ unsigned long plt_type = hdev->product;
+
+ if (plantronics_hid_interface_count(hdev) != 1) {
+ hdev->quirks |= HID_QUIRK_HIDINPUT_FORCE;
+ goto exit;
+ }
+
+ for (i = 0; i < hdev->maxcollection; i++) {
+ col_page = hdev->collection[i].usage & HID_USAGE_PAGE;
+ if (col_page == PLT_HID_2_0_PAGE) {
+ plt_type = hdev->collection[i].usage;
+ break;
+ }
+ if (col_page == PLT_HID_1_0_PAGE)
+ plt_type = hdev->collection[i].usage;
+ }
+
+exit:
+ hid_dbg(hdev, "plt_type decoded as: %08lx\n", plt_type);
+ return plt_type;
+}
+
+static int plantronics_probe(struct hid_device *hdev,
+ const struct hid_device_id *id)
+{
+ int ret;
+
+ ret = hid_parse(hdev);
+ if (ret) {
+ hid_err(hdev, "parse failed\n");
+ goto err;
+ }
+
+ hid_set_drvdata(hdev, (void *)plantronics_device_type(hdev));
+
+ ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
+ if (ret)
+ hid_err(hdev, "hw start failed\n");
+
+err:
+ return ret;
}
static const struct hid_device_id plantronics_devices[] = {
@@ -46,6 +181,7 @@ static struct hid_driver plantronics_driver = {
.name = "plantronics",
.id_table = plantronics_devices,
.input_mapping = plantronics_input_mapping,
+ .probe = plantronics_probe,
};
module_hid_driver(plantronics_driver);
--
1.9.1
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