Update Kconfig with enhanced help text for hid-plantronics driver.
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. Unmapped usages are ignored
to prevent core mapping of unknown usages to random mouse events.
Patched against git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid.git
Tested on ChromeBox/ChromeBook with various Plantronics devices.
Signed-off-by: Terry Junge <terry.junge@xxxxxxxxxxxxxxx>
---
drivers/hid/Kconfig | 7 ++-
drivers/hid/hid-plantronics.c | 132 +++++++++++++++++++++++++++++++++++++++---
2 files changed, 130 insertions(+), 9 deletions(-)
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 15338af..cc4c664 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -634,7 +634,12 @@ config HID_PLANTRONICS
tristate "Plantronics USB HID Driver"
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.
+
+ Say M here if you may ever plug in a Plantronics USB audio device.
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..febb21e 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>
*/
/*
@@ -17,23 +17,138 @@
#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_BT300_MIN 0x0413
+#define PLT_BT300_MAX 0x0418
+
+
+#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 unsigned long plantronics_device_type(struct hid_device *hdev)
+{
+ unsigned i, col_page;
+ unsigned long plt_type = hdev->product;
+
+ /* multi-HID interfaces? - plt_type is PID */
+ if (plt_type >= PLT_BT300_MIN && plt_type <= PLT_BT300_MAX)
+ goto exit;
+
+ /* determine primary vendor page */
+ 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 |
+ HID_CONNECT_HIDINPUT_FORCE | HID_CONNECT_HIDDEV_FORCE);
+ if (ret)
+ hid_err(hdev, "hw start failed\n");
+
+err:
+ return ret;
}
static const struct hid_device_id plantronics_devices[] = {
@@ -46,6 +161,7 @@ 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
________________________________
CONFIDENTIALITY NOTICE: This e-mail transmission, and any documents, files or previous e-mail messages attached to it, may contain information that is confidential and/or legally privileged. If you are not the intended recipient, or a person responsible for delivering it to the intended recipient, please DO NOT disclose the contents to another person, store or copy the information in any medium, or use any of the information contained in or attached to this transmission for any purpose. If you have received this transmission in error, please immediately notify the sender by reply email or at privacy@xxxxxxxxxxxxxxx, and destroy the original transmission and its attachments without reading or saving in any manner.
For further information about Plantronics - the Company, its products, brands, partners, please visit our website www.plantronics.com.
--
To unsubscribe from this list: send the line "unsubscribe linux-input" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
