mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-15 08:14:15 +08:00
bebf8820b3
These chips report mute button events in bit 4 of their report without it being part of the report descriptor. Use a custom descriptor that maps this bit. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
247 lines
6.6 KiB
C
247 lines
6.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* HID driver for CMedia CM6533 audio jack controls
|
|
* and HS100B mute buttons
|
|
*
|
|
* Copyright (C) 2015 Ben Chen <ben_chen@bizlinktech.com>
|
|
* Copyright (C) 2021 Thomas Weißschuh <linux@weissschuh.net>
|
|
*/
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/hid.h>
|
|
#include <linux/module.h>
|
|
#include "hid-ids.h"
|
|
|
|
MODULE_AUTHOR("Ben Chen");
|
|
MODULE_AUTHOR("Thomas Weißschuh");
|
|
MODULE_DESCRIPTION("CM6533 HID jack controls and HS100B mute button");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
#define CM6533_JD_TYPE_COUNT 1
|
|
#define CM6533_JD_RAWEV_LEN 16
|
|
#define CM6533_JD_SFX_OFFSET 8
|
|
|
|
#define HS100B_RDESC_ORIG_SIZE 60
|
|
|
|
/* Fixed report descriptor of HS-100B audio chip
|
|
* Bit 4 is an abolute Microphone mute usage instead of being unassigned.
|
|
*/
|
|
static __u8 hs100b_rdesc_fixed[] = {
|
|
0x05, 0x0C, /* Usage Page (Consumer), */
|
|
0x09, 0x01, /* Usage (Consumer Control), */
|
|
0xA1, 0x01, /* Collection (Application), */
|
|
0x15, 0x00, /* Logical Minimum (0), */
|
|
0x25, 0x01, /* Logical Maximum (1), */
|
|
0x09, 0xE9, /* Usage (Volume Inc), */
|
|
0x09, 0xEA, /* Usage (Volume Dec), */
|
|
0x75, 0x01, /* Report Size (1), */
|
|
0x95, 0x02, /* Report Count (2), */
|
|
0x81, 0x02, /* Input (Variable), */
|
|
0x09, 0xE2, /* Usage (Mute), */
|
|
0x95, 0x01, /* Report Count (1), */
|
|
0x81, 0x06, /* Input (Variable, Relative), */
|
|
0x05, 0x0B, /* Usage Page (Telephony), */
|
|
0x09, 0x2F, /* Usage (2Fh), */
|
|
0x81, 0x02, /* Input (Variable), */
|
|
0x09, 0x20, /* Usage (20h), */
|
|
0x81, 0x06, /* Input (Variable, Relative), */
|
|
0x05, 0x0C, /* Usage Page (Consumer), */
|
|
0x09, 0x00, /* Usage (00h), */
|
|
0x95, 0x03, /* Report Count (3), */
|
|
0x81, 0x02, /* Input (Variable), */
|
|
0x26, 0xFF, 0x00, /* Logical Maximum (255), */
|
|
0x09, 0x00, /* Usage (00h), */
|
|
0x75, 0x08, /* Report Size (8), */
|
|
0x95, 0x03, /* Report Count (3), */
|
|
0x81, 0x02, /* Input (Variable), */
|
|
0x09, 0x00, /* Usage (00h), */
|
|
0x95, 0x04, /* Report Count (4), */
|
|
0x91, 0x02, /* Output (Variable), */
|
|
0xC0 /* End Collection */
|
|
};
|
|
|
|
/*
|
|
*
|
|
*CM6533 audio jack HID raw events:
|
|
*
|
|
*Plug in:
|
|
*01000600 002083xx 080008c0 10000000
|
|
*about 3 seconds later...
|
|
*01000a00 002083xx 08000380 10000000
|
|
*01000600 002083xx 08000380 10000000
|
|
*
|
|
*Plug out:
|
|
*01000400 002083xx 080008c0 x0000000
|
|
*/
|
|
|
|
static const u8 ji_sfx[] = { 0x08, 0x00, 0x08, 0xc0 };
|
|
static const u8 ji_in[] = { 0x01, 0x00, 0x06, 0x00 };
|
|
static const u8 ji_out[] = { 0x01, 0x00, 0x04, 0x00 };
|
|
|
|
static int jack_switch_types[CM6533_JD_TYPE_COUNT] = {
|
|
SW_HEADPHONE_INSERT,
|
|
};
|
|
|
|
struct cmhid {
|
|
struct input_dev *input_dev;
|
|
struct hid_device *hid;
|
|
unsigned short switch_map[CM6533_JD_TYPE_COUNT];
|
|
};
|
|
|
|
static void hp_ev(struct hid_device *hid, struct cmhid *cm, int value)
|
|
{
|
|
input_report_switch(cm->input_dev, SW_HEADPHONE_INSERT, value);
|
|
input_sync(cm->input_dev);
|
|
}
|
|
|
|
static int cmhid_raw_event(struct hid_device *hid, struct hid_report *report,
|
|
u8 *data, int len)
|
|
{
|
|
struct cmhid *cm = hid_get_drvdata(hid);
|
|
|
|
if (len != CM6533_JD_RAWEV_LEN)
|
|
goto out;
|
|
if (memcmp(data+CM6533_JD_SFX_OFFSET, ji_sfx, sizeof(ji_sfx)))
|
|
goto out;
|
|
|
|
if (!memcmp(data, ji_out, sizeof(ji_out))) {
|
|
hp_ev(hid, cm, 0);
|
|
goto out;
|
|
}
|
|
if (!memcmp(data, ji_in, sizeof(ji_in))) {
|
|
hp_ev(hid, cm, 1);
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
return 0;
|
|
}
|
|
|
|
static int cmhid_input_configured(struct hid_device *hid,
|
|
struct hid_input *hidinput)
|
|
{
|
|
struct input_dev *input_dev = hidinput->input;
|
|
struct cmhid *cm = hid_get_drvdata(hid);
|
|
int i;
|
|
|
|
cm->input_dev = input_dev;
|
|
memcpy(cm->switch_map, jack_switch_types, sizeof(cm->switch_map));
|
|
input_dev->evbit[0] = BIT(EV_SW);
|
|
for (i = 0; i < CM6533_JD_TYPE_COUNT; i++)
|
|
input_set_capability(cm->input_dev,
|
|
EV_SW, jack_switch_types[i]);
|
|
return 0;
|
|
}
|
|
|
|
static int cmhid_input_mapping(struct hid_device *hid,
|
|
struct hid_input *hi, struct hid_field *field,
|
|
struct hid_usage *usage, unsigned long **bit, int *max)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static int cmhid_probe(struct hid_device *hid, const struct hid_device_id *id)
|
|
{
|
|
int ret;
|
|
struct cmhid *cm;
|
|
|
|
cm = kzalloc(sizeof(struct cmhid), GFP_KERNEL);
|
|
if (!cm) {
|
|
ret = -ENOMEM;
|
|
goto allocfail;
|
|
}
|
|
|
|
cm->hid = hid;
|
|
|
|
hid->quirks |= HID_QUIRK_HIDINPUT_FORCE;
|
|
hid_set_drvdata(hid, cm);
|
|
|
|
ret = hid_parse(hid);
|
|
if (ret) {
|
|
hid_err(hid, "parse failed\n");
|
|
goto fail;
|
|
}
|
|
|
|
ret = hid_hw_start(hid, HID_CONNECT_DEFAULT | HID_CONNECT_HIDDEV_FORCE);
|
|
if (ret) {
|
|
hid_err(hid, "hw start failed\n");
|
|
goto fail;
|
|
}
|
|
|
|
return 0;
|
|
fail:
|
|
kfree(cm);
|
|
allocfail:
|
|
return ret;
|
|
}
|
|
|
|
static void cmhid_remove(struct hid_device *hid)
|
|
{
|
|
struct cmhid *cm = hid_get_drvdata(hid);
|
|
|
|
hid_hw_stop(hid);
|
|
kfree(cm);
|
|
}
|
|
|
|
static const struct hid_device_id cmhid_devices[] = {
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM6533) },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(hid, cmhid_devices);
|
|
|
|
static struct hid_driver cmhid_driver = {
|
|
.name = "cm6533_jd",
|
|
.id_table = cmhid_devices,
|
|
.raw_event = cmhid_raw_event,
|
|
.input_configured = cmhid_input_configured,
|
|
.probe = cmhid_probe,
|
|
.remove = cmhid_remove,
|
|
.input_mapping = cmhid_input_mapping,
|
|
};
|
|
|
|
static __u8 *cmhid_hs100b_report_fixup(struct hid_device *hid, __u8 *rdesc,
|
|
unsigned int *rsize)
|
|
{
|
|
if (*rsize == HS100B_RDESC_ORIG_SIZE) {
|
|
hid_info(hid, "Fixing CMedia HS-100B report descriptor\n");
|
|
rdesc = hs100b_rdesc_fixed;
|
|
*rsize = sizeof(hs100b_rdesc_fixed);
|
|
}
|
|
return rdesc;
|
|
}
|
|
|
|
static const struct hid_device_id cmhid_hs100b_devices[] = {
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CMEDIA_HS100B) },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(hid, cmhid_hs100b_devices);
|
|
|
|
static struct hid_driver cmhid_hs100b_driver = {
|
|
.name = "cmedia_hs100b",
|
|
.id_table = cmhid_hs100b_devices,
|
|
.report_fixup = cmhid_hs100b_report_fixup,
|
|
};
|
|
|
|
static int cmedia_init(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = hid_register_driver(&cmhid_driver);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = hid_register_driver(&cmhid_hs100b_driver);
|
|
if (ret)
|
|
hid_unregister_driver(&cmhid_driver);
|
|
|
|
return ret;
|
|
}
|
|
module_init(cmedia_init);
|
|
|
|
static void cmedia_exit(void)
|
|
{
|
|
hid_unregister_driver(&cmhid_driver);
|
|
hid_unregister_driver(&cmhid_hs100b_driver);
|
|
}
|
|
module_exit(cmedia_exit);
|