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Input: bcm5974 - add support for the 2013 MacBook Air 

The June 2013 Macbook Air (13'') has a new trackpad protocol; four new
values are inserted in the header, and the mode switch is no longer
needed. This patch adds support for the new devices.

Cc: stable@vger.kernel.org
Reported-and-tested-by: Brad Ford <plymouthffl@gmail.com>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dmitry Torokhov 2013-07-01 11:47:51 -07:00 committed by Dmitry Torokhov
parent 9d9a04ee75
commit 148c1c8ad3
1 changed files with 34 additions and 2 deletions
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36
drivers/input/mouse/bcm5974.c
View File

@ -88,6 +88,10 @@
#define USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI 0x0259
#define USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO 0x025a
#define USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS 0x025b
/* MacbookAir6,2 (unibody, June 2013) */
#define USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI 0x0291
#define USB_DEVICE_ID_APPLE_WELLSPRING8_ISO 0x0292
#define USB_DEVICE_ID_APPLE_WELLSPRING8_JIS 0x0293
#define BCM5974_DEVICE(prod) { \
.match_flags = (USB_DEVICE_ID_MATCH_DEVICE | \
@ -145,6 +149,10 @@ static const struct usb_device_id bcm5974_table[] = {
BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI),
BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO),
BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS),
/* MacbookAir6,2 */
BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI),
BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING8_ISO),
BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING8_JIS),
/* Terminating entry */
{}
};
@ -172,15 +180,18 @@ struct bt_data {
/* trackpad header types */
enum tp_type {
TYPE1, /* plain trackpad */
TYPE2 /* button integrated in trackpad */
TYPE2, /* button integrated in trackpad */
TYPE3 /* additional header fields since June 2013 */
};
/* trackpad finger data offsets, le16-aligned */
#define FINGER_TYPE1 (13 * sizeof(__le16))
#define FINGER_TYPE2 (15 * sizeof(__le16))
#define FINGER_TYPE3 (19 * sizeof(__le16))
/* trackpad button data offsets */
#define BUTTON_TYPE2 15
#define BUTTON_TYPE3 23
/* list of device capability bits */
#define HAS_INTEGRATED_BUTTON 1
@ -400,6 +411,19 @@ static const struct bcm5974_config bcm5974_config_table[] = {
{ SN_COORD, -150, 6730 },
{ SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION }
},
{
USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI,
USB_DEVICE_ID_APPLE_WELLSPRING8_ISO,
USB_DEVICE_ID_APPLE_WELLSPRING8_JIS,
HAS_INTEGRATED_BUTTON,
0, sizeof(struct bt_data),
0x83, TYPE3, FINGER_TYPE3, FINGER_TYPE3 + SIZEOF_ALL_FINGERS,
{ SN_PRESSURE, 0, 300 },
{ SN_WIDTH, 0, 2048 },
{ SN_COORD, -4620, 5140 },
{ SN_COORD, -150, 6600 },
{ SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION }
},
{}
};
@ -557,6 +581,9 @@ static int report_tp_state(struct bcm5974 *dev, int size)
input_report_key(input, BTN_LEFT, ibt);
}
if (c->tp_type == TYPE3)
input_report_key(input, BTN_LEFT, dev->tp_data[BUTTON_TYPE3]);
input_sync(input);
return 0;
@ -572,9 +599,14 @@ static int report_tp_state(struct bcm5974 *dev, int size)
static int bcm5974_wellspring_mode(struct bcm5974 *dev, bool on)
{
char *data = kmalloc(8, GFP_KERNEL);
int retval = 0, size;
char *data;
/* Type 3 does not require a mode switch */
if (dev->cfg.tp_type == TYPE3)
return 0;
data = kmalloc(8, GFP_KERNEL);
if (!data) {
dev_err(&dev->intf->dev, "out of memory\n");
retval = -ENOMEM;