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Input: wacom - check for bluetooth protocol while setting OLEDs

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Bluetooth Intuos 4 use 1-bit definition while the USB ones use a 4-bits
definition. This changes the size of the raw image we receive, and thus
the kernel will only accept 1-bit images for Bluetooth and 4-bits for
USB.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Przemo Firszt <przemo@firszt.eu>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Tested-by: Przemo Firszt <przemo@firszt.eu>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Benjamin Tissoires 2014-08-06 13:58:25 -07:00 committed by Dmitry Torokhov
parent 81af7e61a7
commit 849e2f0678
1 changed files with 21 additions and 8 deletions
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29
drivers/hid/wacom_sys.c
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@ -20,6 +20,7 @@
#define WAC_CMD_LED_CONTROL 0x20 #define WAC_CMD_LED_CONTROL 0x20
#define WAC_CMD_ICON_START 0x21 #define WAC_CMD_ICON_START 0x21
#define WAC_CMD_ICON_XFER 0x23 #define WAC_CMD_ICON_XFER 0x23
#define WAC_CMD_ICON_BT_XFER 0x26
#define WAC_CMD_RETRIES 10 #define WAC_CMD_RETRIES 10
static int wacom_get_report(struct hid_device *hdev, u8 type, u8 id, static int wacom_get_report(struct hid_device *hdev, u8 type, u8 id,
@ -526,12 +527,14 @@ static int wacom_led_control(struct wacom *wacom)
return retval; return retval;
} }
static int wacom_led_putimage(struct wacom *wacom, int button_id, const void *img) static int wacom_led_putimage(struct wacom *wacom, int button_id, u8 xfer_id,
const unsigned len, const void *img)
{ {
unsigned char *buf; unsigned char *buf;
int i, retval; int i, retval;
const unsigned chunk_len = len / 4; /* 4 chunks are needed to be sent */
buf = kzalloc(259, GFP_KERNEL); buf = kzalloc(chunk_len + 3 , GFP_KERNEL);
if (!buf) if (!buf)
return -ENOMEM; return -ENOMEM;
@ -543,15 +546,15 @@ static int wacom_led_putimage(struct wacom *wacom, int button_id, const void *im
if (retval < 0) if (retval < 0)
goto out; goto out;
buf[0] = WAC_CMD_ICON_XFER; buf[0] = xfer_id;
buf[1] = button_id & 0x07; buf[1] = button_id & 0x07;
for (i = 0; i < 4; i++) { for (i = 0; i < 4; i++) {
buf[2] = i; buf[2] = i;
memcpy(buf + 3, img + i * 256, 256); memcpy(buf + 3, img + i * chunk_len, chunk_len);
retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT,
WAC_CMD_ICON_XFER, xfer_id, buf, chunk_len + 3,
buf, 259, WAC_CMD_RETRIES); WAC_CMD_RETRIES);
if (retval < 0) if (retval < 0)
break; break;
} }
@ -652,13 +655,23 @@ static ssize_t wacom_button_image_store(struct device *dev, int button_id,
struct hid_device *hdev = container_of(dev, struct hid_device, dev); struct hid_device *hdev = container_of(dev, struct hid_device, dev);
struct wacom *wacom = hid_get_drvdata(hdev); struct wacom *wacom = hid_get_drvdata(hdev);
int err; int err;
unsigned len;
u8 xfer_id;
if (count != 1024) if (hdev->bus == BUS_BLUETOOTH) {
len = 256;
xfer_id = WAC_CMD_ICON_BT_XFER;
} else {
len = 1024;
xfer_id = WAC_CMD_ICON_XFER;
}
if (count != len)
return -EINVAL; return -EINVAL;
mutex_lock(&wacom->lock); mutex_lock(&wacom->lock);
err = wacom_led_putimage(wacom, button_id, buf); err = wacom_led_putimage(wacom, button_id, xfer_id, len, buf);
mutex_unlock(&wacom->lock); mutex_unlock(&wacom->lock);