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authorLadi Prosek <lprosek@redhat.com>2016-04-13 16:43:23 +0200
committerGerd Hoffmann <kraxel@redhat.com>2016-04-13 17:26:12 +0200
commitb065e275a8066c3ec478f326f39c5fc3c9db103c (patch)
treeab230587f8185988ab0921389690d7b333800269 /hw/input
parentce47d3d4270e9c0f87cd9a3982f1a40a4514c6e3 (diff)
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virtio-input: support absolute axis config in pass-through
VIRTIO_INPUT_CFG_ABS_INFO was not implemented for pass-through input devices. This patch follows the existing design and pre-fetches the config for all absolute axes using EVIOCGABS at realize time. Signed-off-by: Ladi Prosek <lprosek@redhat.com> Message-id: 1460558603-18331-1-git-send-email-lprosek@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'hw/input')
-rw-r--r--hw/input/virtio-input-host.c46
-rw-r--r--hw/input/virtio-input.c6
2 files changed, 47 insertions, 5 deletions
diff --git a/hw/input/virtio-input-host.c b/hw/input/virtio-input-host.c
index 96124f4..cb79e80 100644
--- a/hw/input/virtio-input-host.c
+++ b/hw/input/virtio-input-host.c
@@ -70,13 +70,39 @@ static void virtio_input_bits_config(VirtIOInputHost *vih,
virtio_input_add_config(VIRTIO_INPUT(vih), &bits);
}
+static void virtio_input_abs_config(VirtIOInputHost *vih, int axis)
+{
+ virtio_input_config config;
+ struct input_absinfo absinfo;
+ int rc;
+
+ rc = ioctl(vih->fd, EVIOCGABS(axis), &absinfo);
+ if (rc < 0) {
+ return;
+ }
+
+ memset(&config, 0, sizeof(config));
+ config.select = VIRTIO_INPUT_CFG_ABS_INFO;
+ config.subsel = axis;
+ config.size = sizeof(virtio_input_absinfo);
+
+ config.u.abs.min = cpu_to_le32(absinfo.minimum);
+ config.u.abs.max = cpu_to_le32(absinfo.maximum);
+ config.u.abs.fuzz = cpu_to_le32(absinfo.fuzz);
+ config.u.abs.flat = cpu_to_le32(absinfo.flat);
+ config.u.abs.res = cpu_to_le32(absinfo.resolution);
+
+ virtio_input_add_config(VIRTIO_INPUT(vih), &config);
+}
+
static void virtio_input_host_realize(DeviceState *dev, Error **errp)
{
VirtIOInputHost *vih = VIRTIO_INPUT_HOST(dev);
VirtIOInput *vinput = VIRTIO_INPUT(dev);
- virtio_input_config id;
+ virtio_input_config id, *abs;
struct input_id ids;
- int rc, ver;
+ int rc, ver, i, axis;
+ uint8_t byte;
if (!vih->evdev) {
error_setg(errp, "evdev property is required");
@@ -127,6 +153,22 @@ static void virtio_input_host_realize(DeviceState *dev, Error **errp)
virtio_input_bits_config(vih, EV_SW, SW_CNT);
virtio_input_bits_config(vih, EV_LED, LED_CNT);
+ abs = virtio_input_find_config(VIRTIO_INPUT(vih),
+ VIRTIO_INPUT_CFG_EV_BITS, EV_ABS);
+ if (abs) {
+ for (i = 0; i < abs->size; i++) {
+ byte = abs->u.bitmap[i];
+ axis = 8 * i;
+ while (byte) {
+ if (byte & 1) {
+ virtio_input_abs_config(vih, axis);
+ }
+ axis++;
+ byte >>= 1;
+ }
+ }
+ }
+
qemu_set_fd_handler(vih->fd, virtio_input_host_event, NULL, vih);
return;
diff --git a/hw/input/virtio-input.c b/hw/input/virtio-input.c
index ac019c7..f59749a 100644
--- a/hw/input/virtio-input.c
+++ b/hw/input/virtio-input.c
@@ -99,9 +99,9 @@ static void virtio_input_handle_sts(VirtIODevice *vdev, VirtQueue *vq)
virtio_notify(vdev, vinput->sts);
}
-static virtio_input_config *virtio_input_find_config(VirtIOInput *vinput,
- uint8_t select,
- uint8_t subsel)
+virtio_input_config *virtio_input_find_config(VirtIOInput *vinput,
+ uint8_t select,
+ uint8_t subsel)
{
VirtIOInputConfig *cfg;