diff options
Diffstat (limited to 'drivers/char/virtio_console.c')
| -rw-r--r-- | drivers/char/virtio_console.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index 3fb0d2c88ba5..ff6f5a4b58fb 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -138,12 +138,33 @@ int __init virtio_cons_early_init(int (*put_chars)(u32, const char *, int)) } /* + * virtio console configuration. This supports: + * - console resize + */ +static void virtcons_apply_config(struct virtio_device *dev) +{ + struct winsize ws; + + if (virtio_has_feature(dev, VIRTIO_CONSOLE_F_SIZE)) { + dev->config->get(dev, + offsetof(struct virtio_console_config, cols), + &ws.ws_col, sizeof(u16)); + dev->config->get(dev, + offsetof(struct virtio_console_config, rows), + &ws.ws_row, sizeof(u16)); + hvc_resize(hvc, ws); + } +} + +/* * we support only one console, the hvc struct is a global var - * There is no need to do anything + * We set the configuration at this point, since we now have a tty */ static int notifier_add_vio(struct hvc_struct *hp, int data) { hp->irq_requested = 1; + virtcons_apply_config(vdev); + return 0; } @@ -234,11 +255,18 @@ static struct virtio_device_id id_table[] = { { 0 }, }; +static unsigned int features[] = { + VIRTIO_CONSOLE_F_SIZE, +}; + static struct virtio_driver virtio_console = { + .feature_table = features, + .feature_table_size = ARRAY_SIZE(features), .driver.name = KBUILD_MODNAME, .driver.owner = THIS_MODULE, .id_table = id_table, .probe = virtcons_probe, + .config_changed = virtcons_apply_config, }; static int __init init(void) |