Although the cirrus drm driver handles DPMS and sets the register bits
accordingly, currently KVM/QEMU ignores it, resulting in the
non-functional console blank. This patch makes the connector dpms
callback always returning an error so that the fbcon can fall back
to the generic blank mode.
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
---
drivers/gpu/drm/cirrus/cirrus_mode.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/cirrus/cirrus_mode.c b/drivers/gpu/drm/cirrus/cirrus_mode.c
index 53f6f0f84206..7412660bb014 100644
--- a/drivers/gpu/drm/cirrus/cirrus_mode.c
+++ b/drivers/gpu/drm/cirrus/cirrus_mode.c
@@ -506,13 +506,20 @@ static void cirrus_connector_destroy(struct drm_connector *connector)
kfree(connector);
}
+static int cirrus_connector_dpms(struct drm_connector *connector, int mode)
+{
+ drm_helper_connector_dpms(connector, mode);
+ /* FIXME: return error to make fbcon generic blank working */
+ return -EINVAL;
+}
+
static const struct drm_connector_helper_funcs cirrus_vga_connector_helper_funcs = {
.get_modes = cirrus_vga_get_modes,
.best_encoder = cirrus_connector_best_encoder,
};
static const struct drm_connector_funcs cirrus_vga_connector_funcs = {
- .dpms = drm_helper_connector_dpms,
+ .dpms = cirrus_connector_dpms,
.fill_modes = drm_helper_probe_single_connector_modes,
.destroy = cirrus_connector_destroy,
};
--
2.13.3
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