From 3246c9abe5f4358cc5c60b8621485faa9883d06b Mon Sep 17 00:00:00 2001
From: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
Date: Thu, 15 Jul 2021 01:08:05 +0200
Subject: [PATCH] drm/vc4: Refactor mode checking logic
Replace drm_encoder_helper_funcs::atomic_check with
drm_connector_helper_funcs::atomic_check - the former is not called
during drm_mode_obj_set_property_ioctl(). Set crtc_state->mode_changed
if TV norm changes even without explicit mode change. This makes things
like "xrandr --output Composite-1 --set mode PAL-M" work properly.
Signed-off-by: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
---
drivers/gpu/drm/vc4/vc4_vec.c | 42 ++++++++++++++++++++++-------------
1 file changed, 26 insertions(+), 16 deletions(-)
--- a/drivers/gpu/drm/vc4/vc4_vec.c
+++ b/drivers/gpu/drm/vc4/vc4_vec.c
@@ -392,6 +392,31 @@ static void vc4_vec_connector_reset(stru
connector->state->tv.mode = vc4_vec_get_default_mode(connector);
}
+static int vc4_vec_connector_atomic_check(struct drm_connector *conn,
+ struct drm_atomic_state *state)
+{
+ struct drm_connector_state *old_state =
+ drm_atomic_get_old_connector_state(state, conn);
+ struct drm_connector_state *new_state =
+ drm_atomic_get_new_connector_state(state, conn);
+
+ const struct vc4_vec_tv_mode *vec_mode =
+ &vc4_vec_tv_modes[new_state->tv.mode];
+
+ if (new_state->crtc) {
+ struct drm_crtc_state *crtc_state =
+ drm_atomic_get_new_crtc_state(state, new_state->crtc);
+
+ if (!drm_mode_equal(vec_mode->mode, &crtc_state->mode))
+ return -EINVAL;
+
+ if (old_state->tv.mode != new_state->tv.mode)
+ crtc_state->mode_changed = true;
+ }
+
+ return 0;
+}
+
static const struct drm_connector_funcs vc4_vec_connector_funcs = {
.detect = vc4_vec_connector_detect,
.fill_modes = drm_helper_probe_single_connector_modes,
@@ -402,6 +427,7 @@ static const struct drm_connector_funcs
static const struct drm_connector_helper_funcs vc4_vec_connector_helper_funcs = {
.get_modes = vc4_vec_connector_get_modes,
+ .atomic_check = vc4_vec_connector_atomic_check,
};
static int vc4_vec_connector_init(struct drm_device *dev, struct vc4_vec *vec)
@@ -550,23 +576,7 @@ err_dev_exit:
drm_dev_exit(idx);
}
-static int vc4_vec_encoder_atomic_check(struct drm_encoder *encoder,
- struct drm_crtc_state *crtc_state,
- struct drm_connector_state *conn_state)
-{
- const struct vc4_vec_tv_mode *vec_mode;
-
- vec_mode = &vc4_vec_tv_modes[conn_state->tv.mode];
-
- if (conn_state->crtc &&
- !drm_mode_equal(vec_mode->mode, &crtc_state->adjusted_mode))
- return -EINVAL;
-
- return 0;
-}
-
static const struct drm_encoder_helper_funcs vc4_vec_encoder_helper_funcs = {
- .atomic_check = vc4_vec_encoder_atomic_check,
.atomic_disable = vc4_vec_encoder_disable,
.atomic_enable = vc4_vec_encoder_enable,
};