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drm/mgag200: Introduce custom CRTC state 

Inherit from struct drm_crtc_state by embeding it and providing the
rsp callbacks for simple-kms helpers. No functional changes.

The new state struct mgag200_crtc_state will hold PLL values for modeset
operations.

v2:
	* move the simple-kms changes into a separate patch (Sam)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210714142240.21979-13-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2021-07-14 16:22:39 +02:00
parent 38c5af44a7
commit 51b569394b
2 changed files with 55 additions and 0 deletions
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9
drivers/gpu/drm/mgag200/mgag200_drv.h
View File

@ -157,6 +157,15 @@ struct mgag200_pll {
const struct mgag200_pll_funcs *funcs;
};
struct mgag200_crtc_state {
struct drm_crtc_state base;
};
static inline struct mgag200_crtc_state *to_mgag200_crtc_state(struct drm_crtc_state *base)
{
return container_of(base, struct mgag200_crtc_state, base);
}
#define to_mga_connector(x) container_of(x, struct mga_connector, base)
struct mga_i2c_chan {

46
drivers/gpu/drm/mgag200/mgag200_mode.c
View File

@ -964,6 +964,49 @@ mgag200_simple_display_pipe_update(struct drm_simple_display_pipe *pipe,
mgag200_handle_damage(mdev, fb, &damage, &shadow_plane_state->map[0]);
}
static struct drm_crtc_state *
mgag200_simple_display_pipe_duplicate_crtc_state(struct drm_simple_display_pipe *pipe)
{
struct drm_crtc *crtc = &pipe->crtc;
struct drm_crtc_state *crtc_state = crtc->state;
struct mgag200_crtc_state *new_mgag200_crtc_state;
if (!crtc_state)
return NULL;
new_mgag200_crtc_state = kzalloc(sizeof(*new_mgag200_crtc_state), GFP_KERNEL);
if (!new_mgag200_crtc_state)
return NULL;
__drm_atomic_helper_crtc_duplicate_state(crtc, &new_mgag200_crtc_state->base);
return &new_mgag200_crtc_state->base;
}
static void mgag200_simple_display_pipe_destroy_crtc_state(struct drm_simple_display_pipe *pipe,
struct drm_crtc_state *crtc_state)
{
struct mgag200_crtc_state *mgag200_crtc_state = to_mgag200_crtc_state(crtc_state);
__drm_atomic_helper_crtc_destroy_state(&mgag200_crtc_state->base);
kfree(mgag200_crtc_state);
}
static void mgag200_simple_display_pipe_reset_crtc(struct drm_simple_display_pipe *pipe)
{
struct drm_crtc *crtc = &pipe->crtc;
struct mgag200_crtc_state *mgag200_crtc_state;
if (crtc->state) {
mgag200_simple_display_pipe_destroy_crtc_state(pipe, crtc->state);
crtc->state = NULL; /* must be set to NULL here */
}
mgag200_crtc_state = kzalloc(sizeof(*mgag200_crtc_state), GFP_KERNEL);
if (!mgag200_crtc_state)
return;
__drm_atomic_helper_crtc_reset(crtc, &mgag200_crtc_state->base);
}
static const struct drm_simple_display_pipe_funcs
mgag200_simple_display_pipe_funcs = {
.mode_valid = mgag200_simple_display_pipe_mode_valid,
@ -971,6 +1014,9 @@ mgag200_simple_display_pipe_funcs = {
.disable = mgag200_simple_display_pipe_disable,
.check = mgag200_simple_display_pipe_check,
.update = mgag200_simple_display_pipe_update,
.reset_crtc = mgag200_simple_display_pipe_reset_crtc,
.duplicate_crtc_state = mgag200_simple_display_pipe_duplicate_crtc_state,
.destroy_crtc_state = mgag200_simple_display_pipe_destroy_crtc_state,
DRM_GEM_SIMPLE_DISPLAY_PIPE_SHADOW_PLANE_FUNCS,
};