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drm/cirrus: Store HW format/pitch in primary-plane state

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The hardware settings for color format and pitch are state of the
primary plane. Store the values in the primary plane's state structure
struct cirrus_primary_plane_state. Adapt all callers.

All fields in struct cirrus_device are now considered immutable after
initialization. Plane updates consider the difference between the old
and the new plane state before updating format or pitch.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230215161517.5113-17-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2023-02-15 17:15:16 +01:00
parent 74b9a444ba
commit de7d09ffd5
1 changed files with 31 additions and 20 deletions
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51
drivers/gpu/drm/tiny/cirrus.c
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@ -63,10 +63,6 @@ struct cirrus_device {
struct drm_encoder encoder;
struct drm_connector connector;
/* HW scanout buffer */
const struct drm_format_info *format;
unsigned int pitch;
/* HW resources */
void __iomem *vram;
void __iomem *mmio;
@ -76,6 +72,10 @@ struct cirrus_device {
struct cirrus_primary_plane_state {
struct drm_shadow_plane_state base;
/* HW scanout buffer */
const struct drm_format_info *format;
unsigned int pitch;
};
static inline struct cirrus_primary_plane_state *
@ -268,15 +268,14 @@ static void cirrus_mode_set(struct cirrus_device *cirrus,
}
static void cirrus_format_set(struct cirrus_device *cirrus,
struct drm_framebuffer *fb)
const struct drm_format_info *format)
{
u8 sr07, hdr;
sr07 = rreg_seq(cirrus, 0x07);
sr07 &= 0xe0;
cirrus->format = cirrus_format(fb);
switch (cirrus->format->format) {
switch (format->format) {
case DRM_FORMAT_C8:
sr07 |= 0x11;
hdr = 0x00;
@ -308,20 +307,18 @@ static void cirrus_format_set(struct cirrus_device *cirrus,
wreg_hdr(cirrus, hdr);
}
static void cirrus_pitch_set(struct cirrus_device *cirrus,
struct drm_framebuffer *fb)
static void cirrus_pitch_set(struct cirrus_device *cirrus, unsigned int pitch)
{
u8 cr13, cr1b;
/* Program the pitch */
cirrus->pitch = cirrus_pitch(fb);
cr13 = cirrus->pitch / 8;
cr13 = pitch / 8;
wreg_crt(cirrus, VGA_CRTC_OFFSET, cr13);
/* Enable extended blanking and pitch bits, and enable full memory */
cr1b = 0x22;
cr1b |= (cirrus->pitch >> 7) & 0x10;
cr1b |= (cirrus->pitch >> 6) & 0x40;
cr1b |= (pitch >> 7) & 0x10;
cr1b |= (pitch >> 6) & 0x40;
wreg_crt(cirrus, 0x1b, cr1b);
cirrus_set_start_address(cirrus, 0);
@ -345,6 +342,8 @@ static int cirrus_primary_plane_helper_atomic_check(struct drm_plane *plane,
struct drm_atomic_state *state)
{
struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, plane);
struct cirrus_primary_plane_state *new_primary_plane_state =
to_cirrus_primary_plane_state(new_plane_state);
struct drm_framebuffer *fb = new_plane_state->fb;
struct drm_crtc *new_crtc = new_plane_state->crtc;
struct drm_crtc_state *new_crtc_state = NULL;
@ -371,6 +370,9 @@ static int cirrus_primary_plane_helper_atomic_check(struct drm_plane *plane,
else if (pitch * fb->height > CIRRUS_VRAM_SIZE)
return -EINVAL;
new_primary_plane_state->format = cirrus_format(fb);
new_primary_plane_state->pitch = pitch;
return 0;
}
@ -379,9 +381,15 @@ static void cirrus_primary_plane_helper_atomic_update(struct drm_plane *plane,
{
struct cirrus_device *cirrus = to_cirrus(plane->dev);
struct drm_plane_state *plane_state = drm_atomic_get_new_plane_state(state, plane);
struct cirrus_primary_plane_state *primary_plane_state =
to_cirrus_primary_plane_state(plane_state);
struct drm_shadow_plane_state *shadow_plane_state = to_drm_shadow_plane_state(plane_state);
struct drm_framebuffer *fb = plane_state->fb;
const struct drm_format_info *format = primary_plane_state->format;
unsigned int pitch = primary_plane_state->pitch;
struct drm_plane_state *old_plane_state = drm_atomic_get_old_plane_state(state, plane);
struct cirrus_primary_plane_state *old_primary_plane_state =
to_cirrus_primary_plane_state(old_plane_state);
struct iosys_map vaddr = IOSYS_MAP_INIT_VADDR_IOMEM(cirrus->vram);
struct drm_atomic_helper_damage_iter iter;
struct drm_rect damage;
@ -393,18 +401,17 @@ static void cirrus_primary_plane_helper_atomic_update(struct drm_plane *plane,
if (!drm_dev_enter(&cirrus->dev, &idx))
return;
if (cirrus->format != cirrus_format(fb))
cirrus_format_set(cirrus, fb);
if (cirrus->pitch != cirrus_pitch(fb))
cirrus_pitch_set(cirrus, fb);
if (old_primary_plane_state->format != format)
cirrus_format_set(cirrus, format);
if (old_primary_plane_state->pitch != pitch)
cirrus_pitch_set(cirrus, pitch);
drm_atomic_helper_damage_iter_init(&iter, old_plane_state, plane_state);
drm_atomic_for_each_plane_damage(&iter, &damage) {
unsigned int offset = drm_fb_clip_offset(cirrus->pitch, fb->format, &damage);
unsigned int offset = drm_fb_clip_offset(pitch, format, &damage);
struct iosys_map dst = IOSYS_MAP_INIT_OFFSET(&vaddr, offset);
drm_fb_blit(&dst, &cirrus->pitch, cirrus->format->format,
&shadow_plane_state->data[0], fb, &damage);
drm_fb_blit(&dst, &pitch, format->format, shadow_plane_state->data, fb, &damage);
}
drm_dev_exit(idx);
@ -420,6 +427,8 @@ static struct drm_plane_state *
cirrus_primary_plane_atomic_duplicate_state(struct drm_plane *plane)
{
struct drm_plane_state *plane_state = plane->state;
struct cirrus_primary_plane_state *primary_plane_state =
to_cirrus_primary_plane_state(plane_state);
struct cirrus_primary_plane_state *new_primary_plane_state;
struct drm_shadow_plane_state *new_shadow_plane_state;
@ -432,6 +441,8 @@ cirrus_primary_plane_atomic_duplicate_state(struct drm_plane *plane)
new_shadow_plane_state = &new_primary_plane_state->base;
__drm_gem_duplicate_shadow_plane_state(plane, new_shadow_plane_state);
new_primary_plane_state->format = primary_plane_state->format;
new_primary_plane_state->pitch = primary_plane_state->pitch;
return &new_shadow_plane_state->base;
}