[PATCH 07/16] drm/udl: Convert to atomic-modesetting helpers
Thomas Zimmermann
tzimmermann at suse.de
Mon Sep 19 13:03:59 UTC 2022
Replace simple-KMS helpers with regular atomic-modesetting helpers.
The simple-KMS helpers introduce a mid-layer abstraction without
added functionality. Using regular atomic helpers makes the driver's
implementation more discoverable and simplifies code sharing.
The conversion effectively open-codes the simple-KMS functions and
data structure within udl. No functional changes.
Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
---
drivers/gpu/drm/udl/udl_drv.h | 9 +-
drivers/gpu/drm/udl/udl_modeset.c | 166 ++++++++++++++++++++----------
2 files changed, 121 insertions(+), 54 deletions(-)
diff --git a/drivers/gpu/drm/udl/udl_drv.h b/drivers/gpu/drm/udl/udl_drv.h
index d7a3d495f2e7..e96166ce2919 100644
--- a/drivers/gpu/drm/udl/udl_drv.h
+++ b/drivers/gpu/drm/udl/udl_drv.h
@@ -14,10 +14,13 @@
#include <linux/mm_types.h>
#include <linux/usb.h>
+#include <drm/drm_connector.h>
+#include <drm/drm_crtc.h>
#include <drm/drm_device.h>
+#include <drm/drm_encoder.h>
#include <drm/drm_framebuffer.h>
#include <drm/drm_gem.h>
-#include <drm/drm_simple_kms_helper.h>
+#include <drm/drm_plane.h>
struct drm_mode_create_dumb;
@@ -62,7 +65,9 @@ struct udl_device {
struct device *dev;
struct device *dmadev;
- struct drm_simple_display_pipe display_pipe;
+ struct drm_plane primary_plane;
+ struct drm_crtc crtc;
+ struct drm_encoder encoder;
struct mutex gem_lock;
diff --git a/drivers/gpu/drm/udl/udl_modeset.c b/drivers/gpu/drm/udl/udl_modeset.c
index 7f8bde89396d..f83d0feff434 100644
--- a/drivers/gpu/drm/udl/udl_modeset.c
+++ b/drivers/gpu/drm/udl/udl_modeset.c
@@ -8,6 +8,7 @@
* Copyright (C) 2009 Bernie Thompson <bernie at plugable.com>
*/
+#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_damage_helper.h>
@@ -17,6 +18,7 @@
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_gem_shmem_helper.h>
#include <drm/drm_modeset_helper_vtables.h>
+#include <drm/drm_plane_helper.h>
#include <drm/drm_probe_helper.h>
#include <drm/drm_vblank.h>
@@ -302,61 +304,105 @@ static int udl_handle_damage(struct drm_framebuffer *fb,
}
/*
- * Simple display pipeline
+ * Primary plane
*/
-static const uint32_t udl_simple_display_pipe_formats[] = {
+static const uint32_t udl_primary_plane_formats[] = {
DRM_FORMAT_RGB565,
DRM_FORMAT_XRGB8888,
};
-static void
-udl_simple_display_pipe_enable(struct drm_simple_display_pipe *pipe,
- struct drm_crtc_state *crtc_state,
- struct drm_plane_state *plane_state)
+static const uint64_t udl_primary_plane_fmtmods[] = {
+ DRM_FORMAT_MOD_LINEAR,
+ DRM_FORMAT_MOD_INVALID
+};
+
+static void udl_primary_plane_helper_atomic_update(struct drm_plane *plane,
+ struct drm_atomic_state *state)
{
- struct drm_crtc *crtc = &pipe->crtc;
- struct drm_device *dev = crtc->dev;
+ struct drm_plane_state *plane_state = drm_atomic_get_new_plane_state(state, plane);
+ struct drm_shadow_plane_state *shadow_plane_state = to_drm_shadow_plane_state(plane_state);
struct drm_framebuffer *fb = plane_state->fb;
+ struct drm_plane_state *old_plane_state = drm_atomic_get_old_plane_state(state, plane);
+ struct drm_rect rect;
+
+ if (drm_atomic_helper_damage_merged(old_plane_state, plane_state, &rect))
+ udl_handle_damage(fb, &shadow_plane_state->data[0], &rect);
+}
+
+static void udl_primary_plane_helper_atomic_disable(struct drm_plane *plane,
+ struct drm_atomic_state *state)
+{
+ /*
+ * Keep this function here to avoid calling atomic_update when
+ * the plane is being disabled.
+ *
+ * TODO: Maybe clear the adapter's display buffer from here.
+ */
+}
+
+static const struct drm_plane_helper_funcs udl_primary_plane_helper_funcs = {
+ DRM_GEM_SHADOW_PLANE_HELPER_FUNCS,
+ .atomic_check = drm_plane_helper_atomic_check,
+ .atomic_update = udl_primary_plane_helper_atomic_update,
+ .atomic_disable = udl_primary_plane_helper_atomic_disable,
+};
+
+static const struct drm_plane_funcs udl_primary_plane_funcs = {
+ .update_plane = drm_atomic_helper_update_plane,
+ .disable_plane = drm_atomic_helper_disable_plane,
+ .destroy = drm_plane_cleanup,
+ DRM_GEM_SHADOW_PLANE_FUNCS,
+};
+
+/*
+ * CRTC
+ */
+
+static int udl_crtc_helper_atomic_check(struct drm_crtc *crtc, struct drm_atomic_state *state)
+{
+ struct drm_crtc_state *new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+
+ return drm_atomic_helper_check_crtc_state(new_crtc_state, false);
+}
+
+static void udl_crtc_helper_atomic_enable(struct drm_crtc *crtc, struct drm_atomic_state *state)
+{
+ struct drm_device *dev = crtc->dev;
struct udl_device *udl = to_udl(dev);
+ struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
struct drm_display_mode *mode = &crtc_state->mode;
- struct drm_shadow_plane_state *shadow_plane_state = to_drm_shadow_plane_state(plane_state);
- struct drm_rect clip = DRM_RECT_INIT(0, 0, fb->width, fb->height);
char *buf;
char *wrptr;
int color_depth = UDL_COLOR_DEPTH_16BPP;
buf = (char *)udl->mode_buf;
- /* This first section has to do with setting the base address on the
- * controller associated with the display. There are 2 base
- * pointers, currently, we only use the 16 bpp segment.
+ /*
+ * This first section has to do with setting the base address on
+ * the controller associated with the display. There are 2 base
+ * pointers. Currently, we only use the 16 bpp segment.
*/
+
wrptr = udl_vidreg_lock(buf);
wrptr = udl_set_color_depth(wrptr, color_depth);
/* set base for 16bpp segment to 0 */
wrptr = udl_set_base16bpp(wrptr, 0);
/* set base for 8bpp segment to end of fb */
wrptr = udl_set_base8bpp(wrptr, 2 * mode->vdisplay * mode->hdisplay);
-
wrptr = udl_set_vid_cmds(wrptr, mode);
wrptr = udl_set_blank_mode(wrptr, UDL_BLANK_MODE_ON);
wrptr = udl_vidreg_unlock(wrptr);
-
wrptr = udl_dummy_render(wrptr);
udl->mode_buf_len = wrptr - buf;
- udl_handle_damage(fb, &shadow_plane_state->data[0], &clip);
-
/* enable display */
udl_crtc_write_mode_to_hw(crtc);
}
-static void
-udl_simple_display_pipe_disable(struct drm_simple_display_pipe *pipe)
+static void udl_crtc_helper_atomic_disable(struct drm_crtc *crtc, struct drm_atomic_state *state)
{
- struct drm_crtc *crtc = &pipe->crtc;
struct drm_device *dev = crtc->dev;
struct urb *urb;
char *buf;
@@ -374,27 +420,27 @@ udl_simple_display_pipe_disable(struct drm_simple_display_pipe *pipe)
udl_submit_urb(dev, urb, buf - (char *)urb->transfer_buffer);
}
-static void
-udl_simple_display_pipe_update(struct drm_simple_display_pipe *pipe,
- struct drm_plane_state *old_plane_state)
-{
- struct drm_plane_state *state = pipe->plane.state;
- struct drm_shadow_plane_state *shadow_plane_state = to_drm_shadow_plane_state(state);
- struct drm_framebuffer *fb = state->fb;
- struct drm_rect rect;
+static const struct drm_crtc_helper_funcs udl_crtc_helper_funcs = {
+ .atomic_check = udl_crtc_helper_atomic_check,
+ .atomic_enable = udl_crtc_helper_atomic_enable,
+ .atomic_disable = udl_crtc_helper_atomic_disable,
+};
- if (!fb)
- return;
+static const struct drm_crtc_funcs udl_crtc_funcs = {
+ .reset = drm_atomic_helper_crtc_reset,
+ .destroy = drm_crtc_cleanup,
+ .set_config = drm_atomic_helper_set_config,
+ .page_flip = drm_atomic_helper_page_flip,
+ .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
+};
- if (drm_atomic_helper_damage_merged(old_plane_state, state, &rect))
- udl_handle_damage(fb, &shadow_plane_state->data[0], &rect);
-}
+/*
+ * Encoder
+ */
-static const struct drm_simple_display_pipe_funcs udl_simple_display_pipe_funcs = {
- .enable = udl_simple_display_pipe_enable,
- .disable = udl_simple_display_pipe_disable,
- .update = udl_simple_display_pipe_update,
- DRM_GEM_SIMPLE_DISPLAY_PIPE_SHADOW_PLANE_FUNCS,
+static const struct drm_encoder_funcs udl_encoder_funcs = {
+ .destroy = drm_encoder_cleanup,
};
/*
@@ -534,7 +580,7 @@ static enum drm_mode_status udl_mode_config_mode_valid(struct drm_device *dev,
return MODE_OK;
}
-static const struct drm_mode_config_funcs udl_mode_funcs = {
+static const struct drm_mode_config_funcs udl_mode_config_funcs = {
.fb_create = drm_gem_fb_create_with_dirty,
.mode_valid = udl_mode_config_mode_valid,
.atomic_check = drm_atomic_helper_check,
@@ -543,8 +589,10 @@ static const struct drm_mode_config_funcs udl_mode_funcs = {
int udl_modeset_init(struct drm_device *dev)
{
- size_t format_count = ARRAY_SIZE(udl_simple_display_pipe_formats);
struct udl_device *udl = to_udl(dev);
+ struct drm_plane *primary_plane;
+ struct drm_crtc *crtc;
+ struct drm_encoder *encoder;
struct drm_connector *connector;
int ret;
@@ -554,28 +602,42 @@ int udl_modeset_init(struct drm_device *dev)
dev->mode_config.min_width = 640;
dev->mode_config.min_height = 480;
-
dev->mode_config.max_width = 2048;
dev->mode_config.max_height = 2048;
-
- dev->mode_config.prefer_shadow = 0;
dev->mode_config.preferred_depth = 16;
+ dev->mode_config.funcs = &udl_mode_config_funcs;
+
+ primary_plane = &udl->primary_plane;
+ ret = drm_universal_plane_init(dev, primary_plane, 0,
+ &udl_primary_plane_funcs,
+ udl_primary_plane_formats,
+ ARRAY_SIZE(udl_primary_plane_formats),
+ udl_primary_plane_fmtmods,
+ DRM_PLANE_TYPE_PRIMARY, NULL);
+ if (ret)
+ return ret;
+ drm_plane_helper_add(primary_plane, &udl_primary_plane_helper_funcs);
+ drm_plane_enable_fb_damage_clips(primary_plane);
+
+ crtc = &udl->crtc;
+ ret = drm_crtc_init_with_planes(dev, crtc, primary_plane, NULL,
+ &udl_crtc_funcs, NULL);
+ if (ret)
+ return ret;
+ drm_crtc_helper_add(crtc, &udl_crtc_helper_funcs);
- dev->mode_config.funcs = &udl_mode_funcs;
+ encoder = &udl->encoder;
+ ret = drm_encoder_init(dev, encoder, &udl_encoder_funcs, DRM_MODE_ENCODER_DAC, NULL);
+ if (ret)
+ return ret;
+ encoder->possible_crtcs = drm_crtc_mask(crtc);
connector = udl_connector_init(dev);
if (IS_ERR(connector))
return PTR_ERR(connector);
-
- format_count = ARRAY_SIZE(udl_simple_display_pipe_formats);
-
- ret = drm_simple_display_pipe_init(dev, &udl->display_pipe,
- &udl_simple_display_pipe_funcs,
- udl_simple_display_pipe_formats,
- format_count, NULL, connector);
+ ret = drm_connector_attach_encoder(connector, encoder);
if (ret)
return ret;
- drm_plane_enable_fb_damage_clips(&udl->display_pipe.plane);
drm_mode_config_reset(dev);
--
2.37.3
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