--- /dev/null
+/*
+ * Copyright (C) Jernej Skrabec <jernej.skrabec@siol.net>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_plane_helper.h>
+#include <drm/drmP.h>
+
+#include "sun8i_vi_layer.h"
+#include "sun8i_mixer.h"
+
+static void sun8i_vi_layer_enable(struct sun8i_mixer *mixer, int channel,
+ int overlay, bool enable)
+{
+ u32 val;
+
+ DRM_DEBUG_DRIVER("%sabling VI channel %d overlay %d\n",
+ enable ? "En" : "Dis", channel, overlay);
+
+ if (enable)
+ val = SUN8I_MIXER_CHAN_VI_LAYER_ATTR_EN;
+ else
+ val = 0;
+
+ regmap_update_bits(mixer->engine.regs,
+ SUN8I_MIXER_CHAN_VI_LAYER_ATTR(channel, overlay),
+ SUN8I_MIXER_CHAN_VI_LAYER_ATTR_EN, val);
+
+ if (enable)
+ val = SUN8I_MIXER_BLEND_PIPE_CTL_EN(channel);
+ else
+ val = 0;
+
+ regmap_update_bits(mixer->engine.regs,
+ SUN8I_MIXER_BLEND_PIPE_CTL,
+ SUN8I_MIXER_BLEND_PIPE_CTL_EN(channel), val);
+}
+
+static int sun8i_vi_layer_update_coord(struct sun8i_mixer *mixer, int channel,
+ int overlay, struct drm_plane *plane)
+{
+ struct drm_plane_state *state = plane->state;
+ u32 width, height, size;
+
+ DRM_DEBUG_DRIVER("Updating VI channel %d overlay %d\n",
+ channel, overlay);
+ /*
+ * Same source and destination width and height are guaranteed
+ * by atomic check function.
+ */
+ width = drm_rect_width(&state->dst);
+ height = drm_rect_height(&state->dst);
+ size = SUN8I_MIXER_SIZE(width, height);
+
+ /* Set height and width */
+ DRM_DEBUG_DRIVER("Layer size W: %u H: %u\n", width, height);
+ regmap_write(mixer->engine.regs,
+ SUN8I_MIXER_CHAN_VI_LAYER_SIZE(channel, overlay),
+ size);
+ regmap_write(mixer->engine.regs,
+ SUN8I_MIXER_CHAN_VI_OVL_SIZE(channel),
+ size);
+
+ /* Set base coordinates */
+ DRM_DEBUG_DRIVER("Layer coordinates X: %d Y: %d\n",
+ state->dst.x1, state->dst.y1);
+ regmap_write(mixer->engine.regs,
+ SUN8I_MIXER_BLEND_ATTR_COORD(channel),
+ SUN8I_MIXER_COORD(state->dst.x1, state->dst.y1));
+ regmap_write(mixer->engine.regs,
+ SUN8I_MIXER_BLEND_ATTR_INSIZE(channel),
+ size);
+
+ return 0;
+}
+
+static int sun8i_vi_layer_update_formats(struct sun8i_mixer *mixer, int channel,
+ int overlay, struct drm_plane *plane)
+{
+ struct drm_plane_state *state = plane->state;
+ const struct de2_fmt_info *fmt_info;
+ u32 val;
+
+ fmt_info = sun8i_mixer_format_info(state->fb->format->format);
+ if (!fmt_info) {
+ DRM_DEBUG_DRIVER("Invalid format\n");
+ return -EINVAL;
+ }
+
+ val = fmt_info->de2_fmt << SUN8I_MIXER_CHAN_VI_LAYER_ATTR_FBFMT_OFFSET;
+ regmap_update_bits(mixer->engine.regs,
+ SUN8I_MIXER_CHAN_VI_LAYER_ATTR(channel, overlay),
+ SUN8I_MIXER_CHAN_VI_LAYER_ATTR_FBFMT_MASK |
+ SUN8I_MIXER_CHAN_VI_LAYER_ATTR_RGB_MODE,
+ val | SUN8I_MIXER_CHAN_VI_LAYER_ATTR_RGB_MODE);
+
+ return 0;
+}
+
+static int sun8i_vi_layer_update_buffer(struct sun8i_mixer *mixer, int channel,
+ int overlay, struct drm_plane *plane)
+{
+ struct drm_plane_state *state = plane->state;
+ struct drm_framebuffer *fb = state->fb;
+ struct drm_gem_cma_object *gem;
+ dma_addr_t paddr;
+ int bpp;
+
+ /* Get the physical address of the buffer in memory */
+ gem = drm_fb_cma_get_gem_obj(fb, 0);
+
+ DRM_DEBUG_DRIVER("Using GEM @ %pad\n", &gem->paddr);
+
+ /* Compute the start of the displayed memory */
+ bpp = fb->format->cpp[0];
+ paddr = gem->paddr + fb->offsets[0];
+
+ /* Fixup framebuffer address for src coordinates */
+ paddr += (state->src.x1 >> 16) * bpp;
+ paddr += (state->src.y1 >> 16) * fb->pitches[0];
+
+ /* Set the line width */
+ DRM_DEBUG_DRIVER("Layer line width: %d bytes\n", fb->pitches[0]);
+ regmap_write(mixer->engine.regs,
+ SUN8I_MIXER_CHAN_VI_LAYER_PITCH(channel, overlay, 0),
+ fb->pitches[0]);
+
+ DRM_DEBUG_DRIVER("Setting buffer address to %pad\n", &paddr);
+
+ regmap_write(mixer->engine.regs,
+ SUN8I_MIXER_CHAN_VI_LAYER_TOP_LADDR(channel, overlay, 0),
+ lower_32_bits(paddr));
+
+ return 0;
+}
+
+static int sun8i_vi_layer_atomic_check(struct drm_plane *plane,
+ struct drm_plane_state *state)
+{
+ struct drm_crtc *crtc = state->crtc;
+ struct drm_crtc_state *crtc_state;
+ struct drm_rect clip;
+
+ if (!crtc)
+ return 0;
+
+ crtc_state = drm_atomic_get_existing_crtc_state(state->state, crtc);
+ if (WARN_ON(!crtc_state))
+ return -EINVAL;
+
+ clip.x1 = 0;
+ clip.y1 = 0;
+ clip.x2 = crtc_state->adjusted_mode.hdisplay;
+ clip.y2 = crtc_state->adjusted_mode.vdisplay;
+
+ return drm_atomic_helper_check_plane_state(state, crtc_state, &clip,
+ DRM_PLANE_HELPER_NO_SCALING,
+ DRM_PLANE_HELPER_NO_SCALING,
+ true, true);
+}
+
+static void sun8i_vi_layer_atomic_disable(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
+{
+ struct sun8i_vi_layer *layer = plane_to_sun8i_vi_layer(plane);
+ struct sun8i_mixer *mixer = layer->mixer;
+
+ sun8i_vi_layer_enable(mixer, layer->channel, layer->overlay, false);
+}
+
+static void sun8i_vi_layer_atomic_update(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
+{
+ struct sun8i_vi_layer *layer = plane_to_sun8i_vi_layer(plane);
+ struct sun8i_mixer *mixer = layer->mixer;
+
+ if (!plane->state->visible) {
+ sun8i_vi_layer_enable(mixer, layer->channel,
+ layer->overlay, false);
+ return;
+ }
+
+ sun8i_vi_layer_update_coord(mixer, layer->channel,
+ layer->overlay, plane);
+ sun8i_vi_layer_update_formats(mixer, layer->channel,
+ layer->overlay, plane);
+ sun8i_vi_layer_update_buffer(mixer, layer->channel,
+ layer->overlay, plane);
+ sun8i_vi_layer_enable(mixer, layer->channel, layer->overlay, true);
+}
+
+static struct drm_plane_helper_funcs sun8i_vi_layer_helper_funcs = {
+ .atomic_check = sun8i_vi_layer_atomic_check,
+ .atomic_disable = sun8i_vi_layer_atomic_disable,
+ .atomic_update = sun8i_vi_layer_atomic_update,
+};
+
+static const struct drm_plane_funcs sun8i_vi_layer_funcs = {
+ .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
+ .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
+ .destroy = drm_plane_cleanup,
+ .disable_plane = drm_atomic_helper_disable_plane,
+ .reset = drm_atomic_helper_plane_reset,
+ .update_plane = drm_atomic_helper_update_plane,
+};
+
+/*
+ * While all RGB formats are supported, VI planes don't support
+ * alpha blending, so there is no point having formats with alpha
+ * channel if their opaque analog exist.
+ */
+static const u32 sun8i_vi_layer_formats[] = {
+ DRM_FORMAT_ABGR1555,
+ DRM_FORMAT_ABGR4444,
+ DRM_FORMAT_ARGB1555,
+ DRM_FORMAT_ARGB4444,
+ DRM_FORMAT_BGR565,
+ DRM_FORMAT_BGR888,
+ DRM_FORMAT_BGRA5551,
+ DRM_FORMAT_BGRA4444,
+ DRM_FORMAT_BGRX8888,
+ DRM_FORMAT_RGB565,
+ DRM_FORMAT_RGB888,
+ DRM_FORMAT_RGBA4444,
+ DRM_FORMAT_RGBA5551,
+ DRM_FORMAT_RGBX8888,
+ DRM_FORMAT_XBGR8888,
+ DRM_FORMAT_XRGB8888,
+};
+
+struct sun8i_vi_layer *sun8i_vi_layer_init_one(struct drm_device *drm,
+ struct sun8i_mixer *mixer,
+ int index)
+{
+ struct sun8i_vi_layer *layer;
+ int ret;
+
+ layer = devm_kzalloc(drm->dev, sizeof(*layer), GFP_KERNEL);
+ if (!layer)
+ return ERR_PTR(-ENOMEM);
+
+ /* possible crtcs are set later */
+ ret = drm_universal_plane_init(drm, &layer->plane, 0,
+ &sun8i_vi_layer_funcs,
+ sun8i_vi_layer_formats,
+ ARRAY_SIZE(sun8i_vi_layer_formats),
+ NULL, DRM_PLANE_TYPE_OVERLAY, NULL);
+ if (ret) {
+ dev_err(drm->dev, "Couldn't initialize layer\n");
+ return ERR_PTR(ret);
+ }
+
+ /* fixed zpos for now */
+ ret = drm_plane_create_zpos_immutable_property(&layer->plane, index);
+ if (ret) {
+ dev_err(drm->dev, "Couldn't add zpos property\n");
+ return ERR_PTR(ret);
+ }
+
+ drm_plane_helper_add(&layer->plane, &sun8i_vi_layer_helper_funcs);
+ layer->mixer = mixer;
+ layer->channel = index;
+ layer->overlay = 0;
+
+ return layer;
+}
--- /dev/null
+/*
+ * Copyright (C) Jernej Skrabec <jernej.skrabec@siol.net>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#ifndef _SUN8I_VI_LAYER_H_
+#define _SUN8I_VI_LAYER_H_
+
+#include <drm/drm_plane.h>
+
+#define SUN8I_MIXER_CHAN_VI_LAYER_ATTR(ch, layer) \
+ (0x2000 + 0x1000 * (ch) + 0x30 * (layer) + 0x0)
+#define SUN8I_MIXER_CHAN_VI_LAYER_SIZE(ch, layer) \
+ (0x2000 + 0x1000 * (ch) + 0x30 * (layer) + 0x4)
+#define SUN8I_MIXER_CHAN_VI_LAYER_COORD(ch, layer) \
+ (0x2000 + 0x1000 * (ch) + 0x30 * (layer) + 0x8)
+#define SUN8I_MIXER_CHAN_VI_LAYER_PITCH(ch, layer, plane) \
+ (0x2000 + 0x1000 * (ch) + 0x30 * (layer) + 0xc + 4 * (plane))
+#define SUN8I_MIXER_CHAN_VI_LAYER_TOP_LADDR(ch, layer, plane) \
+ (0x2000 + 0x1000 * (ch) + 0x30 * (layer) + 0x18 + 4 * (plane))
+#define SUN8I_MIXER_CHAN_VI_OVL_SIZE(ch) (0x2000 + 0x1000 * (ch) + 0xe8)
+
+#define SUN8I_MIXER_CHAN_VI_LAYER_ATTR_EN BIT(0)
+/* RGB mode should be set for RGB formats and cleared for YCbCr */
+#define SUN8I_MIXER_CHAN_VI_LAYER_ATTR_RGB_MODE BIT(15)
+#define SUN8I_MIXER_CHAN_VI_LAYER_ATTR_FBFMT_OFFSET 8
+#define SUN8I_MIXER_CHAN_VI_LAYER_ATTR_FBFMT_MASK GENMASK(12, 8)
+
+struct sun8i_mixer;
+
+struct sun8i_vi_layer {
+ struct drm_plane plane;
+ struct sun8i_mixer *mixer;
+ int channel;
+ int overlay;
+};
+
+static inline struct sun8i_vi_layer *
+plane_to_sun8i_vi_layer(struct drm_plane *plane)
+{
+ return container_of(plane, struct sun8i_vi_layer, plane);
+}
+
+struct sun8i_vi_layer *sun8i_vi_layer_init_one(struct drm_device *drm,
+ struct sun8i_mixer *mixer,
+ int index);
+#endif /* _SUN8I_VI_LAYER_H_ */
projects / kernel.git / commitdiff