diff options
Diffstat (limited to 'drivers/gpu/drm/sun4i/sun8i_ui_layer.c')
-rw-r--r-- | drivers/gpu/drm/sun4i/sun8i_ui_layer.c | 349 |
1 files changed, 349 insertions, 0 deletions
diff --git a/drivers/gpu/drm/sun4i/sun8i_ui_layer.c b/drivers/gpu/drm/sun4i/sun8i_ui_layer.c new file mode 100644 index 000000000000..28d7c48d50fe --- /dev/null +++ b/drivers/gpu/drm/sun4i/sun8i_ui_layer.c @@ -0,0 +1,349 @@ +/* + * Copyright (C) Icenowy Zheng <icenowy@aosc.io> + * + * Based on sun4i_layer.h, which is: + * Copyright (C) 2015 Free Electrons + * Copyright (C) 2015 NextThing Co + * + * Maxime Ripard <maxime.ripard@free-electrons.com> + * + * 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_ui_layer.h" +#include "sun8i_mixer.h" +#include "sun8i_ui_scaler.h" + +static void sun8i_ui_layer_enable(struct sun8i_mixer *mixer, int channel, + int overlay, bool enable) +{ + u32 val; + + DRM_DEBUG_DRIVER("%sabling channel %d overlay %d\n", + enable ? "En" : "Dis", channel, overlay); + + if (enable) + val = SUN8I_MIXER_CHAN_UI_LAYER_ATTR_EN; + else + val = 0; + + regmap_update_bits(mixer->engine.regs, + SUN8I_MIXER_CHAN_UI_LAYER_ATTR(channel, overlay), + SUN8I_MIXER_CHAN_UI_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_ui_layer_update_coord(struct sun8i_mixer *mixer, int channel, + int overlay, struct drm_plane *plane) +{ + struct drm_plane_state *state = plane->state; + u32 src_w, src_h, dst_w, dst_h; + u32 outsize, insize; + u32 hphase, vphase; + + DRM_DEBUG_DRIVER("Updating UI channel %d overlay %d\n", + channel, overlay); + + src_w = drm_rect_width(&state->src) >> 16; + src_h = drm_rect_height(&state->src) >> 16; + dst_w = drm_rect_width(&state->dst); + dst_h = drm_rect_height(&state->dst); + + hphase = state->src.x1 & 0xffff; + vphase = state->src.y1 & 0xffff; + + insize = SUN8I_MIXER_SIZE(src_w, src_h); + outsize = SUN8I_MIXER_SIZE(dst_w, dst_h); + + if (plane->type == DRM_PLANE_TYPE_PRIMARY) { + bool interlaced = false; + u32 val; + + DRM_DEBUG_DRIVER("Primary layer, updating global size W: %u H: %u\n", + dst_w, dst_h); + regmap_write(mixer->engine.regs, + SUN8I_MIXER_GLOBAL_SIZE, + outsize); + regmap_write(mixer->engine.regs, SUN8I_MIXER_BLEND_OUTSIZE, + outsize); + + if (state->crtc) + interlaced = state->crtc->state->adjusted_mode.flags + & DRM_MODE_FLAG_INTERLACE; + + if (interlaced) + val = SUN8I_MIXER_BLEND_OUTCTL_INTERLACED; + else + val = 0; + + regmap_update_bits(mixer->engine.regs, + SUN8I_MIXER_BLEND_OUTCTL, + SUN8I_MIXER_BLEND_OUTCTL_INTERLACED, + val); + + DRM_DEBUG_DRIVER("Switching display mixer interlaced mode %s\n", + interlaced ? "on" : "off"); + } + + /* Set height and width */ + DRM_DEBUG_DRIVER("Layer source offset X: %d Y: %d\n", + state->src.x1 >> 16, state->src.y1 >> 16); + DRM_DEBUG_DRIVER("Layer source size W: %d H: %d\n", src_w, src_h); + regmap_write(mixer->engine.regs, + SUN8I_MIXER_CHAN_UI_LAYER_SIZE(channel, overlay), + insize); + regmap_write(mixer->engine.regs, + SUN8I_MIXER_CHAN_UI_OVL_SIZE(channel), + insize); + + if (insize != outsize || hphase || vphase) { + u32 hscale, vscale; + + DRM_DEBUG_DRIVER("HW scaling is enabled\n"); + + hscale = state->src_w / state->crtc_w; + vscale = state->src_h / state->crtc_h; + + sun8i_ui_scaler_setup(mixer, channel, src_w, src_h, dst_w, + dst_h, hscale, vscale, hphase, vphase); + sun8i_ui_scaler_enable(mixer, channel, true); + } else { + DRM_DEBUG_DRIVER("HW scaling is not needed\n"); + sun8i_ui_scaler_enable(mixer, channel, false); + } + + /* Set base coordinates */ + DRM_DEBUG_DRIVER("Layer destination coordinates X: %d Y: %d\n", + state->dst.x1, state->dst.y1); + DRM_DEBUG_DRIVER("Layer destination size W: %d H: %d\n", dst_w, dst_h); + 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), + outsize); + + return 0; +} + +static int sun8i_ui_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 || !fmt_info->rgb) { + DRM_DEBUG_DRIVER("Invalid format\n"); + return -EINVAL; + } + + val = fmt_info->de2_fmt << SUN8I_MIXER_CHAN_UI_LAYER_ATTR_FBFMT_OFFSET; + regmap_update_bits(mixer->engine.regs, + SUN8I_MIXER_CHAN_UI_LAYER_ATTR(channel, overlay), + SUN8I_MIXER_CHAN_UI_LAYER_ATTR_FBFMT_MASK, val); + + return 0; +} + +static int sun8i_ui_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_UI_LAYER_PITCH(channel, overlay), + fb->pitches[0]); + + DRM_DEBUG_DRIVER("Setting buffer address to %pad\n", &paddr); + + regmap_write(mixer->engine.regs, + SUN8I_MIXER_CHAN_UI_LAYER_TOP_LADDR(channel, overlay), + lower_32_bits(paddr)); + + return 0; +} + +static int sun8i_ui_layer_atomic_check(struct drm_plane *plane, + struct drm_plane_state *state) +{ + struct sun8i_ui_layer *layer = plane_to_sun8i_ui_layer(plane); + struct drm_crtc *crtc = state->crtc; + struct drm_crtc_state *crtc_state; + int min_scale, max_scale; + 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; + + min_scale = DRM_PLANE_HELPER_NO_SCALING; + max_scale = DRM_PLANE_HELPER_NO_SCALING; + + if (layer->mixer->cfg->scaler_mask & BIT(layer->channel)) { + min_scale = SUN8I_UI_SCALER_SCALE_MIN; + max_scale = SUN8I_UI_SCALER_SCALE_MAX; + } + + return drm_atomic_helper_check_plane_state(state, crtc_state, &clip, + min_scale, max_scale, + true, true); +} + +static void sun8i_ui_layer_atomic_disable(struct drm_plane *plane, + struct drm_plane_state *old_state) +{ + struct sun8i_ui_layer *layer = plane_to_sun8i_ui_layer(plane); + struct sun8i_mixer *mixer = layer->mixer; + + sun8i_ui_layer_enable(mixer, layer->channel, layer->overlay, false); +} + +static void sun8i_ui_layer_atomic_update(struct drm_plane *plane, + struct drm_plane_state *old_state) +{ + struct sun8i_ui_layer *layer = plane_to_sun8i_ui_layer(plane); + struct sun8i_mixer *mixer = layer->mixer; + + if (!plane->state->visible) { + sun8i_ui_layer_enable(mixer, layer->channel, + layer->overlay, false); + return; + } + + sun8i_ui_layer_update_coord(mixer, layer->channel, + layer->overlay, plane); + sun8i_ui_layer_update_formats(mixer, layer->channel, + layer->overlay, plane); + sun8i_ui_layer_update_buffer(mixer, layer->channel, + layer->overlay, plane); + sun8i_ui_layer_enable(mixer, layer->channel, layer->overlay, true); +} + +static struct drm_plane_helper_funcs sun8i_ui_layer_helper_funcs = { + .atomic_check = sun8i_ui_layer_atomic_check, + .atomic_disable = sun8i_ui_layer_atomic_disable, + .atomic_update = sun8i_ui_layer_atomic_update, +}; + +static const struct drm_plane_funcs sun8i_ui_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, +}; + +static const u32 sun8i_ui_layer_formats[] = { + DRM_FORMAT_ABGR1555, + DRM_FORMAT_ABGR4444, + DRM_FORMAT_ABGR8888, + DRM_FORMAT_ARGB1555, + DRM_FORMAT_ARGB4444, + DRM_FORMAT_ARGB8888, + DRM_FORMAT_BGR565, + DRM_FORMAT_BGR888, + DRM_FORMAT_BGRA5551, + DRM_FORMAT_BGRA4444, + DRM_FORMAT_BGRA8888, + DRM_FORMAT_BGRX8888, + DRM_FORMAT_RGB565, + DRM_FORMAT_RGB888, + DRM_FORMAT_RGBA4444, + DRM_FORMAT_RGBA5551, + DRM_FORMAT_RGBA8888, + DRM_FORMAT_RGBX8888, + DRM_FORMAT_XBGR8888, + DRM_FORMAT_XRGB8888, +}; + +struct sun8i_ui_layer *sun8i_ui_layer_init_one(struct drm_device *drm, + struct sun8i_mixer *mixer, + int index) +{ + enum drm_plane_type type = DRM_PLANE_TYPE_OVERLAY; + int channel = mixer->cfg->vi_num + index; + struct sun8i_ui_layer *layer; + int ret; + + layer = devm_kzalloc(drm->dev, sizeof(*layer), GFP_KERNEL); + if (!layer) + return ERR_PTR(-ENOMEM); + + if (index == 0) + type = DRM_PLANE_TYPE_PRIMARY; + + /* possible crtcs are set later */ + ret = drm_universal_plane_init(drm, &layer->plane, 0, + &sun8i_ui_layer_funcs, + sun8i_ui_layer_formats, + ARRAY_SIZE(sun8i_ui_layer_formats), + NULL, type, 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, channel); + if (ret) { + dev_err(drm->dev, "Couldn't add zpos property\n"); + return ERR_PTR(ret); + } + + drm_plane_helper_add(&layer->plane, &sun8i_ui_layer_helper_funcs); + layer->mixer = mixer; + layer->channel = channel; + layer->overlay = 0; + + return layer; +} |