420 lines
12 KiB
C
420 lines
12 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2013 Red Hat
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* Author: Rob Clark <robdclark@gmail.com>
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*/
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#include <drm/drm_atomic.h>
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#include <drm/drm_damage_helper.h>
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#include <drm/drm_fourcc.h>
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#include <drm/drm_framebuffer.h>
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#include <drm/drm_gem_atomic_helper.h>
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#include "mdp4_kms.h"
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#define DOWN_SCALE_MAX 8
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#define UP_SCALE_MAX 8
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struct mdp4_plane {
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struct drm_plane base;
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const char *name;
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enum mdp4_pipe pipe;
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uint32_t caps;
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uint32_t nformats;
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uint32_t formats[32];
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bool enabled;
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};
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#define to_mdp4_plane(x) container_of(x, struct mdp4_plane, base)
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/* MDP format helper functions */
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static inline
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enum mdp4_frame_format mdp4_get_frame_format(struct drm_framebuffer *fb)
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{
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bool is_tile = false;
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if (fb->modifier == DRM_FORMAT_MOD_SAMSUNG_64_32_TILE)
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is_tile = true;
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if (fb->format->format == DRM_FORMAT_NV12 && is_tile)
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return FRAME_TILE_YCBCR_420;
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return FRAME_LINEAR;
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}
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static void mdp4_plane_set_scanout(struct drm_plane *plane,
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struct drm_framebuffer *fb);
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static int mdp4_plane_mode_set(struct drm_plane *plane,
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struct drm_crtc *crtc, struct drm_framebuffer *fb,
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int crtc_x, int crtc_y,
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unsigned int crtc_w, unsigned int crtc_h,
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uint32_t src_x, uint32_t src_y,
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uint32_t src_w, uint32_t src_h);
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static struct mdp4_kms *get_kms(struct drm_plane *plane)
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{
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struct msm_drm_private *priv = plane->dev->dev_private;
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return to_mdp4_kms(to_mdp_kms(priv->kms));
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}
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static void mdp4_plane_destroy(struct drm_plane *plane)
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{
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struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
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drm_plane_cleanup(plane);
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kfree(mdp4_plane);
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}
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/* helper to install properties which are common to planes and crtcs */
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static void mdp4_plane_install_properties(struct drm_plane *plane,
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struct drm_mode_object *obj)
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{
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// XXX
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}
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static int mdp4_plane_set_property(struct drm_plane *plane,
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struct drm_property *property, uint64_t val)
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{
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// XXX
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return -EINVAL;
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}
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static const struct drm_plane_funcs mdp4_plane_funcs = {
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.update_plane = drm_atomic_helper_update_plane,
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.disable_plane = drm_atomic_helper_disable_plane,
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.destroy = mdp4_plane_destroy,
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.set_property = mdp4_plane_set_property,
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.reset = drm_atomic_helper_plane_reset,
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.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
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.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
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};
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static int mdp4_plane_prepare_fb(struct drm_plane *plane,
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struct drm_plane_state *new_state)
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{
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struct msm_drm_private *priv = plane->dev->dev_private;
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struct msm_kms *kms = priv->kms;
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if (!new_state->fb)
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return 0;
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drm_gem_plane_helper_prepare_fb(plane, new_state);
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return msm_framebuffer_prepare(new_state->fb, kms->aspace, false);
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}
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static void mdp4_plane_cleanup_fb(struct drm_plane *plane,
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struct drm_plane_state *old_state)
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{
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struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
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struct mdp4_kms *mdp4_kms = get_kms(plane);
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struct msm_kms *kms = &mdp4_kms->base.base;
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struct drm_framebuffer *fb = old_state->fb;
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if (!fb)
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return;
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DBG("%s: cleanup: FB[%u]", mdp4_plane->name, fb->base.id);
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msm_framebuffer_cleanup(fb, kms->aspace, false);
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}
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static int mdp4_plane_atomic_check(struct drm_plane *plane,
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struct drm_atomic_state *state)
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{
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return 0;
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}
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static void mdp4_plane_atomic_update(struct drm_plane *plane,
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struct drm_atomic_state *state)
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{
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struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
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plane);
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int ret;
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ret = mdp4_plane_mode_set(plane,
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new_state->crtc, new_state->fb,
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new_state->crtc_x, new_state->crtc_y,
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new_state->crtc_w, new_state->crtc_h,
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new_state->src_x, new_state->src_y,
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new_state->src_w, new_state->src_h);
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/* atomic_check should have ensured that this doesn't fail */
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WARN_ON(ret < 0);
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}
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static const struct drm_plane_helper_funcs mdp4_plane_helper_funcs = {
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.prepare_fb = mdp4_plane_prepare_fb,
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.cleanup_fb = mdp4_plane_cleanup_fb,
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.atomic_check = mdp4_plane_atomic_check,
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.atomic_update = mdp4_plane_atomic_update,
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};
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static void mdp4_plane_set_scanout(struct drm_plane *plane,
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struct drm_framebuffer *fb)
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{
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struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
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struct mdp4_kms *mdp4_kms = get_kms(plane);
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struct msm_kms *kms = &mdp4_kms->base.base;
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enum mdp4_pipe pipe = mdp4_plane->pipe;
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mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_STRIDE_A(pipe),
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MDP4_PIPE_SRC_STRIDE_A_P0(fb->pitches[0]) |
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MDP4_PIPE_SRC_STRIDE_A_P1(fb->pitches[1]));
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mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_STRIDE_B(pipe),
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MDP4_PIPE_SRC_STRIDE_B_P2(fb->pitches[2]) |
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MDP4_PIPE_SRC_STRIDE_B_P3(fb->pitches[3]));
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mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP0_BASE(pipe),
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msm_framebuffer_iova(fb, kms->aspace, 0));
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mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP1_BASE(pipe),
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msm_framebuffer_iova(fb, kms->aspace, 1));
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mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP2_BASE(pipe),
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msm_framebuffer_iova(fb, kms->aspace, 2));
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mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP3_BASE(pipe),
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msm_framebuffer_iova(fb, kms->aspace, 3));
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}
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static void mdp4_write_csc_config(struct mdp4_kms *mdp4_kms,
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enum mdp4_pipe pipe, struct csc_cfg *csc)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(csc->matrix); i++) {
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mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_MV(pipe, i),
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csc->matrix[i]);
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}
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for (i = 0; i < ARRAY_SIZE(csc->post_bias) ; i++) {
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mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_PRE_BV(pipe, i),
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csc->pre_bias[i]);
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mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_POST_BV(pipe, i),
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csc->post_bias[i]);
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}
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for (i = 0; i < ARRAY_SIZE(csc->post_clamp) ; i++) {
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mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_PRE_LV(pipe, i),
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csc->pre_clamp[i]);
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mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_POST_LV(pipe, i),
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csc->post_clamp[i]);
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}
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}
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#define MDP4_VG_PHASE_STEP_DEFAULT 0x20000000
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static int mdp4_plane_mode_set(struct drm_plane *plane,
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struct drm_crtc *crtc, struct drm_framebuffer *fb,
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int crtc_x, int crtc_y,
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unsigned int crtc_w, unsigned int crtc_h,
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uint32_t src_x, uint32_t src_y,
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uint32_t src_w, uint32_t src_h)
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{
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struct drm_device *dev = plane->dev;
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struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
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struct mdp4_kms *mdp4_kms = get_kms(plane);
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enum mdp4_pipe pipe = mdp4_plane->pipe;
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const struct mdp_format *format;
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uint32_t op_mode = 0;
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uint32_t phasex_step = MDP4_VG_PHASE_STEP_DEFAULT;
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uint32_t phasey_step = MDP4_VG_PHASE_STEP_DEFAULT;
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enum mdp4_frame_format frame_type;
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if (!(crtc && fb)) {
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DBG("%s: disabled!", mdp4_plane->name);
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return 0;
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}
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frame_type = mdp4_get_frame_format(fb);
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/* src values are in Q16 fixed point, convert to integer: */
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src_x = src_x >> 16;
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src_y = src_y >> 16;
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src_w = src_w >> 16;
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src_h = src_h >> 16;
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DBG("%s: FB[%u] %u,%u,%u,%u -> CRTC[%u] %d,%d,%u,%u", mdp4_plane->name,
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fb->base.id, src_x, src_y, src_w, src_h,
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crtc->base.id, crtc_x, crtc_y, crtc_w, crtc_h);
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format = to_mdp_format(msm_framebuffer_format(fb));
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if (src_w > (crtc_w * DOWN_SCALE_MAX)) {
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DRM_DEV_ERROR(dev->dev, "Width down scaling exceeds limits!\n");
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return -ERANGE;
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}
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if (src_h > (crtc_h * DOWN_SCALE_MAX)) {
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DRM_DEV_ERROR(dev->dev, "Height down scaling exceeds limits!\n");
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return -ERANGE;
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}
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if (crtc_w > (src_w * UP_SCALE_MAX)) {
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DRM_DEV_ERROR(dev->dev, "Width up scaling exceeds limits!\n");
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return -ERANGE;
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}
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if (crtc_h > (src_h * UP_SCALE_MAX)) {
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DRM_DEV_ERROR(dev->dev, "Height up scaling exceeds limits!\n");
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return -ERANGE;
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}
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if (src_w != crtc_w) {
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uint32_t sel_unit = SCALE_FIR;
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op_mode |= MDP4_PIPE_OP_MODE_SCALEX_EN;
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if (MDP_FORMAT_IS_YUV(format)) {
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if (crtc_w > src_w)
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sel_unit = SCALE_PIXEL_RPT;
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else if (crtc_w <= (src_w / 4))
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sel_unit = SCALE_MN_PHASE;
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op_mode |= MDP4_PIPE_OP_MODE_SCALEX_UNIT_SEL(sel_unit);
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phasex_step = mult_frac(MDP4_VG_PHASE_STEP_DEFAULT,
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src_w, crtc_w);
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}
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}
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if (src_h != crtc_h) {
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uint32_t sel_unit = SCALE_FIR;
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op_mode |= MDP4_PIPE_OP_MODE_SCALEY_EN;
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if (MDP_FORMAT_IS_YUV(format)) {
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if (crtc_h > src_h)
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sel_unit = SCALE_PIXEL_RPT;
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else if (crtc_h <= (src_h / 4))
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sel_unit = SCALE_MN_PHASE;
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op_mode |= MDP4_PIPE_OP_MODE_SCALEY_UNIT_SEL(sel_unit);
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phasey_step = mult_frac(MDP4_VG_PHASE_STEP_DEFAULT,
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src_h, crtc_h);
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}
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}
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mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_SIZE(pipe),
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MDP4_PIPE_SRC_SIZE_WIDTH(src_w) |
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MDP4_PIPE_SRC_SIZE_HEIGHT(src_h));
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mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_XY(pipe),
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MDP4_PIPE_SRC_XY_X(src_x) |
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MDP4_PIPE_SRC_XY_Y(src_y));
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mdp4_write(mdp4_kms, REG_MDP4_PIPE_DST_SIZE(pipe),
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MDP4_PIPE_DST_SIZE_WIDTH(crtc_w) |
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MDP4_PIPE_DST_SIZE_HEIGHT(crtc_h));
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mdp4_write(mdp4_kms, REG_MDP4_PIPE_DST_XY(pipe),
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MDP4_PIPE_DST_XY_X(crtc_x) |
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MDP4_PIPE_DST_XY_Y(crtc_y));
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mdp4_plane_set_scanout(plane, fb);
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mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_FORMAT(pipe),
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MDP4_PIPE_SRC_FORMAT_A_BPC(format->bpc_a) |
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MDP4_PIPE_SRC_FORMAT_R_BPC(format->bpc_r) |
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MDP4_PIPE_SRC_FORMAT_G_BPC(format->bpc_g) |
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MDP4_PIPE_SRC_FORMAT_B_BPC(format->bpc_b) |
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COND(format->alpha_enable, MDP4_PIPE_SRC_FORMAT_ALPHA_ENABLE) |
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MDP4_PIPE_SRC_FORMAT_CPP(format->cpp - 1) |
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MDP4_PIPE_SRC_FORMAT_UNPACK_COUNT(format->unpack_count - 1) |
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MDP4_PIPE_SRC_FORMAT_FETCH_PLANES(format->fetch_type) |
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MDP4_PIPE_SRC_FORMAT_CHROMA_SAMP(format->chroma_sample) |
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MDP4_PIPE_SRC_FORMAT_FRAME_FORMAT(frame_type) |
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COND(format->unpack_tight, MDP4_PIPE_SRC_FORMAT_UNPACK_TIGHT));
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mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_UNPACK(pipe),
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MDP4_PIPE_SRC_UNPACK_ELEM0(format->unpack[0]) |
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MDP4_PIPE_SRC_UNPACK_ELEM1(format->unpack[1]) |
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MDP4_PIPE_SRC_UNPACK_ELEM2(format->unpack[2]) |
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MDP4_PIPE_SRC_UNPACK_ELEM3(format->unpack[3]));
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if (MDP_FORMAT_IS_YUV(format)) {
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struct csc_cfg *csc = mdp_get_default_csc_cfg(CSC_YUV2RGB);
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op_mode |= MDP4_PIPE_OP_MODE_SRC_YCBCR;
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op_mode |= MDP4_PIPE_OP_MODE_CSC_EN;
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mdp4_write_csc_config(mdp4_kms, pipe, csc);
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}
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mdp4_write(mdp4_kms, REG_MDP4_PIPE_OP_MODE(pipe), op_mode);
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mdp4_write(mdp4_kms, REG_MDP4_PIPE_PHASEX_STEP(pipe), phasex_step);
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mdp4_write(mdp4_kms, REG_MDP4_PIPE_PHASEY_STEP(pipe), phasey_step);
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if (frame_type != FRAME_LINEAR)
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mdp4_write(mdp4_kms, REG_MDP4_PIPE_SSTILE_FRAME_SIZE(pipe),
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MDP4_PIPE_SSTILE_FRAME_SIZE_WIDTH(src_w) |
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MDP4_PIPE_SSTILE_FRAME_SIZE_HEIGHT(src_h));
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return 0;
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}
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static const char *pipe_names[] = {
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"VG1", "VG2",
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"RGB1", "RGB2", "RGB3",
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"VG3", "VG4",
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};
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enum mdp4_pipe mdp4_plane_pipe(struct drm_plane *plane)
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{
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struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
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return mdp4_plane->pipe;
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}
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static const uint64_t supported_format_modifiers[] = {
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DRM_FORMAT_MOD_SAMSUNG_64_32_TILE,
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DRM_FORMAT_MOD_LINEAR,
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DRM_FORMAT_MOD_INVALID
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};
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/* initialize plane */
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struct drm_plane *mdp4_plane_init(struct drm_device *dev,
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enum mdp4_pipe pipe_id, bool private_plane)
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{
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struct drm_plane *plane = NULL;
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struct mdp4_plane *mdp4_plane;
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int ret;
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enum drm_plane_type type;
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mdp4_plane = kzalloc(sizeof(*mdp4_plane), GFP_KERNEL);
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if (!mdp4_plane) {
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ret = -ENOMEM;
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goto fail;
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}
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plane = &mdp4_plane->base;
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mdp4_plane->pipe = pipe_id;
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mdp4_plane->name = pipe_names[pipe_id];
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mdp4_plane->caps = mdp4_pipe_caps(pipe_id);
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mdp4_plane->nformats = mdp_get_formats(mdp4_plane->formats,
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ARRAY_SIZE(mdp4_plane->formats),
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!pipe_supports_yuv(mdp4_plane->caps));
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type = private_plane ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
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ret = drm_universal_plane_init(dev, plane, 0xff, &mdp4_plane_funcs,
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mdp4_plane->formats, mdp4_plane->nformats,
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supported_format_modifiers, type, NULL);
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if (ret)
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goto fail;
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drm_plane_helper_add(plane, &mdp4_plane_helper_funcs);
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mdp4_plane_install_properties(plane, &plane->base);
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drm_plane_enable_fb_damage_clips(plane);
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return plane;
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fail:
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if (plane)
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mdp4_plane_destroy(plane);
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return ERR_PTR(ret);
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}
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