From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- drivers/gpu/drm/msm/mdp/mdp4/mdp4_plane.c | 382 ++++++++++++++++++++++++++++++ 1 file changed, 382 insertions(+) create mode 100644 drivers/gpu/drm/msm/mdp/mdp4/mdp4_plane.c (limited to 'drivers/gpu/drm/msm/mdp/mdp4/mdp4_plane.c') diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_plane.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_plane.c new file mode 100644 index 000000000..dbc068988 --- /dev/null +++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_plane.c @@ -0,0 +1,382 @@ +/* + * Copyright (C) 2013 Red Hat + * Author: Rob Clark + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see . + */ + +#include "mdp4_kms.h" + +#define DOWN_SCALE_MAX 8 +#define UP_SCALE_MAX 8 + +struct mdp4_plane { + struct drm_plane base; + const char *name; + + enum mdp4_pipe pipe; + + uint32_t nformats; + uint32_t formats[32]; + + bool enabled; +}; +#define to_mdp4_plane(x) container_of(x, struct mdp4_plane, base) + +static void mdp4_plane_set_scanout(struct drm_plane *plane, + struct drm_framebuffer *fb); +static int mdp4_plane_mode_set(struct drm_plane *plane, + struct drm_crtc *crtc, struct drm_framebuffer *fb, + int crtc_x, int crtc_y, + unsigned int crtc_w, unsigned int crtc_h, + uint32_t src_x, uint32_t src_y, + uint32_t src_w, uint32_t src_h); + +static struct mdp4_kms *get_kms(struct drm_plane *plane) +{ + struct msm_drm_private *priv = plane->dev->dev_private; + return to_mdp4_kms(to_mdp_kms(priv->kms)); +} + +static void mdp4_plane_destroy(struct drm_plane *plane) +{ + struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane); + + drm_plane_helper_disable(plane); + drm_plane_cleanup(plane); + + kfree(mdp4_plane); +} + +/* helper to install properties which are common to planes and crtcs */ +void mdp4_plane_install_properties(struct drm_plane *plane, + struct drm_mode_object *obj) +{ + // XXX +} + +int mdp4_plane_set_property(struct drm_plane *plane, + struct drm_property *property, uint64_t val) +{ + // XXX + return -EINVAL; +} + +static const struct drm_plane_funcs mdp4_plane_funcs = { + .update_plane = drm_atomic_helper_update_plane, + .disable_plane = drm_atomic_helper_disable_plane, + .destroy = mdp4_plane_destroy, + .set_property = mdp4_plane_set_property, + .reset = drm_atomic_helper_plane_reset, + .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, +}; + +static int mdp4_plane_prepare_fb(struct drm_plane *plane, + struct drm_framebuffer *fb, + const struct drm_plane_state *new_state) +{ + struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane); + struct mdp4_kms *mdp4_kms = get_kms(plane); + + DBG("%s: prepare: FB[%u]", mdp4_plane->name, fb->base.id); + return msm_framebuffer_prepare(fb, mdp4_kms->id); +} + +static void mdp4_plane_cleanup_fb(struct drm_plane *plane, + struct drm_framebuffer *fb, + const struct drm_plane_state *old_state) +{ + struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane); + struct mdp4_kms *mdp4_kms = get_kms(plane); + + DBG("%s: cleanup: FB[%u]", mdp4_plane->name, fb->base.id); + msm_framebuffer_cleanup(fb, mdp4_kms->id); +} + + +static int mdp4_plane_atomic_check(struct drm_plane *plane, + struct drm_plane_state *state) +{ + return 0; +} + +static void mdp4_plane_atomic_update(struct drm_plane *plane, + struct drm_plane_state *old_state) +{ + struct drm_plane_state *state = plane->state; + int ret; + + ret = mdp4_plane_mode_set(plane, + state->crtc, state->fb, + state->crtc_x, state->crtc_y, + state->crtc_w, state->crtc_h, + state->src_x, state->src_y, + state->src_w, state->src_h); + /* atomic_check should have ensured that this doesn't fail */ + WARN_ON(ret < 0); +} + +static const struct drm_plane_helper_funcs mdp4_plane_helper_funcs = { + .prepare_fb = mdp4_plane_prepare_fb, + .cleanup_fb = mdp4_plane_cleanup_fb, + .atomic_check = mdp4_plane_atomic_check, + .atomic_update = mdp4_plane_atomic_update, +}; + +static void mdp4_plane_set_scanout(struct drm_plane *plane, + struct drm_framebuffer *fb) +{ + struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane); + struct mdp4_kms *mdp4_kms = get_kms(plane); + enum mdp4_pipe pipe = mdp4_plane->pipe; + + mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_STRIDE_A(pipe), + MDP4_PIPE_SRC_STRIDE_A_P0(fb->pitches[0]) | + MDP4_PIPE_SRC_STRIDE_A_P1(fb->pitches[1])); + + mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_STRIDE_B(pipe), + MDP4_PIPE_SRC_STRIDE_B_P2(fb->pitches[2]) | + MDP4_PIPE_SRC_STRIDE_B_P3(fb->pitches[3])); + + mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP0_BASE(pipe), + msm_framebuffer_iova(fb, mdp4_kms->id, 0)); + mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP1_BASE(pipe), + msm_framebuffer_iova(fb, mdp4_kms->id, 1)); + mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP2_BASE(pipe), + msm_framebuffer_iova(fb, mdp4_kms->id, 2)); + mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP3_BASE(pipe), + msm_framebuffer_iova(fb, mdp4_kms->id, 3)); + + plane->fb = fb; +} + +static void mdp4_write_csc_config(struct mdp4_kms *mdp4_kms, + enum mdp4_pipe pipe, struct csc_cfg *csc) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(csc->matrix); i++) { + mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_MV(pipe, i), + csc->matrix[i]); + } + + for (i = 0; i < ARRAY_SIZE(csc->post_bias) ; i++) { + mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_PRE_BV(pipe, i), + csc->pre_bias[i]); + + mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_POST_BV(pipe, i), + csc->post_bias[i]); + } + + for (i = 0; i < ARRAY_SIZE(csc->post_clamp) ; i++) { + mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_PRE_LV(pipe, i), + csc->pre_clamp[i]); + + mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_POST_LV(pipe, i), + csc->post_clamp[i]); + } +} + +#define MDP4_VG_PHASE_STEP_DEFAULT 0x20000000 + +static int mdp4_plane_mode_set(struct drm_plane *plane, + struct drm_crtc *crtc, struct drm_framebuffer *fb, + int crtc_x, int crtc_y, + unsigned int crtc_w, unsigned int crtc_h, + uint32_t src_x, uint32_t src_y, + uint32_t src_w, uint32_t src_h) +{ + struct drm_device *dev = plane->dev; + struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane); + struct mdp4_kms *mdp4_kms = get_kms(plane); + enum mdp4_pipe pipe = mdp4_plane->pipe; + const struct mdp_format *format; + uint32_t op_mode = 0; + uint32_t phasex_step = MDP4_VG_PHASE_STEP_DEFAULT; + uint32_t phasey_step = MDP4_VG_PHASE_STEP_DEFAULT; + + if (!(crtc && fb)) { + DBG("%s: disabled!", mdp4_plane->name); + return 0; + } + + /* src values are in Q16 fixed point, convert to integer: */ + src_x = src_x >> 16; + src_y = src_y >> 16; + src_w = src_w >> 16; + src_h = src_h >> 16; + + DBG("%s: FB[%u] %u,%u,%u,%u -> CRTC[%u] %d,%d,%u,%u", mdp4_plane->name, + fb->base.id, src_x, src_y, src_w, src_h, + crtc->base.id, crtc_x, crtc_y, crtc_w, crtc_h); + + format = to_mdp_format(msm_framebuffer_format(fb)); + + if (src_w > (crtc_w * DOWN_SCALE_MAX)) { + dev_err(dev->dev, "Width down scaling exceeds limits!\n"); + return -ERANGE; + } + + if (src_h > (crtc_h * DOWN_SCALE_MAX)) { + dev_err(dev->dev, "Height down scaling exceeds limits!\n"); + return -ERANGE; + } + + if (crtc_w > (src_w * UP_SCALE_MAX)) { + dev_err(dev->dev, "Width up scaling exceeds limits!\n"); + return -ERANGE; + } + + if (crtc_h > (src_h * UP_SCALE_MAX)) { + dev_err(dev->dev, "Height up scaling exceeds limits!\n"); + return -ERANGE; + } + + if (src_w != crtc_w) { + uint32_t sel_unit = SCALE_FIR; + op_mode |= MDP4_PIPE_OP_MODE_SCALEX_EN; + + if (MDP_FORMAT_IS_YUV(format)) { + if (crtc_w > src_w) + sel_unit = SCALE_PIXEL_RPT; + else if (crtc_w <= (src_w / 4)) + sel_unit = SCALE_MN_PHASE; + + op_mode |= MDP4_PIPE_OP_MODE_SCALEX_UNIT_SEL(sel_unit); + phasex_step = mult_frac(MDP4_VG_PHASE_STEP_DEFAULT, + src_w, crtc_w); + } + } + + if (src_h != crtc_h) { + uint32_t sel_unit = SCALE_FIR; + op_mode |= MDP4_PIPE_OP_MODE_SCALEY_EN; + + if (MDP_FORMAT_IS_YUV(format)) { + + if (crtc_h > src_h) + sel_unit = SCALE_PIXEL_RPT; + else if (crtc_h <= (src_h / 4)) + sel_unit = SCALE_MN_PHASE; + + op_mode |= MDP4_PIPE_OP_MODE_SCALEY_UNIT_SEL(sel_unit); + phasey_step = mult_frac(MDP4_VG_PHASE_STEP_DEFAULT, + src_h, crtc_h); + } + } + + mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_SIZE(pipe), + MDP4_PIPE_SRC_SIZE_WIDTH(src_w) | + MDP4_PIPE_SRC_SIZE_HEIGHT(src_h)); + + mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_XY(pipe), + MDP4_PIPE_SRC_XY_X(src_x) | + MDP4_PIPE_SRC_XY_Y(src_y)); + + mdp4_write(mdp4_kms, REG_MDP4_PIPE_DST_SIZE(pipe), + MDP4_PIPE_DST_SIZE_WIDTH(crtc_w) | + MDP4_PIPE_DST_SIZE_HEIGHT(crtc_h)); + + mdp4_write(mdp4_kms, REG_MDP4_PIPE_DST_XY(pipe), + MDP4_PIPE_DST_XY_X(crtc_x) | + MDP4_PIPE_DST_XY_Y(crtc_y)); + + mdp4_plane_set_scanout(plane, fb); + + mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_FORMAT(pipe), + MDP4_PIPE_SRC_FORMAT_A_BPC(format->bpc_a) | + MDP4_PIPE_SRC_FORMAT_R_BPC(format->bpc_r) | + MDP4_PIPE_SRC_FORMAT_G_BPC(format->bpc_g) | + MDP4_PIPE_SRC_FORMAT_B_BPC(format->bpc_b) | + COND(format->alpha_enable, MDP4_PIPE_SRC_FORMAT_ALPHA_ENABLE) | + MDP4_PIPE_SRC_FORMAT_CPP(format->cpp - 1) | + MDP4_PIPE_SRC_FORMAT_UNPACK_COUNT(format->unpack_count - 1) | + MDP4_PIPE_SRC_FORMAT_FETCH_PLANES(format->fetch_type) | + MDP4_PIPE_SRC_FORMAT_CHROMA_SAMP(format->chroma_sample) | + COND(format->unpack_tight, MDP4_PIPE_SRC_FORMAT_UNPACK_TIGHT)); + + mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_UNPACK(pipe), + MDP4_PIPE_SRC_UNPACK_ELEM0(format->unpack[0]) | + MDP4_PIPE_SRC_UNPACK_ELEM1(format->unpack[1]) | + MDP4_PIPE_SRC_UNPACK_ELEM2(format->unpack[2]) | + MDP4_PIPE_SRC_UNPACK_ELEM3(format->unpack[3])); + + if (MDP_FORMAT_IS_YUV(format)) { + struct csc_cfg *csc = mdp_get_default_csc_cfg(CSC_YUV2RGB); + + op_mode |= MDP4_PIPE_OP_MODE_SRC_YCBCR; + op_mode |= MDP4_PIPE_OP_MODE_CSC_EN; + mdp4_write_csc_config(mdp4_kms, pipe, csc); + } + + mdp4_write(mdp4_kms, REG_MDP4_PIPE_OP_MODE(pipe), op_mode); + mdp4_write(mdp4_kms, REG_MDP4_PIPE_PHASEX_STEP(pipe), phasex_step); + mdp4_write(mdp4_kms, REG_MDP4_PIPE_PHASEY_STEP(pipe), phasey_step); + + return 0; +} + +static const char *pipe_names[] = { + "VG1", "VG2", + "RGB1", "RGB2", "RGB3", + "VG3", "VG4", +}; + +enum mdp4_pipe mdp4_plane_pipe(struct drm_plane *plane) +{ + struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane); + return mdp4_plane->pipe; +} + +/* initialize plane */ +struct drm_plane *mdp4_plane_init(struct drm_device *dev, + enum mdp4_pipe pipe_id, bool private_plane) +{ + struct drm_plane *plane = NULL; + struct mdp4_plane *mdp4_plane; + int ret; + enum drm_plane_type type; + + mdp4_plane = kzalloc(sizeof(*mdp4_plane), GFP_KERNEL); + if (!mdp4_plane) { + ret = -ENOMEM; + goto fail; + } + + plane = &mdp4_plane->base; + + mdp4_plane->pipe = pipe_id; + mdp4_plane->name = pipe_names[pipe_id]; + + mdp4_plane->nformats = mdp4_get_formats(pipe_id, mdp4_plane->formats, + ARRAY_SIZE(mdp4_plane->formats)); + + type = private_plane ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY; + ret = drm_universal_plane_init(dev, plane, 0xff, &mdp4_plane_funcs, + mdp4_plane->formats, mdp4_plane->nformats, type); + if (ret) + goto fail; + + drm_plane_helper_add(plane, &mdp4_plane_helper_funcs); + + mdp4_plane_install_properties(plane, &plane->base); + + return plane; + +fail: + if (plane) + mdp4_plane_destroy(plane); + + return ERR_PTR(ret); +} -- cgit v1.2.3-54-g00ecf