diff options
Diffstat (limited to 'drivers/gpu/drm/rcar-du/rcar_du_vsp.c')
-rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_vsp.c | 370 |
1 files changed, 370 insertions, 0 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c new file mode 100644 index 000000000000..7c7d6f265a09 --- /dev/null +++ b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c @@ -0,0 +1,370 @@ +/* + * rcar_du_vsp.h -- R-Car Display Unit VSP-Based Compositor + * + * Copyright (C) 2015 Renesas Electronics Corporation + * + * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.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/drmP.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 <linux/of_platform.h> +#include <linux/videodev2.h> + +#include <media/vsp1.h> + +#include "rcar_du_drv.h" +#include "rcar_du_kms.h" +#include "rcar_du_vsp.h" + +void rcar_du_vsp_enable(struct rcar_du_crtc *crtc) +{ + const struct drm_display_mode *mode = &crtc->crtc.state->adjusted_mode; + struct rcar_du_plane_state state = { + .state = { + .crtc = &crtc->crtc, + .crtc_x = 0, + .crtc_y = 0, + .crtc_w = mode->hdisplay, + .crtc_h = mode->vdisplay, + .src_x = 0, + .src_y = 0, + .src_w = mode->hdisplay << 16, + .src_h = mode->vdisplay << 16, + }, + .format = rcar_du_format_info(DRM_FORMAT_ARGB8888), + .hwindex = crtc->index % 2, + .source = RCAR_DU_PLANE_VSPD1, + .alpha = 255, + .colorkey = 0, + .zpos = 0, + }; + + __rcar_du_plane_setup(crtc->group, &state); + + /* Ensure that the plane source configuration takes effect by requesting + * a restart of the group. See rcar_du_plane_atomic_update() for a more + * detailed explanation. + * + * TODO: Check whether this is still needed on Gen3. + */ + crtc->group->need_restart = true; + + vsp1_du_setup_lif(crtc->vsp->vsp, mode->hdisplay, mode->vdisplay); +} + +void rcar_du_vsp_disable(struct rcar_du_crtc *crtc) +{ + vsp1_du_setup_lif(crtc->vsp->vsp, 0, 0); +} + +void rcar_du_vsp_atomic_begin(struct rcar_du_crtc *crtc) +{ + vsp1_du_atomic_begin(crtc->vsp->vsp); +} + +void rcar_du_vsp_atomic_flush(struct rcar_du_crtc *crtc) +{ + vsp1_du_atomic_flush(crtc->vsp->vsp); +} + +/* Keep the two tables in sync. */ +static const u32 formats_kms[] = { + DRM_FORMAT_RGB332, + DRM_FORMAT_ARGB4444, + DRM_FORMAT_XRGB4444, + DRM_FORMAT_ARGB1555, + DRM_FORMAT_XRGB1555, + DRM_FORMAT_RGB565, + DRM_FORMAT_BGR888, + DRM_FORMAT_RGB888, + DRM_FORMAT_BGRA8888, + DRM_FORMAT_BGRX8888, + DRM_FORMAT_ARGB8888, + DRM_FORMAT_XRGB8888, + DRM_FORMAT_UYVY, + DRM_FORMAT_VYUY, + DRM_FORMAT_YUYV, + DRM_FORMAT_YVYU, + DRM_FORMAT_NV12, + DRM_FORMAT_NV21, + DRM_FORMAT_NV16, + DRM_FORMAT_NV61, +}; + +static const u32 formats_v4l2[] = { + V4L2_PIX_FMT_RGB332, + V4L2_PIX_FMT_ARGB444, + V4L2_PIX_FMT_XRGB444, + V4L2_PIX_FMT_ARGB555, + V4L2_PIX_FMT_XRGB555, + V4L2_PIX_FMT_RGB565, + V4L2_PIX_FMT_RGB24, + V4L2_PIX_FMT_BGR24, + V4L2_PIX_FMT_ARGB32, + V4L2_PIX_FMT_XRGB32, + V4L2_PIX_FMT_ABGR32, + V4L2_PIX_FMT_XBGR32, + V4L2_PIX_FMT_UYVY, + V4L2_PIX_FMT_VYUY, + V4L2_PIX_FMT_YUYV, + V4L2_PIX_FMT_YVYU, + V4L2_PIX_FMT_NV12M, + V4L2_PIX_FMT_NV21M, + V4L2_PIX_FMT_NV16M, + V4L2_PIX_FMT_NV61M, +}; + +static void rcar_du_vsp_plane_setup(struct rcar_du_vsp_plane *plane) +{ + struct rcar_du_vsp_plane_state *state = + to_rcar_vsp_plane_state(plane->plane.state); + struct drm_framebuffer *fb = plane->plane.state->fb; + struct drm_gem_cma_object *gem; + struct v4l2_rect src; + struct v4l2_rect dst; + dma_addr_t paddr[2] = { 0, }; + u32 pixelformat = 0; + unsigned int i; + + src.left = state->state.src_x >> 16; + src.top = state->state.src_y >> 16; + src.width = state->state.src_w >> 16; + src.height = state->state.src_h >> 16; + + dst.left = state->state.crtc_x; + dst.top = state->state.crtc_y; + dst.width = state->state.crtc_w; + dst.height = state->state.crtc_h; + + gem = drm_fb_cma_get_gem_obj(fb, 0); + paddr[0] = gem->paddr + fb->offsets[0]; + + if (state->format->planes == 2) { + gem = drm_fb_cma_get_gem_obj(fb, 1); + paddr[1] = gem->paddr + fb->offsets[1]; + } + + for (i = 0; i < ARRAY_SIZE(formats_kms); ++i) { + if (formats_kms[i] == state->format->fourcc) { + pixelformat = formats_v4l2[i]; + break; + } + } + + WARN_ON(!pixelformat); + + vsp1_du_atomic_update(plane->vsp->vsp, plane->index, pixelformat, + fb->pitches[0], paddr, &src, &dst); +} + +static int rcar_du_vsp_plane_atomic_check(struct drm_plane *plane, + struct drm_plane_state *state) +{ + struct rcar_du_vsp_plane_state *rstate = to_rcar_vsp_plane_state(state); + struct rcar_du_vsp_plane *rplane = to_rcar_vsp_plane(plane); + struct rcar_du_device *rcdu = rplane->vsp->dev; + + if (!state->fb || !state->crtc) { + rstate->format = NULL; + return 0; + } + + if (state->src_w >> 16 != state->crtc_w || + state->src_h >> 16 != state->crtc_h) { + dev_dbg(rcdu->dev, "%s: scaling not supported\n", __func__); + return -EINVAL; + } + + rstate->format = rcar_du_format_info(state->fb->pixel_format); + if (rstate->format == NULL) { + dev_dbg(rcdu->dev, "%s: unsupported format %08x\n", __func__, + state->fb->pixel_format); + return -EINVAL; + } + + return 0; +} + +static void rcar_du_vsp_plane_atomic_update(struct drm_plane *plane, + struct drm_plane_state *old_state) +{ + struct rcar_du_vsp_plane *rplane = to_rcar_vsp_plane(plane); + + if (plane->state->crtc) + rcar_du_vsp_plane_setup(rplane); + else + vsp1_du_atomic_update(rplane->vsp->vsp, rplane->index, 0, 0, 0, + NULL, NULL); +} + +static const struct drm_plane_helper_funcs rcar_du_vsp_plane_helper_funcs = { + .atomic_check = rcar_du_vsp_plane_atomic_check, + .atomic_update = rcar_du_vsp_plane_atomic_update, +}; + +static struct drm_plane_state * +rcar_du_vsp_plane_atomic_duplicate_state(struct drm_plane *plane) +{ + struct rcar_du_vsp_plane_state *state; + struct rcar_du_vsp_plane_state *copy; + + if (WARN_ON(!plane->state)) + return NULL; + + state = to_rcar_vsp_plane_state(plane->state); + copy = kmemdup(state, sizeof(*state), GFP_KERNEL); + if (copy == NULL) + return NULL; + + __drm_atomic_helper_plane_duplicate_state(plane, ©->state); + + return ©->state; +} + +static void rcar_du_vsp_plane_atomic_destroy_state(struct drm_plane *plane, + struct drm_plane_state *state) +{ + __drm_atomic_helper_plane_destroy_state(plane, state); + kfree(to_rcar_vsp_plane_state(state)); +} + +static void rcar_du_vsp_plane_reset(struct drm_plane *plane) +{ + struct rcar_du_vsp_plane_state *state; + + if (plane->state) { + rcar_du_vsp_plane_atomic_destroy_state(plane, plane->state); + plane->state = NULL; + } + + state = kzalloc(sizeof(*state), GFP_KERNEL); + if (state == NULL) + return; + + state->alpha = 255; + + plane->state = &state->state; + plane->state->plane = plane; +} + +static int rcar_du_vsp_plane_atomic_set_property(struct drm_plane *plane, + struct drm_plane_state *state, struct drm_property *property, + uint64_t val) +{ + struct rcar_du_vsp_plane_state *rstate = to_rcar_vsp_plane_state(state); + struct rcar_du_device *rcdu = to_rcar_vsp_plane(plane)->vsp->dev; + + if (property == rcdu->props.alpha) + rstate->alpha = val; + else + return -EINVAL; + + return 0; +} + +static int rcar_du_vsp_plane_atomic_get_property(struct drm_plane *plane, + const struct drm_plane_state *state, struct drm_property *property, + uint64_t *val) +{ + const struct rcar_du_vsp_plane_state *rstate = + container_of(state, const struct rcar_du_vsp_plane_state, state); + struct rcar_du_device *rcdu = to_rcar_vsp_plane(plane)->vsp->dev; + + if (property == rcdu->props.alpha) + *val = rstate->alpha; + else + return -EINVAL; + + return 0; +} + +static const struct drm_plane_funcs rcar_du_vsp_plane_funcs = { + .update_plane = drm_atomic_helper_update_plane, + .disable_plane = drm_atomic_helper_disable_plane, + .reset = rcar_du_vsp_plane_reset, + .set_property = drm_atomic_helper_plane_set_property, + .destroy = drm_plane_cleanup, + .atomic_duplicate_state = rcar_du_vsp_plane_atomic_duplicate_state, + .atomic_destroy_state = rcar_du_vsp_plane_atomic_destroy_state, + .atomic_set_property = rcar_du_vsp_plane_atomic_set_property, + .atomic_get_property = rcar_du_vsp_plane_atomic_get_property, +}; + +int rcar_du_vsp_init(struct rcar_du_vsp *vsp) +{ + struct rcar_du_device *rcdu = vsp->dev; + struct platform_device *pdev; + struct device_node *np; + unsigned int i; + int ret; + + /* Find the VSP device and initialize it. */ + np = of_parse_phandle(rcdu->dev->of_node, "vsps", vsp->index); + if (!np) { + dev_err(rcdu->dev, "vsps node not found\n"); + return -ENXIO; + } + + pdev = of_find_device_by_node(np); + of_node_put(np); + if (!pdev) + return -ENXIO; + + vsp->vsp = &pdev->dev; + + ret = vsp1_du_init(vsp->vsp); + if (ret < 0) + return ret; + + /* The VSP2D (Gen3) has 5 RPFs, but the VSP1D (Gen2) is limited to + * 4 RPFs. Hardcode the number of planes to 4 as Gen3 isn't supported + * yet. + */ + vsp->num_planes = 4; + + vsp->planes = devm_kcalloc(rcdu->dev, vsp->num_planes, + sizeof(*vsp->planes), GFP_KERNEL); + if (!vsp->planes) + return -ENOMEM; + + for (i = 0; i < vsp->num_planes; ++i) { + enum drm_plane_type type = i ? DRM_PLANE_TYPE_OVERLAY + : DRM_PLANE_TYPE_PRIMARY; + struct rcar_du_vsp_plane *plane = &vsp->planes[i]; + + plane->vsp = vsp; + plane->index = i; + + ret = drm_universal_plane_init(rcdu->ddev, &plane->plane, + 1 << vsp->index, + &rcar_du_vsp_plane_funcs, + formats_kms, + ARRAY_SIZE(formats_kms), type, + NULL); + if (ret < 0) + return ret; + + drm_plane_helper_add(&plane->plane, + &rcar_du_vsp_plane_helper_funcs); + + if (type == DRM_PLANE_TYPE_PRIMARY) + continue; + + drm_object_attach_property(&plane->plane.base, + rcdu->props.alpha, 255); + } + + return 0; +} |