132a1795fSJyri Sarha // SPDX-License-Identifier: GPL-2.0
232a1795fSJyri Sarha /*
39410113fSAlexander A. Klimov * Copyright (C) 2018 Texas Instruments Incorporated - https://www.ti.com/
432a1795fSJyri Sarha * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
532a1795fSJyri Sarha */
632a1795fSJyri Sarha
732a1795fSJyri Sarha #include <drm/drm_atomic.h>
832a1795fSJyri Sarha #include <drm/drm_atomic_helper.h>
990bb087fSVille Syrjälä #include <drm/drm_blend.h>
1032a1795fSJyri Sarha #include <drm/drm_crtc.h>
1132a1795fSJyri Sarha #include <drm/drm_fourcc.h>
12720cf96dSVille Syrjälä #include <drm/drm_framebuffer.h>
13820c1707SThomas Zimmermann #include <drm/drm_gem_atomic_helper.h>
1432a1795fSJyri Sarha
1532a1795fSJyri Sarha #include "tidss_crtc.h"
1632a1795fSJyri Sarha #include "tidss_dispc.h"
1732a1795fSJyri Sarha #include "tidss_drv.h"
1832a1795fSJyri Sarha #include "tidss_plane.h"
1932a1795fSJyri Sarha
2032a1795fSJyri Sarha /* drm_plane_helper_funcs */
2132a1795fSJyri Sarha
tidss_plane_atomic_check(struct drm_plane * plane,struct drm_atomic_state * state)2232a1795fSJyri Sarha static int tidss_plane_atomic_check(struct drm_plane *plane,
237c11b99aSMaxime Ripard struct drm_atomic_state *state)
2432a1795fSJyri Sarha {
257c11b99aSMaxime Ripard struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
267c11b99aSMaxime Ripard plane);
2732a1795fSJyri Sarha struct drm_device *ddev = plane->dev;
2802bb1317SDaniel Vetter struct tidss_device *tidss = to_tidss(ddev);
2932a1795fSJyri Sarha struct tidss_plane *tplane = to_tidss_plane(plane);
3032a1795fSJyri Sarha const struct drm_format_info *finfo;
3132a1795fSJyri Sarha struct drm_crtc_state *crtc_state;
3232a1795fSJyri Sarha u32 hw_plane = tplane->hw_plane_id;
3332a1795fSJyri Sarha u32 hw_videoport;
3432a1795fSJyri Sarha int ret;
3532a1795fSJyri Sarha
3632a1795fSJyri Sarha dev_dbg(ddev->dev, "%s\n", __func__);
3732a1795fSJyri Sarha
38ba5c1649SMaxime Ripard if (!new_plane_state->crtc) {
3932a1795fSJyri Sarha /*
4032a1795fSJyri Sarha * The visible field is not reset by the DRM core but only
41a0c64d15SGeert Uytterhoeven * updated by drm_atomic_helper_check_plane_state(), set it
42a0c64d15SGeert Uytterhoeven * manually.
4332a1795fSJyri Sarha */
44ba5c1649SMaxime Ripard new_plane_state->visible = false;
4532a1795fSJyri Sarha return 0;
4632a1795fSJyri Sarha }
4732a1795fSJyri Sarha
48dec92020SMaxime Ripard crtc_state = drm_atomic_get_crtc_state(state,
49ba5c1649SMaxime Ripard new_plane_state->crtc);
5032a1795fSJyri Sarha if (IS_ERR(crtc_state))
5132a1795fSJyri Sarha return PTR_ERR(crtc_state);
5232a1795fSJyri Sarha
53ba5c1649SMaxime Ripard ret = drm_atomic_helper_check_plane_state(new_plane_state, crtc_state,
54ba5c1649SMaxime Ripard 0,
5532a1795fSJyri Sarha INT_MAX, true, true);
5632a1795fSJyri Sarha if (ret < 0)
5732a1795fSJyri Sarha return ret;
5832a1795fSJyri Sarha
5932a1795fSJyri Sarha /*
6032a1795fSJyri Sarha * The HW is only able to start drawing at subpixel boundary
6132a1795fSJyri Sarha * (the two first checks bellow). At the end of a row the HW
6232a1795fSJyri Sarha * can only jump integer number of subpixels forward to the
6332a1795fSJyri Sarha * beginning of the next row. So we can only show picture with
6432a1795fSJyri Sarha * integer subpixel width (the third check). However, after
6532a1795fSJyri Sarha * reaching the end of the drawn picture the drawing starts
6632a1795fSJyri Sarha * again at the absolute memory address where top left corner
6732a1795fSJyri Sarha * position of the drawn picture is (so there is no need to
6832a1795fSJyri Sarha * check for odd height).
6932a1795fSJyri Sarha */
7032a1795fSJyri Sarha
71ba5c1649SMaxime Ripard finfo = drm_format_info(new_plane_state->fb->format->format);
7232a1795fSJyri Sarha
73ba5c1649SMaxime Ripard if ((new_plane_state->src_x >> 16) % finfo->hsub != 0) {
7432a1795fSJyri Sarha dev_dbg(ddev->dev,
7532a1795fSJyri Sarha "%s: x-position %u not divisible subpixel size %u\n",
76ba5c1649SMaxime Ripard __func__, (new_plane_state->src_x >> 16), finfo->hsub);
7732a1795fSJyri Sarha return -EINVAL;
7832a1795fSJyri Sarha }
7932a1795fSJyri Sarha
80ba5c1649SMaxime Ripard if ((new_plane_state->src_y >> 16) % finfo->vsub != 0) {
8132a1795fSJyri Sarha dev_dbg(ddev->dev,
8232a1795fSJyri Sarha "%s: y-position %u not divisible subpixel size %u\n",
83ba5c1649SMaxime Ripard __func__, (new_plane_state->src_y >> 16), finfo->vsub);
8432a1795fSJyri Sarha return -EINVAL;
8532a1795fSJyri Sarha }
8632a1795fSJyri Sarha
87ba5c1649SMaxime Ripard if ((new_plane_state->src_w >> 16) % finfo->hsub != 0) {
8832a1795fSJyri Sarha dev_dbg(ddev->dev,
8932a1795fSJyri Sarha "%s: src width %u not divisible by subpixel size %u\n",
90ba5c1649SMaxime Ripard __func__, (new_plane_state->src_w >> 16),
91ba5c1649SMaxime Ripard finfo->hsub);
9232a1795fSJyri Sarha return -EINVAL;
9332a1795fSJyri Sarha }
9432a1795fSJyri Sarha
95ba5c1649SMaxime Ripard if (!new_plane_state->visible)
9632a1795fSJyri Sarha return 0;
9732a1795fSJyri Sarha
98ba5c1649SMaxime Ripard hw_videoport = to_tidss_crtc(new_plane_state->crtc)->hw_videoport;
9932a1795fSJyri Sarha
100ba5c1649SMaxime Ripard ret = dispc_plane_check(tidss->dispc, hw_plane, new_plane_state,
101ba5c1649SMaxime Ripard hw_videoport);
10232a1795fSJyri Sarha if (ret)
10332a1795fSJyri Sarha return ret;
10432a1795fSJyri Sarha
10532a1795fSJyri Sarha return 0;
10632a1795fSJyri Sarha }
10732a1795fSJyri Sarha
tidss_plane_atomic_update(struct drm_plane * plane,struct drm_atomic_state * state)10832a1795fSJyri Sarha static void tidss_plane_atomic_update(struct drm_plane *plane,
109977697e2SMaxime Ripard struct drm_atomic_state *state)
11032a1795fSJyri Sarha {
11132a1795fSJyri Sarha struct drm_device *ddev = plane->dev;
11202bb1317SDaniel Vetter struct tidss_device *tidss = to_tidss(ddev);
11332a1795fSJyri Sarha struct tidss_plane *tplane = to_tidss_plane(plane);
11437418bf1SMaxime Ripard struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
11537418bf1SMaxime Ripard plane);
11632a1795fSJyri Sarha u32 hw_videoport;
11732a1795fSJyri Sarha
11832a1795fSJyri Sarha dev_dbg(ddev->dev, "%s\n", __func__);
11932a1795fSJyri Sarha
12041016fe1SMaxime Ripard if (!new_state->visible) {
12132a1795fSJyri Sarha dispc_plane_enable(tidss->dispc, tplane->hw_plane_id, false);
12232a1795fSJyri Sarha return;
12332a1795fSJyri Sarha }
12432a1795fSJyri Sarha
12541016fe1SMaxime Ripard hw_videoport = to_tidss_crtc(new_state->crtc)->hw_videoport;
12632a1795fSJyri Sarha
127e1174133SThomas Zimmermann dispc_plane_setup(tidss->dispc, tplane->hw_plane_id, new_state, hw_videoport);
128b1e286d3SThomas Zimmermann }
129b1e286d3SThomas Zimmermann
tidss_plane_atomic_enable(struct drm_plane * plane,struct drm_atomic_state * state)130b1e286d3SThomas Zimmermann static void tidss_plane_atomic_enable(struct drm_plane *plane,
131b1e286d3SThomas Zimmermann struct drm_atomic_state *state)
132b1e286d3SThomas Zimmermann {
133b1e286d3SThomas Zimmermann struct drm_device *ddev = plane->dev;
134b1e286d3SThomas Zimmermann struct tidss_device *tidss = to_tidss(ddev);
135b1e286d3SThomas Zimmermann struct tidss_plane *tplane = to_tidss_plane(plane);
136b1e286d3SThomas Zimmermann
137b1e286d3SThomas Zimmermann dev_dbg(ddev->dev, "%s\n", __func__);
13832a1795fSJyri Sarha
13932a1795fSJyri Sarha dispc_plane_enable(tidss->dispc, tplane->hw_plane_id, true);
14032a1795fSJyri Sarha }
14132a1795fSJyri Sarha
tidss_plane_atomic_disable(struct drm_plane * plane,struct drm_atomic_state * state)14232a1795fSJyri Sarha static void tidss_plane_atomic_disable(struct drm_plane *plane,
143977697e2SMaxime Ripard struct drm_atomic_state *state)
14432a1795fSJyri Sarha {
14532a1795fSJyri Sarha struct drm_device *ddev = plane->dev;
14602bb1317SDaniel Vetter struct tidss_device *tidss = to_tidss(ddev);
14732a1795fSJyri Sarha struct tidss_plane *tplane = to_tidss_plane(plane);
14832a1795fSJyri Sarha
14932a1795fSJyri Sarha dev_dbg(ddev->dev, "%s\n", __func__);
15032a1795fSJyri Sarha
15132a1795fSJyri Sarha dispc_plane_enable(tidss->dispc, tplane->hw_plane_id, false);
15232a1795fSJyri Sarha }
15332a1795fSJyri Sarha
drm_plane_destroy(struct drm_plane * plane)1549da67433STomi Valkeinen static void drm_plane_destroy(struct drm_plane *plane)
1559da67433STomi Valkeinen {
1569da67433STomi Valkeinen struct tidss_plane *tplane = to_tidss_plane(plane);
1579da67433STomi Valkeinen
1589da67433STomi Valkeinen drm_plane_cleanup(plane);
1599da67433STomi Valkeinen kfree(tplane);
1609da67433STomi Valkeinen }
1619da67433STomi Valkeinen
16232a1795fSJyri Sarha static const struct drm_plane_helper_funcs tidss_plane_helper_funcs = {
16332a1795fSJyri Sarha .atomic_check = tidss_plane_atomic_check,
16432a1795fSJyri Sarha .atomic_update = tidss_plane_atomic_update,
165b1e286d3SThomas Zimmermann .atomic_enable = tidss_plane_atomic_enable,
16632a1795fSJyri Sarha .atomic_disable = tidss_plane_atomic_disable,
16732a1795fSJyri Sarha };
16832a1795fSJyri Sarha
16932a1795fSJyri Sarha static const struct drm_plane_funcs tidss_plane_funcs = {
17032a1795fSJyri Sarha .update_plane = drm_atomic_helper_update_plane,
17132a1795fSJyri Sarha .disable_plane = drm_atomic_helper_disable_plane,
17232a1795fSJyri Sarha .reset = drm_atomic_helper_plane_reset,
1739da67433STomi Valkeinen .destroy = drm_plane_destroy,
17432a1795fSJyri Sarha .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
17532a1795fSJyri Sarha .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
17632a1795fSJyri Sarha };
17732a1795fSJyri Sarha
tidss_plane_create(struct tidss_device * tidss,u32 hw_plane_id,u32 plane_type,u32 crtc_mask,const u32 * formats,u32 num_formats)17832a1795fSJyri Sarha struct tidss_plane *tidss_plane_create(struct tidss_device *tidss,
17932a1795fSJyri Sarha u32 hw_plane_id, u32 plane_type,
18032a1795fSJyri Sarha u32 crtc_mask, const u32 *formats,
18132a1795fSJyri Sarha u32 num_formats)
18232a1795fSJyri Sarha {
18332a1795fSJyri Sarha struct tidss_plane *tplane;
18432a1795fSJyri Sarha enum drm_plane_type type;
18532a1795fSJyri Sarha u32 possible_crtcs;
18632a1795fSJyri Sarha u32 num_planes = tidss->feat->num_planes;
18732a1795fSJyri Sarha u32 color_encodings = (BIT(DRM_COLOR_YCBCR_BT601) |
18832a1795fSJyri Sarha BIT(DRM_COLOR_YCBCR_BT709));
18932a1795fSJyri Sarha u32 color_ranges = (BIT(DRM_COLOR_YCBCR_FULL_RANGE) |
19032a1795fSJyri Sarha BIT(DRM_COLOR_YCBCR_LIMITED_RANGE));
19132a1795fSJyri Sarha u32 default_encoding = DRM_COLOR_YCBCR_BT601;
19232a1795fSJyri Sarha u32 default_range = DRM_COLOR_YCBCR_FULL_RANGE;
19332a1795fSJyri Sarha u32 blend_modes = (BIT(DRM_MODE_BLEND_PREMULTI) |
19432a1795fSJyri Sarha BIT(DRM_MODE_BLEND_COVERAGE));
19532a1795fSJyri Sarha int ret;
19632a1795fSJyri Sarha
1979da67433STomi Valkeinen tplane = kzalloc(sizeof(*tplane), GFP_KERNEL);
19832a1795fSJyri Sarha if (!tplane)
19932a1795fSJyri Sarha return ERR_PTR(-ENOMEM);
20032a1795fSJyri Sarha
20132a1795fSJyri Sarha tplane->hw_plane_id = hw_plane_id;
20232a1795fSJyri Sarha
20332a1795fSJyri Sarha possible_crtcs = crtc_mask;
20432a1795fSJyri Sarha type = plane_type;
20532a1795fSJyri Sarha
20632a1795fSJyri Sarha ret = drm_universal_plane_init(&tidss->ddev, &tplane->plane,
20732a1795fSJyri Sarha possible_crtcs,
20832a1795fSJyri Sarha &tidss_plane_funcs,
20932a1795fSJyri Sarha formats, num_formats,
21032a1795fSJyri Sarha NULL, type, NULL);
21132a1795fSJyri Sarha if (ret < 0)
2129da67433STomi Valkeinen goto err;
21332a1795fSJyri Sarha
21432a1795fSJyri Sarha drm_plane_helper_add(&tplane->plane, &tidss_plane_helper_funcs);
21532a1795fSJyri Sarha
216*7a3cb96dSTomi Valkeinen drm_plane_create_zpos_property(&tplane->plane, tidss->num_planes, 0,
21732a1795fSJyri Sarha num_planes - 1);
21832a1795fSJyri Sarha
21932a1795fSJyri Sarha ret = drm_plane_create_color_properties(&tplane->plane,
22032a1795fSJyri Sarha color_encodings,
22132a1795fSJyri Sarha color_ranges,
22232a1795fSJyri Sarha default_encoding,
22332a1795fSJyri Sarha default_range);
22432a1795fSJyri Sarha if (ret)
2259da67433STomi Valkeinen goto err;
22632a1795fSJyri Sarha
22732a1795fSJyri Sarha ret = drm_plane_create_alpha_property(&tplane->plane);
22832a1795fSJyri Sarha if (ret)
2299da67433STomi Valkeinen goto err;
23032a1795fSJyri Sarha
23132a1795fSJyri Sarha ret = drm_plane_create_blend_mode_property(&tplane->plane, blend_modes);
23232a1795fSJyri Sarha if (ret)
2339da67433STomi Valkeinen goto err;
23432a1795fSJyri Sarha
23532a1795fSJyri Sarha return tplane;
2369da67433STomi Valkeinen
2379da67433STomi Valkeinen err:
2389da67433STomi Valkeinen kfree(tplane);
2399da67433STomi Valkeinen return ERR_PTR(ret);
24032a1795fSJyri Sarha }
241