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1/*
2 * Copyright (C) 2012 Russell King
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8#include <drm/drmP.h>
9#include <drm/drm_crtc_helper.h>
10#include <drm/drm_fb_helper.h>
11#include "armada_drm.h"
12#include "armada_fb.h"
13#include "armada_gem.h"
14#include "armada_hw.h"
15
16static void armada_fb_destroy(struct drm_framebuffer *fb)
17{
18 struct armada_framebuffer *dfb = drm_fb_to_armada_fb(fb);
19
20 drm_framebuffer_cleanup(&dfb->fb);
21 drm_gem_object_unreference_unlocked(&dfb->obj->obj);
22 kfree(dfb);
23}
24
25static int armada_fb_create_handle(struct drm_framebuffer *fb,
26 struct drm_file *dfile, unsigned int *handle)
27{
28 struct armada_framebuffer *dfb = drm_fb_to_armada_fb(fb);
29 return drm_gem_handle_create(dfile, &dfb->obj->obj, handle);
30}
31
32static const struct drm_framebuffer_funcs armada_fb_funcs = {
33 .destroy = armada_fb_destroy,
34 .create_handle = armada_fb_create_handle,
35};
36
37struct armada_framebuffer *armada_framebuffer_create(struct drm_device *dev,
38 const struct drm_mode_fb_cmd2 *mode, struct armada_gem_object *obj)
39{
40 struct armada_framebuffer *dfb;
41 uint8_t format, config;
42 int ret;
43
44 switch (mode->pixel_format) {
45#define FMT(drm, fmt, mod) \
46 case DRM_FORMAT_##drm: \
47 format = CFG_##fmt; \
48 config = mod; \
49 break
50 FMT(RGB565, 565, CFG_SWAPRB);
51 FMT(BGR565, 565, 0);
52 FMT(ARGB1555, 1555, CFG_SWAPRB);
53 FMT(ABGR1555, 1555, 0);
54 FMT(RGB888, 888PACK, CFG_SWAPRB);
55 FMT(BGR888, 888PACK, 0);
56 FMT(XRGB8888, X888, CFG_SWAPRB);
57 FMT(XBGR8888, X888, 0);
58 FMT(ARGB8888, 8888, CFG_SWAPRB);
59 FMT(ABGR8888, 8888, 0);
60 FMT(YUYV, 422PACK, CFG_YUV2RGB | CFG_SWAPYU | CFG_SWAPUV);
61 FMT(UYVY, 422PACK, CFG_YUV2RGB);
62 FMT(VYUY, 422PACK, CFG_YUV2RGB | CFG_SWAPUV);
63 FMT(YVYU, 422PACK, CFG_YUV2RGB | CFG_SWAPYU);
64 FMT(YUV422, 422, CFG_YUV2RGB);
65 FMT(YVU422, 422, CFG_YUV2RGB | CFG_SWAPUV);
66 FMT(YUV420, 420, CFG_YUV2RGB);
67 FMT(YVU420, 420, CFG_YUV2RGB | CFG_SWAPUV);
68 FMT(C8, PSEUDO8, 0);
69#undef FMT
70 default:
71 return ERR_PTR(-EINVAL);
72 }
73
74 dfb = kzalloc(sizeof(*dfb), GFP_KERNEL);
75 if (!dfb) {
76 DRM_ERROR("failed to allocate Armada fb object\n");
77 return ERR_PTR(-ENOMEM);
78 }
79
80 dfb->fmt = format;
81 dfb->mod = config;
82 dfb->obj = obj;
83
84 drm_helper_mode_fill_fb_struct(&dfb->fb, mode);
85
86 ret = drm_framebuffer_init(dev, &dfb->fb, &armada_fb_funcs);
87 if (ret) {
88 kfree(dfb);
89 return ERR_PTR(ret);
90 }
91
92 /*
93 * Take a reference on our object as we're successful - the
94 * caller already holds a reference, which keeps us safe for
95 * the above call, but the caller will drop their reference
96 * to it. Hence we need to take our own reference.
97 */
98 drm_gem_object_reference(&obj->obj);
99
100 return dfb;
101}
102
103static struct drm_framebuffer *armada_fb_create(struct drm_device *dev,
104 struct drm_file *dfile, const struct drm_mode_fb_cmd2 *mode)
105{
106 struct armada_gem_object *obj;
107 struct armada_framebuffer *dfb;
108 int ret;
109
110 DRM_DEBUG_DRIVER("w%u h%u pf%08x f%u p%u,%u,%u\n",
111 mode->width, mode->height, mode->pixel_format,
112 mode->flags, mode->pitches[0], mode->pitches[1],
113 mode->pitches[2]);
114
115 /* We can only handle a single plane at the moment */
116 if (drm_format_num_planes(mode->pixel_format) > 1 &&
117 (mode->handles[0] != mode->handles[1] ||
118 mode->handles[0] != mode->handles[2])) {
119 ret = -EINVAL;
120 goto err;
121 }
122
123 obj = armada_gem_object_lookup(dev, dfile, mode->handles[0]);
124 if (!obj) {
125 ret = -ENOENT;
126 goto err;
127 }
128
129 if (obj->obj.import_attach && !obj->sgt) {
130 ret = armada_gem_map_import(obj);
131 if (ret)
132 goto err_unref;
133 }
134
135 /* Framebuffer objects must have a valid device address for scanout */
136 if (obj->dev_addr == DMA_ERROR_CODE) {
137 ret = -EINVAL;
138 goto err_unref;
139 }
140
141 dfb = armada_framebuffer_create(dev, mode, obj);
142 if (IS_ERR(dfb)) {
143 ret = PTR_ERR(dfb);
144 goto err;
145 }
146
147 drm_gem_object_unreference_unlocked(&obj->obj);
148
149 return &dfb->fb;
150
151 err_unref:
152 drm_gem_object_unreference_unlocked(&obj->obj);
153 err:
154 DRM_ERROR("failed to initialize framebuffer: %d\n", ret);
155 return ERR_PTR(ret);
156}
157
158static void armada_output_poll_changed(struct drm_device *dev)
159{
160 struct armada_private *priv = dev->dev_private;
161 struct drm_fb_helper *fbh = priv->fbdev;
162
163 if (fbh)
164 drm_fb_helper_hotplug_event(fbh);
165}
166
167const struct drm_mode_config_funcs armada_drm_mode_config_funcs = {
168 .fb_create = armada_fb_create,
169 .output_poll_changed = armada_output_poll_changed,
170};
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2012 Russell King
4 */
5
6#include <drm/drm_modeset_helper.h>
7#include <drm/drm_fb_helper.h>
8#include <drm/drm_fourcc.h>
9#include <drm/drm_gem_framebuffer_helper.h>
10
11#include "armada_drm.h"
12#include "armada_fb.h"
13#include "armada_gem.h"
14#include "armada_hw.h"
15
16static const struct drm_framebuffer_funcs armada_fb_funcs = {
17 .destroy = drm_gem_fb_destroy,
18 .create_handle = drm_gem_fb_create_handle,
19};
20
21struct armada_framebuffer *armada_framebuffer_create(struct drm_device *dev,
22 const struct drm_mode_fb_cmd2 *mode, struct armada_gem_object *obj)
23{
24 struct armada_framebuffer *dfb;
25 uint8_t format, config;
26 int ret;
27
28 switch (mode->pixel_format) {
29#define FMT(drm, fmt, mod) \
30 case DRM_FORMAT_##drm: \
31 format = CFG_##fmt; \
32 config = mod; \
33 break
34 FMT(RGB565, 565, CFG_SWAPRB);
35 FMT(BGR565, 565, 0);
36 FMT(ARGB1555, 1555, CFG_SWAPRB);
37 FMT(ABGR1555, 1555, 0);
38 FMT(RGB888, 888PACK, CFG_SWAPRB);
39 FMT(BGR888, 888PACK, 0);
40 FMT(XRGB8888, X888, CFG_SWAPRB);
41 FMT(XBGR8888, X888, 0);
42 FMT(ARGB8888, 8888, CFG_SWAPRB);
43 FMT(ABGR8888, 8888, 0);
44 FMT(YUYV, 422PACK, CFG_YUV2RGB | CFG_SWAPYU | CFG_SWAPUV);
45 FMT(UYVY, 422PACK, CFG_YUV2RGB);
46 FMT(VYUY, 422PACK, CFG_YUV2RGB | CFG_SWAPUV);
47 FMT(YVYU, 422PACK, CFG_YUV2RGB | CFG_SWAPYU);
48 FMT(YUV422, 422, CFG_YUV2RGB);
49 FMT(YVU422, 422, CFG_YUV2RGB | CFG_SWAPUV);
50 FMT(YUV420, 420, CFG_YUV2RGB);
51 FMT(YVU420, 420, CFG_YUV2RGB | CFG_SWAPUV);
52 FMT(C8, PSEUDO8, 0);
53#undef FMT
54 default:
55 return ERR_PTR(-EINVAL);
56 }
57
58 dfb = kzalloc(sizeof(*dfb), GFP_KERNEL);
59 if (!dfb) {
60 DRM_ERROR("failed to allocate Armada fb object\n");
61 return ERR_PTR(-ENOMEM);
62 }
63
64 dfb->fmt = format;
65 dfb->mod = config;
66 dfb->fb.obj[0] = &obj->obj;
67
68 drm_helper_mode_fill_fb_struct(dev, &dfb->fb, mode);
69
70 ret = drm_framebuffer_init(dev, &dfb->fb, &armada_fb_funcs);
71 if (ret) {
72 kfree(dfb);
73 return ERR_PTR(ret);
74 }
75
76 /*
77 * Take a reference on our object as we're successful - the
78 * caller already holds a reference, which keeps us safe for
79 * the above call, but the caller will drop their reference
80 * to it. Hence we need to take our own reference.
81 */
82 drm_gem_object_get(&obj->obj);
83
84 return dfb;
85}
86
87struct drm_framebuffer *armada_fb_create(struct drm_device *dev,
88 struct drm_file *dfile, const struct drm_mode_fb_cmd2 *mode)
89{
90 const struct drm_format_info *info = drm_get_format_info(dev, mode);
91 struct armada_gem_object *obj;
92 struct armada_framebuffer *dfb;
93 int ret;
94
95 DRM_DEBUG_DRIVER("w%u h%u pf%08x f%u p%u,%u,%u\n",
96 mode->width, mode->height, mode->pixel_format,
97 mode->flags, mode->pitches[0], mode->pitches[1],
98 mode->pitches[2]);
99
100 /* We can only handle a single plane at the moment */
101 if (info->num_planes > 1 &&
102 (mode->handles[0] != mode->handles[1] ||
103 mode->handles[0] != mode->handles[2])) {
104 ret = -EINVAL;
105 goto err;
106 }
107
108 obj = armada_gem_object_lookup(dfile, mode->handles[0]);
109 if (!obj) {
110 ret = -ENOENT;
111 goto err;
112 }
113
114 if (obj->obj.import_attach && !obj->sgt) {
115 ret = armada_gem_map_import(obj);
116 if (ret)
117 goto err_unref;
118 }
119
120 /* Framebuffer objects must have a valid device address for scanout */
121 if (!obj->mapped) {
122 ret = -EINVAL;
123 goto err_unref;
124 }
125
126 dfb = armada_framebuffer_create(dev, mode, obj);
127 if (IS_ERR(dfb)) {
128 ret = PTR_ERR(dfb);
129 goto err;
130 }
131
132 drm_gem_object_put(&obj->obj);
133
134 return &dfb->fb;
135
136 err_unref:
137 drm_gem_object_put(&obj->obj);
138 err:
139 DRM_ERROR("failed to initialize framebuffer: %d\n", ret);
140 return ERR_PTR(ret);
141}