Commit | Line | Data |
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4bf8e196 LP |
1 | /* |
2 | * rcar_du_kms.c -- R-Car Display Unit Mode Setting | |
3 | * | |
4 | * Copyright (C) 2013 Renesas Corporation | |
5 | * | |
6 | * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com) | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | */ | |
13 | ||
14 | #include <drm/drmP.h> | |
15 | #include <drm/drm_crtc.h> | |
16 | #include <drm/drm_crtc_helper.h> | |
17 | #include <drm/drm_fb_cma_helper.h> | |
18 | #include <drm/drm_gem_cma_helper.h> | |
19 | ||
20 | #include "rcar_du_crtc.h" | |
21 | #include "rcar_du_drv.h" | |
6978f123 | 22 | #include "rcar_du_encoder.h" |
4bf8e196 | 23 | #include "rcar_du_kms.h" |
90374b5c | 24 | #include "rcar_du_lvdsenc.h" |
4bf8e196 | 25 | #include "rcar_du_regs.h" |
4bf8e196 LP |
26 | |
27 | /* ----------------------------------------------------------------------------- | |
28 | * Format helpers | |
29 | */ | |
30 | ||
31 | static const struct rcar_du_format_info rcar_du_format_infos[] = { | |
32 | { | |
33 | .fourcc = DRM_FORMAT_RGB565, | |
34 | .bpp = 16, | |
35 | .planes = 1, | |
36 | .pnmr = PnMR_SPIM_TP | PnMR_DDDF_16BPP, | |
37 | .edf = PnDDCR4_EDF_NONE, | |
38 | }, { | |
39 | .fourcc = DRM_FORMAT_ARGB1555, | |
40 | .bpp = 16, | |
41 | .planes = 1, | |
42 | .pnmr = PnMR_SPIM_ALP | PnMR_DDDF_ARGB, | |
43 | .edf = PnDDCR4_EDF_NONE, | |
44 | }, { | |
45 | .fourcc = DRM_FORMAT_XRGB1555, | |
46 | .bpp = 16, | |
47 | .planes = 1, | |
48 | .pnmr = PnMR_SPIM_ALP | PnMR_DDDF_ARGB, | |
49 | .edf = PnDDCR4_EDF_NONE, | |
50 | }, { | |
51 | .fourcc = DRM_FORMAT_XRGB8888, | |
52 | .bpp = 32, | |
53 | .planes = 1, | |
54 | .pnmr = PnMR_SPIM_TP | PnMR_DDDF_16BPP, | |
55 | .edf = PnDDCR4_EDF_RGB888, | |
56 | }, { | |
57 | .fourcc = DRM_FORMAT_ARGB8888, | |
58 | .bpp = 32, | |
59 | .planes = 1, | |
60 | .pnmr = PnMR_SPIM_ALP | PnMR_DDDF_16BPP, | |
61 | .edf = PnDDCR4_EDF_ARGB8888, | |
62 | }, { | |
63 | .fourcc = DRM_FORMAT_UYVY, | |
64 | .bpp = 16, | |
65 | .planes = 1, | |
66 | .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC, | |
67 | .edf = PnDDCR4_EDF_NONE, | |
68 | }, { | |
69 | .fourcc = DRM_FORMAT_YUYV, | |
70 | .bpp = 16, | |
71 | .planes = 1, | |
72 | .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC, | |
73 | .edf = PnDDCR4_EDF_NONE, | |
74 | }, { | |
75 | .fourcc = DRM_FORMAT_NV12, | |
76 | .bpp = 12, | |
77 | .planes = 2, | |
78 | .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC, | |
79 | .edf = PnDDCR4_EDF_NONE, | |
80 | }, { | |
81 | .fourcc = DRM_FORMAT_NV21, | |
82 | .bpp = 12, | |
83 | .planes = 2, | |
84 | .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC, | |
85 | .edf = PnDDCR4_EDF_NONE, | |
86 | }, { | |
87 | /* In YUV 4:2:2, only NV16 is supported (NV61 isn't) */ | |
88 | .fourcc = DRM_FORMAT_NV16, | |
89 | .bpp = 16, | |
90 | .planes = 2, | |
91 | .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC, | |
92 | .edf = PnDDCR4_EDF_NONE, | |
93 | }, | |
94 | }; | |
95 | ||
96 | const struct rcar_du_format_info *rcar_du_format_info(u32 fourcc) | |
97 | { | |
98 | unsigned int i; | |
99 | ||
100 | for (i = 0; i < ARRAY_SIZE(rcar_du_format_infos); ++i) { | |
101 | if (rcar_du_format_infos[i].fourcc == fourcc) | |
102 | return &rcar_du_format_infos[i]; | |
103 | } | |
104 | ||
105 | return NULL; | |
106 | } | |
107 | ||
4bf8e196 LP |
108 | /* ----------------------------------------------------------------------------- |
109 | * Frame buffer | |
110 | */ | |
111 | ||
59e32642 LP |
112 | int rcar_du_dumb_create(struct drm_file *file, struct drm_device *dev, |
113 | struct drm_mode_create_dumb *args) | |
114 | { | |
9e2d2de9 | 115 | struct rcar_du_device *rcdu = dev->dev_private; |
59e32642 LP |
116 | unsigned int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8); |
117 | unsigned int align; | |
118 | ||
9e2d2de9 LP |
119 | /* The R8A7779 DU requires a 16 pixels pitch alignment as documented, |
120 | * but the R8A7790 DU seems to require a 128 bytes pitch alignment. | |
121 | */ | |
e8355e0d | 122 | if (rcar_du_needs(rcdu, RCAR_DU_QUIRK_ALIGN_128B)) |
9e2d2de9 LP |
123 | align = 128; |
124 | else | |
125 | align = 16 * args->bpp / 8; | |
126 | ||
59e32642 LP |
127 | args->pitch = roundup(max(args->pitch, min_pitch), align); |
128 | ||
129 | return drm_gem_cma_dumb_create(file, dev, args); | |
130 | } | |
131 | ||
4bf8e196 LP |
132 | static struct drm_framebuffer * |
133 | rcar_du_fb_create(struct drm_device *dev, struct drm_file *file_priv, | |
134 | struct drm_mode_fb_cmd2 *mode_cmd) | |
135 | { | |
9e2d2de9 | 136 | struct rcar_du_device *rcdu = dev->dev_private; |
4bf8e196 | 137 | const struct rcar_du_format_info *format; |
59e32642 | 138 | unsigned int align; |
4bf8e196 LP |
139 | |
140 | format = rcar_du_format_info(mode_cmd->pixel_format); | |
141 | if (format == NULL) { | |
142 | dev_dbg(dev->dev, "unsupported pixel format %08x\n", | |
143 | mode_cmd->pixel_format); | |
144 | return ERR_PTR(-EINVAL); | |
145 | } | |
146 | ||
e8355e0d | 147 | if (rcar_du_needs(rcdu, RCAR_DU_QUIRK_ALIGN_128B)) |
9e2d2de9 LP |
148 | align = 128; |
149 | else | |
150 | align = 16 * format->bpp / 8; | |
59e32642 LP |
151 | |
152 | if (mode_cmd->pitches[0] & (align - 1) || | |
153 | mode_cmd->pitches[0] >= 8192) { | |
4bf8e196 LP |
154 | dev_dbg(dev->dev, "invalid pitch value %u\n", |
155 | mode_cmd->pitches[0]); | |
156 | return ERR_PTR(-EINVAL); | |
157 | } | |
158 | ||
159 | if (format->planes == 2) { | |
160 | if (mode_cmd->pitches[1] != mode_cmd->pitches[0]) { | |
161 | dev_dbg(dev->dev, | |
162 | "luma and chroma pitches do not match\n"); | |
163 | return ERR_PTR(-EINVAL); | |
164 | } | |
165 | } | |
166 | ||
167 | return drm_fb_cma_create(dev, file_priv, mode_cmd); | |
168 | } | |
169 | ||
3864c6f4 LP |
170 | static void rcar_du_output_poll_changed(struct drm_device *dev) |
171 | { | |
172 | struct rcar_du_device *rcdu = dev->dev_private; | |
173 | ||
174 | drm_fbdev_cma_hotplug_event(rcdu->fbdev); | |
175 | } | |
176 | ||
4bf8e196 LP |
177 | static const struct drm_mode_config_funcs rcar_du_mode_config_funcs = { |
178 | .fb_create = rcar_du_fb_create, | |
3864c6f4 | 179 | .output_poll_changed = rcar_du_output_poll_changed, |
4bf8e196 LP |
180 | }; |
181 | ||
182 | int rcar_du_modeset_init(struct rcar_du_device *rcdu) | |
183 | { | |
a5f0ef59 LP |
184 | static const unsigned int mmio_offsets[] = { |
185 | DU0_REG_OFFSET, DU2_REG_OFFSET | |
186 | }; | |
187 | ||
4bf8e196 LP |
188 | struct drm_device *dev = rcdu->ddev; |
189 | struct drm_encoder *encoder; | |
3864c6f4 | 190 | struct drm_fbdev_cma *fbdev; |
a5f0ef59 | 191 | unsigned int num_groups; |
4bf8e196 LP |
192 | unsigned int i; |
193 | int ret; | |
194 | ||
3864c6f4 | 195 | drm_mode_config_init(dev); |
4bf8e196 | 196 | |
3864c6f4 LP |
197 | dev->mode_config.min_width = 0; |
198 | dev->mode_config.min_height = 0; | |
199 | dev->mode_config.max_width = 4095; | |
200 | dev->mode_config.max_height = 2047; | |
201 | dev->mode_config.funcs = &rcar_du_mode_config_funcs; | |
4bf8e196 | 202 | |
a5f0ef59 LP |
203 | rcdu->num_crtcs = rcdu->info->num_crtcs; |
204 | ||
205 | /* Initialize the groups. */ | |
206 | num_groups = DIV_ROUND_UP(rcdu->num_crtcs, 2); | |
207 | ||
208 | for (i = 0; i < num_groups; ++i) { | |
209 | struct rcar_du_group *rgrp = &rcdu->groups[i]; | |
cb2025d2 | 210 | |
a5f0ef59 LP |
211 | rgrp->dev = rcdu; |
212 | rgrp->mmio_offset = mmio_offsets[i]; | |
213 | rgrp->index = i; | |
4bf8e196 | 214 | |
a5f0ef59 | 215 | ret = rcar_du_planes_init(rgrp); |
3463ff67 LP |
216 | if (ret < 0) |
217 | return ret; | |
218 | } | |
4bf8e196 | 219 | |
a5f0ef59 LP |
220 | /* Create the CRTCs. */ |
221 | for (i = 0; i < rcdu->num_crtcs; ++i) { | |
222 | struct rcar_du_group *rgrp = &rcdu->groups[i / 2]; | |
223 | ||
224 | ret = rcar_du_crtc_create(rgrp, i); | |
225 | if (ret < 0) | |
226 | return ret; | |
227 | } | |
4bf8e196 | 228 | |
a5f0ef59 | 229 | /* Initialize the encoders. */ |
90374b5c LP |
230 | ret = rcar_du_lvdsenc_init(rcdu); |
231 | if (ret < 0) | |
232 | return ret; | |
233 | ||
4bf8e196 LP |
234 | for (i = 0; i < rcdu->pdata->num_encoders; ++i) { |
235 | const struct rcar_du_encoder_data *pdata = | |
236 | &rcdu->pdata->encoders[i]; | |
ef67a902 LP |
237 | const struct rcar_du_output_routing *route = |
238 | &rcdu->info->routes[pdata->output]; | |
4bf8e196 | 239 | |
9194731c | 240 | if (pdata->type == RCAR_DU_ENCODER_UNUSED) |
6978f123 LP |
241 | continue; |
242 | ||
ef67a902 LP |
243 | if (pdata->output >= RCAR_DU_OUTPUT_MAX || |
244 | route->possible_crtcs == 0) { | |
4bf8e196 LP |
245 | dev_warn(rcdu->dev, |
246 | "encoder %u references unexisting output %u, skipping\n", | |
247 | i, pdata->output); | |
248 | continue; | |
249 | } | |
250 | ||
d9961b22 LP |
251 | ret = rcar_du_encoder_init(rcdu, pdata->type, pdata->output, |
252 | pdata); | |
253 | if (ret < 0) | |
254 | return ret; | |
4bf8e196 LP |
255 | } |
256 | ||
ef67a902 LP |
257 | /* Set the possible CRTCs and possible clones. There's always at least |
258 | * one way for all encoders to clone each other, set all bits in the | |
259 | * possible clones field. | |
4bf8e196 LP |
260 | */ |
261 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
262 | struct rcar_du_encoder *renc = to_rcar_encoder(encoder); | |
ef67a902 LP |
263 | const struct rcar_du_output_routing *route = |
264 | &rcdu->info->routes[renc->output]; | |
4bf8e196 | 265 | |
ef67a902 LP |
266 | encoder->possible_crtcs = route->possible_crtcs; |
267 | encoder->possible_clones = (1 << rcdu->pdata->num_encoders) - 1; | |
4bf8e196 LP |
268 | } |
269 | ||
a5f0ef59 LP |
270 | /* Now that the CRTCs have been initialized register the planes. */ |
271 | for (i = 0; i < num_groups; ++i) { | |
272 | ret = rcar_du_planes_register(&rcdu->groups[i]); | |
273 | if (ret < 0) | |
274 | return ret; | |
275 | } | |
4bf8e196 | 276 | |
3864c6f4 LP |
277 | drm_kms_helper_poll_init(dev); |
278 | ||
279 | drm_helper_disable_unused_functions(dev); | |
280 | ||
281 | fbdev = drm_fbdev_cma_init(dev, 32, dev->mode_config.num_crtc, | |
282 | dev->mode_config.num_connector); | |
283 | if (IS_ERR(fbdev)) | |
284 | return PTR_ERR(fbdev); | |
285 | ||
286 | #ifndef CONFIG_FRAMEBUFFER_CONSOLE | |
287 | drm_fbdev_cma_restore_mode(fbdev); | |
288 | #endif | |
4bf8e196 | 289 | |
3864c6f4 | 290 | rcdu->fbdev = fbdev; |
4bf8e196 LP |
291 | |
292 | return 0; | |
293 | } |