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51c13278 LP |
1 | /* |
2 | * shmob_drm_kms.c -- SH Mobile DRM Mode Setting | |
3 | * | |
4 | * Copyright (C) 2012 Renesas Corporation | |
5 | * | |
6 | * 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 <video/sh_mobile_meram.h> | |
21 | ||
22 | #include "shmob_drm_crtc.h" | |
23 | #include "shmob_drm_drv.h" | |
24 | #include "shmob_drm_kms.h" | |
25 | #include "shmob_drm_regs.h" | |
26 | ||
27 | /* ----------------------------------------------------------------------------- | |
28 | * Format helpers | |
29 | */ | |
30 | ||
31 | static const struct shmob_drm_format_info shmob_drm_format_infos[] = { | |
32 | { | |
33 | .fourcc = DRM_FORMAT_RGB565, | |
34 | .bpp = 16, | |
35 | .yuv = false, | |
36 | .lddfr = LDDFR_PKF_RGB16, | |
37 | .meram = SH_MOBILE_MERAM_PF_RGB, | |
38 | }, { | |
39 | .fourcc = DRM_FORMAT_RGB888, | |
40 | .bpp = 24, | |
41 | .yuv = false, | |
42 | .lddfr = LDDFR_PKF_RGB24, | |
43 | .meram = SH_MOBILE_MERAM_PF_RGB, | |
44 | }, { | |
45 | .fourcc = DRM_FORMAT_ARGB8888, | |
46 | .bpp = 32, | |
47 | .yuv = false, | |
48 | .lddfr = LDDFR_PKF_ARGB32, | |
49 | .meram = SH_MOBILE_MERAM_PF_RGB, | |
50 | }, { | |
51 | .fourcc = DRM_FORMAT_NV12, | |
52 | .bpp = 12, | |
53 | .yuv = true, | |
54 | .lddfr = LDDFR_CC | LDDFR_YF_420, | |
55 | .meram = SH_MOBILE_MERAM_PF_NV, | |
56 | }, { | |
57 | .fourcc = DRM_FORMAT_NV21, | |
58 | .bpp = 12, | |
59 | .yuv = true, | |
60 | .lddfr = LDDFR_CC | LDDFR_YF_420, | |
61 | .meram = SH_MOBILE_MERAM_PF_NV, | |
62 | }, { | |
63 | .fourcc = DRM_FORMAT_NV16, | |
64 | .bpp = 16, | |
65 | .yuv = true, | |
66 | .lddfr = LDDFR_CC | LDDFR_YF_422, | |
67 | .meram = SH_MOBILE_MERAM_PF_NV, | |
68 | }, { | |
69 | .fourcc = DRM_FORMAT_NV61, | |
70 | .bpp = 16, | |
71 | .yuv = true, | |
72 | .lddfr = LDDFR_CC | LDDFR_YF_422, | |
73 | .meram = SH_MOBILE_MERAM_PF_NV, | |
74 | }, { | |
75 | .fourcc = DRM_FORMAT_NV24, | |
76 | .bpp = 24, | |
77 | .yuv = true, | |
78 | .lddfr = LDDFR_CC | LDDFR_YF_444, | |
79 | .meram = SH_MOBILE_MERAM_PF_NV24, | |
80 | }, { | |
81 | .fourcc = DRM_FORMAT_NV42, | |
82 | .bpp = 24, | |
83 | .yuv = true, | |
84 | .lddfr = LDDFR_CC | LDDFR_YF_444, | |
85 | .meram = SH_MOBILE_MERAM_PF_NV24, | |
86 | }, | |
87 | }; | |
88 | ||
89 | const struct shmob_drm_format_info *shmob_drm_format_info(u32 fourcc) | |
90 | { | |
91 | unsigned int i; | |
92 | ||
93 | for (i = 0; i < ARRAY_SIZE(shmob_drm_format_infos); ++i) { | |
94 | if (shmob_drm_format_infos[i].fourcc == fourcc) | |
95 | return &shmob_drm_format_infos[i]; | |
96 | } | |
97 | ||
98 | return NULL; | |
99 | } | |
100 | ||
101 | /* ----------------------------------------------------------------------------- | |
102 | * Frame buffer | |
103 | */ | |
104 | ||
105 | static struct drm_framebuffer * | |
106 | shmob_drm_fb_create(struct drm_device *dev, struct drm_file *file_priv, | |
107 | struct drm_mode_fb_cmd2 *mode_cmd) | |
108 | { | |
109 | const struct shmob_drm_format_info *format; | |
110 | ||
111 | format = shmob_drm_format_info(mode_cmd->pixel_format); | |
112 | if (format == NULL) { | |
113 | dev_dbg(dev->dev, "unsupported pixel format %08x\n", | |
114 | mode_cmd->pixel_format); | |
115 | return ERR_PTR(-EINVAL); | |
116 | } | |
117 | ||
118 | if (mode_cmd->pitches[0] & 7 || mode_cmd->pitches[0] >= 65536) { | |
2e7c9b35 | 119 | dev_dbg(dev->dev, "invalid pitch value %u\n", |
51c13278 LP |
120 | mode_cmd->pitches[0]); |
121 | return ERR_PTR(-EINVAL); | |
122 | } | |
123 | ||
124 | if (format->yuv) { | |
125 | unsigned int chroma_cpp = format->bpp == 24 ? 2 : 1; | |
126 | ||
127 | if (mode_cmd->pitches[1] != mode_cmd->pitches[0] * chroma_cpp) { | |
128 | dev_dbg(dev->dev, | |
129 | "luma and chroma pitches do not match\n"); | |
130 | return ERR_PTR(-EINVAL); | |
131 | } | |
132 | } | |
133 | ||
134 | return drm_fb_cma_create(dev, file_priv, mode_cmd); | |
135 | } | |
136 | ||
137 | static const struct drm_mode_config_funcs shmob_drm_mode_config_funcs = { | |
138 | .fb_create = shmob_drm_fb_create, | |
139 | }; | |
140 | ||
141 | int shmob_drm_modeset_init(struct shmob_drm_device *sdev) | |
142 | { | |
143 | drm_mode_config_init(sdev->ddev); | |
144 | ||
145 | shmob_drm_crtc_create(sdev); | |
146 | shmob_drm_encoder_create(sdev); | |
147 | shmob_drm_connector_create(sdev, &sdev->encoder.encoder); | |
148 | ||
149 | drm_kms_helper_poll_init(sdev->ddev); | |
150 | ||
151 | sdev->ddev->mode_config.min_width = 0; | |
152 | sdev->ddev->mode_config.min_height = 0; | |
153 | sdev->ddev->mode_config.max_width = 4095; | |
154 | sdev->ddev->mode_config.max_height = 4095; | |
155 | sdev->ddev->mode_config.funcs = &shmob_drm_mode_config_funcs; | |
156 | ||
157 | drm_helper_disable_unused_functions(sdev->ddev); | |
158 | ||
159 | return 0; | |
160 | } |