projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | } |