Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 1 | /* |
| 2 | * shmob_drm_plane.c -- SH Mobile DRM Planes |
| 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_drv.h" |
| 23 | #include "shmob_drm_kms.h" |
| 24 | #include "shmob_drm_plane.h" |
| 25 | #include "shmob_drm_regs.h" |
| 26 | |
| 27 | struct shmob_drm_plane { |
| 28 | struct drm_plane plane; |
| 29 | unsigned int index; |
| 30 | unsigned int alpha; |
| 31 | |
| 32 | const struct shmob_drm_format_info *format; |
| 33 | unsigned long dma[2]; |
| 34 | |
| 35 | unsigned int src_x; |
| 36 | unsigned int src_y; |
| 37 | unsigned int crtc_x; |
| 38 | unsigned int crtc_y; |
| 39 | unsigned int crtc_w; |
| 40 | unsigned int crtc_h; |
| 41 | }; |
| 42 | |
| 43 | #define to_shmob_plane(p) container_of(p, struct shmob_drm_plane, plane) |
| 44 | |
| 45 | static void shmob_drm_plane_compute_base(struct shmob_drm_plane *splane, |
| 46 | struct drm_framebuffer *fb, |
| 47 | int x, int y) |
| 48 | { |
| 49 | struct drm_gem_cma_object *gem; |
| 50 | unsigned int bpp; |
| 51 | |
| 52 | bpp = splane->format->yuv ? 8 : splane->format->bpp; |
| 53 | gem = drm_fb_cma_get_gem_obj(fb, 0); |
| 54 | splane->dma[0] = gem->paddr + fb->offsets[0] |
| 55 | + y * fb->pitches[0] + x * bpp / 8; |
| 56 | |
| 57 | if (splane->format->yuv) { |
| 58 | bpp = splane->format->bpp - 8; |
| 59 | gem = drm_fb_cma_get_gem_obj(fb, 1); |
| 60 | splane->dma[1] = gem->paddr + fb->offsets[1] |
| 61 | + y / (bpp == 4 ? 2 : 1) * fb->pitches[1] |
| 62 | + x * (bpp == 16 ? 2 : 1); |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | static void __shmob_drm_plane_setup(struct shmob_drm_plane *splane, |
| 67 | struct drm_framebuffer *fb) |
| 68 | { |
| 69 | struct shmob_drm_device *sdev = splane->plane.dev->dev_private; |
| 70 | u32 format; |
| 71 | |
| 72 | /* TODO: Support ROP3 mode */ |
| 73 | format = LDBBSIFR_EN | (splane->alpha << LDBBSIFR_LAY_SHIFT); |
| 74 | |
| 75 | switch (splane->format->fourcc) { |
| 76 | case DRM_FORMAT_RGB565: |
| 77 | case DRM_FORMAT_NV21: |
| 78 | case DRM_FORMAT_NV61: |
| 79 | case DRM_FORMAT_NV42: |
| 80 | format |= LDBBSIFR_SWPL | LDBBSIFR_SWPW; |
| 81 | break; |
| 82 | case DRM_FORMAT_RGB888: |
| 83 | case DRM_FORMAT_NV12: |
| 84 | case DRM_FORMAT_NV16: |
| 85 | case DRM_FORMAT_NV24: |
| 86 | format |= LDBBSIFR_SWPL | LDBBSIFR_SWPW | LDBBSIFR_SWPB; |
| 87 | break; |
| 88 | case DRM_FORMAT_ARGB8888: |
| 89 | default: |
| 90 | format |= LDBBSIFR_SWPL; |
| 91 | break; |
| 92 | } |
| 93 | |
| 94 | switch (splane->format->fourcc) { |
| 95 | case DRM_FORMAT_RGB565: |
| 96 | format |= LDBBSIFR_AL_1 | LDBBSIFR_RY | LDBBSIFR_RPKF_RGB16; |
| 97 | break; |
| 98 | case DRM_FORMAT_RGB888: |
| 99 | format |= LDBBSIFR_AL_1 | LDBBSIFR_RY | LDBBSIFR_RPKF_RGB24; |
| 100 | break; |
| 101 | case DRM_FORMAT_ARGB8888: |
| 102 | format |= LDBBSIFR_AL_PK | LDBBSIFR_RY | LDDFR_PKF_ARGB32; |
| 103 | break; |
| 104 | case DRM_FORMAT_NV12: |
| 105 | case DRM_FORMAT_NV21: |
| 106 | format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_420; |
| 107 | break; |
| 108 | case DRM_FORMAT_NV16: |
| 109 | case DRM_FORMAT_NV61: |
| 110 | format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_422; |
| 111 | break; |
| 112 | case DRM_FORMAT_NV24: |
| 113 | case DRM_FORMAT_NV42: |
| 114 | format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_444; |
| 115 | break; |
| 116 | } |
| 117 | |
| 118 | #define plane_reg_dump(sdev, splane, reg) \ |
| 119 | dev_dbg(sdev->ddev->dev, "%s(%u): %s 0x%08x 0x%08x\n", __func__, \ |
| 120 | splane->index, #reg, \ |
| 121 | lcdc_read(sdev, reg(splane->index)), \ |
| 122 | lcdc_read(sdev, reg(splane->index) + LCDC_SIDE_B_OFFSET)) |
| 123 | |
| 124 | plane_reg_dump(sdev, splane, LDBnBSIFR); |
| 125 | plane_reg_dump(sdev, splane, LDBnBSSZR); |
| 126 | plane_reg_dump(sdev, splane, LDBnBLOCR); |
| 127 | plane_reg_dump(sdev, splane, LDBnBSMWR); |
| 128 | plane_reg_dump(sdev, splane, LDBnBSAYR); |
| 129 | plane_reg_dump(sdev, splane, LDBnBSACR); |
| 130 | |
| 131 | lcdc_write(sdev, LDBCR, LDBCR_UPC(splane->index)); |
| 132 | dev_dbg(sdev->ddev->dev, "%s(%u): %s 0x%08x\n", __func__, splane->index, |
| 133 | "LDBCR", lcdc_read(sdev, LDBCR)); |
| 134 | |
| 135 | lcdc_write(sdev, LDBnBSIFR(splane->index), format); |
| 136 | |
| 137 | lcdc_write(sdev, LDBnBSSZR(splane->index), |
| 138 | (splane->crtc_h << LDBBSSZR_BVSS_SHIFT) | |
| 139 | (splane->crtc_w << LDBBSSZR_BHSS_SHIFT)); |
| 140 | lcdc_write(sdev, LDBnBLOCR(splane->index), |
| 141 | (splane->crtc_y << LDBBLOCR_CVLC_SHIFT) | |
| 142 | (splane->crtc_x << LDBBLOCR_CHLC_SHIFT)); |
| 143 | lcdc_write(sdev, LDBnBSMWR(splane->index), |
| 144 | fb->pitches[0] << LDBBSMWR_BSMW_SHIFT); |
| 145 | |
| 146 | shmob_drm_plane_compute_base(splane, fb, splane->src_x, splane->src_y); |
| 147 | |
| 148 | lcdc_write(sdev, LDBnBSAYR(splane->index), splane->dma[0]); |
| 149 | if (splane->format->yuv) |
| 150 | lcdc_write(sdev, LDBnBSACR(splane->index), splane->dma[1]); |
| 151 | |
| 152 | lcdc_write(sdev, LDBCR, |
| 153 | LDBCR_UPF(splane->index) | LDBCR_UPD(splane->index)); |
| 154 | dev_dbg(sdev->ddev->dev, "%s(%u): %s 0x%08x\n", __func__, splane->index, |
| 155 | "LDBCR", lcdc_read(sdev, LDBCR)); |
| 156 | |
| 157 | plane_reg_dump(sdev, splane, LDBnBSIFR); |
| 158 | plane_reg_dump(sdev, splane, LDBnBSSZR); |
| 159 | plane_reg_dump(sdev, splane, LDBnBLOCR); |
| 160 | plane_reg_dump(sdev, splane, LDBnBSMWR); |
| 161 | plane_reg_dump(sdev, splane, LDBnBSAYR); |
| 162 | plane_reg_dump(sdev, splane, LDBnBSACR); |
| 163 | } |
| 164 | |
| 165 | void shmob_drm_plane_setup(struct drm_plane *plane) |
| 166 | { |
| 167 | struct shmob_drm_plane *splane = to_shmob_plane(plane); |
| 168 | |
| 169 | if (plane->fb == NULL || !plane->enabled) |
| 170 | return; |
| 171 | |
| 172 | __shmob_drm_plane_setup(splane, plane->fb); |
| 173 | } |
| 174 | |
| 175 | static int |
| 176 | shmob_drm_plane_update(struct drm_plane *plane, struct drm_crtc *crtc, |
| 177 | struct drm_framebuffer *fb, int crtc_x, int crtc_y, |
| 178 | unsigned int crtc_w, unsigned int crtc_h, |
| 179 | uint32_t src_x, uint32_t src_y, |
| 180 | uint32_t src_w, uint32_t src_h) |
| 181 | { |
| 182 | struct shmob_drm_plane *splane = to_shmob_plane(plane); |
| 183 | struct shmob_drm_device *sdev = plane->dev->dev_private; |
| 184 | const struct shmob_drm_format_info *format; |
| 185 | |
| 186 | format = shmob_drm_format_info(fb->pixel_format); |
| 187 | if (format == NULL) { |
| 188 | dev_dbg(sdev->dev, "update_plane: unsupported format %08x\n", |
| 189 | fb->pixel_format); |
| 190 | return -EINVAL; |
| 191 | } |
| 192 | |
| 193 | if (src_w >> 16 != crtc_w || src_h >> 16 != crtc_h) { |
| 194 | dev_dbg(sdev->dev, "%s: scaling not supported\n", __func__); |
| 195 | return -EINVAL; |
| 196 | } |
| 197 | |
| 198 | splane->format = format; |
| 199 | |
| 200 | splane->src_x = src_x >> 16; |
| 201 | splane->src_y = src_y >> 16; |
| 202 | splane->crtc_x = crtc_x; |
| 203 | splane->crtc_y = crtc_y; |
| 204 | splane->crtc_w = crtc_w; |
| 205 | splane->crtc_h = crtc_h; |
| 206 | |
| 207 | __shmob_drm_plane_setup(splane, fb); |
| 208 | return 0; |
| 209 | } |
| 210 | |
| 211 | static int shmob_drm_plane_disable(struct drm_plane *plane) |
| 212 | { |
| 213 | struct shmob_drm_plane *splane = to_shmob_plane(plane); |
| 214 | struct shmob_drm_device *sdev = plane->dev->dev_private; |
| 215 | |
| 216 | splane->format = NULL; |
| 217 | |
| 218 | lcdc_write(sdev, LDBnBSIFR(splane->index), 0); |
| 219 | return 0; |
| 220 | } |
| 221 | |
| 222 | static void shmob_drm_plane_destroy(struct drm_plane *plane) |
| 223 | { |
| 224 | struct shmob_drm_plane *splane = to_shmob_plane(plane); |
| 225 | |
| 226 | shmob_drm_plane_disable(plane); |
| 227 | drm_plane_cleanup(plane); |
| 228 | kfree(splane); |
| 229 | } |
| 230 | |
| 231 | static const struct drm_plane_funcs shmob_drm_plane_funcs = { |
| 232 | .update_plane = shmob_drm_plane_update, |
| 233 | .disable_plane = shmob_drm_plane_disable, |
| 234 | .destroy = shmob_drm_plane_destroy, |
| 235 | }; |
| 236 | |
| 237 | static const uint32_t formats[] = { |
| 238 | DRM_FORMAT_RGB565, |
| 239 | DRM_FORMAT_RGB888, |
| 240 | DRM_FORMAT_ARGB8888, |
| 241 | DRM_FORMAT_NV12, |
| 242 | DRM_FORMAT_NV21, |
| 243 | DRM_FORMAT_NV16, |
| 244 | DRM_FORMAT_NV61, |
| 245 | DRM_FORMAT_NV24, |
| 246 | DRM_FORMAT_NV42, |
| 247 | }; |
| 248 | |
| 249 | int shmob_drm_plane_create(struct shmob_drm_device *sdev, unsigned int index) |
| 250 | { |
| 251 | struct shmob_drm_plane *splane; |
| 252 | int ret; |
| 253 | |
| 254 | splane = kzalloc(sizeof(*splane), GFP_KERNEL); |
| 255 | if (splane == NULL) |
| 256 | return -ENOMEM; |
| 257 | |
| 258 | splane->index = index; |
| 259 | splane->alpha = 255; |
| 260 | |
| 261 | ret = drm_plane_init(sdev->ddev, &splane->plane, 1, |
| 262 | &shmob_drm_plane_funcs, formats, |
| 263 | ARRAY_SIZE(formats), false); |
| 264 | if (ret < 0) |
| 265 | kfree(splane); |
| 266 | |
| 267 | return ret; |
| 268 | } |