mdp4_plane.c 6.5 KB

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  1. /*
  2. * Copyright (C) 2013 Red Hat
  3. * Author: Rob Clark <robdclark@gmail.com>
  4. *
  5. * This program is free software; you can redistribute it and/or modify it
  6. * under the terms of the GNU General Public License version 2 as published by
  7. * the Free Software Foundation.
  8. *
  9. * This program is distributed in the hope that it will be useful, but WITHOUT
  10. * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11. * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  12. * more details.
  13. *
  14. * You should have received a copy of the GNU General Public License along with
  15. * this program. If not, see <http://www.gnu.org/licenses/>.
  16. */
  17. #include "mdp4_kms.h"
  18. struct mdp4_plane {
  19. struct drm_plane base;
  20. const char *name;
  21. enum mpd4_pipe pipe;
  22. uint32_t nformats;
  23. uint32_t formats[32];
  24. bool enabled;
  25. };
  26. #define to_mdp4_plane(x) container_of(x, struct mdp4_plane, base)
  27. static struct mdp4_kms *get_kms(struct drm_plane *plane)
  28. {
  29. struct msm_drm_private *priv = plane->dev->dev_private;
  30. return to_mdp4_kms(priv->kms);
  31. }
  32. static int mdp4_plane_update(struct drm_plane *plane,
  33. struct drm_crtc *crtc, struct drm_framebuffer *fb,
  34. int crtc_x, int crtc_y,
  35. unsigned int crtc_w, unsigned int crtc_h,
  36. uint32_t src_x, uint32_t src_y,
  37. uint32_t src_w, uint32_t src_h)
  38. {
  39. struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
  40. mdp4_plane->enabled = true;
  41. if (plane->fb)
  42. drm_framebuffer_unreference(plane->fb);
  43. drm_framebuffer_reference(fb);
  44. return mdp4_plane_mode_set(plane, crtc, fb,
  45. crtc_x, crtc_y, crtc_w, crtc_h,
  46. src_x, src_y, src_w, src_h);
  47. }
  48. static int mdp4_plane_disable(struct drm_plane *plane)
  49. {
  50. struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
  51. DBG("%s: TODO", mdp4_plane->name); // XXX
  52. return 0;
  53. }
  54. static void mdp4_plane_destroy(struct drm_plane *plane)
  55. {
  56. struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
  57. mdp4_plane_disable(plane);
  58. drm_plane_cleanup(plane);
  59. kfree(mdp4_plane);
  60. }
  61. /* helper to install properties which are common to planes and crtcs */
  62. void mdp4_plane_install_properties(struct drm_plane *plane,
  63. struct drm_mode_object *obj)
  64. {
  65. // XXX
  66. }
  67. int mdp4_plane_set_property(struct drm_plane *plane,
  68. struct drm_property *property, uint64_t val)
  69. {
  70. // XXX
  71. return -EINVAL;
  72. }
  73. static const struct drm_plane_funcs mdp4_plane_funcs = {
  74. .update_plane = mdp4_plane_update,
  75. .disable_plane = mdp4_plane_disable,
  76. .destroy = mdp4_plane_destroy,
  77. .set_property = mdp4_plane_set_property,
  78. };
  79. void mdp4_plane_set_scanout(struct drm_plane *plane,
  80. struct drm_framebuffer *fb)
  81. {
  82. struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
  83. struct mdp4_kms *mdp4_kms = get_kms(plane);
  84. enum mpd4_pipe pipe = mdp4_plane->pipe;
  85. uint32_t iova;
  86. mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_STRIDE_A(pipe),
  87. MDP4_PIPE_SRC_STRIDE_A_P0(fb->pitches[0]) |
  88. MDP4_PIPE_SRC_STRIDE_A_P1(fb->pitches[1]));
  89. mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_STRIDE_B(pipe),
  90. MDP4_PIPE_SRC_STRIDE_B_P2(fb->pitches[2]) |
  91. MDP4_PIPE_SRC_STRIDE_B_P3(fb->pitches[3]));
  92. msm_gem_get_iova(msm_framebuffer_bo(fb, 0), mdp4_kms->id, &iova);
  93. mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP0_BASE(pipe), iova);
  94. plane->fb = fb;
  95. }
  96. #define MDP4_VG_PHASE_STEP_DEFAULT 0x20000000
  97. int mdp4_plane_mode_set(struct drm_plane *plane,
  98. struct drm_crtc *crtc, struct drm_framebuffer *fb,
  99. int crtc_x, int crtc_y,
  100. unsigned int crtc_w, unsigned int crtc_h,
  101. uint32_t src_x, uint32_t src_y,
  102. uint32_t src_w, uint32_t src_h)
  103. {
  104. struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
  105. struct mdp4_kms *mdp4_kms = get_kms(plane);
  106. enum mpd4_pipe pipe = mdp4_plane->pipe;
  107. const struct mdp4_format *format;
  108. uint32_t op_mode = 0;
  109. uint32_t phasex_step = MDP4_VG_PHASE_STEP_DEFAULT;
  110. uint32_t phasey_step = MDP4_VG_PHASE_STEP_DEFAULT;
  111. /* src values are in Q16 fixed point, convert to integer: */
  112. src_x = src_x >> 16;
  113. src_y = src_y >> 16;
  114. src_w = src_w >> 16;
  115. src_h = src_h >> 16;
  116. if (src_w != crtc_w) {
  117. op_mode |= MDP4_PIPE_OP_MODE_SCALEX_EN;
  118. /* TODO calc phasex_step */
  119. }
  120. if (src_h != crtc_h) {
  121. op_mode |= MDP4_PIPE_OP_MODE_SCALEY_EN;
  122. /* TODO calc phasey_step */
  123. }
  124. mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_SIZE(pipe),
  125. MDP4_PIPE_SRC_SIZE_WIDTH(src_w) |
  126. MDP4_PIPE_SRC_SIZE_HEIGHT(src_h));
  127. mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_XY(pipe),
  128. MDP4_PIPE_SRC_XY_X(src_x) |
  129. MDP4_PIPE_SRC_XY_Y(src_y));
  130. mdp4_write(mdp4_kms, REG_MDP4_PIPE_DST_SIZE(pipe),
  131. MDP4_PIPE_DST_SIZE_WIDTH(crtc_w) |
  132. MDP4_PIPE_DST_SIZE_HEIGHT(crtc_h));
  133. mdp4_write(mdp4_kms, REG_MDP4_PIPE_DST_XY(pipe),
  134. MDP4_PIPE_SRC_XY_X(crtc_x) |
  135. MDP4_PIPE_SRC_XY_Y(crtc_y));
  136. mdp4_plane_set_scanout(plane, fb);
  137. format = to_mdp4_format(msm_framebuffer_format(fb));
  138. mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_FORMAT(pipe),
  139. MDP4_PIPE_SRC_FORMAT_A_BPC(format->bpc_a) |
  140. MDP4_PIPE_SRC_FORMAT_R_BPC(format->bpc_r) |
  141. MDP4_PIPE_SRC_FORMAT_G_BPC(format->bpc_g) |
  142. MDP4_PIPE_SRC_FORMAT_B_BPC(format->bpc_b) |
  143. COND(format->alpha_enable, MDP4_PIPE_SRC_FORMAT_ALPHA_ENABLE) |
  144. MDP4_PIPE_SRC_FORMAT_CPP(format->cpp - 1) |
  145. MDP4_PIPE_SRC_FORMAT_UNPACK_COUNT(format->unpack_count - 1) |
  146. COND(format->unpack_tight, MDP4_PIPE_SRC_FORMAT_UNPACK_TIGHT));
  147. mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_UNPACK(pipe),
  148. MDP4_PIPE_SRC_UNPACK_ELEM0(format->unpack[0]) |
  149. MDP4_PIPE_SRC_UNPACK_ELEM1(format->unpack[1]) |
  150. MDP4_PIPE_SRC_UNPACK_ELEM2(format->unpack[2]) |
  151. MDP4_PIPE_SRC_UNPACK_ELEM3(format->unpack[3]));
  152. mdp4_write(mdp4_kms, REG_MDP4_PIPE_OP_MODE(pipe), op_mode);
  153. mdp4_write(mdp4_kms, REG_MDP4_PIPE_PHASEX_STEP(pipe), phasex_step);
  154. mdp4_write(mdp4_kms, REG_MDP4_PIPE_PHASEY_STEP(pipe), phasey_step);
  155. plane->crtc = crtc;
  156. return 0;
  157. }
  158. static const char *pipe_names[] = {
  159. "VG1", "VG2",
  160. "RGB1", "RGB2", "RGB3",
  161. "VG3", "VG4",
  162. };
  163. enum mpd4_pipe mdp4_plane_pipe(struct drm_plane *plane)
  164. {
  165. struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
  166. return mdp4_plane->pipe;
  167. }
  168. /* initialize plane */
  169. struct drm_plane *mdp4_plane_init(struct drm_device *dev,
  170. enum mpd4_pipe pipe_id, bool private_plane)
  171. {
  172. struct msm_drm_private *priv = dev->dev_private;
  173. struct drm_plane *plane = NULL;
  174. struct mdp4_plane *mdp4_plane;
  175. int ret;
  176. mdp4_plane = kzalloc(sizeof(*mdp4_plane), GFP_KERNEL);
  177. if (!mdp4_plane) {
  178. ret = -ENOMEM;
  179. goto fail;
  180. }
  181. plane = &mdp4_plane->base;
  182. mdp4_plane->pipe = pipe_id;
  183. mdp4_plane->name = pipe_names[pipe_id];
  184. drm_plane_init(dev, plane, (1 << priv->num_crtcs) - 1, &mdp4_plane_funcs,
  185. mdp4_plane->formats, mdp4_plane->nformats, private_plane);
  186. mdp4_plane_install_properties(plane, &plane->base);
  187. return plane;
  188. fail:
  189. if (plane)
  190. mdp4_plane_destroy(plane);
  191. return ERR_PTR(ret);
  192. }