1 /* 2 * Copyright (C) STMicroelectronics SA 2014 3 * Authors: Benjamin Gaignard <benjamin.gaignard@st.com> 4 * Fabien Dessenne <fabien.dessenne@st.com> 5 * for STMicroelectronics. 6 * License terms: GNU General Public License (GPL), version 2 7 */ 8 9 #include <drm/drmP.h> 10 #include <drm/drm_fb_cma_helper.h> 11 #include <drm/drm_gem_cma_helper.h> 12 13 #include "sti_compositor.h" 14 #include "sti_drv.h" 15 #include "sti_plane.h" 16 17 /* (Background) < GDP0 < GDP1 < HQVDP0 < GDP2 < GDP3 < (ForeGround) */ 18 enum sti_plane_desc sti_plane_default_zorder[] = { 19 STI_GDP_0, 20 STI_GDP_1, 21 STI_HQVDP_0, 22 STI_GDP_2, 23 STI_GDP_3, 24 }; 25 26 const char *sti_plane_to_str(struct sti_plane *plane) 27 { 28 switch (plane->desc) { 29 case STI_GDP_0: 30 return "GDP0"; 31 case STI_GDP_1: 32 return "GDP1"; 33 case STI_GDP_2: 34 return "GDP2"; 35 case STI_GDP_3: 36 return "GDP3"; 37 case STI_HQVDP_0: 38 return "HQVDP0"; 39 case STI_CURSOR: 40 return "CURSOR"; 41 default: 42 return "<UNKNOWN PLANE>"; 43 } 44 } 45 EXPORT_SYMBOL(sti_plane_to_str); 46 47 static void sti_plane_destroy(struct drm_plane *drm_plane) 48 { 49 DRM_DEBUG_DRIVER("\n"); 50 51 drm_plane_helper_disable(drm_plane); 52 drm_plane_cleanup(drm_plane); 53 } 54 55 static int sti_plane_set_property(struct drm_plane *drm_plane, 56 struct drm_property *property, 57 uint64_t val) 58 { 59 struct drm_device *dev = drm_plane->dev; 60 struct sti_private *private = dev->dev_private; 61 struct sti_plane *plane = to_sti_plane(drm_plane); 62 63 DRM_DEBUG_DRIVER("\n"); 64 65 if (property == private->plane_zorder_property) { 66 plane->zorder = val; 67 return 0; 68 } 69 70 return -EINVAL; 71 } 72 73 static void sti_plane_attach_zorder_property(struct drm_plane *drm_plane) 74 { 75 struct drm_device *dev = drm_plane->dev; 76 struct sti_private *private = dev->dev_private; 77 struct sti_plane *plane = to_sti_plane(drm_plane); 78 struct drm_property *prop; 79 80 prop = private->plane_zorder_property; 81 if (!prop) { 82 prop = drm_property_create_range(dev, 0, "zpos", 1, 83 GAM_MIXER_NB_DEPTH_LEVEL); 84 if (!prop) 85 return; 86 87 private->plane_zorder_property = prop; 88 } 89 90 drm_object_attach_property(&drm_plane->base, prop, plane->zorder); 91 } 92 93 void sti_plane_init_property(struct sti_plane *plane, 94 enum drm_plane_type type) 95 { 96 unsigned int i; 97 98 for (i = 0; i < ARRAY_SIZE(sti_plane_default_zorder); i++) 99 if (sti_plane_default_zorder[i] == plane->desc) 100 break; 101 102 plane->zorder = i + 1; 103 104 if (type == DRM_PLANE_TYPE_OVERLAY) 105 sti_plane_attach_zorder_property(&plane->drm_plane); 106 107 DRM_DEBUG_DRIVER("drm plane:%d mapped to %s with zorder:%d\n", 108 plane->drm_plane.base.id, 109 sti_plane_to_str(plane), plane->zorder); 110 } 111 EXPORT_SYMBOL(sti_plane_init_property); 112 113 struct drm_plane_funcs sti_plane_helpers_funcs = { 114 .update_plane = drm_atomic_helper_update_plane, 115 .disable_plane = drm_atomic_helper_disable_plane, 116 .destroy = sti_plane_destroy, 117 .set_property = sti_plane_set_property, 118 .reset = drm_atomic_helper_plane_reset, 119 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, 120 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, 121 }; 122 EXPORT_SYMBOL(sti_plane_helpers_funcs); 123