Benjamin Gaignard | d219673 | 2014-07-30 19:28:27 +0200 | [diff] [blame] | 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_gem_cma_helper.h> |
| 11 | #include <drm/drm_fb_cma_helper.h> |
| 12 | |
| 13 | #include "sti_compositor.h" |
| 14 | #include "sti_gdp.h" |
| 15 | #include "sti_layer.h" |
| 16 | #include "sti_vid.h" |
| 17 | |
| 18 | const char *sti_layer_to_str(struct sti_layer *layer) |
| 19 | { |
| 20 | switch (layer->desc) { |
| 21 | case STI_GDP_0: |
| 22 | return "GDP0"; |
| 23 | case STI_GDP_1: |
| 24 | return "GDP1"; |
| 25 | case STI_GDP_2: |
| 26 | return "GDP2"; |
| 27 | case STI_GDP_3: |
| 28 | return "GDP3"; |
| 29 | case STI_VID_0: |
| 30 | return "VID0"; |
| 31 | case STI_VID_1: |
| 32 | return "VID1"; |
| 33 | case STI_CURSOR: |
| 34 | return "CURSOR"; |
| 35 | default: |
| 36 | return "<UNKNOWN LAYER>"; |
| 37 | } |
| 38 | } |
| 39 | |
| 40 | struct sti_layer *sti_layer_create(struct device *dev, int desc, |
| 41 | void __iomem *baseaddr) |
| 42 | { |
| 43 | |
| 44 | struct sti_layer *layer = NULL; |
| 45 | |
| 46 | switch (desc & STI_LAYER_TYPE_MASK) { |
| 47 | case STI_GDP: |
| 48 | layer = sti_gdp_create(dev, desc); |
| 49 | break; |
| 50 | case STI_VID: |
| 51 | layer = sti_vid_create(dev); |
| 52 | break; |
| 53 | } |
| 54 | |
| 55 | if (!layer) { |
| 56 | DRM_ERROR("Failed to create layer\n"); |
| 57 | return NULL; |
| 58 | } |
| 59 | |
| 60 | layer->desc = desc; |
| 61 | layer->dev = dev; |
| 62 | layer->regs = baseaddr; |
| 63 | |
| 64 | layer->ops->init(layer); |
| 65 | |
| 66 | DRM_DEBUG_DRIVER("%s created\n", sti_layer_to_str(layer)); |
| 67 | |
| 68 | return layer; |
| 69 | } |
| 70 | |
| 71 | int sti_layer_prepare(struct sti_layer *layer, struct drm_framebuffer *fb, |
| 72 | struct drm_display_mode *mode, int mixer_id, |
| 73 | int dest_x, int dest_y, int dest_w, int dest_h, |
| 74 | int src_x, int src_y, int src_w, int src_h) |
| 75 | { |
| 76 | int ret; |
| 77 | unsigned int i; |
| 78 | struct drm_gem_cma_object *cma_obj; |
| 79 | |
| 80 | if (!layer || !fb || !mode) { |
| 81 | DRM_ERROR("Null fb, layer or mode\n"); |
| 82 | return 1; |
| 83 | } |
| 84 | |
| 85 | cma_obj = drm_fb_cma_get_gem_obj(fb, 0); |
| 86 | if (!cma_obj) { |
| 87 | DRM_ERROR("Can't get CMA GEM object for fb\n"); |
| 88 | return 1; |
| 89 | } |
| 90 | |
| 91 | layer->fb = fb; |
| 92 | layer->mode = mode; |
| 93 | layer->mixer_id = mixer_id; |
| 94 | layer->dst_x = dest_x; |
| 95 | layer->dst_y = dest_y; |
| 96 | layer->dst_w = clamp_val(dest_w, 0, mode->crtc_hdisplay - dest_x); |
| 97 | layer->dst_h = clamp_val(dest_h, 0, mode->crtc_vdisplay - dest_y); |
| 98 | layer->src_x = src_x; |
| 99 | layer->src_y = src_y; |
| 100 | layer->src_w = src_w; |
| 101 | layer->src_h = src_h; |
| 102 | layer->format = fb->pixel_format; |
| 103 | layer->paddr = cma_obj->paddr; |
| 104 | for (i = 0; i < 4; i++) { |
| 105 | layer->pitches[i] = fb->pitches[i]; |
| 106 | layer->offsets[i] = fb->offsets[i]; |
| 107 | } |
| 108 | |
| 109 | DRM_DEBUG_DRIVER("%s is associated with mixer_id %d\n", |
| 110 | sti_layer_to_str(layer), |
| 111 | layer->mixer_id); |
| 112 | DRM_DEBUG_DRIVER("%s dst=(%dx%d)@(%d,%d) - src=(%dx%d)@(%d,%d)\n", |
| 113 | sti_layer_to_str(layer), |
| 114 | layer->dst_w, layer->dst_h, layer->dst_x, layer->dst_y, |
| 115 | layer->src_w, layer->src_h, layer->src_x, |
| 116 | layer->src_y); |
| 117 | |
| 118 | DRM_DEBUG_DRIVER("drm FB:%d format:%.4s phys@:0x%lx\n", fb->base.id, |
| 119 | (char *)&layer->format, (unsigned long)layer->paddr); |
| 120 | |
| 121 | if (!layer->ops->prepare) |
| 122 | goto err_no_prepare; |
| 123 | |
| 124 | ret = layer->ops->prepare(layer, !layer->enabled); |
| 125 | if (!ret) |
| 126 | layer->enabled = true; |
| 127 | |
| 128 | return ret; |
| 129 | |
| 130 | err_no_prepare: |
| 131 | DRM_ERROR("Cannot prepare\n"); |
| 132 | return 1; |
| 133 | } |
| 134 | |
| 135 | int sti_layer_commit(struct sti_layer *layer) |
| 136 | { |
| 137 | if (!layer) |
| 138 | return 1; |
| 139 | |
| 140 | if (!layer->ops->commit) |
| 141 | goto err_no_commit; |
| 142 | |
| 143 | return layer->ops->commit(layer); |
| 144 | |
| 145 | err_no_commit: |
| 146 | DRM_ERROR("Cannot commit\n"); |
| 147 | return 1; |
| 148 | } |
| 149 | |
| 150 | int sti_layer_disable(struct sti_layer *layer) |
| 151 | { |
| 152 | int ret; |
| 153 | |
| 154 | DRM_DEBUG_DRIVER("%s\n", sti_layer_to_str(layer)); |
| 155 | if (!layer) |
| 156 | return 1; |
| 157 | |
| 158 | if (!layer->enabled) |
| 159 | return 0; |
| 160 | |
| 161 | if (!layer->ops->disable) |
| 162 | goto err_no_disable; |
| 163 | |
| 164 | ret = layer->ops->disable(layer); |
| 165 | if (!ret) |
| 166 | layer->enabled = false; |
| 167 | else |
| 168 | DRM_ERROR("Disable failed\n"); |
| 169 | |
| 170 | return ret; |
| 171 | |
| 172 | err_no_disable: |
| 173 | DRM_ERROR("Cannot disable\n"); |
| 174 | return 1; |
| 175 | } |
| 176 | |
| 177 | const uint32_t *sti_layer_get_formats(struct sti_layer *layer) |
| 178 | { |
| 179 | if (!layer) |
| 180 | return NULL; |
| 181 | |
| 182 | if (!layer->ops->get_formats) |
| 183 | return NULL; |
| 184 | |
| 185 | return layer->ops->get_formats(layer); |
| 186 | } |
| 187 | |
| 188 | unsigned int sti_layer_get_nb_formats(struct sti_layer *layer) |
| 189 | { |
| 190 | if (!layer) |
| 191 | return 0; |
| 192 | |
| 193 | if (!layer->ops->get_nb_formats) |
| 194 | return 0; |
| 195 | |
| 196 | return layer->ops->get_nb_formats(layer); |
| 197 | } |