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 <linux/component.h> 10 #include <linux/module.h> 11 #include <linux/platform_device.h> 12 #include <linux/reset.h> 13 14 #include <drm/drmP.h> 15 16 #include "sti_compositor.h" 17 #include "sti_crtc.h" 18 #include "sti_cursor.h" 19 #include "sti_drv.h" 20 #include "sti_gdp.h" 21 #include "sti_plane.h" 22 #include "sti_vid.h" 23 #include "sti_vtg.h" 24 25 /* 26 * stiH407 compositor properties 27 */ 28 struct sti_compositor_data stih407_compositor_data = { 29 .nb_subdev = 8, 30 .subdev_desc = { 31 {STI_CURSOR_SUBDEV, (int)STI_CURSOR, 0x000}, 32 {STI_GPD_SUBDEV, (int)STI_GDP_0, 0x100}, 33 {STI_GPD_SUBDEV, (int)STI_GDP_1, 0x200}, 34 {STI_GPD_SUBDEV, (int)STI_GDP_2, 0x300}, 35 {STI_GPD_SUBDEV, (int)STI_GDP_3, 0x400}, 36 {STI_VID_SUBDEV, (int)STI_HQVDP_0, 0x700}, 37 {STI_MIXER_MAIN_SUBDEV, STI_MIXER_MAIN, 0xC00}, 38 {STI_MIXER_AUX_SUBDEV, STI_MIXER_AUX, 0xD00}, 39 }, 40 }; 41 42 /* 43 * stiH416 compositor properties 44 * Note: 45 * on stih416 MIXER_AUX has a different base address from MIXER_MAIN 46 * Moreover, GDPx is different for Main and Aux Mixer. So this subdev map does 47 * not fit for stiH416 if we want to enable the MIXER_AUX. 48 */ 49 struct sti_compositor_data stih416_compositor_data = { 50 .nb_subdev = 3, 51 .subdev_desc = { 52 {STI_GPD_SUBDEV, (int)STI_GDP_0, 0x100}, 53 {STI_GPD_SUBDEV, (int)STI_GDP_1, 0x200}, 54 {STI_MIXER_MAIN_SUBDEV, STI_MIXER_MAIN, 0xC00} 55 }, 56 }; 57 58 int sti_compositor_debufs_init(struct sti_compositor *compo, 59 struct drm_minor *minor) 60 { 61 int ret = 0, i; 62 63 for (i = 0; compo->vid[i]; i++) { 64 ret = vid_debugfs_init(compo->vid[i], minor); 65 if (ret) 66 return ret; 67 } 68 69 for (i = 0; compo->mixer[i]; i++) { 70 ret = sti_mixer_debugfs_init(compo->mixer[i], minor); 71 if (ret) 72 return ret; 73 } 74 75 return 0; 76 } 77 78 static int sti_compositor_bind(struct device *dev, 79 struct device *master, 80 void *data) 81 { 82 struct sti_compositor *compo = dev_get_drvdata(dev); 83 struct drm_device *drm_dev = data; 84 unsigned int i, mixer_id = 0, vid_id = 0, crtc_id = 0; 85 struct sti_private *dev_priv = drm_dev->dev_private; 86 struct drm_plane *cursor = NULL; 87 struct drm_plane *primary = NULL; 88 struct sti_compositor_subdev_descriptor *desc = compo->data.subdev_desc; 89 unsigned int array_size = compo->data.nb_subdev; 90 91 dev_priv->compo = compo; 92 93 /* Register mixer subdev and video subdev first */ 94 for (i = 0; i < array_size; i++) { 95 switch (desc[i].type) { 96 case STI_VID_SUBDEV: 97 compo->vid[vid_id++] = 98 sti_vid_create(compo->dev, drm_dev, desc[i].id, 99 compo->regs + desc[i].offset); 100 break; 101 case STI_MIXER_MAIN_SUBDEV: 102 case STI_MIXER_AUX_SUBDEV: 103 compo->mixer[mixer_id++] = 104 sti_mixer_create(compo->dev, drm_dev, desc[i].id, 105 compo->regs + desc[i].offset); 106 break; 107 case STI_GPD_SUBDEV: 108 case STI_CURSOR_SUBDEV: 109 /* Nothing to do, wait for the second round */ 110 break; 111 default: 112 DRM_ERROR("Unknow subdev compoment type\n"); 113 return 1; 114 } 115 } 116 117 /* Register the other subdevs, create crtc and planes */ 118 for (i = 0; i < array_size; i++) { 119 enum drm_plane_type plane_type = DRM_PLANE_TYPE_OVERLAY; 120 121 if (crtc_id < mixer_id) 122 plane_type = DRM_PLANE_TYPE_PRIMARY; 123 124 switch (desc[i].type) { 125 case STI_MIXER_MAIN_SUBDEV: 126 case STI_MIXER_AUX_SUBDEV: 127 case STI_VID_SUBDEV: 128 /* Nothing to do, already done at the first round */ 129 break; 130 case STI_CURSOR_SUBDEV: 131 cursor = sti_cursor_create(drm_dev, compo->dev, 132 desc[i].id, 133 compo->regs + desc[i].offset, 134 1); 135 if (!cursor) { 136 DRM_ERROR("Can't create CURSOR plane\n"); 137 break; 138 } 139 break; 140 case STI_GPD_SUBDEV: 141 primary = sti_gdp_create(drm_dev, compo->dev, 142 desc[i].id, 143 compo->regs + desc[i].offset, 144 (1 << mixer_id) - 1, 145 plane_type); 146 if (!primary) { 147 DRM_ERROR("Can't create GDP plane\n"); 148 break; 149 } 150 break; 151 default: 152 DRM_ERROR("Unknown subdev compoment type\n"); 153 return 1; 154 } 155 156 /* The first planes are reserved for primary planes*/ 157 if (crtc_id < mixer_id && primary) { 158 sti_crtc_init(drm_dev, compo->mixer[crtc_id], 159 primary, cursor); 160 crtc_id++; 161 cursor = NULL; 162 primary = NULL; 163 } 164 } 165 166 drm_vblank_init(drm_dev, crtc_id); 167 /* Allow usage of vblank without having to call drm_irq_install */ 168 drm_dev->irq_enabled = 1; 169 170 return 0; 171 } 172 173 static void sti_compositor_unbind(struct device *dev, struct device *master, 174 void *data) 175 { 176 /* do nothing */ 177 } 178 179 static const struct component_ops sti_compositor_ops = { 180 .bind = sti_compositor_bind, 181 .unbind = sti_compositor_unbind, 182 }; 183 184 static const struct of_device_id compositor_of_match[] = { 185 { 186 .compatible = "st,stih416-compositor", 187 .data = &stih416_compositor_data, 188 }, { 189 .compatible = "st,stih407-compositor", 190 .data = &stih407_compositor_data, 191 }, { 192 /* end node */ 193 } 194 }; 195 MODULE_DEVICE_TABLE(of, compositor_of_match); 196 197 static int sti_compositor_probe(struct platform_device *pdev) 198 { 199 struct device *dev = &pdev->dev; 200 struct device_node *np = dev->of_node; 201 struct device_node *vtg_np; 202 struct sti_compositor *compo; 203 struct resource *res; 204 205 compo = devm_kzalloc(dev, sizeof(*compo), GFP_KERNEL); 206 if (!compo) { 207 DRM_ERROR("Failed to allocate compositor context\n"); 208 return -ENOMEM; 209 } 210 compo->dev = dev; 211 compo->vtg_vblank_nb.notifier_call = sti_crtc_vblank_cb; 212 213 /* populate data structure depending on compatibility */ 214 BUG_ON(!of_match_node(compositor_of_match, np)->data); 215 216 memcpy(&compo->data, of_match_node(compositor_of_match, np)->data, 217 sizeof(struct sti_compositor_data)); 218 219 /* Get Memory ressources */ 220 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 221 if (res == NULL) { 222 DRM_ERROR("Get memory resource failed\n"); 223 return -ENXIO; 224 } 225 compo->regs = devm_ioremap(dev, res->start, resource_size(res)); 226 if (compo->regs == NULL) { 227 DRM_ERROR("Register mapping failed\n"); 228 return -ENXIO; 229 } 230 231 /* Get clock resources */ 232 compo->clk_compo_main = devm_clk_get(dev, "compo_main"); 233 if (IS_ERR(compo->clk_compo_main)) { 234 DRM_ERROR("Cannot get compo_main clock\n"); 235 return PTR_ERR(compo->clk_compo_main); 236 } 237 238 compo->clk_compo_aux = devm_clk_get(dev, "compo_aux"); 239 if (IS_ERR(compo->clk_compo_aux)) { 240 DRM_ERROR("Cannot get compo_aux clock\n"); 241 return PTR_ERR(compo->clk_compo_aux); 242 } 243 244 compo->clk_pix_main = devm_clk_get(dev, "pix_main"); 245 if (IS_ERR(compo->clk_pix_main)) { 246 DRM_ERROR("Cannot get pix_main clock\n"); 247 return PTR_ERR(compo->clk_pix_main); 248 } 249 250 compo->clk_pix_aux = devm_clk_get(dev, "pix_aux"); 251 if (IS_ERR(compo->clk_pix_aux)) { 252 DRM_ERROR("Cannot get pix_aux clock\n"); 253 return PTR_ERR(compo->clk_pix_aux); 254 } 255 256 /* Get reset resources */ 257 compo->rst_main = devm_reset_control_get_shared(dev, "compo-main"); 258 /* Take compo main out of reset */ 259 if (!IS_ERR(compo->rst_main)) 260 reset_control_deassert(compo->rst_main); 261 262 compo->rst_aux = devm_reset_control_get_shared(dev, "compo-aux"); 263 /* Take compo aux out of reset */ 264 if (!IS_ERR(compo->rst_aux)) 265 reset_control_deassert(compo->rst_aux); 266 267 vtg_np = of_parse_phandle(pdev->dev.of_node, "st,vtg", 0); 268 if (vtg_np) 269 compo->vtg_main = of_vtg_find(vtg_np); 270 of_node_put(vtg_np); 271 272 vtg_np = of_parse_phandle(pdev->dev.of_node, "st,vtg", 1); 273 if (vtg_np) 274 compo->vtg_aux = of_vtg_find(vtg_np); 275 of_node_put(vtg_np); 276 277 platform_set_drvdata(pdev, compo); 278 279 return component_add(&pdev->dev, &sti_compositor_ops); 280 } 281 282 static int sti_compositor_remove(struct platform_device *pdev) 283 { 284 component_del(&pdev->dev, &sti_compositor_ops); 285 return 0; 286 } 287 288 struct platform_driver sti_compositor_driver = { 289 .driver = { 290 .name = "sti-compositor", 291 .of_match_table = compositor_of_match, 292 }, 293 .probe = sti_compositor_probe, 294 .remove = sti_compositor_remove, 295 }; 296 297 MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>"); 298 MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver"); 299 MODULE_LICENSE("GPL"); 300