1 /* 2 * Copyright (C) 2013 Avionic Design GmbH 3 * Copyright (C) 2013 NVIDIA Corporation 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 */ 9 10 #include <linux/clk.h> 11 #include <linux/host1x.h> 12 #include <linux/module.h> 13 #include <linux/platform_device.h> 14 #include <linux/reset.h> 15 16 #include <soc/tegra/pmc.h> 17 18 #include "drm.h" 19 #include "gem.h" 20 #include "gr3d.h" 21 22 struct gr3d { 23 struct tegra_drm_client client; 24 struct host1x_channel *channel; 25 struct clk *clk_secondary; 26 struct clk *clk; 27 struct reset_control *rst_secondary; 28 struct reset_control *rst; 29 30 DECLARE_BITMAP(addr_regs, GR3D_NUM_REGS); 31 }; 32 33 static inline struct gr3d *to_gr3d(struct tegra_drm_client *client) 34 { 35 return container_of(client, struct gr3d, client); 36 } 37 38 static int gr3d_init(struct host1x_client *client) 39 { 40 struct tegra_drm_client *drm = host1x_to_drm_client(client); 41 struct drm_device *dev = dev_get_drvdata(client->parent); 42 unsigned long flags = HOST1X_SYNCPT_HAS_BASE; 43 struct gr3d *gr3d = to_gr3d(drm); 44 45 gr3d->channel = host1x_channel_request(client->dev); 46 if (!gr3d->channel) 47 return -ENOMEM; 48 49 client->syncpts[0] = host1x_syncpt_request(client->dev, flags); 50 if (!client->syncpts[0]) { 51 host1x_channel_put(gr3d->channel); 52 return -ENOMEM; 53 } 54 55 return tegra_drm_register_client(dev->dev_private, drm); 56 } 57 58 static int gr3d_exit(struct host1x_client *client) 59 { 60 struct tegra_drm_client *drm = host1x_to_drm_client(client); 61 struct drm_device *dev = dev_get_drvdata(client->parent); 62 struct gr3d *gr3d = to_gr3d(drm); 63 int err; 64 65 err = tegra_drm_unregister_client(dev->dev_private, drm); 66 if (err < 0) 67 return err; 68 69 host1x_syncpt_free(client->syncpts[0]); 70 host1x_channel_put(gr3d->channel); 71 72 return 0; 73 } 74 75 static const struct host1x_client_ops gr3d_client_ops = { 76 .init = gr3d_init, 77 .exit = gr3d_exit, 78 }; 79 80 static int gr3d_open_channel(struct tegra_drm_client *client, 81 struct tegra_drm_context *context) 82 { 83 struct gr3d *gr3d = to_gr3d(client); 84 85 context->channel = host1x_channel_get(gr3d->channel); 86 if (!context->channel) 87 return -ENOMEM; 88 89 return 0; 90 } 91 92 static void gr3d_close_channel(struct tegra_drm_context *context) 93 { 94 host1x_channel_put(context->channel); 95 } 96 97 static int gr3d_is_addr_reg(struct device *dev, u32 class, u32 offset) 98 { 99 struct gr3d *gr3d = dev_get_drvdata(dev); 100 101 switch (class) { 102 case HOST1X_CLASS_HOST1X: 103 if (offset == 0x2b) 104 return 1; 105 106 break; 107 108 case HOST1X_CLASS_GR3D: 109 if (offset >= GR3D_NUM_REGS) 110 break; 111 112 if (test_bit(offset, gr3d->addr_regs)) 113 return 1; 114 115 break; 116 } 117 118 return 0; 119 } 120 121 static const struct tegra_drm_client_ops gr3d_ops = { 122 .open_channel = gr3d_open_channel, 123 .close_channel = gr3d_close_channel, 124 .is_addr_reg = gr3d_is_addr_reg, 125 .submit = tegra_drm_submit, 126 }; 127 128 static const struct of_device_id tegra_gr3d_match[] = { 129 { .compatible = "nvidia,tegra114-gr3d" }, 130 { .compatible = "nvidia,tegra30-gr3d" }, 131 { .compatible = "nvidia,tegra20-gr3d" }, 132 { } 133 }; 134 MODULE_DEVICE_TABLE(of, tegra_gr3d_match); 135 136 static const u32 gr3d_addr_regs[] = { 137 GR3D_IDX_ATTRIBUTE( 0), 138 GR3D_IDX_ATTRIBUTE( 1), 139 GR3D_IDX_ATTRIBUTE( 2), 140 GR3D_IDX_ATTRIBUTE( 3), 141 GR3D_IDX_ATTRIBUTE( 4), 142 GR3D_IDX_ATTRIBUTE( 5), 143 GR3D_IDX_ATTRIBUTE( 6), 144 GR3D_IDX_ATTRIBUTE( 7), 145 GR3D_IDX_ATTRIBUTE( 8), 146 GR3D_IDX_ATTRIBUTE( 9), 147 GR3D_IDX_ATTRIBUTE(10), 148 GR3D_IDX_ATTRIBUTE(11), 149 GR3D_IDX_ATTRIBUTE(12), 150 GR3D_IDX_ATTRIBUTE(13), 151 GR3D_IDX_ATTRIBUTE(14), 152 GR3D_IDX_ATTRIBUTE(15), 153 GR3D_IDX_INDEX_BASE, 154 GR3D_QR_ZTAG_ADDR, 155 GR3D_QR_CTAG_ADDR, 156 GR3D_QR_CZ_ADDR, 157 GR3D_TEX_TEX_ADDR( 0), 158 GR3D_TEX_TEX_ADDR( 1), 159 GR3D_TEX_TEX_ADDR( 2), 160 GR3D_TEX_TEX_ADDR( 3), 161 GR3D_TEX_TEX_ADDR( 4), 162 GR3D_TEX_TEX_ADDR( 5), 163 GR3D_TEX_TEX_ADDR( 6), 164 GR3D_TEX_TEX_ADDR( 7), 165 GR3D_TEX_TEX_ADDR( 8), 166 GR3D_TEX_TEX_ADDR( 9), 167 GR3D_TEX_TEX_ADDR(10), 168 GR3D_TEX_TEX_ADDR(11), 169 GR3D_TEX_TEX_ADDR(12), 170 GR3D_TEX_TEX_ADDR(13), 171 GR3D_TEX_TEX_ADDR(14), 172 GR3D_TEX_TEX_ADDR(15), 173 GR3D_DW_MEMORY_OUTPUT_ADDRESS, 174 GR3D_GLOBAL_SURFADDR( 0), 175 GR3D_GLOBAL_SURFADDR( 1), 176 GR3D_GLOBAL_SURFADDR( 2), 177 GR3D_GLOBAL_SURFADDR( 3), 178 GR3D_GLOBAL_SURFADDR( 4), 179 GR3D_GLOBAL_SURFADDR( 5), 180 GR3D_GLOBAL_SURFADDR( 6), 181 GR3D_GLOBAL_SURFADDR( 7), 182 GR3D_GLOBAL_SURFADDR( 8), 183 GR3D_GLOBAL_SURFADDR( 9), 184 GR3D_GLOBAL_SURFADDR(10), 185 GR3D_GLOBAL_SURFADDR(11), 186 GR3D_GLOBAL_SURFADDR(12), 187 GR3D_GLOBAL_SURFADDR(13), 188 GR3D_GLOBAL_SURFADDR(14), 189 GR3D_GLOBAL_SURFADDR(15), 190 GR3D_GLOBAL_SPILLSURFADDR, 191 GR3D_GLOBAL_SURFOVERADDR( 0), 192 GR3D_GLOBAL_SURFOVERADDR( 1), 193 GR3D_GLOBAL_SURFOVERADDR( 2), 194 GR3D_GLOBAL_SURFOVERADDR( 3), 195 GR3D_GLOBAL_SURFOVERADDR( 4), 196 GR3D_GLOBAL_SURFOVERADDR( 5), 197 GR3D_GLOBAL_SURFOVERADDR( 6), 198 GR3D_GLOBAL_SURFOVERADDR( 7), 199 GR3D_GLOBAL_SURFOVERADDR( 8), 200 GR3D_GLOBAL_SURFOVERADDR( 9), 201 GR3D_GLOBAL_SURFOVERADDR(10), 202 GR3D_GLOBAL_SURFOVERADDR(11), 203 GR3D_GLOBAL_SURFOVERADDR(12), 204 GR3D_GLOBAL_SURFOVERADDR(13), 205 GR3D_GLOBAL_SURFOVERADDR(14), 206 GR3D_GLOBAL_SURFOVERADDR(15), 207 GR3D_GLOBAL_SAMP01SURFADDR( 0), 208 GR3D_GLOBAL_SAMP01SURFADDR( 1), 209 GR3D_GLOBAL_SAMP01SURFADDR( 2), 210 GR3D_GLOBAL_SAMP01SURFADDR( 3), 211 GR3D_GLOBAL_SAMP01SURFADDR( 4), 212 GR3D_GLOBAL_SAMP01SURFADDR( 5), 213 GR3D_GLOBAL_SAMP01SURFADDR( 6), 214 GR3D_GLOBAL_SAMP01SURFADDR( 7), 215 GR3D_GLOBAL_SAMP01SURFADDR( 8), 216 GR3D_GLOBAL_SAMP01SURFADDR( 9), 217 GR3D_GLOBAL_SAMP01SURFADDR(10), 218 GR3D_GLOBAL_SAMP01SURFADDR(11), 219 GR3D_GLOBAL_SAMP01SURFADDR(12), 220 GR3D_GLOBAL_SAMP01SURFADDR(13), 221 GR3D_GLOBAL_SAMP01SURFADDR(14), 222 GR3D_GLOBAL_SAMP01SURFADDR(15), 223 GR3D_GLOBAL_SAMP23SURFADDR( 0), 224 GR3D_GLOBAL_SAMP23SURFADDR( 1), 225 GR3D_GLOBAL_SAMP23SURFADDR( 2), 226 GR3D_GLOBAL_SAMP23SURFADDR( 3), 227 GR3D_GLOBAL_SAMP23SURFADDR( 4), 228 GR3D_GLOBAL_SAMP23SURFADDR( 5), 229 GR3D_GLOBAL_SAMP23SURFADDR( 6), 230 GR3D_GLOBAL_SAMP23SURFADDR( 7), 231 GR3D_GLOBAL_SAMP23SURFADDR( 8), 232 GR3D_GLOBAL_SAMP23SURFADDR( 9), 233 GR3D_GLOBAL_SAMP23SURFADDR(10), 234 GR3D_GLOBAL_SAMP23SURFADDR(11), 235 GR3D_GLOBAL_SAMP23SURFADDR(12), 236 GR3D_GLOBAL_SAMP23SURFADDR(13), 237 GR3D_GLOBAL_SAMP23SURFADDR(14), 238 GR3D_GLOBAL_SAMP23SURFADDR(15), 239 }; 240 241 static int gr3d_probe(struct platform_device *pdev) 242 { 243 struct device_node *np = pdev->dev.of_node; 244 struct host1x_syncpt **syncpts; 245 struct gr3d *gr3d; 246 unsigned int i; 247 int err; 248 249 gr3d = devm_kzalloc(&pdev->dev, sizeof(*gr3d), GFP_KERNEL); 250 if (!gr3d) 251 return -ENOMEM; 252 253 syncpts = devm_kzalloc(&pdev->dev, sizeof(*syncpts), GFP_KERNEL); 254 if (!syncpts) 255 return -ENOMEM; 256 257 gr3d->clk = devm_clk_get(&pdev->dev, NULL); 258 if (IS_ERR(gr3d->clk)) { 259 dev_err(&pdev->dev, "cannot get clock\n"); 260 return PTR_ERR(gr3d->clk); 261 } 262 263 gr3d->rst = devm_reset_control_get(&pdev->dev, "3d"); 264 if (IS_ERR(gr3d->rst)) { 265 dev_err(&pdev->dev, "cannot get reset\n"); 266 return PTR_ERR(gr3d->rst); 267 } 268 269 if (of_device_is_compatible(np, "nvidia,tegra30-gr3d")) { 270 gr3d->clk_secondary = devm_clk_get(&pdev->dev, "3d2"); 271 if (IS_ERR(gr3d->clk_secondary)) { 272 dev_err(&pdev->dev, "cannot get secondary clock\n"); 273 return PTR_ERR(gr3d->clk_secondary); 274 } 275 276 gr3d->rst_secondary = devm_reset_control_get(&pdev->dev, 277 "3d2"); 278 if (IS_ERR(gr3d->rst_secondary)) { 279 dev_err(&pdev->dev, "cannot get secondary reset\n"); 280 return PTR_ERR(gr3d->rst_secondary); 281 } 282 } 283 284 err = tegra_powergate_sequence_power_up(TEGRA_POWERGATE_3D, gr3d->clk, 285 gr3d->rst); 286 if (err < 0) { 287 dev_err(&pdev->dev, "failed to power up 3D unit\n"); 288 return err; 289 } 290 291 if (gr3d->clk_secondary) { 292 err = tegra_powergate_sequence_power_up(TEGRA_POWERGATE_3D1, 293 gr3d->clk_secondary, 294 gr3d->rst_secondary); 295 if (err < 0) { 296 dev_err(&pdev->dev, 297 "failed to power up secondary 3D unit\n"); 298 return err; 299 } 300 } 301 302 INIT_LIST_HEAD(&gr3d->client.base.list); 303 gr3d->client.base.ops = &gr3d_client_ops; 304 gr3d->client.base.dev = &pdev->dev; 305 gr3d->client.base.class = HOST1X_CLASS_GR3D; 306 gr3d->client.base.syncpts = syncpts; 307 gr3d->client.base.num_syncpts = 1; 308 309 INIT_LIST_HEAD(&gr3d->client.list); 310 gr3d->client.ops = &gr3d_ops; 311 312 err = host1x_client_register(&gr3d->client.base); 313 if (err < 0) { 314 dev_err(&pdev->dev, "failed to register host1x client: %d\n", 315 err); 316 return err; 317 } 318 319 /* initialize address register map */ 320 for (i = 0; i < ARRAY_SIZE(gr3d_addr_regs); i++) 321 set_bit(gr3d_addr_regs[i], gr3d->addr_regs); 322 323 platform_set_drvdata(pdev, gr3d); 324 325 return 0; 326 } 327 328 static int gr3d_remove(struct platform_device *pdev) 329 { 330 struct gr3d *gr3d = platform_get_drvdata(pdev); 331 int err; 332 333 err = host1x_client_unregister(&gr3d->client.base); 334 if (err < 0) { 335 dev_err(&pdev->dev, "failed to unregister host1x client: %d\n", 336 err); 337 return err; 338 } 339 340 if (gr3d->clk_secondary) { 341 tegra_powergate_power_off(TEGRA_POWERGATE_3D1); 342 clk_disable_unprepare(gr3d->clk_secondary); 343 } 344 345 tegra_powergate_power_off(TEGRA_POWERGATE_3D); 346 clk_disable_unprepare(gr3d->clk); 347 348 return 0; 349 } 350 351 struct platform_driver tegra_gr3d_driver = { 352 .driver = { 353 .name = "tegra-gr3d", 354 .of_match_table = tegra_gr3d_match, 355 }, 356 .probe = gr3d_probe, 357 .remove = gr3d_remove, 358 }; 359