Rob Clark | 16ea975 | 2013-01-08 15:04:28 -0600 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 Texas Instruments |
| 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 | |
| 18 | /* LCDC DRM driver, based on da8xx-fb */ |
| 19 | |
| 20 | #include "tilcdc_drv.h" |
| 21 | #include "tilcdc_regs.h" |
| 22 | #include "tilcdc_tfp410.h" |
Rob Clark | 6e8de0b | 2013-01-22 16:02:21 -0600 | [diff] [blame] | 23 | #include "tilcdc_slave.h" |
Rob Clark | 0d4bbaf | 2012-12-18 17:34:16 -0600 | [diff] [blame] | 24 | #include "tilcdc_panel.h" |
Rob Clark | 16ea975 | 2013-01-08 15:04:28 -0600 | [diff] [blame] | 25 | |
| 26 | #include "drm_fb_helper.h" |
| 27 | |
| 28 | static LIST_HEAD(module_list); |
Darren Etheridge | 39de619 | 2013-06-21 13:52:27 -0500 | [diff] [blame] | 29 | static bool slave_probing; |
Rob Clark | 16ea975 | 2013-01-08 15:04:28 -0600 | [diff] [blame] | 30 | |
| 31 | void tilcdc_module_init(struct tilcdc_module *mod, const char *name, |
| 32 | const struct tilcdc_module_ops *funcs) |
| 33 | { |
| 34 | mod->name = name; |
| 35 | mod->funcs = funcs; |
| 36 | INIT_LIST_HEAD(&mod->list); |
| 37 | list_add(&mod->list, &module_list); |
| 38 | } |
| 39 | |
| 40 | void tilcdc_module_cleanup(struct tilcdc_module *mod) |
| 41 | { |
| 42 | list_del(&mod->list); |
| 43 | } |
| 44 | |
Darren Etheridge | 39de619 | 2013-06-21 13:52:27 -0500 | [diff] [blame] | 45 | void tilcdc_slave_probedefer(bool defered) |
| 46 | { |
| 47 | slave_probing = defered; |
| 48 | } |
| 49 | |
Rob Clark | 16ea975 | 2013-01-08 15:04:28 -0600 | [diff] [blame] | 50 | static struct of_device_id tilcdc_of_match[]; |
| 51 | |
| 52 | static struct drm_framebuffer *tilcdc_fb_create(struct drm_device *dev, |
| 53 | struct drm_file *file_priv, struct drm_mode_fb_cmd2 *mode_cmd) |
| 54 | { |
| 55 | return drm_fb_cma_create(dev, file_priv, mode_cmd); |
| 56 | } |
| 57 | |
| 58 | static void tilcdc_fb_output_poll_changed(struct drm_device *dev) |
| 59 | { |
| 60 | struct tilcdc_drm_private *priv = dev->dev_private; |
| 61 | if (priv->fbdev) |
| 62 | drm_fbdev_cma_hotplug_event(priv->fbdev); |
| 63 | } |
| 64 | |
| 65 | static const struct drm_mode_config_funcs mode_config_funcs = { |
| 66 | .fb_create = tilcdc_fb_create, |
| 67 | .output_poll_changed = tilcdc_fb_output_poll_changed, |
| 68 | }; |
| 69 | |
| 70 | static int modeset_init(struct drm_device *dev) |
| 71 | { |
| 72 | struct tilcdc_drm_private *priv = dev->dev_private; |
| 73 | struct tilcdc_module *mod; |
| 74 | |
| 75 | drm_mode_config_init(dev); |
| 76 | |
| 77 | priv->crtc = tilcdc_crtc_create(dev); |
| 78 | |
| 79 | list_for_each_entry(mod, &module_list, list) { |
| 80 | DBG("loading module: %s", mod->name); |
| 81 | mod->funcs->modeset_init(mod, dev); |
| 82 | } |
| 83 | |
Sachin Kamat | 9e48854 | 2013-03-02 15:53:06 +0530 | [diff] [blame] | 84 | if ((priv->num_encoders == 0) || (priv->num_connectors == 0)) { |
Rob Clark | 16ea975 | 2013-01-08 15:04:28 -0600 | [diff] [blame] | 85 | /* oh nos! */ |
| 86 | dev_err(dev->dev, "no encoders/connectors found\n"); |
| 87 | return -ENXIO; |
| 88 | } |
| 89 | |
| 90 | dev->mode_config.min_width = 0; |
| 91 | dev->mode_config.min_height = 0; |
| 92 | dev->mode_config.max_width = tilcdc_crtc_max_width(priv->crtc); |
| 93 | dev->mode_config.max_height = 2048; |
| 94 | dev->mode_config.funcs = &mode_config_funcs; |
| 95 | |
| 96 | return 0; |
| 97 | } |
| 98 | |
| 99 | #ifdef CONFIG_CPU_FREQ |
| 100 | static int cpufreq_transition(struct notifier_block *nb, |
| 101 | unsigned long val, void *data) |
| 102 | { |
| 103 | struct tilcdc_drm_private *priv = container_of(nb, |
| 104 | struct tilcdc_drm_private, freq_transition); |
| 105 | if (val == CPUFREQ_POSTCHANGE) { |
| 106 | if (priv->lcd_fck_rate != clk_get_rate(priv->clk)) { |
| 107 | priv->lcd_fck_rate = clk_get_rate(priv->clk); |
| 108 | tilcdc_crtc_update_clk(priv->crtc); |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | return 0; |
| 113 | } |
| 114 | #endif |
| 115 | |
| 116 | /* |
| 117 | * DRM operations: |
| 118 | */ |
| 119 | |
| 120 | static int tilcdc_unload(struct drm_device *dev) |
| 121 | { |
| 122 | struct tilcdc_drm_private *priv = dev->dev_private; |
| 123 | struct tilcdc_module *mod, *cur; |
| 124 | |
| 125 | drm_kms_helper_poll_fini(dev); |
| 126 | drm_mode_config_cleanup(dev); |
| 127 | drm_vblank_cleanup(dev); |
| 128 | |
| 129 | pm_runtime_get_sync(dev->dev); |
| 130 | drm_irq_uninstall(dev); |
| 131 | pm_runtime_put_sync(dev->dev); |
| 132 | |
| 133 | #ifdef CONFIG_CPU_FREQ |
| 134 | cpufreq_unregister_notifier(&priv->freq_transition, |
| 135 | CPUFREQ_TRANSITION_NOTIFIER); |
| 136 | #endif |
| 137 | |
| 138 | if (priv->clk) |
| 139 | clk_put(priv->clk); |
| 140 | |
| 141 | if (priv->mmio) |
| 142 | iounmap(priv->mmio); |
| 143 | |
| 144 | flush_workqueue(priv->wq); |
| 145 | destroy_workqueue(priv->wq); |
| 146 | |
| 147 | dev->dev_private = NULL; |
| 148 | |
| 149 | pm_runtime_disable(dev->dev); |
| 150 | |
| 151 | list_for_each_entry_safe(mod, cur, &module_list, list) { |
| 152 | DBG("destroying module: %s", mod->name); |
| 153 | mod->funcs->destroy(mod); |
| 154 | } |
| 155 | |
| 156 | kfree(priv); |
| 157 | |
| 158 | return 0; |
| 159 | } |
| 160 | |
| 161 | static int tilcdc_load(struct drm_device *dev, unsigned long flags) |
| 162 | { |
| 163 | struct platform_device *pdev = dev->platformdev; |
| 164 | struct device_node *node = pdev->dev.of_node; |
| 165 | struct tilcdc_drm_private *priv; |
Benoit Parrot | dc28aa0 | 2013-06-18 17:18:31 -0500 | [diff] [blame] | 166 | struct tilcdc_module *mod; |
Rob Clark | 16ea975 | 2013-01-08 15:04:28 -0600 | [diff] [blame] | 167 | struct resource *res; |
Benoit Parrot | dc28aa0 | 2013-06-18 17:18:31 -0500 | [diff] [blame] | 168 | u32 bpp = 0; |
Rob Clark | 16ea975 | 2013-01-08 15:04:28 -0600 | [diff] [blame] | 169 | int ret; |
| 170 | |
| 171 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); |
| 172 | if (!priv) { |
| 173 | dev_err(dev->dev, "failed to allocate private data\n"); |
| 174 | return -ENOMEM; |
| 175 | } |
| 176 | |
| 177 | dev->dev_private = priv; |
| 178 | |
| 179 | priv->wq = alloc_ordered_workqueue("tilcdc", 0); |
| 180 | |
| 181 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 182 | if (!res) { |
| 183 | dev_err(dev->dev, "failed to get memory resource\n"); |
| 184 | ret = -EINVAL; |
| 185 | goto fail; |
| 186 | } |
| 187 | |
| 188 | priv->mmio = ioremap_nocache(res->start, resource_size(res)); |
| 189 | if (!priv->mmio) { |
| 190 | dev_err(dev->dev, "failed to ioremap\n"); |
| 191 | ret = -ENOMEM; |
| 192 | goto fail; |
| 193 | } |
| 194 | |
| 195 | priv->clk = clk_get(dev->dev, "fck"); |
| 196 | if (IS_ERR(priv->clk)) { |
| 197 | dev_err(dev->dev, "failed to get functional clock\n"); |
| 198 | ret = -ENODEV; |
| 199 | goto fail; |
| 200 | } |
| 201 | |
| 202 | priv->disp_clk = clk_get(dev->dev, "dpll_disp_ck"); |
| 203 | if (IS_ERR(priv->clk)) { |
| 204 | dev_err(dev->dev, "failed to get display clock\n"); |
| 205 | ret = -ENODEV; |
| 206 | goto fail; |
| 207 | } |
| 208 | |
| 209 | #ifdef CONFIG_CPU_FREQ |
| 210 | priv->lcd_fck_rate = clk_get_rate(priv->clk); |
| 211 | priv->freq_transition.notifier_call = cpufreq_transition; |
| 212 | ret = cpufreq_register_notifier(&priv->freq_transition, |
| 213 | CPUFREQ_TRANSITION_NOTIFIER); |
| 214 | if (ret) { |
| 215 | dev_err(dev->dev, "failed to register cpufreq notifier\n"); |
| 216 | goto fail; |
| 217 | } |
| 218 | #endif |
| 219 | |
| 220 | if (of_property_read_u32(node, "max-bandwidth", &priv->max_bandwidth)) |
Darren Etheridge | 4e56434 | 2013-06-21 13:52:23 -0500 | [diff] [blame] | 221 | priv->max_bandwidth = TILCDC_DEFAULT_MAX_BANDWIDTH; |
| 222 | |
| 223 | DBG("Maximum Bandwidth Value %d", priv->max_bandwidth); |
| 224 | |
| 225 | if (of_property_read_u32(node, "ti,max-width", &priv->max_width)) |
| 226 | priv->max_width = TILCDC_DEFAULT_MAX_WIDTH; |
| 227 | |
| 228 | DBG("Maximum Horizontal Pixel Width Value %dpixels", priv->max_width); |
| 229 | |
| 230 | if (of_property_read_u32(node, "ti,max-pixelclock", |
| 231 | &priv->max_pixelclock)) |
| 232 | priv->max_pixelclock = TILCDC_DEFAULT_MAX_PIXELCLOCK; |
| 233 | |
| 234 | DBG("Maximum Pixel Clock Value %dKHz", priv->max_pixelclock); |
Rob Clark | 16ea975 | 2013-01-08 15:04:28 -0600 | [diff] [blame] | 235 | |
| 236 | pm_runtime_enable(dev->dev); |
| 237 | |
| 238 | /* Determine LCD IP Version */ |
| 239 | pm_runtime_get_sync(dev->dev); |
| 240 | switch (tilcdc_read(dev, LCDC_PID_REG)) { |
| 241 | case 0x4c100102: |
| 242 | priv->rev = 1; |
| 243 | break; |
| 244 | case 0x4f200800: |
| 245 | case 0x4f201000: |
| 246 | priv->rev = 2; |
| 247 | break; |
| 248 | default: |
| 249 | dev_warn(dev->dev, "Unknown PID Reg value 0x%08x, " |
| 250 | "defaulting to LCD revision 1\n", |
| 251 | tilcdc_read(dev, LCDC_PID_REG)); |
| 252 | priv->rev = 1; |
| 253 | break; |
| 254 | } |
| 255 | |
| 256 | pm_runtime_put_sync(dev->dev); |
| 257 | |
| 258 | ret = modeset_init(dev); |
| 259 | if (ret < 0) { |
| 260 | dev_err(dev->dev, "failed to initialize mode setting\n"); |
| 261 | goto fail; |
| 262 | } |
| 263 | |
| 264 | ret = drm_vblank_init(dev, 1); |
| 265 | if (ret < 0) { |
| 266 | dev_err(dev->dev, "failed to initialize vblank\n"); |
| 267 | goto fail; |
| 268 | } |
| 269 | |
| 270 | pm_runtime_get_sync(dev->dev); |
| 271 | ret = drm_irq_install(dev); |
| 272 | pm_runtime_put_sync(dev->dev); |
| 273 | if (ret < 0) { |
| 274 | dev_err(dev->dev, "failed to install IRQ handler\n"); |
| 275 | goto fail; |
| 276 | } |
| 277 | |
| 278 | platform_set_drvdata(pdev, dev); |
| 279 | |
Benoit Parrot | dc28aa0 | 2013-06-18 17:18:31 -0500 | [diff] [blame] | 280 | |
| 281 | list_for_each_entry(mod, &module_list, list) { |
| 282 | DBG("%s: preferred_bpp: %d", mod->name, mod->preferred_bpp); |
| 283 | bpp = mod->preferred_bpp; |
| 284 | if (bpp > 0) |
| 285 | break; |
| 286 | } |
| 287 | |
| 288 | priv->fbdev = drm_fbdev_cma_init(dev, bpp, |
Rob Clark | 16ea975 | 2013-01-08 15:04:28 -0600 | [diff] [blame] | 289 | dev->mode_config.num_crtc, |
| 290 | dev->mode_config.num_connector); |
| 291 | |
| 292 | drm_kms_helper_poll_init(dev); |
| 293 | |
| 294 | return 0; |
| 295 | |
| 296 | fail: |
| 297 | tilcdc_unload(dev); |
| 298 | return ret; |
| 299 | } |
| 300 | |
| 301 | static void tilcdc_preclose(struct drm_device *dev, struct drm_file *file) |
| 302 | { |
| 303 | struct tilcdc_drm_private *priv = dev->dev_private; |
| 304 | |
| 305 | tilcdc_crtc_cancel_page_flip(priv->crtc, file); |
| 306 | } |
| 307 | |
| 308 | static void tilcdc_lastclose(struct drm_device *dev) |
| 309 | { |
| 310 | struct tilcdc_drm_private *priv = dev->dev_private; |
| 311 | drm_fbdev_cma_restore_mode(priv->fbdev); |
| 312 | } |
| 313 | |
Daniel Vetter | e9f0d76 | 2013-12-11 11:34:42 +0100 | [diff] [blame] | 314 | static irqreturn_t tilcdc_irq(int irq, void *arg) |
Rob Clark | 16ea975 | 2013-01-08 15:04:28 -0600 | [diff] [blame] | 315 | { |
| 316 | struct drm_device *dev = arg; |
| 317 | struct tilcdc_drm_private *priv = dev->dev_private; |
| 318 | return tilcdc_crtc_irq(priv->crtc); |
| 319 | } |
| 320 | |
| 321 | static void tilcdc_irq_preinstall(struct drm_device *dev) |
| 322 | { |
| 323 | tilcdc_clear_irqstatus(dev, 0xffffffff); |
| 324 | } |
| 325 | |
| 326 | static int tilcdc_irq_postinstall(struct drm_device *dev) |
| 327 | { |
| 328 | struct tilcdc_drm_private *priv = dev->dev_private; |
| 329 | |
| 330 | /* enable FIFO underflow irq: */ |
Sachin Kamat | a50b24f | 2013-03-02 15:53:07 +0530 | [diff] [blame] | 331 | if (priv->rev == 1) |
Rob Clark | 16ea975 | 2013-01-08 15:04:28 -0600 | [diff] [blame] | 332 | tilcdc_set(dev, LCDC_RASTER_CTRL_REG, LCDC_V1_UNDERFLOW_INT_ENA); |
Sachin Kamat | a50b24f | 2013-03-02 15:53:07 +0530 | [diff] [blame] | 333 | else |
Rob Clark | 16ea975 | 2013-01-08 15:04:28 -0600 | [diff] [blame] | 334 | tilcdc_set(dev, LCDC_INT_ENABLE_SET_REG, LCDC_V2_UNDERFLOW_INT_ENA); |
Rob Clark | 16ea975 | 2013-01-08 15:04:28 -0600 | [diff] [blame] | 335 | |
| 336 | return 0; |
| 337 | } |
| 338 | |
| 339 | static void tilcdc_irq_uninstall(struct drm_device *dev) |
| 340 | { |
| 341 | struct tilcdc_drm_private *priv = dev->dev_private; |
| 342 | |
| 343 | /* disable irqs that we might have enabled: */ |
| 344 | if (priv->rev == 1) { |
| 345 | tilcdc_clear(dev, LCDC_RASTER_CTRL_REG, |
| 346 | LCDC_V1_UNDERFLOW_INT_ENA | LCDC_V1_PL_INT_ENA); |
| 347 | tilcdc_clear(dev, LCDC_DMA_CTRL_REG, LCDC_V1_END_OF_FRAME_INT_ENA); |
| 348 | } else { |
| 349 | tilcdc_clear(dev, LCDC_INT_ENABLE_SET_REG, |
| 350 | LCDC_V2_UNDERFLOW_INT_ENA | LCDC_V2_PL_INT_ENA | |
| 351 | LCDC_V2_END_OF_FRAME0_INT_ENA | LCDC_V2_END_OF_FRAME1_INT_ENA | |
| 352 | LCDC_FRAME_DONE); |
| 353 | } |
| 354 | |
| 355 | } |
| 356 | |
| 357 | static void enable_vblank(struct drm_device *dev, bool enable) |
| 358 | { |
| 359 | struct tilcdc_drm_private *priv = dev->dev_private; |
| 360 | u32 reg, mask; |
| 361 | |
| 362 | if (priv->rev == 1) { |
| 363 | reg = LCDC_DMA_CTRL_REG; |
| 364 | mask = LCDC_V1_END_OF_FRAME_INT_ENA; |
| 365 | } else { |
| 366 | reg = LCDC_INT_ENABLE_SET_REG; |
| 367 | mask = LCDC_V2_END_OF_FRAME0_INT_ENA | |
| 368 | LCDC_V2_END_OF_FRAME1_INT_ENA | LCDC_FRAME_DONE; |
| 369 | } |
| 370 | |
| 371 | if (enable) |
| 372 | tilcdc_set(dev, reg, mask); |
| 373 | else |
| 374 | tilcdc_clear(dev, reg, mask); |
| 375 | } |
| 376 | |
| 377 | static int tilcdc_enable_vblank(struct drm_device *dev, int crtc) |
| 378 | { |
| 379 | enable_vblank(dev, true); |
| 380 | return 0; |
| 381 | } |
| 382 | |
| 383 | static void tilcdc_disable_vblank(struct drm_device *dev, int crtc) |
| 384 | { |
| 385 | enable_vblank(dev, false); |
| 386 | } |
| 387 | |
| 388 | #if defined(CONFIG_DEBUG_FS) || defined(CONFIG_PM_SLEEP) |
| 389 | static const struct { |
| 390 | const char *name; |
| 391 | uint8_t rev; |
| 392 | uint8_t save; |
| 393 | uint32_t reg; |
Sachin Kamat | 3250145 | 2013-03-02 15:53:08 +0530 | [diff] [blame] | 394 | } registers[] = { |
Rob Clark | 16ea975 | 2013-01-08 15:04:28 -0600 | [diff] [blame] | 395 | #define REG(rev, save, reg) { #reg, rev, save, reg } |
| 396 | /* exists in revision 1: */ |
| 397 | REG(1, false, LCDC_PID_REG), |
| 398 | REG(1, true, LCDC_CTRL_REG), |
| 399 | REG(1, false, LCDC_STAT_REG), |
| 400 | REG(1, true, LCDC_RASTER_CTRL_REG), |
| 401 | REG(1, true, LCDC_RASTER_TIMING_0_REG), |
| 402 | REG(1, true, LCDC_RASTER_TIMING_1_REG), |
| 403 | REG(1, true, LCDC_RASTER_TIMING_2_REG), |
| 404 | REG(1, true, LCDC_DMA_CTRL_REG), |
| 405 | REG(1, true, LCDC_DMA_FB_BASE_ADDR_0_REG), |
| 406 | REG(1, true, LCDC_DMA_FB_CEILING_ADDR_0_REG), |
| 407 | REG(1, true, LCDC_DMA_FB_BASE_ADDR_1_REG), |
| 408 | REG(1, true, LCDC_DMA_FB_CEILING_ADDR_1_REG), |
| 409 | /* new in revision 2: */ |
| 410 | REG(2, false, LCDC_RAW_STAT_REG), |
| 411 | REG(2, false, LCDC_MASKED_STAT_REG), |
| 412 | REG(2, false, LCDC_INT_ENABLE_SET_REG), |
| 413 | REG(2, false, LCDC_INT_ENABLE_CLR_REG), |
| 414 | REG(2, false, LCDC_END_OF_INT_IND_REG), |
| 415 | REG(2, true, LCDC_CLK_ENABLE_REG), |
| 416 | REG(2, true, LCDC_INT_ENABLE_SET_REG), |
| 417 | #undef REG |
| 418 | }; |
| 419 | #endif |
| 420 | |
| 421 | #ifdef CONFIG_DEBUG_FS |
| 422 | static int tilcdc_regs_show(struct seq_file *m, void *arg) |
| 423 | { |
| 424 | struct drm_info_node *node = (struct drm_info_node *) m->private; |
| 425 | struct drm_device *dev = node->minor->dev; |
| 426 | struct tilcdc_drm_private *priv = dev->dev_private; |
| 427 | unsigned i; |
| 428 | |
| 429 | pm_runtime_get_sync(dev->dev); |
| 430 | |
| 431 | seq_printf(m, "revision: %d\n", priv->rev); |
| 432 | |
| 433 | for (i = 0; i < ARRAY_SIZE(registers); i++) |
| 434 | if (priv->rev >= registers[i].rev) |
| 435 | seq_printf(m, "%s:\t %08x\n", registers[i].name, |
| 436 | tilcdc_read(dev, registers[i].reg)); |
| 437 | |
| 438 | pm_runtime_put_sync(dev->dev); |
| 439 | |
| 440 | return 0; |
| 441 | } |
| 442 | |
| 443 | static int tilcdc_mm_show(struct seq_file *m, void *arg) |
| 444 | { |
| 445 | struct drm_info_node *node = (struct drm_info_node *) m->private; |
| 446 | struct drm_device *dev = node->minor->dev; |
Daniel Vetter | b04a590 | 2013-12-11 14:24:46 +0100 | [diff] [blame] | 447 | return drm_mm_dump_table(m, &dev->vma_offset_manager->vm_addr_space_mm); |
Rob Clark | 16ea975 | 2013-01-08 15:04:28 -0600 | [diff] [blame] | 448 | } |
| 449 | |
| 450 | static struct drm_info_list tilcdc_debugfs_list[] = { |
| 451 | { "regs", tilcdc_regs_show, 0 }, |
| 452 | { "mm", tilcdc_mm_show, 0 }, |
| 453 | { "fb", drm_fb_cma_debugfs_show, 0 }, |
| 454 | }; |
| 455 | |
| 456 | static int tilcdc_debugfs_init(struct drm_minor *minor) |
| 457 | { |
| 458 | struct drm_device *dev = minor->dev; |
| 459 | struct tilcdc_module *mod; |
| 460 | int ret; |
| 461 | |
| 462 | ret = drm_debugfs_create_files(tilcdc_debugfs_list, |
| 463 | ARRAY_SIZE(tilcdc_debugfs_list), |
| 464 | minor->debugfs_root, minor); |
| 465 | |
| 466 | list_for_each_entry(mod, &module_list, list) |
| 467 | if (mod->funcs->debugfs_init) |
| 468 | mod->funcs->debugfs_init(mod, minor); |
| 469 | |
| 470 | if (ret) { |
| 471 | dev_err(dev->dev, "could not install tilcdc_debugfs_list\n"); |
| 472 | return ret; |
| 473 | } |
| 474 | |
| 475 | return ret; |
| 476 | } |
| 477 | |
| 478 | static void tilcdc_debugfs_cleanup(struct drm_minor *minor) |
| 479 | { |
| 480 | struct tilcdc_module *mod; |
| 481 | drm_debugfs_remove_files(tilcdc_debugfs_list, |
| 482 | ARRAY_SIZE(tilcdc_debugfs_list), minor); |
| 483 | |
| 484 | list_for_each_entry(mod, &module_list, list) |
| 485 | if (mod->funcs->debugfs_cleanup) |
| 486 | mod->funcs->debugfs_cleanup(mod, minor); |
| 487 | } |
| 488 | #endif |
| 489 | |
| 490 | static const struct file_operations fops = { |
| 491 | .owner = THIS_MODULE, |
| 492 | .open = drm_open, |
| 493 | .release = drm_release, |
| 494 | .unlocked_ioctl = drm_ioctl, |
| 495 | #ifdef CONFIG_COMPAT |
| 496 | .compat_ioctl = drm_compat_ioctl, |
| 497 | #endif |
| 498 | .poll = drm_poll, |
| 499 | .read = drm_read, |
Rob Clark | 16ea975 | 2013-01-08 15:04:28 -0600 | [diff] [blame] | 500 | .llseek = no_llseek, |
| 501 | .mmap = drm_gem_cma_mmap, |
| 502 | }; |
| 503 | |
| 504 | static struct drm_driver tilcdc_driver = { |
| 505 | .driver_features = DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_MODESET, |
| 506 | .load = tilcdc_load, |
| 507 | .unload = tilcdc_unload, |
| 508 | .preclose = tilcdc_preclose, |
| 509 | .lastclose = tilcdc_lastclose, |
| 510 | .irq_handler = tilcdc_irq, |
| 511 | .irq_preinstall = tilcdc_irq_preinstall, |
| 512 | .irq_postinstall = tilcdc_irq_postinstall, |
| 513 | .irq_uninstall = tilcdc_irq_uninstall, |
| 514 | .get_vblank_counter = drm_vblank_count, |
| 515 | .enable_vblank = tilcdc_enable_vblank, |
| 516 | .disable_vblank = tilcdc_disable_vblank, |
| 517 | .gem_free_object = drm_gem_cma_free_object, |
| 518 | .gem_vm_ops = &drm_gem_cma_vm_ops, |
| 519 | .dumb_create = drm_gem_cma_dumb_create, |
| 520 | .dumb_map_offset = drm_gem_cma_dumb_map_offset, |
Daniel Vetter | 43387b3 | 2013-07-16 09:12:04 +0200 | [diff] [blame] | 521 | .dumb_destroy = drm_gem_dumb_destroy, |
Rob Clark | 16ea975 | 2013-01-08 15:04:28 -0600 | [diff] [blame] | 522 | #ifdef CONFIG_DEBUG_FS |
| 523 | .debugfs_init = tilcdc_debugfs_init, |
| 524 | .debugfs_cleanup = tilcdc_debugfs_cleanup, |
| 525 | #endif |
| 526 | .fops = &fops, |
| 527 | .name = "tilcdc", |
| 528 | .desc = "TI LCD Controller DRM", |
| 529 | .date = "20121205", |
| 530 | .major = 1, |
| 531 | .minor = 0, |
| 532 | }; |
| 533 | |
| 534 | /* |
| 535 | * Power management: |
| 536 | */ |
| 537 | |
| 538 | #ifdef CONFIG_PM_SLEEP |
| 539 | static int tilcdc_pm_suspend(struct device *dev) |
| 540 | { |
| 541 | struct drm_device *ddev = dev_get_drvdata(dev); |
| 542 | struct tilcdc_drm_private *priv = ddev->dev_private; |
| 543 | unsigned i, n = 0; |
| 544 | |
| 545 | drm_kms_helper_poll_disable(ddev); |
| 546 | |
| 547 | /* Save register state: */ |
| 548 | for (i = 0; i < ARRAY_SIZE(registers); i++) |
| 549 | if (registers[i].save && (priv->rev >= registers[i].rev)) |
| 550 | priv->saved_register[n++] = tilcdc_read(ddev, registers[i].reg); |
| 551 | |
| 552 | return 0; |
| 553 | } |
| 554 | |
| 555 | static int tilcdc_pm_resume(struct device *dev) |
| 556 | { |
| 557 | struct drm_device *ddev = dev_get_drvdata(dev); |
| 558 | struct tilcdc_drm_private *priv = ddev->dev_private; |
| 559 | unsigned i, n = 0; |
| 560 | |
| 561 | /* Restore register state: */ |
| 562 | for (i = 0; i < ARRAY_SIZE(registers); i++) |
| 563 | if (registers[i].save && (priv->rev >= registers[i].rev)) |
| 564 | tilcdc_write(ddev, registers[i].reg, priv->saved_register[n++]); |
| 565 | |
| 566 | drm_kms_helper_poll_enable(ddev); |
| 567 | |
| 568 | return 0; |
| 569 | } |
| 570 | #endif |
| 571 | |
| 572 | static const struct dev_pm_ops tilcdc_pm_ops = { |
| 573 | SET_SYSTEM_SLEEP_PM_OPS(tilcdc_pm_suspend, tilcdc_pm_resume) |
| 574 | }; |
| 575 | |
| 576 | /* |
| 577 | * Platform driver: |
| 578 | */ |
| 579 | |
| 580 | static int tilcdc_pdev_probe(struct platform_device *pdev) |
| 581 | { |
| 582 | /* bail out early if no DT data: */ |
| 583 | if (!pdev->dev.of_node) { |
| 584 | dev_err(&pdev->dev, "device-tree data is missing\n"); |
| 585 | return -ENXIO; |
| 586 | } |
| 587 | |
Darren Etheridge | 39de619 | 2013-06-21 13:52:27 -0500 | [diff] [blame] | 588 | /* defer probing if slave is in deferred probing */ |
| 589 | if (slave_probing == true) |
| 590 | return -EPROBE_DEFER; |
| 591 | |
Rob Clark | 16ea975 | 2013-01-08 15:04:28 -0600 | [diff] [blame] | 592 | return drm_platform_init(&tilcdc_driver, pdev); |
| 593 | } |
| 594 | |
| 595 | static int tilcdc_pdev_remove(struct platform_device *pdev) |
| 596 | { |
Daniel Vetter | c84b435 | 2013-12-11 11:34:25 +0100 | [diff] [blame] | 597 | drm_put_dev(platform_get_drvdata(pdev)); |
Rob Clark | 16ea975 | 2013-01-08 15:04:28 -0600 | [diff] [blame] | 598 | |
| 599 | return 0; |
| 600 | } |
| 601 | |
| 602 | static struct of_device_id tilcdc_of_match[] = { |
| 603 | { .compatible = "ti,am33xx-tilcdc", }, |
| 604 | { }, |
| 605 | }; |
| 606 | MODULE_DEVICE_TABLE(of, tilcdc_of_match); |
| 607 | |
| 608 | static struct platform_driver tilcdc_platform_driver = { |
| 609 | .probe = tilcdc_pdev_probe, |
| 610 | .remove = tilcdc_pdev_remove, |
| 611 | .driver = { |
| 612 | .owner = THIS_MODULE, |
| 613 | .name = "tilcdc", |
| 614 | .pm = &tilcdc_pm_ops, |
| 615 | .of_match_table = tilcdc_of_match, |
| 616 | }, |
| 617 | }; |
| 618 | |
| 619 | static int __init tilcdc_drm_init(void) |
| 620 | { |
| 621 | DBG("init"); |
| 622 | tilcdc_tfp410_init(); |
Rob Clark | 6e8de0b | 2013-01-22 16:02:21 -0600 | [diff] [blame] | 623 | tilcdc_slave_init(); |
Rob Clark | 0d4bbaf | 2012-12-18 17:34:16 -0600 | [diff] [blame] | 624 | tilcdc_panel_init(); |
Rob Clark | 16ea975 | 2013-01-08 15:04:28 -0600 | [diff] [blame] | 625 | return platform_driver_register(&tilcdc_platform_driver); |
| 626 | } |
| 627 | |
| 628 | static void __exit tilcdc_drm_fini(void) |
| 629 | { |
| 630 | DBG("fini"); |
| 631 | tilcdc_tfp410_fini(); |
Rob Clark | 6e8de0b | 2013-01-22 16:02:21 -0600 | [diff] [blame] | 632 | tilcdc_slave_fini(); |
Rob Clark | 0d4bbaf | 2012-12-18 17:34:16 -0600 | [diff] [blame] | 633 | tilcdc_panel_fini(); |
Rob Clark | 16ea975 | 2013-01-08 15:04:28 -0600 | [diff] [blame] | 634 | platform_driver_unregister(&tilcdc_platform_driver); |
| 635 | } |
| 636 | |
Rob Clark | 6e8de0b | 2013-01-22 16:02:21 -0600 | [diff] [blame] | 637 | late_initcall(tilcdc_drm_init); |
Rob Clark | 16ea975 | 2013-01-08 15:04:28 -0600 | [diff] [blame] | 638 | module_exit(tilcdc_drm_fini); |
| 639 | |
| 640 | MODULE_AUTHOR("Rob Clark <robdclark@gmail.com"); |
| 641 | MODULE_DESCRIPTION("TI LCD Controller DRM Driver"); |
| 642 | MODULE_LICENSE("GPL"); |