Matthew Garrett | 8ee1c3d | 2008-08-05 19:37:25 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2008 Intel Corporation <hong.liu@intel.com> |
| 3 | * Copyright 2008 Red Hat <mjg@redhat.com> |
| 4 | * |
| 5 | * Permission is hereby granted, free of charge, to any person obtaining |
| 6 | * a copy of this software and associated documentation files (the |
| 7 | * "Software"), to deal in the Software without restriction, including |
| 8 | * without limitation the rights to use, copy, modify, merge, publish, |
| 9 | * distribute, sub license, and/or sell copies of the Software, and to |
| 10 | * permit persons to whom the Software is furnished to do so, subject to |
| 11 | * the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice (including the |
| 14 | * next paragraph) shall be included in all copies or substantial |
| 15 | * portions of the Software. |
| 16 | * |
| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 18 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 19 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 20 | * NON-INFRINGEMENT. IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE |
| 21 | * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 22 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 23 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 24 | * SOFTWARE. |
| 25 | * |
| 26 | */ |
| 27 | |
| 28 | #include <linux/acpi.h> |
Matthew Garrett | 74a365b | 2009-03-19 21:35:39 +0000 | [diff] [blame] | 29 | #include <acpi/video.h> |
Matthew Garrett | 8ee1c3d | 2008-08-05 19:37:25 +0100 | [diff] [blame] | 30 | |
| 31 | #include "drmP.h" |
| 32 | #include "i915_drm.h" |
| 33 | #include "i915_drv.h" |
| 34 | |
| 35 | #define PCI_ASLE 0xe4 |
| 36 | #define PCI_LBPC 0xf4 |
| 37 | #define PCI_ASLS 0xfc |
| 38 | |
| 39 | #define OPREGION_SZ (8*1024) |
| 40 | #define OPREGION_HEADER_OFFSET 0 |
| 41 | #define OPREGION_ACPI_OFFSET 0x100 |
| 42 | #define OPREGION_SWSCI_OFFSET 0x200 |
| 43 | #define OPREGION_ASLE_OFFSET 0x300 |
| 44 | #define OPREGION_VBT_OFFSET 0x1000 |
| 45 | |
| 46 | #define OPREGION_SIGNATURE "IntelGraphicsMem" |
| 47 | #define MBOX_ACPI (1<<0) |
| 48 | #define MBOX_SWSCI (1<<1) |
| 49 | #define MBOX_ASLE (1<<2) |
| 50 | |
| 51 | struct opregion_header { |
| 52 | u8 signature[16]; |
| 53 | u32 size; |
| 54 | u32 opregion_ver; |
| 55 | u8 bios_ver[32]; |
| 56 | u8 vbios_ver[16]; |
| 57 | u8 driver_ver[16]; |
| 58 | u32 mboxes; |
| 59 | u8 reserved[164]; |
| 60 | } __attribute__((packed)); |
| 61 | |
| 62 | /* OpRegion mailbox #1: public ACPI methods */ |
| 63 | struct opregion_acpi { |
| 64 | u32 drdy; /* driver readiness */ |
| 65 | u32 csts; /* notification status */ |
| 66 | u32 cevt; /* current event */ |
| 67 | u8 rsvd1[20]; |
| 68 | u32 didl[8]; /* supported display devices ID list */ |
| 69 | u32 cpdl[8]; /* currently presented display list */ |
| 70 | u32 cadl[8]; /* currently active display list */ |
| 71 | u32 nadl[8]; /* next active devices list */ |
| 72 | u32 aslp; /* ASL sleep time-out */ |
| 73 | u32 tidx; /* toggle table index */ |
| 74 | u32 chpd; /* current hotplug enable indicator */ |
| 75 | u32 clid; /* current lid state*/ |
| 76 | u32 cdck; /* current docking state */ |
| 77 | u32 sxsw; /* Sx state resume */ |
| 78 | u32 evts; /* ASL supported events */ |
| 79 | u32 cnot; /* current OS notification */ |
| 80 | u32 nrdy; /* driver status */ |
| 81 | u8 rsvd2[60]; |
| 82 | } __attribute__((packed)); |
| 83 | |
| 84 | /* OpRegion mailbox #2: SWSCI */ |
| 85 | struct opregion_swsci { |
| 86 | u32 scic; /* SWSCI command|status|data */ |
| 87 | u32 parm; /* command parameters */ |
| 88 | u32 dslp; /* driver sleep time-out */ |
| 89 | u8 rsvd[244]; |
| 90 | } __attribute__((packed)); |
| 91 | |
| 92 | /* OpRegion mailbox #3: ASLE */ |
| 93 | struct opregion_asle { |
| 94 | u32 ardy; /* driver readiness */ |
| 95 | u32 aslc; /* ASLE interrupt command */ |
| 96 | u32 tche; /* technology enabled indicator */ |
| 97 | u32 alsi; /* current ALS illuminance reading */ |
| 98 | u32 bclp; /* backlight brightness to set */ |
| 99 | u32 pfit; /* panel fitting state */ |
| 100 | u32 cblv; /* current brightness level */ |
| 101 | u16 bclm[20]; /* backlight level duty cycle mapping table */ |
| 102 | u32 cpfm; /* current panel fitting mode */ |
| 103 | u32 epfm; /* enabled panel fitting modes */ |
| 104 | u8 plut[74]; /* panel LUT and identifier */ |
| 105 | u32 pfmb; /* PWM freq and min brightness */ |
| 106 | u8 rsvd[102]; |
| 107 | } __attribute__((packed)); |
| 108 | |
| 109 | /* ASLE irq request bits */ |
| 110 | #define ASLE_SET_ALS_ILLUM (1 << 0) |
| 111 | #define ASLE_SET_BACKLIGHT (1 << 1) |
| 112 | #define ASLE_SET_PFIT (1 << 2) |
| 113 | #define ASLE_SET_PWM_FREQ (1 << 3) |
| 114 | #define ASLE_REQ_MSK 0xf |
| 115 | |
| 116 | /* response bits of ASLE irq request */ |
| 117 | #define ASLE_ALS_ILLUM_FAIL (2<<10) |
| 118 | #define ASLE_BACKLIGHT_FAIL (2<<12) |
| 119 | #define ASLE_PFIT_FAIL (2<<14) |
| 120 | #define ASLE_PWM_FREQ_FAIL (2<<16) |
| 121 | |
| 122 | /* ASLE backlight brightness to set */ |
| 123 | #define ASLE_BCLP_VALID (1<<31) |
| 124 | #define ASLE_BCLP_MSK (~(1<<31)) |
| 125 | |
| 126 | /* ASLE panel fitting request */ |
| 127 | #define ASLE_PFIT_VALID (1<<31) |
| 128 | #define ASLE_PFIT_CENTER (1<<0) |
| 129 | #define ASLE_PFIT_STRETCH_TEXT (1<<1) |
| 130 | #define ASLE_PFIT_STRETCH_GFX (1<<2) |
| 131 | |
| 132 | /* PWM frequency and minimum brightness */ |
| 133 | #define ASLE_PFMB_BRIGHTNESS_MASK (0xff) |
| 134 | #define ASLE_PFMB_BRIGHTNESS_VALID (1<<8) |
| 135 | #define ASLE_PFMB_PWM_MASK (0x7ffffe00) |
| 136 | #define ASLE_PFMB_PWM_VALID (1<<31) |
| 137 | |
| 138 | #define ASLE_CBLV_VALID (1<<31) |
| 139 | |
Matthew Garrett | 74a365b | 2009-03-19 21:35:39 +0000 | [diff] [blame] | 140 | #define ACPI_OTHER_OUTPUT (0<<8) |
| 141 | #define ACPI_VGA_OUTPUT (1<<8) |
| 142 | #define ACPI_TV_OUTPUT (2<<8) |
| 143 | #define ACPI_DIGITAL_OUTPUT (3<<8) |
| 144 | #define ACPI_LVDS_OUTPUT (4<<8) |
| 145 | |
Matthew Garrett | 8ee1c3d | 2008-08-05 19:37:25 +0100 | [diff] [blame] | 146 | static u32 asle_set_backlight(struct drm_device *dev, u32 bclp) |
| 147 | { |
| 148 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 149 | struct opregion_asle *asle = dev_priv->opregion.asle; |
| 150 | u32 blc_pwm_ctl, blc_pwm_ctl2; |
| 151 | |
| 152 | if (!(bclp & ASLE_BCLP_VALID)) |
| 153 | return ASLE_BACKLIGHT_FAIL; |
| 154 | |
| 155 | bclp &= ASLE_BCLP_MSK; |
| 156 | if (bclp < 0 || bclp > 255) |
| 157 | return ASLE_BACKLIGHT_FAIL; |
| 158 | |
| 159 | blc_pwm_ctl = I915_READ(BLC_PWM_CTL); |
| 160 | blc_pwm_ctl &= ~BACKLIGHT_DUTY_CYCLE_MASK; |
| 161 | blc_pwm_ctl2 = I915_READ(BLC_PWM_CTL2); |
| 162 | |
| 163 | if (blc_pwm_ctl2 & BLM_COMBINATION_MODE) |
| 164 | pci_write_config_dword(dev->pdev, PCI_LBPC, bclp); |
| 165 | else |
| 166 | I915_WRITE(BLC_PWM_CTL, blc_pwm_ctl | ((bclp * 0x101)-1)); |
| 167 | |
| 168 | asle->cblv = (bclp*0x64)/0xff | ASLE_CBLV_VALID; |
| 169 | |
| 170 | return 0; |
| 171 | } |
| 172 | |
| 173 | static u32 asle_set_als_illum(struct drm_device *dev, u32 alsi) |
| 174 | { |
| 175 | /* alsi is the current ALS reading in lux. 0 indicates below sensor |
| 176 | range, 0xffff indicates above sensor range. 1-0xfffe are valid */ |
| 177 | return 0; |
| 178 | } |
| 179 | |
| 180 | static u32 asle_set_pwm_freq(struct drm_device *dev, u32 pfmb) |
| 181 | { |
| 182 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 183 | if (pfmb & ASLE_PFMB_PWM_VALID) { |
| 184 | u32 blc_pwm_ctl = I915_READ(BLC_PWM_CTL); |
| 185 | u32 pwm = pfmb & ASLE_PFMB_PWM_MASK; |
| 186 | blc_pwm_ctl &= BACKLIGHT_DUTY_CYCLE_MASK; |
| 187 | pwm = pwm >> 9; |
| 188 | /* FIXME - what do we do with the PWM? */ |
| 189 | } |
| 190 | return 0; |
| 191 | } |
| 192 | |
| 193 | static u32 asle_set_pfit(struct drm_device *dev, u32 pfit) |
| 194 | { |
| 195 | /* Panel fitting is currently controlled by the X code, so this is a |
| 196 | noop until modesetting support works fully */ |
| 197 | if (!(pfit & ASLE_PFIT_VALID)) |
| 198 | return ASLE_PFIT_FAIL; |
| 199 | return 0; |
| 200 | } |
| 201 | |
| 202 | void opregion_asle_intr(struct drm_device *dev) |
| 203 | { |
| 204 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 205 | struct opregion_asle *asle = dev_priv->opregion.asle; |
| 206 | u32 asle_stat = 0; |
| 207 | u32 asle_req; |
| 208 | |
| 209 | if (!asle) |
| 210 | return; |
| 211 | |
| 212 | asle_req = asle->aslc & ASLE_REQ_MSK; |
| 213 | |
| 214 | if (!asle_req) { |
| 215 | DRM_DEBUG("non asle set request??\n"); |
| 216 | return; |
| 217 | } |
| 218 | |
| 219 | if (asle_req & ASLE_SET_ALS_ILLUM) |
| 220 | asle_stat |= asle_set_als_illum(dev, asle->alsi); |
| 221 | |
| 222 | if (asle_req & ASLE_SET_BACKLIGHT) |
| 223 | asle_stat |= asle_set_backlight(dev, asle->bclp); |
| 224 | |
| 225 | if (asle_req & ASLE_SET_PFIT) |
| 226 | asle_stat |= asle_set_pfit(dev, asle->pfit); |
| 227 | |
| 228 | if (asle_req & ASLE_SET_PWM_FREQ) |
| 229 | asle_stat |= asle_set_pwm_freq(dev, asle->pfmb); |
| 230 | |
| 231 | asle->aslc = asle_stat; |
| 232 | } |
| 233 | |
| 234 | #define ASLE_ALS_EN (1<<0) |
| 235 | #define ASLE_BLC_EN (1<<1) |
| 236 | #define ASLE_PFIT_EN (1<<2) |
| 237 | #define ASLE_PFMB_EN (1<<3) |
| 238 | |
| 239 | void opregion_enable_asle(struct drm_device *dev) |
| 240 | { |
| 241 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 242 | struct opregion_asle *asle = dev_priv->opregion.asle; |
| 243 | |
| 244 | if (asle) { |
Matthew Garrett | 8ee1c3d | 2008-08-05 19:37:25 +0100 | [diff] [blame] | 245 | if (IS_MOBILE(dev)) { |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 246 | unsigned long irqflags; |
| 247 | |
| 248 | spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags); |
| 249 | i915_enable_pipestat(dev_priv, 1, |
| 250 | I915_LEGACY_BLC_EVENT_ENABLE); |
| 251 | spin_unlock_irqrestore(&dev_priv->user_irq_lock, |
| 252 | irqflags); |
| 253 | } |
Matthew Garrett | 8ee1c3d | 2008-08-05 19:37:25 +0100 | [diff] [blame] | 254 | |
| 255 | asle->tche = ASLE_ALS_EN | ASLE_BLC_EN | ASLE_PFIT_EN | |
| 256 | ASLE_PFMB_EN; |
| 257 | asle->ardy = 1; |
| 258 | } |
| 259 | } |
| 260 | |
| 261 | #define ACPI_EV_DISPLAY_SWITCH (1<<0) |
| 262 | #define ACPI_EV_LID (1<<1) |
| 263 | #define ACPI_EV_DOCK (1<<2) |
| 264 | |
| 265 | static struct intel_opregion *system_opregion; |
| 266 | |
Hannes Eder | b358d0a | 2008-12-18 21:18:47 +0100 | [diff] [blame] | 267 | static int intel_opregion_video_event(struct notifier_block *nb, |
| 268 | unsigned long val, void *data) |
Matthew Garrett | 8ee1c3d | 2008-08-05 19:37:25 +0100 | [diff] [blame] | 269 | { |
| 270 | /* The only video events relevant to opregion are 0x80. These indicate |
| 271 | either a docking event, lid switch or display switch request. In |
| 272 | Linux, these are handled by the dock, button and video drivers. |
| 273 | We might want to fix the video driver to be opregion-aware in |
| 274 | future, but right now we just indicate to the firmware that the |
| 275 | request has been handled */ |
| 276 | |
| 277 | struct opregion_acpi *acpi; |
| 278 | |
| 279 | if (!system_opregion) |
| 280 | return NOTIFY_DONE; |
| 281 | |
| 282 | acpi = system_opregion->acpi; |
| 283 | acpi->csts = 0; |
| 284 | |
| 285 | return NOTIFY_OK; |
| 286 | } |
| 287 | |
| 288 | static struct notifier_block intel_opregion_notifier = { |
| 289 | .notifier_call = intel_opregion_video_event, |
| 290 | }; |
| 291 | |
Matthew Garrett | 74a365b | 2009-03-19 21:35:39 +0000 | [diff] [blame] | 292 | /* |
| 293 | * Initialise the DIDL field in opregion. This passes a list of devices to |
| 294 | * the firmware. Values are defined by section B.4.2 of the ACPI specification |
| 295 | * (version 3) |
| 296 | */ |
| 297 | |
| 298 | static void intel_didl_outputs(struct drm_device *dev) |
| 299 | { |
| 300 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 301 | struct intel_opregion *opregion = &dev_priv->opregion; |
| 302 | struct drm_connector *connector; |
| 303 | int i = 0; |
| 304 | |
| 305 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 306 | int output_type = ACPI_OTHER_OUTPUT; |
| 307 | if (i >= 8) { |
| 308 | dev_printk (KERN_ERR, &dev->pdev->dev, |
| 309 | "More than 8 outputs detected\n"); |
| 310 | return; |
| 311 | } |
| 312 | switch (connector->connector_type) { |
| 313 | case DRM_MODE_CONNECTOR_VGA: |
| 314 | case DRM_MODE_CONNECTOR_DVIA: |
| 315 | output_type = ACPI_VGA_OUTPUT; |
| 316 | break; |
| 317 | case DRM_MODE_CONNECTOR_Composite: |
| 318 | case DRM_MODE_CONNECTOR_SVIDEO: |
| 319 | case DRM_MODE_CONNECTOR_Component: |
| 320 | case DRM_MODE_CONNECTOR_9PinDIN: |
| 321 | output_type = ACPI_TV_OUTPUT; |
| 322 | break; |
| 323 | case DRM_MODE_CONNECTOR_DVII: |
| 324 | case DRM_MODE_CONNECTOR_DVID: |
| 325 | case DRM_MODE_CONNECTOR_DisplayPort: |
| 326 | case DRM_MODE_CONNECTOR_HDMIA: |
| 327 | case DRM_MODE_CONNECTOR_HDMIB: |
| 328 | output_type = ACPI_DIGITAL_OUTPUT; |
| 329 | break; |
| 330 | case DRM_MODE_CONNECTOR_LVDS: |
| 331 | output_type = ACPI_LVDS_OUTPUT; |
| 332 | break; |
| 333 | } |
| 334 | opregion->acpi->didl[i] |= (1<<31) | output_type | i; |
| 335 | i++; |
| 336 | } |
| 337 | |
| 338 | /* If fewer than 8 outputs, the list must be null terminated */ |
| 339 | if (i < 8) |
| 340 | opregion->acpi->didl[i] = 0; |
| 341 | } |
| 342 | |
| 343 | int intel_opregion_init(struct drm_device *dev, int resume) |
Matthew Garrett | 8ee1c3d | 2008-08-05 19:37:25 +0100 | [diff] [blame] | 344 | { |
| 345 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 346 | struct intel_opregion *opregion = &dev_priv->opregion; |
| 347 | void *base; |
| 348 | u32 asls, mboxes; |
| 349 | int err = 0; |
| 350 | |
| 351 | pci_read_config_dword(dev->pdev, PCI_ASLS, &asls); |
| 352 | DRM_DEBUG("graphic opregion physical addr: 0x%x\n", asls); |
| 353 | if (asls == 0) { |
| 354 | DRM_DEBUG("ACPI OpRegion not supported!\n"); |
| 355 | return -ENOTSUPP; |
| 356 | } |
| 357 | |
| 358 | base = ioremap(asls, OPREGION_SZ); |
| 359 | if (!base) |
| 360 | return -ENOMEM; |
| 361 | |
| 362 | opregion->header = base; |
| 363 | if (memcmp(opregion->header->signature, OPREGION_SIGNATURE, 16)) { |
| 364 | DRM_DEBUG("opregion signature mismatch\n"); |
| 365 | err = -EINVAL; |
| 366 | goto err_out; |
| 367 | } |
| 368 | |
| 369 | mboxes = opregion->header->mboxes; |
| 370 | if (mboxes & MBOX_ACPI) { |
| 371 | DRM_DEBUG("Public ACPI methods supported\n"); |
| 372 | opregion->acpi = base + OPREGION_ACPI_OFFSET; |
Matthew Garrett | d770e3c | 2009-04-15 21:46:36 +0100 | [diff] [blame] | 373 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
Matthew Garrett | 74a365b | 2009-03-19 21:35:39 +0000 | [diff] [blame] | 374 | intel_didl_outputs(dev); |
Matthew Garrett | 8ee1c3d | 2008-08-05 19:37:25 +0100 | [diff] [blame] | 375 | } else { |
| 376 | DRM_DEBUG("Public ACPI methods not supported\n"); |
| 377 | err = -ENOTSUPP; |
| 378 | goto err_out; |
| 379 | } |
| 380 | opregion->enabled = 1; |
| 381 | |
| 382 | if (mboxes & MBOX_SWSCI) { |
| 383 | DRM_DEBUG("SWSCI supported\n"); |
| 384 | opregion->swsci = base + OPREGION_SWSCI_OFFSET; |
| 385 | } |
| 386 | if (mboxes & MBOX_ASLE) { |
| 387 | DRM_DEBUG("ASLE supported\n"); |
| 388 | opregion->asle = base + OPREGION_ASLE_OFFSET; |
Matthew Garrett | 44ab431 | 2009-04-01 19:53:33 +0100 | [diff] [blame] | 389 | opregion_enable_asle(dev); |
Matthew Garrett | 8ee1c3d | 2008-08-05 19:37:25 +0100 | [diff] [blame] | 390 | } |
| 391 | |
Matthew Garrett | d770e3c | 2009-04-15 21:46:36 +0100 | [diff] [blame] | 392 | if (!resume) |
| 393 | acpi_video_register(); |
| 394 | |
| 395 | |
Matthew Garrett | 8ee1c3d | 2008-08-05 19:37:25 +0100 | [diff] [blame] | 396 | /* Notify BIOS we are ready to handle ACPI video ext notifs. |
| 397 | * Right now, all the events are handled by the ACPI video module. |
| 398 | * We don't actually need to do anything with them. */ |
| 399 | opregion->acpi->csts = 0; |
| 400 | opregion->acpi->drdy = 1; |
| 401 | |
| 402 | system_opregion = opregion; |
| 403 | register_acpi_notifier(&intel_opregion_notifier); |
| 404 | |
| 405 | return 0; |
| 406 | |
| 407 | err_out: |
| 408 | iounmap(opregion->header); |
| 409 | opregion->header = NULL; |
| 410 | return err; |
| 411 | } |
| 412 | |
Matthew Garrett | 3b1c1c1 | 2009-04-01 19:52:29 +0100 | [diff] [blame] | 413 | void intel_opregion_free(struct drm_device *dev, int suspend) |
Matthew Garrett | 8ee1c3d | 2008-08-05 19:37:25 +0100 | [diff] [blame] | 414 | { |
| 415 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 416 | struct intel_opregion *opregion = &dev_priv->opregion; |
| 417 | |
| 418 | if (!opregion->enabled) |
| 419 | return; |
| 420 | |
Matthew Garrett | 3b1c1c1 | 2009-04-01 19:52:29 +0100 | [diff] [blame] | 421 | if (!suspend) |
| 422 | acpi_video_exit(); |
| 423 | |
Matthew Garrett | 8ee1c3d | 2008-08-05 19:37:25 +0100 | [diff] [blame] | 424 | opregion->acpi->drdy = 0; |
| 425 | |
| 426 | system_opregion = NULL; |
| 427 | unregister_acpi_notifier(&intel_opregion_notifier); |
| 428 | |
| 429 | /* just clear all opregion memory pointers now */ |
| 430 | iounmap(opregion->header); |
| 431 | opregion->header = NULL; |
| 432 | opregion->acpi = NULL; |
| 433 | opregion->swsci = NULL; |
| 434 | opregion->asle = NULL; |
| 435 | |
| 436 | opregion->enabled = 0; |
| 437 | } |