2 * Copyright 2006 Dave Airlie <airlied@linux.ie>
3 * Copyright © 2006-2007 Intel Corporation
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
25 * Eric Anholt <eric@anholt.net>
27 #include <linux/i2c.h>
29 #include <drm/drm_crtc.h>
30 #include "intel_drv.h"
31 #include <drm/i915_drm.h>
35 #define SIL164_ADDR 0x38
36 #define CH7xxx_ADDR 0x76
37 #define TFP410_ADDR 0x38
38 #define NS2501_ADDR 0x38
40 static const struct intel_dvo_device intel_dvo_devices
[] = {
42 .type
= INTEL_DVO_CHIP_TMDS
,
45 .slave_addr
= SIL164_ADDR
,
46 .dev_ops
= &sil164_ops
,
49 .type
= INTEL_DVO_CHIP_TMDS
,
52 .slave_addr
= CH7xxx_ADDR
,
53 .dev_ops
= &ch7xxx_ops
,
56 .type
= INTEL_DVO_CHIP_TMDS
,
59 .slave_addr
= 0x75, /* For some ch7010 */
60 .dev_ops
= &ch7xxx_ops
,
63 .type
= INTEL_DVO_CHIP_LVDS
,
66 .slave_addr
= 0x02, /* Might also be 0x44, 0x84, 0xc4 */
70 .type
= INTEL_DVO_CHIP_TMDS
,
73 .slave_addr
= TFP410_ADDR
,
74 .dev_ops
= &tfp410_ops
,
77 .type
= INTEL_DVO_CHIP_LVDS
,
81 .gpio
= GMBUS_PORT_DPB
,
82 .dev_ops
= &ch7017_ops
,
85 .type
= INTEL_DVO_CHIP_TMDS
,
88 .slave_addr
= NS2501_ADDR
,
89 .dev_ops
= &ns2501_ops
,
94 struct intel_encoder base
;
96 struct intel_dvo_device dev
;
98 struct drm_display_mode
*panel_fixed_mode
;
99 bool panel_wants_dither
;
102 static struct intel_dvo
*enc_to_dvo(struct intel_encoder
*encoder
)
104 return container_of(encoder
, struct intel_dvo
, base
);
107 static struct intel_dvo
*intel_attached_dvo(struct drm_connector
*connector
)
109 return enc_to_dvo(intel_attached_encoder(connector
));
112 static bool intel_dvo_connector_get_hw_state(struct intel_connector
*connector
)
114 struct intel_dvo
*intel_dvo
= intel_attached_dvo(&connector
->base
);
116 return intel_dvo
->dev
.dev_ops
->get_hw_state(&intel_dvo
->dev
);
119 static bool intel_dvo_get_hw_state(struct intel_encoder
*encoder
,
120 enum i915_pipe
*pipe
)
122 struct drm_device
*dev
= encoder
->base
.dev
;
123 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
124 struct intel_dvo
*intel_dvo
= enc_to_dvo(encoder
);
127 tmp
= I915_READ(intel_dvo
->dev
.dvo_reg
);
129 if (!(tmp
& DVO_ENABLE
))
132 *pipe
= PORT_TO_PIPE(tmp
);
137 static void intel_dvo_get_config(struct intel_encoder
*encoder
,
138 struct intel_crtc_config
*pipe_config
)
140 struct drm_i915_private
*dev_priv
= encoder
->base
.dev
->dev_private
;
141 struct intel_dvo
*intel_dvo
= enc_to_dvo(encoder
);
144 tmp
= I915_READ(intel_dvo
->dev
.dvo_reg
);
145 if (tmp
& DVO_HSYNC_ACTIVE_HIGH
)
146 flags
|= DRM_MODE_FLAG_PHSYNC
;
148 flags
|= DRM_MODE_FLAG_NHSYNC
;
149 if (tmp
& DVO_VSYNC_ACTIVE_HIGH
)
150 flags
|= DRM_MODE_FLAG_PVSYNC
;
152 flags
|= DRM_MODE_FLAG_NVSYNC
;
154 pipe_config
->adjusted_mode
.flags
|= flags
;
156 pipe_config
->adjusted_mode
.crtc_clock
= pipe_config
->port_clock
;
159 static void intel_disable_dvo(struct intel_encoder
*encoder
)
161 struct drm_i915_private
*dev_priv
= encoder
->base
.dev
->dev_private
;
162 struct intel_dvo
*intel_dvo
= enc_to_dvo(encoder
);
163 u32 dvo_reg
= intel_dvo
->dev
.dvo_reg
;
164 u32 temp
= I915_READ(dvo_reg
);
166 intel_dvo
->dev
.dev_ops
->dpms(&intel_dvo
->dev
, false);
167 I915_WRITE(dvo_reg
, temp
& ~DVO_ENABLE
);
171 static void intel_enable_dvo(struct intel_encoder
*encoder
)
173 struct drm_i915_private
*dev_priv
= encoder
->base
.dev
->dev_private
;
174 struct intel_dvo
*intel_dvo
= enc_to_dvo(encoder
);
175 struct intel_crtc
*crtc
= to_intel_crtc(encoder
->base
.crtc
);
176 u32 dvo_reg
= intel_dvo
->dev
.dvo_reg
;
177 u32 temp
= I915_READ(dvo_reg
);
179 I915_WRITE(dvo_reg
, temp
| DVO_ENABLE
);
181 intel_dvo
->dev
.dev_ops
->mode_set(&intel_dvo
->dev
,
182 &crtc
->config
.requested_mode
,
183 &crtc
->config
.adjusted_mode
);
185 intel_dvo
->dev
.dev_ops
->dpms(&intel_dvo
->dev
, true);
188 /* Special dpms function to support cloning between dvo/sdvo/crt. */
189 static void intel_dvo_dpms(struct drm_connector
*connector
, int mode
)
191 struct intel_dvo
*intel_dvo
= intel_attached_dvo(connector
);
192 struct drm_crtc
*crtc
;
193 struct intel_crtc_config
*config
;
195 /* dvo supports only 2 dpms states. */
196 if (mode
!= DRM_MODE_DPMS_ON
)
197 mode
= DRM_MODE_DPMS_OFF
;
199 if (mode
== connector
->dpms
)
202 connector
->dpms
= mode
;
204 /* Only need to change hw state when actually enabled */
205 crtc
= intel_dvo
->base
.base
.crtc
;
207 intel_dvo
->base
.connectors_active
= false;
211 /* We call connector dpms manually below in case pipe dpms doesn't
212 * change due to cloning. */
213 if (mode
== DRM_MODE_DPMS_ON
) {
214 config
= &to_intel_crtc(crtc
)->config
;
216 intel_dvo
->base
.connectors_active
= true;
218 intel_crtc_update_dpms(crtc
);
220 intel_dvo
->dev
.dev_ops
->mode_set(&intel_dvo
->dev
,
221 &config
->requested_mode
,
222 &config
->adjusted_mode
);
224 intel_dvo
->dev
.dev_ops
->dpms(&intel_dvo
->dev
, true);
226 intel_dvo
->dev
.dev_ops
->dpms(&intel_dvo
->dev
, false);
228 intel_dvo
->base
.connectors_active
= false;
230 intel_crtc_update_dpms(crtc
);
233 intel_modeset_check_state(connector
->dev
);
236 static enum drm_mode_status
237 intel_dvo_mode_valid(struct drm_connector
*connector
,
238 struct drm_display_mode
*mode
)
240 struct intel_dvo
*intel_dvo
= intel_attached_dvo(connector
);
242 if (mode
->flags
& DRM_MODE_FLAG_DBLSCAN
)
243 return MODE_NO_DBLESCAN
;
245 /* XXX: Validate clock range */
247 if (intel_dvo
->panel_fixed_mode
) {
248 if (mode
->hdisplay
> intel_dvo
->panel_fixed_mode
->hdisplay
)
250 if (mode
->vdisplay
> intel_dvo
->panel_fixed_mode
->vdisplay
)
254 return intel_dvo
->dev
.dev_ops
->mode_valid(&intel_dvo
->dev
, mode
);
257 static bool intel_dvo_compute_config(struct intel_encoder
*encoder
,
258 struct intel_crtc_config
*pipe_config
)
260 struct intel_dvo
*intel_dvo
= enc_to_dvo(encoder
);
261 struct drm_display_mode
*adjusted_mode
= &pipe_config
->adjusted_mode
;
263 /* If we have timings from the BIOS for the panel, put them in
264 * to the adjusted mode. The CRTC will be set up for this mode,
265 * with the panel scaling set up to source from the H/VDisplay
266 * of the original mode.
268 if (intel_dvo
->panel_fixed_mode
!= NULL
) {
269 #define C(x) adjusted_mode->x = intel_dvo->panel_fixed_mode->x
281 drm_mode_set_crtcinfo(adjusted_mode
, 0);
287 static void intel_dvo_pre_enable(struct intel_encoder
*encoder
)
289 struct drm_device
*dev
= encoder
->base
.dev
;
290 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
291 struct intel_crtc
*crtc
= to_intel_crtc(encoder
->base
.crtc
);
292 struct drm_display_mode
*adjusted_mode
= &crtc
->config
.adjusted_mode
;
293 struct intel_dvo
*intel_dvo
= enc_to_dvo(encoder
);
294 int pipe
= crtc
->pipe
;
296 u32 dvo_reg
= intel_dvo
->dev
.dvo_reg
, dvo_srcdim_reg
;
301 dvo_srcdim_reg
= DVOA_SRCDIM
;
304 dvo_srcdim_reg
= DVOB_SRCDIM
;
307 dvo_srcdim_reg
= DVOC_SRCDIM
;
311 /* Save the data order, since I don't know what it should be set to. */
312 dvo_val
= I915_READ(dvo_reg
) &
313 (DVO_PRESERVE_MASK
| DVO_DATA_ORDER_GBRG
);
314 dvo_val
|= DVO_DATA_ORDER_FP
| DVO_BORDER_ENABLE
|
315 DVO_BLANK_ACTIVE_HIGH
;
318 dvo_val
|= DVO_PIPE_B_SELECT
;
319 dvo_val
|= DVO_PIPE_STALL
;
320 if (adjusted_mode
->flags
& DRM_MODE_FLAG_PHSYNC
)
321 dvo_val
|= DVO_HSYNC_ACTIVE_HIGH
;
322 if (adjusted_mode
->flags
& DRM_MODE_FLAG_PVSYNC
)
323 dvo_val
|= DVO_VSYNC_ACTIVE_HIGH
;
325 /*I915_WRITE(DVOB_SRCDIM,
326 (adjusted_mode->hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) |
327 (adjusted_mode->VDisplay << DVO_SRCDIM_VERTICAL_SHIFT));*/
328 I915_WRITE(dvo_srcdim_reg
,
329 (adjusted_mode
->hdisplay
<< DVO_SRCDIM_HORIZONTAL_SHIFT
) |
330 (adjusted_mode
->vdisplay
<< DVO_SRCDIM_VERTICAL_SHIFT
));
331 /*I915_WRITE(DVOB, dvo_val);*/
332 I915_WRITE(dvo_reg
, dvo_val
);
336 * Detect the output connection on our DVO device.
340 static enum drm_connector_status
341 intel_dvo_detect(struct drm_connector
*connector
, bool force
)
343 struct intel_dvo
*intel_dvo
= intel_attached_dvo(connector
);
344 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
345 connector
->base
.id
, connector
->name
);
346 return intel_dvo
->dev
.dev_ops
->detect(&intel_dvo
->dev
);
349 static int intel_dvo_get_modes(struct drm_connector
*connector
)
351 struct intel_dvo
*intel_dvo
= intel_attached_dvo(connector
);
352 struct drm_i915_private
*dev_priv
= connector
->dev
->dev_private
;
354 /* We should probably have an i2c driver get_modes function for those
355 * devices which will have a fixed set of modes determined by the chip
356 * (TV-out, for example), but for now with just TMDS and LVDS,
357 * that's not the case.
359 intel_ddc_get_modes(connector
,
360 intel_gmbus_get_adapter(dev_priv
, GMBUS_PORT_DPC
));
361 if (!list_empty(&connector
->probed_modes
))
364 if (intel_dvo
->panel_fixed_mode
!= NULL
) {
365 struct drm_display_mode
*mode
;
366 mode
= drm_mode_duplicate(connector
->dev
, intel_dvo
->panel_fixed_mode
);
368 drm_mode_probed_add(connector
, mode
);
376 static void intel_dvo_destroy(struct drm_connector
*connector
)
378 drm_connector_cleanup(connector
);
382 static const struct drm_connector_funcs intel_dvo_connector_funcs
= {
383 .dpms
= intel_dvo_dpms
,
384 .detect
= intel_dvo_detect
,
385 .destroy
= intel_dvo_destroy
,
386 .fill_modes
= drm_helper_probe_single_connector_modes
,
389 static const struct drm_connector_helper_funcs intel_dvo_connector_helper_funcs
= {
390 .mode_valid
= intel_dvo_mode_valid
,
391 .get_modes
= intel_dvo_get_modes
,
392 .best_encoder
= intel_best_encoder
,
395 static void intel_dvo_enc_destroy(struct drm_encoder
*encoder
)
397 struct intel_dvo
*intel_dvo
= enc_to_dvo(to_intel_encoder(encoder
));
399 if (intel_dvo
->dev
.dev_ops
->destroy
)
400 intel_dvo
->dev
.dev_ops
->destroy(&intel_dvo
->dev
);
402 kfree(intel_dvo
->panel_fixed_mode
);
404 intel_encoder_destroy(encoder
);
407 static const struct drm_encoder_funcs intel_dvo_enc_funcs
= {
408 .destroy
= intel_dvo_enc_destroy
,
412 * Attempts to get a fixed panel timing for LVDS (currently only the i830).
414 * Other chips with DVO LVDS will need to extend this to deal with the LVDS
415 * chip being on DVOB/C and having multiple pipes.
417 static struct drm_display_mode
*
418 intel_dvo_get_current_mode(struct drm_connector
*connector
)
420 struct drm_device
*dev
= connector
->dev
;
421 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
422 struct intel_dvo
*intel_dvo
= intel_attached_dvo(connector
);
423 uint32_t dvo_val
= I915_READ(intel_dvo
->dev
.dvo_reg
);
424 struct drm_display_mode
*mode
= NULL
;
426 /* If the DVO port is active, that'll be the LVDS, so we can pull out
427 * its timings to get how the BIOS set up the panel.
429 if (dvo_val
& DVO_ENABLE
) {
430 struct drm_crtc
*crtc
;
431 int pipe
= (dvo_val
& DVO_PIPE_B_SELECT
) ? 1 : 0;
433 crtc
= intel_get_crtc_for_pipe(dev
, pipe
);
435 mode
= intel_crtc_mode_get(dev
, crtc
);
437 mode
->type
|= DRM_MODE_TYPE_PREFERRED
;
438 if (dvo_val
& DVO_HSYNC_ACTIVE_HIGH
)
439 mode
->flags
|= DRM_MODE_FLAG_PHSYNC
;
440 if (dvo_val
& DVO_VSYNC_ACTIVE_HIGH
)
441 mode
->flags
|= DRM_MODE_FLAG_PVSYNC
;
449 void intel_dvo_init(struct drm_device
*dev
)
451 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
452 struct intel_encoder
*intel_encoder
;
453 struct intel_dvo
*intel_dvo
;
454 struct intel_connector
*intel_connector
;
456 int encoder_type
= DRM_MODE_ENCODER_NONE
;
458 intel_dvo
= kzalloc(sizeof(*intel_dvo
), GFP_KERNEL
);
462 intel_connector
= kzalloc(sizeof(*intel_connector
), GFP_KERNEL
);
463 if (!intel_connector
) {
468 intel_encoder
= &intel_dvo
->base
;
469 drm_encoder_init(dev
, &intel_encoder
->base
,
470 &intel_dvo_enc_funcs
, encoder_type
);
472 intel_encoder
->disable
= intel_disable_dvo
;
473 intel_encoder
->enable
= intel_enable_dvo
;
474 intel_encoder
->get_hw_state
= intel_dvo_get_hw_state
;
475 intel_encoder
->get_config
= intel_dvo_get_config
;
476 intel_encoder
->compute_config
= intel_dvo_compute_config
;
477 intel_encoder
->pre_enable
= intel_dvo_pre_enable
;
478 intel_connector
->get_hw_state
= intel_dvo_connector_get_hw_state
;
479 intel_connector
->unregister
= intel_connector_unregister
;
481 /* Now, try to find a controller */
482 for (i
= 0; i
< ARRAY_SIZE(intel_dvo_devices
); i
++) {
483 struct drm_connector
*connector
= &intel_connector
->base
;
484 const struct intel_dvo_device
*dvo
= &intel_dvo_devices
[i
];
489 /* Allow the I2C driver info to specify the GPIO to be used in
490 * special cases, but otherwise default to what's defined
493 if (intel_gmbus_is_port_valid(dvo
->gpio
))
495 else if (dvo
->type
== INTEL_DVO_CHIP_LVDS
)
496 gpio
= GMBUS_PORT_SSC
;
498 gpio
= GMBUS_PORT_DPB
;
500 /* Set up the I2C bus necessary for the chip we're probing.
501 * It appears that everything is on GPIOE except for panels
502 * on i830 laptops, which are on GPIOB (DVOA).
504 i2c
= intel_gmbus_get_adapter(dev_priv
, gpio
);
506 intel_dvo
->dev
= *dvo
;
508 /* GMBUS NAK handling seems to be unstable, hence let the
509 * transmitter detection run in bit banging mode for now.
511 intel_gmbus_force_bit(i2c
, true);
513 dvoinit
= dvo
->dev_ops
->init(&intel_dvo
->dev
, i2c
);
515 intel_gmbus_force_bit(i2c
, false);
520 intel_encoder
->type
= INTEL_OUTPUT_DVO
;
521 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1);
523 case INTEL_DVO_CHIP_TMDS
:
524 intel_encoder
->cloneable
= (1 << INTEL_OUTPUT_ANALOG
) |
525 (1 << INTEL_OUTPUT_DVO
);
526 drm_connector_init(dev
, connector
,
527 &intel_dvo_connector_funcs
,
528 DRM_MODE_CONNECTOR_DVII
);
529 encoder_type
= DRM_MODE_ENCODER_TMDS
;
531 case INTEL_DVO_CHIP_LVDS
:
532 intel_encoder
->cloneable
= 0;
533 drm_connector_init(dev
, connector
,
534 &intel_dvo_connector_funcs
,
535 DRM_MODE_CONNECTOR_LVDS
);
536 encoder_type
= DRM_MODE_ENCODER_LVDS
;
540 drm_connector_helper_add(connector
,
541 &intel_dvo_connector_helper_funcs
);
542 connector
->display_info
.subpixel_order
= SubPixelHorizontalRGB
;
543 connector
->interlace_allowed
= false;
544 connector
->doublescan_allowed
= false;
546 intel_connector_attach_encoder(intel_connector
, intel_encoder
);
547 if (dvo
->type
== INTEL_DVO_CHIP_LVDS
) {
548 /* For our LVDS chipsets, we should hopefully be able
549 * to dig the fixed panel mode out of the BIOS data.
550 * However, it's in a different format from the BIOS
551 * data on chipsets with integrated LVDS (stored in AIM
552 * headers, likely), so for now, just get the current
553 * mode being output through DVO.
555 intel_dvo
->panel_fixed_mode
=
556 intel_dvo_get_current_mode(connector
);
557 intel_dvo
->panel_wants_dither
= true;
560 drm_sysfs_connector_add(connector
);
564 drm_encoder_cleanup(&intel_encoder
->base
);
566 kfree(intel_connector
);