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>
28 #include <linux/slab.h>
32 #include "intel_drv.h"
37 #define SIL164_ADDR 0x38
38 #define CH7xxx_ADDR 0x76
39 #define TFP410_ADDR 0x38
40 #define NS2501_ADDR 0x38
42 static const struct intel_dvo_device intel_dvo_devices
[] = {
44 .type
= INTEL_DVO_CHIP_TMDS
,
47 .slave_addr
= SIL164_ADDR
,
48 .dev_ops
= &sil164_ops
,
51 .type
= INTEL_DVO_CHIP_TMDS
,
54 .slave_addr
= CH7xxx_ADDR
,
55 .dev_ops
= &ch7xxx_ops
,
58 .type
= INTEL_DVO_CHIP_LVDS
,
61 .slave_addr
= 0x02, /* Might also be 0x44, 0x84, 0xc4 */
65 .type
= INTEL_DVO_CHIP_TMDS
,
68 .slave_addr
= TFP410_ADDR
,
69 .dev_ops
= &tfp410_ops
,
72 .type
= INTEL_DVO_CHIP_LVDS
,
76 .gpio
= GMBUS_PORT_DPB
,
77 .dev_ops
= &ch7017_ops
,
80 .type
= INTEL_DVO_CHIP_TMDS
,
83 .slave_addr
= NS2501_ADDR
,
84 .dev_ops
= &ns2501_ops
,
89 struct intel_encoder base
;
91 struct intel_dvo_device dev
;
93 struct drm_display_mode
*panel_fixed_mode
;
94 bool panel_wants_dither
;
97 static struct intel_dvo
*enc_to_intel_dvo(struct drm_encoder
*encoder
)
99 return container_of(encoder
, struct intel_dvo
, base
.base
);
102 static struct intel_dvo
*intel_attached_dvo(struct drm_connector
*connector
)
104 return container_of(intel_attached_encoder(connector
),
105 struct intel_dvo
, base
);
108 static void intel_dvo_dpms(struct drm_encoder
*encoder
, int mode
)
110 struct drm_i915_private
*dev_priv
= encoder
->dev
->dev_private
;
111 struct intel_dvo
*intel_dvo
= enc_to_intel_dvo(encoder
);
112 u32 dvo_reg
= intel_dvo
->dev
.dvo_reg
;
113 u32 temp
= I915_READ(dvo_reg
);
115 if (mode
== DRM_MODE_DPMS_ON
) {
116 I915_WRITE(dvo_reg
, temp
| DVO_ENABLE
);
118 intel_dvo
->dev
.dev_ops
->dpms(&intel_dvo
->dev
, true);
120 intel_dvo
->dev
.dev_ops
->dpms(&intel_dvo
->dev
, false);
121 I915_WRITE(dvo_reg
, temp
& ~DVO_ENABLE
);
126 static int intel_dvo_mode_valid(struct drm_connector
*connector
,
127 struct drm_display_mode
*mode
)
129 struct intel_dvo
*intel_dvo
= intel_attached_dvo(connector
);
131 if (mode
->flags
& DRM_MODE_FLAG_DBLSCAN
)
132 return MODE_NO_DBLESCAN
;
134 /* XXX: Validate clock range */
136 if (intel_dvo
->panel_fixed_mode
) {
137 if (mode
->hdisplay
> intel_dvo
->panel_fixed_mode
->hdisplay
)
139 if (mode
->vdisplay
> intel_dvo
->panel_fixed_mode
->vdisplay
)
143 return intel_dvo
->dev
.dev_ops
->mode_valid(&intel_dvo
->dev
, mode
);
146 static bool intel_dvo_mode_fixup(struct drm_encoder
*encoder
,
147 const struct drm_display_mode
*mode
,
148 struct drm_display_mode
*adjusted_mode
)
150 struct intel_dvo
*intel_dvo
= enc_to_intel_dvo(encoder
);
152 /* If we have timings from the BIOS for the panel, put them in
153 * to the adjusted mode. The CRTC will be set up for this mode,
154 * with the panel scaling set up to source from the H/VDisplay
155 * of the original mode.
157 if (intel_dvo
->panel_fixed_mode
!= NULL
) {
158 #define C(x) adjusted_mode->x = intel_dvo->panel_fixed_mode->x
171 if (intel_dvo
->dev
.dev_ops
->mode_fixup
)
172 return intel_dvo
->dev
.dev_ops
->mode_fixup(&intel_dvo
->dev
, mode
, adjusted_mode
);
177 static void intel_dvo_mode_set(struct drm_encoder
*encoder
,
178 struct drm_display_mode
*mode
,
179 struct drm_display_mode
*adjusted_mode
)
181 struct drm_device
*dev
= encoder
->dev
;
182 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
183 struct intel_crtc
*intel_crtc
= to_intel_crtc(encoder
->crtc
);
184 struct intel_dvo
*intel_dvo
= enc_to_intel_dvo(encoder
);
185 int pipe
= intel_crtc
->pipe
;
187 u32 dvo_reg
= intel_dvo
->dev
.dvo_reg
, dvo_srcdim_reg
;
188 int dpll_reg
= DPLL(pipe
);
193 dvo_srcdim_reg
= DVOA_SRCDIM
;
196 dvo_srcdim_reg
= DVOB_SRCDIM
;
199 dvo_srcdim_reg
= DVOC_SRCDIM
;
203 intel_dvo
->dev
.dev_ops
->mode_set(&intel_dvo
->dev
, mode
, adjusted_mode
);
205 /* Save the data order, since I don't know what it should be set to. */
206 dvo_val
= I915_READ(dvo_reg
) &
207 (DVO_PRESERVE_MASK
| DVO_DATA_ORDER_GBRG
);
208 dvo_val
|= DVO_DATA_ORDER_FP
| DVO_BORDER_ENABLE
|
209 DVO_BLANK_ACTIVE_HIGH
;
212 dvo_val
|= DVO_PIPE_B_SELECT
;
213 dvo_val
|= DVO_PIPE_STALL
;
214 if (adjusted_mode
->flags
& DRM_MODE_FLAG_PHSYNC
)
215 dvo_val
|= DVO_HSYNC_ACTIVE_HIGH
;
216 if (adjusted_mode
->flags
& DRM_MODE_FLAG_PVSYNC
)
217 dvo_val
|= DVO_VSYNC_ACTIVE_HIGH
;
219 I915_WRITE(dpll_reg
, I915_READ(dpll_reg
) | DPLL_DVO_HIGH_SPEED
);
221 /*I915_WRITE(DVOB_SRCDIM,
222 (adjusted_mode->hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) |
223 (adjusted_mode->VDisplay << DVO_SRCDIM_VERTICAL_SHIFT));*/
224 I915_WRITE(dvo_srcdim_reg
,
225 (adjusted_mode
->hdisplay
<< DVO_SRCDIM_HORIZONTAL_SHIFT
) |
226 (adjusted_mode
->vdisplay
<< DVO_SRCDIM_VERTICAL_SHIFT
));
227 /*I915_WRITE(DVOB, dvo_val);*/
228 I915_WRITE(dvo_reg
, dvo_val
);
232 * Detect the output connection on our DVO device.
236 static enum drm_connector_status
237 intel_dvo_detect(struct drm_connector
*connector
, bool force
)
239 struct intel_dvo
*intel_dvo
= intel_attached_dvo(connector
);
240 return intel_dvo
->dev
.dev_ops
->detect(&intel_dvo
->dev
);
243 static int intel_dvo_get_modes(struct drm_connector
*connector
)
245 struct intel_dvo
*intel_dvo
= intel_attached_dvo(connector
);
246 struct drm_i915_private
*dev_priv
= connector
->dev
->dev_private
;
248 /* We should probably have an i2c driver get_modes function for those
249 * devices which will have a fixed set of modes determined by the chip
250 * (TV-out, for example), but for now with just TMDS and LVDS,
251 * that's not the case.
253 intel_ddc_get_modes(connector
,
254 intel_gmbus_get_adapter(dev_priv
, GMBUS_PORT_DPC
));
255 if (!list_empty(&connector
->probed_modes
))
258 if (intel_dvo
->panel_fixed_mode
!= NULL
) {
259 struct drm_display_mode
*mode
;
260 mode
= drm_mode_duplicate(connector
->dev
, intel_dvo
->panel_fixed_mode
);
262 drm_mode_probed_add(connector
, mode
);
270 static void intel_dvo_destroy(struct drm_connector
*connector
)
272 drm_sysfs_connector_remove(connector
);
273 drm_connector_cleanup(connector
);
277 static const struct drm_encoder_helper_funcs intel_dvo_helper_funcs
= {
278 .dpms
= intel_dvo_dpms
,
279 .mode_fixup
= intel_dvo_mode_fixup
,
280 .prepare
= intel_encoder_prepare
,
281 .mode_set
= intel_dvo_mode_set
,
282 .commit
= intel_encoder_commit
,
285 static const struct drm_connector_funcs intel_dvo_connector_funcs
= {
286 .dpms
= drm_helper_connector_dpms
,
287 .detect
= intel_dvo_detect
,
288 .destroy
= intel_dvo_destroy
,
289 .fill_modes
= drm_helper_probe_single_connector_modes
,
292 static const struct drm_connector_helper_funcs intel_dvo_connector_helper_funcs
= {
293 .mode_valid
= intel_dvo_mode_valid
,
294 .get_modes
= intel_dvo_get_modes
,
295 .best_encoder
= intel_best_encoder
,
298 static void intel_dvo_enc_destroy(struct drm_encoder
*encoder
)
300 struct intel_dvo
*intel_dvo
= enc_to_intel_dvo(encoder
);
302 if (intel_dvo
->dev
.dev_ops
->destroy
)
303 intel_dvo
->dev
.dev_ops
->destroy(&intel_dvo
->dev
);
305 kfree(intel_dvo
->panel_fixed_mode
);
307 intel_encoder_destroy(encoder
);
310 static const struct drm_encoder_funcs intel_dvo_enc_funcs
= {
311 .destroy
= intel_dvo_enc_destroy
,
315 * Attempts to get a fixed panel timing for LVDS (currently only the i830).
317 * Other chips with DVO LVDS will need to extend this to deal with the LVDS
318 * chip being on DVOB/C and having multiple pipes.
320 static struct drm_display_mode
*
321 intel_dvo_get_current_mode(struct drm_connector
*connector
)
323 struct drm_device
*dev
= connector
->dev
;
324 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
325 struct intel_dvo
*intel_dvo
= intel_attached_dvo(connector
);
326 uint32_t dvo_val
= I915_READ(intel_dvo
->dev
.dvo_reg
);
327 struct drm_display_mode
*mode
= NULL
;
329 /* If the DVO port is active, that'll be the LVDS, so we can pull out
330 * its timings to get how the BIOS set up the panel.
332 if (dvo_val
& DVO_ENABLE
) {
333 struct drm_crtc
*crtc
;
334 int pipe
= (dvo_val
& DVO_PIPE_B_SELECT
) ? 1 : 0;
336 crtc
= intel_get_crtc_for_pipe(dev
, pipe
);
338 mode
= intel_crtc_mode_get(dev
, crtc
);
340 mode
->type
|= DRM_MODE_TYPE_PREFERRED
;
341 if (dvo_val
& DVO_HSYNC_ACTIVE_HIGH
)
342 mode
->flags
|= DRM_MODE_FLAG_PHSYNC
;
343 if (dvo_val
& DVO_VSYNC_ACTIVE_HIGH
)
344 mode
->flags
|= DRM_MODE_FLAG_PVSYNC
;
352 void intel_dvo_init(struct drm_device
*dev
)
354 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
355 struct intel_encoder
*intel_encoder
;
356 struct intel_dvo
*intel_dvo
;
357 struct intel_connector
*intel_connector
;
359 int encoder_type
= DRM_MODE_ENCODER_NONE
;
361 intel_dvo
= kzalloc(sizeof(struct intel_dvo
), GFP_KERNEL
);
365 intel_connector
= kzalloc(sizeof(struct intel_connector
), GFP_KERNEL
);
366 if (!intel_connector
) {
371 intel_encoder
= &intel_dvo
->base
;
372 drm_encoder_init(dev
, &intel_encoder
->base
,
373 &intel_dvo_enc_funcs
, encoder_type
);
375 /* Now, try to find a controller */
376 for (i
= 0; i
< ARRAY_SIZE(intel_dvo_devices
); i
++) {
377 struct drm_connector
*connector
= &intel_connector
->base
;
378 const struct intel_dvo_device
*dvo
= &intel_dvo_devices
[i
];
379 struct i2c_adapter
*i2c
;
382 /* Allow the I2C driver info to specify the GPIO to be used in
383 * special cases, but otherwise default to what's defined
386 if (intel_gmbus_is_port_valid(dvo
->gpio
))
388 else if (dvo
->type
== INTEL_DVO_CHIP_LVDS
)
389 gpio
= GMBUS_PORT_SSC
;
391 gpio
= GMBUS_PORT_DPB
;
393 /* Set up the I2C bus necessary for the chip we're probing.
394 * It appears that everything is on GPIOE except for panels
395 * on i830 laptops, which are on GPIOB (DVOA).
397 i2c
= intel_gmbus_get_adapter(dev_priv
, gpio
);
399 intel_dvo
->dev
= *dvo
;
400 if (!dvo
->dev_ops
->init(&intel_dvo
->dev
, i2c
))
403 intel_encoder
->type
= INTEL_OUTPUT_DVO
;
404 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1);
406 case INTEL_DVO_CHIP_TMDS
:
407 intel_encoder
->cloneable
= true;
408 drm_connector_init(dev
, connector
,
409 &intel_dvo_connector_funcs
,
410 DRM_MODE_CONNECTOR_DVII
);
411 encoder_type
= DRM_MODE_ENCODER_TMDS
;
413 case INTEL_DVO_CHIP_LVDS
:
414 intel_encoder
->cloneable
= false;
415 drm_connector_init(dev
, connector
,
416 &intel_dvo_connector_funcs
,
417 DRM_MODE_CONNECTOR_LVDS
);
418 encoder_type
= DRM_MODE_ENCODER_LVDS
;
422 drm_connector_helper_add(connector
,
423 &intel_dvo_connector_helper_funcs
);
424 connector
->display_info
.subpixel_order
= SubPixelHorizontalRGB
;
425 connector
->interlace_allowed
= false;
426 connector
->doublescan_allowed
= false;
428 drm_encoder_helper_add(&intel_encoder
->base
,
429 &intel_dvo_helper_funcs
);
431 intel_connector_attach_encoder(intel_connector
, intel_encoder
);
432 if (dvo
->type
== INTEL_DVO_CHIP_LVDS
) {
433 /* For our LVDS chipsets, we should hopefully be able
434 * to dig the fixed panel mode out of the BIOS data.
435 * However, it's in a different format from the BIOS
436 * data on chipsets with integrated LVDS (stored in AIM
437 * headers, likely), so for now, just get the current
438 * mode being output through DVO.
440 intel_dvo
->panel_fixed_mode
=
441 intel_dvo_get_current_mode(connector
);
442 intel_dvo
->panel_wants_dither
= true;
445 drm_sysfs_connector_add(connector
);
449 drm_encoder_cleanup(&intel_encoder
->base
);
451 kfree(intel_connector
);