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
41 static const struct intel_dvo_device intel_dvo_devices
[] = {
43 .type
= INTEL_DVO_CHIP_TMDS
,
46 .slave_addr
= SIL164_ADDR
,
47 .dev_ops
= &sil164_ops
,
50 .type
= INTEL_DVO_CHIP_TMDS
,
53 .slave_addr
= CH7xxx_ADDR
,
54 .dev_ops
= &ch7xxx_ops
,
57 .type
= INTEL_DVO_CHIP_LVDS
,
60 .slave_addr
= 0x02, /* Might also be 0x44, 0x84, 0xc4 */
64 .type
= INTEL_DVO_CHIP_TMDS
,
67 .slave_addr
= TFP410_ADDR
,
68 .dev_ops
= &tfp410_ops
,
71 .type
= INTEL_DVO_CHIP_LVDS
,
76 .dev_ops
= &ch7017_ops
,
81 struct intel_encoder base
;
83 struct intel_dvo_device dev
;
85 struct drm_display_mode
*panel_fixed_mode
;
86 bool panel_wants_dither
;
89 static struct intel_dvo
*enc_to_intel_dvo(struct drm_encoder
*encoder
)
91 return container_of(encoder
, struct intel_dvo
, base
.base
);
94 static struct intel_dvo
*intel_attached_dvo(struct drm_connector
*connector
)
96 return container_of(intel_attached_encoder(connector
),
97 struct intel_dvo
, base
);
100 static void intel_dvo_dpms(struct drm_encoder
*encoder
, int mode
)
102 struct drm_i915_private
*dev_priv
= encoder
->dev
->dev_private
;
103 struct intel_dvo
*intel_dvo
= enc_to_intel_dvo(encoder
);
104 u32 dvo_reg
= intel_dvo
->dev
.dvo_reg
;
105 u32 temp
= I915_READ(dvo_reg
);
107 if (mode
== DRM_MODE_DPMS_ON
) {
108 I915_WRITE(dvo_reg
, temp
| DVO_ENABLE
);
110 intel_dvo
->dev
.dev_ops
->dpms(&intel_dvo
->dev
, mode
);
112 intel_dvo
->dev
.dev_ops
->dpms(&intel_dvo
->dev
, mode
);
113 I915_WRITE(dvo_reg
, temp
& ~DVO_ENABLE
);
118 static int intel_dvo_mode_valid(struct drm_connector
*connector
,
119 struct drm_display_mode
*mode
)
121 struct intel_dvo
*intel_dvo
= intel_attached_dvo(connector
);
123 if (mode
->flags
& DRM_MODE_FLAG_DBLSCAN
)
124 return MODE_NO_DBLESCAN
;
126 /* XXX: Validate clock range */
128 if (intel_dvo
->panel_fixed_mode
) {
129 if (mode
->hdisplay
> intel_dvo
->panel_fixed_mode
->hdisplay
)
131 if (mode
->vdisplay
> intel_dvo
->panel_fixed_mode
->vdisplay
)
135 return intel_dvo
->dev
.dev_ops
->mode_valid(&intel_dvo
->dev
, mode
);
138 static bool intel_dvo_mode_fixup(struct drm_encoder
*encoder
,
139 struct drm_display_mode
*mode
,
140 struct drm_display_mode
*adjusted_mode
)
142 struct intel_dvo
*intel_dvo
= enc_to_intel_dvo(encoder
);
144 /* If we have timings from the BIOS for the panel, put them in
145 * to the adjusted mode. The CRTC will be set up for this mode,
146 * with the panel scaling set up to source from the H/VDisplay
147 * of the original mode.
149 if (intel_dvo
->panel_fixed_mode
!= NULL
) {
150 #define C(x) adjusted_mode->x = intel_dvo->panel_fixed_mode->x
160 drm_mode_set_crtcinfo(adjusted_mode
, CRTC_INTERLACE_HALVE_V
);
164 if (intel_dvo
->dev
.dev_ops
->mode_fixup
)
165 return intel_dvo
->dev
.dev_ops
->mode_fixup(&intel_dvo
->dev
, mode
, adjusted_mode
);
170 static void intel_dvo_mode_set(struct drm_encoder
*encoder
,
171 struct drm_display_mode
*mode
,
172 struct drm_display_mode
*adjusted_mode
)
174 struct drm_device
*dev
= encoder
->dev
;
175 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
176 struct intel_crtc
*intel_crtc
= to_intel_crtc(encoder
->crtc
);
177 struct intel_dvo
*intel_dvo
= enc_to_intel_dvo(encoder
);
178 int pipe
= intel_crtc
->pipe
;
180 u32 dvo_reg
= intel_dvo
->dev
.dvo_reg
, dvo_srcdim_reg
;
181 int dpll_reg
= (pipe
== 0) ? DPLL_A
: DPLL_B
;
186 dvo_srcdim_reg
= DVOA_SRCDIM
;
189 dvo_srcdim_reg
= DVOB_SRCDIM
;
192 dvo_srcdim_reg
= DVOC_SRCDIM
;
196 intel_dvo
->dev
.dev_ops
->mode_set(&intel_dvo
->dev
, mode
, adjusted_mode
);
198 /* Save the data order, since I don't know what it should be set to. */
199 dvo_val
= I915_READ(dvo_reg
) &
200 (DVO_PRESERVE_MASK
| DVO_DATA_ORDER_GBRG
);
201 dvo_val
|= DVO_DATA_ORDER_FP
| DVO_BORDER_ENABLE
|
202 DVO_BLANK_ACTIVE_HIGH
;
205 dvo_val
|= DVO_PIPE_B_SELECT
;
206 dvo_val
|= DVO_PIPE_STALL
;
207 if (adjusted_mode
->flags
& DRM_MODE_FLAG_PHSYNC
)
208 dvo_val
|= DVO_HSYNC_ACTIVE_HIGH
;
209 if (adjusted_mode
->flags
& DRM_MODE_FLAG_PVSYNC
)
210 dvo_val
|= DVO_VSYNC_ACTIVE_HIGH
;
212 I915_WRITE(dpll_reg
, I915_READ(dpll_reg
) | DPLL_DVO_HIGH_SPEED
);
214 /*I915_WRITE(DVOB_SRCDIM,
215 (adjusted_mode->hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) |
216 (adjusted_mode->VDisplay << DVO_SRCDIM_VERTICAL_SHIFT));*/
217 I915_WRITE(dvo_srcdim_reg
,
218 (adjusted_mode
->hdisplay
<< DVO_SRCDIM_HORIZONTAL_SHIFT
) |
219 (adjusted_mode
->vdisplay
<< DVO_SRCDIM_VERTICAL_SHIFT
));
220 /*I915_WRITE(DVOB, dvo_val);*/
221 I915_WRITE(dvo_reg
, dvo_val
);
225 * Detect the output connection on our DVO device.
229 static enum drm_connector_status
intel_dvo_detect(struct drm_connector
*connector
)
231 struct intel_dvo
*intel_dvo
= intel_attached_dvo(connector
);
232 return intel_dvo
->dev
.dev_ops
->detect(&intel_dvo
->dev
);
235 static int intel_dvo_get_modes(struct drm_connector
*connector
)
237 struct intel_dvo
*intel_dvo
= intel_attached_dvo(connector
);
239 /* We should probably have an i2c driver get_modes function for those
240 * devices which will have a fixed set of modes determined by the chip
241 * (TV-out, for example), but for now with just TMDS and LVDS,
242 * that's not the case.
244 intel_ddc_get_modes(connector
, intel_dvo
->base
.ddc_bus
);
245 if (!list_empty(&connector
->probed_modes
))
248 if (intel_dvo
->panel_fixed_mode
!= NULL
) {
249 struct drm_display_mode
*mode
;
250 mode
= drm_mode_duplicate(connector
->dev
, intel_dvo
->panel_fixed_mode
);
252 drm_mode_probed_add(connector
, mode
);
260 static void intel_dvo_destroy(struct drm_connector
*connector
)
262 drm_sysfs_connector_remove(connector
);
263 drm_connector_cleanup(connector
);
267 static const struct drm_encoder_helper_funcs intel_dvo_helper_funcs
= {
268 .dpms
= intel_dvo_dpms
,
269 .mode_fixup
= intel_dvo_mode_fixup
,
270 .prepare
= intel_encoder_prepare
,
271 .mode_set
= intel_dvo_mode_set
,
272 .commit
= intel_encoder_commit
,
275 static const struct drm_connector_funcs intel_dvo_connector_funcs
= {
276 .dpms
= drm_helper_connector_dpms
,
277 .detect
= intel_dvo_detect
,
278 .destroy
= intel_dvo_destroy
,
279 .fill_modes
= drm_helper_probe_single_connector_modes
,
282 static const struct drm_connector_helper_funcs intel_dvo_connector_helper_funcs
= {
283 .mode_valid
= intel_dvo_mode_valid
,
284 .get_modes
= intel_dvo_get_modes
,
285 .best_encoder
= intel_best_encoder
,
288 static void intel_dvo_enc_destroy(struct drm_encoder
*encoder
)
290 struct intel_dvo
*intel_dvo
= enc_to_intel_dvo(encoder
);
292 if (intel_dvo
->dev
.dev_ops
->destroy
)
293 intel_dvo
->dev
.dev_ops
->destroy(&intel_dvo
->dev
);
295 kfree(intel_dvo
->panel_fixed_mode
);
297 intel_encoder_destroy(encoder
);
300 static const struct drm_encoder_funcs intel_dvo_enc_funcs
= {
301 .destroy
= intel_dvo_enc_destroy
,
305 * Attempts to get a fixed panel timing for LVDS (currently only the i830).
307 * Other chips with DVO LVDS will need to extend this to deal with the LVDS
308 * chip being on DVOB/C and having multiple pipes.
310 static struct drm_display_mode
*
311 intel_dvo_get_current_mode(struct drm_connector
*connector
)
313 struct drm_device
*dev
= connector
->dev
;
314 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
315 struct intel_dvo
*intel_dvo
= intel_attached_dvo(connector
);
316 uint32_t dvo_val
= I915_READ(intel_dvo
->dev
.dvo_reg
);
317 struct drm_display_mode
*mode
= NULL
;
319 /* If the DVO port is active, that'll be the LVDS, so we can pull out
320 * its timings to get how the BIOS set up the panel.
322 if (dvo_val
& DVO_ENABLE
) {
323 struct drm_crtc
*crtc
;
324 int pipe
= (dvo_val
& DVO_PIPE_B_SELECT
) ? 1 : 0;
326 crtc
= intel_get_crtc_for_pipe(dev
, pipe
);
328 mode
= intel_crtc_mode_get(dev
, crtc
);
330 mode
->type
|= DRM_MODE_TYPE_PREFERRED
;
331 if (dvo_val
& DVO_HSYNC_ACTIVE_HIGH
)
332 mode
->flags
|= DRM_MODE_FLAG_PHSYNC
;
333 if (dvo_val
& DVO_VSYNC_ACTIVE_HIGH
)
334 mode
->flags
|= DRM_MODE_FLAG_PVSYNC
;
342 void intel_dvo_init(struct drm_device
*dev
)
344 struct intel_encoder
*intel_encoder
;
345 struct intel_dvo
*intel_dvo
;
346 struct intel_connector
*intel_connector
;
347 struct i2c_adapter
*i2cbus
= NULL
;
350 int encoder_type
= DRM_MODE_ENCODER_NONE
;
352 intel_dvo
= kzalloc(sizeof(struct intel_dvo
), GFP_KERNEL
);
356 intel_connector
= kzalloc(sizeof(struct intel_connector
), GFP_KERNEL
);
357 if (!intel_connector
) {
362 intel_encoder
= &intel_dvo
->base
;
364 /* Set up the DDC bus */
365 intel_encoder
->ddc_bus
= intel_i2c_create(dev
, GPIOD
, "DVODDC_D");
366 if (!intel_encoder
->ddc_bus
)
369 /* Now, try to find a controller */
370 for (i
= 0; i
< ARRAY_SIZE(intel_dvo_devices
); i
++) {
371 struct drm_connector
*connector
= &intel_connector
->base
;
372 const struct intel_dvo_device
*dvo
= &intel_dvo_devices
[i
];
375 /* Allow the I2C driver info to specify the GPIO to be used in
376 * special cases, but otherwise default to what's defined
381 else if (dvo
->type
== INTEL_DVO_CHIP_LVDS
)
386 /* Set up the I2C bus necessary for the chip we're probing.
387 * It appears that everything is on GPIOE except for panels
388 * on i830 laptops, which are on GPIOB (DVOA).
391 intel_i2c_destroy(i2cbus
);
392 if (!(i2cbus
= intel_i2c_create(dev
, gpio
,
393 gpio
== GPIOB
? "DVOI2C_B" : "DVOI2C_E"))) {
397 intel_dvo
->dev
= *dvo
;
398 ret
= dvo
->dev_ops
->init(&intel_dvo
->dev
, i2cbus
);
402 intel_encoder
->type
= INTEL_OUTPUT_DVO
;
403 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1);
405 case INTEL_DVO_CHIP_TMDS
:
406 intel_encoder
->clone_mask
=
407 (1 << INTEL_DVO_TMDS_CLONE_BIT
) |
408 (1 << INTEL_ANALOG_CLONE_BIT
);
409 drm_connector_init(dev
, connector
,
410 &intel_dvo_connector_funcs
,
411 DRM_MODE_CONNECTOR_DVII
);
412 encoder_type
= DRM_MODE_ENCODER_TMDS
;
414 case INTEL_DVO_CHIP_LVDS
:
415 intel_encoder
->clone_mask
=
416 (1 << INTEL_DVO_LVDS_CLONE_BIT
);
417 drm_connector_init(dev
, connector
,
418 &intel_dvo_connector_funcs
,
419 DRM_MODE_CONNECTOR_LVDS
);
420 encoder_type
= DRM_MODE_ENCODER_LVDS
;
424 drm_connector_helper_add(connector
,
425 &intel_dvo_connector_helper_funcs
);
426 connector
->display_info
.subpixel_order
= SubPixelHorizontalRGB
;
427 connector
->interlace_allowed
= false;
428 connector
->doublescan_allowed
= false;
430 drm_encoder_init(dev
, &intel_encoder
->base
,
431 &intel_dvo_enc_funcs
, encoder_type
);
432 drm_encoder_helper_add(&intel_encoder
->base
,
433 &intel_dvo_helper_funcs
);
435 intel_connector_attach_encoder(intel_connector
, intel_encoder
);
436 if (dvo
->type
== INTEL_DVO_CHIP_LVDS
) {
437 /* For our LVDS chipsets, we should hopefully be able
438 * to dig the fixed panel mode out of the BIOS data.
439 * However, it's in a different format from the BIOS
440 * data on chipsets with integrated LVDS (stored in AIM
441 * headers, likely), so for now, just get the current
442 * mode being output through DVO.
444 intel_dvo
->panel_fixed_mode
=
445 intel_dvo_get_current_mode(connector
);
446 intel_dvo
->panel_wants_dither
= true;
449 drm_sysfs_connector_add(connector
);
453 intel_i2c_destroy(intel_encoder
->ddc_bus
);
454 /* Didn't find a chip, so tear down. */
456 intel_i2c_destroy(i2cbus
);
459 kfree(intel_connector
);