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>
30 #include <drm/drm_crtc.h>
31 #include "intel_drv.h"
32 #include <drm/i915_drm.h>
36 #define SIL164_ADDR 0x38
37 #define CH7xxx_ADDR 0x76
38 #define TFP410_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_LVDS
,
59 .slave_addr
= 0x02, /* Might also be 0x44, 0x84, 0xc4 */
63 .type
= INTEL_DVO_CHIP_TMDS
,
66 .slave_addr
= TFP410_ADDR
,
67 .dev_ops
= &tfp410_ops
,
70 .type
= INTEL_DVO_CHIP_LVDS
,
74 .gpio
= GMBUS_PORT_DPB
,
75 .dev_ops
= &ch7017_ops
,
80 struct intel_encoder base
;
82 struct intel_dvo_device dev
;
84 struct drm_display_mode
*panel_fixed_mode
;
85 bool panel_wants_dither
;
88 static struct intel_dvo
*enc_to_intel_dvo(struct drm_encoder
*encoder
)
90 return container_of(encoder
, struct intel_dvo
, base
.base
);
93 static struct intel_dvo
*intel_attached_dvo(struct drm_connector
*connector
)
95 return container_of(intel_attached_encoder(connector
),
96 struct intel_dvo
, base
);
99 static void intel_dvo_dpms(struct drm_encoder
*encoder
, int mode
)
101 struct drm_i915_private
*dev_priv
= encoder
->dev
->dev_private
;
102 struct intel_dvo
*intel_dvo
= enc_to_intel_dvo(encoder
);
103 u32 dvo_reg
= intel_dvo
->dev
.dvo_reg
;
104 u32 temp
= I915_READ(dvo_reg
);
106 if (mode
== DRM_MODE_DPMS_ON
) {
107 I915_WRITE(dvo_reg
, temp
| DVO_ENABLE
);
109 intel_dvo
->dev
.dev_ops
->dpms(&intel_dvo
->dev
, mode
);
111 intel_dvo
->dev
.dev_ops
->dpms(&intel_dvo
->dev
, mode
);
112 I915_WRITE(dvo_reg
, temp
& ~DVO_ENABLE
);
117 static int intel_dvo_mode_valid(struct drm_connector
*connector
,
118 struct drm_display_mode
*mode
)
120 struct intel_dvo
*intel_dvo
= intel_attached_dvo(connector
);
122 if (mode
->flags
& DRM_MODE_FLAG_DBLSCAN
)
123 return MODE_NO_DBLESCAN
;
125 /* XXX: Validate clock range */
127 if (intel_dvo
->panel_fixed_mode
) {
128 if (mode
->hdisplay
> intel_dvo
->panel_fixed_mode
->hdisplay
)
130 if (mode
->vdisplay
> intel_dvo
->panel_fixed_mode
->vdisplay
)
134 return intel_dvo
->dev
.dev_ops
->mode_valid(&intel_dvo
->dev
, mode
);
137 static bool intel_dvo_mode_fixup(struct drm_encoder
*encoder
,
138 const struct drm_display_mode
*mode
,
139 struct drm_display_mode
*adjusted_mode
)
141 struct intel_dvo
*intel_dvo
= enc_to_intel_dvo(encoder
);
143 /* If we have timings from the BIOS for the panel, put them in
144 * to the adjusted mode. The CRTC will be set up for this mode,
145 * with the panel scaling set up to source from the H/VDisplay
146 * of the original mode.
148 if (intel_dvo
->panel_fixed_mode
!= NULL
) {
149 #define C(x) adjusted_mode->x = intel_dvo->panel_fixed_mode->x
162 if (intel_dvo
->dev
.dev_ops
->mode_fixup
)
163 return intel_dvo
->dev
.dev_ops
->mode_fixup(&intel_dvo
->dev
, mode
, adjusted_mode
);
168 static void intel_dvo_mode_set(struct drm_encoder
*encoder
,
169 struct drm_display_mode
*mode
,
170 struct drm_display_mode
*adjusted_mode
)
172 struct drm_device
*dev
= encoder
->dev
;
173 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
174 struct intel_crtc
*intel_crtc
= to_intel_crtc(encoder
->crtc
);
175 struct intel_dvo
*intel_dvo
= enc_to_intel_dvo(encoder
);
176 int pipe
= intel_crtc
->pipe
;
178 u32 dvo_reg
= intel_dvo
->dev
.dvo_reg
, dvo_srcdim_reg
;
179 int dpll_reg
= DPLL(pipe
);
184 dvo_srcdim_reg
= DVOA_SRCDIM
;
187 dvo_srcdim_reg
= DVOB_SRCDIM
;
190 dvo_srcdim_reg
= DVOC_SRCDIM
;
194 intel_dvo
->dev
.dev_ops
->mode_set(&intel_dvo
->dev
, mode
, adjusted_mode
);
196 /* Save the data order, since I don't know what it should be set to. */
197 dvo_val
= I915_READ(dvo_reg
) &
198 (DVO_PRESERVE_MASK
| DVO_DATA_ORDER_GBRG
);
199 dvo_val
|= DVO_DATA_ORDER_FP
| DVO_BORDER_ENABLE
|
200 DVO_BLANK_ACTIVE_HIGH
;
203 dvo_val
|= DVO_PIPE_B_SELECT
;
204 dvo_val
|= DVO_PIPE_STALL
;
205 if (adjusted_mode
->flags
& DRM_MODE_FLAG_PHSYNC
)
206 dvo_val
|= DVO_HSYNC_ACTIVE_HIGH
;
207 if (adjusted_mode
->flags
& DRM_MODE_FLAG_PVSYNC
)
208 dvo_val
|= DVO_VSYNC_ACTIVE_HIGH
;
210 I915_WRITE(dpll_reg
, I915_READ(dpll_reg
) | DPLL_DVO_HIGH_SPEED
);
212 /*I915_WRITE(DVOB_SRCDIM,
213 (adjusted_mode->hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) |
214 (adjusted_mode->VDisplay << DVO_SRCDIM_VERTICAL_SHIFT));*/
215 I915_WRITE(dvo_srcdim_reg
,
216 (adjusted_mode
->hdisplay
<< DVO_SRCDIM_HORIZONTAL_SHIFT
) |
217 (adjusted_mode
->vdisplay
<< DVO_SRCDIM_VERTICAL_SHIFT
));
218 /*I915_WRITE(DVOB, dvo_val);*/
219 I915_WRITE(dvo_reg
, dvo_val
);
223 * Detect the output connection on our DVO device.
227 static enum drm_connector_status
228 intel_dvo_detect(struct drm_connector
*connector
, bool force
)
230 struct intel_dvo
*intel_dvo
= intel_attached_dvo(connector
);
231 return intel_dvo
->dev
.dev_ops
->detect(&intel_dvo
->dev
);
234 static int intel_dvo_get_modes(struct drm_connector
*connector
)
236 struct intel_dvo
*intel_dvo
= intel_attached_dvo(connector
);
237 struct drm_i915_private
*dev_priv
= connector
->dev
->dev_private
;
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
,
245 intel_gmbus_get_adapter(dev_priv
, GMBUS_PORT_DPC
));
246 if (!list_empty(&connector
->probed_modes
))
249 if (intel_dvo
->panel_fixed_mode
!= NULL
) {
250 struct drm_display_mode
*mode
;
251 mode
= drm_mode_duplicate(connector
->dev
, intel_dvo
->panel_fixed_mode
);
253 drm_mode_probed_add(connector
, mode
);
261 static void intel_dvo_destroy(struct drm_connector
*connector
)
263 drm_sysfs_connector_remove(connector
);
264 drm_connector_cleanup(connector
);
268 static const struct drm_encoder_helper_funcs intel_dvo_helper_funcs
= {
269 .dpms
= intel_dvo_dpms
,
270 .mode_fixup
= intel_dvo_mode_fixup
,
271 .prepare
= intel_encoder_prepare
,
272 .mode_set
= intel_dvo_mode_set
,
273 .commit
= intel_encoder_commit
,
276 static const struct drm_connector_funcs intel_dvo_connector_funcs
= {
277 .dpms
= drm_helper_connector_dpms
,
278 .detect
= intel_dvo_detect
,
279 .destroy
= intel_dvo_destroy
,
280 .fill_modes
= drm_helper_probe_single_connector_modes
,
283 static const struct drm_connector_helper_funcs intel_dvo_connector_helper_funcs
= {
284 .mode_valid
= intel_dvo_mode_valid
,
285 .get_modes
= intel_dvo_get_modes
,
286 .best_encoder
= intel_best_encoder
,
289 static void intel_dvo_enc_destroy(struct drm_encoder
*encoder
)
291 struct intel_dvo
*intel_dvo
= enc_to_intel_dvo(encoder
);
293 if (intel_dvo
->dev
.dev_ops
->destroy
)
294 intel_dvo
->dev
.dev_ops
->destroy(&intel_dvo
->dev
);
296 kfree(intel_dvo
->panel_fixed_mode
);
298 intel_encoder_destroy(encoder
);
301 static const struct drm_encoder_funcs intel_dvo_enc_funcs
= {
302 .destroy
= intel_dvo_enc_destroy
,
306 * Attempts to get a fixed panel timing for LVDS (currently only the i830).
308 * Other chips with DVO LVDS will need to extend this to deal with the LVDS
309 * chip being on DVOB/C and having multiple pipes.
311 static struct drm_display_mode
*
312 intel_dvo_get_current_mode(struct drm_connector
*connector
)
314 struct drm_device
*dev
= connector
->dev
;
315 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
316 struct intel_dvo
*intel_dvo
= intel_attached_dvo(connector
);
317 uint32_t dvo_val
= I915_READ(intel_dvo
->dev
.dvo_reg
);
318 struct drm_display_mode
*mode
= NULL
;
320 /* If the DVO port is active, that'll be the LVDS, so we can pull out
321 * its timings to get how the BIOS set up the panel.
323 if (dvo_val
& DVO_ENABLE
) {
324 struct drm_crtc
*crtc
;
325 int pipe
= (dvo_val
& DVO_PIPE_B_SELECT
) ? 1 : 0;
327 crtc
= intel_get_crtc_for_pipe(dev
, pipe
);
329 mode
= intel_crtc_mode_get(dev
, crtc
);
331 mode
->type
|= DRM_MODE_TYPE_PREFERRED
;
332 if (dvo_val
& DVO_HSYNC_ACTIVE_HIGH
)
333 mode
->flags
|= DRM_MODE_FLAG_PHSYNC
;
334 if (dvo_val
& DVO_VSYNC_ACTIVE_HIGH
)
335 mode
->flags
|= DRM_MODE_FLAG_PVSYNC
;
343 void intel_dvo_init(struct drm_device
*dev
)
345 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
346 struct intel_encoder
*intel_encoder
;
347 struct intel_dvo
*intel_dvo
;
348 struct intel_connector
*intel_connector
;
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
;
363 drm_encoder_init(dev
, &intel_encoder
->base
,
364 &intel_dvo_enc_funcs
, encoder_type
);
366 /* Now, try to find a controller */
367 for (i
= 0; i
< ARRAY_SIZE(intel_dvo_devices
); i
++) {
368 struct drm_connector
*connector
= &intel_connector
->base
;
369 const struct intel_dvo_device
*dvo
= &intel_dvo_devices
[i
];
370 struct i2c_adapter
*i2c
;
373 /* Allow the I2C driver info to specify the GPIO to be used in
374 * special cases, but otherwise default to what's defined
377 if (intel_gmbus_is_port_valid(dvo
->gpio
))
379 else if (dvo
->type
== INTEL_DVO_CHIP_LVDS
)
380 gpio
= GMBUS_PORT_SSC
;
382 gpio
= GMBUS_PORT_DPB
;
384 /* Set up the I2C bus necessary for the chip we're probing.
385 * It appears that everything is on GPIOE except for panels
386 * on i830 laptops, which are on GPIOB (DVOA).
388 i2c
= intel_gmbus_get_adapter(dev_priv
, gpio
);
390 intel_dvo
->dev
= *dvo
;
391 if (!dvo
->dev_ops
->init(&intel_dvo
->dev
, i2c
))
394 intel_encoder
->type
= INTEL_OUTPUT_DVO
;
395 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1);
397 case INTEL_DVO_CHIP_TMDS
:
398 intel_encoder
->clone_mask
=
399 (1 << INTEL_DVO_TMDS_CLONE_BIT
) |
400 (1 << INTEL_ANALOG_CLONE_BIT
);
401 drm_connector_init(dev
, connector
,
402 &intel_dvo_connector_funcs
,
403 DRM_MODE_CONNECTOR_DVII
);
404 encoder_type
= DRM_MODE_ENCODER_TMDS
;
406 case INTEL_DVO_CHIP_LVDS
:
407 intel_encoder
->clone_mask
=
408 (1 << INTEL_DVO_LVDS_CLONE_BIT
);
409 drm_connector_init(dev
, connector
,
410 &intel_dvo_connector_funcs
,
411 DRM_MODE_CONNECTOR_LVDS
);
412 encoder_type
= DRM_MODE_ENCODER_LVDS
;
416 drm_connector_helper_add(connector
,
417 &intel_dvo_connector_helper_funcs
);
418 connector
->display_info
.subpixel_order
= SubPixelHorizontalRGB
;
419 connector
->interlace_allowed
= false;
420 connector
->doublescan_allowed
= false;
422 drm_encoder_helper_add(&intel_encoder
->base
,
423 &intel_dvo_helper_funcs
);
425 intel_connector_attach_encoder(intel_connector
, intel_encoder
);
426 if (dvo
->type
== INTEL_DVO_CHIP_LVDS
) {
427 /* For our LVDS chipsets, we should hopefully be able
428 * to dig the fixed panel mode out of the BIOS data.
429 * However, it's in a different format from the BIOS
430 * data on chipsets with integrated LVDS (stored in AIM
431 * headers, likely), so for now, just get the current
432 * mode being output through DVO.
434 intel_dvo
->panel_fixed_mode
=
435 intel_dvo_get_current_mode(connector
);
436 intel_dvo
->panel_wants_dither
= true;
439 drm_sysfs_connector_add(connector
);
443 drm_encoder_cleanup(&intel_encoder
->base
);
445 kfree(intel_connector
);