2 * Copyright © 2013 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
23 * Author: Jani Nikula <jani.nikula@intel.com>
27 #include <drm/drm_crtc.h>
28 #include <drm/drm_edid.h>
29 #include <drm/i915_drm.h>
30 #include <linux/slab.h>
32 #include "intel_drv.h"
33 #include "intel_dsi.h"
34 #include "intel_dsi_cmd.h"
36 /* the sub-encoders aka panel drivers */
37 static const struct intel_dsi_device intel_dsi_devices
[] = {
39 .panel_id
= MIPI_DSI_GENERIC_PANEL_ID
,
40 .name
= "vbt-generic-dsi-vid-mode-display",
41 .dev_ops
= &vbt_generic_dsi_display_ops
,
45 static void band_gap_reset(struct drm_i915_private
*dev_priv
)
47 mutex_lock(&dev_priv
->dpio_lock
);
49 vlv_flisdsi_write(dev_priv
, 0x08, 0x0001);
50 vlv_flisdsi_write(dev_priv
, 0x0F, 0x0005);
51 vlv_flisdsi_write(dev_priv
, 0x0F, 0x0025);
53 vlv_flisdsi_write(dev_priv
, 0x0F, 0x0000);
54 vlv_flisdsi_write(dev_priv
, 0x08, 0x0000);
56 mutex_unlock(&dev_priv
->dpio_lock
);
59 static struct intel_dsi
*intel_attached_dsi(struct drm_connector
*connector
)
61 return container_of(intel_attached_encoder(connector
),
62 struct intel_dsi
, base
);
65 static inline bool is_vid_mode(struct intel_dsi
*intel_dsi
)
67 return intel_dsi
->operation_mode
== INTEL_DSI_VIDEO_MODE
;
70 static inline bool is_cmd_mode(struct intel_dsi
*intel_dsi
)
72 return intel_dsi
->operation_mode
== INTEL_DSI_COMMAND_MODE
;
75 static void intel_dsi_hot_plug(struct intel_encoder
*encoder
)
80 static bool intel_dsi_compute_config(struct intel_encoder
*encoder
,
81 struct intel_crtc_config
*config
)
83 struct intel_dsi
*intel_dsi
= container_of(encoder
, struct intel_dsi
,
85 struct intel_connector
*intel_connector
= intel_dsi
->attached_connector
;
86 struct drm_display_mode
*fixed_mode
= intel_connector
->panel
.fixed_mode
;
87 struct drm_display_mode
*adjusted_mode
= &config
->adjusted_mode
;
88 struct drm_display_mode
*mode
= &config
->requested_mode
;
93 intel_fixed_panel_mode(fixed_mode
, adjusted_mode
);
95 if (intel_dsi
->dev
.dev_ops
->mode_fixup
)
96 return intel_dsi
->dev
.dev_ops
->mode_fixup(&intel_dsi
->dev
,
102 static void intel_dsi_device_ready(struct intel_encoder
*encoder
)
104 struct drm_i915_private
*dev_priv
= encoder
->base
.dev
->dev_private
;
105 struct intel_crtc
*intel_crtc
= to_intel_crtc(encoder
->base
.crtc
);
106 int pipe
= intel_crtc
->pipe
;
111 mutex_lock(&dev_priv
->dpio_lock
);
112 /* program rcomp for compliance, reduce from 50 ohms to 45 ohms
113 * needed everytime after power gate */
114 vlv_flisdsi_write(dev_priv
, 0x04, 0x0004);
115 mutex_unlock(&dev_priv
->dpio_lock
);
117 /* bandgap reset is needed after everytime we do power gate */
118 band_gap_reset(dev_priv
);
120 val
= I915_READ(MIPI_PORT_CTRL(pipe
));
121 I915_WRITE(MIPI_PORT_CTRL(pipe
), val
| LP_OUTPUT_HOLD
);
122 usleep_range(1000, 1500);
123 I915_WRITE(MIPI_DEVICE_READY(pipe
), DEVICE_READY
| ULPS_STATE_EXIT
);
124 usleep_range(2000, 2500);
125 I915_WRITE(MIPI_DEVICE_READY(pipe
), DEVICE_READY
);
126 usleep_range(2000, 2500);
127 I915_WRITE(MIPI_DEVICE_READY(pipe
), 0x00);
128 usleep_range(2000, 2500);
129 I915_WRITE(MIPI_DEVICE_READY(pipe
), DEVICE_READY
);
130 usleep_range(2000, 2500);
133 static void intel_dsi_enable(struct intel_encoder
*encoder
)
135 struct drm_device
*dev
= encoder
->base
.dev
;
136 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
137 struct intel_crtc
*intel_crtc
= to_intel_crtc(encoder
->base
.crtc
);
138 struct intel_dsi
*intel_dsi
= enc_to_intel_dsi(&encoder
->base
);
139 int pipe
= intel_crtc
->pipe
;
144 if (is_cmd_mode(intel_dsi
))
145 I915_WRITE(MIPI_MAX_RETURN_PKT_SIZE(pipe
), 8 * 4);
147 msleep(20); /* XXX */
148 dpi_send_cmd(intel_dsi
, TURN_ON
, DPI_LP_MODE_EN
);
151 if (intel_dsi
->dev
.dev_ops
->enable
)
152 intel_dsi
->dev
.dev_ops
->enable(&intel_dsi
->dev
);
154 /* assert ip_tg_enable signal */
155 temp
= I915_READ(MIPI_PORT_CTRL(pipe
)) & ~LANE_CONFIGURATION_MASK
;
156 temp
= temp
| intel_dsi
->port_bits
;
157 I915_WRITE(MIPI_PORT_CTRL(pipe
), temp
| DPI_ENABLE
);
158 POSTING_READ(MIPI_PORT_CTRL(pipe
));
162 static void intel_dsi_pre_enable(struct intel_encoder
*encoder
)
164 struct drm_device
*dev
= encoder
->base
.dev
;
165 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
166 struct intel_dsi
*intel_dsi
= enc_to_intel_dsi(&encoder
->base
);
167 struct intel_crtc
*intel_crtc
= to_intel_crtc(encoder
->base
.crtc
);
168 enum pipe pipe
= intel_crtc
->pipe
;
173 /* Disable DPOunit clock gating, can stall pipe
174 * and we need DPLL REFA always enabled */
175 tmp
= I915_READ(DPLL(pipe
));
176 tmp
|= DPLL_REFA_CLK_ENABLE_VLV
;
177 I915_WRITE(DPLL(pipe
), tmp
);
179 tmp
= I915_READ(DSPCLK_GATE_D
);
180 tmp
|= DPOUNIT_CLOCK_GATE_DISABLE
;
181 I915_WRITE(DSPCLK_GATE_D
, tmp
);
183 /* put device in ready state */
184 intel_dsi_device_ready(encoder
);
186 msleep(intel_dsi
->panel_on_delay
);
188 if (intel_dsi
->dev
.dev_ops
->panel_reset
)
189 intel_dsi
->dev
.dev_ops
->panel_reset(&intel_dsi
->dev
);
191 if (intel_dsi
->dev
.dev_ops
->send_otp_cmds
)
192 intel_dsi
->dev
.dev_ops
->send_otp_cmds(&intel_dsi
->dev
);
194 /* Enable port in pre-enable phase itself because as per hw team
195 * recommendation, port should be enabled befor plane & pipe */
196 intel_dsi_enable(encoder
);
199 static void intel_dsi_enable_nop(struct intel_encoder
*encoder
)
203 /* for DSI port enable has to be done before pipe
204 * and plane enable, so port enable is done in
205 * pre_enable phase itself unlike other encoders
209 static void intel_dsi_pre_disable(struct intel_encoder
*encoder
)
211 struct intel_dsi
*intel_dsi
= enc_to_intel_dsi(&encoder
->base
);
215 if (is_vid_mode(intel_dsi
)) {
216 /* Send Shutdown command to the panel in LP mode */
217 dpi_send_cmd(intel_dsi
, SHUTDOWN
, DPI_LP_MODE_EN
);
222 static void intel_dsi_disable(struct intel_encoder
*encoder
)
224 struct drm_device
*dev
= encoder
->base
.dev
;
225 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
226 struct intel_crtc
*intel_crtc
= to_intel_crtc(encoder
->base
.crtc
);
227 struct intel_dsi
*intel_dsi
= enc_to_intel_dsi(&encoder
->base
);
228 int pipe
= intel_crtc
->pipe
;
233 if (is_vid_mode(intel_dsi
)) {
234 /* de-assert ip_tg_enable signal */
235 temp
= I915_READ(MIPI_PORT_CTRL(pipe
));
236 I915_WRITE(MIPI_PORT_CTRL(pipe
), temp
& ~DPI_ENABLE
);
237 POSTING_READ(MIPI_PORT_CTRL(pipe
));
242 /* Panel commands can be sent when clock is in LP11 */
243 I915_WRITE(MIPI_DEVICE_READY(pipe
), 0x0);
245 temp
= I915_READ(MIPI_CTRL(pipe
));
246 temp
&= ~ESCAPE_CLOCK_DIVIDER_MASK
;
247 I915_WRITE(MIPI_CTRL(pipe
), temp
|
248 intel_dsi
->escape_clk_div
<<
249 ESCAPE_CLOCK_DIVIDER_SHIFT
);
251 I915_WRITE(MIPI_EOT_DISABLE(pipe
), CLOCKSTOP
);
253 temp
= I915_READ(MIPI_DSI_FUNC_PRG(pipe
));
254 temp
&= ~VID_MODE_FORMAT_MASK
;
255 I915_WRITE(MIPI_DSI_FUNC_PRG(pipe
), temp
);
257 I915_WRITE(MIPI_DEVICE_READY(pipe
), 0x1);
259 /* if disable packets are sent before sending shutdown packet then in
260 * some next enable sequence send turn on packet error is observed */
261 if (intel_dsi
->dev
.dev_ops
->disable
)
262 intel_dsi
->dev
.dev_ops
->disable(&intel_dsi
->dev
);
265 static void intel_dsi_clear_device_ready(struct intel_encoder
*encoder
)
267 struct drm_i915_private
*dev_priv
= encoder
->base
.dev
->dev_private
;
268 struct intel_crtc
*intel_crtc
= to_intel_crtc(encoder
->base
.crtc
);
269 int pipe
= intel_crtc
->pipe
;
274 I915_WRITE(MIPI_DEVICE_READY(pipe
), ULPS_STATE_ENTER
);
275 usleep_range(2000, 2500);
277 I915_WRITE(MIPI_DEVICE_READY(pipe
), ULPS_STATE_EXIT
);
278 usleep_range(2000, 2500);
280 I915_WRITE(MIPI_DEVICE_READY(pipe
), ULPS_STATE_ENTER
);
281 usleep_range(2000, 2500);
283 val
= I915_READ(MIPI_PORT_CTRL(pipe
));
284 I915_WRITE(MIPI_PORT_CTRL(pipe
), val
& ~LP_OUTPUT_HOLD
);
285 usleep_range(1000, 1500);
287 if (wait_for(((I915_READ(MIPI_PORT_CTRL(pipe
)) & AFE_LATCHOUT
)
289 DRM_ERROR("DSI LP not going Low\n");
291 I915_WRITE(MIPI_DEVICE_READY(pipe
), 0x00);
292 usleep_range(2000, 2500);
294 vlv_disable_dsi_pll(encoder
);
297 static void intel_dsi_post_disable(struct intel_encoder
*encoder
)
299 struct drm_i915_private
*dev_priv
= encoder
->base
.dev
->dev_private
;
300 struct intel_dsi
*intel_dsi
= enc_to_intel_dsi(&encoder
->base
);
305 intel_dsi_disable(encoder
);
307 intel_dsi_clear_device_ready(encoder
);
309 val
= I915_READ(DSPCLK_GATE_D
);
310 val
&= ~DPOUNIT_CLOCK_GATE_DISABLE
;
311 I915_WRITE(DSPCLK_GATE_D
, val
);
313 if (intel_dsi
->dev
.dev_ops
->disable_panel_power
)
314 intel_dsi
->dev
.dev_ops
->disable_panel_power(&intel_dsi
->dev
);
316 msleep(intel_dsi
->panel_off_delay
);
317 msleep(intel_dsi
->panel_pwr_cycle_delay
);
320 static bool intel_dsi_get_hw_state(struct intel_encoder
*encoder
,
323 struct drm_i915_private
*dev_priv
= encoder
->base
.dev
->dev_private
;
324 enum intel_display_power_domain power_domain
;
330 power_domain
= intel_display_port_power_domain(encoder
);
331 if (!intel_display_power_enabled(dev_priv
, power_domain
))
334 /* XXX: this only works for one DSI output */
335 for (p
= PIPE_A
; p
<= PIPE_B
; p
++) {
336 port
= I915_READ(MIPI_PORT_CTRL(p
));
337 func
= I915_READ(MIPI_DSI_FUNC_PRG(p
));
339 if ((port
& DPI_ENABLE
) || (func
& CMD_MODE_DATA_WIDTH_MASK
)) {
340 if (I915_READ(MIPI_DEVICE_READY(p
)) & DEVICE_READY
) {
350 static void intel_dsi_get_config(struct intel_encoder
*encoder
,
351 struct intel_crtc_config
*pipe_config
)
355 /* XXX: read flags, set to adjusted_mode */
358 static enum drm_mode_status
359 intel_dsi_mode_valid(struct drm_connector
*connector
,
360 struct drm_display_mode
*mode
)
362 struct intel_connector
*intel_connector
= to_intel_connector(connector
);
363 struct drm_display_mode
*fixed_mode
= intel_connector
->panel
.fixed_mode
;
364 struct intel_dsi
*intel_dsi
= intel_attached_dsi(connector
);
368 if (mode
->flags
& DRM_MODE_FLAG_DBLSCAN
) {
369 DRM_DEBUG_KMS("MODE_NO_DBLESCAN\n");
370 return MODE_NO_DBLESCAN
;
374 if (mode
->hdisplay
> fixed_mode
->hdisplay
)
376 if (mode
->vdisplay
> fixed_mode
->vdisplay
)
380 return intel_dsi
->dev
.dev_ops
->mode_valid(&intel_dsi
->dev
, mode
);
383 /* return txclkesc cycles in terms of divider and duration in us */
384 static u16
txclkesc(u32 divider
, unsigned int us
)
387 case ESCAPE_CLOCK_DIVIDER_1
:
390 case ESCAPE_CLOCK_DIVIDER_2
:
392 case ESCAPE_CLOCK_DIVIDER_4
:
397 /* return pixels in terms of txbyteclkhs */
398 static u16
txbyteclkhs(u16 pixels
, int bpp
, int lane_count
)
400 return DIV_ROUND_UP(DIV_ROUND_UP(pixels
* bpp
, 8), lane_count
);
403 static void set_dsi_timings(struct drm_encoder
*encoder
,
404 const struct drm_display_mode
*mode
)
406 struct drm_device
*dev
= encoder
->dev
;
407 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
408 struct intel_crtc
*intel_crtc
= to_intel_crtc(encoder
->crtc
);
409 struct intel_dsi
*intel_dsi
= enc_to_intel_dsi(encoder
);
410 int pipe
= intel_crtc
->pipe
;
411 unsigned int bpp
= intel_crtc
->config
.pipe_bpp
;
412 unsigned int lane_count
= intel_dsi
->lane_count
;
414 u16 hactive
, hfp
, hsync
, hbp
, vfp
, vsync
, vbp
;
416 hactive
= mode
->hdisplay
;
417 hfp
= mode
->hsync_start
- mode
->hdisplay
;
418 hsync
= mode
->hsync_end
- mode
->hsync_start
;
419 hbp
= mode
->htotal
- mode
->hsync_end
;
421 vfp
= mode
->vsync_start
- mode
->vdisplay
;
422 vsync
= mode
->vsync_end
- mode
->vsync_start
;
423 vbp
= mode
->vtotal
- mode
->vsync_end
;
425 /* horizontal values are in terms of high speed byte clock */
426 hactive
= txbyteclkhs(hactive
, bpp
, lane_count
);
427 hfp
= txbyteclkhs(hfp
, bpp
, lane_count
);
428 hsync
= txbyteclkhs(hsync
, bpp
, lane_count
);
429 hbp
= txbyteclkhs(hbp
, bpp
, lane_count
);
431 I915_WRITE(MIPI_HACTIVE_AREA_COUNT(pipe
), hactive
);
432 I915_WRITE(MIPI_HFP_COUNT(pipe
), hfp
);
434 /* meaningful for video mode non-burst sync pulse mode only, can be zero
435 * for non-burst sync events and burst modes */
436 I915_WRITE(MIPI_HSYNC_PADDING_COUNT(pipe
), hsync
);
437 I915_WRITE(MIPI_HBP_COUNT(pipe
), hbp
);
439 /* vertical values are in terms of lines */
440 I915_WRITE(MIPI_VFP_COUNT(pipe
), vfp
);
441 I915_WRITE(MIPI_VSYNC_PADDING_COUNT(pipe
), vsync
);
442 I915_WRITE(MIPI_VBP_COUNT(pipe
), vbp
);
445 static void intel_dsi_prepare(struct intel_encoder
*intel_encoder
)
447 struct drm_encoder
*encoder
= &intel_encoder
->base
;
448 struct drm_device
*dev
= encoder
->dev
;
449 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
450 struct intel_crtc
*intel_crtc
= to_intel_crtc(encoder
->crtc
);
451 struct intel_dsi
*intel_dsi
= enc_to_intel_dsi(encoder
);
452 struct drm_display_mode
*adjusted_mode
=
453 &intel_crtc
->config
.adjusted_mode
;
454 int pipe
= intel_crtc
->pipe
;
455 unsigned int bpp
= intel_crtc
->config
.pipe_bpp
;
458 DRM_DEBUG_KMS("pipe %c\n", pipe_name(pipe
));
460 /* escape clock divider, 20MHz, shared for A and C. device ready must be
461 * off when doing this! txclkesc? */
462 tmp
= I915_READ(MIPI_CTRL(0));
463 tmp
&= ~ESCAPE_CLOCK_DIVIDER_MASK
;
464 I915_WRITE(MIPI_CTRL(0), tmp
| ESCAPE_CLOCK_DIVIDER_1
);
466 /* read request priority is per pipe */
467 tmp
= I915_READ(MIPI_CTRL(pipe
));
468 tmp
&= ~READ_REQUEST_PRIORITY_MASK
;
469 I915_WRITE(MIPI_CTRL(pipe
), tmp
| READ_REQUEST_PRIORITY_HIGH
);
471 /* XXX: why here, why like this? handling in irq handler?! */
472 I915_WRITE(MIPI_INTR_STAT(pipe
), 0xffffffff);
473 I915_WRITE(MIPI_INTR_EN(pipe
), 0xffffffff);
475 I915_WRITE(MIPI_DPHY_PARAM(pipe
), intel_dsi
->dphy_reg
);
477 I915_WRITE(MIPI_DPI_RESOLUTION(pipe
),
478 adjusted_mode
->vdisplay
<< VERTICAL_ADDRESS_SHIFT
|
479 adjusted_mode
->hdisplay
<< HORIZONTAL_ADDRESS_SHIFT
);
481 set_dsi_timings(encoder
, adjusted_mode
);
483 val
= intel_dsi
->lane_count
<< DATA_LANES_PRG_REG_SHIFT
;
484 if (is_cmd_mode(intel_dsi
)) {
485 val
|= intel_dsi
->channel
<< CMD_MODE_CHANNEL_NUMBER_SHIFT
;
486 val
|= CMD_MODE_DATA_WIDTH_8_BIT
; /* XXX */
488 val
|= intel_dsi
->channel
<< VID_MODE_CHANNEL_NUMBER_SHIFT
;
490 /* XXX: cross-check bpp vs. pixel format? */
491 val
|= intel_dsi
->pixel_format
;
493 I915_WRITE(MIPI_DSI_FUNC_PRG(pipe
), val
);
495 /* timeouts for recovery. one frame IIUC. if counter expires, EOT and
499 * In burst mode, value greater than one DPI line Time in byte clock
500 * (txbyteclkhs) To timeout this timer 1+ of the above said value is
503 * In non-burst mode, Value greater than one DPI frame time in byte
504 * clock(txbyteclkhs) To timeout this timer 1+ of the above said value
507 * In DBI only mode, value greater than one DBI frame time in byte
508 * clock(txbyteclkhs) To timeout this timer 1+ of the above said value
512 if (is_vid_mode(intel_dsi
) &&
513 intel_dsi
->video_mode_format
== VIDEO_MODE_BURST
) {
514 I915_WRITE(MIPI_HS_TX_TIMEOUT(pipe
),
515 txbyteclkhs(adjusted_mode
->htotal
, bpp
,
516 intel_dsi
->lane_count
) + 1);
518 I915_WRITE(MIPI_HS_TX_TIMEOUT(pipe
),
519 txbyteclkhs(adjusted_mode
->vtotal
*
520 adjusted_mode
->htotal
,
521 bpp
, intel_dsi
->lane_count
) + 1);
523 I915_WRITE(MIPI_LP_RX_TIMEOUT(pipe
), intel_dsi
->lp_rx_timeout
);
524 I915_WRITE(MIPI_TURN_AROUND_TIMEOUT(pipe
), intel_dsi
->turn_arnd_val
);
525 I915_WRITE(MIPI_DEVICE_RESET_TIMER(pipe
), intel_dsi
->rst_timer_val
);
529 /* in terms of low power clock */
530 I915_WRITE(MIPI_INIT_COUNT(pipe
), txclkesc(intel_dsi
->escape_clk_div
, 100));
533 if (intel_dsi
->eotp_pkt
== 0)
536 if (intel_dsi
->clock_stop
)
539 /* recovery disables */
540 I915_WRITE(MIPI_EOT_DISABLE(pipe
), val
);
542 /* in terms of low power clock */
543 I915_WRITE(MIPI_INIT_COUNT(pipe
), intel_dsi
->init_count
);
545 /* in terms of txbyteclkhs. actual high to low switch +
546 * MIPI_STOP_STATE_STALL * MIPI_LP_BYTECLK.
548 * XXX: write MIPI_STOP_STATE_STALL?
550 I915_WRITE(MIPI_HIGH_LOW_SWITCH_COUNT(pipe
),
551 intel_dsi
->hs_to_lp_count
);
553 /* XXX: low power clock equivalence in terms of byte clock. the number
554 * of byte clocks occupied in one low power clock. based on txbyteclkhs
555 * and txclkesc. txclkesc time / txbyteclk time * (105 +
556 * MIPI_STOP_STATE_STALL) / 105.???
558 I915_WRITE(MIPI_LP_BYTECLK(pipe
), intel_dsi
->lp_byte_clk
);
560 /* the bw essential for transmitting 16 long packets containing 252
561 * bytes meant for dcs write memory command is programmed in this
562 * register in terms of byte clocks. based on dsi transfer rate and the
563 * number of lanes configured the time taken to transmit 16 long packets
564 * in a dsi stream varies. */
565 I915_WRITE(MIPI_DBI_BW_CTRL(pipe
), intel_dsi
->bw_timer
);
567 I915_WRITE(MIPI_CLK_LANE_SWITCH_TIME_CNT(pipe
),
568 intel_dsi
->clk_lp_to_hs_count
<< LP_HS_SSW_CNT_SHIFT
|
569 intel_dsi
->clk_hs_to_lp_count
<< HS_LP_PWR_SW_CNT_SHIFT
);
571 if (is_vid_mode(intel_dsi
))
572 /* Some panels might have resolution which is not a multiple of
573 * 64 like 1366 x 768. Enable RANDOM resolution support for such
574 * panels by default */
575 I915_WRITE(MIPI_VIDEO_MODE_FORMAT(pipe
),
576 intel_dsi
->video_frmt_cfg_bits
|
577 intel_dsi
->video_mode_format
|
579 RANDOM_DPI_DISPLAY_RESOLUTION
);
582 static void intel_dsi_pre_pll_enable(struct intel_encoder
*encoder
)
586 intel_dsi_prepare(encoder
);
588 vlv_enable_dsi_pll(encoder
);
591 static enum drm_connector_status
592 intel_dsi_detect(struct drm_connector
*connector
, bool force
)
594 struct intel_dsi
*intel_dsi
= intel_attached_dsi(connector
);
595 struct intel_encoder
*intel_encoder
= &intel_dsi
->base
;
596 enum intel_display_power_domain power_domain
;
597 enum drm_connector_status connector_status
;
598 struct drm_i915_private
*dev_priv
= intel_encoder
->base
.dev
->dev_private
;
601 power_domain
= intel_display_port_power_domain(intel_encoder
);
603 intel_display_power_get(dev_priv
, power_domain
);
604 connector_status
= intel_dsi
->dev
.dev_ops
->detect(&intel_dsi
->dev
);
605 intel_display_power_put(dev_priv
, power_domain
);
607 return connector_status
;
610 static int intel_dsi_get_modes(struct drm_connector
*connector
)
612 struct intel_connector
*intel_connector
= to_intel_connector(connector
);
613 struct drm_display_mode
*mode
;
617 if (!intel_connector
->panel
.fixed_mode
) {
618 DRM_DEBUG_KMS("no fixed mode\n");
622 mode
= drm_mode_duplicate(connector
->dev
,
623 intel_connector
->panel
.fixed_mode
);
625 DRM_DEBUG_KMS("drm_mode_duplicate failed\n");
629 drm_mode_probed_add(connector
, mode
);
633 static void intel_dsi_destroy(struct drm_connector
*connector
)
635 struct intel_connector
*intel_connector
= to_intel_connector(connector
);
638 intel_panel_fini(&intel_connector
->panel
);
639 drm_connector_cleanup(connector
);
643 static const struct drm_encoder_funcs intel_dsi_funcs
= {
644 .destroy
= intel_encoder_destroy
,
647 static const struct drm_connector_helper_funcs intel_dsi_connector_helper_funcs
= {
648 .get_modes
= intel_dsi_get_modes
,
649 .mode_valid
= intel_dsi_mode_valid
,
650 .best_encoder
= intel_best_encoder
,
653 static const struct drm_connector_funcs intel_dsi_connector_funcs
= {
654 .dpms
= intel_connector_dpms
,
655 .detect
= intel_dsi_detect
,
656 .destroy
= intel_dsi_destroy
,
657 .fill_modes
= drm_helper_probe_single_connector_modes
,
660 void intel_dsi_init(struct drm_device
*dev
)
662 struct intel_dsi
*intel_dsi
;
663 struct intel_encoder
*intel_encoder
;
664 struct drm_encoder
*encoder
;
665 struct intel_connector
*intel_connector
;
666 struct drm_connector
*connector
;
667 struct drm_display_mode
*fixed_mode
= NULL
;
668 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
669 const struct intel_dsi_device
*dsi
;
674 /* There is no detection method for MIPI so rely on VBT */
675 if (!dev_priv
->vbt
.has_mipi
)
678 if (IS_VALLEYVIEW(dev
)) {
679 dev_priv
->mipi_mmio_base
= VLV_MIPI_BASE
;
681 DRM_ERROR("Unsupported Mipi device to reg base");
685 intel_dsi
= kzalloc(sizeof(*intel_dsi
), GFP_KERNEL
);
689 intel_connector
= kzalloc(sizeof(*intel_connector
), GFP_KERNEL
);
690 if (!intel_connector
) {
695 intel_encoder
= &intel_dsi
->base
;
696 encoder
= &intel_encoder
->base
;
697 intel_dsi
->attached_connector
= intel_connector
;
699 connector
= &intel_connector
->base
;
701 drm_encoder_init(dev
, encoder
, &intel_dsi_funcs
, DRM_MODE_ENCODER_DSI
);
703 /* XXX: very likely not all of these are needed */
704 intel_encoder
->hot_plug
= intel_dsi_hot_plug
;
705 intel_encoder
->compute_config
= intel_dsi_compute_config
;
706 intel_encoder
->pre_pll_enable
= intel_dsi_pre_pll_enable
;
707 intel_encoder
->pre_enable
= intel_dsi_pre_enable
;
708 intel_encoder
->enable
= intel_dsi_enable_nop
;
709 intel_encoder
->disable
= intel_dsi_pre_disable
;
710 intel_encoder
->post_disable
= intel_dsi_post_disable
;
711 intel_encoder
->get_hw_state
= intel_dsi_get_hw_state
;
712 intel_encoder
->get_config
= intel_dsi_get_config
;
714 intel_connector
->get_hw_state
= intel_connector_get_hw_state
;
715 intel_connector
->unregister
= intel_connector_unregister
;
717 for (i
= 0; i
< ARRAY_SIZE(intel_dsi_devices
); i
++) {
718 dsi
= &intel_dsi_devices
[i
];
719 intel_dsi
->dev
= *dsi
;
721 if (dsi
->dev_ops
->init(&intel_dsi
->dev
))
725 if (i
== ARRAY_SIZE(intel_dsi_devices
)) {
726 DRM_DEBUG_KMS("no device found\n");
730 intel_encoder
->type
= INTEL_OUTPUT_DSI
;
731 intel_encoder
->crtc_mask
= (1 << 0); /* XXX */
733 intel_encoder
->cloneable
= 0;
734 drm_connector_init(dev
, connector
, &intel_dsi_connector_funcs
,
735 DRM_MODE_CONNECTOR_DSI
);
737 drm_connector_helper_add(connector
, &intel_dsi_connector_helper_funcs
);
739 connector
->display_info
.subpixel_order
= SubPixelHorizontalRGB
; /*XXX*/
740 connector
->interlace_allowed
= false;
741 connector
->doublescan_allowed
= false;
743 intel_connector_attach_encoder(intel_connector
, intel_encoder
);
745 drm_connector_register(connector
);
747 fixed_mode
= dsi
->dev_ops
->get_modes(&intel_dsi
->dev
);
749 DRM_DEBUG_KMS("no fixed mode\n");
753 fixed_mode
->type
|= DRM_MODE_TYPE_PREFERRED
;
754 intel_panel_init(&intel_connector
->panel
, fixed_mode
, NULL
);
759 drm_encoder_cleanup(&intel_encoder
->base
);
761 kfree(intel_connector
);