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4e646495 JN |
1 | /* |
2 | * Copyright © 2013 Intel Corporation | |
3 | * | |
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: | |
10 | * | |
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 | |
13 | * Software. | |
14 | * | |
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. | |
22 | * | |
23 | * Author: Jani Nikula <jani.nikula@intel.com> | |
24 | */ | |
25 | ||
26 | #include <drm/drmP.h> | |
c6f95f27 | 27 | #include <drm/drm_atomic_helper.h> |
4e646495 JN |
28 | #include <drm/drm_crtc.h> |
29 | #include <drm/drm_edid.h> | |
30 | #include <drm/i915_drm.h> | |
593e0622 | 31 | #include <drm/drm_panel.h> |
7e9804fd | 32 | #include <drm/drm_mipi_dsi.h> |
4e646495 JN |
33 | #include <linux/slab.h> |
34 | #include "i915_drv.h" | |
35 | #include "intel_drv.h" | |
36 | #include "intel_dsi.h" | |
4e646495 | 37 | |
593e0622 JN |
38 | static const struct { |
39 | u16 panel_id; | |
40 | struct drm_panel * (*init)(struct intel_dsi *intel_dsi, u16 panel_id); | |
41 | } intel_dsi_drivers[] = { | |
2ab8b458 SK |
42 | { |
43 | .panel_id = MIPI_DSI_GENERIC_PANEL_ID, | |
593e0622 | 44 | .init = vbt_panel_init, |
2ab8b458 | 45 | }, |
4e646495 JN |
46 | }; |
47 | ||
7f6a6a4a | 48 | static void wait_for_dsi_fifo_empty(struct intel_dsi *intel_dsi, enum port port) |
3b1808bf JN |
49 | { |
50 | struct drm_encoder *encoder = &intel_dsi->base.base; | |
51 | struct drm_device *dev = encoder->dev; | |
52 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3b1808bf JN |
53 | u32 mask; |
54 | ||
55 | mask = LP_CTRL_FIFO_EMPTY | HS_CTRL_FIFO_EMPTY | | |
56 | LP_DATA_FIFO_EMPTY | HS_DATA_FIFO_EMPTY; | |
57 | ||
58 | if (wait_for((I915_READ(MIPI_GEN_FIFO_STAT(port)) & mask) == mask, 100)) | |
59 | DRM_ERROR("DPI FIFOs are not empty\n"); | |
60 | } | |
61 | ||
7e9804fd JN |
62 | static void write_data(struct drm_i915_private *dev_priv, u32 reg, |
63 | const u8 *data, u32 len) | |
64 | { | |
65 | u32 i, j; | |
66 | ||
67 | for (i = 0; i < len; i += 4) { | |
68 | u32 val = 0; | |
69 | ||
70 | for (j = 0; j < min_t(u32, len - i, 4); j++) | |
71 | val |= *data++ << 8 * j; | |
72 | ||
73 | I915_WRITE(reg, val); | |
74 | } | |
75 | } | |
76 | ||
77 | static void read_data(struct drm_i915_private *dev_priv, u32 reg, | |
78 | u8 *data, u32 len) | |
79 | { | |
80 | u32 i, j; | |
81 | ||
82 | for (i = 0; i < len; i += 4) { | |
83 | u32 val = I915_READ(reg); | |
84 | ||
85 | for (j = 0; j < min_t(u32, len - i, 4); j++) | |
86 | *data++ = val >> 8 * j; | |
87 | } | |
88 | } | |
89 | ||
90 | static ssize_t intel_dsi_host_transfer(struct mipi_dsi_host *host, | |
91 | const struct mipi_dsi_msg *msg) | |
92 | { | |
93 | struct intel_dsi_host *intel_dsi_host = to_intel_dsi_host(host); | |
94 | struct drm_device *dev = intel_dsi_host->intel_dsi->base.base.dev; | |
95 | struct drm_i915_private *dev_priv = dev->dev_private; | |
96 | enum port port = intel_dsi_host->port; | |
97 | struct mipi_dsi_packet packet; | |
98 | ssize_t ret; | |
99 | const u8 *header, *data; | |
100 | u32 data_reg, data_mask, ctrl_reg, ctrl_mask; | |
101 | ||
102 | ret = mipi_dsi_create_packet(&packet, msg); | |
103 | if (ret < 0) | |
104 | return ret; | |
105 | ||
106 | header = packet.header; | |
107 | data = packet.payload; | |
108 | ||
109 | if (msg->flags & MIPI_DSI_MSG_USE_LPM) { | |
110 | data_reg = MIPI_LP_GEN_DATA(port); | |
111 | data_mask = LP_DATA_FIFO_FULL; | |
112 | ctrl_reg = MIPI_LP_GEN_CTRL(port); | |
113 | ctrl_mask = LP_CTRL_FIFO_FULL; | |
114 | } else { | |
115 | data_reg = MIPI_HS_GEN_DATA(port); | |
116 | data_mask = HS_DATA_FIFO_FULL; | |
117 | ctrl_reg = MIPI_HS_GEN_CTRL(port); | |
118 | ctrl_mask = HS_CTRL_FIFO_FULL; | |
119 | } | |
120 | ||
121 | /* note: this is never true for reads */ | |
122 | if (packet.payload_length) { | |
123 | ||
124 | if (wait_for((I915_READ(MIPI_GEN_FIFO_STAT(port)) & data_mask) == 0, 50)) | |
125 | DRM_ERROR("Timeout waiting for HS/LP DATA FIFO !full\n"); | |
126 | ||
127 | write_data(dev_priv, data_reg, packet.payload, | |
128 | packet.payload_length); | |
129 | } | |
130 | ||
131 | if (msg->rx_len) { | |
132 | I915_WRITE(MIPI_INTR_STAT(port), GEN_READ_DATA_AVAIL); | |
133 | } | |
134 | ||
135 | if (wait_for((I915_READ(MIPI_GEN_FIFO_STAT(port)) & ctrl_mask) == 0, 50)) { | |
136 | DRM_ERROR("Timeout waiting for HS/LP CTRL FIFO !full\n"); | |
137 | } | |
138 | ||
139 | I915_WRITE(ctrl_reg, header[2] << 16 | header[1] << 8 | header[0]); | |
140 | ||
141 | /* ->rx_len is set only for reads */ | |
142 | if (msg->rx_len) { | |
143 | data_mask = GEN_READ_DATA_AVAIL; | |
144 | if (wait_for((I915_READ(MIPI_INTR_STAT(port)) & data_mask) == data_mask, 50)) | |
145 | DRM_ERROR("Timeout waiting for read data.\n"); | |
146 | ||
147 | read_data(dev_priv, data_reg, msg->rx_buf, msg->rx_len); | |
148 | } | |
149 | ||
150 | /* XXX: fix for reads and writes */ | |
151 | return 4 + packet.payload_length; | |
152 | } | |
153 | ||
154 | static int intel_dsi_host_attach(struct mipi_dsi_host *host, | |
155 | struct mipi_dsi_device *dsi) | |
156 | { | |
157 | return 0; | |
158 | } | |
159 | ||
160 | static int intel_dsi_host_detach(struct mipi_dsi_host *host, | |
161 | struct mipi_dsi_device *dsi) | |
162 | { | |
163 | return 0; | |
164 | } | |
165 | ||
166 | static const struct mipi_dsi_host_ops intel_dsi_host_ops = { | |
167 | .attach = intel_dsi_host_attach, | |
168 | .detach = intel_dsi_host_detach, | |
169 | .transfer = intel_dsi_host_transfer, | |
170 | }; | |
171 | ||
172 | static struct intel_dsi_host *intel_dsi_host_init(struct intel_dsi *intel_dsi, | |
173 | enum port port) | |
174 | { | |
175 | struct intel_dsi_host *host; | |
176 | struct mipi_dsi_device *device; | |
177 | ||
178 | host = kzalloc(sizeof(*host), GFP_KERNEL); | |
179 | if (!host) | |
180 | return NULL; | |
181 | ||
182 | host->base.ops = &intel_dsi_host_ops; | |
183 | host->intel_dsi = intel_dsi; | |
184 | host->port = port; | |
185 | ||
186 | /* | |
187 | * We should call mipi_dsi_host_register(&host->base) here, but we don't | |
188 | * have a host->dev, and we don't have OF stuff either. So just use the | |
189 | * dsi framework as a library and hope for the best. Create the dsi | |
190 | * devices by ourselves here too. Need to be careful though, because we | |
191 | * don't initialize any of the driver model devices here. | |
192 | */ | |
193 | device = kzalloc(sizeof(*device), GFP_KERNEL); | |
194 | if (!device) { | |
195 | kfree(host); | |
196 | return NULL; | |
197 | } | |
198 | ||
199 | device->host = &host->base; | |
200 | host->device = device; | |
201 | ||
202 | return host; | |
203 | } | |
204 | ||
a2581a9e JN |
205 | /* |
206 | * send a video mode command | |
207 | * | |
208 | * XXX: commands with data in MIPI_DPI_DATA? | |
209 | */ | |
210 | static int dpi_send_cmd(struct intel_dsi *intel_dsi, u32 cmd, bool hs, | |
211 | enum port port) | |
212 | { | |
213 | struct drm_encoder *encoder = &intel_dsi->base.base; | |
214 | struct drm_device *dev = encoder->dev; | |
215 | struct drm_i915_private *dev_priv = dev->dev_private; | |
216 | u32 mask; | |
217 | ||
218 | /* XXX: pipe, hs */ | |
219 | if (hs) | |
220 | cmd &= ~DPI_LP_MODE; | |
221 | else | |
222 | cmd |= DPI_LP_MODE; | |
223 | ||
224 | /* clear bit */ | |
225 | I915_WRITE(MIPI_INTR_STAT(port), SPL_PKT_SENT_INTERRUPT); | |
226 | ||
227 | /* XXX: old code skips write if control unchanged */ | |
228 | if (cmd == I915_READ(MIPI_DPI_CONTROL(port))) | |
229 | DRM_ERROR("Same special packet %02x twice in a row.\n", cmd); | |
230 | ||
231 | I915_WRITE(MIPI_DPI_CONTROL(port), cmd); | |
232 | ||
233 | mask = SPL_PKT_SENT_INTERRUPT; | |
234 | if (wait_for((I915_READ(MIPI_INTR_STAT(port)) & mask) == mask, 100)) | |
235 | DRM_ERROR("Video mode command 0x%08x send failed.\n", cmd); | |
236 | ||
237 | return 0; | |
238 | } | |
239 | ||
e9fe51c6 | 240 | static void band_gap_reset(struct drm_i915_private *dev_priv) |
4ce8c9a7 | 241 | { |
a580516d | 242 | mutex_lock(&dev_priv->sb_lock); |
4ce8c9a7 | 243 | |
e9fe51c6 SK |
244 | vlv_flisdsi_write(dev_priv, 0x08, 0x0001); |
245 | vlv_flisdsi_write(dev_priv, 0x0F, 0x0005); | |
246 | vlv_flisdsi_write(dev_priv, 0x0F, 0x0025); | |
247 | udelay(150); | |
248 | vlv_flisdsi_write(dev_priv, 0x0F, 0x0000); | |
249 | vlv_flisdsi_write(dev_priv, 0x08, 0x0000); | |
4ce8c9a7 | 250 | |
a580516d | 251 | mutex_unlock(&dev_priv->sb_lock); |
4ce8c9a7 SK |
252 | } |
253 | ||
4e646495 JN |
254 | static inline bool is_vid_mode(struct intel_dsi *intel_dsi) |
255 | { | |
dfba2e2d | 256 | return intel_dsi->operation_mode == INTEL_DSI_VIDEO_MODE; |
4e646495 JN |
257 | } |
258 | ||
259 | static inline bool is_cmd_mode(struct intel_dsi *intel_dsi) | |
260 | { | |
dfba2e2d | 261 | return intel_dsi->operation_mode == INTEL_DSI_COMMAND_MODE; |
4e646495 JN |
262 | } |
263 | ||
4e646495 | 264 | static bool intel_dsi_compute_config(struct intel_encoder *encoder, |
5cec258b | 265 | struct intel_crtc_state *config) |
4e646495 JN |
266 | { |
267 | struct intel_dsi *intel_dsi = container_of(encoder, struct intel_dsi, | |
268 | base); | |
269 | struct intel_connector *intel_connector = intel_dsi->attached_connector; | |
270 | struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode; | |
2d112de7 | 271 | struct drm_display_mode *adjusted_mode = &config->base.adjusted_mode; |
4e646495 JN |
272 | |
273 | DRM_DEBUG_KMS("\n"); | |
274 | ||
275 | if (fixed_mode) | |
276 | intel_fixed_panel_mode(fixed_mode, adjusted_mode); | |
277 | ||
f573de5a SK |
278 | /* DSI uses short packets for sync events, so clear mode flags for DSI */ |
279 | adjusted_mode->flags = 0; | |
280 | ||
4e646495 JN |
281 | return true; |
282 | } | |
283 | ||
5505a244 GS |
284 | static void intel_dsi_port_enable(struct intel_encoder *encoder) |
285 | { | |
286 | struct drm_device *dev = encoder->base.dev; | |
287 | struct drm_i915_private *dev_priv = dev->dev_private; | |
288 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); | |
289 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); | |
369602d3 | 290 | enum port port; |
5505a244 GS |
291 | u32 temp; |
292 | ||
a9da9bce GS |
293 | if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) { |
294 | temp = I915_READ(VLV_CHICKEN_3); | |
295 | temp &= ~PIXEL_OVERLAP_CNT_MASK | | |
296 | intel_dsi->pixel_overlap << | |
297 | PIXEL_OVERLAP_CNT_SHIFT; | |
298 | I915_WRITE(VLV_CHICKEN_3, temp); | |
299 | } | |
300 | ||
369602d3 GS |
301 | for_each_dsi_port(port, intel_dsi->ports) { |
302 | temp = I915_READ(MIPI_PORT_CTRL(port)); | |
303 | temp &= ~LANE_CONFIGURATION_MASK; | |
304 | temp &= ~DUAL_LINK_MODE_MASK; | |
305 | ||
306 | if (intel_dsi->ports == ((1 << PORT_A) | (1 << PORT_C))) { | |
307 | temp |= (intel_dsi->dual_link - 1) | |
308 | << DUAL_LINK_MODE_SHIFT; | |
309 | temp |= intel_crtc->pipe ? | |
310 | LANE_CONFIGURATION_DUAL_LINK_B : | |
311 | LANE_CONFIGURATION_DUAL_LINK_A; | |
312 | } | |
313 | /* assert ip_tg_enable signal */ | |
314 | I915_WRITE(MIPI_PORT_CTRL(port), temp | DPI_ENABLE); | |
315 | POSTING_READ(MIPI_PORT_CTRL(port)); | |
316 | } | |
5505a244 GS |
317 | } |
318 | ||
319 | static void intel_dsi_port_disable(struct intel_encoder *encoder) | |
320 | { | |
321 | struct drm_device *dev = encoder->base.dev; | |
322 | struct drm_i915_private *dev_priv = dev->dev_private; | |
369602d3 GS |
323 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); |
324 | enum port port; | |
5505a244 GS |
325 | u32 temp; |
326 | ||
369602d3 GS |
327 | for_each_dsi_port(port, intel_dsi->ports) { |
328 | /* de-assert ip_tg_enable signal */ | |
329 | temp = I915_READ(MIPI_PORT_CTRL(port)); | |
330 | I915_WRITE(MIPI_PORT_CTRL(port), temp & ~DPI_ENABLE); | |
331 | POSTING_READ(MIPI_PORT_CTRL(port)); | |
332 | } | |
5505a244 GS |
333 | } |
334 | ||
1dbd7cb2 | 335 | static void intel_dsi_device_ready(struct intel_encoder *encoder) |
4e646495 | 336 | { |
1dbd7cb2 | 337 | struct drm_i915_private *dev_priv = encoder->base.dev->dev_private; |
24ee0e64 GS |
338 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); |
339 | enum port port; | |
1dbd7cb2 SK |
340 | u32 val; |
341 | ||
4e646495 | 342 | DRM_DEBUG_KMS("\n"); |
4e646495 | 343 | |
a580516d | 344 | mutex_lock(&dev_priv->sb_lock); |
2095f9fc SK |
345 | /* program rcomp for compliance, reduce from 50 ohms to 45 ohms |
346 | * needed everytime after power gate */ | |
347 | vlv_flisdsi_write(dev_priv, 0x04, 0x0004); | |
a580516d | 348 | mutex_unlock(&dev_priv->sb_lock); |
2095f9fc SK |
349 | |
350 | /* bandgap reset is needed after everytime we do power gate */ | |
351 | band_gap_reset(dev_priv); | |
352 | ||
24ee0e64 | 353 | for_each_dsi_port(port, intel_dsi->ports) { |
aceb365c | 354 | |
24ee0e64 GS |
355 | I915_WRITE(MIPI_DEVICE_READY(port), ULPS_STATE_ENTER); |
356 | usleep_range(2500, 3000); | |
aceb365c | 357 | |
bf344e80 GS |
358 | /* Enable MIPI PHY transparent latch |
359 | * Common bit for both MIPI Port A & MIPI Port C | |
360 | * No similar bit in MIPI Port C reg | |
361 | */ | |
4ba7d93a | 362 | val = I915_READ(MIPI_PORT_CTRL(PORT_A)); |
bf344e80 | 363 | I915_WRITE(MIPI_PORT_CTRL(PORT_A), val | LP_OUTPUT_HOLD); |
24ee0e64 | 364 | usleep_range(1000, 1500); |
aceb365c | 365 | |
24ee0e64 GS |
366 | I915_WRITE(MIPI_DEVICE_READY(port), ULPS_STATE_EXIT); |
367 | usleep_range(2500, 3000); | |
368 | ||
369 | I915_WRITE(MIPI_DEVICE_READY(port), DEVICE_READY); | |
370 | usleep_range(2500, 3000); | |
371 | } | |
1dbd7cb2 | 372 | } |
1dbd7cb2 SK |
373 | |
374 | static void intel_dsi_enable(struct intel_encoder *encoder) | |
375 | { | |
376 | struct drm_device *dev = encoder->base.dev; | |
377 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1dbd7cb2 | 378 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); |
4934b656 | 379 | enum port port; |
1dbd7cb2 SK |
380 | |
381 | DRM_DEBUG_KMS("\n"); | |
b9f5e07d | 382 | |
4934b656 JN |
383 | if (is_cmd_mode(intel_dsi)) { |
384 | for_each_dsi_port(port, intel_dsi->ports) | |
385 | I915_WRITE(MIPI_MAX_RETURN_PKT_SIZE(port), 8 * 4); | |
386 | } else { | |
4e646495 | 387 | msleep(20); /* XXX */ |
f03e4179 | 388 | for_each_dsi_port(port, intel_dsi->ports) |
a2581a9e | 389 | dpi_send_cmd(intel_dsi, TURN_ON, false, port); |
4e646495 JN |
390 | msleep(100); |
391 | ||
593e0622 | 392 | drm_panel_enable(intel_dsi->panel); |
2634fd7f | 393 | |
7f6a6a4a JN |
394 | for_each_dsi_port(port, intel_dsi->ports) |
395 | wait_for_dsi_fifo_empty(intel_dsi, port); | |
1381308b | 396 | |
5505a244 | 397 | intel_dsi_port_enable(encoder); |
4e646495 | 398 | } |
2634fd7f SK |
399 | } |
400 | ||
401 | static void intel_dsi_pre_enable(struct intel_encoder *encoder) | |
402 | { | |
20e5bf66 SK |
403 | struct drm_device *dev = encoder->base.dev; |
404 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2634fd7f | 405 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); |
20e5bf66 SK |
406 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); |
407 | enum pipe pipe = intel_crtc->pipe; | |
7f6a6a4a | 408 | enum port port; |
20e5bf66 | 409 | u32 tmp; |
2634fd7f SK |
410 | |
411 | DRM_DEBUG_KMS("\n"); | |
412 | ||
20e5bf66 SK |
413 | /* Disable DPOunit clock gating, can stall pipe |
414 | * and we need DPLL REFA always enabled */ | |
415 | tmp = I915_READ(DPLL(pipe)); | |
416 | tmp |= DPLL_REFA_CLK_ENABLE_VLV; | |
417 | I915_WRITE(DPLL(pipe), tmp); | |
418 | ||
f573de5a | 419 | /* update the hw state for DPLL */ |
6e3c9717 | 420 | intel_crtc->config->dpll_hw_state.dpll = DPLL_INTEGRATED_CLOCK_VLV | |
7f3de833 | 421 | DPLL_REFA_CLK_ENABLE_VLV; |
f573de5a | 422 | |
20e5bf66 SK |
423 | tmp = I915_READ(DSPCLK_GATE_D); |
424 | tmp |= DPOUNIT_CLOCK_GATE_DISABLE; | |
425 | I915_WRITE(DSPCLK_GATE_D, tmp); | |
2634fd7f SK |
426 | |
427 | /* put device in ready state */ | |
428 | intel_dsi_device_ready(encoder); | |
4e646495 | 429 | |
df38e655 SK |
430 | msleep(intel_dsi->panel_on_delay); |
431 | ||
593e0622 | 432 | drm_panel_prepare(intel_dsi->panel); |
20e5bf66 | 433 | |
7f6a6a4a JN |
434 | for_each_dsi_port(port, intel_dsi->ports) |
435 | wait_for_dsi_fifo_empty(intel_dsi, port); | |
1381308b | 436 | |
2634fd7f SK |
437 | /* Enable port in pre-enable phase itself because as per hw team |
438 | * recommendation, port should be enabled befor plane & pipe */ | |
439 | intel_dsi_enable(encoder); | |
440 | } | |
441 | ||
442 | static void intel_dsi_enable_nop(struct intel_encoder *encoder) | |
443 | { | |
444 | DRM_DEBUG_KMS("\n"); | |
445 | ||
446 | /* for DSI port enable has to be done before pipe | |
447 | * and plane enable, so port enable is done in | |
448 | * pre_enable phase itself unlike other encoders | |
449 | */ | |
4e646495 JN |
450 | } |
451 | ||
c315faf8 ID |
452 | static void intel_dsi_pre_disable(struct intel_encoder *encoder) |
453 | { | |
454 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); | |
f03e4179 | 455 | enum port port; |
c315faf8 ID |
456 | |
457 | DRM_DEBUG_KMS("\n"); | |
458 | ||
459 | if (is_vid_mode(intel_dsi)) { | |
460 | /* Send Shutdown command to the panel in LP mode */ | |
f03e4179 | 461 | for_each_dsi_port(port, intel_dsi->ports) |
a2581a9e | 462 | dpi_send_cmd(intel_dsi, SHUTDOWN, false, port); |
c315faf8 ID |
463 | msleep(10); |
464 | } | |
465 | } | |
466 | ||
4e646495 JN |
467 | static void intel_dsi_disable(struct intel_encoder *encoder) |
468 | { | |
1dbd7cb2 SK |
469 | struct drm_device *dev = encoder->base.dev; |
470 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4e646495 | 471 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); |
384f02a2 | 472 | enum port port; |
4e646495 JN |
473 | u32 temp; |
474 | ||
475 | DRM_DEBUG_KMS("\n"); | |
476 | ||
4e646495 | 477 | if (is_vid_mode(intel_dsi)) { |
7f6a6a4a JN |
478 | for_each_dsi_port(port, intel_dsi->ports) |
479 | wait_for_dsi_fifo_empty(intel_dsi, port); | |
1381308b | 480 | |
5505a244 | 481 | intel_dsi_port_disable(encoder); |
4e646495 JN |
482 | msleep(2); |
483 | } | |
484 | ||
384f02a2 GS |
485 | for_each_dsi_port(port, intel_dsi->ports) { |
486 | /* Panel commands can be sent when clock is in LP11 */ | |
487 | I915_WRITE(MIPI_DEVICE_READY(port), 0x0); | |
339023ec | 488 | |
384f02a2 GS |
489 | temp = I915_READ(MIPI_CTRL(port)); |
490 | temp &= ~ESCAPE_CLOCK_DIVIDER_MASK; | |
491 | I915_WRITE(MIPI_CTRL(port), temp | | |
492 | intel_dsi->escape_clk_div << | |
493 | ESCAPE_CLOCK_DIVIDER_SHIFT); | |
339023ec | 494 | |
384f02a2 | 495 | I915_WRITE(MIPI_EOT_DISABLE(port), CLOCKSTOP); |
339023ec | 496 | |
384f02a2 GS |
497 | temp = I915_READ(MIPI_DSI_FUNC_PRG(port)); |
498 | temp &= ~VID_MODE_FORMAT_MASK; | |
499 | I915_WRITE(MIPI_DSI_FUNC_PRG(port), temp); | |
339023ec | 500 | |
384f02a2 GS |
501 | I915_WRITE(MIPI_DEVICE_READY(port), 0x1); |
502 | } | |
1dbd7cb2 SK |
503 | /* if disable packets are sent before sending shutdown packet then in |
504 | * some next enable sequence send turn on packet error is observed */ | |
593e0622 | 505 | drm_panel_disable(intel_dsi->panel); |
1381308b | 506 | |
7f6a6a4a JN |
507 | for_each_dsi_port(port, intel_dsi->ports) |
508 | wait_for_dsi_fifo_empty(intel_dsi, port); | |
4e646495 JN |
509 | } |
510 | ||
1dbd7cb2 | 511 | static void intel_dsi_clear_device_ready(struct intel_encoder *encoder) |
4e646495 | 512 | { |
1dbd7cb2 | 513 | struct drm_i915_private *dev_priv = encoder->base.dev->dev_private; |
384f02a2 GS |
514 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); |
515 | enum port port; | |
1dbd7cb2 SK |
516 | u32 val; |
517 | ||
4e646495 | 518 | DRM_DEBUG_KMS("\n"); |
384f02a2 | 519 | for_each_dsi_port(port, intel_dsi->ports) { |
be4fc046 | 520 | |
384f02a2 GS |
521 | I915_WRITE(MIPI_DEVICE_READY(port), DEVICE_READY | |
522 | ULPS_STATE_ENTER); | |
523 | usleep_range(2000, 2500); | |
524 | ||
525 | I915_WRITE(MIPI_DEVICE_READY(port), DEVICE_READY | | |
526 | ULPS_STATE_EXIT); | |
527 | usleep_range(2000, 2500); | |
528 | ||
529 | I915_WRITE(MIPI_DEVICE_READY(port), DEVICE_READY | | |
530 | ULPS_STATE_ENTER); | |
531 | usleep_range(2000, 2500); | |
532 | ||
533 | /* Wait till Clock lanes are in LP-00 state for MIPI Port A | |
534 | * only. MIPI Port C has no similar bit for checking | |
535 | */ | |
536 | if (wait_for(((I915_READ(MIPI_PORT_CTRL(PORT_A)) & AFE_LATCHOUT) | |
537 | == 0x00000), 30)) | |
538 | DRM_ERROR("DSI LP not going Low\n"); | |
539 | ||
384f02a2 GS |
540 | /* Disable MIPI PHY transparent latch |
541 | * Common bit for both MIPI Port A & MIPI Port C | |
542 | */ | |
4ba7d93a | 543 | val = I915_READ(MIPI_PORT_CTRL(PORT_A)); |
384f02a2 GS |
544 | I915_WRITE(MIPI_PORT_CTRL(PORT_A), val & ~LP_OUTPUT_HOLD); |
545 | usleep_range(1000, 1500); | |
546 | ||
547 | I915_WRITE(MIPI_DEVICE_READY(port), 0x00); | |
548 | usleep_range(2000, 2500); | |
549 | } | |
1dbd7cb2 | 550 | |
be4fc046 | 551 | vlv_disable_dsi_pll(encoder); |
4e646495 | 552 | } |
20e5bf66 | 553 | |
1dbd7cb2 SK |
554 | static void intel_dsi_post_disable(struct intel_encoder *encoder) |
555 | { | |
20e5bf66 | 556 | struct drm_i915_private *dev_priv = encoder->base.dev->dev_private; |
1dbd7cb2 | 557 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); |
20e5bf66 | 558 | u32 val; |
1dbd7cb2 SK |
559 | |
560 | DRM_DEBUG_KMS("\n"); | |
561 | ||
c315faf8 ID |
562 | intel_dsi_disable(encoder); |
563 | ||
1dbd7cb2 SK |
564 | intel_dsi_clear_device_ready(encoder); |
565 | ||
20e5bf66 SK |
566 | val = I915_READ(DSPCLK_GATE_D); |
567 | val &= ~DPOUNIT_CLOCK_GATE_DISABLE; | |
568 | I915_WRITE(DSPCLK_GATE_D, val); | |
569 | ||
593e0622 | 570 | drm_panel_unprepare(intel_dsi->panel); |
df38e655 SK |
571 | |
572 | msleep(intel_dsi->panel_off_delay); | |
573 | msleep(intel_dsi->panel_pwr_cycle_delay); | |
1dbd7cb2 | 574 | } |
4e646495 JN |
575 | |
576 | static bool intel_dsi_get_hw_state(struct intel_encoder *encoder, | |
577 | enum pipe *pipe) | |
578 | { | |
579 | struct drm_i915_private *dev_priv = encoder->base.dev->dev_private; | |
c0beefd2 GS |
580 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); |
581 | struct drm_device *dev = encoder->base.dev; | |
6d129bea | 582 | enum intel_display_power_domain power_domain; |
c0beefd2 | 583 | u32 dpi_enabled, func; |
e7d7cad0 | 584 | enum port port; |
4e646495 JN |
585 | |
586 | DRM_DEBUG_KMS("\n"); | |
587 | ||
6d129bea | 588 | power_domain = intel_display_port_power_domain(encoder); |
f458ebbc | 589 | if (!intel_display_power_is_enabled(dev_priv, power_domain)) |
6d129bea ID |
590 | return false; |
591 | ||
4e646495 | 592 | /* XXX: this only works for one DSI output */ |
c0beefd2 | 593 | for_each_dsi_port(port, intel_dsi->ports) { |
e7d7cad0 | 594 | func = I915_READ(MIPI_DSI_FUNC_PRG(port)); |
c0beefd2 GS |
595 | dpi_enabled = I915_READ(MIPI_PORT_CTRL(port)) & |
596 | DPI_ENABLE; | |
597 | ||
598 | /* Due to some hardware limitations on BYT, MIPI Port C DPI | |
599 | * Enable bit does not get set. To check whether DSI Port C | |
600 | * was enabled in BIOS, check the Pipe B enable bit | |
601 | */ | |
602 | if (IS_VALLEYVIEW(dev) && !IS_CHERRYVIEW(dev) && | |
603 | (port == PORT_C)) | |
604 | dpi_enabled = I915_READ(PIPECONF(PIPE_B)) & | |
605 | PIPECONF_ENABLE; | |
4e646495 | 606 | |
c0beefd2 | 607 | if (dpi_enabled || (func & CMD_MODE_DATA_WIDTH_MASK)) { |
e7d7cad0 | 608 | if (I915_READ(MIPI_DEVICE_READY(port)) & DEVICE_READY) { |
c0beefd2 | 609 | *pipe = port == PORT_A ? PIPE_A : PIPE_B; |
4e646495 JN |
610 | return true; |
611 | } | |
612 | } | |
613 | } | |
614 | ||
615 | return false; | |
616 | } | |
617 | ||
618 | static void intel_dsi_get_config(struct intel_encoder *encoder, | |
5cec258b | 619 | struct intel_crtc_state *pipe_config) |
4e646495 | 620 | { |
f573de5a | 621 | u32 pclk; |
4e646495 JN |
622 | DRM_DEBUG_KMS("\n"); |
623 | ||
f573de5a SK |
624 | /* |
625 | * DPLL_MD is not used in case of DSI, reading will get some default value | |
626 | * set dpll_md = 0 | |
627 | */ | |
628 | pipe_config->dpll_hw_state.dpll_md = 0; | |
629 | ||
630 | pclk = vlv_get_dsi_pclk(encoder, pipe_config->pipe_bpp); | |
631 | if (!pclk) | |
632 | return; | |
633 | ||
2d112de7 | 634 | pipe_config->base.adjusted_mode.crtc_clock = pclk; |
f573de5a | 635 | pipe_config->port_clock = pclk; |
4e646495 JN |
636 | } |
637 | ||
c19de8eb DL |
638 | static enum drm_mode_status |
639 | intel_dsi_mode_valid(struct drm_connector *connector, | |
640 | struct drm_display_mode *mode) | |
4e646495 JN |
641 | { |
642 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
643 | struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode; | |
4e646495 JN |
644 | |
645 | DRM_DEBUG_KMS("\n"); | |
646 | ||
647 | if (mode->flags & DRM_MODE_FLAG_DBLSCAN) { | |
648 | DRM_DEBUG_KMS("MODE_NO_DBLESCAN\n"); | |
649 | return MODE_NO_DBLESCAN; | |
650 | } | |
651 | ||
652 | if (fixed_mode) { | |
653 | if (mode->hdisplay > fixed_mode->hdisplay) | |
654 | return MODE_PANEL; | |
655 | if (mode->vdisplay > fixed_mode->vdisplay) | |
656 | return MODE_PANEL; | |
657 | } | |
658 | ||
36d21f4c | 659 | return MODE_OK; |
4e646495 JN |
660 | } |
661 | ||
662 | /* return txclkesc cycles in terms of divider and duration in us */ | |
663 | static u16 txclkesc(u32 divider, unsigned int us) | |
664 | { | |
665 | switch (divider) { | |
666 | case ESCAPE_CLOCK_DIVIDER_1: | |
667 | default: | |
668 | return 20 * us; | |
669 | case ESCAPE_CLOCK_DIVIDER_2: | |
670 | return 10 * us; | |
671 | case ESCAPE_CLOCK_DIVIDER_4: | |
672 | return 5 * us; | |
673 | } | |
674 | } | |
675 | ||
676 | /* return pixels in terms of txbyteclkhs */ | |
7f0c8605 SK |
677 | static u16 txbyteclkhs(u16 pixels, int bpp, int lane_count, |
678 | u16 burst_mode_ratio) | |
4e646495 | 679 | { |
7f0c8605 | 680 | return DIV_ROUND_UP(DIV_ROUND_UP(pixels * bpp * burst_mode_ratio, |
7f3de833 | 681 | 8 * 100), lane_count); |
4e646495 JN |
682 | } |
683 | ||
684 | static void set_dsi_timings(struct drm_encoder *encoder, | |
685 | const struct drm_display_mode *mode) | |
686 | { | |
687 | struct drm_device *dev = encoder->dev; | |
688 | struct drm_i915_private *dev_priv = dev->dev_private; | |
689 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc); | |
690 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | |
aa102d28 | 691 | enum port port; |
6e3c9717 | 692 | unsigned int bpp = intel_crtc->config->pipe_bpp; |
4e646495 JN |
693 | unsigned int lane_count = intel_dsi->lane_count; |
694 | ||
695 | u16 hactive, hfp, hsync, hbp, vfp, vsync, vbp; | |
696 | ||
697 | hactive = mode->hdisplay; | |
698 | hfp = mode->hsync_start - mode->hdisplay; | |
699 | hsync = mode->hsync_end - mode->hsync_start; | |
700 | hbp = mode->htotal - mode->hsync_end; | |
701 | ||
aa102d28 GS |
702 | if (intel_dsi->dual_link) { |
703 | hactive /= 2; | |
704 | if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) | |
705 | hactive += intel_dsi->pixel_overlap; | |
706 | hfp /= 2; | |
707 | hsync /= 2; | |
708 | hbp /= 2; | |
709 | } | |
710 | ||
4e646495 JN |
711 | vfp = mode->vsync_start - mode->vdisplay; |
712 | vsync = mode->vsync_end - mode->vsync_start; | |
713 | vbp = mode->vtotal - mode->vsync_end; | |
714 | ||
715 | /* horizontal values are in terms of high speed byte clock */ | |
7f0c8605 | 716 | hactive = txbyteclkhs(hactive, bpp, lane_count, |
7f3de833 | 717 | intel_dsi->burst_mode_ratio); |
7f0c8605 SK |
718 | hfp = txbyteclkhs(hfp, bpp, lane_count, intel_dsi->burst_mode_ratio); |
719 | hsync = txbyteclkhs(hsync, bpp, lane_count, | |
7f3de833 | 720 | intel_dsi->burst_mode_ratio); |
7f0c8605 | 721 | hbp = txbyteclkhs(hbp, bpp, lane_count, intel_dsi->burst_mode_ratio); |
4e646495 | 722 | |
aa102d28 GS |
723 | for_each_dsi_port(port, intel_dsi->ports) { |
724 | I915_WRITE(MIPI_HACTIVE_AREA_COUNT(port), hactive); | |
725 | I915_WRITE(MIPI_HFP_COUNT(port), hfp); | |
726 | ||
727 | /* meaningful for video mode non-burst sync pulse mode only, | |
728 | * can be zero for non-burst sync events and burst modes */ | |
729 | I915_WRITE(MIPI_HSYNC_PADDING_COUNT(port), hsync); | |
730 | I915_WRITE(MIPI_HBP_COUNT(port), hbp); | |
731 | ||
732 | /* vertical values are in terms of lines */ | |
733 | I915_WRITE(MIPI_VFP_COUNT(port), vfp); | |
734 | I915_WRITE(MIPI_VSYNC_PADDING_COUNT(port), vsync); | |
735 | I915_WRITE(MIPI_VBP_COUNT(port), vbp); | |
736 | } | |
4e646495 JN |
737 | } |
738 | ||
07e4fb9e | 739 | static void intel_dsi_prepare(struct intel_encoder *intel_encoder) |
4e646495 JN |
740 | { |
741 | struct drm_encoder *encoder = &intel_encoder->base; | |
742 | struct drm_device *dev = encoder->dev; | |
743 | struct drm_i915_private *dev_priv = dev->dev_private; | |
744 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc); | |
745 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | |
746 | struct drm_display_mode *adjusted_mode = | |
6e3c9717 | 747 | &intel_crtc->config->base.adjusted_mode; |
24ee0e64 | 748 | enum port port; |
6e3c9717 | 749 | unsigned int bpp = intel_crtc->config->pipe_bpp; |
4e646495 | 750 | u32 val, tmp; |
24ee0e64 | 751 | u16 mode_hdisplay; |
4e646495 | 752 | |
e7d7cad0 | 753 | DRM_DEBUG_KMS("pipe %c\n", pipe_name(intel_crtc->pipe)); |
4e646495 | 754 | |
24ee0e64 | 755 | mode_hdisplay = adjusted_mode->hdisplay; |
4e646495 | 756 | |
24ee0e64 GS |
757 | if (intel_dsi->dual_link) { |
758 | mode_hdisplay /= 2; | |
759 | if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) | |
760 | mode_hdisplay += intel_dsi->pixel_overlap; | |
761 | } | |
4e646495 | 762 | |
24ee0e64 GS |
763 | for_each_dsi_port(port, intel_dsi->ports) { |
764 | /* escape clock divider, 20MHz, shared for A and C. | |
765 | * device ready must be off when doing this! txclkesc? */ | |
766 | tmp = I915_READ(MIPI_CTRL(PORT_A)); | |
767 | tmp &= ~ESCAPE_CLOCK_DIVIDER_MASK; | |
768 | I915_WRITE(MIPI_CTRL(PORT_A), tmp | ESCAPE_CLOCK_DIVIDER_1); | |
769 | ||
770 | /* read request priority is per pipe */ | |
771 | tmp = I915_READ(MIPI_CTRL(port)); | |
772 | tmp &= ~READ_REQUEST_PRIORITY_MASK; | |
773 | I915_WRITE(MIPI_CTRL(port), tmp | READ_REQUEST_PRIORITY_HIGH); | |
774 | ||
775 | /* XXX: why here, why like this? handling in irq handler?! */ | |
776 | I915_WRITE(MIPI_INTR_STAT(port), 0xffffffff); | |
777 | I915_WRITE(MIPI_INTR_EN(port), 0xffffffff); | |
778 | ||
779 | I915_WRITE(MIPI_DPHY_PARAM(port), intel_dsi->dphy_reg); | |
780 | ||
781 | I915_WRITE(MIPI_DPI_RESOLUTION(port), | |
782 | adjusted_mode->vdisplay << VERTICAL_ADDRESS_SHIFT | | |
783 | mode_hdisplay << HORIZONTAL_ADDRESS_SHIFT); | |
784 | } | |
4e646495 JN |
785 | |
786 | set_dsi_timings(encoder, adjusted_mode); | |
787 | ||
788 | val = intel_dsi->lane_count << DATA_LANES_PRG_REG_SHIFT; | |
789 | if (is_cmd_mode(intel_dsi)) { | |
790 | val |= intel_dsi->channel << CMD_MODE_CHANNEL_NUMBER_SHIFT; | |
791 | val |= CMD_MODE_DATA_WIDTH_8_BIT; /* XXX */ | |
792 | } else { | |
793 | val |= intel_dsi->channel << VID_MODE_CHANNEL_NUMBER_SHIFT; | |
794 | ||
795 | /* XXX: cross-check bpp vs. pixel format? */ | |
796 | val |= intel_dsi->pixel_format; | |
797 | } | |
4e646495 | 798 | |
24ee0e64 GS |
799 | tmp = 0; |
800 | if (intel_dsi->eotp_pkt == 0) | |
801 | tmp |= EOT_DISABLE; | |
802 | if (intel_dsi->clock_stop) | |
803 | tmp |= CLOCKSTOP; | |
4e646495 | 804 | |
24ee0e64 GS |
805 | for_each_dsi_port(port, intel_dsi->ports) { |
806 | I915_WRITE(MIPI_DSI_FUNC_PRG(port), val); | |
807 | ||
808 | /* timeouts for recovery. one frame IIUC. if counter expires, | |
809 | * EOT and stop state. */ | |
810 | ||
811 | /* | |
812 | * In burst mode, value greater than one DPI line Time in byte | |
813 | * clock (txbyteclkhs) To timeout this timer 1+ of the above | |
814 | * said value is recommended. | |
815 | * | |
816 | * In non-burst mode, Value greater than one DPI frame time in | |
817 | * byte clock(txbyteclkhs) To timeout this timer 1+ of the above | |
818 | * said value is recommended. | |
819 | * | |
820 | * In DBI only mode, value greater than one DBI frame time in | |
821 | * byte clock(txbyteclkhs) To timeout this timer 1+ of the above | |
822 | * said value is recommended. | |
823 | */ | |
4e646495 | 824 | |
24ee0e64 GS |
825 | if (is_vid_mode(intel_dsi) && |
826 | intel_dsi->video_mode_format == VIDEO_MODE_BURST) { | |
827 | I915_WRITE(MIPI_HS_TX_TIMEOUT(port), | |
828 | txbyteclkhs(adjusted_mode->htotal, bpp, | |
829 | intel_dsi->lane_count, | |
830 | intel_dsi->burst_mode_ratio) + 1); | |
831 | } else { | |
832 | I915_WRITE(MIPI_HS_TX_TIMEOUT(port), | |
833 | txbyteclkhs(adjusted_mode->vtotal * | |
834 | adjusted_mode->htotal, | |
835 | bpp, intel_dsi->lane_count, | |
836 | intel_dsi->burst_mode_ratio) + 1); | |
837 | } | |
838 | I915_WRITE(MIPI_LP_RX_TIMEOUT(port), intel_dsi->lp_rx_timeout); | |
839 | I915_WRITE(MIPI_TURN_AROUND_TIMEOUT(port), | |
840 | intel_dsi->turn_arnd_val); | |
841 | I915_WRITE(MIPI_DEVICE_RESET_TIMER(port), | |
842 | intel_dsi->rst_timer_val); | |
f1c79f16 | 843 | |
24ee0e64 | 844 | /* dphy stuff */ |
f1c79f16 | 845 | |
24ee0e64 GS |
846 | /* in terms of low power clock */ |
847 | I915_WRITE(MIPI_INIT_COUNT(port), | |
848 | txclkesc(intel_dsi->escape_clk_div, 100)); | |
4e646495 | 849 | |
4e646495 | 850 | |
24ee0e64 | 851 | /* recovery disables */ |
87c54d0e | 852 | I915_WRITE(MIPI_EOT_DISABLE(port), tmp); |
cf4dbd2e | 853 | |
24ee0e64 GS |
854 | /* in terms of low power clock */ |
855 | I915_WRITE(MIPI_INIT_COUNT(port), intel_dsi->init_count); | |
4e646495 | 856 | |
24ee0e64 GS |
857 | /* in terms of txbyteclkhs. actual high to low switch + |
858 | * MIPI_STOP_STATE_STALL * MIPI_LP_BYTECLK. | |
859 | * | |
860 | * XXX: write MIPI_STOP_STATE_STALL? | |
861 | */ | |
862 | I915_WRITE(MIPI_HIGH_LOW_SWITCH_COUNT(port), | |
863 | intel_dsi->hs_to_lp_count); | |
864 | ||
865 | /* XXX: low power clock equivalence in terms of byte clock. | |
866 | * the number of byte clocks occupied in one low power clock. | |
867 | * based on txbyteclkhs and txclkesc. | |
868 | * txclkesc time / txbyteclk time * (105 + MIPI_STOP_STATE_STALL | |
869 | * ) / 105.??? | |
870 | */ | |
871 | I915_WRITE(MIPI_LP_BYTECLK(port), intel_dsi->lp_byte_clk); | |
872 | ||
873 | /* the bw essential for transmitting 16 long packets containing | |
874 | * 252 bytes meant for dcs write memory command is programmed in | |
875 | * this register in terms of byte clocks. based on dsi transfer | |
876 | * rate and the number of lanes configured the time taken to | |
877 | * transmit 16 long packets in a dsi stream varies. */ | |
878 | I915_WRITE(MIPI_DBI_BW_CTRL(port), intel_dsi->bw_timer); | |
879 | ||
880 | I915_WRITE(MIPI_CLK_LANE_SWITCH_TIME_CNT(port), | |
881 | intel_dsi->clk_lp_to_hs_count << LP_HS_SSW_CNT_SHIFT | | |
882 | intel_dsi->clk_hs_to_lp_count << HS_LP_PWR_SW_CNT_SHIFT); | |
883 | ||
884 | if (is_vid_mode(intel_dsi)) | |
885 | /* Some panels might have resolution which is not a | |
886 | * multiple of 64 like 1366 x 768. Enable RANDOM | |
887 | * resolution support for such panels by default */ | |
888 | I915_WRITE(MIPI_VIDEO_MODE_FORMAT(port), | |
889 | intel_dsi->video_frmt_cfg_bits | | |
890 | intel_dsi->video_mode_format | | |
891 | IP_TG_CONFIG | | |
892 | RANDOM_DPI_DISPLAY_RESOLUTION); | |
893 | } | |
4e646495 JN |
894 | } |
895 | ||
07e4fb9e DV |
896 | static void intel_dsi_pre_pll_enable(struct intel_encoder *encoder) |
897 | { | |
898 | DRM_DEBUG_KMS("\n"); | |
899 | ||
900 | intel_dsi_prepare(encoder); | |
901 | ||
902 | vlv_enable_dsi_pll(encoder); | |
903 | } | |
904 | ||
4e646495 JN |
905 | static enum drm_connector_status |
906 | intel_dsi_detect(struct drm_connector *connector, bool force) | |
907 | { | |
36d21f4c | 908 | return connector_status_connected; |
4e646495 JN |
909 | } |
910 | ||
911 | static int intel_dsi_get_modes(struct drm_connector *connector) | |
912 | { | |
913 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
914 | struct drm_display_mode *mode; | |
915 | ||
916 | DRM_DEBUG_KMS("\n"); | |
917 | ||
918 | if (!intel_connector->panel.fixed_mode) { | |
919 | DRM_DEBUG_KMS("no fixed mode\n"); | |
920 | return 0; | |
921 | } | |
922 | ||
923 | mode = drm_mode_duplicate(connector->dev, | |
924 | intel_connector->panel.fixed_mode); | |
925 | if (!mode) { | |
926 | DRM_DEBUG_KMS("drm_mode_duplicate failed\n"); | |
927 | return 0; | |
928 | } | |
929 | ||
930 | drm_mode_probed_add(connector, mode); | |
931 | return 1; | |
932 | } | |
933 | ||
593e0622 | 934 | static void intel_dsi_connector_destroy(struct drm_connector *connector) |
4e646495 JN |
935 | { |
936 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
937 | ||
938 | DRM_DEBUG_KMS("\n"); | |
939 | intel_panel_fini(&intel_connector->panel); | |
4e646495 JN |
940 | drm_connector_cleanup(connector); |
941 | kfree(connector); | |
942 | } | |
943 | ||
593e0622 JN |
944 | static void intel_dsi_encoder_destroy(struct drm_encoder *encoder) |
945 | { | |
946 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | |
947 | ||
948 | if (intel_dsi->panel) { | |
949 | drm_panel_detach(intel_dsi->panel); | |
950 | /* XXX: Logically this call belongs in the panel driver. */ | |
951 | drm_panel_remove(intel_dsi->panel); | |
952 | } | |
953 | intel_encoder_destroy(encoder); | |
954 | } | |
955 | ||
4e646495 | 956 | static const struct drm_encoder_funcs intel_dsi_funcs = { |
593e0622 | 957 | .destroy = intel_dsi_encoder_destroy, |
4e646495 JN |
958 | }; |
959 | ||
960 | static const struct drm_connector_helper_funcs intel_dsi_connector_helper_funcs = { | |
961 | .get_modes = intel_dsi_get_modes, | |
962 | .mode_valid = intel_dsi_mode_valid, | |
963 | .best_encoder = intel_best_encoder, | |
964 | }; | |
965 | ||
966 | static const struct drm_connector_funcs intel_dsi_connector_funcs = { | |
967 | .dpms = intel_connector_dpms, | |
968 | .detect = intel_dsi_detect, | |
593e0622 | 969 | .destroy = intel_dsi_connector_destroy, |
4e646495 | 970 | .fill_modes = drm_helper_probe_single_connector_modes, |
2545e4a6 | 971 | .atomic_get_property = intel_connector_atomic_get_property, |
c6f95f27 | 972 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, |
98969725 | 973 | .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, |
4e646495 JN |
974 | }; |
975 | ||
4328633d | 976 | void intel_dsi_init(struct drm_device *dev) |
4e646495 JN |
977 | { |
978 | struct intel_dsi *intel_dsi; | |
979 | struct intel_encoder *intel_encoder; | |
980 | struct drm_encoder *encoder; | |
981 | struct intel_connector *intel_connector; | |
982 | struct drm_connector *connector; | |
593e0622 | 983 | struct drm_display_mode *scan, *fixed_mode = NULL; |
b6fdd0f2 | 984 | struct drm_i915_private *dev_priv = dev->dev_private; |
7e9804fd | 985 | enum port port; |
4e646495 JN |
986 | unsigned int i; |
987 | ||
988 | DRM_DEBUG_KMS("\n"); | |
989 | ||
3e6bd011 SK |
990 | /* There is no detection method for MIPI so rely on VBT */ |
991 | if (!dev_priv->vbt.has_mipi) | |
4328633d | 992 | return; |
3e6bd011 | 993 | |
868d665b CJ |
994 | if (IS_VALLEYVIEW(dev)) { |
995 | dev_priv->mipi_mmio_base = VLV_MIPI_BASE; | |
996 | } else { | |
997 | DRM_ERROR("Unsupported Mipi device to reg base"); | |
998 | return; | |
999 | } | |
3e6bd011 | 1000 | |
4e646495 JN |
1001 | intel_dsi = kzalloc(sizeof(*intel_dsi), GFP_KERNEL); |
1002 | if (!intel_dsi) | |
4328633d | 1003 | return; |
4e646495 | 1004 | |
08d9bc92 | 1005 | intel_connector = intel_connector_alloc(); |
4e646495 JN |
1006 | if (!intel_connector) { |
1007 | kfree(intel_dsi); | |
4328633d | 1008 | return; |
4e646495 JN |
1009 | } |
1010 | ||
1011 | intel_encoder = &intel_dsi->base; | |
1012 | encoder = &intel_encoder->base; | |
1013 | intel_dsi->attached_connector = intel_connector; | |
1014 | ||
1015 | connector = &intel_connector->base; | |
1016 | ||
1017 | drm_encoder_init(dev, encoder, &intel_dsi_funcs, DRM_MODE_ENCODER_DSI); | |
1018 | ||
1019 | /* XXX: very likely not all of these are needed */ | |
4e646495 JN |
1020 | intel_encoder->compute_config = intel_dsi_compute_config; |
1021 | intel_encoder->pre_pll_enable = intel_dsi_pre_pll_enable; | |
1022 | intel_encoder->pre_enable = intel_dsi_pre_enable; | |
2634fd7f | 1023 | intel_encoder->enable = intel_dsi_enable_nop; |
c315faf8 | 1024 | intel_encoder->disable = intel_dsi_pre_disable; |
4e646495 JN |
1025 | intel_encoder->post_disable = intel_dsi_post_disable; |
1026 | intel_encoder->get_hw_state = intel_dsi_get_hw_state; | |
1027 | intel_encoder->get_config = intel_dsi_get_config; | |
1028 | ||
1029 | intel_connector->get_hw_state = intel_connector_get_hw_state; | |
4932e2c3 | 1030 | intel_connector->unregister = intel_connector_unregister; |
4e646495 | 1031 | |
e7d7cad0 | 1032 | /* Pipe A maps to MIPI DSI port A, pipe B maps to MIPI DSI port C */ |
7e9804fd JN |
1033 | if (dev_priv->vbt.dsi.config->dual_link) { |
1034 | /* XXX: does dual link work on either pipe? */ | |
1035 | intel_encoder->crtc_mask = (1 << PIPE_A); | |
1036 | intel_dsi->ports = ((1 << PORT_A) | (1 << PORT_C)); | |
1037 | } else if (dev_priv->vbt.dsi.port == DVO_PORT_MIPIA) { | |
e7d7cad0 | 1038 | intel_encoder->crtc_mask = (1 << PIPE_A); |
17af40a8 JN |
1039 | intel_dsi->ports = (1 << PORT_A); |
1040 | } else if (dev_priv->vbt.dsi.port == DVO_PORT_MIPIC) { | |
e7d7cad0 | 1041 | intel_encoder->crtc_mask = (1 << PIPE_B); |
17af40a8 JN |
1042 | intel_dsi->ports = (1 << PORT_C); |
1043 | } | |
e7d7cad0 | 1044 | |
7e9804fd JN |
1045 | /* Create a DSI host (and a device) for each port. */ |
1046 | for_each_dsi_port(port, intel_dsi->ports) { | |
1047 | struct intel_dsi_host *host; | |
1048 | ||
1049 | host = intel_dsi_host_init(intel_dsi, port); | |
1050 | if (!host) | |
1051 | goto err; | |
1052 | ||
1053 | intel_dsi->dsi_hosts[port] = host; | |
1054 | } | |
1055 | ||
593e0622 JN |
1056 | for (i = 0; i < ARRAY_SIZE(intel_dsi_drivers); i++) { |
1057 | intel_dsi->panel = intel_dsi_drivers[i].init(intel_dsi, | |
1058 | intel_dsi_drivers[i].panel_id); | |
1059 | if (intel_dsi->panel) | |
4e646495 JN |
1060 | break; |
1061 | } | |
1062 | ||
593e0622 | 1063 | if (!intel_dsi->panel) { |
4e646495 JN |
1064 | DRM_DEBUG_KMS("no device found\n"); |
1065 | goto err; | |
1066 | } | |
1067 | ||
1068 | intel_encoder->type = INTEL_OUTPUT_DSI; | |
bc079e8b | 1069 | intel_encoder->cloneable = 0; |
4e646495 JN |
1070 | drm_connector_init(dev, connector, &intel_dsi_connector_funcs, |
1071 | DRM_MODE_CONNECTOR_DSI); | |
1072 | ||
1073 | drm_connector_helper_add(connector, &intel_dsi_connector_helper_funcs); | |
1074 | ||
1075 | connector->display_info.subpixel_order = SubPixelHorizontalRGB; /*XXX*/ | |
1076 | connector->interlace_allowed = false; | |
1077 | connector->doublescan_allowed = false; | |
1078 | ||
1079 | intel_connector_attach_encoder(intel_connector, intel_encoder); | |
1080 | ||
34ea3d38 | 1081 | drm_connector_register(connector); |
4e646495 | 1082 | |
593e0622 JN |
1083 | drm_panel_attach(intel_dsi->panel, connector); |
1084 | ||
1085 | mutex_lock(&dev->mode_config.mutex); | |
1086 | drm_panel_get_modes(intel_dsi->panel); | |
1087 | list_for_each_entry(scan, &connector->probed_modes, head) { | |
1088 | if ((scan->type & DRM_MODE_TYPE_PREFERRED)) { | |
1089 | fixed_mode = drm_mode_duplicate(dev, scan); | |
1090 | break; | |
1091 | } | |
1092 | } | |
1093 | mutex_unlock(&dev->mode_config.mutex); | |
1094 | ||
4e646495 JN |
1095 | if (!fixed_mode) { |
1096 | DRM_DEBUG_KMS("no fixed mode\n"); | |
1097 | goto err; | |
1098 | } | |
1099 | ||
4b6ed685 | 1100 | intel_panel_init(&intel_connector->panel, fixed_mode, NULL); |
4e646495 | 1101 | |
4328633d | 1102 | return; |
4e646495 JN |
1103 | |
1104 | err: | |
1105 | drm_encoder_cleanup(&intel_encoder->base); | |
1106 | kfree(intel_dsi); | |
1107 | kfree(intel_connector); | |
4e646495 | 1108 | } |