2 * Copyright 2012-15 Advanced Micro Devices, Inc.
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 shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
26 #include <linux/slab.h>
28 #include "dm_services.h"
29 #include "dm_helpers.h"
30 #include "gpio_service_interface.h"
31 #include "include/ddc_service_types.h"
32 #include "include/grph_object_id.h"
33 #include "include/dpcd_defs.h"
34 #include "include/logger_interface.h"
35 #include "include/vector.h"
36 #include "core_types.h"
37 #include "dc_link_ddc.h"
38 #include "dce/dce_aux.h"
40 #define AUX_POWER_UP_WA_DELAY 500
41 #define I2C_OVER_AUX_DEFER_WA_DELAY 70
43 /* CV smart dongle slave address for retrieving supported HDTV modes*/
44 #define CV_SMART_DONGLE_ADDRESS 0x20
45 /* DVI-HDMI dongle slave address for retrieving dongle signature*/
46 #define DVI_HDMI_DONGLE_ADDRESS 0x68
47 struct dvi_hdmi_dongle_signature_data {
48 int8_t vendor[3];/* "AMD" */
51 int8_t id[11];/* "6140063500G"*/
53 /* DP-HDMI dongle slave address for retrieving dongle signature*/
54 #define DP_HDMI_DONGLE_ADDRESS 0x40
55 static const uint8_t dp_hdmi_dongle_signature_str[] = "DP-HDMI ADAPTOR";
56 #define DP_HDMI_DONGLE_SIGNATURE_EOT 0x04
58 struct dp_hdmi_dongle_signature_data {
59 int8_t id[15];/* "DP-HDMI ADAPTOR"*/
60 uint8_t eot;/* end of transmition '\x4' */
63 /* SCDC Address defines (HDMI 2.0)*/
64 #define HDMI_SCDC_WRITE_UPDATE_0_ARRAY 3
65 #define HDMI_SCDC_ADDRESS 0x54
66 #define HDMI_SCDC_SINK_VERSION 0x01
67 #define HDMI_SCDC_SOURCE_VERSION 0x02
68 #define HDMI_SCDC_UPDATE_0 0x10
69 #define HDMI_SCDC_TMDS_CONFIG 0x20
70 #define HDMI_SCDC_SCRAMBLER_STATUS 0x21
71 #define HDMI_SCDC_CONFIG_0 0x30
72 #define HDMI_SCDC_STATUS_FLAGS 0x40
73 #define HDMI_SCDC_ERR_DETECT 0x50
74 #define HDMI_SCDC_TEST_CONFIG 0xC0
76 union hdmi_scdc_update_read_data {
79 uint8_t STATUS_UPDATE:1;
87 union hdmi_scdc_status_flags_data {
90 uint8_t CLOCK_DETECTED:1;
101 union hdmi_scdc_ced_data {
121 struct i2c_payloads {
122 struct vector payloads;
125 struct aux_payloads {
126 struct vector payloads;
129 static struct i2c_payloads *dal_ddc_i2c_payloads_create(struct dc_context *ctx, uint32_t count)
131 struct i2c_payloads *payloads;
133 payloads = kzalloc(sizeof(struct i2c_payloads), GFP_KERNEL);
138 if (dal_vector_construct(
139 &payloads->payloads, ctx, count, sizeof(struct i2c_payload)))
147 static struct i2c_payload *dal_ddc_i2c_payloads_get(struct i2c_payloads *p)
149 return (struct i2c_payload *)p->payloads.container;
152 static uint32_t dal_ddc_i2c_payloads_get_count(struct i2c_payloads *p)
154 return p->payloads.count;
157 static void dal_ddc_i2c_payloads_destroy(struct i2c_payloads **p)
161 dal_vector_destruct(&(*p)->payloads);
167 #define DDC_MIN(a, b) (((a) < (b)) ? (a) : (b))
169 void dal_ddc_i2c_payloads_add(
170 struct i2c_payloads *payloads,
176 uint32_t payload_size = EDID_SEGMENT_SIZE;
179 for (pos = 0; pos < len; pos += payload_size) {
180 struct i2c_payload payload = {
183 .length = DDC_MIN(payload_size, len - pos),
184 .data = data + pos };
185 dal_vector_append(&payloads->payloads, &payload);
190 static void construct(
191 struct ddc_service *ddc_service,
192 struct ddc_service_init_data *init_data)
194 enum connector_id connector_id =
195 dal_graphics_object_id_get_connector_id(init_data->id);
197 struct gpio_service *gpio_service = init_data->ctx->gpio_service;
198 struct graphics_object_i2c_info i2c_info;
199 struct gpio_ddc_hw_info hw_info;
200 struct dc_bios *dcb = init_data->ctx->dc_bios;
202 ddc_service->link = init_data->link;
203 ddc_service->ctx = init_data->ctx;
205 if (BP_RESULT_OK != dcb->funcs->get_i2c_info(dcb, init_data->id, &i2c_info)) {
206 ddc_service->ddc_pin = NULL;
208 hw_info.ddc_channel = i2c_info.i2c_line;
209 hw_info.hw_supported = i2c_info.i2c_hw_assist;
211 ddc_service->ddc_pin = dal_gpio_create_ddc(
213 i2c_info.gpio_info.clk_a_register_index,
214 1 << i2c_info.gpio_info.clk_a_shift,
218 ddc_service->flags.EDID_QUERY_DONE_ONCE = false;
219 ddc_service->flags.FORCE_READ_REPEATED_START = false;
220 ddc_service->flags.EDID_STRESS_READ = false;
222 ddc_service->flags.IS_INTERNAL_DISPLAY =
223 connector_id == CONNECTOR_ID_EDP ||
224 connector_id == CONNECTOR_ID_LVDS;
226 ddc_service->wa.raw = 0;
229 struct ddc_service *dal_ddc_service_create(
230 struct ddc_service_init_data *init_data)
232 struct ddc_service *ddc_service;
234 ddc_service = kzalloc(sizeof(struct ddc_service), GFP_KERNEL);
239 construct(ddc_service, init_data);
243 static void destruct(struct ddc_service *ddc)
246 dal_gpio_destroy_ddc(&ddc->ddc_pin);
249 void dal_ddc_service_destroy(struct ddc_service **ddc)
260 enum ddc_service_type dal_ddc_service_get_type(struct ddc_service *ddc)
262 return DDC_SERVICE_TYPE_CONNECTOR;
265 void dal_ddc_service_set_transaction_type(
266 struct ddc_service *ddc,
267 enum ddc_transaction_type type)
269 ddc->transaction_type = type;
272 bool dal_ddc_service_is_in_aux_transaction_mode(struct ddc_service *ddc)
274 switch (ddc->transaction_type) {
275 case DDC_TRANSACTION_TYPE_I2C_OVER_AUX:
276 case DDC_TRANSACTION_TYPE_I2C_OVER_AUX_WITH_DEFER:
277 case DDC_TRANSACTION_TYPE_I2C_OVER_AUX_RETRY_DEFER:
285 void ddc_service_set_dongle_type(struct ddc_service *ddc,
286 enum display_dongle_type dongle_type)
288 ddc->dongle_type = dongle_type;
291 static uint32_t defer_delay_converter_wa(
292 struct ddc_service *ddc,
293 uint32_t defer_delay)
295 struct dc_link *link = ddc->link;
297 if (link->dpcd_caps.branch_dev_id == DP_BRANCH_DEVICE_ID_0080E1 &&
298 !memcmp(link->dpcd_caps.branch_dev_name,
299 DP_DVI_CONVERTER_ID_4,
300 sizeof(link->dpcd_caps.branch_dev_name)))
301 return defer_delay > I2C_OVER_AUX_DEFER_WA_DELAY ?
302 defer_delay : I2C_OVER_AUX_DEFER_WA_DELAY;
307 #define DP_TRANSLATOR_DELAY 5
309 uint32_t get_defer_delay(struct ddc_service *ddc)
311 uint32_t defer_delay = 0;
313 switch (ddc->transaction_type) {
314 case DDC_TRANSACTION_TYPE_I2C_OVER_AUX:
315 if ((DISPLAY_DONGLE_DP_VGA_CONVERTER == ddc->dongle_type) ||
316 (DISPLAY_DONGLE_DP_DVI_CONVERTER == ddc->dongle_type) ||
317 (DISPLAY_DONGLE_DP_HDMI_CONVERTER ==
320 defer_delay = DP_TRANSLATOR_DELAY;
323 defer_delay_converter_wa(ddc, defer_delay);
325 } else /*sink has a delay different from an Active Converter*/
328 case DDC_TRANSACTION_TYPE_I2C_OVER_AUX_WITH_DEFER:
329 defer_delay = DP_TRANSLATOR_DELAY;
337 static bool i2c_read(
338 struct ddc_service *ddc,
343 uint8_t offs_data = 0;
344 struct i2c_payload payloads[2] = {
349 .data = &offs_data },
356 struct i2c_command command = {
357 .payloads = payloads,
358 .number_of_payloads = 2,
359 .engine = DDC_I2C_COMMAND_ENGINE,
360 .speed = ddc->ctx->dc->caps.i2c_speed_in_khz };
362 return dm_helpers_submit_i2c(
368 void dal_ddc_service_i2c_query_dp_dual_mode_adaptor(
369 struct ddc_service *ddc,
370 struct display_sink_capability *sink_cap)
373 bool is_valid_hdmi_signature;
374 enum display_dongle_type *dongle = &sink_cap->dongle_type;
375 uint8_t type2_dongle_buf[DP_ADAPTOR_TYPE2_SIZE];
376 bool is_type2_dongle = false;
377 struct dp_hdmi_dongle_signature_data *dongle_signature;
379 /* Assume we have no valid DP passive dongle connected */
380 *dongle = DISPLAY_DONGLE_NONE;
381 sink_cap->max_hdmi_pixel_clock = DP_ADAPTOR_HDMI_SAFE_MAX_TMDS_CLK;
383 /* Read DP-HDMI dongle I2c (no response interpreted as DP-DVI dongle)*/
386 DP_HDMI_DONGLE_ADDRESS,
388 sizeof(type2_dongle_buf))) {
389 *dongle = DISPLAY_DONGLE_DP_DVI_DONGLE;
390 sink_cap->max_hdmi_pixel_clock = DP_ADAPTOR_DVI_MAX_TMDS_CLK;
392 CONN_DATA_DETECT(ddc->link, type2_dongle_buf, sizeof(type2_dongle_buf),
393 "DP-DVI passive dongle %dMhz: ",
394 DP_ADAPTOR_DVI_MAX_TMDS_CLK / 1000);
398 /* Check if Type 2 dongle.*/
399 if (type2_dongle_buf[DP_ADAPTOR_TYPE2_REG_ID] == DP_ADAPTOR_TYPE2_ID)
400 is_type2_dongle = true;
403 (struct dp_hdmi_dongle_signature_data *)type2_dongle_buf;
405 is_valid_hdmi_signature = true;
408 if (dongle_signature->eot != DP_HDMI_DONGLE_SIGNATURE_EOT) {
409 is_valid_hdmi_signature = false;
412 /* Check signature */
413 for (i = 0; i < sizeof(dongle_signature->id); ++i) {
414 /* If its not the right signature,
415 * skip mismatch in subversion byte.*/
416 if (dongle_signature->id[i] !=
417 dp_hdmi_dongle_signature_str[i] && i != 3) {
419 if (is_type2_dongle) {
420 is_valid_hdmi_signature = false;
427 if (is_type2_dongle) {
428 uint32_t max_tmds_clk =
429 type2_dongle_buf[DP_ADAPTOR_TYPE2_REG_MAX_TMDS_CLK];
431 max_tmds_clk = max_tmds_clk * 2 + max_tmds_clk / 2;
433 if (0 == max_tmds_clk ||
434 max_tmds_clk < DP_ADAPTOR_TYPE2_MIN_TMDS_CLK ||
435 max_tmds_clk > DP_ADAPTOR_TYPE2_MAX_TMDS_CLK) {
436 *dongle = DISPLAY_DONGLE_DP_DVI_DONGLE;
438 CONN_DATA_DETECT(ddc->link, type2_dongle_buf,
439 sizeof(type2_dongle_buf),
440 "DP-DVI passive dongle %dMhz: ",
441 DP_ADAPTOR_DVI_MAX_TMDS_CLK / 1000);
443 if (is_valid_hdmi_signature == true) {
444 *dongle = DISPLAY_DONGLE_DP_HDMI_DONGLE;
446 CONN_DATA_DETECT(ddc->link, type2_dongle_buf,
447 sizeof(type2_dongle_buf),
448 "Type 2 DP-HDMI passive dongle %dMhz: ",
451 *dongle = DISPLAY_DONGLE_DP_HDMI_MISMATCHED_DONGLE;
453 CONN_DATA_DETECT(ddc->link, type2_dongle_buf,
454 sizeof(type2_dongle_buf),
455 "Type 2 DP-HDMI passive dongle (no signature) %dMhz: ",
460 /* Multiply by 1000 to convert to kHz. */
461 sink_cap->max_hdmi_pixel_clock =
466 if (is_valid_hdmi_signature == true) {
467 *dongle = DISPLAY_DONGLE_DP_HDMI_DONGLE;
469 CONN_DATA_DETECT(ddc->link, type2_dongle_buf,
470 sizeof(type2_dongle_buf),
471 "Type 1 DP-HDMI passive dongle %dMhz: ",
472 sink_cap->max_hdmi_pixel_clock / 1000);
474 *dongle = DISPLAY_DONGLE_DP_HDMI_MISMATCHED_DONGLE;
476 CONN_DATA_DETECT(ddc->link, type2_dongle_buf,
477 sizeof(type2_dongle_buf),
478 "Type 1 DP-HDMI passive dongle (no signature) %dMhz: ",
479 sink_cap->max_hdmi_pixel_clock / 1000);
488 DP_EDP_CONFIGURATION_CAP - DP_DPCD_REV + 1
491 bool dal_ddc_service_query_ddc_data(
492 struct ddc_service *ddc,
500 uint32_t payload_size =
501 dal_ddc_service_is_in_aux_transaction_mode(ddc) ?
502 DEFAULT_AUX_MAX_DATA_SIZE : EDID_SEGMENT_SIZE;
504 uint32_t write_payloads =
505 (write_size + payload_size - 1) / payload_size;
507 uint32_t read_payloads =
508 (read_size + payload_size - 1) / payload_size;
510 uint32_t payloads_num = write_payloads + read_payloads;
512 if (write_size > EDID_SEGMENT_SIZE || read_size > EDID_SEGMENT_SIZE)
515 /*TODO: len of payload data for i2c and aux is uint8!!!!,
516 * but we want to read 256 over i2c!!!!*/
517 if (dal_ddc_service_is_in_aux_transaction_mode(ddc)) {
518 struct aux_payload payload;
519 bool read_available = true;
521 payload.i2c_over_aux = true;
522 payload.address = address;
523 payload.reply = NULL;
524 payload.defer_delay = get_defer_delay(ddc);
526 if (write_size != 0) {
527 payload.write = true;
529 payload.length = write_size;
530 payload.data = write_buf;
532 ret = dal_ddc_submit_aux_command(ddc, &payload);
533 read_available = ret;
536 if (read_size != 0 && read_available) {
537 payload.write = false;
539 payload.length = read_size;
540 payload.data = read_buf;
542 ret = dal_ddc_submit_aux_command(ddc, &payload);
545 struct i2c_payloads *payloads =
546 dal_ddc_i2c_payloads_create(ddc->ctx, payloads_num);
548 struct i2c_command command = {
549 .payloads = dal_ddc_i2c_payloads_get(payloads),
550 .number_of_payloads = 0,
551 .engine = DDC_I2C_COMMAND_ENGINE,
552 .speed = ddc->ctx->dc->caps.i2c_speed_in_khz };
554 dal_ddc_i2c_payloads_add(
555 payloads, address, write_size, write_buf, true);
557 dal_ddc_i2c_payloads_add(
558 payloads, address, read_size, read_buf, false);
560 command.number_of_payloads =
561 dal_ddc_i2c_payloads_get_count(payloads);
563 ret = dm_helpers_submit_i2c(
568 dal_ddc_i2c_payloads_destroy(&payloads);
574 bool dal_ddc_submit_aux_command(struct ddc_service *ddc,
575 struct aux_payload *payload)
577 uint8_t retrieved = 0;
587 struct aux_payload current_payload;
588 bool is_end_of_payload = (retrieved + DEFAULT_AUX_MAX_DATA_SIZE) >
589 payload->length ? true : false;
591 current_payload.address = payload->address;
592 current_payload.data = &payload->data[retrieved];
593 current_payload.defer_delay = payload->defer_delay;
594 current_payload.i2c_over_aux = payload->i2c_over_aux;
595 current_payload.length = is_end_of_payload ?
596 payload->length - retrieved : DEFAULT_AUX_MAX_DATA_SIZE;
597 current_payload.mot = !is_end_of_payload;
598 current_payload.reply = payload->reply;
599 current_payload.write = payload->write;
601 ret = dc_link_aux_transfer_with_retries(ddc, ¤t_payload);
603 retrieved += current_payload.length;
604 } while (retrieved < payload->length && ret == true);
609 /* dc_link_aux_transfer_raw() - Attempt to transfer
610 * the given aux payload. This function does not perform
611 * retries or handle error states. The reply is returned
612 * in the payload->reply and the result through
613 * *operation_result. Returns the number of bytes transferred,
614 * or -1 on a failure.
616 int dc_link_aux_transfer_raw(struct ddc_service *ddc,
617 struct aux_payload *payload,
618 enum aux_channel_operation_result *operation_result)
620 return dce_aux_transfer_raw(ddc, payload, operation_result);
623 /* dc_link_aux_transfer_with_retries() - Attempt to submit an
624 * aux payload, retrying on timeouts, defers, and busy states
625 * as outlined in the DP spec. Returns true if the request
628 * Unless you want to implement your own retry semantics, this
629 * is probably the one you want.
631 bool dc_link_aux_transfer_with_retries(struct ddc_service *ddc,
632 struct aux_payload *payload)
634 return dce_aux_transfer_with_retries(ddc, payload);
637 /*test only function*/
638 void dal_ddc_service_set_ddc_pin(
639 struct ddc_service *ddc_service,
642 ddc_service->ddc_pin = ddc;
645 struct ddc *dal_ddc_service_get_ddc_pin(struct ddc_service *ddc_service)
647 return ddc_service->ddc_pin;
650 void dal_ddc_service_write_scdc_data(struct ddc_service *ddc_service,
652 bool lte_340_scramble)
654 bool over_340_mhz = pix_clk > 340000 ? 1 : 0;
655 uint8_t slave_address = HDMI_SCDC_ADDRESS;
656 uint8_t offset = HDMI_SCDC_SINK_VERSION;
657 uint8_t sink_version = 0;
658 uint8_t write_buffer[2] = {0};
659 /*Lower than 340 Scramble bit from SCDC caps*/
661 dal_ddc_service_query_ddc_data(ddc_service, slave_address, &offset,
662 sizeof(offset), &sink_version, sizeof(sink_version));
663 if (sink_version == 1) {
664 /*Source Version = 1*/
665 write_buffer[0] = HDMI_SCDC_SOURCE_VERSION;
667 dal_ddc_service_query_ddc_data(ddc_service, slave_address,
668 write_buffer, sizeof(write_buffer), NULL, 0);
669 /*Read Request from SCDC caps*/
671 write_buffer[0] = HDMI_SCDC_TMDS_CONFIG;
675 } else if (lte_340_scramble) {
680 dal_ddc_service_query_ddc_data(ddc_service, slave_address, write_buffer,
681 sizeof(write_buffer), NULL, 0);
684 void dal_ddc_service_read_scdc_data(struct ddc_service *ddc_service)
686 uint8_t slave_address = HDMI_SCDC_ADDRESS;
687 uint8_t offset = HDMI_SCDC_TMDS_CONFIG;
688 uint8_t tmds_config = 0;
690 dal_ddc_service_query_ddc_data(ddc_service, slave_address, &offset,
691 sizeof(offset), &tmds_config, sizeof(tmds_config));
692 if (tmds_config & 0x1) {
693 union hdmi_scdc_status_flags_data status_data = { {0} };
694 uint8_t scramble_status = 0;
696 offset = HDMI_SCDC_SCRAMBLER_STATUS;
697 dal_ddc_service_query_ddc_data(ddc_service, slave_address,
698 &offset, sizeof(offset), &scramble_status,
699 sizeof(scramble_status));
700 offset = HDMI_SCDC_STATUS_FLAGS;
701 dal_ddc_service_query_ddc_data(ddc_service, slave_address,
702 &offset, sizeof(offset), status_data.byte,
703 sizeof(status_data.byte));