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* Copyright 2015 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: AMD
*
*/
#include <linux/string.h>
#include <linux/acpi.h>
#include <linux/i2c.h>
#include <drm/drm_probe_helper.h>
#include <drm/amdgpu_drm.h>
#include <drm/drm_edid.h>
#include "dm_services.h"
#include "amdgpu.h"
#include "dc.h"
#include "amdgpu_dm.h"
#include "amdgpu_dm_irq.h"
#include "amdgpu_dm_mst_types.h"
#include "dm_helpers.h"
/* dm_helpers_parse_edid_caps
*
* Parse edid caps
*
* @edid: [in] pointer to edid
* edid_caps: [in] pointer to edid caps
* @return
* void
* */
enum dc_edid_status dm_helpers_parse_edid_caps(
struct dc_context *ctx,
const struct dc_edid *edid,
struct dc_edid_caps *edid_caps)
{
struct edid *edid_buf = (struct edid *) edid->raw_edid;
struct cea_sad *sads;
int sad_count = -1;
int sadb_count = -1;
int i = 0;
int j = 0;
uint8_t *sadb = NULL;
enum dc_edid_status result = EDID_OK;
if (!edid_caps || !edid)
return EDID_BAD_INPUT;
if (!drm_edid_is_valid(edid_buf))
result = EDID_BAD_CHECKSUM;
edid_caps->manufacturer_id = (uint16_t) edid_buf->mfg_id[0] |
((uint16_t) edid_buf->mfg_id[1])<<8;
edid_caps->product_id = (uint16_t) edid_buf->prod_code[0] |
((uint16_t) edid_buf->prod_code[1])<<8;
edid_caps->serial_number = edid_buf->serial;
edid_caps->manufacture_week = edid_buf->mfg_week;
edid_caps->manufacture_year = edid_buf->mfg_year;
/* One of the four detailed_timings stores the monitor name. It's
* stored in an array of length 13. */
for (i = 0; i < 4; i++) {
if (edid_buf->detailed_timings[i].data.other_data.type == 0xfc) {
while (j < 13 && edid_buf->detailed_timings[i].data.other_data.data.str.str[j]) {
if (edid_buf->detailed_timings[i].data.other_data.data.str.str[j] == '\n')
break;
edid_caps->display_name[j] =
edid_buf->detailed_timings[i].data.other_data.data.str.str[j];
j++;
}
}
}
edid_caps->edid_hdmi = drm_detect_hdmi_monitor(
(struct edid *) edid->raw_edid);
sad_count = drm_edid_to_sad((struct edid *) edid->raw_edid, &sads);
if (sad_count <= 0)
return result;
edid_caps->audio_mode_count = sad_count < DC_MAX_AUDIO_DESC_COUNT ? sad_count : DC_MAX_AUDIO_DESC_COUNT;
for (i = 0; i < edid_caps->audio_mode_count; ++i) {
struct cea_sad *sad = &sads[i];
edid_caps->audio_modes[i].format_code = sad->format;
edid_caps->audio_modes[i].channel_count = sad->channels + 1;
edid_caps->audio_modes[i].sample_rate = sad->freq;
edid_caps->audio_modes[i].sample_size = sad->byte2;
}
sadb_count = drm_edid_to_speaker_allocation((struct edid *) edid->raw_edid, &sadb);
if (sadb_count < 0) {
DRM_ERROR("Couldn't read Speaker Allocation Data Block: %d\n", sadb_count);
sadb_count = 0;
}
if (sadb_count)
edid_caps->speaker_flags = sadb[0];
else
edid_caps->speaker_flags = DEFAULT_SPEAKER_LOCATION;
kfree(sads);
kfree(sadb);
return result;
}
static void get_payload_table(
struct amdgpu_dm_connector *aconnector,
struct dp_mst_stream_allocation_table *proposed_table)
{
int i;
struct drm_dp_mst_topology_mgr *mst_mgr =
&aconnector->mst_port->mst_mgr;
mutex_lock(&mst_mgr->payload_lock);
proposed_table->stream_count = 0;
/* number of active streams */
for (i = 0; i < mst_mgr->max_payloads; i++) {
if (mst_mgr->payloads[i].num_slots == 0)
break; /* end of vcp_id table */
ASSERT(mst_mgr->payloads[i].payload_state !=
DP_PAYLOAD_DELETE_LOCAL);
if (mst_mgr->payloads[i].payload_state == DP_PAYLOAD_LOCAL ||
mst_mgr->payloads[i].payload_state ==
DP_PAYLOAD_REMOTE) {
struct dp_mst_stream_allocation *sa =
&proposed_table->stream_allocations[
proposed_table->stream_count];
sa->slot_count = mst_mgr->payloads[i].num_slots;
sa->vcp_id = mst_mgr->proposed_vcpis[i]->vcpi;
proposed_table->stream_count++;
}
}
mutex_unlock(&mst_mgr->payload_lock);
}
void dm_helpers_dp_update_branch_info(
struct dc_context *ctx,
const struct dc_link *link)
{}
/*
* Writes payload allocation table in immediate downstream device.
*/
bool dm_helpers_dp_mst_write_payload_allocation_table(
struct dc_context *ctx,
const struct dc_stream_state *stream,
struct dp_mst_stream_allocation_table *proposed_table,
bool enable)
{
struct amdgpu_dm_connector *aconnector;
struct dm_connector_state *dm_conn_state;
struct drm_dp_mst_topology_mgr *mst_mgr;
struct drm_dp_mst_port *mst_port;
bool ret;
aconnector = (struct amdgpu_dm_connector *)stream->dm_stream_context;
/* Accessing the connector state is required for vcpi_slots allocation
* and directly relies on behaviour in commit check
* that blocks before commit guaranteeing that the state
* is not gonna be swapped while still in use in commit tail */
if (!aconnector || !aconnector->mst_port)
return false;
dm_conn_state = to_dm_connector_state(aconnector->base.state);
mst_mgr = &aconnector->mst_port->mst_mgr;
if (!mst_mgr->mst_state)
return false;
mst_port = aconnector->port;
if (enable) {
ret = drm_dp_mst_allocate_vcpi(mst_mgr, mst_port,
dm_conn_state->pbn,
dm_conn_state->vcpi_slots);
if (!ret)
return false;
} else {
drm_dp_mst_reset_vcpi_slots(mst_mgr, mst_port);
}
/* It's OK for this to fail */
drm_dp_update_payload_part1(mst_mgr);
/* mst_mgr->->payloads are VC payload notify MST branch using DPCD or
* AUX message. The sequence is slot 1-63 allocated sequence for each
* stream. AMD ASIC stream slot allocation should follow the same
* sequence. copy DRM MST allocation to dc */
get_payload_table(aconnector, proposed_table);
return true;
}
/*
* poll pending down reply
*/
void dm_helpers_dp_mst_poll_pending_down_reply(
struct dc_context *ctx,
const struct dc_link *link)
{}
/*
* Clear payload allocation table before enable MST DP link.
*/
void dm_helpers_dp_mst_clear_payload_allocation_table(
struct dc_context *ctx,
const struct dc_link *link)
{}
/*
* Polls for ACT (allocation change trigger) handled and sends
* ALLOCATE_PAYLOAD message.
*/
enum act_return_status dm_helpers_dp_mst_poll_for_allocation_change_trigger(
struct dc_context *ctx,
const struct dc_stream_state *stream)
{
struct amdgpu_dm_connector *aconnector;
struct drm_dp_mst_topology_mgr *mst_mgr;
int ret;
aconnector = (struct amdgpu_dm_connector *)stream->dm_stream_context;
if (!aconnector || !aconnector->mst_port)
return ACT_FAILED;
mst_mgr = &aconnector->mst_port->mst_mgr;
if (!mst_mgr->mst_state)
return ACT_FAILED;
ret = drm_dp_check_act_status(mst_mgr);
if (ret)
return ACT_FAILED;
return ACT_SUCCESS;
}
bool dm_helpers_dp_mst_send_payload_allocation(
struct dc_context *ctx,
const struct dc_stream_state *stream,
bool enable)
{
struct amdgpu_dm_connector *aconnector;
struct drm_dp_mst_topology_mgr *mst_mgr;
struct drm_dp_mst_port *mst_port;
aconnector = (struct amdgpu_dm_connector *)stream->dm_stream_context;
if (!aconnector || !aconnector->mst_port)
return false;
mst_port = aconnector->port;
mst_mgr = &aconnector->mst_port->mst_mgr;
if (!mst_mgr->mst_state)
return false;
/* It's OK for this to fail */
drm_dp_update_payload_part2(mst_mgr);
if (!enable)
drm_dp_mst_deallocate_vcpi(mst_mgr, mst_port);
return true;
}
void dm_dtn_log_begin(struct dc_context *ctx,
struct dc_log_buffer_ctx *log_ctx)
{
static const char msg[] = "[dtn begin]\n";
if (!log_ctx) {
pr_info("%s", msg);
return;
}
dm_dtn_log_append_v(ctx, log_ctx, "%s", msg);
}
__printf(3, 4)
void dm_dtn_log_append_v(struct dc_context *ctx,
struct dc_log_buffer_ctx *log_ctx,
const char *msg, ...)
{
va_list args;
size_t total;
int n;
if (!log_ctx) {
/* No context, redirect to dmesg. */
struct va_format vaf;
vaf.fmt = msg;
vaf.va = &args;
va_start(args, msg);
pr_info("%pV", &vaf);
va_end(args);
return;
}
/* Measure the output. */
va_start(args, msg);
n = vsnprintf(NULL, 0, msg, args);
va_end(args);
if (n <= 0)
return;
/* Reallocate the string buffer as needed. */
total = log_ctx->pos + n + 1;
if (total > log_ctx->size) {
char *buf = (char *)kvcalloc(total, sizeof(char), GFP_KERNEL);
if (buf) {
memcpy(buf, log_ctx->buf, log_ctx->pos);
kfree(log_ctx->buf);
log_ctx->buf = buf;
log_ctx->size = total;
}
}
if (!log_ctx->buf)
return;
/* Write the formatted string to the log buffer. */
va_start(args, msg);
n = vscnprintf(
log_ctx->buf + log_ctx->pos,
log_ctx->size - log_ctx->pos,
msg,
args);
va_end(args);
if (n > 0)
log_ctx->pos += n;
}
void dm_dtn_log_end(struct dc_context *ctx,
struct dc_log_buffer_ctx *log_ctx)
{
static const char msg[] = "[dtn end]\n";
if (!log_ctx) {
pr_info("%s", msg);
return;
}
dm_dtn_log_append_v(ctx, log_ctx, "%s", msg);
}
bool dm_helpers_dp_mst_start_top_mgr(
struct dc_context *ctx,
const struct dc_link *link,
bool boot)
{
struct amdgpu_dm_connector *aconnector = link->priv;
if (!aconnector) {
DRM_ERROR("Failed to find connector for link!");
return false;
}
if (boot) {
DRM_INFO("DM_MST: Differing MST start on aconnector: %p [id: %d]\n",
aconnector, aconnector->base.base.id);
return true;
}
DRM_INFO("DM_MST: starting TM on aconnector: %p [id: %d]\n",
aconnector, aconnector->base.base.id);
return (drm_dp_mst_topology_mgr_set_mst(&aconnector->mst_mgr, true) == 0);
}
void dm_helpers_dp_mst_stop_top_mgr(
struct dc_context *ctx,
struct dc_link *link)
{
struct amdgpu_dm_connector *aconnector = link->priv;
uint8_t i;
if (!aconnector) {
DRM_ERROR("Failed to find connector for link!");
return;
}
DRM_INFO("DM_MST: stopping TM on aconnector: %p [id: %d]\n",
aconnector, aconnector->base.base.id);
if (aconnector->mst_mgr.mst_state == true) {
drm_dp_mst_topology_mgr_set_mst(&aconnector->mst_mgr, false);
for (i = 0; i < MAX_SINKS_PER_LINK; i++) {
if (link->remote_sinks[i] == NULL)
continue;
if (link->remote_sinks[i]->sink_signal ==
SIGNAL_TYPE_DISPLAY_PORT_MST) {
dc_link_remove_remote_sink(link, link->remote_sinks[i]);
if (aconnector->dc_sink) {
dc_sink_release(aconnector->dc_sink);
aconnector->dc_sink = NULL;
aconnector->dc_link->cur_link_settings.lane_count = 0;
}
}
}
}
}
bool dm_helpers_dp_read_dpcd(
struct dc_context *ctx,
const struct dc_link *link,
uint32_t address,
uint8_t *data,
uint32_t size)
{
struct amdgpu_dm_connector *aconnector = link->priv;
if (!aconnector) {
DC_LOG_DC("Failed to find connector for link!\n");
return false;
}
return drm_dp_dpcd_read(&aconnector->dm_dp_aux.aux, address,
data, size) > 0;
}
bool dm_helpers_dp_write_dpcd(
struct dc_context *ctx,
const struct dc_link *link,
uint32_t address,
const uint8_t *data,
uint32_t size)
{
struct amdgpu_dm_connector *aconnector = link->priv;
if (!aconnector) {
DRM_ERROR("Failed to find connector for link!");
return false;
}
return drm_dp_dpcd_write(&aconnector->dm_dp_aux.aux,
address, (uint8_t *)data, size) > 0;
}
bool dm_helpers_submit_i2c(
struct dc_context *ctx,
const struct dc_link *link,
struct i2c_command *cmd)
{
struct amdgpu_dm_connector *aconnector = link->priv;
struct i2c_msg *msgs;
int i = 0;
int num = cmd->number_of_payloads;
bool result;
if (!aconnector) {
DRM_ERROR("Failed to find connector for link!");
return false;
}
msgs = kcalloc(num, sizeof(struct i2c_msg), GFP_KERNEL);
if (!msgs)
return false;
for (i = 0; i < num; i++) {
msgs[i].flags = cmd->payloads[i].write ? 0 : I2C_M_RD;
msgs[i].addr = cmd->payloads[i].address;
msgs[i].len = cmd->payloads[i].length;
msgs[i].buf = cmd->payloads[i].data;
}
result = i2c_transfer(&aconnector->i2c->base, msgs, num) == num;
kfree(msgs);
return result;
}
bool dm_helpers_dp_write_dsc_enable(
struct dc_context *ctx,
const struct dc_stream_state *stream,
bool enable)
{
uint8_t enable_dsc = enable ? 1 : 0;
struct amdgpu_dm_connector *aconnector;
uint8_t ret = 0;
if (!stream)
return false;
if (stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {
aconnector = (struct amdgpu_dm_connector *)stream->dm_stream_context;
if (!aconnector->dsc_aux)
return false;
ret = drm_dp_dpcd_write(aconnector->dsc_aux, DP_DSC_ENABLE, &enable_dsc, 1);
}
if (stream->signal == SIGNAL_TYPE_DISPLAY_PORT) {
ret = dm_helpers_dp_write_dpcd(ctx, stream->link, DP_DSC_ENABLE, &enable_dsc, 1);
DC_LOG_DC("Send DSC %s to sst display\n", enable_dsc ? "enable" : "disable");
}
return (ret > 0);
}
bool dm_helpers_is_dp_sink_present(struct dc_link *link)
{
bool dp_sink_present;
struct amdgpu_dm_connector *aconnector = link->priv;
if (!aconnector) {
BUG_ON("Failed to find connector for link!");
return true;
}
mutex_lock(&aconnector->dm_dp_aux.aux.hw_mutex);
dp_sink_present = dc_link_is_dp_sink_present(link);
mutex_unlock(&aconnector->dm_dp_aux.aux.hw_mutex);
return dp_sink_present;
}
enum dc_edid_status dm_helpers_read_local_edid(
struct dc_context *ctx,
struct dc_link *link,
struct dc_sink *sink)
{
struct amdgpu_dm_connector *aconnector = link->priv;
struct drm_connector *connector = &aconnector->base;
struct i2c_adapter *ddc;
int retry = 3;
enum dc_edid_status edid_status;
struct edid *edid;
if (link->aux_mode)
ddc = &aconnector->dm_dp_aux.aux.ddc;
else
ddc = &aconnector->i2c->base;
/* some dongles read edid incorrectly the first time,
* do check sum and retry to make sure read correct edid.
*/
do {
edid = drm_get_edid(&aconnector->base, ddc);
/* DP Compliance Test 4.2.2.6 */
if (link->aux_mode && connector->edid_corrupt)
drm_dp_send_real_edid_checksum(&aconnector->dm_dp_aux.aux, connector->real_edid_checksum);
if (!edid && connector->edid_corrupt) {
connector->edid_corrupt = false;
return EDID_BAD_CHECKSUM;
}
if (!edid)
return EDID_NO_RESPONSE;
sink->dc_edid.length = EDID_LENGTH * (edid->extensions + 1);
memmove(sink->dc_edid.raw_edid, (uint8_t *)edid, sink->dc_edid.length);
/* We don't need the original edid anymore */
kfree(edid);
/* connector->display_info will be parsed from EDID and saved
* into drm_connector->display_info from edid by call stack
* below:
* drm_parse_ycbcr420_deep_color_info
* drm_parse_hdmi_forum_vsdb
* drm_parse_cea_ext
* drm_add_display_info
* drm_connector_update_edid_property
*
* drm_connector->display_info will be used by amdgpu_dm funcs,
* like fill_stream_properties_from_drm_display_mode
*/
amdgpu_dm_update_connector_after_detect(aconnector);
edid_status = dm_helpers_parse_edid_caps(
ctx,
&sink->dc_edid,
&sink->edid_caps);
} while (edid_status == EDID_BAD_CHECKSUM && --retry > 0);
if (edid_status != EDID_OK)
DRM_ERROR("EDID err: %d, on connector: %s",
edid_status,
aconnector->base.name);
/* DP Compliance Test 4.2.2.3 */
if (link->aux_mode)
drm_dp_send_real_edid_checksum(&aconnector->dm_dp_aux.aux, sink->dc_edid.raw_edid[sink->dc_edid.length-1]);
return edid_status;
}
int dm_helper_dmub_aux_transfer_sync(
struct dc_context *ctx,
const struct dc_link *link,
struct aux_payload *payload,
enum aux_return_code_type *operation_result)
{
return amdgpu_dm_process_dmub_aux_transfer_sync(ctx, link->link_index, payload, operation_result);
}
void dm_set_dcn_clocks(struct dc_context *ctx, struct dc_clocks *clks)
{
/* TODO: something */
}
void dm_helpers_smu_timeout(struct dc_context *ctx, unsigned int msg_id, unsigned int param, unsigned int timeout_us)
{
// TODO:
//amdgpu_device_gpu_recover(dc_context->driver-context, NULL);
}
void *dm_helpers_allocate_gpu_mem(
struct dc_context *ctx,
enum dc_gpu_mem_alloc_type type,
size_t size,
long long *addr)
{
struct amdgpu_device *adev = ctx->driver_context;
struct dal_allocation *da;
u32 domain = (type == DC_MEM_ALLOC_TYPE_GART) ?
AMDGPU_GEM_DOMAIN_GTT : AMDGPU_GEM_DOMAIN_VRAM;
int ret;
da = kzalloc(sizeof(struct dal_allocation), GFP_KERNEL);
if (!da)
return NULL;
ret = amdgpu_bo_create_kernel(adev, size, PAGE_SIZE,
domain, &da->bo,
&da->gpu_addr, &da->cpu_ptr);
*addr = da->gpu_addr;
if (ret) {
kfree(da);
return NULL;
}
/* add da to list in dm */
list_add(&da->list, &adev->dm.da_list);
return da->cpu_ptr;
}
void dm_helpers_free_gpu_mem(
struct dc_context *ctx,
enum dc_gpu_mem_alloc_type type,
void *pvMem)
{
struct amdgpu_device *adev = ctx->driver_context;
struct dal_allocation *da;
/* walk the da list in DM */
list_for_each_entry(da, &adev->dm.da_list, list) {
if (pvMem == da->cpu_ptr) {
amdgpu_bo_free_kernel(&da->bo, &da->gpu_addr, &da->cpu_ptr);
list_del(&da->list);
kfree(da);
break;
}
}
}
bool dm_helpers_dmub_outbox_interrupt_control(struct dc_context *ctx, bool enable)
{
enum dc_irq_source irq_source;
bool ret;
irq_source = DC_IRQ_SOURCE_DMCUB_OUTBOX;
ret = dc_interrupt_set(ctx->dc, irq_source, enable);
DRM_DEBUG_DRIVER("Dmub trace irq %sabling: r=%d\n",
enable ? "en" : "dis", ret);
return ret;
}
void dm_helpers_mst_enable_stream_features(const struct dc_stream_state *stream)
{
/* TODO: virtual DPCD */
struct dc_link *link = stream->link;
union down_spread_ctrl old_downspread;
union down_spread_ctrl new_downspread;
if (link->aux_access_disabled)
return;
if (!dm_helpers_dp_read_dpcd(link->ctx, link, DP_DOWNSPREAD_CTRL,
&old_downspread.raw,
sizeof(old_downspread)))
return;
new_downspread.raw = old_downspread.raw;
new_downspread.bits.IGNORE_MSA_TIMING_PARAM =
(stream->ignore_msa_timing_param) ? 1 : 0;
if (new_downspread.raw != old_downspread.raw)
dm_helpers_dp_write_dpcd(link->ctx, link, DP_DOWNSPREAD_CTRL,
&new_downspread.raw,
sizeof(new_downspread));
}
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