/*
* Copyright 2018 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_helpers.h>
#include <linux/uaccess.h>
#include "dc.h"
#include "amdgpu.h"
#include "amdgpu_dm.h"
#include "amdgpu_dm_debugfs.h"
#include "amdgpu_dm_replay.h"
#include "dm_helpers.h"
#include "dmub/dmub_srv.h"
#include "resource.h"
#include "dsc.h"
#include "link_hwss.h"
#include "dc/dc_dmub_srv.h"
#include "link/protocols/link_dp_capability.h"
#include "inc/hw/dchubbub.h"
#ifdef CONFIG_DRM_AMD_SECURE_DISPLAY
#include "amdgpu_dm_psr.h"
#endif
struct dmub_debugfs_trace_header {
uint32_t entry_count;
uint32_t reserved[3];
};
struct dmub_debugfs_trace_entry {
uint32_t trace_code;
uint32_t tick_count;
uint32_t param0;
uint32_t param1;
};
static const char *const mst_progress_status[] = {
"probe",
"remote_edid",
"allocate_new_payload",
"clear_allocated_payload",
};
/* parse_write_buffer_into_params - Helper function to parse debugfs write buffer into an array
*
* Function takes in attributes passed to debugfs write entry
* and writes into param array.
* The user passes max_param_num to identify maximum number of
* parameters that could be parsed.
*
*/
static int parse_write_buffer_into_params(char *wr_buf, uint32_t wr_buf_size,
long *param, const char __user *buf,
int max_param_num,
uint8_t *param_nums)
{
char *wr_buf_ptr = NULL;
uint32_t wr_buf_count = 0;
int r;
char *sub_str = NULL;
const char delimiter[3] = {' ', '\n', '\0'};
uint8_t param_index = 0;
*param_nums = 0;
wr_buf_ptr = wr_buf;
/* r is bytes not be copied */
if (copy_from_user(wr_buf_ptr, buf, wr_buf_size)) {
DRM_DEBUG_DRIVER("user data could not be read successfully\n");
return -EFAULT;
}
/* check number of parameters. isspace could not differ space and \n */
while ((*wr_buf_ptr != 0xa) && (wr_buf_count < wr_buf_size)) {
/* skip space*/
while (isspace(*wr_buf_ptr) && (wr_buf_count < wr_buf_size)) {
wr_buf_ptr++;
wr_buf_count++;
}
if (wr_buf_count == wr_buf_size)
break;
/* skip non-space*/
while ((!isspace(*wr_buf_ptr)) && (wr_buf_count < wr_buf_size)) {
wr_buf_ptr++;
wr_buf_count++;
}
(*param_nums)++;
if (wr_buf_count == wr_buf_size)
break;
}
if (*param_nums > max_param_num)
*param_nums = max_param_num;
wr_buf_ptr = wr_buf; /* reset buf pointer */
wr_buf_count = 0; /* number of char already checked */
while (isspace(*wr_buf_ptr) && (wr_buf_count < wr_buf_size)) {
wr_buf_ptr++;
wr_buf_count++;
}
while (param_index < *param_nums) {
/* after strsep, wr_buf_ptr will be moved to after space */
sub_str = strsep(&wr_buf_ptr, delimiter);
r = kstrtol(sub_str, 16, &(param[param_index]));
if (r)
DRM_DEBUG_DRIVER("string to int convert error code: %d\n", r);
param_index++;
}
return 0;
}
/* function description
* get/ set DP configuration: lane_count, link_rate, spread_spectrum
*
* valid lane count value: 1, 2, 4
* valid link rate value:
* 06h = 1.62Gbps per lane
* 0Ah = 2.7Gbps per lane
* 0Ch = 3.24Gbps per lane
* 14h = 5.4Gbps per lane
* 1Eh = 8.1Gbps per lane
*
* debugfs is located at /sys/kernel/debug/dri/0/DP-x/link_settings
*
* --- to get dp configuration
*
* cat /sys/kernel/debug/dri/0/DP-x/link_settings
*
* It will list current, verified, reported, preferred dp configuration.
* current -- for current video mode
* verified --- maximum configuration which pass link training
* reported --- DP rx report caps (DPCD register offset 0, 1 2)
* preferred --- user force settings
*
* --- set (or force) dp configuration
*
* echo <lane_count> <link_rate> > link_settings
*
* for example, to force to 2 lane, 2.7GHz,
* echo 4 0xa > /sys/kernel/debug/dri/0/DP-x/link_settings
*
* spread_spectrum could not be changed dynamically.
*
* in case invalid lane count, link rate are force, no hw programming will be
* done. please check link settings after force operation to see if HW get
* programming.
*
* cat /sys/kernel/debug/dri/0/DP-x/link_settings
*
* check current and preferred settings.
*
*/
static ssize_t dp_link_settings_read(struct file *f, char __user *buf,
size_t size, loff_t *pos)
{
struct amdgpu_dm_connector *connector = file_inode(f)->i_private;
struct dc_link *link = connector->dc_link;
char *rd_buf = NULL;
char *rd_buf_ptr = NULL;
const uint32_t rd_buf_size = 100;
uint32_t result = 0;
uint8_t str_len = 0;
int r;
if (*pos & 3 || size & 3)
return -EINVAL;
rd_buf = kcalloc(rd_buf_size, sizeof(char), GFP_KERNEL);
if (!rd_buf)
return 0;
rd_buf_ptr = rd_buf;
str_len = strlen("Current: %d 0x%x %d ");
snprintf(rd_buf_ptr, str_len, "Current: %d 0x%x %d ",
link->cur_link_settings.lane_count,
link->cur_link_settings.link_rate,
link->cur_link_settings.link_spread);
rd_buf_ptr += str_len;
str_len = strlen("Verified: %d 0x%x %d ");
snprintf(rd_buf_ptr, str_len, "Verified: %d 0x%x %d ",
link->verified_link_cap.lane_count,
link->verified_link_cap.link_rate,
link->verified_link_cap.link_spread);
rd_buf_ptr += str_len;
str_len = strlen("Reported: %d 0x%x %d ");
snprintf(rd_buf_ptr, str_len, "Reported: %d 0x%x %d ",
link->reported_link_cap.lane_count,
link->reported_link_cap.link_rate,
link->reported_link_cap.link_spread);
rd_buf_ptr += str_len;
str_len = strlen("Preferred: %d 0x%x %d ");
snprintf(rd_buf_ptr, str_len, "Preferred: %d 0x%x %d\n",
link->preferred_link_setting.lane_count,
link->preferred_link_setting.link_rate,
link->preferred_link_setting.link_spread);
while (size) {
if (*pos >= rd_buf_size)
break;
r = put_user(*(rd_buf + result), buf);
if (r) {
kfree(rd_buf);
return r; /* r = -EFAULT */
}
buf += 1;
size -= 1;
*pos += 1;
result += 1;
}
kfree(rd_buf);
return result;
}
static ssize_t dp_link_settings_write(struct file *f, const char __user *buf,
size_t size, loff_t *pos)
{
struct amdgpu_dm_connector *connector = file_inode(f)->i_private;
struct dc_link *link = connector->dc_link;
struct amdgpu_device *adev = drm_to_adev(connector->base.dev);
struct dc *dc = (struct dc *)link->dc;
struct dc_link_settings prefer_link_settings;
char *wr_buf = NULL;
const uint32_t wr_buf_size = 40;
/* 0: lane_count; 1: link_rate */
int max_param_num = 2;
uint8_t param_nums = 0;
long param[2];
bool valid_input = true;
if (size == 0)
return -EINVAL;
wr_buf = kcalloc(wr_buf_size, sizeof(char), GFP_KERNEL);
if (!wr_buf)
return -ENOSPC;
if (parse_write_buffer_into_params(wr_buf, wr_buf_size,
(long *)param, buf,
max_param_num,
¶m_nums)) {
kfree(wr_buf);
return -EINVAL;
}
if (param_nums <= 0) {
kfree(wr_buf);
DRM_DEBUG_DRIVER("user data not be read\n");
return -EINVAL;
}
switch (param[0]) {
case LANE_COUNT_ONE:
case LANE_COUNT_TWO:
case LANE_COUNT_FOUR:
break;
default:
valid_input = false;
break;
}
switch (param[1]) {
case LINK_RATE_LOW:
case LINK_RATE_HIGH:
case LINK_RATE_RBR2:
case LINK_RATE_HIGH2:
case LINK_RATE_HIGH3:
case LINK_RATE_UHBR10:
case LINK_RATE_UHBR13_5:
case LINK_RATE_UHBR20:
break;
default:
valid_input = false;
break;
}
if (!valid_input) {
kfree(wr_buf);
DRM_DEBUG_DRIVER("Invalid Input value No HW will be programmed\n");
mutex_lock(&adev->dm.dc_lock);
dc_link_set_preferred_training_settings(dc, NULL, NULL, link, false);
mutex_unlock(&adev->dm.dc_lock);
return size;
}
/* save user force lane_count, link_rate to preferred settings
* spread spectrum will not be changed
*/
prefer_link_settings.link_spread = link->cur_link_settings.link_spread;
prefer_link_settings.use_link_rate_set = false;
prefer_link_settings.lane_count = param[0];
prefer_link_settings.link_rate = param[1];
mutex_lock(&adev->dm.dc_lock);
dc_link_set_preferred_training_settings(dc, &prefer_link_settings, NULL, link, false);
mutex_unlock(&adev->dm.dc_lock);
kfree(wr_buf);
return size;
}
static bool dp_mst_is_end_device(struct amdgpu_dm_connector *aconnector)
{
bool is_end_device = false;
struct drm_dp_mst_topology_mgr *mgr = NULL;
struct drm_dp_mst_port *port = NULL;
if (aconnector->mst_root && aconnector->mst_root->mst_mgr.mst_state) {
mgr = &aconnector->mst_root->mst_mgr;
port = aconnector->mst_output_port;
drm_modeset_lock(&mgr->base.lock, NULL);
if (port->pdt == DP_PEER_DEVICE_SST_SINK ||
port->pdt == DP_PEER_DEVICE_DP_LEGACY_CONV)
is_end_device = true;
drm_modeset_unlock(&mgr->base.lock);
}
return is_end_device;
}
/* Change MST link setting
*
* valid lane count value: 1, 2, 4
* valid link rate value:
* 06h = 1.62Gbps per lane
* 0Ah = 2.7Gbps per lane
* 0Ch = 3.24Gbps per lane
* 14h = 5.4Gbps per lane
* 1Eh = 8.1Gbps per lane
* 3E8h = 10.0Gbps per lane
* 546h = 13.5Gbps per lane
* 7D0h = 20.0Gbps per lane
*
* debugfs is located at /sys/kernel/debug/dri/0/DP-x/mst_link_settings
*
* for example, to force to 2 lane, 10.0GHz,
* echo 2 0x3e8 > /sys/kernel/debug/dri/0/DP-x/mst_link_settings
*
* Valid input will trigger hotplug event to get new link setting applied
* Invalid input will trigger training setting reset
*
* The usage can be referred to link_settings entry
*
*/
static ssize_t dp_mst_link_setting(struct file *f, const char __user *buf,
size_t size, loff_t *pos)
{
struct amdgpu_dm_connector *aconnector = file_inode(f)->i_private;
struct dc_link *link = aconnector->dc_link;
struct amdgpu_device *adev = drm_to_adev(aconnector->base.dev);
struct dc *dc = (struct dc *)link->dc;
struct dc_link_settings prefer_link_settings;
char *wr_buf = NULL;
const uint32_t wr_buf_size = 40;
/* 0: lane_count; 1: link_rate */
int max_param_num = 2;
uint8_t param_nums = 0;
long param[2];
bool valid_input = true;
if (!dp_mst_is_end_device(aconnector))
return -EINVAL;
if (size == 0)
return -EINVAL;
wr_buf = kcalloc(wr_buf_size, sizeof(char), GFP_KERNEL);
if (!wr_buf)
return -ENOSPC;
if (parse_write_buffer_into_params(wr_buf, wr_buf_size,
(long *)param, buf,
max_param_num,
¶m_nums)) {
kfree(wr_buf);
return -EINVAL;
}
if (param_nums <= 0) {
kfree(wr_buf);
DRM_DEBUG_DRIVER("user data not be read\n");
return -EINVAL;
}
switch (param[0]) {
case LANE_COUNT_ONE:
case LANE_COUNT_TWO:
case LANE_COUNT_FOUR:
break;
default:
valid_input = false;
break;
}
switch (param[1]) {
case LINK_RATE_LOW:
case LINK_RATE_HIGH:
case LINK_RATE_RBR2:
case LINK_RATE_HIGH2:
case LINK_RATE_HIGH3:
case LINK_RATE_UHBR10:
case LINK_RATE_UHBR13_5:
case LINK_RATE_UHBR20:
break;
default:
valid_input = false;
break;
}
if (!valid_input) {
kfree(wr_buf);
DRM_DEBUG_DRIVER("Invalid Input value No HW will be programmed\n");
mutex_lock(&adev->dm.dc_lock);
dc_link_set_preferred_training_settings(dc, NULL, NULL, link, false);
mutex_unlock(&adev->dm.dc_lock);
return -EINVAL;
}
/* save user force lane_count, link_rate to preferred settings
* spread spectrum will not be changed
*/
prefer_link_settings.link_spread = link->cur_link_settings.link_spread;
prefer_link_settings.use_link_rate_set = false;
prefer_link_settings.lane_count = param[0];
prefer_link_settings.link_rate = param[1];
/* skip immediate retrain, and train to new link setting after hotplug event triggered */
mutex_lock(&adev->dm.dc_lock);
dc_link_set_preferred_training_settings(dc, &prefer_link_settings, NULL, link, true);
mutex_unlock(&adev->dm.dc_lock);
mutex_lock(&aconnector->base.dev->mode_config.mutex);
aconnector->base.force = DRM_FORCE_OFF;
mutex_unlock(&aconnector->base.dev->mode_config.mutex);
drm_kms_helper_hotplug_event(aconnector->base.dev);
msleep(100);
mutex_lock(&aconnector->base.dev->mode_config.mutex);
aconnector->base.force = DRM_FORCE_UNSPECIFIED;
mutex_unlock(&aconnector->base.dev->mode_config.mutex);
drm_kms_helper_hotplug_event(aconnector->base.dev);
kfree(wr_buf);
return size;
}
/* function: get current DP PHY settings: voltage swing, pre-emphasis,
* post-cursor2 (defined by VESA DP specification)
*
* valid values
* voltage swing: 0,1,2,3
* pre-emphasis : 0,1,2,3
* post cursor2 : 0,1,2,3
*
*
* how to use this debugfs
*
* debugfs is located at /sys/kernel/debug/dri/0/DP-x
*
* there will be directories, like DP-1, DP-2,DP-3, etc. for DP display
*
* To figure out which DP-x is the display for DP to be check,
* cd DP-x
* ls -ll
* There should be debugfs file, like link_settings, phy_settings.
* cat link_settings
* from lane_count, link_rate to figure which DP-x is for display to be worked
* on
*
* To get current DP PHY settings,
* cat phy_settings
*
* To change DP PHY settings,
* echo <voltage_swing> <pre-emphasis> <post_cursor2> > phy_settings
* for examle, to change voltage swing to 2, pre-emphasis to 3, post_cursor2 to
* 0,
* echo 2 3 0 > phy_settings
*
* To check if change be applied, get current phy settings by
* cat phy_settings
*
* In case invalid values are set by user, like
* echo 1 4 0 > phy_settings
*
* HW will NOT be programmed by these settings.
* cat phy_settings will show the previous valid settings.
*/
static ssize_t dp_phy_settings_read(struct file *f, char __user *buf,
size_t size, loff_t *pos)
{
struct amdgpu_dm_connector *connector = file_inode(f)->i_private;
struct dc_link *link = connector->dc_link;
char *rd_buf = NULL;
const uint32_t rd_buf_size = 20;
uint32_t result = 0;
int r;
if (*pos & 3 || size & 3)
return -EINVAL;
rd_buf = kcalloc(rd_buf_size, sizeof(char), GFP_KERNEL);
if (!rd_buf)
return -EINVAL;
snprintf(rd_buf, rd_buf_size, " %d %d %d\n",
link->cur_lane_setting[0].VOLTAGE_SWING,
link->cur_lane_setting[0].PRE_EMPHASIS,
link->cur_lane_setting[0].POST_CURSOR2);
while (size) {
if (*pos >= rd_buf_size)
break;
r = put_user((*(rd_buf + result)), buf);
if (r) {
kfree(rd_buf);
return r; /* r = -EFAULT */
}
buf += 1;
size -= 1;
*pos += 1;
result += 1;
}
kfree(rd_buf);
return result;
}
static int dp_lttpr_status_show(struct seq_file *m, void *unused)
{
struct drm_connector *connector = m->private;
struct amdgpu_dm_connector *aconnector =
to_amdgpu_dm_connector(connector);
struct dc_lttpr_caps caps = aconnector->dc_link->dpcd_caps.lttpr_caps;
if (connector->status != connector_status_connected)
return -ENODEV;
seq_printf(m, "phy repeater count: %u (raw: 0x%x)\n",
dp_parse_lttpr_repeater_count(caps.phy_repeater_cnt),
caps.phy_repeater_cnt);
seq_puts(m, "phy repeater mode: ");
switch (caps.mode) {
case DP_PHY_REPEATER_MODE_TRANSPARENT:
seq_puts(m, "transparent");
break;
case DP_PHY_REPEATER_MODE_NON_TRANSPARENT:
seq_puts(m, "non-transparent");
break;
case 0x00:
seq_puts(m, "non lttpr");
break;
default:
seq_printf(m, "read error (raw: 0x%x)", caps.mode);
break;
}
seq_puts(m, "\n");
return 0;
}
static ssize_t dp_phy_settings_write(struct file *f, const char __user *buf,
size_t size, loff_t *pos)
{
struct amdgpu_dm_connector *connector = file_inode(f)->i_private;
struct dc_link *link = connector->dc_link;
struct dc *dc = (struct dc *)link->dc;
char *wr_buf = NULL;
uint32_t wr_buf_size = 40;
long param[3];
bool use_prefer_link_setting;
struct link_training_settings link_lane_settings;
int max_param_num = 3;
uint8_t param_nums = 0;
int r = 0;
if (size == 0)
return -EINVAL;
wr_buf = kcalloc(wr_buf_size, sizeof(char), GFP_KERNEL);
if (!wr_buf)
return -ENOSPC;
if (parse_write_buffer_into_params(wr_buf, wr_buf_size,
(long *)param, buf,
max_param_num,
¶m_nums)) {
kfree(wr_buf);
return -EINVAL;
}
if (param_nums <= 0) {
kfree(wr_buf);
DRM_DEBUG_DRIVER("user data not be read\n");
return -EINVAL;
}
if ((param[0] > VOLTAGE_SWING_MAX_LEVEL) ||
(param[1] > PRE_EMPHASIS_MAX_LEVEL) ||
(param[2] > POST_CURSOR2_MAX_LEVEL)) {
kfree(wr_buf);
DRM_DEBUG_DRIVER("Invalid Input No HW will be programmed\n");
return size;
}
/* get link settings: lane count, link rate */
use_prefer_link_setting =
((link->preferred_link_setting.link_rate != LINK_RATE_UNKNOWN) &&
(link->test_pattern_enabled));
memset(&link_lane_settings, 0, sizeof(link_lane_settings));
if (use_prefer_link_setting) {
link_lane_settings.link_settings.lane_count =
link->preferred_link_setting.lane_count;
link_lane_settings.link_settings.link_rate =
link->preferred_link_setting.link_rate;
link_lane_settings.link_settings.link_spread =
link->preferred_link_setting.link_spread;
} else {
link_lane_settings.link_settings.lane_count =
link->cur_link_settings.lane_count;
link_lane_settings.link_settings.link_rate =
link->cur_link_settings.link_rate;
link_lane_settings.link_settings.link_spread =
link->cur_link_settings.link_spread;
}
/* apply phy settings from user */
for (r = 0; r < link_lane_settings.link_settings.lane_count; r++) {
link_lane_settings.hw_lane_settings[r].VOLTAGE_SWING =
(enum dc_voltage_swing) (param[0]);
link_lane_settings.hw_lane_settings[r].PRE_EMPHASIS =
(enum dc_pre_emphasis) (param[1]);
link_lane_settings.hw_lane_settings[r].POST_CURSOR2 =
(enum dc_post_cursor2) (param[2]);
}
/* program ASIC registers and DPCD registers */
dc_link_set_drive_settings(dc, &link_lane_settings, link);
kfree(wr_buf);
return size;
}
/* function description
*
* set PHY layer or Link layer test pattern
* PHY test pattern is used for PHY SI check.
* Link layer test will not affect PHY SI.
*
* Reset Test Pattern:
* 0 = DP_TEST_PATTERN_VIDEO_MODE
*
* PHY test pattern supported:
* 1 = DP_TEST_PATTERN_D102
* 2 = DP_TEST_PATTERN_SYMBOL_ERROR
* 3 = DP_TEST_PATTERN_PRBS7
* 4 = DP_TEST_PATTERN_80BIT_CUSTOM
* 5 = DP_TEST_PATTERN_CP2520_1
* 6 = DP_TEST_PATTERN_CP2520_2 = DP_TEST_PATTERN_HBR2_COMPLIANCE_EYE
* 7 = DP_TEST_PATTERN_CP2520_3
*
* DP PHY Link Training Patterns
* 8 = DP_TEST_PATTERN_TRAINING_PATTERN1
* 9 = DP_TEST_PATTERN_TRAINING_PATTERN2
* a = DP_TEST_PATTERN_TRAINING_PATTERN3
* b = DP_TEST_PATTERN_TRAINING_PATTERN4
*
* DP Link Layer Test pattern
* c = DP_TEST_PATTERN_COLOR_SQUARES
* d = DP_TEST_PATTERN_COLOR_SQUARES_CEA
* e = DP_TEST_PATTERN_VERTICAL_BARS
* f = DP_TEST_PATTERN_HORIZONTAL_BARS
* 10= DP_TEST_PATTERN_COLOR_RAMP
*
* debugfs phy_test_pattern is located at /syskernel/debug/dri/0/DP-x
*
* --- set test pattern
* echo <test pattern #> > test_pattern
*
* If test pattern # is not supported, NO HW programming will be done.
* for DP_TEST_PATTERN_80BIT_CUSTOM, it needs extra 10 bytes of data
* for the user pattern. input 10 bytes data are separated by space
*
* echo 0x4 0x11 0x22 0x33 0x44 0x55 0x66 0x77 0x88 0x99 0xaa > test_pattern
*
* --- reset test pattern
* echo 0 > test_pattern
*
* --- HPD detection is disabled when set PHY test pattern
*
* when PHY test pattern (pattern # within [1,7]) is set, HPD pin of HW ASIC
* is disable. User could unplug DP display from DP connected and plug scope to
* check test pattern PHY SI.
* If there is need unplug scope and plug DP display back, do steps below:
* echo 0 > phy_test_pattern
* unplug scope
* plug DP display.
*
* "echo 0 > phy_test_pattern" will re-enable HPD pin again so that video sw
* driver could detect "unplug scope" and "plug DP display"
*/
static ssize_t dp_phy_test_pattern_debugfs_write(struct file *f, const char __user *buf,
size_t size, loff_t *pos)
{
struct amdgpu_dm_connector *connector = file_inode(f)->i_private;
struct dc_link *link = connector->dc_link;
char *wr_buf = NULL;
uint32_t wr_buf_size = 100;
long param[11] = {0x0};
int max_param_num = 11;
enum dp_test_pattern test_pattern = DP_TEST_PATTERN_UNSUPPORTED;
bool disable_hpd = false;
bool valid_test_pattern = false;
uint8_t param_nums = 0;
/* init with default 80bit custom pattern */
uint8_t custom_pattern[10] = {
0x1f, 0x7c, 0xf0, 0xc1, 0x07,
0x1f, 0x7c, 0xf0, 0xc1, 0x07
};
struct dc_link_settings prefer_link_settings = {LANE_COUNT_UNKNOWN,
LINK_RATE_UNKNOWN, LINK_SPREAD_DISABLED};
struct dc_link_settings cur_link_settings = {LANE_COUNT_UNKNOWN,
LINK_RATE_UNKNOWN, LINK_SPREAD_DISABLED};
struct link_training_settings link_training_settings;
int i;
if (size == 0)
return -EINVAL;
wr_buf = kcalloc(wr_buf_size, sizeof(char), GFP_KERNEL);
if (!wr_buf)
return -ENOSPC;
if (parse_write_buffer_into_params(wr_buf, wr_buf_size,
(long *)param, buf,
max_param_num,
¶m_nums)) {
kfree(wr_buf);
return -EINVAL;
}
if (param_nums <= 0) {
kfree(wr_buf);
DRM_DEBUG_DRIVER("user data not be read\n");
return -EINVAL;
}
test_pattern = param[0];
switch (test_pattern) {
case DP_TEST_PATTERN_VIDEO_MODE:
case DP_TEST_PATTERN_COLOR_SQUARES:
case DP_TEST_PATTERN_COLOR_SQUARES_CEA:
case DP_TEST_PATTERN_VERTICAL_BARS:
case DP_TEST_PATTERN_HORIZONTAL_BARS:
case DP_TEST_PATTERN_COLOR_RAMP:
valid_test_pattern = true;
break;
case DP_TEST_PATTERN_D102:
case DP_TEST_PATTERN_SYMBOL_ERROR:
case DP_TEST_PATTERN_PRBS7:
case DP_TEST_PATTERN_80BIT_CUSTOM:
case DP_TEST_PATTERN_HBR2_COMPLIANCE_EYE:
case DP_TEST_PATTERN_TRAINING_PATTERN4:
disable_hpd = true;
valid_test_pattern = true;
break;
default:
valid_test_pattern = false;
test_pattern = DP_TEST_PATTERN_UNSUPPORTED;
break;
}
if (!valid_test_pattern) {
kfree(wr_buf);
DRM_DEBUG_DRIVER("Invalid Test Pattern Parameters\n");
return size;
}
if (test_pattern == DP_TEST_PATTERN_80BIT_CUSTOM) {
for (i = 0; i < 10; i++) {
if ((uint8_t) param[i + 1] != 0x0)
break;
}
if (i < 10) {
/* not use default value */
for (i = 0; i < 10; i++)
custom_pattern[i] = (uint8_t) param[i + 1];
}
}
/* Usage: set DP physical test pattern using debugfs with normal DP
* panel. Then plug out DP panel and connect a scope to measure
* For normal video mode and test pattern generated from CRCT,
* they are visibile to user. So do not disable HPD.
* Video Mode is also set to clear the test pattern, so enable HPD
* because it might have been disabled after a test pattern was set.
* AUX depends on HPD * sequence dependent, do not move!
*/
if (!disable_hpd)
dc_link_enable_hpd(link);
prefer_link_settings.lane_count = link->verified_link_cap.lane_count;
prefer_link_settings.link_rate = link->verified_link_cap.link_rate;
prefer_link_settings.link_spread = link->verified_link_cap.link_spread;
cur_link_settings.lane_count = link->cur_link_settings.lane_count;
cur_link_settings.link_rate = link->cur_link_settings.link_rate;
cur_link_settings.link_spread = link->cur_link_settings.link_spread;
link_training_settings.link_settings = cur_link_settings;
if (test_pattern != DP_TEST_PATTERN_VIDEO_MODE) {
if (prefer_link_settings.lane_count != LANE_COUNT_UNKNOWN &&
prefer_link_settings.link_rate != LINK_RATE_UNKNOWN &&
(prefer_link_settings.lane_count != cur_link_settings.lane_count ||
prefer_link_settings.link_rate != cur_link_settings.link_rate))
link_training_settings.link_settings = prefer_link_settings;
}
for (i = 0; i < (unsigned int)(link_training_settings.link_settings.lane_count); i++)
link_training_settings.hw_lane_settings[i] = link->cur_lane_setting[i];
dc_link_dp_set_test_pattern(
link,
test_pattern,
DP_TEST_PATTERN_COLOR_SPACE_RGB,
&link_training_settings,
custom_pattern,
10);
/* Usage: Set DP physical test pattern using AMDDP with normal DP panel
* Then plug out DP panel and connect a scope to measure DP PHY signal.
* Need disable interrupt to avoid SW driver disable DP output. This is
* done after the test pattern is set.
*/
if (valid_test_pattern && disable_hpd)
dc_link_disable_hpd(link);
kfree(wr_buf);
return size;
}
/*
* Returns the DMCUB tracebuffer contents.
* Example usage: cat /sys/kernel/debug/dri/0/amdgpu_dm_dmub_tracebuffer
*/
static int dmub_tracebuffer_show(struct seq_file *m, void *data)
{
struct amdgpu_device *adev = m->private;
struct dmub_srv_fb_info *fb_info = adev->dm.dmub_fb_info;
struct dmub_debugfs_trace_entry *entries;
uint8_t *tbuf_base;
uint32_t tbuf_size, max_entries, num_entries, i;
if (!fb_info)
return 0;
tbuf_base = (uint8_t *)fb_info->fb[DMUB_WINDOW_5_TRACEBUFF].cpu_addr;
if (!tbuf_base)
return 0;
tbuf_size = fb_info->fb[DMUB_WINDOW_5_TRACEBUFF].size;
max_entries = (tbuf_size - sizeof(struct dmub_debugfs_trace_header)) /
sizeof(struct dmub_debugfs_trace_entry);
num_entries =
((struct dmub_debugfs_trace_header *)tbuf_base)->entry_count;
num_entries = min(num_entries, max_entries);
entries = (struct dmub_debugfs_trace_entry
*)(tbuf_base +
sizeof(struct dmub_debugfs_trace_header));
for (i = 0; i < num_entries; ++i) {
struct dmub_debugfs_trace_entry *entry = &entries[i];
seq_printf(m,
"trace_code=%u tick_count=%u param0=%u param1=%u\n",
entry->trace_code, entry->tick_count, entry->param0,
entry->param1);
}
return 0;
}
/*
* Returns the DMCUB firmware state contents.
* Example usage: cat /sys/kernel/debug/dri/0/amdgpu_dm_dmub_fw_state
*/
static int dmub_fw_state_show(struct seq_file *m, void *data)
{
struct amdgpu_device *adev = m->private;
struct dmub_srv_fb_info *fb_info = adev->dm.dmub_fb_info;
uint8_t *state_base;
uint32_t state_size;
if (!fb_info)
return 0;
state_base = (uint8_t *)fb_info->fb[DMUB_WINDOW_6_FW_STATE].cpu_addr;
if (!state_base)
return 0;
state_size = fb_info->fb[DMUB_WINDOW_6_FW_STATE].size;
return seq_write(m, state_base, state_size);
}
/* replay_capability_show() - show eDP panel replay capability
*
* The read function: replay_capability_show
* Shows if sink and driver has Replay capability or not.
*
* cat /sys/kernel/debug/dri/0/eDP-X/replay_capability
*
* Expected output:
* "Sink support: no\n" - if panel doesn't support Replay
* "Sink support: yes\n" - if panel supports Replay
* "Driver support: no\n" - if driver doesn't support Replay
* "Driver support: yes\n" - if driver supports Replay
*/
static int replay_capability_show(struct seq_file *m, void *data)
{
struct drm_connector *connector = m->private;
struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
struct dc_link *link = aconnector->dc_link;
bool sink_support_replay = false;
bool driver_support_replay = false;
if (!link)
return -ENODEV;
if (link->type == dc_connection_none)
return -ENODEV;
if (!(link->connector_signal & SIGNAL_TYPE_EDP))
return -ENODEV;
/* If Replay is already set to support, skip the checks */
if (link->replay_settings.config.replay_supported) {
sink_support_replay = true;
driver_support_replay = true;
} else if ((amdgpu_dc_debug_mask & DC_DISABLE_REPLAY)) {
sink_support_replay = amdgpu_dm_link_supports_replay(link, aconnector);
} else {
struct dc *dc = link->ctx->dc;
sink_support_replay = amdgpu_dm_link_supports_replay(link, aconnector);
if (dc->ctx->dmub_srv && dc->ctx->dmub_srv->dmub)
driver_support_replay =
(bool)dc->ctx->dmub_srv->dmub->feature_caps.replay_supported;
}
seq_printf(m, "Sink support: %s\n", str_yes_no(sink_support_replay));
seq_printf(m, "Driver support: %s\n", str_yes_no(driver_support_replay));
seq_printf(m, "Config support: %s\n", str_yes_no(link->replay_settings.config.replay_supported));
return 0;
}
/* psr_capability_show() - show eDP panel PSR capability
*
* The read function: sink_psr_capability_show
* Shows if sink has PSR capability or not.
* If yes - the PSR version is appended
*
* cat /sys/kernel/debug/dri/0/eDP-X/psr_capability
*
* Expected output:
* "Sink support: no\n" - if panel doesn't support PSR
* "Sink support: yes [0x01]\n" - if panel supports PSR1
* "Driver support: no\n" - if driver doesn't support PSR
* "Driver support: yes [0x01]\n" - if driver supports PSR1
*/
static int psr_capability_show(struct seq_file *m, void *data)
{
struct drm_connector *connector = m->private;
struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
struct dc_link *link = aconnector->dc_link;
if (!link)
return -ENODEV;
if (link->type == dc_connection_none)
return -ENODEV;
if (!(link->connector_signal & SIGNAL_TYPE_EDP))
return -ENODEV;
seq_printf(m, "Sink support: %s", str_yes_no(link->dpcd_caps.psr_info.psr_version != 0));
if (link->dpcd_caps.psr_info.psr_version)
seq_printf(m, " [0x%02x]", link->dpcd_caps.psr_info.psr_version);
seq_puts(m, "\n");
seq_printf(m, "Driver support: %s", str_yes_no(link->psr_settings.psr_feature_enabled));
if (link->psr_settings.psr_version)
seq_printf(m, " [0x%02x]", link->psr_settings.psr_version);
seq_puts(m, "\n");
return 0;
}
/*
* Returns the current bpc for the crtc.
* Example usage: cat /sys/kernel/debug/dri/0/crtc-0/amdgpu_current_bpc
*/
static int amdgpu_current_bpc_show(struct seq_file *m, void *data)
{
struct drm_crtc *crtc = m->private;
struct drm_device *dev = crtc->dev;
struct dm_crtc_state *dm_crtc_state = NULL;
int res = -ENODEV;
unsigned int bpc;
mutex_lock(&dev->mode_config.mutex);
drm_modeset_lock(&crtc->mutex, NULL);
if (crtc->state == NULL)
goto unlock;
dm_crtc_state = to_dm_crtc_state(crtc->state);
if (dm_crtc_state->stream == NULL)
goto unlock;
switch (dm_crtc_state->stream->timing.display_color_depth) {
case COLOR_DEPTH_666:
bpc = 6;
break;
case COLOR_DEPTH_888:
bpc = 8;
break;
case COLOR_DEPTH_101010:
bpc = 10;
break;
case COLOR_DEPTH_121212:
bpc = 12;
break;
case COLOR_DEPTH_161616:
bpc = 16;
break;
default:
goto unlock;
}
seq_printf(m, "Current: %u\n", bpc);
res = 0;
unlock:
drm_modeset_unlock(&crtc->mutex);
mutex_unlock(&dev->mode_config.mutex);
return res;
}
DEFINE_SHOW_ATTRIBUTE(amdgpu_current_bpc);
/*
* Returns the current colorspace for the crtc.
* Example usage: cat /sys/kernel/debug/dri/0/crtc-0/amdgpu_current_colorspace
*/
static int amdgpu_current_colorspace_show(struct seq_file *m, void *data)
{
struct drm_crtc *crtc = m->private;
struct drm_device *dev = crtc->dev;
struct dm_crtc_state *dm_crtc_state = NULL;
int res = -ENODEV;
mutex_lock(&dev->mode_config.mutex);
drm_modeset_lock(&crtc->mutex, NULL);
if (crtc->state == NULL)
goto unlock;
dm_crtc_state = to_dm_crtc_state(crtc->state);
if (dm_crtc_state->stream == NULL)
goto unlock;
switch (dm_crtc_state->stream->output_color_space) {
case COLOR_SPACE_SRGB:
seq_puts(m, "sRGB");
break;
case COLOR_SPACE_YCBCR601:
case COLOR_SPACE_YCBCR601_LIMITED:
seq_puts(m, "BT601_YCC");
break;
case COLOR_SPACE_YCBCR709:
case COLOR_SPACE_YCBCR709_LIMITED:
seq_puts(m, "BT709_YCC");
break;
case COLOR_SPACE_ADOBERGB:
seq_puts(m, "opRGB");
break;
case COLOR_SPACE_2020_RGB_FULLRANGE:
seq_puts(m, "BT2020_RGB");
break;
case COLOR_SPACE_2020_YCBCR:
seq_puts(m, "BT2020_YCC");
break;
default:
goto unlock;
}
res = 0;
unlock:
drm_modeset_unlock(&crtc->mutex);
mutex_unlock(&dev->mode_config.mutex);
return res;
}
DEFINE_SHOW_ATTRIBUTE(amdgpu_current_colorspace);
/*
* Example usage:
* Disable dsc passthrough, i.e.,: have dsc decoding at converver, not external RX
* echo 1 /sys/kernel/debug/dri/0/DP-1/dsc_disable_passthrough
* Enable dsc passthrough, i.e.,: have dsc passthrough to external RX
* echo 0 /sys/kernel/debug/dri/0/DP-1/dsc_disable_passthrough
*/
static ssize_t dp_dsc_passthrough_set(struct file *f, const char __user *buf,
size_t size, loff_t *pos)
{
struct amdgpu_dm_connector *aconnector = file_inode(f)->i_private;
char *wr_buf = NULL;
uint32_t wr_buf_size = 42;
int max_param_num = 1;
long param;
uint8_t param_nums = 0;
if (size == 0)
return -EINVAL;
wr_buf = kcalloc(wr_buf_size, sizeof(char), GFP_KERNEL);
if (!wr_buf) {
DRM_DEBUG_DRIVER("no memory to allocate write buffer\n");
return -ENOSPC;
}
if (parse_write_buffer_into_params(wr_buf, wr_buf_size,
¶m, buf,
max_param_num,
¶m_nums)) {
kfree(wr_buf);
return -EINVAL;
}
aconnector->dsc_settings.dsc_force_disable_passthrough = param;
kfree(wr_buf);
return 0;
}
/*
* Returns the HDCP capability of the Display (1.4 for now).
*
* NOTE* Not all HDMI displays report their HDCP caps even when they are capable.
* Since its rare for a display to not be HDCP 1.4 capable, we set HDMI as always capable.
*
* Example usage: cat /sys/kernel/debug/dri/0/DP-1/hdcp_sink_capability
* or cat /sys/kernel/debug/dri/0/HDMI-A-1/hdcp_sink_capability
*/
static int hdcp_sink_capability_show(struct seq_file *m, void *data)
{
struct drm_connector *connector = m->private;
struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
bool hdcp_cap, hdcp2_cap;
if (connector->status != connector_status_connected)
return -ENODEV;
seq_printf(m, "%s:%d HDCP version: ", connector->name, connector->base.id);
hdcp_cap = dc_link_is_hdcp14(aconnector->dc_link, aconnector->dc_sink->sink_signal);
hdcp2_cap = dc_link_is_hdcp22(aconnector->dc_link, aconnector->dc_sink->sink_signal);
if (hdcp_cap)
seq_printf(m, "%s ", "HDCP1.4");
if (hdcp2_cap)
seq_printf(m, "%s ", "HDCP2.2");
if (!hdcp_cap && !hdcp2_cap)
seq_printf(m, "%s ", "None");
seq_puts(m, "\n");
return 0;
}
/*
* Returns whether the connected display is internal and not hotpluggable.
* Example usage: cat /sys/kernel/debug/dri/0/DP-1/internal_display
*/
static int internal_display_show(struct seq_file *m, void *data)
{
struct drm_connector *connector = m->private;
struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
struct dc_link *link = aconnector->dc_link;
seq_printf(m, "Internal: %u\n", link->is_internal_display);
return 0;
}
/*
* Returns the number of segments used if ODM Combine mode is enabled.
* Example usage: cat /sys/kernel/debug/dri/0/DP-1/odm_combine_segments
*/
static int odm_combine_segments_show(struct seq_file *m, void *unused)
{
struct drm_connector *connector = m->private;
struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
struct dc_link *link = aconnector->dc_link;
struct pipe_ctx *pipe_ctx = NULL;
int i, segments = -EOPNOTSUPP;
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == link)
break;
}
if (connector->status != connector_status_connected)
return -ENODEV;
if (pipe_ctx != NULL && pipe_ctx->stream_res.tg->funcs->get_odm_combine_segments)
pipe_ctx->stream_res.tg->funcs->get_odm_combine_segments(pipe_ctx->stream_res.tg, &segments);
seq_printf(m, "%d\n", segments);
return 0;
}
/* function description
*
* generic SDP message access for testing
*
* debugfs sdp_message is located at /syskernel/debug/dri/0/DP-x
*
* SDP header
* Hb0 : Secondary-Data Packet ID
* Hb1 : Secondary-Data Packet type
* Hb2 : Secondary-Data-packet-specific header, Byte 0
* Hb3 : Secondary-Data-packet-specific header, Byte 1
*
* for using custom sdp message: input 4 bytes SDP header and 32 bytes raw data
*/
static ssize_t dp_sdp_message_debugfs_write(struct file *f, const char __user *buf,
size_t size, loff_t *pos)
{
int r;
uint8_t data[36] = {0};
struct amdgpu_dm_connector *connector = file_inode(f)->i_private;
struct dm_crtc_state *acrtc_state;
uint32_t write_size = 36;
if (connector->base.status != connector_status_connected)
return -ENODEV;
if (size == 0)
return 0;
acrtc_state = to_dm_crtc_state(connector->base.state->crtc->state);
r = copy_from_user(data, buf, write_size);
write_size -= r;
dc_stream_send_dp_sdp(acrtc_state->stream, data, write_size);
return write_size;
}
/* function: Read link's DSC & FEC capabilities
*
*
* Access it with the following command (you need to specify
* connector like DP-1):
*
* cat /sys/kernel/debug/dri/0/DP-X/dp_dsc_fec_support
*
*/
static int dp_dsc_fec_support_show(struct seq_file *m, void *data)
{
struct drm_connector *connector = m->private;
struct drm_modeset_acquire_ctx ctx;
struct drm_device *dev = connector->dev;
struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
int ret = 0;
bool try_again = false;
bool is_fec_supported = false;
bool is_dsc_supported = false;
struct dpcd_caps dpcd_caps;
drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
do {
try_again = false;
ret = drm_modeset_lock(&dev->mode_config.connection_mutex, &ctx);
if (ret) {
if (ret == -EDEADLK) {
ret = drm_modeset_backoff(&ctx);
if (!ret) {
try_again = true;
continue;
}
}
break;
}
if (connector->status != connector_status_connected) {
ret = -ENODEV;
break;
}
dpcd_caps = aconnector->dc_link->dpcd_caps;
if (aconnector->mst_output_port) {
/* aconnector sets dsc_aux during get_modes call
* if MST connector has it means it can either
* enable DSC on the sink device or on MST branch
* its connected to.
*/
if (aconnector->dsc_aux) {
is_fec_supported = true;
is_dsc_supported = true;
}
} else {
is_fec_supported = dpcd_caps.fec_cap.raw & 0x1;
is_dsc_supported = dpcd_caps.dsc_caps.dsc_basic_caps.raw[0] & 0x1;
}
} while (try_again);
drm_modeset_drop_locks(&ctx);
drm_modeset_acquire_fini(&ctx);
seq_printf(m, "FEC_Sink_Support: %s\n", str_yes_no(is_fec_supported));
seq_printf(m, "DSC_Sink_Support: %s\n", str_yes_no(is_dsc_supported));
return ret;
}
/* function: Trigger virtual HPD redetection on connector
*
* This function will perform link rediscovery, link disable
* and enable, and dm connector state update.
*
* Retrigger HPD on an existing connector by echoing 1 into
* its respectful "trigger_hotplug" debugfs entry:
*
* echo 1 > /sys/kernel/debug/dri/0/DP-X/trigger_hotplug
*
* This function can perform HPD unplug:
*
* echo 0 > /sys/kernel/debug/dri/0/DP-X/trigger_hotplug
*
*/
static ssize_t trigger_hotplug(struct file *f, const char __user *buf,
size_t size, loff_t *pos)
{
struct amdgpu_dm_connector *aconnector = file_inode(f)->i_private;
struct drm_connector *connector = &aconnector->base;
struct dc_link *link = NULL;
struct drm_device *dev = connector->dev;
struct amdgpu_device *adev = drm_to_adev(dev);
enum dc_connection_type new_connection_type = dc_connection_none;
char *wr_buf = NULL;
uint32_t wr_buf_size = 42;
int max_param_num = 1;
long param[1] = {0};
uint8_t param_nums = 0;
bool ret = false;
if (!aconnector->dc_link)
return -EINVAL;
if (size == 0)
return -EINVAL;
wr_buf = kcalloc(wr_buf_size, sizeof(char), GFP_KERNEL);
if (!wr_buf) {
DRM_DEBUG_DRIVER("no memory to allocate write buffer\n");
return -ENOSPC;
}
if (parse_write_buffer_into_params(wr_buf, wr_buf_size,
(long *)param, buf,
max_param_num,
¶m_nums)) {
kfree(wr_buf);
return -EINVAL;
}
kfree(wr_buf);
if (param_nums <= 0) {
DRM_DEBUG_DRIVER("user data not be read\n");
return -EINVAL;
}
mutex_lock(&aconnector->hpd_lock);
/* Don't support for mst end device*/
if (aconnector->mst_root) {
mutex_unlock(&aconnector->hpd_lock);
return -EINVAL;
}
if (param[0] == 1) {
if (!dc_link_detect_connection_type(aconnector->dc_link, &new_connection_type) &&
new_connection_type != dc_connection_none)
goto unlock;
mutex_lock(&adev->dm.dc_lock);
ret = dc_link_detect(aconnector->dc_link, DETECT_REASON_HPD);
mutex_unlock(&adev->dm.dc_lock);
if (!ret)
goto unlock;
amdgpu_dm_update_connector_after_detect(aconnector);
drm_modeset_lock_all(dev);
dm_restore_drm_connector_state(dev, connector);
drm_modeset_unlock_all(dev);
drm_kms_helper_connector_hotplug_event(connector);
} else if (param[0] == 0) {
if (!aconnector->dc_link)
goto unlock;
link = aconnector->dc_link;
if (link->local_sink) {
dc_sink_release(link->local_sink);
link->local_sink = NULL;
}
link->dpcd_sink_count = 0;
link->type = dc_connection_none;
link->dongle_max_pix_clk = 0;
amdgpu_dm_update_connector_after_detect(aconnector);
/* If the aconnector is the root node in mst topology */
if (aconnector->mst_mgr.mst_state == true)
dc_link_reset_cur_dp_mst_topology(link);
drm_modeset_lock_all(dev);
dm_restore_drm_connector_state(dev, connector);
drm_modeset_unlock_all(dev);
drm_kms_helper_connector_hotplug_event(connector);
}
unlock:
mutex_unlock(&aconnector->hpd_lock);
return size;
}
/* function: read DSC status on the connector
*
* The read function: dp_dsc_clock_en_read
* returns current status of DSC clock on the connector.
* The return is a boolean flag: 1 or 0.
*
* Access it with the following command (you need to specify
* connector like DP-1):
*
* cat /sys/kernel/debug/dri/0/DP-X/dsc_clock_en
*
* Expected output:
* 1 - means that DSC is currently enabled
* 0 - means that DSC is disabled
*/
static ssize_t dp_dsc_clock_en_read(struct file *f, char __user *buf,
size_t size, loff_t *pos)
{
char *rd_buf = NULL;
char *rd_buf_ptr = NULL;
struct amdgpu_dm_connector *aconnector = file_inode(f)->i_private;
struct display_stream_compressor *dsc;
struct dcn_dsc_state dsc_state = {0};
const uint32_t rd_buf_size = 10;
struct pipe_ctx *pipe_ctx;
ssize_t result = 0;
int i, r, str_len = 10;
rd_buf = kcalloc(rd_buf_size, sizeof(char), GFP_KERNEL);
if (!rd_buf)
return -ENOMEM;
rd_buf_ptr = rd_buf;
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &aconnector->dc_link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == aconnector->dc_link &&
pipe_ctx->stream->sink &&
pipe_ctx->stream->sink == aconnector->dc_sink)
break;
}
dsc = pipe_ctx->stream_res.dsc;
if (dsc)
dsc->funcs->dsc_read_state(dsc, &dsc_state);
snprintf(rd_buf_ptr, str_len,
"%d\n",
dsc_state.dsc_clock_en);
rd_buf_ptr += str_len;
while (size) {
if (*pos >= rd_buf_size)
break;
r = put_user(*(rd_buf + result), buf);
if (r) {
kfree(rd_buf);
return r; /* r = -EFAULT */
}
buf += 1;
size -= 1;
*pos += 1;
result += 1;
}
kfree(rd_buf);
return result;
}
/* function: write force DSC on the connector
*
* The write function: dp_dsc_clock_en_write
* enables to force DSC on the connector.
* User can write to either force enable or force disable DSC
* on the next modeset or set it to driver default
*
* Accepted inputs:
* 0 - default DSC enablement policy
* 1 - force enable DSC on the connector
* 2 - force disable DSC on the connector (might cause fail in atomic_check)
*
* Writing DSC settings is done with the following command:
* - To force enable DSC (you need to specify
* connector like DP-1):
*
* echo 0x1 > /sys/kernel/debug/dri/0/DP-X/dsc_clock_en
*
* - To return to default state set the flag to zero and
* let driver deal with DSC automatically
* (you need to specify connector like DP-1):
*
* echo 0x0 > /sys/kernel/debug/dri/0/DP-X/dsc_clock_en
*
*/
static ssize_t dp_dsc_clock_en_write(struct file *f, const char __user *buf,
size_t size, loff_t *pos)
{
struct amdgpu_dm_connector *aconnector = file_inode(f)->i_private;
struct drm_connector *connector = &aconnector->base;
struct drm_device *dev = connector->dev;
struct drm_crtc *crtc = NULL;
struct dm_crtc_state *dm_crtc_state = NULL;
struct pipe_ctx *pipe_ctx;
int i;
char *wr_buf = NULL;
uint32_t wr_buf_size = 42;
int max_param_num = 1;
long param[1] = {0};
uint8_t param_nums = 0;
if (size == 0)
return -EINVAL;
wr_buf = kcalloc(wr_buf_size, sizeof(char), GFP_KERNEL);
if (!wr_buf) {
DRM_DEBUG_DRIVER("no memory to allocate write buffer\n");
return -ENOSPC;
}
if (parse_write_buffer_into_params(wr_buf, wr_buf_size,
(long *)param, buf,
max_param_num,
¶m_nums)) {
kfree(wr_buf);
return -EINVAL;
}
if (param_nums <= 0) {
DRM_DEBUG_DRIVER("user data not be read\n");
kfree(wr_buf);
return -EINVAL;
}
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &aconnector->dc_link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == aconnector->dc_link &&
pipe_ctx->stream->sink &&
pipe_ctx->stream->sink == aconnector->dc_sink)
break;
}
if (!pipe_ctx->stream)
goto done;
// Get CRTC state
mutex_lock(&dev->mode_config.mutex);
drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
if (connector->state == NULL)
goto unlock;
crtc = connector->state->crtc;
if (crtc == NULL)
goto unlock;
drm_modeset_lock(&crtc->mutex, NULL);
if (crtc->state == NULL)
goto unlock;
dm_crtc_state = to_dm_crtc_state(crtc->state);
if (dm_crtc_state->stream == NULL)
goto unlock;
if (param[0] == 1)
aconnector->dsc_settings.dsc_force_enable = DSC_CLK_FORCE_ENABLE;
else if (param[0] == 2)
aconnector->dsc_settings.dsc_force_enable = DSC_CLK_FORCE_DISABLE;
else
aconnector->dsc_settings.dsc_force_enable = DSC_CLK_FORCE_DEFAULT;
dm_crtc_state->dsc_force_changed = true;
unlock:
if (crtc)
drm_modeset_unlock(&crtc->mutex);
drm_modeset_unlock(&dev->mode_config.connection_mutex);
mutex_unlock(&dev->mode_config.mutex);
done:
kfree(wr_buf);
return size;
}
/* function: read DSC slice width parameter on the connector
*
* The read function: dp_dsc_slice_width_read
* returns dsc slice width used in the current configuration
* The return is an integer: 0 or other positive number
*
* Access the status with the following command:
*
* cat /sys/kernel/debug/dri/0/DP-X/dsc_slice_width
*
* 0 - means that DSC is disabled
*
* Any other number more than zero represents the
* slice width currently used by DSC in pixels
*
*/
static ssize_t dp_dsc_slice_width_read(struct file *f, char __user *buf,
size_t size, loff_t *pos)
{
char *rd_buf = NULL;
char *rd_buf_ptr = NULL;
struct amdgpu_dm_connector *aconnector = file_inode(f)->i_private;
struct display_stream_compressor *dsc;
struct dcn_dsc_state dsc_state = {0};
const uint32_t rd_buf_size = 100;
struct pipe_ctx *pipe_ctx;
ssize_t result = 0;
int i, r, str_len = 30;
rd_buf = kcalloc(rd_buf_size, sizeof(char), GFP_KERNEL);
if (!rd_buf)
return -ENOMEM;
rd_buf_ptr = rd_buf;
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &aconnector->dc_link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == aconnector->dc_link &&
pipe_ctx->stream->sink &&
pipe_ctx->stream->sink == aconnector->dc_sink)
break;
}
dsc = pipe_ctx->stream_res.dsc;
if (dsc)
dsc->funcs->dsc_read_state(dsc, &dsc_state);
snprintf(rd_buf_ptr, str_len,
"%d\n",
dsc_state.dsc_slice_width);
rd_buf_ptr += str_len;
while (size) {
if (*pos >= rd_buf_size)
break;
r = put_user(*(rd_buf + result), buf);
if (r) {
kfree(rd_buf);
return r; /* r = -EFAULT */
}
buf += 1;
size -= 1;
*pos += 1;
result += 1;
}
kfree(rd_buf);
return result;
}
/* function: write DSC slice width parameter
*
* The write function: dp_dsc_slice_width_write
* overwrites automatically generated DSC configuration
* of slice width.
*
* The user has to write the slice width divisible by the
* picture width.
*
* Also the user has to write width in hexidecimal
* rather than in decimal.
*
* Writing DSC settings is done with the following command:
* - To force overwrite slice width: (example sets to 1920 pixels)
*
* echo 0x780 > /sys/kernel/debug/dri/0/DP-X/dsc_slice_width
*
* - To stop overwriting and let driver find the optimal size,
* set the width to zero:
*
* echo 0x0 > /sys/kernel/debug/dri/0/DP-X/dsc_slice_width
*
*/
static ssize_t dp_dsc_slice_width_write(struct file *f, const char __user *buf,
size_t size, loff_t *pos)
{
struct amdgpu_dm_connector *aconnector = file_inode(f)->i_private;
struct pipe_ctx *pipe_ctx;
struct drm_connector *connector = &aconnector->base;
struct drm_device *dev = connector->dev;
struct drm_crtc *crtc = NULL;
struct dm_crtc_state *dm_crtc_state = NULL;
int i;
char *wr_buf = NULL;
uint32_t wr_buf_size = 42;
int max_param_num = 1;
long param[1] = {0};
uint8_t param_nums = 0;
if (size == 0)
return -EINVAL;
wr_buf = kcalloc(wr_buf_size, sizeof(char), GFP_KERNEL);
if (!wr_buf) {
DRM_DEBUG_DRIVER("no memory to allocate write buffer\n");
return -ENOSPC;
}
if (parse_write_buffer_into_params(wr_buf, wr_buf_size,
(long *)param, buf,
max_param_num,
¶m_nums)) {
kfree(wr_buf);
return -EINVAL;
}
if (param_nums <= 0) {
DRM_DEBUG_DRIVER("user data not be read\n");
kfree(wr_buf);
return -EINVAL;
}
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &aconnector->dc_link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == aconnector->dc_link &&
pipe_ctx->stream->sink &&
pipe_ctx->stream->sink == aconnector->dc_sink)
break;
}
if (!pipe_ctx->stream)
goto done;
// Safely get CRTC state
mutex_lock(&dev->mode_config.mutex);
drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
if (connector->state == NULL)
goto unlock;
crtc = connector->state->crtc;
if (crtc == NULL)
goto unlock;
drm_modeset_lock(&crtc->mutex, NULL);
if (crtc->state == NULL)
goto unlock;
dm_crtc_state = to_dm_crtc_state(crtc->state);
if (dm_crtc_state->stream == NULL)
goto unlock;
if (param[0] > 0)
aconnector->dsc_settings.dsc_num_slices_h = DIV_ROUND_UP(
pipe_ctx->stream->timing.h_addressable,
param[0]);
else
aconnector->dsc_settings.dsc_num_slices_h = 0;
dm_crtc_state->dsc_force_changed = true;
unlock:
if (crtc)
drm_modeset_unlock(&crtc->mutex);
drm_modeset_unlock(&dev->mode_config.connection_mutex);
mutex_unlock(&dev->mode_config.mutex);
done:
kfree(wr_buf);
return size;
}
/* function: read DSC slice height parameter on the connector
*
* The read function: dp_dsc_slice_height_read
* returns dsc slice height used in the current configuration
* The return is an integer: 0 or other positive number
*
* Access the status with the following command:
*
* cat /sys/kernel/debug/dri/0/DP-X/dsc_slice_height
*
* 0 - means that DSC is disabled
*
* Any other number more than zero represents the
* slice height currently used by DSC in pixels
*
*/
static ssize_t dp_dsc_slice_height_read(struct file *f, char __user *buf,
size_t size, loff_t *pos)
{
char *rd_buf = NULL;
char *rd_buf_ptr = NULL;
struct amdgpu_dm_connector *aconnector = file_inode(f)->i_private;
struct display_stream_compressor *dsc;
struct dcn_dsc_state dsc_state = {0};
const uint32_t rd_buf_size = 100;
struct pipe_ctx *pipe_ctx;
ssize_t result = 0;
int i, r, str_len = 30;
rd_buf = kcalloc(rd_buf_size, sizeof(char), GFP_KERNEL);
if (!rd_buf)
return -ENOMEM;
rd_buf_ptr = rd_buf;
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &aconnector->dc_link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == aconnector->dc_link &&
pipe_ctx->stream->sink &&
pipe_ctx->stream->sink == aconnector->dc_sink)
break;
}
dsc = pipe_ctx->stream_res.dsc;
if (dsc)
dsc->funcs->dsc_read_state(dsc, &dsc_state);
snprintf(rd_buf_ptr, str_len,
"%d\n",
dsc_state.dsc_slice_height);
rd_buf_ptr += str_len;
while (size) {
if (*pos >= rd_buf_size)
break;
r = put_user(*(rd_buf + result), buf);
if (r) {
kfree(rd_buf);
return r; /* r = -EFAULT */
}
buf += 1;
size -= 1;
*pos += 1;
result += 1;
}
kfree(rd_buf);
return result;
}
/* function: write DSC slice height parameter
*
* The write function: dp_dsc_slice_height_write
* overwrites automatically generated DSC configuration
* of slice height.
*
* The user has to write the slice height divisible by the
* picture height.
*
* Also the user has to write height in hexidecimal
* rather than in decimal.
*
* Writing DSC settings is done with the following command:
* - To force overwrite slice height (example sets to 128 pixels):
*
* echo 0x80 > /sys/kernel/debug/dri/0/DP-X/dsc_slice_height
*
* - To stop overwriting and let driver find the optimal size,
* set the height to zero:
*
* echo 0x0 > /sys/kernel/debug/dri/0/DP-X/dsc_slice_height
*
*/
static ssize_t dp_dsc_slice_height_write(struct file *f, const char __user *buf,
size_t size, loff_t *pos)
{
struct amdgpu_dm_connector *aconnector = file_inode(f)->i_private;
struct drm_connector *connector = &aconnector->base;
struct drm_device *dev = connector->dev;
struct drm_crtc *crtc = NULL;
struct dm_crtc_state *dm_crtc_state = NULL;
struct pipe_ctx *pipe_ctx;
int i;
char *wr_buf = NULL;
uint32_t wr_buf_size = 42;
int max_param_num = 1;
uint8_t param_nums = 0;
long param[1] = {0};
if (size == 0)
return -EINVAL;
wr_buf = kcalloc(wr_buf_size, sizeof(char), GFP_KERNEL);
if (!wr_buf) {
DRM_DEBUG_DRIVER("no memory to allocate write buffer\n");
return -ENOSPC;
}
if (parse_write_buffer_into_params(wr_buf, wr_buf_size,
(long *)param, buf,
max_param_num,
¶m_nums)) {
kfree(wr_buf);
return -EINVAL;
}
if (param_nums <= 0) {
DRM_DEBUG_DRIVER("user data not be read\n");
kfree(wr_buf);
return -EINVAL;
}
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &aconnector->dc_link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == aconnector->dc_link &&
pipe_ctx->stream->sink &&
pipe_ctx->stream->sink == aconnector->dc_sink)
break;
}
if (!pipe_ctx->stream)
goto done;
// Get CRTC state
mutex_lock(&dev->mode_config.mutex);
drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
if (connector->state == NULL)
goto unlock;
crtc = connector->state->crtc;
if (crtc == NULL)
goto unlock;
drm_modeset_lock(&crtc->mutex, NULL);
if (crtc->state == NULL)
goto unlock;
dm_crtc_state = to_dm_crtc_state(crtc->state);
if (dm_crtc_state->stream == NULL)
goto unlock;
if (param[0] > 0)
aconnector->dsc_settings.dsc_num_slices_v = DIV_ROUND_UP(
pipe_ctx->stream->timing.v_addressable,
param[0]);
else
aconnector->dsc_settings.dsc_num_slices_v = 0;
dm_crtc_state->dsc_force_changed = true;
unlock:
if (crtc)
drm_modeset_unlock(&crtc->mutex);
drm_modeset_unlock(&dev->mode_config.connection_mutex);
mutex_unlock(&dev->mode_config.mutex);
done:
kfree(wr_buf);
return size;
}
/* function: read DSC target rate on the connector in bits per pixel
*
* The read function: dp_dsc_bits_per_pixel_read
* returns target rate of compression in bits per pixel
* The return is an integer: 0 or other positive integer
*
* Access it with the following command:
*
* cat /sys/kernel/debug/dri/0/DP-X/dsc_bits_per_pixel
*
* 0 - means that DSC is disabled
*/
static ssize_t dp_dsc_bits_per_pixel_read(struct file *f, char __user *buf,
size_t size, loff_t *pos)
{
char *rd_buf = NULL;
char *rd_buf_ptr = NULL;
struct amdgpu_dm_connector *aconnector = file_inode(f)->i_private;
struct display_stream_compressor *dsc;
struct dcn_dsc_state dsc_state = {0};
const uint32_t rd_buf_size = 100;
struct pipe_ctx *pipe_ctx;
ssize_t result = 0;
int i, r, str_len = 30;
rd_buf = kcalloc(rd_buf_size, sizeof(char), GFP_KERNEL);
if (!rd_buf)
return -ENOMEM;
rd_buf_ptr = rd_buf;
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &aconnector->dc_link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == aconnector->dc_link &&
pipe_ctx->stream->sink &&
pipe_ctx->stream->sink == aconnector->dc_sink)
break;
}
dsc = pipe_ctx->stream_res.dsc;
if (dsc)
dsc->funcs->dsc_read_state(dsc, &dsc_state);
snprintf(rd_buf_ptr, str_len,
"%d\n",
dsc_state.dsc_bits_per_pixel);
rd_buf_ptr += str_len;
while (size) {
if (*pos >= rd_buf_size)
break;
r = put_user(*(rd_buf + result), buf);
if (r) {
kfree(rd_buf);
return r; /* r = -EFAULT */
}
buf += 1;
size -= 1;
*pos += 1;
result += 1;
}
kfree(rd_buf);
return result;
}
/* function: write DSC target rate in bits per pixel
*
* The write function: dp_dsc_bits_per_pixel_write
* overwrites automatically generated DSC configuration
* of DSC target bit rate.
*
* Also the user has to write bpp in hexidecimal
* rather than in decimal.
*
* Writing DSC settings is done with the following command:
* - To force overwrite rate (example sets to 256 bpp x 1/16):
*
* echo 0x100 > /sys/kernel/debug/dri/0/DP-X/dsc_bits_per_pixel
*
* - To stop overwriting and let driver find the optimal rate,
* set the rate to zero:
*
* echo 0x0 > /sys/kernel/debug/dri/0/DP-X/dsc_bits_per_pixel
*
*/
static ssize_t dp_dsc_bits_per_pixel_write(struct file *f, const char __user *buf,
size_t size, loff_t *pos)
{
struct amdgpu_dm_connector *aconnector = file_inode(f)->i_private;
struct drm_connector *connector = &aconnector->base;
struct drm_device *dev = connector->dev;
struct drm_crtc *crtc = NULL;
struct dm_crtc_state *dm_crtc_state = NULL;
struct pipe_ctx *pipe_ctx;
int i;
char *wr_buf = NULL;
uint32_t wr_buf_size = 42;
int max_param_num = 1;
uint8_t param_nums = 0;
long param[1] = {0};
if (size == 0)
return -EINVAL;
wr_buf = kcalloc(wr_buf_size, sizeof(char), GFP_KERNEL);
if (!wr_buf) {
DRM_DEBUG_DRIVER("no memory to allocate write buffer\n");
return -ENOSPC;
}
if (parse_write_buffer_into_params(wr_buf, wr_buf_size,
(long *)param, buf,
max_param_num,
¶m_nums)) {
kfree(wr_buf);
return -EINVAL;
}
if (param_nums <= 0) {
DRM_DEBUG_DRIVER("user data not be read\n");
kfree(wr_buf);
return -EINVAL;
}
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &aconnector->dc_link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == aconnector->dc_link &&
pipe_ctx->stream->sink &&
pipe_ctx->stream->sink == aconnector->dc_sink)
break;
}
if (!pipe_ctx->stream)
goto done;
// Get CRTC state
mutex_lock(&dev->mode_config.mutex);
drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
if (connector->state == NULL)
goto unlock;
crtc = connector->state->crtc;
if (crtc == NULL)
goto unlock;
drm_modeset_lock(&crtc->mutex, NULL);
if (crtc->state == NULL)
goto unlock;
dm_crtc_state = to_dm_crtc_state(crtc->state);
if (dm_crtc_state->stream == NULL)
goto unlock;
aconnector->dsc_settings.dsc_bits_per_pixel = param[0];
dm_crtc_state->dsc_force_changed = true;
unlock:
if (crtc)
drm_modeset_unlock(&crtc->mutex);
drm_modeset_unlock(&dev->mode_config.connection_mutex);
mutex_unlock(&dev->mode_config.mutex);
done:
kfree(wr_buf);
return size;
}
/* function: read DSC picture width parameter on the connector
*
* The read function: dp_dsc_pic_width_read
* returns dsc picture width used in the current configuration
* It is the same as h_addressable of the current
* display's timing
* The return is an integer: 0 or other positive integer
* If 0 then DSC is disabled.
*
* Access it with the following command:
*
* cat /sys/kernel/debug/dri/0/DP-X/dsc_pic_width
*
* 0 - means that DSC is disabled
*/
static ssize_t dp_dsc_pic_width_read(struct file *f, char __user *buf,
size_t size, loff_t *pos)
{
char *rd_buf = NULL;
char *rd_buf_ptr = NULL;
struct amdgpu_dm_connector *aconnector = file_inode(f)->i_private;
struct display_stream_compressor *dsc;
struct dcn_dsc_state dsc_state = {0};
const uint32_t rd_buf_size = 100;
struct pipe_ctx *pipe_ctx;
ssize_t result = 0;
int i, r, str_len = 30;
rd_buf = kcalloc(rd_buf_size, sizeof(char), GFP_KERNEL);
if (!rd_buf)
return -ENOMEM;
rd_buf_ptr = rd_buf;
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &aconnector->dc_link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == aconnector->dc_link &&
pipe_ctx->stream->sink &&
pipe_ctx->stream->sink == aconnector->dc_sink)
break;
}
dsc = pipe_ctx->stream_res.dsc;
if (dsc)
dsc->funcs->dsc_read_state(dsc, &dsc_state);
snprintf(rd_buf_ptr, str_len,
"%d\n",
dsc_state.dsc_pic_width);
rd_buf_ptr += str_len;
while (size) {
if (*pos >= rd_buf_size)
break;
r = put_user(*(rd_buf + result), buf);
if (r) {
kfree(rd_buf);
return r; /* r = -EFAULT */
}
buf += 1;
size -= 1;
*pos += 1;
result += 1;
}
kfree(rd_buf);
return result;
}
static ssize_t dp_dsc_pic_height_read(struct file *f, char __user *buf,
size_t size, loff_t *pos)
{
char *rd_buf = NULL;
char *rd_buf_ptr = NULL;
struct amdgpu_dm_connector *aconnector = file_inode(f)->i_private;
struct display_stream_compressor *dsc;
struct dcn_dsc_state dsc_state = {0};
const uint32_t rd_buf_size = 100;
struct pipe_ctx *pipe_ctx;
ssize_t result = 0;
int i, r, str_len = 30;
rd_buf = kcalloc(rd_buf_size, sizeof(char), GFP_KERNEL);
if (!rd_buf)
return -ENOMEM;
rd_buf_ptr = rd_buf;
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &aconnector->dc_link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == aconnector->dc_link &&
pipe_ctx->stream->sink &&
pipe_ctx->stream->sink == aconnector->dc_sink)
break;
}
dsc = pipe_ctx->stream_res.dsc;
if (dsc)
dsc->funcs->dsc_read_state(dsc, &dsc_state);
snprintf(rd_buf_ptr, str_len,
"%d\n",
dsc_state.dsc_pic_height);
rd_buf_ptr += str_len;
while (size) {
if (*pos >= rd_buf_size)
break;
r = put_user(*(rd_buf + result), buf);
if (r) {
kfree(rd_buf);
return r; /* r = -EFAULT */
}
buf += 1;
size -= 1;
*pos += 1;
result += 1;
}
kfree(rd_buf);
return result;
}
/* function: read DSC chunk size parameter on the connector
*
* The read function: dp_dsc_chunk_size_read
* returns dsc chunk size set in the current configuration
* The value is calculated automatically by DSC code
* and depends on slice parameters and bpp target rate
* The return is an integer: 0 or other positive integer
* If 0 then DSC is disabled.
*
* Access it with the following command:
*
* cat /sys/kernel/debug/dri/0/DP-X/dsc_chunk_size
*
* 0 - means that DSC is disabled
*/
static ssize_t dp_dsc_chunk_size_read(struct file *f, char __user *buf,
size_t size, loff_t *pos)
{
char *rd_buf = NULL;
char *rd_buf_ptr = NULL;
struct amdgpu_dm_connector *aconnector = file_inode(f)->i_private;
struct display_stream_compressor *dsc;
struct dcn_dsc_state dsc_state = {0};
const uint32_t rd_buf_size = 100;
struct pipe_ctx *pipe_ctx;
ssize_t result = 0;
int i, r, str_len = 30;
rd_buf = kcalloc(rd_buf_size, sizeof(char), GFP_KERNEL);
if (!rd_buf)
return -ENOMEM;
rd_buf_ptr = rd_buf;
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &aconnector->dc_link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == aconnector->dc_link &&
pipe_ctx->stream->sink &&
pipe_ctx->stream->sink == aconnector->dc_sink)
break;
}
dsc = pipe_ctx->stream_res.dsc;
if (dsc)
dsc->funcs->dsc_read_state(dsc, &dsc_state);
snprintf(rd_buf_ptr, str_len,
"%d\n",
dsc_state.dsc_chunk_size);
rd_buf_ptr += str_len;
while (size) {
if (*pos >= rd_buf_size)
break;
r = put_user(*(rd_buf + result), buf);
if (r) {
kfree(rd_buf);
return r; /* r = -EFAULT */
}
buf += 1;
size -= 1;
*pos += 1;
result += 1;
}
kfree(rd_buf);
return result;
}
/* function: read DSC slice bpg offset on the connector
*
* The read function: dp_dsc_slice_bpg_offset_read
* returns dsc bpg slice offset set in the current configuration
* The value is calculated automatically by DSC code
* and depends on slice parameters and bpp target rate
* The return is an integer: 0 or other positive integer
* If 0 then DSC is disabled.
*
* Access it with the following command:
*
* cat /sys/kernel/debug/dri/0/DP-X/dsc_slice_bpg_offset
*
* 0 - means that DSC is disabled
*/
static ssize_t dp_dsc_slice_bpg_offset_read(struct file *f, char __user *buf,
size_t size, loff_t *pos)
{
char *rd_buf = NULL;
char *rd_buf_ptr = NULL;
struct amdgpu_dm_connector *aconnector = file_inode(f)->i_private;
struct display_stream_compressor *dsc;
struct dcn_dsc_state dsc_state = {0};
const uint32_t rd_buf_size = 100;
struct pipe_ctx *pipe_ctx;
ssize_t result = 0;
int i, r, str_len = 30;
rd_buf = kcalloc(rd_buf_size, sizeof(char), GFP_KERNEL);
if (!rd_buf)
return -ENOMEM;
rd_buf_ptr = rd_buf;
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &aconnector->dc_link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == aconnector->dc_link &&
pipe_ctx->stream->sink &&
pipe_ctx->stream->sink == aconnector->dc_sink)
break;
}
dsc = pipe_ctx->stream_res.dsc;
if (dsc)
dsc->funcs->dsc_read_state(dsc, &dsc_state);
snprintf(rd_buf_ptr, str_len,
"%d\n",
dsc_state.dsc_slice_bpg_offset);
rd_buf_ptr += str_len;
while (size) {
if (*pos >= rd_buf_size)
break;
r = put_user(*(rd_buf + result), buf);
if (r) {
kfree(rd_buf);
return r; /* r = -EFAULT */
}
buf += 1;
size -= 1;
*pos += 1;
result += 1;
}
kfree(rd_buf);
return result;
}
/*
* function description: Read max_requested_bpc property from the connector
*
* Access it with the following command:
*
* cat /sys/kernel/debug/dri/0/DP-X/max_bpc
*
*/
static ssize_t dp_max_bpc_read(struct file *f, char __user *buf,
size_t size, loff_t *pos)
{
struct amdgpu_dm_connector *aconnector = file_inode(f)->i_private;
struct drm_connector *connector = &aconnector->base;
struct drm_device *dev = connector->dev;
struct dm_connector_state *state;
ssize_t result = 0;
char *rd_buf = NULL;
char *rd_buf_ptr = NULL;
const uint32_t rd_buf_size = 10;
int r;
rd_buf = kcalloc(rd_buf_size, sizeof(char), GFP_KERNEL);
if (!rd_buf)
return -ENOMEM;
mutex_lock(&dev->mode_config.mutex);
drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
if (connector->state == NULL)
goto unlock;
state = to_dm_connector_state(connector->state);
rd_buf_ptr = rd_buf;
snprintf(rd_buf_ptr, rd_buf_size,
"%u\n",
state->base.max_requested_bpc);
while (size) {
if (*pos >= rd_buf_size)
break;
r = put_user(*(rd_buf + result), buf);
if (r) {
result = r; /* r = -EFAULT */
goto unlock;
}
buf += 1;
size -= 1;
*pos += 1;
result += 1;
}
unlock:
drm_modeset_unlock(&dev->mode_config.connection_mutex);
mutex_unlock(&dev->mode_config.mutex);
kfree(rd_buf);
return result;
}
/*
* function description: Set max_requested_bpc property on the connector
*
* This function will not force the input BPC on connector, it will only
* change the max value. This is equivalent to setting max_bpc through
* xrandr.
*
* The BPC value written must be >= 6 and <= 16. Values outside of this
* range will result in errors.
*
* BPC values:
* 0x6 - 6 BPC
* 0x8 - 8 BPC
* 0xa - 10 BPC
* 0xc - 12 BPC
* 0x10 - 16 BPC
*
* Write the max_bpc in the following way:
*
* echo 0x6 > /sys/kernel/debug/dri/0/DP-X/max_bpc
*
*/
static ssize_t dp_max_bpc_write(struct file *f, const char __user *buf,
size_t size, loff_t *pos)
{
struct amdgpu_dm_connector *aconnector = file_inode(f)->i_private;
struct drm_connector *connector = &aconnector->base;
struct dm_connector_state *state;
struct drm_device *dev = connector->dev;
char *wr_buf = NULL;
uint32_t wr_buf_size = 42;
int max_param_num = 1;
long param[1] = {0};
uint8_t param_nums = 0;
if (size == 0)
return -EINVAL;
wr_buf = kcalloc(wr_buf_size, sizeof(char), GFP_KERNEL);
if (!wr_buf) {
DRM_DEBUG_DRIVER("no memory to allocate write buffer\n");
return -ENOSPC;
}
if (parse_write_buffer_into_params(wr_buf, wr_buf_size,
(long *)param, buf,
max_param_num,
¶m_nums)) {
kfree(wr_buf);
return -EINVAL;
}
if (param_nums <= 0) {
DRM_DEBUG_DRIVER("user data not be read\n");
kfree(wr_buf);
return -EINVAL;
}
if (param[0] < 6 || param[0] > 16) {
DRM_DEBUG_DRIVER("bad max_bpc value\n");
kfree(wr_buf);
return -EINVAL;
}
mutex_lock(&dev->mode_config.mutex);
drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
if (connector->state == NULL)
goto unlock;
state = to_dm_connector_state(connector->state);
state->base.max_requested_bpc = param[0];
unlock:
drm_modeset_unlock(&dev->mode_config.connection_mutex);
mutex_unlock(&dev->mode_config.mutex);
kfree(wr_buf);
return size;
}
/*
* IPS status. Read only.
*
* Example usage: cat /sys/kernel/debug/dri/0/amdgpu_dm_ips_status
*/
static int ips_status_show(struct seq_file *m, void *unused)
{
struct amdgpu_device *adev = m->private;
struct dc *dc = adev->dm.dc;
struct dc_dmub_srv *dc_dmub_srv;
seq_printf(m, "IPS config: %d\n", dc->config.disable_ips);
seq_printf(m, "Idle optimization: %d\n", dc->idle_optimizations_allowed);
if (adev->dm.idle_workqueue) {
seq_printf(m, "Idle workqueue - enabled: %d\n", adev->dm.idle_workqueue->enable);
seq_printf(m, "Idle workqueue - running: %d\n", adev->dm.idle_workqueue->running);
}
dc_dmub_srv = dc->ctx->dmub_srv;
if (dc_dmub_srv && dc_dmub_srv->dmub) {
uint32_t rcg_count, ips1_count, ips2_count;
volatile const struct dmub_shared_state_ips_fw *ips_fw =
&dc_dmub_srv->dmub->shared_state[DMUB_SHARED_SHARE_FEATURE__IPS_FW].data.ips_fw;
rcg_count = ips_fw->rcg_entry_count;
ips1_count = ips_fw->ips1_entry_count;
ips2_count = ips_fw->ips2_entry_count;
seq_printf(m, "entry counts: rcg=%u ips1=%u ips2=%u\n",
rcg_count,
ips1_count,
ips2_count);
rcg_count = ips_fw->rcg_exit_count;
ips1_count = ips_fw->ips1_exit_count;
ips2_count = ips_fw->ips2_exit_count;
seq_printf(m, "exit counts: rcg=%u ips1=%u ips2=%u",
rcg_count,
ips1_count,
ips2_count);
seq_puts(m, "\n");
}
return 0;
}
/*
* Backlight at this moment. Read only.
* As written to display, taking ABM and backlight lut into account.
* Ranges from 0x0 to 0x10000 (= 100% PWM)
*
* Example usage: cat /sys/kernel/debug/dri/0/eDP-1/current_backlight
*/
static int current_backlight_show(struct seq_file *m, void *unused)
{
struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(m->private);
struct dc_link *link = aconnector->dc_link;
unsigned int backlight;
backlight = dc_link_get_backlight_level(link);
seq_printf(m, "0x%x\n", backlight);
return 0;
}
/*
* Backlight value that is being approached. Read only.
* As written to display, taking ABM and backlight lut into account.
* Ranges from 0x0 to 0x10000 (= 100% PWM)
*
* Example usage: cat /sys/kernel/debug/dri/0/eDP-1/target_backlight
*/
static int target_backlight_show(struct seq_file *m, void *unused)
{
struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(m->private);
struct dc_link *link = aconnector->dc_link;
unsigned int backlight;
backlight = dc_link_get_target_backlight_pwm(link);
seq_printf(m, "0x%x\n", backlight);
return 0;
}
/*
* function description: Determine if the connector is mst connector
*
* This function helps to determine whether a connector is a mst connector.
* - "root" stands for the root connector of the topology
* - "branch" stands for branch device of the topology
* - "end" stands for leaf node connector of the topology
* - "no" stands for the connector is not a device of a mst topology
* Access it with the following command:
*
* cat /sys/kernel/debug/dri/0/DP-X/is_mst_connector
*
*/
static int dp_is_mst_connector_show(struct seq_file *m, void *unused)
{
struct drm_connector *connector = m->private;
struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
struct drm_dp_mst_topology_mgr *mgr = NULL;
struct drm_dp_mst_port *port = NULL;
char *role = NULL;
mutex_lock(&aconnector->hpd_lock);
if (aconnector->mst_mgr.mst_state) {
role = "root";
} else if (aconnector->mst_root &&
aconnector->mst_root->mst_mgr.mst_state) {
role = "end";
mgr = &aconnector->mst_root->mst_mgr;
port = aconnector->mst_output_port;
drm_modeset_lock(&mgr->base.lock, NULL);
if (port->pdt == DP_PEER_DEVICE_MST_BRANCHING &&
port->mcs)
role = "branch";
drm_modeset_unlock(&mgr->base.lock);
} else {
role = "no";
}
seq_printf(m, "%s\n", role);
mutex_unlock(&aconnector->hpd_lock);
return 0;
}
/*
* function description: Read out the mst progress status
*
* This function helps to determine the mst progress status of
* a mst connector.
*
* Access it with the following command:
*
* cat /sys/kernel/debug/dri/0/DP-X/mst_progress_status
*
*/
static int dp_mst_progress_status_show(struct seq_file *m, void *unused)
{
struct drm_connector *connector = m->private;
struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
struct amdgpu_device *adev = drm_to_adev(connector->dev);
int i;
mutex_lock(&aconnector->hpd_lock);
mutex_lock(&adev->dm.dc_lock);
if (aconnector->mst_status == MST_STATUS_DEFAULT) {
seq_puts(m, "disabled\n");
} else {
for (i = 0; i < sizeof(mst_progress_status)/sizeof(char *); i++)
seq_printf(m, "%s:%s\n",
mst_progress_status[i],
aconnector->mst_status & BIT(i) ? "done" : "not_done");
}
mutex_unlock(&adev->dm.dc_lock);
mutex_unlock(&aconnector->hpd_lock);
return 0;
}
/*
* Reports whether the connected display is a USB4 DPIA tunneled display
* Example usage: cat /sys/kernel/debug/dri/0/DP-8/is_dpia_link
*/
static int is_dpia_link_show(struct seq_file *m, void *data)
{
struct drm_connector *connector = m->private;
struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
struct dc_link *link = aconnector->dc_link;
if (connector->status != connector_status_connected)
return -ENODEV;
seq_printf(m, "%s\n", (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA) ? "yes" :
(link->ep_type == DISPLAY_ENDPOINT_PHY) ? "no" : "unknown");
return 0;
}
DEFINE_SHOW_ATTRIBUTE(dp_dsc_fec_support);
DEFINE_SHOW_ATTRIBUTE(dmub_fw_state);
DEFINE_SHOW_ATTRIBUTE(dmub_tracebuffer);
DEFINE_SHOW_ATTRIBUTE(dp_lttpr_status);
DEFINE_SHOW_ATTRIBUTE(hdcp_sink_capability);
DEFINE_SHOW_ATTRIBUTE(internal_display);
DEFINE_SHOW_ATTRIBUTE(odm_combine_segments);
DEFINE_SHOW_ATTRIBUTE(replay_capability);
DEFINE_SHOW_ATTRIBUTE(psr_capability);
DEFINE_SHOW_ATTRIBUTE(dp_is_mst_connector);
DEFINE_SHOW_ATTRIBUTE(dp_mst_progress_status);
DEFINE_SHOW_ATTRIBUTE(is_dpia_link);
static const struct file_operations dp_dsc_clock_en_debugfs_fops = {
.owner = THIS_MODULE,
.read = dp_dsc_clock_en_read,
.write = dp_dsc_clock_en_write,
.llseek = default_llseek
};
static const struct file_operations dp_dsc_slice_width_debugfs_fops = {
.owner = THIS_MODULE,
.read = dp_dsc_slice_width_read,
.write = dp_dsc_slice_width_write,
.llseek = default_llseek
};
static const struct file_operations dp_dsc_slice_height_debugfs_fops = {
.owner = THIS_MODULE,
.read = dp_dsc_slice_height_read,
.write = dp_dsc_slice_height_write,
.llseek = default_llseek
};
static const struct file_operations dp_dsc_bits_per_pixel_debugfs_fops = {
.owner = THIS_MODULE,
.read = dp_dsc_bits_per_pixel_read,
.write = dp_dsc_bits_per_pixel_write,
.llseek = default_llseek
};
static const struct file_operations dp_dsc_pic_width_debugfs_fops = {
.owner = THIS_MODULE,
.read = dp_dsc_pic_width_read,
.llseek = default_llseek
};
static const struct file_operations dp_dsc_pic_height_debugfs_fops = {
.owner = THIS_MODULE,
.read = dp_dsc_pic_height_read,
.llseek = default_llseek
};
static const struct file_operations dp_dsc_chunk_size_debugfs_fops = {
.owner = THIS_MODULE,
.read = dp_dsc_chunk_size_read,
.llseek = default_llseek
};
static const struct file_operations dp_dsc_slice_bpg_offset_debugfs_fops = {
.owner = THIS_MODULE,
.read = dp_dsc_slice_bpg_offset_read,
.llseek = default_llseek
};
static const struct file_operations trigger_hotplug_debugfs_fops = {
.owner = THIS_MODULE,
.write = trigger_hotplug,
.llseek = default_llseek
};
static const struct file_operations dp_link_settings_debugfs_fops = {
.owner = THIS_MODULE,
.read = dp_link_settings_read,
.write = dp_link_settings_write,
.llseek = default_llseek
};
static const struct file_operations dp_phy_settings_debugfs_fop = {
.owner = THIS_MODULE,
.read = dp_phy_settings_read,
.write = dp_phy_settings_write,
.llseek = default_llseek
};
static const struct file_operations dp_phy_test_pattern_fops = {
.owner = THIS_MODULE,
.write = dp_phy_test_pattern_debugfs_write,
.llseek = default_llseek
};
static const struct file_operations sdp_message_fops = {
.owner = THIS_MODULE,
.write = dp_sdp_message_debugfs_write,
.llseek = default_llseek
};
static const struct file_operations dp_max_bpc_debugfs_fops = {
.owner = THIS_MODULE,
.read = dp_max_bpc_read,
.write = dp_max_bpc_write,
.llseek = default_llseek
};
static const struct file_operations dp_dsc_disable_passthrough_debugfs_fops = {
.owner = THIS_MODULE,
.write = dp_dsc_passthrough_set,
.llseek = default_llseek
};
static const struct file_operations dp_mst_link_settings_debugfs_fops = {
.owner = THIS_MODULE,
.write = dp_mst_link_setting,
.llseek = default_llseek
};
static const struct {
char *name;
const struct file_operations *fops;
} dp_debugfs_entries[] = {
{"link_settings", &dp_link_settings_debugfs_fops},
{"phy_settings", &dp_phy_settings_debugfs_fop},
{"lttpr_status", &dp_lttpr_status_fops},
{"test_pattern", &dp_phy_test_pattern_fops},
{"hdcp_sink_capability", &hdcp_sink_capability_fops},
{"sdp_message", &sdp_message_fops},
{"dsc_clock_en", &dp_dsc_clock_en_debugfs_fops},
{"dsc_slice_width", &dp_dsc_slice_width_debugfs_fops},
{"dsc_slice_height", &dp_dsc_slice_height_debugfs_fops},
{"dsc_bits_per_pixel", &dp_dsc_bits_per_pixel_debugfs_fops},
{"dsc_pic_width", &dp_dsc_pic_width_debugfs_fops},
{"dsc_pic_height", &dp_dsc_pic_height_debugfs_fops},
{"dsc_chunk_size", &dp_dsc_chunk_size_debugfs_fops},
{"dsc_slice_bpg", &dp_dsc_slice_bpg_offset_debugfs_fops},
{"dp_dsc_fec_support", &dp_dsc_fec_support_fops},
{"max_bpc", &dp_max_bpc_debugfs_fops},
{"dsc_disable_passthrough", &dp_dsc_disable_passthrough_debugfs_fops},
{"is_mst_connector", &dp_is_mst_connector_fops},
{"mst_progress_status", &dp_mst_progress_status_fops},
{"is_dpia_link", &is_dpia_link_fops},
{"mst_link_settings", &dp_mst_link_settings_debugfs_fops}
};
static const struct {
char *name;
const struct file_operations *fops;
} hdmi_debugfs_entries[] = {
{"hdcp_sink_capability", &hdcp_sink_capability_fops}
};
/*
* Force YUV420 output if available from the given mode
*/
static int force_yuv420_output_set(void *data, u64 val)
{
struct amdgpu_dm_connector *connector = data;
connector->force_yuv420_output = (bool)val;
return 0;
}
/*
* Check if YUV420 is forced when available from the given mode
*/
static int force_yuv420_output_get(void *data, u64 *val)
{
struct amdgpu_dm_connector *connector = data;
*val = connector->force_yuv420_output;
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(force_yuv420_output_fops, force_yuv420_output_get,
force_yuv420_output_set, "%llu\n");
/*
* Read Replay state
*/
static int replay_get_state(void *data, u64 *val)
{
struct amdgpu_dm_connector *connector = data;
struct dc_link *link = connector->dc_link;
uint64_t state = REPLAY_STATE_INVALID;
dc_link_get_replay_state(link, &state);
*val = state;
return 0;
}
/*
* Read PSR state
*/
static int psr_get(void *data, u64 *val)
{
struct amdgpu_dm_connector *connector = data;
struct dc_link *link = connector->dc_link;
enum dc_psr_state state = PSR_STATE0;
dc_link_get_psr_state(link, &state);
*val = state;
return 0;
}
/*
* Read PSR state residency
*/
static int psr_read_residency(void *data, u64 *val)
{
struct amdgpu_dm_connector *connector = data;
struct dc_link *link = connector->dc_link;
u32 residency = 0;
link->dc->link_srv->edp_get_psr_residency(link, &residency, PSR_RESIDENCY_MODE_PHY);
*val = (u64)residency;
return 0;
}
/* read allow_edp_hotplug_detection */
static int allow_edp_hotplug_detection_get(void *data, u64 *val)
{
struct amdgpu_dm_connector *aconnector = data;
struct drm_connector *connector = &aconnector->base;
struct drm_device *dev = connector->dev;
struct amdgpu_device *adev = drm_to_adev(dev);
*val = adev->dm.dc->config.allow_edp_hotplug_detection;
return 0;
}
/* set allow_edp_hotplug_detection */
static int allow_edp_hotplug_detection_set(void *data, u64 val)
{
struct amdgpu_dm_connector *aconnector = data;
struct drm_connector *connector = &aconnector->base;
struct drm_device *dev = connector->dev;
struct amdgpu_device *adev = drm_to_adev(dev);
adev->dm.dc->config.allow_edp_hotplug_detection = (uint32_t) val;
return 0;
}
/* check if kernel disallow eDP enter psr state
* cat /sys/kernel/debug/dri/0/eDP-X/disallow_edp_enter_psr
* 0: allow edp enter psr; 1: disallow
*/
static int disallow_edp_enter_psr_get(void *data, u64 *val)
{
struct amdgpu_dm_connector *aconnector = data;
*val = (u64) aconnector->disallow_edp_enter_psr;
return 0;
}
/* set kernel disallow eDP enter psr state
* echo 0x0 /sys/kernel/debug/dri/0/eDP-X/disallow_edp_enter_psr
* 0: allow edp enter psr; 1: disallow
*
* usage: test app read crc from PSR eDP rx.
*
* during kernel boot up, kernel write dpcd 0x170 = 5.
* this notify eDP rx psr enable and let rx check crc.
* rx fw will start checking crc for rx internal logic.
* crc read count within dpcd 0x246 is not updated and
* value is 0. when eDP tx driver wants to read rx crc
* from dpcd 0x246, 0x270, read count 0 lead tx driver
* timeout.
*
* to avoid this, we add this debugfs to let test app to disbable
* rx crc checking for rx internal logic. then test app can read
* non-zero crc read count.
*
* expected app sequence is as below:
* 1. disable eDP PHY and notify eDP rx with dpcd 0x600 = 2.
* 2. echo 0x1 /sys/kernel/debug/dri/0/eDP-X/disallow_edp_enter_psr
* 3. enable eDP PHY and notify eDP rx with dpcd 0x600 = 1 but
* without dpcd 0x170 = 5.
* 4. read crc from rx dpcd 0x270, 0x246, etc.
* 5. echo 0x0 /sys/kernel/debug/dri/0/eDP-X/disallow_edp_enter_psr.
* this will let eDP back to normal with psr setup dpcd 0x170 = 5.
*/
static int disallow_edp_enter_psr_set(void *data, u64 val)
{
struct amdgpu_dm_connector *aconnector = data;
aconnector->disallow_edp_enter_psr = val ? true : false;
return 0;
}
static int dmub_trace_mask_set(void *data, u64 val)
{
struct amdgpu_device *adev = data;
struct dmub_srv *srv = adev->dm.dc->ctx->dmub_srv->dmub;
enum dmub_gpint_command cmd;
u64 mask = 0xffff;
u8 shift = 0;
u32 res;
int i;
if (!srv->fw_version)
return -EINVAL;
for (i = 0; i < 4; i++) {
res = (val & mask) >> shift;
switch (i) {
case 0:
cmd = DMUB_GPINT__SET_TRACE_BUFFER_MASK_WORD0;
break;
case 1:
cmd = DMUB_GPINT__SET_TRACE_BUFFER_MASK_WORD1;
break;
case 2:
cmd = DMUB_GPINT__SET_TRACE_BUFFER_MASK_WORD2;
break;
case 3:
cmd = DMUB_GPINT__SET_TRACE_BUFFER_MASK_WORD3;
break;
}
if (!dc_wake_and_execute_gpint(adev->dm.dc->ctx, cmd, res, NULL, DM_DMUB_WAIT_TYPE_WAIT))
return -EIO;
usleep_range(100, 1000);
mask <<= 16;
shift += 16;
}
return 0;
}
static int dmub_trace_mask_show(void *data, u64 *val)
{
enum dmub_gpint_command cmd = DMUB_GPINT__GET_TRACE_BUFFER_MASK_WORD0;
struct amdgpu_device *adev = data;
struct dmub_srv *srv = adev->dm.dc->ctx->dmub_srv->dmub;
u8 shift = 0;
u64 raw = 0;
u64 res = 0;
int i = 0;
if (!srv->fw_version)
return -EINVAL;
while (i < 4) {
uint32_t response;
if (!dc_wake_and_execute_gpint(adev->dm.dc->ctx, cmd, 0, &response, DM_DMUB_WAIT_TYPE_WAIT_WITH_REPLY))
return -EIO;
raw = response;
usleep_range(100, 1000);
cmd++;
res |= (raw << shift);
shift += 16;
i++;
}
*val = res;
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(dmub_trace_mask_fops, dmub_trace_mask_show,
dmub_trace_mask_set, "0x%llx\n");
/*
* Set dmcub trace event IRQ enable or disable.
* Usage to enable dmcub trace event IRQ: echo 1 > /sys/kernel/debug/dri/0/amdgpu_dm_dmcub_trace_event_en
* Usage to disable dmcub trace event IRQ: echo 0 > /sys/kernel/debug/dri/0/amdgpu_dm_dmcub_trace_event_en
*/
static int dmcub_trace_event_state_set(void *data, u64 val)
{
struct amdgpu_device *adev = data;
if (val == 1 || val == 0) {
dc_dmub_trace_event_control(adev->dm.dc, val);
adev->dm.dmcub_trace_event_en = (bool)val;
} else
return 0;
return 0;
}
/*
* The interface doesn't need get function, so it will return the
* value of zero
* Usage: cat /sys/kernel/debug/dri/0/amdgpu_dm_dmcub_trace_event_en
*/
static int dmcub_trace_event_state_get(void *data, u64 *val)
{
struct amdgpu_device *adev = data;
*val = adev->dm.dmcub_trace_event_en;
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(dmcub_trace_event_state_fops, dmcub_trace_event_state_get,
dmcub_trace_event_state_set, "%llu\n");
DEFINE_DEBUGFS_ATTRIBUTE(replay_state_fops, replay_get_state, NULL, "%llu\n");
DEFINE_DEBUGFS_ATTRIBUTE(psr_fops, psr_get, NULL, "%llu\n");
DEFINE_DEBUGFS_ATTRIBUTE(psr_residency_fops, psr_read_residency, NULL,
"%llu\n");
DEFINE_DEBUGFS_ATTRIBUTE(allow_edp_hotplug_detection_fops,
allow_edp_hotplug_detection_get,
allow_edp_hotplug_detection_set, "%llu\n");
DEFINE_DEBUGFS_ATTRIBUTE(disallow_edp_enter_psr_fops,
disallow_edp_enter_psr_get,
disallow_edp_enter_psr_set, "%llu\n");
DEFINE_SHOW_ATTRIBUTE(current_backlight);
DEFINE_SHOW_ATTRIBUTE(target_backlight);
DEFINE_SHOW_ATTRIBUTE(ips_status);
static const struct {
char *name;
const struct file_operations *fops;
} connector_debugfs_entries[] = {
{"force_yuv420_output", &force_yuv420_output_fops},
{"trigger_hotplug", &trigger_hotplug_debugfs_fops},
{"internal_display", &internal_display_fops},
{"odm_combine_segments", &odm_combine_segments_fops}
};
/*
* Returns supported customized link rates by this eDP panel.
* Example usage: cat /sys/kernel/debug/dri/0/eDP-x/ilr_setting
*/
static int edp_ilr_show(struct seq_file *m, void *unused)
{
struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(m->private);
struct dc_link *link = aconnector->dc_link;
uint8_t supported_link_rates[16];
uint32_t link_rate_in_khz;
uint32_t entry = 0;
uint8_t dpcd_rev;
memset(supported_link_rates, 0, sizeof(supported_link_rates));
dm_helpers_dp_read_dpcd(link->ctx, link, DP_SUPPORTED_LINK_RATES,
supported_link_rates, sizeof(supported_link_rates));
dpcd_rev = link->dpcd_caps.dpcd_rev.raw;
if (dpcd_rev >= DP_DPCD_REV_13 &&
(supported_link_rates[entry+1] != 0 || supported_link_rates[entry] != 0)) {
for (entry = 0; entry < 16; entry += 2) {
link_rate_in_khz = (supported_link_rates[entry+1] * 0x100 +
supported_link_rates[entry]) * 200;
seq_printf(m, "[%d] %d kHz\n", entry/2, link_rate_in_khz);
}
} else {
seq_puts(m, "ILR is not supported by this eDP panel.\n");
}
return 0;
}
/*
* Set supported customized link rate to eDP panel.
*
* echo <lane_count> <link_rate option> > ilr_setting
*
* for example, supported ILR : [0] 1620000 kHz [1] 2160000 kHz [2] 2430000 kHz ...
* echo 4 1 > /sys/kernel/debug/dri/0/eDP-x/ilr_setting
* to set 4 lanes and 2.16 GHz
*/
static ssize_t edp_ilr_write(struct file *f, const char __user *buf,
size_t size, loff_t *pos)
{
struct amdgpu_dm_connector *connector = file_inode(f)->i_private;
struct dc_link *link = connector->dc_link;
struct amdgpu_device *adev = drm_to_adev(connector->base.dev);
struct dc *dc = (struct dc *)link->dc;
struct dc_link_settings prefer_link_settings;
char *wr_buf = NULL;
const uint32_t wr_buf_size = 40;
/* 0: lane_count; 1: link_rate */
int max_param_num = 2;
uint8_t param_nums = 0;
long param[2];
bool valid_input = true;
if (size == 0)
return -EINVAL;
wr_buf = kcalloc(wr_buf_size, sizeof(char), GFP_KERNEL);
if (!wr_buf)
return -ENOMEM;
if (parse_write_buffer_into_params(wr_buf, wr_buf_size,
(long *)param, buf,
max_param_num,
¶m_nums)) {
kfree(wr_buf);
return -EINVAL;
}
if (param_nums <= 0) {
kfree(wr_buf);
return -EINVAL;
}
switch (param[0]) {
case LANE_COUNT_ONE:
case LANE_COUNT_TWO:
case LANE_COUNT_FOUR:
break;
default:
valid_input = false;
break;
}
if (param[1] >= link->dpcd_caps.edp_supported_link_rates_count)
valid_input = false;
if (!valid_input) {
kfree(wr_buf);
DRM_DEBUG_DRIVER("Invalid Input value. No HW will be programmed\n");
prefer_link_settings.use_link_rate_set = false;
mutex_lock(&adev->dm.dc_lock);
dc_link_set_preferred_training_settings(dc, NULL, NULL, link, false);
mutex_unlock(&adev->dm.dc_lock);
return size;
}
/* save user force lane_count, link_rate to preferred settings
* spread spectrum will not be changed
*/
prefer_link_settings.link_spread = link->cur_link_settings.link_spread;
prefer_link_settings.lane_count = param[0];
prefer_link_settings.use_link_rate_set = true;
prefer_link_settings.link_rate_set = param[1];
prefer_link_settings.link_rate = link->dpcd_caps.edp_supported_link_rates[param[1]];
mutex_lock(&adev->dm.dc_lock);
dc_link_set_preferred_training_settings(dc, &prefer_link_settings,
NULL, link, false);
mutex_unlock(&adev->dm.dc_lock);
kfree(wr_buf);
return size;
}
static int edp_ilr_open(struct inode *inode, struct file *file)
{
return single_open(file, edp_ilr_show, inode->i_private);
}
static const struct file_operations edp_ilr_debugfs_fops = {
.owner = THIS_MODULE,
.open = edp_ilr_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.write = edp_ilr_write
};
void connector_debugfs_init(struct amdgpu_dm_connector *connector)
{
int i;
struct dentry *dir = connector->base.debugfs_entry;
if (connector->base.connector_type == DRM_MODE_CONNECTOR_DisplayPort ||
connector->base.connector_type == DRM_MODE_CONNECTOR_eDP) {
for (i = 0; i < ARRAY_SIZE(dp_debugfs_entries); i++) {
debugfs_create_file(dp_debugfs_entries[i].name,
0644, dir, connector,
dp_debugfs_entries[i].fops);
}
}
if (connector->base.connector_type == DRM_MODE_CONNECTOR_eDP) {
debugfs_create_file("replay_capability", 0444, dir, connector,
&replay_capability_fops);
debugfs_create_file("replay_state", 0444, dir, connector, &replay_state_fops);
debugfs_create_file_unsafe("psr_capability", 0444, dir, connector, &psr_capability_fops);
debugfs_create_file_unsafe("psr_state", 0444, dir, connector, &psr_fops);
debugfs_create_file_unsafe("psr_residency", 0444, dir,
connector, &psr_residency_fops);
debugfs_create_file("amdgpu_current_backlight_pwm", 0444, dir, connector,
¤t_backlight_fops);
debugfs_create_file("amdgpu_target_backlight_pwm", 0444, dir, connector,
&target_backlight_fops);
debugfs_create_file("ilr_setting", 0644, dir, connector,
&edp_ilr_debugfs_fops);
debugfs_create_file("allow_edp_hotplug_detection", 0644, dir, connector,
&allow_edp_hotplug_detection_fops);
debugfs_create_file("disallow_edp_enter_psr", 0644, dir, connector,
&disallow_edp_enter_psr_fops);
}
for (i = 0; i < ARRAY_SIZE(connector_debugfs_entries); i++) {
debugfs_create_file(connector_debugfs_entries[i].name,
0644, dir, connector,
connector_debugfs_entries[i].fops);
}
if (connector->base.connector_type == DRM_MODE_CONNECTOR_HDMIA) {
for (i = 0; i < ARRAY_SIZE(hdmi_debugfs_entries); i++) {
debugfs_create_file(hdmi_debugfs_entries[i].name,
0644, dir, connector,
hdmi_debugfs_entries[i].fops);
}
}
}
#ifdef CONFIG_DRM_AMD_SECURE_DISPLAY
/*
* Set crc window coordinate x start
*/
static int crc_win_x_start_set(void *data, u64 val)
{
struct drm_crtc *crtc = data;
struct drm_device *drm_dev = crtc->dev;
struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
spin_lock_irq(&drm_dev->event_lock);
acrtc->dm_irq_params.window_param.x_start = (uint16_t) val;
acrtc->dm_irq_params.window_param.update_win = false;
spin_unlock_irq(&drm_dev->event_lock);
return 0;
}
/*
* Get crc window coordinate x start
*/
static int crc_win_x_start_get(void *data, u64 *val)
{
struct drm_crtc *crtc = data;
struct drm_device *drm_dev = crtc->dev;
struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
spin_lock_irq(&drm_dev->event_lock);
*val = acrtc->dm_irq_params.window_param.x_start;
spin_unlock_irq(&drm_dev->event_lock);
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(crc_win_x_start_fops, crc_win_x_start_get,
crc_win_x_start_set, "%llu\n");
/*
* Set crc window coordinate y start
*/
static int crc_win_y_start_set(void *data, u64 val)
{
struct drm_crtc *crtc = data;
struct drm_device *drm_dev = crtc->dev;
struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
spin_lock_irq(&drm_dev->event_lock);
acrtc->dm_irq_params.window_param.y_start = (uint16_t) val;
acrtc->dm_irq_params.window_param.update_win = false;
spin_unlock_irq(&drm_dev->event_lock);
return 0;
}
/*
* Get crc window coordinate y start
*/
static int crc_win_y_start_get(void *data, u64 *val)
{
struct drm_crtc *crtc = data;
struct drm_device *drm_dev = crtc->dev;
struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
spin_lock_irq(&drm_dev->event_lock);
*val = acrtc->dm_irq_params.window_param.y_start;
spin_unlock_irq(&drm_dev->event_lock);
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(crc_win_y_start_fops, crc_win_y_start_get,
crc_win_y_start_set, "%llu\n");
/*
* Set crc window coordinate x end
*/
static int crc_win_x_end_set(void *data, u64 val)
{
struct drm_crtc *crtc = data;
struct drm_device *drm_dev = crtc->dev;
struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
spin_lock_irq(&drm_dev->event_lock);
acrtc->dm_irq_params.window_param.x_end = (uint16_t) val;
acrtc->dm_irq_params.window_param.update_win = false;
spin_unlock_irq(&drm_dev->event_lock);
return 0;
}
/*
* Get crc window coordinate x end
*/
static int crc_win_x_end_get(void *data, u64 *val)
{
struct drm_crtc *crtc = data;
struct drm_device *drm_dev = crtc->dev;
struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
spin_lock_irq(&drm_dev->event_lock);
*val = acrtc->dm_irq_params.window_param.x_end;
spin_unlock_irq(&drm_dev->event_lock);
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(crc_win_x_end_fops, crc_win_x_end_get,
crc_win_x_end_set, "%llu\n");
/*
* Set crc window coordinate y end
*/
static int crc_win_y_end_set(void *data, u64 val)
{
struct drm_crtc *crtc = data;
struct drm_device *drm_dev = crtc->dev;
struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
spin_lock_irq(&drm_dev->event_lock);
acrtc->dm_irq_params.window_param.y_end = (uint16_t) val;
acrtc->dm_irq_params.window_param.update_win = false;
spin_unlock_irq(&drm_dev->event_lock);
return 0;
}
/*
* Get crc window coordinate y end
*/
static int crc_win_y_end_get(void *data, u64 *val)
{
struct drm_crtc *crtc = data;
struct drm_device *drm_dev = crtc->dev;
struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
spin_lock_irq(&drm_dev->event_lock);
*val = acrtc->dm_irq_params.window_param.y_end;
spin_unlock_irq(&drm_dev->event_lock);
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(crc_win_y_end_fops, crc_win_y_end_get,
crc_win_y_end_set, "%llu\n");
/*
* Trigger to commit crc window
*/
static int crc_win_update_set(void *data, u64 val)
{
struct drm_crtc *crtc = data;
struct amdgpu_crtc *acrtc;
struct amdgpu_device *adev = drm_to_adev(crtc->dev);
if (val) {
acrtc = to_amdgpu_crtc(crtc);
mutex_lock(&adev->dm.dc_lock);
/* PSR may write to OTG CRC window control register,
* so close it before starting secure_display.
*/
amdgpu_dm_psr_disable(acrtc->dm_irq_params.stream);
spin_lock_irq(&adev_to_drm(adev)->event_lock);
acrtc->dm_irq_params.window_param.activated = true;
acrtc->dm_irq_params.window_param.update_win = true;
acrtc->dm_irq_params.window_param.skip_frame_cnt = 0;
spin_unlock_irq(&adev_to_drm(adev)->event_lock);
mutex_unlock(&adev->dm.dc_lock);
}
return 0;
}
/*
* Get crc window update flag
*/
static int crc_win_update_get(void *data, u64 *val)
{
*val = 0;
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(crc_win_update_fops, crc_win_update_get,
crc_win_update_set, "%llu\n");
#endif
void crtc_debugfs_init(struct drm_crtc *crtc)
{
#ifdef CONFIG_DRM_AMD_SECURE_DISPLAY
struct dentry *dir = debugfs_lookup("crc", crtc->debugfs_entry);
if (!dir)
return;
debugfs_create_file_unsafe("crc_win_x_start", 0644, dir, crtc,
&crc_win_x_start_fops);
debugfs_create_file_unsafe("crc_win_y_start", 0644, dir, crtc,
&crc_win_y_start_fops);
debugfs_create_file_unsafe("crc_win_x_end", 0644, dir, crtc,
&crc_win_x_end_fops);
debugfs_create_file_unsafe("crc_win_y_end", 0644, dir, crtc,
&crc_win_y_end_fops);
debugfs_create_file_unsafe("crc_win_update", 0644, dir, crtc,
&crc_win_update_fops);
dput(dir);
#endif
debugfs_create_file("amdgpu_current_bpc", 0644, crtc->debugfs_entry,
crtc, &amdgpu_current_bpc_fops);
debugfs_create_file("amdgpu_current_colorspace", 0644, crtc->debugfs_entry,
crtc, &amdgpu_current_colorspace_fops);
}
/*
* Writes DTN log state to the user supplied buffer.
* Example usage: cat /sys/kernel/debug/dri/0/amdgpu_dm_dtn_log
*/
static ssize_t dtn_log_read(
struct file *f,
char __user *buf,
size_t size,
loff_t *pos)
{
struct amdgpu_device *adev = file_inode(f)->i_private;
struct dc *dc = adev->dm.dc;
struct dc_log_buffer_ctx log_ctx = { 0 };
ssize_t result = 0;
if (!buf || !size)
return -EINVAL;
if (!dc->hwss.log_hw_state)
return 0;
dc->hwss.log_hw_state(dc, &log_ctx);
if (*pos < log_ctx.pos) {
size_t to_copy = log_ctx.pos - *pos;
to_copy = min(to_copy, size);
if (!copy_to_user(buf, log_ctx.buf + *pos, to_copy)) {
*pos += to_copy;
result = to_copy;
}
}
kfree(log_ctx.buf);
return result;
}
/*
* Writes DTN log state to dmesg when triggered via a write.
* Example usage: echo 1 > /sys/kernel/debug/dri/0/amdgpu_dm_dtn_log
*/
static ssize_t dtn_log_write(
struct file *f,
const char __user *buf,
size_t size,
loff_t *pos)
{
struct amdgpu_device *adev = file_inode(f)->i_private;
struct dc *dc = adev->dm.dc;
/* Write triggers log output via dmesg. */
if (size == 0)
return 0;
if (dc->hwss.log_hw_state)
dc->hwss.log_hw_state(dc, NULL);
return size;
}
static int mst_topo_show(struct seq_file *m, void *unused)
{
struct amdgpu_device *adev = (struct amdgpu_device *)m->private;
struct drm_device *dev = adev_to_drm(adev);
struct drm_connector *connector;
struct drm_connector_list_iter conn_iter;
struct amdgpu_dm_connector *aconnector;
drm_connector_list_iter_begin(dev, &conn_iter);
drm_for_each_connector_iter(connector, &conn_iter) {
if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort)
continue;
aconnector = to_amdgpu_dm_connector(connector);
/* Ensure we're only dumping the topology of a root mst node */
if (!aconnector->mst_mgr.mst_state)
continue;
seq_printf(m, "\nMST topology for connector %d\n", aconnector->connector_id);
drm_dp_mst_dump_topology(m, &aconnector->mst_mgr);
}
drm_connector_list_iter_end(&conn_iter);
return 0;
}
/*
* Sets trigger hpd for MST topologies.
* All connected connectors will be rediscovered and re started as needed if val of 1 is sent.
* All topologies will be disconnected if val of 0 is set .
* Usage to enable topologies: echo 1 > /sys/kernel/debug/dri/0/amdgpu_dm_trigger_hpd_mst
* Usage to disable topologies: echo 0 > /sys/kernel/debug/dri/0/amdgpu_dm_trigger_hpd_mst
*/
static int trigger_hpd_mst_set(void *data, u64 val)
{
struct amdgpu_device *adev = data;
struct drm_device *dev = adev_to_drm(adev);
struct drm_connector_list_iter iter;
struct amdgpu_dm_connector *aconnector;
struct drm_connector *connector;
struct dc_link *link = NULL;
int ret;
if (val == 1) {
drm_connector_list_iter_begin(dev, &iter);
drm_for_each_connector_iter(connector, &iter) {
aconnector = to_amdgpu_dm_connector(connector);
if (aconnector->dc_link->type == dc_connection_mst_branch &&
aconnector->mst_mgr.aux) {
mutex_lock(&adev->dm.dc_lock);
ret = dc_link_detect(aconnector->dc_link, DETECT_REASON_HPD);
mutex_unlock(&adev->dm.dc_lock);
if (!ret)
DRM_ERROR("DM_MST: Failed to detect dc link!");
ret = drm_dp_mst_topology_mgr_set_mst(&aconnector->mst_mgr, true);
if (ret < 0)
DRM_ERROR("DM_MST: Failed to set the device into MST mode!");
}
}
} else if (val == 0) {
drm_connector_list_iter_begin(dev, &iter);
drm_for_each_connector_iter(connector, &iter) {
aconnector = to_amdgpu_dm_connector(connector);
if (!aconnector->dc_link)
continue;
if (!aconnector->mst_root)
continue;
link = aconnector->dc_link;
dc_link_dp_receiver_power_ctrl(link, false);
drm_dp_mst_topology_mgr_set_mst(&aconnector->mst_root->mst_mgr, false);
link->mst_stream_alloc_table.stream_count = 0;
memset(link->mst_stream_alloc_table.stream_allocations, 0,
sizeof(link->mst_stream_alloc_table.stream_allocations));
}
} else {
return 0;
}
drm_kms_helper_hotplug_event(dev);
return 0;
}
/*
* The interface doesn't need get function, so it will return the
* value of zero
* Usage: cat /sys/kernel/debug/dri/0/amdgpu_dm_trigger_hpd_mst
*/
static int trigger_hpd_mst_get(void *data, u64 *val)
{
*val = 0;
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(trigger_hpd_mst_ops, trigger_hpd_mst_get,
trigger_hpd_mst_set, "%llu\n");
/*
* Sets the force_timing_sync debug option from the given string.
* All connected displays will be force synchronized immediately.
* Usage: echo 1 > /sys/kernel/debug/dri/0/amdgpu_dm_force_timing_sync
*/
static int force_timing_sync_set(void *data, u64 val)
{
struct amdgpu_device *adev = data;
adev->dm.force_timing_sync = (bool)val;
amdgpu_dm_trigger_timing_sync(adev_to_drm(adev));
return 0;
}
/*
* Gets the force_timing_sync debug option value into the given buffer.
* Usage: cat /sys/kernel/debug/dri/0/amdgpu_dm_force_timing_sync
*/
static int force_timing_sync_get(void *data, u64 *val)
{
struct amdgpu_device *adev = data;
*val = adev->dm.force_timing_sync;
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(force_timing_sync_ops, force_timing_sync_get,
force_timing_sync_set, "%llu\n");
/*
* Disables all HPD and HPD RX interrupt handling in the
* driver when set to 1. Default is 0.
*/
static int disable_hpd_set(void *data, u64 val)
{
struct amdgpu_device *adev = data;
adev->dm.disable_hpd_irq = (bool)val;
return 0;
}
/*
* Returns 1 if HPD and HPRX interrupt handling is disabled,
* 0 otherwise.
*/
static int disable_hpd_get(void *data, u64 *val)
{
struct amdgpu_device *adev = data;
*val = adev->dm.disable_hpd_irq;
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(disable_hpd_ops, disable_hpd_get,
disable_hpd_set, "%llu\n");
/*
* Prints hardware capabilities. These are used for IGT testing.
*/
static int capabilities_show(struct seq_file *m, void *unused)
{
struct amdgpu_device *adev = (struct amdgpu_device *)m->private;
struct dc *dc = adev->dm.dc;
bool mall_supported = dc->caps.mall_size_total;
bool subvp_supported = dc->caps.subvp_fw_processing_delay_us;
unsigned int mall_in_use = false;
unsigned int subvp_in_use = false;
struct hubbub *hubbub = dc->res_pool->hubbub;
if (hubbub->funcs->get_mall_en)
hubbub->funcs->get_mall_en(hubbub, &mall_in_use);
if (dc->cap_funcs.get_subvp_en)
subvp_in_use = dc->cap_funcs.get_subvp_en(dc, dc->current_state);
seq_printf(m, "mall supported: %s, enabled: %s\n",
mall_supported ? "yes" : "no", mall_in_use ? "yes" : "no");
seq_printf(m, "sub-viewport supported: %s, enabled: %s\n",
subvp_supported ? "yes" : "no", subvp_in_use ? "yes" : "no");
return 0;
}
DEFINE_SHOW_ATTRIBUTE(capabilities);
/*
* Temporary w/a to force sst sequence in M42D DP2 mst receiver
* Example usage: echo 1 > /sys/kernel/debug/dri/0/amdgpu_dm_dp_set_mst_en_for_sst
*/
static int dp_force_sst_set(void *data, u64 val)
{
struct amdgpu_device *adev = data;
adev->dm.dc->debug.set_mst_en_for_sst = val;
return 0;
}
static int dp_force_sst_get(void *data, u64 *val)
{
struct amdgpu_device *adev = data;
*val = adev->dm.dc->debug.set_mst_en_for_sst;
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(dp_set_mst_en_for_sst_ops, dp_force_sst_get,
dp_force_sst_set, "%llu\n");
/*
* Force DP2 sequence without VESA certified cable.
* Example usage: echo 1 > /sys/kernel/debug/dri/0/amdgpu_dm_dp_ignore_cable_id
*/
static int dp_ignore_cable_id_set(void *data, u64 val)
{
struct amdgpu_device *adev = data;
adev->dm.dc->debug.ignore_cable_id = val;
return 0;
}
static int dp_ignore_cable_id_get(void *data, u64 *val)
{
struct amdgpu_device *adev = data;
*val = adev->dm.dc->debug.ignore_cable_id;
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(dp_ignore_cable_id_ops, dp_ignore_cable_id_get,
dp_ignore_cable_id_set, "%llu\n");
/*
* Sets the DC visual confirm debug option from the given string.
* Example usage: echo 1 > /sys/kernel/debug/dri/0/amdgpu_visual_confirm
*/
static int visual_confirm_set(void *data, u64 val)
{
struct amdgpu_device *adev = data;
adev->dm.dc->debug.visual_confirm = (enum visual_confirm)val;
return 0;
}
/*
* Reads the DC visual confirm debug option value into the given buffer.
* Example usage: cat /sys/kernel/debug/dri/0/amdgpu_dm_visual_confirm
*/
static int visual_confirm_get(void *data, u64 *val)
{
struct amdgpu_device *adev = data;
*val = adev->dm.dc->debug.visual_confirm;
return 0;
}
DEFINE_SHOW_ATTRIBUTE(mst_topo);
DEFINE_DEBUGFS_ATTRIBUTE(visual_confirm_fops, visual_confirm_get,
visual_confirm_set, "%llu\n");
/*
* Sets the DC skip_detection_link_training debug option from the given string.
* Example usage: echo 1 > /sys/kernel/debug/dri/0/amdgpu_skip_detection_link_training
*/
static int skip_detection_link_training_set(void *data, u64 val)
{
struct amdgpu_device *adev = data;
if (val == 0)
adev->dm.dc->debug.skip_detection_link_training = false;
else
adev->dm.dc->debug.skip_detection_link_training = true;
return 0;
}
/*
* Reads the DC skip_detection_link_training debug option value into the given buffer.
* Example usage: cat /sys/kernel/debug/dri/0/amdgpu_dm_skip_detection_link_training
*/
static int skip_detection_link_training_get(void *data, u64 *val)
{
struct amdgpu_device *adev = data;
*val = adev->dm.dc->debug.skip_detection_link_training;
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(skip_detection_link_training_fops,
skip_detection_link_training_get,
skip_detection_link_training_set, "%llu\n");
/*
* Dumps the DCC_EN bit for each pipe.
* Example usage: cat /sys/kernel/debug/dri/0/amdgpu_dm_dcc_en
*/
static ssize_t dcc_en_bits_read(
struct file *f,
char __user *buf,
size_t size,
loff_t *pos)
{
struct amdgpu_device *adev = file_inode(f)->i_private;
struct dc *dc = adev->dm.dc;
char *rd_buf = NULL;
const uint32_t rd_buf_size = 32;
uint32_t result = 0;
int offset = 0;
int num_pipes = dc->res_pool->pipe_count;
int *dcc_en_bits;
int i, r;
dcc_en_bits = kcalloc(num_pipes, sizeof(int), GFP_KERNEL);
if (!dcc_en_bits)
return -ENOMEM;
if (!dc->hwss.get_dcc_en_bits) {
kfree(dcc_en_bits);
return 0;
}
dc->hwss.get_dcc_en_bits(dc, dcc_en_bits);
rd_buf = kcalloc(rd_buf_size, sizeof(char), GFP_KERNEL);
if (!rd_buf) {
kfree(dcc_en_bits);
return -ENOMEM;
}
for (i = 0; i < num_pipes; i++)
offset += snprintf(rd_buf + offset, rd_buf_size - offset,
"%d ", dcc_en_bits[i]);
rd_buf[strlen(rd_buf)] = '\n';
kfree(dcc_en_bits);
while (size) {
if (*pos >= rd_buf_size)
break;
r = put_user(*(rd_buf + result), buf);
if (r) {
kfree(rd_buf);
return r; /* r = -EFAULT */
}
buf += 1;
size -= 1;
*pos += 1;
result += 1;
}
kfree(rd_buf);
return result;
}
void dtn_debugfs_init(struct amdgpu_device *adev)
{
static const struct file_operations dtn_log_fops = {
.owner = THIS_MODULE,
.read = dtn_log_read,
.write = dtn_log_write,
.llseek = default_llseek
};
static const struct file_operations dcc_en_bits_fops = {
.owner = THIS_MODULE,
.read = dcc_en_bits_read,
.llseek = default_llseek
};
struct drm_minor *minor = adev_to_drm(adev)->primary;
struct dentry *root = minor->debugfs_root;
debugfs_create_file("amdgpu_mst_topology", 0444, root,
adev, &mst_topo_fops);
debugfs_create_file("amdgpu_dm_capabilities", 0444, root,
adev, &capabilities_fops);
debugfs_create_file("amdgpu_dm_dtn_log", 0644, root, adev,
&dtn_log_fops);
debugfs_create_file("amdgpu_dm_dp_set_mst_en_for_sst", 0644, root, adev,
&dp_set_mst_en_for_sst_ops);
debugfs_create_file("amdgpu_dm_dp_ignore_cable_id", 0644, root, adev,
&dp_ignore_cable_id_ops);
debugfs_create_file_unsafe("amdgpu_dm_visual_confirm", 0644, root, adev,
&visual_confirm_fops);
debugfs_create_file_unsafe("amdgpu_dm_skip_detection_link_training", 0644, root, adev,
&skip_detection_link_training_fops);
debugfs_create_file_unsafe("amdgpu_dm_dmub_tracebuffer", 0644, root,
adev, &dmub_tracebuffer_fops);
debugfs_create_file_unsafe("amdgpu_dm_dmub_fw_state", 0644, root,
adev, &dmub_fw_state_fops);
debugfs_create_file_unsafe("amdgpu_dm_force_timing_sync", 0644, root,
adev, &force_timing_sync_ops);
debugfs_create_file_unsafe("amdgpu_dm_dmub_trace_mask", 0644, root,
adev, &dmub_trace_mask_fops);
debugfs_create_file_unsafe("amdgpu_dm_dmcub_trace_event_en", 0644, root,
adev, &dmcub_trace_event_state_fops);
debugfs_create_file_unsafe("amdgpu_dm_trigger_hpd_mst", 0644, root,
adev, &trigger_hpd_mst_ops);
debugfs_create_file_unsafe("amdgpu_dm_dcc_en", 0644, root, adev,
&dcc_en_bits_fops);
debugfs_create_file_unsafe("amdgpu_dm_disable_hpd", 0644, root, adev,
&disable_hpd_ops);
if (adev->dm.dc->caps.ips_support)
debugfs_create_file_unsafe("amdgpu_dm_ips_status", 0644, root, adev,
&ips_status_fops);
}
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