diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 352 |
1 files changed, 244 insertions, 108 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c index 827fcb4fb3b3..d63ee636483b 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c @@ -336,6 +336,153 @@ static ssize_t dp_link_settings_write(struct file *f, const char __user *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) * @@ -907,6 +1054,61 @@ unlock: 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_printf(m, "sRGB"); + break; + case COLOR_SPACE_YCBCR601: + case COLOR_SPACE_YCBCR601_LIMITED: + seq_printf(m, "BT601_YCC"); + break; + case COLOR_SPACE_YCBCR709: + case COLOR_SPACE_YCBCR709_LIMITED: + seq_printf(m, "BT709_YCC"); + break; + case COLOR_SPACE_ADOBERGB: + seq_printf(m, "opRGB"); + break; + case COLOR_SPACE_2020_RGB_FULLRANGE: + seq_printf(m, "BT2020_RGB"); + break; + case COLOR_SPACE_2020_YCBCR: + seq_printf(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 @@ -1039,88 +1241,6 @@ static ssize_t dp_sdp_message_debugfs_write(struct file *f, const char __user *b return write_size; } -static ssize_t dp_dpcd_address_write(struct file *f, const char __user *buf, - size_t size, loff_t *pos) -{ - int r; - struct amdgpu_dm_connector *connector = file_inode(f)->i_private; - - if (size < sizeof(connector->debugfs_dpcd_address)) - return -EINVAL; - - r = copy_from_user(&connector->debugfs_dpcd_address, - buf, sizeof(connector->debugfs_dpcd_address)); - - return size - r; -} - -static ssize_t dp_dpcd_size_write(struct file *f, const char __user *buf, - size_t size, loff_t *pos) -{ - int r; - struct amdgpu_dm_connector *connector = file_inode(f)->i_private; - - if (size < sizeof(connector->debugfs_dpcd_size)) - return -EINVAL; - - r = copy_from_user(&connector->debugfs_dpcd_size, - buf, sizeof(connector->debugfs_dpcd_size)); - - if (connector->debugfs_dpcd_size > 256) - connector->debugfs_dpcd_size = 0; - - return size - r; -} - -static ssize_t dp_dpcd_data_write(struct file *f, const char __user *buf, - size_t size, loff_t *pos) -{ - int r; - char *data; - struct amdgpu_dm_connector *connector = file_inode(f)->i_private; - struct dc_link *link = connector->dc_link; - uint32_t write_size = connector->debugfs_dpcd_size; - - if (!write_size || size < write_size) - return -EINVAL; - - data = kzalloc(write_size, GFP_KERNEL); - if (!data) - return 0; - - r = copy_from_user(data, buf, write_size); - - dm_helpers_dp_write_dpcd(link->ctx, link, - connector->debugfs_dpcd_address, data, write_size - r); - kfree(data); - return write_size - r; -} - -static ssize_t dp_dpcd_data_read(struct file *f, char __user *buf, - size_t size, loff_t *pos) -{ - int r; - char *data; - struct amdgpu_dm_connector *connector = file_inode(f)->i_private; - struct dc_link *link = connector->dc_link; - uint32_t read_size = connector->debugfs_dpcd_size; - - if (!read_size || size < read_size) - return 0; - - data = kzalloc(read_size, GFP_KERNEL); - if (!data) - return 0; - - dm_helpers_dp_read_dpcd(link->ctx, link, - connector->debugfs_dpcd_address, data, read_size); - - r = copy_to_user(buf, data, read_size); - - kfree(data); - return read_size - r; -} - /* function: Read link's DSC & FEC capabilities * * @@ -2682,25 +2802,6 @@ static const struct file_operations sdp_message_fops = { .llseek = default_llseek }; -static const struct file_operations dp_dpcd_address_debugfs_fops = { - .owner = THIS_MODULE, - .write = dp_dpcd_address_write, - .llseek = default_llseek -}; - -static const struct file_operations dp_dpcd_size_debugfs_fops = { - .owner = THIS_MODULE, - .write = dp_dpcd_size_write, - .llseek = default_llseek -}; - -static const struct file_operations dp_dpcd_data_debugfs_fops = { - .owner = THIS_MODULE, - .read = dp_dpcd_data_read, - .write = dp_dpcd_data_write, - .llseek = default_llseek -}; - static const struct file_operations dp_max_bpc_debugfs_fops = { .owner = THIS_MODULE, .read = dp_max_bpc_read, @@ -2714,6 +2815,12 @@ static const struct file_operations dp_dsc_disable_passthrough_debugfs_fops = { .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; @@ -2724,9 +2831,6 @@ static const struct { {"test_pattern", &dp_phy_test_pattern_fops}, {"hdcp_sink_capability", &hdcp_sink_capability_fops}, {"sdp_message", &sdp_message_fops}, - {"aux_dpcd_address", &dp_dpcd_address_debugfs_fops}, - {"aux_dpcd_size", &dp_dpcd_size_debugfs_fops}, - {"aux_dpcd_data", &dp_dpcd_data_debugfs_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}, @@ -2740,7 +2844,8 @@ static const struct { {"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} + {"is_dpia_link", &is_dpia_link_fops}, + {"mst_link_settings", &dp_mst_link_settings_debugfs_fops} }; static const struct { @@ -2809,6 +2914,32 @@ static int psr_read_residency(void *data, u64 *val) 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; +} + /* * 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 @@ -2847,6 +2978,10 @@ 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_SHOW_ATTRIBUTE(current_backlight); DEFINE_SHOW_ATTRIBUTE(target_backlight); @@ -3017,6 +3152,8 @@ void connector_debugfs_init(struct amdgpu_dm_connector *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); } for (i = 0; i < ARRAY_SIZE(connector_debugfs_entries); i++) { @@ -3025,9 +3162,6 @@ void connector_debugfs_init(struct amdgpu_dm_connector *connector) connector_debugfs_entries[i].fops); } - connector->debugfs_dpcd_address = 0; - connector->debugfs_dpcd_size = 0; - 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, @@ -3246,6 +3380,8 @@ void crtc_debugfs_init(struct drm_crtc *crtc) #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); } /* |