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 | 81 |
1 files changed, 65 insertions, 16 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 94fcb086154c..004cd8d38214 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 @@ -111,7 +111,6 @@ static int parse_write_buffer_into_params(char *wr_buf, uint32_t wr_buf_size, 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 */ @@ -265,7 +264,7 @@ static ssize_t dp_link_settings_write(struct file *f, const char __user *buf, if (!wr_buf) return -ENOSPC; - if (parse_write_buffer_into_params(wr_buf, wr_buf_size, + if (parse_write_buffer_into_params(wr_buf, size, (long *)param, buf, max_param_num, ¶m_nums)) { @@ -424,7 +423,7 @@ static ssize_t dp_phy_settings_write(struct file *f, const char __user *buf, if (!wr_buf) return -ENOSPC; - if (parse_write_buffer_into_params(wr_buf, wr_buf_size, + if (parse_write_buffer_into_params(wr_buf, size, (long *)param, buf, max_param_num, ¶m_nums)) { @@ -576,7 +575,7 @@ static ssize_t dp_phy_test_pattern_debugfs_write(struct file *f, const char __us if (!wr_buf) return -ENOSPC; - if (parse_write_buffer_into_params(wr_buf, wr_buf_size, + if (parse_write_buffer_into_params(wr_buf, size, (long *)param, buf, max_param_num, ¶m_nums)) { @@ -1059,12 +1058,17 @@ static int dp_dsc_fec_support_show(struct seq_file *m, void *data) * * 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 dp_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; enum dc_connection_type new_connection_type = dc_connection_none; char *wr_buf = NULL; @@ -1086,11 +1090,13 @@ static ssize_t dp_trigger_hotplug(struct file *f, const char __user *buf, return -ENOSPC; } - if (parse_write_buffer_into_params(wr_buf, wr_buf_size, + if (parse_write_buffer_into_params(wr_buf, size, (long *)param, buf, max_param_num, - ¶m_nums)) + ¶m_nums)) { + kfree(wr_buf); return -EINVAL; + } if (param_nums <= 0) { DRM_DEBUG_DRIVER("user data not be read\n"); @@ -1115,11 +1121,33 @@ static ssize_t dp_trigger_hotplug(struct file *f, const char __user *buf, drm_modeset_unlock_all(dev); drm_kms_helper_hotplug_event(dev); + } else if (param[0] == 0) { + if (!aconnector->dc_link) + goto unlock; -unlock: - mutex_unlock(&aconnector->hpd_lock); + 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); + + drm_modeset_lock_all(dev); + dm_restore_drm_connector_state(dev, connector); + drm_modeset_unlock_all(dev); + + drm_kms_helper_hotplug_event(dev); } +unlock: + mutex_unlock(&aconnector->hpd_lock); + kfree(wr_buf); return size; } @@ -1200,9 +1228,14 @@ static ssize_t dp_dsc_clock_en_read(struct file *f, char __user *buf, * * The write function: dp_dsc_clock_en_write * enables to force DSC on the connector. - * User can write to either force enable DSC + * 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): @@ -1238,7 +1271,7 @@ static ssize_t dp_dsc_clock_en_write(struct file *f, const char __user *buf, return -ENOSPC; } - if (parse_write_buffer_into_params(wr_buf, wr_buf_size, + if (parse_write_buffer_into_params(wr_buf, size, (long *)param, buf, max_param_num, ¶m_nums)) { @@ -1262,7 +1295,12 @@ static ssize_t dp_dsc_clock_en_write(struct file *f, const char __user *buf, if (!pipe_ctx || !pipe_ctx->stream) goto done; - aconnector->dsc_settings.dsc_clock_en = param[0]; + 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; done: kfree(wr_buf); @@ -1387,7 +1425,7 @@ static ssize_t dp_dsc_slice_width_write(struct file *f, const char __user *buf, return -ENOSPC; } - if (parse_write_buffer_into_params(wr_buf, wr_buf_size, + if (parse_write_buffer_into_params(wr_buf, size, (long *)param, buf, max_param_num, ¶m_nums)) { @@ -1411,7 +1449,12 @@ static ssize_t dp_dsc_slice_width_write(struct file *f, const char __user *buf, if (!pipe_ctx || !pipe_ctx->stream) goto done; - aconnector->dsc_settings.dsc_slice_width = param[0]; + 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; done: kfree(wr_buf); @@ -1536,7 +1579,7 @@ static ssize_t dp_dsc_slice_height_write(struct file *f, const char __user *buf, return -ENOSPC; } - if (parse_write_buffer_into_params(wr_buf, wr_buf_size, + if (parse_write_buffer_into_params(wr_buf, size, (long *)param, buf, max_param_num, ¶m_nums)) { @@ -1560,7 +1603,12 @@ static ssize_t dp_dsc_slice_height_write(struct file *f, const char __user *buf, if (!pipe_ctx || !pipe_ctx->stream) goto done; - aconnector->dsc_settings.dsc_slice_height = param[0]; + 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; done: kfree(wr_buf); @@ -1678,7 +1726,7 @@ static ssize_t dp_dsc_bits_per_pixel_write(struct file *f, const char __user *bu return -ENOSPC; } - if (parse_write_buffer_into_params(wr_buf, wr_buf_size, + if (parse_write_buffer_into_params(wr_buf, size, (long *)param, buf, max_param_num, ¶m_nums)) { @@ -2098,6 +2146,7 @@ static const struct { const struct file_operations *fops; } dp_debugfs_entries[] = { {"link_settings", &dp_link_settings_debugfs_fops}, + {"trigger_hotplug", &dp_trigger_hotplug_debugfs_fops}, {"phy_settings", &dp_phy_settings_debugfs_fop}, {"test_pattern", &dp_phy_test_pattern_fops}, #ifdef CONFIG_DRM_AMD_DC_HDCP |