From 5f8693796c06ded7d88bf1d9009cdc406e31f3b1 Mon Sep 17 00:00:00 2001 From: Bhawanpreet Lakha Date: Mon, 24 Feb 2020 14:55:53 -0500 Subject: drm/amd/display: add HDCP caps debugfs Add debugfs to get HDCP capability. This is also useful for kms_content_protection igt test. Use: cat /sys/kernel/debug/dri/0/DP-1/hdcp_sink_capability cat /sys/kernel/debug/dri/0/HDMI-A-1/hdcp_sink_capability Signed-off-by: Bhawanpreet Lakha Reviewed-by: Rodrigo Siqueira Signed-off-by: Alex Deucher --- .../drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 61 ++++++++++++++++++++++ 1 file changed, 61 insertions(+) (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c') 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 0461fecd68db..4b695f6a80c6 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 @@ -838,6 +838,44 @@ static int vrr_range_show(struct seq_file *m, void *data) return 0; } +#ifdef CONFIG_DRM_AMD_DC_HDCP +/* + * 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); + hdcp2_cap = dc_link_is_hdcp22(aconnector->dc_link); + + + 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; +} +#endif /* function description * * generic SDP message access for testing @@ -964,6 +1002,9 @@ DEFINE_SHOW_ATTRIBUTE(dmub_fw_state); DEFINE_SHOW_ATTRIBUTE(dmub_tracebuffer); DEFINE_SHOW_ATTRIBUTE(output_bpc); DEFINE_SHOW_ATTRIBUTE(vrr_range); +#ifdef CONFIG_DRM_AMD_DC_HDCP +DEFINE_SHOW_ATTRIBUTE(hdcp_sink_capability); +#endif static const struct file_operations dp_link_settings_debugfs_fops = { .owner = THIS_MODULE, @@ -1019,12 +1060,23 @@ static const struct { {"test_pattern", &dp_phy_test_pattern_fops}, {"output_bpc", &output_bpc_fops}, {"vrr_range", &vrr_range_fops}, +#ifdef CONFIG_DRM_AMD_DC_HDCP + {"hdcp_sink_capability", &hdcp_sink_capability_fops}, +#endif {"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} }; +#ifdef CONFIG_DRM_AMD_DC_HDCP +static const struct { + char *name; + const struct file_operations *fops; +} hdmi_debugfs_entries[] = { + {"hdcp_sink_capability", &hdcp_sink_capability_fops} +}; +#endif /* * Force YUV420 output if available from the given mode */ @@ -1093,6 +1145,15 @@ void connector_debugfs_init(struct amdgpu_dm_connector *connector) connector->debugfs_dpcd_address = 0; connector->debugfs_dpcd_size = 0; +#ifdef CONFIG_DRM_AMD_DC_HDCP + 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); + } + } +#endif } /* -- cgit v1.2.3-70-g09d2 From fefe92fe747ca74c6f127833188d4ff02d6f4e11 Mon Sep 17 00:00:00 2001 From: Anthony Koo Date: Fri, 27 Mar 2020 18:23:16 -0400 Subject: drm/amd/display: make all backlight calls link based [Why] Backlight adjustment is tied to a specific display. So make the calls target a link rather than making it a global state. [How] make all backlight calls link based Signed-off-by: Anthony Koo Reviewed-by: Tony Cheng Acked-by: Rodrigo Siqueira Signed-off-by: Alex Deucher --- .../drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 10 +++++--- drivers/gpu/drm/amd/display/dc/core/dc.c | 21 --------------- drivers/gpu/drm/amd/display/dc/core/dc_link.c | 30 ++++++++++++++++++---- drivers/gpu/drm/amd/display/dc/dc.h | 2 -- drivers/gpu/drm/amd/display/dc/dc_link.h | 2 ++ 5 files changed, 33 insertions(+), 32 deletions(-) (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c') 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 4b695f6a80c6..b3b7efd973ca 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 @@ -1228,8 +1228,9 @@ static int current_backlight_read(struct seq_file *m, void *data) struct drm_info_node *node = (struct drm_info_node *)m->private; struct drm_device *dev = node->minor->dev; struct amdgpu_device *adev = dev->dev_private; - struct dc *dc = adev->dm.dc; - unsigned int backlight = dc_get_current_backlight_pwm(dc); + struct amdgpu_display_manager *dm = &adev->dm; + + unsigned int backlight = dc_link_get_backlight_level(dm->backlight_link); seq_printf(m, "0x%x\n", backlight); return 0; @@ -1245,8 +1246,9 @@ static int target_backlight_read(struct seq_file *m, void *data) struct drm_info_node *node = (struct drm_info_node *)m->private; struct drm_device *dev = node->minor->dev; struct amdgpu_device *adev = dev->dev_private; - struct dc *dc = adev->dm.dc; - unsigned int backlight = dc_get_target_backlight_pwm(dc); + struct amdgpu_display_manager *dm = &adev->dm; + + unsigned int backlight = dc_link_get_target_backlight_pwm(dm->backlight_link); seq_printf(m, "0x%x\n", backlight); return 0; diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index d5ecf2031255..0f7810571be3 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -2646,33 +2646,12 @@ void dc_set_power_state( void dc_resume(struct dc *dc) { - uint32_t i; for (i = 0; i < dc->link_count; i++) core_link_resume(dc->links[i]); } -unsigned int dc_get_current_backlight_pwm(struct dc *dc) -{ - struct abm *abm = dc->res_pool->abm; - - if (abm) - return abm->funcs->get_current_backlight(abm); - - return 0; -} - -unsigned int dc_get_target_backlight_pwm(struct dc *dc) -{ - struct abm *abm = dc->res_pool->abm; - - if (abm) - return abm->funcs->get_target_backlight(abm); - - return 0; -} - bool dc_is_dmcu_initialized(struct dc *dc) { struct dmcu *dmcu = dc->res_pool->dmcu; diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c index a926c1c3f57d..a784fd2078a8 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -2450,6 +2450,16 @@ int dc_link_get_backlight_level(const struct dc_link *link) return (int) abm->funcs->get_current_backlight(abm); } +int dc_link_get_target_backlight_pwm(const struct dc_link *link) +{ + struct abm *abm = link->ctx->dc->res_pool->abm; + + if (abm == NULL || abm->funcs->get_target_backlight == NULL) + return DC_ERROR_UNEXPECTED; + + return (int) abm->funcs->get_target_backlight(abm); +} + bool dc_link_set_backlight_level(const struct dc_link *link, uint32_t backlight_pwm_u16_16, uint32_t frame_ramp) @@ -2507,14 +2517,24 @@ bool dc_link_set_backlight_level(const struct dc_link *link, bool dc_link_set_abm_disable(const struct dc_link *link) { struct dc *dc = link->ctx->dc; - struct abm *abm = dc->res_pool->abm; + struct abm *abm = NULL; + bool success = false; + int i; - if ((abm == NULL) || (abm->funcs->set_backlight_level_pwm == NULL)) - return false; + for (i = 0; i < MAX_PIPES; i++) { + struct pipe_ctx pipe_ctx = dc->current_state->res_ctx.pipe_ctx[i]; + struct dc_stream_state *stream = pipe_ctx.stream; + + if (stream && stream->link == link) { + abm = pipe_ctx.stream_res.abm; + break; + } + } - abm->funcs->set_abm_immediate_disable(abm); + if (abm) + success = abm->funcs->set_abm_immediate_disable(abm); - return true; + return success; } bool dc_link_set_psr_allow_active(struct dc_link *link, bool allow_active, bool wait) diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h index c46d4f8d4fe8..5432ca1657b1 100644 --- a/drivers/gpu/drm/amd/display/dc/dc.h +++ b/drivers/gpu/drm/amd/display/dc/dc.h @@ -1139,8 +1139,6 @@ void dc_set_power_state( struct dc *dc, enum dc_acpi_cm_power_state power_state); void dc_resume(struct dc *dc); -unsigned int dc_get_current_backlight_pwm(struct dc *dc); -unsigned int dc_get_target_backlight_pwm(struct dc *dc); #if defined(CONFIG_DRM_AMD_DC_HDCP) /* diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h index 34c6527c7c3f..72b22dd50f0d 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_link.h +++ b/drivers/gpu/drm/amd/display/dc/dc_link.h @@ -217,6 +217,8 @@ bool dc_link_set_default_brightness_aux(struct dc_link *link); int dc_link_get_backlight_level(const struct dc_link *dc_link); +int dc_link_get_target_backlight_pwm(const struct dc_link *link); + bool dc_link_set_abm_disable(const struct dc_link *dc_link); bool dc_link_set_psr_allow_active(struct dc_link *dc_link, bool enable, bool wait); -- cgit v1.2.3-70-g09d2