From: Jani Nikula <jani.nikula@intel.com> To: dri-devel@lists.freedesktop.org Cc: jani.nikula@intel.com, intel-gfx@lists.freedesktop.org Subject: [CI RESEND 04/10] drm/edid: abstract debugfs override EDID set/reset Date: Wed, 29 Jun 2022 12:27:49 +0300 [thread overview] Message-ID: <8f6b4001630cafac5f44aa5913429ac9979743d2.1656494768.git.jani.nikula@intel.com> (raw) In-Reply-To: <cover.1656494768.git.jani.nikula@intel.com> Add functions drm_edid_override_set() and drm_edid_override_reset() to support "edid_override" connector debugfs, and to hide the details about it in drm_edid.c. No functional changes at this time. Also note in the connector.override_edid flag kernel-doc that this is only supposed to be modified by the code doing debugfs EDID override handling. Currently, it is still being modified by amdgpu in create_eml_sink() and handle_edid_mgmt() for reasons unknown. This was added in commit 4562236b3bc0 ("drm/amd/dc: Add dc display driver (v2)") and later moved to amdgpu_dm.c in commit e7b07ceef2a6 ("drm/amd/display: Merge amdgpu_dm_types and amdgpu_dm"). Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> --- drivers/gpu/drm/drm_crtc_internal.h | 2 ++ drivers/gpu/drm/drm_debugfs.c | 21 +++++---------------- drivers/gpu/drm/drm_edid.c | 26 ++++++++++++++++++++++++++ include/drm/drm_connector.h | 6 +++++- 4 files changed, 38 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h index aecab5308bae..56041b604881 100644 --- a/drivers/gpu/drm/drm_crtc_internal.h +++ b/drivers/gpu/drm/drm_crtc_internal.h @@ -286,3 +286,5 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev, /* drm_edid.c */ void drm_mode_fixup_1366x768(struct drm_display_mode *mode); +int drm_edid_override_set(struct drm_connector *connector, const void *edid, size_t size); +int drm_edid_override_reset(struct drm_connector *connector); diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c index fb04b7a984de..493922069c90 100644 --- a/drivers/gpu/drm/drm_debugfs.c +++ b/drivers/gpu/drm/drm_debugfs.c @@ -350,31 +350,20 @@ static ssize_t edid_write(struct file *file, const char __user *ubuf, struct seq_file *m = file->private_data; struct drm_connector *connector = m->private; char *buf; - struct edid *edid; int ret; buf = memdup_user(ubuf, len); if (IS_ERR(buf)) return PTR_ERR(buf); - edid = (struct edid *) buf; - - if (len == 5 && !strncmp(buf, "reset", 5)) { - connector->override_edid = false; - ret = drm_connector_update_edid_property(connector, NULL); - } else if (len < EDID_LENGTH || - EDID_LENGTH * (1 + edid->extensions) > len) - ret = -EINVAL; - else { - connector->override_edid = false; - ret = drm_connector_update_edid_property(connector, edid); - if (!ret) - connector->override_edid = true; - } + if (len == 5 && !strncmp(buf, "reset", 5)) + ret = drm_edid_override_reset(connector); + else + ret = drm_edid_override_set(connector, buf, len); kfree(buf); - return (ret) ? ret : len; + return ret ? ret : len; } /* diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index e360e1a269f4..c3f0f0a5a8a9 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -2161,6 +2161,32 @@ static struct edid *drm_get_override_edid(struct drm_connector *connector, return IS_ERR(override) ? NULL : override; } +/* For debugfs edid_override implementation */ +int drm_edid_override_set(struct drm_connector *connector, const void *edid, + size_t size) +{ + int ret; + + if (size < EDID_LENGTH || edid_size(edid) > size) + return -EINVAL; + + connector->override_edid = false; + + ret = drm_connector_update_edid_property(connector, edid); + if (!ret) + connector->override_edid = true; + + return ret; +} + +/* For debugfs edid_override implementation */ +int drm_edid_override_reset(struct drm_connector *connector) +{ + connector->override_edid = false; + + return drm_connector_update_edid_property(connector, NULL); +} + /** * drm_add_override_edid_modes - add modes from override/firmware EDID * @connector: connector we're probing diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 94b422b55cc1..a1705d6b3fba 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -1527,7 +1527,11 @@ struct drm_connector { struct drm_cmdline_mode cmdline_mode; /** @force: a DRM_FORCE_<foo> state for forced mode sets */ enum drm_connector_force force; - /** @override_edid: has the EDID been overwritten through debugfs for testing? */ + /** + * @override_edid: has the EDID been overwritten through debugfs for + * testing? Do not modify outside of drm_edid_override_set() and + * drm_edid_override_reset(). + */ bool override_edid; /** @epoch_counter: used to detect any other changes in connector, besides status */ u64 epoch_counter; -- 2.30.2
WARNING: multiple messages have this Message-ID (diff)
From: Jani Nikula <jani.nikula@intel.com> To: dri-devel@lists.freedesktop.org Cc: jani.nikula@intel.com, intel-gfx@lists.freedesktop.org Subject: [Intel-gfx] [CI RESEND 04/10] drm/edid: abstract debugfs override EDID set/reset Date: Wed, 29 Jun 2022 12:27:49 +0300 [thread overview] Message-ID: <8f6b4001630cafac5f44aa5913429ac9979743d2.1656494768.git.jani.nikula@intel.com> (raw) In-Reply-To: <cover.1656494768.git.jani.nikula@intel.com> Add functions drm_edid_override_set() and drm_edid_override_reset() to support "edid_override" connector debugfs, and to hide the details about it in drm_edid.c. No functional changes at this time. Also note in the connector.override_edid flag kernel-doc that this is only supposed to be modified by the code doing debugfs EDID override handling. Currently, it is still being modified by amdgpu in create_eml_sink() and handle_edid_mgmt() for reasons unknown. This was added in commit 4562236b3bc0 ("drm/amd/dc: Add dc display driver (v2)") and later moved to amdgpu_dm.c in commit e7b07ceef2a6 ("drm/amd/display: Merge amdgpu_dm_types and amdgpu_dm"). Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> --- drivers/gpu/drm/drm_crtc_internal.h | 2 ++ drivers/gpu/drm/drm_debugfs.c | 21 +++++---------------- drivers/gpu/drm/drm_edid.c | 26 ++++++++++++++++++++++++++ include/drm/drm_connector.h | 6 +++++- 4 files changed, 38 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h index aecab5308bae..56041b604881 100644 --- a/drivers/gpu/drm/drm_crtc_internal.h +++ b/drivers/gpu/drm/drm_crtc_internal.h @@ -286,3 +286,5 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev, /* drm_edid.c */ void drm_mode_fixup_1366x768(struct drm_display_mode *mode); +int drm_edid_override_set(struct drm_connector *connector, const void *edid, size_t size); +int drm_edid_override_reset(struct drm_connector *connector); diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c index fb04b7a984de..493922069c90 100644 --- a/drivers/gpu/drm/drm_debugfs.c +++ b/drivers/gpu/drm/drm_debugfs.c @@ -350,31 +350,20 @@ static ssize_t edid_write(struct file *file, const char __user *ubuf, struct seq_file *m = file->private_data; struct drm_connector *connector = m->private; char *buf; - struct edid *edid; int ret; buf = memdup_user(ubuf, len); if (IS_ERR(buf)) return PTR_ERR(buf); - edid = (struct edid *) buf; - - if (len == 5 && !strncmp(buf, "reset", 5)) { - connector->override_edid = false; - ret = drm_connector_update_edid_property(connector, NULL); - } else if (len < EDID_LENGTH || - EDID_LENGTH * (1 + edid->extensions) > len) - ret = -EINVAL; - else { - connector->override_edid = false; - ret = drm_connector_update_edid_property(connector, edid); - if (!ret) - connector->override_edid = true; - } + if (len == 5 && !strncmp(buf, "reset", 5)) + ret = drm_edid_override_reset(connector); + else + ret = drm_edid_override_set(connector, buf, len); kfree(buf); - return (ret) ? ret : len; + return ret ? ret : len; } /* diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index e360e1a269f4..c3f0f0a5a8a9 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -2161,6 +2161,32 @@ static struct edid *drm_get_override_edid(struct drm_connector *connector, return IS_ERR(override) ? NULL : override; } +/* For debugfs edid_override implementation */ +int drm_edid_override_set(struct drm_connector *connector, const void *edid, + size_t size) +{ + int ret; + + if (size < EDID_LENGTH || edid_size(edid) > size) + return -EINVAL; + + connector->override_edid = false; + + ret = drm_connector_update_edid_property(connector, edid); + if (!ret) + connector->override_edid = true; + + return ret; +} + +/* For debugfs edid_override implementation */ +int drm_edid_override_reset(struct drm_connector *connector) +{ + connector->override_edid = false; + + return drm_connector_update_edid_property(connector, NULL); +} + /** * drm_add_override_edid_modes - add modes from override/firmware EDID * @connector: connector we're probing diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 94b422b55cc1..a1705d6b3fba 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -1527,7 +1527,11 @@ struct drm_connector { struct drm_cmdline_mode cmdline_mode; /** @force: a DRM_FORCE_<foo> state for forced mode sets */ enum drm_connector_force force; - /** @override_edid: has the EDID been overwritten through debugfs for testing? */ + /** + * @override_edid: has the EDID been overwritten through debugfs for + * testing? Do not modify outside of drm_edid_override_set() and + * drm_edid_override_reset(). + */ bool override_edid; /** @epoch_counter: used to detect any other changes in connector, besides status */ u64 epoch_counter; -- 2.30.2
next prev parent reply other threads:[~2022-06-29 9:28 UTC|newest] Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-06-29 9:27 [CI RESEND 00/10] drm/edid: expand on struct drm_edid usage Jani Nikula 2022-06-29 9:27 ` [Intel-gfx] " Jani Nikula 2022-06-29 9:27 ` [CI RESEND 01/10] drm/edid: move drm_connector_update_edid_property() to drm_edid.c Jani Nikula 2022-06-29 9:27 ` [Intel-gfx] " Jani Nikula 2022-06-29 9:27 ` [CI RESEND 02/10] drm/edid: convert drm_connector_update_edid_property() to struct drm_edid Jani Nikula 2022-06-29 9:27 ` [Intel-gfx] " Jani Nikula 2022-06-29 9:27 ` [CI RESEND 03/10] drm/edid: clean up connector update error handling and debug logging Jani Nikula 2022-06-29 9:27 ` [Intel-gfx] " Jani Nikula 2022-06-29 9:27 ` Jani Nikula [this message] 2022-06-29 9:27 ` [Intel-gfx] [CI RESEND 04/10] drm/edid: abstract debugfs override EDID set/reset Jani Nikula 2022-06-29 9:27 ` [CI RESEND 05/10] drm/edid: add drm_edid_connector_update() Jani Nikula 2022-06-29 9:27 ` [Intel-gfx] " Jani Nikula 2022-06-29 9:27 ` [CI RESEND 06/10] drm/probe-helper: add drm_connector_helper_get_modes() Jani Nikula 2022-06-29 9:27 ` [Intel-gfx] " Jani Nikula 2022-06-29 9:27 ` [CI RESEND 07/10] drm/edid: add drm_edid_raw() to access the raw EDID data Jani Nikula 2022-06-29 9:27 ` [Intel-gfx] " Jani Nikula 2022-06-29 9:27 ` [CI RESEND 08/10] drm/edid: do invalid block filtering in-place Jani Nikula 2022-06-29 9:27 ` [Intel-gfx] " Jani Nikula 2022-06-29 9:27 ` [CI RESEND 09/10] drm/edid: add HF-EEODB support to EDID read and allocation Jani Nikula 2022-06-29 9:27 ` [Intel-gfx] " Jani Nikula 2022-06-29 9:27 ` [CI RESEND 10/10] drm/edid: take HF-EEODB extension count into account Jani Nikula 2022-06-29 9:27 ` [Intel-gfx] " Jani Nikula 2022-06-29 11:27 ` [Intel-gfx] ✗ Fi.CI.SPARSE: warning for drm/edid: expand on struct drm_edid usage (rev8) Patchwork 2022-06-29 11:55 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork 2022-06-30 3:55 ` [Intel-gfx] ✗ Fi.CI.IGT: failure " Patchwork 2022-06-30 9:55 ` [CI RESEND 00/10] drm/edid: expand on struct drm_edid usage Jani Nikula 2022-06-30 9:55 ` [Intel-gfx] " Jani Nikula
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