| Message ID | 20231116103704.11353-1-stanislav.lisovskiy@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/i915: Add bigjoiner force enable option to debugfs | expand |
On Thu-16-11-2023 04:07 pm, Stanislav Lisovskiy wrote: > For validation purposes, it might be useful to be able to > force Bigjoiner mode, even if current dotclock/resolution > do not require that. > Lets add such to option to debugfs. Do we have any IGT to validate this? - Bhanu > > v2: - Apparently intel_dp_need_bigjoiner can't be used, when > debugfs entry is created so lets just check manually > the DISPLAY_VER. > > v3: - Switch to intel_connector from drm_connector(Jani Nikula) > - Remove redundant modeset lock(Jani Nikula) > - Use kstrtobool_from_user for boolean value(Jani Nikula) > > v4: - Apply the changes to proper function(Jani Nikula) > > v5: - Removed unnecessary check from i915_bigjoiner_enable_show > (Ville Syrjälä) > - Added eDP connector check to intel_connector_debugfs_add > (Ville Syrjälä) > - Removed debug message in order to prevent dmesg flooding > (Ville Syrjälä) > > Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com> > --- > .../drm/i915/display/intel_display_debugfs.c | 59 +++++++++++++++++++ > .../drm/i915/display/intel_display_types.h | 2 + > drivers/gpu/drm/i915/display/intel_dp.c | 3 +- > 3 files changed, 63 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c > index 915420d0cef8f..aa95ecf2458ee 100644 > --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c > +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c > @@ -1414,6 +1414,22 @@ out: drm_modeset_unlock(&dev->mode_config.connection_mutex); > return ret; > } > > +static int i915_bigjoiner_enable_show(struct seq_file *m, void *data) > +{ > + struct intel_connector *connector = to_intel_connector(m->private); > + struct intel_encoder *encoder = intel_attached_encoder(connector); > + struct intel_dp *intel_dp; > + > + if (!encoder) > + return -ENODEV; > + > + intel_dp = enc_to_intel_dp(encoder); > + > + seq_printf(m, "Bigjoiner enable: %d\n", intel_dp->force_bigjoiner_enable); > + > + return 0; > +} > + > static ssize_t i915_dsc_output_format_write(struct file *file, > const char __user *ubuf, > size_t len, loff_t *offp) > @@ -1435,12 +1451,39 @@ static ssize_t i915_dsc_output_format_write(struct file *file, > return len; > } > > +static ssize_t i915_bigjoiner_enable_fops_write(struct file *file, > + const char __user *ubuf, > + size_t len, loff_t *offp) > +{ > + struct seq_file *m = file->private_data; > + struct intel_connector *connector = m->private; > + struct intel_encoder *encoder = intel_attached_encoder(connector); > + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); > + bool bigjoiner_en = 0; > + int ret; > + > + ret = kstrtobool_from_user(ubuf, len, &bigjoiner_en); > + if (ret < 0) > + return ret; > + > + intel_dp->force_bigjoiner_enable = bigjoiner_en; > + *offp += len; > + > + return len; > +} > + > static int i915_dsc_output_format_open(struct inode *inode, > struct file *file) > { > return single_open(file, i915_dsc_output_format_show, inode->i_private); > } > > +static int i915_bigjoiner_enable_open(struct inode *inode, > + struct file *file) > +{ > + return single_open(file, i915_bigjoiner_enable_show, inode->i_private); > +} > + > static const struct file_operations i915_dsc_output_format_fops = { > .owner = THIS_MODULE, > .open = i915_dsc_output_format_open, > @@ -1529,6 +1572,15 @@ static const struct file_operations i915_dsc_fractional_bpp_fops = { > .write = i915_dsc_fractional_bpp_write > }; > > +static const struct file_operations i915_bigjoiner_enable_fops = { > + .owner = THIS_MODULE, > + .open = i915_bigjoiner_enable_open, > + .read = seq_read, > + .llseek = seq_lseek, > + .release = single_release, > + .write = i915_bigjoiner_enable_fops_write > +}; > + > /* > * Returns the Current CRTC's bpc. > * Example usage: cat /sys/kernel/debug/dri/0/crtc-0/i915_current_bpc > @@ -1611,6 +1663,13 @@ void intel_connector_debugfs_add(struct intel_connector *intel_connector) > connector, &i915_dsc_fractional_bpp_fops); > } > > + if (DISPLAY_VER(dev_priv) >= 11 && > + (intel_connector->base.connector_type == DRM_MODE_CONNECTOR_DisplayPort || > + intel_connector->base.connector_type == DRM_MODE_CONNECTOR_eDP)) { > + debugfs_create_file("i915_bigjoiner_force_enable", 0644, root, > + &intel_connector->base, &i915_bigjoiner_enable_fops); > + } > + > if (connector->connector_type == DRM_MODE_CONNECTOR_DSI || > connector->connector_type == DRM_MODE_CONNECTOR_eDP || > connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort || > diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h > index 9a44350ba05dd..559302ff79c1a 100644 > --- a/drivers/gpu/drm/i915/display/intel_display_types.h > +++ b/drivers/gpu/drm/i915/display/intel_display_types.h > @@ -1764,6 +1764,8 @@ struct intel_dp { > bool is_mst; > int active_mst_links; > > + bool force_bigjoiner_enable; > + > /* connector directly attached - won't be use for modeset in mst world */ > struct intel_connector *attached_connector; > > diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c > index 54bd0bffa9f08..5b8411b9fc30b 100644 > --- a/drivers/gpu/drm/i915/display/intel_dp.c > +++ b/drivers/gpu/drm/i915/display/intel_dp.c > @@ -1172,7 +1172,8 @@ bool intel_dp_need_bigjoiner(struct intel_dp *intel_dp, > if (!intel_dp_can_bigjoiner(intel_dp)) > return false; > > - return clock > i915->max_dotclk_freq || hdisplay > 5120; > + return clock > i915->max_dotclk_freq || hdisplay > 5120 || > + intel_dp->force_bigjoiner_enable; > } > > static enum drm_mode_status
Hello Stan, On 11/16/2023 4:07 PM, Stanislav Lisovskiy wrote: > For validation purposes, it might be useful to be able to > force Bigjoiner mode, even if current dotclock/resolution > do not require that. > Lets add such to option to debugfs. > > v2: - Apparently intel_dp_need_bigjoiner can't be used, when > debugfs entry is created so lets just check manually > the DISPLAY_VER. > > v3: - Switch to intel_connector from drm_connector(Jani Nikula) > - Remove redundant modeset lock(Jani Nikula) > - Use kstrtobool_from_user for boolean value(Jani Nikula) > > v4: - Apply the changes to proper function(Jani Nikula) > > v5: - Removed unnecessary check from i915_bigjoiner_enable_show > (Ville Syrjälä) > - Added eDP connector check to intel_connector_debugfs_add > (Ville Syrjälä) > - Removed debug message in order to prevent dmesg flooding > (Ville Syrjälä) > > Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com> > --- > .../drm/i915/display/intel_display_debugfs.c | 59 +++++++++++++++++++ > .../drm/i915/display/intel_display_types.h | 2 + > drivers/gpu/drm/i915/display/intel_dp.c | 3 +- > 3 files changed, 63 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c > index 915420d0cef8f..aa95ecf2458ee 100644 > --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c > +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c > @@ -1414,6 +1414,22 @@ out: drm_modeset_unlock(&dev->mode_config.connection_mutex); > return ret; > } > > +static int i915_bigjoiner_enable_show(struct seq_file *m, void *data) > +{ > + struct intel_connector *connector = to_intel_connector(m->private); > + struct intel_encoder *encoder = intel_attached_encoder(connector); > + struct intel_dp *intel_dp; > + > + if (!encoder) > + return -ENODEV; > + > + intel_dp = enc_to_intel_dp(encoder); > + > + seq_printf(m, "Bigjoiner enable: %d\n", intel_dp->force_bigjoiner_enable); > + > + return 0; > +} > + > static ssize_t i915_dsc_output_format_write(struct file *file, > const char __user *ubuf, > size_t len, loff_t *offp) > @@ -1435,12 +1451,39 @@ static ssize_t i915_dsc_output_format_write(struct file *file, > return len; > } > > +static ssize_t i915_bigjoiner_enable_fops_write(struct file *file, > + const char __user *ubuf, > + size_t len, loff_t *offp) > +{ > + struct seq_file *m = file->private_data; > + struct intel_connector *connector = m->private; > + struct intel_encoder *encoder = intel_attached_encoder(connector); > + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); > + bool bigjoiner_en = 0; > + int ret; > + > + ret = kstrtobool_from_user(ubuf, len, &bigjoiner_en); > + if (ret < 0) > + return ret; > + > + intel_dp->force_bigjoiner_enable = bigjoiner_en; > + *offp += len; > + > + return len; > +} > + > static int i915_dsc_output_format_open(struct inode *inode, > struct file *file) > { > return single_open(file, i915_dsc_output_format_show, inode->i_private); > } > > +static int i915_bigjoiner_enable_open(struct inode *inode, > + struct file *file) > +{ > + return single_open(file, i915_bigjoiner_enable_show, inode->i_private); > +} > + > static const struct file_operations i915_dsc_output_format_fops = { > .owner = THIS_MODULE, > .open = i915_dsc_output_format_open, > @@ -1529,6 +1572,15 @@ static const struct file_operations i915_dsc_fractional_bpp_fops = { > .write = i915_dsc_fractional_bpp_write > }; > > +static const struct file_operations i915_bigjoiner_enable_fops = { > + .owner = THIS_MODULE, > + .open = i915_bigjoiner_enable_open, > + .read = seq_read, > + .llseek = seq_lseek, > + .release = single_release, > + .write = i915_bigjoiner_enable_fops_write > +}; > + > /* > * Returns the Current CRTC's bpc. > * Example usage: cat /sys/kernel/debug/dri/0/crtc-0/i915_current_bpc > @@ -1611,6 +1663,13 @@ void intel_connector_debugfs_add(struct intel_connector *intel_connector) > connector, &i915_dsc_fractional_bpp_fops); > } > > + if (DISPLAY_VER(dev_priv) >= 11 && > + (intel_connector->base.connector_type == DRM_MODE_CONNECTOR_DisplayPort || > + intel_connector->base.connector_type == DRM_MODE_CONNECTOR_eDP)) { > + debugfs_create_file("i915_bigjoiner_force_enable", 0644, root, > + &intel_connector->base, &i915_bigjoiner_enable_fops); > + } > > Can we force bigjoiner for HDMI? > > + > if (connector->connector_type == DRM_MODE_CONNECTOR_DSI || > connector->connector_type == DRM_MODE_CONNECTOR_eDP || > connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort || > diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h > index 9a44350ba05dd..559302ff79c1a 100644 > --- a/drivers/gpu/drm/i915/display/intel_display_types.h > +++ b/drivers/gpu/drm/i915/display/intel_display_types.h > @@ -1764,6 +1764,8 @@ struct intel_dp { > bool is_mst; > int active_mst_links; > > + bool force_bigjoiner_enable; > + > /* connector directly attached - won't be use for modeset in mst world */ > struct intel_connector *attached_connector; > > diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c > index 54bd0bffa9f08..5b8411b9fc30b 100644 > --- a/drivers/gpu/drm/i915/display/intel_dp.c > +++ b/drivers/gpu/drm/i915/display/intel_dp.c > @@ -1172,7 +1172,8 @@ bool intel_dp_need_bigjoiner(struct intel_dp *intel_dp, > if (!intel_dp_can_bigjoiner(intel_dp)) > return false; > > - return clock > i915->max_dotclk_freq || hdisplay > 5120; > + return clock > i915->max_dotclk_freq || hdisplay > 5120 || > + intel_dp->force_bigjoiner_enable; > } > > static enum drm_mode_status
diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c index 915420d0cef8f..aa95ecf2458ee 100644 --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c @@ -1414,6 +1414,22 @@ out: drm_modeset_unlock(&dev->mode_config.connection_mutex); return ret; } +static int i915_bigjoiner_enable_show(struct seq_file *m, void *data) +{ + struct intel_connector *connector = to_intel_connector(m->private); + struct intel_encoder *encoder = intel_attached_encoder(connector); + struct intel_dp *intel_dp; + + if (!encoder) + return -ENODEV; + + intel_dp = enc_to_intel_dp(encoder); + + seq_printf(m, "Bigjoiner enable: %d\n", intel_dp->force_bigjoiner_enable); + + return 0; +} + static ssize_t i915_dsc_output_format_write(struct file *file, const char __user *ubuf, size_t len, loff_t *offp) @@ -1435,12 +1451,39 @@ static ssize_t i915_dsc_output_format_write(struct file *file, return len; } +static ssize_t i915_bigjoiner_enable_fops_write(struct file *file, + const char __user *ubuf, + size_t len, loff_t *offp) +{ + struct seq_file *m = file->private_data; + struct intel_connector *connector = m->private; + struct intel_encoder *encoder = intel_attached_encoder(connector); + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); + bool bigjoiner_en = 0; + int ret; + + ret = kstrtobool_from_user(ubuf, len, &bigjoiner_en); + if (ret < 0) + return ret; + + intel_dp->force_bigjoiner_enable = bigjoiner_en; + *offp += len; + + return len; +} + static int i915_dsc_output_format_open(struct inode *inode, struct file *file) { return single_open(file, i915_dsc_output_format_show, inode->i_private); } +static int i915_bigjoiner_enable_open(struct inode *inode, + struct file *file) +{ + return single_open(file, i915_bigjoiner_enable_show, inode->i_private); +} + static const struct file_operations i915_dsc_output_format_fops = { .owner = THIS_MODULE, .open = i915_dsc_output_format_open, @@ -1529,6 +1572,15 @@ static const struct file_operations i915_dsc_fractional_bpp_fops = { .write = i915_dsc_fractional_bpp_write }; +static const struct file_operations i915_bigjoiner_enable_fops = { + .owner = THIS_MODULE, + .open = i915_bigjoiner_enable_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .write = i915_bigjoiner_enable_fops_write +}; + /* * Returns the Current CRTC's bpc. * Example usage: cat /sys/kernel/debug/dri/0/crtc-0/i915_current_bpc @@ -1611,6 +1663,13 @@ void intel_connector_debugfs_add(struct intel_connector *intel_connector) connector, &i915_dsc_fractional_bpp_fops); } + if (DISPLAY_VER(dev_priv) >= 11 && + (intel_connector->base.connector_type == DRM_MODE_CONNECTOR_DisplayPort || + intel_connector->base.connector_type == DRM_MODE_CONNECTOR_eDP)) { + debugfs_create_file("i915_bigjoiner_force_enable", 0644, root, + &intel_connector->base, &i915_bigjoiner_enable_fops); + } + if (connector->connector_type == DRM_MODE_CONNECTOR_DSI || connector->connector_type == DRM_MODE_CONNECTOR_eDP || connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort || diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h index 9a44350ba05dd..559302ff79c1a 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -1764,6 +1764,8 @@ struct intel_dp { bool is_mst; int active_mst_links; + bool force_bigjoiner_enable; + /* connector directly attached - won't be use for modeset in mst world */ struct intel_connector *attached_connector; diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 54bd0bffa9f08..5b8411b9fc30b 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -1172,7 +1172,8 @@ bool intel_dp_need_bigjoiner(struct intel_dp *intel_dp, if (!intel_dp_can_bigjoiner(intel_dp)) return false; - return clock > i915->max_dotclk_freq || hdisplay > 5120; + return clock > i915->max_dotclk_freq || hdisplay > 5120 || + intel_dp->force_bigjoiner_enable; } static enum drm_mode_status
For validation purposes, it might be useful to be able to force Bigjoiner mode, even if current dotclock/resolution do not require that. Lets add such to option to debugfs. v2: - Apparently intel_dp_need_bigjoiner can't be used, when debugfs entry is created so lets just check manually the DISPLAY_VER. v3: - Switch to intel_connector from drm_connector(Jani Nikula) - Remove redundant modeset lock(Jani Nikula) - Use kstrtobool_from_user for boolean value(Jani Nikula) v4: - Apply the changes to proper function(Jani Nikula) v5: - Removed unnecessary check from i915_bigjoiner_enable_show (Ville Syrjälä) - Added eDP connector check to intel_connector_debugfs_add (Ville Syrjälä) - Removed debug message in order to prevent dmesg flooding (Ville Syrjälä) Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com> --- .../drm/i915/display/intel_display_debugfs.c | 59 +++++++++++++++++++ .../drm/i915/display/intel_display_types.h | 2 + drivers/gpu/drm/i915/display/intel_dp.c | 3 +- 3 files changed, 63 insertions(+), 1 deletion(-)