| Message ID | 20240918144343.2876184-5-ankit.k.nautiyal@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Ultrajoiner basic functionality series | expand |
On Wed, Sep 18, 2024 at 08:13:32PM +0530, Ankit Nautiyal wrote: > At the moment, the debugfs for joiner allows only to force enable/disable > pipe joiner for 2 pipes. Modify it to force join 'n' number of pipes, > where n is a valid pipe joiner configuration. > This will help in case of ultra joiner where 4 pipes are joined. > > v2: > -Fix commit message to state that only valid joiner config can be > forced. (Suraj) > -Rename the identifiers to have INTEL_BIG/NONE_JOINER_PIPES. (Suraj) > v3: > -Avoid enum for joiner pipe counts, use bare numbers for better > readability. (Ville) > -Remove redundant prints from debugfs. (Ville) > v4: > -Return -EINVAL if joiner forced to an invalid value. > > Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> > --- > .../drm/i915/display/intel_display_debugfs.c | 63 ++++++++++++++++++- > .../drm/i915/display/intel_display_types.h | 2 +- > drivers/gpu/drm/i915/display/intel_dp.c | 2 +- > 3 files changed, 63 insertions(+), 4 deletions(-) > > diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c > index cda3f6cf724d..5775413c6763 100644 > --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c > +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c > @@ -1504,6 +1504,65 @@ static int intel_crtc_pipe_show(struct seq_file *m, void *unused) > } > DEFINE_SHOW_ATTRIBUTE(intel_crtc_pipe); > > +static int i915_joiner_show(struct seq_file *m, void *data) > +{ > + struct intel_connector *connector = m->private; > + > + seq_printf(m, "%d\n", connector->force_joined_pipes); > + > + return 0; > +} > + > +static ssize_t i915_joiner_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_display *display = to_intel_display(connector); > + int force_join_pipes = 0; 'force_joined_pipes' for consistency > + int ret; > + > + if (len == 0) > + return 0; > + > + ret = kstrtoint_from_user(ubuf, len, 0, &force_join_pipes); > + if (ret < 0) > + return ret; > + > + switch (force_join_pipes) { > + case 0: > + fallthrough; > + case 2: > + connector->force_joined_pipes = force_join_pipes; > + break; > + default: > + drm_dbg(display->drm, "Ignoring Invalid num of pipes %d for force joining\n", > + force_join_pipes); > + connector->force_joined_pipes = 0; I don't think we should do any of that. Just return the error. > + > + return -EINVAL; > + } > + > + *offp += len; > + > + return len; > +} > + > +static int i915_joiner_open(struct inode *inode, struct file *file) > +{ > + return single_open(file, i915_joiner_show, inode->i_private); > +} > + > +static const struct file_operations i915_joiner_fops = { > + .owner = THIS_MODULE, > + .open = i915_joiner_open, > + .read = seq_read, > + .llseek = seq_lseek, > + .release = single_release, > + .write = i915_joiner_write > +}; > + > /** > * intel_connector_debugfs_add - add i915 specific connector debugfs files > * @connector: pointer to a registered intel_connector > @@ -1554,8 +1613,8 @@ void intel_connector_debugfs_add(struct intel_connector *connector) > if (HAS_BIGJOINER(i915) && intel_dp_has_joiner(intel_dp) && > (connector_type == DRM_MODE_CONNECTOR_DisplayPort || > connector_type == DRM_MODE_CONNECTOR_eDP)) { > - debugfs_create_bool("i915_bigjoiner_force_enable", 0644, root, > - &connector->force_bigjoiner_enable); > + debugfs_create_file("i915_joiner_force_enable", 0644, root, > + connector, &i915_joiner_fops); > } > > if (connector_type == DRM_MODE_CONNECTOR_DSI || > diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h > index 000ab373c887..2ac2068aefa4 100644 > --- a/drivers/gpu/drm/i915/display/intel_display_types.h > +++ b/drivers/gpu/drm/i915/display/intel_display_types.h > @@ -524,7 +524,7 @@ struct intel_connector { > > struct intel_dp *mst_port; > > - bool force_bigjoiner_enable; > + int force_joined_pipes; > > struct { > struct drm_dp_aux *dsc_decompression_aux; > diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c > index 19f78432cc8f..2e35a81fa6d1 100644 > --- a/drivers/gpu/drm/i915/display/intel_dp.c > +++ b/drivers/gpu/drm/i915/display/intel_dp.c > @@ -1280,7 +1280,7 @@ bool intel_dp_need_joiner(struct intel_dp *intel_dp, > return false; > > return clock > i915->display.cdclk.max_dotclk_freq || hdisplay > 5120 || > - connector->force_bigjoiner_enable; > + connector->force_joined_pipes == 2; > } > > bool intel_dp_has_dsc(const struct intel_connector *connector) > -- > 2.45.2
diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c index cda3f6cf724d..5775413c6763 100644 --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c @@ -1504,6 +1504,65 @@ static int intel_crtc_pipe_show(struct seq_file *m, void *unused) } DEFINE_SHOW_ATTRIBUTE(intel_crtc_pipe); +static int i915_joiner_show(struct seq_file *m, void *data) +{ + struct intel_connector *connector = m->private; + + seq_printf(m, "%d\n", connector->force_joined_pipes); + + return 0; +} + +static ssize_t i915_joiner_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_display *display = to_intel_display(connector); + int force_join_pipes = 0; + int ret; + + if (len == 0) + return 0; + + ret = kstrtoint_from_user(ubuf, len, 0, &force_join_pipes); + if (ret < 0) + return ret; + + switch (force_join_pipes) { + case 0: + fallthrough; + case 2: + connector->force_joined_pipes = force_join_pipes; + break; + default: + drm_dbg(display->drm, "Ignoring Invalid num of pipes %d for force joining\n", + force_join_pipes); + connector->force_joined_pipes = 0; + + return -EINVAL; + } + + *offp += len; + + return len; +} + +static int i915_joiner_open(struct inode *inode, struct file *file) +{ + return single_open(file, i915_joiner_show, inode->i_private); +} + +static const struct file_operations i915_joiner_fops = { + .owner = THIS_MODULE, + .open = i915_joiner_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .write = i915_joiner_write +}; + /** * intel_connector_debugfs_add - add i915 specific connector debugfs files * @connector: pointer to a registered intel_connector @@ -1554,8 +1613,8 @@ void intel_connector_debugfs_add(struct intel_connector *connector) if (HAS_BIGJOINER(i915) && intel_dp_has_joiner(intel_dp) && (connector_type == DRM_MODE_CONNECTOR_DisplayPort || connector_type == DRM_MODE_CONNECTOR_eDP)) { - debugfs_create_bool("i915_bigjoiner_force_enable", 0644, root, - &connector->force_bigjoiner_enable); + debugfs_create_file("i915_joiner_force_enable", 0644, root, + connector, &i915_joiner_fops); } if (connector_type == DRM_MODE_CONNECTOR_DSI || diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h index 000ab373c887..2ac2068aefa4 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -524,7 +524,7 @@ struct intel_connector { struct intel_dp *mst_port; - bool force_bigjoiner_enable; + int force_joined_pipes; struct { struct drm_dp_aux *dsc_decompression_aux; diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 19f78432cc8f..2e35a81fa6d1 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -1280,7 +1280,7 @@ bool intel_dp_need_joiner(struct intel_dp *intel_dp, return false; return clock > i915->display.cdclk.max_dotclk_freq || hdisplay > 5120 || - connector->force_bigjoiner_enable; + connector->force_joined_pipes == 2; } bool intel_dp_has_dsc(const struct intel_connector *connector)
At the moment, the debugfs for joiner allows only to force enable/disable pipe joiner for 2 pipes. Modify it to force join 'n' number of pipes, where n is a valid pipe joiner configuration. This will help in case of ultra joiner where 4 pipes are joined. v2: -Fix commit message to state that only valid joiner config can be forced. (Suraj) -Rename the identifiers to have INTEL_BIG/NONE_JOINER_PIPES. (Suraj) v3: -Avoid enum for joiner pipe counts, use bare numbers for better readability. (Ville) -Remove redundant prints from debugfs. (Ville) v4: -Return -EINVAL if joiner forced to an invalid value. Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> --- .../drm/i915/display/intel_display_debugfs.c | 63 ++++++++++++++++++- .../drm/i915/display/intel_display_types.h | 2 +- drivers/gpu/drm/i915/display/intel_dp.c | 2 +- 3 files changed, 63 insertions(+), 4 deletions(-)