The patch below does not apply to the 6.2-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.2.y git checkout FETCH_HEAD git cherry-pick -x 14e591a1930c2790fe862af5b01ee3ca587f752f # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '16784484026289@kroah.com' --subject-prefix 'PATCH 6.2.y' HEAD^..

Possible dependencies:

14e591a1930c ("drm/i915: Populate encoder->devdata for DSI on icl+") 3f9ffce5765d ("drm/i915: Do panel VBT init early if the VBT declares an explicit panel type") f70f8153e364 ("drm/i915: Introduce intel_panel_init_alloc()")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 14e591a1930c2790fe862af5b01ee3ca587f752f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= ville.syrjala@linux.intel.com Date: Tue, 7 Feb 2023 08:43:36 +0200 Subject: [PATCH] drm/i915: Populate encoder->devdata for DSI on icl+ MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit

We now have some eDP+DSI dual panel systems floating around where the DSI panel is the secondary LFP and thus needs to consult "panel type 2" in VBT in order to locate all the other panel type dependant stuff correctly.

To that end we need to pass in the devdata to intel_bios_init_panel_late(), otherwise it'll just assume we want the primary panel type. So let's try to just populate the vbt.ports[] stuff and encoder->devdata for icl+ DSI panels as well.

We can't do this on older platforms as there we risk a DSI port aliasing with a HDMI/DP port, which is a totally legal thing as the DSI ports live in their own little parallel universe.

Cc: stable@vger.kernel.org Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8016 Signed-off-by: Ville Syrjälä ville.syrjala@linux.intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20230207064337.18697-3-ville.s... Reviewed-by: Jani Nikula jani.nikula@intel.com (cherry picked from commit ba00eb6a4bfbe5194ddda50730aba063951f8ce0) Signed-off-by: Jani Nikula jani.nikula@intel.com

diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c index d56d01f07bb7..468a792e6a40 100644 --- a/drivers/gpu/drm/i915/display/icl_dsi.c +++ b/drivers/gpu/drm/i915/display/icl_dsi.c @@ -2043,7 +2043,8 @@ void icl_dsi_init(struct drm_i915_private *dev_priv) /* attach connector to encoder */ intel_connector_attach_encoder(intel_connector, encoder);

- intel_bios_init_panel_late(dev_priv, &intel_connector->panel, NULL, NULL); + encoder->devdata = intel_bios_encoder_data_lookup(dev_priv, port); + intel_bios_init_panel_late(dev_priv, &intel_connector->panel, encoder->devdata, NULL);

mutex_lock(&dev_priv->drm.mode_config.mutex); intel_panel_add_vbt_lfp_fixed_mode(intel_connector); diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c index 06a2d98d2277..1cd8af88ce50 100644 --- a/drivers/gpu/drm/i915/display/intel_bios.c +++ b/drivers/gpu/drm/i915/display/intel_bios.c @@ -2593,6 +2593,12 @@ intel_bios_encoder_supports_edp(const struct intel_bios_encoder_data *devdata) devdata->child.device_type & DEVICE_TYPE_INTERNAL_CONNECTOR; }

+static bool +intel_bios_encoder_supports_dsi(const struct intel_bios_encoder_data *devdata) +{ + return devdata->child.device_type & DEVICE_TYPE_MIPI_OUTPUT; +} + static int _intel_bios_hdmi_level_shift(const struct intel_bios_encoder_data *devdata) { if (!devdata || devdata->i915->display.vbt.version < 158) @@ -2643,7 +2649,7 @@ static void print_ddi_port(const struct intel_bios_encoder_data *devdata, { struct drm_i915_private *i915 = devdata->i915; const struct child_device_config *child = &devdata->child; - bool is_dvi, is_hdmi, is_dp, is_edp, is_crt, supports_typec_usb, supports_tbt; + bool is_dvi, is_hdmi, is_dp, is_edp, is_dsi, is_crt, supports_typec_usb, supports_tbt; int dp_boost_level, dp_max_link_rate, hdmi_boost_level, hdmi_level_shift, max_tmds_clock;

is_dvi = intel_bios_encoder_supports_dvi(devdata); @@ -2651,13 +2657,14 @@ static void print_ddi_port(const struct intel_bios_encoder_data *devdata, is_crt = intel_bios_encoder_supports_crt(devdata); is_hdmi = intel_bios_encoder_supports_hdmi(devdata); is_edp = intel_bios_encoder_supports_edp(devdata); + is_dsi = intel_bios_encoder_supports_dsi(devdata);

supports_typec_usb = intel_bios_encoder_supports_typec_usb(devdata); supports_tbt = intel_bios_encoder_supports_tbt(devdata);

drm_dbg_kms(&i915->drm, - "Port %c VBT info: CRT:%d DVI:%d HDMI:%d DP:%d eDP:%d LSPCON:%d USB-Type-C:%d TBT:%d DSC:%d\n", - port_name(port), is_crt, is_dvi, is_hdmi, is_dp, is_edp, + "Port %c VBT info: CRT:%d DVI:%d HDMI:%d DP:%d eDP:%d DSI:%d LSPCON:%d USB-Type-C:%d TBT:%d DSC:%d\n", + port_name(port), is_crt, is_dvi, is_hdmi, is_dp, is_edp, is_dsi, HAS_LSPCON(i915) && child->lspcon, supports_typec_usb, supports_tbt, devdata->dsc != NULL); @@ -2710,6 +2717,8 @@ static void parse_ddi_port(struct intel_bios_encoder_data *devdata) enum port port;

port = dvo_port_to_port(i915, child->dvo_port); + if (port == PORT_NONE && DISPLAY_VER(i915) >= 11) + port = dsi_dvo_port_to_port(i915, child->dvo_port); if (port == PORT_NONE) return;