From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Try to deal with duplicate child devices for the same DDI port
by attempting to initialize them in VBT defined order The first
on to succeed for a specific DDI port will be the one we use.
We'll also get rid of i915->display.vbt.ports[] here as any conflicts
will now be handled at encoder registration time rather than during
VBT parsing. Note that intel_bios_encoder_data_lookup() still remaims
for pre-DDI DP/HDMI ports as those don't (at least yet) use VBT
driven initialization.
TODO: DSI dual link handling is sketchy at best
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/display/icl_dsi.c | 11 ++--
drivers/gpu/drm/i915/display/icl_dsi.h | 6 +-
drivers/gpu/drm/i915/display/intel_bios.c | 65 ++++++++++++++-----
drivers/gpu/drm/i915/display/intel_bios.h | 6 ++
drivers/gpu/drm/i915/display/intel_ddi.c | 49 +++++++++++---
drivers/gpu/drm/i915/display/intel_ddi.h | 5 +-
drivers/gpu/drm/i915/display/intel_display.c | 11 +---
.../gpu/drm/i915/display/intel_display_core.h | 2 -
8 files changed, 107 insertions(+), 48 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c
index 59a2a289d9be..475f4f587c79 100644
--- a/drivers/gpu/drm/i915/display/icl_dsi.c
+++ b/drivers/gpu/drm/i915/display/icl_dsi.c
@@ -1933,16 +1933,14 @@ static void icl_dsi_add_properties(struct intel_connector *connector)
fixed_mode->vdisplay);
}
-void icl_dsi_init(struct drm_i915_private *dev_priv)
+void icl_dsi_init(struct drm_i915_private *dev_priv,
+ const struct intel_bios_encoder_data *devdata,
+ enum port port)
{
struct intel_dsi *intel_dsi;
struct intel_encoder *encoder;
struct intel_connector *intel_connector;
struct drm_connector *connector;
- enum port port;
-
- if (!intel_bios_is_dsi_present(dev_priv, &port))
- return;
intel_dsi = kzalloc(sizeof(*intel_dsi), GFP_KERNEL);
if (!intel_dsi)
@@ -1958,6 +1956,8 @@ void icl_dsi_init(struct drm_i915_private *dev_priv)
intel_dsi->attached_connector = intel_connector;
connector = &intel_connector->base;
+ encoder->devdata = devdata;
+
/* register DSI encoder with DRM subsystem */
drm_encoder_init(&dev_priv->drm, &encoder->base, &gen11_dsi_encoder_funcs,
DRM_MODE_ENCODER_DSI, "DSI %c", port_name(port));
@@ -1995,7 +1995,6 @@ void icl_dsi_init(struct drm_i915_private *dev_priv)
intel_dsi->panel_power_off_time = ktime_get_boottime();
- 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);
diff --git a/drivers/gpu/drm/i915/display/icl_dsi.h b/drivers/gpu/drm/i915/display/icl_dsi.h
index b4861b56b5b2..ac42f2dc21ec 100644
--- a/drivers/gpu/drm/i915/display/icl_dsi.h
+++ b/drivers/gpu/drm/i915/display/icl_dsi.h
@@ -6,10 +6,14 @@
#ifndef __ICL_DSI_H__
#define __ICL_DSI_H__
+enum port;
struct drm_i915_private;
+struct intel_bios_encoder_data;
struct intel_crtc_state;
-void icl_dsi_init(struct drm_i915_private *i915);
+void icl_dsi_init(struct drm_i915_private *i915,
+ const struct intel_bios_encoder_data *devdata,
+ enum port port);
void icl_dsi_frame_update(struct intel_crtc_state *crtc_state);
#endif /* __ICL_DSI_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
index d1bf725ee9b3..7d2e843681f3 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -2484,7 +2484,7 @@ intel_bios_encoder_supports_edp(const struct intel_bios_encoder_data *devdata)
devdata->child.device_type & DEVICE_TYPE_INTERNAL_CONNECTOR;
}
-static bool
+bool
intel_bios_encoder_supports_dsi(const struct intel_bios_encoder_data *devdata)
{
return devdata->child.device_type & DEVICE_TYPE_MIPI_OUTPUT;
@@ -2542,13 +2542,19 @@ static bool is_port_valid(struct drm_i915_private *i915, enum port port)
return true;
}
-static void print_ddi_port(const struct intel_bios_encoder_data *devdata,
- enum port port)
+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_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;
+ 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;
is_dvi = intel_bios_encoder_supports_dvi(devdata);
is_dp = intel_bios_encoder_supports_dp(devdata);
@@ -2628,16 +2634,7 @@ static void parse_ddi_port(struct intel_bios_encoder_data *devdata)
return;
}
- if (i915->display.vbt.ports[port]) {
- drm_dbg_kms(&i915->drm,
- "More than one child device for port %c in VBT, using the first.\n",
- port_name(port));
- return;
- }
-
sanitize_device_type(devdata, port);
-
- i915->display.vbt.ports[port] = devdata;
}
static bool has_ddi_port_info(struct drm_i915_private *i915)
@@ -2648,7 +2645,6 @@ static bool has_ddi_port_info(struct drm_i915_private *i915)
static void parse_ddi_ports(struct drm_i915_private *i915)
{
struct intel_bios_encoder_data *devdata;
- enum port port;
if (!has_ddi_port_info(i915))
return;
@@ -2656,10 +2652,8 @@ static void parse_ddi_ports(struct drm_i915_private *i915)
list_for_each_entry(devdata, &i915->display.vbt.display_devices, node)
parse_ddi_port(devdata);
- for_each_port(port) {
- if (i915->display.vbt.ports[port])
- print_ddi_port(i915->display.vbt.ports[port], port);
- }
+ list_for_each_entry(devdata, &i915->display.vbt.display_devices, node)
+ print_ddi_port(devdata);
}
static void
@@ -3584,5 +3578,40 @@ bool intel_bios_encoder_hpd_invert(const struct intel_bios_encoder_data *devdata
const struct intel_bios_encoder_data *
intel_bios_encoder_data_lookup(struct drm_i915_private *i915, enum port port)
{
- return i915->display.vbt.ports[port];
+ struct intel_bios_encoder_data *devdata;
+
+ list_for_each_entry(devdata, &i915->display.vbt.display_devices, node) {
+ const struct child_device_config *child = &devdata->child;
+ enum port p;
+
+ p = dvo_port_to_port(i915, child->dvo_port);
+ if (p == PORT_NONE && DISPLAY_VER(i915) >= 11)
+ p = dsi_dvo_port_to_port(i915, child->dvo_port);
+
+ if (p == port)
+ return devdata;
+ }
+
+ return NULL;
+}
+
+void intel_bios_for_each_encoder(struct drm_i915_private *i915,
+ void (*func)(struct drm_i915_private *i915,
+ const struct intel_bios_encoder_data *devdata,
+ enum port port))
+{
+ struct intel_bios_encoder_data *devdata;
+
+ list_for_each_entry(devdata, &i915->display.vbt.display_devices, node) {
+ const struct child_device_config *child = &devdata->child;
+ 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)
+ continue;
+
+ func(i915, devdata, port);
+ }
}
diff --git a/drivers/gpu/drm/i915/display/intel_bios.h b/drivers/gpu/drm/i915/display/intel_bios.h
index 45fae97d9719..fdc847211a84 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.h
+++ b/drivers/gpu/drm/i915/display/intel_bios.h
@@ -263,6 +263,7 @@ bool intel_bios_encoder_supports_dp(const struct intel_bios_encoder_data *devdat
bool intel_bios_encoder_supports_edp(const struct intel_bios_encoder_data *devdata);
bool intel_bios_encoder_supports_typec_usb(const struct intel_bios_encoder_data *devdata);
bool intel_bios_encoder_supports_tbt(const struct intel_bios_encoder_data *devdata);
+bool intel_bios_encoder_supports_dsi(const struct intel_bios_encoder_data *devdata);
bool intel_bios_encoder_supports_dp_dual_mode(const struct intel_bios_encoder_data *devdata);
bool intel_bios_encoder_is_lspcon(const struct intel_bios_encoder_data *devdata);
bool intel_bios_encoder_lane_reversal(const struct intel_bios_encoder_data *devdata);
@@ -276,4 +277,9 @@ int intel_bios_hdmi_ddc_pin(const struct intel_bios_encoder_data *devdata);
int intel_bios_hdmi_level_shift(const struct intel_bios_encoder_data *devdata);
int intel_bios_hdmi_max_tmds_clock(const struct intel_bios_encoder_data *devdata);
+void intel_bios_for_each_encoder(struct drm_i915_private *i915,
+ void (*func)(struct drm_i915_private *i915,
+ const struct intel_bios_encoder_data *devdata,
+ enum port port));
+
#endif /* _INTEL_BIOS_H_ */
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 9e4e6482aa26..7bfcd52e4645 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -32,6 +32,7 @@
#include "i915_drv.h"
#include "i915_reg.h"
+#include "icl_dsi.h"
#include "intel_audio.h"
#include "intel_audio_regs.h"
#include "intel_backlight.h"
@@ -4684,11 +4685,32 @@ static bool need_aux_ch(struct intel_encoder *encoder, bool init_dp)
return init_dp || intel_phy_is_tc(i915, phy);
}
-void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
+static bool assert_has_icl_dsi(struct drm_i915_private *i915)
+{
+ return !drm_WARN(&i915->drm, !IS_ALDERLAKE_P(i915) &&
+ !IS_TIGERLAKE(i915) && DISPLAY_VER(i915) != 11,
+ "Platform does not support DSI\n");
+}
+
+static bool port_in_use(struct drm_i915_private *i915, enum port port)
+{
+ struct intel_encoder *encoder;
+
+ for_each_intel_encoder(&i915->drm, encoder) {
+ /* FIXME what about second port for dual link DSI? */
+ if (encoder->port == port)
+ return true;
+ }
+
+ return false;
+}
+
+void intel_ddi_init(struct drm_i915_private *dev_priv,
+ const struct intel_bios_encoder_data *devdata,
+ enum port port)
{
struct intel_digital_port *dig_port;
struct intel_encoder *encoder;
- const struct intel_bios_encoder_data *devdata;
bool init_hdmi, init_dp;
enum phy phy = intel_port_to_phy(dev_priv, port);
@@ -4701,6 +4723,21 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
if (!assert_port_valid(dev_priv, port))
return;
+ if (port_in_use(dev_priv, port)) {
+ drm_dbg_kms(&dev_priv->drm,
+ "Port %c already claimed\n", port_name(port));
+ return;
+ }
+
+ if (intel_bios_encoder_supports_dsi(devdata)) {
+ /* BXT/GLK handled elsewhere, for now at least */
+ if (!assert_has_icl_dsi(dev_priv))
+ return;
+
+ icl_dsi_init(dev_priv, devdata, port);
+ return;
+ }
+
/*
* On platforms with HTI (aka HDPORT), if it's enabled at boot it may
* have taken over some of the PHYs and made them unavailable to the
@@ -4713,14 +4750,6 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
return;
}
- devdata = intel_bios_encoder_data_lookup(dev_priv, port);
- if (!devdata) {
- drm_dbg_kms(&dev_priv->drm,
- "VBT says port %c is not present\n",
- port_name(port));
- return;
- }
-
init_hdmi = intel_bios_encoder_supports_dvi(devdata) ||
intel_bios_encoder_supports_hdmi(devdata);
init_dp = intel_bios_encoder_supports_dp(devdata);
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.h b/drivers/gpu/drm/i915/display/intel_ddi.h
index 2bc034042a93..10d586b0a9c0 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.h
+++ b/drivers/gpu/drm/i915/display/intel_ddi.h
@@ -11,6 +11,7 @@
struct drm_connector_state;
struct drm_i915_private;
struct intel_atomic_state;
+struct intel_bios_encoder_data;
struct intel_connector;
struct intel_crtc;
struct intel_crtc_state;
@@ -50,7 +51,9 @@ void hsw_prepare_dp_ddi_buffers(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state);
void intel_wait_ddi_buf_idle(struct drm_i915_private *dev_priv,
enum port port);
-void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port);
+void intel_ddi_init(struct drm_i915_private *dev_priv,
+ const struct intel_bios_encoder_data *devdata,
+ enum port port);
bool intel_ddi_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe);
void intel_ddi_enable_transcoder_func(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state);
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 43d6ba980780..836d3a1c797a 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -53,7 +53,6 @@
#include "i915_utils.h"
#include "i9xx_plane.h"
#include "i9xx_wm.h"
-#include "icl_dsi.h"
#include "intel_atomic.h"
#include "intel_atomic_plane.h"
#include "intel_audio.h"
@@ -7409,18 +7408,10 @@ void intel_setup_outputs(struct drm_i915_private *dev_priv)
return;
if (HAS_DDI(dev_priv)) {
- enum port port;
-
if (intel_ddi_crt_present(dev_priv))
intel_crt_init(dev_priv);
- for_each_port_masked(port, DISPLAY_RUNTIME_INFO(dev_priv)->port_mask)
- intel_ddi_init(dev_priv, port);
-
- /* FIXME do something about DSI */
- if (IS_ALDERLAKE_P(dev_priv) || IS_TIGERLAKE(dev_priv) ||
- DISPLAY_VER(dev_priv) == 11)
- icl_dsi_init(dev_priv);
+ intel_bios_for_each_encoder(dev_priv, intel_ddi_init);
if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
vlv_dsi_init(dev_priv);
diff --git a/drivers/gpu/drm/i915/display/intel_display_core.h b/drivers/gpu/drm/i915/display/intel_display_core.h
index 8d2243c71dd8..56c596ca7cbf 100644
--- a/drivers/gpu/drm/i915/display/intel_display_core.h
+++ b/drivers/gpu/drm/i915/display/intel_display_core.h
@@ -33,7 +33,6 @@ struct i915_audio_component;
struct i915_hdcp_arbiter;
struct intel_atomic_state;
struct intel_audio_funcs;
-struct intel_bios_encoder_data;
struct intel_cdclk_funcs;
struct intel_cdclk_vals;
struct intel_color_funcs;
@@ -218,7 +217,6 @@ struct intel_vbt_data {
struct list_head display_devices;
struct list_head bdb_blocks;
- struct intel_bios_encoder_data *ports[I915_MAX_PORTS]; /* Non-NULL if port present. */
struct sdvo_device_mapping {
u8 initialized;
u8 dvo_port;
--
2.39.3
