> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces at lists.freedesktop.org> On Behalf Of Matt
> Atwood
> Sent: Wednesday, 16 October 2024 2.11
> To: intel-xe at lists.freedesktop.org; intel-gfx at lists.freedesktop.org
> Cc: Kandpal, Suraj <suraj.kandpal at intel.com>; Atwood, Matthew S
> <matthew.s.atwood at intel.com>
> Subject: [PATCH v3 6/7] drm/i915/xe3lpd: Add check to see if edp over type c is
> allowed
>
> From: Suraj Kandpal <suraj.kandpal at intel.com>
>
> Read PICA register to see if edp over type C is possible and then add the
> appropriate tables for it.
>
> --v2
> -remove bool from intel_encoder have it in runtime_info [Jani] -initialize the bool
> in runtime_info init [Jani] -dont abbreviate the bool [Jani]
>
> Bspec: 68846
Reviewed-by: Mika Kahola <mika.kahola at intel.com>
> Signed-off-by: Suraj Kandpal <suraj.kandpal at intel.com>
> Signed-off-by: Matt Atwood <matthew.s.atwood at intel.com>
> ---
> drivers/gpu/drm/i915/display/intel_cx0_phy.c | 4 ++++
> .../gpu/drm/i915/display/intel_display_device.c | 4 ++++
> .../gpu/drm/i915/display/intel_display_device.h | 1 +
> drivers/gpu/drm/i915/display/intel_dp.c | 17 ++++++++++++++---
> drivers/gpu/drm/i915/display/intel_dp.h | 5 +++++
> drivers/gpu/drm/i915/i915_reg.h | 3 +++
> 6 files changed, 31 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.c
> b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
> index f878ef1a97ec..37c66b32325d 100644
> --- a/drivers/gpu/drm/i915/display/intel_cx0_phy.c
> +++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
> @@ -2256,9 +2256,13 @@ intel_c20_pll_tables_get(struct intel_crtc_state
> *crtc_state,
> struct intel_encoder *encoder)
> {
> struct drm_i915_private *i915 = to_i915(encoder->base.dev);
> + struct intel_display_runtime_info *display_runtime =
> +DISPLAY_RUNTIME_INFO(i915);
>
> if (intel_crtc_has_dp_encoder(crtc_state)) {
> if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP)) {
> + if (DISPLAY_VER(i915) >= 30 &&
> + display_runtime->edp_typec_support)
> + return xe3lpd_c20_dp_edp_tables;
> if (DISPLAY_VER_FULL(i915) == IP_VER(14, 1))
> return xe2hpd_c20_edp_tables;
> }
> diff --git a/drivers/gpu/drm/i915/display/intel_display_device.c
> b/drivers/gpu/drm/i915/display/intel_display_device.c
> index aa22189e3853..8583c3529060 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_device.c
> +++ b/drivers/gpu/drm/i915/display/intel_display_device.c
> @@ -15,6 +15,7 @@
> #include "intel_display_params.h"
> #include "intel_display_power.h"
> #include "intel_display_reg_defs.h"
> +#include "intel_dp.h"
> #include "intel_fbc.h"
> #include "intel_step.h"
>
> @@ -1685,6 +1686,9 @@ static void
> __intel_display_device_info_runtime_init(struct drm_i915_private *i9
> }
> }
>
> + if (DISPLAY_VER(i915) >= 30)
> + intel_dp_check_edp_typec_support(display, display_runtime);
> +
> display_runtime->rawclk_freq = intel_read_rawclk(display);
> drm_dbg_kms(&i915->drm, "rawclk rate: %d kHz\n", display_runtime-
> >rawclk_freq);
>
> diff --git a/drivers/gpu/drm/i915/display/intel_display_device.h
> b/drivers/gpu/drm/i915/display/intel_display_device.h
> index 071a36b51f79..410f8b33a8a1 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_device.h
> +++ b/drivers/gpu/drm/i915/display/intel_display_device.h
> @@ -232,6 +232,7 @@ struct intel_display_runtime_info {
> bool has_hdcp;
> bool has_dmc;
> bool has_dsc;
> + bool edp_typec_support;
> };
>
> struct intel_display_device_info {
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c
> b/drivers/gpu/drm/i915/display/intel_dp.c
> index 6b27fabd61c3..378725766124 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -5571,6 +5571,16 @@ intel_dp_detect_sdp_caps(struct intel_dp *intel_dp)
> drm_dp_as_sdp_supported(&intel_dp->aux, intel_dp->dpcd); }
>
> +void
> +intel_dp_check_edp_typec_support(struct intel_display *display,
> + struct intel_display_runtime_info
> *display_runtime) {
> + u32 ret = 0;
> +
> + ret = intel_de_read(display, PICA_PHY_CONFIG_CONTROL);
> + display_runtime->edp_typec_support = ret & EDP_ON_TYPEC; }
> +
> static int
> intel_dp_detect(struct drm_connector *connector,
> struct drm_modeset_acquire_ctx *ctx,
> @@ -6439,10 +6449,11 @@ intel_dp_init_connector(struct intel_digital_port
> *dig_port,
>
> if (_intel_dp_is_port_edp(dev_priv, intel_encoder->devdata, port)) {
> /*
> - * Currently we don't support eDP on TypeC ports, although in
> - * theory it could work on TypeC legacy ports.
> + * Currently we don't support eDP on TypeC ports for
> DISPLAY_VER < 30,
> + * although in theory it could work on TypeC legacy ports.
> */
> - drm_WARN_ON(dev, intel_encoder_is_tc(intel_encoder));
> + if (DISPLAY_VER(dev_priv) < 30)
> + drm_WARN_ON(dev,
> intel_encoder_is_tc(intel_encoder));
> type = DRM_MODE_CONNECTOR_eDP;
> intel_encoder->type = INTEL_OUTPUT_EDP;
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.h
> b/drivers/gpu/drm/i915/display/intel_dp.h
> index 60baf4072dc9..c6a80c4e2166 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.h
> +++ b/drivers/gpu/drm/i915/display/intel_dp.h
> @@ -20,6 +20,8 @@ struct intel_atomic_state; struct intel_connector; struct
> intel_crtc_state; struct intel_digital_port;
> +struct intel_display;
> +struct intel_display_runtime_info;
> struct intel_dp;
> struct intel_encoder;
>
> @@ -204,5 +206,8 @@ bool intel_dp_link_params_valid(struct intel_dp
> *intel_dp, int link_rate,
> u8 lane_count);
> bool intel_dp_has_connector(struct intel_dp *intel_dp,
> const struct drm_connector_state *conn_state);
> +void
> +intel_dp_check_edp_typec_support(struct intel_display *display,
> + struct intel_display_runtime_info
> *display_runtime);
>
> #endif /* __INTEL_DP_H__ */
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index fc30e0056b07..535383a0e484 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -4584,4 +4584,7 @@ enum skl_power_gate {
>
> #define MTL_MEDIA_GSI_BASE 0x380000
>
> +#define PICA_PHY_CONFIG_CONTROL _MMIO(0x16FE68)
> +#define EDP_ON_TYPEC REG_BIT(31)
> +
> #endif /* _I915_REG_H_ */
> --
> 2.45.0