[Intel-gfx] [PATCH v3] drm/i915/bios: calculate panel type as per child device index in VBT
Jani Nikula
jani.nikula at intel.com
Fri Jun 17 12:32:10 UTC 2022
On Fri, 17 Jun 2022, Animesh Manna <animesh.manna at intel.com> wrote:
> Each LFP may have different panel type which is stored in LFP data
> data block. Based on the child device index respective panel-type/
> panel-type2 field will be used.
>
> v1: Initial rfc verion.
> v2: Based on review comments from Jani,
> - Used panel-type instead addition panel-index variable.
> - DEVICE_HANDLE_* name changed and placed before DEVICE_TYPE_*
> macro.
> v3:
> - Passing intel_bios_encoder_data as argument of
> intel_bios_init_panel(). Passing NULL to indicate encoder is not
> initialized yet for dsi as current focus is to enable dual EDP. [Jani]
>
> Signed-off-by: Animesh Manna <animesh.manna at intel.com>
> ---
> drivers/gpu/drm/i915/display/icl_dsi.c | 2 +-
> drivers/gpu/drm/i915/display/intel_bios.c | 16 ++++++++++++++--
> drivers/gpu/drm/i915/display/intel_bios.h | 1 +
> drivers/gpu/drm/i915/display/intel_dp.c | 4 +++-
> drivers/gpu/drm/i915/display/intel_lvds.c | 2 +-
> drivers/gpu/drm/i915/display/intel_sdvo.c | 2 +-
> drivers/gpu/drm/i915/display/intel_vbt_defs.h | 4 ++++
> drivers/gpu/drm/i915/display/vlv_dsi.c | 2 +-
> 8 files changed, 26 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c
> index 3b5305c219ba..5dcfa7feffa9 100644
> --- a/drivers/gpu/drm/i915/display/icl_dsi.c
> +++ b/drivers/gpu/drm/i915/display/icl_dsi.c
> @@ -2050,7 +2050,7 @@ 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(dev_priv, &intel_connector->panel, NULL);
> + intel_bios_init_panel(dev_priv, &intel_connector->panel, NULL, NULL);
>
> mutex_lock(&dev->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 76e86358adb9..e97f1f979a48 100644
> --- a/drivers/gpu/drm/i915/display/intel_bios.c
> +++ b/drivers/gpu/drm/i915/display/intel_bios.c
> @@ -604,12 +604,14 @@ get_lfp_data_tail(const struct bdb_lvds_lfp_data *data,
> }
>
> static int opregion_get_panel_type(struct drm_i915_private *i915,
> + const struct intel_bios_encoder_data *devdata,
> const struct edid *edid)
> {
> return intel_opregion_get_panel_type(i915);
> }
>
> static int vbt_get_panel_type(struct drm_i915_private *i915,
> + const struct intel_bios_encoder_data *devdata,
> const struct edid *edid)
> {
> const struct bdb_lvds_options *lvds_options;
> @@ -625,10 +627,16 @@ static int vbt_get_panel_type(struct drm_i915_private *i915,
> return -1;
> }
>
> + if (devdata && devdata->child.handle == DEVICE_HANDLE_LFP2)
> + return lvds_options->panel_type2;
> +
> + drm_WARN_ON(&i915->drm, devdata && devdata->child.handle != DEVICE_HANDLE_LFP1);
> +
> return lvds_options->panel_type;
> }
>
> static int pnpid_get_panel_type(struct drm_i915_private *i915,
> + const struct intel_bios_encoder_data *devdata,
> const struct edid *edid)
> {
> const struct bdb_lvds_lfp_data *data;
> @@ -675,6 +683,7 @@ static int pnpid_get_panel_type(struct drm_i915_private *i915,
> }
>
> static int fallback_get_panel_type(struct drm_i915_private *i915,
> + const struct intel_bios_encoder_data *devdata,
> const struct edid *edid)
> {
> return 0;
> @@ -688,11 +697,13 @@ enum panel_type {
> };
>
> static int get_panel_type(struct drm_i915_private *i915,
> + const struct intel_bios_encoder_data *devdata,
> const struct edid *edid)
> {
> struct {
> const char *name;
> int (*get_panel_type)(struct drm_i915_private *i915,
> + const struct intel_bios_encoder_data *devdata,
> const struct edid *edid);
> int panel_type;
> } panel_types[] = {
> @@ -716,7 +727,7 @@ static int get_panel_type(struct drm_i915_private *i915,
> int i;
>
> for (i = 0; i < ARRAY_SIZE(panel_types); i++) {
> - panel_types[i].panel_type = panel_types[i].get_panel_type(i915, edid);
> + panel_types[i].panel_type = panel_types[i].get_panel_type(i915, devdata, edid);
>
> drm_WARN_ON(&i915->drm, panel_types[i].panel_type > 0xf &&
> panel_types[i].panel_type != 0xff);
> @@ -3127,11 +3138,12 @@ void intel_bios_init(struct drm_i915_private *i915)
>
> void intel_bios_init_panel(struct drm_i915_private *i915,
> struct intel_panel *panel,
> + const struct intel_bios_encoder_data *devdata,
> const struct edid *edid)
> {
> init_vbt_panel_defaults(panel);
>
> - panel->vbt.panel_type = get_panel_type(i915, edid);
> + panel->vbt.panel_type = get_panel_type(i915, devdata, edid);
>
> parse_panel_options(i915, panel);
> parse_generic_dtd(i915, panel);
> diff --git a/drivers/gpu/drm/i915/display/intel_bios.h b/drivers/gpu/drm/i915/display/intel_bios.h
> index b112200ae0a0..e47582b0de0a 100644
> --- a/drivers/gpu/drm/i915/display/intel_bios.h
> +++ b/drivers/gpu/drm/i915/display/intel_bios.h
> @@ -234,6 +234,7 @@ struct mipi_pps_data {
> void intel_bios_init(struct drm_i915_private *dev_priv);
> void intel_bios_init_panel(struct drm_i915_private *dev_priv,
> struct intel_panel *panel,
> + const struct intel_bios_encoder_data *devdata,
> const struct edid *edid);
> void intel_bios_fini_panel(struct intel_panel *panel);
> void intel_bios_driver_remove(struct drm_i915_private *dev_priv);
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index 2fac76bcf06d..3590de9227d5 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -5171,6 +5171,7 @@ static bool intel_edp_init_connector(struct intel_dp *intel_dp,
> bool has_dpcd;
> enum pipe pipe = INVALID_PIPE;
> struct edid *edid;
> + struct intel_bios_encoder_data *devdata;
>
> if (!intel_dp_is_edp(intel_dp))
> return true;
> @@ -5224,7 +5225,8 @@ static bool intel_edp_init_connector(struct intel_dp *intel_dp,
> }
> intel_connector->edid = edid;
>
> - intel_bios_init_panel(dev_priv, &intel_connector->panel,
> + devdata = dev_priv->vbt.ports[intel_connector->encoder->port];
Sorry, i915->vbt.ports[] is supposed to be private to intel_bios.c. I
tried to explain that we already look up devdata for some of the
encoders. See intel_ddi_init() which is relevant for new platforms.
We've got
devdata = intel_bios_encoder_data_lookup(dev_priv, port);
and
encoder->devdata = devdata;
So you just need to get at the encoder here (via intel_dp), and pass
encoder->devdata.
With that fixed, this LGTM.
BR,
Jani.
> + intel_bios_init_panel(dev_priv, &intel_connector->panel, devdata,
> IS_ERR(edid) ? NULL : edid);
>
> intel_panel_add_edid_fixed_modes(intel_connector,
> diff --git a/drivers/gpu/drm/i915/display/intel_lvds.c b/drivers/gpu/drm/i915/display/intel_lvds.c
> index e55802b45461..730480ac3300 100644
> --- a/drivers/gpu/drm/i915/display/intel_lvds.c
> +++ b/drivers/gpu/drm/i915/display/intel_lvds.c
> @@ -967,7 +967,7 @@ void intel_lvds_init(struct drm_i915_private *dev_priv)
> }
> intel_connector->edid = edid;
>
> - intel_bios_init_panel(dev_priv, &intel_connector->panel,
> + intel_bios_init_panel(dev_priv, &intel_connector->panel, NULL,
> IS_ERR(edid) ? NULL : edid);
>
> /* Try EDID first */
> diff --git a/drivers/gpu/drm/i915/display/intel_sdvo.c b/drivers/gpu/drm/i915/display/intel_sdvo.c
> index 2b78a790e1b6..19122bc6d2ab 100644
> --- a/drivers/gpu/drm/i915/display/intel_sdvo.c
> +++ b/drivers/gpu/drm/i915/display/intel_sdvo.c
> @@ -2901,7 +2901,7 @@ intel_sdvo_lvds_init(struct intel_sdvo *intel_sdvo, int device)
> if (!intel_sdvo_create_enhance_property(intel_sdvo, intel_sdvo_connector))
> goto err;
>
> - intel_bios_init_panel(i915, &intel_connector->panel, NULL);
> + intel_bios_init_panel(i915, &intel_connector->panel, NULL, NULL);
>
> /*
> * Fetch modes from VBT. For SDVO prefer the VBT mode since some
> diff --git a/drivers/gpu/drm/i915/display/intel_vbt_defs.h b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
> index 3766c09bd65d..509b0a419c20 100644
> --- a/drivers/gpu/drm/i915/display/intel_vbt_defs.h
> +++ b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
> @@ -182,6 +182,10 @@ struct bdb_general_features {
> #define GPIO_PIN_ADD_DDC 0x04 /* "ADDCARD DDC GPIO pins" */
> #define GPIO_PIN_ADD_DDC_I2C 0x06 /* "ADDCARD DDC/I2C GPIO pins" */
>
> +/* Device handle */
> +#define DEVICE_HANDLE_LFP1 0x0008
> +#define DEVICE_HANDLE_LFP2 0x0080
> +
> /* Pre 915 */
> #define DEVICE_TYPE_NONE 0x00
> #define DEVICE_TYPE_CRT 0x01
> diff --git a/drivers/gpu/drm/i915/display/vlv_dsi.c b/drivers/gpu/drm/i915/display/vlv_dsi.c
> index abda0888c8d4..b9b1fed99874 100644
> --- a/drivers/gpu/drm/i915/display/vlv_dsi.c
> +++ b/drivers/gpu/drm/i915/display/vlv_dsi.c
> @@ -1926,7 +1926,7 @@ void vlv_dsi_init(struct drm_i915_private *dev_priv)
>
> intel_dsi->panel_power_off_time = ktime_get_boottime();
>
> - intel_bios_init_panel(dev_priv, &intel_connector->panel, NULL);
> + intel_bios_init_panel(dev_priv, &intel_connector->panel, NULL, NULL);
>
> if (intel_connector->panel.vbt.dsi.config->dual_link)
> intel_dsi->ports = BIT(PORT_A) | BIT(PORT_C);
--
Jani Nikula, Intel Open Source Graphics Center
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