On Mon, 2016-01-11 at 21:54 +0200, Jani Nikula wrote:
> Hide knowledge about VBT child devices in intel_bios.c.
>
Tested-by: Mika Kahola <mika.kahola@xxxxxxxxx>
> Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_drv.h | 2 +-
> drivers/gpu/drm/i915/intel_bios.c | 33 ++++++++++++++++++++++++++++++++-
> drivers/gpu/drm/i915/intel_dsi.c | 23 ++++++++++++++---------
> 3 files changed, 47 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index 6ae828f984de..f8516f564d0a 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -1474,7 +1474,6 @@ struct intel_vbt_data {
>
> /* MIPI DSI */
> struct {
> - u16 port;
> u16 panel_id;
> struct mipi_config *config;
> struct mipi_pps_data *pps;
> @@ -3350,6 +3349,7 @@ bool intel_bios_is_valid_vbt(const void *buf, size_t size);
> bool intel_bios_is_tv_present(struct drm_i915_private *dev_priv);
> bool intel_bios_is_lvds_present(struct drm_i915_private *dev_priv, u8 *i2c_pin);
> bool intel_bios_is_port_edp(struct drm_i915_private *dev_priv, enum port port);
> +bool intel_bios_is_dsi_present(struct drm_i915_private *dev_priv, enum port *port);
>
> /* intel_opregion.c */
> #ifdef CONFIG_ACPI
> diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
> index a7491a450cc8..94c2baa50db7 100644
> --- a/drivers/gpu/drm/i915/intel_bios.c
> +++ b/drivers/gpu/drm/i915/intel_bios.c
> @@ -1221,7 +1221,6 @@ parse_device_mapping(struct drm_i915_private *dev_priv,
> &&p_child->common.device_type & DEVICE_TYPE_MIPI_OUTPUT) {
> DRM_DEBUG_KMS("Found MIPI as LFP\n");
> dev_priv->vbt.has_mipi = 1;
> - dev_priv->vbt.dsi.port = p_child->common.dvo_port;
> }
>
> child_dev_ptr = dev_priv->vbt.child_dev + count;
> @@ -1536,3 +1535,35 @@ bool intel_bios_is_port_edp(struct drm_i915_private *dev_priv, enum port port)
>
> return false;
> }
> +
> +/**
> + * intel_bios_is_dsi_present - is DSI present in VBT
> + * @dev_priv: i915 device instance
> + * @port: port for DSI if present
> + *
> + * Return true if DSI is present, and return the port in %port.
> + */
> +bool intel_bios_is_dsi_present(struct drm_i915_private *dev_priv,
> + enum port *port)
> +{
> + union child_device_config *p_child;
> + int i;
> +
> + for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
> + p_child = dev_priv->vbt.child_dev + i;
> +
> + if (!(p_child->common.device_type & DEVICE_TYPE_MIPI_OUTPUT))
> + continue;
> +
> + switch (p_child->common.dvo_port) {
> + case DVO_PORT_MIPIA:
> + case DVO_PORT_MIPIB:
> + case DVO_PORT_MIPIC:
> + case DVO_PORT_MIPID:
> + *port = p_child->common.dvo_port - DVO_PORT_MIPIA;
> + return true;
> + }
> + }
> +
> + return false;
> +}
> diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
> index 91cef3525c93..33f219cfba43 100644
> --- a/drivers/gpu/drm/i915/intel_dsi.c
> +++ b/drivers/gpu/drm/i915/intel_dsi.c
> @@ -1112,9 +1112,15 @@ void intel_dsi_init(struct drm_device *dev)
> DRM_DEBUG_KMS("\n");
>
> /* There is no detection method for MIPI so rely on VBT */
> - if (!dev_priv->vbt.has_mipi)
> + if (!intel_bios_is_dsi_present(dev_priv, &port))
> return;
>
> + if (port != PORT_A && port != PORT_C) {
> + DRM_DEBUG_KMS("VBT has unsupported DSI port %c\n",
> + port_name(port));
> + return;
> + }
> +
> if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
> dev_priv->mipi_mmio_base = VLV_MIPI_BASE;
> } else {
> @@ -1153,16 +1159,15 @@ void intel_dsi_init(struct drm_device *dev)
> intel_connector->unregister = intel_connector_unregister;
>
> /* Pipe A maps to MIPI DSI port A, pipe B maps to MIPI DSI port C */
> - if (dev_priv->vbt.dsi.port == DVO_PORT_MIPIA) {
> - intel_encoder->crtc_mask = (1 << PIPE_A);
> - intel_dsi->ports = (1 << PORT_A);
> - } else if (dev_priv->vbt.dsi.port == DVO_PORT_MIPIC) {
> - intel_encoder->crtc_mask = (1 << PIPE_B);
> - intel_dsi->ports = (1 << PORT_C);
> - }
> + if (port == PORT_A)
> + intel_encoder->crtc_mask = 1 << PIPE_A;
> + else
> + intel_encoder->crtc_mask = 1 << PIPE_B;
>
> if (dev_priv->vbt.dsi.config->dual_link)
> - intel_dsi->ports = ((1 << PORT_A) | (1 << PORT_C));
> + intel_dsi->ports = (1 << PORT_A) | (1 << PORT_C);
> + else
> + intel_dsi->ports = 1 << port;
>
> /* Create a DSI host (and a device) for each port. */
> for_each_dsi_port(port, intel_dsi->ports) {
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