115 lines
2.8 KiB
C
115 lines
2.8 KiB
C
// SPDX-License-Identifier: MIT
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/*
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* Copyright © 2018 Intel Corporation
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*/
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#include <drm/drm_mipi_dsi.h>
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#include "i915_drv.h"
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#include "intel_dsi.h"
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#include "intel_panel.h"
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int intel_dsi_bitrate(const struct intel_dsi *intel_dsi)
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{
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int bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
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if (WARN_ON(bpp < 0))
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bpp = 16;
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return intel_dsi->pclk * bpp / intel_dsi->lane_count;
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}
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int intel_dsi_tlpx_ns(const struct intel_dsi *intel_dsi)
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{
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switch (intel_dsi->escape_clk_div) {
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default:
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case 0:
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return 50;
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case 1:
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return 100;
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case 2:
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return 200;
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}
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}
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int intel_dsi_get_modes(struct drm_connector *connector)
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{
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return intel_panel_get_modes(to_intel_connector(connector));
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}
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enum drm_mode_status intel_dsi_mode_valid(struct drm_connector *connector,
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struct drm_display_mode *mode)
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{
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struct drm_i915_private *dev_priv = to_i915(connector->dev);
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struct intel_connector *intel_connector = to_intel_connector(connector);
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const struct drm_display_mode *fixed_mode =
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intel_panel_fixed_mode(intel_connector, mode);
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int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
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enum drm_mode_status status;
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drm_dbg_kms(&dev_priv->drm, "\n");
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if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
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return MODE_NO_DBLESCAN;
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status = intel_panel_mode_valid(intel_connector, mode);
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if (status != MODE_OK)
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return status;
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if (fixed_mode->clock > max_dotclk)
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return MODE_CLOCK_HIGH;
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return intel_mode_valid_max_plane_size(dev_priv, mode, false);
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}
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struct intel_dsi_host *intel_dsi_host_init(struct intel_dsi *intel_dsi,
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const struct mipi_dsi_host_ops *funcs,
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enum port port)
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{
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struct intel_dsi_host *host;
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struct mipi_dsi_device *device;
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host = kzalloc(sizeof(*host), GFP_KERNEL);
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if (!host)
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return NULL;
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host->base.ops = funcs;
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host->intel_dsi = intel_dsi;
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host->port = port;
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/*
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* We should call mipi_dsi_host_register(&host->base) here, but we don't
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* have a host->dev, and we don't have OF stuff either. So just use the
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* dsi framework as a library and hope for the best. Create the dsi
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* devices by ourselves here too. Need to be careful though, because we
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* don't initialize any of the driver model devices here.
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*/
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device = kzalloc(sizeof(*device), GFP_KERNEL);
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if (!device) {
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kfree(host);
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return NULL;
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}
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device->host = &host->base;
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host->device = device;
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return host;
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}
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enum drm_panel_orientation
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intel_dsi_get_panel_orientation(struct intel_connector *connector)
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{
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struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
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enum drm_panel_orientation orientation;
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orientation = connector->panel.vbt.dsi.orientation;
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if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
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return orientation;
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orientation = dev_priv->display.vbt.orientation;
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if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
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return orientation;
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return DRM_MODE_PANEL_ORIENTATION_NORMAL;
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}
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