1// SPDX-License-Identifier: MIT
  2/*
  3 * Copyright © 2018 Intel Corporation
  4 */
  5
  6#include <drm/drm_mipi_dsi.h>
  7
  8#include "i915_drv.h"
  9#include "intel_dsi.h"
 10#include "intel_panel.h"
 11
 12int intel_dsi_bitrate(const struct intel_dsi *intel_dsi)
 13{
 14	int bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
 15
 16	if (WARN_ON(bpp < 0))
 17		bpp = 16;
 18
 19	return intel_dsi->pclk * bpp / intel_dsi->lane_count;
 20}
 21
 22int intel_dsi_tlpx_ns(const struct intel_dsi *intel_dsi)
 23{
 24	switch (intel_dsi->escape_clk_div) {
 25	default:
 26	case 0:
 27		return 50;
 28	case 1:
 29		return 100;
 30	case 2:
 31		return 200;
 32	}
 33}
 34
 35int intel_dsi_get_modes(struct drm_connector *connector)
 36{
 37	return intel_panel_get_modes(to_intel_connector(connector));
 38}
 39
 40enum drm_mode_status intel_dsi_mode_valid(struct drm_connector *connector,
 41					  struct drm_display_mode *mode)
 42{
 43	struct drm_i915_private *dev_priv = to_i915(connector->dev);
 44	struct intel_connector *intel_connector = to_intel_connector(connector);
 45	const struct drm_display_mode *fixed_mode =
 46		intel_panel_fixed_mode(intel_connector, mode);
 47	int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
 48	enum drm_mode_status status;
 49
 50	drm_dbg_kms(&dev_priv->drm, "\n");
 51
 52	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
 53		return MODE_NO_DBLESCAN;
 54
 55	status = intel_panel_mode_valid(intel_connector, mode);
 56	if (status != MODE_OK)
 57		return status;
 58
 59	if (fixed_mode->clock > max_dotclk)
 60		return MODE_CLOCK_HIGH;
 61
 62	return intel_mode_valid_max_plane_size(dev_priv, mode, false);
 63}
 64
 65struct intel_dsi_host *intel_dsi_host_init(struct intel_dsi *intel_dsi,
 66					   const struct mipi_dsi_host_ops *funcs,
 67					   enum port port)
 68{
 69	struct intel_dsi_host *host;
 70	struct mipi_dsi_device *device;
 71
 72	host = kzalloc(sizeof(*host), GFP_KERNEL);
 73	if (!host)
 74		return NULL;
 75
 76	host->base.ops = funcs;
 77	host->intel_dsi = intel_dsi;
 78	host->port = port;
 79
 80	/*
 81	 * We should call mipi_dsi_host_register(&host->base) here, but we don't
 82	 * have a host->dev, and we don't have OF stuff either. So just use the
 83	 * dsi framework as a library and hope for the best. Create the dsi
 84	 * devices by ourselves here too. Need to be careful though, because we
 85	 * don't initialize any of the driver model devices here.
 86	 */
 87	device = kzalloc(sizeof(*device), GFP_KERNEL);
 88	if (!device) {
 89		kfree(host);
 90		return NULL;
 91	}
 92
 93	device->host = &host->base;
 94	host->device = device;
 95
 96	return host;
 97}
 98
 99enum drm_panel_orientation
100intel_dsi_get_panel_orientation(struct intel_connector *connector)
101{
102	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
103	enum drm_panel_orientation orientation;
104
105	orientation = connector->panel.vbt.dsi.orientation;
106	if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
107		return orientation;
108
109	orientation = dev_priv->display.vbt.orientation;
110	if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
111		return orientation;
112
113	return DRM_MODE_PANEL_ORIENTATION_NORMAL;
114}