1 // SPDX-License-Identifier: MIT 2 /* 3 * Copyright © 2018 Intel Corporation 4 */ 5 6 #include <drm/drm_mipi_dsi.h> 7 #include "intel_dsi.h" 8 9 int intel_dsi_bitrate(const struct intel_dsi *intel_dsi) 10 { 11 int bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format); 12 13 if (WARN_ON(bpp < 0)) 14 bpp = 16; 15 16 return intel_dsi->pclk * bpp / intel_dsi->lane_count; 17 } 18 19 int intel_dsi_tlpx_ns(const struct intel_dsi *intel_dsi) 20 { 21 switch (intel_dsi->escape_clk_div) { 22 default: 23 case 0: 24 return 50; 25 case 1: 26 return 100; 27 case 2: 28 return 200; 29 } 30 } 31 32 int intel_dsi_get_modes(struct drm_connector *connector) 33 { 34 struct intel_connector *intel_connector = to_intel_connector(connector); 35 struct drm_display_mode *mode; 36 37 DRM_DEBUG_KMS("\n"); 38 39 if (!intel_connector->panel.fixed_mode) { 40 DRM_DEBUG_KMS("no fixed mode\n"); 41 return 0; 42 } 43 44 mode = drm_mode_duplicate(connector->dev, 45 intel_connector->panel.fixed_mode); 46 if (!mode) { 47 DRM_DEBUG_KMS("drm_mode_duplicate failed\n"); 48 return 0; 49 } 50 51 drm_mode_probed_add(connector, mode); 52 return 1; 53 } 54 55 enum drm_mode_status intel_dsi_mode_valid(struct drm_connector *connector, 56 struct drm_display_mode *mode) 57 { 58 struct drm_i915_private *dev_priv = to_i915(connector->dev); 59 struct intel_connector *intel_connector = to_intel_connector(connector); 60 const struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode; 61 int max_dotclk = to_i915(connector->dev)->max_dotclk_freq; 62 63 DRM_DEBUG_KMS("\n"); 64 65 if (mode->flags & DRM_MODE_FLAG_DBLSCAN) 66 return MODE_NO_DBLESCAN; 67 68 if (fixed_mode) { 69 if (mode->hdisplay > fixed_mode->hdisplay) 70 return MODE_PANEL; 71 if (mode->vdisplay > fixed_mode->vdisplay) 72 return MODE_PANEL; 73 if (fixed_mode->clock > max_dotclk) 74 return MODE_CLOCK_HIGH; 75 } 76 77 return intel_mode_valid_max_plane_size(dev_priv, mode); 78 } 79 80 struct intel_dsi_host *intel_dsi_host_init(struct intel_dsi *intel_dsi, 81 const struct mipi_dsi_host_ops *funcs, 82 enum port port) 83 { 84 struct intel_dsi_host *host; 85 struct mipi_dsi_device *device; 86 87 host = kzalloc(sizeof(*host), GFP_KERNEL); 88 if (!host) 89 return NULL; 90 91 host->base.ops = funcs; 92 host->intel_dsi = intel_dsi; 93 host->port = port; 94 95 /* 96 * We should call mipi_dsi_host_register(&host->base) here, but we don't 97 * have a host->dev, and we don't have OF stuff either. So just use the 98 * dsi framework as a library and hope for the best. Create the dsi 99 * devices by ourselves here too. Need to be careful though, because we 100 * don't initialize any of the driver model devices here. 101 */ 102 device = kzalloc(sizeof(*device), GFP_KERNEL); 103 if (!device) { 104 kfree(host); 105 return NULL; 106 } 107 108 device->host = &host->base; 109 host->device = device; 110 111 return host; 112 } 113 114 enum drm_panel_orientation 115 intel_dsi_get_panel_orientation(struct intel_connector *connector) 116 { 117 struct drm_i915_private *dev_priv = to_i915(connector->base.dev); 118 enum drm_panel_orientation orientation; 119 120 orientation = dev_priv->vbt.dsi.orientation; 121 if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN) 122 return orientation; 123 124 orientation = dev_priv->vbt.orientation; 125 if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN) 126 return orientation; 127 128 return DRM_MODE_PANEL_ORIENTATION_NORMAL; 129 } 130