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 12 int 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 22 int 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 35 int intel_dsi_get_modes(struct drm_connector *connector) 36 { 37 return intel_panel_get_modes(to_intel_connector(connector)); 38 } 39 40 enum 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 65 struct 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 99 enum drm_panel_orientation 100 intel_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 = dev_priv->vbt.dsi.orientation; 106 if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN) 107 return orientation; 108 109 orientation = dev_priv->vbt.orientation; 110 if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN) 111 return orientation; 112 113 return DRM_MODE_PANEL_ORIENTATION_NORMAL; 114 } 115