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 void intel_dsi_wait_panel_power_cycle(struct intel_dsi *intel_dsi) 13 { 14 ktime_t panel_power_on_time; 15 s64 panel_power_off_duration; 16 17 panel_power_on_time = ktime_get_boottime(); 18 panel_power_off_duration = ktime_ms_delta(panel_power_on_time, 19 intel_dsi->panel_power_off_time); 20 21 if (panel_power_off_duration < (s64)intel_dsi->panel_pwr_cycle_delay) 22 msleep(intel_dsi->panel_pwr_cycle_delay - panel_power_off_duration); 23 } 24 25 int intel_dsi_bitrate(const struct intel_dsi *intel_dsi) 26 { 27 int bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format); 28 29 if (WARN_ON(bpp < 0)) 30 bpp = 16; 31 32 return intel_dsi->pclk * bpp / intel_dsi->lane_count; 33 } 34 35 int intel_dsi_tlpx_ns(const struct intel_dsi *intel_dsi) 36 { 37 switch (intel_dsi->escape_clk_div) { 38 default: 39 case 0: 40 return 50; 41 case 1: 42 return 100; 43 case 2: 44 return 200; 45 } 46 } 47 48 int intel_dsi_get_modes(struct drm_connector *connector) 49 { 50 return intel_panel_get_modes(to_intel_connector(connector)); 51 } 52 53 enum drm_mode_status intel_dsi_mode_valid(struct drm_connector *connector, 54 struct drm_display_mode *mode) 55 { 56 struct drm_i915_private *dev_priv = to_i915(connector->dev); 57 struct intel_connector *intel_connector = to_intel_connector(connector); 58 const struct drm_display_mode *fixed_mode = 59 intel_panel_fixed_mode(intel_connector, mode); 60 int max_dotclk = to_i915(connector->dev)->max_dotclk_freq; 61 enum drm_mode_status status; 62 63 drm_dbg_kms(&dev_priv->drm, "\n"); 64 65 if (mode->flags & DRM_MODE_FLAG_DBLSCAN) 66 return MODE_NO_DBLESCAN; 67 68 status = intel_panel_mode_valid(intel_connector, mode); 69 if (status != MODE_OK) 70 return status; 71 72 if (fixed_mode->clock > max_dotclk) 73 return MODE_CLOCK_HIGH; 74 75 return intel_mode_valid_max_plane_size(dev_priv, mode, false); 76 } 77 78 struct intel_dsi_host *intel_dsi_host_init(struct intel_dsi *intel_dsi, 79 const struct mipi_dsi_host_ops *funcs, 80 enum port port) 81 { 82 struct intel_dsi_host *host; 83 struct mipi_dsi_device *device; 84 85 host = kzalloc(sizeof(*host), GFP_KERNEL); 86 if (!host) 87 return NULL; 88 89 host->base.ops = funcs; 90 host->intel_dsi = intel_dsi; 91 host->port = port; 92 93 /* 94 * We should call mipi_dsi_host_register(&host->base) here, but we don't 95 * have a host->dev, and we don't have OF stuff either. So just use the 96 * dsi framework as a library and hope for the best. Create the dsi 97 * devices by ourselves here too. Need to be careful though, because we 98 * don't initialize any of the driver model devices here. 99 */ 100 device = kzalloc(sizeof(*device), GFP_KERNEL); 101 if (!device) { 102 kfree(host); 103 return NULL; 104 } 105 106 device->host = &host->base; 107 host->device = device; 108 109 return host; 110 } 111 112 enum drm_panel_orientation 113 intel_dsi_get_panel_orientation(struct intel_connector *connector) 114 { 115 struct drm_i915_private *dev_priv = to_i915(connector->base.dev); 116 enum drm_panel_orientation orientation; 117 118 orientation = connector->panel.vbt.dsi.orientation; 119 if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN) 120 return orientation; 121 122 orientation = dev_priv->display.vbt.orientation; 123 if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN) 124 return orientation; 125 126 return DRM_MODE_PANEL_ORIENTATION_NORMAL; 127 } 128