1 // SPDX-License-Identifier: MIT 2 /* 3 * Copyright © 2018 Intel Corporation 4 */ 5 6 #include <drm/drm_mipi_dsi.h> 7 #include <drm/drm_print.h> 8 9 #include "intel_display_core.h" 10 #include "intel_dsi.h" 11 #include "intel_panel.h" 12 13 void intel_dsi_wait_panel_power_cycle(struct intel_dsi *intel_dsi) 14 { 15 ktime_t panel_power_on_time; 16 s64 panel_power_off_duration; 17 18 panel_power_on_time = ktime_get_boottime(); 19 panel_power_off_duration = ktime_ms_delta(panel_power_on_time, 20 intel_dsi->panel_power_off_time); 21 22 if (panel_power_off_duration < (s64)intel_dsi->panel_pwr_cycle_delay) 23 msleep(intel_dsi->panel_pwr_cycle_delay - panel_power_off_duration); 24 } 25 26 void intel_dsi_shutdown(struct intel_encoder *encoder) 27 { 28 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 29 30 intel_dsi_wait_panel_power_cycle(intel_dsi); 31 } 32 33 int intel_dsi_bitrate(const struct intel_dsi *intel_dsi) 34 { 35 int bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format); 36 37 if (WARN_ON(bpp < 0)) 38 bpp = 16; 39 40 return intel_dsi->pclk * bpp / intel_dsi->lane_count; 41 } 42 43 int intel_dsi_tlpx_ns(const struct intel_dsi *intel_dsi) 44 { 45 switch (intel_dsi->escape_clk_div) { 46 default: 47 case 0: 48 return 50; 49 case 1: 50 return 100; 51 case 2: 52 return 200; 53 } 54 } 55 56 int intel_dsi_get_modes(struct drm_connector *connector) 57 { 58 return intel_panel_get_modes(to_intel_connector(connector)); 59 } 60 61 enum drm_mode_status intel_dsi_mode_valid(struct drm_connector *connector, 62 const struct drm_display_mode *mode) 63 { 64 struct intel_display *display = to_intel_display(connector->dev); 65 struct intel_connector *intel_connector = to_intel_connector(connector); 66 int max_dotclk = display->cdclk.max_dotclk_freq; 67 enum drm_mode_status status; 68 int target_clock; 69 70 drm_dbg_kms(display->drm, "\n"); 71 72 status = intel_panel_mode_valid(intel_connector, mode, &target_clock); 73 if (status != MODE_OK) 74 return status; 75 76 if (target_clock > max_dotclk) 77 return MODE_CLOCK_HIGH; 78 79 return intel_mode_valid_max_plane_size(display, mode, 1); 80 } 81 82 struct intel_dsi_host *intel_dsi_host_init(struct intel_dsi *intel_dsi, 83 const struct mipi_dsi_host_ops *funcs, 84 enum port port) 85 { 86 struct intel_dsi_host *host; 87 struct mipi_dsi_device *device; 88 89 host = kzalloc_obj(*host); 90 if (!host) 91 return NULL; 92 93 host->base.ops = funcs; 94 host->intel_dsi = intel_dsi; 95 host->port = port; 96 97 /* 98 * We should call mipi_dsi_host_register(&host->base) here, but we don't 99 * have a host->dev, and we don't have OF stuff either. So just use the 100 * dsi framework as a library and hope for the best. Create the dsi 101 * devices by ourselves here too. Need to be careful though, because we 102 * don't initialize any of the driver model devices here. 103 */ 104 device = kzalloc_obj(*device); 105 if (!device) { 106 kfree(host); 107 return NULL; 108 } 109 110 device->host = &host->base; 111 host->device = device; 112 113 return host; 114 } 115 116 enum drm_panel_orientation 117 intel_dsi_get_panel_orientation(struct intel_connector *connector) 118 { 119 struct intel_display *display = to_intel_display(connector); 120 enum drm_panel_orientation orientation; 121 122 orientation = connector->panel.vbt.dsi.orientation; 123 if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN) 124 return orientation; 125 126 orientation = display->vbt.orientation; 127 if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN) 128 return orientation; 129 130 return DRM_MODE_PANEL_ORIENTATION_NORMAL; 131 } 132