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 const struct drm_display_mode *fixed_mode = 67 intel_panel_fixed_mode(intel_connector, mode); 68 int max_dotclk = display->cdclk.max_dotclk_freq; 69 enum drm_mode_status status; 70 71 drm_dbg_kms(display->drm, "\n"); 72 73 status = intel_panel_mode_valid(intel_connector, mode); 74 if (status != MODE_OK) 75 return status; 76 77 if (fixed_mode->clock > max_dotclk) 78 return MODE_CLOCK_HIGH; 79 80 return intel_mode_valid_max_plane_size(display, mode, 1); 81 } 82 83 struct intel_dsi_host *intel_dsi_host_init(struct intel_dsi *intel_dsi, 84 const struct mipi_dsi_host_ops *funcs, 85 enum port port) 86 { 87 struct intel_dsi_host *host; 88 struct mipi_dsi_device *device; 89 90 host = kzalloc(sizeof(*host), GFP_KERNEL); 91 if (!host) 92 return NULL; 93 94 host->base.ops = funcs; 95 host->intel_dsi = intel_dsi; 96 host->port = port; 97 98 /* 99 * We should call mipi_dsi_host_register(&host->base) here, but we don't 100 * have a host->dev, and we don't have OF stuff either. So just use the 101 * dsi framework as a library and hope for the best. Create the dsi 102 * devices by ourselves here too. Need to be careful though, because we 103 * don't initialize any of the driver model devices here. 104 */ 105 device = kzalloc(sizeof(*device), GFP_KERNEL); 106 if (!device) { 107 kfree(host); 108 return NULL; 109 } 110 111 device->host = &host->base; 112 host->device = device; 113 114 return host; 115 } 116 117 enum drm_panel_orientation 118 intel_dsi_get_panel_orientation(struct intel_connector *connector) 119 { 120 struct intel_display *display = to_intel_display(connector); 121 enum drm_panel_orientation orientation; 122 123 orientation = connector->panel.vbt.dsi.orientation; 124 if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN) 125 return orientation; 126 127 orientation = display->vbt.orientation; 128 if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN) 129 return orientation; 130 131 return DRM_MODE_PANEL_ORIENTATION_NORMAL; 132 } 133