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1// SPDX-License-Identifier: MIT2/*3 * Copyright © 2018 Intel Corporation4 */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 12void 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 25void intel_dsi_shutdown(struct intel_encoder *encoder)26{27 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);28 29 intel_dsi_wait_panel_power_cycle(intel_dsi);30}31 32int intel_dsi_bitrate(const struct intel_dsi *intel_dsi)33{34 int bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);35 36 if (WARN_ON(bpp < 0))37 bpp = 16;38 39 return intel_dsi->pclk * bpp / intel_dsi->lane_count;40}41 42int intel_dsi_tlpx_ns(const struct intel_dsi *intel_dsi)43{44 switch (intel_dsi->escape_clk_div) {45 default:46 case 0:47 return 50;48 case 1:49 return 100;50 case 2:51 return 200;52 }53}54 55int intel_dsi_get_modes(struct drm_connector *connector)56{57 return intel_panel_get_modes(to_intel_connector(connector));58}59 60enum drm_mode_status intel_dsi_mode_valid(struct drm_connector *connector,61 struct drm_display_mode *mode)62{63 struct drm_i915_private *dev_priv = to_i915(connector->dev);64 struct intel_connector *intel_connector = to_intel_connector(connector);65 const struct drm_display_mode *fixed_mode =66 intel_panel_fixed_mode(intel_connector, mode);67 int max_dotclk = to_i915(connector->dev)->display.cdclk.max_dotclk_freq;68 enum drm_mode_status status;69 70 drm_dbg_kms(&dev_priv->drm, "\n");71 72 status = intel_panel_mode_valid(intel_connector, mode);73 if (status != MODE_OK)74 return status;75 76 if (fixed_mode->clock > max_dotclk)77 return MODE_CLOCK_HIGH;78 79 return intel_mode_valid_max_plane_size(dev_priv, mode, false);80}81 82struct 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(sizeof(*host), GFP_KERNEL);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't99 * have a host->dev, and we don't have OF stuff either. So just use the100 * dsi framework as a library and hope for the best. Create the dsi101 * devices by ourselves here too. Need to be careful though, because we102 * don't initialize any of the driver model devices here.103 */104 device = kzalloc(sizeof(*device), GFP_KERNEL);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 116enum drm_panel_orientation117intel_dsi_get_panel_orientation(struct intel_connector *connector)118{119 struct drm_i915_private *dev_priv = to_i915(connector->base.dev);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 = dev_priv->display.vbt.orientation;127 if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)128 return orientation;129 130 return DRM_MODE_PANEL_ORIENTATION_NORMAL;131}132