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// SPDX-License-Identifier: MIT
/*
* Copyright © 2018 Intel Corporation
*/
#include <drm/drm_mipi_dsi.h>
#include "i915_drv.h"
#include "intel_dsi.h"
#include "intel_panel.h"
void intel_dsi_wait_panel_power_cycle(struct intel_dsi *intel_dsi)
{
ktime_t panel_power_on_time;
s64 panel_power_off_duration;
panel_power_on_time = ktime_get_boottime();
panel_power_off_duration = ktime_ms_delta(panel_power_on_time,
intel_dsi->panel_power_off_time);
if (panel_power_off_duration < (s64)intel_dsi->panel_pwr_cycle_delay)
msleep(intel_dsi->panel_pwr_cycle_delay - panel_power_off_duration);
}
void intel_dsi_shutdown(struct intel_encoder *encoder)
{
struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
intel_dsi_wait_panel_power_cycle(intel_dsi);
}
int intel_dsi_bitrate(const struct intel_dsi *intel_dsi)
{
int bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
if (WARN_ON(bpp < 0))
bpp = 16;
return intel_dsi->pclk * bpp / intel_dsi->lane_count;
}
int intel_dsi_tlpx_ns(const struct intel_dsi *intel_dsi)
{
switch (intel_dsi->escape_clk_div) {
default:
case 0:
return 50;
case 1:
return 100;
case 2:
return 200;
}
}
int intel_dsi_get_modes(struct drm_connector *connector)
{
return intel_panel_get_modes(to_intel_connector(connector));
}
enum drm_mode_status intel_dsi_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
struct drm_i915_private *dev_priv = to_i915(connector->dev);
struct intel_connector *intel_connector = to_intel_connector(connector);
const struct drm_display_mode *fixed_mode =
intel_panel_fixed_mode(intel_connector, mode);
int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
enum drm_mode_status status;
drm_dbg_kms(&dev_priv->drm, "\n");
if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
return MODE_NO_DBLESCAN;
status = intel_panel_mode_valid(intel_connector, mode);
if (status != MODE_OK)
return status;
if (fixed_mode->clock > max_dotclk)
return MODE_CLOCK_HIGH;
return intel_mode_valid_max_plane_size(dev_priv, mode, false);
}
struct intel_dsi_host *intel_dsi_host_init(struct intel_dsi *intel_dsi,
const struct mipi_dsi_host_ops *funcs,
enum port port)
{
struct intel_dsi_host *host;
struct mipi_dsi_device *device;
host = kzalloc(sizeof(*host), GFP_KERNEL);
if (!host)
return NULL;
host->base.ops = funcs;
host->intel_dsi = intel_dsi;
host->port = port;
/*
* We should call mipi_dsi_host_register(&host->base) here, but we don't
* have a host->dev, and we don't have OF stuff either. So just use the
* dsi framework as a library and hope for the best. Create the dsi
* devices by ourselves here too. Need to be careful though, because we
* don't initialize any of the driver model devices here.
*/
device = kzalloc(sizeof(*device), GFP_KERNEL);
if (!device) {
kfree(host);
return NULL;
}
device->host = &host->base;
host->device = device;
return host;
}
enum drm_panel_orientation
intel_dsi_get_panel_orientation(struct intel_connector *connector)
{
struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
enum drm_panel_orientation orientation;
orientation = connector->panel.vbt.dsi.orientation;
if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
return orientation;
orientation = dev_priv->display.vbt.orientation;
if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
return orientation;
return DRM_MODE_PANEL_ORIENTATION_NORMAL;
}
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