system/dev/display/intel-i915/bootloader-display.cpp

// Copyright 2017 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <ddk/debug.h>

#include "bootloader-display.h"

namespace i915 {

BootloaderDisplay::BootloaderDisplay(Controller* controller) : DisplayDevice(controller) {}

bool BootloaderDisplay::Init(zx_display_info_t* di) {
    uint32_t format, width, height, stride;
    zx_status_t status = zx_bootloader_fb_get_info(&format, &width, &height, &stride);
    if (status == ZX_OK) {
        di->format = format;
        di->width = width;
        di->height = height;
        di->stride = stride;
    } else {
        di->format = ZX_PIXEL_FORMAT_RGB_565;
        di->width = 2560 / 2;
        di->height = 1700 / 2;
        di->stride = 2560 / 2;
    }
    di->flags = ZX_DISPLAY_FLAG_HW_FRAMEBUFFER;

    switch (di->format) {
    case ZX_PIXEL_FORMAT_RGB_565:
        di->pixelsize = 2;
        break;
    case ZX_PIXEL_FORMAT_RGB_x888:
    case ZX_PIXEL_FORMAT_ARGB_8888:
        di->pixelsize = 4;
        break;
    case ZX_PIXEL_FORMAT_RGB_332:
    case ZX_PIXEL_FORMAT_RGB_2220:
    case ZX_PIXEL_FORMAT_MONO_1:
    case ZX_PIXEL_FORMAT_MONO_8:
        di->pixelsize = 1;
        break;
    default:
        zxlogf(ERROR, "i915: unknown format %u\n", di->format);
        return false;
    }

    return true;
}

} // namespace i915