| // 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 <assert.h> |
| #include <stdint.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include <ddk/device.h> |
| #include <ddk/driver.h> |
| #include <ddk/binding.h> |
| #include <ddk/io-buffer.h> |
| #include <ddk/protocol/display.h> |
| #include <ddk/protocol/platform-defs.h> |
| #include <ddk/protocol/platform-device.h> |
| |
| #include <zircon/syscalls.h> |
| #include <zircon/assert.h> |
| |
| typedef struct { |
| zx_display_info_t disp_info; |
| pdev_vmo_buffer_t buffer; |
| } bcm_display_t; |
| |
| static zx_status_t vc_set_mode(void* ctx, zx_display_info_t* info) { |
| return ZX_OK; |
| } |
| |
| static zx_status_t vc_get_mode(void* ctx, zx_display_info_t* info) { |
| bcm_display_t* display = ctx; |
| memcpy(info, &display->disp_info, sizeof(zx_display_info_t)); |
| return ZX_OK; |
| } |
| |
| static zx_status_t vc_get_framebuffer(void* ctx, void** framebuffer) { |
| if (!framebuffer) return ZX_ERR_INVALID_ARGS; |
| bcm_display_t* display = ctx; |
| *framebuffer = display->buffer.vaddr; |
| return ZX_OK; |
| } |
| |
| static void vc_flush_framebuffer(void* ctx) { |
| bcm_display_t* display = ctx; |
| pdev_vmo_buffer_cache_flush(&display->buffer, 0, display->buffer.size); |
| } |
| |
| static display_protocol_ops_t vc_display_proto = { |
| .set_mode = vc_set_mode, |
| .get_mode = vc_get_mode, |
| .get_framebuffer = vc_get_framebuffer, |
| .flush = vc_flush_framebuffer |
| }; |
| |
| static zx_protocol_device_t empty_device_proto = { |
| .version = DEVICE_OPS_VERSION, |
| }; |
| |
| zx_status_t bcm_display_bind(void* ctx, zx_device_t* parent) { |
| bcm_display_t* display = calloc(1, sizeof(bcm_display_t)); |
| if (!display) { |
| return ZX_ERR_NO_MEMORY; |
| } |
| |
| platform_device_protocol_t pdev; |
| zx_status_t status = device_get_protocol(parent, ZX_PROTOCOL_PLATFORM_DEV, &pdev); |
| if (status != ZX_OK) { |
| free(display); |
| return status; |
| } |
| |
| status = pdev_map_mmio_buffer(&pdev, 0, ZX_CACHE_POLICY_CACHED, &display->buffer); |
| if (status != ZX_OK) { |
| return status; |
| } |
| |
| display->disp_info.format = ZX_PIXEL_FORMAT_RGB_565; |
| display->disp_info.width = 1920; |
| display->disp_info.height = 1080; |
| display->disp_info.stride = 1920; |
| |
| zx_set_framebuffer(get_root_resource(), display->buffer.vaddr, |
| display->buffer.size, display->disp_info.format, |
| display->disp_info.width, display->disp_info.height, |
| display->disp_info.stride); |
| |
| device_add_args_t vc_fbuff_args = { |
| .version = DEVICE_ADD_ARGS_VERSION, |
| .name = "vim-display", |
| .ctx = display, |
| .ops = &empty_device_proto, |
| .proto_id = ZX_PROTOCOL_DISPLAY, |
| .proto_ops = &vc_display_proto, |
| }; |
| |
| status = device_add(parent, &vc_fbuff_args, NULL); |
| if (status != ZX_OK) { |
| free(display); |
| } |
| return status; |
| } |
| |
| static zx_driver_ops_t bcm_display_driver_ops = { |
| .version = DRIVER_OPS_VERSION, |
| .bind = bcm_display_bind, |
| }; |
| |
| ZIRCON_DRIVER_BEGIN(bcm_display, bcm_display_driver_ops, "zircon", "0.1", 4) |
| BI_ABORT_IF(NE, BIND_PROTOCOL, ZX_PROTOCOL_PLATFORM_DEV), |
| BI_ABORT_IF(NE, BIND_PLATFORM_DEV_VID, PDEV_VID_KHADAS), |
| BI_MATCH_IF(EQ, BIND_PLATFORM_DEV_PID, PDEV_PID_VIM), |
| BI_MATCH_IF(EQ, BIND_PLATFORM_DEV_DID, PDEV_PID_VIM_DISPLAY), |
| ZIRCON_DRIVER_END(bcm_display) |