| /* Copyright (c) 2017, The Linux Foundation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <linux/debugfs.h> |
| #include <linux/videodev2.h> |
| #include <linux/slab.h> |
| #include <linux/uaccess.h> |
| #include <media/cam_sync.h> |
| #include <media/cam_defs.h> |
| #include "cam_sync_api.h" |
| #include "cam_node.h" |
| #include "cam_context.h" |
| #include "cam_context_utils.h" |
| #include "cam_icp_context.h" |
| #include "cam_req_mgr_util.h" |
| #include "cam_mem_mgr.h" |
| #include "cam_trace.h" |
| #include "cam_debug_util.h" |
| |
| static int __cam_icp_acquire_dev_in_available(struct cam_context *ctx, |
| struct cam_acquire_dev_cmd *cmd) |
| { |
| int rc; |
| |
| rc = cam_context_acquire_dev_to_hw(ctx, cmd); |
| if (!rc) { |
| ctx->state = CAM_CTX_ACQUIRED; |
| trace_cam_context_state("ICP", ctx); |
| } |
| |
| return rc; |
| } |
| |
| static int __cam_icp_release_dev_in_acquired(struct cam_context *ctx, |
| struct cam_release_dev_cmd *cmd) |
| { |
| int rc; |
| |
| rc = cam_context_release_dev_to_hw(ctx, cmd); |
| if (rc) |
| CAM_ERR(CAM_ICP, "Unable to release device"); |
| |
| ctx->state = CAM_CTX_AVAILABLE; |
| trace_cam_context_state("ICP", ctx); |
| return rc; |
| } |
| |
| static int __cam_icp_start_dev_in_acquired(struct cam_context *ctx, |
| struct cam_start_stop_dev_cmd *cmd) |
| { |
| int rc; |
| |
| rc = cam_context_start_dev_to_hw(ctx, cmd); |
| if (!rc) { |
| ctx->state = CAM_CTX_READY; |
| trace_cam_context_state("ICP", ctx); |
| } |
| |
| return rc; |
| } |
| |
| static int __cam_icp_config_dev_in_ready(struct cam_context *ctx, |
| struct cam_config_dev_cmd *cmd) |
| { |
| int rc; |
| |
| rc = cam_context_prepare_dev_to_hw(ctx, cmd); |
| if (rc) |
| CAM_ERR(CAM_ICP, "Failed to prepare device"); |
| |
| return rc; |
| } |
| |
| static int __cam_icp_stop_dev_in_ready(struct cam_context *ctx, |
| struct cam_start_stop_dev_cmd *cmd) |
| { |
| int rc; |
| |
| rc = cam_context_stop_dev_to_hw(ctx); |
| if (rc) |
| CAM_ERR(CAM_ICP, "Failed to stop device"); |
| |
| ctx->state = CAM_CTX_ACQUIRED; |
| trace_cam_context_state("ICP", ctx); |
| return rc; |
| } |
| |
| static int __cam_icp_release_dev_in_ready(struct cam_context *ctx, |
| struct cam_release_dev_cmd *cmd) |
| { |
| int rc; |
| |
| rc = __cam_icp_stop_dev_in_ready(ctx, NULL); |
| if (rc) |
| CAM_ERR(CAM_ICP, "Failed to stop device"); |
| |
| rc = __cam_icp_release_dev_in_acquired(ctx, cmd); |
| if (rc) |
| CAM_ERR(CAM_ICP, "Failed to release device"); |
| |
| return rc; |
| } |
| |
| static int __cam_icp_handle_buf_done_in_ready(void *ctx, |
| uint32_t evt_id, void *done) |
| { |
| return cam_context_buf_done_from_hw(ctx, done, evt_id); |
| } |
| |
| static struct cam_ctx_ops |
| cam_icp_ctx_state_machine[CAM_CTX_STATE_MAX] = { |
| /* Uninit */ |
| { |
| .ioctl_ops = {}, |
| .crm_ops = {}, |
| .irq_ops = NULL, |
| }, |
| /* Available */ |
| { |
| .ioctl_ops = { |
| .acquire_dev = __cam_icp_acquire_dev_in_available, |
| }, |
| .crm_ops = {}, |
| .irq_ops = NULL, |
| }, |
| /* Acquired */ |
| { |
| .ioctl_ops = { |
| .release_dev = __cam_icp_release_dev_in_acquired, |
| .start_dev = __cam_icp_start_dev_in_acquired, |
| .config_dev = __cam_icp_config_dev_in_ready, |
| }, |
| .crm_ops = {}, |
| .irq_ops = __cam_icp_handle_buf_done_in_ready, |
| }, |
| /* Ready */ |
| { |
| .ioctl_ops = { |
| .stop_dev = __cam_icp_stop_dev_in_ready, |
| .release_dev = __cam_icp_release_dev_in_ready, |
| .config_dev = __cam_icp_config_dev_in_ready, |
| }, |
| .crm_ops = {}, |
| .irq_ops = __cam_icp_handle_buf_done_in_ready, |
| }, |
| /* Activated */ |
| { |
| .ioctl_ops = {}, |
| .crm_ops = {}, |
| .irq_ops = NULL, |
| }, |
| }; |
| |
| int cam_icp_context_init(struct cam_icp_context *ctx, |
| struct cam_hw_mgr_intf *hw_intf) |
| { |
| int rc; |
| |
| if ((!ctx) || (!ctx->base) || (!hw_intf)) { |
| CAM_ERR(CAM_ICP, "Invalid params: %pK %pK", ctx, hw_intf); |
| rc = -EINVAL; |
| goto err; |
| } |
| |
| rc = cam_context_init(ctx->base, NULL, hw_intf, ctx->req_base, |
| CAM_CTX_REQ_MAX); |
| if (rc) { |
| CAM_ERR(CAM_ICP, "Camera Context Base init failed"); |
| goto err; |
| } |
| |
| ctx->base->state_machine = cam_icp_ctx_state_machine; |
| ctx->base->ctx_priv = ctx; |
| ctx->ctxt_to_hw_map = NULL; |
| |
| err: |
| return rc; |
| } |
| |
| int cam_icp_context_deinit(struct cam_icp_context *ctx) |
| { |
| if ((!ctx) || (!ctx->base)) { |
| CAM_ERR(CAM_ICP, "Invalid params: %pK", ctx); |
| return -EINVAL; |
| } |
| |
| cam_context_deinit(ctx->base); |
| memset(ctx, 0, sizeof(*ctx)); |
| |
| return 0; |
| } |
| |