| /* 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/of.h> |
| #include <linux/debugfs.h> |
| #include <linux/videodev2.h> |
| #include <linux/uaccess.h> |
| #include <linux/platform_device.h> |
| #include <linux/firmware.h> |
| #include <linux/delay.h> |
| #include <linux/timer.h> |
| |
| #include "cam_io_util.h" |
| #include "cam_hw.h" |
| #include "cam_hw_intf.h" |
| #include "jpeg_dma_core.h" |
| #include "jpeg_dma_soc.h" |
| #include "cam_soc_util.h" |
| #include "cam_io_util.h" |
| #include "cam_jpeg_hw_intf.h" |
| #include "cam_jpeg_hw_mgr_intf.h" |
| #include "cam_cpas_api.h" |
| #include "cam_debug_util.h" |
| |
| int cam_jpeg_dma_init_hw(void *device_priv, |
| void *init_hw_args, uint32_t arg_size) |
| { |
| struct cam_hw_info *jpeg_dma_dev = device_priv; |
| struct cam_hw_soc_info *soc_info = NULL; |
| struct cam_jpeg_dma_device_core_info *core_info = NULL; |
| struct cam_ahb_vote ahb_vote; |
| struct cam_axi_vote axi_vote; |
| int rc; |
| |
| if (!device_priv) { |
| CAM_ERR(CAM_JPEG, "Invalid cam_dev_info"); |
| return -EINVAL; |
| } |
| |
| soc_info = &jpeg_dma_dev->soc_info; |
| core_info = |
| (struct cam_jpeg_dma_device_core_info *)jpeg_dma_dev-> |
| core_info; |
| |
| if (!soc_info || !core_info) { |
| CAM_ERR(CAM_JPEG, "soc_info = %pK core_info = %pK", |
| soc_info, core_info); |
| return -EINVAL; |
| } |
| |
| mutex_lock(&core_info->core_mutex); |
| if (++core_info->ref_count > 1) { |
| mutex_unlock(&core_info->core_mutex); |
| return 0; |
| } |
| |
| ahb_vote.type = CAM_VOTE_ABSOLUTE; |
| ahb_vote.vote.level = CAM_SVS_VOTE; |
| axi_vote.compressed_bw = JPEG_VOTE; |
| axi_vote.uncompressed_bw = JPEG_VOTE; |
| |
| rc = cam_cpas_start(core_info->cpas_handle, |
| &ahb_vote, &axi_vote); |
| if (rc) { |
| CAM_ERR(CAM_JPEG, "cpass start failed: %d", rc); |
| goto cpas_failed; |
| } |
| |
| rc = cam_jpeg_dma_enable_soc_resources(soc_info); |
| if (rc) { |
| CAM_ERR(CAM_JPEG, "soc enable is failed %d", rc); |
| goto soc_failed; |
| } |
| |
| mutex_unlock(&core_info->core_mutex); |
| |
| return 0; |
| |
| soc_failed: |
| cam_cpas_stop(core_info->cpas_handle); |
| cpas_failed: |
| --core_info->ref_count; |
| mutex_unlock(&core_info->core_mutex); |
| |
| return rc; |
| } |
| |
| int cam_jpeg_dma_deinit_hw(void *device_priv, |
| void *init_hw_args, uint32_t arg_size) |
| { |
| struct cam_hw_info *jpeg_dma_dev = device_priv; |
| struct cam_hw_soc_info *soc_info = NULL; |
| struct cam_jpeg_dma_device_core_info *core_info = NULL; |
| int rc; |
| |
| if (!device_priv) { |
| CAM_ERR(CAM_JPEG, "Invalid cam_dev_info"); |
| return -EINVAL; |
| } |
| |
| soc_info = &jpeg_dma_dev->soc_info; |
| core_info = (struct cam_jpeg_dma_device_core_info *) |
| jpeg_dma_dev->core_info; |
| if (!soc_info || !core_info) { |
| CAM_ERR(CAM_JPEG, "soc_info = %pK core_info = %pK", |
| soc_info, core_info); |
| return -EINVAL; |
| } |
| |
| mutex_lock(&core_info->core_mutex); |
| if (--core_info->ref_count > 0) { |
| mutex_unlock(&core_info->core_mutex); |
| return 0; |
| } |
| |
| if (core_info->ref_count < 0) { |
| CAM_ERR(CAM_JPEG, "ref cnt %d", core_info->ref_count); |
| core_info->ref_count = 0; |
| mutex_unlock(&core_info->core_mutex); |
| return -EFAULT; |
| } |
| |
| rc = cam_jpeg_dma_disable_soc_resources(soc_info); |
| if (rc) |
| CAM_ERR(CAM_JPEG, "soc enable failed %d", rc); |
| |
| rc = cam_cpas_stop(core_info->cpas_handle); |
| if (rc) |
| CAM_ERR(CAM_JPEG, "cpas stop failed: %d", rc); |
| |
| mutex_unlock(&core_info->core_mutex); |
| |
| return 0; |
| } |
| |
| int cam_jpeg_dma_process_cmd(void *device_priv, uint32_t cmd_type, |
| void *cmd_args, uint32_t arg_size) |
| { |
| struct cam_hw_info *jpeg_dma_dev = device_priv; |
| struct cam_jpeg_dma_device_core_info *core_info = NULL; |
| int rc; |
| |
| if (!device_priv) { |
| CAM_ERR(CAM_JPEG, "Invalid arguments"); |
| return -EINVAL; |
| } |
| |
| if (cmd_type >= CAM_JPEG_CMD_MAX) { |
| CAM_ERR(CAM_JPEG, "Invalid command : %x", cmd_type); |
| return -EINVAL; |
| } |
| |
| core_info = |
| (struct cam_jpeg_dma_device_core_info *)jpeg_dma_dev-> |
| core_info; |
| |
| switch (cmd_type) { |
| case CAM_JPEG_CMD_SET_IRQ_CB: |
| { |
| struct cam_jpeg_set_irq_cb *irq_cb = cmd_args; |
| |
| if (!cmd_args) { |
| CAM_ERR(CAM_JPEG, "cmd args NULL"); |
| return -EINVAL; |
| } |
| if (irq_cb->b_set_cb) { |
| core_info->irq_cb.jpeg_hw_mgr_cb = |
| irq_cb->jpeg_hw_mgr_cb; |
| core_info->irq_cb.data = irq_cb->data; |
| } else { |
| core_info->irq_cb.jpeg_hw_mgr_cb = NULL; |
| core_info->irq_cb.data = NULL; |
| } |
| rc = 0; |
| break; |
| } |
| default: |
| rc = -EINVAL; |
| break; |
| } |
| |
| return rc; |
| } |
| |
| irqreturn_t cam_jpeg_dma_irq(int irq_num, void *data) |
| { |
| return IRQ_HANDLED; |
| } |
| |