// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
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/*
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* Copyright (c) 2020 Rockchip Electronics Co., Ltd
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*
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* author:
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* Alpha Lin, alpha.lin@rock-chips.com
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* Ding Wei, leo.ding@rock-chips.com
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*
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*/
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#include <asm/cacheflush.h>
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#include <linux/clk.h>
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#include <linux/delay.h>
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#include <linux/iopoll.h>
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#include <linux/interrupt.h>
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/of_platform.h>
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#include <linux/slab.h>
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#include <linux/uaccess.h>
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#include <linux/regmap.h>
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#include <linux/proc_fs.h>
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#include <soc/rockchip/pm_domains.h>
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#include "mpp_debug.h"
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#include "mpp_common.h"
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#include "mpp_iommu.h"
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#define JPGDEC_DRIVER_NAME "mpp_jpgdec"
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#define JPGDEC_SESSION_MAX_BUFFERS 40
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/* The maximum registers number of all the version */
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#define JPGDEC_REG_NUM 42
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#define JPGDEC_REG_HW_ID_INDEX 0
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#define JPGDEC_REG_START_INDEX 0
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#define JPGDEC_REG_END_INDEX 41
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#define JPGDEC_GET_PROD_NUM(x) (((x) >> 16) & 0xffff)
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#define JPGDEC_GET_SUPPORT_BIT(x) (((x) >> 8) & 0x1)
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#define JPGDEC_REG_INT_EN_BASE 0x004
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#define JPGDEC_REG_INT_EN_INDEX (1)
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#define JPGDEC_CARE_STREAM_ERROR_EN BIT(16)
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#define JPGDEC_EMPTY_FORCE_END BIT(15)
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#define JPGDEC_SOFT_RSET_READY BIT(14)
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#define JPGDEC_BUF_EMPTY_STA BIT(13)
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#define JPGDEC_TIMEOUT_STA BIT(12)
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#define JPGDEC_ERROR_STA BIT(11)
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#define JPGDEC_BUS_STA BIT(10)
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#define JPGDEC_REDAY_STA BIT(9)
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#define JPGDEC_IRQ BIT(8)
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#define JPGDEC_WAIT_RESET_EN BIT(7)
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#define JPGDEC_IRQ_RAW BIT(6)
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#define JPGDEC_SOFT_REST_EN BIT(5)
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#define JPGDEC_BUF_EMPTY_RELOAD_EN BIT(4)
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#define JPGDEC_BUF_EMPTY_EN BIT(3)
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#define JPGDEC_TIMEOUT_EN BIT(2)
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#define JPGDEC_IRQ_DIS BIT(1)
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#define JPGDEC_START_EN BIT(0)
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#define JPGDEC_REG_SYS_BASE 0x008
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#define JPGDEC_FORCE_SOFTRESET_VALID BIT(17)
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#define JPGDEC_REG_PIC_INFO_BASE 0x00c
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#define JPGDEC_REG_PIC_INFO_INDEX (3)
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#define JPGDEC_GET_WIDTH(x) (((x) & 0xffff) + 1)
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#define JPGDEC_GET_HEIGHT(x) ((((x) >> 16) & 0xffff) + 1)
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#define JPGDEC_REG_STREAM_RLC_BASE 0x030
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#define JPGDEC_REG_STREAM_RLC_BASE_INDEX (12)
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#define to_jpgdec_task(task) \
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container_of(task, struct jpgdec_task, mpp_task)
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#define to_jpgdec_dev(dev) \
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container_of(dev, struct jpgdec_dev, mpp)
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struct jpgdec_task {
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struct mpp_task mpp_task;
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enum MPP_CLOCK_MODE clk_mode;
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u32 reg[JPGDEC_REG_NUM];
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struct reg_offset_info off_inf;
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u32 strm_addr;
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u32 irq_status;
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/* req for current task */
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u32 w_req_cnt;
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struct mpp_request w_reqs[MPP_MAX_MSG_NUM];
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u32 r_req_cnt;
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struct mpp_request r_reqs[MPP_MAX_MSG_NUM];
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};
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struct jpgdec_dev {
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struct mpp_dev mpp;
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struct mpp_clk_info aclk_info;
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struct mpp_clk_info hclk_info;
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#ifdef CONFIG_ROCKCHIP_MPP_PROC_FS
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struct proc_dir_entry *procfs;
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#endif
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struct reset_control *rst_a;
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struct reset_control *rst_h;
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};
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static struct mpp_hw_info jpgdec_v1_hw_info = {
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.reg_num = JPGDEC_REG_NUM,
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.reg_id = JPGDEC_REG_HW_ID_INDEX,
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.reg_start = JPGDEC_REG_START_INDEX,
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.reg_end = JPGDEC_REG_END_INDEX,
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.reg_en = JPGDEC_REG_INT_EN_INDEX,
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};
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/*
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* file handle translate information
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*/
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static const u16 trans_tbl_jpgdec[] = {
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9, 10, 11, 12, 13,
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};
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#define JPEGDEC_FMT_DEFAULT 0
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static struct mpp_trans_info jpgdec_v1_trans[] = {
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[JPEGDEC_FMT_DEFAULT] = {
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.count = ARRAY_SIZE(trans_tbl_jpgdec),
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.table = trans_tbl_jpgdec,
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},
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};
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static int jpgdec_process_reg_fd(struct mpp_session *session,
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struct jpgdec_task *task,
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struct mpp_task_msgs *msgs)
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{
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int ret = 0;
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ret = mpp_translate_reg_address(session, &task->mpp_task,
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JPEGDEC_FMT_DEFAULT, task->reg, &task->off_inf);
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if (ret)
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return ret;
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mpp_translate_reg_offset_info(&task->mpp_task,
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&task->off_inf, task->reg);
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return 0;
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}
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static int jpgdec_extract_task_msg(struct jpgdec_task *task,
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struct mpp_task_msgs *msgs)
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{
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u32 i;
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int ret;
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struct mpp_request *req;
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struct mpp_hw_info *hw_info = task->mpp_task.hw_info;
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for (i = 0; i < msgs->req_cnt; i++) {
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u32 off_s, off_e;
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req = &msgs->reqs[i];
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if (!req->size)
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continue;
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switch (req->cmd) {
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case MPP_CMD_SET_REG_WRITE: {
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off_s = hw_info->reg_start * sizeof(u32);
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off_e = hw_info->reg_end * sizeof(u32);
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ret = mpp_check_req(req, 0, sizeof(task->reg),
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off_s, off_e);
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if (ret)
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continue;
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if (copy_from_user((u8 *)task->reg + req->offset,
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req->data, req->size)) {
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mpp_err("copy_from_user reg failed\n");
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return -EIO;
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}
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memcpy(&task->w_reqs[task->w_req_cnt++],
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req, sizeof(*req));
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} break;
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case MPP_CMD_SET_REG_READ: {
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off_s = hw_info->reg_start * sizeof(u32);
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off_e = hw_info->reg_end * sizeof(u32);
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ret = mpp_check_req(req, 0, sizeof(task->reg),
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off_s, off_e);
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if (ret)
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continue;
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memcpy(&task->r_reqs[task->r_req_cnt++],
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req, sizeof(*req));
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} break;
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case MPP_CMD_SET_REG_ADDR_OFFSET: {
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mpp_extract_reg_offset_info(&task->off_inf, req);
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} break;
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default:
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break;
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}
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}
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mpp_debug(DEBUG_TASK_INFO, "w_req_cnt %d, r_req_cnt %d\n",
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task->w_req_cnt, task->r_req_cnt);
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return 0;
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}
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static void *jpgdec_alloc_task(struct mpp_session *session,
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struct mpp_task_msgs *msgs)
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{
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int ret;
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struct mpp_task *mpp_task = NULL;
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struct jpgdec_task *task = NULL;
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struct mpp_dev *mpp = session->mpp;
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mpp_debug_enter();
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task = kzalloc(sizeof(*task), GFP_KERNEL);
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if (!task)
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return NULL;
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mpp_task = &task->mpp_task;
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mpp_task_init(session, mpp_task);
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mpp_task->hw_info = mpp->var->hw_info;
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mpp_task->reg = task->reg;
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/* extract reqs for current task */
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ret = jpgdec_extract_task_msg(task, msgs);
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if (ret)
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goto fail;
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/* process fd in register */
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if (!(msgs->flags & MPP_FLAGS_REG_FD_NO_TRANS)) {
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ret = jpgdec_process_reg_fd(session, task, msgs);
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if (ret)
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goto fail;
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}
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task->strm_addr = task->reg[JPGDEC_REG_STREAM_RLC_BASE_INDEX];
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task->clk_mode = CLK_MODE_NORMAL;
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mpp_debug_leave();
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return mpp_task;
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fail:
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mpp_task_dump_mem_region(mpp, mpp_task);
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mpp_task_dump_reg(mpp, mpp_task);
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mpp_task_finalize(session, mpp_task);
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kfree(task);
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return NULL;
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}
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static int jpgdec_soft_reset(struct mpp_dev *mpp)
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{
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mpp_write(mpp, JPGDEC_REG_SYS_BASE, JPGDEC_FORCE_SOFTRESET_VALID);
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mpp_write(mpp, JPGDEC_REG_INT_EN_BASE, JPGDEC_SOFT_REST_EN);
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return 0;
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}
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static int jpgdec_run(struct mpp_dev *mpp,
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struct mpp_task *mpp_task)
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{
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u32 i;
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u32 reg_en;
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struct jpgdec_task *task = to_jpgdec_task(mpp_task);
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u32 timing_en = mpp->srv->timing_en;
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mpp_debug_enter();
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/* set registers for hardware */
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reg_en = mpp_task->hw_info->reg_en;
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for (i = 0; i < task->w_req_cnt; i++) {
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struct mpp_request *req = &task->w_reqs[i];
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int s = req->offset / sizeof(u32);
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int e = s + req->size / sizeof(u32);
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mpp_write_req(mpp, task->reg, s, e, reg_en);
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}
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/* flush tlb before starting hardware */
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mpp_iommu_flush_tlb(mpp->iommu_info);
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/* init current task */
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mpp->cur_task = mpp_task;
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mpp_task_run_begin(mpp_task, timing_en, MPP_WORK_TIMEOUT_DELAY);
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/* Flush the register before the start the device */
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wmb();
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mpp_write(mpp, JPGDEC_REG_INT_EN_BASE,
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task->reg[reg_en] | JPGDEC_START_EN);
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mpp_task_run_end(mpp_task, timing_en);
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mpp_debug_leave();
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return 0;
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}
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static int jpgdec_finish(struct mpp_dev *mpp,
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struct mpp_task *mpp_task)
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{
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u32 i;
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u32 s, e;
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u32 dec_get;
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s32 dec_length;
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struct mpp_request *req;
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struct jpgdec_task *task = to_jpgdec_task(mpp_task);
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mpp_debug_enter();
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/* read register after running */
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for (i = 0; i < task->r_req_cnt; i++) {
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req = &task->r_reqs[i];
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s = req->offset / sizeof(u32);
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e = s + req->size / sizeof(u32);
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mpp_read_req(mpp, task->reg, s, e);
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}
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/* revert hack for irq status */
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task->reg[JPGDEC_REG_INT_EN_INDEX] = task->irq_status;
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/* revert hack for decoded length */
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dec_get = mpp_read_relaxed(mpp, JPGDEC_REG_STREAM_RLC_BASE);
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dec_length = dec_get - task->strm_addr;
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task->reg[JPGDEC_REG_STREAM_RLC_BASE_INDEX] = dec_length << 10;
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/*
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* If the softrest_rdy bit is low,
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* it means that the soft-reset of the previous frame
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* has not been completed.We have to manually trigger to do soft-reset.
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*/
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if (!(task->irq_status & JPGDEC_SOFT_RSET_READY) &&
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!atomic_read(&mpp->reset_request))
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jpgdec_soft_reset(mpp);
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mpp_debug(DEBUG_REGISTER,
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"dec_get %08x dec_length %d\n", dec_get, dec_length);
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mpp_debug_leave();
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return 0;
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}
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static int jpgdec_result(struct mpp_dev *mpp,
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struct mpp_task *mpp_task,
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struct mpp_task_msgs *msgs)
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{
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u32 i;
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struct mpp_request *req;
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struct jpgdec_task *task = to_jpgdec_task(mpp_task);
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/* FIXME may overflow the kernel */
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for (i = 0; i < task->r_req_cnt; i++) {
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req = &task->r_reqs[i];
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if (copy_to_user(req->data,
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(u8 *)task->reg + req->offset,
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req->size)) {
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mpp_err("copy_to_user reg fail\n");
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return -EIO;
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}
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}
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return 0;
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}
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static int jpgdec_free_task(struct mpp_session *session,
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struct mpp_task *mpp_task)
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{
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struct jpgdec_task *task = to_jpgdec_task(mpp_task);
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mpp_task_finalize(session, mpp_task);
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kfree(task);
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return 0;
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}
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#ifdef CONFIG_ROCKCHIP_MPP_PROC_FS
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static int jpgdec_procfs_remove(struct mpp_dev *mpp)
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{
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struct jpgdec_dev *dec = to_jpgdec_dev(mpp);
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if (dec->procfs) {
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proc_remove(dec->procfs);
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dec->procfs = NULL;
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}
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return 0;
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}
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static int jpgdec_procfs_init(struct mpp_dev *mpp)
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{
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struct jpgdec_dev *dec = to_jpgdec_dev(mpp);
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dec->procfs = proc_mkdir(mpp->dev->of_node->name, mpp->srv->procfs);
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if (IS_ERR_OR_NULL(dec->procfs)) {
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mpp_err("failed on open procfs\n");
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dec->procfs = NULL;
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return -EIO;
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}
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/* for common mpp_dev options */
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mpp_procfs_create_common(dec->procfs, mpp);
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mpp_procfs_create_u32("aclk", 0644,
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dec->procfs, &dec->aclk_info.debug_rate_hz);
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mpp_procfs_create_u32("session_buffers", 0644,
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dec->procfs, &mpp->session_max_buffers);
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return 0;
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}
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#else
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static inline int jpgdec_procfs_remove(struct mpp_dev *mpp)
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{
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return 0;
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}
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static inline int jpgdec_procfs_init(struct mpp_dev *mpp)
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{
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return 0;
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}
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#endif
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static int jpgdec_init(struct mpp_dev *mpp)
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{
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int ret;
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struct jpgdec_dev *dec = to_jpgdec_dev(mpp);
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mpp->grf_info = &mpp->srv->grf_infos[MPP_DRIVER_VDPU1];
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/* Get clock info from dtsi */
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ret = mpp_get_clk_info(mpp, &dec->aclk_info, "aclk_vcodec");
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if (ret)
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mpp_err("failed on clk_get aclk_vcodec\n");
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ret = mpp_get_clk_info(mpp, &dec->hclk_info, "hclk_vcodec");
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if (ret)
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mpp_err("failed on clk_get hclk_vcodec\n");
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/* Set default rates */
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mpp_set_clk_info_rate_hz(&dec->aclk_info, CLK_MODE_DEFAULT, 300 * MHZ);
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/* Get reset control from dtsi */
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dec->rst_a = mpp_reset_control_get(mpp, RST_TYPE_A, "video_a");
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if (!dec->rst_a)
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mpp_err("No aclk reset resource define\n");
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dec->rst_h = mpp_reset_control_get(mpp, RST_TYPE_H, "video_h");
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if (!dec->rst_h)
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mpp_err("No hclk reset resource define\n");
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return 0;
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}
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static int jpgdec_clk_on(struct mpp_dev *mpp)
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{
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struct jpgdec_dev *dec = to_jpgdec_dev(mpp);
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mpp_clk_safe_enable(dec->aclk_info.clk);
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mpp_clk_safe_enable(dec->hclk_info.clk);
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return 0;
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}
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static int jpgdec_clk_off(struct mpp_dev *mpp)
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{
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struct jpgdec_dev *dec = to_jpgdec_dev(mpp);
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mpp_clk_safe_disable(dec->aclk_info.clk);
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mpp_clk_safe_disable(dec->hclk_info.clk);
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return 0;
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}
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static int jpgdec_set_freq(struct mpp_dev *mpp,
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struct mpp_task *mpp_task)
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{
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struct jpgdec_dev *dec = to_jpgdec_dev(mpp);
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struct jpgdec_task *task = to_jpgdec_task(mpp_task);
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mpp_clk_set_rate(&dec->aclk_info, task->clk_mode);
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return 0;
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}
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static int jpgdec_reduce_freq(struct mpp_dev *mpp)
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{
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struct jpgdec_dev *dec = to_jpgdec_dev(mpp);
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mpp_clk_set_rate(&dec->aclk_info, CLK_MODE_REDUCE);
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return 0;
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}
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static int jpgdec_irq(struct mpp_dev *mpp)
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{
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mpp->irq_status = mpp_read(mpp, JPGDEC_REG_INT_EN_BASE);
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if (!(mpp->irq_status & JPGDEC_IRQ_RAW))
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return IRQ_NONE;
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mpp_write(mpp, JPGDEC_REG_INT_EN_BASE, 0);
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return IRQ_WAKE_THREAD;
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}
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static int jpgdec_isr(struct mpp_dev *mpp)
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{
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int error_mask;
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struct jpgdec_task *task = NULL;
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struct mpp_task *mpp_task = mpp->cur_task;
|
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/* FIXME use a spin lock here */
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if (!mpp_task) {
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dev_err(mpp->dev, "no current task\n");
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return IRQ_HANDLED;
|
}
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mpp_time_diff(mpp_task);
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mpp->cur_task = NULL;
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task = to_jpgdec_task(mpp_task);
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task->irq_status = mpp->irq_status;
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mpp_debug(DEBUG_IRQ_STATUS, "irq_status: %08x\n",
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task->irq_status);
|
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error_mask = JPGDEC_BUS_STA | JPGDEC_ERROR_STA |
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JPGDEC_TIMEOUT_STA | JPGDEC_BUF_EMPTY_STA;
|
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if (error_mask & task->irq_status)
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atomic_inc(&mpp->reset_request);
|
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mpp_task_finish(mpp_task->session, mpp_task);
|
|
mpp_debug_leave();
|
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return IRQ_HANDLED;
|
}
|
|
static int jpgdec_reset(struct mpp_dev *mpp)
|
{
|
struct jpgdec_dev *dec = to_jpgdec_dev(mpp);
|
|
if (dec->rst_a && dec->rst_h) {
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mpp_debug(DEBUG_RESET, "reset in\n");
|
|
/* Don't skip this or iommu won't work after reset */
|
mpp_pmu_idle_request(mpp, true);
|
mpp_safe_reset(dec->rst_a);
|
mpp_safe_reset(dec->rst_h);
|
udelay(5);
|
mpp_safe_unreset(dec->rst_a);
|
mpp_safe_unreset(dec->rst_h);
|
mpp_pmu_idle_request(mpp, false);
|
|
mpp_debug(DEBUG_RESET, "reset out\n");
|
}
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mpp_write(mpp, JPGDEC_REG_INT_EN_BASE, 0);
|
|
return 0;
|
}
|
|
static struct mpp_hw_ops jpgdec_v1_hw_ops = {
|
.init = jpgdec_init,
|
.clk_on = jpgdec_clk_on,
|
.clk_off = jpgdec_clk_off,
|
.set_freq = jpgdec_set_freq,
|
.reduce_freq = jpgdec_reduce_freq,
|
.reset = jpgdec_reset,
|
};
|
|
static struct mpp_dev_ops jpgdec_v1_dev_ops = {
|
.alloc_task = jpgdec_alloc_task,
|
.run = jpgdec_run,
|
.irq = jpgdec_irq,
|
.isr = jpgdec_isr,
|
.finish = jpgdec_finish,
|
.result = jpgdec_result,
|
.free_task = jpgdec_free_task,
|
};
|
|
static const struct mpp_dev_var jpgdec_v1_data = {
|
.device_type = MPP_DEVICE_JPGDEC,
|
.hw_info = &jpgdec_v1_hw_info,
|
.trans_info = jpgdec_v1_trans,
|
.hw_ops = &jpgdec_v1_hw_ops,
|
.dev_ops = &jpgdec_v1_dev_ops,
|
};
|
|
static const struct of_device_id mpp_jpgdec_dt_match[] = {
|
{
|
.compatible = "rockchip,rkv-jpeg-decoder-v1",
|
.data = &jpgdec_v1_data,
|
},
|
{},
|
};
|
|
static int jpgdec_probe(struct platform_device *pdev)
|
{
|
struct device *dev = &pdev->dev;
|
struct jpgdec_dev *dec = NULL;
|
struct mpp_dev *mpp = NULL;
|
const struct of_device_id *match = NULL;
|
int ret = 0;
|
|
dev_info(dev, "probe device\n");
|
dec = devm_kzalloc(dev, sizeof(struct jpgdec_dev), GFP_KERNEL);
|
if (!dec)
|
return -ENOMEM;
|
platform_set_drvdata(pdev, dec);
|
|
mpp = &dec->mpp;
|
if (pdev->dev.of_node) {
|
match = of_match_node(mpp_jpgdec_dt_match, pdev->dev.of_node);
|
if (match)
|
mpp->var = (struct mpp_dev_var *)match->data;
|
}
|
|
ret = mpp_dev_probe(mpp, pdev);
|
if (ret) {
|
dev_err(dev, "probe sub driver failed\n");
|
return -EINVAL;
|
}
|
|
ret = devm_request_threaded_irq(dev, mpp->irq,
|
mpp_dev_irq,
|
mpp_dev_isr_sched,
|
IRQF_SHARED,
|
dev_name(dev), mpp);
|
if (ret) {
|
dev_err(dev, "register interrupter runtime failed\n");
|
return -EINVAL;
|
}
|
|
mpp->session_max_buffers = JPGDEC_SESSION_MAX_BUFFERS;
|
jpgdec_procfs_init(mpp);
|
/* register current device to mpp service */
|
mpp_dev_register_srv(mpp, mpp->srv);
|
dev_info(dev, "probing finish\n");
|
|
return 0;
|
}
|
|
static int jpgdec_remove(struct platform_device *pdev)
|
{
|
struct device *dev = &pdev->dev;
|
struct jpgdec_dev *dec = platform_get_drvdata(pdev);
|
|
dev_info(dev, "remove device\n");
|
mpp_dev_remove(&dec->mpp);
|
jpgdec_procfs_remove(&dec->mpp);
|
|
return 0;
|
}
|
|
static void jpgdec_shutdown(struct platform_device *pdev)
|
{
|
int ret;
|
int val;
|
struct device *dev = &pdev->dev;
|
struct jpgdec_dev *dec = platform_get_drvdata(pdev);
|
struct mpp_dev *mpp = &dec->mpp;
|
|
dev_info(dev, "shutdown device\n");
|
|
atomic_inc(&mpp->srv->shutdown_request);
|
ret = readx_poll_timeout(atomic_read,
|
&mpp->task_count,
|
val, val == 0, 20000, 200000);
|
if (ret == -ETIMEDOUT)
|
dev_err(dev, "wait total running time out\n");
|
}
|
|
struct platform_driver rockchip_jpgdec_driver = {
|
.probe = jpgdec_probe,
|
.remove = jpgdec_remove,
|
.shutdown = jpgdec_shutdown,
|
.driver = {
|
.name = JPGDEC_DRIVER_NAME,
|
.of_match_table = of_match_ptr(mpp_jpgdec_dt_match),
|
},
|
};
|
EXPORT_SYMBOL(rockchip_jpgdec_driver);
|
