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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * linux/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_cmd_v5.c4 *5 * Copyright (C) 2011 Samsung Electronics Co., Ltd.6 *		http://www.samsung.com/7 */8 9#include "regs-mfc.h"10#include "s5p_mfc_cmd.h"11#include "s5p_mfc_common.h"12#include "s5p_mfc_debug.h"13#include "s5p_mfc_cmd_v5.h"14 15/* This function is used to send a command to the MFC */16static int s5p_mfc_cmd_host2risc_v5(struct s5p_mfc_dev *dev, int cmd,17				    const struct s5p_mfc_cmd_args *args)18{19	int cur_cmd;20	unsigned long timeout;21 22	timeout = jiffies + msecs_to_jiffies(MFC_BW_TIMEOUT);23	/* wait until host to risc command register becomes 'H2R_CMD_EMPTY' */24	do {25		if (time_after(jiffies, timeout)) {26			mfc_err("Timeout while waiting for hardware\n");27			return -EIO;28		}29		cur_cmd = mfc_read(dev, S5P_FIMV_HOST2RISC_CMD);30	} while (cur_cmd != S5P_FIMV_H2R_CMD_EMPTY);31	mfc_write(dev, args->arg[0], S5P_FIMV_HOST2RISC_ARG1);32	mfc_write(dev, args->arg[1], S5P_FIMV_HOST2RISC_ARG2);33	mfc_write(dev, args->arg[2], S5P_FIMV_HOST2RISC_ARG3);34	mfc_write(dev, args->arg[3], S5P_FIMV_HOST2RISC_ARG4);35	/* Issue the command */36	mfc_write(dev, cmd, S5P_FIMV_HOST2RISC_CMD);37	return 0;38}39 40/* Initialize the MFC */41static int s5p_mfc_sys_init_cmd_v5(struct s5p_mfc_dev *dev)42{43	struct s5p_mfc_cmd_args h2r_args;44 45	memset(&h2r_args, 0, sizeof(struct s5p_mfc_cmd_args));46	h2r_args.arg[0] = dev->fw_buf.size;47	return s5p_mfc_cmd_host2risc_v5(dev, S5P_FIMV_H2R_CMD_SYS_INIT,48			&h2r_args);49}50 51/* Suspend the MFC hardware */52static int s5p_mfc_sleep_cmd_v5(struct s5p_mfc_dev *dev)53{54	struct s5p_mfc_cmd_args h2r_args;55 56	memset(&h2r_args, 0, sizeof(struct s5p_mfc_cmd_args));57	return s5p_mfc_cmd_host2risc_v5(dev, S5P_FIMV_H2R_CMD_SLEEP, &h2r_args);58}59 60/* Wake up the MFC hardware */61static int s5p_mfc_wakeup_cmd_v5(struct s5p_mfc_dev *dev)62{63	struct s5p_mfc_cmd_args h2r_args;64 65	memset(&h2r_args, 0, sizeof(struct s5p_mfc_cmd_args));66	return s5p_mfc_cmd_host2risc_v5(dev, S5P_FIMV_H2R_CMD_WAKEUP,67			&h2r_args);68}69 70 71static int s5p_mfc_open_inst_cmd_v5(struct s5p_mfc_ctx *ctx)72{73	struct s5p_mfc_dev *dev = ctx->dev;74	struct s5p_mfc_cmd_args h2r_args;75	int ret;76 77	/* Preparing decoding - getting instance number */78	mfc_debug(2, "Getting instance number (codec: %d)\n", ctx->codec_mode);79	dev->curr_ctx = ctx->num;80	memset(&h2r_args, 0, sizeof(struct s5p_mfc_cmd_args));81	switch (ctx->codec_mode) {82	case S5P_MFC_CODEC_H264_DEC:83		h2r_args.arg[0] = S5P_FIMV_CODEC_H264_DEC;84		break;85	case S5P_MFC_CODEC_VC1_DEC:86		h2r_args.arg[0] = S5P_FIMV_CODEC_VC1_DEC;87		break;88	case S5P_MFC_CODEC_MPEG4_DEC:89		h2r_args.arg[0] = S5P_FIMV_CODEC_MPEG4_DEC;90		break;91	case S5P_MFC_CODEC_MPEG2_DEC:92		h2r_args.arg[0] = S5P_FIMV_CODEC_MPEG2_DEC;93		break;94	case S5P_MFC_CODEC_H263_DEC:95		h2r_args.arg[0] = S5P_FIMV_CODEC_H263_DEC;96		break;97	case S5P_MFC_CODEC_VC1RCV_DEC:98		h2r_args.arg[0] = S5P_FIMV_CODEC_VC1RCV_DEC;99		break;100	case S5P_MFC_CODEC_H264_ENC:101		h2r_args.arg[0] = S5P_FIMV_CODEC_H264_ENC;102		break;103	case S5P_MFC_CODEC_MPEG4_ENC:104		h2r_args.arg[0] = S5P_FIMV_CODEC_MPEG4_ENC;105		break;106	case S5P_MFC_CODEC_H263_ENC:107		h2r_args.arg[0] = S5P_FIMV_CODEC_H263_ENC;108		break;109	default:110		h2r_args.arg[0] = S5P_FIMV_CODEC_NONE;111	}112	h2r_args.arg[1] = 0; /* no crc & no pixelcache */113	h2r_args.arg[2] = ctx->ctx.ofs;114	h2r_args.arg[3] = ctx->ctx.size;115	ret = s5p_mfc_cmd_host2risc_v5(dev, S5P_FIMV_H2R_CMD_OPEN_INSTANCE,116								&h2r_args);117	if (ret) {118		mfc_err("Failed to create a new instance\n");119		ctx->state = MFCINST_ERROR;120	}121	return ret;122}123 124static int s5p_mfc_close_inst_cmd_v5(struct s5p_mfc_ctx *ctx)125{126	struct s5p_mfc_dev *dev = ctx->dev;127	struct s5p_mfc_cmd_args h2r_args;128	int ret;129 130	if (ctx->state == MFCINST_FREE) {131		mfc_err("Instance already returned\n");132		ctx->state = MFCINST_ERROR;133		return -EINVAL;134	}135	/* Closing decoding instance  */136	mfc_debug(2, "Returning instance number %d\n", ctx->inst_no);137	dev->curr_ctx = ctx->num;138	memset(&h2r_args, 0, sizeof(struct s5p_mfc_cmd_args));139	h2r_args.arg[0] = ctx->inst_no;140	ret = s5p_mfc_cmd_host2risc_v5(dev, S5P_FIMV_H2R_CMD_CLOSE_INSTANCE,141								&h2r_args);142	if (ret) {143		mfc_err("Failed to return an instance\n");144		ctx->state = MFCINST_ERROR;145		return -EINVAL;146	}147	return 0;148}149 150/* Initialize cmd function pointers for MFC v5 */151static const struct s5p_mfc_hw_cmds s5p_mfc_cmds_v5 = {152	.cmd_host2risc = s5p_mfc_cmd_host2risc_v5,153	.sys_init_cmd = s5p_mfc_sys_init_cmd_v5,154	.sleep_cmd = s5p_mfc_sleep_cmd_v5,155	.wakeup_cmd = s5p_mfc_wakeup_cmd_v5,156	.open_inst_cmd = s5p_mfc_open_inst_cmd_v5,157	.close_inst_cmd = s5p_mfc_close_inst_cmd_v5,158};159 160const struct s5p_mfc_hw_cmds *s5p_mfc_init_hw_cmds_v5(void)161{162	return &s5p_mfc_cmds_v5;163}164