kernel/drivers/media/platform/s5p-mfc/s5p_mfc_cmd_v5.c

   1 /*
   2  * linux/drivers/media/platform/s5p-mfc/s5p_mfc_cmd_v5.c
   3  *
   4  * Copyright (C) 2011 Samsung Electronics Co., Ltd.
   5  *              http://www.samsung.com/
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  */
  12
  13 #include "regs-mfc.h"
  14 #include "s5p_mfc_cmd.h"
  15 #include "s5p_mfc_common.h"
  16 #include "s5p_mfc_debug.h"
  17 #include "s5p_mfc_cmd_v5.h"
  18
  19 /* This function is used to send a command to the MFC */
  20 static int s5p_mfc_cmd_host2risc_v5(struct s5p_mfc_dev *dev, int cmd,
  21                                 struct s5p_mfc_cmd_args *args)
  22 {
  23         int cur_cmd;
  24         unsigned long timeout;
  25
  26         timeout = jiffies + msecs_to_jiffies(MFC_BW_TIMEOUT);
  27         /* wait until host to risc command register becomes 'H2R_CMD_EMPTY' */
  28         do {
  29                 if (time_after(jiffies, timeout)) {
  30                         mfc_err("Timeout while waiting for hardware\n");
  31                         return -EIO;
  32                 }
  33                 cur_cmd = mfc_read(dev, S5P_FIMV_HOST2RISC_CMD);
  34         } while (cur_cmd != S5P_FIMV_H2R_CMD_EMPTY);
  35         mfc_write(dev, args->arg[0], S5P_FIMV_HOST2RISC_ARG1);
  36         mfc_write(dev, args->arg[1], S5P_FIMV_HOST2RISC_ARG2);
  37         mfc_write(dev, args->arg[2], S5P_FIMV_HOST2RISC_ARG3);
  38         mfc_write(dev, args->arg[3], S5P_FIMV_HOST2RISC_ARG4);
  39         /* Issue the command */
  40         mfc_write(dev, cmd, S5P_FIMV_HOST2RISC_CMD);
  41         return 0;
  42 }
  43
  44 /* Initialize the MFC */
  45 static int s5p_mfc_sys_init_cmd_v5(struct s5p_mfc_dev *dev)
  46 {
  47         struct s5p_mfc_cmd_args h2r_args;
  48
  49         memset(&h2r_args, 0, sizeof(struct s5p_mfc_cmd_args));
  50         h2r_args.arg[0] = dev->fw_size;
  51         return s5p_mfc_cmd_host2risc_v5(dev, S5P_FIMV_H2R_CMD_SYS_INIT,
  52                         &h2r_args);
  53 }
  54
  55 /* Suspend the MFC hardware */
  56 static int s5p_mfc_sleep_cmd_v5(struct s5p_mfc_dev *dev)
  57 {
  58         struct s5p_mfc_cmd_args h2r_args;
  59
  60         memset(&h2r_args, 0, sizeof(struct s5p_mfc_cmd_args));
  61         return s5p_mfc_cmd_host2risc_v5(dev, S5P_FIMV_H2R_CMD_SLEEP, &h2r_args);
  62 }
  63
  64 /* Wake up the MFC hardware */
  65 static int s5p_mfc_wakeup_cmd_v5(struct s5p_mfc_dev *dev)
  66 {
  67         struct s5p_mfc_cmd_args h2r_args;
  68
  69         memset(&h2r_args, 0, sizeof(struct s5p_mfc_cmd_args));
  70         return s5p_mfc_cmd_host2risc_v5(dev, S5P_FIMV_H2R_CMD_WAKEUP,
  71                         &h2r_args);
  72 }
  73
  74
  75 static int s5p_mfc_open_inst_cmd_v5(struct s5p_mfc_ctx *ctx)
  76 {
  77         struct s5p_mfc_dev *dev = ctx->dev;
  78         struct s5p_mfc_cmd_args h2r_args;
  79         int ret;
  80
  81         /* Preparing decoding - getting instance number */
  82         mfc_debug(2, "Getting instance number (codec: %d)\n", ctx->codec_mode);
  83         dev->curr_ctx = ctx->num;
  84         memset(&h2r_args, 0, sizeof(struct s5p_mfc_cmd_args));
  85         switch (ctx->codec_mode) {
  86         case S5P_MFC_CODEC_H264_DEC:
  87                 h2r_args.arg[0] = S5P_FIMV_CODEC_H264_DEC;
  88                 break;
  89         case S5P_MFC_CODEC_VC1_DEC:
  90                 h2r_args.arg[0] = S5P_FIMV_CODEC_VC1_DEC;
  91                 break;
  92         case S5P_MFC_CODEC_MPEG4_DEC:
  93                 h2r_args.arg[0] = S5P_FIMV_CODEC_MPEG4_DEC;
  94                 break;
  95         case S5P_MFC_CODEC_MPEG2_DEC:
  96                 h2r_args.arg[0] = S5P_FIMV_CODEC_MPEG2_DEC;
  97                 break;
  98         case S5P_MFC_CODEC_H263_DEC:
  99                 h2r_args.arg[0] = S5P_FIMV_CODEC_H263_DEC;
 100                 break;
 101         case S5P_MFC_CODEC_VC1RCV_DEC:
 102                 h2r_args.arg[0] = S5P_FIMV_CODEC_VC1RCV_DEC;
 103                 break;
 104         case S5P_MFC_CODEC_H264_ENC:
 105                 h2r_args.arg[0] = S5P_FIMV_CODEC_H264_ENC;
 106                 break;
 107         case S5P_MFC_CODEC_MPEG4_ENC:
 108                 h2r_args.arg[0] = S5P_FIMV_CODEC_MPEG4_ENC;
 109                 break;
 110         case S5P_MFC_CODEC_H263_ENC:
 111                 h2r_args.arg[0] = S5P_FIMV_CODEC_H263_ENC;
 112                 break;
 113         default:
 114                 h2r_args.arg[0] = S5P_FIMV_CODEC_NONE;
 115         }
 116         h2r_args.arg[1] = 0; /* no crc & no pixelcache */
 117         h2r_args.arg[2] = ctx->ctx.ofs;
 118         h2r_args.arg[3] = ctx->ctx.size;
 119         ret = s5p_mfc_cmd_host2risc_v5(dev, S5P_FIMV_H2R_CMD_OPEN_INSTANCE,
 120                                                                 &h2r_args);
 121         if (ret) {
 122                 mfc_err("Failed to create a new instance\n");
 123                 ctx->state = MFCINST_ERROR;
 124         }
 125         return ret;
 126 }
 127
 128 static int s5p_mfc_close_inst_cmd_v5(struct s5p_mfc_ctx *ctx)
 129 {
 130         struct s5p_mfc_dev *dev = ctx->dev;
 131         struct s5p_mfc_cmd_args h2r_args;
 132         int ret;
 133
 134         if (ctx->state == MFCINST_FREE) {
 135                 mfc_err("Instance already returned\n");
 136                 ctx->state = MFCINST_ERROR;
 137                 return -EINVAL;
 138         }
 139         /* Closing decoding instance  */
 140         mfc_debug(2, "Returning instance number %d\n", ctx->inst_no);
 141         dev->curr_ctx = ctx->num;
 142         memset(&h2r_args, 0, sizeof(struct s5p_mfc_cmd_args));
 143         h2r_args.arg[0] = ctx->inst_no;
 144         ret = s5p_mfc_cmd_host2risc_v5(dev, S5P_FIMV_H2R_CMD_CLOSE_INSTANCE,
 145                                                                 &h2r_args);
 146         if (ret) {
 147                 mfc_err("Failed to return an instance\n");
 148                 ctx->state = MFCINST_ERROR;
 149                 return -EINVAL;
 150         }
 151         return 0;
 152 }
 153
 154 /* Initialize cmd function pointers for MFC v5 */
 155 static struct s5p_mfc_hw_cmds s5p_mfc_cmds_v5 = {
 156         .cmd_host2risc = s5p_mfc_cmd_host2risc_v5,
 157         .sys_init_cmd = s5p_mfc_sys_init_cmd_v5,
 158         .sleep_cmd = s5p_mfc_sleep_cmd_v5,
 159         .wakeup_cmd = s5p_mfc_wakeup_cmd_v5,
 160         .open_inst_cmd = s5p_mfc_open_inst_cmd_v5,
 161         .close_inst_cmd = s5p_mfc_close_inst_cmd_v5,
 162 };
 163
 164 struct s5p_mfc_hw_cmds *s5p_mfc_init_hw_cmds_v5(void)
 165 {
 166         return &s5p_mfc_cmds_v5;
 167 }