2 * linux/drivers/mmc/sdio_ops.c
4 * Copyright 2006-2007 Pierre Ossman
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or (at
9 * your option) any later version.
12 #include <linux/mmc/host.h>
13 #include <linux/mmc/card.h>
14 #include <linux/mmc/mmc.h>
15 #include <linux/mmc/sdio.h>
19 int mmc_send_io_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
21 struct mmc_command cmd;
26 memset(&cmd, 0, sizeof(struct mmc_command));
28 cmd.opcode = SD_IO_SEND_OP_COND;
30 cmd.flags = MMC_RSP_R4 | MMC_CMD_BCR;
32 for (i = 100; i; i--) {
33 err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES);
37 if (cmd.resp[0] & MMC_CARD_BUSY || ocr == 0)
51 int mmc_io_rw_direct(struct mmc_card *card, int write, unsigned fn,
52 unsigned addr, u8 in, u8* out)
54 struct mmc_command cmd;
60 memset(&cmd, 0, sizeof(struct mmc_command));
62 cmd.opcode = SD_IO_RW_DIRECT;
63 cmd.arg = write ? 0x80000000 : 0x00000000;
65 cmd.arg |= (write && out) ? 0x08000000 : 0x00000000;
68 cmd.flags = MMC_RSP_R5 | MMC_CMD_AC;
70 err = mmc_wait_for_cmd(card->host, &cmd, 0);
74 if (cmd.resp[0] & R5_ERROR)
76 if (cmd.resp[0] & R5_FUNCTION_NUMBER)
78 if (cmd.resp[0] & R5_OUT_OF_RANGE)
82 *out = cmd.resp[0] & 0xFF;