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mmcsd: add write ext csd reg support

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Signed-off-by: wanggang26 <wanggang26@xiaomi.com>
This commit is contained in:
wanggang26 2023-10-11 18:43:50 +08:00 committed by Petro Karashchenko
parent 90c0acce05
commit dfffaee706
2 changed files with 59 additions and 1 deletions
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57
drivers/mmcsd/mmcsd_sdio.c
View File

@ -1007,6 +1007,54 @@ static void mmcsd_decode_scr(FAR struct mmcsd_state_s *priv, uint32_t scr[2])
#endif
}
#ifdef CONFIG_MMCSD_IOCSUPPORT
/****************************************************************************
* Name: mmcsd_switch
*
* Description:
* Execute CMD6 to switch the mode of operation of the selected device or
* modify the EXT_CSD registers.
*
****************************************************************************/
static int mmcsd_switch(FAR struct mmcsd_state_s *priv, uint32_t arg)
{
/* After putting a slave into transfer state, master sends
* CMD6(SWITCH) to set the PARTITION_ACCESS bits in the EXT_CSD
* register, byte[179].After that, master can use the Multiple Block
* read and write commands (CMD23, CMD18 and CMD25) to access the
* RPMB partition.
* PARTITION_CONFIG[179](see 7.4.69)
* Bit[2:0] : PARTITION_ACCESS (before BOOT_PARTITION_ACCESS)
* User selects partitions to access:
* 0x0 : No access to boot partition (default)
* 0x1 : R/W boot partition 1
* 0x2 : R/W boot partition 2
* 0x3 : R/W Replay Protected Memory Block (RPMB)
* 0x4 : Access to General Purpose partition 1
* 0x5 : Access to General Purpose partition 2
* 0x6 : Access to General Purpose partition 3
* 0x7 : Access to General Purpose partition 4
*
* CMD6 Argument(see 6.10.4)
* [31:26] Set to 0
* [25:24] Access Bits
* 00 Command Set
* 01 Set Bits
* 10 Clear Bits
* 11 Write Byte
* [23:16] Index
* [15:8] Value
* [7:3] Set to 0
* [2:0] Cmd Set
*/
mmcsd_sendcmdpoll(priv, MMCSD_CMD6, arg);
return mmcsd_recv_r1(priv, MMCSD_CMD6);
}
#endif /* CONFIG_MMCSD_IOCSUPPORT */
/****************************************************************************
* Name: mmcsd_get_r1
*
@ -3200,6 +3248,15 @@ static int mmcsd_iocmd(FAR struct mmcsd_state_s *priv,
priv->cid, sizeof(priv->cid));
}
break;
case MMCSD_CMDIDX6: /* Switch commands */
{
ret = mmcsd_switch(priv, ic_ptr->arg);
if (ret != OK)
{
ferr("ERROR: mmcsd_switch failed: %d\n", ret);
}
}
break;
#ifdef CONFIG_MMCSD_MMCSUPPORT
case MMC_CMDIDX8: /* Get extended csd reg data */
{

3
drivers/mmcsd/mmcsd_sdio.h
View File

@ -155,9 +155,10 @@
# define MMCSD_R1_STATE_DIS ((uint32_t)8 << MMCSD_R1_STATE_SHIFT) /* 8=Disconnect state */
#define MMCSD_R1_READYFORDATA ((uint32_t)1 << 8) /* Buffer empty */
#define MMCSD_R1_SWITCHERROR ((uint32_t)1 << 7) /* Device mode switch error */
#define MMCSD_R1_APPCMD ((uint32_t)1 << 5) /* Next CMD is ACMD */
#define MMCSD_R1_AKESEQERROR ((uint32_t)1 << 3) /* Authentication error */
#define MMCSD_R1_ERRORMASK ((uint32_t)0xfdffe008) /* Error mask */
#define MMCSD_R1_ERRORMASK ((uint32_t)0xfdffe088) /* Error mask */
#define IS_STATE(v,s) ((((uint32_t)v)&MMCSD_R1_STATE_MASK)==(s))