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Add IOCTLs and card identification logic

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2253 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2009-11-13 23:30:41 +00:00
parent 5d816174df
commit 15e7af4e97
1 changed files with 76 additions and 4 deletions
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arch/arm/src/stm32/stm32_sdio.c
+76 -4
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@@ -81,7 +81,12 @@
#define STM32_CLCKCR_TRANSFER \
(SDIO_TRANSFER_CLKDIV|SDIO_CLKCR_RISINGEDGE|SDIO_CLKCR_WIDBUS_D1)
#define STM32_CLKCR_WIDETRANSFER \
(SDIO_TRANSFER_CLKDIV|SDIO_CLKCR_RISINGEDGE|SDIO_CLKCR_WIDBUS_D4)
(SDIO_TRANSFER_CLKDIV|SDIO_CLKCR_RISINGEDGE|SDIO_CLKCR_WIDBUS_D4)
/* Timing */
#define SDIO_CMDTIMEOUT 100000
#define SDIO_LONGTIMEOUT 0x7fffffff
/****************************************************************************
* Private Types
@@ -139,7 +144,8 @@ static int stm32_attach(FAR struct sdio_dev_s *dev);
static void stm32_sendcmd(FAR struct sdio_dev_s *dev, uint32 cmd, uint32 arg);
static int stm32_senddata(FAR struct sdio_dev_s *dev,
FAR const ubyte *buffer);
static int stm32_waitresponseFAR struct sdio_dev_s *dev, uint32 cmd);
static int stm32_recvshortcrc(FAR struct sdio_dev_s *dev, uint32 cmd, uint32 *rshort);
static int stm32_recvlong(FAR struct sdio_dev_s *dev, uint32 cmd, uint32 rlong[4]);
static int stm32_recvshort(FAR struct sdio_dev_s *dev, uint32 cmd, uint32 *rshort);
@@ -191,7 +197,8 @@ struct stm32_dev_s g_mmcsd =
.setblocklen = stm32_setblocklen,
.attach = stm32_attach,
.sendcmd = stm32_sendcmd,
.senddata = stm32_senddata,
.senddata = stm32_senddata,
.waitresponse = stm32_waitresponse,
.recvR1 = stm32_recvshortcrc,
.recvR2 = stm32_recvlong,
.recvR3 = stm32_recvshort,
@@ -629,6 +636,71 @@ static int stm32_senddata(FAR struct sdio_dev_s *dev, FAR const ubyte *buffer)
return -ENOSYS;
}
/****************************************************************************
* Name: stm32_waitresponse
*
* Description:
* Poll-wait for the response to the last command to be ready.
*
* Input Parameters:
* dev - An instance of the MMC/SD device interface
* cmd - The command that was sent. See 32-bit command definitions above.
*
* Returned Value:
* OK is success; a negated errno on failure
*
****************************************************************************/
static int stm32_waitresponseFAR struct sdio_dev_s *dev, uint32 cmd)
{
sint32 timeout = SDIO_LONGTIMEOUT;
uint32 events;
switch (cmd & MMCSD_RESPONSE_MASK)
{
case MMCSD_NO_RESPONSE:
timeout = SDIO_CMDTIMEOUT;
events = SDIO_STA_CMDSENT;
break;
case MMCSD_R1_RESPONSE:
case MMCSD_R1B_RESPONSE:
case MMCSD_R2_RESPONSE:
case MMCSD_R6_RESPONSE:
events = SDIO_STA_CTIMEOUT|SDIO_STA_CCRCFAIL|SDIO_STA_CMDREND;
break;
case MMCSD_R4_RESPONSE:
case MMCSD_R5_RESPONSE:
return -ENOSYS;
case MMCSD_R3_RESPONSE:
case MMCSD_R7_RESPONSE:
events = SDIO_STA_CTIMEOUT|SDIO_STA_CMDREND;
timeout = SDIO_CMDTIMEOUT;
break;
default:
return -EINVAL;
}
/* Then wait for the response (or timeout) */
while ((getreg32(STM32_SDIO_STA) & events) == 0)
{
if (--timeout <= 0)
{
fdbg("ERROR: Timeout cmd=%04x\n", cmd);
return -ETIMEDOUT;
}
}
/* Clear all the static flags */
putreg32(SDIO_ICR_STATICFLAGS, STM32_SDIO_ICR);
return OK;
}
/****************************************************************************
* Name: stm32_recvRx
*
@@ -817,7 +889,7 @@ static int stm32_recvshort(FAR struct sdio_dev_s *dev, uint32 cmd, uint32 *rshor
}
#endif
regval = getreg32(STM32_SDIO_STA);
regval = getreg32(STM32_SDIO_STA);
if (regval & SDIO_STA_CTIMEOUT)
{
putreg32(SDIO_ICR_CTIMEOUTC, STM32_SDIO_ICR);