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arch/arm/src/lpc54xx/lpc54_sdmmc.c: Ported the last of Dave Marples fixes to the LPC54. Not yet verified.

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This commit is contained in:
Gregory Nutt 2018-10-24 18:15:17 -06:00
parent d1c01e1135
commit c6a480f8ff
3 changed files with 43 additions and 41 deletions
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1
arch/arm/src/lpc43xx/Kconfig
View File

@ -256,7 +256,6 @@ config LPC43_SDMMC
default n
select ARCH_HAVE_SDIO
select SDIO_BLOCKSETUP
depends on EXPERIMENTAL
config LPC43_SPI
bool "SPI"

80
arch/arm/src/lpc54xx/lpc54_sdmmc.c
View File

@ -128,10 +128,10 @@
# error "Driver requires CONFIG_SDIO_BLOCKSETUP to be set"
#endif
/* Timing */
/* Timing : 100mS short timeout, 2 seconds for long one */
#define SDCARD_CMDTIMEOUT (10000)
#define SDCARD_LONGTIMEOUT (0x7fffffff)
#define SDCARD_CMDTIMEOUT MSEC2TICK(100)
#define SDCARD_LONGTIMEOUT MSEC2TICK(2000)
/* Type of Card Bus Size */
@ -621,28 +621,36 @@ static inline void lpc54_sdcard_clock(bool enable)
* arg - The argument to use with the command.
*
* Returned Value:
* None
* Returns zero on success. One will be returned on a timeout.
*
****************************************************************************/
static int lpc54_ciu_sendcmd(uint32_t cmd, uint32_t arg)
{
volatile int32_t tmo = SDCARD_CMDTIMEOUT;
clock_t watchtime;
mcinfo("cmd=%04lx arg=%04lx\n", (unsigned long)cmd, (unsigned long)arg);
DEBUGASSERT((lpc54_getreg(LPC54_SDMMC_CMD) & SDMMC_CMD_STARTCMD) == 0);
/* Set command arg reg */
lpc54_putreg(arg, LPC54_SDMMC_CMDARG);
lpc54_putreg(SDMMC_CMD_STARTCMD | cmd, LPC54_SDMMC_CMD);
/* Poll until command is accepted by the CIU */
/* Poll until command is accepted by the CIU, or we timeout */
while (--tmo > 0 && (lpc54_getreg(LPC54_SDMMC_CMD) & SDMMC_CMD_STARTCMD) != 0)
watchtime = clock_systimer();
while ((lpc54_getreg(LPC54_SDMMC_CMD) & SDMMC_CMD_STARTCMD) != 0)
{
if (watchtime - clock_systimer() > SDCARD_CMDTIMEOUT)
{
mcerr("TMO Timed out (%08X)\n",lpc54_getreg(LPC54_SDMMC_CMD));
return 1;
}
}
return (tmo < 1) ? 1 : 0;
return 0;
}
/****************************************************************************
@ -1031,7 +1039,6 @@ static int lpc54_sdmmc_interrupt(int irq, void *context, FAR void *arg)
/* Transfer data to the TX FIFO */
mcinfo("Write FIFO\n");
DEBUGASSERT(priv->wrdir);
for (status = lpc54_getreg(LPC54_SDMMC_STATUS);
@ -1043,20 +1050,6 @@ static int lpc54_sdmmc_interrupt(int irq, void *context, FAR void *arg)
priv->buffer++;
priv->remaining -= 4;
}
/* If all of the data has been transferred to the FIFO, then
* disable further TX data requests and wait for the data end
* event.
*/
if (priv->remaining <= 0)
{
uint32_t intmask = lpc54_getreg(LPC54_SDMMC_INTMASK);
intmask &= ~SDMMC_INT_TXDR;
lpc54_putreg(intmask, LPC54_SDMMC_INTMASK);
priv->xfrmask &= ~SDMMC_INT_TXDR;
}
}
else if ((pending & SDMMC_INT_RXDR) != 0)
{
@ -1064,7 +1057,6 @@ static int lpc54_sdmmc_interrupt(int irq, void *context, FAR void *arg)
/* Transfer data from the RX FIFO */
mcinfo("Read from FIFO\n");
DEBUGASSERT(!priv->wrdir);
for (status = lpc54_getreg(LPC54_SDMMC_STATUS);
@ -1076,18 +1068,6 @@ static int lpc54_sdmmc_interrupt(int irq, void *context, FAR void *arg)
priv->buffer++;
priv->remaining -= 4;
}
/* If all of the data has been transferred to the FIFO, then
* just force DTO event processing (the DTO interrupt is not
* actually even enabled in this use case).
*/
if (priv->remaining <= 0)
{
/* Force the DTO event */
pending |= SDMMC_INT_DTO;
}
}
/* Check for transfer errors */
@ -1348,7 +1328,7 @@ static void lpc54_reset(FAR struct sdio_dev_s *dev)
/* Define MAX Timeout */
lpc54_putreg(SDCARD_LONGTIMEOUT, LPC54_SDMMC_TMOUT);
lpc54_putreg(0x7fffffff, LPC54_SDMMC_TMOUT);
/* Disable clock to CIU (needs latch) */
@ -1763,6 +1743,10 @@ static int lpc54_recvsetup(FAR struct sdio_dev_s *dev, FAR uint8_t *buffer,
lpc54_putreg(regval, LPC54_SDMMC_CTRL);
#endif
/* Flush ints before we start */
lpc54_putreg(SDCARD_TRANSFER_ALL, LPC54_SDMMC_RINTSTS);
/* Configure the transfer interrupts */
lpc54_config_xfrints(priv, SDCARD_RECV_MASK);
@ -1827,6 +1811,10 @@ static int lpc54_sendsetup(FAR struct sdio_dev_s *dev, FAR const uint8_t *buffer
lpc54_putreg(regval, LPC54_SDMMC_CTRL);
#endif
/* Flush ints before we start */
lpc54_putreg(SDCARD_TRANSFER_ALL, LPC54_SDMMC_RINTSTS);
/* Configure the transfer interrupts */
lpc54_config_xfrints(priv, SDCARD_SEND_MASK);
@ -1894,6 +1882,7 @@ static int lpc54_cancel(FAR struct sdio_dev_s *dev)
static int lpc54_waitresponse(FAR struct sdio_dev_s *dev, uint32_t cmd)
{
volatile int32_t timeout;
clock_t watchtime;
uint32_t events;
mcinfo("cmd=%04x\n", cmd);
@ -1933,13 +1922,15 @@ static int lpc54_waitresponse(FAR struct sdio_dev_s *dev, uint32_t cmd)
/* Then wait for the response (or timeout or error) */
watchtime = clock_systimer();
while ((lpc54_getreg(LPC54_SDMMC_RINTSTS) & events) != events)
{
if (--timeout <= 0)
if (clock_systimer() - watchtime > timeout)
{
mcerr("ERROR: Timeout cmd: %04x events: %04x STA: %08x RINTSTS: %08x\n",
cmd, events, lpc54_getreg(LPC54_SDMMC_STATUS),
lpc54_getreg(LPC54_SDMMC_RINTSTS));
return -ETIMEDOUT;
}
else if ((lpc54_getreg(LPC54_SDMMC_RINTSTS) & SDCARD_INT_RESPERR) != 0)
@ -1947,6 +1938,7 @@ static int lpc54_waitresponse(FAR struct sdio_dev_s *dev, uint32_t cmd)
mcerr("ERROR: SDMMC failure cmd: %04x events: %04x STA: %08x RINTSTS: %08x\n",
cmd, events, lpc54_getreg(LPC54_SDMMC_STATUS),
lpc54_getreg(LPC54_SDMMC_RINTSTS));
return -EIO;
}
}
@ -2545,7 +2537,11 @@ static int lpc54_dmarecvsetup(FAR struct sdio_dev_s *dev, FAR uint8_t *buffer,
lpc54_putreg((uint32_t)&g_sdmmc_dmadd[0], LPC54_SDMMC_DBADDR);
/* Enable internal DMA, burst size of 4, fixed burst */
/* Flush ints before we start */
lpc54_putreg(SDCARD_TRANSFER_ALL, LPC54_SDMMC_RINTSTS);
/* Enable internal DMA, burst size of 4, fixed burst */
regval = lpc54_getreg(LPC54_SDMMC_CTRL);
regval |= SDMMC_CTRL_INTDMA;
@ -2691,7 +2687,11 @@ static int lpc54_dmasendsetup(FAR struct sdio_dev_s *dev,
lpc54_putreg((uint32_t) &g_sdmmc_dmadd[0], LPC54_SDMMC_DBADDR);
/* Enable internal DMA, burst size of 4, fixed burst */
/* Flush ints before we start */
lpc54_putreg(SDCARD_TRANSFER_ALL, LPC54_SDMMC_RINTSTS);
/* Enable internal DMA, burst size of 4, fixed burst */
regval = lpc54_getreg(LPC54_SDMMC_CTRL);
regval |= SDMMC_CTRL_INTDMA;

3
configs/lpcxpresso-lpc54628/README.txt
View File

@ -112,6 +112,9 @@ STATUS
of the time. I still get CRC errors when writing and I have not
successfully written to the SD card. It is closer but more TLC is
needed.
2018-10-24: Dave Marples now has the LPC43 SD/MMC working reliably. I
have ported all of Dave's change to the LPC54 but have done no further
testing as of this writing. The feature is still marked EXPERIMENTAL.
There is still no support for the Accelerometer, SPIFI, or USB. There is
a complete but not entirely functional SD card driver and and tested SPI