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Some small refinements to commit 98f268b303

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This commit is contained in:
Dave Marples 2018-10-23 17:32:26 -06:00 committed by Gregory Nutt
parent 92e4a7223c
commit 2b0f680349
1 changed files with 18 additions and 12 deletions
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30
arch/arm/src/lpc43xx/lpc43_sdmmc.c
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@ -140,6 +140,10 @@
#define LPC43_TXFIFO_SIZE (LPC43_TXFIFO_DEPTH | LPC43_TXFIFO_WIDTH)
#define LPC43_RXFIFO_SIZE (LPC43_RXFIFO_DEPTH | LPC43_RXFIFO_WIDTH)
/* Number of DMA Descriptors */
#define NUM_DMA_DESCRIPTORS (1 + (0x10000 / MCI_DMADES1_MAXTR))
/* Data transfer interrupt mask bits */
#define SDCARD_RECV_MASK (SDMMC_INT_DTO | SDMMC_INT_DCRC | SDMMC_INT_DRTO | \
@ -397,7 +401,7 @@ struct lpc43_dev_s g_scard_dev =
};
#ifdef CONFIG_LPC43_SDMMC_DMA
static struct sdmmc_dma_s g_sdmmc_dmadd[1 + (0x10000 / MCI_DMADES1_MAXTR)];
static struct sdmmc_dma_s g_sdmmc_dmadd[NUM_DMA_DESCRIPTORS];
#endif
/****************************************************************************
@ -2453,7 +2457,7 @@ static int lpc43_dmarecvsetup(FAR struct sdio_dev_s *dev, FAR uint8_t *buffer,
return lpc43_recvsetup(dev, buffer, buflen);
}
mcinfo("buflen=%lu\n", (unsigned long)buflen);
mcinfo("buffer=%p buflen=%lu\n", buffer, (unsigned long)buflen, buffer);
DEBUGASSERT(buffer != NULL && buflen > 0 && ((uint32_t)buffer & 3) == 0);
/* Reset DMA controller internal registers. The SWR bit automatically
@ -2475,7 +2479,7 @@ static int lpc43_dmarecvsetup(FAR struct sdio_dev_s *dev, FAR uint8_t *buffer,
regval |= SDMMC_CTRL_FIFORESET | SDMMC_CTRL_DMARESET;
lpc43_putreg(regval, LPC43_SDMMC_CTRL);
while ((lpc43_getreg(LPC43_SDMMC_CTRL) & SDMMC_CTRL_DMARESET) != 0)
while ((lpc43_getreg(LPC43_SDMMC_CTRL) & (SDMMC_CTRL_FIFORESET | SDMMC_CTRL_DMARESET)) != 0)
{
}
@ -2525,19 +2529,20 @@ static int lpc43_dmarecvsetup(FAR struct sdio_dev_s *dev, FAR uint8_t *buffer,
if (buflen == 0)
{
ctrl |= MCI_DMADES0_LD;
g_sdmmc_dmadd[i].des3 = 0;
}
else
{
ctrl |= MCI_DMADES0_DIC;
g_sdmmc_dmadd[i].des3 = (uint32_t)&g_sdmmc_dmadd[i + 1];
}
/* Another descriptor is needed */
g_sdmmc_dmadd[i].des0 = ctrl;
g_sdmmc_dmadd[i].des3 = (uint32_t)&g_sdmmc_dmadd[i + 1];
i++;
}
DEBUGASSERT(i < NUM_DMA_DESCRIPTORS);
lpc43_putreg((uint32_t)&g_sdmmc_dmadd[0], LPC43_SDMMC_DBADDR);
/* Enable internal DMA, burst size of 4, fixed burst */
@ -2546,7 +2551,7 @@ static int lpc43_dmarecvsetup(FAR struct sdio_dev_s *dev, FAR uint8_t *buffer,
regval |= SDMMC_CTRL_INTDMA;
lpc43_putreg(regval, LPC43_SDMMC_CTRL);
regval = SDMMC_BMOD_DE | SDMMC_BMOD_PBL_4XFRS | SDMMC_BMOD_DSL(4);
regval = SDMMC_BMOD_DE | SDMMC_BMOD_PBL_4XFRS;
lpc43_putreg(regval, LPC43_SDMMC_BMOD);
/* Setup DMA error interrupts */
@ -2620,7 +2625,7 @@ static int lpc43_dmasendsetup(FAR struct sdio_dev_s *dev,
regval |= SDMMC_CTRL_FIFORESET | SDMMC_CTRL_DMARESET;
lpc43_putreg(regval, LPC43_SDMMC_CTRL);
while ((lpc43_getreg(LPC43_SDMMC_CTRL) & SDMMC_CTRL_DMARESET) != 0)
while ((lpc43_getreg(LPC43_SDMMC_CTRL) & (SDMMC_CTRL_FIFORESET | SDMMC_CTRL_DMARESET)) != 0)
{
}
@ -2670,19 +2675,20 @@ static int lpc43_dmasendsetup(FAR struct sdio_dev_s *dev,
if (buflen == 0)
{
ctrl |= MCI_DMADES0_LD;
g_sdmmc_dmadd[i].des3 = 0;
}
else
{
ctrl |= MCI_DMADES0_DIC;
g_sdmmc_dmadd[i].des3 = (uint32_t)&g_sdmmc_dmadd[i + 1];
}
/* Another descriptor is needed */
g_sdmmc_dmadd[i].des0 = ctrl;
g_sdmmc_dmadd[i].des3 = (uint32_t)&g_sdmmc_dmadd[i + 1];
i++;
}
DEBUGASSERT(i < NUM_DMA_DESCRIPTORS);
lpc43_putreg((uint32_t) &g_sdmmc_dmadd[0], LPC43_SDMMC_DBADDR);
/* Enable internal DMA, burst size of 4, fixed burst */
@ -2691,7 +2697,7 @@ static int lpc43_dmasendsetup(FAR struct sdio_dev_s *dev,
regval |= SDMMC_CTRL_INTDMA;
lpc43_putreg(regval, LPC43_SDMMC_CTRL);
regval = SDMMC_BMOD_DE | SDMMC_BMOD_PBL_4XFRS | SDMMC_BMOD_DSL(4);
regval = SDMMC_BMOD_DE | SDMMC_BMOD_PBL_4XFRS;
lpc43_putreg(regval, LPC43_SDMMC_BMOD);
/* Setup DMA error interrupts */