C++ (Cpp) SPI_MMC_RESPONSE_CODE Exemples

Exemple #1

Fichier : mci_spi.c Projet : Jokymon/barebox

static uint mmc_spi_writedata(struct mmc_spi_host *host, const void *xbuf,
			      uint32_t bcnt, uint32_t bsize, int multi)
{
	const uint8_t *buf = xbuf;
	uint8_t r1;
	uint16_t crc = 0;
	uint8_t tok[2];
	int i;

	tok[0] = 0xff;
	tok[1] = multi ? SPI_TOKEN_MULTI_WRITE : SPI_TOKEN_SINGLE;

	while (bcnt--) {
#ifdef CONFIG_MMC_SPI_CRC_ON
		crc = be16_to_cpu(cyg_crc16((u8 *)buf, bsize));
#endif
		mmc_spi_writebytes(host, 2, tok);
		mmc_spi_writebytes(host, bsize, (void *)buf);
		mmc_spi_writebytes(host, 2, &crc);

		for (i = 0; i < CTOUT; i++) {
			mmc_spi_readbytes(host, 1, &r1);
			if ((r1 & 0x11) == 0x01) /* response token */
				break;
		}

		dev_dbg(host->dev,"%s   : TOKEN%d RESP 0x%X\n", __func__, i, r1);
		if (SPI_MMC_RESPONSE_CODE(r1) == SPI_RESPONSE_ACCEPTED) {
			for (i = 0; i < WTOUT; i++) { /* wait busy */
				mmc_spi_readbytes(host, 1, &r1);
				if (i && r1 == 0xff) {
					r1 = 0;
					break;
				}
			}
			if (i == WTOUT) {
				dev_dbg(host->dev, "%s: wtout %x\n", __func__, r1);
				r1 = R1_SPI_ERROR;
				break;
			}
		} else {
			dev_dbg(host->dev, "%s: err %x\n", __func__, r1);
			r1 = R1_SPI_COM_CRC;
			break;
		}
		buf += bsize;
	}

	if (multi && bcnt == -1) { /* stop multi write */
		tok[1] = SPI_TOKEN_STOP_TRAN;
		mmc_spi_writebytes(host, 2, tok);
		for (i = 0; i < WTOUT; i++) { /* wait busy */
			mmc_spi_readbytes(host, 1, &r1);
			if (i && r1 == 0xff) {
				r1 = 0;
				break;
			}
		}
		if (i == WTOUT) {
			dev_dbg(host->dev, "%s: wstop %x\n", __func__, r1);
			r1 = R1_SPI_ERROR;
		}
	}

	return r1;
}

Exemple #2

Fichier : mmc_spi.c Projet : 13xiaobang/mini2440-uboot_2016.01

static uint mmc_spi_writedata(struct mmc *mmc, const void *xbuf,
			      u32 bcnt, u32 bsize, int multi)
{
	struct spi_slave *spi = mmc->priv;
	const u8 *buf = xbuf;
	u8 r1;
	u16 crc;
	u8 tok[2];
	int i;
	tok[0] = 0xff;
	tok[1] = multi ? SPI_TOKEN_MULTI_WRITE : SPI_TOKEN_SINGLE;
	while (bcnt--) {
#ifdef CONFIG_MMC_SPI_CRC_ON
		crc = cpu_to_be16(cyg_crc16((u8 *)buf, bsize));
#endif
		spi_xfer(spi, 2 * 8, tok, NULL, 0);
		spi_xfer(spi, bsize * 8, buf, NULL, 0);
		spi_xfer(spi, 2 * 8, &crc, NULL, 0);
		for (i = 0; i < CTOUT; i++) {
			spi_xfer(spi, 1 * 8, NULL, &r1, 0);
			if ((r1 & 0x10) == 0) /* response token */
				break;
		}
		debug("%s:tok%d %x\n", __func__, i, r1);
		if (SPI_MMC_RESPONSE_CODE(r1) == SPI_RESPONSE_ACCEPTED) {
			for (i = 0; i < WTOUT; i++) { /* wait busy */
				spi_xfer(spi, 1 * 8, NULL, &r1, 0);
				if (i && r1 == 0xff) {
					r1 = 0;
					break;
				}
			}
			if (i == WTOUT) {
				debug("%s:wtout %x\n", __func__, r1);
				r1 = R1_SPI_ERROR;
				break;
			}
		} else {
			debug("%s: err %x\n", __func__, r1);
			r1 = R1_SPI_COM_CRC;
			break;
		}
		buf += bsize;
	}
	if (multi && bcnt == -1) { /* stop multi write */
		tok[1] = SPI_TOKEN_STOP_TRAN;
		spi_xfer(spi, 2 * 8, tok, NULL, 0);
		for (i = 0; i < WTOUT; i++) { /* wait busy */
			spi_xfer(spi, 1 * 8, NULL, &r1, 0);
			if (i && r1 == 0xff) {
				r1 = 0;
				break;
			}
		}
		if (i == WTOUT) {
			debug("%s:wstop %x\n", __func__, r1);
			r1 = R1_SPI_ERROR;
		}
	}
	return r1;
}