C++ (Cpp) spi_flash_probe_esmt примеры использования

Пример #1

Файл: spi_flash.c Проект: Stane1983/Amlogic-reff16-uboot

struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
		unsigned int max_hz, unsigned int spi_mode)
{
	struct spi_slave *spi;
	struct spi_flash *flash;
	int ret;
	u8 idcode[5];

	spi = spi_setup_slave(bus, cs, max_hz, spi_mode);
	if (!spi) {
		debug("SF: Failed to set up slave\n");
		return NULL;
	}

	ret = spi_claim_bus(spi);
	if (ret) {
		debug("SF: Failed to claim SPI bus: %d\n", ret);
		goto err_claim_bus;
	}

	/* Read the ID codes */
	ret = spi_flash_cmd(spi, CMD_READ_ID, &idcode, sizeof(idcode));
	if (ret)
		goto err_read_id;

	debug("SF: Got idcode %02x %02x %02x %02x %02x\n", idcode[0],
			idcode[1], idcode[2], idcode[3], idcode[4]);

	switch (idcode[0]) {
#ifdef CONFIG_SPI_FLASH_SPANSION
	case 0x01:
		flash = spi_flash_probe_spansion(spi, idcode);
		break;
#endif
#ifdef CONFIG_SPI_FLASH_ATMEL
	case 0x1F:
		flash = spi_flash_probe_atmel(spi, idcode);
		break;
#endif
#ifdef CONFIG_SPI_FLASH_ESMT
    case 0x8c:
        flash = spi_flash_probe_esmt(spi, idcode);
        break;
#endif
#ifdef CONFIG_SPI_FLASH_MACRONIX
	case 0xc2:
		flash = spi_flash_probe_macronix(spi, idcode);
		break;
#endif
#ifdef CONFIG_SPI_FLASH_WINBOND
	case 0xef:
		flash = spi_flash_probe_winbond(spi, idcode);
		break;
#endif
#ifdef CONFIG_SPI_FLASH_GIGABYTE
	case 0xc8:
		flash = spi_flash_probe_gigabyte(spi, idcode);
		break;
#endif
#ifdef CONFIG_SPI_FLASH_STMICRO
	case 0x20:
		flash = spi_flash_probe_stmicro(spi, idcode);
		break;
#endif
#ifdef CONFIG_SPI_FLASH_SST
	case 0xBF:
		flash = spi_flash_probe_sst(spi, idcode);
		break;
#endif
	default:
		debug("SF: Unsupported manufacturer %02X\n", idcode[0]);
		flash = NULL;
		break;
	}

	if (!flash)
		goto err_manufacturer_probe;

	spi_release_bus(spi);

	return flash;

err_manufacturer_probe:
err_read_id:
	spi_release_bus(spi);
err_claim_bus:
	spi_free_slave(spi);
	return NULL;
}

Пример #2

Файл: spi_flash_aml.c Проект: JokeLook/dbstar

struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
		unsigned int max_hz, unsigned int spi_mode)
{
	struct spi_slave *spi;
	struct spi_flash *flash;
	int ret;
	u8 idcode[3];

	spi = spi_setup_slave(bus, cs, max_hz, spi_mode);
	if (!spi) {
		debug("SF: Failed to set up slave\n");
		return NULL;
	}

	ret = spi_claim_bus(spi);
	if (ret) {
		debug("SF: Failed to claim SPI bus: %d\n", ret);
		goto err_claim_bus;
	}

																				/* Read the ID codes */
	ret=spi_flash_cmd(spi,1<<SPI_FLASH_RDID,&idcode, sizeof(idcode));
	if (ret)
		goto err_read_id;

	debug("SF: Got idcode %02x %02x %02x\n", idcode[0],
			idcode[1], idcode[2]);

	switch (idcode[0]) {

#ifdef CONFIG_SPI_FLASH_ESMT
    case 0x8c:
        flash = spi_flash_probe_esmt(spi, idcode);
        break;
#endif

#ifdef CONFIG_SPI_FLASH_MACRONIX
	case 0xc2:
		flash=spi_flash_probe_mxic(spi,idcode);
		break;
#endif
#ifdef CONFIG_SPI_FLASH_SST
	case 0xbf:
		flash=spi_flash_probe_sst(spi,idcode);
		break;
#endif

#ifdef CONFIG_SPI_FLASH_SPANSION
	case 0x01:
		flash = spi_flash_probe_spansion(spi, idcode);
		break;
#endif
#ifdef CONFIG_SPI_FLASH_ATMEL
	case 0x1F:
		flash = spi_flash_probe_atmel(spi, idcode);
		break;
#endif
#ifdef CONFIG_SPI_FLASH_WINBOND
	case 0xef:
		flash = spi_flash_probe_winbond(spi, idcode);
		break;
#endif
#ifdef CONFIG_SPI_FLASH_STMICRO
	case 0x20:
		flash = spi_flash_probe_stmicro(spi, idcode);
		break;
#endif
#ifdef CONFIG_SPI_FLASH_EON:
    case 0x1c:
        flash = spi_flash_probe_eon(spi, idcode);
        break;
#endif
	default:
		debug("SF: Unsupported manufacturer %02X\n", idcode[0]);
		flash = NULL;
		break;
	}

	if (!flash)
		goto err_manufacturer_probe;
#ifdef SPI_WRITE_PROTECT
        if(spi_check_write_protect())
             printf("\nSPI NOR Flash have write protect!!!\n");
        else{
             printf("\nSPI NOR Flash NO write protect!!!, So I will enable it...\n");
             spi_enable_write_protect();
            }
#endif
	spi_release_bus(spi);

	return flash;

err_manufacturer_probe:
err_read_id:
	spi_release_bus(spi);
err_claim_bus:
	spi_free_slave(spi);
	return NULL;
}