Esempi in C++ (Cpp) per pmic_spi_probe

Esempio n. 1

File: power_spi.c Progetto: 0s4l/u-boot-xlnx

static u32 pmic_reg(struct pmic *p, u32 reg, u32 *val, u32 write)
{
	u32 pmic_tx, pmic_rx;
	u32 tmp;

	if (!slave) {
		slave = pmic_spi_probe(p);

		if (!slave)
			return -1;
	}

	if (check_reg(p, reg))
		return -1;

	if (spi_claim_bus(slave))
		return -1;

	pmic_tx = p->hw.spi.prepare_tx(reg, val, write);

	tmp = cpu_to_be32(pmic_tx);

	if (spi_xfer(slave, pmic_spi_bitlen, &tmp, &pmic_rx,
			pmic_spi_flags)) {
		spi_release_bus(slave);
		return -1;
	}

	if (write) {
		pmic_tx = p->hw.spi.prepare_tx(reg, val, 0);
		tmp = cpu_to_be32(pmic_tx);
		if (spi_xfer(slave, pmic_spi_bitlen, &tmp, &pmic_rx,
			pmic_spi_flags)) {
			spi_release_bus(slave);
			return -1;
		}
	}

	spi_release_bus(slave);
	*val = cpu_to_be32(pmic_rx);

	return 0;
}

Esempio n. 2

File: fsl_pmic.c Progetto: Medvedroid/OT_903D-kernel-2.6.35.7

u32 pmic_reg(u32 reg, u32 val, u32 write)
{
	u32 pmic_tx, pmic_rx;

	if (!slave) {
		slave = pmic_spi_probe();

		if (!slave)
			return -1;
	}

	if (reg > 63 || write > 1) {
		printf("<reg num> = %d is invalid. Should be less then 63\n",
			reg);
		return -1;
	}

	if (spi_claim_bus(slave))
		return -1;

	pmic_tx = (write << 31) | (reg << 25) | (val & 0x00FFFFFF);

	if (spi_xfer(slave, 4 << 3, &pmic_tx, &pmic_rx,
			SPI_XFER_BEGIN | SPI_XFER_END)) {
		spi_release_bus(slave);
		return -1;
	}

	if (write) {
		pmic_tx &= ~(1 << 31);
		if (spi_xfer(slave, 4 << 3, &pmic_tx, &pmic_rx,
			SPI_XFER_BEGIN | SPI_XFER_END)) {
			spi_release_bus(slave);
			return -1;
		}
	}

	spi_release_bus(slave);
	return pmic_rx;
}