C++ (Cpp) falcon_spi_wait 예제들

예제 #1

파일: falcon.c 프로젝트: AdrianHuang/uclinux-robutest

int falcon_spi_cmd(struct efx_nic *efx, const struct efx_spi_device *spi,
		   unsigned int command, int address,
		   const void *in, void *out, size_t len)
{
	bool addressed = (address >= 0);
	bool reading = (out != NULL);
	efx_oword_t reg;
	int rc;

	/* Input validation */
	if (len > FALCON_SPI_MAX_LEN)
		return -EINVAL;
	BUG_ON(!mutex_is_locked(&efx->spi_lock));

	/* Check that previous command is not still running */
	rc = falcon_spi_poll(efx);
	if (rc)
		return rc;

	/* Program address register, if we have an address */
	if (addressed) {
		EFX_POPULATE_OWORD_1(reg, FRF_AB_EE_SPI_HADR_ADR, address);
		efx_writeo(efx, &reg, FR_AB_EE_SPI_HADR);
	}

	/* Program data register, if we have data */
	if (in != NULL) {
		memcpy(&reg, in, len);
		efx_writeo(efx, &reg, FR_AB_EE_SPI_HDATA);
	}

	/* Issue read/write command */
	EFX_POPULATE_OWORD_7(reg,
			     FRF_AB_EE_SPI_HCMD_CMD_EN, 1,
			     FRF_AB_EE_SPI_HCMD_SF_SEL, spi->device_id,
			     FRF_AB_EE_SPI_HCMD_DABCNT, len,
			     FRF_AB_EE_SPI_HCMD_READ, reading,
			     FRF_AB_EE_SPI_HCMD_DUBCNT, 0,
			     FRF_AB_EE_SPI_HCMD_ADBCNT,
			     (addressed ? spi->addr_len : 0),
			     FRF_AB_EE_SPI_HCMD_ENC, command);
	efx_writeo(efx, &reg, FR_AB_EE_SPI_HCMD);

	/* Wait for read/write to complete */
	rc = falcon_spi_wait(efx);
	if (rc)
		return rc;

	/* Read data */
	if (out != NULL) {
		efx_reado(efx, &reg, FR_AB_EE_SPI_HDATA);
		memcpy(out, &reg, len);
	}

	return 0;
}

예제 #2

파일: falcon.c 프로젝트: DirtyDroidX/android_kernel_htc_m8ul

int falcon_spi_cmd(struct efx_nic *efx, const struct efx_spi_device *spi,
		   unsigned int command, int address,
		   const void *in, void *out, size_t len)
{
	bool addressed = (address >= 0);
	bool reading = (out != NULL);
	efx_oword_t reg;
	int rc;

	
	if (len > FALCON_SPI_MAX_LEN)
		return -EINVAL;

	
	rc = falcon_spi_poll(efx);
	if (rc)
		return rc;

	
	if (addressed) {
		EFX_POPULATE_OWORD_1(reg, FRF_AB_EE_SPI_HADR_ADR, address);
		efx_writeo(efx, &reg, FR_AB_EE_SPI_HADR);
	}

	
	if (in != NULL) {
		memcpy(&reg, in, len);
		efx_writeo(efx, &reg, FR_AB_EE_SPI_HDATA);
	}

	
	EFX_POPULATE_OWORD_7(reg,
			     FRF_AB_EE_SPI_HCMD_CMD_EN, 1,
			     FRF_AB_EE_SPI_HCMD_SF_SEL, spi->device_id,
			     FRF_AB_EE_SPI_HCMD_DABCNT, len,
			     FRF_AB_EE_SPI_HCMD_READ, reading,
			     FRF_AB_EE_SPI_HCMD_DUBCNT, 0,
			     FRF_AB_EE_SPI_HCMD_ADBCNT,
			     (addressed ? spi->addr_len : 0),
			     FRF_AB_EE_SPI_HCMD_ENC, command);
	efx_writeo(efx, &reg, FR_AB_EE_SPI_HCMD);

	
	rc = falcon_spi_wait(efx);
	if (rc)
		return rc;

	
	if (out != NULL) {
		efx_reado(efx, &reg, FR_AB_EE_SPI_HDATA);
		memcpy(out, &reg, len);
	}

	return 0;
}