C++ (Cpp) switch_clockの例

コード例 #1

static int spi_set_init_para(struct rtsx_chip *chip)
{
	struct spi_info *spi = &(chip->spi);
	int retval;

	RTSX_WRITE_REG(chip, SPI_CLK_DIVIDER1, 0xFF, (u8)(spi->clk_div >> 8));
	RTSX_WRITE_REG(chip, SPI_CLK_DIVIDER0, 0xFF, (u8)(spi->clk_div));

	retval = switch_clock(chip, spi->spi_clock);
	if (retval != STATUS_SUCCESS)
		TRACE_RET(chip, STATUS_FAIL);

	retval = select_card(chip, SPI_CARD);
	if (retval != STATUS_SUCCESS)
		TRACE_RET(chip, STATUS_FAIL);

	RTSX_WRITE_REG(chip, CARD_CLK_EN, SPI_CLK_EN, SPI_CLK_EN);
	RTSX_WRITE_REG(chip, CARD_OE, SPI_OUTPUT_EN, SPI_OUTPUT_EN);

	wait_timeout(10);

	retval = spi_init(chip);
	if (retval != STATUS_SUCCESS)
		TRACE_RET(chip, STATUS_FAIL);

	return STATUS_SUCCESS;
}

コード例 #2

ファイル: spi.c プロジェクト: acton393/linux

static int spi_set_init_para(struct rtsx_chip *chip)
{
	struct spi_info *spi = &(chip->spi);
	int retval;

	retval = rtsx_write_register(chip, SPI_CLK_DIVIDER1, 0xFF,
				     (u8)(spi->clk_div >> 8));
	if (retval) {
		rtsx_trace(chip);
		return retval;
	}
	retval = rtsx_write_register(chip, SPI_CLK_DIVIDER0, 0xFF,
				     (u8)(spi->clk_div));
	if (retval) {
		rtsx_trace(chip);
		return retval;
	}

	retval = switch_clock(chip, spi->spi_clock);
	if (retval != STATUS_SUCCESS) {
		rtsx_trace(chip);
		return STATUS_FAIL;
	}

	retval = select_card(chip, SPI_CARD);
	if (retval != STATUS_SUCCESS) {
		rtsx_trace(chip);
		return STATUS_FAIL;
	}

	retval = rtsx_write_register(chip, CARD_CLK_EN, SPI_CLK_EN,
				     SPI_CLK_EN);
	if (retval) {
		rtsx_trace(chip);
		return retval;
	}
	retval = rtsx_write_register(chip, CARD_OE, SPI_OUTPUT_EN,
				     SPI_OUTPUT_EN);
	if (retval) {
		rtsx_trace(chip);
		return retval;
	}

	wait_timeout(10);

	retval = spi_init(chip);
	if (retval != STATUS_SUCCESS) {
		rtsx_trace(chip);
		return STATUS_FAIL;
	}

	return STATUS_SUCCESS;
}