Commit 70e2e976 authored Aug 23, 2013 by Sourav Poddar Committed by Mark Brown Aug 23, 2013

spi/qspi: Add dual/quad spi read support

Support for multiple lines in SPI framework has been picked[1].
[1]: http://comments.gmane.org/gmane.linux.kernel.spi.devel/14420



Hence, adapting ti qspi driver to support multiple data lines for read.

Signed-off-by: Sourav Poddar <sourav.poddar@ti.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

parent 21e34a33

drivers/spi/spi-ti-qspi.c

+12 −1

Original line number	Diff line number	Diff line
		@@ -267,7 +267,18 @@ static int qspi_read_msg(struct ti_qspi qspi, struct spi_transfer t)
		u8 *rxbuf;

		rxbuf = t->rx_buf;
		cmd = qspi->cmd \| QSPI_RD_SNGL;
		cmd = qspi->cmd;
		switch (t->rx_nbits) {
		case SPI_NBITS_DUAL:
		cmd \|= QSPI_RD_DUAL;
		break;
		case SPI_NBITS_QUAD:
		cmd \|= QSPI_RD_QUAD;
		break;
		default:
		cmd \|= QSPI_RD_SNGL;
		break;
		}
		count = t->len;
		wlen = t->bits_per_word;