From: Barry Song <[email protected]> When the hardware is controlling the CS, there are some SPI options we are unable to support. So issue a warning in the hopes that the user will change to a SPI mode where we can support things sanely.
Signed-off-by: Barry Song <[email protected]> Signed-off-by: Mike Frysinger <[email protected]> --- drivers/spi/spi_bfin5xx.c | 9 +++++++-- 1 files changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c index 7882afc..21de860 100644 --- a/drivers/spi/spi_bfin5xx.c +++ b/drivers/spi/spi_bfin5xx.c @@ -1040,9 +1040,14 @@ static int bfin_spi_setup(struct spi_device *spi) */ chip->baud = hz_to_spi_baud(spi->max_speed_hz); chip->chip_select_num = spi->chip_select; - if (chip->chip_select_num < MAX_CTRL_CS) + if (chip->chip_select_num < MAX_CTRL_CS) { + if (!(spi->mode & SPI_CPHA)) + dev_warn(&spi->dev, "Warning: SPI CPHA not set:" + " Slave Select not under software control!\n" + " See Documentation/blackfin/bfin-spi-notes.txt"); + chip->flag = (1 << spi->chip_select) << 8; - else + } else chip->cs_gpio = chip->chip_select_num - MAX_CTRL_CS; if (chip->enable_dma && chip->pio_interrupt) { -- 1.7.3.1 ------------------------------------------------------------------------------ Download new Adobe(R) Flash(R) Builder(TM) 4 The new Adobe(R) Flex(R) 4 and Flash(R) Builder(TM) 4 (formerly Flex(R) Builder(TM)) enable the development of rich applications that run across multiple browsers and platforms. Download your free trials today! http://p.sf.net/sfu/adobe-dev2dev _______________________________________________ spi-devel-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/spi-devel-general
