diff options
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-omap2-mcspi.c | 14 | ||||
| -rw-r--r-- | drivers/spi/spi-orion.c | 10 |
2 files changed, 18 insertions, 6 deletions
diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c index 86d2158946bb..798729eb6689 100644 --- a/drivers/spi/spi-omap2-mcspi.c +++ b/drivers/spi/spi-omap2-mcspi.c @@ -136,6 +136,7 @@ struct omap2_mcspi_cs { void __iomem *base; unsigned long phys; int word_len; + u16 mode; struct list_head node; /* Context save and restore shadow register */ u32 chconf0; @@ -801,6 +802,8 @@ static int omap2_mcspi_setup_transfer(struct spi_device *spi, mcspi_write_chconf0(spi, l); + cs->mode = spi->mode; + dev_dbg(&spi->dev, "setup: speed %d, sample %s edge, clk %s\n", OMAP2_MCSPI_MAX_FREQ >> div, (spi->mode & SPI_CPHA) ? "trailing" : "leading", @@ -871,6 +874,7 @@ static int omap2_mcspi_setup(struct spi_device *spi) return -ENOMEM; cs->base = mcspi->base + spi->chip_select * 0x14; cs->phys = mcspi->phys + spi->chip_select * 0x14; + cs->mode = 0; cs->chconf0 = 0; spi->controller_state = cs; /* Link this to context save list */ @@ -1043,6 +1047,16 @@ static void omap2_mcspi_work(struct omap2_mcspi *mcspi, struct spi_message *m) mcspi_read_cs_reg(spi, OMAP2_MCSPI_MODULCTRL); } + /* + * The slave driver could have changed spi->mode in which case + * it will be different from cs->mode (the current hardware setup). + * If so, set par_override (even though its not a parity issue) so + * omap2_mcspi_setup_transfer will be called to configure the hardware + * with the correct mode on the first iteration of the loop below. + */ + if (spi->mode != cs->mode) + par_override = 1; + omap2_mcspi_set_enable(spi, 0); m->status = status; diff --git a/drivers/spi/spi-orion.c b/drivers/spi/spi-orion.c index 66a5f82cf138..183aa80c9017 100644 --- a/drivers/spi/spi-orion.c +++ b/drivers/spi/spi-orion.c @@ -403,8 +403,6 @@ static int orion_spi_probe(struct platform_device *pdev) struct resource *r; unsigned long tclk_hz; int status = 0; - const u32 *iprop; - int size; master = spi_alloc_master(&pdev->dev, sizeof *spi); if (master == NULL) { @@ -415,10 +413,10 @@ static int orion_spi_probe(struct platform_device *pdev) if (pdev->id != -1) master->bus_num = pdev->id; if (pdev->dev.of_node) { - iprop = of_get_property(pdev->dev.of_node, "cell-index", - &size); - if (iprop && size == sizeof(*iprop)) - master->bus_num = *iprop; + u32 cell_index; + if (!of_property_read_u32(pdev->dev.of_node, "cell-index", + &cell_index)) + master->bus_num = cell_index; } /* we support only mode 0, and no options */ |