diff options
Diffstat (limited to 'drivers/spi/omap3_spi.c')
| -rw-r--r-- | drivers/spi/omap3_spi.c | 32 |
1 files changed, 15 insertions, 17 deletions
diff --git a/drivers/spi/omap3_spi.c b/drivers/spi/omap3_spi.c index 4169abdef67..ecf54bb7148 100644 --- a/drivers/spi/omap3_spi.c +++ b/drivers/spi/omap3_spi.c @@ -443,9 +443,6 @@ static void spi_reset(struct mcspi *regs) static void _omap3_spi_claim_bus(struct omap3_spi_priv *priv) { unsigned int conf; - - spi_reset(priv->regs); - /* * setup when switching from (reset default) slave mode * to single-channel master mode @@ -480,6 +477,8 @@ int spi_claim_bus(struct spi_slave *slave) { struct omap3_spi_priv *priv = to_omap3_spi(slave); + spi_reset(priv->regs); + _omap3_spi_claim_bus(priv); _omap3_spi_set_wordlen(priv); _omap3_spi_set_mode(priv); @@ -492,8 +491,7 @@ void spi_release_bus(struct spi_slave *slave) { struct omap3_spi_priv *priv = to_omap3_spi(slave); - /* Reset the SPI hardware */ - spi_reset(priv->regs); + writel(OMAP3_MCSPI_MODULCTRL_MS, &priv->regs->modulctrl); } struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs, @@ -590,6 +588,8 @@ static int omap3_spi_claim_bus(struct udevice *dev) struct dm_spi_slave_platdata *slave_plat = dev_get_parent_platdata(dev); priv->cs = slave_plat->cs; + priv->freq = slave_plat->max_hz; + _omap3_spi_claim_bus(priv); return 0; @@ -600,8 +600,7 @@ static int omap3_spi_release_bus(struct udevice *dev) struct udevice *bus = dev->parent; struct omap3_spi_priv *priv = dev_get_priv(bus); - /* Reset the SPI hardware */ - spi_reset(priv->regs); + writel(OMAP3_MCSPI_MODULCTRL_MS, &priv->regs->modulctrl); return 0; } @@ -634,6 +633,9 @@ static int omap3_spi_probe(struct udevice *dev) else priv->pin_dir = MCSPI_PINDIR_D0_IN_D1_OUT; priv->wordlen = SPI_DEFAULT_WORDLEN; + + spi_reset(priv->regs); + return 0; } @@ -648,12 +650,10 @@ static int omap3_spi_xfer(struct udevice *dev, unsigned int bitlen, static int omap3_spi_set_speed(struct udevice *dev, unsigned int speed) { - struct udevice *bus = dev->parent; - struct omap3_spi_priv *priv = dev_get_priv(bus); - struct dm_spi_slave_platdata *slave_plat = dev_get_parent_platdata(dev); - priv->cs = slave_plat->cs; - priv->freq = slave_plat->max_hz; + struct omap3_spi_priv *priv = dev_get_priv(dev); + + priv->freq = speed; _omap3_spi_set_speed(priv); return 0; @@ -661,12 +661,10 @@ static int omap3_spi_set_speed(struct udevice *dev, unsigned int speed) static int omap3_spi_set_mode(struct udevice *dev, uint mode) { - struct udevice *bus = dev->parent; - struct omap3_spi_priv *priv = dev_get_priv(bus); - struct dm_spi_slave_platdata *slave_plat = dev_get_parent_platdata(dev); + struct omap3_spi_priv *priv = dev_get_priv(dev); + + priv->mode = mode; - priv->cs = slave_plat->cs; - priv->mode = slave_plat->mode; _omap3_spi_set_mode(priv); return 0; |