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dm: spi: soft_spi bug fix

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When doing xfer, should use device->parent, but not device
When doing bit xfer, should use "!!(tmpdout & 0x80)", but not
"(tmpdout & 0x80)"

Signed-off-by: Peng Fan <van.freenix@gmail.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Jagan Teki <jteki@openedev.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Peng Fan 2016-05-03 10:02:20 +08:00 committed by Simon Glass
parent 35732098db
commit b6d54d5273
1 changed files with 12 additions and 7 deletions
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19
drivers/spi/soft_spi.c
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@ -34,7 +34,8 @@ struct soft_spi_priv {
static int soft_spi_scl(struct udevice *dev, int bit)
{
struct soft_spi_platdata *plat = dev->platdata;
struct udevice *bus = dev_get_parent(dev);
struct soft_spi_platdata *plat = dev_get_platdata(bus);
dm_gpio_set_value(&plat->sclk, bit);
@ -43,7 +44,8 @@ static int soft_spi_scl(struct udevice *dev, int bit)
static int soft_spi_sda(struct udevice *dev, int bit)
{
struct soft_spi_platdata *plat = dev->platdata;
struct udevice *bus = dev_get_parent(dev);
struct soft_spi_platdata *plat = dev_get_platdata(bus);
dm_gpio_set_value(&plat->mosi, bit);
@ -52,7 +54,8 @@ static int soft_spi_sda(struct udevice *dev, int bit)
static int soft_spi_cs_activate(struct udevice *dev)
{
struct soft_spi_platdata *plat = dev->platdata;
struct udevice *bus = dev_get_parent(dev);
struct soft_spi_platdata *plat = dev_get_platdata(bus);
dm_gpio_set_value(&plat->cs, 0);
dm_gpio_set_value(&plat->sclk, 0);
@ -63,7 +66,8 @@ static int soft_spi_cs_activate(struct udevice *dev)
static int soft_spi_cs_deactivate(struct udevice *dev)
{
struct soft_spi_platdata *plat = dev->platdata;
struct udevice *bus = dev_get_parent(dev);
struct soft_spi_platdata *plat = dev_get_platdata(bus);
dm_gpio_set_value(&plat->cs, 0);
@ -100,8 +104,9 @@ static int soft_spi_release_bus(struct udevice *dev)
static int soft_spi_xfer(struct udevice *dev, unsigned int bitlen,
const void *dout, void *din, unsigned long flags)
{
struct soft_spi_priv *priv = dev_get_priv(dev);
struct soft_spi_platdata *plat = dev->platdata;
struct udevice *bus = dev_get_parent(dev);
struct soft_spi_priv *priv = dev_get_priv(bus);
struct soft_spi_platdata *plat = dev_get_platdata(bus);
uchar tmpdin = 0;
uchar tmpdout = 0;
const u8 *txd = dout;
@ -134,7 +139,7 @@ static int soft_spi_xfer(struct udevice *dev, unsigned int bitlen,
if (!cpha)
soft_spi_scl(dev, 0);
soft_spi_sda(dev, tmpdout & 0x80);
soft_spi_sda(dev, !!(tmpdout & 0x80));
udelay(plat->spi_delay_us);
if (cpha)
soft_spi_scl(dev, 0);