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dm: spi: Remove use of fdtdec GPIO support 

These functions are going away, so use the new uclass support instead.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2015-01-05 20:05:40 -07:00
parent 46927e1ef4
commit 050fb909b6
1 changed files with 27 additions and 33 deletions
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60
drivers/spi/soft_spi.c
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@ -21,10 +21,10 @@
DECLARE_GLOBAL_DATA_PTR;
struct soft_spi_platdata {
struct fdt_gpio_state cs;
struct fdt_gpio_state sclk;
struct fdt_gpio_state mosi;
struct fdt_gpio_state miso;
struct gpio_desc cs;
struct gpio_desc sclk;
struct gpio_desc mosi;
struct gpio_desc miso;
int spi_delay_us;
};
@ -35,9 +35,8 @@ struct soft_spi_priv {
static int soft_spi_scl(struct udevice *dev, int bit)
{
struct soft_spi_platdata *plat = dev->platdata;
struct soft_spi_priv *priv = dev_get_priv(dev);
gpio_set_value(plat->sclk.gpio, priv->mode & SPI_CPOL ? bit : !bit);
dm_gpio_set_value(&plat->sclk, bit);
return 0;
}
@ -46,7 +45,7 @@ static int soft_spi_sda(struct udevice *dev, int bit)
{
struct soft_spi_platdata *plat = dev->platdata;
gpio_set_value(plat->mosi.gpio, bit);
dm_gpio_set_value(&plat->mosi, bit);
return 0;
}
@ -54,11 +53,10 @@ 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 soft_spi_priv *priv = dev_get_priv(dev);
gpio_set_value(plat->cs.gpio, !(priv->mode & SPI_CS_HIGH));
gpio_set_value(plat->sclk.gpio, priv->mode & SPI_CPOL);
gpio_set_value(plat->cs.gpio, priv->mode & SPI_CS_HIGH);
dm_gpio_set_value(&plat->cs, 0);
dm_gpio_set_value(&plat->sclk, 0);
dm_gpio_set_value(&plat->cs, 1);
return 0;
}
@ -66,9 +64,8 @@ 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 soft_spi_priv *priv = dev_get_priv(dev);
gpio_set_value(plat->cs.gpio, !(priv->mode & SPI_CS_HIGH));
dm_gpio_set_value(&plat->cs, 0);
return 0;
}
@ -109,7 +106,6 @@ static int soft_spi_xfer(struct udevice *dev, unsigned int bitlen,
uchar tmpdout = 0;
const u8 *txd = dout;
u8 *rxd = din;
int cpol = priv->mode & SPI_CPOL;
int cpha = priv->mode & SPI_CPHA;
unsigned int j;
@ -137,19 +133,19 @@ static int soft_spi_xfer(struct udevice *dev, unsigned int bitlen,
}
if (!cpha)
soft_spi_scl(dev, !cpol);
soft_spi_scl(dev, 0);
soft_spi_sda(dev, tmpdout & 0x80);
udelay(plat->spi_delay_us);
if (cpha)
soft_spi_scl(dev, !cpol);
soft_spi_scl(dev, 0);
else
soft_spi_scl(dev, cpol);
soft_spi_scl(dev, 1);
tmpdin <<= 1;
tmpdin |= gpio_get_value(plat->miso.gpio);
tmpdin |= dm_gpio_get_value(&plat->miso);
tmpdout <<= 1;
udelay(plat->spi_delay_us);
if (cpha)
soft_spi_scl(dev, cpol);
soft_spi_scl(dev, 1);
}
/*
* If the number of bits isn't a multiple of 8, shift the last
@ -205,11 +201,6 @@ static int soft_spi_ofdata_to_platdata(struct udevice *dev)
const void *blob = gd->fdt_blob;
int node = dev->of_offset;
if (fdtdec_decode_gpio(blob, node, "cs-gpio", &plat->cs) ||
fdtdec_decode_gpio(blob, node, "sclk-gpio", &plat->sclk) ||
fdtdec_decode_gpio(blob, node, "mosi-gpio", &plat->mosi) ||
fdtdec_decode_gpio(blob, node, "miso-gpio", &plat->miso))
return -EINVAL;
plat->spi_delay_us = fdtdec_get_int(blob, node, "spi-delay-us", 0);
return 0;
@ -219,16 +210,19 @@ static int soft_spi_probe(struct udevice *dev)
{
struct spi_slave *slave = dev_get_parentdata(dev);
struct soft_spi_platdata *plat = dev->platdata;
int cs_flags, clk_flags;
gpio_request(plat->cs.gpio, "soft_spi_cs");
gpio_request(plat->sclk.gpio, "soft_spi_sclk");
gpio_request(plat->mosi.gpio, "soft_spi_mosi");
gpio_request(plat->miso.gpio, "soft_spi_miso");
gpio_direction_output(plat->sclk.gpio, slave->mode & SPI_CPOL);
gpio_direction_output(plat->mosi.gpio, 1);
gpio_direction_input(plat->miso.gpio);
gpio_direction_output(plat->cs.gpio, !(slave->mode & SPI_CS_HIGH));
cs_flags = (slave->mode & SPI_CS_HIGH) ? 0 : GPIOD_ACTIVE_LOW;
clk_flags = (slave->mode & SPI_CPOL) ? GPIOD_ACTIVE_LOW : 0;
if (gpio_request_by_name(dev, "cs-gpio", 0, &plat->cs,
GPIOD_IS_OUT | cs_flags) ||
gpio_request_by_name(dev, "sclk-gpio", 0, &plat->sclk,
GPIOD_IS_OUT | clk_flags) ||
gpio_request_by_name(dev, "mosi-gpio", 0, &plat->mosi,
GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE) ||
gpio_request_by_name(dev, "miso-gpio", 0, &plat->miso,
GPIOD_IS_IN))
return -EINVAL;
return 0;
}