dm: spi: Correct SPI claim/release_bus() methods

These methods should be passed a slave device, not a bus. This matches the
old SPI interface. It is important to know which device is claiming the bus
so passing a bus is not that useful.

Reported-by: Haikun Wang <haikun.wang@freescale.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Peng Fan <Peng.Fan@freescale.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>

diff --git a/drivers/spi/exynos_spi.c b/drivers/spi/exynos_spi.c
index a46d8c1..67f6b2d 100644 (file)
--- a/drivers/spi/exynos_spi.c
+++ b/drivers/spi/exynos_spi.c
@@ -296,8 +296,9 @@ static int exynos_spi_probe(struct udevice *bus)
        return 0;
 }
 
-static int exynos_spi_claim_bus(struct udevice *bus)
+static int exynos_spi_claim_bus(struct udevice *dev)
 {
+       struct udevice *bus = dev->parent;
        struct exynos_spi_priv *priv = dev_get_priv(bus);
 
        exynos_pinmux_config(priv->periph_id, PINMUX_FLAG_NONE);
@@ -308,8 +309,9 @@ static int exynos_spi_claim_bus(struct udevice *bus)
        return 0;
 }
 
-static int exynos_spi_release_bus(struct udevice *bus)
+static int exynos_spi_release_bus(struct udevice *dev)
 {
+       struct udevice *bus = dev->parent;
        struct exynos_spi_priv *priv = dev_get_priv(bus);
 
        spi_flush_fifo(priv->regs);

diff --git a/drivers/spi/spi-uclass.c b/drivers/spi/spi-uclass.c
index 866c48f..83fe8e0 100644 (file)
--- a/drivers/spi/spi-uclass.c
+++ b/drivers/spi/spi-uclass.c
@@ -67,7 +67,7 @@ int spi_claim_bus(struct spi_slave *slave)
        if (ret)
                return ret;
 
-       return ops->claim_bus ? ops->claim_bus(bus) : 0;
+       return ops->claim_bus ? ops->claim_bus(dev) : 0;
 }
 
 void spi_release_bus(struct spi_slave *slave)
@@ -77,7 +77,7 @@ void spi_release_bus(struct spi_slave *slave)
        struct dm_spi_ops *ops = spi_get_ops(bus);
 
        if (ops->release_bus)
-               ops->release_bus(bus);
+               ops->release_bus(dev);
 }
 
 int spi_xfer(struct spi_slave *slave, unsigned int bitlen,

diff --git a/drivers/spi/tegra114_spi.c b/drivers/spi/tegra114_spi.c
index 53ff9ea..4bec663 100644 (file)
--- a/drivers/spi/tegra114_spi.c
+++ b/drivers/spi/tegra114_spi.c
@@ -153,8 +153,9 @@ static int tegra114_spi_probe(struct udevice *bus)
        return 0;
 }
 
-static int tegra114_spi_claim_bus(struct udevice *bus)
+static int tegra114_spi_claim_bus(struct udevice *dev)
 {
+       struct udevice *bus = dev->parent;
        struct tegra114_spi_priv *priv = dev_get_priv(bus);
        struct spi_regs *regs = priv->regs;
 

diff --git a/drivers/spi/tegra20_sflash.c b/drivers/spi/tegra20_sflash.c
index 78c74cd..82c1b84 100644 (file)
--- a/drivers/spi/tegra20_sflash.c
+++ b/drivers/spi/tegra20_sflash.c
@@ -125,8 +125,9 @@ static int tegra20_sflash_probe(struct udevice *bus)
        return 0;
 }
 
-static int tegra20_sflash_claim_bus(struct udevice *bus)
+static int tegra20_sflash_claim_bus(struct udevice *dev)
 {
+       struct udevice *bus = dev->parent;
        struct tegra20_sflash_priv *priv = dev_get_priv(bus);
        struct spi_regs *regs = priv->regs;
        u32 reg;

diff --git a/drivers/spi/tegra20_slink.c b/drivers/spi/tegra20_slink.c
index 597d6ad..f6fb89b 100644 (file)
--- a/drivers/spi/tegra20_slink.c
+++ b/drivers/spi/tegra20_slink.c
@@ -141,8 +141,9 @@ static int tegra30_spi_probe(struct udevice *bus)
        return 0;
 }
 
-static int tegra30_spi_claim_bus(struct udevice *bus)
+static int tegra30_spi_claim_bus(struct udevice *dev)
 {
+       struct udevice *bus = dev->parent;
        struct tegra30_spi_priv *priv = dev_get_priv(bus);
        struct spi_regs *regs = priv->regs;
        u32 reg;

diff --git a/include/spi.h b/include/spi.h
index 7829063..9495ca5 100644 (file)
--- a/include/spi.h
+++ b/include/spi.h
@@ -386,12 +386,12 @@ struct dm_spi_ops {
         * allowed to claim the same bus for several slaves without releasing
         * the bus in between.
         *
-        * @bus:        The SPI slave
+        * @dev:        The SPI slave
         *
         * Returns: 0 if the bus was claimed successfully, or a negative value
         * if it wasn't.
         */
-       int (*claim_bus)(struct udevice *bus);
+       int (*claim_bus)(struct udevice *dev);
 
        /**
         * Release the SPI bus
@@ -400,9 +400,9 @@ struct dm_spi_ops {
         * all transfers have finished. It may disable any SPI hardware as
         * appropriate.
         *
-        * @bus:        The SPI slave
+        * @dev:        The SPI slave
         */
-       int (*release_bus)(struct udevice *bus);
+       int (*release_bus)(struct udevice *dev);
 
        /**
         * Set the word length for SPI transactions
@@ -414,7 +414,7 @@ struct dm_spi_ops {
         *
         * Returns: 0 on success, -ve on failure.
         */
-       int (*set_wordlen)(struct udevice *bus, unsigned int wordlen);
+       int (*set_wordlen)(struct udevice *dev, unsigned int wordlen);
 
        /**
         * SPI transfer