In U-Boot -ENODEV means that there is no device. When there is a problem
with the device, drivers should return an error like -ENXIO or -EREMOTEIO.
When the device tree properties cannot be read correct , they should
return -EINVAL.
Update various GPIO drivers to follow this rule, to help with consistency
for future driver writers.
Signed-off-by: Simon Glass <s...@chromium.org>
Reported-by: Adam Ford <aford...@gmail.com>
---
drivers/gpio/adi_gpio2.c | 2 +-
drivers/gpio/atmel_pio4.c | 12 ++++++------
drivers/gpio/imx_rgpio2p.c | 2 +-
drivers/gpio/mxc_gpio.c | 2 +-
drivers/gpio/omap_gpio.c | 2 +-
drivers/gpio/tegra186_gpio.c | 2 +-
drivers/i2c/imx_lpi2c.c | 2 +-
drivers/i2c/mxc_i2c.c | 12 ++++++------
drivers/i2c/tegra186_bpmp_i2c.c | 2 +-
9 files changed, 19 insertions(+), 19 deletions(-)
diff --git a/drivers/gpio/adi_gpio2.c b/drivers/gpio/adi_gpio2.c
index 4db08a344a..1012f2d8eb 100644
--- a/drivers/gpio/adi_gpio2.c
+++ b/drivers/gpio/adi_gpio2.c
@@ -138,7 +138,7 @@ int peripheral_request(unsigned short per, const char
*label)
return 0;
if (!(per & P_DEFINED))
- return -ENODEV;
+ return -EINVAL;
BUG_ON(ident >= MAX_RESOURCES);
diff --git a/drivers/gpio/atmel_pio4.c b/drivers/gpio/atmel_pio4.c
index f3689467f0..30bc4296e3 100644
--- a/drivers/gpio/atmel_pio4.c
+++ b/drivers/gpio/atmel_pio4.c
@@ -50,11 +50,11 @@ static int atmel_pio4_config_io_func(u32 port, u32 pin,
u32 reg, mask;
if (pin >= ATMEL_PIO_NPINS_PER_BANK)
- return -ENODEV;
+ return -EINVAL;
port_base = atmel_pio4_port_base(port);
if (!port_base)
- return -ENODEV;
+ return -EINVAL;
mask = 1 << pin;
reg = func;
@@ -128,11 +128,11 @@ int atmel_pio4_set_pio_output(u32 port, u32 pin, u32
value)
u32 reg, mask;
if (pin >= ATMEL_PIO_NPINS_PER_BANK)
- return -ENODEV;
+ return -EINVAL;
port_base = atmel_pio4_port_base(port);
if (!port_base)
- return -ENODEV;
+ return -EINVAL;
mask = 0x01 << pin;
reg = ATMEL_PIO_CFGR_FUNC_GPIO | ATMEL_PIO_DIR_MASK;
@@ -154,11 +154,11 @@ int atmel_pio4_get_pio_input(u32 port, u32 pin)
u32 reg, mask;
if (pin >= ATMEL_PIO_NPINS_PER_BANK)
- return -ENODEV;
+ return -EINVAL;
port_base = atmel_pio4_port_base(port);
if (!port_base)
- return -ENODEV;
+ return -EINVAL;
mask = 0x01 << pin;
reg = ATMEL_PIO_CFGR_FUNC_GPIO;
diff --git a/drivers/gpio/imx_rgpio2p.c b/drivers/gpio/imx_rgpio2p.c
index e60e9d2a01..7825714e80 100644
--- a/drivers/gpio/imx_rgpio2p.c
+++ b/drivers/gpio/imx_rgpio2p.c
@@ -168,7 +168,7 @@ static int imx_rgpio2p_bind(struct udevice *dev)
addr = devfdt_get_addr_index(dev, 1);
if (addr == FDT_ADDR_T_NONE)
- return -ENODEV;
+ return -EINVAL;
/*
* TODO:
diff --git a/drivers/gpio/mxc_gpio.c b/drivers/gpio/mxc_gpio.c
index 0c42bd6cec..c480eba940 100644
--- a/drivers/gpio/mxc_gpio.c
+++ b/drivers/gpio/mxc_gpio.c
@@ -304,7 +304,7 @@ static int mxc_gpio_bind(struct udevice *dev)
addr = devfdt_get_addr(dev);
if (addr == FDT_ADDR_T_NONE)
- return -ENODEV;
+ return -EINVAL;
/*
* TODO:
diff --git a/drivers/gpio/omap_gpio.c b/drivers/gpio/omap_gpio.c
index 5c55e6929e..91a3b4672a 100644
--- a/drivers/gpio/omap_gpio.c
+++ b/drivers/gpio/omap_gpio.c
@@ -304,7 +304,7 @@ static int omap_gpio_bind(struct udevice *dev)
base_addr = devfdt_get_addr(dev);
if (base_addr == FDT_ADDR_T_NONE)
- return -ENODEV;
+ return -EINVAL;
/*
* TODO:
diff --git a/drivers/gpio/tegra186_gpio.c b/drivers/gpio/tegra186_gpio.c
index c5a7e13cce..deb59e8b32 100644
--- a/drivers/gpio/tegra186_gpio.c
+++ b/drivers/gpio/tegra186_gpio.c
@@ -181,7 +181,7 @@ static int tegra186_gpio_bind(struct udevice *parent)
regs = (uint32_t *)devfdt_get_addr_name(parent, "gpio");
if (regs == (uint32_t *)FDT_ADDR_T_NONE)
- return -ENODEV;
+ return -EINVAL;
for (port = 0; port < ctlr_data->port_count; port++) {
struct tegra186_gpio_platdata *plat;
diff --git a/drivers/i2c/imx_lpi2c.c b/drivers/i2c/imx_lpi2c.c
index aa97196e23..e7ec17fe9e 100644
--- a/drivers/i2c/imx_lpi2c.c
+++ b/drivers/i2c/imx_lpi2c.c
@@ -412,7 +412,7 @@ static int imx_lpi2c_probe(struct udevice *bus)
addr = devfdt_get_addr(bus);
if (addr == FDT_ADDR_T_NONE)
- return -ENODEV;
+ return -EINVAL;
i2c_bus->base = addr;
i2c_bus->index = bus->seq;
diff --git a/drivers/i2c/mxc_i2c.c b/drivers/i2c/mxc_i2c.c
index b7bb76c0ed..abf1da2ae3 100644
--- a/drivers/i2c/mxc_i2c.c
+++ b/drivers/i2c/mxc_i2c.c
@@ -176,7 +176,7 @@ static int bus_i2c_set_bus_speed(struct mxc_i2c_bus
*i2c_bus, int speed)
int reg_shift = quirk ? VF610_I2C_REGSHIFT : IMX_I2C_REGSHIFT;
if (!base)
- return -ENODEV;
+ return -EINVAL;
/* Store divider value */
writeb(idx, base + (IFDR << reg_shift));
@@ -239,7 +239,7 @@ static int tx_byte(struct mxc_i2c_bus *i2c_bus, u8 byte)
if (ret < 0)
return ret;
if (ret & I2SR_RX_NO_AK)
- return -ENODEV;
+ return -EREMOTEIO;
return 0;
}
@@ -418,14 +418,14 @@ static int i2c_init_transfer(struct mxc_i2c_bus *i2c_bus,
u8 chip,
VF610_I2C_REGSHIFT : IMX_I2C_REGSHIFT;
if (!i2c_bus->base)
- return -ENODEV;
+ return -EINVAL;
for (retry = 0; retry < 3; retry++) {
ret = i2c_init_transfer_(i2c_bus, chip, addr, alen);
if (ret >= 0)
return 0;
i2c_imx_stop(i2c_bus);
- if (ret == -ENODEV)
+ if (ret == -EREMOTEIO)
return ret;
printf("%s: failed for chip 0x%x retry=%d\n", __func__, chip,
@@ -754,7 +754,7 @@ static int mxc_i2c_probe(struct udevice *bus)
addr = devfdt_get_addr(bus);
if (addr == FDT_ADDR_T_NONE)
- return -ENODEV;
+ return -EINVAL;
i2c_bus->base = addr;
i2c_bus->index = bus->seq;
@@ -783,7 +783,7 @@ static int mxc_i2c_probe(struct udevice *bus)
!dm_gpio_is_valid(&i2c_bus->scl_gpio) |
ret | ret2) {
dev_err(dev, "i2c bus %d at %lu, fail to request
scl/sda gpio\n", bus->seq, i2c_bus->base);
- return -ENODEV;
+ return -EINVAL;
}
}
diff --git a/drivers/i2c/tegra186_bpmp_i2c.c b/drivers/i2c/tegra186_bpmp_i2c.c
index 931c6de508..b46a09a4e0 100644
--- a/drivers/i2c/tegra186_bpmp_i2c.c
+++ b/drivers/i2c/tegra186_bpmp_i2c.c
@@ -94,7 +94,7 @@ static int tegra186_bpmp_i2c_probe(struct udevice *dev)
"nvidia,bpmp-bus-id", U32_MAX);
if (priv->bpmp_bus_id == U32_MAX) {
debug("%s: could not parse nvidia,bpmp-bus-id\n", __func__);
- return -ENODEV;
+ return -EINVAL;
}
return 0;
--
2.14.1.690.gbb1197296e-goog
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