dm: gpio: Correct use of -ENODEV in drivers
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 <sjg@chromium.org>
Reported-by: Adam Ford <aford173@gmail.com>
diff --git a/drivers/gpio/adi_gpio2.c b/drivers/gpio/adi_gpio2.c
index 4db08a3..1012f2d 100644
--- a/drivers/gpio/adi_gpio2.c
+++ b/drivers/gpio/adi_gpio2.c
@@ -138,7 +138,7 @@
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 f368946..30bc429 100644
--- a/drivers/gpio/atmel_pio4.c
+++ b/drivers/gpio/atmel_pio4.c
@@ -50,11 +50,11 @@
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 @@
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 @@
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 e60e9d2..7825714 100644
--- a/drivers/gpio/imx_rgpio2p.c
+++ b/drivers/gpio/imx_rgpio2p.c
@@ -168,7 +168,7 @@
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 0c42bd6..c480eba 100644
--- a/drivers/gpio/mxc_gpio.c
+++ b/drivers/gpio/mxc_gpio.c
@@ -304,7 +304,7 @@
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 1ab12f3..7243100 100644
--- a/drivers/gpio/omap_gpio.c
+++ b/drivers/gpio/omap_gpio.c
@@ -307,7 +307,7 @@
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 c5a7e13..deb59e8 100644
--- a/drivers/gpio/tegra186_gpio.c
+++ b/drivers/gpio/tegra186_gpio.c
@@ -181,7 +181,7 @@
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 aa97196..e7ec17f 100644
--- a/drivers/i2c/imx_lpi2c.c
+++ b/drivers/i2c/imx_lpi2c.c
@@ -412,7 +412,7 @@
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 b7bb76c..abf1da2 100644
--- a/drivers/i2c/mxc_i2c.c
+++ b/drivers/i2c/mxc_i2c.c
@@ -176,7 +176,7 @@
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 @@
if (ret < 0)
return ret;
if (ret & I2SR_RX_NO_AK)
- return -ENODEV;
+ return -EREMOTEIO;
return 0;
}
@@ -418,14 +418,14 @@
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 @@
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 @@
!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 931c6de..b46a09a 100644
--- a/drivers/i2c/tegra186_bpmp_i2c.c
+++ b/drivers/i2c/tegra186_bpmp_i2c.c
@@ -94,7 +94,7 @@
"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;