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>

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);
 

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;

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:

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:

drivers/gpio/omap_gpio.c

@@ -307,7 +307,7 @@ 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:

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;

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;

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;
 		}
 	}
 

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;