static int i2c_arbitrator_remove(struct udevice *dev)
{
struct i2c_arbitrator_priv *priv = dev_get_priv(dev);
dm_gpio_free(dev, &priv->ap_claim);
dm_gpio_free(dev, &priv->ec_claim);
return 0;
}
static int i2c_arbitrator_probe(struct udevice *dev)
{
struct i2c_arbitrator_priv *priv = dev_get_priv(dev);
const void *blob = gd->fdt_blob;
int node = dev->of_offset;
int ret;
debug("%s: %s\n", __func__, dev->name);
priv->slew_delay_us = fdtdec_get_int(blob, node, "slew-delay-us", 0);
priv->wait_retry_ms = fdtdec_get_int(blob, node, "wait-retry-us", 0) /
1000;
priv->wait_free_ms = fdtdec_get_int(blob, node, "wait-free-us", 0) /
1000;
ret = gpio_request_by_name(dev, "our-claim-gpio", 0, &priv->ap_claim,
GPIOD_IS_OUT);
if (ret)
goto err;
ret = gpio_request_by_name(dev, "their-claim-gpios", 0, &priv->ec_claim,
GPIOD_IS_IN);
if (ret)
goto err_ec_gpio;
return 0;
err_ec_gpio:
dm_gpio_free(dev, &priv->ap_claim);
err:
debug("%s: ret=%d\n", __func__, ret);
return ret;
}
int gpio_free_list(struct udevice *dev, struct gpio_desc *desc, int count)
{
int i;
/* For now, we don't do any checking of dev */
for (i = 0; i < count; i++)
dm_gpio_free(dev, &desc[i]);
return 0;
}
static int pic32_eth_remove(struct udevice *dev)
{
struct pic32eth_dev *priv = dev_get_priv(dev);
struct mii_dev *bus;
dm_gpio_free(dev, &priv->rst_gpio);
phy_shutdown(priv->phydev);
free(priv->phydev);
bus = miiphy_get_dev_by_name(PIC32_MDIO_NAME);
mdio_unregister(bus);
mdio_free(bus);
iounmap(priv->ectl_regs);
return 0;
}
static int led_gpio_remove(struct udevice *dev)
{
/*
* The GPIO driver may have already been removed. We will need to
* address this more generally.
*/
#ifndef CONFIG_SANDBOX
struct led_gpio_priv *priv = dev_get_priv(dev);
if (dm_gpio_is_valid(&priv->gpio))
dm_gpio_free(dev, &priv->gpio);
#endif
return 0;
}
/* Somewhat torturous method */
static int get_backlight_info(const void *blob, struct gpio_desc *vdd,
struct gpio_desc *enable, int *pwmp)
{
int sor, panel, backlight, power;
const u32 *prop;
int len;
int ret;
*pwmp = 0;
sor = fdtdec_next_compatible(blob, 0, COMPAT_NVIDIA_TEGRA124_SOR);
if (sor < 0)
return -ENOENT;
panel = fdtdec_lookup_phandle(blob, sor, "nvidia,panel");
if (panel < 0)
return -ENOENT;
backlight = fdtdec_lookup_phandle(blob, panel, "backlight");
if (backlight < 0)
return -ENOENT;
ret = gpio_request_by_name_nodev(blob, backlight, "enable-gpios", 0,
enable, GPIOD_IS_OUT);
if (ret)
return ret;
prop = fdt_getprop(blob, backlight, "pwms", &len);
if (!prop || len != 3 * sizeof(u32))
return -EINVAL;
*pwmp = fdt32_to_cpu(prop[1]);
power = fdtdec_lookup_phandle(blob, backlight, "power-supply");
if (power < 0)
return -ENOENT;
ret = gpio_request_by_name_nodev(blob, power, "gpio", 0, vdd,
GPIOD_IS_OUT);
if (ret)
goto err;
return 0;
err:
dm_gpio_free(NULL, enable);
return ret;
}
/* Test that we can find GPIOs using phandles */
static int dm_test_gpio_phandles(struct dm_test_state *dms)
{
struct gpio_desc desc, desc_list[8], desc_list2[8];
struct udevice *dev, *gpio_a, *gpio_b;
ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
ut_asserteq_str("a-test", dev->name);
ut_assertok(gpio_request_by_name(dev, "test-gpios", 1, &desc, 0));
ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio_a));
ut_assertok(uclass_get_device(UCLASS_GPIO, 2, &gpio_b));
ut_asserteq_str("base-gpios", gpio_a->name);
ut_asserteq(true, !!device_active(gpio_a));
ut_asserteq_ptr(gpio_a, desc.dev);
ut_asserteq(4, desc.offset);
/* GPIOF_INPUT is the sandbox GPIO driver default */
ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_a, 4, NULL));
ut_assertok(dm_gpio_free(dev, &desc));
ut_asserteq(-ENOENT, gpio_request_by_name(dev, "test-gpios", 3, &desc,
0));
ut_asserteq_ptr(NULL, desc.dev);
ut_asserteq(desc.offset, 0);
ut_asserteq(-ENOENT, gpio_request_by_name(dev, "test-gpios", 5, &desc,
0));
/* Last GPIO is ignord as it comes after <0> */
ut_asserteq(3, gpio_request_list_by_name(dev, "test-gpios", desc_list,
ARRAY_SIZE(desc_list), 0));
ut_asserteq(-EBUSY, gpio_request_list_by_name(dev, "test-gpios",
desc_list2,
ARRAY_SIZE(desc_list2),
0));
ut_assertok(gpio_free_list(dev, desc_list, 3));
ut_asserteq(3, gpio_request_list_by_name(dev, "test-gpios", desc_list,
ARRAY_SIZE(desc_list),
GPIOD_IS_OUT |
GPIOD_IS_OUT_ACTIVE));
ut_asserteq_ptr(gpio_a, desc_list[0].dev);
ut_asserteq(1, desc_list[0].offset);
ut_asserteq_ptr(gpio_a, desc_list[1].dev);
ut_asserteq(4, desc_list[1].offset);
ut_asserteq_ptr(gpio_b, desc_list[2].dev);
ut_asserteq(5, desc_list[2].offset);
ut_asserteq(1, dm_gpio_get_value(desc_list));
ut_assertok(gpio_free_list(dev, desc_list, 3));
ut_asserteq(6, gpio_request_list_by_name(dev, "test2-gpios", desc_list,
ARRAY_SIZE(desc_list), 0));
/* This was set to output previously, so still will be */
ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_a, 1, NULL));
/* Active low should invert the input value */
ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_b, 6, NULL));
ut_asserteq(1, dm_gpio_get_value(&desc_list[2]));
ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_b, 7, NULL));
ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_b, 8, NULL));
ut_asserteq(0, dm_gpio_get_value(&desc_list[4]));
ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_b, 9, NULL));
ut_asserteq(1, dm_gpio_get_value(&desc_list[5]));
return 0;
}
