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https://github.com/brain-hackers/u-boot-brain
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gpio: add function check_dir_flags
Add a dir flags validity check with a new function check_dir_flags. Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com> Reviewed-by: Simon Glass <sjg@chromium.org>
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@ -5,6 +5,7 @@
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#include <common.h>
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#include <dm.h>
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#include <dm/device_compat.h>
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#include <dm/device-internal.h>
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#include <dm/lists.h>
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#include <dm/uclass-internal.h>
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@ -510,12 +511,36 @@ int dm_gpio_set_value(const struct gpio_desc *desc, int value)
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return 0;
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}
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/* check dir flags invalid configuration */
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static int check_dir_flags(ulong flags)
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{
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if ((flags & GPIOD_IS_OUT) && (flags & GPIOD_IS_IN)) {
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log_debug("%s: flags 0x%lx has GPIOD_IS_OUT and GPIOD_IS_IN\n",
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__func__, flags);
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return -EINVAL;
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}
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return 0;
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}
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static int _dm_gpio_set_dir_flags(struct gpio_desc *desc, ulong flags)
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{
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struct udevice *dev = desc->dev;
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struct dm_gpio_ops *ops = gpio_get_ops(dev);
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struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
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int ret = 0;
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ret = check_dir_flags(flags);
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if (ret) {
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dev_dbg(dev,
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"%s error: set_dir_flags for gpio %s%d has invalid dir flags 0x%lx\n",
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desc->dev->name,
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uc_priv->bank_name ? uc_priv->bank_name : "",
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desc->offset, flags);
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return ret;
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}
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if (flags & GPIOD_IS_OUT) {
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int value = flags & GPIOD_IS_OUT_ACTIVE ? 1 : 0;
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