*/
#include <common.h>
+#include <malloc.h>
+#include <dm/device_compat.h>
#include <linux/libfdt.h>
#include <linux/err.h>
#include <linux/list.h>
DECLARE_GLOBAL_DATA_PTR;
-int pinctrl_decode_pin_config(const void *blob, int node)
-{
- int flags = 0;
-
- if (fdtdec_get_bool(blob, node, "bias-pull-up"))
- flags |= 1 << PIN_CONFIG_BIAS_PULL_UP;
- else if (fdtdec_get_bool(blob, node, "bias-pull-down"))
- flags |= 1 << PIN_CONFIG_BIAS_PULL_DOWN;
-
- return flags;
-}
-
#if CONFIG_IS_ENABLED(PINCTRL_FULL)
/**
* pinctrl_config_one() - apply pinctrl settings for a single node
phandle = fdt32_to_cpu(*list++);
ret = uclass_get_device_by_phandle_id(UCLASS_PINCONFIG, phandle,
&config);
- if (ret)
- return ret;
+ if (ret) {
+ dev_warn(dev, "%s: uclass_get_device_by_phandle_id: err=%d\n",
+ __func__, ret);
+ continue;
+ }
ret = pinctrl_config_one(config);
- if (ret)
- return ret;
+ if (ret) {
+ dev_warn(dev, "%s: pinctrl_config_one: err=%d\n",
+ __func__, ret);
+ continue;
+ }
}
return 0;
ofnode node;
int ret;
+ if (!dev_of_valid(dev))
+ return 0;
+
dev_for_each_subnode(node, dev) {
if (pre_reloc_only &&
!ofnode_pre_reloc(node))
ofnode_get_property(node, "compatible", &ret);
if (ret >= 0)
continue;
+ /* If this node has "gpio-controller" property, skip */
+ if (ofnode_read_bool(node, "gpio-controller"))
+ continue;
if (ret != -FDT_ERR_NOTFOUND)
return ret;
UCLASS_DRIVER(pinconfig) = {
.id = UCLASS_PINCONFIG,
+#if CONFIG_IS_ENABLED(PINCONF_RECURSIVE)
.post_bind = pinconfig_post_bind,
+#endif
.name = "pinconfig",
};
}
#endif
+static int
+pinctrl_gpio_get_pinctrl_and_offset(struct udevice *dev, unsigned offset,
+ struct udevice **pctldev,
+ unsigned int *pin_selector)
+{
+ struct ofnode_phandle_args args;
+ unsigned gpio_offset, pfc_base, pfc_pins;
+ int ret;
+
+ ret = dev_read_phandle_with_args(dev, "gpio-ranges", NULL, 3,
+ 0, &args);
+ if (ret) {
+ dev_dbg(dev, "%s: dev_read_phandle_with_args: err=%d\n",
+ __func__, ret);
+ return ret;
+ }
+
+ ret = uclass_get_device_by_ofnode(UCLASS_PINCTRL,
+ args.node, pctldev);
+ if (ret) {
+ dev_dbg(dev,
+ "%s: uclass_get_device_by_of_offset failed: err=%d\n",
+ __func__, ret);
+ return ret;
+ }
+
+ gpio_offset = args.args[0];
+ pfc_base = args.args[1];
+ pfc_pins = args.args[2];
+
+ if (offset < gpio_offset || offset > gpio_offset + pfc_pins) {
+ dev_dbg(dev,
+ "%s: GPIO can not be mapped to pincontrol pin\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ offset -= gpio_offset;
+ offset += pfc_base;
+ *pin_selector = offset;
+
+ return 0;
+}
+
+/**
+ * pinctrl_gpio_request() - request a single pin to be used as GPIO
+ *
+ * @dev: GPIO peripheral device
+ * @offset: the GPIO pin offset from the GPIO controller
+ * @return: 0 on success, or negative error code on failure
+ */
+int pinctrl_gpio_request(struct udevice *dev, unsigned offset)
+{
+ const struct pinctrl_ops *ops;
+ struct udevice *pctldev;
+ unsigned int pin_selector;
+ int ret;
+
+ ret = pinctrl_gpio_get_pinctrl_and_offset(dev, offset,
+ &pctldev, &pin_selector);
+ if (ret)
+ return ret;
+
+ ops = pinctrl_get_ops(pctldev);
+ if (!ops || !ops->gpio_request_enable)
+ return -ENOTSUPP;
+
+ return ops->gpio_request_enable(pctldev, pin_selector);
+}
+
+/**
+ * pinctrl_gpio_free() - free a single pin used as GPIO
+ *
+ * @dev: GPIO peripheral device
+ * @offset: the GPIO pin offset from the GPIO controller
+ * @return: 0 on success, or negative error code on failure
+ */
+int pinctrl_gpio_free(struct udevice *dev, unsigned offset)
+{
+ const struct pinctrl_ops *ops;
+ struct udevice *pctldev;
+ unsigned int pin_selector;
+ int ret;
+
+ ret = pinctrl_gpio_get_pinctrl_and_offset(dev, offset,
+ &pctldev, &pin_selector);
+ if (ret)
+ return ret;
+
+ ops = pinctrl_get_ops(pctldev);
+ if (!ops || !ops->gpio_disable_free)
+ return -ENOTSUPP;
+
+ return ops->gpio_disable_free(pctldev, pin_selector);
+}
+
/**
* pinctrl_select_state_simple() - simple implementation of pinctrl_select_state
*
int ret;
/*
- * For simplicity, assume the first device of PINCTRL uclass
- * is the correct one. This is most likely OK as there is
- * usually only one pinctrl device on the system.
+ * For most system, there is only one pincontroller device. But in
+ * case of multiple pincontroller devices, probe the one with sequence
+ * number 0 (defined by alias) to avoid race condition.
*/
- ret = uclass_get_device(UCLASS_PINCTRL, 0, &pctldev);
+ ret = uclass_get_device_by_seq(UCLASS_PINCTRL, 0, &pctldev);
+ if (ret)
+ /* if not found, get the first one */
+ ret = uclass_get_device(UCLASS_PINCTRL, 0, &pctldev);
if (ret)
return ret;
return ops->get_gpio_mux(dev, banknum, index);
}
+int pinctrl_get_pins_count(struct udevice *dev)
+{
+ struct pinctrl_ops *ops = pinctrl_get_ops(dev);
+
+ if (!ops->get_pins_count)
+ return -ENOSYS;
+
+ return ops->get_pins_count(dev);
+}
+
+int pinctrl_get_pin_name(struct udevice *dev, int selector, char *buf,
+ int size)
+{
+ struct pinctrl_ops *ops = pinctrl_get_ops(dev);
+
+ if (!ops->get_pin_name)
+ return -ENOSYS;
+
+ snprintf(buf, size, ops->get_pin_name(dev, selector));
+
+ return 0;
+}
+
+int pinctrl_get_pin_muxing(struct udevice *dev, int selector, char *buf,
+ int size)
+{
+ struct pinctrl_ops *ops = pinctrl_get_ops(dev);
+
+ if (!ops->get_pin_muxing)
+ return -ENOSYS;
+
+ return ops->get_pin_muxing(dev, selector, buf, size);
+}
+
/**
* pinconfig_post_bind() - post binding for PINCTRL uclass
* Recursively bind child nodes as pinconfig devices in case of full pinctrl.
* @dev: pinctrl device
* @return: 0 on success, or negative error code on failure
*/
-static int pinctrl_post_bind(struct udevice *dev)
+static int __maybe_unused pinctrl_post_bind(struct udevice *dev)
{
const struct pinctrl_ops *ops = pinctrl_get_ops(dev);
projects / oweals / u-boot.git / blobdiff