Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
net: phy: move mdio_device reset handling functions in the code
In preparation of a follow-up patch this moves reset-related functions
in the code.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://patch.msgid.link/8ea1a929-33b8-49ee-afe6-355f5a7d2bd1@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
authored by
Heiner Kallweit
and committed by
Jakub Kicinski
2d7bebc9
a99f06e5
+81
-81
+81
-81
drivers/net/phy/mdio_device.c
+81
-81
drivers/net/phy/mdio_device.c
···
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#include <linux/property.h>
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#include "mdio-private.h"
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/**
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* mdio_device_register_reset - Read and initialize the reset properties of
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* an mdio device
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* @mdiodev: mdio_device structure
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*
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* Return: Zero if successful, negative error code on failure
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*/
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int mdio_device_register_reset(struct mdio_device *mdiodev)
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{
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struct reset_control *reset;
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/* Deassert the optional reset signal */
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mdiodev->reset_gpio = gpiod_get_optional(&mdiodev->dev,
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"reset", GPIOD_OUT_LOW);
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if (IS_ERR(mdiodev->reset_gpio))
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return PTR_ERR(mdiodev->reset_gpio);
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if (mdiodev->reset_gpio)
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gpiod_set_consumer_name(mdiodev->reset_gpio, "PHY reset");
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reset = reset_control_get_optional_exclusive(&mdiodev->dev, "phy");
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if (IS_ERR(reset)) {
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gpiod_put(mdiodev->reset_gpio);
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mdiodev->reset_gpio = NULL;
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return PTR_ERR(reset);
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}
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mdiodev->reset_ctrl = reset;
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/* Read optional firmware properties */
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device_property_read_u32(&mdiodev->dev, "reset-assert-us",
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&mdiodev->reset_assert_delay);
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device_property_read_u32(&mdiodev->dev, "reset-deassert-us",
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&mdiodev->reset_deassert_delay);
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return 0;
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}
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/**
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* mdio_device_unregister_reset - uninitialize the reset properties of
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* an mdio device
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* @mdiodev: mdio_device structure
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*/
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void mdio_device_unregister_reset(struct mdio_device *mdiodev)
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{
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gpiod_put(mdiodev->reset_gpio);
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mdiodev->reset_gpio = NULL;
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reset_control_put(mdiodev->reset_ctrl);
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mdiodev->reset_ctrl = NULL;
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mdiodev->reset_assert_delay = 0;
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mdiodev->reset_deassert_delay = 0;
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}
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void mdio_device_reset(struct mdio_device *mdiodev, int value)
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{
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unsigned int d;
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if (!mdiodev->reset_gpio && !mdiodev->reset_ctrl)
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return;
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if (mdiodev->reset_state == value)
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return;
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if (mdiodev->reset_gpio)
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gpiod_set_value_cansleep(mdiodev->reset_gpio, value);
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if (mdiodev->reset_ctrl) {
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if (value)
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reset_control_assert(mdiodev->reset_ctrl);
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else
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reset_control_deassert(mdiodev->reset_ctrl);
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}
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d = value ? mdiodev->reset_assert_delay : mdiodev->reset_deassert_delay;
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if (d)
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fsleep(d);
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mdiodev->reset_state = value;
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}
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EXPORT_SYMBOL(mdio_device_reset);
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void mdio_device_free(struct mdio_device *mdiodev)
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{
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put_device(&mdiodev->dev);
···
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mdiobus_unregister_device(mdiodev);
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}
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EXPORT_SYMBOL(mdio_device_remove);
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/**
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* mdio_device_register_reset - Read and initialize the reset properties of
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* an mdio device
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* @mdiodev: mdio_device structure
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*
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* Return: Zero if successful, negative error code on failure
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*/
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int mdio_device_register_reset(struct mdio_device *mdiodev)
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{
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struct reset_control *reset;
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/* Deassert the optional reset signal */
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mdiodev->reset_gpio = gpiod_get_optional(&mdiodev->dev,
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"reset", GPIOD_OUT_LOW);
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if (IS_ERR(mdiodev->reset_gpio))
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return PTR_ERR(mdiodev->reset_gpio);
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if (mdiodev->reset_gpio)
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gpiod_set_consumer_name(mdiodev->reset_gpio, "PHY reset");
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reset = reset_control_get_optional_exclusive(&mdiodev->dev, "phy");
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if (IS_ERR(reset)) {
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gpiod_put(mdiodev->reset_gpio);
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mdiodev->reset_gpio = NULL;
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return PTR_ERR(reset);
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}
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mdiodev->reset_ctrl = reset;
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/* Read optional firmware properties */
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device_property_read_u32(&mdiodev->dev, "reset-assert-us",
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&mdiodev->reset_assert_delay);
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device_property_read_u32(&mdiodev->dev, "reset-deassert-us",
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&mdiodev->reset_deassert_delay);
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return 0;
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}
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/**
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* mdio_device_unregister_reset - uninitialize the reset properties of
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* an mdio device
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* @mdiodev: mdio_device structure
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*/
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void mdio_device_unregister_reset(struct mdio_device *mdiodev)
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{
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gpiod_put(mdiodev->reset_gpio);
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mdiodev->reset_gpio = NULL;
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reset_control_put(mdiodev->reset_ctrl);
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mdiodev->reset_ctrl = NULL;
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mdiodev->reset_assert_delay = 0;
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mdiodev->reset_deassert_delay = 0;
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}
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void mdio_device_reset(struct mdio_device *mdiodev, int value)
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{
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unsigned int d;
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if (!mdiodev->reset_gpio && !mdiodev->reset_ctrl)
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return;
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if (mdiodev->reset_state == value)
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return;
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if (mdiodev->reset_gpio)
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gpiod_set_value_cansleep(mdiodev->reset_gpio, value);
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if (mdiodev->reset_ctrl) {
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if (value)
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reset_control_assert(mdiodev->reset_ctrl);
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else
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reset_control_deassert(mdiodev->reset_ctrl);
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}
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d = value ? mdiodev->reset_assert_delay : mdiodev->reset_deassert_delay;
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if (d)
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fsleep(d);
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mdiodev->reset_state = value;
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}
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EXPORT_SYMBOL(mdio_device_reset);
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/**
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* mdio_probe - probe an MDIO device