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e72e683e36
Implement trivial extension to the sandbox PHY, which makes it pretend to support selecting USB Host mode and nothing else. Any other mode is rejected with -EINVAL. Any submode except for default submode 0 is rejected with -EOPNOTSUPP . The implementation behaves in this trivial way to permit easy unit testing using test which is also added in this commit. To run the test, use e.g. sandbox64_defconfig and run U-Boot as follows: $ ./u-boot -Tc 'ut dm phy_setup' Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
132 lines
2.3 KiB
C
132 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2017 Texas Instruments Incorporated - https://www.ti.com/
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* Written by Jean-Jacques Hiblot <jjhiblot@ti.com>
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*/
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#include <dm.h>
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#include <generic-phy.h>
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#define DRIVER_DATA 0x12345678
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struct sandbox_phy_priv {
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bool initialized;
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bool on;
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bool broken;
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};
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static int sandbox_phy_power_on(struct phy *phy)
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{
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struct sandbox_phy_priv *priv = dev_get_priv(phy->dev);
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if (!priv->initialized)
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return -EIO;
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if (priv->broken)
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return -EIO;
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priv->on = true;
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return 0;
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}
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static int sandbox_phy_power_off(struct phy *phy)
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{
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struct sandbox_phy_priv *priv = dev_get_priv(phy->dev);
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if (!priv->initialized)
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return -EIO;
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if (priv->broken)
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return -EIO;
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/*
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* for validation purpose, let's says that power off
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* works only for PHY 0
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*/
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if (phy->id)
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return -EIO;
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priv->on = false;
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return 0;
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}
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static int sandbox_phy_init(struct phy *phy)
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{
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struct sandbox_phy_priv *priv = dev_get_priv(phy->dev);
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priv->initialized = true;
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priv->on = true;
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return 0;
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}
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static int sandbox_phy_exit(struct phy *phy)
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{
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struct sandbox_phy_priv *priv = dev_get_priv(phy->dev);
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priv->initialized = false;
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priv->on = false;
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return 0;
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}
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static int
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sandbox_phy_set_mode(struct phy *phy, enum phy_mode mode, int submode)
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{
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if (submode)
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return -EOPNOTSUPP;
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if (mode != PHY_MODE_USB_HOST)
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return -EINVAL;
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return 0;
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}
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static int sandbox_phy_bind(struct udevice *dev)
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{
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if (dev_get_driver_data(dev) != DRIVER_DATA)
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return -ENODATA;
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return 0;
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}
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static int sandbox_phy_probe(struct udevice *dev)
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{
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struct sandbox_phy_priv *priv = dev_get_priv(dev);
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priv->initialized = false;
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priv->on = false;
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priv->broken = dev_read_bool(dev, "broken");
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return 0;
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}
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static struct phy_ops sandbox_phy_ops = {
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.power_on = sandbox_phy_power_on,
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.power_off = sandbox_phy_power_off,
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.init = sandbox_phy_init,
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.exit = sandbox_phy_exit,
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.set_mode = sandbox_phy_set_mode,
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};
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static const struct udevice_id sandbox_phy_ids[] = {
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{ .compatible = "sandbox,phy_no_driver_data",
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},
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{ .compatible = "sandbox,phy",
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.data = DRIVER_DATA
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},
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{ }
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};
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U_BOOT_DRIVER(phy_sandbox) = {
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.name = "phy_sandbox",
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.id = UCLASS_PHY,
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.bind = sandbox_phy_bind,
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.of_match = sandbox_phy_ids,
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.ops = &sandbox_phy_ops,
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.probe = sandbox_phy_probe,
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.priv_auto = sizeof(struct sandbox_phy_priv),
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};
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