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reset: rzg2l-usbphy-ctrl: Move reset controller registration

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As soon as the reset controller is registered, it could be used by a
reset consumer. That means hardware setup to be done first and then the
registration of the reset controller. So move the registration of reset
controller at the end of probe().

While at it, fix the issue that the reset is not re-asserted in case
devm_reset_controller_register() fails and also use goto statements to
simplify the error path in probe().

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20240610164845.89666-1-biju.das.jz@bp.renesas.com
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Biju Das 2024-06-10 17:48:45 +01:00 committed by Philipp Zabel
parent 1613e604df
commit b081f13c11
1 changed files with 19 additions and 13 deletions
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32
drivers/reset/reset-rzg2l-usbphy-ctrl.c
View file

@ -125,25 +125,14 @@ static int rzg2l_usbphy_ctrl_probe(struct platform_device *pdev)
if (error)
return error;
priv->rcdev.ops = &rzg2l_usbphy_ctrl_reset_ops;
priv->rcdev.of_reset_n_cells = 1;
priv->rcdev.nr_resets = NUM_PORTS;
priv->rcdev.of_node = dev->of_node;
priv->rcdev.dev = dev;
error = devm_reset_controller_register(dev, &priv->rcdev);
if (error)
return error;
spin_lock_init(&priv->lock);
dev_set_drvdata(dev, priv);
pm_runtime_enable(&pdev->dev);
error = pm_runtime_resume_and_get(&pdev->dev);
if (error < 0) {
pm_runtime_disable(&pdev->dev);
reset_control_assert(priv->rstc);
return dev_err_probe(&pdev->dev, error, "pm_runtime_resume_and_get failed");
dev_err_probe(&pdev->dev, error, "pm_runtime_resume_and_get failed");
goto err_pm_disable_reset_deassert;
}
/* put pll and phy into reset state */
@ -153,7 +142,24 @@ static int rzg2l_usbphy_ctrl_probe(struct platform_device *pdev)
writel(val, priv->base + RESET);
spin_unlock_irqrestore(&priv->lock, flags);
priv->rcdev.ops = &rzg2l_usbphy_ctrl_reset_ops;
priv->rcdev.of_reset_n_cells = 1;
priv->rcdev.nr_resets = NUM_PORTS;
priv->rcdev.of_node = dev->of_node;
priv->rcdev.dev = dev;
error = devm_reset_controller_register(dev, &priv->rcdev);
if (error)
goto err_pm_runtime_put;
return 0;
err_pm_runtime_put:
pm_runtime_put(&pdev->dev);
err_pm_disable_reset_deassert:
pm_runtime_disable(&pdev->dev);
reset_control_assert(priv->rstc);
return error;
}
static int rzg2l_usbphy_ctrl_remove(struct platform_device *pdev)