mk-rootfs.sh

hc

2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376

 kernel/drivers/ata/ahci_brcm.c
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..
@@ -1,17 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * Broadcom SATA3 AHCI Controller Driver
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  *
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  * Copyright © 2009-2015 Broadcom Corporation
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2, or (at your option)
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- * any later version.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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  */
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 #include <linux/ahci_platform.h>
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@@ -82,6 +73,7 @@
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 	BRCM_SATA_BCM7425 = 1,
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 	BRCM_SATA_BCM7445,
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 	BRCM_SATA_NSP,
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+	BRCM_SATA_BCM7216,
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 };
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 enum brcm_ahci_quirks {
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@@ -346,24 +338,39 @@
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 	.port_ops	= &ahci_brcm_platform_ops,
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 };
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340
 
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-#ifdef CONFIG_PM_SLEEP
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 static int brcm_ahci_suspend(struct device *dev)
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 {
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 	struct ata_host *host = dev_get_drvdata(dev);
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 	struct ahci_host_priv *hpriv = host->private_data;
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 	struct brcm_ahci_priv *priv = hpriv->plat_data;
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+	int ret;
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347
 
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 	brcm_sata_phys_disable(priv);
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-	return ahci_platform_suspend(dev);
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+	if (IS_ENABLED(CONFIG_PM_SLEEP))
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+		ret = ahci_platform_suspend(dev);
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+	else
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+		ret = 0;
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+
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+	if (priv->version != BRCM_SATA_BCM7216)
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+		reset_control_assert(priv->rcdev);
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+
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+	return ret;
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 }
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360
 
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-static int brcm_ahci_resume(struct device *dev)
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+static int __maybe_unused brcm_ahci_resume(struct device *dev)
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 {
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 	struct ata_host *host = dev_get_drvdata(dev);
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 	struct ahci_host_priv *hpriv = host->private_data;
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 	struct brcm_ahci_priv *priv = hpriv->plat_data;
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-	int ret;
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+	int ret = 0;
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+
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+	if (priv->version == BRCM_SATA_BCM7216)
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+		ret = reset_control_reset(priv->rcdev);
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+	else
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+		ret = reset_control_deassert(priv->rcdev);
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+	if (ret)
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+		return ret;
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374
 
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 	/* Make sure clocks are turned on before re-configuration */
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 	ret = ahci_platform_enable_clks(hpriv);
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@@ -408,7 +415,6 @@
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 	ahci_platform_disable_clks(hpriv);
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 	return ret;
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 }
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-#endif
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418
 
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 static struct scsi_host_template ahci_platform_sht = {
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 	AHCI_SHT(DRV_NAME),
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@@ -417,7 +423,9 @@
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 static const struct of_device_id ahci_of_match[] = {
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 	{.compatible = "brcm,bcm7425-ahci", .data = (void *)BRCM_SATA_BCM7425},
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 	{.compatible = "brcm,bcm7445-ahci", .data = (void *)BRCM_SATA_BCM7445},
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+	{.compatible = "brcm,bcm63138-ahci", .data = (void *)BRCM_SATA_BCM7445},
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 	{.compatible = "brcm,bcm-nsp-ahci", .data = (void *)BRCM_SATA_NSP},
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+	{.compatible = "brcm,bcm7216-ahci", .data = (void *)BRCM_SATA_BCM7216},
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 	{},
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 };
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 MODULE_DEVICE_TABLE(of, ahci_of_match);
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@@ -426,6 +434,7 @@
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 {
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 	const struct of_device_id *of_id;
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 	struct device *dev = &pdev->dev;
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+	const char *reset_name = NULL;
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 	struct brcm_ahci_priv *priv;
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 	struct ahci_host_priv *hpriv;
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 	struct resource *res;
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@@ -447,16 +456,19 @@
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 	if (IS_ERR(priv->top_ctrl))
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 		return PTR_ERR(priv->top_ctrl);
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458
 
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-	/* Reset is optional depending on platform */
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-	priv->rcdev = devm_reset_control_get(&pdev->dev, "ahci");
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-	if (!IS_ERR_OR_NULL(priv->rcdev))
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-		reset_control_deassert(priv->rcdev);
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+	/* Reset is optional depending on platform and named differently */
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+	if (priv->version == BRCM_SATA_BCM7216)
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+		reset_name = "rescal";
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+	else
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+		reset_name = "ahci";
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+
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+	priv->rcdev = devm_reset_control_get_optional(&pdev->dev, reset_name);
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+	if (IS_ERR(priv->rcdev))
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+		return PTR_ERR(priv->rcdev);
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468
 
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 	hpriv = ahci_platform_get_resources(pdev, 0);
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-	if (IS_ERR(hpriv)) {
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-		ret = PTR_ERR(hpriv);
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-		goto out_reset;
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-	}
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+	if (IS_ERR(hpriv))
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+		return PTR_ERR(hpriv);
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 	hpriv->plat_data = priv;
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 	hpriv->flags = AHCI_HFLAG_WAKE_BEFORE_STOP | AHCI_HFLAG_NO_WRITE_TO_RO;
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@@ -464,7 +476,7 @@
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 	switch (priv->version) {
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 	case BRCM_SATA_BCM7425:
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 		hpriv->flags |= AHCI_HFLAG_DELAY_ENGINE;
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-		/* fall through */
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+		fallthrough;
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 	case BRCM_SATA_NSP:
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 		hpriv->flags |= AHCI_HFLAG_NO_NCQ;
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 		priv->quirks |= BRCM_AHCI_QUIRK_SKIP_PHY_ENABLE;
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@@ -472,6 +484,13 @@
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 	default:
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 		break;
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 	}
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+
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+	if (priv->version == BRCM_SATA_BCM7216)
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+		ret = reset_control_reset(priv->rcdev);
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+	else
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+		ret = reset_control_deassert(priv->rcdev);
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+	if (ret)
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+		return ret;
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 	ret = ahci_platform_enable_clks(hpriv);
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 	if (ret)
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@@ -520,7 +539,7 @@
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 out_disable_clks:
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 	ahci_platform_disable_clks(hpriv);
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 out_reset:
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-	if (!IS_ERR_OR_NULL(priv->rcdev))
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+	if (priv->version != BRCM_SATA_BCM7216)
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 		reset_control_assert(priv->rcdev);
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 	return ret;
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 }
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@@ -541,11 +560,26 @@
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 	return 0;
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 }
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+static void brcm_ahci_shutdown(struct platform_device *pdev)
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+{
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+	int ret;
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+
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+	/* All resources releasing happens via devres, but our device, unlike a
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+	 * proper remove is not disappearing, therefore using
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+	 * brcm_ahci_suspend() here which does explicit power management is
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+	 * appropriate.
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+	 */
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+	ret = brcm_ahci_suspend(&pdev->dev);
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+	if (ret)
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+		dev_err(&pdev->dev, "failed to shutdown\n");
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+}
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+
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 static SIMPLE_DEV_PM_OPS(ahci_brcm_pm_ops, brcm_ahci_suspend, brcm_ahci_resume);
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 static struct platform_driver brcm_ahci_driver = {
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 	.probe = brcm_ahci_probe,
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 	.remove = brcm_ahci_remove,
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+	.shutdown = brcm_ahci_shutdown,
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 	.driver = {
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 		.name = DRV_NAME,
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 		.of_match_table = ahci_of_match,