diff options
Diffstat (limited to 'drivers/ata/ahci_qoriq.c')
| -rw-r--r-- | drivers/ata/ahci_qoriq.c | 61 |
1 files changed, 39 insertions, 22 deletions
diff --git a/drivers/ata/ahci_qoriq.c b/drivers/ata/ahci_qoriq.c index ce59253ec158..a330307d3201 100644 --- a/drivers/ata/ahci_qoriq.c +++ b/drivers/ata/ahci_qoriq.c @@ -1,13 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Freescale QorIQ AHCI SATA platform driver * * Copyright 2015 Freescale, Inc. * Tang Yuantian <Yuantian.Tang@freescale.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. */ #include <linux/kernel.h> @@ -53,11 +49,13 @@ enum ahci_qoriq_type { AHCI_LS1021A, + AHCI_LS1028A, AHCI_LS1043A, AHCI_LS2080A, AHCI_LS1046A, AHCI_LS1088A, AHCI_LS2088A, + AHCI_LX2160A, }; struct ahci_qoriq_priv { @@ -67,13 +65,17 @@ struct ahci_qoriq_priv { bool is_dmacoherent; }; +static bool ecc_initialized; + static const struct of_device_id ahci_qoriq_of_match[] = { { .compatible = "fsl,ls1021a-ahci", .data = (void *)AHCI_LS1021A}, + { .compatible = "fsl,ls1028a-ahci", .data = (void *)AHCI_LS1028A}, { .compatible = "fsl,ls1043a-ahci", .data = (void *)AHCI_LS1043A}, { .compatible = "fsl,ls2080a-ahci", .data = (void *)AHCI_LS2080A}, { .compatible = "fsl,ls1046a-ahci", .data = (void *)AHCI_LS1046A}, { .compatible = "fsl,ls1088a-ahci", .data = (void *)AHCI_LS1088A}, { .compatible = "fsl,ls2088a-ahci", .data = (void *)AHCI_LS2088A}, + { .compatible = "fsl,lx2160a-ahci", .data = (void *)AHCI_LX2160A}, {}, }; MODULE_DEVICE_TABLE(of, ahci_qoriq_of_match); @@ -165,9 +167,10 @@ static int ahci_qoriq_phy_init(struct ahci_host_priv *hpriv) switch (qpriv->type) { case AHCI_LS1021A: - if (!qpriv->ecc_addr) + if (!(qpriv->ecc_addr || ecc_initialized)) return -EINVAL; - writel(SATA_ECC_DISABLE, qpriv->ecc_addr); + else if (qpriv->ecc_addr && !ecc_initialized) + writel(SATA_ECC_DISABLE, qpriv->ecc_addr); writel(AHCI_PORT_PHY_1_CFG, reg_base + PORT_PHY1); writel(LS1021A_PORT_PHY2, reg_base + PORT_PHY2); writel(LS1021A_PORT_PHY3, reg_base + PORT_PHY3); @@ -180,10 +183,12 @@ static int ahci_qoriq_phy_init(struct ahci_host_priv *hpriv) break; case AHCI_LS1043A: - if (!qpriv->ecc_addr) + if (!(qpriv->ecc_addr || ecc_initialized)) return -EINVAL; - writel(readl(qpriv->ecc_addr) | ECC_DIS_ARMV8_CH2, - qpriv->ecc_addr); + else if (qpriv->ecc_addr && !ecc_initialized) + writel(readl(qpriv->ecc_addr) | + ECC_DIS_ARMV8_CH2, + qpriv->ecc_addr); writel(AHCI_PORT_PHY_1_CFG, reg_base + PORT_PHY1); writel(AHCI_PORT_PHY2_CFG, reg_base + PORT_PHY2); writel(AHCI_PORT_PHY3_CFG, reg_base + PORT_PHY3); @@ -202,10 +207,12 @@ static int ahci_qoriq_phy_init(struct ahci_host_priv *hpriv) break; case AHCI_LS1046A: - if (!qpriv->ecc_addr) + if (!(qpriv->ecc_addr || ecc_initialized)) return -EINVAL; - writel(readl(qpriv->ecc_addr) | ECC_DIS_ARMV8_CH2, - qpriv->ecc_addr); + else if (qpriv->ecc_addr && !ecc_initialized) + writel(readl(qpriv->ecc_addr) | + ECC_DIS_ARMV8_CH2, + qpriv->ecc_addr); writel(AHCI_PORT_PHY_1_CFG, reg_base + PORT_PHY1); writel(AHCI_PORT_PHY2_CFG, reg_base + PORT_PHY2); writel(AHCI_PORT_PHY3_CFG, reg_base + PORT_PHY3); @@ -214,11 +221,15 @@ static int ahci_qoriq_phy_init(struct ahci_host_priv *hpriv) writel(AHCI_PORT_AXICC_CFG, reg_base + PORT_AXICC); break; + case AHCI_LS1028A: case AHCI_LS1088A: - if (!qpriv->ecc_addr) + case AHCI_LX2160A: + if (!(qpriv->ecc_addr || ecc_initialized)) return -EINVAL; - writel(readl(qpriv->ecc_addr) | ECC_DIS_LS1088A, - qpriv->ecc_addr); + else if (qpriv->ecc_addr && !ecc_initialized) + writel(readl(qpriv->ecc_addr) | + ECC_DIS_LS1088A, + qpriv->ecc_addr); writel(AHCI_PORT_PHY_1_CFG, reg_base + PORT_PHY1); writel(AHCI_PORT_PHY2_CFG, reg_base + PORT_PHY2); writel(AHCI_PORT_PHY3_CFG, reg_base + PORT_PHY3); @@ -237,6 +248,7 @@ static int ahci_qoriq_phy_init(struct ahci_host_priv *hpriv) break; } + ecc_initialized = true; return 0; } @@ -264,13 +276,18 @@ static int ahci_qoriq_probe(struct platform_device *pdev) qoriq_priv->type = (enum ahci_qoriq_type)of_id->data; - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, - "sata-ecc"); - if (res) { - qoriq_priv->ecc_addr = devm_ioremap_resource(dev, res); - if (IS_ERR(qoriq_priv->ecc_addr)) - return PTR_ERR(qoriq_priv->ecc_addr); + if (unlikely(!ecc_initialized)) { + res = platform_get_resource_byname(pdev, + IORESOURCE_MEM, + "sata-ecc"); + if (res) { + qoriq_priv->ecc_addr = + devm_ioremap_resource(dev, res); + if (IS_ERR(qoriq_priv->ecc_addr)) + return PTR_ERR(qoriq_priv->ecc_addr); + } } + qoriq_priv->is_dmacoherent = of_dma_is_coherent(np); rc = ahci_platform_enable_resources(hpriv); |