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Commit 386dc3b8 authored by Tang Yuantian's avatar Tang Yuantian Committed by Tejun Heo
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ahci: qoriq: added a condition to enable dma coherence 



Enable DMA coherence in SATA controller on condition that
dma-coherent property exists in sata node in DTS.

Signed-off-by: default avatarTang Yuantian <yuantian.tang@nxp.com>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent d4ae1e26

drivers/ata/ahci_qoriq.c

+11 −4
Original line number Diff line number Diff line
@@ -59,6 +59,7 @@ struct ahci_qoriq_priv { 
	struct ccsr_ahci *reg_base;

	enum ahci_qoriq_type type;

	void __iomem *ecc_addr;

	bool is_dmacoherent;

};



static const struct of_device_id ahci_qoriq_of_match[] = {
@@ -164,18 +165,22 @@ static int ahci_qoriq_phy_init(struct ahci_host_priv *hpriv) 
		writel(LS1021A_PORT_PHY4, reg_base + PORT_PHY4);

		writel(LS1021A_PORT_PHY5, reg_base + PORT_PHY5);

		writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS);

		writel(AHCI_PORT_AXICC_CFG, reg_base + LS1021A_AXICC_ADDR);

		if (qpriv->is_dmacoherent)

			writel(AHCI_PORT_AXICC_CFG,

					reg_base + LS1021A_AXICC_ADDR);

		break;



	case AHCI_LS1043A:

		writel(AHCI_PORT_PHY_1_CFG, reg_base + PORT_PHY1);

		writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS);

		if (qpriv->is_dmacoherent)

			writel(AHCI_PORT_AXICC_CFG, reg_base + PORT_AXICC);

		break;



	case AHCI_LS2080A:

		writel(AHCI_PORT_PHY_1_CFG, reg_base + PORT_PHY1);

		writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS);

		if (qpriv->is_dmacoherent)

			writel(AHCI_PORT_AXICC_CFG, reg_base + PORT_AXICC);

		break;
@@ -183,6 +188,7 @@ static int ahci_qoriq_phy_init(struct ahci_host_priv *hpriv) 
		writel(LS1046A_SATA_ECC_DIS, qpriv->ecc_addr);

		writel(AHCI_PORT_PHY_1_CFG, reg_base + PORT_PHY1);

		writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS);

		if (qpriv->is_dmacoherent)

			writel(AHCI_PORT_AXICC_CFG, reg_base + PORT_AXICC);

		break;

	}
@@ -221,6 +227,7 @@ static int ahci_qoriq_probe(struct platform_device *pdev) 
		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);

	if (rc)