target/linux/layerscape/patches-5.4/815-sata-0001-ahci-qoriq-enable-acpi-support-in-qoriq-ahci-driver.patch

   1 From 8f0baa717e7854b795567678415bc7173d66bc13 Mon Sep 17 00:00:00 2001
   2 From: Peng Ma <peng.ma@nxp.com>
   3 Date: Wed, 15 May 2019 05:45:35 +0000
   4 Subject: [PATCH] ahci: qoriq: enable acpi support in qoriq ahci driver
   5
   6 This patch enables ACPI support in qoriq ahci driver.
   7
   8 Signed-off-by: Udit Kumar <udit.kumar@nxp.com>
   9 Signed-off-by: Peng Ma <peng.ma@nxp.com>
  10 ---
  11  drivers/ata/ahci_qoriq.c | 20 +++++++++++++++++---
  12  1 file changed, 17 insertions(+), 3 deletions(-)
  13
  14 --- a/drivers/ata/ahci_qoriq.c
  15 +++ b/drivers/ata/ahci_qoriq.c
  16 @@ -6,6 +6,7 @@
  17   *   Tang Yuantian <Yuantian.Tang@freescale.com>
  18   */
  19
  20 +#include <linux/acpi.h>
  21  #include <linux/kernel.h>
  22  #include <linux/module.h>
  23  #include <linux/pm.h>
  24 @@ -80,6 +81,12 @@ static const struct of_device_id ahci_qo
  25  };
  26  MODULE_DEVICE_TABLE(of, ahci_qoriq_of_match);
  27
  28 +static const struct acpi_device_id ahci_qoriq_acpi_match[] = {
  29 +       {"NXP0004", .driver_data = (kernel_ulong_t)AHCI_LX2160A},
  30 +       { }
  31 +};
  32 +MODULE_DEVICE_TABLE(acpi, ahci_qoriq_acpi_match);
  33 +
  34  static int ahci_qoriq_hardreset(struct ata_link *link, unsigned int *class,
  35                           unsigned long deadline)
  36  {
  37 @@ -255,6 +262,7 @@ static int ahci_qoriq_phy_init(struct ah
  38  static int ahci_qoriq_probe(struct platform_device *pdev)
  39  {
  40         struct device_node *np = pdev->dev.of_node;
  41 +       const struct acpi_device_id *acpi_id;
  42         struct device *dev = &pdev->dev;
  43         struct ahci_host_priv *hpriv;
  44         struct ahci_qoriq_priv *qoriq_priv;
  45 @@ -267,14 +275,18 @@ static int ahci_qoriq_probe(struct platf
  46                 return PTR_ERR(hpriv);
  47
  48         of_id = of_match_node(ahci_qoriq_of_match, np);
  49 -       if (!of_id)
  50 +       acpi_id = acpi_match_device(ahci_qoriq_acpi_match, &pdev->dev);
  51 +       if (!(of_id || acpi_id))
  52                 return -ENODEV;
  53
  54         qoriq_priv = devm_kzalloc(dev, sizeof(*qoriq_priv), GFP_KERNEL);
  55         if (!qoriq_priv)
  56                 return -ENOMEM;
  57
  58 -       qoriq_priv->type = (enum ahci_qoriq_type)of_id->data;
  59 +       if (of_id)
  60 +               qoriq_priv->type = (enum ahci_qoriq_type)of_id->data;
  61 +       else
  62 +               qoriq_priv->type = (enum ahci_qoriq_type)acpi_id->driver_data;
  63
  64         if (unlikely(!ecc_initialized)) {
  65                 res = platform_get_resource_byname(pdev,
  66 @@ -288,7 +300,8 @@ static int ahci_qoriq_probe(struct platf
  67                 }
  68         }
  69
  70 -       qoriq_priv->is_dmacoherent = of_dma_is_coherent(np);
  71 +       if (device_get_dma_attr(&pdev->dev) == DEV_DMA_COHERENT)
  72 +               qoriq_priv->is_dmacoherent = true;
  73
  74         rc = ahci_platform_enable_resources(hpriv);
  75         if (rc)
  76 @@ -354,6 +367,7 @@ static struct platform_driver ahci_qoriq
  77         .driver = {
  78                 .name = DRV_NAME,
  79                 .of_match_table = ahci_qoriq_of_match,
  80 +               .acpi_match_table = ahci_qoriq_acpi_match,
  81                 .pm = &ahci_qoriq_pm_ops,
  82         },
  83  };