dm: scsi: Add a generic PCI-based AHCI driver

This adds support for PCI-based AHCI controller based on DM SCSI.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index 6427f1b94a669e992045210d584059b147e18ca5..db051605f5ceb11a8c80f592659d32e0e22fa8a3 100644 (file)
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -40,6 +40,12 @@ config DM_SCSI
 
 menu "SATA/SCSI device support"
 
+config AHCI_PCI
+       bool "Support for PCI-based AHCI controller"
+       depends on DM_SCSI
+       help
+         Enables support for the PCI-based AHCI controller.
+
 config SATA_CEVA
        bool "Ceva Sata controller"
        depends on AHCI

diff --git a/drivers/ata/Makefile b/drivers/ata/Makefile
index c48184c4c35501e9b6c4843bed39658750fce37b..4e2de930256293237eb6634f0caa0e5b17910378 100644 (file)
--- a/drivers/ata/Makefile
+++ b/drivers/ata/Makefile
@@ -7,6 +7,7 @@
 
 obj-$(CONFIG_DWC_AHCI) += dwc_ahci.o
 obj-$(CONFIG_AHCI) += ahci-uclass.o
+obj-$(CONFIG_AHCI_PCI) += ahci-pci.o
 obj-$(CONFIG_SCSI_AHCI) += ahci.o
 obj-$(CONFIG_DWC_AHSATA) += dwc_ahsata.o
 obj-$(CONFIG_FSL_SATA) += fsl_sata.o

diff --git a/drivers/ata/ahci-pci.c b/drivers/ata/ahci-pci.c
new file mode 100644 (file)
index 0000000..f46fad8
--- /dev/null
+++ b/drivers/ata/ahci-pci.c
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2017, Bin Meng <bmeng.cn@gmail.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <ahci.h>
+#include <dm.h>
+#include <pci.h>
+
+static int ahci_pci_bind(struct udevice *dev)
+{
+       struct udevice *scsi_dev;
+
+       return ahci_bind_scsi(dev, &scsi_dev);
+}
+
+static int ahci_pci_probe(struct udevice *dev)
+{
+       return ahci_probe_scsi(dev);
+}
+
+static const struct udevice_id ahci_pci_ids[] = {
+       { .compatible = "ahci-pci" },
+       { }
+};
+
+U_BOOT_DRIVER(ahci_pci) = {
+       .name   = "ahci_pci",
+       .id     = UCLASS_AHCI,
+       .of_match = ahci_pci_ids,
+       .bind   = ahci_pci_bind,
+       .probe = ahci_pci_probe,
+};
+
+static struct pci_device_id ahci_pci_supported[] = {
+       { PCI_DEVICE_CLASS(PCI_CLASS_STORAGE_SATA_AHCI, ~0) },
+       {},
+};
+
+U_BOOT_PCI_DEVICE(ahci_pci, ahci_pci_supported);