[PATCH 2/2] ata: ahci-pci: Add new option CONFIG_SPL_AHCI_PCI

[Pali Rohár]

This new option allows to disable ahci-pci driver in SPL. Disabling it is
needed when SPL_PCI is not enabled as ahci-pci depends on PCI.

This change fixes following compile error when CONFIG_SPL_SATA_SUPPORT is
enabled and SPL_PCI is disabled.

    LD      spl/u-boot-spl
  arm-linux-gnueabihf-ld.bfd: drivers/ata/ahci.o: in function `ahci_probe_scsi_pci':
  drivers/ata/ahci.c:1205: undefined reference to `dm_pci_map_bar'
  arm-linux-gnueabihf-ld.bfd: drivers/ata/ahci.c:1215: undefined reference to `dm_pci_read_config16'
  arm-linux-gnueabihf-ld.bfd: drivers/ata/ahci.c:1216: undefined reference to `dm_pci_read_config16'
  arm-linux-gnueabihf-ld.bfd: drivers/ata/ahci.c:1220: undefined reference to `dm_pci_map_bar'
  make[1]: *** [scripts/Makefile.spl:512: spl/u-boot-spl] Error 1
  make: *** [Makefile:1977: spl/u-boot-spl] Error 2

    LD      spl/u-boot-spl
  arm-linux-gnueabihf-ld.bfd: drivers/ata/ahci-pci.o: in function `ahci_pci_probe':
  drivers/ata/ahci-pci.c:21: undefined reference to `ahci_probe_scsi_pci'
  make[1]: *** [scripts/Makefile.spl:512: spl/u-boot-spl] Error 1
  make: *** [Makefile:1977: spl/u-boot-spl] Error 2

Signed-off-by: Pali Rohár <pali at kernel.org>
---
 drivers/ata/Kconfig  | 6 ++++++
 drivers/ata/Makefile | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index 0c1490a9f900..96c7c30375bd 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -41,6 +41,12 @@ config AHCI_PCI
 	help
 	  Enables support for the PCI-based AHCI controller.
 
+config SPL_AHCI_PCI
+	bool "Support for PCI-based AHCI controller for SPL"
+	depends on SPL
+	depends on SPL_PCI
+	depends on SPL_SATA_SUPPORT && DM_SCSI
+
 config SATA_CEVA
 	bool "Ceva Sata controller"
 	depends on AHCI
diff --git a/drivers/ata/Makefile b/drivers/ata/Makefile
index 4811b2f82c4e..cd88131dcd13 100644
--- a/drivers/ata/Makefile
+++ b/drivers/ata/Makefile
@@ -5,7 +5,7 @@
 
 obj-$(CONFIG_DWC_AHCI) += dwc_ahci.o
 obj-$(CONFIG_AHCI) += ahci-uclass.o
-obj-$(CONFIG_AHCI_PCI) += ahci-pci.o
+obj-$(CONFIG_$(SPL_)AHCI_PCI) += ahci-pci.o
 obj-$(CONFIG_SCSI_AHCI) += ahci.o
 obj-$(CONFIG_DWC_AHSATA) += dwc_ahsata.o
 obj-$(CONFIG_FSL_SATA) += fsl_sata.o
-- 
2.20.1