mmc: Support of PCI mode in the dw_mmc driver

Support of PCI mode for the dw_mmc driver. This Patch adds the
support for the scenario where the Synopsys Designware IP
is present on the PCI bus. The patch adds the minimal modifications
necessary for the driver to work on PCI platform. Also added separate
files for PCI and PLATFORM modes of operation.

Signed-off-by: Shashidhar Hiremath <shashidharh@vayavyalabs.com>
Acked-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

1 files changed, 25 insertions, 0 deletions

diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 00fcbed1afd2..0c9b3b12652b 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -533,6 +533,31 @@ config MMC_DW_IDMAC
           Designware Mobile Storage IP block. This disables the external DMA
           interface.
 
+config MMC_DW_PLTFM
+        tristate "Synopsys Designware MCI Support as platform device"
+        depends on MMC_DW
+        default y
+        help
+          This selects the common helper functions support for Host Controller
+          Interface based platform driver. Please select this option if the IP
+          is present as a platform device. This is the common interface for the
+          Synopsys Designware IP.
+
+          If you have a controller with this interface, say Y or M here.
+
+          If unsure, say Y.
+
+config MMC_DW_PCI
+        tristate "Synopsys Designware MCI support on PCI bus"
+        depends on MMC_DW && PCI
+        help
+          This selects the PCI bus for the Synopsys Designware Mobile Storage IP.
+          Select this option if the IP is present on PCI platform.
+
+          If you have a controller with this interface, say Y or M here.
+
+          If unsure, say N.
+
 config MMC_SH_MMCIF
         tristate "SuperH Internal MMCIF support"
         depends on MMC_BLOCK && (SUPERH || ARCH_SHMOBILE)