bcma: add place for flash memory support

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

6 files changed, 84 insertions, 3 deletions

diff --git a/drivers/bcma/Kconfig b/drivers/bcma/Kconfig
index 9319cde8d751..06b3207adebd 100644
--- a/drivers/bcma/Kconfig
+++ b/drivers/bcma/Kconfig
@@ -46,6 +46,16 @@ config BCMA_DRIVER_MIPS
 
           If unsure, say N
 
+config BCMA_SFLASH
+        bool
+        depends on BCMA_DRIVER_MIPS && BROKEN
+        default y
+
+config BCMA_NFLASH
+        bool
+        depends on BCMA_DRIVER_MIPS && BROKEN
+        default y
+
 config BCMA_DRIVER_GMAC_CMN
         bool "BCMA Broadcom GBIT MAC COMMON core driver"
         depends on BCMA
diff --git a/drivers/bcma/Makefile b/drivers/bcma/Makefile
index d13803faf1d6..8ad42d41b2f2 100644
--- a/drivers/bcma/Makefile
+++ b/drivers/bcma/Makefile
@@ -1,5 +1,7 @@
 bcma-y                                  += main.o scan.o core.o sprom.o
 bcma-y                                  += driver_chipcommon.o driver_chipcommon_pmu.o
+bcma-$(CONFIG_BCMA_SFLASH)              += driver_chipcommon_sflash.o
+bcma-$(CONFIG_BCMA_NFLASH)              += driver_chipcommon_nflash.o
 bcma-y                                  += driver_pci.o
 bcma-$(CONFIG_BCMA_DRIVER_PCI_HOSTMODE) += driver_pci_host.o
 bcma-$(CONFIG_BCMA_DRIVER_MIPS)         += driver_mips.o
diff --git a/drivers/bcma/bcma_private.h b/drivers/bcma/bcma_private.h
index f6589eb7c45f..3cf9cc923cd2 100644
--- a/drivers/bcma/bcma_private.h
+++ b/drivers/bcma/bcma_private.h
@@ -51,6 +51,28 @@ void bcma_chipco_serial_init(struct bcma_drv_cc *cc);
 u32 bcma_pmu_alp_clock(struct bcma_drv_cc *cc);
 u32 bcma_pmu_get_clockcpu(struct bcma_drv_cc *cc);
 
+#ifdef CONFIG_BCMA_SFLASH
+/* driver_chipcommon_sflash.c */
+int bcma_sflash_init(struct bcma_drv_cc *cc);
+#else
+static inline int bcma_sflash_init(struct bcma_drv_cc *cc)
+{
+        bcma_err(cc->core->bus, "Serial flash not supported\n");
+        return 0;
+}
+#endif /* CONFIG_BCMA_SFLASH */
+
+#ifdef CONFIG_BCMA_NFLASH
+/* driver_chipcommon_nflash.c */
+int bcma_nflash_init(struct bcma_drv_cc *cc);
+#else
+static inline int bcma_nflash_init(struct bcma_drv_cc *cc)
+{
+        bcma_err(cc->core->bus, "NAND flash not supported\n");
+        return 0;
+}
+#endif /* CONFIG_BCMA_NFLASH */
+
 #ifdef CONFIG_BCMA_HOST_PCI
 /* host_pci.c */
 extern int __init bcma_host_pci_init(void);
diff --git a/drivers/bcma/driver_chipcommon_nflash.c b/drivers/bcma/driver_chipcommon_nflash.c
new file mode 100644
index 000000000000..574d62435bc2
--- /dev/null
+++ b/drivers/bcma/driver_chipcommon_nflash.c
@@ -0,0 +1,19 @@
+/*
+ * Broadcom specific AMBA
+ * ChipCommon NAND flash interface
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+#include <linux/bcma/bcma.h>
+#include <linux/bcma/bcma_driver_chipcommon.h>
+#include <linux/delay.h>
+
+#include "bcma_private.h"
+
+/* Initialize NAND flash access */
+int bcma_nflash_init(struct bcma_drv_cc *cc)
+{
+        bcma_err(cc->core->bus, "NAND flash support is broken\n");
+        return 0;
+}
diff --git a/drivers/bcma/driver_chipcommon_sflash.c b/drivers/bcma/driver_chipcommon_sflash.c
new file mode 100644
index 000000000000..6e157a58a1d7
--- /dev/null
+++ b/drivers/bcma/driver_chipcommon_sflash.c
@@ -0,0 +1,19 @@
+/*
+ * Broadcom specific AMBA
+ * ChipCommon serial flash interface
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+#include <linux/bcma/bcma.h>
+#include <linux/bcma/bcma_driver_chipcommon.h>
+#include <linux/delay.h>
+
+#include "bcma_private.h"
+
+/* Initialize serial flash access */
+int bcma_sflash_init(struct bcma_drv_cc *cc)
+{
+        bcma_err(cc->core->bus, "Serial flash support is broken\n");
+        return 0;
+}
diff --git a/drivers/bcma/driver_mips.c b/drivers/bcma/driver_mips.c
index ef34ed25bf00..b013b049476d 100644
--- a/drivers/bcma/driver_mips.c
+++ b/drivers/bcma/driver_mips.c
@@ -185,10 +185,11 @@ static void bcma_core_mips_flash_detect(struct bcma_drv_mips *mcore)
         switch (bus->drv_cc.capabilities & BCMA_CC_CAP_FLASHT) {
         case BCMA_CC_FLASHT_STSER:
         case BCMA_CC_FLASHT_ATSER:
-                bcma_err(bus, "Serial flash not supported.\n");
+                bcma_debug(bus, "Found serial flash\n");
+                bcma_sflash_init(&bus->drv_cc);
                 break;
         case BCMA_CC_FLASHT_PARA:
-                bcma_info(bus, "found parallel flash.\n");
+                bcma_debug(bus, "Found parallel flash\n");
                 bus->drv_cc.pflash.window = 0x1c000000;
                 bus->drv_cc.pflash.window_size = 0x02000000;
 
@@ -199,7 +200,15 @@ static void bcma_core_mips_flash_detect(struct bcma_drv_mips *mcore)
                         bus->drv_cc.pflash.buswidth = 2;
                 break;
         default:
-                bcma_err(bus, "flash not supported.\n");
+                bcma_err(bus, "Flash type not supported\n");
+        }
+
+        if (bus->drv_cc.core->id.rev == 38 ||
+            bus->chipinfo.id == BCMA_CHIP_ID_BCM4706) {
+                if (bus->drv_cc.capabilities & BCMA_CC_CAP_NFLASH) {
+                        bcma_debug(bus, "Found NAND flash\n");
+                        bcma_nflash_init(&bus->drv_cc);
+                }
         }
 }