bcma: move parallel flash support to separated file

This follows the way of handling other flashes and cleans code a bit. As
next task we will want to move flash code to ChipCommon driver as:
1) Flash controllers are accesible using ChipCommon registers
2) This code isn't MIPS specific
This change prepares bcma for that.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

6 files changed, 72 insertions, 38 deletions

diff --git a/drivers/bcma/Kconfig b/drivers/bcma/Kconfig
index 023d448ed3fa..efdc2ae8441a 100644
--- a/drivers/bcma/Kconfig
+++ b/drivers/bcma/Kconfig
@@ -70,6 +70,11 @@ config BCMA_DRIVER_MIPS
 
           If unsure, say N
 
+config BCMA_PFLASH
+        bool
+        depends on BCMA_DRIVER_MIPS
+        default y
+
 config BCMA_SFLASH
         bool
         depends on BCMA_DRIVER_MIPS
diff --git a/drivers/bcma/Makefile b/drivers/bcma/Makefile
index f32af9b76bcd..087948a1d20d 100644
--- a/drivers/bcma/Makefile
+++ b/drivers/bcma/Makefile
@@ -1,6 +1,7 @@
 bcma-y                                  += main.o scan.o core.o sprom.o
 bcma-y                                  += driver_chipcommon.o driver_chipcommon_pmu.o
 bcma-y                                  += driver_chipcommon_b.o
+bcma-$(CONFIG_BCMA_PFLASH)              += driver_chipcommon_pflash.o
 bcma-$(CONFIG_BCMA_SFLASH)              += driver_chipcommon_sflash.o
 bcma-$(CONFIG_BCMA_NFLASH)              += driver_chipcommon_nflash.o
 bcma-$(CONFIG_BCMA_DRIVER_PCI)          += driver_pci.o
diff --git a/drivers/bcma/bcma_private.h b/drivers/bcma/bcma_private.h
index 7e4ddfb076d3..eda09090cb52 100644
--- a/drivers/bcma/bcma_private.h
+++ b/drivers/bcma/bcma_private.h
@@ -47,9 +47,6 @@ int bcma_sprom_get(struct bcma_bus *bus);
 void bcma_core_chipcommon_early_init(struct bcma_drv_cc *cc);
 void bcma_core_chipcommon_init(struct bcma_drv_cc *cc);
 void bcma_chipco_bcm4331_ext_pa_lines_ctl(struct bcma_drv_cc *cc, bool enable);
-#ifdef CONFIG_BCMA_DRIVER_MIPS
-extern struct platform_device bcma_pflash_dev;
-#endif /* CONFIG_BCMA_DRIVER_MIPS */
 
 /* driver_chipcommon_b.c */
 int bcma_core_chipcommon_b_init(struct bcma_drv_cc_b *ccb);
@@ -61,6 +58,21 @@ void bcma_pmu_init(struct bcma_drv_cc *cc);
 u32 bcma_pmu_get_alp_clock(struct bcma_drv_cc *cc);
 u32 bcma_pmu_get_cpu_clock(struct bcma_drv_cc *cc);
 
+/**************************************************
+ * driver_chipcommon_sflash.c
+ **************************************************/
+
+#ifdef CONFIG_BCMA_PFLASH
+extern struct platform_device bcma_pflash_dev;
+int bcma_pflash_init(struct bcma_drv_cc *cc);
+#else
+static inline int bcma_pflash_init(struct bcma_drv_cc *cc)
+{
+        bcma_err(cc->core->bus, "Parallel flash not supported\n");
+        return 0;
+}
+#endif /* CONFIG_BCMA_PFLASH */
+
 #ifdef CONFIG_BCMA_SFLASH
 /* driver_chipcommon_sflash.c */
 int bcma_sflash_init(struct bcma_drv_cc *cc);
diff --git a/drivers/bcma/driver_chipcommon_pflash.c b/drivers/bcma/driver_chipcommon_pflash.c
new file mode 100644
index 000000000000..3b497c9ee0d4
--- /dev/null
+++ b/drivers/bcma/driver_chipcommon_pflash.c
@@ -0,0 +1,49 @@
+/*
+ * Broadcom specific AMBA
+ * ChipCommon parallel flash
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+#include "bcma_private.h"
+
+#include <linux/bcma/bcma.h>
+#include <linux/mtd/physmap.h>
+#include <linux/platform_device.h>
+
+static const char * const part_probes[] = { "bcm47xxpart", NULL };
+
+static struct physmap_flash_data bcma_pflash_data = {
+        .part_probe_types       = part_probes,
+};
+
+static struct resource bcma_pflash_resource = {
+        .name   = "bcma_pflash",
+        .flags  = IORESOURCE_MEM,
+};
+
+struct platform_device bcma_pflash_dev = {
+        .name           = "physmap-flash",
+        .dev            = {
+                .platform_data  = &bcma_pflash_data,
+        },
+        .resource       = &bcma_pflash_resource,
+        .num_resources  = 1,
+};
+
+int bcma_pflash_init(struct bcma_drv_cc *cc)
+{
+        struct bcma_pflash *pflash = &cc->pflash;
+
+        pflash->present = true;
+
+        if (!(bcma_read32(cc->core, BCMA_CC_FLASH_CFG) & BCMA_CC_FLASH_CFG_DS))
+                bcma_pflash_data.width = 1;
+        else
+                bcma_pflash_data.width = 2;
+
+        bcma_pflash_resource.start = BCMA_SOC_FLASH2;
+        bcma_pflash_resource.end = BCMA_SOC_FLASH2 + BCMA_SOC_FLASH2_SZ;
+
+        return 0;
+}
diff --git a/drivers/bcma/driver_mips.c b/drivers/bcma/driver_mips.c
index 20c134c016dc..967b0e85e2cc 100644
--- a/drivers/bcma/driver_mips.c
+++ b/drivers/bcma/driver_mips.c
@@ -14,8 +14,6 @@
 
 #include <linux/bcma/bcma.h>
 
-#include <linux/mtd/physmap.h>
-#include <linux/platform_device.h>
 #include <linux/serial.h>
 #include <linux/serial_core.h>
 #include <linux/serial_reg.h>
@@ -32,26 +30,6 @@ enum bcma_boot_dev {
         BCMA_BOOT_DEV_NAND,
 };
 
-static const char * const part_probes[] = { "bcm47xxpart", NULL };
-
-static struct physmap_flash_data bcma_pflash_data = {
-        .part_probe_types       = part_probes,
-};
-
-static struct resource bcma_pflash_resource = {
-        .name   = "bcma_pflash",
-        .flags  = IORESOURCE_MEM,
-};
-
-struct platform_device bcma_pflash_dev = {
-        .name           = "physmap-flash",
-        .dev            = {
-                .platform_data  = &bcma_pflash_data,
-        },
-        .resource       = &bcma_pflash_resource,
-        .num_resources  = 1,
-};
-
 /* The 47162a0 hangs when reading MIPS DMP registers registers */
 static inline bool bcma_core_mips_bcm47162a0_quirk(struct bcma_device *dev)
 {
@@ -276,7 +254,6 @@ static void bcma_core_mips_flash_detect(struct bcma_drv_mips *mcore)
 {
         struct bcma_bus *bus = mcore->core->bus;
         struct bcma_drv_cc *cc = &bus->drv_cc;
-        struct bcma_pflash *pflash = &cc->pflash;
         enum bcma_boot_dev boot_dev;
 
         switch (cc->capabilities & BCMA_CC_CAP_FLASHT) {
@@ -287,17 +264,7 @@ static void bcma_core_mips_flash_detect(struct bcma_drv_mips *mcore)
                 break;
         case BCMA_CC_FLASHT_PARA:
                 bcma_debug(bus, "Found parallel flash\n");
-                pflash->present = true;
-
-                if ((bcma_read32(cc->core, BCMA_CC_FLASH_CFG) &
-                     BCMA_CC_FLASH_CFG_DS) == 0)
-                        bcma_pflash_data.width = 1;
-                else
-                        bcma_pflash_data.width = 2;
-
-                bcma_pflash_resource.start = BCMA_SOC_FLASH2;
-                bcma_pflash_resource.end = BCMA_SOC_FLASH2 + BCMA_SOC_FLASH2_SZ;
-
+                bcma_pflash_init(cc);
                 break;
         default:
                 bcma_err(bus, "Flash type not supported\n");
diff --git a/drivers/bcma/main.c b/drivers/bcma/main.c
index c466f752b067..786be8fed39e 100644
--- a/drivers/bcma/main.c
+++ b/drivers/bcma/main.c
@@ -350,7 +350,7 @@ static int bcma_register_devices(struct bcma_bus *bus)
                 bcma_register_core(bus, core);
         }
 
-#ifdef CONFIG_BCMA_DRIVER_MIPS
+#ifdef CONFIG_BCMA_PFLASH
         if (bus->drv_cc.pflash.present) {
                 err = platform_device_register(&bcma_pflash_dev);
                 if (err)