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authorRafał Miłecki <zajec5@gmail.com>2013-06-18 07:33:40 +0200
committerJohn W. Linville <linville@tuxdriver.com>2013-06-18 14:46:46 -0400
commit7b5d6043de31290de98e9232cbd9a07968aef5bd (patch)
tree228e02ecbbe6b22041b8f6a5e7eba43bb852f5f9 /drivers/ssb
parente861ef523cd91270d108edc394e648b1f9e6fbd5 (diff)
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ssb: register serial flash as platform device
This allows writing MTD driver working as a platform driver. In platform_data it will receive struct ssb_sflash, which contains all important data about flash (window, size). Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/ssb')
-rw-r--r--drivers/ssb/driver_chipcommon_sflash.c19
-rw-r--r--drivers/ssb/main.c8
-rw-r--r--drivers/ssb/ssb_private.h4
3 files changed, 31 insertions, 0 deletions
diff --git a/drivers/ssb/driver_chipcommon_sflash.c b/drivers/ssb/driver_chipcommon_sflash.c
index 205f1c499c46..e84cf04f4416 100644
--- a/drivers/ssb/driver_chipcommon_sflash.c
+++ b/drivers/ssb/driver_chipcommon_sflash.c
@@ -9,6 +9,19 @@
#include "ssb_private.h"
+static struct resource ssb_sflash_resource = {
+ .name = "ssb_sflash",
+ .start = SSB_FLASH2,
+ .end = 0,
+ .flags = IORESOURCE_MEM | IORESOURCE_READONLY,
+};
+
+struct platform_device ssb_sflash_dev = {
+ .name = "ssb_sflash",
+ .resource = &ssb_sflash_resource,
+ .num_resources = 1,
+};
+
struct ssb_sflash_tbl_e {
char *name;
u32 id;
@@ -141,6 +154,12 @@ int ssb_sflash_init(struct ssb_chipcommon *cc)
pr_info("Found %s serial flash (blocksize: 0x%X, blocks: %d)\n",
e->name, e->blocksize, e->numblocks);
+ /* Prepare platform device, but don't register it yet. It's too early,
+ * malloc (required by device_private_init) is not available yet. */
+ ssb_sflash_dev.resource[0].end = ssb_sflash_dev.resource[0].start +
+ sflash->size;
+ ssb_sflash_dev.dev.platform_data = sflash;
+
pr_err("Serial flash support is not implemented yet!\n");
return -ENOTSUPP;
diff --git a/drivers/ssb/main.c b/drivers/ssb/main.c
index 812775a4bfb6..e55ddf7cd7c2 100644
--- a/drivers/ssb/main.c
+++ b/drivers/ssb/main.c
@@ -553,6 +553,14 @@ static int ssb_devices_register(struct ssb_bus *bus)
}
#endif
+#ifdef CONFIG_SSB_SFLASH
+ if (bus->mipscore.sflash.present) {
+ err = platform_device_register(&ssb_sflash_dev);
+ if (err)
+ pr_err("Error registering serial flash\n");
+ }
+#endif
+
return 0;
error:
/* Unwind the already registered devices. */
diff --git a/drivers/ssb/ssb_private.h b/drivers/ssb/ssb_private.h
index 4671f17f09af..eb507a50a564 100644
--- a/drivers/ssb/ssb_private.h
+++ b/drivers/ssb/ssb_private.h
@@ -243,6 +243,10 @@ static inline int ssb_sflash_init(struct ssb_chipcommon *cc)
extern struct platform_device ssb_pflash_dev;
#endif
+#ifdef CONFIG_SSB_SFLASH
+extern struct platform_device ssb_sflash_dev;
+#endif
+
#ifdef CONFIG_SSB_DRIVER_EXTIF
extern u32 ssb_extif_watchdog_timer_set_wdt(struct bcm47xx_wdt *wdt, u32 ticks);
extern u32 ssb_extif_watchdog_timer_set_ms(struct bcm47xx_wdt *wdt, u32 ms);