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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>
hifive-unleashed-5.1
Rafał Miłecki 2013-06-18 07:33:40 +02:00 committed by John W. Linville
parent e861ef523c
commit 7b5d6043de
3 changed files with 31 additions and 0 deletions
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19
drivers/ssb/driver_chipcommon_sflash.c
View File

@ -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;

8
drivers/ssb/main.c
View File

@ -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. */

4
drivers/ssb/ssb_private.h
View File

@ -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);