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authorRafał Miłecki <zajec5@gmail.com>2015-12-09 23:36:51 +0100
committerKalle Valo <kvalo@codeaurora.org>2015-12-16 16:36:25 +0200
commit541c9a84cd85203244307d9ebb821102eed82789 (patch)
tree55c3f1cfe18cf4c14c26dd4772241fcc564281fe /drivers/ssb
parentd0ca9900675860d2857f40df88393b199a558634 (diff)
ssb: pick SoC invariants code from MIPS BCM47xx arch
There is code in ssb fetching "invariants" that is basically a set of board specific data. Every host requires its own implementation of reading function. In ssb we have support for PCI, PCMCIA & SDIO. For some (historical?) reason code reading "invariants" for SoC was placed in arch code and provided by a callback. This is not needed nowadays, so lets move that into ssb. This way we keep all "invariants" functions in a single module making code cleaner. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/ssb')
-rw-r--r--drivers/ssb/Kconfig2
-rw-r--r--drivers/ssb/host_soc.c37
-rw-r--r--drivers/ssb/main.c5
-rw-r--r--drivers/ssb/ssb_private.h3
4 files changed, 43 insertions, 4 deletions
diff --git a/drivers/ssb/Kconfig b/drivers/ssb/Kconfig
index 149214beeda9..0c675861623f 100644
--- a/drivers/ssb/Kconfig
+++ b/drivers/ssb/Kconfig
@@ -82,7 +82,7 @@ config SSB_SDIOHOST
config SSB_HOST_SOC
bool "Support for SSB bus on SoC"
- depends on SSB
+ depends on SSB && BCM47XX_NVRAM
help
Host interface for a SSB directly mapped into memory. This is
for some Broadcom SoCs from the BCM47xx and BCM53xx lines.
diff --git a/drivers/ssb/host_soc.c b/drivers/ssb/host_soc.c
index c809f255af34..d62992dc08b2 100644
--- a/drivers/ssb/host_soc.c
+++ b/drivers/ssb/host_soc.c
@@ -8,6 +8,7 @@
* Licensed under the GNU/GPL. See COPYING for details.
*/
+#include <linux/bcm47xx_nvram.h>
#include <linux/ssb/ssb.h>
#include "ssb_private.h"
@@ -171,3 +172,39 @@ const struct ssb_bus_ops ssb_host_soc_ops = {
.block_write = ssb_host_soc_block_write,
#endif
};
+
+int ssb_host_soc_get_invariants(struct ssb_bus *bus,
+ struct ssb_init_invariants *iv)
+{
+ char buf[20];
+ int len, err;
+
+ /* Fill boardinfo structure */
+ memset(&iv->boardinfo, 0, sizeof(struct ssb_boardinfo));
+
+ len = bcm47xx_nvram_getenv("boardvendor", buf, sizeof(buf));
+ if (len > 0) {
+ err = kstrtou16(strim(buf), 0, &iv->boardinfo.vendor);
+ if (err)
+ pr_warn("Couldn't parse nvram board vendor entry with value \"%s\"\n",
+ buf);
+ }
+ if (!iv->boardinfo.vendor)
+ iv->boardinfo.vendor = SSB_BOARDVENDOR_BCM;
+
+ len = bcm47xx_nvram_getenv("boardtype", buf, sizeof(buf));
+ if (len > 0) {
+ err = kstrtou16(strim(buf), 0, &iv->boardinfo.type);
+ if (err)
+ pr_warn("Couldn't parse nvram board type entry with value \"%s\"\n",
+ buf);
+ }
+
+ memset(&iv->sprom, 0, sizeof(struct ssb_sprom));
+ ssb_fill_sprom_with_fallback(bus, &iv->sprom);
+
+ if (bcm47xx_nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
+ iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);
+
+ return 0;
+}
diff --git a/drivers/ssb/main.c b/drivers/ssb/main.c
index 5d1e9a0fc389..cde5ff7529eb 100644
--- a/drivers/ssb/main.c
+++ b/drivers/ssb/main.c
@@ -762,15 +762,14 @@ EXPORT_SYMBOL(ssb_bus_sdiobus_register);
#endif /* CONFIG_SSB_PCMCIAHOST */
#ifdef CONFIG_SSB_HOST_SOC
-int ssb_bus_ssbbus_register(struct ssb_bus *bus, unsigned long baseaddr,
- ssb_invariants_func_t get_invariants)
+int ssb_bus_host_soc_register(struct ssb_bus *bus, unsigned long baseaddr)
{
int err;
bus->bustype = SSB_BUSTYPE_SSB;
bus->ops = &ssb_host_soc_ops;
- err = ssb_bus_register(bus, get_invariants, baseaddr);
+ err = ssb_bus_register(bus, ssb_host_soc_get_invariants, baseaddr);
if (!err) {
ssb_info("Sonics Silicon Backplane found at address 0x%08lX\n",
baseaddr);
diff --git a/drivers/ssb/ssb_private.h b/drivers/ssb/ssb_private.h
index 15bfd5c7d2d7..c2f5d3969c8b 100644
--- a/drivers/ssb/ssb_private.h
+++ b/drivers/ssb/ssb_private.h
@@ -163,6 +163,9 @@ static inline int ssb_sdio_init(struct ssb_bus *bus)
#ifdef CONFIG_SSB_HOST_SOC
extern const struct ssb_bus_ops ssb_host_soc_ops;
+
+extern int ssb_host_soc_get_invariants(struct ssb_bus *bus,
+ struct ssb_init_invariants *iv);
#endif
/* scan.c */

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