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mac80211: add brcmfmac patch reading NVRAM from platform

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This allows e.g. BCM43602 to work out of box, without dumping a proper
MTD partition to /lib/firmware/ NVRAM file.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 45931
This commit is contained in:
Rafał Miłecki 2015-06-08 15:17:35 +00:00
parent d5542640d4
commit 1756869a54
1 changed files with 80 additions and 0 deletions
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80
package/kernel/mac80211/patches/860-brcmfmac-use-bcm47xx-platform-NVRAM-as-fallback.patch Normal file
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@ -0,0 +1,80 @@
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Mon, 8 Jun 2015 16:59:31 +0200
Subject: [PATCH] brcmfmac: use bcm47xx platform NVRAM as fallback
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
---
--- a/drivers/net/wireless/brcm80211/brcmfmac/firmware.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/firmware.c
@@ -19,6 +19,9 @@
#include <linux/device.h>
#include <linux/firmware.h>
#include <linux/module.h>
+#if IS_ENABLED(CONFIG_BCM47XX_NVRAM)
+#include <linux/bcm47xx_nvram.h>
+#endif
#include "debug.h"
#include "firmware.h"
@@ -424,17 +427,42 @@ struct brcmf_fw {
static void brcmf_fw_request_nvram_done(const struct firmware *fw, void *ctx)
{
struct brcmf_fw *fwctx = ctx;
+#if IS_ENABLED(CONFIG_BCM47XX_NVRAM)
+ const u8 *bcm47xx_nvram = NULL;
+ size_t bcm47xx_nvram_len;
+#endif
+ const u8 *data = NULL;
+ size_t data_len;
u32 nvram_length = 0;
void *nvram = NULL;
brcmf_dbg(TRACE, "enter: dev=%s\n", dev_name(fwctx->dev));
- if (!fw && !(fwctx->flags & BRCMF_FW_REQ_NV_OPTIONAL))
+ if (fw) {
+ data = fw->data;
+ data_len = fw->size;
+ }
+#if IS_ENABLED(CONFIG_BCM47XX_NVRAM)
+ else {
+ bcm47xx_nvram = bcm47xx_nvram_get_contents(&bcm47xx_nvram_len);
+ if (bcm47xx_nvram) {
+ data = bcm47xx_nvram;
+ data_len = bcm47xx_nvram_len;
+ brcmf_err("Found platform NVRAM (%zu B)\n", data_len);
+ }
+ }
+#endif
+ if (!data && !(fwctx->flags & BRCMF_FW_REQ_NV_OPTIONAL))
goto fail;
- if (fw) {
- nvram = brcmf_fw_nvram_strip(fw->data, fw->size, &nvram_length,
+ if (data) {
+ nvram = brcmf_fw_nvram_strip(data, data_len, &nvram_length,
fwctx->domain_nr, fwctx->bus_nr);
- release_firmware(fw);
+ if (fw)
+ release_firmware(fw);
+#if IS_ENABLED(CONFIG_BCM47XX_NVRAM)
+ if (bcm47xx_nvram)
+ bcm47xx_nvram_release_contents(bcm47xx_nvram);
+#endif
if (!nvram && !(fwctx->flags & BRCMF_FW_REQ_NV_OPTIONAL))
goto fail;
}
--- a/drivers/net/wireless/brcm80211/brcmfmac/debug.h
+++ b/drivers/net/wireless/brcm80211/brcmfmac/debug.h
@@ -17,6 +17,8 @@
#ifndef BRCMFMAC_DEBUG_H
#define BRCMFMAC_DEBUG_H
+#include <linux/net.h>
+
/* message levels */
#define BRCMF_TRACE_VAL 0x00000002
#define BRCMF_INFO_VAL 0x00000004