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brcmfmac: Add support for host platform NVRAM loading.

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Host platforms such as routers supported by OpenWRT can
support NVRAM reading directly from internal NVRAM store.
With this patch the nvram load routines will fall back to
this method when there is no nvram file and support is
available in the kernel.

Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Daniel (Deognyoun) Kim <dekim@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Hante Meuleman 2015-08-20 22:06:08 +02:00 committed by Kalle Valo
parent fc7c3ad525
commit 4e70f2144d
1 changed files with 25 additions and 16 deletions
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41
drivers/net/wireless/brcm80211/brcmfmac/firmware.c
View File

@ -19,6 +19,7 @@
#include <linux/device.h>
#include <linux/firmware.h>
#include <linux/module.h>
#include <linux/bcm47xx_nvram.h>
#include "debug.h"
#include "firmware.h"
@ -426,19 +427,33 @@ static void brcmf_fw_request_nvram_done(const struct firmware *fw, void *ctx)
struct brcmf_fw *fwctx = ctx;
u32 nvram_length = 0;
void *nvram = NULL;
u8 *data = NULL;
size_t data_len;
bool raw_nvram;
brcmf_dbg(TRACE, "enter: dev=%s\n", dev_name(fwctx->dev));
if (!fw && !(fwctx->flags & BRCMF_FW_REQ_NV_OPTIONAL))
goto fail;
if (fw) {
nvram = brcmf_fw_nvram_strip(fw->data, fw->size, &nvram_length,
fwctx->domain_nr, fwctx->bus_nr);
release_firmware(fw);
if (!nvram && !(fwctx->flags & BRCMF_FW_REQ_NV_OPTIONAL))
if (fw && fw->data) {
data = (u8 *)fw->data;
data_len = fw->size;
raw_nvram = false;
} else {
data = bcm47xx_nvram_get_contents(&data_len);
if (!data && !(fwctx->flags & BRCMF_FW_REQ_NV_OPTIONAL))
goto fail;
raw_nvram = true;
}
if (data)
nvram = brcmf_fw_nvram_strip(data, data_len, &nvram_length,
fwctx->domain_nr, fwctx->bus_nr);
if (raw_nvram)
bcm47xx_nvram_release_contents(data);
if (fw)
release_firmware(fw);
if (!nvram && !(fwctx->flags & BRCMF_FW_REQ_NV_OPTIONAL))
goto fail;
fwctx->done(fwctx->dev, fwctx->code, nvram, nvram_length);
kfree(fwctx);
return;
@ -473,15 +488,9 @@ static void brcmf_fw_request_code_done(const struct firmware *fw, void *ctx)
if (!ret)
return;
/* when nvram is optional call .done() callback here */
if (fwctx->flags & BRCMF_FW_REQ_NV_OPTIONAL) {
fwctx->done(fwctx->dev, fw, NULL, 0);
kfree(fwctx);
return;
}
brcmf_fw_request_nvram_done(NULL, fwctx);
return;
/* failed nvram request */
release_firmware(fw);
fail:
brcmf_dbg(TRACE, "failed: dev=%s\n", dev_name(fwctx->dev));
device_release_driver(fwctx->dev);