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brcmfmac: Add support for first trying to get a board specific nvram file
The nvram files which some brcmfmac chips need are board-specific. To be able to distribute these as part of linux-firmware, so that devices with such a wifi chip will work OOTB, multiple (one per board) versions must co-exist under /lib/firmware. This commit adds support for callers of the brcmfmac/firmware.c code to pass in a board_type parameter through the request structure. If that parameter is set then the code will first try to load chipmodel.board_type.txt before falling back to the old chipmodel.txt name. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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parent
5b587496dc
commit
eae8e50669
2 changed files with 27 additions and 1 deletions
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@ -532,6 +532,31 @@ static int brcmf_fw_complete_request(const struct firmware *fw,
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return (cur->flags & BRCMF_FW_REQF_OPTIONAL) ? 0 : ret;
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}
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static int brcmf_fw_request_firmware(const struct firmware **fw,
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struct brcmf_fw *fwctx)
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{
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struct brcmf_fw_item *cur = &fwctx->req->items[fwctx->curpos];
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int ret;
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/* nvram files are board-specific, first try a board-specific path */
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if (cur->type == BRCMF_FW_TYPE_NVRAM && fwctx->req->board_type) {
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char alt_path[BRCMF_FW_NAME_LEN];
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strlcpy(alt_path, cur->path, BRCMF_FW_NAME_LEN);
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/* strip .txt at the end */
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alt_path[strlen(alt_path) - 4] = 0;
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strlcat(alt_path, ".", BRCMF_FW_NAME_LEN);
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strlcat(alt_path, fwctx->req->board_type, BRCMF_FW_NAME_LEN);
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strlcat(alt_path, ".txt", BRCMF_FW_NAME_LEN);
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ret = request_firmware(fw, alt_path, fwctx->dev);
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if (ret == 0)
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return ret;
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}
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return request_firmware(fw, cur->path, fwctx->dev);
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}
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static void brcmf_fw_request_done(const struct firmware *fw, void *ctx)
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{
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struct brcmf_fw *fwctx = ctx;
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@ -544,7 +569,7 @@ static void brcmf_fw_request_done(const struct firmware *fw, void *ctx)
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while (ret == 0 && ++fwctx->curpos < fwctx->req->n_items) {
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cur = &fwctx->req->items[fwctx->curpos];
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request_firmware(&fw, cur->path, fwctx->dev);
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brcmf_fw_request_firmware(&fw, fwctx);
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ret = brcmf_fw_complete_request(fw, ctx);
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}
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@ -70,6 +70,7 @@ struct brcmf_fw_request {
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u16 domain_nr;
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u16 bus_nr;
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u32 n_items;
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const char *board_type;
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struct brcmf_fw_item items[0];
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};
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