git.openwrt.org Git - openwrt/staging/jow.git/blob

   1 From 716c220b4d990a4fe7800d0685ca69dee99e4e8f Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Pavel=20L=C3=B6bl?= <pavel@loebl.cz>
   3 Date: Fri, 6 May 2022 06:42:46 +0200
   4 Subject: [PATCH] brcmfmac: allow setting wlan MAC address using device tree
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 This allows firmware to provide MAC address using device tree. Like in
  10 case there is no MAC burned in wlan NVRAM.
  11
  12 Signed-off-by: Pavel Löbl <pavel@loebl.cz>
  13 Signed-off-by: Kalle Valo <kvalo@kernel.org>
  14 Link: https://lore.kernel.org/r/20220506044246.67146-1-pavel@loebl.cz
  15 ---
  16  .../broadcom/brcm80211/brcmfmac/common.c      | 23 ++++++++++++++-----
  17  .../broadcom/brcm80211/brcmfmac/common.h      |  1 +
  18  .../broadcom/brcm80211/brcmfmac/core.c        |  4 +++-
  19  .../wireless/broadcom/brcm80211/brcmfmac/of.c |  3 +++
  20  4 files changed, 24 insertions(+), 7 deletions(-)
  21
  22 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
  23 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
  24 @@ -202,13 +202,24 @@ int brcmf_c_preinit_dcmds(struct brcmf_i
  25         char *ptr;
  26         s32 err;
  27
  28 -       /* retreive mac address */
  29 -       err = brcmf_fil_iovar_data_get(ifp, "cur_etheraddr", ifp->mac_addr,
  30 -                                      sizeof(ifp->mac_addr));
  31 -       if (err < 0) {
  32 -               bphy_err(drvr, "Retrieving cur_etheraddr failed, %d\n", err);
  33 -               goto done;
  34 +       if (is_valid_ether_addr(ifp->mac_addr)) {
  35 +               /* set mac address */
  36 +               err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", ifp->mac_addr,
  37 +                                              ETH_ALEN);
  38 +               if (err < 0) {
  39 +                       bphy_err(ifp->drvr, "Setting cur_etheraddr failed, %d\n", err);
  40 +                       goto done;
  41 +               }
  42 +       } else {
  43 +               /* retrieve mac address */
  44 +               err = brcmf_fil_iovar_data_get(ifp, "cur_etheraddr", ifp->mac_addr,
  45 +                                              sizeof(ifp->mac_addr));
  46 +               if (err < 0) {
  47 +                       bphy_err(drvr, "Retrieving cur_etheraddr failed, %d\n", err);
  48 +                       goto done;
  49 +               }
  50         }
  51 +
  52         memcpy(ifp->drvr->mac, ifp->mac_addr, sizeof(ifp->drvr->mac));
  53         memcpy(ifp->drvr->wiphy->perm_addr, ifp->drvr->mac, ETH_ALEN);
  54
  55 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h
  56 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h
  57 @@ -50,6 +50,7 @@ struct brcmf_mp_device {
  58         bool            ignore_probe_fail;
  59         struct brcmfmac_pd_cc *country_codes;
  60         const char      *board_type;
  61 +       unsigned char   mac[ETH_ALEN];
  62         union {
  63                 struct brcmfmac_sdio_pd sdio;
  64         } bus;
  65 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
  66 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
  67 @@ -7,6 +7,7 @@
  68  #include <linux/etherdevice.h>
  69  #include <linux/module.h>
  70  #include <linux/inetdevice.h>
  71 +#include <linux/property.h>
  72  #include <net/cfg80211.h>
  73  #include <net/rtnetlink.h>
  74  #include <net/addrconf.h>
  75 @@ -1227,7 +1228,8 @@ static int brcmf_bus_started(struct brcm
  76         brcmf_dbg(TRACE, "\n");
  77
  78         /* add primary networking interface */
  79 -       ifp = brcmf_add_if(drvr, 0, 0, false, "wlan%d", NULL);
  80 +       ifp = brcmf_add_if(drvr, 0, 0, false, "wlan%d",
  81 +                          is_valid_ether_addr(drvr->settings->mac) ? drvr->settings->mac : NULL);
  82         if (IS_ERR(ifp))
  83                 return PTR_ERR(ifp);
  84
  85 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c
  86 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c
  87 @@ -5,6 +5,7 @@
  88  #include <linux/init.h>
  89  #include <linux/of.h>
  90  #include <linux/of_irq.h>
  91 +#include <linux/of_net.h>
  92
  93  #include <defs.h>
  94  #include "debug.h"
  95 @@ -97,6 +98,8 @@ void brcmf_of_probe(struct device *dev,
  96         if (err)
  97                 brcmf_err("failed to get OF country code map (err=%d)\n", err);
  98
  99 +       of_get_mac_address(np, settings->mac);
 100 +
 101         if (bus_type != BRCMF_BUSTYPE_SDIO)
 102                 return;
 103