diff options
Diffstat (limited to 'package/kernel/mac80211/patches/331-v4.18-0005-brcmfmac-add-debugfs-entry-for-reading-firmware-capa.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/331-v4.18-0005-brcmfmac-add-debugfs-entry-for-reading-firmware-capa.patch | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/331-v4.18-0005-brcmfmac-add-debugfs-entry-for-reading-firmware-capa.patch b/package/kernel/mac80211/patches/331-v4.18-0005-brcmfmac-add-debugfs-entry-for-reading-firmware-capa.patch new file mode 100644 index 0000000000..71ed06786d --- /dev/null +++ b/package/kernel/mac80211/patches/331-v4.18-0005-brcmfmac-add-debugfs-entry-for-reading-firmware-capa.patch @@ -0,0 +1,75 @@ +From 88001968245c42c26416476bf0ef960442371605 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl> +Date: Mon, 14 May 2018 08:48:20 +0200 +Subject: [PATCH] brcmfmac: add debugfs entry for reading firmware capabilities +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +This allows reading all capabilities as reported by a firmware. They are +printed using native (raw) names, just like developers like it the most. +It's how firmware reports support for various features, e.g. supported +modes, supported standards, power saving details, max BSS-es. + +Access to all that info is useful for trying new firmwares, comparing +them and debugging features AKA bugs. + +Signed-off-by: Rafał Miłecki <rafal@milecki.pl> +Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com> +Signed-off-by: Kalle Valo <kvalo@codeaurora.org> +--- + .../wireless/broadcom/brcm80211/brcmfmac/feature.c | 36 ++++++++++++++++++++++ + 1 file changed, 36 insertions(+) + +--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/feature.c ++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/feature.c +@@ -138,6 +138,41 @@ static void brcmf_feat_firmware_capabili + } + } + ++/** ++ * brcmf_feat_fwcap_debugfs_read() - expose firmware capabilities to debugfs. ++ * ++ * @seq: sequence for debugfs entry. ++ * @data: raw data pointer. ++ */ ++static int brcmf_feat_fwcap_debugfs_read(struct seq_file *seq, void *data) ++{ ++ struct brcmf_bus *bus_if = dev_get_drvdata(seq->private); ++ struct brcmf_if *ifp = brcmf_get_ifp(bus_if->drvr, 0); ++ char caps[MAX_CAPS_BUFFER_SIZE + 1] = { }; ++ char *tmp; ++ int err; ++ ++ err = brcmf_fil_iovar_data_get(ifp, "cap", caps, sizeof(caps)); ++ if (err) { ++ brcmf_err("could not get firmware cap (%d)\n", err); ++ return err; ++ } ++ ++ /* Put every capability in a new line */ ++ for (tmp = caps; *tmp; tmp++) { ++ if (*tmp == ' ') ++ *tmp = '\n'; ++ } ++ ++ /* Usually there is a space at the end of capabilities string */ ++ seq_printf(seq, "%s", caps); ++ /* So make sure we don't print two line breaks */ ++ if (tmp > caps && *(tmp - 1) != '\n') ++ seq_printf(seq, "\n"); ++ ++ return 0; ++} ++ + void brcmf_feat_attach(struct brcmf_pub *drvr) + { + struct brcmf_if *ifp = brcmf_get_ifp(drvr, 0); +@@ -196,6 +231,7 @@ void brcmf_feat_attach(struct brcmf_pub + } + + brcmf_debugfs_add_entry(drvr, "features", brcmf_feat_debugfs_read); ++ brcmf_debugfs_add_entry(drvr, "fwcap", brcmf_feat_fwcap_debugfs_read); + } + + bool brcmf_feat_is_enabled(struct brcmf_if *ifp, enum brcmf_feat_id id) |