diff options
| -rw-r--r-- | drivers/firmware/tegra/bpmp.c | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/drivers/firmware/tegra/bpmp.c b/drivers/firmware/tegra/bpmp.c index 191f8a91c466..689478b92bce 100644 --- a/drivers/firmware/tegra/bpmp.c +++ b/drivers/firmware/tegra/bpmp.c @@ -547,8 +547,9 @@ static int tegra_bpmp_ping(struct tegra_bpmp *bpmp) return err; } -static int tegra_bpmp_get_firmware_tag(struct tegra_bpmp *bpmp, char *tag, - size_t size) +/* deprecated version of tag query */ +static int tegra_bpmp_get_firmware_tag_old(struct tegra_bpmp *bpmp, char *tag, + size_t size) { struct mrq_query_tag_request request; struct tegra_bpmp_message msg; @@ -585,6 +586,37 @@ static int tegra_bpmp_get_firmware_tag(struct tegra_bpmp *bpmp, char *tag, return err; } +static int tegra_bpmp_get_firmware_tag(struct tegra_bpmp *bpmp, char *tag, + size_t size) +{ + if (tegra_bpmp_mrq_is_supported(bpmp, MRQ_QUERY_FW_TAG)) { + struct mrq_query_fw_tag_response resp; + struct tegra_bpmp_message msg = { + .mrq = MRQ_QUERY_FW_TAG, + .rx = { + .data = &resp, + .size = sizeof(resp), + }, + }; + int err; + + if (size != sizeof(resp.tag)) + return -EINVAL; + + err = tegra_bpmp_transfer(bpmp, &msg); + + if (err) + return err; + if (msg.rx.ret < 0) + return -EINVAL; + + memcpy(tag, resp.tag, sizeof(resp.tag)); + return 0; + } + + return tegra_bpmp_get_firmware_tag_old(bpmp, tag, size); +} + static void tegra_bpmp_channel_signal(struct tegra_bpmp_channel *channel) { unsigned long flags = channel->ob->flags; |