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[78.94.0.51]) by smtp.gmail.com with ESMTPSA id fj10-20020a1709069c8a00b00a2d0868cdf9sm2168577ejc.35.2024.01.14.04.56.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 14 Jan 2024 04:56:49 -0800 (PST) From: Naresh Solanki To: broonie@kernel.org, Liam Girdwood Cc: mazziesaccount@gmail.com, Naresh Solanki , linux-kernel@vger.kernel.org Subject: [PATCH] regulator: event: Add netlink command for event mask Date: Sun, 14 Jan 2024 18:26:44 +0530 Message-ID: <20240114125645.2356445-1-naresh.solanki@9elements.com> X-Mailer: git-send-email 2.41.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1788070632397159068 X-GMAIL-MSGID: 1788070632397159068 Add netlink command to enable perticular event(s) broadcasting instead of all regulator events. Signed-off-by: Naresh Solanki --- drivers/regulator/event.c | 28 ++++++++++++++++++++++++++++ include/uapi/regulator/regulator.h | 1 + 2 files changed, 29 insertions(+) base-commit: 94cc3087aac4103c33c6da84c092301afd783200 diff --git a/drivers/regulator/event.c b/drivers/regulator/event.c index ea3bd49544e8..8ae8e606bea8 100644 --- a/drivers/regulator/event.c +++ b/drivers/regulator/event.c @@ -14,17 +14,41 @@ static atomic_t reg_event_seqnum = ATOMIC_INIT(0); +static u64 event_mask; + static const struct genl_multicast_group reg_event_mcgrps[] = { { .name = REG_GENL_MCAST_GROUP_NAME, }, }; +static int reg_genl_cmd_doit(struct sk_buff *skb, struct genl_info *info) +{ + if (info->attrs[REG_GENL_ATTR_EVENT_MASK]) { + event_mask = nla_get_u64(info->attrs[REG_GENL_ATTR_EVENT_MASK]); + pr_info("event_mask -> %llx", event_mask); + return 0; + } + pr_warn("Unknown attribute."); + return -EOPNOTSUPP; +} + +static const struct genl_small_ops reg_genl_ops[] = { + { + .cmd = REG_GENL_CMD_EVENT, + .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, + .doit = reg_genl_cmd_doit, + } +}; + static struct genl_family reg_event_genl_family __ro_after_init = { .module = THIS_MODULE, .name = REG_GENL_FAMILY_NAME, .version = REG_GENL_VERSION, .maxattr = REG_GENL_ATTR_MAX, + .small_ops = reg_genl_ops, + .n_small_ops = ARRAY_SIZE(reg_genl_ops), .mcgrps = reg_event_mcgrps, .n_mcgrps = ARRAY_SIZE(reg_event_mcgrps), + .resv_start_op = __REG_GENL_CMD_MAX, }; int reg_generate_netlink_event(const char *reg_name, u64 event) @@ -35,6 +59,9 @@ int reg_generate_netlink_event(const char *reg_name, u64 event) void *msg_header; int size; + if (!(event_mask & event)) + return 0; + /* allocate memory */ size = nla_total_size(sizeof(struct reg_genl_event)) + nla_total_size(0); @@ -73,6 +100,7 @@ int reg_generate_netlink_event(const char *reg_name, u64 event) static int __init reg_event_genetlink_init(void) { + event_mask = 0; return genl_register_family(®_event_genl_family); } diff --git a/include/uapi/regulator/regulator.h b/include/uapi/regulator/regulator.h index 71bf71a22e7f..21ffa36e2ab7 100644 --- a/include/uapi/regulator/regulator.h +++ b/include/uapi/regulator/regulator.h @@ -69,6 +69,7 @@ struct reg_genl_event { enum { REG_GENL_ATTR_UNSPEC, REG_GENL_ATTR_EVENT, /* reg event info needed by user space */ + REG_GENL_ATTR_EVENT_MASK, /* reg event mask */ __REG_GENL_ATTR_MAX, };