76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
// SPDX-License-Identifier: LGPL-2.1+
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// Copyright (C) 2022, Linaro Ltd - Daniel Lezcano <daniel.lezcano@linaro.org>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <thermal.h>
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#include "thermal_nl.h"
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static int handle_thermal_sample(struct nl_msg *n, void *arg)
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{
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struct nlmsghdr *nlh = nlmsg_hdr(n);
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struct genlmsghdr *genlhdr = genlmsg_hdr(nlh);
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struct nlattr *attrs[THERMAL_GENL_ATTR_MAX + 1];
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struct thermal_handler_param *thp = arg;
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struct thermal_handler *th = thp->th;
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genlmsg_parse(nlh, 0, attrs, THERMAL_GENL_ATTR_MAX, NULL);
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switch (genlhdr->cmd) {
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case THERMAL_GENL_SAMPLING_TEMP:
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return th->ops->sampling.tz_temp(
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nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]),
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nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TEMP]), arg);
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default:
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return THERMAL_ERROR;
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}
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}
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thermal_error_t thermal_sampling_handle(struct thermal_handler *th, void *arg)
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{
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struct thermal_handler_param thp = { .th = th, .arg = arg };
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if (!th)
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return THERMAL_ERROR;
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if (nl_cb_set(th->cb_sampling, NL_CB_VALID, NL_CB_CUSTOM,
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handle_thermal_sample, &thp))
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return THERMAL_ERROR;
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return nl_recvmsgs(th->sk_sampling, th->cb_sampling);
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}
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int thermal_sampling_fd(struct thermal_handler *th)
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{
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if (!th)
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return -1;
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return nl_socket_get_fd(th->sk_sampling);
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}
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thermal_error_t thermal_sampling_exit(struct thermal_handler *th)
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{
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if (nl_unsubscribe_thermal(th->sk_sampling, th->cb_sampling,
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THERMAL_GENL_SAMPLING_GROUP_NAME))
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return THERMAL_ERROR;
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nl_thermal_disconnect(th->sk_sampling, th->cb_sampling);
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return THERMAL_SUCCESS;
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}
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thermal_error_t thermal_sampling_init(struct thermal_handler *th)
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{
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if (nl_thermal_connect(&th->sk_sampling, &th->cb_sampling))
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return THERMAL_ERROR;
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if (nl_subscribe_thermal(th->sk_sampling, th->cb_sampling,
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THERMAL_GENL_SAMPLING_GROUP_NAME))
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return THERMAL_ERROR;
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return THERMAL_SUCCESS;
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}
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