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/* arch/arm/mach-msm/rpc_server_time_remote.c
*
* Copyright (C) 2007 Google, Inc.
* Copyright (c) 2009-2011 The Linux Foundation. All rights reserved.
* Author: Iliyan Malchev <ibm@android.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/err.h>
#include <mach/msm_rpcrouter.h>
#include "rpc_server_time_remote.h"
#include <linux/rtc.h>
#include <linux/android_alarm.h>
#include <linux/rtc-msm.h>
/* time_remote_mtoa server definitions. */
#define TIME_REMOTE_MTOA_PROG 0x3000005d
#define TIME_REMOTE_MTOA_VERS_OLD 0
#define TIME_REMOTE_MTOA_VERS 0x9202a8e4
#define TIME_REMOTE_MTOA_VERS_COMP 0x00010002
#define RPC_TIME_REMOTE_MTOA_NULL 0
#define RPC_TIME_TOD_SET_APPS_BASES 2
#define RPC_TIME_GET_APPS_USER_TIME 3
struct rpc_time_tod_set_apps_bases_args {
uint32_t tick;
uint64_t stamp;
};
static int read_rtc0_time(struct msm_rpc_server *server,
struct rpc_request_hdr *req,
unsigned len)
{
int err;
unsigned long tm_sec;
uint32_t size = 0;
void *reply;
uint32_t output_valid;
uint32_t rpc_status = RPC_ACCEPTSTAT_SYSTEM_ERR;
struct rtc_time tm;
struct rtc_device *rtc = rtc_class_open(CONFIG_RTC_HCTOSYS_DEVICE);
if (rtc == NULL) {
pr_err("%s: unable to open rtc device (%s)\n",
__FILE__, CONFIG_RTC_HCTOSYS_DEVICE);
goto send_reply;
}
err = rtc_read_time(rtc, &tm);
if (err) {
pr_err("%s: Error reading rtc device (%s) : %d\n",
__FILE__, CONFIG_RTC_HCTOSYS_DEVICE, err);
goto close_dev;
}
err = rtc_valid_tm(&tm);
if (err) {
pr_err("%s: Invalid RTC time (%s)\n",
__FILE__, CONFIG_RTC_HCTOSYS_DEVICE);
goto close_dev;
}
rtc_tm_to_time(&tm, &tm_sec);
rpc_status = RPC_ACCEPTSTAT_SUCCESS;
close_dev:
rtc_class_close(rtc);
send_reply:
reply = msm_rpc_server_start_accepted_reply(server, req->xid,
rpc_status);
if (rpc_status == RPC_ACCEPTSTAT_SUCCESS) {
output_valid = *((uint32_t *)(req + 1));
*(uint32_t *)reply = output_valid;
size = sizeof(uint32_t);
if (be32_to_cpu(output_valid)) {
reply += sizeof(uint32_t);
*(uint32_t *)reply = cpu_to_be32(tm_sec);
size += sizeof(uint32_t);
}
}
err = msm_rpc_server_send_accepted_reply(server, size);
if (err)
pr_err("%s: send accepted reply failed: %d\n", __func__, err);
return 1;
}
static int handle_rpc_call(struct msm_rpc_server *server,
struct rpc_request_hdr *req, unsigned len)
{
struct timespec ts, tv;
switch (req->procedure) {
case RPC_TIME_REMOTE_MTOA_NULL:
return 0;
case RPC_TIME_TOD_SET_APPS_BASES: {
struct rpc_time_tod_set_apps_bases_args *args;
args = (struct rpc_time_tod_set_apps_bases_args *)(req + 1);
args->tick = be32_to_cpu(args->tick);
args->stamp = be64_to_cpu(args->stamp);
printk(KERN_INFO "RPC_TIME_TOD_SET_APPS_BASES:\n"
"\ttick = %d\n"
"\tstamp = %lld\n",
args->tick, args->stamp);
getnstimeofday(&ts);
msmrtc_updateatsuspend(&ts);
rtc_hctosys();
getnstimeofday(&tv);
/* Update the alarm information with the new time info. */
alarm_update_timedelta(ts, tv);
return 0;
}
case RPC_TIME_GET_APPS_USER_TIME:
return read_rtc0_time(server, req, len);
default:
return -ENODEV;
}
}
static struct msm_rpc_server rpc_server[] = {
{
.prog = TIME_REMOTE_MTOA_PROG,
.vers = TIME_REMOTE_MTOA_VERS_OLD,
.rpc_call = handle_rpc_call,
},
{
.prog = TIME_REMOTE_MTOA_PROG,
.vers = TIME_REMOTE_MTOA_VERS,
.rpc_call = handle_rpc_call,
},
{
.prog = TIME_REMOTE_MTOA_PROG,
.vers = TIME_REMOTE_MTOA_VERS_COMP,
.rpc_call = handle_rpc_call,
},
};
static int __init rpc_server_init(void)
{
/* Dual server registration to support backwards compatibility vers */
int ret;
ret = msm_rpc_create_server(&rpc_server[2]);
if (ret < 0)
return ret;
ret = msm_rpc_create_server(&rpc_server[1]);
if (ret < 0)
return ret;
return msm_rpc_create_server(&rpc_server[0]);
}
module_init(rpc_server_init);
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