Release 4.15 arch/powerpc/platforms/powernv/opal-sensor.c
/*
* PowerNV sensor code
*
* Copyright (C) 2013 IBM
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/delay.h>
#include <linux/of_platform.h>
#include <asm/opal.h>
#include <asm/machdep.h>
/*
* This will return sensor information to driver based on the requested sensor
* handle. A handle is an opaque id for the powernv, read by the driver from the
* device tree..
*/
int opal_get_sensor_data(u32 sensor_hndl, u32 *sensor_data)
{
int ret, token;
struct opal_msg msg;
__be32 data;
token = opal_async_get_token_interruptible();
if (token < 0)
return token;
ret = opal_sensor_read(sensor_hndl, token, &data);
switch (ret) {
case OPAL_ASYNC_COMPLETION:
ret = opal_async_wait_response(token, &msg);
if (ret) {
pr_err("%s: Failed to wait for the async response, %d\n",
__func__, ret);
goto out;
}
ret = opal_error_code(opal_get_async_rc(msg));
*sensor_data = be32_to_cpu(data);
break;
case OPAL_SUCCESS:
ret = 0;
*sensor_data = be32_to_cpu(data);
break;
case OPAL_WRONG_STATE:
ret = -EIO;
break;
default:
ret = opal_error_code(ret);
break;
}
out:
opal_async_release_token(token);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Neelesh Gupta | 86 | 57.33% | 1 | 12.50% |
| Cédric Le Goater | 43 | 28.67% | 2 | 25.00% |
| Vipin K Parashar | 9 | 6.00% | 1 | 12.50% |
| Anton Blanchard | 7 | 4.67% | 2 | 25.00% |
| Stewart Smith | 4 | 2.67% | 1 | 12.50% |
| Suraj Jitindar Singh | 1 | 0.67% | 1 | 12.50% |
| Total | 150 | 100.00% | 8 | 100.00% |
EXPORT_SYMBOL_GPL(opal_get_sensor_data);
int __init opal_sensor_init(void)
{
struct platform_device *pdev;
struct device_node *sensor;
sensor = of_find_node_by_path("/ibm,opal/sensors");
if (!sensor) {
pr_err("Opal node 'sensors' not found\n");
return -ENODEV;
}
pdev = of_platform_device_create(sensor, "opal-sensor", NULL);
of_node_put(sensor);
return PTR_ERR_OR_ZERO(pdev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Neelesh Gupta | 62 | 98.41% | 1 | 50.00% |
| Alistair Popple | 1 | 1.59% | 1 | 50.00% |
| Total | 63 | 100.00% | 2 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Neelesh Gupta | 167 | 71.98% | 2 | 20.00% |
| Cédric Le Goater | 43 | 18.53% | 2 | 20.00% |
| Vipin K Parashar | 9 | 3.88% | 1 | 10.00% |
| Anton Blanchard | 7 | 3.02% | 2 | 20.00% |
| Stewart Smith | 4 | 1.72% | 1 | 10.00% |
| Suraj Jitindar Singh | 1 | 0.43% | 1 | 10.00% |
| Alistair Popple | 1 | 0.43% | 1 | 10.00% |
| Total | 232 | 100.00% | 10 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.