linux/drivers/thermal/imx_sc_thermal.c
Linus Torvalds df2fbf5bfa - Add the hwmon support on the i.MX SC (Anson Huang)
- Thermal framework cleanups (self-encapsulation, pointless stubs,
   private structures) (Daniel Lezcano)
 
 - Use the PM QoS frequency changes for the devfreq cooling device (Matthias
   Kaehlcke)
 
 - Remove duplicate error messages from platform_get_irq() error handling
   (Markus Elfring)
 
 - Add support for the bandgap sensors (Keerthy)
 
 - Statically initialize .get_mode/.set_mode ops (Andrzej Pietrasiewicz)
 
 - Add Renesas R-Car maintainer entry (Niklas Söderlund)
 
 - Fix error checking after calling ti_bandgap_get_sensor_data() for the TI SoC
   thermal (Sudip Mukherjee)
 
 - Add latency constraint for the idle injection, the DT binding and the change
   the registering function (Daniel Lezcano)
 
 - Convert the thermal framework binding to the Yaml schema (Amit Kucheria)
 
 - Replace zero-length array with flexible-array on i.MX 8MM (Gustavo A. R. Silva)
 
 - Thermal framework cleanups (alphabetic order for heads, replace module.h by
   export.h, make file naming consistent) (Amit Kucheria)
 
 - Merge tsens-common into the tsens driver (Amit Kucheria)
 
 - Fix platform dependency for the Qoriq driver (Geert Uytterhoeven)
 
 - Clean up the rcar_thermal_update_temp() function in the rcar thermal driver
   (Niklas Söderlund)
 
 - Fix the TMSAR register for the TMUv2 on the Qoriq platform (Yuantian Tang)
 
 - Export GDDV, OEM vendor variables, and don't require IDSP for the int340x
   thermal driver - trivial conflicts fixed (Matthew Garrett)
 -----BEGIN PGP SIGNATURE-----
 
 iQEzBAABCAAdFiEEGn3N4YVz0WNVyHskqDIjiipP6E8FAl7jra8ACgkQqDIjiipP
 6E+ugAgApBF6FsHoonWIvoSrzBrrbU2oqhEJA42Mx+iY/UnXi01I79vZ/8WpZt7M
 D1J01Kf0PUhRbywoKaoCX3Oh9ZO9PKq4N9ZC8yqdoD6GLl+rC9Wmr7Ui+c80klcv
 M9rYhpPYfNXTFj0saSbbFWNNhP4TvhzGsNj8foYVQDKyhjbSmNE5ipZlbmP23jlr
 O53SmJAwS5zxLOd8QA5nfSWP9FYYMuCR2AHj8BUCmxiAjXZLPNB/Hz2RRBr7q0MF
 zRo/4HJ04mSQYp0kluP/EBhz9g2wM/htIPyWRveB/ByKEYt3UNKjB++PJmPbu5UG
 dS3aXZhRfaPqpdsWrMB9fY7ll+oyfw==
 =T+RI
 -----END PGP SIGNATURE-----

Merge tag 'thermal-v5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux

Pull thermal updates from Daniel Lezcano:

 - Add the hwmon support on the i.MX SC (Anson Huang)

 - Thermal framework cleanups (self-encapsulation, pointless stubs,
   private structures) (Daniel Lezcano)

 - Use the PM QoS frequency changes for the devfreq cooling device
   (Matthias Kaehlcke)

 - Remove duplicate error messages from platform_get_irq() error
   handling (Markus Elfring)

 - Add support for the bandgap sensors (Keerthy)

 - Statically initialize .get_mode/.set_mode ops (Andrzej Pietrasiewicz)

 - Add Renesas R-Car maintainer entry (Niklas Söderlund)

 - Fix error checking after calling ti_bandgap_get_sensor_data() for the
   TI SoC thermal (Sudip Mukherjee)

 - Add latency constraint for the idle injection, the DT binding and the
   change the registering function (Daniel Lezcano)

 - Convert the thermal framework binding to the Yaml schema (Amit
   Kucheria)

 - Replace zero-length array with flexible-array on i.MX 8MM (Gustavo A.
   R. Silva)

 - Thermal framework cleanups (alphabetic order for heads, replace
   module.h by export.h, make file naming consistent) (Amit Kucheria)

 - Merge tsens-common into the tsens driver (Amit Kucheria)

 - Fix platform dependency for the Qoriq driver (Geert Uytterhoeven)

 - Clean up the rcar_thermal_update_temp() function in the rcar thermal
   driver (Niklas Söderlund)

 - Fix the TMSAR register for the TMUv2 on the Qoriq platform (Yuantian
   Tang)

 - Export GDDV, OEM vendor variables, and don't require IDSP for the
   int340x thermal driver - trivial conflicts fixed (Matthew Garrett)

* tag 'thermal-v5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux: (48 commits)
  thermal/int340x_thermal: Don't require IDSP to exist
  thermal/int340x_thermal: Export OEM vendor variables
  thermal/int340x_thermal: Export GDDV
  thermal: qoriq: Update the settings for TMUv2
  thermal: rcar_thermal: Clean up rcar_thermal_update_temp()
  thermal: qoriq: Add platform dependencies
  drivers: thermal: tsens: Merge tsens-common.c into tsens.c
  thermal/of: Rename of-thermal.c
  thermal/governors: Prefix all source files with gov_
  thermal/drivers/user_space: Sort headers alphabetically
  thermal/drivers/of-thermal: Sort headers alphabetically
  thermal/drivers/cpufreq_cooling: Replace module.h with export.h
  thermal/drivers/cpufreq_cooling: Sort headers alphabetically
  thermal/drivers/clock_cooling: Include export.h
  thermal/drivers/clock_cooling: Sort headers alphabetically
  thermal/drivers/thermal_hwmon: Include export.h
  thermal/drivers/thermal_hwmon: Sort headers alphabetically
  thermal/drivers/thermal_helpers: Include export.h
  thermal/drivers/thermal_helpers: Sort headers alphabetically
  thermal/core: Replace module.h with export.h
  ...
2020-06-12 14:10:21 -07:00

153 lines
3.4 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2018-2020 NXP.
*/
#include <dt-bindings/firmware/imx/rsrc.h>
#include <linux/err.h>
#include <linux/firmware/imx/sci.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/thermal.h>
#include "thermal_core.h"
#include "thermal_hwmon.h"
#define IMX_SC_MISC_FUNC_GET_TEMP 13
static struct imx_sc_ipc *thermal_ipc_handle;
struct imx_sc_sensor {
struct thermal_zone_device *tzd;
u32 resource_id;
};
struct req_get_temp {
u16 resource_id;
u8 type;
} __packed __aligned(4);
struct resp_get_temp {
s16 celsius;
s8 tenths;
} __packed __aligned(4);
struct imx_sc_msg_misc_get_temp {
struct imx_sc_rpc_msg hdr;
union {
struct req_get_temp req;
struct resp_get_temp resp;
} data;
} __packed __aligned(4);
static int imx_sc_thermal_get_temp(void *data, int *temp)
{
struct imx_sc_msg_misc_get_temp msg;
struct imx_sc_rpc_msg *hdr = &msg.hdr;
struct imx_sc_sensor *sensor = data;
int ret;
msg.data.req.resource_id = sensor->resource_id;
msg.data.req.type = IMX_SC_C_TEMP;
hdr->ver = IMX_SC_RPC_VERSION;
hdr->svc = IMX_SC_RPC_SVC_MISC;
hdr->func = IMX_SC_MISC_FUNC_GET_TEMP;
hdr->size = 2;
ret = imx_scu_call_rpc(thermal_ipc_handle, &msg, true);
if (ret) {
dev_err(&sensor->tzd->device, "read temp sensor %d failed, ret %d\n",
sensor->resource_id, ret);
return ret;
}
*temp = msg.data.resp.celsius * 1000 + msg.data.resp.tenths * 100;
return 0;
}
static const struct thermal_zone_of_device_ops imx_sc_thermal_ops = {
.get_temp = imx_sc_thermal_get_temp,
};
static int imx_sc_thermal_probe(struct platform_device *pdev)
{
struct device_node *np, *child, *sensor_np;
struct imx_sc_sensor *sensor;
int ret;
ret = imx_scu_get_handle(&thermal_ipc_handle);
if (ret)
return ret;
np = of_find_node_by_name(NULL, "thermal-zones");
if (!np)
return -ENODEV;
sensor_np = of_node_get(pdev->dev.of_node);
for_each_available_child_of_node(np, child) {
sensor = devm_kzalloc(&pdev->dev, sizeof(*sensor), GFP_KERNEL);
if (!sensor) {
of_node_put(sensor_np);
return -ENOMEM;
}
ret = thermal_zone_of_get_sensor_id(child,
sensor_np,
&sensor->resource_id);
if (ret < 0) {
dev_err(&pdev->dev,
"failed to get valid sensor resource id: %d\n",
ret);
break;
}
sensor->tzd = devm_thermal_zone_of_sensor_register(&pdev->dev,
sensor->resource_id,
sensor,
&imx_sc_thermal_ops);
if (IS_ERR(sensor->tzd)) {
dev_err(&pdev->dev, "failed to register thermal zone\n");
ret = PTR_ERR(sensor->tzd);
break;
}
if (devm_thermal_add_hwmon_sysfs(sensor->tzd))
dev_warn(&pdev->dev, "failed to add hwmon sysfs attributes\n");
}
of_node_put(sensor_np);
return ret;
}
static int imx_sc_thermal_remove(struct platform_device *pdev)
{
return 0;
}
static const struct of_device_id imx_sc_thermal_table[] = {
{ .compatible = "fsl,imx-sc-thermal", },
{}
};
MODULE_DEVICE_TABLE(of, imx_sc_thermal_table);
static struct platform_driver imx_sc_thermal_driver = {
.probe = imx_sc_thermal_probe,
.remove = imx_sc_thermal_remove,
.driver = {
.name = "imx-sc-thermal",
.of_match_table = imx_sc_thermal_table,
},
};
module_platform_driver(imx_sc_thermal_driver);
MODULE_AUTHOR("Anson Huang <Anson.Huang@nxp.com>");
MODULE_DESCRIPTION("Thermal driver for NXP i.MX SoCs with system controller");
MODULE_LICENSE("GPL v2");