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linux_old1/drivers/acpi/int340x_thermal.c

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ACPI: introduce ACPI int340x thermal scan handler Newer laptops and tablets that use ACPI may have thermal sensors and other devices with thermal control capabilities outside the core CPU/SOC, for thermal safety reasons. They are exposed for the OS to use via 1) INT3400 ACPI device object as the master. 2) INT3401 ~ INT340B ACPI device objects as the slaves. This patch introduces a scan handler to enumerate the INT3400 ACPI device object to platform bus, and prevent its slaves from being enumerated before the controller driver being probed. Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-03-14 00:34:05 +08:00
/*
* ACPI support for int340x thermal drivers
*
* Copyright (C) 2014, Intel Corporation
* Authors: Zhang Rui <rui.zhang@intel.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/acpi.h>
#include <linux/module.h>
#include "internal.h"
ACPI/int340x_thermal: enumerate INT3401 for Intel SoC DTS thermal driver Intel SoC DTS thermal driver on Baytrail platform uses IRQ 86 for critical overheating notification. But this IRQ 86 is described in the _CRS control method of INT3401 device, thus we should enumerate INT3401 to set the IRQ descriptor when Intel SoC DTS thermal driver is built. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Tested-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2015-01-04 14:24:24 +08:00
#define INT3401_DEVICE 0X01
ACPI: introduce ACPI int340x thermal scan handler Newer laptops and tablets that use ACPI may have thermal sensors and other devices with thermal control capabilities outside the core CPU/SOC, for thermal safety reasons. They are exposed for the OS to use via 1) INT3400 ACPI device object as the master. 2) INT3401 ~ INT340B ACPI device objects as the slaves. This patch introduces a scan handler to enumerate the INT3400 ACPI device object to platform bus, and prevent its slaves from being enumerated before the controller driver being probed. Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-03-14 00:34:05 +08:00
static const struct acpi_device_id int340x_thermal_device_ids[] = {
ACPI/int340x_thermal: enumerate INT340X devices even if they're not in _ART/_TRT For some INT340X thermal devices, even if they are not referred in _TRT/_ART table, they still can be used by userspace for thermal control. Thus change the code to enumerated all the INT340X devices, no matter if they're referred in _TRT/_ART or not. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Tested-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2015-01-04 14:24:23 +08:00
{"INT3400"},
ACPI/int340x_thermal: enumerate INT3401 for Intel SoC DTS thermal driver Intel SoC DTS thermal driver on Baytrail platform uses IRQ 86 for critical overheating notification. But this IRQ 86 is described in the _CRS control method of INT3401 device, thus we should enumerate INT3401 to set the IRQ descriptor when Intel SoC DTS thermal driver is built. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Tested-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2015-01-04 14:24:24 +08:00
{"INT3401", INT3401_DEVICE},
ACPI: introduce ACPI int340x thermal scan handler Newer laptops and tablets that use ACPI may have thermal sensors and other devices with thermal control capabilities outside the core CPU/SOC, for thermal safety reasons. They are exposed for the OS to use via 1) INT3400 ACPI device object as the master. 2) INT3401 ~ INT340B ACPI device objects as the slaves. This patch introduces a scan handler to enumerate the INT3400 ACPI device object to platform bus, and prevent its slaves from being enumerated before the controller driver being probed. Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-03-14 00:34:05 +08:00
{"INT3402"},
{"INT3403"},
{"INT3404"},
{"INT3406"},
{"INT3407"},
{"INT3408"},
{"INT3409"},
{"INT340A"},
{"INT340B"},
{""},
};
static int int340x_thermal_handler_attach(struct acpi_device *adev,
const struct acpi_device_id *id)
{
Thermal: introduce int3400 thermal driver Introduce int3400 thermal driver. And make INT3400 driver enumerate the other int340x thermal components shown in _ART/_TRT. Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-03-14 12:45:05 +08:00
#if defined(CONFIG_INT340X_THERMAL) || defined(CONFIG_INT340X_THERMAL_MODULE)
ACPI/int340x_thermal: enumerate INT340X devices even if they're not in _ART/_TRT For some INT340X thermal devices, even if they are not referred in _TRT/_ART table, they still can be used by userspace for thermal control. Thus change the code to enumerated all the INT340X devices, no matter if they're referred in _TRT/_ART or not. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Tested-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2015-01-04 14:24:23 +08:00
acpi_create_platform_device(adev);
ACPI/int340x_thermal: enumerate INT3401 for Intel SoC DTS thermal driver Intel SoC DTS thermal driver on Baytrail platform uses IRQ 86 for critical overheating notification. But this IRQ 86 is described in the _CRS control method of INT3401 device, thus we should enumerate INT3401 to set the IRQ descriptor when Intel SoC DTS thermal driver is built. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Tested-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2015-01-04 14:24:24 +08:00
#elif defined(INTEL_SOC_DTS_THERMAL) || defined(INTEL_SOC_DTS_THERMAL_MODULE)
/* Intel SoC DTS thermal driver needs INT3401 to set IRQ descriptor */
if (id->driver_data == INT3401_DEVICE)
acpi_create_platform_device(adev);
ACPI: introduce ACPI int340x thermal scan handler Newer laptops and tablets that use ACPI may have thermal sensors and other devices with thermal control capabilities outside the core CPU/SOC, for thermal safety reasons. They are exposed for the OS to use via 1) INT3400 ACPI device object as the master. 2) INT3401 ~ INT340B ACPI device objects as the slaves. This patch introduces a scan handler to enumerate the INT3400 ACPI device object to platform bus, and prevent its slaves from being enumerated before the controller driver being probed. Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-03-14 00:34:05 +08:00
#endif
return 1;
}
static struct acpi_scan_handler int340x_thermal_handler = {
.ids = int340x_thermal_device_ids,
.attach = int340x_thermal_handler_attach,
};
void __init acpi_int340x_thermal_init(void)
{
acpi_scan_add_handler(&int340x_thermal_handler);
}