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Date: Wed, 15 Apr 2020 12:09:43 +0200
From: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
To: Andrzej Pietrasiewicz <andrzej.p@...labora.com>
Cc: linux-pm@...r.kernel.org, Zhang Rui <rui.zhang@...el.com>,
"Rafael J . Wysocki" <rjw@...ysocki.net>,
Len Brown <lenb@...nel.org>, Jiri Pirko <jiri@...lanox.com>,
Ido Schimmel <idosch@...lanox.com>,
"David S . Miller" <davem@...emloft.net>,
Peter Kaestle <peter@...e.net>,
Darren Hart <dvhart@...radead.org>,
Andy Shevchenko <andy@...radead.org>,
Support Opensource <support.opensource@...semi.com>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
Amit Kucheria <amit.kucheria@...durent.com>,
Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
Pengutronix Kernel Team <kernel@...gutronix.de>,
Fabio Estevam <festevam@...il.com>,
NXP Linux Team <linux-imx@....com>,
Allison Randal <allison@...utok.net>,
Enrico Weigelt <info@...ux.net>,
Gayatri Kammela <gayatri.kammela@...el.com>,
Thomas Gleixner <tglx@...utronix.de>,
linux-acpi@...r.kernel.org, netdev@...r.kernel.org,
platform-driver-x86@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, kernel@...labora.com
Subject: Re: [RFC 3/8] thermal: Store thermal mode in a dedicated enum
On 4/7/20 7:49 PM, Andrzej Pietrasiewicz wrote:
> Prepare for adding THERMAL_DEVICE_INITIAL mode.
>
> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@...labora.com>
> ---
> drivers/acpi/thermal.c | 27 +++++++++----------
> drivers/platform/x86/acerhdf.c | 12 ++++++---
> .../intel/int340x_thermal/int3400_thermal.c | 18 +++++--------
> 3 files changed, 27 insertions(+), 30 deletions(-)
>
> diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
> index 19067a5e5293..a93b0412dd6b 100644
> --- a/drivers/acpi/thermal.c
> +++ b/drivers/acpi/thermal.c
> @@ -172,7 +172,7 @@ struct acpi_thermal {
> struct acpi_thermal_trips trips;
> struct acpi_handle_list devices;
> struct thermal_zone_device *thermal_zone;
> - int tz_enabled;
> + enum thermal_device_mode mode;
> int kelvin_offset; /* in millidegrees */
> struct work_struct thermal_check_work;
> };
> @@ -500,7 +500,7 @@ static void acpi_thermal_check(void *data)
> {
> struct acpi_thermal *tz = data;
>
> - if (!tz->tz_enabled)
> + if (tz->mode != THERMAL_DEVICE_ENABLED)
> return;
>
> thermal_zone_device_update(tz->thermal_zone,
> @@ -534,8 +534,7 @@ static int thermal_get_mode(struct thermal_zone_device *thermal,
> if (!tz)
> return -EINVAL;
>
> - *mode = tz->tz_enabled ? THERMAL_DEVICE_ENABLED :
> - THERMAL_DEVICE_DISABLED;
> + *mode = tz->mode;
>
> return 0;
> }
> @@ -544,27 +543,25 @@ static int thermal_set_mode(struct thermal_zone_device *thermal,
> enum thermal_device_mode mode)
> {
> struct acpi_thermal *tz = thermal->devdata;
> - int enable;
>
> if (!tz)
> return -EINVAL;
>
> + if (mode != THERMAL_DEVICE_DISABLED &&
> + mode != THERMAL_DEVICE_ENABLED)
> + return -EINVAL;
> /*
> * enable/disable thermal management from ACPI thermal driver
> */
> - if (mode == THERMAL_DEVICE_ENABLED)
> - enable = 1;
> - else if (mode == THERMAL_DEVICE_DISABLED) {
> - enable = 0;
> + if (mode == THERMAL_DEVICE_DISABLED)
> pr_warn("thermal zone will be disabled\n");
> - } else
> - return -EINVAL;
>
> - if (enable != tz->tz_enabled) {
> - tz->tz_enabled = enable;
> + if (mode != tz->mode) {
> + tz->mode = mode;
> ACPI_DEBUG_PRINT((ACPI_DB_INFO,
> "%s kernel ACPI thermal control\n",
> - tz->tz_enabled ? "Enable" : "Disable"));
> + tz->mode == THERMAL_DEVICE_ENABLED ?
> + "Enable" : "Disable"));
> acpi_thermal_check(tz);
> }
> return 0;
> @@ -913,7 +910,7 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
> if (ACPI_FAILURE(status))
> return -ENODEV;
>
> - tz->tz_enabled = 1;
> + tz->mode = THERMAL_DEVICE_ENABLED;
>
> dev_info(&tz->device->dev, "registered as thermal_zone%d\n",
> tz->thermal_zone->id);
> diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c
> index d5188c1d688b..87e357017d4a 100644
> --- a/drivers/platform/x86/acerhdf.c
> +++ b/drivers/platform/x86/acerhdf.c
> @@ -65,8 +65,10 @@
>
> #ifdef START_IN_KERNEL_MODE
> static int kernelmode = 1;
> +static enum thermal_device_mode thermal_mode = THERMAL_DEVICE_ENABLED;
> #else
> static int kernelmode;
> +static enum thermal_device_mode thermal_mode = THERMAL_DEVICE_DISABLED;
> #endif
>
> static unsigned int interval = 10;
> @@ -416,8 +418,7 @@ static int acerhdf_get_mode(struct thermal_zone_device *thermal,
> if (verbose)
> pr_notice("kernel mode fan control %d\n", kernelmode);
>
> - *mode = (kernelmode) ? THERMAL_DEVICE_ENABLED
> - : THERMAL_DEVICE_DISABLED;
> + *mode = thermal_mode;
>
> return 0;
> }
> @@ -435,10 +436,13 @@ static int acerhdf_set_mode(struct thermal_zone_device *thermal,
> mode != THERMAL_DEVICE_ENABLED)
> return -EINVAL;
>
> - if (mode == THERMAL_DEVICE_DISABLED && kernelmode)
> + if (mode == THERMAL_DEVICE_DISABLED && kernelmode) {
> acerhdf_revert_to_bios_mode();
> - else if (mode == THERMAL_DEVICE_ENABLED && !kernelmode)
> + thermal_mode = THERMAL_DEVICE_DISABLED;
> + } else if (mode == THERMAL_DEVICE_ENABLED && !kernelmode) {
> acerhdf_enable_kernelmode();
> + thermal_mode = THERMAL_DEVICE_ENABLED;
> + }
>
> return 0;
> }
The conversion missed:
* handling of "force_bios" and force_product" kernel parameters:
if (force_bios[0]) {
version = force_bios;
pr_info("forcing BIOS version: %s\n", version);
kernelmode = 0;
}
if (force_product[0]) {
product = force_product;
pr_info("forcing BIOS product: %s\n", product);
kernelmode = 0;
}
* acerhdf_revert_to_bios_mode() call on error in acerhdf_set_cur_state()
Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics
> diff --git a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
> index 634b943e9e3d..fcbd1b14fa74 100644
> --- a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
> +++ b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
> @@ -44,7 +44,7 @@ static char *int3400_thermal_uuids[INT3400_THERMAL_MAXIMUM_UUID] = {
> struct int3400_thermal_priv {
> struct acpi_device *adev;
> struct thermal_zone_device *thermal;
> - int mode;
> + enum thermal_device_mode mode;
> int art_count;
> struct art *arts;
> int trt_count;
> @@ -247,24 +247,20 @@ static int int3400_thermal_set_mode(struct thermal_zone_device *thermal,
> enum thermal_device_mode mode)
> {
> struct int3400_thermal_priv *priv = thermal->devdata;
> - bool enable;
> int result = 0;
>
> if (!priv)
> return -EINVAL;
>
> - if (mode == THERMAL_DEVICE_ENABLED)
> - enable = true;
> - else if (mode == THERMAL_DEVICE_DISABLED)
> - enable = false;
> - else
> + if (mode != THERMAL_DEVICE_ENABLED &&
> + mode != THERMAL_DEVICE_DISABLED)
> return -EINVAL;
>
> - if (enable != priv->mode) {
> - priv->mode = enable;
> + if (mode != priv->mode) {
> + priv->mode = mode;
> result = int3400_thermal_run_osc(priv->adev->handle,
> - priv->current_uuid_index,
> - enable);
> + priv->current_uuid_index,
> + mode == THERMAL_DEVICE_ENABLED);
> }
> return result;
> }
>
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