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From:   Amit Kucheria <amit.kucheria@verdurent.com>
Date:   Mon, 29 Jun 2020 12:49:45 +0530
Message-ID: <CAHLCerMF3AusmmUUiE21mAV293fBU5vCxJ0K-dPcVNZBSHtMBg@mail.gmail.com>
Subject: Re: [PATCH v5 02/11] thermal: Store thermal mode in a dedicated enum
To:     Andrzej Pietrasiewicz <andrzej.p@collabora.com>
Cc:     Linux PM list <linux-pm@vger.kernel.org>,
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On Fri, Jun 26, 2020 at 11:08 PM Andrzej Pietrasiewicz
<andrzej.p@collabora.com> wrote:
>
> Prepare for storing mode in struct thermal_zone_device.
>
> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> Reviewed-by: Guenter Roeck <linux@roeck-us.net>
> [for acerhdf]
> Acked-by: Peter Kaestle <peter@piie.net>
> Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>

Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org>


> ---
>  drivers/acpi/thermal.c                        | 27 +++++++++----------
>  drivers/platform/x86/acerhdf.c                |  8 ++++--
>  .../intel/int340x_thermal/int3400_thermal.c   | 18 +++++--------
>  3 files changed, 25 insertions(+), 28 deletions(-)
>
> diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
> index 6de8066ca1e7..fb46070c66d8 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;
> @@ -915,7 +912,7 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
>                 goto remove_dev_link;
>         }
>
> -       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 4df7609b4aa9..9d1030b1a4f4 100644
> --- a/drivers/platform/x86/acerhdf.c
> +++ b/drivers/platform/x86/acerhdf.c
> @@ -68,6 +68,7 @@ static int kernelmode = 1;
>  #else
>  static int kernelmode;
>  #endif
> +static enum thermal_device_mode thermal_mode;
>
>  static unsigned int interval = 10;
>  static unsigned int fanon = 60000;
> @@ -397,6 +398,7 @@ static inline void acerhdf_revert_to_bios_mode(void)
>  {
>         acerhdf_change_fanstate(ACERHDF_FAN_AUTO);
>         kernelmode = 0;
> +       thermal_mode = THERMAL_DEVICE_DISABLED;
>         if (thz_dev)
>                 thz_dev->polling_delay = 0;
>         pr_notice("kernel mode fan control OFF\n");
> @@ -404,6 +406,7 @@ static inline void acerhdf_revert_to_bios_mode(void)
>  static inline void acerhdf_enable_kernelmode(void)
>  {
>         kernelmode = 1;
> +       thermal_mode = THERMAL_DEVICE_ENABLED;
>
>         thz_dev->polling_delay = interval*1000;
>         thermal_zone_device_update(thz_dev, THERMAL_EVENT_UNSPECIFIED);
> @@ -416,8 +419,7 @@ 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;
>  }
> @@ -739,6 +741,8 @@ static int __init acerhdf_register_thermal(void)
>         if (IS_ERR(cl_dev))
>                 return -EINVAL;
>
> +       thermal_mode = kernelmode ?
> +               THERMAL_DEVICE_ENABLED : THERMAL_DEVICE_DISABLED;
>         thz_dev = thermal_zone_device_register("acerhdf", 2, 0, NULL,
>                                               &acerhdf_dev_ops,
>                                               &acerhdf_zone_params, 0,
> diff --git a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
> index 0b3a62655843..e84faaadff87 100644
> --- a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
> +++ b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
> @@ -48,7 +48,7 @@ struct int3400_thermal_priv {
>         struct acpi_device *adev;
>         struct platform_device *pdev;
>         struct thermal_zone_device *thermal;
> -       int mode;
> +       enum thermal_device_mode mode;
>         int art_count;
>         struct art *arts;
>         int trt_count;
> @@ -395,24 +395,20 @@ 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);
>         }
>
>         evaluate_odvp(priv);
> --
> 2.17.1
>