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   1 From a1d874ef3376295ee8ed89b3b5315f4c840ff00b Mon Sep 17 00:00:00 2001
   2 From: Balsam CHIHI <bchihi@baylibre.com>
   3 Date: Tue, 17 Oct 2023 21:05:42 +0200
   4 Subject: [PATCH 40/42] thermal/drivers/mediatek/lvts_thermal: Add suspend and
   5  resume
   6 MIME-Version: 1.0
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   9
  10 Add suspend and resume support to LVTS driver.
  11
  12 Signed-off-by: Balsam CHIHI <bchihi@baylibre.com>
  13 [bero@baylibre.com: suspend/resume in noirq phase]
  14 Co-developed-by: Bernhard Rosenkränzer <bero@baylibre.com>
  15 Signed-off-by: Bernhard Rosenkränzer <bero@baylibre.com>
  16 Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
  17 Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com>
  18 Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
  19 Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
  20 Link: https://lore.kernel.org/r/20231017190545.157282-3-bero@baylibre.com
  21 ---
  22  drivers/thermal/mediatek/lvts_thermal.c | 37 +++++++++++++++++++++++++
  23  1 file changed, 37 insertions(+)
  24
  25 --- a/drivers/thermal/mediatek/lvts_thermal.c
  26 +++ b/drivers/thermal/mediatek/lvts_thermal.c
  27 @@ -1299,6 +1299,38 @@ static const struct lvts_ctrl_data mt798
  28         }
  29  };
  30
  31 +static int lvts_suspend(struct device *dev)
  32 +{
  33 +       struct lvts_domain *lvts_td;
  34 +       int i;
  35 +
  36 +       lvts_td = dev_get_drvdata(dev);
  37 +
  38 +       for (i = 0; i < lvts_td->num_lvts_ctrl; i++)
  39 +               lvts_ctrl_set_enable(&lvts_td->lvts_ctrl[i], false);
  40 +
  41 +       clk_disable_unprepare(lvts_td->clk);
  42 +
  43 +       return 0;
  44 +}
  45 +
  46 +static int lvts_resume(struct device *dev)
  47 +{
  48 +       struct lvts_domain *lvts_td;
  49 +       int i, ret;
  50 +
  51 +       lvts_td = dev_get_drvdata(dev);
  52 +
  53 +       ret = clk_prepare_enable(lvts_td->clk);
  54 +       if (ret)
  55 +               return ret;
  56 +
  57 +       for (i = 0; i < lvts_td->num_lvts_ctrl; i++)
  58 +               lvts_ctrl_set_enable(&lvts_td->lvts_ctrl[i], true);
  59 +
  60 +       return 0;
  61 +}
  62 +
  63  static const struct lvts_ctrl_data mt8195_lvts_mcu_data_ctrl[] = {
  64         {
  65                 .cal_offset = { 0x04, 0x07 },
  66 @@ -1407,12 +1439,17 @@ static const struct of_device_id lvts_of
  67  };
  68  MODULE_DEVICE_TABLE(of, lvts_of_match);
  69
  70 +static const struct dev_pm_ops lvts_pm_ops = {
  71 +       NOIRQ_SYSTEM_SLEEP_PM_OPS(lvts_suspend, lvts_resume)
  72 +};
  73 +
  74  static struct platform_driver lvts_driver = {
  75         .probe = lvts_probe,
  76         .remove_new = lvts_remove,
  77         .driver = {
  78                 .name = "mtk-lvts-thermal",
  79                 .of_match_table = lvts_of_match,
  80 +               .pm = &lvts_pm_ops,
  81         },
  82  };
  83  module_platform_driver(lvts_driver);