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   1 From 8f8cab9d3e90acf1db278ef44ad05f10aefb973f Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?N=C3=ADcolas=20F=2E=20R=2E=20A=2E=20Prado?=
   3  <nfraprado@collabora.com>
   4 Date: Thu, 6 Jul 2023 11:37:35 -0400
   5 Subject: [PATCH 28/42] thermal/drivers/mediatek/lvts_thermal: Disable
   6  undesired interrupts
   7 MIME-Version: 1.0
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  10
  11 Out of the many interrupts supported by the hardware, the only ones of
  12 interest to the driver currently are:
  13 * The temperature went over the high offset threshold, for any of the
  14   sensors
  15 * The temperature went below the low offset threshold, for any of the
  16   sensors
  17 * The temperature went over the stage3 threshold
  18
  19 These are the only thresholds configured by the driver through the
  20 OFFSETH, OFFSETL, and PROTTC registers, respectively.
  21
  22 The current interrupt mask in LVTS_MONINT_CONF, enables many more
  23 interrupts, including data ready on sensors for both filtered and
  24 immediate mode. These are not only not handled by the driver, but they
  25 are also triggered too often, causing unneeded overhead. Disable these
  26 unnecessary interrupts.
  27
  28 The meaning of each bit can be seen in the comment describing
  29 LVTS_MONINTST in the IRQ handler.
  30
  31 Fixes: f5f633b18234 ("thermal/drivers/mediatek: Add the Low Voltage Thermal Sensor driver")
  32 Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
  33 Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
  34 Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com>
  35 Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
  36 Link: https://lore.kernel.org/r/20230706153823.201943-5-nfraprado@collabora.com
  37 ---
  38  drivers/thermal/mediatek/lvts_thermal.c | 2 +-
  39  1 file changed, 1 insertion(+), 1 deletion(-)
  40
  41 --- a/drivers/thermal/mediatek/lvts_thermal.c
  42 +++ b/drivers/thermal/mediatek/lvts_thermal.c
  43 @@ -65,7 +65,7 @@
  44  #define LVTS_HW_FILTER                         0x2
  45  #define LVTS_TSSEL_CONF                                0x13121110
  46  #define LVTS_CALSCALE_CONF                     0x300
  47 -#define LVTS_MONINT_CONF                       0x9FBF7BDE
  48 +#define LVTS_MONINT_CONF                       0x8300318C
  49
  50  #define LVTS_INT_SENSOR0                       0x0009001F
  51  #define LVTS_INT_SENSOR1                       0x001203E0