Re: [PATCH v9 2/5] thermal: mediatek: control buffer enablement tweaks

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On 27/01/2023 23:21, Amjad Ouled-Ameur wrote:

On 1/27/23 22:48, Daniel Lezcano wrote:
On 27/01/2023 16:44, Amjad Ouled-Ameur wrote:
From: Markus Schneider-Pargmann <msp@xxxxxxxxxxxx>

Add logic in order to be able to turn on the control buffer on MT8365.
This change now allows to have control buffer support for MTK_THERMAL_V1,
and it allows to define the register offset, and mask used to enable it.

Signed-off-by: Markus Schneider-Pargmann <msp@xxxxxxxxxxxx>
Signed-off-by: Fabien Parent <fparent@xxxxxxxxxxxx>
Signed-off-by: Amjad Ouled-Ameur <aouledameur@xxxxxxxxxxxx>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
---
  drivers/thermal/mtk_thermal.c | 25 ++++++++++++++++++-------
  1 file changed, 18 insertions(+), 7 deletions(-)

diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c
index 8440692e3890..d8ddceb75372 100644
--- a/drivers/thermal/mtk_thermal.c
+++ b/drivers/thermal/mtk_thermal.c
@@ -271,6 +271,9 @@ struct mtk_thermal_data {
      bool need_switch_bank;
      struct thermal_bank_cfg bank_data[MAX_NUM_ZONES];
      enum mtk_thermal_version version;
+    u32 apmixed_buffer_ctl_reg;
+    u32 apmixed_buffer_ctl_mask;
+    u32 apmixed_buffer_ctl_set;
  };
    struct mtk_thermal {
@@ -514,6 +517,9 @@ static const struct mtk_thermal_data mt7622_thermal_data = {
      .adcpnp = mt7622_adcpnp,
      .sensor_mux_values = mt7622_mux_values,
      .version = MTK_THERMAL_V2,
+    .apmixed_buffer_ctl_reg = APMIXED_SYS_TS_CON1,
+    .apmixed_buffer_ctl_mask = GENMASK(31, 6) | BIT(3),
+    .apmixed_buffer_ctl_set = BIT(0),
  };
    /*
@@ -963,14 +969,18 @@ static const struct of_device_id mtk_thermal_of_match[] = {
  };
  MODULE_DEVICE_TABLE(of, mtk_thermal_of_match);
  -static void mtk_thermal_turn_on_buffer(void __iomem *apmixed_base)
+static void mtk_thermal_turn_on_buffer(struct mtk_thermal *mt,
+                       void __iomem *apmixed_base)
  {
-    int tmp;
+    u32 tmp;
+
+    if (!mt->conf->apmixed_buffer_ctl_reg)
+        return;
  -    tmp = readl(apmixed_base + APMIXED_SYS_TS_CON1);
-    tmp &= ~(0x37);
-    tmp |= 0x1;
-    writel(tmp, apmixed_base + APMIXED_SYS_TS_CON1);
+    tmp = readl(apmixed_base + mt->conf->apmixed_buffer_ctl_reg);
+    tmp &= mt->conf->apmixed_buffer_ctl_mask;
+    tmp |= mt->conf->apmixed_buffer_ctl_set;
+    writel(tmp, apmixed_base + mt->conf->apmixed_buffer_ctl_reg);
      udelay(200);
  }
  @@ -1070,8 +1080,9 @@ static int mtk_thermal_probe(struct platform_device *pdev)
          goto err_disable_clk_auxadc;
      }
  +    mtk_thermal_turn_on_buffer(mt, apmixed_base);
+
      if (mt->conf->version == MTK_THERMAL_V2) {
-        mtk_thermal_turn_on_buffer(apmixed_base);
          mtk_thermal_release_periodic_ts(mt, auxadc_base);
      }

This change conflicts with commit 4f2ee0aa2e706

I fixed it with:

-       if (mt->conf->version != MTK_THERMAL_V1) {
-               mtk_thermal_turn_on_buffer(apmixed_base);
+       mtk_thermal_turn_on_buffer(apmixed_base);
+
+       if (mt->conf->version != MTK_THERMAL_V1)
                mtk_thermal_release_periodic_ts(mt, auxadc_base);
-       }

I think it's rather MTK_THERMAL_V2 and not MTK_THERMAL_V1. Other than that, it looks

It was before if (version == MTK_THERMAL_V2). Now there is a V3, so it is replaced by if (version != MTK_THERMAL_V1) in order to include the V3


Let me know if there is something wrong.



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