mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 23:42:43 +00:00
c36de2e73a
Backport almost 50 commits from upstream Linux to improve thermal drivers for MediaTek SoCs and add new LVTS driver for MT7988. Signed-off-by: Daniel Golle <daniel@makrotopia.org>
199 lines
6.7 KiB
Diff
199 lines
6.7 KiB
Diff
From 26cc18a3d6d9eac21c4f4b4bb96147b2c6617c86 Mon Sep 17 00:00:00 2001
|
|
From: Frank Wunderlich <frank-w@public-files.de>
|
|
Date: Fri, 22 Sep 2023 07:50:19 +0200
|
|
Subject: [PATCH 36/42] thermal/drivers/mediatek/lvts_thermal: Make coeff
|
|
configurable
|
|
|
|
The upcoming mt7988 has different temperature coefficients so we
|
|
cannot use constants in the functions lvts_golden_temp_init,
|
|
lvts_golden_temp_init and lvts_raw_to_temp anymore.
|
|
|
|
Add a field in the lvts_ctrl pointing to the lvts_data which now
|
|
contains the soc-specific temperature coefficents.
|
|
|
|
To make the code better readable, rename static int coeff_b to
|
|
golden_temp_offset, COEFF_A to temp_factor and COEFF_B to temp_offset.
|
|
|
|
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
|
|
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
|
|
Tested-by: Daniel Golle <daniel@makrotopia.org>
|
|
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
|
|
Link: https://lore.kernel.org/r/20230922055020.6436-4-linux@fw-web.de
|
|
---
|
|
drivers/thermal/mediatek/lvts_thermal.c | 51 ++++++++++++++++---------
|
|
1 file changed, 34 insertions(+), 17 deletions(-)
|
|
|
|
--- a/drivers/thermal/mediatek/lvts_thermal.c
|
|
+++ b/drivers/thermal/mediatek/lvts_thermal.c
|
|
@@ -80,8 +80,8 @@
|
|
#define LVTS_SENSOR_MAX 4
|
|
#define LVTS_GOLDEN_TEMP_MAX 62
|
|
#define LVTS_GOLDEN_TEMP_DEFAULT 50
|
|
-#define LVTS_COEFF_A -250460
|
|
-#define LVTS_COEFF_B 250460
|
|
+#define LVTS_COEFF_A_MT8195 -250460
|
|
+#define LVTS_COEFF_B_MT8195 250460
|
|
|
|
#define LVTS_MSR_IMMEDIATE_MODE 0
|
|
#define LVTS_MSR_FILTERED_MODE 1
|
|
@@ -94,7 +94,7 @@
|
|
#define LVTS_MINIMUM_THRESHOLD 20000
|
|
|
|
static int golden_temp = LVTS_GOLDEN_TEMP_DEFAULT;
|
|
-static int coeff_b = LVTS_COEFF_B;
|
|
+static int golden_temp_offset;
|
|
|
|
struct lvts_sensor_data {
|
|
int dt_id;
|
|
@@ -112,6 +112,8 @@ struct lvts_ctrl_data {
|
|
struct lvts_data {
|
|
const struct lvts_ctrl_data *lvts_ctrl;
|
|
int num_lvts_ctrl;
|
|
+ int temp_factor;
|
|
+ int temp_offset;
|
|
};
|
|
|
|
struct lvts_sensor {
|
|
@@ -126,6 +128,7 @@ struct lvts_sensor {
|
|
|
|
struct lvts_ctrl {
|
|
struct lvts_sensor sensors[LVTS_SENSOR_MAX];
|
|
+ const struct lvts_data *lvts_data;
|
|
u32 calibration[LVTS_SENSOR_MAX];
|
|
u32 hw_tshut_raw_temp;
|
|
int num_lvts_sensor;
|
|
@@ -247,21 +250,21 @@ static void lvts_debugfs_exit(struct lvt
|
|
|
|
#endif
|
|
|
|
-static int lvts_raw_to_temp(u32 raw_temp)
|
|
+static int lvts_raw_to_temp(u32 raw_temp, int temp_factor)
|
|
{
|
|
int temperature;
|
|
|
|
- temperature = ((s64)(raw_temp & 0xFFFF) * LVTS_COEFF_A) >> 14;
|
|
- temperature += coeff_b;
|
|
+ temperature = ((s64)(raw_temp & 0xFFFF) * temp_factor) >> 14;
|
|
+ temperature += golden_temp_offset;
|
|
|
|
return temperature;
|
|
}
|
|
|
|
-static u32 lvts_temp_to_raw(int temperature)
|
|
+static u32 lvts_temp_to_raw(int temperature, int temp_factor)
|
|
{
|
|
- u32 raw_temp = ((s64)(coeff_b - temperature)) << 14;
|
|
+ u32 raw_temp = ((s64)(golden_temp_offset - temperature)) << 14;
|
|
|
|
- raw_temp = div_s64(raw_temp, -LVTS_COEFF_A);
|
|
+ raw_temp = div_s64(raw_temp, -temp_factor);
|
|
|
|
return raw_temp;
|
|
}
|
|
@@ -269,6 +272,9 @@ static u32 lvts_temp_to_raw(int temperat
|
|
static int lvts_get_temp(struct thermal_zone_device *tz, int *temp)
|
|
{
|
|
struct lvts_sensor *lvts_sensor = thermal_zone_device_priv(tz);
|
|
+ struct lvts_ctrl *lvts_ctrl = container_of(lvts_sensor, struct lvts_ctrl,
|
|
+ sensors[lvts_sensor->id]);
|
|
+ const struct lvts_data *lvts_data = lvts_ctrl->lvts_data;
|
|
void __iomem *msr = lvts_sensor->msr;
|
|
u32 value;
|
|
int rc;
|
|
@@ -301,7 +307,7 @@ static int lvts_get_temp(struct thermal_
|
|
if (rc)
|
|
return -EAGAIN;
|
|
|
|
- *temp = lvts_raw_to_temp(value & 0xFFFF);
|
|
+ *temp = lvts_raw_to_temp(value & 0xFFFF, lvts_data->temp_factor);
|
|
|
|
return 0;
|
|
}
|
|
@@ -348,10 +354,13 @@ static bool lvts_should_update_thresh(st
|
|
static int lvts_set_trips(struct thermal_zone_device *tz, int low, int high)
|
|
{
|
|
struct lvts_sensor *lvts_sensor = thermal_zone_device_priv(tz);
|
|
- struct lvts_ctrl *lvts_ctrl = container_of(lvts_sensor, struct lvts_ctrl, sensors[lvts_sensor->id]);
|
|
+ struct lvts_ctrl *lvts_ctrl = container_of(lvts_sensor, struct lvts_ctrl,
|
|
+ sensors[lvts_sensor->id]);
|
|
+ const struct lvts_data *lvts_data = lvts_ctrl->lvts_data;
|
|
void __iomem *base = lvts_sensor->base;
|
|
- u32 raw_low = lvts_temp_to_raw(low != -INT_MAX ? low : LVTS_MINIMUM_THRESHOLD);
|
|
- u32 raw_high = lvts_temp_to_raw(high);
|
|
+ u32 raw_low = lvts_temp_to_raw(low != -INT_MAX ? low : LVTS_MINIMUM_THRESHOLD,
|
|
+ lvts_data->temp_factor);
|
|
+ u32 raw_high = lvts_temp_to_raw(high, lvts_data->temp_factor);
|
|
bool should_update_thresh;
|
|
|
|
lvts_sensor->low_thresh = low;
|
|
@@ -692,7 +701,7 @@ static int lvts_calibration_read(struct
|
|
return 0;
|
|
}
|
|
|
|
-static int lvts_golden_temp_init(struct device *dev, u32 *value)
|
|
+static int lvts_golden_temp_init(struct device *dev, u32 *value, int temp_offset)
|
|
{
|
|
u32 gt;
|
|
|
|
@@ -701,7 +710,7 @@ static int lvts_golden_temp_init(struct
|
|
if (gt && gt < LVTS_GOLDEN_TEMP_MAX)
|
|
golden_temp = gt;
|
|
|
|
- coeff_b = golden_temp * 500 + LVTS_COEFF_B;
|
|
+ golden_temp_offset = golden_temp * 500 + temp_offset;
|
|
|
|
return 0;
|
|
}
|
|
@@ -724,7 +733,7 @@ static int lvts_ctrl_init(struct device
|
|
* The golden temp information is contained in the first chunk
|
|
* of efuse data.
|
|
*/
|
|
- ret = lvts_golden_temp_init(dev, (u32 *)lvts_td->calib);
|
|
+ ret = lvts_golden_temp_init(dev, (u32 *)lvts_td->calib, lvts_data->temp_offset);
|
|
if (ret)
|
|
return ret;
|
|
|
|
@@ -735,6 +744,7 @@ static int lvts_ctrl_init(struct device
|
|
for (i = 0; i < lvts_data->num_lvts_ctrl; i++) {
|
|
|
|
lvts_ctrl[i].base = lvts_td->base + lvts_data->lvts_ctrl[i].offset;
|
|
+ lvts_ctrl[i].lvts_data = lvts_data;
|
|
|
|
ret = lvts_sensor_init(dev, &lvts_ctrl[i],
|
|
&lvts_data->lvts_ctrl[i]);
|
|
@@ -758,7 +768,8 @@ static int lvts_ctrl_init(struct device
|
|
* after initializing the calibration.
|
|
*/
|
|
lvts_ctrl[i].hw_tshut_raw_temp =
|
|
- lvts_temp_to_raw(lvts_data->lvts_ctrl[i].hw_tshut_temp);
|
|
+ lvts_temp_to_raw(lvts_data->lvts_ctrl[i].hw_tshut_temp,
|
|
+ lvts_data->temp_factor);
|
|
|
|
lvts_ctrl[i].low_thresh = INT_MIN;
|
|
lvts_ctrl[i].high_thresh = INT_MIN;
|
|
@@ -1223,6 +1234,8 @@ static int lvts_probe(struct platform_de
|
|
if (irq < 0)
|
|
return irq;
|
|
|
|
+ golden_temp_offset = lvts_data->temp_offset;
|
|
+
|
|
ret = lvts_domain_init(dev, lvts_td, lvts_data);
|
|
if (ret)
|
|
return dev_err_probe(dev, ret, "Failed to initialize the lvts domain\n");
|
|
@@ -1336,11 +1349,15 @@ static const struct lvts_ctrl_data mt819
|
|
static const struct lvts_data mt8195_lvts_mcu_data = {
|
|
.lvts_ctrl = mt8195_lvts_mcu_data_ctrl,
|
|
.num_lvts_ctrl = ARRAY_SIZE(mt8195_lvts_mcu_data_ctrl),
|
|
+ .temp_factor = LVTS_COEFF_A_MT8195,
|
|
+ .temp_offset = LVTS_COEFF_B_MT8195,
|
|
};
|
|
|
|
static const struct lvts_data mt8195_lvts_ap_data = {
|
|
.lvts_ctrl = mt8195_lvts_ap_data_ctrl,
|
|
.num_lvts_ctrl = ARRAY_SIZE(mt8195_lvts_ap_data_ctrl),
|
|
+ .temp_factor = LVTS_COEFF_A_MT8195,
|
|
+ .temp_offset = LVTS_COEFF_B_MT8195,
|
|
};
|
|
|
|
static const struct of_device_id lvts_of_match[] = {
|