From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/drivers/thermal/rcar_gen3_thermal.c | 150 ++++++++++++++++++++++++++++++++++---------------
1 files changed, 103 insertions(+), 47 deletions(-)
diff --git a/kernel/drivers/thermal/rcar_gen3_thermal.c b/kernel/drivers/thermal/rcar_gen3_thermal.c
index 8f55345..c4f2875 100644
--- a/kernel/drivers/thermal/rcar_gen3_thermal.c
+++ b/kernel/drivers/thermal/rcar_gen3_thermal.c
@@ -18,6 +18,7 @@
#include <linux/thermal.h>
#include "thermal_core.h"
+#include "thermal_hwmon.h"
/* Register offsets */
#define REG_GEN3_IRQSTR 0x04
@@ -61,6 +62,13 @@
#define TSC_MAX_NUM 3
+/* default THCODE values if FUSEs are missing */
+static const int thcodes[TSC_MAX_NUM][3] = {
+ { 3397, 2800, 2221 },
+ { 3393, 2795, 2216 },
+ { 3389, 2805, 2237 },
+};
+
/* Structure for thermal temperature calculation */
struct equation_coefs {
int a1;
@@ -73,8 +81,8 @@
void __iomem *base;
struct thermal_zone_device *zone;
struct equation_coefs coef;
- int low;
- int high;
+ int tj_t;
+ int id; /* thermal channel id */
};
struct rcar_gen3_thermal_priv {
@@ -121,30 +129,28 @@
#define RCAR3_THERMAL_GRAN 500 /* mili Celsius */
/* no idea where these constants come from */
-#define TJ_1 116
#define TJ_3 -41
-static void rcar_gen3_thermal_calc_coefs(struct equation_coefs *coef,
- int *ptat, int *thcode)
+static void rcar_gen3_thermal_calc_coefs(struct rcar_gen3_thermal_tsc *tsc,
+ int *ptat, const int *thcode,
+ int ths_tj_1)
{
- int tj_2;
-
/* TODO: Find documentation and document constant calculation formula */
/*
* Division is not scaled in BSP and if scaled it might overflow
* the dividend (4095 * 4095 << 14 > INT_MAX) so keep it unscaled
*/
- tj_2 = (FIXPT_INT((ptat[1] - ptat[2]) * 157)
- / (ptat[0] - ptat[2])) - FIXPT_INT(41);
+ tsc->tj_t = (FIXPT_INT((ptat[1] - ptat[2]) * (ths_tj_1 - TJ_3))
+ / (ptat[0] - ptat[2])) + FIXPT_INT(TJ_3);
- coef->a1 = FIXPT_DIV(FIXPT_INT(thcode[1] - thcode[2]),
- tj_2 - FIXPT_INT(TJ_3));
- coef->b1 = FIXPT_INT(thcode[2]) - coef->a1 * TJ_3;
+ tsc->coef.a1 = FIXPT_DIV(FIXPT_INT(thcode[1] - thcode[2]),
+ tsc->tj_t - FIXPT_INT(TJ_3));
+ tsc->coef.b1 = FIXPT_INT(thcode[2]) - tsc->coef.a1 * TJ_3;
- coef->a2 = FIXPT_DIV(FIXPT_INT(thcode[1] - thcode[0]),
- tj_2 - FIXPT_INT(TJ_1));
- coef->b2 = FIXPT_INT(thcode[0]) - coef->a2 * TJ_1;
+ tsc->coef.a2 = FIXPT_DIV(FIXPT_INT(thcode[1] - thcode[0]),
+ tsc->tj_t - FIXPT_INT(ths_tj_1));
+ tsc->coef.b2 = FIXPT_INT(thcode[0]) - tsc->coef.a2 * ths_tj_1;
}
static int rcar_gen3_thermal_round(int temp)
@@ -160,19 +166,21 @@
static int rcar_gen3_thermal_get_temp(void *devdata, int *temp)
{
struct rcar_gen3_thermal_tsc *tsc = devdata;
- int mcelsius, val1, val2;
- u32 reg;
+ int mcelsius, val;
+ int reg;
/* Read register and convert to mili Celsius */
reg = rcar_gen3_thermal_read(tsc, REG_GEN3_TEMP) & CTEMP_MASK;
- val1 = FIXPT_DIV(FIXPT_INT(reg) - tsc->coef.b1, tsc->coef.a1);
- val2 = FIXPT_DIV(FIXPT_INT(reg) - tsc->coef.b2, tsc->coef.a2);
- mcelsius = FIXPT_TO_MCELSIUS((val1 + val2) / 2);
+ if (reg <= thcodes[tsc->id][1])
+ val = FIXPT_DIV(FIXPT_INT(reg) - tsc->coef.b1,
+ tsc->coef.a1);
+ else
+ val = FIXPT_DIV(FIXPT_INT(reg) - tsc->coef.b2,
+ tsc->coef.a2);
+ mcelsius = FIXPT_TO_MCELSIUS(val);
- /* Make sure we are inside specifications */
- if ((mcelsius < MCELSIUS(-40)) || (mcelsius > MCELSIUS(125)))
- return -EIO;
+ /* Guaranteed operating range is -40C to 125C. */
/* Round value to device granularity setting */
*temp = rcar_gen3_thermal_round(mcelsius);
@@ -183,21 +191,25 @@
static int rcar_gen3_thermal_mcelsius_to_temp(struct rcar_gen3_thermal_tsc *tsc,
int mcelsius)
{
- int celsius, val1, val2;
+ int celsius, val;
celsius = DIV_ROUND_CLOSEST(mcelsius, 1000);
- val1 = celsius * tsc->coef.a1 + tsc->coef.b1;
- val2 = celsius * tsc->coef.a2 + tsc->coef.b2;
+ if (celsius <= INT_FIXPT(tsc->tj_t))
+ val = celsius * tsc->coef.a1 + tsc->coef.b1;
+ else
+ val = celsius * tsc->coef.a2 + tsc->coef.b2;
- return INT_FIXPT((val1 + val2) / 2);
+ return INT_FIXPT(val);
}
-static int rcar_gen3_thermal_set_trips(void *devdata, int low, int high)
+static int rcar_gen3_thermal_update_range(struct rcar_gen3_thermal_tsc *tsc)
{
- struct rcar_gen3_thermal_tsc *tsc = devdata;
+ int temperature, low, high;
- low = clamp_val(low, -40000, 120000);
- high = clamp_val(high, -40000, 120000);
+ rcar_gen3_thermal_get_temp(tsc, &temperature);
+
+ low = temperature - MCELSIUS(1);
+ high = temperature + MCELSIUS(1);
rcar_gen3_thermal_write(tsc, REG_GEN3_IRQTEMP1,
rcar_gen3_thermal_mcelsius_to_temp(tsc, low));
@@ -205,15 +217,11 @@
rcar_gen3_thermal_write(tsc, REG_GEN3_IRQTEMP2,
rcar_gen3_thermal_mcelsius_to_temp(tsc, high));
- tsc->low = low;
- tsc->high = high;
-
return 0;
}
static const struct thermal_zone_of_device_ops rcar_gen3_tz_of_ops = {
.get_temp = rcar_gen3_thermal_get_temp,
- .set_trips = rcar_gen3_thermal_set_trips,
};
static void rcar_thermal_irq_set(struct rcar_gen3_thermal_priv *priv, bool on)
@@ -234,9 +242,11 @@
for (i = 0; i < priv->num_tscs; i++) {
status = rcar_gen3_thermal_read(priv->tscs[i], REG_GEN3_IRQSTR);
rcar_gen3_thermal_write(priv->tscs[i], REG_GEN3_IRQSTR, 0);
- if (status)
+ if (status) {
+ rcar_gen3_thermal_update_range(priv->tscs[i]);
thermal_zone_device_update(priv->tscs[i]->zone,
THERMAL_EVENT_UNSPECIFIED);
+ }
}
return IRQ_HANDLED;
@@ -282,7 +292,7 @@
usleep_range(1000, 2000);
- rcar_gen3_thermal_write(tsc, REG_GEN3_IRQCTL, 0x3F);
+ rcar_gen3_thermal_write(tsc, REG_GEN3_IRQCTL, 0);
rcar_gen3_thermal_write(tsc, REG_GEN3_IRQMSK, 0);
rcar_gen3_thermal_write(tsc, REG_GEN3_IRQEN, IRQ_TEMPD1 | IRQ_TEMP2);
@@ -293,10 +303,41 @@
usleep_range(1000, 2000);
}
+static const int rcar_gen3_ths_tj_1 = 126;
+static const int rcar_gen3_ths_tj_1_m3_w = 116;
static const struct of_device_id rcar_gen3_thermal_dt_ids[] = {
- { .compatible = "renesas,r8a7795-thermal", },
- { .compatible = "renesas,r8a7796-thermal", },
- { .compatible = "renesas,r8a77965-thermal", },
+ {
+ .compatible = "renesas,r8a774a1-thermal",
+ .data = &rcar_gen3_ths_tj_1_m3_w,
+ },
+ {
+ .compatible = "renesas,r8a774b1-thermal",
+ .data = &rcar_gen3_ths_tj_1,
+ },
+ {
+ .compatible = "renesas,r8a774e1-thermal",
+ .data = &rcar_gen3_ths_tj_1,
+ },
+ {
+ .compatible = "renesas,r8a7795-thermal",
+ .data = &rcar_gen3_ths_tj_1,
+ },
+ {
+ .compatible = "renesas,r8a7796-thermal",
+ .data = &rcar_gen3_ths_tj_1_m3_w,
+ },
+ {
+ .compatible = "renesas,r8a77961-thermal",
+ .data = &rcar_gen3_ths_tj_1_m3_w,
+ },
+ {
+ .compatible = "renesas,r8a77965-thermal",
+ .data = &rcar_gen3_ths_tj_1,
+ },
+ {
+ .compatible = "renesas,r8a77980-thermal",
+ .data = &rcar_gen3_ths_tj_1,
+ },
{},
};
MODULE_DEVICE_TABLE(of, rcar_gen3_thermal_dt_ids);
@@ -314,10 +355,18 @@
return 0;
}
+static void rcar_gen3_hwmon_action(void *data)
+{
+ struct thermal_zone_device *zone = data;
+
+ thermal_remove_hwmon_sysfs(zone);
+}
+
static int rcar_gen3_thermal_probe(struct platform_device *pdev)
{
struct rcar_gen3_thermal_priv *priv;
struct device *dev = &pdev->dev;
+ const int *ths_tj_1 = of_device_get_match_data(dev);
struct resource *res;
struct thermal_zone_device *zone;
int ret, irq, i;
@@ -326,11 +375,6 @@
/* default values if FUSEs are missing */
/* TODO: Read values from hardware on supported platforms */
int ptat[3] = { 2631, 1509, 435 };
- int thcode[TSC_MAX_NUM][3] = {
- { 3397, 2800, 2221 },
- { 3393, 2795, 2216 },
- { 3389, 2805, 2237 },
- };
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
@@ -385,11 +429,12 @@
ret = PTR_ERR(tsc->base);
goto error_unregister;
}
+ tsc->id = i;
priv->tscs[i] = tsc;
priv->thermal_init(tsc);
- rcar_gen3_thermal_calc_coefs(&tsc->coef, ptat, thcode[i]);
+ rcar_gen3_thermal_calc_coefs(tsc, ptat, thcodes[i], *ths_tj_1);
zone = devm_thermal_zone_of_sensor_register(dev, i, tsc,
&rcar_gen3_tz_of_ops);
@@ -400,9 +445,20 @@
}
tsc->zone = zone;
+ tsc->zone->tzp->no_hwmon = false;
+ ret = thermal_add_hwmon_sysfs(tsc->zone);
+ if (ret)
+ goto error_unregister;
+
+ ret = devm_add_action_or_reset(dev, rcar_gen3_hwmon_action, zone);
+ if (ret)
+ goto error_unregister;
+
ret = of_thermal_get_ntrips(tsc->zone);
if (ret < 0)
goto error_unregister;
+
+ rcar_gen3_thermal_update_range(tsc);
dev_info(dev, "TSC%d: Loaded %d trip points\n", i, ret);
}
@@ -442,7 +498,7 @@
struct rcar_gen3_thermal_tsc *tsc = priv->tscs[i];
priv->thermal_init(tsc);
- rcar_gen3_thermal_set_trips(tsc, tsc->low, tsc->high);
+ rcar_gen3_thermal_update_range(tsc);
}
rcar_thermal_irq_set(priv, true);
--
Gitblit v1.6.2