Commit 6c7f87f5 authored by Cosmin Tanislav's avatar Cosmin Tanislav Committed by Daniel Lezcano
Browse files

thermal: renesas: rzg3e: make min and max temperature per-chip 



The Renesas RZ/T2H (R9A09G077) and RZ/N2H (R9A09G087) SoCs have
different minimum and maximum temperatures compared to the already
supported RZ/G3E.

Prepare for them by moving these into a chip-specific struct.

Reviewed-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: default avatarJohn Madieu <john.madieu.xa@bp.renesas.com>
Tested-by: default avatarJohn Madieu <john.madieu.xa@bp.renesas.com>
Signed-off-by: default avatarCosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com>
Link: https://patch.msgid.link/20260108195223.193531-3-cosmin-gabriel.tanislav.xa@renesas.com


Signed-off-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
parent 671d315c

drivers/thermal/renesas/rzg3e_thermal.c

+23 −12
Original line number Diff line number Diff line
@@ -62,8 +62,6 @@ 
#define TSU_SICR_CMPCLR	BIT(1)



/* Temperature calculation constants from datasheet */

#define TSU_TEMP_D		(-41)

#define TSU_TEMP_E		126

#define TSU_CODE_MAX		0xFFF



/* Timing specifications from datasheet */
@@ -72,6 +70,11 @@ 
#define TSU_POLL_DELAY_US	10	/* Polling interval */

#define TSU_MIN_CLOCK_RATE	24000000  /* TSU_PCLK minimum 24MHz */



struct rzg3e_thermal_info {

	int temp_d_mc;

	int temp_e_mc;

};



/**

 * struct rzg3e_thermal_priv - RZ/G3E TSU private data

 * @base: TSU register base
@@ -79,6 +82,7 @@ 
 * @syscon: regmap for calibration values

 * @zone: thermal zone device

 * @rstc: reset control

 * @info: chip type specific information

 * @trmval0: calibration value 0 (b)

 * @trmval1: calibration value 1 (c)

 * @trim_offset: offset for trim registers in syscon
@@ -90,6 +94,7 @@ struct rzg3e_thermal_priv { 
	struct regmap *syscon;

	struct thermal_zone_device *zone;

	struct reset_control *rstc;

	const struct rzg3e_thermal_info *info;

	u16 trmval0;

	u16 trmval1;

	u32 trim_offset;
@@ -161,17 +166,17 @@ static void rzg3e_thermal_power_off(struct rzg3e_thermal_priv *priv) 
 */

static int rzg3e_thermal_code_to_temp(struct rzg3e_thermal_priv *priv, u16 code)

{

	int temp_e_mc = TSU_TEMP_E * MILLIDEGREE_PER_DEGREE;

	int temp_d_mc = TSU_TEMP_D * MILLIDEGREE_PER_DEGREE;

	const struct rzg3e_thermal_info *info = priv->info;

	s64 numerator, denominator;

	int temp_mc;



	numerator = (temp_e_mc - temp_d_mc) * (s64)(code - priv->trmval0);

	numerator = (info->temp_e_mc - info->temp_d_mc) *

		    (s64)(code - priv->trmval0);

	denominator = priv->trmval1 - priv->trmval0;



	temp_mc = div64_s64(numerator, denominator) + temp_d_mc;

	temp_mc = div64_s64(numerator, denominator) + info->temp_d_mc;



	return clamp(temp_mc, temp_d_mc, temp_e_mc);

	return clamp(temp_mc, info->temp_d_mc, info->temp_e_mc);

}



/*
@@ -180,13 +185,12 @@ static int rzg3e_thermal_code_to_temp(struct rzg3e_thermal_priv *priv, u16 code) 
 */

static u16 rzg3e_thermal_temp_to_code(struct rzg3e_thermal_priv *priv, int temp_mc)

{

	int temp_e_mc = TSU_TEMP_E * MILLIDEGREE_PER_DEGREE;

	int temp_d_mc = TSU_TEMP_D * MILLIDEGREE_PER_DEGREE;

	const struct rzg3e_thermal_info *info = priv->info;

	s64 numerator, denominator;

	s64 code;



	numerator = (temp_mc - temp_d_mc) * (priv->trmval1 - priv->trmval0);

	denominator = temp_e_mc - temp_d_mc;

	numerator = (temp_mc - info->temp_d_mc) * (priv->trmval1 - priv->trmval0);

	denominator = info->temp_e_mc - info->temp_d_mc;



	code = div64_s64(numerator, denominator) + priv->trmval0;
@@ -392,6 +396,8 @@ static int rzg3e_thermal_probe(struct platform_device *pdev) 
		return ret;

	platform_set_drvdata(pdev, priv);



	priv->info = device_get_match_data(dev);



	priv->base = devm_platform_ioremap_resource(pdev, 0);

	if (IS_ERR(priv->base))

		return PTR_ERR(priv->base);
@@ -526,8 +532,13 @@ static const struct dev_pm_ops rzg3e_thermal_pm_ops = { 
	SYSTEM_SLEEP_PM_OPS(rzg3e_thermal_suspend, rzg3e_thermal_resume)

};



static const struct rzg3e_thermal_info rzg3e_thermal_info = {

	.temp_d_mc = -41000,

	.temp_e_mc = 126000,

};



static const struct of_device_id rzg3e_thermal_dt_ids[] = {

	{ .compatible = "renesas,r9a09g047-tsu" },

	{ .compatible = "renesas,r9a09g047-tsu", .data = &rzg3e_thermal_info },

	{ /* sentinel */ }

};

MODULE_DEVICE_TABLE(of, rzg3e_thermal_dt_ids);