Commit edeab75b authored by Wolfram Sang's avatar Wolfram Sang Committed by Daniel Lezcano
Browse files

drivers/thermal/rcar_gen3_thermal: add reading fuses for Gen4 



The registers are differently named and at different offsets, but their
functionality is the same as for Gen3.

Signed-off-by: default avatarWolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: default avatarNiklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: default avatarYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: default avatarYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20230511192220.7523-4-wsa+renesas@sang-engineering.com
parent a216261d

drivers/thermal/rcar_gen3_thermal.c

+42 −2
Original line number Diff line number Diff line
@@ -35,6 +35,12 @@ 
#define REG_GEN3_PTAT2		0x60

#define REG_GEN3_PTAT3		0x64

#define REG_GEN3_THSCP		0x68

#define REG_GEN4_THSFMON00	0x180

#define REG_GEN4_THSFMON01	0x184

#define REG_GEN4_THSFMON02	0x188

#define REG_GEN4_THSFMON15	0x1BC

#define REG_GEN4_THSFMON16	0x1C0

#define REG_GEN4_THSFMON17	0x1C4



/* IRQ{STR,MSK,EN} bits */

#define IRQ_TEMP1		BIT(0)
@@ -55,6 +61,7 @@ 


#define MCELSIUS(temp)	((temp) * 1000)

#define GEN3_FUSE_MASK	0xFFF

#define GEN4_FUSE_MASK	0xFFF



#define TSC_MAX_NUM	5
@@ -272,6 +279,34 @@ static void rcar_gen3_thermal_read_fuses_gen3(struct rcar_gen3_thermal_priv *pri 
	}

}



static void rcar_gen3_thermal_read_fuses_gen4(struct rcar_gen3_thermal_priv *priv)

{

	unsigned int i;



	/*

	 * Set the pseudo calibration points with fused values.

	 * PTAT is shared between all TSCs but only fused for the first

	 * TSC while THCODEs are fused for each TSC.

	 */

	priv->ptat[0] = rcar_gen3_thermal_read(priv->tscs[0], REG_GEN4_THSFMON16) &

		GEN4_FUSE_MASK;

	priv->ptat[1] = rcar_gen3_thermal_read(priv->tscs[0], REG_GEN4_THSFMON17) &

		GEN4_FUSE_MASK;

	priv->ptat[2] = rcar_gen3_thermal_read(priv->tscs[0], REG_GEN4_THSFMON15) &

		GEN4_FUSE_MASK;



	for (i = 0; i < priv->num_tscs; i++) {

		struct rcar_gen3_thermal_tsc *tsc = priv->tscs[i];



		tsc->thcode[0] = rcar_gen3_thermal_read(tsc, REG_GEN4_THSFMON01) &

			GEN4_FUSE_MASK;

		tsc->thcode[1] = rcar_gen3_thermal_read(tsc, REG_GEN4_THSFMON02) &

			GEN4_FUSE_MASK;

		tsc->thcode[2] = rcar_gen3_thermal_read(tsc, REG_GEN4_THSFMON00) &

			GEN4_FUSE_MASK;

	}

}



static bool rcar_gen3_thermal_read_fuses(struct rcar_gen3_thermal_priv *priv)

{

	unsigned int i;
@@ -343,6 +378,11 @@ static const struct rcar_thermal_info rcar_gen3_thermal_info = { 
	.read_fuses = rcar_gen3_thermal_read_fuses_gen3,

};



static const struct rcar_thermal_info rcar_gen4_thermal_info = {

	.ths_tj_1 = 126,

	.read_fuses = rcar_gen3_thermal_read_fuses_gen4,

};



static const struct of_device_id rcar_gen3_thermal_dt_ids[] = {

	{

		.compatible = "renesas,r8a774a1-thermal",
@@ -382,11 +422,11 @@ static const struct of_device_id rcar_gen3_thermal_dt_ids[] = { 
	},

	{

		.compatible = "renesas,r8a779f0-thermal",

		.data = &rcar_gen3_thermal_info,

		.data = &rcar_gen4_thermal_info,

	},

	{

		.compatible = "renesas,r8a779g0-thermal",

		.data = &rcar_gen3_thermal_info,

		.data = &rcar_gen4_thermal_info,

	},

	{},

};