From 20386f0d84a22214d1f037dedfffb6709dd0117a Mon Sep 17 00:00:00 2001 From: Yoshihiro Kaneko Date: Wed, 8 May 2019 13:08:45 +0200 Subject: [PATCH] thermal: rcar_thermal: update calculation formula for R-Car Gen3 SoCs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Update calculation for the R-Car Gen3 and RZ/G2 SoCs which have a thermal IP block controlled by this driver. That is the: * R-Car D3 (r8a77995) * R-Car E2 (r8a77990) * R-Car V3M (r8a77970) * RZ/G2E (r8a774c0) The calculation update is as documented in the R-Car Gen3 User's Manual, v1.50 Nov 2018: - When CTEMP is less than 24 T = CTEMP[5:0] * 5.5 - 72 - When CTEMP is equal to/greater than 24 T = CTEMP[5:0] * 5 - 60 This was inspired by a patch in the BSP by Van Do Signed-off-by: Yoshihiro Kaneko Tested-by: Simon Horman Acked-by: Wolfram Sang Reviewed-by: Niklas Söderlund Signed-off-by: Simon Horman Signed-off-by: Eduardo Valentin --- drivers/thermal/rcar_thermal.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c index 97462e9b40d8..d0873de718da 100644 --- a/drivers/thermal/rcar_thermal.c +++ b/drivers/thermal/rcar_thermal.c @@ -52,6 +52,7 @@ struct rcar_thermal_chip { unsigned int irq_per_ch : 1; unsigned int needs_suspend_resume : 1; unsigned int nirqs; + unsigned int ctemp_bands; }; static const struct rcar_thermal_chip rcar_thermal = { @@ -60,6 +61,7 @@ static const struct rcar_thermal_chip rcar_thermal = { .irq_per_ch = 0, .needs_suspend_resume = 0, .nirqs = 1, + .ctemp_bands = 1, }; static const struct rcar_thermal_chip rcar_gen2_thermal = { @@ -68,6 +70,7 @@ static const struct rcar_thermal_chip rcar_gen2_thermal = { .irq_per_ch = 0, .needs_suspend_resume = 0, .nirqs = 1, + .ctemp_bands = 1, }; static const struct rcar_thermal_chip rcar_gen3_thermal = { @@ -80,6 +83,7 @@ static const struct rcar_thermal_chip rcar_gen3_thermal = { * interrupts to detect a temperature change, rise or fall. */ .nirqs = 2, + .ctemp_bands = 2, }; struct rcar_thermal_priv { @@ -263,7 +267,12 @@ static int rcar_thermal_get_current_temp(struct rcar_thermal_priv *priv, return ret; mutex_lock(&priv->lock); - tmp = MCELSIUS((priv->ctemp * 5) - 65); + if (priv->chip->ctemp_bands == 1) + tmp = MCELSIUS((priv->ctemp * 5) - 65); + else if (priv->ctemp < 24) + tmp = MCELSIUS(((priv->ctemp * 55) - 720) / 10); + else + tmp = MCELSIUS((priv->ctemp * 5) - 60); mutex_unlock(&priv->lock); if ((tmp < MCELSIUS(-45)) || (tmp > MCELSIUS(125))) {