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[87.0.192.118]) by smtp.googlemail.com with ESMTPSA id s2sm6767118ejd.17.2020.08.14.06.42.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 14 Aug 2020 06:42:20 -0700 (PDT) From: Ansuel Smith To: Amit Kucheria Cc: Ansuel Smith , Andy Gross , Bjorn Andersson , Amit Kucheria , Zhang Rui , Daniel Lezcano , Rob Herring , linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH v6 5/8] drivers: thermal: tsens: Fix wrong get_temp for msm8960 Date: Fri, 14 Aug 2020 15:41:19 +0200 Message-Id: <20200814134123.14566-6-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200814134123.14566-1-ansuelsmth@gmail.com> References: <20200814134123.14566-1-ansuelsmth@gmail.com> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org msm8960 based tsens have an hardcoded slope. Fix the calibrate function with the new added slope, change code_to_mdegC to use slope and conver get_temp to use reg_field. Signed-off-by: Ansuel Smith --- drivers/thermal/qcom/tsens-8960.c | 43 +++++++++++++++++++++++-------- 1 file changed, 32 insertions(+), 11 deletions(-) diff --git a/drivers/thermal/qcom/tsens-8960.c b/drivers/thermal/qcom/tsens-8960.c index 93d2c6c7d1bd..ca83c7f838a5 100644 --- a/drivers/thermal/qcom/tsens-8960.c +++ b/drivers/thermal/qcom/tsens-8960.c @@ -67,6 +67,14 @@ #define S9_STATUS_OFF 0x3674 #define S10_STATUS_OFF 0x3678 +#define TSENS_FACTOR 1 + +u32 tsens_msm8960_slope[] = { + 1176, 1176, 1154, 1176, + 1111, 1132, 1132, 1199, + 1132, 1199, 1132 + }; + static int suspend_8960(struct tsens_priv *priv) { int ret; @@ -187,8 +195,10 @@ static int calibrate_8960(struct tsens_priv *priv) if (IS_ERR(data)) return PTR_ERR(data); - for (i = 0; i < num_read; i++, s++) - s->offset = data[i]; + for (i = 0; i < num_read; i++, s++) { + s->slope = tsens_msm8960_slope[i]; + s->offset = CAL_MDEGC - (data[i] * s->slope); + } kfree(data); @@ -198,32 +208,43 @@ static int calibrate_8960(struct tsens_priv *priv) /* Temperature on y axis and ADC-code on x-axis */ static inline int code_to_mdegC(u32 adc_code, const struct tsens_sensor *s) { - int slope, offset; + int num, degc; + + num = (adc_code * s->slope) + s->offset; - slope = thermal_zone_get_slope(s->tzd); - offset = CAL_MDEGC - slope * s->offset; + if (num == 0) + degc = num; + else if (num > 0) + degc = (num + TSENS_FACTOR / 2) + / TSENS_FACTOR; + else + degc = (num - TSENS_FACTOR / 2) + / TSENS_FACTOR; - return adc_code * slope + offset; + return degc; } static int get_temp_8960(const struct tsens_sensor *s, int *temp) { int ret; - u32 code, trdy; + u32 last_temp = 0, trdy; struct tsens_priv *priv = s->priv; unsigned long timeout; timeout = jiffies + usecs_to_jiffies(TIMEOUT_US); do { - ret = regmap_read(priv->tm_map, INT_STATUS_ADDR, &trdy); + ret = regmap_field_read(priv->rf[TRDY], &trdy); if (ret) return ret; - if (!(trdy & TRDY_MASK)) + if (!trdy) continue; - ret = regmap_read(priv->tm_map, s->status, &code); + + ret = regmap_field_read(priv->rf[LAST_TEMP_0 + s->hw_id], &last_temp); if (ret) return ret; - *temp = code_to_mdegC(code, s); + + *temp = code_to_mdegC(last_temp, s); + return 0; } while (time_before(jiffies, timeout));