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[87.7.31.173]) by smtp.googlemail.com with ESMTPSA id u1sm7477611wrb.78.2020.07.15.19.28.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Jul 2020 19:28:37 -0700 (PDT) From: Ansuel Smith To: Rob Herring Cc: Ansuel Smith , Andy Gross , Bjorn Andersson , Amit Kucheria , Zhang Rui , Daniel Lezcano , Michael Turquette , Stephen Boyd , linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org Subject: [PATCH v4 7/7] drivers: thermal: tsens: add set_trip support for 8960 Date: Thu, 16 Jul 2020 04:28:16 +0200 Message-Id: <20200716022817.30439-8-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200716022817.30439-1-ansuelsmth@gmail.com> References: <20200716022817.30439-1-ansuelsmth@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add custom set_trip function for 8960 needed to set trip point to the tsens driver for 8960 driver. Signed-off-by: Ansuel Smith --- drivers/thermal/qcom/tsens-8960.c | 78 +++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/drivers/thermal/qcom/tsens-8960.c b/drivers/thermal/qcom/tsens-8960.c index 20d0bfb10f1f..4ad65ab3fd18 100644 --- a/drivers/thermal/qcom/tsens-8960.c +++ b/drivers/thermal/qcom/tsens-8960.c @@ -93,6 +93,15 @@ TSENS_8064_SENSOR9_EN | \ TSENS_8064_SENSOR10_EN) +/* Trips: from very hot to very cold */ +enum tsens_trip_type { + TSENS_TRIP_STAGE3 = 0, + TSENS_TRIP_STAGE2, + TSENS_TRIP_STAGE1, + TSENS_TRIP_STAGE0, + TSENS_TRIP_NUM, +}; + u32 tsens_8960_slope[] = { 1176, 1176, 1154, 1176, 1111, 1132, 1132, 1199, @@ -110,6 +119,16 @@ static inline int code_to_mdegC(u32 adc_code, const struct tsens_sensor *s) return adc_code * slope + offset; } +static int mdegC_to_code(int degC, const struct tsens_sensor *s) +{ + int slope, offset; + + slope = thermal_zone_get_slope(s->tzd); + offset = CAL_MDEGC - slope * s->offset; + + return degC / slope - offset; +} + static void notify_uspace_tsens_fn(struct work_struct *work) { struct tsens_sensor *s = container_of(work, struct tsens_sensor, @@ -448,6 +467,64 @@ static int get_temp_8960(const struct tsens_sensor *s, int *temp) return -ETIMEDOUT; } +static int set_trip_temp_ipq8064(void *data, int trip, int temp) +{ + unsigned int reg_th, reg_cntl; + int ret, code, code_chk, hi_code, lo_code; + const struct tsens_sensor *s = data; + struct tsens_priv *priv = s->priv; + + code = mdegC_to_code(temp, s); + code_chk = code; + + if (code < THRESHOLD_MIN_CODE || code > THRESHOLD_MAX_CODE) + return -EINVAL; + + ret = regmap_read(priv->tm_map, STATUS_CNTL_ADDR_8064, ®_cntl); + if (ret) + return ret; + + ret = regmap_read(priv->tm_map, THRESHOLD_ADDR, ®_th); + if (ret) + return ret; + + hi_code = (reg_th & THRESHOLD_UPPER_LIMIT_MASK) + >> THRESHOLD_UPPER_LIMIT_SHIFT; + lo_code = (reg_th & THRESHOLD_LOWER_LIMIT_MASK) + >> THRESHOLD_LOWER_LIMIT_SHIFT; + + switch (trip) { + case TSENS_TRIP_STAGE3: + code <<= THRESHOLD_MAX_LIMIT_SHIFT; + reg_th &= ~THRESHOLD_MAX_LIMIT_MASK; + break; + case TSENS_TRIP_STAGE2: + if (code_chk <= lo_code) + return -EINVAL; + code <<= THRESHOLD_UPPER_LIMIT_SHIFT; + reg_th &= ~THRESHOLD_UPPER_LIMIT_MASK; + break; + case TSENS_TRIP_STAGE1: + if (code_chk >= hi_code) + return -EINVAL; + code <<= THRESHOLD_LOWER_LIMIT_SHIFT; + reg_th &= ~THRESHOLD_LOWER_LIMIT_MASK; + break; + case TSENS_TRIP_STAGE0: + code <<= THRESHOLD_MIN_LIMIT_SHIFT; + reg_th &= ~THRESHOLD_MIN_LIMIT_MASK; + break; + default: + return -EINVAL; + } + + ret = regmap_write(priv->tm_map, THRESHOLD_ADDR, reg_th | code); + if (ret) + return ret; + + return 0; +} + static const struct tsens_ops ops_8960 = { .init = init_8960, .calibrate = calibrate_8960, @@ -456,6 +533,7 @@ static const struct tsens_ops ops_8960 = { .disable = disable_8960, .suspend = suspend_8960, .resume = resume_8960, + .set_trip_temp = set_trip_temp_ipq8064, }; struct tsens_plat_data data_8960 = { -- 2.27.0