mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-29 18:19:02 +00:00
fef6a96d9e
Allows to check cpu temperature. Huge thanks to @hnyman for valuable assistance! Signed-off-by: Pavel Kubelun <be.dissent@gmail.com>
166 lines
5.1 KiB
Diff
166 lines
5.1 KiB
Diff
From 840a5bd3ed3fdd62456d4d26c3128ec10496555b Mon Sep 17 00:00:00 2001
|
|
From: Rajendra Nayak <rnayak@codeaurora.org>
|
|
Date: Thu, 5 May 2016 14:21:40 +0530
|
|
Subject: thermal: qcom: tsens-8916: Add support for 8916 family of SoCs
|
|
|
|
Add support to calibrate sensors on 8916 family and also add common
|
|
functions to read temperature from sensors (This can be reused on
|
|
other SoCs having similar TSENS device)
|
|
The calibration data is read from eeprom using the generic nvmem
|
|
framework apis.
|
|
|
|
Based on the original code by Siddartha Mohanadoss and Stephen Boyd.
|
|
|
|
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
|
|
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
|
|
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
|
|
---
|
|
drivers/thermal/qcom/Makefile | 2 +-
|
|
drivers/thermal/qcom/tsens-8916.c | 113 ++++++++++++++++++++++++++++++++++++++
|
|
drivers/thermal/qcom/tsens.c | 1 +
|
|
drivers/thermal/qcom/tsens.h | 2 +
|
|
4 files changed, 117 insertions(+), 1 deletion(-)
|
|
create mode 100644 drivers/thermal/qcom/tsens-8916.c
|
|
|
|
--- a/drivers/thermal/qcom/Makefile
|
|
+++ b/drivers/thermal/qcom/Makefile
|
|
@@ -1,2 +1,2 @@
|
|
obj-$(CONFIG_QCOM_TSENS) += qcom_tsens.o
|
|
-qcom_tsens-y += tsens.o tsens-common.o
|
|
+qcom_tsens-y += tsens.o tsens-common.o tsens-8916.o
|
|
--- /dev/null
|
|
+++ b/drivers/thermal/qcom/tsens-8916.c
|
|
@@ -0,0 +1,113 @@
|
|
+/*
|
|
+ * Copyright (c) 2015, The Linux Foundation. All rights reserved.
|
|
+ *
|
|
+ * This program is free software; you can redistribute it and/or modify
|
|
+ * it under the terms of the GNU General Public License version 2 and
|
|
+ * only version 2 as published by the Free Software Foundation.
|
|
+ *
|
|
+ * This program is distributed in the hope that it will be useful,
|
|
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
+ * GNU General Public License for more details.
|
|
+ *
|
|
+ */
|
|
+
|
|
+#include <linux/platform_device.h>
|
|
+#include "tsens.h"
|
|
+
|
|
+/* eeprom layout data for 8916 */
|
|
+#define BASE0_MASK 0x0000007f
|
|
+#define BASE1_MASK 0xfe000000
|
|
+#define BASE0_SHIFT 0
|
|
+#define BASE1_SHIFT 25
|
|
+
|
|
+#define S0_P1_MASK 0x00000f80
|
|
+#define S1_P1_MASK 0x003e0000
|
|
+#define S2_P1_MASK 0xf8000000
|
|
+#define S3_P1_MASK 0x000003e0
|
|
+#define S4_P1_MASK 0x000f8000
|
|
+
|
|
+#define S0_P2_MASK 0x0001f000
|
|
+#define S1_P2_MASK 0x07c00000
|
|
+#define S2_P2_MASK 0x0000001f
|
|
+#define S3_P2_MASK 0x00007c00
|
|
+#define S4_P2_MASK 0x01f00000
|
|
+
|
|
+#define S0_P1_SHIFT 7
|
|
+#define S1_P1_SHIFT 17
|
|
+#define S2_P1_SHIFT 27
|
|
+#define S3_P1_SHIFT 5
|
|
+#define S4_P1_SHIFT 15
|
|
+
|
|
+#define S0_P2_SHIFT 12
|
|
+#define S1_P2_SHIFT 22
|
|
+#define S2_P2_SHIFT 0
|
|
+#define S3_P2_SHIFT 10
|
|
+#define S4_P2_SHIFT 20
|
|
+
|
|
+#define CAL_SEL_MASK 0xe0000000
|
|
+#define CAL_SEL_SHIFT 29
|
|
+
|
|
+static int calibrate_8916(struct tsens_device *tmdev)
|
|
+{
|
|
+ int base0 = 0, base1 = 0, i;
|
|
+ u32 p1[5], p2[5];
|
|
+ int mode = 0;
|
|
+ u32 *qfprom_cdata, *qfprom_csel;
|
|
+
|
|
+ qfprom_cdata = (u32 *)qfprom_read(tmdev->dev, "calib");
|
|
+ if (IS_ERR(qfprom_cdata))
|
|
+ return PTR_ERR(qfprom_cdata);
|
|
+
|
|
+ qfprom_csel = (u32 *)qfprom_read(tmdev->dev, "calib_sel");
|
|
+ if (IS_ERR(qfprom_csel))
|
|
+ return PTR_ERR(qfprom_csel);
|
|
+
|
|
+ mode = (qfprom_csel[0] & CAL_SEL_MASK) >> CAL_SEL_SHIFT;
|
|
+ dev_dbg(tmdev->dev, "calibration mode is %d\n", mode);
|
|
+
|
|
+ switch (mode) {
|
|
+ case TWO_PT_CALIB:
|
|
+ base1 = (qfprom_cdata[1] & BASE1_MASK) >> BASE1_SHIFT;
|
|
+ p2[0] = (qfprom_cdata[0] & S0_P2_MASK) >> S0_P2_SHIFT;
|
|
+ p2[1] = (qfprom_cdata[0] & S1_P2_MASK) >> S1_P2_SHIFT;
|
|
+ p2[2] = (qfprom_cdata[1] & S2_P2_MASK) >> S2_P2_SHIFT;
|
|
+ p2[3] = (qfprom_cdata[1] & S3_P2_MASK) >> S3_P2_SHIFT;
|
|
+ p2[4] = (qfprom_cdata[1] & S4_P2_MASK) >> S4_P2_SHIFT;
|
|
+ for (i = 0; i < tmdev->num_sensors; i++)
|
|
+ p2[i] = ((base1 + p2[i]) << 3);
|
|
+ /* Fall through */
|
|
+ case ONE_PT_CALIB2:
|
|
+ base0 = (qfprom_cdata[0] & BASE0_MASK);
|
|
+ p1[0] = (qfprom_cdata[0] & S0_P1_MASK) >> S0_P1_SHIFT;
|
|
+ p1[1] = (qfprom_cdata[0] & S1_P1_MASK) >> S1_P1_SHIFT;
|
|
+ p1[2] = (qfprom_cdata[0] & S2_P1_MASK) >> S2_P1_SHIFT;
|
|
+ p1[3] = (qfprom_cdata[1] & S3_P1_MASK) >> S3_P1_SHIFT;
|
|
+ p1[4] = (qfprom_cdata[1] & S4_P1_MASK) >> S4_P1_SHIFT;
|
|
+ for (i = 0; i < tmdev->num_sensors; i++)
|
|
+ p1[i] = (((base0) + p1[i]) << 3);
|
|
+ break;
|
|
+ default:
|
|
+ for (i = 0; i < tmdev->num_sensors; i++) {
|
|
+ p1[i] = 500;
|
|
+ p2[i] = 780;
|
|
+ }
|
|
+ break;
|
|
+ }
|
|
+
|
|
+ compute_intercept_slope(tmdev, p1, p2, mode);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+const struct tsens_ops ops_8916 = {
|
|
+ .init = init_common,
|
|
+ .calibrate = calibrate_8916,
|
|
+ .get_temp = get_temp_common,
|
|
+};
|
|
+
|
|
+const struct tsens_data data_8916 = {
|
|
+ .num_sensors = 5,
|
|
+ .ops = &ops_8916,
|
|
+ .hw_ids = (unsigned int []){0, 1, 2, 4, 5 },
|
|
+};
|
|
--- a/drivers/thermal/qcom/tsens.c
|
|
+++ b/drivers/thermal/qcom/tsens.c
|
|
@@ -65,6 +65,7 @@ static SIMPLE_DEV_PM_OPS(tsens_pm_ops, t
|
|
static const struct of_device_id tsens_table[] = {
|
|
{
|
|
.compatible = "qcom,msm8916-tsens",
|
|
+ .data = &data_8916,
|
|
}, {
|
|
.compatible = "qcom,msm8974-tsens",
|
|
},
|
|
--- a/drivers/thermal/qcom/tsens.h
|
|
+++ b/drivers/thermal/qcom/tsens.h
|
|
@@ -87,4 +87,6 @@ void compute_intercept_slope(struct tsen
|
|
int init_common(struct tsens_device *);
|
|
int get_temp_common(struct tsens_device *, int, int *);
|
|
|
|
+extern const struct tsens_data data_8916;
|
|
+
|
|
#endif /* __QCOM_TSENS_H__ */
|