thermal: db8500: Finalize device tree conversion

At some point there was an attempt to convert the DB8500
thermal sensor to device tree: a probe path was added
and the device tree was augmented for the Snowball board.
The switchover was never completed: instead the thermal
devices came from from the PRCMU MFD device and the probe
on the Snowball was confused as another set of configuration
appeared from the device tree.

Move over to a device-tree only approach, as we fixed up
the device trees.

Cc: Vincent Guittot <vincent.guittot@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>

4 files changed, 17 insertions, 97 deletions

diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c
index 90e0f21bc49c..518439c79826 100644
--- a/drivers/mfd/db8500-prcmu.c
+++ b/drivers/mfd/db8500-prcmu.c
@@ -36,7 +36,6 @@
 #include <linux/regulator/db8500-prcmu.h>
 #include <linux/regulator/machine.h>
 #include <linux/platform_data/ux500_wdt.h>
-#include <linux/platform_data/db8500_thermal.h>
 #include "dbx500-prcmu-regs.h"
 
 /* Index of different voltages to be used when accessing AVSData */
@@ -2984,53 +2983,6 @@ static struct ux500_wdt_data db8500_wdt_pdata = {
         .timeout = 600, /* 10 minutes */
         .has_28_bits_resolution = true,
 };
-/*
- * Thermal Sensor
- */
-
-static struct resource db8500_thsens_resources[] = {
-        {
-                .name = "IRQ_HOTMON_LOW",
-                .start  = IRQ_PRCMU_HOTMON_LOW,
-                .end    = IRQ_PRCMU_HOTMON_LOW,
-                .flags  = IORESOURCE_IRQ,
-        },
-        {
-                .name = "IRQ_HOTMON_HIGH",
-                .start  = IRQ_PRCMU_HOTMON_HIGH,
-                .end    = IRQ_PRCMU_HOTMON_HIGH,
-                .flags  = IORESOURCE_IRQ,
-        },
-};
-
-static struct db8500_thsens_platform_data db8500_thsens_data = {
-        .trip_points[0] = {
-                .temp = 70000,
-                .type = THERMAL_TRIP_ACTIVE,
-                .cdev_name = {
-                        [0] = "thermal-cpufreq-0",
-                },
-        },
-        .trip_points[1] = {
-                .temp = 75000,
-                .type = THERMAL_TRIP_ACTIVE,
-                .cdev_name = {
-                        [0] = "thermal-cpufreq-0",
-                },
-        },
-        .trip_points[2] = {
-                .temp = 80000,
-                .type = THERMAL_TRIP_ACTIVE,
-                .cdev_name = {
-                        [0] = "thermal-cpufreq-0",
-                },
-        },
-        .trip_points[3] = {
-                .temp = 85000,
-                .type = THERMAL_TRIP_CRITICAL,
-        },
-        .num_trips = 4,
-};
 
 static const struct mfd_cell common_prcmu_devs[] = {
         {
@@ -3054,10 +3006,7 @@ static const struct mfd_cell db8500_prcmu_devs[] = {
         },
         {
                 .name = "db8500-thermal",
-                .num_resources = ARRAY_SIZE(db8500_thsens_resources),
-                .resources = db8500_thsens_resources,
-                .platform_data = &db8500_thsens_data,
-                .pdata_size = sizeof(db8500_thsens_data),
+                .of_compatible = "stericsson,db8500-thermal",
         },
 };
 
diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
index 9966364a6deb..001a21abcc28 100644
--- a/drivers/thermal/Kconfig
+++ b/drivers/thermal/Kconfig
@@ -310,7 +310,7 @@ config DOVE_THERMAL
 
 config DB8500_THERMAL
         tristate "DB8500 thermal management"
-        depends on MFD_DB8500_PRCMU
+        depends on MFD_DB8500_PRCMU && OF
         default y
         help
           Adds DB8500 thermal management implementation according to the thermal
diff --git a/drivers/thermal/db8500_thermal.c b/drivers/thermal/db8500_thermal.c
index b71a999d17d6..d650ae5fdf2a 100644
--- a/drivers/thermal/db8500_thermal.c
+++ b/drivers/thermal/db8500_thermal.c
@@ -13,13 +13,24 @@
 #include <linux/mfd/dbx500-prcmu.h>
 #include <linux/module.h>
 #include <linux/of.h>
-#include <linux/platform_data/db8500_thermal.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/thermal.h>
 
 #define PRCMU_DEFAULT_MEASURE_TIME      0xFFF
 #define PRCMU_DEFAULT_LOW_TEMP          0
+#define COOLING_DEV_MAX 8
+
+struct db8500_trip_point {
+        unsigned long temp;
+        enum thermal_trip_type type;
+        char cdev_name[COOLING_DEV_MAX][THERMAL_NAME_LENGTH];
+};
+
+struct db8500_thsens_platform_data {
+        struct db8500_trip_point trip_points[THERMAL_MAX_TRIPS];
+        int num_trips;
+};
 
 struct db8500_thermal_zone {
         struct thermal_zone_device *therm_dev;
@@ -301,7 +312,6 @@ static void db8500_thermal_work(struct work_struct *work)
         dev_dbg(&pzone->therm_dev->device, "thermal work finished.\n");
 }
 
-#ifdef CONFIG_OF
 static struct db8500_thsens_platform_data*
                 db8500_thermal_parse_dt(struct platform_device *pdev)
 {
@@ -370,13 +380,6 @@ err_parse_dt:
         dev_err(&pdev->dev, "Parsing device tree data error.\n");
         return NULL;
 }
-#else
-static inline struct db8500_thsens_platform_data*
-                db8500_thermal_parse_dt(struct platform_device *pdev)
-{
-        return NULL;
-}
-#endif
 
 static int db8500_thermal_probe(struct platform_device *pdev)
 {
@@ -386,11 +389,10 @@ static int db8500_thermal_probe(struct platform_device *pdev)
         int low_irq, high_irq, ret = 0;
         unsigned long dft_low, dft_high;
 
-        if (np)
-                ptrips = db8500_thermal_parse_dt(pdev);
-        else
-                ptrips = dev_get_platdata(&pdev->dev);
+        if (!np)
+                return -EINVAL;
 
+        ptrips = db8500_thermal_parse_dt(pdev);
         if (!ptrips)
                 return -EINVAL;
 
@@ -498,13 +500,11 @@ static int db8500_thermal_resume(struct platform_device *pdev)
         return 0;
 }
 
-#ifdef CONFIG_OF
 static const struct of_device_id db8500_thermal_match[] = {
         { .compatible = "stericsson,db8500-thermal" },
         {},
 };
 MODULE_DEVICE_TABLE(of, db8500_thermal_match);
-#endif
 
 static struct platform_driver db8500_thermal_driver = {
         .driver = {
diff --git a/include/linux/platform_data/db8500_thermal.h b/include/linux/platform_data/db8500_thermal.h
deleted file mode 100644
index 55e55750a165..000000000000
--- a/include/linux/platform_data/db8500_thermal.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * db8500_thermal.h - DB8500 Thermal Management Implementation
- *
- * Copyright (C) 2012 ST-Ericsson
- * Copyright (C) 2012 Linaro Ltd.
- *
- * Author: Hongbo Zhang <hongbo.zhang@linaro.com>
- */
-
-#ifndef _DB8500_THERMAL_H_
-#define _DB8500_THERMAL_H_
-
-#include <linux/thermal.h>
-
-#define COOLING_DEV_MAX 8
-
-struct db8500_trip_point {
-        unsigned long temp;
-        enum thermal_trip_type type;
-        char cdev_name[COOLING_DEV_MAX][THERMAL_NAME_LENGTH];
-};
-
-struct db8500_thsens_platform_data {
-        struct db8500_trip_point trip_points[THERMAL_MAX_TRIPS];
-        int num_trips;
-};
-
-#endif /* _DB8500_THERMAL_H_ */