Message-ID: <1992815.E6aCHrrhbE@diego>
Date:	Sun, 24 Aug 2014 01:33:40 +0200
From:	Heiko Stübner <heiko@...ech.de>
To:	Caesar Wang <caesar.wang@...k-chips.com>
Cc:	rui.zhang@...el.com, eduardo.valentin@...com,
	rdunlap@...radead.org, cf@...k-chips.com, grant.linkely@...aro.org,
	robh+dt@...nel.org, linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
	zyw@...k-chips.com, huangtao@...k-chips.com, xjq@...k-chips.com,
	addy.ke@...k-chips.com, dianders@...omium.org,
	zhaoyifeng <zyf@...k-chips.com>
Subject: Re: [PATCH 2/2] thermal: rockchip: add driver for Rockchip thermal

Am Samstag, 23. August 2014, 08:15:34 schrieb Caesar Wang:
> Thermal is TS-ADC Controller module supports user-defined mode and automatic
> mode.
> 
> User-defined mode refers,TSADC all the control signals entirely by software
> writing to register for direct control.
> 
> Automaic mode refers to the module automatically poll TSADC output,and the
> results Were checked.
> 
> If you find that the temperature High in a period of time, an interrupt is
> generated to the processor down-measures taken;if the temperature over a
> period of time High, the resulting TSHUT gave CRU module,let it reset the
> entire chip, or via GPIO give PMIC.
> 
> Signed-off-by: zhaoyifeng <zyf@...k-chips.com>
> Signed-off-by: Caesar Wang <caesar.wang@...k-chips.com>
> ---
>  drivers/thermal/Kconfig            |    9 +
>  drivers/thermal/Makefile           |    1 +
>  drivers/thermal/rockchip_thermal.c |  659
> ++++++++++++++++++++++++++++++++++++ 3 files changed, 669 insertions(+)
>  create mode 100644 drivers/thermal/rockchip_thermal.c
> 
> diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
> index 74226dc..43d2400 100644
> --- a/drivers/thermal/Kconfig
> +++ b/drivers/thermal/Kconfig
> @@ -141,6 +141,15 @@ config SPEAR_THERMAL
>  	  Enable this to plug the SPEAr thermal sensor driver into the Linux
>  	  thermal framework.
> 
> +config ROCKCHIP_THERMAL
> +	tristate "Rockchip thermal driver"
> +	depends on ARCH_ROCKCHIP
> +	help
> +	  Support for Temperature Sensor ADC (TS-ADC) found on Rockchip SoCs.
> +	  It supports one critical trip point and one passive trip point.  The
> +	  cpufreq is used as the cooling device to throttle CPUs when the
> +	  passive trip is crossed.
> +
>  config RCAR_THERMAL
>  	tristate "Renesas R-Car thermal driver"
>  	depends on ARCH_SHMOBILE || COMPILE_TEST
> diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile
> index 419c3cd..009a457 100644
> --- a/drivers/thermal/Makefile
> +++ b/drivers/thermal/Makefile
> @@ -20,6 +20,7 @@ thermal_sys-$(CONFIG_CPU_THERMAL)	+= cpu_cooling.o
> 
>  # platform thermal drivers
>  obj-$(CONFIG_SPEAR_THERMAL)	+= spear_thermal.o
> +obj-$(CONFIG_ROCKCHIP_THERMAL) 	+= rockchip_thermal.o
>  obj-$(CONFIG_RCAR_THERMAL)	+= rcar_thermal.o
>  obj-$(CONFIG_KIRKWOOD_THERMAL)  += kirkwood_thermal.o
>  obj-y				+= samsung/
> diff --git a/drivers/thermal/rockchip_thermal.c
> b/drivers/thermal/rockchip_thermal.c new file mode 100644
> index 0000000..93adb61
> --- /dev/null
> +++ b/drivers/thermal/rockchip_thermal.c
> @@ -0,0 +1,659 @@
> +/*
> + * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
> + * Author: Rockchip, Inc.

no need for a duplicate Author mark


> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms and conditions of the GNU General Public License,
> + * version 2, as published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope 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/clk.h>
> +#include <linux/io.h>
> +#include <linux/interrupt.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/of_address.h>
> +#include <linux/of_irq.h>
> +#include <linux/platform_device.h>
> +#include <linux/regulator/consumer.h>
> +#include <linux/cpu_cooling.h>
> +#include "thermal_core.h"
> +
> +enum rockchip_thermal_trip {
> +	ROCKCHIP_TRIP_PASSIVE,
> +	ROCKCHIP_TRIP_CRITICAL,
> +	ROCKCHIP_TRIP_NUM,
> +};
> +
> +struct rockchip_thermal_data {
> +	struct rockchip_tsadc_platform_data *pdata;
> +	struct thermal_zone_device *tz;
> +	struct thermal_cooling_device *cdev;
> +	enum thermal_device_mode mode;
> +	void __iomem *regs;
> +
> +	signed long temp_passive;
> +	signed long temp_critical;
> +	signed long temp_force_shut;
> +	signed long alarm_temp;
> +	signed long last_temp;
> +	bool irq_enabled;
> +	int irq;
> +	struct clk *tsadc_clk;
> +	struct clk *tsadc_pclk;
> +};
> +
> +struct rockchip_tsadc_platform_data {
> +	u8 irq_en;
> +	signed long temp_passive;
> +	signed long temp_critical;
> +	signed long temp_force_shut;
> +	int passive_delay;
> +	int polling_delay;
> +
> +	int (*irq_handle)(void __iomem *reg);
> +	int (*initialize)(void __iomem *reg, signed long temp_force_shut);
> +	int (*control)(void __iomem *reg, bool on);
> +	u32 (*code_to_temp)(int temp);
> +	u32 (*temp_to_code)(int temp);
> +	void (*set_alarm_temp)(void __iomem *regs, signed long temp);
> +};
> +
> +/*TSADC V2 Sensor info define:*/
> +#define TSADC_AUTO_CON			0x04
> +#define TSADC_INT_EN			0x08
> +#define TSADC_INT_PD			0x0c
> +#define TSADC_DATA1				0x24
> +#define TSADC_COMP1_INT			0x34
> +#define TSADC_COMP1_SHUT		0x44
> +#define TSADC_AUTO_PERIOD		0x68
> +#define TSADC_AUTO_PERIOD_HT	0x6c
> +
> +#define TSADC_AUTO_SRC1_EN			(1 << 5)
> +#define TSADC_AUTO_EN				(1 << 0)
> +#define TSADC_AUTO_DISABLE			~(1 << 0)
> +#define TSADC_AUTO_STAS_BUSY		(1 << 16)
> +#define TSADC_AUTO_STAS_BUSY_MASK	(1 << 16)
> +#define TSADC_SHUT_2GPIO_SRC1_EN	(1 << 5)
> +#define TSADC_INT_SRC1_EN			(1 << 1)
> +#define TSADC_SHUT_SRC1_STATUS		(1 << 5)
> +#define TSADC_INT_SRC1_STATUS		(1 << 1)
> +
> +#define TSADC_DATA_MASK					0xfff
> +#define TSADC_HIGHT_INT_DEBOUNCE		0x60
> +#define TSADC_HIGHT_TSHUT_DEBOUNCE		0x64
> +#define TSADC_HIGHT_INT_DEBOUNCE_TIME	0x0a
> +#define TSADC_HIGHT_TSHUT_DEBOUNCE_TIME	0x0a
> +#define TSADC_AUTO_PERIOD_TIME			0x03e8
> +#define TSADC_AUTO_PERIOD_HT_TIME		0x64

You could name them TSADCV2_xxxxx, as the variant found for example in the
rk3066 differs a lot.


> +
> +struct tsadc_table {
> +	int code;
> +	int temp;
> +};
> +
> +static const struct tsadc_table v2_code_table[] = {
> +	{TSADC_DATA_MASK, -40},
> +	{3800, -40},
> +	{3792, -35},
> +	{3783, -30},
> +	{3774, -25},
> +	{3765, -20},
> +	{3756, -15},
> +	{3747, -10},
> +	{3737, -5},
> +	{3728, 0},
> +	{3718, 5},
> +	{3708, 10},
> +	{3698, 15},
> +	{3688, 20},
> +	{3678, 25},
> +	{3667, 30},
> +	{3656, 35},
> +	{3645, 40},
> +	{3634, 45},
> +	{3623, 50},
> +	{3611, 55},
> +	{3600, 60},
> +	{3588, 65},
> +	{3575, 70},
> +	{3563, 75},
> +	{3550, 80},
> +	{3537, 85},
> +	{3524, 90},
> +	{3510, 95},
> +	{3496, 100},
> +	{3482, 105},
> +	{3467, 110},
> +	{3452, 115},
> +	{3437, 120},
> +	{3421, 125},
> +	{0, 125},
> +};
> +
> +static int rk_tsadcv2_irq_handle(void __iomem *regs)
> +{
> +	u32 val;
> +
> +	val = readl_relaxed(regs + TSADC_INT_PD);
> +	writel_relaxed(val & ~(1 << 8), regs + TSADC_INT_PD);
> +
> +	return 0;
> +}
> +
> +static u32 rk_tsadcv2_temp_to_code(int temp)
> +{
> +	u32 code = 0;
> +	int i;
> +
> +	for (i = 0; i < ARRAY_SIZE(v2_code_table) - 1; i++) {
> +		if (temp <= v2_code_table[i].temp && temp >
> +		    v2_code_table[i - 1].temp)
> +			code = v2_code_table[i].code;
> +	}
> +	return code;
> +}
> +
> +static u32 rk_tsadcv2_code_to_temp(int code)
> +{
> +	u32 temp = 0;
> +	int i;
> +
> +	for (i = 0; i < ARRAY_SIZE(v2_code_table) - 1; i++) {
> +		if (code <= v2_code_table[i].code && code >
> +		    v2_code_table[i + 1].code)
> +			temp = v2_code_table[i].temp;
> +	}
> +	return temp;
> +}
> +
> +int rk_tsadcv2_initialize(void __iomem *regs, signed long temp_force_shut)
> +{
> +	int shutdown_value;
> +
> +	shutdown_value = rk_tsadcv2_temp_to_code(temp_force_shut);
> +	/* Enable measurements at ~ 10 Hz */
> +	writel_relaxed(0, regs + TSADC_AUTO_CON);
> +	writel_relaxed(TSADC_AUTO_PERIOD_TIME, regs + TSADC_AUTO_PERIOD);
> +	writel_relaxed(TSADC_AUTO_PERIOD_HT_TIME, regs + TSADC_AUTO_PERIOD_HT);
> +	writel_relaxed(shutdown_value, regs + TSADC_COMP1_SHUT);
> +	writel_relaxed(TSADC_HIGHT_INT_DEBOUNCE_TIME, regs +
> +		       TSADC_HIGHT_INT_DEBOUNCE);
> +	writel_relaxed(TSADC_HIGHT_TSHUT_DEBOUNCE_TIME, regs +
> +		       TSADC_HIGHT_TSHUT_DEBOUNCE);
> +	writel_relaxed(TSADC_SHUT_2GPIO_SRC1_EN | TSADC_INT_SRC1_EN, regs +
> +		       TSADC_INT_EN);
> +	writel_relaxed(TSADC_AUTO_SRC1_EN | TSADC_AUTO_EN, regs +
> +		       TSADC_AUTO_CON);
> +	return 0;
> +}
> +
> +static int rk_tsadcv2_control(void __iomem *regs, bool on)
> +{
> +	u32 val;
> +
> +	if (on) {
> +		val = readl_relaxed(regs + TSADC_AUTO_CON);
> +		writel_relaxed(val | TSADC_AUTO_EN, regs + TSADC_AUTO_CON);
> +	} else {
> +		val = readl_relaxed(regs + TSADC_AUTO_CON);
> +		writel_relaxed(val & TSADC_AUTO_DISABLE, regs + TSADC_AUTO_CON);
> +	}
> +	return 0;
> +}
> +
> +static void rk_tsadcv2_alarm_temp(void __iomem *regs, signed long
> alarm_temp) +{
> +	int alarm_value;
> +
> +	alarm_value = rk_tsadcv2_temp_to_code(alarm_temp);
> +	writel_relaxed(alarm_value, regs + TSADC_COMP1_INT);
> +}
> +
> +struct rockchip_tsadc_platform_data const rk3288_tsadc_data = {
> +	.irq_en = 1,
> +	.temp_passive = 85000,
> +	.temp_critical = 100000,
> +	.temp_force_shut = 120000,
> +	.passive_delay = 2000,
> +	.polling_delay = 1000,
> +	.irq_handle = rk_tsadcv2_irq_handle,
> +	.initialize = rk_tsadcv2_initialize,
> +	.control = rk_tsadcv2_control,
> +	.code_to_temp = rk_tsadcv2_code_to_temp,
> +	.temp_to_code = rk_tsadcv2_temp_to_code,
> +	.set_alarm_temp = rk_tsadcv2_alarm_temp,
> +};
> +
> +static const struct of_device_id of_rockchip_thermal_match[] = {
> +	{
> +	 .compatible = "rockchip,rk3288-tsadc",
> +	 .data = (void *)&rk3288_tsadc_data,

the indentation is off here


> +	 },
> +	{ /* end */ }
> +};
> +
> +MODULE_DEVICE_TABLE(of, of_rockchip_thermal_match);
> +
> +static void rockchip_set_alarm_temp(struct rockchip_thermal_data *data,
> +				    signed long alarm_temp)
> +{
> +	struct rockchip_tsadc_platform_data *p_tsadc_data = data->pdata;
> +
> +	data->alarm_temp = alarm_temp;
> +	if (p_tsadc_data->set_alarm_temp)
> +		p_tsadc_data->set_alarm_temp(data->regs, alarm_temp);
> +}
> +
> +static int rockchip_get_temp(struct thermal_zone_device *tz,
> +			     unsigned long *temp)
> +{
> +	struct rockchip_thermal_data *data = tz->devdata;
> +	struct rockchip_tsadc_platform_data *p_tsadc_data = data->pdata;
> +	u32 val;
> +
> +	val = readl_relaxed(data->regs + TSADC_DATA1);
> +	*temp = p_tsadc_data->code_to_temp(val);
> +
> +	/* Update alarm value to next higher trip point */
> +	if (data->alarm_temp == data->temp_passive && *temp >=
> +	    data->temp_passive)
> +		rockchip_set_alarm_temp(data, data->temp_critical);
> +
> +	if (data->alarm_temp == data->temp_critical && *temp <
> +	    data->temp_passive) {
> +		rockchip_set_alarm_temp(data, data->temp_passive);
> +		dev_dbg(&tz->device, "thermal alarm off: T < %lu\n",
> +			data->alarm_temp / 1000);
> +	}
> +
> +	if (*temp != data->last_temp) {
> +		dev_dbg(&tz->device, "millicelsius: %ld\n", *temp);
> +		data->last_temp = *temp;
> +	}
> +
> +	/* Reenable alarm IRQ if temperature below alarm temperature */
> +	if (!data->irq_enabled && *temp < data->alarm_temp) {
> +		data->irq_enabled = true;
> +		enable_irq(data->irq);
> +	}
> +	return 0;
> +}
> +
> +static int rockchip_thermal_initialize(struct rockchip_thermal_data *data)
> +{
> +	struct rockchip_tsadc_platform_data *p_tsadc_data = data->pdata;
> +
> +	if (p_tsadc_data->initialize)
> +		p_tsadc_data->initialize(data->regs, data->temp_force_shut);
> +	rockchip_set_alarm_temp(data, data->temp_passive);
> +	return 0;
> +}
> +
> +static void rockchip_thermal_control(struct rockchip_thermal_data *data,
> +				     bool on)
> +{
> +	struct rockchip_tsadc_platform_data *p_tsadc_data = data->pdata;
> +
> +	if (p_tsadc_data->control)
> +		p_tsadc_data->control(data->regs, on);
> +
> +	if (on) {
> +		data->irq_enabled = true;
> +		data->mode = THERMAL_DEVICE_ENABLED;
> +	} else {
> +		data->irq_enabled = false;
> +		data->mode = THERMAL_DEVICE_DISABLED;
> +	}
> +}
> +
> +static int rockchip_get_mode(struct thermal_zone_device *tz,
> +			     enum thermal_device_mode *mode)
> +{
> +	struct rockchip_thermal_data *data = tz->devdata;
> +
> +	*mode = data->mode;
> +	return 0;
> +}
> +
> +static int rockchip_set_mode(struct thermal_zone_device *tz,
> +			     enum thermal_device_mode mode)
> +{
> +	struct rockchip_thermal_data *data = tz->devdata;
> +	struct rockchip_tsadc_platform_data *p_tsadc_data = data->pdata;
> +
> +	if (mode == THERMAL_DEVICE_ENABLED) {
> +		tz->polling_delay = p_tsadc_data->polling_delay;
> +		tz->passive_delay = p_tsadc_data->passive_delay;
> +		rockchip_thermal_control(data, true);
> +		if (!data->irq_enabled) {
> +			data->irq_enabled = true;
> +			enable_irq(data->irq);
> +		}
> +	} else {
> +		rockchip_thermal_control(data, false);
> +		tz->polling_delay = 0;
> +		tz->passive_delay = 0;
> +		if (data->irq_enabled) {
> +			disable_irq(data->irq);
> +			data->irq_enabled = false;
> +		}
> +	}
> +
> +	data->mode = mode;
> +	thermal_zone_device_update(tz);
> +	return 0;
> +}
> +
> +static int rockchip_get_trip_type(struct thermal_zone_device *tz, int trip,
> +				  enum thermal_trip_type *type)
> +{
> +	*type = (trip == ROCKCHIP_TRIP_PASSIVE) ? THERMAL_TRIP_PASSIVE :
> +	    THERMAL_TRIP_CRITICAL;
> +	return 0;
> +}
> +
> +static int rockchip_get_crit_temp(struct thermal_zone_device *tz,
> +				  unsigned long *temp)
> +{
> +	struct rockchip_thermal_data *data = tz->devdata;
> +
> +	*temp = data->temp_critical;
> +	return 0;
> +}
> +
> +static int rockchip_get_trip_temp(struct thermal_zone_device *tz, int trip,
> +				  unsigned long *temp)
> +{
> +	struct rockchip_thermal_data *data = tz->devdata;
> +
> +	*temp = (trip == ROCKCHIP_TRIP_PASSIVE) ? data->temp_passive :
> +	    data->temp_critical;
> +	return 0;
> +}
> +
> +static int rockchip_set_trip_temp(struct thermal_zone_device *tz, int trip,
> +				  unsigned long temp)
> +{
> +	struct rockchip_thermal_data *data = tz->devdata;
> +
> +	if (trip == ROCKCHIP_TRIP_CRITICAL)
> +		return -EPERM;
> +
> +	data->temp_passive = temp;
> +	rockchip_set_alarm_temp(data, temp);
> +	return 0;
> +}
> +
> +static int rockchip_bind(struct thermal_zone_device *tz,
> +			 struct thermal_cooling_device *cdev)
> +{
> +	int ret;
> +
> +	ret = thermal_zone_bind_cooling_device(tz, ROCKCHIP_TRIP_PASSIVE, cdev,
> +					       THERMAL_NO_LIMIT,
> +					       THERMAL_NO_LIMIT);
> +	if (ret) {
> +		dev_err(&tz->device, "binding zone %s with cdev %s failed:%d\n",
> +			tz->type, cdev->type, ret);
> +		return ret;
> +	}
> +	return 0;
> +}
> +
> +static int rockchip_unbind(struct thermal_zone_device *tz,
> +			   struct thermal_cooling_device *cdev)
> +{
> +	int ret;
> +
> +	ret = thermal_zone_unbind_cooling_device(tz,
> +						 ROCKCHIP_TRIP_PASSIVE, cdev);
> +	if (ret) {
> +		dev_err(&tz->device,
> +			"unbinding zone %s with cdev %s failed:%d\n", tz->type,
> +			cdev->type, ret);
> +		return ret;
> +	}
> +
> +	return 0;
> +}
> +
> +static struct thermal_zone_device_ops rockchip_tz_ops = {
> +	.bind = rockchip_bind,
> +	.unbind = rockchip_unbind,
> +	.get_temp = rockchip_get_temp,
> +	.get_mode = rockchip_get_mode,
> +	.set_mode = rockchip_set_mode,
> +	.get_trip_type = rockchip_get_trip_type,
> +	.get_trip_temp = rockchip_get_trip_temp,
> +	.get_crit_temp = rockchip_get_crit_temp,
> +	.set_trip_temp = rockchip_set_trip_temp,
> +};
> +
> +static irqreturn_t rockchip_thermal_alarm_irq(int irq, void *dev)
> +{
> +	struct rockchip_thermal_data *data = dev;
> +
> +	disable_irq_nosync(irq);
> +	data->irq_enabled = false;
> +
> +	return IRQ_WAKE_THREAD;
> +}
> +
> +static irqreturn_t rockchip_thermal_alarm_irq_thread(int irq, void *dev)
> +{
> +	struct rockchip_thermal_data *data = data;
> +	struct rockchip_tsadc_platform_data *p_tsadc_data = data->pdata;
> +
> +	dev_dbg(&data->tz->device, "THERMAL ALARM: T > %lu\n",
> +		data->alarm_temp / 1000);
> +
> +	if (p_tsadc_data->irq_en && p_tsadc_data->irq_handle)
> +		p_tsadc_data->irq_handle(data->regs);
> +
> +	thermal_zone_device_update(data->tz);
> +
> +	return IRQ_HANDLED;
> +}
> +
> +static int rockchip_thermal_probe(struct platform_device *pdev)
> +{
> +	struct rockchip_thermal_data *data;
> +	struct rockchip_tsadc_platform_data *p_tsadc_data;
> +	struct cpumask clip_cpus;
> +	struct resource *res;
> +	const struct of_device_id *match;
> +	int ret;
> +	int rate, temp;
> +
> +	data = devm_kzalloc(&pdev->dev, sizeof(struct rockchip_thermal_data),
> +			    GFP_KERNEL);
> +
> +	if (!data)
> +		return -ENOMEM;
> +
> +	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> +	data->regs = devm_ioremap_resource(&pdev->dev, res);
> +	if (IS_ERR(data->regs)) {
> +		dev_err(&pdev->dev, "Could not get tsadc source, %p\n",
> +			data->regs);
> +		return PTR_ERR(data->regs);
> +	}
> +
> +	match = of_match_node(of_rockchip_thermal_match, pdev->dev.of_node);
> +	if (!match)
> +		return -ENOMEM;
> +	data->pdata = (struct rockchip_tsadc_platform_data *)match->data;
> +	if (!data->pdata)
> +		return -ENOMEM;
> +	p_tsadc_data = data->pdata;
> +
> +	data->tsadc_clk = devm_clk_get(&pdev->dev, "tsadc_clk");
> +	if (IS_ERR(data->tsadc_clk)) {
> +		dev_err(&pdev->dev, "failed to get tsadc clock\n");
> +		ret = PTR_ERR(data->tsadc_clk);
> +		return -EPERM;
> +	}
> +
> +	if (of_property_read_u32(pdev->dev.of_node, "clock-frequency", &rate)) {
> +		dev_err(&pdev->dev,
> +			"Missing clock-frequency property in the DT.\n");
> +		return -EPERM;
> +	}
> +
> +	ret = clk_set_rate(data->tsadc_clk, rate);
> +	if (ret < 0) {
> +		dev_err(&pdev->dev, "failed to set adc clk\n");
> +		return -EPERM;
> +	}

If necessary to set at all, the rate should be set via the new
assigned-rate property


> +	clk_prepare_enable(data->tsadc_clk);
> +
> +	data->tsadc_pclk = devm_clk_get(&pdev->dev, "tsadc_pclk");
> +	if (IS_ERR(data->tsadc_pclk)) {
> +		dev_err(&pdev->dev, "failed to get tsadc pclk\n");
> +		ret = PTR_ERR(data->tsadc_pclk);
> +		return -EPERM;
> +	}
> +	clk_prepare_enable(data->tsadc_pclk);
> +
> +	platform_set_drvdata(pdev, data);
> +
> +	if (of_property_read_u32(pdev->dev.of_node, "passive-temp", &temp)) {
> +		dev_warn(&pdev->dev,
> +			 "Missing default passive temp property in the DT.\n");
> +		data->temp_passive = p_tsadc_data->temp_passive;
> +	} else {
> +		data->temp_passive = temp;
> +	}
> +
> +	if (of_property_read_u32(pdev->dev.of_node, "critical-temp", &temp)) {
> +		dev_warn(&pdev->dev,
> +			 "Missing default critical temp property in the DT.\n");
> +		data->temp_critical = p_tsadc_data->temp_critical;
> +	} else {
> +		data->temp_critical = temp;
> +	}
> +
> +	if (of_property_read_u32(pdev->dev.of_node, "force-shut-temp", &temp)) {
> +		dev_warn(&pdev->dev,
> +			 "Missing default force shut down temp property in the DT.\n");
> +		data->temp_force_shut = p_tsadc_data->temp_force_shut;
> +	} else {
> +		data->temp_force_shut = temp;
> +	}

use the generic trip-points, as explained in the binding-patch.


> +
> +	cpumask_set_cpu(0, &clip_cpus);
> +	data->cdev = cpufreq_cooling_register(&clip_cpus);

of_cpufreq_cooling_register(pdev->dev.of_node, &clip_cpus);


> +	if (IS_ERR(data->cdev)) {
> +		ret = PTR_ERR(data->cdev);
> +		dev_err(&pdev->dev,
> +			"failed to register cpufreq cooling device: %d\n", ret);
> +		return ret;
> +	}
> +
> +	data->tz = thermal_zone_device_register("rockchip_thermal",
> +						ROCKCHIP_TRIP_NUM,
> +						0, data,
> +						&rockchip_tz_ops, NULL,
> +						p_tsadc_data->passive_delay,
> +						p_tsadc_data->polling_delay);
> +
> +	if (IS_ERR(data->tz)) {
> +		ret = PTR_ERR(data->tz);
> +		dev_err(&pdev->dev,
> +			"failed to register thermal zone device %d\n", ret);
> +		cpufreq_cooling_unregister(data->cdev);
> +		return ret;
> +	}
> +
> +	if (p_tsadc_data->irq_en) {
> +		data->irq = platform_get_irq(pdev, 0);
> +		if (data->irq < 0)
> +			return data->irq;
> +
> +		ret = devm_request_threaded_irq(&pdev->dev, data->irq,
> +						rockchip_thermal_alarm_irq,
> +					rockchip_thermal_alarm_irq_thread,
> +						0, "rockchip_thermal", data);
> +		if (ret < 0) {
> +			dev_err(&pdev->dev,
> +				"failed to request tsadc irq: %d\n", ret);
> +			return ret;
> +		}
> +	}
> +
> +	rockchip_thermal_initialize(data);
> +	rockchip_thermal_control(data, true);
> +	return 0;
> +}
> +
> +static int rockchip_thermal_remove(struct platform_device *pdev)
> +{
> +	struct rockchip_thermal_data *data = platform_get_drvdata(pdev);
> +
> +	rockchip_thermal_control(data, false);
> +
> +	thermal_zone_device_unregister(data->tz);
> +
> +	if (!IS_ERR(data->tsadc_clk))
> +		clk_disable_unprepare(data->tsadc_clk);
> +
> +	if (!IS_ERR(data->tsadc_pclk))
> +		clk_disable_unprepare(data->tsadc_pclk);
> +
> +	cpufreq_cooling_unregister(data->cdev);
> +	return 0;
> +}
> +
> +#ifdef CONFIG_PM_SLEEP
> +static int rockchip_thermal_suspend(struct device *dev)
> +{
> +	struct platform_device *pdev = to_platform_device(dev);
> +	struct rockchip_thermal_data *data = platform_get_drvdata(pdev);
> +
> +	rockchip_thermal_control(data, false);
> +	return 0;
> +}
> +
> +static int rockchip_thermal_resume(struct device *dev)
> +{
> +	struct platform_device *pdev = to_platform_device(dev);
> +	struct rockchip_thermal_data *data = platform_get_drvdata(pdev);
> +
> +	rockchip_thermal_initialize(data);
> +	rockchip_thermal_control(data, true);
> +
> +	return 0;
> +}
> +
> +static SIMPLE_DEV_PM_OPS(rockchip_thermal_pm_ops,
> +			 rockchip_thermal_suspend, rockchip_thermal_resume);
> +
> +#define ROCKCHIP_TMU_PM	(&rockchip_thermal_pm_ops)
> +#else
> +#define ROCKCHIP_TMU_PM	NULL
> +#endif

simply do your

static SIMPLE_DEV_PM_OPS(rockchip_thermal_pm_ops,
			 rockchip_thermal_suspend, rockchip_thermal_resume);

outside the CONFIG_PM_SLEEP ifdef, as SIMPLE_DEV_PM_OPS already contains
a stub for !CONFIG_PM_SLEEP so you can remove your ROCKCHIP_TMU_PM as the 
rockchip_thermal_pm_ops will always be defined to something.


> +
> +static struct platform_driver rockchip_thermal_driver = {
> +	.driver = {
> +		   .name = "rockchip-thermal",
> +		   .owner = THIS_MODULE,
> +		   .pm = ROCKCHIP_TMU_PM,
> +		   .of_match_table = of_rockchip_thermal_match,
> +		   },
> +	.probe = rockchip_thermal_probe,
> +	.remove = rockchip_thermal_remove,
> +};
> +
> +module_platform_driver(rockchip_thermal_driver);
> +
> +MODULE_DESCRIPTION("ROCKCHIP THERMAL Driver");
> +MODULE_AUTHOR("Rockchip, Inc.");
> +MODULE_LICENSE("GPL");
> +MODULE_ALIAS("platform:rockchip-thermal");

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists