On 27 October 2011 04:08, Kyungmin Park <kmp...@infradead.org> wrote:
> Hi,
>
> exynos4 tmu is already merged 3.2-rc
> you can find it at below message and latest git kernel
> http://www.spinics.net/lists/lm-sensors/msg33872.html
>
> Thank you,
> Kyungmin Park
ok I will rebase my work on top of sensor
Thanks for pointing this out.
>
> On Wed, Oct 26, 2011 at 8:36 PM, Amit Daniel Kachhap
> <amit.kach...@linaro.org> wrote:
>> This patch adds support for thermal sensor driver. It supports 3 trigger
>> level. The first 2 level are warn and monitor temperature level. The
>> third critical trigger level resets the system. The threshold
>> change information is sent to the thermal interface layer.
>>
>> Signed-off-by: SangWook Ju <sw...@samsung.com>
>> Signed-off-by: Amit Daniel Kachhap <amit.kach...@linaro.org>
>> ---
>> arch/arm/mach-exynos4/include/mach/exynos4-tmu.h | 75 ++++
>> drivers/staging/Kconfig | 2 +
>> drivers/staging/Makefile | 1 +
>> drivers/staging/thermal_exynos4/sensor/Kconfig | 14 +
>> drivers/staging/thermal_exynos4/sensor/Makefile | 4 +
>> .../thermal_exynos4/sensor/exynos4210_tmu.c | 465
>> ++++++++++++++++++++
>> 6 files changed, 561 insertions(+), 0 deletions(-)
>> create mode 100644 arch/arm/mach-exynos4/include/mach/exynos4-tmu.h
>> create mode 100644 drivers/staging/thermal_exynos4/sensor/Kconfig
>> create mode 100644 drivers/staging/thermal_exynos4/sensor/Makefile
>> create mode 100644 drivers/staging/thermal_exynos4/sensor/exynos4210_tmu.c
>>
>> diff --git a/arch/arm/mach-exynos4/include/mach/exynos4-tmu.h
>> b/arch/arm/mach-exynos4/include/mach/exynos4-tmu.h
>> new file mode 100644
>> index 0000000..dc7bf37
>> --- /dev/null
>> +++ b/arch/arm/mach-exynos4/include/mach/exynos4-tmu.h
>> @@ -0,0 +1,75 @@
>> +/**
>> + * exynos4-tmu.h - definitions of exynos4 specific thermal interface
>> + *
>> + * Copyright (C) 2011 Samsung Electronics Co. ltd.
>> +
>> + * This program is free software; you can redistribute it and/or modify
>> + * it under the terms of the GNU General Public License as published by
>> + * the Free Software Foundation; either version 2 of the License, or
>> + * (at your option) any later version.
>> +
>> + * 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.
>> +
>> + * You should have received a copy of the GNU General Public License
>> + * along with this program; if not, write to the Free Software
>> + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
>> + */
>> +
>> +#ifndef _EXYNOS4_TMU_H
>> +#define _EXYNOS4_TMU_H
>> +
>> +/**
>> + * tmu_data - tmu driver private structure
>> + * @t1: colling stop temperature.
>> + * @dc_temp: Temperature base.
>> + * @init_threshold: Initial threshold temperature.
>> + * @mode: Compensation mode.
>> + * @comp_threshold: compensated threshold temperature.
>> + *
>> + */
>> +struct tmu_data {
>> + char te1;
>> + char te2;
>> + unsigned int init_threshold;
>> + int mode;
>> + int cooling;
>> + unsigned int comp_threshold;
>> + int tmu_flag;
>> +};
>> +
>> +/**
>> + * tmu_platform_device - tmu platform specific structure
>> + * @id: Device id.
>> + * @tmu_base: Memory register base.
>> + * @dev: TMU device.
>> + * @data: TMU driver private data structure.
>> + *
>> + */
>> +struct tmu_platform_device {
>> + int id;
>> + struct platform_device *pdev;
>> + void __iomem *tmu_base;
>> + struct device *dev;
>> + struct tmu_data data;
>> + struct thermal_dev *therm_fw;
>> +};
>> +
>> +#ifdef CONFIG_PM
>> +struct exynos4_tmu_register {
>> + unsigned int regval_thresh_temp;
>> + unsigned int regval_trig_lev0;
>> + unsigned int regval_trig_lev1;
>> + unsigned int regval_trig_lev2;
>> + unsigned int regval_trig_lev3;
>> + unsigned int regval_tmu_con0;
>> + unsigned int regval_int_en;
>> +};
>> +#endif
>> +
>> +extern void exynos4_tmu_set_platdata(struct tmu_data *pd);
>> +extern struct tmu_platform_device *exynos4_tmu_get_platdata(void);
>> +extern int exynos4_tmu_get_irqno(int num);
>> +#endif /* _EXYNOS4_TMU_H */
>> diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
>> index 2582e18..4376fed 100644
>> --- a/drivers/staging/Kconfig
>> +++ b/drivers/staging/Kconfig
>> @@ -148,4 +148,6 @@ source "drivers/staging/mei/Kconfig"
>>
>> source "drivers/staging/nvec/Kconfig"
>>
>> +source "drivers/staging/thermal_exynos4/Kconfig"
>> +
>> endif # STAGING
>> diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
>> index 50d112f..24a2943 100644
>> --- a/drivers/staging/Makefile
>> +++ b/drivers/staging/Makefile
>> @@ -65,3 +65,4 @@ obj-$(CONFIG_TOUCHSCREEN_SYNAPTICS_I2C_RMI4) += ste_rmi4/
>> obj-$(CONFIG_DRM_PSB) += gma500/
>> obj-$(CONFIG_INTEL_MEI) += mei/
>> obj-$(CONFIG_MFD_NVEC) += nvec/
>> +obj-$(CONFIG_SAMSUNG_THERMAL_INTERFACE) += thermal_exynos4/
>> diff --git a/drivers/staging/thermal_exynos4/sensor/Kconfig
>> b/drivers/staging/thermal_exynos4/sensor/Kconfig
>> new file mode 100644
>> index 0000000..dcdd04b
>> --- /dev/null
>> +++ b/drivers/staging/thermal_exynos4/sensor/Kconfig
>> @@ -0,0 +1,14 @@
>> +#
>> +# Thermal Temp sensor configuration
>> +#
>> +
>> +config SENSORS_EXYNOS4_TMU
>> + tristate "Samsung thermal sensor for exynos platform"
>> + depends on ARCH_EXYNOS4
>> + default n
>> + help
>> + Say Y here if you want to enable thermal sensor for samsung
>> + exynos platform.
>> +
>> + This driver can also be built as a module. If so, the module
>> + will be called exynos4210-tmu.
>> diff --git a/drivers/staging/thermal_exynos4/sensor/Makefile
>> b/drivers/staging/thermal_exynos4/sensor/Makefile
>> new file mode 100644
>> index 0000000..4cdb818
>> --- /dev/null
>> +++ b/drivers/staging/thermal_exynos4/sensor/Makefile
>> @@ -0,0 +1,4 @@
>> +#
>> +# Makefile for sensor chip drivers.
>> +#
>> +obj-$(CONFIG_SENSORS_EXYNOS4_TMU)+= exynos4210_tmu.o
>> diff --git a/drivers/staging/thermal_exynos4/sensor/exynos4210_tmu.c
>> b/drivers/staging/thermal_exynos4/sensor/exynos4210_tmu.c
>> new file mode 100644
>> index 0000000..b125379
>> --- /dev/null
>> +++ b/drivers/staging/thermal_exynos4/sensor/exynos4210_tmu.c
>> @@ -0,0 +1,465 @@
>> +/**
>> + * exynos4210_tmu.c - exynos4 thermal sensor driver
>> + *
>> + * Copyright (C) 2011 Samsung Electronics Co. ltd.
>> + * Author: SangWook Ju <sw...@samsung.com>
>> + * Author: Amit Daniel Kachhap <amit.kach...@linaro.org>
>> +
>> + * This program is free software; you can redistribute it and/or modify
>> + * it under the terms of the GNU General Public License as published by
>> + * the Free Software Foundation; either version 2 of the License, or
>> + * (at your option) any later version.
>> +
>> + * 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.
>> +
>> + * You should have received a copy of the GNU General Public License
>> + * along with this program; if not, write to the Free Software
>> + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
>> + */
>> +
>> +#include <linux/module.h>
>> +#include <linux/fs.h>
>> +#include <linux/string.h>
>> +#include <linux/types.h>
>> +#include <linux/kernel.h>
>> +#include <linux/init.h>
>> +#include <linux/delay.h>
>> +#include <linux/platform_device.h>
>> +#include <linux/interrupt.h>
>> +#include <linux/err.h>
>> +#include <linux/io.h>
>> +#include <linux/irq.h>
>> +#include <linux/sysfs.h>
>> +#include <linux/slab.h>
>> +#include <asm/irq.h>
>> +#include <mach/regs-tmu.h>
>> +#include <mach/exynos4-tmu.h>
>> +#include <mach/thermal_interface.h>
>> +
>> +#define INIT_THRESHOLD 80
>> +/*Monitor temp = INIT_THRESHOLD + TRIGGER_LEV0 = 85*/
>> +#define TRIGGER_LEV0 5
>> +/*Warning temp = INIT_THRESHOLD + TRIGGER_LEV1 = 100*/
>> +#define TRIGGER_LEV1 20
>> +/*Panic temp = INIT_THRESHOLD + TRIGGER_LEV2 = 110*/
>> +#define TRIGGER_LEV2 30
>> +#define TRIGGER_LEV3 0xFF
>> +
>> +#define EFUSE_MIN_VALUE 60
>> +#define EFUSE_AVG_VALUE 80
>> +#define EFUSE_MAX_VALUE 100
>> +
>> +#define VREF_SLOPE 0x07000F02
>> +#define TMU_EN 0x1
>> +#define TMU_DC_VALUE 25
>> +
>> +enum tmu_status_t {
>> + TMU_STATUS_NORMAL = 0,
>> + TMU_STATUS_MONITOR,
>> + TMU_STATUS_WARNING,
>> + TMU_STATUS_PANIC,
>> +};
>> +
>> +static struct resource *exynos4_tmu_mem;
>> +static struct workqueue_struct *tmu_wq;
>> +static struct delayed_work tmu_work;
>> +
>> +#ifdef CONFIG_PM
>> +static struct exynos4_tmu_register tmu_register_save;
>> +#endif
>> +
>> +static int irq_tmu = NO_IRQ;
>> +static struct tmu_platform_device *tmu_dev_t;
>> +
>> +/**
>> + * exynos4_tmu_readb - read a byte value from the given register.
>> + * @tmu_dev: The tmu device structure.
>> + * @reg: Register.
>> + *
>> + * Read a byte value from the given register.
>> + */
>> +static unsigned int exynos4_tmu_readb(struct tmu_platform_device *tmu_dev,
>> + unsigned int reg)
>> +{
>> + return __raw_readb(tmu_dev->tmu_base + reg);
>> +}
>> +
>> +/**
>> + * exynos4_tmu_writeb - write a byte value to the given register.
>> + * @tmu_dev: The tmu device structure.
>> + * @reg: Register.
>> + * @val: Value to write.
>> + *
>> + * write a byte value to the given register.
>> + */
>> +static void exynos4_tmu_writeb(struct tmu_platform_device *tmu_dev,
>> + unsigned int reg, unsigned int val)
>> +{
>> + __raw_writeb(val, tmu_dev->tmu_base + reg);
>> +}
>> +
>> +/**
>> + * exynos4_tmu_readl - Read a long value from the given register.
>> + * @tmu_dev: The tmu device structure.
>> + * @reg: Register.
>> + *
>> + * Read a long value from the given register.
>> + */
>> +static unsigned int exynos4_tmu_readl(struct tmu_platform_device *tmu_dev,
>> + unsigned int reg)
>> +{
>> + return __raw_readl(tmu_dev->tmu_base + reg);
>> +}
>> +
>> +/**
>> + * exynos4_tmu_writel - write a long value to the given register.
>> + * @tmu_dev: The tmu device structure.
>> + * @reg: Register.
>> + * @val: Value to write.
>> + *
>> + * write a long value to the given register.
>> + */
>> +static void exynos4_tmu_writel(struct tmu_platform_device *tmu_dev,
>> + unsigned int reg, unsigned int val)
>> +{
>> + __raw_writel(val, tmu_dev->tmu_base + reg);
>> +}
>> +
>> +
>> +static int exynos4_tmu_current_temp(struct tmu_platform_device *tmu_dev)
>> +{
>> + int temp;
>> + temp = exynos4_tmu_readl(tmu_dev, CURRENT_TEMP)
>> + - tmu_dev->data.te1 + TMU_DC_VALUE;
>> + return temp;
>> +}
>> +
>> +/**
>> + * tmu_monitor - Timer handler for monitoring interrupt.
>> + * @work: temp work.
>> + *
>> + * Timer handler for monitor/warning/panic interrupts.
>> +*/
>> +
>> +static void tmu_monitor(struct work_struct *work)
>> +{
>> + exynos4_report_trigger();
>> + enable_irq(irq_tmu);
>> +}
>> +
>> +int exynos4_tmu_read_temp(int *temp)
>> +{
>> + *temp = 0;
>> + if (tmu_dev_t)
>> + *temp = exynos4_tmu_readl(tmu_dev_t, CURRENT_TEMP)
>> + - tmu_dev_t->data.te1 + TMU_DC_VALUE;
>> + if (*temp > 0)
>> + return 0;
>> + else
>> + return -EINVAL;
>> +}
>> +
>> +/*
>> + * exynos4_tmu_initialize - Initializes the TMU driver.
>> + * @pdev: The platform device structure.
>> + *
>> + * Initialises the different registers of the temperature sensor.
>> + */
>> +static int exynos4_tmu_initialize(struct platform_device *pdev)
>> +{
>> + struct tmu_platform_device *tmu_dev = platform_get_drvdata(pdev);
>> + unsigned int en;
>> + unsigned int te_temp;
>> + unsigned int t_new;
>> +
>> + en = (exynos4_tmu_readb(tmu_dev, TMU_STATUS) & 0x1);
>> + if (!en) {
>> + dev_err(&pdev->dev, "failed to start tmu drvier\n");
>> + return -ENOENT;
>> + }
>> +
>> + /* Temperature compensation */
>> + te_temp = exynos4_tmu_readl(tmu_dev, TRIMINFO);
>> + tmu_dev->data.te1 = te_temp & TRIM_TEMP_MASK;
>> + tmu_dev->data.te2 = ((te_temp >> 8) & TRIM_TEMP_MASK);
>> +
>> + if ((EFUSE_MIN_VALUE > tmu_dev->data.te1) ||
>> + (tmu_dev->data.te1 > EFUSE_MAX_VALUE) ||
>> + (tmu_dev->data.te2 != 0))
>> + tmu_dev->data.te1 = EFUSE_AVG_VALUE;
>> +
>> + t_new = INIT_THRESHOLD + tmu_dev->data.te1 - TMU_DC_VALUE;
>> +
>> + exynos4_tmu_writel(tmu_dev, THRESHOLD_TEMP, t_new);
>> +
>> + /* Need to initialize regsiter setting after getting parameter info
>> */
>> + /* [28:23] vref [11:8] slope - Tunning parameter */
>> + exynos4_tmu_writel(tmu_dev, TMU_CON0, VREF_SLOPE);
>> + exynos4_tmu_writeb(tmu_dev, TRG_LEV0, TRIGGER_LEV0);
>> + exynos4_tmu_writeb(tmu_dev, TRG_LEV1, TRIGGER_LEV1);
>> + exynos4_tmu_writeb(tmu_dev, TRG_LEV2, TRIGGER_LEV2);
>> + exynos4_tmu_writeb(tmu_dev, TRG_LEV3, TRIGGER_LEV3);
>> + pr_info("TMU is initialized !!\n");
>> + pr_info("Threshold temp: %dc Monitor temp: %dc\n",
>> + INIT_THRESHOLD,
>> + INIT_THRESHOLD + exynos4_tmu_readb(tmu_dev,
>> TRG_LEV0));
>> + pr_info("Warning temp: %dc Panic temp: %dc\n",
>> + INIT_THRESHOLD + exynos4_tmu_readb(tmu_dev,
>> TRG_LEV1),
>> + INIT_THRESHOLD + exynos4_tmu_readb(tmu_dev,
>> TRG_LEV2));
>> + pr_info("Cooling temp: %dc\n",
>> + tmu_dev->data.cooling);
>> +}
>> +
>> +/**
>> + * exynos4_tmu_start - Triggers the TMU driver.
>> + * @pdev: The platform device structure.
>> + *
>> + * Triggers the temperature sensor.
>> + */
>> +static void exynos4_tmu_start(struct platform_device *pdev)
>> +{
>> + struct tmu_platform_device *tmu_dev = platform_get_drvdata(pdev);
>> + unsigned int con, cur_temp;
>> + exynos4_tmu_writel(tmu_dev, INTCLEAR,
>> + INTCLEAR0|INTCLEAR1|INTCLEAR2|INTCLEAR3);
>> +
>> + /* TMU core enable */
>> + con = exynos4_tmu_readl(tmu_dev, TMU_CON0);
>> + con |= TMU_EN;
>> + exynos4_tmu_writel(tmu_dev, TMU_CON0, con);
>> +
>> + /*LEV0 LEV1 LEV2 interrupt enable */
>> + exynos4_tmu_writel(tmu_dev, INTEN, (INTEN0|INTEN1|INTEN2));
>> + usleep_range(200, 1000);
>> + cur_temp = exynos4_tmu_current_temp(tmu_dev);
>> + pr_info("Current Temperature : %dc\n\n", cur_temp);
>> +}
>> +/**
>> + * exynos4_tmu_irq - IRQ handler for tmu interrupt.
>> + * @irq: IRQ line.
>> + * @id: void data pointer for the tmu device.
>> + *
>> + * IRQ handler for interrupt.
>> +*/
>> +static irqreturn_t exynos4_tmu_irq(int irq, void *id)
>> +{
>> + struct tmu_platform_device *tmu_dev = (struct tmu_platform_device
>> *)id;
>> + unsigned int status;
>> +
>> + disable_irq_nosync(irq);
>> +
>> + status = __raw_readl(tmu_dev->tmu_base + INTSTAT);
>> +
>> + if (status & INTSTAT0) {
>> + pr_info("Monitor interrupt occured!!!!\n");
>> + __raw_writel(INTCLEAR0, tmu_dev->tmu_base + INTCLEAR);
>> + tmu_dev->data.tmu_flag = TMU_STATUS_MONITOR;
>> + queue_delayed_work_on(0, tmu_wq, &tmu_work,
>> + usecs_to_jiffies(10 *
>> 1000));
>> + } else if (status & INTSTAT1) {
>> + pr_info("Warning interrupt occured!!!!\n");
>> + __raw_writel(INTCLEAR1, tmu_dev->tmu_base + INTCLEAR);
>> + tmu_dev->data.tmu_flag = TMU_STATUS_WARNING;
>> + queue_delayed_work_on(0, tmu_wq, &tmu_work,
>> + usecs_to_jiffies(10 *
>> 1000));
>> + } else if (status & INTSTAT2) {
>> + pr_info("Panic interrupt occured!!!!\n");
>> + __raw_writel(INTCLEAR2, tmu_dev->tmu_base + INTCLEAR);
>> + tmu_dev->data.tmu_flag = TMU_STATUS_PANIC;
>> + queue_delayed_work_on(0, tmu_wq, &tmu_work,
>> + usecs_to_jiffies(10 *
>> 1000));
>> + } else {
>> + pr_err("%s: TMU interrupt error\n", __func__);
>> + return -ENODEV;
>> + }
>> +
>> + return IRQ_HANDLED;
>> +}
>> +
>> +/**
>> + * exynos4_tmu_probe - device probe entry.
>> + * @pdev: The device being probed.
>> + */
>> +static int __devinit exynos4_tmu_probe(struct platform_device *pdev)
>> +{
>> + struct tmu_platform_device *tmu_dev = platform_get_drvdata(pdev);
>> + struct resource *res;
>> + int ret;
>> +
>> + pr_debug("%s: probe=%p\n", __func__, pdev);
>> + irq_tmu = platform_get_irq(pdev, 0);
>> + if (irq_tmu < 0) {
>> + dev_err(&pdev->dev, "no irq for thermal monitor\n");
>> + return -ENOENT;
>> + }
>> +
>> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>> + if (res == NULL) {
>> + dev_err(&pdev->dev, "failed to get memory region
>> resource\n");
>> + return -ENOENT;
>> + }
>> +
>> + exynos4_tmu_mem = request_mem_region(res->start,
>> + res->end-res->start+1,
>> + pdev->name);
>> + if (exynos4_tmu_mem == NULL) {
>> + dev_err(&pdev->dev, "failed to reserve memory region\n");
>> + ret = -ENOENT;
>> + goto err_nores;
>> + }
>> +
>> + tmu_dev->tmu_base = ioremap(res->start, (res->end - res->start) + 1);
>> + if (tmu_dev->tmu_base == NULL) {
>> + dev_err(&pdev->dev, "failed ioremap()\n");
>> + ret = -EINVAL;
>> + goto err_nomap;
>> + }
>> + tmu_dev->pdev = pdev;
>> + tmu_dev->dev = &pdev->dev;
>> +
>> + ret = request_irq(irq_tmu, exynos4_tmu_irq,
>> + IRQF_DISABLED, "exynos4-tmu ", tmu_dev);
>> + if (ret) {
>> + dev_err(&pdev->dev, "IRQ%d error %d\n", irq_tmu, ret);
>> + goto err_irq;
>> + }
>> +
>> + tmu_dev_t = tmu_dev;
>> +
>> + exynos4_tmu_initialize(pdev);
>> + if (ret)
>> + goto err_nores;
>> +
>> + exynos4_tmu_start(pdev);
>> +
>> + exynos4_read_sensor = exynos4_tmu_read_temp;
>> +
>> + return 0;
>> +err_irq:
>> + iounmap(tmu_dev->tmu_base);
>> +err_nomap:
>> + release_resource(exynos4_tmu_mem);
>> +err_nores:
>> + return ret;
>> +}
>> +
>> +/**
>> + * exynos4_tmu_remove - device remove entry.
>> + * @pdev: The device being removed.
>> + */
>> +static int __devinit exynos4_tmu_remove(struct platform_device *pdev)
>> +{
>> + struct tmu_platform_device *tmu_dev = platform_get_drvdata(pdev);
>> + free_irq(irq_tmu, tmu_dev);
>> + iounmap(tmu_dev->tmu_base);
>> + release_resource(exynos4_tmu_mem);
>> + return 0;
>> +}
>> +
>> +#ifdef CONFIG_PM
>> +/**
>> + * exynos4_tmu_suspend - device suspend function.
>> + * @pdev: The device being suspended.
>> + * @state: suspend event message.
>> + */
>> +static int exynos4_tmu_suspend(struct platform_device *pdev, pm_message_t
>> state)
>> +{
>> + struct tmu_platform_device *tmu_dev = platform_get_drvdata(pdev);
>> +
>> + tmu_register_save.regval_thresh_temp =
>> + exynos4_tmu_readb(tmu_dev, THRESHOLD_TEMP);
>> + tmu_register_save.regval_trig_lev0 =
>> + exynos4_tmu_readb(tmu_dev, TRG_LEV0);
>> + tmu_register_save.regval_trig_lev1 =
>> + exynos4_tmu_readb(tmu_dev, TRG_LEV1);
>> + tmu_register_save.regval_trig_lev2 =
>> + exynos4_tmu_readb(tmu_dev, TRG_LEV2);
>> + tmu_register_save.regval_trig_lev3 =
>> + exynos4_tmu_readb(tmu_dev, TRG_LEV3);
>> + tmu_register_save.regval_tmu_con0 =
>> + exynos4_tmu_readl(tmu_dev, TMU_CON0);
>> + tmu_register_save.regval_int_en =
>> + exynos4_tmu_readl(tmu_dev, INTEN);
>> + return 0;
>> +}
>> +
>> +/**
>> + * exynos4_tmu_resume - device resume function.
>> + * @pdev: The device being suspended.
>> + */
>> +static int exynos4_tmu_resume(struct platform_device *pdev)
>> +{
>> + struct tmu_platform_device *tmu_dev = platform_get_drvdata(pdev);
>> +
>> + exynos4_tmu_writeb(tmu_dev, THRESHOLD_TEMP,
>> + tmu_register_save.regval_thresh_temp);
>> + exynos4_tmu_writeb(tmu_dev, TRG_LEV0,
>> + tmu_register_save.regval_trig_lev0);
>> + exynos4_tmu_writeb(tmu_dev, TRG_LEV1,
>> + tmu_register_save.regval_trig_lev1);
>> + exynos4_tmu_writeb(tmu_dev, TRG_LEV2,
>> + tmu_register_save.regval_trig_lev2);
>> + exynos4_tmu_writeb(tmu_dev, TRG_LEV3,
>> + tmu_register_save.regval_trig_lev3);
>> + exynos4_tmu_writeb(tmu_dev, TMU_CON0,
>> + tmu_register_save.regval_tmu_con0);
>> + exynos4_tmu_writel(tmu_dev, INTEN,
>> + tmu_register_save.regval_int_en);
>> + exynos4_tmu_writel(tmu_dev, INTCLEAR,
>> + INTCLEAR0|INTCLEAR1|INTCLEAR2|INTCLEAR3);
>> + return 0;
>> +}
>> +
>> +#else
>> +#define exynos4_tmu_suspend NULL
>> +#define exynos4_tmu_resume NULL
>> +#endif
>> +
>> +static struct platform_driver exynos4_tmu_driver = {
>> + .probe = exynos4_tmu_probe,
>> + .remove = exynos4_tmu_remove,
>> + .suspend = exynos4_tmu_suspend,
>> + .resume = exynos4_tmu_resume,
>> + .driver = {
>> + .name = "exynos4-tmu",
>> + .owner = THIS_MODULE,
>> + },
>> +};
>> +
>> +static int __init exynos4_tmu_driver_init(void)
>> +{
>> + int ret = 0;
>> + pr_info("EXYNOS4 TMU driver is loaded.\n");
>> + tmu_wq = create_workqueue("tmu");
>> + if (!tmu_wq) {
>> + pr_err(" creation of tmu failed\n");
>> + ret = -EFAULT;
>> + goto out;
>> + }
>> + INIT_DELAYED_WORK_DEFERRABLE(&tmu_work, tmu_monitor);
>> + ret = platform_driver_register(&exynos4_tmu_driver);
>> + if (ret) {
>> + pr_err("registeration of tmu_driver failed\n");
>> + destroy_workqueue(tmu_wq);
>> + goto out;
>> + }
>> +out:
>> + return ret;
>> +}
>> +
>> +static void __exit exynos4_tmu_driver_exit(void)
>> +{
>> + destroy_workqueue(tmu_wq);
>> + platform_driver_unregister(&exynos4_tmu_driver);
>> +}
>> +
>> +module_init(exynos4_tmu_driver_init);
>> +module_exit(exynos4_tmu_driver_exit);
>> +
>> +MODULE_AUTHOR("Samsung Electronics");
>> +MODULE_DESCRIPTION("EXYNOS4 temperature sensor driver");
>> +MODULE_LICENSE("GPL");
>> +MODULE_ALIAS("platform:exynos4-tmu");
>> --
>> 1.7.1
>>
>>
>> _______________________________________________
>> linaro-dev mailing list
>> linaro-dev@lists.linaro.org
>> http://lists.linaro.org/mailman/listinfo/linaro-dev
>>
>
_______________________________________________
linaro-dev mailing list
linaro-dev@lists.linaro.org
http://lists.linaro.org/mailman/listinfo/linaro-dev
