| Message ID | 1408752934-18318-3-git-send-email-caesar.wang@rock-chips.com (mailing list archive) |
|---|---|
| State | Superseded, archived |
| Delegated to: | Zhang Rui |
| Headers | show |
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@rock-chips.com> > Signed-off-by: Caesar Wang <caesar.wang@rock-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-pm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Heiko, ? 2014?08?24? 07:33, Heiko Stübner ??: > 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@rock-chips.com> >> Signed-off-by: Caesar Wang <caesar.wang@rock-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 >> + * c > no need for a duplicate Author mark > > Author: Rockchip, Inc. OK, I will remove it. > >> + * >> + * 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. > OK, I will fix it in patch_v2. >> + >> +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 > yes,I will fix it. >> + }, >> + { /* 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 > ok >> + 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. > I will fix it as the follow: #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; } #endif static SIMPLE_DEV_PM_OPS(rockchip_thermal_pm_ops, rockchip_thermal_suspend, rockchip_thermal_resume); static struct platform_driver rockchip_thermal_driver = { .driver = { .name = "rockchip-thermal", .owner = THIS_MODULE, .pm = &rockchip_thermal_pm_ops, ... }, } >> + >> +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"); > > > Thanks for Heiko's comment. -Caesar
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. + * + * 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 + +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, + }, + { /* 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; + } + 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; + } + + cpumask_set_cpu(0, &clip_cpus); + data->cdev = cpufreq_cooling_register(&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 + +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");