From 6892cf07e7337776c0b006db3b96a96bf071acb7 Mon Sep 17 00:00:00 2001 From: Rafał Miłecki Date: Mon, 17 Apr 2017 23:04:16 +0200 Subject: thermal: bcm2835: move to the broadcom subdirectory MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We already have 2 Broadcom drivers and at least 1 more is coming. This made us create broadcom subdirectory where bcm2835 should be moves now. Acked-by: Florian Fainelli Signed-off-by: Rafał Miłecki Signed-off-by: Eduardo Valentin --- drivers/thermal/Kconfig | 8 - drivers/thermal/Makefile | 1 - drivers/thermal/bcm2835_thermal.c | 314 ----------------------------- drivers/thermal/broadcom/Kconfig | 8 + drivers/thermal/broadcom/Makefile | 1 + drivers/thermal/broadcom/bcm2835_thermal.c | 314 +++++++++++++++++++++++++++++ 6 files changed, 323 insertions(+), 323 deletions(-) delete mode 100644 drivers/thermal/bcm2835_thermal.c create mode 100644 drivers/thermal/broadcom/bcm2835_thermal.c diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig index 6699843918fa..f786ae433032 100644 --- a/drivers/thermal/Kconfig +++ b/drivers/thermal/Kconfig @@ -468,12 +468,4 @@ config ZX2967_THERMAL the primitive temperature sensor embedded in zx2967 SoCs. This sensor generates the real time die temperature. -config BCM2835_THERMAL - tristate "Thermal sensors on bcm2835 SoC" - depends on ARCH_BCM2835 || COMPILE_TEST - depends on HAS_IOMEM - depends on THERMAL_OF - help - Support for thermal sensors on Broadcom bcm2835 SoCs. - endif diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile index a1e9b8b4e897..e6834061da28 100644 --- a/drivers/thermal/Makefile +++ b/drivers/thermal/Makefile @@ -60,4 +60,3 @@ obj-$(CONFIG_HISI_THERMAL) += hisi_thermal.o obj-$(CONFIG_MTK_THERMAL) += mtk_thermal.o obj-$(CONFIG_GENERIC_ADC_THERMAL) += thermal-generic-adc.o obj-$(CONFIG_ZX2967_THERMAL) += zx2967_thermal.o -obj-$(CONFIG_BCM2835_THERMAL) += bcm2835_thermal.o diff --git a/drivers/thermal/bcm2835_thermal.c b/drivers/thermal/bcm2835_thermal.c deleted file mode 100644 index 0ecf80890c84..000000000000 --- a/drivers/thermal/bcm2835_thermal.c +++ /dev/null @@ -1,314 +0,0 @@ -/* - * Driver for Broadcom BCM2835 SoC temperature sensor - * - * Copyright (C) 2016 Martin Sperl - * - * 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. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#define BCM2835_TS_TSENSCTL 0x00 -#define BCM2835_TS_TSENSSTAT 0x04 - -#define BCM2835_TS_TSENSCTL_PRWDW BIT(0) -#define BCM2835_TS_TSENSCTL_RSTB BIT(1) - -/* - * bandgap reference voltage in 6 mV increments - * 000b = 1178 mV, 001b = 1184 mV, ... 111b = 1220 mV - */ -#define BCM2835_TS_TSENSCTL_CTRL_BITS 3 -#define BCM2835_TS_TSENSCTL_CTRL_SHIFT 2 -#define BCM2835_TS_TSENSCTL_CTRL_MASK \ - GENMASK(BCM2835_TS_TSENSCTL_CTRL_BITS + \ - BCM2835_TS_TSENSCTL_CTRL_SHIFT - 1, \ - BCM2835_TS_TSENSCTL_CTRL_SHIFT) -#define BCM2835_TS_TSENSCTL_CTRL_DEFAULT 1 -#define BCM2835_TS_TSENSCTL_EN_INT BIT(5) -#define BCM2835_TS_TSENSCTL_DIRECT BIT(6) -#define BCM2835_TS_TSENSCTL_CLR_INT BIT(7) -#define BCM2835_TS_TSENSCTL_THOLD_SHIFT 8 -#define BCM2835_TS_TSENSCTL_THOLD_BITS 10 -#define BCM2835_TS_TSENSCTL_THOLD_MASK \ - GENMASK(BCM2835_TS_TSENSCTL_THOLD_BITS + \ - BCM2835_TS_TSENSCTL_THOLD_SHIFT - 1, \ - BCM2835_TS_TSENSCTL_THOLD_SHIFT) -/* - * time how long the block to be asserted in reset - * which based on a clock counter (TSENS clock assumed) - */ -#define BCM2835_TS_TSENSCTL_RSTDELAY_SHIFT 18 -#define BCM2835_TS_TSENSCTL_RSTDELAY_BITS 8 -#define BCM2835_TS_TSENSCTL_REGULEN BIT(26) - -#define BCM2835_TS_TSENSSTAT_DATA_BITS 10 -#define BCM2835_TS_TSENSSTAT_DATA_SHIFT 0 -#define BCM2835_TS_TSENSSTAT_DATA_MASK \ - GENMASK(BCM2835_TS_TSENSSTAT_DATA_BITS + \ - BCM2835_TS_TSENSSTAT_DATA_SHIFT - 1, \ - BCM2835_TS_TSENSSTAT_DATA_SHIFT) -#define BCM2835_TS_TSENSSTAT_VALID BIT(10) -#define BCM2835_TS_TSENSSTAT_INTERRUPT BIT(11) - -struct bcm2835_thermal_data { - struct thermal_zone_device *tz; - void __iomem *regs; - struct clk *clk; - struct dentry *debugfsdir; -}; - -static int bcm2835_thermal_adc2temp(u32 adc, int offset, int slope) -{ - return offset + slope * adc; -} - -static int bcm2835_thermal_temp2adc(int temp, int offset, int slope) -{ - temp -= offset; - temp /= slope; - - if (temp < 0) - temp = 0; - if (temp >= BIT(BCM2835_TS_TSENSSTAT_DATA_BITS)) - temp = BIT(BCM2835_TS_TSENSSTAT_DATA_BITS) - 1; - - return temp; -} - -static int bcm2835_thermal_get_temp(void *d, int *temp) -{ - struct bcm2835_thermal_data *data = d; - u32 val = readl(data->regs + BCM2835_TS_TSENSSTAT); - - if (!(val & BCM2835_TS_TSENSSTAT_VALID)) - return -EIO; - - val &= BCM2835_TS_TSENSSTAT_DATA_MASK; - - *temp = bcm2835_thermal_adc2temp( - val, - thermal_zone_get_offset(data->tz), - thermal_zone_get_slope(data->tz)); - - return 0; -} - -static const struct debugfs_reg32 bcm2835_thermal_regs[] = { - { - .name = "ctl", - .offset = 0 - }, - { - .name = "stat", - .offset = 4 - } -}; - -static void bcm2835_thermal_debugfs(struct platform_device *pdev) -{ - struct thermal_zone_device *tz = platform_get_drvdata(pdev); - struct bcm2835_thermal_data *data = tz->devdata; - struct debugfs_regset32 *regset; - - data->debugfsdir = debugfs_create_dir("bcm2835_thermal", NULL); - if (!data->debugfsdir) - return; - - regset = devm_kzalloc(&pdev->dev, sizeof(*regset), GFP_KERNEL); - if (!regset) - return; - - regset->regs = bcm2835_thermal_regs; - regset->nregs = ARRAY_SIZE(bcm2835_thermal_regs); - regset->base = data->regs; - - debugfs_create_regset32("regset", 0444, data->debugfsdir, regset); -} - -static struct thermal_zone_of_device_ops bcm2835_thermal_ops = { - .get_temp = bcm2835_thermal_get_temp, -}; - -/* - * Note: as per Raspberry Foundation FAQ - * (https://www.raspberrypi.org/help/faqs/#performanceOperatingTemperature) - * the recommended temperature range for the SoC -40C to +85C - * so the trip limit is set to 80C. - * this applies to all the BCM283X SoC - */ - -static const struct of_device_id bcm2835_thermal_of_match_table[] = { - { - .compatible = "brcm,bcm2835-thermal", - }, - { - .compatible = "brcm,bcm2836-thermal", - }, - { - .compatible = "brcm,bcm2837-thermal", - }, - {}, -}; -MODULE_DEVICE_TABLE(of, bcm2835_thermal_of_match_table); - -static int bcm2835_thermal_probe(struct platform_device *pdev) -{ - const struct of_device_id *match; - struct thermal_zone_device *tz; - struct bcm2835_thermal_data *data; - struct resource *res; - int err = 0; - u32 val; - unsigned long rate; - - data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); - if (!data) - return -ENOMEM; - - match = of_match_device(bcm2835_thermal_of_match_table, - &pdev->dev); - if (!match) - return -EINVAL; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - data->regs = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(data->regs)) { - err = PTR_ERR(data->regs); - dev_err(&pdev->dev, "Could not get registers: %d\n", err); - return err; - } - - data->clk = devm_clk_get(&pdev->dev, NULL); - if (IS_ERR(data->clk)) { - err = PTR_ERR(data->clk); - if (err != -EPROBE_DEFER) - dev_err(&pdev->dev, "Could not get clk: %d\n", err); - return err; - } - - err = clk_prepare_enable(data->clk); - if (err) - return err; - - rate = clk_get_rate(data->clk); - if ((rate < 1920000) || (rate > 5000000)) - dev_warn(&pdev->dev, - "Clock %pCn running at %pCr Hz is outside of the recommended range: 1.92 to 5MHz\n", - data->clk, data->clk); - - /* register of thermal sensor and get info from DT */ - tz = thermal_zone_of_sensor_register(&pdev->dev, 0, data, - &bcm2835_thermal_ops); - if (IS_ERR(tz)) { - err = PTR_ERR(tz); - dev_err(&pdev->dev, - "Failed to register the thermal device: %d\n", - err); - goto err_clk; - } - - /* - * right now the FW does set up the HW-block, so we are not - * touching the configuration registers. - * But if the HW is not enabled, then set it up - * using "sane" values used by the firmware right now. - */ - val = readl(data->regs + BCM2835_TS_TSENSCTL); - if (!(val & BCM2835_TS_TSENSCTL_RSTB)) { - int trip_temp, offset, slope; - - slope = thermal_zone_get_slope(tz); - offset = thermal_zone_get_offset(tz); - /* - * For now we deal only with critical, otherwise - * would need to iterate - */ - err = tz->ops->get_trip_temp(tz, 0, &trip_temp); - if (err < 0) { - err = PTR_ERR(tz); - dev_err(&pdev->dev, - "Not able to read trip_temp: %d\n", - err); - goto err_tz; - } - - /* set bandgap reference voltage and enable voltage regulator */ - val = (BCM2835_TS_TSENSCTL_CTRL_DEFAULT << - BCM2835_TS_TSENSCTL_CTRL_SHIFT) | - BCM2835_TS_TSENSCTL_REGULEN; - - /* use the recommended reset duration */ - val |= (0xFE << BCM2835_TS_TSENSCTL_RSTDELAY_SHIFT); - - /* trip_adc value from info */ - val |= bcm2835_thermal_temp2adc(trip_temp, - offset, - slope) - << BCM2835_TS_TSENSCTL_THOLD_SHIFT; - - /* write the value back to the register as 2 steps */ - writel(val, data->regs + BCM2835_TS_TSENSCTL); - val |= BCM2835_TS_TSENSCTL_RSTB; - writel(val, data->regs + BCM2835_TS_TSENSCTL); - } - - data->tz = tz; - - platform_set_drvdata(pdev, tz); - - bcm2835_thermal_debugfs(pdev); - - return 0; -err_tz: - thermal_zone_of_sensor_unregister(&pdev->dev, tz); -err_clk: - clk_disable_unprepare(data->clk); - - return err; -} - -static int bcm2835_thermal_remove(struct platform_device *pdev) -{ - struct thermal_zone_device *tz = platform_get_drvdata(pdev); - struct bcm2835_thermal_data *data = tz->devdata; - - debugfs_remove_recursive(data->debugfsdir); - thermal_zone_of_sensor_unregister(&pdev->dev, tz); - clk_disable_unprepare(data->clk); - - return 0; -} - -static struct platform_driver bcm2835_thermal_driver = { - .probe = bcm2835_thermal_probe, - .remove = bcm2835_thermal_remove, - .driver = { - .name = "bcm2835_thermal", - .of_match_table = bcm2835_thermal_of_match_table, - }, -}; -module_platform_driver(bcm2835_thermal_driver); - -MODULE_AUTHOR("Martin Sperl"); -MODULE_DESCRIPTION("Thermal driver for bcm2835 chip"); -MODULE_LICENSE("GPL"); diff --git a/drivers/thermal/broadcom/Kconfig b/drivers/thermal/broadcom/Kconfig index f0dea8a8e002..ab08af4654ef 100644 --- a/drivers/thermal/broadcom/Kconfig +++ b/drivers/thermal/broadcom/Kconfig @@ -1,3 +1,11 @@ +config BCM2835_THERMAL + tristate "Thermal sensors on bcm2835 SoC" + depends on ARCH_BCM2835 || COMPILE_TEST + depends on HAS_IOMEM + depends on THERMAL_OF + help + Support for thermal sensors on Broadcom bcm2835 SoCs. + config BCM_NS_THERMAL tristate "Northstar thermal driver" depends on ARCH_BCM_IPROC || COMPILE_TEST diff --git a/drivers/thermal/broadcom/Makefile b/drivers/thermal/broadcom/Makefile index 059df9a0ed69..c6f62e4fd0ee 100644 --- a/drivers/thermal/broadcom/Makefile +++ b/drivers/thermal/broadcom/Makefile @@ -1 +1,2 @@ +obj-$(CONFIG_BCM2835_THERMAL) += bcm2835_thermal.o obj-$(CONFIG_BCM_NS_THERMAL) += ns-thermal.o diff --git a/drivers/thermal/broadcom/bcm2835_thermal.c b/drivers/thermal/broadcom/bcm2835_thermal.c new file mode 100644 index 000000000000..0ecf80890c84 --- /dev/null +++ b/drivers/thermal/broadcom/bcm2835_thermal.c @@ -0,0 +1,314 @@ +/* + * Driver for Broadcom BCM2835 SoC temperature sensor + * + * Copyright (C) 2016 Martin Sperl + * + * 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. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define BCM2835_TS_TSENSCTL 0x00 +#define BCM2835_TS_TSENSSTAT 0x04 + +#define BCM2835_TS_TSENSCTL_PRWDW BIT(0) +#define BCM2835_TS_TSENSCTL_RSTB BIT(1) + +/* + * bandgap reference voltage in 6 mV increments + * 000b = 1178 mV, 001b = 1184 mV, ... 111b = 1220 mV + */ +#define BCM2835_TS_TSENSCTL_CTRL_BITS 3 +#define BCM2835_TS_TSENSCTL_CTRL_SHIFT 2 +#define BCM2835_TS_TSENSCTL_CTRL_MASK \ + GENMASK(BCM2835_TS_TSENSCTL_CTRL_BITS + \ + BCM2835_TS_TSENSCTL_CTRL_SHIFT - 1, \ + BCM2835_TS_TSENSCTL_CTRL_SHIFT) +#define BCM2835_TS_TSENSCTL_CTRL_DEFAULT 1 +#define BCM2835_TS_TSENSCTL_EN_INT BIT(5) +#define BCM2835_TS_TSENSCTL_DIRECT BIT(6) +#define BCM2835_TS_TSENSCTL_CLR_INT BIT(7) +#define BCM2835_TS_TSENSCTL_THOLD_SHIFT 8 +#define BCM2835_TS_TSENSCTL_THOLD_BITS 10 +#define BCM2835_TS_TSENSCTL_THOLD_MASK \ + GENMASK(BCM2835_TS_TSENSCTL_THOLD_BITS + \ + BCM2835_TS_TSENSCTL_THOLD_SHIFT - 1, \ + BCM2835_TS_TSENSCTL_THOLD_SHIFT) +/* + * time how long the block to be asserted in reset + * which based on a clock counter (TSENS clock assumed) + */ +#define BCM2835_TS_TSENSCTL_RSTDELAY_SHIFT 18 +#define BCM2835_TS_TSENSCTL_RSTDELAY_BITS 8 +#define BCM2835_TS_TSENSCTL_REGULEN BIT(26) + +#define BCM2835_TS_TSENSSTAT_DATA_BITS 10 +#define BCM2835_TS_TSENSSTAT_DATA_SHIFT 0 +#define BCM2835_TS_TSENSSTAT_DATA_MASK \ + GENMASK(BCM2835_TS_TSENSSTAT_DATA_BITS + \ + BCM2835_TS_TSENSSTAT_DATA_SHIFT - 1, \ + BCM2835_TS_TSENSSTAT_DATA_SHIFT) +#define BCM2835_TS_TSENSSTAT_VALID BIT(10) +#define BCM2835_TS_TSENSSTAT_INTERRUPT BIT(11) + +struct bcm2835_thermal_data { + struct thermal_zone_device *tz; + void __iomem *regs; + struct clk *clk; + struct dentry *debugfsdir; +}; + +static int bcm2835_thermal_adc2temp(u32 adc, int offset, int slope) +{ + return offset + slope * adc; +} + +static int bcm2835_thermal_temp2adc(int temp, int offset, int slope) +{ + temp -= offset; + temp /= slope; + + if (temp < 0) + temp = 0; + if (temp >= BIT(BCM2835_TS_TSENSSTAT_DATA_BITS)) + temp = BIT(BCM2835_TS_TSENSSTAT_DATA_BITS) - 1; + + return temp; +} + +static int bcm2835_thermal_get_temp(void *d, int *temp) +{ + struct bcm2835_thermal_data *data = d; + u32 val = readl(data->regs + BCM2835_TS_TSENSSTAT); + + if (!(val & BCM2835_TS_TSENSSTAT_VALID)) + return -EIO; + + val &= BCM2835_TS_TSENSSTAT_DATA_MASK; + + *temp = bcm2835_thermal_adc2temp( + val, + thermal_zone_get_offset(data->tz), + thermal_zone_get_slope(data->tz)); + + return 0; +} + +static const struct debugfs_reg32 bcm2835_thermal_regs[] = { + { + .name = "ctl", + .offset = 0 + }, + { + .name = "stat", + .offset = 4 + } +}; + +static void bcm2835_thermal_debugfs(struct platform_device *pdev) +{ + struct thermal_zone_device *tz = platform_get_drvdata(pdev); + struct bcm2835_thermal_data *data = tz->devdata; + struct debugfs_regset32 *regset; + + data->debugfsdir = debugfs_create_dir("bcm2835_thermal", NULL); + if (!data->debugfsdir) + return; + + regset = devm_kzalloc(&pdev->dev, sizeof(*regset), GFP_KERNEL); + if (!regset) + return; + + regset->regs = bcm2835_thermal_regs; + regset->nregs = ARRAY_SIZE(bcm2835_thermal_regs); + regset->base = data->regs; + + debugfs_create_regset32("regset", 0444, data->debugfsdir, regset); +} + +static struct thermal_zone_of_device_ops bcm2835_thermal_ops = { + .get_temp = bcm2835_thermal_get_temp, +}; + +/* + * Note: as per Raspberry Foundation FAQ + * (https://www.raspberrypi.org/help/faqs/#performanceOperatingTemperature) + * the recommended temperature range for the SoC -40C to +85C + * so the trip limit is set to 80C. + * this applies to all the BCM283X SoC + */ + +static const struct of_device_id bcm2835_thermal_of_match_table[] = { + { + .compatible = "brcm,bcm2835-thermal", + }, + { + .compatible = "brcm,bcm2836-thermal", + }, + { + .compatible = "brcm,bcm2837-thermal", + }, + {}, +}; +MODULE_DEVICE_TABLE(of, bcm2835_thermal_of_match_table); + +static int bcm2835_thermal_probe(struct platform_device *pdev) +{ + const struct of_device_id *match; + struct thermal_zone_device *tz; + struct bcm2835_thermal_data *data; + struct resource *res; + int err = 0; + u32 val; + unsigned long rate; + + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + match = of_match_device(bcm2835_thermal_of_match_table, + &pdev->dev); + if (!match) + return -EINVAL; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + data->regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(data->regs)) { + err = PTR_ERR(data->regs); + dev_err(&pdev->dev, "Could not get registers: %d\n", err); + return err; + } + + data->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(data->clk)) { + err = PTR_ERR(data->clk); + if (err != -EPROBE_DEFER) + dev_err(&pdev->dev, "Could not get clk: %d\n", err); + return err; + } + + err = clk_prepare_enable(data->clk); + if (err) + return err; + + rate = clk_get_rate(data->clk); + if ((rate < 1920000) || (rate > 5000000)) + dev_warn(&pdev->dev, + "Clock %pCn running at %pCr Hz is outside of the recommended range: 1.92 to 5MHz\n", + data->clk, data->clk); + + /* register of thermal sensor and get info from DT */ + tz = thermal_zone_of_sensor_register(&pdev->dev, 0, data, + &bcm2835_thermal_ops); + if (IS_ERR(tz)) { + err = PTR_ERR(tz); + dev_err(&pdev->dev, + "Failed to register the thermal device: %d\n", + err); + goto err_clk; + } + + /* + * right now the FW does set up the HW-block, so we are not + * touching the configuration registers. + * But if the HW is not enabled, then set it up + * using "sane" values used by the firmware right now. + */ + val = readl(data->regs + BCM2835_TS_TSENSCTL); + if (!(val & BCM2835_TS_TSENSCTL_RSTB)) { + int trip_temp, offset, slope; + + slope = thermal_zone_get_slope(tz); + offset = thermal_zone_get_offset(tz); + /* + * For now we deal only with critical, otherwise + * would need to iterate + */ + err = tz->ops->get_trip_temp(tz, 0, &trip_temp); + if (err < 0) { + err = PTR_ERR(tz); + dev_err(&pdev->dev, + "Not able to read trip_temp: %d\n", + err); + goto err_tz; + } + + /* set bandgap reference voltage and enable voltage regulator */ + val = (BCM2835_TS_TSENSCTL_CTRL_DEFAULT << + BCM2835_TS_TSENSCTL_CTRL_SHIFT) | + BCM2835_TS_TSENSCTL_REGULEN; + + /* use the recommended reset duration */ + val |= (0xFE << BCM2835_TS_TSENSCTL_RSTDELAY_SHIFT); + + /* trip_adc value from info */ + val |= bcm2835_thermal_temp2adc(trip_temp, + offset, + slope) + << BCM2835_TS_TSENSCTL_THOLD_SHIFT; + + /* write the value back to the register as 2 steps */ + writel(val, data->regs + BCM2835_TS_TSENSCTL); + val |= BCM2835_TS_TSENSCTL_RSTB; + writel(val, data->regs + BCM2835_TS_TSENSCTL); + } + + data->tz = tz; + + platform_set_drvdata(pdev, tz); + + bcm2835_thermal_debugfs(pdev); + + return 0; +err_tz: + thermal_zone_of_sensor_unregister(&pdev->dev, tz); +err_clk: + clk_disable_unprepare(data->clk); + + return err; +} + +static int bcm2835_thermal_remove(struct platform_device *pdev) +{ + struct thermal_zone_device *tz = platform_get_drvdata(pdev); + struct bcm2835_thermal_data *data = tz->devdata; + + debugfs_remove_recursive(data->debugfsdir); + thermal_zone_of_sensor_unregister(&pdev->dev, tz); + clk_disable_unprepare(data->clk); + + return 0; +} + +static struct platform_driver bcm2835_thermal_driver = { + .probe = bcm2835_thermal_probe, + .remove = bcm2835_thermal_remove, + .driver = { + .name = "bcm2835_thermal", + .of_match_table = bcm2835_thermal_of_match_table, + }, +}; +module_platform_driver(bcm2835_thermal_driver); + +MODULE_AUTHOR("Martin Sperl"); +MODULE_DESCRIPTION("Thermal driver for bcm2835 chip"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3-70-g09d2