diff options
Diffstat (limited to 'drivers/power/reset')
-rw-r--r-- | drivers/power/reset/Kconfig | 10 | ||||
-rw-r--r-- | drivers/power/reset/Makefile | 1 | ||||
-rw-r--r-- | drivers/power/reset/arm-versatile-reboot.c | 6 | ||||
-rw-r--r-- | drivers/power/reset/gpio-poweroff.c | 6 | ||||
-rw-r--r-- | drivers/power/reset/hisi-reboot.c | 5 | ||||
-rw-r--r-- | drivers/power/reset/keystone-reset.c | 5 | ||||
-rw-r--r-- | drivers/power/reset/nvmem-reboot-mode.c | 76 | ||||
-rw-r--r-- | drivers/power/reset/qcom-pon.c | 12 | ||||
-rw-r--r-- | drivers/power/reset/restart-poweroff.c | 5 | ||||
-rw-r--r-- | drivers/power/reset/st-poweroff.c | 5 | ||||
-rw-r--r-- | drivers/power/reset/zx-reboot.c | 5 |
11 files changed, 103 insertions, 33 deletions
diff --git a/drivers/power/reset/Kconfig b/drivers/power/reset/Kconfig index 980951dff834..a564237278ff 100644 --- a/drivers/power/reset/Kconfig +++ b/drivers/power/reset/Kconfig @@ -246,5 +246,15 @@ config POWER_RESET_SC27XX PMICs includes the SC2720, SC2721, SC2723, SC2730 and SC2731 chips. +config NVMEM_REBOOT_MODE + tristate "Generic NVMEM reboot mode driver" + depends on OF + select REBOOT_MODE + help + Say y here will enable reboot mode driver. This will + get reboot mode arguments and store it in a NVMEM cell, + then the bootloader can read it and take different + action according to the mode. + endif diff --git a/drivers/power/reset/Makefile b/drivers/power/reset/Makefile index 0aebee954ac1..85da3198e4e0 100644 --- a/drivers/power/reset/Makefile +++ b/drivers/power/reset/Makefile @@ -29,3 +29,4 @@ obj-$(CONFIG_POWER_RESET_ZX) += zx-reboot.o obj-$(CONFIG_REBOOT_MODE) += reboot-mode.o obj-$(CONFIG_SYSCON_REBOOT_MODE) += syscon-reboot-mode.o obj-$(CONFIG_POWER_RESET_SC27XX) += sc27xx-poweroff.o +obj-$(CONFIG_NVMEM_REBOOT_MODE) += nvmem-reboot-mode.o diff --git a/drivers/power/reset/arm-versatile-reboot.c b/drivers/power/reset/arm-versatile-reboot.c index 06d34ab47df5..08d0a07b58ef 100644 --- a/drivers/power/reset/arm-versatile-reboot.c +++ b/drivers/power/reset/arm-versatile-reboot.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2014 Linaro Ltd. * * Author: Linus Walleij <linus.walleij@linaro.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2, as - * published by the Free Software Foundation. - * */ #include <linux/init.h> #include <linux/mfd/syscon.h> diff --git a/drivers/power/reset/gpio-poweroff.c b/drivers/power/reset/gpio-poweroff.c index 52525b6c18db..6a4bbb506551 100644 --- a/drivers/power/reset/gpio-poweroff.c +++ b/drivers/power/reset/gpio-poweroff.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Toggles a GPIO pin to power down a device * @@ -5,11 +6,6 @@ * Andrew Lunn <andrew@lunn.ch> * * Copyright (C) 2012 Jamie Lentin - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * */ #include <linux/kernel.h> #include <linux/init.h> diff --git a/drivers/power/reset/hisi-reboot.c b/drivers/power/reset/hisi-reboot.c index f69387e12c1e..0ba5fdce186f 100644 --- a/drivers/power/reset/hisi-reboot.c +++ b/drivers/power/reset/hisi-reboot.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Hisilicon SoC reset code * @@ -5,10 +6,6 @@ * Copyright (c) 2014 Linaro Ltd. * * Author: Haojian Zhuang <haojian.zhuang@linaro.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/delay.h> diff --git a/drivers/power/reset/keystone-reset.c b/drivers/power/reset/keystone-reset.c index 09380857a1c5..ad11faae19c5 100644 --- a/drivers/power/reset/keystone-reset.c +++ b/drivers/power/reset/keystone-reset.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * TI keystone reboot driver * * Copyright (C) 2014 Texas Instruments Incorporated. http://www.ti.com/ * * Author: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/io.h> diff --git a/drivers/power/reset/nvmem-reboot-mode.c b/drivers/power/reset/nvmem-reboot-mode.c new file mode 100644 index 000000000000..e229308d43e2 --- /dev/null +++ b/drivers/power/reset/nvmem-reboot-mode.c @@ -0,0 +1,76 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) Vaisala Oyj. All rights reserved. + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/of.h> +#include <linux/nvmem-consumer.h> +#include <linux/platform_device.h> +#include <linux/reboot-mode.h> + +struct nvmem_reboot_mode { + struct reboot_mode_driver reboot; + struct nvmem_cell *cell; +}; + +static int nvmem_reboot_mode_write(struct reboot_mode_driver *reboot, + unsigned int magic) +{ + int ret; + struct nvmem_reboot_mode *nvmem_rbm; + + nvmem_rbm = container_of(reboot, struct nvmem_reboot_mode, reboot); + + ret = nvmem_cell_write(nvmem_rbm->cell, &magic, sizeof(magic)); + if (ret < 0) + dev_err(reboot->dev, "update reboot mode bits failed\n"); + + return ret; +} + +static int nvmem_reboot_mode_probe(struct platform_device *pdev) +{ + int ret; + struct nvmem_reboot_mode *nvmem_rbm; + + nvmem_rbm = devm_kzalloc(&pdev->dev, sizeof(*nvmem_rbm), GFP_KERNEL); + if (!nvmem_rbm) + return -ENOMEM; + + nvmem_rbm->reboot.dev = &pdev->dev; + nvmem_rbm->reboot.write = nvmem_reboot_mode_write; + + nvmem_rbm->cell = devm_nvmem_cell_get(&pdev->dev, "reboot-mode"); + if (IS_ERR(nvmem_rbm->cell)) { + dev_err(&pdev->dev, "failed to get the nvmem cell reboot-mode\n"); + return PTR_ERR(nvmem_rbm->cell); + } + + ret = devm_reboot_mode_register(&pdev->dev, &nvmem_rbm->reboot); + if (ret) + dev_err(&pdev->dev, "can't register reboot mode\n"); + + return ret; +} + +static const struct of_device_id nvmem_reboot_mode_of_match[] = { + { .compatible = "nvmem-reboot-mode" }, + {} +}; +MODULE_DEVICE_TABLE(of, nvmem_reboot_mode_of_match); + +static struct platform_driver nvmem_reboot_mode_driver = { + .probe = nvmem_reboot_mode_probe, + .driver = { + .name = "nvmem-reboot-mode", + .of_match_table = nvmem_reboot_mode_of_match, + }, +}; +module_platform_driver(nvmem_reboot_mode_driver); + +MODULE_AUTHOR("Nandor Han <nandor.han@vaisala.com>"); +MODULE_DESCRIPTION("NVMEM reboot mode driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/power/reset/qcom-pon.c b/drivers/power/reset/qcom-pon.c index 3fa1642d4c54..22a743a0bf28 100644 --- a/drivers/power/reset/qcom-pon.c +++ b/drivers/power/reset/qcom-pon.c @@ -14,11 +14,15 @@ #define PON_SOFT_RB_SPARE 0x8f +#define GEN1_REASON_SHIFT 2 +#define GEN2_REASON_SHIFT 1 + struct pm8916_pon { struct device *dev; struct regmap *regmap; u32 baseaddr; struct reboot_mode_driver reboot_mode; + long reason_shift; }; static int pm8916_reboot_mode_write(struct reboot_mode_driver *reboot, @@ -30,7 +34,7 @@ static int pm8916_reboot_mode_write(struct reboot_mode_driver *reboot, ret = regmap_update_bits(pon->regmap, pon->baseaddr + PON_SOFT_RB_SPARE, - 0xfc, magic << 2); + 0xfc, magic << pon->reason_shift); if (ret < 0) dev_err(pon->dev, "update reboot mode bits failed\n"); @@ -60,6 +64,7 @@ static int pm8916_pon_probe(struct platform_device *pdev) return error; pon->reboot_mode.dev = &pdev->dev; + pon->reason_shift = (long)of_device_get_match_data(&pdev->dev); pon->reboot_mode.write = pm8916_reboot_mode_write; error = devm_reboot_mode_register(&pdev->dev, &pon->reboot_mode); if (error) { @@ -73,8 +78,9 @@ static int pm8916_pon_probe(struct platform_device *pdev) } static const struct of_device_id pm8916_pon_id_table[] = { - { .compatible = "qcom,pm8916-pon" }, - { .compatible = "qcom,pms405-pon" }, + { .compatible = "qcom,pm8916-pon", .data = (void *)GEN1_REASON_SHIFT }, + { .compatible = "qcom,pms405-pon", .data = (void *)GEN1_REASON_SHIFT }, + { .compatible = "qcom,pm8998-pon", .data = (void *)GEN2_REASON_SHIFT }, { } }; MODULE_DEVICE_TABLE(of, pm8916_pon_id_table); diff --git a/drivers/power/reset/restart-poweroff.c b/drivers/power/reset/restart-poweroff.c index 41b22c4d5236..d233daa5835b 100644 --- a/drivers/power/reset/restart-poweroff.c +++ b/drivers/power/reset/restart-poweroff.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Power off by restarting and let u-boot keep hold of the machine * until the user presses a button for example. @@ -5,10 +6,6 @@ * Andrew Lunn <andrew@lunn.ch> * * Copyright (C) 2012 Andrew Lunn - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/kernel.h> #include <linux/init.h> diff --git a/drivers/power/reset/st-poweroff.c b/drivers/power/reset/st-poweroff.c index 2046b31232f7..5ccaacffab54 100644 --- a/drivers/power/reset/st-poweroff.c +++ b/drivers/power/reset/st-poweroff.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2014 STMicroelectronics * * Power off Restart driver, used in STMicroelectronics devices. * * Author: Christophe Kerello <christophe.kerello@st.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2, as - * published by the Free Software Foundation. */ #include <linux/module.h> diff --git a/drivers/power/reset/zx-reboot.c b/drivers/power/reset/zx-reboot.c index 186901c96c01..457950833dba 100644 --- a/drivers/power/reset/zx-reboot.c +++ b/drivers/power/reset/zx-reboot.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * ZTE zx296702 SoC reset code * * Copyright (c) 2015 Linaro Ltd. * * Author: Jun Nie <jun.nie@linaro.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/delay.h> |