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authorLinus Torvalds <torvalds@linux-foundation.org>2019-07-15 21:06:15 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-07-15 21:06:15 -0700
commit5fe7b600a116187e10317d83fb56922c4ef6b76d (patch)
tree8586fc00d7dd14aa0e8853f53c00426faa3606d1 /drivers/power/reset
parentfb4da215ed92f564f7ca090bb81a199b0d6cab8a (diff)
parentcaa2b557841c8cedc1d4862cd31cf76ee940d105 (diff)
downloadlinux-5fe7b600a116187e10317d83fb56922c4ef6b76d.tar.bz2
Merge tag 'for-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Pull power supply and reset updates from Sebastian Reichel: "Core: - add HWMON compat layer - new properties: - input power limit - input voltage limit Drivers: - qcom-pon: add gen2 support - new driver for storing reboot move in NVMEM - new driver for Wilco EC charger configuration - simplify getting the adapter of a client" * tag 'for-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: power: reset: nvmem-reboot-mode: add CONFIG_OF dependency power_supply: wilco_ec: Add charging config driver power: supply: cros: allow to set input voltage and current limit power: supply: add input power and voltage limit properties power: supply: fix semicolon.cocci warnings power: reset: nvmem-reboot-mode: use NVMEM as reboot mode write interface dt-bindings: power: reset: add document for NVMEM based reboot-mode reset: qcom-pon: Add support for gen2 pon dt-bindings: power: reset: qcom: Add qcom,pm8998-pon compatibility line power: supply: Add HWMON compatibility layer power: supply: sbs-manager: simplify getting the adapter of a client power: supply: rt9455_charger: simplify getting the adapter of a client power: supply: rt5033_battery: simplify getting the adapter of a client power: supply: max17042_battery: simplify getting the adapter of a client power: supply: max17040_battery: simplify getting the adapter of a client power: supply: max14656_charger_detector: simplify getting the adapter of a client power: supply: bq25890_charger: simplify getting the adapter of a client power: supply: bq24257_charger: simplify getting the adapter of a client power: supply: bq24190_charger: simplify getting the adapter of a client
Diffstat (limited to 'drivers/power/reset')
-rw-r--r--drivers/power/reset/Kconfig10
-rw-r--r--drivers/power/reset/Makefile1
-rw-r--r--drivers/power/reset/nvmem-reboot-mode.c76
-rw-r--r--drivers/power/reset/qcom-pon.c12
4 files changed, 96 insertions, 3 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/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);