From patchwork Fri Sep 6 09:36:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Junhao Xie X-Patchwork-Id: 826542 Received: from classfun.cn (unknown [129.204.178.38]) by smtp.subspace.kernel.org (Postfix) with ESMTP id B090241A8F; Fri, 6 Sep 2024 09:38:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=129.204.178.38 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725615485; cv=none; b=mk3EVNmIt/22+/Tnt06z8kXfg2teQKGBBpFoeYO02lj7m8KOzF9vljJSG0VtXV7iME9EKMpBKYIr8LyJIjZM3x0uDgdYmgwCtSqy5B3+3QXBv/mujMNOHR8DBWpz+/x7jqz3VmEnbBE4xhYzN4nuiHh4i9tvj/eL43is7lWLPMY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725615485; c=relaxed/simple; bh=oPYISi4yWVVYfDy1Yeg0W4Indj3Ueaj5PNzpCrS28AE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=tnJ7kMAyKRrKXk12fVVYG247zCscCxOqEQCNETuV3mBB4FDTkOY3rAebL8Xh9eWXvBQ+jh2XijzLiaogXrSm0kn7Gf15F1iWkU4IqS2Gh/EzNIk/gsVkBRSgsYzi56s6WTFkoz9tpNjalIuHuWxDFzlBhjNixW6sj84z/ircjNM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=classfun.cn; spf=pass smtp.mailfrom=classfun.cn; dkim=pass (1024-bit key) header.d=classfun.cn header.i=@classfun.cn header.b=odK1zfRV; arc=none smtp.client-ip=129.204.178.38 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=classfun.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=classfun.cn Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=classfun.cn header.i=@classfun.cn header.b="odK1zfRV" Received: from bigfoot-server-storage.classfun.cn (unknown [124.72.163.35]) (Authenticated sender: bigfoot) by classfun.cn (Postfix) with ESMTPSA id D5E59789FF; Fri, 6 Sep 2024 17:37:53 +0800 (CST) DKIM-Filter: OpenDKIM Filter v2.11.0 classfun.cn D5E59789FF DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=classfun.cn; s=default; t=1725615480; bh=omzsCObrmYZvdo+jXnzf7Q5rY829DumQmkjYVM1togY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=odK1zfRVawuaSL7Yi07Hi04IpTcHWwpSPwHBGPl6zLICo2WQTuZ0777tFF0eHD0rw wh1mfT3MOUiOkgb8Vb/xhGr71gosNyALABrXlYh8kLAleDmnKEM/lYxGbHm6VFTjDw pbfKkWdzLvTZqclzX8bTMlK9HczwlrkKX2I1ku1I= From: Junhao Xie To: devicetree@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org, linux-leds@vger.kernel.org, linux-pm@vger.kernel.org, linux-rtc@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org Cc: Jean Delvare , Guenter Roeck , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Pavel Machek , Lee Jones , Sebastian Reichel , Alexandre Belloni , Wim Van Sebroeck , Heiko Stuebner , Chukun Pan , Junhao Xie Subject: [PATCH 1/9] mfd: Add driver for Photonicat power management MCU Date: Fri, 6 Sep 2024 17:36:22 +0800 Message-ID: <20240906093630.2428329-2-bigfoot@classfun.cn> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240906093630.2428329-1-bigfoot@classfun.cn> References: <20240906093630.2428329-1-bigfoot@classfun.cn> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add a driver for Photonicat power management MCU, which provides battery and charger power supply, real-time clock, watchdog, hardware shutdown. This driver implementes core MFD/serdev device as well as communication subroutines necessary for commanding the device. Signed-off-by: Junhao Xie --- drivers/mfd/Kconfig | 13 + drivers/mfd/Makefile | 1 + drivers/mfd/photonicat-pmu.c | 501 +++++++++++++++++++++++++++++ include/linux/mfd/photonicat-pmu.h | 86 +++++ 4 files changed, 601 insertions(+) create mode 100644 drivers/mfd/photonicat-pmu.c create mode 100644 include/linux/mfd/photonicat-pmu.h diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index bc8be2e593b6..5fd339aa0f9a 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -1135,6 +1135,19 @@ config MFD_PM8XXX Say M here if you want to include support for PM8xxx chips as a module. This will build a module called "pm8xxx-core". +config MFD_PHOTONICAT_PMU + tristate "Photonicat Power Management MCU" + depends on OF + depends on SERIAL_DEV_BUS + select CRC16 + select MFD_CORE + help + Driver for the Power Management MCU in the Ariaboard Photonicat, + which provides battery and charger power supply, real-time clock, + watchdog, hardware shutdown. + + Say M or Y here to include this support. + config MFD_QCOM_RPM tristate "Qualcomm Resource Power Manager (RPM)" depends on ARCH_QCOM && OF diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 02b651cd7535..25872850f216 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -223,6 +223,7 @@ obj-$(CONFIG_MFD_INTEL_LPSS_PCI) += intel-lpss-pci.o obj-$(CONFIG_MFD_INTEL_LPSS_ACPI) += intel-lpss-acpi.o obj-$(CONFIG_MFD_INTEL_PMC_BXT) += intel_pmc_bxt.o obj-$(CONFIG_MFD_PALMAS) += palmas.o +obj-$(CONFIG_MFD_PHOTONICAT_PMU) += photonicat-pmu.o obj-$(CONFIG_MFD_VIPERBOARD) += viperboard.o obj-$(CONFIG_MFD_NTXEC) += ntxec.o obj-$(CONFIG_MFD_RC5T583) += rc5t583.o rc5t583-irq.o diff --git a/drivers/mfd/photonicat-pmu.c b/drivers/mfd/photonicat-pmu.c new file mode 100644 index 000000000000..e6bbaf256c50 --- /dev/null +++ b/drivers/mfd/photonicat-pmu.c @@ -0,0 +1,501 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2024 Junhao Xie + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define PCAT_ADDR_CPU(id) ((id & 0x7F)) +#define PCAT_ADDR_PMU(id) ((id & 0x7F) | 0x80) +#define PCAT_ADDR_CPU_ALL 0x80 +#define PCAT_ADDR_PMU_ALL 0xFE +#define PCAT_ADDR_ALL 0xFF + +#define PCAT_MAGIC_HEAD 0xA5 +#define PCAT_MAGIC_END 0x5A + +struct pcat_data_head { + u8 magic_head; + u8 source; + u8 dest; + u16 frame_id; + u16 length; + u16 command; +} __packed; + +struct pcat_data_foot { + u8 need_ack; + u16 crc16; + u8 magic_end; +} __packed; + +struct pcat_data { + struct pcat_pmu *pmu; + struct pcat_data_head *head; + struct pcat_data_foot *foot; + void *data; + size_t size; +}; + +struct pcat_request { + struct pcat_pmu *pmu; + u16 frame_id; + struct completion received; + struct pcat_request_request { + u16 cmd; + u16 want; + const void *data; + size_t size; + } request; + struct pcat_request_reply { + struct pcat_data_head head; + struct pcat_data_foot foot; + void *data; + size_t size; + } reply; +}; + +struct pcat_pmu { + struct device *dev; + struct serdev_device *serdev; + atomic_t frame; + char buffer[8192]; + size_t length; + struct pcat_request *reply; + spinlock_t bus_lock; + struct mutex reply_lock; + struct mutex status_lock; + struct completion first_status; + struct blocking_notifier_head notifier_list; + u8 local_id; + u8 remote_id; +}; + +void *pcat_data_get_data(struct pcat_data *data) +{ + if (!data) + return NULL; + return data->data; +} +EXPORT_SYMBOL_GPL(pcat_data_get_data); + +static int pcat_pmu_raw_write(struct pcat_pmu *pmu, u16 frame_id, + enum pcat_pmu_cmd cmd, bool need_ack, + const void *data, size_t len) +{ + int ret; + struct pcat_data_head head; + struct pcat_data_foot foot; + + head.magic_head = PCAT_MAGIC_HEAD; + head.source = PCAT_ADDR_CPU(pmu->local_id); + head.dest = PCAT_ADDR_PMU(pmu->remote_id); + head.frame_id = frame_id; + head.length = len + sizeof(struct pcat_data_foot) - 1; + head.command = cmd; + + ret = serdev_device_write_buf(pmu->serdev, (u8 *)&head, sizeof(head)); + if (ret < 0) { + dev_err(pmu->dev, "failed to write frame head: %d", ret); + return ret; + } + + ret = serdev_device_write_buf(pmu->serdev, data, len); + if (ret < 0) { + dev_err(pmu->dev, "failed to write frame body: %d", ret); + return ret; + } + + foot.need_ack = need_ack; + foot.crc16 = 0; + foot.magic_end = PCAT_MAGIC_END; + foot.crc16 = crc16(0xFFFF, (u8 *)&head + 1, sizeof(head) - 1); + foot.crc16 = crc16(foot.crc16, data, len); + foot.crc16 = crc16(foot.crc16, (u8 *)&foot, 1); + + ret = serdev_device_write_buf(pmu->serdev, (u8 *)&foot, sizeof(foot)); + if (ret < 0) + dev_err(pmu->dev, "failed to send frame foot: %d", ret); + + return ret; +} + +int pcat_pmu_send(struct pcat_pmu *pmu, enum pcat_pmu_cmd cmd, + const void *data, size_t len) +{ + u16 frame_id = atomic_inc_return(&pmu->frame); + + return pcat_pmu_raw_write(pmu, frame_id, cmd, false, data, len); +} +EXPORT_SYMBOL_GPL(pcat_pmu_send); + +int pcat_pmu_execute(struct pcat_request *request) +{ + int ret = 0, retries = 0; + unsigned long flags; + struct pcat_pmu *pmu = request->pmu; + struct pcat_request_request *req = &request->request; + struct pcat_request_reply *reply = &request->reply; + + init_completion(&request->received); + memset(reply, 0, sizeof(request->reply)); + + mutex_lock(&pmu->reply_lock); + if (request->frame_id == 0) + request->frame_id = atomic_inc_return(&pmu->frame); + pmu->reply = request; + mutex_unlock(&pmu->reply_lock); + + if (req->want == 0) + req->want = req->cmd + 1; + + dev_dbg(pmu->dev, "frame 0x%04X execute cmd 0x%02X\n", + request->frame_id, req->cmd); + + while (1) { + spin_lock_irqsave(&pmu->bus_lock, flags); + ret = pcat_pmu_raw_write(pmu, request->frame_id, req->cmd, + true, req->data, req->size); + spin_unlock_irqrestore(&pmu->bus_lock, flags); + if (ret < 0) { + dev_err(pmu->dev, + "frame 0x%04X write 0x%02X cmd failed: %d\n", + request->frame_id, req->cmd, ret); + goto fail; + } + dev_dbg(pmu->dev, "frame 0x%04X waiting response for 0x%02X\n", + request->frame_id, req->cmd); + if (!wait_for_completion_timeout(&request->received, HZ)) { + if (retries < 3) { + retries++; + continue; + } else { + dev_warn(pmu->dev, + "frame 0x%04X cmd 0x%02X timeout\n", + request->frame_id, req->cmd); + ret = -ETIMEDOUT; + goto fail; + } + } + break; + } + dev_dbg(pmu->dev, "frame 0x%04X got response 0x%02X\n", + request->frame_id, reply->head.command); + + return 0; +fail: + mutex_lock(&pmu->reply_lock); + pmu->reply = NULL; + mutex_unlock(&pmu->reply_lock); + return ret; +} +EXPORT_SYMBOL_GPL(pcat_pmu_execute); + +int pcat_pmu_write_data(struct pcat_pmu *pmu, enum pcat_pmu_cmd cmd, + const void *data, size_t size) +{ + int ret; + struct pcat_request request = { + .pmu = pmu, + .request.cmd = cmd, + .request.data = data, + .request.size = size, + }; + ret = pcat_pmu_execute(&request); + if (request.reply.data) + devm_kfree(pmu->dev, request.reply.data); + return ret; +} +EXPORT_SYMBOL_GPL(pcat_pmu_write_data); + +int pcat_pmu_read_string(struct pcat_pmu *pmu, enum pcat_pmu_cmd cmd, + char *str, size_t len) +{ + int ret; + struct pcat_request request = { + .pmu = pmu, + .request.cmd = cmd, + }; + memset(str, 0, len); + ret = pcat_pmu_execute(&request); + if (request.reply.data) { + memcpy(str, request.reply.data, + min(len - 1, request.reply.size)); + devm_kfree(pmu->dev, request.reply.data); + }; + return ret; +} +EXPORT_SYMBOL_GPL(pcat_pmu_read_string); + +int pcat_pmu_write_u8(struct pcat_pmu *pmu, enum pcat_pmu_cmd cmd, u8 v) +{ + return pcat_pmu_write_data(pmu, cmd, &v, sizeof(v)); +} +EXPORT_SYMBOL_GPL(pcat_pmu_write_u8); + +static bool pcat_process_reply(struct pcat_data *p) +{ + bool processed = false; + struct pcat_pmu *pmu = p->pmu; + struct device *dev = pmu->dev; + struct pcat_request *request; + struct pcat_request_request *req; + struct pcat_request_reply *reply; + + mutex_lock(&pmu->reply_lock); + request = pmu->reply; + if (!request) + goto skip; + + req = &request->request; + reply = &request->reply; + if (request->frame_id != p->head->frame_id) { + dev_dbg_ratelimited(dev, "skip mismatch frame %04X != %04X", + request->frame_id, p->head->frame_id); + goto skip; + } + + if (req->want == 0) + req->want = req->cmd + 1; + + if (req->want != p->head->command) { + dev_dbg_ratelimited( + dev, "frame %04X skip mismatch command %02X != %02X", + request->frame_id, req->want, p->head->command); + goto skip; + } + + if (completion_done(&request->received)) { + dev_dbg_ratelimited(dev, "frame %04X skip done completion", + request->frame_id); + goto skip; + } + + memcpy(&reply->head, p->head, sizeof(struct pcat_data_head)); + memcpy(&reply->foot, p->foot, sizeof(struct pcat_data_foot)); + if (p->data && p->size > 0) { + reply->data = devm_kzalloc(pmu->dev, p->size + 1, GFP_KERNEL); + if (pmu->reply->reply.data) { + memcpy(reply->data, p->data, p->size); + reply->size = p->size; + } + } + + complete(&request->received); + pmu->reply = NULL; + processed = true; + +skip: + mutex_unlock(&pmu->reply_lock); + return processed; +} + +static int pcat_process_data(struct pcat_pmu *pmu, const u8 *data, size_t len) +{ + int ret; + u16 crc16_calc; + size_t data_size = 0; + struct pcat_data frame; + + memset(&frame, 0, sizeof(frame)); + frame.pmu = pmu; + if (len < sizeof(struct pcat_data_head)) { + dev_dbg_ratelimited(pmu->dev, "head too small %zu < %zu\n", len, + sizeof(struct pcat_data_head)); + return -EAGAIN; + } + + frame.head = (struct pcat_data_head *)data; + if (frame.head->magic_head != PCAT_MAGIC_HEAD) { + dev_dbg_ratelimited(pmu->dev, "bad head magic %02X\n", + frame.head->magic_head); + return -EBADMSG; + } + + if (frame.head->source != PCAT_ADDR_PMU(pmu->remote_id)) { + dev_dbg_ratelimited(pmu->dev, "unknown data source %02X\n", + frame.head->source); + return 0; + } + if (frame.head->dest != PCAT_ADDR_CPU(pmu->local_id) && + frame.head->dest != PCAT_ADDR_CPU_ALL && + frame.head->dest != PCAT_ADDR_ALL) { + dev_dbg_ratelimited(pmu->dev, "not data destination %02X\n", + frame.head->dest); + return 0; + } + if (frame.head->length < sizeof(struct pcat_data_foot) - 1 || + frame.head->length >= U16_MAX - 4) { + dev_dbg_ratelimited(pmu->dev, "invalid length %d\n", + frame.head->length); + return -EBADMSG; + } + data_size = sizeof(struct pcat_data_head) + frame.head->length + 1; + if (data_size > len) { + dev_dbg_ratelimited(pmu->dev, "data too small %zu > %zu\n", + data_size, len); + return -EAGAIN; + } + frame.data = (u8 *)data + sizeof(struct pcat_data_head); + frame.size = frame.head->length + 1 - sizeof(struct pcat_data_foot); + frame.foot = (struct pcat_data_foot *)(data + frame.size + + sizeof(struct pcat_data_head)); + if (frame.foot->magic_end != PCAT_MAGIC_END) { + dev_dbg_ratelimited(pmu->dev, "bad foot magic %02X\n", + frame.foot->magic_end); + return -EBADMSG; + } + crc16_calc = crc16(0xFFFF, data + 1, frame.head->length + 6); + if (frame.foot->crc16 != crc16_calc) { + dev_warn_ratelimited(pmu->dev, "crc16 mismatch %04X != %04X\n", + frame.foot->crc16, crc16_calc); + return -EBADMSG; + } + + if (pcat_process_reply(&frame)) + return 0; + + ret = blocking_notifier_call_chain(&pmu->notifier_list, + frame.head->command, &frame); + if (ret == NOTIFY_DONE && frame.foot->need_ack) { + pcat_pmu_raw_write(pmu, frame.head->frame_id, + frame.head->command + 1, false, NULL, 0); + } + + return 0; +} + +static size_t pcat_pmu_receive_buf(struct serdev_device *serdev, + const unsigned char *buf, size_t size) +{ + struct device *dev = &serdev->dev; + struct pcat_pmu *pmu = dev_get_drvdata(dev); + size_t processed = size; + int ret; + size_t new_len = pmu->length + size; + + if (!pmu || !buf || size <= 0) + return 0; + if (new_len > sizeof(pmu->buffer)) { + new_len = sizeof(pmu->buffer); + processed = new_len - pmu->length; + } + if (pmu->length) + dev_dbg(pmu->dev, "got remaining message at %zu size %zu (%zu)", + pmu->length, processed, new_len); + memcpy(pmu->buffer + pmu->length, buf, processed); + pmu->length = new_len; + ret = pcat_process_data(pmu, pmu->buffer, pmu->length); + if (ret != -EAGAIN) + pmu->length = 0; + else + dev_dbg(pmu->dev, "got partial message %zu", pmu->length); + return processed; +} + +static const struct serdev_device_ops pcat_pmu_serdev_device_ops = { + .receive_buf = pcat_pmu_receive_buf, + .write_wakeup = serdev_device_write_wakeup, +}; + +int pcat_pmu_register_notify(struct pcat_pmu *pmu, struct notifier_block *nb) +{ + return blocking_notifier_chain_register(&pmu->notifier_list, nb); +} +EXPORT_SYMBOL_GPL(pcat_pmu_register_notify); + +void pcat_pmu_unregister_notify(struct pcat_pmu *pmu, struct notifier_block *nb) +{ + blocking_notifier_chain_unregister(&pmu->notifier_list, nb); +} +EXPORT_SYMBOL_GPL(pcat_pmu_unregister_notify); + +static int pcat_pmu_probe(struct serdev_device *serdev) +{ + int ret; + u32 baudrate; + u32 address; + char buffer[64]; + struct pcat_pmu *pmu = NULL; + struct device *dev = &serdev->dev; + + pmu = devm_kzalloc(dev, sizeof(struct pcat_pmu), GFP_KERNEL); + if (!pmu) + return -ENOMEM; + pmu->dev = dev; + pmu->serdev = serdev; + spin_lock_init(&pmu->bus_lock); + mutex_init(&pmu->reply_lock); + init_completion(&pmu->first_status); + + if (of_property_read_u32(dev->of_node, "current-speed", &baudrate)) + baudrate = 115200; + + if (of_property_read_u32(dev->of_node, "local-address", &address)) + address = 1; + pmu->local_id = address; + + if (of_property_read_u32(dev->of_node, "remote-address", &address)) + address = 1; + pmu->remote_id = address; + + serdev_device_set_client_ops(serdev, &pcat_pmu_serdev_device_ops); + ret = devm_serdev_device_open(dev, serdev); + if (ret < 0) + return dev_err_probe(dev, ret, "Failed to open serdev\n"); + + serdev_device_set_baudrate(serdev, baudrate); + serdev_device_set_flow_control(serdev, false); + serdev_device_set_parity(serdev, SERDEV_PARITY_NONE); + dev_set_drvdata(dev, pmu); + + /* Disable watchdog on boot */ + pcat_pmu_write_data(pmu, PCAT_CMD_WATCHDOG_TIMEOUT_SET, + (u8[]){ 60, 60, 0 }, 3); + + /* Read hardware version */ + pcat_pmu_read_string(pmu, PCAT_CMD_PMU_HW_VERSION_GET, + buffer, sizeof(buffer)); + if (buffer[0]) + dev_info(dev, "PMU Hardware version: %s\n", buffer); + + /* Read firmware version */ + pcat_pmu_read_string(pmu, PCAT_CMD_PMU_FW_VERSION_GET, + buffer, sizeof(buffer)); + if (buffer[0]) + dev_info(dev, "PMU Firmware version: %s\n", buffer); + + return devm_of_platform_populate(dev); +} + +static const struct of_device_id pcat_pmu_dt_ids[] = { + { .compatible = "ariaboard,photonicat-pmu", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, pcat_pmu_dt_ids); + +static struct serdev_device_driver pcat_pmu_driver = { + .driver = { + .name = "photonicat-pmu", + .of_match_table = pcat_pmu_dt_ids, + }, + .probe = pcat_pmu_probe, +}; +module_serdev_device_driver(pcat_pmu_driver); + +MODULE_ALIAS("platform:photonicat-pmu"); +MODULE_AUTHOR("Junhao Xie "); +MODULE_DESCRIPTION("Photonicat Power Management Unit"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/mfd/photonicat-pmu.h b/include/linux/mfd/photonicat-pmu.h new file mode 100644 index 000000000000..1bada5efd83a --- /dev/null +++ b/include/linux/mfd/photonicat-pmu.h @@ -0,0 +1,86 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2024 Junhao Xie + */ + +#ifndef _PHOTONICAT_PMU_H +#define _PHOTONICAT_PMU_H + +#include +#include + +struct pcat_data; +struct pcat_pmu; +struct pcat_request; + +struct pcat_data_cmd_date_time { + u16 year; + u8 month; + u8 day; + u8 hour; + u8 minute; + u8 second; +} __packed; + +struct pcat_data_cmd_led_setup { + u16 on_time; + u16 down_time; + u16 repeat; +} __packed; + +struct pcat_data_cmd_status { + u16 battery_microvolt; + u16 charger_microvolt; + u16 gpio_input; + u16 gpio_output; + struct pcat_data_cmd_date_time time; + u16 reserved; + u8 temp; +} __packed; + +enum pcat_pmu_cmd { + PCAT_CMD_HEARTBEAT = 0x01, + PCAT_CMD_HEARTBEAT_ACK = 0x02, + PCAT_CMD_PMU_HW_VERSION_GET = 0x03, + PCAT_CMD_PMU_HW_VERSION_GET_ACK = 0x04, + PCAT_CMD_PMU_FW_VERSION_GET = 0x05, + PCAT_CMD_PMU_FW_VERSION_GET_ACK = 0x06, + PCAT_CMD_STATUS_REPORT = 0x07, + PCAT_CMD_STATUS_REPORT_ACK = 0x08, + PCAT_CMD_DATE_TIME_SYNC = 0x09, + PCAT_CMD_DATE_TIME_SYNC_ACK = 0x0A, + PCAT_CMD_SCHEDULE_STARTUP_TIME_SET = 0x0B, + PCAT_CMD_SCHEDULE_STARTUP_TIME_SET_ACK = 0x0C, + PCAT_CMD_PMU_REQUEST_SHUTDOWN = 0x0D, + PCAT_CMD_PMU_REQUEST_SHUTDOWN_ACK = 0x0E, + PCAT_CMD_HOST_REQUEST_SHUTDOWN = 0x0F, + PCAT_CMD_HOST_REQUEST_SHUTDOWN_ACK = 0x10, + PCAT_CMD_PMU_REQUEST_FACTORY_RESET = 0x11, + PCAT_CMD_PMU_REQUEST_FACTORY_RESET_ACK = 0x12, + PCAT_CMD_WATCHDOG_TIMEOUT_SET = 0x13, + PCAT_CMD_WATCHDOG_TIMEOUT_SET_ACK = 0x14, + PCAT_CMD_CHARGER_ON_AUTO_START = 0x15, + PCAT_CMD_CHARGER_ON_AUTO_START_ACK = 0x16, + PCAT_CMD_VOLTAGE_THRESHOLD_SET = 0x17, + PCAT_CMD_VOLTAGE_THRESHOLD_SET_ACK = 0x18, + PCAT_CMD_NET_STATUS_LED_SETUP = 0x19, + PCAT_CMD_NET_STATUS_LED_SETUP_ACK = 0x1A, + PCAT_CMD_POWER_ON_EVENT_GET = 0x1B, + PCAT_CMD_POWER_ON_EVENT_GET_ACK = 0x1C, +}; + +void *pcat_data_get_data(struct pcat_data *data); +int pcat_pmu_send(struct pcat_pmu *pmu, enum pcat_pmu_cmd cmd, + const void *data, size_t len); +int pcat_pmu_execute(struct pcat_request *request); +int pcat_pmu_write_data(struct pcat_pmu *pmu, enum pcat_pmu_cmd cmd, + const void *data, size_t size); +int pcat_pmu_read_string(struct pcat_pmu *pmu, enum pcat_pmu_cmd cmd, + char *str, size_t len); +int pcat_pmu_write_u8(struct pcat_pmu *pmu, enum pcat_pmu_cmd cmd, u8 value); +int pcat_pmu_register_notify(struct pcat_pmu *pmu, + struct notifier_block *nb); +void pcat_pmu_unregister_notify(struct pcat_pmu *pmu, + struct notifier_block *nb); + +#endif