diff options
Diffstat (limited to 'pkgs/patches-linux-5.15/902-drivers-mfd-Add-a-driver-for-IEI-WT61P803-PUZZLE-MCU.patch')
| -rw-r--r-- | pkgs/patches-linux-5.15/902-drivers-mfd-Add-a-driver-for-IEI-WT61P803-PUZZLE-MCU.patch | 1034 |
1 files changed, 1034 insertions, 0 deletions
diff --git a/pkgs/patches-linux-5.15/902-drivers-mfd-Add-a-driver-for-IEI-WT61P803-PUZZLE-MCU.patch b/pkgs/patches-linux-5.15/902-drivers-mfd-Add-a-driver-for-IEI-WT61P803-PUZZLE-MCU.patch new file mode 100644 index 0000000..84d995b --- /dev/null +++ b/pkgs/patches-linux-5.15/902-drivers-mfd-Add-a-driver-for-IEI-WT61P803-PUZZLE-MCU.patch @@ -0,0 +1,1034 @@ +From 692cfa85272dd12995b427c0a7a585ced5d54f32 Mon Sep 17 00:00:00 2001 +From: Luka Kovacic <luka.kovacic () sartura ! hr> +Date: Tue, 24 Aug 2021 12:44:33 +0000 +Subject: [PATCH 2/7] drivers: mfd: Add a driver for IEI WT61P803 PUZZLE MCU + +Add a driver for the IEI WT61P803 PUZZLE microcontroller, used in some +IEI Puzzle series devices. The microcontroller controls system power, +temperature sensors, fans and LEDs. + +This driver implements the core functionality for device communication +over the system serial (serdev bus). It handles MCU messages and the +internal MCU properties. Some properties can be managed over sysfs. + +Signed-off-by: Luka Kovacic <luka.kovacic@sartura.hr> +Signed-off-by: Pavo Banicevic <pavo.banicevic@sartura.hr> +Cc: Luka Perkov <luka.perkov@sartura.hr> +Cc: Robert Marko <robert.marko@sartura.hr> +--- + drivers/mfd/Kconfig | 8 + + drivers/mfd/Makefile | 1 + + drivers/mfd/iei-wt61p803-puzzle.c | 908 ++++++++++++++++++++++++ + include/linux/mfd/iei-wt61p803-puzzle.h | 66 ++ + 4 files changed, 983 insertions(+) + create mode 100644 drivers/mfd/iei-wt61p803-puzzle.c + create mode 100644 include/linux/mfd/iei-wt61p803-puzzle.h + +--- a/drivers/mfd/Kconfig ++++ b/drivers/mfd/Kconfig +@@ -2187,6 +2187,15 @@ config SGI_MFD_IOC3 + If you have an SGI Origin, Octane, or a PCI IOC3 card, + then say Y. Otherwise say N. + ++config MFD_IEI_WT61P803_PUZZLE ++ tristate "IEI WT61P803 PUZZLE MCU driver" ++ depends on SERIAL_DEV_BUS ++ select MFD_CORE ++ help ++ IEI WT61P803 PUZZLE is a system power management microcontroller ++ used for fan control, temperature sensor reading, LED control ++ and system identification. ++ + config MFD_INTEL_M10_BMC + tristate "Intel MAX 10 Board Management Controller" + depends on SPI_MASTER +--- a/drivers/mfd/Makefile ++++ b/drivers/mfd/Makefile +@@ -237,6 +237,7 @@ obj-$(CONFIG_MFD_DLN2) += dln2.o + obj-$(CONFIG_MFD_RT4831) += rt4831.o + obj-$(CONFIG_MFD_RT5033) += rt5033.o + obj-$(CONFIG_MFD_SKY81452) += sky81452.o ++obj-$(CONFIG_MFD_IEI_WT61P803_PUZZLE) += iei-wt61p803-puzzle.o + + intel-soc-pmic-objs := intel_soc_pmic_core.o intel_soc_pmic_crc.o + obj-$(CONFIG_INTEL_SOC_PMIC) += intel-soc-pmic.o +--- /dev/null ++++ b/drivers/mfd/iei-wt61p803-puzzle.c +@@ -0,0 +1,908 @@ ++// SPDX-License-Identifier: GPL-2.0-only ++/* IEI WT61P803 PUZZLE MCU Driver ++ * System management microcontroller for fan control, temperature sensor reading, ++ * LED control and system identification on IEI Puzzle series ARM-based appliances. ++ * ++ * Copyright (C) 2020 Sartura Ltd. ++ * Author: Luka Kovacic <luka.kovacic@sartura.hr> ++ */ ++ ++#include <linux/atomic.h> ++#include <linux/delay.h> ++#include <linux/export.h> ++#include <linux/init.h> ++#include <linux/kernel.h> ++#include <linux/mfd/core.h> ++#include <linux/mfd/iei-wt61p803-puzzle.h> ++#include <linux/mod_devicetable.h> ++#include <linux/module.h> ++#include <linux/of_platform.h> ++#include <linux/property.h> ++#include <linux/sched.h> ++#include <linux/serdev.h> ++#include <linux/slab.h> ++#include <linux/sysfs.h> ++#include <asm/unaligned.h> ++ ++/* start, payload and XOR checksum at end */ ++#define IEI_WT61P803_PUZZLE_MAX_COMMAND_LENGTH (1 + 20 + 1) ++#define IEI_WT61P803_PUZZLE_RESP_BUF_SIZE 512 ++ ++#define IEI_WT61P803_PUZZLE_MAC_LENGTH 17 ++#define IEI_WT61P803_PUZZLE_SN_LENGTH 36 ++#define IEI_WT61P803_PUZZLE_VERSION_LENGTH 6 ++#define IEI_WT61P803_PUZZLE_BUILD_INFO_LENGTH 16 ++#define IEI_WT61P803_PUZZLE_PROTOCOL_VERSION_LENGTH 8 ++#define IEI_WT61P803_PUZZLE_NB_MAC 8 ++ ++/* Use HZ as a timeout value throughout the driver */ ++#define IEI_WT61P803_PUZZLE_GENERAL_TIMEOUT HZ ++ ++enum iei_wt61p803_puzzle_attribute_type { ++ IEI_WT61P803_PUZZLE_VERSION, ++ IEI_WT61P803_PUZZLE_BUILD_INFO, ++ IEI_WT61P803_PUZZLE_BOOTLOADER_MODE, ++ IEI_WT61P803_PUZZLE_PROTOCOL_VERSION, ++ IEI_WT61P803_PUZZLE_SERIAL_NUMBER, ++ IEI_WT61P803_PUZZLE_MAC_ADDRESS, ++ IEI_WT61P803_PUZZLE_AC_RECOVERY_STATUS, ++ IEI_WT61P803_PUZZLE_POWER_LOSS_RECOVERY, ++ IEI_WT61P803_PUZZLE_POWER_STATUS, ++}; ++ ++struct iei_wt61p803_puzzle_device_attribute { ++ struct device_attribute dev_attr; ++ enum iei_wt61p803_puzzle_attribute_type type; ++ u8 index; ++}; ++ ++/** ++ * struct iei_wt61p803_puzzle_mcu_status - MCU flags state ++ * @ac_recovery_status_flag: AC Recovery Status Flag ++ * @power_loss_recovery: System recovery after power loss ++ * @power_status: System Power-on Method ++ */ ++struct iei_wt61p803_puzzle_mcu_status { ++ u8 ac_recovery_status_flag; ++ u8 power_loss_recovery; ++ u8 power_status; ++}; ++ ++/** ++ * struct iei_wt61p803_puzzle_reply - MCU reply ++ * @size: Size of the MCU reply ++ * @data: Full MCU reply buffer ++ * @state: Current state of the packet ++ * @received: Was the response fullfilled ++ */ ++struct iei_wt61p803_puzzle_reply { ++ size_t size; ++ unsigned char data[IEI_WT61P803_PUZZLE_RESP_BUF_SIZE]; ++ struct completion received; ++}; ++ ++/** ++ * struct iei_wt61p803_puzzle_mcu_version - MCU version status ++ * @version: Primary firmware version ++ * @build_info: Build date and time ++ * @bootloader_mode: Status of the MCU operation ++ * @protocol_version: MCU communication protocol version ++ * @serial_number: Device factory serial number ++ * @mac_address: Device factory MAC addresses ++ * ++ * Last element of arrays is reserved for '\0'. ++ */ ++struct iei_wt61p803_puzzle_mcu_version { ++ char version[IEI_WT61P803_PUZZLE_VERSION_LENGTH + 1]; ++ char build_info[IEI_WT61P803_PUZZLE_BUILD_INFO_LENGTH + 1]; ++ bool bootloader_mode; ++ char protocol_version[IEI_WT61P803_PUZZLE_PROTOCOL_VERSION_LENGTH + 1]; ++ char serial_number[IEI_WT61P803_PUZZLE_SN_LENGTH + 1]; ++ char mac_address[IEI_WT61P803_PUZZLE_NB_MAC][IEI_WT61P803_PUZZLE_MAC_LENGTH + 1]; ++}; ++ ++/** ++ * struct iei_wt61p803_puzzle - IEI WT61P803 PUZZLE MCU Driver ++ * @serdev: Pointer to underlying serdev device ++ * @dev: Pointer to underlying dev device ++ * @reply_lock: Reply mutex lock ++ * @reply: Pointer to the iei_wt61p803_puzzle_reply struct ++ * @version: MCU version related data ++ * @status: MCU status related data ++ * @response_buffer Command response buffer allocation ++ * @lock General member mutex lock ++ */ ++struct iei_wt61p803_puzzle { ++ struct serdev_device *serdev; ++ struct device *dev; ++ struct mutex reply_lock; /* lock to prevent multiple firmware calls */ ++ struct iei_wt61p803_puzzle_reply *reply; ++ struct iei_wt61p803_puzzle_mcu_version version; ++ struct iei_wt61p803_puzzle_mcu_status status; ++ unsigned char response_buffer[IEI_WT61P803_PUZZLE_BUF_SIZE]; ++ struct mutex lock; /* lock to protect response buffer */ ++}; ++ ++static unsigned char iei_wt61p803_puzzle_checksum(unsigned char *buf, size_t len) ++{ ++ unsigned char checksum = 0; ++ size_t i; ++ ++ for (i = 0; i < len; i++) ++ checksum ^= buf[i]; ++ return checksum; ++} ++ ++static int iei_wt61p803_puzzle_process_resp(struct iei_wt61p803_puzzle *mcu, ++ const unsigned char *raw_resp_data, size_t size) ++{ ++ unsigned char checksum; ++ ++ /* Check the incoming frame header */ ++ if (!(raw_resp_data[0] == IEI_WT61P803_PUZZLE_CMD_HEADER_START || ++ raw_resp_data[0] == IEI_WT61P803_PUZZLE_CMD_HEADER_START_OTHER || ++ (raw_resp_data[0] == IEI_WT61P803_PUZZLE_CMD_HEADER_EEPROM && ++ raw_resp_data[1] == IEI_WT61P803_PUZZLE_CMD_EEPROM_READ))) { ++ if (mcu->reply->size + size >= sizeof(mcu->reply->data)) ++ return -EIO; ++ ++ /* Append the frame to existing data */ ++ memcpy(mcu->reply->data + mcu->reply->size, raw_resp_data, size); ++ mcu->reply->size += size; ++ } else { ++ if (size >= sizeof(mcu->reply->data)) ++ return -EIO; ++ ++ /* Start processing a new frame */ ++ memcpy(mcu->reply->data, raw_resp_data, size); ++ mcu->reply->size = size; ++ } ++ ++ checksum = iei_wt61p803_puzzle_checksum(mcu->reply->data, mcu->reply->size - 1); ++ if (checksum != mcu->reply->data[mcu->reply->size - 1]) { ++ /* The checksum isn't matched yet, wait for new frames */ ++ return size; ++ } ++ ++ /* Received all the data */ ++ complete(&mcu->reply->received); ++ ++ return size; ++} ++ ++static int iei_wt61p803_puzzle_recv_buf(struct serdev_device *serdev, ++ const unsigned char *data, size_t size) ++{ ++ struct iei_wt61p803_puzzle *mcu = serdev_device_get_drvdata(serdev); ++ int ret; ++ ++ ret = iei_wt61p803_puzzle_process_resp(mcu, data, size); ++ /* Return the number of processed bytes if function returns error, ++ * discard the remaining incoming data, since the frame this data ++ * belongs to is broken anyway ++ */ ++ if (ret < 0) ++ return size; ++ ++ return ret; ++} ++ ++static const struct serdev_device_ops iei_wt61p803_puzzle_serdev_device_ops = { ++ .receive_buf = iei_wt61p803_puzzle_recv_buf, ++ .write_wakeup = serdev_device_write_wakeup, ++}; ++ ++/** ++ * iei_wt61p803_puzzle_write_command_watchdog() - Watchdog of the normal cmd ++ * @mcu: Pointer to the iei_wt61p803_puzzle core MFD struct ++ * @cmd: Pointer to the char array to send (size should be content + 1 (xor)) ++ * @size: Size of the cmd char array ++ * @reply_data: Pointer to the reply/response data array (should be allocated) ++ * @reply_size: Pointer to size_t (size of reply_data) ++ * @retry_count: Number of times to retry sending the command to the MCU ++ */ ++int iei_wt61p803_puzzle_write_command_watchdog(struct iei_wt61p803_puzzle *mcu, ++ unsigned char *cmd, size_t size, ++ unsigned char *reply_data, ++ size_t *reply_size, int retry_count) ++{ ++ struct device *dev = &mcu->serdev->dev; ++ int ret, i; ++ ++ for (i = 0; i < retry_count; i++) { ++ ret = iei_wt61p803_puzzle_write_command(mcu, cmd, size, ++ reply_data, reply_size); ++ if (ret != -ETIMEDOUT) ++ return ret; ++ } ++ ++ dev_err(dev, "Command response timed out. Retries: %d\n", retry_count); ++ ++ return -ETIMEDOUT; ++} ++EXPORT_SYMBOL_GPL(iei_wt61p803_puzzle_write_command_watchdog); ++ ++/** ++ * iei_wt61p803_puzzle_write_command() - Send a structured command to the MCU ++ * @mcu: Pointer to the iei_wt61p803_puzzle core MFD struct ++ * @cmd: Pointer to the char array to send (size should be content + 1 (xor)) ++ * @size: Size of the cmd char array ++ * @reply_data: Pointer to the reply/response data array (should be allocated) ++ * ++ * Sends a structured command to the MCU. ++ */ ++int iei_wt61p803_puzzle_write_command(struct iei_wt61p803_puzzle *mcu, ++ unsigned char *cmd, size_t size, ++ unsigned char *reply_data, ++ size_t *reply_size) ++{ ++ struct device *dev = &mcu->serdev->dev; ++ int ret; ++ ++ if (size <= 1 || size > IEI_WT61P803_PUZZLE_MAX_COMMAND_LENGTH) ++ return -EINVAL; ++ ++ mutex_lock(&mcu->reply_lock); ++ ++ cmd[size - 1] = iei_wt61p803_puzzle_checksum(cmd, size - 1); ++ ++ /* Initialize reply struct */ ++ reinit_completion(&mcu->reply->received); ++ mcu->reply->size = 0; ++ usleep_range(2000, 10000); ++ serdev_device_write_flush(mcu->serdev); ++ ret = serdev_device_write_buf(mcu->serdev, cmd, size); ++ if (ret < 0) ++ goto exit; ++ ++ serdev_device_wait_until_sent(mcu->serdev, IEI_WT61P803_PUZZLE_GENERAL_TIMEOUT); ++ ret = wait_for_completion_timeout(&mcu->reply->received, ++ IEI_WT61P803_PUZZLE_GENERAL_TIMEOUT); ++ if (ret == 0) { ++ dev_err(dev, "Command reply receive timeout\n"); ++ ret = -ETIMEDOUT; ++ goto exit; ++ } ++ ++ *reply_size = mcu->reply->size; ++ /* Copy the received data, as it will not be available after a new frame is received */ ++ memcpy(reply_data, mcu->reply->data, mcu->reply->size); ++ ret = 0; ++exit: ++ mutex_unlock(&mcu->reply_lock); ++ return ret; ++} ++EXPORT_SYMBOL_GPL(iei_wt61p803_puzzle_write_command); ++ ++static int iei_wt61p803_puzzle_buzzer(struct iei_wt61p803_puzzle *mcu, bool long_beep) ++{ ++ unsigned char *resp_buf = mcu->response_buffer; ++ unsigned char buzzer_cmd[4] = {}; ++ size_t reply_size; ++ int ret; ++ ++ buzzer_cmd[0] = IEI_WT61P803_PUZZLE_CMD_HEADER_START; ++ buzzer_cmd[1] = IEI_WT61P803_PUZZLE_CMD_FUNCTION_SINGLE; ++ buzzer_cmd[2] = long_beep ? '3' : '2'; /* Buzzer 1.5 / 0.5 second beep */ ++ ++ mutex_lock(&mcu->lock); ++ ret = iei_wt61p803_puzzle_write_command(mcu, buzzer_cmd, sizeof(buzzer_cmd), ++ resp_buf, &reply_size); ++ if (ret) ++ goto exit; ++ ++ if (reply_size != 3) { ++ ret = -EIO; ++ goto exit; ++ } ++ ++ if (!(resp_buf[0] == IEI_WT61P803_PUZZLE_CMD_HEADER_START && ++ resp_buf[1] == IEI_WT61P803_PUZZLE_CMD_RESPONSE_OK && ++ resp_buf[2] == IEI_WT61P803_PUZZLE_CHECKSUM_RESPONSE_OK)) { ++ ret = -EPROTO; ++ goto exit; ++ } ++exit: ++ mutex_unlock(&mcu->lock); ++ return ret; ++} ++ ++static int iei_wt61p803_puzzle_get_version(struct iei_wt61p803_puzzle *mcu) ++{ ++ unsigned char version_cmd[3] = { ++ IEI_WT61P803_PUZZLE_CMD_HEADER_START_OTHER, ++ IEI_WT61P803_PUZZLE_CMD_OTHER_VERSION, ++ }; ++ unsigned char build_info_cmd[3] = { ++ IEI_WT61P803_PUZZLE_CMD_HEADER_START_OTHER, ++ IEI_WT61P803_PUZZLE_CMD_OTHER_BUILD, ++ }; ++ unsigned char bootloader_mode_cmd[3] = { ++ IEI_WT61P803_PUZZLE_CMD_HEADER_START_OTHER, ++ IEI_WT61P803_PUZZLE_CMD_OTHER_BOOTLOADER_MODE, ++ }; ++ unsigned char protocol_version_cmd[3] = { ++ IEI_WT61P803_PUZZLE_CMD_HEADER_START_OTHER, ++ IEI_WT61P803_PUZZLE_CMD_OTHER_PROTOCOL_VERSION, ++ }; ++ unsigned char *rb = mcu->response_buffer; ++ size_t reply_size; ++ int ret; ++ ++ mutex_lock(&mcu->lock); ++ ++ ret = iei_wt61p803_puzzle_write_command(mcu, version_cmd, sizeof(version_cmd), ++ rb, &reply_size); ++ if (ret) ++ goto err; ++ if (reply_size < 7) { ++ ret = -EIO; ++ goto err; ++ } ++ sprintf(mcu->version.version, "v%c.%.3s", rb[2], &rb[3]); ++ ++ ret = iei_wt61p803_puzzle_write_command(mcu, build_info_cmd, ++ sizeof(build_info_cmd), rb, ++ &reply_size); ++ if (ret) ++ goto err; ++ if (reply_size < 15) { ++ ret = -EIO; ++ goto err; ++ } ++ sprintf(mcu->version.build_info, "%c%c/%c%c/%.4s %c%c:%c%c", ++ rb[8], rb[9], rb[6], rb[7], &rb[2], rb[10], rb[11], ++ rb[12], rb[13]); ++ ++ ret = iei_wt61p803_puzzle_write_command(mcu, bootloader_mode_cmd, ++ sizeof(bootloader_mode_cmd), rb, ++ &reply_size); ++ if (ret) ++ goto err; ++ if (reply_size < 4) { ++ ret = -EIO; ++ goto err; ++ } ++ if (rb[2] == IEI_WT61P803_PUZZLE_CMD_OTHER_MODE_APPS) ++ mcu->version.bootloader_mode = false; ++ else if (rb[2] == IEI_WT61P803_PUZZLE_CMD_OTHER_MODE_BOOTLOADER) ++ mcu->version.bootloader_mode = true; ++ ++ ret = iei_wt61p803_puzzle_write_command(mcu, protocol_version_cmd, ++ sizeof(protocol_version_cmd), rb, ++ &reply_size); ++ if (ret) ++ goto err; ++ if (reply_size < 9) { ++ ret = -EIO; ++ goto err; ++ } ++ sprintf(mcu->version.protocol_version, "v%c.%c%c%c%c%c", ++ rb[7], rb[6], rb[5], rb[4], rb[3], rb[2]); ++err: ++ mutex_unlock(&mcu->lock); ++ return ret; ++} ++ ++static int iei_wt61p803_puzzle_get_mcu_status(struct iei_wt61p803_puzzle *mcu) ++{ ++ unsigned char mcu_status_cmd[5] = { ++ IEI_WT61P803_PUZZLE_CMD_HEADER_START, ++ IEI_WT61P803_PUZZLE_CMD_FUNCTION_OTHER, ++ IEI_WT61P803_PUZZLE_CMD_FUNCTION_OTHER_STATUS, ++ IEI_WT61P803_PUZZLE_CMD_FUNCTION_OTHER_STATUS, ++ }; ++ unsigned char *resp_buf = mcu->response_buffer; ++ size_t reply_size; ++ int ret; ++ ++ mutex_lock(&mcu->lock); ++ ret = iei_wt61p803_puzzle_write_command(mcu, mcu_status_cmd, sizeof(mcu_status_cmd), ++ resp_buf, &reply_size); ++ if (ret) ++ goto exit; ++ if (reply_size < 20) { ++ ret = -EIO; ++ goto exit; ++ } ++ ++ /* Response format: ++ * (IDX RESPONSE) ++ * 0 @ ++ * 1 O ++ * 2 S ++ * 3 S ++ * ... ++ * 5 AC Recovery Status Flag ++ * ... ++ * 10 Power Loss Recovery ++ * ... ++ * 19 Power Status (system power on method) ++ * 20 XOR checksum ++ */ ++ if (resp_buf[0] == IEI_WT61P803_PUZZLE_CMD_HEADER_START && ++ resp_buf[1] == IEI_WT61P803_PUZZLE_CMD_FUNCTION_OTHER && ++ resp_buf[2] == IEI_WT61P803_PUZZLE_CMD_FUNCTION_OTHER_STATUS && ++ resp_buf[3] == IEI_WT61P803_PUZZLE_CMD_FUNCTION_OTHER_STATUS) { ++ mcu->status.ac_recovery_status_flag = resp_buf[5]; ++ mcu->status.power_loss_recovery = resp_buf[10]; ++ mcu->status.power_status = resp_buf[19]; ++ } ++exit: ++ mutex_unlock(&mcu->lock); ++ return ret; ++} ++ ++static int iei_wt61p803_puzzle_get_serial_number(struct iei_wt61p803_puzzle *mcu) ++{ ++ unsigned char *resp_buf = mcu->response_buffer; ++ unsigned char serial_number_cmd[5] = { ++ IEI_WT61P803_PUZZLE_CMD_HEADER_EEPROM, ++ IEI_WT61P803_PUZZLE_CMD_EEPROM_READ, ++ 0x00, /* EEPROM read address */ ++ 0x24, /* Data length */ ++ }; ++ size_t reply_size; ++ int ret; ++ ++ mutex_lock(&mcu->lock); ++ ret = iei_wt61p803_puzzle_write_command(mcu, serial_number_cmd, ++ sizeof(serial_number_cmd), ++ resp_buf, &reply_size); ++ if (ret) ++ goto err; ++ ++ if (reply_size < IEI_WT61P803_PUZZLE_SN_LENGTH + 4) { ++ ret = -EIO; ++ goto err; ++ } ++ ++ sprintf(mcu->version.serial_number, "%.*s", ++ IEI_WT61P803_PUZZLE_SN_LENGTH, resp_buf + 4); ++err: ++ mutex_unlock(&mcu->lock); ++ return ret; ++} ++ ++static int iei_wt61p803_puzzle_write_serial_number(struct iei_wt61p803_puzzle *mcu, ++ unsigned char serial_number[36]) ++{ ++ unsigned char *resp_buf = mcu->response_buffer; ++ unsigned char serial_number_header[4] = { ++ IEI_WT61P803_PUZZLE_CMD_HEADER_EEPROM, ++ IEI_WT61P803_PUZZLE_CMD_EEPROM_WRITE, ++ 0x00, /* EEPROM write address */ ++ 0xC, /* Data length */ ++ }; ++ unsigned char serial_number_cmd[4 + 12 + 1]; /* header, serial number, XOR checksum */ ++ int ret, sn_counter; ++ size_t reply_size; ++ ++ /* The MCU can only handle 22 byte messages, send the S/N in 12 byte chunks */ ++ mutex_lock(&mcu->lock); ++ for (sn_counter = 0; sn_counter < 3; sn_counter++) { ++ serial_number_header[2] = 0x0 + 0xC * sn_counter; ++ ++ memcpy(serial_number_cmd, serial_number_header, sizeof(serial_number_header)); ++ memcpy(serial_number_cmd + sizeof(serial_number_header), ++ serial_number + 0xC * sn_counter, 0xC); ++ ++ ret = iei_wt61p803_puzzle_write_command(mcu, serial_number_cmd, ++ sizeof(serial_number_cmd), ++ resp_buf, &reply_size); ++ if (ret) ++ goto err; ++ if (reply_size != 3) { ++ ret = -EIO; ++ goto err; ++ } ++ if (!(resp_buf[0] == IEI_WT61P803_PUZZLE_CMD_HEADER_START && ++ resp_buf[1] == IEI_WT61P803_PUZZLE_CMD_RESPONSE_OK && ++ resp_buf[2] == IEI_WT61P803_PUZZLE_CHECKSUM_RESPONSE_OK)) { ++ ret = -EPROTO; ++ goto err; ++ } ++ } ++ ++ sprintf(mcu->version.serial_number, "%.*s", ++ IEI_WT61P803_PUZZLE_SN_LENGTH, serial_number); ++err: ++ mutex_unlock(&mcu->lock); ++ return ret; ++} ++ ++static int iei_wt61p803_puzzle_get_mac_address(struct iei_wt61p803_puzzle *mcu, int index) ++{ ++ unsigned char *resp_buf = mcu->response_buffer; ++ unsigned char mac_address_cmd[5] = { ++ IEI_WT61P803_PUZZLE_CMD_HEADER_EEPROM, ++ IEI_WT61P803_PUZZLE_CMD_EEPROM_READ, ++ 0x00, /* EEPROM read address */ ++ 0x11, /* Data length */ ++ }; ++ size_t reply_size; ++ int ret; ++ ++ mutex_lock(&mcu->lock); ++ mac_address_cmd[2] = 0x24 + 0x11 * index; ++ ++ ret = iei_wt61p803_puzzle_write_command(mcu, mac_address_cmd, ++ sizeof(mac_address_cmd), ++ resp_buf, &reply_size); ++ if (ret) ++ goto err; ++ ++ if (reply_size < 22) { ++ ret = -EIO; ++ goto err; ++ } ++ ++ sprintf(mcu->version.mac_address[index], "%.*s", ++ IEI_WT61P803_PUZZLE_MAC_LENGTH, resp_buf + 4); ++err: ++ mutex_unlock(&mcu->lock); ++ return ret; ++} ++ ++static int ++iei_wt61p803_puzzle_write_mac_address(struct iei_wt61p803_puzzle *mcu, ++ unsigned char mac_address[IEI_WT61P803_PUZZLE_MAC_LENGTH], ++ int mac_address_idx) ++{ ++ unsigned char mac_address_cmd[4 + IEI_WT61P803_PUZZLE_MAC_LENGTH + 1]; ++ unsigned char *resp_buf = mcu->response_buffer; ++ unsigned char mac_address_header[4] = { ++ IEI_WT61P803_PUZZLE_CMD_HEADER_EEPROM, ++ IEI_WT61P803_PUZZLE_CMD_EEPROM_WRITE, ++ 0x00, /* EEPROM write address */ ++ 0x11, /* Data length */ ++ }; ++ size_t reply_size; ++ int ret; ++ ++ if (mac_address_idx < 0 || mac_address_idx >= IEI_WT61P803_PUZZLE_NB_MAC) ++ return -EINVAL; ++ ++ mac_address_header[2] = 0x24 + 0x11 * mac_address_idx; ++ ++ /* Concat mac_address_header, mac_address to mac_address_cmd */ ++ memcpy(mac_address_cmd, mac_address_header, sizeof(mac_address_header)); ++ memcpy(mac_address_cmd + sizeof(mac_address_header), mac_address, ++ IEI_WT61P803_PUZZLE_MAC_LENGTH); ++ ++ mutex_lock(&mcu->lock); ++ ret = iei_wt61p803_puzzle_write_command(mcu, mac_address_cmd, ++ sizeof(mac_address_cmd), ++ resp_buf, &reply_size); ++ if (ret) ++ goto err; ++ if (reply_size != 3) { ++ ret = -EIO; ++ goto err; ++ } ++ if (!(resp_buf[0] == IEI_WT61P803_PUZZLE_CMD_HEADER_START && ++ resp_buf[1] == IEI_WT61P803_PUZZLE_CMD_RESPONSE_OK && ++ resp_buf[2] == IEI_WT61P803_PUZZLE_CHECKSUM_RESPONSE_OK)) { ++ ret = -EPROTO; ++ goto err; ++ } ++ ++ sprintf(mcu->version.mac_address[mac_address_idx], "%.*s", ++ IEI_WT61P803_PUZZLE_MAC_LENGTH, mac_address); ++err: ++ mutex_unlock(&mcu->lock); ++ return ret; ++} ++ ++static int iei_wt61p803_puzzle_write_power_loss_recovery(struct iei_wt61p803_puzzle *mcu, ++ int power_loss_recovery_action) ++{ ++ unsigned char *resp_buf = mcu->response_buffer; ++ unsigned char power_loss_recovery_cmd[5] = {}; ++ size_t reply_size; ++ int ret; ++ ++ if (power_loss_recovery_action < 0 || power_loss_recovery_action > 4) ++ return -EINVAL; ++ ++ power_loss_recovery_cmd[0] = IEI_WT61P803_PUZZLE_CMD_HEADER_START; ++ power_loss_recovery_cmd[1] = IEI_WT61P803_PUZZLE_CMD_FUNCTION_OTHER; ++ power_loss_recovery_cmd[2] = IEI_WT61P803_PUZZLE_CMD_FUNCTION_OTHER_POWER_LOSS; ++ power_loss_recovery_cmd[3] = hex_asc[power_loss_recovery_action]; ++ ++ mutex_lock(&mcu->lock); ++ ret = iei_wt61p803_puzzle_write_command(mcu, power_loss_recovery_cmd, ++ sizeof(power_loss_recovery_cmd), ++ resp_buf, &reply_size); ++ if (ret) ++ goto exit; ++ mcu->status.power_loss_recovery = power_loss_recovery_action; ++exit: ++ mutex_unlock(&mcu->lock); ++ return ret; ++} ++ ++#define to_puzzle_dev_attr(_attr) \ ++ container_of(_attr, struct iei_wt61p803_puzzle_device_attribute, dev_attr) ++ ++static ssize_t show_output(struct device *dev, ++ struct device_attribute *attr, char *buf) ++{ ++ struct iei_wt61p803_puzzle *mcu = dev_get_drvdata(dev); ++ struct iei_wt61p803_puzzle_device_attribute *pattr = to_puzzle_dev_attr(attr); ++ int ret; ++ ++ switch (pattr->type) { ++ case IEI_WT61P803_PUZZLE_VERSION: ++ return scnprintf(buf, PAGE_SIZE, "%s\n", mcu->version.version); ++ case IEI_WT61P803_PUZZLE_BUILD_INFO: ++ return scnprintf(buf, PAGE_SIZE, "%s\n", mcu->version.build_info); ++ case IEI_WT61P803_PUZZLE_BOOTLOADER_MODE: ++ return scnprintf(buf, PAGE_SIZE, "%d\n", mcu->version.bootloader_mode); ++ case IEI_WT61P803_PUZZLE_PROTOCOL_VERSION: ++ return scnprintf(buf, PAGE_SIZE, "%s\n", mcu->version.protocol_version); ++ case IEI_WT61P803_PUZZLE_SERIAL_NUMBER: ++ ret = iei_wt61p803_puzzle_get_serial_number(mcu); ++ if (!ret) ++ ret = scnprintf(buf, PAGE_SIZE, "%s\n", mcu->version.serial_number); ++ else ++ ret = 0; ++ return ret; ++ case IEI_WT61P803_PUZZLE_MAC_ADDRESS: ++ ret = iei_wt61p803_puzzle_get_mac_address(mcu, pattr->index); ++ if (!ret) ++ ret = scnprintf(buf, PAGE_SIZE, "%s\n", ++ mcu->version.mac_address[pattr->index]); ++ else ++ ret = 0; ++ return ret; ++ case IEI_WT61P803_PUZZLE_AC_RECOVERY_STATUS: ++ case IEI_WT61P803_PUZZLE_POWER_LOSS_RECOVERY: ++ case IEI_WT61P803_PUZZLE_POWER_STATUS: ++ ret = iei_wt61p803_puzzle_get_mcu_status(mcu); ++ if (ret) ++ return ret; ++ ++ mutex_lock(&mcu->lock); ++ switch (pattr->type) { ++ case IEI_WT61P803_PUZZLE_AC_RECOVERY_STATUS: ++ ret = scnprintf(buf, PAGE_SIZE, "%x\n", ++ mcu->status.ac_recovery_status_flag); ++ break; ++ case IEI_WT61P803_PUZZLE_POWER_LOSS_RECOVERY: ++ ret = scnprintf(buf, PAGE_SIZE, "%x\n", mcu->status.power_loss_recovery); ++ break; ++ case IEI_WT61P803_PUZZLE_POWER_STATUS: ++ ret = scnprintf(buf, PAGE_SIZE, "%x\n", mcu->status.power_status); ++ break; ++ default: ++ ret = 0; ++ break; ++ } ++ mutex_unlock(&mcu->lock); ++ return ret; ++ default: ++ return 0; ++ } ++ ++ return 0; ++} ++ ++static ssize_t store_output(struct device *dev, ++ struct device_attribute *attr, ++ const char *buf, size_t len) ++{ ++ unsigned char serial_number[IEI_WT61P803_PUZZLE_SN_LENGTH]; ++ unsigned char mac_address[IEI_WT61P803_PUZZLE_MAC_LENGTH]; ++ struct iei_wt61p803_puzzle *mcu = dev_get_drvdata(dev); ++ struct iei_wt61p803_puzzle_device_attribute *pattr = to_puzzle_dev_attr(attr); ++ int power_loss_recovery_action = 0; ++ int ret; ++ ++ switch (pattr->type) { ++ case IEI_WT61P803_PUZZLE_SERIAL_NUMBER: ++ if (len != (size_t)(IEI_WT61P803_PUZZLE_SN_LENGTH + 1)) ++ return -EINVAL; ++ memcpy(serial_number, buf, sizeof(serial_number)); ++ ret = iei_wt61p803_puzzle_write_serial_number(mcu, serial_number); ++ if (ret) ++ return ret; ++ return len; ++ case IEI_WT61P803_PUZZLE_MAC_ADDRESS: ++ if (len != (size_t)(IEI_WT61P803_PUZZLE_MAC_LENGTH + 1)) ++ return -EINVAL; ++ ++ memcpy(mac_address, buf, sizeof(mac_address)); ++ ++ if (strlen(attr->attr.name) != 13) ++ return -EIO; ++ ++ ret = iei_wt61p803_puzzle_write_mac_address(mcu, mac_address, pattr->index); ++ if (ret) ++ return ret; ++ return len; ++ case IEI_WT61P803_PUZZLE_POWER_LOSS_RECOVERY: ++ ret = kstrtoint(buf, 10, &power_loss_recovery_action); ++ if (ret) ++ return ret; ++ ret = iei_wt61p803_puzzle_write_power_loss_recovery(mcu, ++ power_loss_recovery_action); ++ if (ret) ++ return ret; ++ return len; ++ default: ++ return -EINVAL; ++ } ++ ++ return 0; ++} ++ ++#define IEI_WT61P803_PUZZLE_ATTR(_name, _mode, _show, _store, _type, _index) \ ++ struct iei_wt61p803_puzzle_device_attribute dev_attr_##_name = \ ++ { .dev_attr = __ATTR(_name, _mode, _show, _store), \ ++ .type = _type, \ ++ .index = _index } ++ ++#define IEI_WT61P803_PUZZLE_ATTR_RO(_name, _type, _id) \ ++ IEI_WT61P803_PUZZLE_ATTR(_name, 0444, show_output, NULL, _type, _id) ++ ++#define IEI_WT61P803_PUZZLE_ATTR_RW(_name, _type, _id) \ ++ IEI_WT61P803_PUZZLE_ATTR(_name, 0644, show_output, store_output, _type, _id) ++ ++static IEI_WT61P803_PUZZLE_ATTR_RO(version, IEI_WT61P803_PUZZLE_VERSION, 0); ++static IEI_WT61P803_PUZZLE_ATTR_RO(build_info, IEI_WT61P803_PUZZLE_BUILD_INFO, 0); ++static IEI_WT61P803_PUZZLE_ATTR_RO(bootloader_mode, IEI_WT61P803_PUZZLE_BOOTLOADER_MODE, 0); ++static IEI_WT61P803_PUZZLE_ATTR_RO(protocol_version, IEI_WT61P803_PUZZLE_PROTOCOL_VERSION, 0); ++static IEI_WT61P803_PUZZLE_ATTR_RW(serial_number, IEI_WT61P803_PUZZLE_SERIAL_NUMBER, 0); ++static IEI_WT61P803_PUZZLE_ATTR_RW(mac_address_0, IEI_WT61P803_PUZZLE_MAC_ADDRESS, 0); ++static IEI_WT61P803_PUZZLE_ATTR_RW(mac_address_1, IEI_WT61P803_PUZZLE_MAC_ADDRESS, 1); ++static IEI_WT61P803_PUZZLE_ATTR_RW(mac_address_2, IEI_WT61P803_PUZZLE_MAC_ADDRESS, 2); ++static IEI_WT61P803_PUZZLE_ATTR_RW(mac_address_3, IEI_WT61P803_PUZZLE_MAC_ADDRESS, 3); ++static IEI_WT61P803_PUZZLE_ATTR_RW(mac_address_4, IEI_WT61P803_PUZZLE_MAC_ADDRESS, 4); ++static IEI_WT61P803_PUZZLE_ATTR_RW(mac_address_5, IEI_WT61P803_PUZZLE_MAC_ADDRESS, 5); ++static IEI_WT61P803_PUZZLE_ATTR_RW(mac_address_6, IEI_WT61P803_PUZZLE_MAC_ADDRESS, 6); ++static IEI_WT61P803_PUZZLE_ATTR_RW(mac_address_7, IEI_WT61P803_PUZZLE_MAC_ADDRESS, 7); ++static IEI_WT61P803_PUZZLE_ATTR_RO(ac_recovery_status, IEI_WT61P803_PUZZLE_AC_RECOVERY_STATUS, 0); ++static IEI_WT61P803_PUZZLE_ATTR_RW(power_loss_recovery, IEI_WT61P803_PUZZLE_POWER_LOSS_RECOVERY, 0); ++static IEI_WT61P803_PUZZLE_ATTR_RO(power_status, IEI_WT61P803_PUZZLE_POWER_STATUS, 0); ++ ++static struct attribute *iei_wt61p803_puzzle_attrs[] = { ++ &dev_attr_version.dev_attr.attr, ++ &dev_attr_build_info.dev_attr.attr, ++ &dev_attr_bootloader_mode.dev_attr.attr, ++ &dev_attr_protocol_version.dev_attr.attr, ++ &dev_attr_serial_number.dev_attr.attr, ++ &dev_attr_mac_address_0.dev_attr.attr, ++ &dev_attr_mac_address_1.dev_attr.attr, ++ &dev_attr_mac_address_2.dev_attr.attr, ++ &dev_attr_mac_address_3.dev_attr.attr, ++ &dev_attr_mac_address_4.dev_attr.attr, ++ &dev_attr_mac_address_5.dev_attr.attr, ++ &dev_attr_mac_address_6.dev_attr.attr, ++ &dev_attr_mac_address_7.dev_attr.attr, ++ &dev_attr_ac_recovery_status.dev_attr.attr, ++ &dev_attr_power_loss_recovery.dev_attr.attr, ++ &dev_attr_power_status.dev_attr.attr, ++ NULL ++}; ++ATTRIBUTE_GROUPS(iei_wt61p803_puzzle); ++ ++static int iei_wt61p803_puzzle_sysfs_create(struct device *dev, ++ struct iei_wt61p803_puzzle *mcu) ++{ ++ int ret; ++ ++ ret = sysfs_create_groups(&mcu->dev->kobj, iei_wt61p803_puzzle_groups); ++ if (ret) ++ mfd_remove_devices(mcu->dev); ++ ++ return ret; ++} ++ ++static int iei_wt61p803_puzzle_sysfs_remove(struct device *dev, ++ struct iei_wt61p803_puzzle *mcu) ++{ ++ /* Remove sysfs groups */ ++ sysfs_remove_groups(&mcu->dev->kobj, iei_wt61p803_puzzle_groups); ++ mfd_remove_devices(mcu->dev); ++ ++ return 0; ++} ++ ++static int iei_wt61p803_puzzle_probe(struct serdev_device *serdev) ++{ ++ struct device *dev = &serdev->dev; ++ struct iei_wt61p803_puzzle *mcu; ++ u32 baud; ++ int ret; ++ ++ /* Read the baud rate from 'current-speed', because the MCU supports different rates */ ++ if (device_property_read_u32(dev, "current-speed", &baud)) { ++ dev_err(dev, ++ "'current-speed' is not specified in device node\n"); ++ return -EINVAL; ++ } ++ dev_dbg(dev, "Driver baud rate: %d\n", baud); ++ ++ /* Allocate the memory */ ++ mcu = devm_kzalloc(dev, sizeof(*mcu), GFP_KERNEL); ++ if (!mcu) ++ return -ENOMEM; ++ ++ mcu->reply = devm_kzalloc(dev, sizeof(*mcu->reply), GFP_KERNEL); ++ if (!mcu->reply) ++ return -ENOMEM; ++ ++ /* Initialize device struct data */ ++ mcu->serdev = serdev; ++ mcu->dev = dev; ++ init_completion(&mcu->reply->received); ++ mutex_init(&mcu->reply_lock); ++ mutex_init(&mcu->lock); ++ ++ /* Setup UART interface */ ++ serdev_device_set_drvdata(serdev, mcu); ++ serdev_device_set_client_ops(serdev, &iei_wt61p803_puzzle_serdev_device_ops); ++ ret = devm_serdev_device_open(dev, serdev); ++ if (ret) ++ return ret; ++ serdev_device_set_baudrate(serdev, baud); ++ serdev_device_set_flow_control(serdev, false); ++ ret = serdev_device_set_parity(serdev, SERDEV_PARITY_NONE); ++ if (ret) { ++ dev_err(dev, "Failed to set parity\n"); ++ return ret; ++ } ++ ++ ret = iei_wt61p803_puzzle_get_version(mcu); ++ if (ret) ++ return ret; ++ ++ dev_dbg(dev, "MCU version: %s\n", mcu->version.version); ++ dev_dbg(dev, "MCU firmware build info: %s\n", mcu->version.build_info); ++ dev_dbg(dev, "MCU in bootloader mode: %s\n", ++ mcu->version.bootloader_mode ? "true" : "false"); ++ dev_dbg(dev, "MCU protocol version: %s\n", mcu->version.protocol_version); ++ ++ if (device_property_read_bool(dev, "enable-beep")) { ++ ret = iei_wt61p803_puzzle_buzzer(mcu, false); ++ if (ret) ++ return ret; ++ } ++ ++ ret = iei_wt61p803_puzzle_sysfs_create(dev, mcu); ++ if (ret) ++ return ret; ++ ++ return devm_of_platform_populate(dev); ++} ++ ++static void iei_wt61p803_puzzle_remove(struct serdev_device *serdev) ++{ ++ struct device *dev = &serdev->dev; ++ struct iei_wt61p803_puzzle *mcu = dev_get_drvdata(dev); ++ ++ iei_wt61p803_puzzle_sysfs_remove(dev, mcu); ++} ++ ++static const struct of_device_id iei_wt61p803_puzzle_dt_ids[] = { ++ { .compatible = "iei,wt61p803-puzzle" }, ++ { } ++}; ++ ++MODULE_DEVICE_TABLE(of, iei_wt61p803_puzzle_dt_ids); ++ ++static struct serdev_device_driver iei_wt61p803_puzzle_drv = { ++ .probe = iei_wt61p803_puzzle_probe, ++ .remove = iei_wt61p803_puzzle_remove, ++ .driver = { ++ .name = "iei-wt61p803-puzzle", ++ .of_match_table = iei_wt61p803_puzzle_dt_ids, ++ }, ++}; ++ ++module_serdev_device_driver(iei_wt61p803_puzzle_drv); ++ ++MODULE_LICENSE("GPL v2"); ++MODULE_AUTHOR("Luka Kovacic <luka.kovacic@sartura.hr>"); ++MODULE_DESCRIPTION("IEI WT61P803 PUZZLE MCU Driver"); +--- /dev/null ++++ b/include/linux/mfd/iei-wt61p803-puzzle.h +@@ -0,0 +1,66 @@ ++/* SPDX-License-Identifier: GPL-2.0-only */ ++/* IEI WT61P803 PUZZLE MCU Driver ++ * System management microcontroller for fan control, temperature sensor reading, ++ * LED control and system identification on IEI Puzzle series ARM-based appliances. ++ * ++ * Copyright (C) 2020 Sartura Ltd. ++ * Author: Luka Kovacic <luka.kovacic@sartura.hr> ++ */ ++ ++#ifndef _MFD_IEI_WT61P803_PUZZLE_H_ ++#define _MFD_IEI_WT61P803_PUZZLE_H_ ++ ++#define IEI_WT61P803_PUZZLE_BUF_SIZE 512 ++ ++/* Command magic numbers */ ++#define IEI_WT61P803_PUZZLE_CMD_HEADER_START 0x40 /* @ */ ++#define IEI_WT61P803_PUZZLE_CMD_HEADER_START_OTHER 0x25 /* % */ ++#define IEI_WT61P803_PUZZLE_CMD_HEADER_EEPROM 0xF7 ++ ++#define IEI_WT61P803_PUZZLE_CMD_RESPONSE_OK 0x30 /* 0 */ ++#define IEI_WT61P803_PUZZLE_CHECKSUM_RESPONSE_OK 0x70 ++ ++#define IEI_WT61P803_PUZZLE_CMD_EEPROM_READ 0xA1 ++#define IEI_WT61P803_PUZZLE_CMD_EEPROM_WRITE 0xA0 ++ ++#define IEI_WT61P803_PUZZLE_CMD_OTHER_VERSION 0x56 /* V */ ++#define IEI_WT61P803_PUZZLE_CMD_OTHER_BUILD 0x42 /* B */ ++#define IEI_WT61P803_PUZZLE_CMD_OTHER_BOOTLOADER_MODE 0x4D /* M */ ++#define IEI_WT61P803_PUZZLE_CMD_OTHER_MODE_BOOTLOADER 0x30 ++#define IEI_WT61P803_PUZZLE_CMD_OTHER_MODE_APPS 0x31 ++#define IEI_WT61P803_PUZZLE_CMD_OTHER_PROTOCOL_VERSION 0x50 /* P */ ++ ++#define IEI_WT61P803_PUZZLE_CMD_FUNCTION_SINGLE 0x43 /* C */ ++#define IEI_WT61P803_PUZZLE_CMD_FUNCTION_OTHER 0x4F /* O */ ++#define IEI_WT61P803_PUZZLE_CMD_FUNCTION_OTHER_STATUS 0x53 /* S */ ++#define IEI_WT61P803_PUZZLE_CMD_FUNCTION_OTHER_POWER_LOSS 0x41 /* A */ ++ ++#define IEI_WT61P803_PUZZLE_CMD_LED 0x52 /* R */ ++#define IEI_WT61P803_PUZZLE_CMD_LED_POWER 0x31 /* 1 */ ++ ++#define IEI_WT61P803_PUZZLE_CMD_TEMP 0x54 /* T */ ++#define IEI_WT61P803_PUZZLE_CMD_TEMP_ALL 0x41 /* A */ ++ ++#define IEI_WT61P803_PUZZLE_CMD_FAN 0x46 /* F */ ++#define IEI_WT61P803_PUZZLE_CMD_FAN_PWM_READ 0x5A /* Z */ ++#define IEI_WT61P803_PUZZLE_CMD_FAN_PWM_WRITE 0x57 /* W */ ++#define IEI_WT61P803_PUZZLE_CMD_FAN_PWM_BASE 0x30 ++#define IEI_WT61P803_PUZZLE_CMD_FAN_RPM_BASE 0x41 /* A */ ++ ++#define IEI_WT61P803_PUZZLE_CMD_FAN_PWM(x) (IEI_WT61P803_PUZZLE_CMD_FAN_PWM_BASE + (x)) /* 0 - 1 */ ++#define IEI_WT61P803_PUZZLE_CMD_FAN_RPM(x) (IEI_WT61P803_PUZZLE_CMD_FAN_RPM_BASE + (x)) /* 0 - 5 */ ++ ++struct iei_wt61p803_puzzle_mcu_version; ++struct iei_wt61p803_puzzle_reply; ++struct iei_wt61p803_puzzle; ++ ++int iei_wt61p803_puzzle_write_command_watchdog(struct iei_wt61p803_puzzle *mcu, ++ unsigned char *cmd, size_t size, ++ unsigned char *reply_data, size_t *reply_size, ++ int retry_count); ++ ++int iei_wt61p803_puzzle_write_command(struct iei_wt61p803_puzzle *mcu, ++ unsigned char *cmd, size_t size, ++ unsigned char *reply_data, size_t *reply_size); ++ ++#endif /* _MFD_IEI_WT61P803_PUZZLE_H_ */ |