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| author | Daniel Golle <daniel@makrotopia.org> | 2021-12-21 16:27:16 +0000 |
|---|---|---|
| committer | Daniel Golle <daniel@makrotopia.org> | 2022-01-01 22:29:33 +0000 |
| commit | 99a1e882970f02d3713b3d67022af012b782a5f4 (patch) | |
| tree | b9f4069b18d31c823e9a16cc280a71c7245a0516 /target/linux/mvebu/patches-5.4 | |
| parent | 3b14ddf8d204ee59533ec76ed6018db01f77d6e7 (diff) | |
| download | upstream-99a1e882970f02d3713b3d67022af012b782a5f4.tar.gz upstream-99a1e882970f02d3713b3d67022af012b782a5f4.tar.bz2 upstream-99a1e882970f02d3713b3d67022af012b782a5f4.zip | |
mvebu: puzzle-m902: add driver for MCU driving LEDs, fan and buzzer
Backport MFD driver for communicating with the on-board MCU found on
IEI World Puzzle appliances.
Improve the driver to support multiple LEDs, apply a default state and
let MCU take care of blinking if timing is within supported range.
Wire up LEDs and fan for Puzzle M902 in device tree.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit f0c0b18234418c6ed6d35fcf1c6e5b0cbdceed49
with commit 962c58558010bd302793ac24284c4f9db8fe287f squashed)
Diffstat (limited to 'target/linux/mvebu/patches-5.4')
8 files changed, 2372 insertions, 0 deletions
diff --git a/target/linux/mvebu/patches-5.4/901-dt-bindings-Add-IEI-vendor-prefix-and-IEI-WT61P803-P.patch b/target/linux/mvebu/patches-5.4/901-dt-bindings-Add-IEI-vendor-prefix-and-IEI-WT61P803-P.patch new file mode 100644 index 0000000000..fb9ea43e4b --- /dev/null +++ b/target/linux/mvebu/patches-5.4/901-dt-bindings-Add-IEI-vendor-prefix-and-IEI-WT61P803-P.patch @@ -0,0 +1,218 @@ +From aa4a0ccc41997f2da172165c92803abace43bd1c Mon Sep 17 00:00:00 2001 +From: Luka Kovacic <luka.kovacic () sartura ! hr> +Date: Tue, 24 Aug 2021 12:44:32 +0000 +Subject: [PATCH 1/7] dt-bindings: Add IEI vendor prefix and IEI WT61P803 + PUZZLE driver bindings + +Add the IEI WT61P803 PUZZLE Device Tree bindings for MFD, HWMON and LED +drivers. A new vendor prefix is also added accordingly for +IEI Integration Corp. + +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> +--- + .../hwmon/iei,wt61p803-puzzle-hwmon.yaml | 53 ++++++++++++ + .../leds/iei,wt61p803-puzzle-leds.yaml | 39 +++++++++ + .../bindings/mfd/iei,wt61p803-puzzle.yaml | 82 +++++++++++++++++++ + .../devicetree/bindings/vendor-prefixes.yaml | 2 + + 4 files changed, 176 insertions(+) + create mode 100644 Documentation/devicetree/bindings/hwmon/iei,wt61p803-puzzle-hwmon.yaml + create mode 100644 Documentation/devicetree/bindings/leds/iei,wt61p803-puzzle-leds.yaml + create mode 100644 Documentation/devicetree/bindings/mfd/iei,wt61p803-puzzle.yaml + +--- /dev/null ++++ b/Documentation/devicetree/bindings/hwmon/iei,wt61p803-puzzle-hwmon.yaml +@@ -0,0 +1,53 @@ ++# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause ++%YAML 1.2 ++--- ++$id: http://devicetree.org/schemas/hwmon/iei,wt61p803-puzzle-hwmon.yaml# ++$schema: http://devicetree.org/meta-schemas/core.yaml# ++ ++title: IEI WT61P803 PUZZLE MCU HWMON module from IEI Integration Corp. ++ ++maintainers: ++ - Luka Kovacic <luka.kovacic@sartura.hr> ++ ++description: | ++ This module is a part of the IEI WT61P803 PUZZLE MFD device. For more details ++ see Documentation/devicetree/bindings/mfd/iei,wt61p803-puzzle.yaml. ++ ++ The HWMON module is a sub-node of the MCU node in the Device Tree. ++ ++properties: ++ compatible: ++ const: iei,wt61p803-puzzle-hwmon ++ ++ "#address-cells": ++ const: 1 ++ ++ "#size-cells": ++ const: 0 ++ ++patternProperties: ++ "^fan-group@[0-1]$": ++ type: object ++ properties: ++ reg: ++ minimum: 0 ++ maximum: 1 ++ description: ++ Fan group ID ++ ++ cooling-levels: ++ minItems: 1 ++ maxItems: 255 ++ description: ++ Cooling levels for the fans (PWM value mapping) ++ description: | ++ Properties for each fan group. ++ required: ++ - reg ++ ++required: ++ - compatible ++ - "#address-cells" ++ - "#size-cells" ++ ++additionalProperties: false +--- /dev/null ++++ b/Documentation/devicetree/bindings/leds/iei,wt61p803-puzzle-leds.yaml +@@ -0,0 +1,39 @@ ++# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause ++%YAML 1.2 ++--- ++$id: http://devicetree.org/schemas/leds/iei,wt61p803-puzzle-leds.yaml# ++$schema: http://devicetree.org/meta-schemas/core.yaml# ++ ++title: IEI WT61P803 PUZZLE MCU LED module from IEI Integration Corp. ++ ++maintainers: ++ - Luka Kovacic <luka.kovacic@sartura.hr> ++ ++description: | ++ This module is a part of the IEI WT61P803 PUZZLE MFD device. For more details ++ see Documentation/devicetree/bindings/mfd/iei,wt61p803-puzzle.yaml. ++ ++ The LED module is a sub-node of the MCU node in the Device Tree. ++ ++properties: ++ compatible: ++ const: iei,wt61p803-puzzle-leds ++ ++ "#address-cells": ++ const: 1 ++ ++ "#size-cells": ++ const: 0 ++ ++ led@0: ++ type: object ++ $ref: common.yaml ++ description: | ++ Properties for a single LED. ++ ++required: ++ - compatible ++ - "#address-cells" ++ - "#size-cells" ++ ++additionalProperties: false +--- /dev/null ++++ b/Documentation/devicetree/bindings/mfd/iei,wt61p803-puzzle.yaml +@@ -0,0 +1,82 @@ ++# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause ++%YAML 1.2 ++--- ++$id: http://devicetree.org/schemas/mfd/iei,wt61p803-puzzle.yaml# ++$schema: http://devicetree.org/meta-schemas/core.yaml# ++ ++title: IEI WT61P803 PUZZLE MCU from IEI Integration Corp. ++ ++maintainers: ++ - Luka Kovacic <luka.kovacic@sartura.hr> ++ ++description: | ++ IEI WT61P803 PUZZLE MCU is embedded in some IEI Puzzle series boards. ++ It's used for controlling system power states, fans, LEDs and temperature ++ sensors. ++ ++ For Device Tree bindings of other sub-modules (HWMON, LEDs) refer to the ++ binding documents under the respective subsystem directories. ++ ++properties: ++ compatible: ++ const: iei,wt61p803-puzzle ++ ++ current-speed: ++ description: ++ Serial bus speed in bps ++ maxItems: 1 ++ ++ enable-beep: true ++ ++ hwmon: ++ $ref: /schemas/hwmon/iei,wt61p803-puzzle-hwmon.yaml ++ ++ leds: ++ $ref: /schemas/leds/iei,wt61p803-puzzle-leds.yaml ++ ++required: ++ - compatible ++ - current-speed ++ ++additionalProperties: false ++ ++examples: ++ - | ++ #include <dt-bindings/leds/common.h> ++ serial { ++ mcu { ++ compatible = "iei,wt61p803-puzzle"; ++ current-speed = <115200>; ++ enable-beep; ++ ++ leds { ++ compatible = "iei,wt61p803-puzzle-leds"; ++ #address-cells = <1>; ++ #size-cells = <0>; ++ ++ led@0 { ++ reg = <0>; ++ function = LED_FUNCTION_POWER; ++ color = <LED_COLOR_ID_BLUE>; ++ }; ++ }; ++ ++ hwmon { ++ compatible = "iei,wt61p803-puzzle-hwmon"; ++ #address-cells = <1>; ++ #size-cells = <0>; ++ ++ fan-group@0 { ++ #cooling-cells = <2>; ++ reg = <0x00>; ++ cooling-levels = <64 102 170 230 250>; ++ }; ++ ++ fan-group@1 { ++ #cooling-cells = <2>; ++ reg = <0x01>; ++ cooling-levels = <64 102 170 230 250>; ++ }; ++ }; ++ }; ++ }; +--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml ++++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml +@@ -423,6 +423,8 @@ patternProperties: + description: IC Plus Corp. + "^idt,.*": + description: Integrated Device Technologies, Inc. ++ "^iei,.*": ++ description: IEI Integration Corp. + "^ifi,.*": + description: Ingenieurburo Fur Ic-Technologie (I/F/I) + "^ilitek,.*": diff --git a/target/linux/mvebu/patches-5.4/902-drivers-mfd-Add-a-driver-for-IEI-WT61P803-PUZZLE-MCU.patch b/target/linux/mvebu/patches-5.4/902-drivers-mfd-Add-a-driver-for-IEI-WT61P803-PUZZLE-MCU.patch new file mode 100644 index 0000000000..194feee569 --- /dev/null +++ b/target/linux/mvebu/patches-5.4/902-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 +@@ -531,6 +531,15 @@ config LPC_SCH + LPC bridge function of the Intel SCH provides support for + System Management Bus and General Purpose I/O. + ++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 INTEL_SOC_PMIC + bool "Support for Crystal Cove PMIC" + depends on ACPI && HAS_IOMEM && I2C=y && GPIOLIB && COMMON_CLK +--- a/drivers/mfd/Makefile ++++ b/drivers/mfd/Makefile +@@ -232,6 +232,7 @@ obj-$(CONFIG_MFD_HI655X_PMIC) += hi655 + obj-$(CONFIG_MFD_DLN2) += dln2.o + obj-$(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_ */ diff --git a/target/linux/mvebu/patches-5.4/903-drivers-hwmon-Add-the-IEI-WT61P803-PUZZLE-HWMON-driv.patch b/target/linux/mvebu/patches-5.4/903-drivers-hwmon-Add-the-IEI-WT61P803-PUZZLE-HWMON-driv.patch new file mode 100644 index 0000000000..550ce6387a --- /dev/null +++ b/target/linux/mvebu/patches-5.4/903-drivers-hwmon-Add-the-IEI-WT61P803-PUZZLE-HWMON-driv.patch @@ -0,0 +1,469 @@ +From e3310a638cd310bfd93dbbc6d2732ab6aea18dd2 Mon Sep 17 00:00:00 2001 +From: Luka Kovacic <luka.kovacic () sartura ! hr> +Date: Tue, 24 Aug 2021 12:44:34 +0000 +Subject: [PATCH 3/7] drivers: hwmon: Add the IEI WT61P803 PUZZLE HWMON driver + +Add the IEI WT61P803 PUZZLE HWMON driver, that handles the fan speed +control via PWM, reading fan speed and reading on-board temperature +sensors. + +The driver registers a HWMON device and a simple thermal cooling device to +enable in-kernel fan management. + +This driver depends on the IEI WT61P803 PUZZLE MFD driver. + +Signed-off-by: Luka Kovacic <luka.kovacic@sartura.hr> +Signed-off-by: Pavo Banicevic <pavo.banicevic@sartura.hr> +Acked-by: Guenter Roeck <linux@roeck-us.net> +Cc: Luka Perkov <luka.perkov@sartura.hr> +Cc: Robert Marko <robert.marko@sartura.hr> +--- + drivers/hwmon/Kconfig | 8 + + drivers/hwmon/Makefile | 1 + + drivers/hwmon/iei-wt61p803-puzzle-hwmon.c | 413 ++++++++++++++++++++++ + 3 files changed, 422 insertions(+) + create mode 100644 drivers/hwmon/iei-wt61p803-puzzle-hwmon.c + +--- a/drivers/hwmon/Kconfig ++++ b/drivers/hwmon/Kconfig +@@ -639,6 +639,14 @@ config SENSORS_IBMPOWERNV + This driver can also be built as a module. If so, the module + will be called ibmpowernv. + ++config SENSORS_IEI_WT61P803_PUZZLE_HWMON ++ tristate "IEI WT61P803 PUZZLE MFD HWMON Driver" ++ depends on MFD_IEI_WT61P803_PUZZLE ++ help ++ The IEI WT61P803 PUZZLE MFD HWMON Driver handles reading fan speed ++ and writing fan PWM values. It also supports reading on-board ++ temperature sensors. ++ + config SENSORS_IIO_HWMON + tristate "Hwmon driver that uses channels specified via iio maps" + depends on IIO +--- a/drivers/hwmon/Makefile ++++ b/drivers/hwmon/Makefile +@@ -77,6 +77,7 @@ obj-$(CONFIG_SENSORS_HIH6130) += hih6130 + obj-$(CONFIG_SENSORS_ULTRA45) += ultra45_env.o + obj-$(CONFIG_SENSORS_I5500) += i5500_temp.o + obj-$(CONFIG_SENSORS_I5K_AMB) += i5k_amb.o ++obj-$(CONFIG_SENSORS_IEI_WT61P803_PUZZLE_HWMON) += iei-wt61p803-puzzle-hwmon.o + obj-$(CONFIG_SENSORS_IBMAEM) += ibmaem.o + obj-$(CONFIG_SENSORS_IBMPEX) += ibmpex.o + obj-$(CONFIG_SENSORS_IBMPOWERNV)+= ibmpowernv.o +--- /dev/null ++++ b/drivers/hwmon/iei-wt61p803-puzzle-hwmon.c +@@ -0,0 +1,413 @@ ++// SPDX-License-Identifier: GPL-2.0-only ++/* IEI WT61P803 PUZZLE MCU HWMON Driver ++ * ++ * Copyright (C) 2020 Sartura Ltd. ++ * Author: Luka Kovacic <luka.kovacic@sartura.hr> ++ */ ++ ++#include <linux/err.h> ++#include <linux/hwmon.h> ++#include <linux/interrupt.h> ++#include <linux/irq.h> ++#include <linux/math64.h> ++#include <linux/mfd/iei-wt61p803-puzzle.h> ++#include <linux/mod_devicetable.h> ++#include <linux/module.h> ++#include <linux/platform_device.h> ++#include <linux/property.h> ++#include <linux/slab.h> ++#include <linux/thermal.h> ++ ++#define IEI_WT61P803_PUZZLE_HWMON_MAX_PWM 2 ++#define IEI_WT61P803_PUZZLE_HWMON_MAX_PWM_VAL 255 ++ ++/** ++ * struct iei_wt61p803_puzzle_thermal_cooling_device - Thermal cooling device instance ++ * @mcu_hwmon: Parent driver struct pointer ++ * @tcdev: Thermal cooling device pointer ++ * @name: Thermal cooling device name ++ * @pwm_channel: Controlled PWM channel (0 or 1) ++ * @cooling_levels: Thermal cooling device cooling levels (DT) ++ */ ++struct iei_wt61p803_puzzle_thermal_cooling_device { ++ struct iei_wt61p803_puzzle_hwmon *mcu_hwmon; ++ struct thermal_cooling_device *tcdev; ++ char name[THERMAL_NAME_LENGTH]; ++ int pwm_channel; ++ u8 *cooling_levels; ++}; ++ ++/** ++ * struct iei_wt61p803_puzzle_hwmon - MCU HWMON Driver ++ * @mcu: MCU struct pointer ++ * @response_buffer Global MCU response buffer ++ * @thermal_cooling_dev_present: Per-channel thermal cooling device control indicator ++ * @cdev: Per-channel thermal cooling device private structure ++ */ ++struct iei_wt61p803_puzzle_hwmon { ++ struct iei_wt61p803_puzzle *mcu; ++ unsigned char response_buffer[IEI_WT61P803_PUZZLE_BUF_SIZE]; ++ bool thermal_cooling_dev_present[IEI_WT61P803_PUZZLE_HWMON_MAX_PWM]; ++ struct iei_wt61p803_puzzle_thermal_cooling_device ++ *cdev[IEI_WT61P803_PUZZLE_HWMON_MAX_PWM]; ++ struct mutex lock; /* mutex to protect response_buffer array */ ++}; ++ ++#define raw_temp_to_milidegree_celsius(x) (((x) - 0x80) * 1000) ++static int iei_wt61p803_puzzle_read_temp_sensor(struct iei_wt61p803_puzzle_hwmon *mcu_hwmon, ++ int channel, long *value) ++{ ++ unsigned char *resp_buf = mcu_hwmon->response_buffer; ++ unsigned char temp_sensor_ntc_cmd[4] = { ++ IEI_WT61P803_PUZZLE_CMD_HEADER_START, ++ IEI_WT61P803_PUZZLE_CMD_TEMP, ++ IEI_WT61P803_PUZZLE_CMD_TEMP_ALL, ++ }; ++ size_t reply_size; ++ int ret; ++ ++ mutex_lock(&mcu_hwmon->lock); ++ ret = iei_wt61p803_puzzle_write_command(mcu_hwmon->mcu, temp_sensor_ntc_cmd, ++ sizeof(temp_sensor_ntc_cmd), resp_buf, ++ &reply_size); ++ if (ret) ++ goto exit; ++ ++ if (reply_size != 7) { ++ ret = -EIO; ++ goto exit; ++ } ++ ++ /* Check the number of NTC values */ ++ if (resp_buf[3] != '2') { ++ ret = -EIO; ++ goto exit; ++ } ++ ++ *value = raw_temp_to_milidegree_celsius(resp_buf[4 + channel]); ++exit: ++ mutex_unlock(&mcu_hwmon->lock); ++ return ret; ++} ++ ++#define raw_fan_val_to_rpm(x, y) ((((x) << 8 | (y)) / 2) * 60) ++static int iei_wt61p803_puzzle_read_fan_speed(struct iei_wt61p803_puzzle_hwmon *mcu_hwmon, ++ int channel, long *value) ++{ ++ unsigned char *resp_buf = mcu_hwmon->response_buffer; ++ unsigned char fan_speed_cmd[4] = {}; ++ size_t reply_size; ++ int ret; ++ ++ fan_speed_cmd[0] = IEI_WT61P803_PUZZLE_CMD_HEADER_START; ++ fan_speed_cmd[1] = IEI_WT61P803_PUZZLE_CMD_FAN; ++ fan_speed_cmd[2] = IEI_WT61P803_PUZZLE_CMD_FAN_RPM(channel); ++ ++ mutex_lock(&mcu_hwmon->lock); ++ ret = iei_wt61p803_puzzle_write_command(mcu_hwmon->mcu, fan_speed_cmd, ++ sizeof(fan_speed_cmd), resp_buf, ++ &reply_size); ++ if (ret) ++ goto exit; ++ ++ if (reply_size != 7) { ++ ret = -EIO; ++ goto exit; ++ } ++ ++ *value = raw_fan_val_to_rpm(resp_buf[3], resp_buf[4]); ++exit: ++ mutex_unlock(&mcu_hwmon->lock); ++ return ret; ++} ++ ++static int iei_wt61p803_puzzle_write_pwm_channel(struct iei_wt61p803_puzzle_hwmon *mcu_hwmon, ++ int channel, long pwm_set_val) ++{ ++ unsigned char *resp_buf = mcu_hwmon->response_buffer; ++ unsigned char pwm_set_cmd[6] = {}; ++ size_t reply_size; ++ int ret; ++ ++ pwm_set_cmd[0] = IEI_WT61P803_PUZZLE_CMD_HEADER_START; ++ pwm_set_cmd[1] = IEI_WT61P803_PUZZLE_CMD_FAN; ++ pwm_set_cmd[2] = IEI_WT61P803_PUZZLE_CMD_FAN_PWM_WRITE; ++ pwm_set_cmd[3] = IEI_WT61P803_PUZZLE_CMD_FAN_PWM(channel); ++ pwm_set_cmd[4] = pwm_set_val; ++ ++ mutex_lock(&mcu_hwmon->lock); ++ ret = iei_wt61p803_puzzle_write_command(mcu_hwmon->mcu, pwm_set_cmd, ++ sizeof(pwm_set_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 = -EIO; ++ goto exit; ++ } ++exit: ++ mutex_unlock(&mcu_hwmon->lock); ++ return ret; ++} ++ ++static int iei_wt61p803_puzzle_read_pwm_channel(struct iei_wt61p803_puzzle_hwmon *mcu_hwmon, ++ int channel, long *value) ++{ ++ unsigned char *resp_buf = mcu_hwmon->response_buffer; ++ unsigned char pwm_get_cmd[5] = {}; ++ size_t reply_size; ++ int ret; ++ ++ pwm_get_cmd[0] = IEI_WT61P803_PUZZLE_CMD_HEADER_START; ++ pwm_get_cmd[1] = IEI_WT61P803_PUZZLE_CMD_FAN; ++ pwm_get_cmd[2] = IEI_WT61P803_PUZZLE_CMD_FAN_PWM_READ; ++ pwm_get_cmd[3] = IEI_WT61P803_PUZZLE_CMD_FAN_PWM(channel); ++ ++ ret = iei_wt61p803_puzzle_write_command(mcu_hwmon->mcu, pwm_get_cmd, ++ sizeof(pwm_get_cmd), resp_buf, ++ &reply_size); ++ if (ret) ++ return ret; ++ ++ if (reply_size != 5) ++ return -EIO; ++ ++ if (resp_buf[2] != IEI_WT61P803_PUZZLE_CMD_FAN_PWM_READ) ++ return -EIO; ++ ++ *value = resp_buf[3]; ++ ++ return 0; ++} ++ ++static int iei_wt61p803_puzzle_read(struct device *dev, enum hwmon_sensor_types type, ++ u32 attr, int channel, long *val) ++{ ++ struct iei_wt61p803_puzzle_hwmon *mcu_hwmon = dev_get_drvdata(dev->parent); ++ ++ switch (type) { ++ case hwmon_pwm: ++ return iei_wt61p803_puzzle_read_pwm_channel(mcu_hwmon, channel, val); ++ case hwmon_fan: ++ return iei_wt61p803_puzzle_read_fan_speed(mcu_hwmon, channel, val); ++ case hwmon_temp: ++ return iei_wt61p803_puzzle_read_temp_sensor(mcu_hwmon, channel, val); ++ default: ++ return -EINVAL; ++ } ++} ++ ++static int iei_wt61p803_puzzle_write(struct device *dev, enum hwmon_sensor_types type, ++ u32 attr, int channel, long val) ++{ ++ struct iei_wt61p803_puzzle_hwmon *mcu_hwmon = dev_get_drvdata(dev->parent); ++ ++ return iei_wt61p803_puzzle_write_pwm_channel(mcu_hwmon, channel, val); ++} ++ ++static umode_t iei_wt61p803_puzzle_is_visible(const void *data, enum hwmon_sensor_types type, ++ u32 attr, int channel) ++{ ++ const struct iei_wt61p803_puzzle_hwmon *mcu_hwmon = data; ++ ++ switch (type) { ++ case hwmon_pwm: ++ if (mcu_hwmon->thermal_cooling_dev_present[channel]) ++ return 0444; ++ if (attr == hwmon_pwm_input) ++ return 0644; ++ break; ++ case hwmon_fan: ++ if (attr == hwmon_fan_input) ++ return 0444; ++ break; ++ case hwmon_temp: ++ if (attr == hwmon_temp_input) ++ return 0444; ++ break; ++ default: ++ return 0; ++ } ++ ++ return 0; ++} ++ ++static const struct hwmon_ops iei_wt61p803_puzzle_hwmon_ops = { ++ .is_visible = iei_wt61p803_puzzle_is_visible, ++ .read = iei_wt61p803_puzzle_read, ++ .write = iei_wt61p803_puzzle_write, ++}; ++ ++static const struct hwmon_channel_info *iei_wt61p803_puzzle_info[] = { ++ HWMON_CHANNEL_INFO(pwm, ++ HWMON_PWM_INPUT, ++ HWMON_PWM_INPUT), ++ HWMON_CHANNEL_INFO(fan, ++ HWMON_F_INPUT, ++ HWMON_F_INPUT, ++ HWMON_F_INPUT, ++ HWMON_F_INPUT, ++ HWMON_F_INPUT), ++ HWMON_CHANNEL_INFO(temp, ++ HWMON_T_INPUT, ++ HWMON_T_INPUT), ++ NULL ++}; ++ ++static const struct hwmon_chip_info iei_wt61p803_puzzle_chip_info = { ++ .ops = &iei_wt61p803_puzzle_hwmon_ops, ++ .info = iei_wt61p803_puzzle_info, ++}; ++ ++static int iei_wt61p803_puzzle_get_max_state(struct thermal_cooling_device *tcdev, ++ unsigned long *state) ++{ ++ *state = IEI_WT61P803_PUZZLE_HWMON_MAX_PWM_VAL; ++ ++ return 0; ++} ++ ++static int iei_wt61p803_puzzle_get_cur_state(struct thermal_cooling_device *tcdev, ++ unsigned long *state) ++{ ++ struct iei_wt61p803_puzzle_thermal_cooling_device *cdev = tcdev->devdata; ++ struct iei_wt61p803_puzzle_hwmon *mcu_hwmon = cdev->mcu_hwmon; ++ long value; ++ int ret; ++ ++ ret = iei_wt61p803_puzzle_read_pwm_channel(mcu_hwmon, cdev->pwm_channel, &value); ++ if (ret) ++ return ret; ++ *state = value; ++ return 0; ++} ++ ++static int iei_wt61p803_puzzle_set_cur_state(struct thermal_cooling_device *tcdev, ++ unsigned long state) ++{ ++ struct iei_wt61p803_puzzle_thermal_cooling_device *cdev = tcdev->devdata; ++ struct iei_wt61p803_puzzle_hwmon *mcu_hwmon = cdev->mcu_hwmon; ++ ++ return iei_wt61p803_puzzle_write_pwm_channel(mcu_hwmon, cdev->pwm_channel, state); ++} ++ ++static const struct thermal_cooling_device_ops iei_wt61p803_puzzle_cooling_ops = { ++ .get_max_state = iei_wt61p803_puzzle_get_max_state, ++ .get_cur_state = iei_wt61p803_puzzle_get_cur_state, ++ .set_cur_state = iei_wt61p803_puzzle_set_cur_state, ++}; ++ ++static int ++iei_wt61p803_puzzle_enable_thermal_cooling_dev(struct device *dev, ++ struct fwnode_handle *child, ++ struct iei_wt61p803_puzzle_hwmon *mcu_hwmon) ++{ ++ struct iei_wt61p803_puzzle_thermal_cooling_device *cdev; ++ u32 pwm_channel; ++ u8 num_levels; ++ int ret; ++ ++ ret = fwnode_property_read_u32(child, "reg", &pwm_channel); ++ if (ret) ++ return ret; ++ ++ mcu_hwmon->thermal_cooling_dev_present[pwm_channel] = true; ++ ++ num_levels = fwnode_property_count_u8(child, "cooling-levels"); ++ if (!num_levels) ++ return -EINVAL; ++ ++ cdev = devm_kzalloc(dev, sizeof(*cdev), GFP_KERNEL); ++ if (!cdev) ++ return -ENOMEM; ++ ++ cdev->cooling_levels = devm_kmalloc_array(dev, num_levels, sizeof(u8), GFP_KERNEL); ++ if (!cdev->cooling_levels) ++ return -ENOMEM; ++ ++ ret = fwnode_property_read_u8_array(child, "cooling-levels", ++ cdev->cooling_levels, ++ num_levels); ++ if (ret) { ++ dev_err(dev, "Couldn't read property 'cooling-levels'\n"); ++ return ret; ++ } ++ ++ snprintf(cdev->name, THERMAL_NAME_LENGTH, "wt61p803_puzzle_%d", pwm_channel); ++ cdev->tcdev = devm_thermal_of_cooling_device_register(dev, NULL, cdev->name, cdev, ++ &iei_wt61p803_puzzle_cooling_ops); ++ if (IS_ERR(cdev->tcdev)) ++ return PTR_ERR(cdev->tcdev); ++ ++ cdev->mcu_hwmon = mcu_hwmon; ++ cdev->pwm_channel = pwm_channel; ++ mcu_hwmon->cdev[pwm_channel] = cdev; ++ ++ return 0; ++} ++ ++static int iei_wt61p803_puzzle_hwmon_probe(struct platform_device *pdev) ++{ ++ struct device *dev = &pdev->dev; ++ struct iei_wt61p803_puzzle *mcu = dev_get_drvdata(dev->parent); ++ struct iei_wt61p803_puzzle_hwmon *mcu_hwmon; ++ struct fwnode_handle *child; ++ struct device *hwmon_dev; ++ int ret; ++ ++ mcu_hwmon = devm_kzalloc(dev, sizeof(*mcu_hwmon), GFP_KERNEL); ++ if (!mcu_hwmon) ++ return -ENOMEM; ++ ++ mcu_hwmon->mcu = mcu; ++ platform_set_drvdata(pdev, mcu_hwmon); ++ mutex_init(&mcu_hwmon->lock); ++ ++ hwmon_dev = devm_hwmon_device_register_with_info(dev, "iei_wt61p803_puzzle", ++ mcu_hwmon, ++ &iei_wt61p803_puzzle_chip_info, ++ NULL); ++ if (IS_ERR(hwmon_dev)) ++ return PTR_ERR(hwmon_dev); ++ ++ /* Control fans via PWM lines via Linux Kernel */ ++ if (IS_ENABLED(CONFIG_THERMAL)) { ++ device_for_each_child_node(dev, child) { ++ ret = iei_wt61p803_puzzle_enable_thermal_cooling_dev(dev, child, mcu_hwmon); ++ if (ret) { ++ dev_err(dev, "Enabling the PWM fan failed\n"); ++ fwnode_handle_put(child); ++ return ret; ++ } ++ } ++ } ++ return 0; ++} ++ ++static const struct of_device_id iei_wt61p803_puzzle_hwmon_id_table[] = { ++ { .compatible = "iei,wt61p803-puzzle-hwmon" }, ++ {} ++}; ++MODULE_DEVICE_TABLE(of, iei_wt61p803_puzzle_hwmon_id_table); ++ ++static struct platform_driver iei_wt61p803_puzzle_hwmon_driver = { ++ .driver = { ++ .name = "iei-wt61p803-puzzle-hwmon", ++ .of_match_table = iei_wt61p803_puzzle_hwmon_id_table, ++ }, ++ .probe = iei_wt61p803_puzzle_hwmon_probe, ++}; ++ ++module_platform_driver(iei_wt61p803_puzzle_hwmon_driver); ++ ++MODULE_DESCRIPTION("IEI WT61P803 PUZZLE MCU HWMON Driver"); ++MODULE_AUTHOR("Luka Kovacic <luka.kovacic@sartura.hr>"); ++MODULE_LICENSE("GPL v2"); diff --git a/target/linux/mvebu/patches-5.4/904-drivers-leds-Add-the-IEI-WT61P803-PUZZLE-LED-driver.patch b/target/linux/mvebu/patches-5.4/904-drivers-leds-Add-the-IEI-WT61P803-PUZZLE-LED-driver.patch new file mode 100644 index 0000000000..55224a2a20 --- /dev/null +++ b/target/linux/mvebu/patches-5.4/904-drivers-leds-Add-the-IEI-WT61P803-PUZZLE-LED-driver.patch @@ -0,0 +1,207 @@ +From f3b44eb69cc561cf05d00506dcec0dd9be003ed8 Mon Sep 17 00:00:00 2001 +From: Luka Kovacic <luka.kovacic () sartura ! hr> +Date: Tue, 24 Aug 2021 12:44:35 +0000 +Subject: [PATCH 4/7] drivers: leds: Add the IEI WT61P803 PUZZLE LED driver + +Add support for the IEI WT61P803 PUZZLE LED driver. +Currently only the front panel power LED is supported, +since it is the only LED on this board wired through the +MCU. + +The LED is wired directly to the on-board MCU controller +and is toggled using an MCU command. + +Support for more LEDs is going to be added in case more +boards implement this microcontroller, as LEDs use many +different GPIOs. + +This driver depends on the IEI WT61P803 PUZZLE MFD driver. + +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/leds/Kconfig | 8 ++ + drivers/leds/Makefile | 1 + + drivers/leds/leds-iei-wt61p803-puzzle.c | 147 ++++++++++++++++++++++++ + 3 files changed, 156 insertions(+) + create mode 100644 drivers/leds/leds-iei-wt61p803-puzzle.c + +--- a/drivers/leds/Kconfig ++++ b/drivers/leds/Kconfig +@@ -278,6 +278,14 @@ config LEDS_IPAQ_MICRO + Choose this option if you want to use the notification LED on + Compaq/HP iPAQ h3100 and h3600. + ++config LEDS_IEI_WT61P803_PUZZLE ++ tristate "LED Support for the IEI WT61P803 PUZZLE MCU" ++ depends on LEDS_CLASS ++ depends on MFD_IEI_WT61P803_PUZZLE ++ help ++ This option enables support for LEDs controlled by the IEI WT61P803 ++ M801 MCU. ++ + config LEDS_HP6XX + tristate "LED Support for the HP Jornada 6xx" + depends on LEDS_CLASS +--- a/drivers/leds/Makefile ++++ b/drivers/leds/Makefile +@@ -43,6 +43,7 @@ obj-$(CONFIG_LEDS_LP8860) += leds-lp886 + obj-$(CONFIG_LEDS_TCA6507) += leds-tca6507.o + obj-$(CONFIG_LEDS_TLC591XX) += leds-tlc591xx.o + obj-$(CONFIG_LEDS_CLEVO_MAIL) += leds-clevo-mail.o ++obj-$(CONFIG_LEDS_IEI_WT61P803_PUZZLE) += leds-iei-wt61p803-puzzle.o + obj-$(CONFIG_LEDS_IPAQ_MICRO) += leds-ipaq-micro.o + obj-$(CONFIG_LEDS_HP6XX) += leds-hp6xx.o + obj-$(CONFIG_LEDS_OT200) += leds-ot200.o +--- /dev/null ++++ b/drivers/leds/leds-iei-wt61p803-puzzle.c +@@ -0,0 +1,147 @@ ++// SPDX-License-Identifier: GPL-2.0-only ++/* IEI WT61P803 PUZZLE MCU LED Driver ++ * ++ * Copyright (C) 2020 Sartura Ltd. ++ * Author: Luka Kovacic <luka.kovacic@sartura.hr> ++ */ ++ ++#include <linux/leds.h> ++#include <linux/mfd/iei-wt61p803-puzzle.h> ++#include <linux/mod_devicetable.h> ++#include <linux/module.h> ++#include <linux/platform_device.h> ++#include <linux/property.h> ++#include <linux/slab.h> ++ ++enum iei_wt61p803_puzzle_led_state { ++ IEI_LED_OFF = 0x30, ++ IEI_LED_ON = 0x31, ++ IEI_LED_BLINK_5HZ = 0x32, ++ IEI_LED_BLINK_1HZ = 0x33, ++}; ++ ++/** ++ * struct iei_wt61p803_puzzle_led - MCU LED Driver ++ * @cdev: LED classdev ++ * @mcu: MCU struct pointer ++ * @response_buffer Global MCU response buffer ++ * @lock: General mutex lock to protect simultaneous R/W access to led_power_state ++ * @led_power_state: State of the front panel power LED ++ */ ++struct iei_wt61p803_puzzle_led { ++ struct led_classdev cdev; ++ struct iei_wt61p803_puzzle *mcu; ++ unsigned char response_buffer[IEI_WT61P803_PUZZLE_BUF_SIZE]; ++ struct mutex lock; /* mutex to protect led_power_state */ ++ int led_power_state; ++}; ++ ++static inline struct iei_wt61p803_puzzle_led *cdev_to_iei_wt61p803_puzzle_led ++ (struct led_classdev *led_cdev) ++{ ++ return container_of(led_cdev, struct iei_wt61p803_puzzle_led, cdev); ++} ++ ++static int iei_wt61p803_puzzle_led_brightness_set_blocking(struct led_classdev *cdev, ++ enum led_brightness brightness) ++{ ++ struct iei_wt61p803_puzzle_led *priv = cdev_to_iei_wt61p803_puzzle_led(cdev); ++ unsigned char *resp_buf = priv->response_buffer; ++ unsigned char led_power_cmd[5] = {}; ++ size_t reply_size; ++ int ret; ++ ++ led_power_cmd[0] = IEI_WT61P803_PUZZLE_CMD_HEADER_START; ++ led_power_cmd[1] = IEI_WT61P803_PUZZLE_CMD_LED; ++ led_power_cmd[2] = IEI_WT61P803_PUZZLE_CMD_LED_POWER; ++ led_power_cmd[3] = brightness == LED_OFF ? IEI_LED_OFF : IEI_LED_ON; ++ ++ ret = iei_wt61p803_puzzle_write_command(priv->mcu, led_power_cmd, ++ sizeof(led_power_cmd), ++ resp_buf, ++ &reply_size); ++ if (ret) ++ return ret; ++ ++ if (reply_size != 3) ++ return -EIO; ++ ++ 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)) ++ return -EIO; ++ ++ mutex_lock(&priv->lock); ++ priv->led_power_state = brightness; ++ mutex_unlock(&priv->lock); ++ ++ return 0; ++} ++ ++static enum led_brightness iei_wt61p803_puzzle_led_brightness_get(struct led_classdev *cdev) ++{ ++ struct iei_wt61p803_puzzle_led *priv = cdev_to_iei_wt61p803_puzzle_led(cdev); ++ int led_state; ++ ++ mutex_lock(&priv->lock); ++ led_state = priv->led_power_state; ++ mutex_unlock(&priv->lock); ++ ++ return led_state; ++} ++ ++static int iei_wt61p803_puzzle_led_probe(struct platform_device *pdev) ++{ ++ struct device *dev = &pdev->dev; ++ struct iei_wt61p803_puzzle *mcu = dev_get_drvdata(dev->parent); ++ struct iei_wt61p803_puzzle_led *priv; ++ struct led_init_data init_data = {}; ++ struct fwnode_handle *child; ++ int ret; ++ ++ if (device_get_child_node_count(dev) != 1) ++ return -EINVAL; ++ ++ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); ++ if (!priv) ++ return -ENOMEM; ++ ++ priv->mcu = mcu; ++ priv->led_power_state = 1; ++ mutex_init(&priv->lock); ++ dev_set_drvdata(dev, priv); ++ ++ child = device_get_next_child_node(dev, NULL); ++ init_data.fwnode = child; ++ ++ priv->cdev.brightness_set_blocking = iei_wt61p803_puzzle_led_brightness_set_blocking; ++ priv->cdev.brightness_get = iei_wt61p803_puzzle_led_brightness_get; ++ priv->cdev.max_brightness = 1; ++ ++ ret = devm_led_classdev_register_ext(dev, &priv->cdev, &init_data); ++ if (ret) ++ dev_err(dev, "Could not register LED\n"); ++ ++ fwnode_handle_put(child); ++ return ret; ++} ++ ++static const struct of_device_id iei_wt61p803_puzzle_led_of_match[] = { ++ { .compatible = "iei,wt61p803-puzzle-leds" }, ++ { } ++}; ++MODULE_DEVICE_TABLE(of, iei_wt61p803_puzzle_led_of_match); ++ ++static struct platform_driver iei_wt61p803_puzzle_led_driver = { ++ .driver = { ++ .name = "iei-wt61p803-puzzle-led", ++ .of_match_table = iei_wt61p803_puzzle_led_of_match, ++ }, ++ .probe = iei_wt61p803_puzzle_led_probe, ++}; ++module_platform_driver(iei_wt61p803_puzzle_led_driver); ++ ++MODULE_DESCRIPTION("IEI WT61P803 PUZZLE front panel LED driver"); ++MODULE_AUTHOR("Luka Kovacic <luka.kovacic@sartura.hr>"); ++MODULE_LICENSE("GPL v2"); ++MODULE_ALIAS("platform:leds-iei-wt61p803-puzzle"); diff --git a/target/linux/mvebu/patches-5.4/905-Documentation-ABI-Add-iei-wt61p803-puzzle-driver-sys.patch b/target/linux/mvebu/patches-5.4/905-Documentation-ABI-Add-iei-wt61p803-puzzle-driver-sys.patch new file mode 100644 index 0000000000..b1d420ef0a --- /dev/null +++ b/target/linux/mvebu/patches-5.4/905-Documentation-ABI-Add-iei-wt61p803-puzzle-driver-sys.patch @@ -0,0 +1,82 @@ +From 2fab3b4956c5b2f83c1e1abffc1df39de2933d83 Mon Sep 17 00:00:00 2001 +From: Luka Kovacic <luka.kovacic () sartura ! hr> +Date: Tue, 24 Aug 2021 12:44:36 +0000 +Subject: [PATCH 5/7] Documentation/ABI: Add iei-wt61p803-puzzle driver sysfs + interface documentation + +Add the iei-wt61p803-puzzle driver sysfs interface documentation to allow +monitoring and control of the microcontroller from user space. + +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> +--- + .../testing/sysfs-driver-iei-wt61p803-puzzle | 61 +++++++++++++++++++ + 1 file changed, 61 insertions(+) + create mode 100644 Documentation/ABI/testing/sysfs-driver-iei-wt61p803-puzzle + +--- /dev/null ++++ b/Documentation/ABI/testing/sysfs-driver-iei-wt61p803-puzzle +@@ -0,0 +1,61 @@ ++What: /sys/bus/serial/devices/.../mac_address_* ++Date: September 2020 ++Contact: Luka Kovacic <luka.kovacic@sartura.hr> ++Description: (RW) Internal factory assigned MAC address values ++ ++What: /sys/bus/serial/devices/.../serial_number ++Date: September 2020 ++Contact: Luka Kovacic <luka.kovacic@sartura.hr> ++Description: (RW) Internal factory assigned serial number ++ ++What: /sys/bus/serial/devices/.../version ++Date: September 2020 ++Contact: Luka Kovacic <luka.kovacic@sartura.hr> ++Description: (RO) Internal MCU firmware version ++ ++What: /sys/bus/serial/devices/.../protocol_version ++Date: September 2020 ++Contact: Luka Kovacic <luka.kovacic@sartura.hr> ++Description: (RO) Internal MCU communication protocol version ++ ++What: /sys/bus/serial/devices/.../power_loss_recovery ++Date: September 2020 ++Contact: Luka Kovacic <luka.kovacic@sartura.hr> ++Description: (RW) Host platform power loss recovery settings ++ Value mapping: 0 - Always-On, 1 - Always-Off, 2 - Always-AC, 3 - Always-WA ++ ++What: /sys/bus/serial/devices/.../bootloader_mode ++Date: September 2020 ++Contact: Luka Kovacic <luka.kovacic@sartura.hr> ++Description: (RO) Internal MCU bootloader mode status ++ Value mapping: ++ 0 - normal mode ++ 1 - bootloader mode ++ ++What: /sys/bus/serial/devices/.../power_status ++Date: September 2020 ++Contact: Luka Kovacic <luka.kovacic@sartura.hr> ++Description: (RO) Power status indicates the host platform power on method. ++ Value mapping (bitwise list): ++ 0x80 - Null ++ 0x40 - Firmware flag ++ 0x20 - Power loss detection flag (powered off) ++ 0x10 - Power loss detection flag (AC mode) ++ 0x08 - Button power on ++ 0x04 - Wake-on-LAN power on ++ 0x02 - RTC alarm power on ++ 0x01 - AC recover power on ++ ++What: /sys/bus/serial/devices/.../build_info ++Date: September 2020 ++Contact: Luka Kovacic <luka.kovacic@sartura.hr> ++Description: (RO) Internal MCU firmware build date ++ Format: yyyy/mm/dd hh:mm ++ ++What: /sys/bus/serial/devices/.../ac_recovery_status ++Date: September 2020 ++Contact: Luka Kovacic <luka.kovacic@sartura.hr> ++Description: (RO) Host platform AC recovery status value ++ Value mapping: ++ 0 - board has not been recovered from power down ++ 1 - board has been recovered from power down diff --git a/target/linux/mvebu/patches-5.4/906-Documentation-hwmon-Add-iei-wt61p803-puzzle-hwmon-dr.patch b/target/linux/mvebu/patches-5.4/906-Documentation-hwmon-Add-iei-wt61p803-puzzle-hwmon-dr.patch new file mode 100644 index 0000000000..aaac99ab5d --- /dev/null +++ b/target/linux/mvebu/patches-5.4/906-Documentation-hwmon-Add-iei-wt61p803-puzzle-hwmon-dr.patch @@ -0,0 +1,74 @@ +From 0aff3e5923fecc6842473ad07a688d6e2f2c2d55 Mon Sep 17 00:00:00 2001 +From: Luka Kovacic <luka.kovacic () sartura ! hr> +Date: Tue, 24 Aug 2021 12:44:37 +0000 +Subject: [PATCH 6/7] Documentation/hwmon: Add iei-wt61p803-puzzle hwmon driver + documentation + +Add the iei-wt61p803-puzzle driver hwmon driver interface documentation. + +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> +--- + .../hwmon/iei-wt61p803-puzzle-hwmon.rst | 43 +++++++++++++++++++ + Documentation/hwmon/index.rst | 1 + + 2 files changed, 44 insertions(+) + create mode 100644 Documentation/hwmon/iei-wt61p803-puzzle-hwmon.rst + +--- /dev/null ++++ b/Documentation/hwmon/iei-wt61p803-puzzle-hwmon.rst +@@ -0,0 +1,43 @@ ++.. SPDX-License-Identifier: GPL-2.0-only ++ ++Kernel driver iei-wt61p803-puzzle-hwmon ++======================================= ++ ++Supported chips: ++ * IEI WT61P803 PUZZLE for IEI Puzzle M801 ++ ++ Prefix: 'iei-wt61p803-puzzle-hwmon' ++ ++Author: Luka Kovacic <luka.kovacic@sartura.hr> ++ ++ ++Description ++----------- ++ ++This driver adds fan and temperature sensor reading for some IEI Puzzle ++series boards. ++ ++Sysfs attributes ++---------------- ++ ++The following attributes are supported: ++ ++- IEI WT61P803 PUZZLE for IEI Puzzle M801 ++ ++/sys files in hwmon subsystem ++----------------------------- ++ ++================= == ===================================================== ++fan[1-5]_input RO files for fan speed (in RPM) ++pwm[1-2] RW files for fan[1-2] target duty cycle (0..255) ++temp[1-2]_input RO files for temperature sensors, in millidegree Celsius ++================= == ===================================================== ++ ++/sys files in thermal subsystem ++------------------------------- ++ ++================= == ===================================================== ++cur_state RW file for current cooling state of the cooling device ++ (0..max_state) ++max_state RO file for maximum cooling state of the cooling device ++================= == ===================================================== +--- a/Documentation/hwmon/index.rst ++++ b/Documentation/hwmon/index.rst +@@ -62,6 +62,7 @@ Hardware Monitoring Kernel Drivers + ibmaem + ibm-cffps + ibmpowernv ++ iei-wt61p803-puzzle-hwmon + ina209 + ina2xx + ina3221 diff --git a/target/linux/mvebu/patches-5.4/907-MAINTAINERS-Add-an-entry-for-the-IEI-WT61P803-PUZZLE.patch b/target/linux/mvebu/patches-5.4/907-MAINTAINERS-Add-an-entry-for-the-IEI-WT61P803-PUZZLE.patch new file mode 100644 index 0000000000..830cf33ce4 --- /dev/null +++ b/target/linux/mvebu/patches-5.4/907-MAINTAINERS-Add-an-entry-for-the-IEI-WT61P803-PUZZLE.patch @@ -0,0 +1,41 @@ +From 12479baad28d2a08c6cb9e83471057635fa1635c Mon Sep 17 00:00:00 2001 +From: Luka Kovacic <luka.kovacic () sartura ! hr> +Date: Tue, 24 Aug 2021 12:44:38 +0000 +Subject: [PATCH 7/7] MAINTAINERS: Add an entry for the IEI WT61P803 PUZZLE + driver + +Add an entry for the IEI WT61P803 PUZZLE driver (MFD, HWMON, LED drivers). + +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> +--- + MAINTAINERS | 16 ++++++++++++++++ + 1 file changed, 16 insertions(+) + +--- a/MAINTAINERS ++++ b/MAINTAINERS +@@ -7929,6 +7929,22 @@ F: include/net/cfg802154.h + F: include/net/ieee802154_netdev.h + F: Documentation/networking/ieee802154.rst + ++IEI WT61P803 M801 MFD DRIVER ++M: Luka Kovacic <luka.kovacic@sartura.hr> ++M: Luka Perkov <luka.perkov@sartura.hr> ++M: Goran Medic <goran.medic@sartura.hr> ++L: linux-kernel@vger.kernel.org ++S: Maintained ++F: Documentation/ABI/stable/sysfs-driver-iei-wt61p803-puzzle ++F: Documentation/devicetree/bindings/hwmon/iei,wt61p803-puzzle-hwmon.yaml ++F: Documentation/devicetree/bindings/leds/iei,wt61p803-puzzle-leds.yaml ++F: Documentation/devicetree/bindings/mfd/iei,wt61p803-puzzle.yaml ++F: Documentation/hwmon/iei-wt61p803-puzzle-hwmon.rst ++F: drivers/hwmon/iei-wt61p803-puzzle-hwmon.c ++F: drivers/leds/leds-iei-wt61p803-puzzle.c ++F: drivers/mfd/iei-wt61p803-puzzle.c ++F: include/linux/mfd/iei-wt61p803-puzzle.h ++ + IFE PROTOCOL + M: Yotam Gigi <yotam.gi@gmail.com> + M: Jamal Hadi Salim <jhs@mojatatu.com> diff --git a/target/linux/mvebu/patches-5.4/910-drivers-leds-wt61p803-puzzle-improvements.patch b/target/linux/mvebu/patches-5.4/910-drivers-leds-wt61p803-puzzle-improvements.patch new file mode 100644 index 0000000000..1e065ed6e7 --- /dev/null +++ b/target/linux/mvebu/patches-5.4/910-drivers-leds-wt61p803-puzzle-improvements.patch @@ -0,0 +1,247 @@ +--- a/drivers/leds/leds-iei-wt61p803-puzzle.c ++++ b/drivers/leds/leds-iei-wt61p803-puzzle.c +@@ -9,10 +9,13 @@ + #include <linux/mfd/iei-wt61p803-puzzle.h> + #include <linux/mod_devicetable.h> + #include <linux/module.h> ++#include <linux/of.h> + #include <linux/platform_device.h> + #include <linux/property.h> + #include <linux/slab.h> + ++#define IEI_LEDS_MAX 4 ++ + enum iei_wt61p803_puzzle_led_state { + IEI_LED_OFF = 0x30, + IEI_LED_ON = 0x31, +@@ -34,6 +37,9 @@ struct iei_wt61p803_puzzle_led { + unsigned char response_buffer[IEI_WT61P803_PUZZLE_BUF_SIZE]; + struct mutex lock; /* mutex to protect led_power_state */ + int led_power_state; ++ int id; ++ bool blinking; ++ bool active_low; + }; + + static inline struct iei_wt61p803_puzzle_led *cdev_to_iei_wt61p803_puzzle_led +@@ -51,10 +57,20 @@ static int iei_wt61p803_puzzle_led_brigh + size_t reply_size; + int ret; + ++ mutex_lock(&priv->lock); ++ if (priv->blinking) { ++ if (brightness == LED_OFF) ++ priv->blinking = false; ++ else ++ return 0; ++ } ++ mutex_unlock(&priv->lock); ++ + led_power_cmd[0] = IEI_WT61P803_PUZZLE_CMD_HEADER_START; + led_power_cmd[1] = IEI_WT61P803_PUZZLE_CMD_LED; +- led_power_cmd[2] = IEI_WT61P803_PUZZLE_CMD_LED_POWER; +- led_power_cmd[3] = brightness == LED_OFF ? IEI_LED_OFF : IEI_LED_ON; ++ led_power_cmd[2] = IEI_WT61P803_PUZZLE_CMD_LED_SET(priv->id); ++ led_power_cmd[3] = ((brightness == LED_OFF) ^ priv->active_low) ? ++ IEI_LED_OFF : IEI_LED_ON; + + ret = iei_wt61p803_puzzle_write_command(priv->mcu, led_power_cmd, + sizeof(led_power_cmd), +@@ -90,39 +106,164 @@ static enum led_brightness iei_wt61p803_ + return led_state; + } + ++static int iei_wt61p803_puzzle_led_set_blink(struct led_classdev *cdev, ++ unsigned long *delay_on, ++ unsigned long *delay_off) ++{ ++ struct iei_wt61p803_puzzle_led *priv = cdev_to_iei_wt61p803_puzzle_led(cdev); ++ unsigned char led_blink_cmd[5] = {}; ++ unsigned char resp_buf[IEI_WT61P803_PUZZLE_BUF_SIZE]; ++ size_t reply_size; ++ int ret = 0; ++ ++ /* set defaults */ ++ if (!*delay_on && !*delay_off) { ++ *delay_on = 500; ++ *delay_off = 500; ++ } ++ ++ /* minimum delay for soft-driven blinking is 50ms to keep load low */ ++ if (*delay_on < 50) ++ *delay_on = 50; ++ ++ if (*delay_off < 50) ++ *delay_off = 50; ++ ++ if (*delay_on != *delay_off) ++ return -EINVAL; ++ ++ /* aggressively offload blinking to hardware, if possible */ ++ if (*delay_on < 100) { ++ return -EINVAL; ++ } else if (*delay_on < 200) { ++ *delay_on = 100; ++ *delay_off = 100; ++ } else if (*delay_on <= 500) { ++ *delay_on = 500; ++ *delay_off = 500; ++ } else { ++ return -EINVAL; ++ } ++ ++ led_blink_cmd[0] = IEI_WT61P803_PUZZLE_CMD_HEADER_START; ++ led_blink_cmd[1] = IEI_WT61P803_PUZZLE_CMD_LED; ++ led_blink_cmd[2] = IEI_WT61P803_PUZZLE_CMD_LED_SET(priv->id); ++ led_blink_cmd[3] = (*delay_on == 100)?IEI_LED_BLINK_5HZ:IEI_LED_BLINK_1HZ; ++ ++ ret = iei_wt61p803_puzzle_write_command(priv->mcu, led_blink_cmd, ++ sizeof(led_blink_cmd), ++ resp_buf, ++ &reply_size); ++ ++ if (ret) ++ return ret; ++ ++ if (reply_size != 3) ++ return -EIO; ++ ++ 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)) ++ return -EIO; ++ ++ mutex_lock(&priv->lock); ++ priv->blinking = true; ++ mutex_unlock(&priv->lock); ++ ++ return ret; ++} ++ ++static int iei_wt61p803_puzzle_led_set_dt_default(struct led_classdev *cdev, ++ struct device_node *np) ++{ ++ const char *state; ++ int ret = 0; ++ ++ state = of_get_property(np, "default-state", NULL); ++ if (state) { ++ if (!strcmp(state, "on")) { ++ ret = ++ iei_wt61p803_puzzle_led_brightness_set_blocking( ++ cdev, cdev->max_brightness); ++ } else { ++ ret = iei_wt61p803_puzzle_led_brightness_set_blocking( ++ cdev, LED_OFF); ++ } ++ } ++ ++ return ret; ++} ++ + static int iei_wt61p803_puzzle_led_probe(struct platform_device *pdev) + { + struct device *dev = &pdev->dev; ++ struct device_node *np = dev_of_node(dev); ++ struct device_node *child; + struct iei_wt61p803_puzzle *mcu = dev_get_drvdata(dev->parent); + struct iei_wt61p803_puzzle_led *priv; +- struct led_init_data init_data = {}; +- struct fwnode_handle *child; + int ret; ++ u32 reg; + +- if (device_get_child_node_count(dev) != 1) ++ if (device_get_child_node_count(dev) > IEI_LEDS_MAX) + return -EINVAL; + +- priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); +- if (!priv) +- return -ENOMEM; +- +- priv->mcu = mcu; +- priv->led_power_state = 1; +- mutex_init(&priv->lock); +- dev_set_drvdata(dev, priv); +- +- child = device_get_next_child_node(dev, NULL); +- init_data.fwnode = child; +- +- priv->cdev.brightness_set_blocking = iei_wt61p803_puzzle_led_brightness_set_blocking; +- priv->cdev.brightness_get = iei_wt61p803_puzzle_led_brightness_get; +- priv->cdev.max_brightness = 1; ++ for_each_available_child_of_node(np, child) { ++ struct led_init_data init_data = {}; + +- ret = devm_led_classdev_register_ext(dev, &priv->cdev, &init_data); +- if (ret) +- dev_err(dev, "Could not register LED\n"); ++ ret = of_property_read_u32(child, "reg", ®); ++ if (ret) { ++ dev_err(dev, "Failed to read led 'reg' property\n"); ++ goto put_child_node; ++ } ++ ++ if (reg > IEI_LEDS_MAX) { ++ dev_err(dev, "Invalid led reg %u\n", reg); ++ ret = -EINVAL; ++ goto put_child_node; ++ } ++ ++ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); ++ if (!priv) { ++ ret = -ENOMEM; ++ goto put_child_node; ++ } ++ ++ mutex_init(&priv->lock); ++ ++ dev_set_drvdata(dev, priv); ++ ++ if (of_property_read_bool(child, "active-low")) ++ priv->active_low = true; ++ ++ priv->mcu = mcu; ++ priv->id = reg; ++ priv->led_power_state = 1; ++ priv->blinking = false; ++ init_data.fwnode = of_fwnode_handle(child); ++ ++ priv->cdev.brightness_set_blocking = iei_wt61p803_puzzle_led_brightness_set_blocking; ++ priv->cdev.brightness_get = iei_wt61p803_puzzle_led_brightness_get; ++ priv->cdev.blink_set = iei_wt61p803_puzzle_led_set_blink; ++ ++ priv->cdev.max_brightness = 1; ++ ++ ret = iei_wt61p803_puzzle_led_set_dt_default(&priv->cdev, child); ++ if (ret) { ++ dev_err(dev, "Could apply default from DT\n"); ++ goto put_child_node; ++ } ++ ++ ret = devm_led_classdev_register_ext(dev, &priv->cdev, &init_data); ++ if (ret) { ++ dev_err(dev, "Could not register LED\n"); ++ goto put_child_node; ++ } ++ } ++ ++ return ret; + +- fwnode_handle_put(child); ++put_child_node: ++ of_node_put(child); + return ret; + } + +--- a/include/linux/mfd/iei-wt61p803-puzzle.h ++++ b/include/linux/mfd/iei-wt61p803-puzzle.h +@@ -36,7 +36,7 @@ + #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_LED_SET(n) (0x30 | (n)) + + #define IEI_WT61P803_PUZZLE_CMD_TEMP 0x54 /* T */ + #define IEI_WT61P803_PUZZLE_CMD_TEMP_ALL 0x41 /* A */ |