Tab5 power expander driver and devicetree parsing improvements (#507)
* **New Features** * PI4IOE5V6408 I2C I/O expander driver with public GPIO APIs * CLI tool to list devicetree dependencies * **Device Tree Updates** * M5Stack Tab5 configured with two I2C IO expanders; PI4IOE5V6408 binding added * **Build / Tooling** * Devicetree code generation integrated into build; generated artifacts and dynamic dependency resolution exposed * **Refactor** * Kernel/run APIs updated to accept a null‑terminated devicetree modules array; many module symbols renamed * **Documentation** * Added README and Apache‑2.0 license for new driver module
This commit is contained in:
Ken Van Hoeylandt
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@@ -0,0 +1,11 @@
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cmake_minimum_required(VERSION 3.20)
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include("${CMAKE_CURRENT_LIST_DIR}/../../Buildscripts/module.cmake")
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file(GLOB_RECURSE SOURCE_FILES "source/*.c*")
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tactility_add_module(pi4ioe5v6408-module
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SRCS ${SOURCE_FILES}
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INCLUDE_DIRS include/
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REQUIRES TactilityKernel
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)
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@@ -0,0 +1,195 @@
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Apache License
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==============
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_Version 2.0, January 2004_
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@@ -0,0 +1,8 @@
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# PI4IOE5V6408 I/O expander
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A driver for the `PI4IOE5V6408` low-voltage translating 8-bit I2C-bus I/O expander by Diodes Incorporated.
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See https://www.diodes.com/part/view/PI4IOE5V6408
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||||
And: https://www.digikey.com/htmldatasheets/production/3031904/0/0/1/pi4ioe5v6408.html
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|
||||
License: [Apache v2.0](LICENSE-Apache-2.0.md)
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@@ -0,0 +1,5 @@
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description: Diodes Incorporated PI4IOE5V6408 low-voltage translating 8-bit I2C-bus I/O expander
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include: ["i2c-device.yaml"]
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compatible: "diodes,pi4ioe5v6408"
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@@ -0,0 +1,3 @@
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dependencies:
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- TactilityKernel
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bindings: bindings
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@@ -0,0 +1,15 @@
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// SPDX-License-Identifier: Apache-2.0
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#pragma once
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#include <tactility/bindings/bindings.h>
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#include <drivers/pi4ioe5v6408.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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DEFINE_DEVICETREE(pi4ioe5v6408, struct Pi4ioe5v6408Config)
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#ifdef __cplusplus
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}
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#endif
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@@ -0,0 +1,41 @@
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// SPDX-License-Identifier: Apache-2.0
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#pragma once
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#include <stdint.h>
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#include <tactility/error.h>
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#include <tactility/freertos/freertos.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct Device;
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struct Pi4ioe5v6408Config {
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/** Address on bus */
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uint8_t address;
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};
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error_t pi4ioe5v6408_set_direction(struct Device* device, uint8_t bits, TickType_t timeout);
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error_t pi4ioe5v6408_set_output_level(struct Device* device, uint8_t bits, TickType_t timeout);
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error_t pi4ioe5v6408_get_output_level(struct Device* device, uint8_t* bits, TickType_t timeout);
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error_t pi4ioe5v6408_set_output_high_impedance(struct Device* device, uint8_t bits, TickType_t timeout);
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error_t pi4ioe5v6408_set_input_default_level(struct Device* device, uint8_t bits, TickType_t timeout);
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error_t pi4ioe5v6408_set_pull_enable(struct Device* device, uint8_t bits, TickType_t timeout);
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error_t pi4ioe5v6408_set_pull_select(struct Device* device, uint8_t bits, TickType_t timeout);
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error_t pi4ioe5v6408_get_input_level(struct Device* device, uint8_t* bits, TickType_t timeout);
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error_t pi4ioe5v6408_set_interrupt_mask(struct Device* device, uint8_t bits, TickType_t timeout);
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error_t pi4ioe5v6408_get_interrupt_level(struct Device* device, uint8_t* bits, TickType_t timeout);
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#ifdef __cplusplus
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}
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#endif
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@@ -0,0 +1,14 @@
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// SPDX-License-Identifier: Apache-2.0
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#pragma once
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#include <tactility/module.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern struct Module pi4ioe5v6408_module;
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#ifdef __cplusplus
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}
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#endif
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@@ -0,0 +1,33 @@
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// SPDX-License-Identifier: Apache-2.0
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#include <tactility/check.h>
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#include <tactility/driver.h>
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#include <tactility/module.h>
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extern "C" {
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extern Driver pi4ioe5v6408_driver;
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extern const ModuleSymbol pi4ioe5v6408_module_symbols[];
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static error_t start() {
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/* We crash when construct fails, because if a single driver fails to construct,
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* there is no guarantee that the previously constructed drivers can be destroyed */
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check(driver_construct_add(&pi4ioe5v6408_driver) == ERROR_NONE);
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return ERROR_NONE;
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}
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static error_t stop() {
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/* We crash when destruct fails, because if a single driver fails to destruct,
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* there is no guarantee that the previously destroyed drivers can be recovered */
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check(driver_remove_destruct(&pi4ioe5v6408_driver) == ERROR_NONE);
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return ERROR_NONE;
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}
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Module pi4ioe5v6408_module = {
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.name = "pi4ioe5v6408",
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.start = start,
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.stop = stop,
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.symbols = pi4ioe5v6408_module_symbols,
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.internal = nullptr
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};
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}
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@@ -0,0 +1,100 @@
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// SPDX-License-Identifier: Apache-2.0
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#include <drivers/pi4ioe5v6408.h>
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#include <pi4ioe5v6408_module.h>
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#include <tactility/device.h>
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#include <tactility/driver.h>
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#include <tactility/drivers/i2c_controller.h>
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#include <tactility/log.h>
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#define TAG "PI4IOE5V6408"
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#define GET_CONFIG(device) (static_cast<const Pi4ioe5v6408Config*>((device)->config))
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constexpr auto PI4_REGISTER_DIRECTION = 0x03;
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constexpr auto PI4_REGISTER_OUTPUT_LEVEL = 0x05;
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constexpr auto PI4_REGISTER_OUTPUT_HIGH_IMPEDANCE = 0x07;
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constexpr auto PI4_REGISTER_INPUT_DEFAULT_LEVEL = 0x09;
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constexpr auto PI4_REGISTER_PULL_ENABLE = 0x0B;
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||||
constexpr auto PI4_REGISTER_PULL_SELECT = 0x0D;
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||||
constexpr auto PI4_REGISTER_INPUT_LEVEL = 0x0F;
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||||
constexpr auto PI4_REGISTER_INTERRUPT_MASK = 0x11;
|
||||
constexpr auto PI4_REGISTER_INTERRUPT_LEVEL = 0x13;
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||||
|
||||
static error_t start(Device* device) {
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||||
auto* parent = device_get_parent(device);
|
||||
if (device_get_type(parent) != &I2C_CONTROLLER_TYPE) {
|
||||
LOG_E(TAG, "Parent device is not I2C");
|
||||
return ERROR_RESOURCE;
|
||||
}
|
||||
LOG_I(TAG, "Started PI4IOE5V6408 device %s", device->name);
|
||||
return ERROR_NONE;
|
||||
}
|
||||
|
||||
static error_t stop(Device* device) {
|
||||
return ERROR_NONE;
|
||||
}
|
||||
|
||||
extern "C" {
|
||||
|
||||
error_t pi4ioe5v6408_set_direction(Device* device, uint8_t bits, TickType_t timeout) {
|
||||
auto* parent = device_get_parent(device);
|
||||
return i2c_controller_register8_set(parent, GET_CONFIG(device)->address, PI4_REGISTER_DIRECTION, bits, timeout);
|
||||
}
|
||||
|
||||
error_t pi4ioe5v6408_set_output_level(Device* device, uint8_t bits, TickType_t timeout) {
|
||||
auto* parent = device_get_parent(device);
|
||||
return i2c_controller_register8_set(parent, GET_CONFIG(device)->address, PI4_REGISTER_OUTPUT_LEVEL, bits, timeout);
|
||||
}
|
||||
|
||||
error_t pi4ioe5v6408_get_output_level(Device* device, uint8_t* bits, TickType_t timeout) {
|
||||
auto* parent = device_get_parent(device);
|
||||
return i2c_controller_register8_get(parent, GET_CONFIG(device)->address, PI4_REGISTER_OUTPUT_LEVEL, bits, timeout);
|
||||
}
|
||||
|
||||
error_t pi4ioe5v6408_set_output_high_impedance(struct Device* device, uint8_t bits, TickType_t timeout) {
|
||||
auto* parent = device_get_parent(device);
|
||||
return i2c_controller_register8_set(parent, GET_CONFIG(device)->address, PI4_REGISTER_OUTPUT_HIGH_IMPEDANCE, bits, timeout);
|
||||
}
|
||||
|
||||
error_t pi4ioe5v6408_set_input_default_level(struct Device* device, uint8_t bits, TickType_t timeout) {
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||||
auto* parent = device_get_parent(device);
|
||||
return i2c_controller_register8_set(parent, GET_CONFIG(device)->address, PI4_REGISTER_INPUT_DEFAULT_LEVEL, bits, timeout);
|
||||
}
|
||||
|
||||
error_t pi4ioe5v6408_set_pull_enable(struct Device* device, uint8_t bits, TickType_t timeout) {
|
||||
auto* parent = device_get_parent(device);
|
||||
return i2c_controller_register8_set(parent, GET_CONFIG(device)->address, PI4_REGISTER_PULL_ENABLE, bits, timeout);
|
||||
}
|
||||
|
||||
error_t pi4ioe5v6408_set_pull_select(struct Device* device, uint8_t bits, TickType_t timeout) {
|
||||
auto* parent = device_get_parent(device);
|
||||
return i2c_controller_register8_set(parent, GET_CONFIG(device)->address, PI4_REGISTER_PULL_SELECT, bits, timeout);
|
||||
}
|
||||
|
||||
error_t pi4ioe5v6408_get_input_level(struct Device* device, uint8_t* bits, TickType_t timeout) {
|
||||
auto* parent = device_get_parent(device);
|
||||
return i2c_controller_register8_get(parent, GET_CONFIG(device)->address, PI4_REGISTER_INPUT_LEVEL, bits, timeout);
|
||||
}
|
||||
|
||||
error_t pi4ioe5v6408_set_interrupt_mask(struct Device* device, uint8_t bits, TickType_t timeout) {
|
||||
auto* parent = device_get_parent(device);
|
||||
return i2c_controller_register8_set(parent, GET_CONFIG(device)->address, PI4_REGISTER_INTERRUPT_MASK, bits, timeout);
|
||||
}
|
||||
|
||||
error_t pi4ioe5v6408_get_interrupt_level(struct Device* device, uint8_t* bits, TickType_t timeout) {
|
||||
auto* parent = device_get_parent(device);
|
||||
return i2c_controller_register8_get(parent, GET_CONFIG(device)->address, PI4_REGISTER_INTERRUPT_LEVEL, bits, timeout);
|
||||
}
|
||||
|
||||
Driver pi4ioe5v6408_driver = {
|
||||
.name = "pi4ioe5v6408",
|
||||
.compatible = (const char*[]) { "diodes,pi4ioe5v6408", nullptr},
|
||||
.start_device = start,
|
||||
.stop_device = stop,
|
||||
.api = nullptr,
|
||||
.device_type = nullptr,
|
||||
.owner = &pi4ioe5v6408_module,
|
||||
.internal = nullptr
|
||||
};
|
||||
|
||||
}
|
||||
@@ -0,0 +1,15 @@
|
||||
#include <drivers/pi4ioe5v6408.h>
|
||||
#include <tactility/module.h>
|
||||
|
||||
const struct ModuleSymbol pi4ioe5v6408_module_symbols[] = {
|
||||
DEFINE_MODULE_SYMBOL(pi4ioe5v6408_set_direction),
|
||||
DEFINE_MODULE_SYMBOL(pi4ioe5v6408_set_output_level),
|
||||
DEFINE_MODULE_SYMBOL(pi4ioe5v6408_set_output_high_impedance),
|
||||
DEFINE_MODULE_SYMBOL(pi4ioe5v6408_set_input_default_level),
|
||||
DEFINE_MODULE_SYMBOL(pi4ioe5v6408_set_pull_enable),
|
||||
DEFINE_MODULE_SYMBOL(pi4ioe5v6408_set_pull_select),
|
||||
DEFINE_MODULE_SYMBOL(pi4ioe5v6408_get_input_level),
|
||||
DEFINE_MODULE_SYMBOL(pi4ioe5v6408_set_interrupt_mask),
|
||||
DEFINE_MODULE_SYMBOL(pi4ioe5v6408_get_interrupt_level),
|
||||
MODULE_SYMBOL_TERMINATOR
|
||||
};
|
||||
Reference in New Issue
Block a user