From 74c9c3e08ddfbce93d46ad6521e45bf2fdbd03c5 Mon Sep 17 00:00:00 2001 From: sushe_Ubuntu Date: Sun, 26 May 2024 22:56:15 +0800 Subject: [PATCH 1/3] =?UTF-8?q?17platform=E6=97=A0=E8=AE=BE=E5=A4=87?= =?UTF-8?q?=E6=95=B0=E5=AE=9E=E9=AA=8C?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: sushe_Ubuntu --- 17_platform/.vscode/c_cpp_properties.json | 23 +++++ 17_platform/.vscode/settings.json | 21 ++++ 17_platform/Makefile | 13 +++ 17_platform/leddevice.c | 112 ++++++++++++++++++++++ 17_platform/leddriver.c | 90 +++++++++++++++++ 17_platform/platform.code-workspace | 41 ++++++++ 6 files changed, 300 insertions(+) create mode 100644 17_platform/.vscode/c_cpp_properties.json create mode 100644 17_platform/.vscode/settings.json create mode 100644 17_platform/Makefile create mode 100644 17_platform/leddevice.c create mode 100644 17_platform/leddriver.c create mode 100644 17_platform/platform.code-workspace diff --git a/17_platform/.vscode/c_cpp_properties.json b/17_platform/.vscode/c_cpp_properties.json new file mode 100644 index 0000000..fb6d96e --- /dev/null +++ b/17_platform/.vscode/c_cpp_properties.json @@ -0,0 +1,23 @@ +{ + "configurations": [ + { + "name": "Linux", + "includePath": [ + "/home/youxiu/linux/linux-imx-rel_imx_4.1.15_2.1.0_ga/include", + "/home/youxiu/linux/linux-imx-rel_imx_4.1.15_2.1.0_ga/arch/arm/include", + "/home/youxiu/linux/linux-imx-rel_imx_4.1.15_2.1.0_ga/arch/arm/include/generated", + "/home/youxiu/linux/linux-imx-rel_imx_4.1.15_2.1.0_ga/arch/arm/include/asm", + "/home/youxiu/linux/linux-imx-rel_imx_4.1.15_2.1.0_ga/drivers", + "${workspaceFolder}/**", + "${default}" + ], + "defines": ["__KERNEL__"], + "compilerPath": "/usr/bin/clang", + "cStandard": "c11", + "cppStandard": "c++17", + "intelliSenseMode": "clang-x64" + } + ], + "version": 4 +} + diff --git a/17_platform/.vscode/settings.json b/17_platform/.vscode/settings.json new file mode 100644 index 0000000..1a2a04a --- /dev/null +++ b/17_platform/.vscode/settings.json @@ -0,0 +1,21 @@ +{ + "search.exclude": { + "**/node_modules": true, + "**/bower_components": true, + "**/*.o":true, + "**/*.su":true, + "**/*.cmd":true, + "Documentation":true, + }, + "files.exclude": { + "**/.git": true, + "**/.svn": true, + "**/.hg": true, + "**/CVS": true, + "**/.DS_Store": true, + "**/*.o":true, + "**/*.su":true, + "**/*.cmd":true, + "Documentation":true, + } +} \ No newline at end of file diff --git a/17_platform/Makefile b/17_platform/Makefile new file mode 100644 index 0000000..52bcb89 --- /dev/null +++ b/17_platform/Makefile @@ -0,0 +1,13 @@ +KERNELDIR := /home/youxiu/linux/linux-imx-rel_imx_4.1.15_2.1.0_ga +CURRENT_PATH := $(shell pwd) +obj-m := leddrive.o + +build: kernel_modules + +kernel_modules: + $(MAKE) -C $(KERNELDIR) M=$(CURRENT_PATH) modules + +clean: + $(MAKE) -C $(KERNELDIR) M=$(CURRENT_PATH) clean + + diff --git a/17_platform/leddevice.c b/17_platform/leddevice.c new file mode 100644 index 0000000..63e410c --- /dev/null +++ b/17_platform/leddevice.c @@ -0,0 +1,112 @@ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* +* 寄存器地址定义 +*/ +#define CCM_CCGR1_BASE (0X020C406C) +#define SW_MUX_GPIO1_IO03_BASE (0X020E0068) +#define SW_PAD_GPIO1_IO03_BASE (0X020E02F4) +#define GPIO1_DR_BASE (0X0209C000) +#define GPIO1_GDIR_BASE (0X0209C004) +#define REGISTER_LENGTH 4 + +/* + @description : 释放 flatform 设备模块的时候此函数会执行 +* @param - dev : 要释放的设备 + +* @return 无 +*/ +static void led_release(struct device *dev) +{ + printk("led device released!\r\n"); +} + +static struct resource led_resources[] = { + [0] = { + .start = CCM_CCGR1_BASE, + .end = (CCM_CCGR1_BASE + REGISTER_LENGTH - 1), + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = SW_MUX_GPIO1_IO03_BASE, + .end = (SW_MUX_GPIO1_IO03_BASE + REGISTER_LENGTH - 1), + .flags = IORESOURCE_MEM, + }, + [2] = { + .start = SW_PAD_GPIO1_IO03_BASE, + .end = (SW_PAD_GPIO1_IO03_BASE + REGISTER_LENGTH - 1), + .flags = IORESOURCE_MEM, + }, + [3] = { + .start = GPIO1_DR_BASE, + .end = (GPIO1_DR_BASE + REGISTER_LENGTH - 1), + .flags = IORESOURCE_MEM, + }, + [3] = { + .start = GPIO1_GDIR_BASE, + .end = (GPIO1_GDIR_BASE + REGISTER_LENGTH - 1), + .flags = IORESOURCE_MEM, + }, +}; + + + +/* +* platform 设备结构体 +*/ + static struct platform_device leddevice = { + .name = "imx6ul-led", + .id = -1, + .dev = { + .release = &led_release, + }, + .num_resources = ARRAY_SIZE(led_resources), + .resource = led_resources, +}; + + +/* +* @description: 设备模块加载 +* @param : 无 +* @return : 无 +*/ +static int __init leddevice_init(void) +{ + return platform_device_register(&leddevice); +} + +/* +* @description : 设备模块注销 +* @param : 无 +* @return : 无 +*/ +static void __exit leddevice_exit(void) +{ + platform_device_unregister(&leddevice); +} + +module_init(leddevice_init); +module_exit(leddevice_exit); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("chaoliang"); \ No newline at end of file diff --git a/17_platform/leddriver.c b/17_platform/leddriver.c new file mode 100644 index 0000000..bd22132 --- /dev/null +++ b/17_platform/leddriver.c @@ -0,0 +1,90 @@ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + + +/* leddev 设备结构体*/ +struct leddev_dev{ + dev_t devid; + struct cdev cedv; + struct class *class; + struct device *device; + int major; +}; + +struct leddev_dev leddev; /* led设备 */ + + +static int led_open(struct inode *inode, struct file *filp) +{ + +} + +static ssize_t led_write(struct file *filp, const char __user *buf, + size_t cnt, loff_t *offt) +{ + + +} + + +static struct file_operation led_fops = { + .owner = THIS_MODULE, + .open = led_open, + .write = led_write, +}; + +static int led_probe(struct platform_device *dev) +{ + +} + + +static int led_remove(struct platform_device *dev) +{ + +} + +static struct platform_driver led_driver +{ + .driver = { + .name = "imx6ul-led", + }, + .probe = led_probe, + .remove = led_remove, +}; + + + +static int __init leddriver_init(void) +{ + return platform_driver_register(&led_driver); +} + +static __exit leddriver_exit(void) +{ + platform_driver_unregister(&led_driver); +} + +module_init(leddriver_init); +module_exit(leddriver_exit); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("chaoliang"); \ No newline at end of file diff --git a/17_platform/platform.code-workspace b/17_platform/platform.code-workspace new file mode 100644 index 0000000..a563c85 --- /dev/null +++ b/17_platform/platform.code-workspace @@ -0,0 +1,41 @@ +{ + "folders": [ + { + "path": "." + } + ], + "settings": { + "files.associations": { + "gpio.h": "c", + "*.tcc": "c", + "ioctl.h": "c", + "fstream": "c", + "types.h": "c", + "kernel.h": "c", + "ide.h": "c", + "uaccess.h": "c", + "atomic.h": "c", + "interrupt.h": "c", + "hardirq.h": "c", + "irq.h": "c", + "delay.h": "c", + "init.h": "c", + "module.h": "c", + "cdev.h": "c", + "of_address.h": "c", + "of_gpio.h": "c", + "errno.h": "c", + "device.h": "c", + "of.h": "c", + "of_irq.h": "c", + "timer.h": "c", + "stdlib.h": "c", + "stdio.h": "c", + "driver.h": "c", + "select.h": "c", + "fcntl.h": "c", + "signal.h": "c" + } + + } +} \ No newline at end of file -- Gitee From 937aed04f951b34ab90795f7fc60e092225bad5a Mon Sep 17 00:00:00 2001 From: sushe_Ubuntu Date: Sat, 1 Jun 2024 11:30:41 +0800 Subject: [PATCH 2/3] =?UTF-8?q?platform=E5=AE=9E=E9=AA=8C=EF=BC=8C?= =?UTF-8?q?=E9=A9=B1=E5=8A=A8=E5=92=8C=E8=AE=BE=E5=A4=87=E9=83=BD=E5=86=99?= =?UTF-8?q?=E5=A5=BD=E4=BA=86=EF=BC=8C=E8=AF=A5=E5=86=99APP=E4=BA=86?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: sushe_Ubuntu --- 17_platform/.vscode/c_cpp_properties.json | 29 ++++- 17_platform/Makefile | 4 +- 17_platform/leddriver.c | 150 ++++++++++++++++++++-- 3 files changed, 164 insertions(+), 19 deletions(-) diff --git a/17_platform/.vscode/c_cpp_properties.json b/17_platform/.vscode/c_cpp_properties.json index fb6d96e..cb10f14 100644 --- a/17_platform/.vscode/c_cpp_properties.json +++ b/17_platform/.vscode/c_cpp_properties.json @@ -3,19 +3,36 @@ { "name": "Linux", "includePath": [ - "/home/youxiu/linux/linux-imx-rel_imx_4.1.15_2.1.0_ga/include", - "/home/youxiu/linux/linux-imx-rel_imx_4.1.15_2.1.0_ga/arch/arm/include", - "/home/youxiu/linux/linux-imx-rel_imx_4.1.15_2.1.0_ga/arch/arm/include/generated", - "/home/youxiu/linux/linux-imx-rel_imx_4.1.15_2.1.0_ga/arch/arm/include/asm", - "/home/youxiu/linux/linux-imx-rel_imx_4.1.15_2.1.0_ga/drivers", + "../../../linux-imx-rel_imx_4.1.15_2.1.0_ga/include", + "../../../linux-imx-rel_imx_4.1.15_2.1.0_ga/arch/arm/include", + "../../../linux-imx-rel_imx_4.1.15_2.1.0_ga/arch/arm/include/generated", + "../../../linux-imx-rel_imx_4.1.15_2.1.0_ga/arch/arm/include/asm", + "../../../linux-imx-rel_imx_4.1.15_2.1.0_ga/drivers", "${workspaceFolder}/**", "${default}" ], - "defines": ["__KERNEL__"], + "defines": ["__KERNEL__","__linux__"], "compilerPath": "/usr/bin/clang", "cStandard": "c11", "cppStandard": "c++17", "intelliSenseMode": "clang-x64" + }, + { + "name": "Win32", + "includePath": [ + "../../../linux-imx-rel_imx_4.1.15_2.1.0_ga/include", + "../../../linux-imx-rel_imx_4.1.15_2.1.0_ga/arch/arm/include", + "../../../linux-imx-rel_imx_4.1.15_2.1.0_ga/arch/arm/include/generated", + "../../../linux-imx-rel_imx_4.1.15_2.1.0_ga/arch/arm/include/asm", + "../../../linux-imx-rel_imx_4.1.15_2.1.0_ga/drivers", + "${workspaceFolder}/**", + "${default}" + ], + "defines": ["__KERNEL__","__linux__"], + "compilerPath": "C:/Qt/Qt5.12.9/Tools/mingw730_64/bin/gcc.exe", + "cStandard": "c11", + "cppStandard": "c++17", + "intelliSenseMode": "gcc-x64" } ], "version": 4 diff --git a/17_platform/Makefile b/17_platform/Makefile index 52bcb89..895dfb1 100644 --- a/17_platform/Makefile +++ b/17_platform/Makefile @@ -1,6 +1,6 @@ -KERNELDIR := /home/youxiu/linux/linux-imx-rel_imx_4.1.15_2.1.0_ga +KERNELDIR := ../../../linux-imx-rel_imx_4.1.15_2.1.0_ga CURRENT_PATH := $(shell pwd) -obj-m := leddrive.o +obj-m := leddriver.o build: kernel_modules diff --git a/17_platform/leddriver.c b/17_platform/leddriver.c index bd22132..a8b8df5 100644 --- a/17_platform/leddriver.c +++ b/17_platform/leddriver.c @@ -20,11 +20,24 @@ #include #include +#define LEDDEV_CNT 1 /* 设备号长度 */ +#define LEDDEV_NAME "platled" /* 设备名字 */ +#define LEDOFF 0 +#define LEDON 1 + + +/* 寄存器名 */ +static void __iomem *IMX6U_CCM_CCGR1; +static void __iomem *SW_MUX_GPIO1_IO03; +static void __iomem *SW_PAD_GPIO1_IO03; +static void __iomem *GPIO1_DR; +static void __iomem *GPIO1_GDIR; + /* leddev 设备结构体*/ struct leddev_dev{ dev_t devid; - struct cdev cedv; + struct cdev cdev; struct class *class; struct device *device; int major; @@ -32,21 +45,50 @@ struct leddev_dev{ struct leddev_dev leddev; /* led设备 */ +void led0_switch(u8 sta) +{ + u32 val = 0; + if(sta == LEDON){ + val = readl(GPIO1_DR); + val &= ~(1 << 3); + writel(val, GPIO1_DR); + }else if(sta == LEDOFF){ + val = readl(GPIO1_DR); + val |= (1 << 3); + writel(val, GPIO1_DR); + } +} + static int led_open(struct inode *inode, struct file *filp) -{ - +{ + filp->private_data = &leddev; /* 设置私有数据 */ + return 0; } static ssize_t led_write(struct file *filp, const char __user *buf, size_t cnt, loff_t *offt) { - - + int retvalue; + unsigned char databuf[1]; + unsigned char ledstat; + retvalue = copy_from_user(databuf, buf, cnt); + if (retvalue < 0) + { + return -EFAULT; + } + + ledstat = databuf[0]; /* 获取状态 */ + if(ledstat == LEDON){ + led0_switch(LEDON); + } + else if(ledstat == LEDOFF){ + led0_switch(LEDOFF); + } + return 0; } - -static struct file_operation led_fops = { +static struct file_operations led_fops = { .owner = THIS_MODULE, .open = led_open, .write = led_write, @@ -54,16 +96,102 @@ static struct file_operation led_fops = { static int led_probe(struct platform_device *dev) { - + int i = 0; + int ressize[5]; + u32 val = 0; + struct resource *ledsource[5]; + + printk("led driver and device has matched!\r\n"); + + /* 1、获取资源 */ + for (i = 0; i < 5;i++){ + ledsource[i] = platform_get_resource(dev, IORESOURCE_MEM, i); + if(!ledsource[i]){ + dev_err(&dev->dev, "No MEM resource for always on\n"); + return -ENXIO; + } + ressize[i] = resource_size(ledsource[i]); + } + + /* 2、初始化LED */ + /* 寄存器地址映射 */ + IMX6U_CCM_CCGR1 = ioremap(ledsource[0]->start, ressize[0]); + SW_MUX_GPIO1_IO03 = ioremap(ledsource[1]->start, ressize[1]); + SW_PAD_GPIO1_IO03 = ioremap(ledsource[2]->start, ressize[2]); + GPIO1_DR = ioremap(ledsource[3]->start, ressize[3]); + GPIO1_GDIR = ioremap(ledsource[4]->start, ressize[4]); + + val = readl(IMX6U_CCM_CCGR1); + val &= ~(3 << 26); /* 清除以前的设置 */ + val |= (3 << 26); /* 设置新值 */ + writel(val, IMX6U_CCM_CCGR1); + + /* 设置 GPIO1_IO03 复用功能，将起复用为GPIO_IO03 */ + writel(5, SW_MUX_GPIO1_IO03); + writel(0x10B0, SW_PAD_GPIO1_IO03); + + /* 设置 GPIO1_IO03 为输出功能 */ + val = readl(GPIO1_GDIR); + val &= ~(1 << 3); /* 清除以前的设置 */ + val |= (1 << 3); + writel(val, GPIO1_GDIR); /* 设置为输出 */ + + + /* 默认关闭 LED1 */ + val = readl(GPIO1_DR); + val |= (1 << 3) ; + writel(val, GPIO1_DR); + + /* 注册字符设备驱动 */ + /*1、创建设备号 */ + + if (leddev.major) { + /* 定义了设备号*/ + leddev.devid = MKDEV(leddev.major, 0); + register_chrdev_region(leddev.devid, LEDDEV_CNT,LEDDEV_NAME); + } else { + /* 没有定义设备号*/ + alloc_chrdev_region(&leddev.devid, 0, LEDDEV_CNT,LEDDEV_NAME); + leddev.major = MAJOR(leddev.devid); + } + + /* 2、初始化 cdev */ + leddev.cdev.owner = THIS_MODULE; + cdev_init(&leddev.cdev, &led_fops); + + /* 3、添加一个 cdev */ + cdev_add(&leddev.cdev, leddev.devid, LEDDEV_CNT); + + /* 4、创建类 */ + leddev.class = class_create(THIS_MODULE, LEDDEV_NAME); + if (IS_ERR(leddev.class)) { + return PTR_ERR(leddev.class); + } + /* 5、创建设备 */ + leddev.device = device_create(leddev.class, NULL, leddev.devid,NULL, LEDDEV_NAME); + if (IS_ERR(leddev.device)) { + return PTR_ERR(leddev.device); + } + + return 0; } - static int led_remove(struct platform_device *dev) { - + iounmap(IMX6U_CCM_CCGR1); + iounmap(SW_MUX_GPIO1_IO03); + iounmap(SW_PAD_GPIO1_IO03); + iounmap(GPIO1_DR); + iounmap(GPIO1_GDIR); + + cdev_del(&leddev.cdev); + unregister_chrdev_region(leddev.devid, LEDDEV_CNT); + device_destroy(leddev.class, leddev.devid); + class_destroy(leddev.class); + return 0; } -static struct platform_driver led_driver +static struct platform_driver led_driver = { .driver = { .name = "imx6ul-led", -- Gitee From f77e9f49cc61466c20b3d8f293e6c61c1392d67d Mon Sep 17 00:00:00 2001 From: sushe_Ubuntu Date: Sun, 2 Jun 2024 22:13:40 +0800 Subject: [PATCH 3/3] =?UTF-8?q?platform=E5=B9=B3=E5=8F=B0=E4=B8=8B?= =?UTF-8?q?=E7=9A=84led=E5=AE=9E=E9=AA=8C=E5=AE=8C=E6=88=90?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: sushe_Ubuntu --- 17_platform/Makefile | 2 +- 17_platform/ledApp.c | 46 +++++++++++++++++++++++++++++++++++++++++ 17_platform/leddevice.c | 2 +- 17_platform/leddriver.c | 4 +++- 4 files changed, 51 insertions(+), 3 deletions(-) create mode 100644 17_platform/ledApp.c diff --git a/17_platform/Makefile b/17_platform/Makefile index 895dfb1..e51d710 100644 --- a/17_platform/Makefile +++ b/17_platform/Makefile @@ -1,6 +1,6 @@ KERNELDIR := ../../../linux-imx-rel_imx_4.1.15_2.1.0_ga CURRENT_PATH := $(shell pwd) -obj-m := leddriver.o +obj-m := leddevice.o build: kernel_modules diff --git a/17_platform/ledApp.c b/17_platform/ledApp.c new file mode 100644 index 0000000..05b1adc --- /dev/null +++ b/17_platform/ledApp.c @@ -0,0 +1,46 @@ +#include "stdio.h" +#include "unistd.h" +#include "sys/types.h" +#include "fcntl.h" +#include "stdlib.h" +#include "string.h" + +#define LEDOFF 0 +#define LEDOON 0 + +int main(int argc,char *argv[]) +{ + int fd, retvalue; + char *filename; + unsigned char databuf[3]; + if (argc != 3) + { + printf("Error Usage!\r\n"); + return -1; + } + + filename = argv[1]; + + /* 打开led驱动 */ + fd = open(filename, O_RDWR); + if(fd < 0){ + printf("file %s open failed!\r\n", argv[1]); + return -1; + } + + databuf[0] = atoi(argv[2]); + retvalue = write(fd, databuf, sizeof(databuf)); + if(retvalue < 0 ){ + printf("LED Control Failed!\r\n"); + close(fd); + return -1; + } + + retvalue = close(fd); + if(retvalue < 0){ + printf("file %s close failed!\r\n", argv[1]); + return -1; + } + + return 0; +} diff --git a/17_platform/leddevice.c b/17_platform/leddevice.c index 63e410c..9e3091f 100644 --- a/17_platform/leddevice.c +++ b/17_platform/leddevice.c @@ -63,7 +63,7 @@ static struct resource led_resources[] = { .end = (GPIO1_DR_BASE + REGISTER_LENGTH - 1), .flags = IORESOURCE_MEM, }, - [3] = { + [4] = { .start = GPIO1_GDIR_BASE, .end = (GPIO1_GDIR_BASE + REGISTER_LENGTH - 1), .flags = IORESOURCE_MEM, diff --git a/17_platform/leddriver.c b/17_platform/leddriver.c index a8b8df5..509adf2 100644 --- a/17_platform/leddriver.c +++ b/17_platform/leddriver.c @@ -107,7 +107,8 @@ static int led_probe(struct platform_device *dev) for (i = 0; i < 5;i++){ ledsource[i] = platform_get_resource(dev, IORESOURCE_MEM, i); if(!ledsource[i]){ - dev_err(&dev->dev, "No MEM resource for always on\n"); + dev_err(&dev->dev, "No MEM resource for always on\r\n"); + printk("No MEM resource[%d] \r\n", i); return -ENXIO; } ressize[i] = resource_size(ledsource[i]); @@ -188,6 +189,7 @@ static int led_remove(struct platform_device *dev) unregister_chrdev_region(leddev.devid, LEDDEV_CNT); device_destroy(leddev.class, leddev.devid); class_destroy(leddev.class); + printk("led driver rmmove!\r\n"); return 0; } -- Gitee