diff options
| -rw-r--r-- | schulung_tools/drivers/modules/hellodriver/patch-kernel-build.diff | 32 | ||||
| -rw-r--r-- | schulung_tools/drivers/patch-kernel-hello.diff | 291 |
2 files changed, 32 insertions, 291 deletions
diff --git a/schulung_tools/drivers/modules/hellodriver/patch-kernel-build.diff b/schulung_tools/drivers/modules/hellodriver/patch-kernel-build.diff new file mode 100644 index 0000000..8d43ca7 --- /dev/null +++ b/schulung_tools/drivers/modules/hellodriver/patch-kernel-build.diff @@ -0,0 +1,32 @@ +diff -urNp a/drivers/char/Kconfig b/drivers/char/Kconfig +--- a/drivers/char/Kconfig 2016-05-16 00:43:13.000000000 +0200 ++++ b/drivers/char/Kconfig 2016-06-08 20:41:14.047205734 +0200 +@@ -6,6 +6,16 @@ menu "Character devices" + + source "drivers/tty/Kconfig" + ++config HELLO ++ tristate "hello demo driver" ++ default n ++ help ++ This driver demonstrates how to create a platform device that is ++ specified in a device tree. ++ ++ It also create a character device to demonstrate how a character ++ device interface can be provided to userspace. ++ + config DEVMEM + bool "/dev/mem virtual device support" + default y +diff -urNp a/drivers/char/Makefile b/drivers/char/Makefile +--- a/drivers/char/Makefile 2016-05-16 00:43:13.000000000 +0200 ++++ b/drivers/char/Makefile 2016-06-08 14:16:44.897437533 +0200 +@@ -16,6 +16,8 @@ obj-$(CONFIG_IBM_BSR) += bsr.o + obj-$(CONFIG_SGI_MBCS) += mbcs.o + obj-$(CONFIG_BFIN_OTP) += bfin-otp.o + ++obj-$(CONFIG_HELLO) += hello.o ++ + obj-$(CONFIG_PRINTER) += lp.o + + obj-$(CONFIG_APM_EMULATION) += apm-emulation.o diff --git a/schulung_tools/drivers/patch-kernel-hello.diff b/schulung_tools/drivers/patch-kernel-hello.diff deleted file mode 100644 index d3605c4..0000000 --- a/schulung_tools/drivers/patch-kernel-hello.diff +++ /dev/null @@ -1,291 +0,0 @@ -diff -urNp a/drivers/char/hello.c b/drivers/char/hello.c ---- a/drivers/char/hello.c 1970-01-01 01:00:00.000000000 +0100 -+++ b/drivers/char/hello.c 2016-06-08 20:46:01.991211855 +0200 -@@ -0,0 +1,255 @@ -+#include <linux/init.h> -+#include <linux/module.h> -+#include <linux/fs.h> -+#include <linux/uaccess.h> -+#include <linux/slab.h> -+#include <linux/device.h> -+#include <linux/platform_device.h> -+#include <linux/cdev.h> -+#include <linux/of.h> -+ -+struct hello_dev { -+ struct device *dev; -+ struct cdev cdev; -+ unsigned int minor; -+}; -+ -+#define HELLO_MAX_DEVICES 10 -+ -+static struct class *hello_class; -+static dev_t hello_devt; -+ -+static int hello_open(struct inode *node, struct file *f) -+{ -+ struct cdev *cd = node->i_cdev; -+ struct hello_dev *hello = container_of(cd, struct hello_dev, cdev); -+ dev_info(hello->dev, "%s\n", __func__); -+ f->private_data = hello; -+ return 0; -+} -+ -+static int hello_release(struct inode *node, struct file *f) -+{ -+ struct hello_dev *hello = f->private_data; -+ dev_info(hello->dev, "%s\n", __func__); -+ f->private_data = NULL; -+ return 0; -+} -+ -+static ssize_t hello_read(struct file *f, char __user *u, size_t s, loff_t *l) -+{ -+ struct hello_dev *hello = f->private_data; -+ char buf[10]; -+ size_t len; -+ -+ dev_info(hello->dev, "%s: size=%zu offset=%llu\n", __func__, s, *l); -+ -+ if (*l >= 40) -+ return 0; -+ -+ len = snprintf(buf, sizeof(buf), "hello:%d\n", hello->minor); -+ -+ if (s < len) -+ len = s; -+ -+ if (copy_to_user(u, buf, len) != 0) -+ return -EFAULT; -+ -+ *l += len; -+ -+ return len; -+} -+ -+static ssize_t hello_write(struct file *f, const char __user *u, size_t s, -+ loff_t *l) -+{ -+ struct hello_dev *hello = f->private_data; -+ dev_info(hello->dev, "%s: size=%zu offset=%llu\n", __func__, s, *l); -+ return s; -+} -+ -+static const struct file_operations hello_fops = { -+ .owner = THIS_MODULE, -+ .open = hello_open, -+ .release = hello_release, -+ .read = hello_read, -+ .write = hello_write, -+}; -+ -+static ssize_t major_show(struct device *dev, -+ struct device_attribute *attr, char *buf) -+{ -+ return sprintf(buf, "%d\n", MAJOR(hello_devt)); -+} -+static DEVICE_ATTR_RO(major); -+ -+static ssize_t minor_show(struct device *dev, -+ struct device_attribute *attr, char *buf) -+{ -+ struct platform_device *pdev = to_platform_device(dev); -+ struct hello_dev *hello = platform_get_drvdata(pdev); -+ -+ return sprintf(buf, "%d\n", hello->minor); -+} -+static DEVICE_ATTR_RO(minor); -+ -+static struct attribute *hello_device_attrs[] = { -+ &dev_attr_major.attr, -+ &dev_attr_minor.attr, -+ NULL, -+}; -+ATTRIBUTE_GROUPS(hello_device); -+ -+static int hello_probe(struct platform_device *pdev) -+{ -+ struct hello_dev *hello; -+ struct device *dev; -+ dev_t devt; -+ int ret; -+ -+ hello = devm_kzalloc(&pdev->dev, sizeof(*hello), GFP_KERNEL); -+ if (!hello) { -+ dev_err(&pdev->dev, "devm_kzalloc failed\n"); -+ return -ENOMEM; -+ } -+ -+#ifdef CONFIG_OF -+ ret = of_property_read_u32(pdev->dev.of_node, "index", &hello->minor); -+ if (ret < 0) { -+ dev_err(&pdev->dev, "no index specified\n"); -+ goto err_out1; -+ } -+#else -+ hello->minor = (unsigned)pdev->id; -+#endif -+ -+ if (hello->minor >= HELLO_MAX_DEVICES) { -+ dev_err(&pdev->dev, "invalid index: %u\n", hello->minor); -+ ret = -EINVAL; -+ goto err_out1; -+ } -+ -+ hello->dev = &pdev->dev; -+ platform_set_drvdata(pdev, hello); -+ -+ devt = MKDEV(MAJOR(hello_devt), hello->minor); -+ -+ cdev_init(&hello->cdev, &hello_fops); -+ hello->cdev.owner = THIS_MODULE; -+ ret = cdev_add(&hello->cdev, devt, 1); -+ if (ret != 0) { -+ dev_err(&pdev->dev, "cdev_add failed\n"); -+ goto err_out1; -+ } -+ -+ dev = device_create(hello_class, &pdev->dev, devt, hello, -+ "hello%d", hello->minor); -+ if (IS_ERR(dev)) { -+ dev_err(&pdev->dev, "device_create failed\n"); -+ ret = PTR_ERR(dev); -+ goto err_out2; -+ } -+ -+ dev_info(&pdev->dev, "HELLO! I am hello device %d!\n", hello->minor); -+ -+ return 0; -+ -+err_out2: -+ cdev_del(&hello->cdev); -+err_out1: -+ platform_set_drvdata(pdev, NULL); -+ return ret; -+} -+ -+static int hello_remove(struct platform_device *pdev) -+{ -+ struct hello_dev *hello = platform_get_drvdata(pdev); -+ -+ device_destroy(hello_class, MKDEV(MAJOR(hello_devt), hello->minor)); -+ cdev_del(&hello->cdev); -+ platform_set_drvdata(pdev, NULL); -+ -+ dev_info(&pdev->dev, "GOODBYE! I was hello device %d!\n", hello->minor); -+ -+ return 0; -+} -+ -+static const struct of_device_id hello_match[] = { -+ { .compatible = "virtual,hello", }, -+ { /* end of table */ } -+}; -+ -+static struct platform_driver hello_driver = { -+ .driver = { -+ .name = "hello", -+ .owner = THIS_MODULE, -+ .of_match_table = hello_match, -+ }, -+ .probe = hello_probe, -+ .remove = hello_remove, -+}; -+ -+#ifndef CONFIG_OF -+static struct platform_device *pdevs[3]; -+#endif -+ -+static int __init hello_init(void) -+{ -+ int ret; -+ -+ printk(KERN_INFO "%s\n", __func__); -+ -+ ret = alloc_chrdev_region(&hello_devt, 0, HELLO_MAX_DEVICES, "hello"); -+ if (ret < 0) -+ return ret; -+ -+ hello_class = class_create(THIS_MODULE, "hello"); -+ if (IS_ERR(hello_class)) { -+ printk(KERN_ERR "%s: failed to create class\n", __func__); -+ ret = PTR_ERR(hello_class); -+ goto err_out1; -+ } -+ -+ hello_class->dev_groups = hello_device_groups; -+ -+ ret = platform_driver_register(&hello_driver); -+ if (ret != 0) -+ goto err_out2; -+ -+#ifndef CONFIG_OF -+ pdevs[0] = platform_device_register_simple("hello", 1, NULL, 0); -+ pdevs[1] = platform_device_register_simple("hello", 3, NULL, 0); -+ pdevs[2] = platform_device_register_simple("hello", 5, NULL, 0); -+#endif -+ -+ return 0; -+ -+err_out2: -+ class_destroy(hello_class); -+err_out1: -+ unregister_chrdev_region(hello_devt, HELLO_MAX_DEVICES); -+ return ret; -+} -+ -+static void __exit hello_exit(void) -+{ -+ printk(KERN_INFO "%s\n", __func__); -+ -+#ifndef CONFIG_OF -+ platform_device_unregister(pdevs[0]); -+ platform_device_unregister(pdevs[1]); -+ platform_device_unregister(pdevs[2]); -+#endif -+ -+ platform_driver_unregister(&hello_driver); -+ class_destroy(hello_class); -+ unregister_chrdev_region(hello_devt, HELLO_MAX_DEVICES); -+} -+ -+module_init(hello_init); -+module_exit(hello_exit); -+ -+MODULE_AUTHOR("John Ogness <john.ogness@linutronix.de>"); -+MODULE_DESCRIPTION("a great module for hello-ing!"); -+MODULE_LICENSE("GPL v2"); -+MODULE_VERSION("20160607"); -diff -urNp a/drivers/char/Kconfig b/drivers/char/Kconfig ---- a/drivers/char/Kconfig 2016-05-16 00:43:13.000000000 +0200 -+++ b/drivers/char/Kconfig 2016-06-08 20:41:14.047205734 +0200 -@@ -6,6 +6,16 @@ menu "Character devices" - - source "drivers/tty/Kconfig" - -+config HELLO -+ tristate "hello demo driver" -+ default n -+ help -+ This driver demonstrates how to create a platform device that is -+ specified in a device tree. -+ -+ It also create a character device to demonstrate how a character -+ device interface can be provided to userspace. -+ - config DEVMEM - bool "/dev/mem virtual device support" - default y -diff -urNp a/drivers/char/Makefile b/drivers/char/Makefile ---- a/drivers/char/Makefile 2016-05-16 00:43:13.000000000 +0200 -+++ b/drivers/char/Makefile 2016-06-08 14:16:44.897437533 +0200 -@@ -16,6 +16,8 @@ obj-$(CONFIG_IBM_BSR) += bsr.o - obj-$(CONFIG_SGI_MBCS) += mbcs.o - obj-$(CONFIG_BFIN_OTP) += bfin-otp.o - -+obj-$(CONFIG_HELLO) += hello.o -+ - obj-$(CONFIG_PRINTER) += lp.o - - obj-$(CONFIG_APM_EMULATION) += apm-emulation.o |