From ab121f379a3cff458c90e6f480ba4bb68c8733dd Mon Sep 17 00:00:00 2001
From: Javier Martinez Canillas <martinez.javier@gmail.com>
Date: Sat, 27 Nov 2010 07:49:17 +0100
Subject: Linux Device Drivers 3 examples

---
 pci/Makefile   | 11 ++++++++++
 pci/pci_skel.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 74 insertions(+)
 create mode 100644 pci/Makefile
 create mode 100644 pci/pci_skel.c

(limited to 'pci')

diff --git a/pci/Makefile b/pci/Makefile
new file mode 100644
index 0000000..8b6a333
--- /dev/null
+++ b/pci/Makefile
@@ -0,0 +1,11 @@
+obj-m	:= pci_skel.o
+
+KERNELDIR ?= /lib/modules/$(shell uname -r)/build
+PWD       := $(shell pwd)
+
+all:
+	$(MAKE) -C $(KERNELDIR) M=$(PWD)
+
+clean:
+	rm -rf *.o *~ core .depend .*.cmd *.ko *.mod.c .tmp_versions
+
diff --git a/pci/pci_skel.c b/pci/pci_skel.c
new file mode 100644
index 0000000..f115669
--- /dev/null
+++ b/pci/pci_skel.c
@@ -0,0 +1,63 @@
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+
+
+static struct pci_device_id ids[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_3), },
+	{ 0, }
+};
+MODULE_DEVICE_TABLE(pci, ids);
+
+static unsigned char skel_get_revision(struct pci_dev *dev)
+{
+	u8 revision;
+
+	pci_read_config_byte(dev, PCI_REVISION_ID, &revision);
+	return revision;
+}
+
+static int probe(struct pci_dev *dev, const struct pci_device_id *id)
+{
+	/* Do probing type stuff here.  
+	 * Like calling request_region();
+	 */
+	pci_enable_device(dev);
+	
+	if (skel_get_revision(dev) == 0x42)
+		return -ENODEV;
+
+
+	return 0;
+}
+
+static void remove(struct pci_dev *dev)
+{
+	/* clean up any allocated resources and stuff here.
+	 * like call release_region();
+	 */
+}
+
+static struct pci_driver pci_driver = {
+	.name = "pci_skel",
+	.id_table = ids,
+	.probe = probe,
+	.remove = remove,
+};
+
+static int __init pci_skel_init(void)
+{
+	return pci_register_driver(&pci_driver);
+}
+
+static void __exit pci_skel_exit(void)
+{
+	pci_unregister_driver(&pci_driver);
+}
+
+MODULE_LICENSE("GPL");
+
+module_init(pci_skel_init);
+module_exit(pci_skel_exit);
-- 
cgit v1.2.1-18-gbd029