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authorGreg Kroah-Hartman <gregkh@suse.de>2009-06-02 18:01:00 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2009-06-16 00:30:25 -0400
commitd12b77afb4f0a06e9c7e82a0e88d5f011b862c10 (patch)
tree5cfcb40dc0df513eb90dc8a7695e40da47ae55c8 /samples
parent5e8e9245f9bb4c6ed2a2f4af42f2ec9733dc5378 (diff)
firmware: remove broken example files
The firmware example files are beyond broken, and will not work, and should not be used as an example at all. So lets remove them and hope someone writes new files sometime in the future. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'samples')
-rw-r--r--samples/firmware_class/firmware_sample_driver.c121
-rw-r--r--samples/firmware_class/firmware_sample_firmware_class.c204
2 files changed, 0 insertions, 325 deletions
diff --git a/samples/firmware_class/firmware_sample_driver.c b/samples/firmware_class/firmware_sample_driver.c
deleted file mode 100644
index 219a29896603..000000000000
--- a/samples/firmware_class/firmware_sample_driver.c
+++ /dev/null
@@ -1,121 +0,0 @@
1/*
2 * firmware_sample_driver.c -
3 *
4 * Copyright (c) 2003 Manuel Estrada Sainz
5 *
6 * Sample code on how to use request_firmware() from drivers.
7 *
8 */
9
10#include <linux/module.h>
11#include <linux/kernel.h>
12#include <linux/init.h>
13#include <linux/device.h>
14#include <linux/string.h>
15#include <linux/firmware.h>
16
17static struct device ghost_device = {
18 .bus_id = "ghost0",
19};
20
21
22static void sample_firmware_load(char *firmware, int size)
23{
24 u8 buf[size+1];
25 memcpy(buf, firmware, size);
26 buf[size] = '\0';
27 printk(KERN_INFO "firmware_sample_driver: firmware: %s\n", buf);
28}
29
30static void sample_probe_default(void)
31{
32 /* uses the default method to get the firmware */
33 const struct firmware *fw_entry;
34 int retval;
35
36 printk(KERN_INFO "firmware_sample_driver: "
37 "a ghost device got inserted :)\n");
38
39 retval = request_firmware(&fw_entry, "sample_driver_fw", &ghost_device);
40 if (retval) {
41 printk(KERN_ERR
42 "firmware_sample_driver: Firmware not available\n");
43 return;
44 }
45
46 sample_firmware_load(fw_entry->data, fw_entry->size);
47
48 release_firmware(fw_entry);
49
50 /* finish setting up the device */
51}
52
53static void sample_probe_specific(void)
54{
55 int retval;
56 /* Uses some specific hotplug support to get the firmware from
57 * userspace directly into the hardware, or via some sysfs file */
58
59 /* NOTE: This currently doesn't work */
60
61 printk(KERN_INFO "firmware_sample_driver: "
62 "a ghost device got inserted :)\n");
63
64 retval = request_firmware(NULL, "sample_driver_fw", &ghost_device);
65 if (retval) {
66 printk(KERN_ERR
67 "firmware_sample_driver: Firmware load failed\n");
68 return;
69 }
70
71 /* request_firmware blocks until userspace finished, so at
72 * this point the firmware should be already in the device */
73
74 /* finish setting up the device */
75}
76
77static void sample_probe_async_cont(const struct firmware *fw, void *context)
78{
79 if (!fw) {
80 printk(KERN_ERR
81 "firmware_sample_driver: firmware load failed\n");
82 return;
83 }
84
85 printk(KERN_INFO "firmware_sample_driver: device pointer \"%s\"\n",
86 (char *)context);
87 sample_firmware_load(fw->data, fw->size);
88}
89
90static void sample_probe_async(void)
91{
92 /* Let's say that I can't sleep */
93 int error;
94 error = request_firmware_nowait(THIS_MODULE, FW_ACTION_NOHOTPLUG,
95 "sample_driver_fw", &ghost_device,
96 "my device pointer",
97 sample_probe_async_cont);
98 if (error)
99 printk(KERN_ERR "firmware_sample_driver:"
100 " request_firmware_nowait failed\n");
101}
102
103static int __init sample_init(void)
104{
105 device_initialize(&ghost_device);
106 /* since there is no real hardware insertion I just call the
107 * sample probe functions here */
108 sample_probe_specific();
109 sample_probe_default();
110 sample_probe_async();
111 return 0;
112}
113
114static void __exit sample_exit(void)
115{
116}
117
118module_init(sample_init);
119module_exit(sample_exit);
120
121MODULE_LICENSE("GPL");
diff --git a/samples/firmware_class/firmware_sample_firmware_class.c b/samples/firmware_class/firmware_sample_firmware_class.c
deleted file mode 100644
index e6cf7a43a297..000000000000
--- a/samples/firmware_class/firmware_sample_firmware_class.c
+++ /dev/null
@@ -1,204 +0,0 @@
1/*
2 * firmware_sample_firmware_class.c -
3 *
4 * Copyright (c) 2003 Manuel Estrada Sainz
5 *
6 * NOTE: This is just a probe of concept, if you think that your driver would
7 * be well served by this mechanism please contact me first.
8 *
9 * DON'T USE THIS CODE AS IS
10 *
11 */
12
13#include <linux/device.h>
14#include <linux/module.h>
15#include <linux/init.h>
16#include <linux/timer.h>
17#include <linux/slab.h>
18#include <linux/string.h>
19#include <linux/firmware.h>
20
21
22MODULE_AUTHOR("Manuel Estrada Sainz");
23MODULE_DESCRIPTION("Hackish sample for using firmware class directly");
24MODULE_LICENSE("GPL");
25
26static inline struct class_device *to_class_dev(struct kobject *obj)
27{
28 return container_of(obj, struct class_device, kobj);
29}
30
31static inline
32struct class_device_attribute *to_class_dev_attr(struct attribute *_attr)
33{
34 return container_of(_attr, struct class_device_attribute, attr);
35}
36
37struct firmware_priv {
38 char fw_id[FIRMWARE_NAME_MAX];
39 s32 loading:2;
40 u32 abort:1;
41};
42
43static ssize_t firmware_loading_show(struct class_device *class_dev, char *buf)
44{
45 struct firmware_priv *fw_priv = class_get_devdata(class_dev);
46 return sprintf(buf, "%d\n", fw_priv->loading);
47}
48
49static ssize_t firmware_loading_store(struct class_device *class_dev,
50 const char *buf, size_t count)
51{
52 struct firmware_priv *fw_priv = class_get_devdata(class_dev);
53 int prev_loading = fw_priv->loading;
54
55 fw_priv->loading = simple_strtol(buf, NULL, 10);
56
57 switch (fw_priv->loading) {
58 case -1:
59 /* abort load an panic */
60 break;
61 case 1:
62 /* setup load */
63 break;
64 case 0:
65 if (prev_loading == 1) {
66 /* finish load and get the device back to working
67 * state */
68 }
69 break;
70 }
71
72 return count;
73}
74static CLASS_DEVICE_ATTR(loading, 0644,
75 firmware_loading_show, firmware_loading_store);
76
77static ssize_t firmware_data_read(struct kobject *kobj,
78 struct bin_attribute *bin_attr,
79 char *buffer, loff_t offset, size_t count)
80{
81 struct class_device *class_dev = to_class_dev(kobj);
82 struct firmware_priv *fw_priv = class_get_devdata(class_dev);
83
84 /* read from the devices firmware memory */
85
86 return count;
87}
88static ssize_t firmware_data_write(struct kobject *kobj,
89 struct bin_attribute *bin_attr,
90 char *buffer, loff_t offset, size_t count)
91{
92 struct class_device *class_dev = to_class_dev(kobj);
93 struct firmware_priv *fw_priv = class_get_devdata(class_dev);
94
95 /* write to the devices firmware memory */
96
97 return count;
98}
99static struct bin_attribute firmware_attr_data = {
100 .attr = {.name = "data", .mode = 0644},
101 .size = 0,
102 .read = firmware_data_read,
103 .write = firmware_data_write,
104};
105static int fw_setup_class_device(struct class_device *class_dev,
106 const char *fw_name,
107 struct device *device)
108{
109 int retval;
110 struct firmware_priv *fw_priv;
111
112 fw_priv = kzalloc(sizeof(struct firmware_priv), GFP_KERNEL);
113 if (!fw_priv) {
114 retval = -ENOMEM;
115 goto out;
116 }
117
118 memset(class_dev, 0, sizeof(*class_dev));
119
120 strncpy(fw_priv->fw_id, fw_name, FIRMWARE_NAME_MAX);
121 fw_priv->fw_id[FIRMWARE_NAME_MAX-1] = '\0';
122
123 strncpy(class_dev->class_id, device->bus_id, BUS_ID_SIZE);
124 class_dev->class_id[BUS_ID_SIZE-1] = '\0';
125 class_dev->dev = device;
126
127 class_dev->class = &firmware_class;
128 class_set_devdata(class_dev, fw_priv);
129 retval = class_device_register(class_dev);
130 if (retval) {
131 printk(KERN_ERR "%s: class_device_register failed\n",
132 __func__);
133 goto error_free_fw_priv;
134 }
135
136 retval = sysfs_create_bin_file(&class_dev->kobj, &firmware_attr_data);
137 if (retval) {
138 printk(KERN_ERR "%s: sysfs_create_bin_file failed\n",
139 __func__);
140 goto error_unreg_class_dev;
141 }
142
143 retval = class_device_create_file(class_dev,
144 &class_device_attr_loading);
145 if (retval) {
146 printk(KERN_ERR "%s: class_device_create_file failed\n",
147 __func__);
148 goto error_remove_data;
149 }
150
151 goto out;
152
153error_remove_data:
154 sysfs_remove_bin_file(&class_dev->kobj, &firmware_attr_data);
155error_unreg_class_dev:
156 class_device_unregister(class_dev);
157error_free_fw_priv:
158 kfree(fw_priv);
159out:
160 return retval;
161}
162static void fw_remove_class_device(struct class_device *class_dev)
163{
164 struct firmware_priv *fw_priv = class_get_devdata(class_dev);
165
166 class_device_remove_file(class_dev, &class_device_attr_loading);
167 sysfs_remove_bin_file(&class_dev->kobj, &firmware_attr_data);
168 class_device_unregister(class_dev);
169}
170
171static struct class_device *class_dev;
172
173static struct device my_device = {
174 .bus_id = "my_dev0",
175};
176
177static int __init firmware_sample_init(void)
178{
179 int error;
180
181 device_initialize(&my_device);
182 class_dev = kmalloc(sizeof(struct class_device), GFP_KERNEL);
183 if (!class_dev)
184 return -ENOMEM;
185
186 error = fw_setup_class_device(class_dev, "my_firmware_image",
187 &my_device);
188 if (error) {
189 kfree(class_dev);
190 return error;
191 }
192 return 0;
193
194}
195static void __exit firmware_sample_exit(void)
196{
197 struct firmware_priv *fw_priv = class_get_devdata(class_dev);
198 fw_remove_class_device(class_dev);
199 kfree(fw_priv);
200 kfree(class_dev);
201}
202
203module_init(firmware_sample_init);
204module_exit(firmware_sample_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-17 21:10:32 -0500