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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2010-04-06 20:08:49 -0400
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2010-04-06 20:08:49 -0400
commita244b25217978ffd54d2cd87013b3cd564689462 (patch)
tree8316b0eb088427e5f77d9f111c42470d5f6821dc /drivers/misc
parent0fdf86754f70e813845af4abaa805165ce57a0bb (diff)
Remove unused HDPU driver
This driver seems to be specific to a "Sky CPU" board for which we don't appear to have upstream support (or not any more). No Kconfig file in the kernel ever enables it. So remove it. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/Makefile1
-rw-r--r--drivers/misc/hdpuftrs/Makefile1
-rw-r--r--drivers/misc/hdpuftrs/hdpu_cpustate.c256
-rw-r--r--drivers/misc/hdpuftrs/hdpu_nexus.c149
4 files changed, 0 insertions, 407 deletions
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 27c484355414..208ae3091a4e 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -3,7 +3,6 @@
3# 3#
4 4
5obj-$(CONFIG_IBM_ASM) += ibmasm/ 5obj-$(CONFIG_IBM_ASM) += ibmasm/
6obj-$(CONFIG_HDPU_FEATURES) += hdpuftrs/
7obj-$(CONFIG_AD525X_DPOT) += ad525x_dpot.o 6obj-$(CONFIG_AD525X_DPOT) += ad525x_dpot.o
8obj-$(CONFIG_ATMEL_PWM) += atmel_pwm.o 7obj-$(CONFIG_ATMEL_PWM) += atmel_pwm.o
9obj-$(CONFIG_ATMEL_SSC) += atmel-ssc.o 8obj-$(CONFIG_ATMEL_SSC) += atmel-ssc.o
diff --git a/drivers/misc/hdpuftrs/Makefile b/drivers/misc/hdpuftrs/Makefile
deleted file mode 100644
index ac74ae679230..000000000000
--- a/drivers/misc/hdpuftrs/Makefile
+++ /dev/null
@@ -1 +0,0 @@
1obj-$(CONFIG_HDPU_FEATURES) := hdpu_cpustate.o hdpu_nexus.o
diff --git a/drivers/misc/hdpuftrs/hdpu_cpustate.c b/drivers/misc/hdpuftrs/hdpu_cpustate.c
deleted file mode 100644
index 176fe4e09d3f..000000000000
--- a/drivers/misc/hdpuftrs/hdpu_cpustate.c
+++ /dev/null
@@ -1,256 +0,0 @@
1/*
2 * Sky CPU State Driver
3 *
4 * Copyright (C) 2002 Brian Waite
5 *
6 * This driver allows use of the CPU state bits
7 * It exports the /dev/sky_cpustate and also
8 * /proc/sky_cpustate pseudo-file for status information.
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version
13 * 2 of the License, or (at your option) any later version.
14 *
15 */
16
17#include <linux/module.h>
18#include <linux/kernel.h>
19#include <linux/spinlock.h>
20#include <linux/smp_lock.h>
21#include <linux/miscdevice.h>
22#include <linux/proc_fs.h>
23#include <linux/hdpu_features.h>
24#include <linux/platform_device.h>
25#include <asm/uaccess.h>
26#include <linux/seq_file.h>
27#include <asm/io.h>
28
29#define SKY_CPUSTATE_VERSION "1.1"
30
31static int hdpu_cpustate_probe(struct platform_device *pdev);
32static int hdpu_cpustate_remove(struct platform_device *pdev);
33
34static unsigned char cpustate_get_state(void);
35static int cpustate_proc_open(struct inode *inode, struct file *file);
36static int cpustate_proc_read(struct seq_file *seq, void *offset);
37
38static struct cpustate_t cpustate;
39
40static const struct file_operations proc_cpustate = {
41 .open = cpustate_proc_open,
42 .read = seq_read,
43 .llseek = seq_lseek,
44 .release = single_release,
45 .owner = THIS_MODULE,
46};
47
48static int cpustate_proc_open(struct inode *inode, struct file *file)
49{
50 return single_open(file, cpustate_proc_read, NULL);
51}
52
53static int cpustate_proc_read(struct seq_file *seq, void *offset)
54{
55 seq_printf(seq, "CPU State: %04x\n", cpustate_get_state());
56 return 0;
57}
58
59static int cpustate_get_ref(int excl)
60{
61
62 int retval = -EBUSY;
63
64 spin_lock(&cpustate.lock);
65
66 if (cpustate.excl)
67 goto out_busy;
68
69 if (excl) {
70 if (cpustate.open_count)
71 goto out_busy;
72 cpustate.excl = 1;
73 }
74
75 cpustate.open_count++;
76 retval = 0;
77
78 out_busy:
79 spin_unlock(&cpustate.lock);
80 return retval;
81}
82
83static int cpustate_free_ref(void)
84{
85
86 spin_lock(&cpustate.lock);
87
88 cpustate.excl = 0;
89 cpustate.open_count--;
90
91 spin_unlock(&cpustate.lock);
92 return 0;
93}
94
95static unsigned char cpustate_get_state(void)
96{
97
98 return cpustate.cached_val;
99}
100
101static void cpustate_set_state(unsigned char new_state)
102{
103 unsigned int state = (new_state << 21);
104
105#ifdef DEBUG_CPUSTATE
106 printk("CPUSTATE -> 0x%x\n", new_state);
107#endif
108 spin_lock(&cpustate.lock);
109 cpustate.cached_val = new_state;
110 writel((0xff << 21), cpustate.clr_addr);
111 writel(state, cpustate.set_addr);
112 spin_unlock(&cpustate.lock);
113}
114
115/*
116 * Now all the various file operations that we export.
117 */
118
119static ssize_t cpustate_read(struct file *file, char *buf,
120 size_t count, loff_t * ppos)
121{
122 unsigned char data;
123
124 if (count < 0)
125 return -EFAULT;
126 if (count == 0)
127 return 0;
128
129 data = cpustate_get_state();
130 if (copy_to_user(buf, &data, sizeof(unsigned char)))
131 return -EFAULT;
132 return sizeof(unsigned char);
133}
134
135static ssize_t cpustate_write(struct file *file, const char *buf,
136 size_t count, loff_t * ppos)
137{
138 unsigned char data;
139
140 if (count < 0)
141 return -EFAULT;
142
143 if (count == 0)
144 return 0;
145
146 if (copy_from_user((unsigned char *)&data, buf, sizeof(unsigned char)))
147 return -EFAULT;
148
149 cpustate_set_state(data);
150 return sizeof(unsigned char);
151}
152
153static int cpustate_open(struct inode *inode, struct file *file)
154{
155 int ret;
156
157 lock_kernel();
158 ret = cpustate_get_ref((file->f_flags & O_EXCL));
159 unlock_kernel();
160
161 return ret;
162}
163
164static int cpustate_release(struct inode *inode, struct file *file)
165{
166 return cpustate_free_ref();
167}
168
169static struct platform_driver hdpu_cpustate_driver = {
170 .probe = hdpu_cpustate_probe,
171 .remove = hdpu_cpustate_remove,
172 .driver = {
173 .name = HDPU_CPUSTATE_NAME,
174 .owner = THIS_MODULE,
175 },
176};
177
178/*
179 * The various file operations we support.
180 */
181static const struct file_operations cpustate_fops = {
182 .owner = THIS_MODULE,
183 .open = cpustate_open,
184 .release = cpustate_release,
185 .read = cpustate_read,
186 .write = cpustate_write,
187 .llseek = no_llseek,
188};
189
190static struct miscdevice cpustate_dev = {
191 .minor = MISC_DYNAMIC_MINOR,
192 .name = "sky_cpustate",
193 .fops = &cpustate_fops,
194};
195
196static int hdpu_cpustate_probe(struct platform_device *pdev)
197{
198 struct resource *res;
199 struct proc_dir_entry *proc_de;
200 int ret;
201
202 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
203 if (!res) {
204 printk(KERN_ERR "sky_cpustate: "
205 "Invalid memory resource.\n");
206 return -EINVAL;
207 }
208 cpustate.set_addr = (unsigned long *)res->start;
209 cpustate.clr_addr = (unsigned long *)res->end - 1;
210
211 ret = misc_register(&cpustate_dev);
212 if (ret) {
213 printk(KERN_WARNING "sky_cpustate: "
214 "Unable to register misc device.\n");
215 cpustate.set_addr = NULL;
216 cpustate.clr_addr = NULL;
217 return ret;
218 }
219
220 proc_de = proc_create("sky_cpustate", 0666, NULL, &proc_cpustate);
221 if (!proc_de) {
222 printk(KERN_WARNING "sky_cpustate: "
223 "Unable to create proc entry\n");
224 }
225
226 printk(KERN_INFO "Sky CPU State Driver v" SKY_CPUSTATE_VERSION "\n");
227 return 0;
228}
229
230static int hdpu_cpustate_remove(struct platform_device *pdev)
231{
232 cpustate.set_addr = NULL;
233 cpustate.clr_addr = NULL;
234
235 remove_proc_entry("sky_cpustate", NULL);
236 misc_deregister(&cpustate_dev);
237
238 return 0;
239}
240
241static int __init cpustate_init(void)
242{
243 return platform_driver_register(&hdpu_cpustate_driver);
244}
245
246static void __exit cpustate_exit(void)
247{
248 platform_driver_unregister(&hdpu_cpustate_driver);
249}
250
251module_init(cpustate_init);
252module_exit(cpustate_exit);
253
254MODULE_AUTHOR("Brian Waite");
255MODULE_LICENSE("GPL");
256MODULE_ALIAS("platform:" HDPU_CPUSTATE_NAME);
diff --git a/drivers/misc/hdpuftrs/hdpu_nexus.c b/drivers/misc/hdpuftrs/hdpu_nexus.c
deleted file mode 100644
index ce39fa54949b..000000000000
--- a/drivers/misc/hdpuftrs/hdpu_nexus.c
+++ /dev/null
@@ -1,149 +0,0 @@
1/*
2 * Sky Nexus Register Driver
3 *
4 * Copyright (C) 2002 Brian Waite
5 *
6 * This driver allows reading the Nexus register
7 * It exports the /proc/sky_chassis_id and also
8 * /proc/sky_slot_id pseudo-file for status information.
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version
13 * 2 of the License, or (at your option) any later version.
14 *
15 */
16
17#include <linux/module.h>
18#include <linux/kernel.h>
19#include <linux/proc_fs.h>
20#include <linux/hdpu_features.h>
21#include <linux/platform_device.h>
22#include <linux/seq_file.h>
23#include <asm/io.h>
24
25static int hdpu_nexus_probe(struct platform_device *pdev);
26static int hdpu_nexus_remove(struct platform_device *pdev);
27static int hdpu_slot_id_open(struct inode *inode, struct file *file);
28static int hdpu_slot_id_read(struct seq_file *seq, void *offset);
29static int hdpu_chassis_id_open(struct inode *inode, struct file *file);
30static int hdpu_chassis_id_read(struct seq_file *seq, void *offset);
31
32static struct proc_dir_entry *hdpu_slot_id;
33static struct proc_dir_entry *hdpu_chassis_id;
34static int slot_id = -1;
35static int chassis_id = -1;
36
37static const struct file_operations proc_slot_id = {
38 .open = hdpu_slot_id_open,
39 .read = seq_read,
40 .llseek = seq_lseek,
41 .release = single_release,
42 .owner = THIS_MODULE,
43};
44
45static const struct file_operations proc_chassis_id = {
46 .open = hdpu_chassis_id_open,
47 .read = seq_read,
48 .llseek = seq_lseek,
49 .release = single_release,
50 .owner = THIS_MODULE,
51};
52
53static struct platform_driver hdpu_nexus_driver = {
54 .probe = hdpu_nexus_probe,
55 .remove = hdpu_nexus_remove,
56 .driver = {
57 .name = HDPU_NEXUS_NAME,
58 .owner = THIS_MODULE,
59 },
60};
61
62static int hdpu_slot_id_open(struct inode *inode, struct file *file)
63{
64 return single_open(file, hdpu_slot_id_read, NULL);
65}
66
67static int hdpu_slot_id_read(struct seq_file *seq, void *offset)
68{
69 seq_printf(seq, "%d\n", slot_id);
70 return 0;
71}
72
73static int hdpu_chassis_id_open(struct inode *inode, struct file *file)
74{
75 return single_open(file, hdpu_chassis_id_read, NULL);
76}
77
78static int hdpu_chassis_id_read(struct seq_file *seq, void *offset)
79{
80 seq_printf(seq, "%d\n", chassis_id);
81 return 0;
82}
83
84static int hdpu_nexus_probe(struct platform_device *pdev)
85{
86 struct resource *res;
87 int *nexus_id_addr;
88
89 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
90 if (!res) {
91 printk(KERN_ERR "sky_nexus: "
92 "Invalid memory resource.\n");
93 return -EINVAL;
94 }
95 nexus_id_addr = ioremap(res->start,
96 (unsigned long)(res->end - res->start));
97 if (nexus_id_addr) {
98 slot_id = (*nexus_id_addr >> 8) & 0x1f;
99 chassis_id = *nexus_id_addr & 0xff;
100 iounmap(nexus_id_addr);
101 } else {
102 printk(KERN_ERR "sky_nexus: Could not map slot id\n");
103 }
104
105 hdpu_slot_id = proc_create("sky_slot_id", 0666, NULL, &proc_slot_id);
106 if (!hdpu_slot_id) {
107 printk(KERN_WARNING "sky_nexus: "
108 "Unable to create proc dir entry: sky_slot_id\n");
109 }
110
111 hdpu_chassis_id = proc_create("sky_chassis_id", 0666, NULL,
112 &proc_chassis_id);
113 if (!hdpu_chassis_id)
114 printk(KERN_WARNING "sky_nexus: "
115 "Unable to create proc dir entry: sky_chassis_id\n");
116
117 return 0;
118}
119
120static int hdpu_nexus_remove(struct platform_device *pdev)
121{
122 slot_id = -1;
123 chassis_id = -1;
124
125 remove_proc_entry("sky_slot_id", NULL);
126 remove_proc_entry("sky_chassis_id", NULL);
127
128 hdpu_slot_id = 0;
129 hdpu_chassis_id = 0;
130
131 return 0;
132}
133
134static int __init nexus_init(void)
135{
136 return platform_driver_register(&hdpu_nexus_driver);
137}
138
139static void __exit nexus_exit(void)
140{
141 platform_driver_unregister(&hdpu_nexus_driver);
142}
143
144module_init(nexus_init);
145module_exit(nexus_exit);
146
147MODULE_AUTHOR("Brian Waite");
148MODULE_LICENSE("GPL");
149MODULE_ALIAS("platform:" HDPU_NEXUS_NAME);
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