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-rw-r--r--drivers/misc/Makefile1
-rw-r--r--drivers/misc/c2port/core.c4
-rw-r--r--drivers/misc/ds1682.c6
-rw-r--r--drivers/misc/eeprom/at24.c65
-rw-r--r--drivers/misc/eeprom/at25.c6
-rw-r--r--drivers/misc/eeprom/eeprom.c3
-rw-r--r--drivers/misc/eeprom/max6875.c2
-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
10 files changed, 65 insertions, 428 deletions
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 7b6f7eefdf8d..f12dc3e54402 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/c2port/core.c b/drivers/misc/c2port/core.c
index ed090e77c9cd..19fc7c1cb428 100644
--- a/drivers/misc/c2port/core.c
+++ b/drivers/misc/c2port/core.c
@@ -707,7 +707,7 @@ static ssize_t __c2port_read_flash_data(struct c2port_device *dev,
707 return nread; 707 return nread;
708} 708}
709 709
710static ssize_t c2port_read_flash_data(struct kobject *kobj, 710static ssize_t c2port_read_flash_data(struct file *filp, struct kobject *kobj,
711 struct bin_attribute *attr, 711 struct bin_attribute *attr,
712 char *buffer, loff_t offset, size_t count) 712 char *buffer, loff_t offset, size_t count)
713{ 713{
@@ -824,7 +824,7 @@ static ssize_t __c2port_write_flash_data(struct c2port_device *dev,
824 return nwrite; 824 return nwrite;
825} 825}
826 826
827static ssize_t c2port_write_flash_data(struct kobject *kobj, 827static ssize_t c2port_write_flash_data(struct file *filp, struct kobject *kobj,
828 struct bin_attribute *attr, 828 struct bin_attribute *attr,
829 char *buffer, loff_t offset, size_t count) 829 char *buffer, loff_t offset, size_t count)
830{ 830{
diff --git a/drivers/misc/ds1682.c b/drivers/misc/ds1682.c
index 9197cfc55015..a513f0aa6432 100644
--- a/drivers/misc/ds1682.c
+++ b/drivers/misc/ds1682.c
@@ -140,7 +140,8 @@ static const struct attribute_group ds1682_group = {
140/* 140/*
141 * User data attribute 141 * User data attribute
142 */ 142 */
143static ssize_t ds1682_eeprom_read(struct kobject *kobj, struct bin_attribute *attr, 143static ssize_t ds1682_eeprom_read(struct file *filp, struct kobject *kobj,
144 struct bin_attribute *attr,
144 char *buf, loff_t off, size_t count) 145 char *buf, loff_t off, size_t count)
145{ 146{
146 struct i2c_client *client = kobj_to_i2c_client(kobj); 147 struct i2c_client *client = kobj_to_i2c_client(kobj);
@@ -163,7 +164,8 @@ static ssize_t ds1682_eeprom_read(struct kobject *kobj, struct bin_attribute *at
163 return count; 164 return count;
164} 165}
165 166
166static ssize_t ds1682_eeprom_write(struct kobject *kobj, struct bin_attribute *attr, 167static ssize_t ds1682_eeprom_write(struct file *filp, struct kobject *kobj,
168 struct bin_attribute *attr,
167 char *buf, loff_t off, size_t count) 169 char *buf, loff_t off, size_t count)
168{ 170{
169 struct i2c_client *client = kobj_to_i2c_client(kobj); 171 struct i2c_client *client = kobj_to_i2c_client(kobj);
diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c
index db7d0f21b65d..f7ca3a42b490 100644
--- a/drivers/misc/eeprom/at24.c
+++ b/drivers/misc/eeprom/at24.c
@@ -54,7 +54,7 @@
54struct at24_data { 54struct at24_data {
55 struct at24_platform_data chip; 55 struct at24_platform_data chip;
56 struct memory_accessor macc; 56 struct memory_accessor macc;
57 bool use_smbus; 57 int use_smbus;
58 58
59 /* 59 /*
60 * Lock protects against activities from other Linux tasks, 60 * Lock protects against activities from other Linux tasks,
@@ -184,11 +184,19 @@ static ssize_t at24_eeprom_read(struct at24_data *at24, char *buf,
184 if (count > io_limit) 184 if (count > io_limit)
185 count = io_limit; 185 count = io_limit;
186 186
187 if (at24->use_smbus) { 187 switch (at24->use_smbus) {
188 case I2C_SMBUS_I2C_BLOCK_DATA:
188 /* Smaller eeproms can work given some SMBus extension calls */ 189 /* Smaller eeproms can work given some SMBus extension calls */
189 if (count > I2C_SMBUS_BLOCK_MAX) 190 if (count > I2C_SMBUS_BLOCK_MAX)
190 count = I2C_SMBUS_BLOCK_MAX; 191 count = I2C_SMBUS_BLOCK_MAX;
191 } else { 192 break;
193 case I2C_SMBUS_WORD_DATA:
194 count = 2;
195 break;
196 case I2C_SMBUS_BYTE_DATA:
197 count = 1;
198 break;
199 default:
192 /* 200 /*
193 * When we have a better choice than SMBus calls, use a 201 * When we have a better choice than SMBus calls, use a
194 * combined I2C message. Write address; then read up to 202 * combined I2C message. Write address; then read up to
@@ -219,10 +227,27 @@ static ssize_t at24_eeprom_read(struct at24_data *at24, char *buf,
219 timeout = jiffies + msecs_to_jiffies(write_timeout); 227 timeout = jiffies + msecs_to_jiffies(write_timeout);
220 do { 228 do {
221 read_time = jiffies; 229 read_time = jiffies;
222 if (at24->use_smbus) { 230 switch (at24->use_smbus) {
231 case I2C_SMBUS_I2C_BLOCK_DATA:
223 status = i2c_smbus_read_i2c_block_data(client, offset, 232 status = i2c_smbus_read_i2c_block_data(client, offset,
224 count, buf); 233 count, buf);
225 } else { 234 break;
235 case I2C_SMBUS_WORD_DATA:
236 status = i2c_smbus_read_word_data(client, offset);
237 if (status >= 0) {
238 buf[0] = status & 0xff;
239 buf[1] = status >> 8;
240 status = count;
241 }
242 break;
243 case I2C_SMBUS_BYTE_DATA:
244 status = i2c_smbus_read_byte_data(client, offset);
245 if (status >= 0) {
246 buf[0] = status;
247 status = count;
248 }
249 break;
250 default:
226 status = i2c_transfer(client->adapter, msg, 2); 251 status = i2c_transfer(client->adapter, msg, 2);
227 if (status == 2) 252 if (status == 2)
228 status = count; 253 status = count;
@@ -274,7 +299,8 @@ static ssize_t at24_read(struct at24_data *at24,
274 return retval; 299 return retval;
275} 300}
276 301
277static ssize_t at24_bin_read(struct kobject *kobj, struct bin_attribute *attr, 302static ssize_t at24_bin_read(struct file *filp, struct kobject *kobj,
303 struct bin_attribute *attr,
278 char *buf, loff_t off, size_t count) 304 char *buf, loff_t off, size_t count)
279{ 305{
280 struct at24_data *at24; 306 struct at24_data *at24;
@@ -395,7 +421,8 @@ static ssize_t at24_write(struct at24_data *at24, const char *buf, loff_t off,
395 return retval; 421 return retval;
396} 422}
397 423
398static ssize_t at24_bin_write(struct kobject *kobj, struct bin_attribute *attr, 424static ssize_t at24_bin_write(struct file *filp, struct kobject *kobj,
425 struct bin_attribute *attr,
399 char *buf, loff_t off, size_t count) 426 char *buf, loff_t off, size_t count)
400{ 427{
401 struct at24_data *at24; 428 struct at24_data *at24;
@@ -434,7 +461,7 @@ static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id)
434{ 461{
435 struct at24_platform_data chip; 462 struct at24_platform_data chip;
436 bool writable; 463 bool writable;
437 bool use_smbus = false; 464 int use_smbus = 0;
438 struct at24_data *at24; 465 struct at24_data *at24;
439 int err; 466 int err;
440 unsigned i, num_addresses; 467 unsigned i, num_addresses;
@@ -475,12 +502,19 @@ static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id)
475 err = -EPFNOSUPPORT; 502 err = -EPFNOSUPPORT;
476 goto err_out; 503 goto err_out;
477 } 504 }
478 if (!i2c_check_functionality(client->adapter, 505 if (i2c_check_functionality(client->adapter,
479 I2C_FUNC_SMBUS_READ_I2C_BLOCK)) { 506 I2C_FUNC_SMBUS_READ_I2C_BLOCK)) {
507 use_smbus = I2C_SMBUS_I2C_BLOCK_DATA;
508 } else if (i2c_check_functionality(client->adapter,
509 I2C_FUNC_SMBUS_READ_WORD_DATA)) {
510 use_smbus = I2C_SMBUS_WORD_DATA;
511 } else if (i2c_check_functionality(client->adapter,
512 I2C_FUNC_SMBUS_READ_BYTE_DATA)) {
513 use_smbus = I2C_SMBUS_BYTE_DATA;
514 } else {
480 err = -EPFNOSUPPORT; 515 err = -EPFNOSUPPORT;
481 goto err_out; 516 goto err_out;
482 } 517 }
483 use_smbus = true;
484 } 518 }
485 519
486 if (chip.flags & AT24_FLAG_TAKE8ADDR) 520 if (chip.flags & AT24_FLAG_TAKE8ADDR)
@@ -566,11 +600,16 @@ static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id)
566 dev_info(&client->dev, "%zu byte %s EEPROM %s\n", 600 dev_info(&client->dev, "%zu byte %s EEPROM %s\n",
567 at24->bin.size, client->name, 601 at24->bin.size, client->name,
568 writable ? "(writable)" : "(read-only)"); 602 writable ? "(writable)" : "(read-only)");
603 if (use_smbus == I2C_SMBUS_WORD_DATA ||
604 use_smbus == I2C_SMBUS_BYTE_DATA) {
605 dev_notice(&client->dev, "Falling back to %s reads, "
606 "performance will suffer\n", use_smbus ==
607 I2C_SMBUS_WORD_DATA ? "word" : "byte");
608 }
569 dev_dbg(&client->dev, 609 dev_dbg(&client->dev,
570 "page_size %d, num_addresses %d, write_max %d%s\n", 610 "page_size %d, num_addresses %d, write_max %d, use_smbus %d\n",
571 chip.page_size, num_addresses, 611 chip.page_size, num_addresses,
572 at24->write_max, 612 at24->write_max, use_smbus);
573 use_smbus ? ", use_smbus" : "");
574 613
575 /* export data to kernel code */ 614 /* export data to kernel code */
576 if (chip.setup) 615 if (chip.setup)
diff --git a/drivers/misc/eeprom/at25.c b/drivers/misc/eeprom/at25.c
index d194212a41f6..c627e4174ccd 100644
--- a/drivers/misc/eeprom/at25.c
+++ b/drivers/misc/eeprom/at25.c
@@ -126,7 +126,8 @@ at25_ee_read(
126} 126}
127 127
128static ssize_t 128static ssize_t
129at25_bin_read(struct kobject *kobj, struct bin_attribute *bin_attr, 129at25_bin_read(struct file *filp, struct kobject *kobj,
130 struct bin_attribute *bin_attr,
130 char *buf, loff_t off, size_t count) 131 char *buf, loff_t off, size_t count)
131{ 132{
132 struct device *dev; 133 struct device *dev;
@@ -253,7 +254,8 @@ at25_ee_write(struct at25_data *at25, const char *buf, loff_t off,
253} 254}
254 255
255static ssize_t 256static ssize_t
256at25_bin_write(struct kobject *kobj, struct bin_attribute *bin_attr, 257at25_bin_write(struct file *filp, struct kobject *kobj,
258 struct bin_attribute *bin_attr,
257 char *buf, loff_t off, size_t count) 259 char *buf, loff_t off, size_t count)
258{ 260{
259 struct device *dev; 261 struct device *dev;
diff --git a/drivers/misc/eeprom/eeprom.c b/drivers/misc/eeprom/eeprom.c
index e306a8cd2f96..45060ddc4e59 100644
--- a/drivers/misc/eeprom/eeprom.c
+++ b/drivers/misc/eeprom/eeprom.c
@@ -81,7 +81,8 @@ exit:
81 mutex_unlock(&data->update_lock); 81 mutex_unlock(&data->update_lock);
82} 82}
83 83
84static ssize_t eeprom_read(struct kobject *kobj, struct bin_attribute *bin_attr, 84static ssize_t eeprom_read(struct file *filp, struct kobject *kobj,
85 struct bin_attribute *bin_attr,
85 char *buf, loff_t off, size_t count) 86 char *buf, loff_t off, size_t count)
86{ 87{
87 struct i2c_client *client = to_i2c_client(container_of(kobj, struct device, kobj)); 88 struct i2c_client *client = to_i2c_client(container_of(kobj, struct device, kobj));
diff --git a/drivers/misc/eeprom/max6875.c b/drivers/misc/eeprom/max6875.c
index fe2909278507..5653a3ce0517 100644
--- a/drivers/misc/eeprom/max6875.c
+++ b/drivers/misc/eeprom/max6875.c
@@ -107,7 +107,7 @@ exit_up:
107 mutex_unlock(&data->update_lock); 107 mutex_unlock(&data->update_lock);
108} 108}
109 109
110static ssize_t max6875_read(struct kobject *kobj, 110static ssize_t max6875_read(struct file *filp, struct kobject *kobj,
111 struct bin_attribute *bin_attr, 111 struct bin_attribute *bin_attr,
112 char *buf, loff_t off, size_t count) 112 char *buf, loff_t off, size_t count)
113{ 113{
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);
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-29 00:26:32 -0500