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path: root/drivers/char/tlclk.c
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Diffstat (limited to 'drivers/char/tlclk.c')
-rw-r--r--drivers/char/tlclk.c157
1 files changed, 72 insertions, 85 deletions
diff --git a/drivers/char/tlclk.c b/drivers/char/tlclk.c
index e95e0ab0bd87..b381ea7e85d2 100644
--- a/drivers/char/tlclk.c
+++ b/drivers/char/tlclk.c
@@ -42,11 +42,12 @@
#include <linux/sysfs.h>
#include <linux/device.h>
#include <linux/miscdevice.h>
-#include <linux/platform_device.h>
+#include <linux/device/faux.h>
#include <asm/io.h> /* inb/outb */
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
MODULE_AUTHOR("Sebastien Bouchard <sebastien.bouchard@ca.kontron.com>");
+MODULE_DESCRIPTION("Telecom Clock driver for Intel NetStructure(tm) MPCBL0010");
MODULE_LICENSE("GPL");
/*Hardware Reset of the PLL */
@@ -184,9 +185,8 @@ static unsigned int telclk_interrupt;
static int int_events; /* Event that generate a interrupt */
static int got_event; /* if events processing have been done */
-static void switchover_timeout(unsigned long data);
-static struct timer_list switchover_timer =
- TIMER_INITIALIZER(switchover_timeout , 0, 0);
+static void switchover_timeout(struct timer_list *t);
+static struct timer_list switchover_timer;
static unsigned long tlclk_timer_data;
static struct tlclk_alarms *alarm_events;
@@ -222,7 +222,7 @@ static int tlclk_open(struct inode *inode, struct file *filp)
/* This device is wired through the FPGA IO space of the ATCA blade
* we can't share this IRQ */
result = request_irq(telclk_interrupt, &tlclk_interrupt,
- IRQF_DISABLED, "telco_clock", tlclk_interrupt);
+ 0, "telco_clock", tlclk_interrupt);
if (result == -EBUSY)
printk(KERN_ERR "tlclk: Interrupt can't be reserved.\n");
else
@@ -507,28 +507,28 @@ static ssize_t store_select_amcb2_transmit_clock(struct device *d,
val = (unsigned char)tmp;
spin_lock_irqsave(&event_lock, flags);
- if ((val == CLK_8kHz) || (val == CLK_16_384MHz)) {
- SET_PORT_BITS(TLCLK_REG3, 0xc7, 0x28);
- SET_PORT_BITS(TLCLK_REG1, 0xfb, ~val);
- } else if (val >= CLK_8_592MHz) {
- SET_PORT_BITS(TLCLK_REG3, 0xc7, 0x38);
- switch (val) {
- case CLK_8_592MHz:
- SET_PORT_BITS(TLCLK_REG0, 0xfc, 2);
- break;
- case CLK_11_184MHz:
- SET_PORT_BITS(TLCLK_REG0, 0xfc, 0);
- break;
- case CLK_34_368MHz:
- SET_PORT_BITS(TLCLK_REG0, 0xfc, 3);
- break;
- case CLK_44_736MHz:
- SET_PORT_BITS(TLCLK_REG0, 0xfc, 1);
- break;
- }
- } else
- SET_PORT_BITS(TLCLK_REG3, 0xc7, val << 3);
-
+ if ((val == CLK_8kHz) || (val == CLK_16_384MHz)) {
+ SET_PORT_BITS(TLCLK_REG3, 0xc7, 0x28);
+ SET_PORT_BITS(TLCLK_REG1, 0xfb, ~val);
+ } else if (val >= CLK_8_592MHz) {
+ SET_PORT_BITS(TLCLK_REG3, 0xc7, 0x38);
+ switch (val) {
+ case CLK_8_592MHz:
+ SET_PORT_BITS(TLCLK_REG0, 0xfc, 2);
+ break;
+ case CLK_11_184MHz:
+ SET_PORT_BITS(TLCLK_REG0, 0xfc, 0);
+ break;
+ case CLK_34_368MHz:
+ SET_PORT_BITS(TLCLK_REG0, 0xfc, 3);
+ break;
+ case CLK_44_736MHz:
+ SET_PORT_BITS(TLCLK_REG0, 0xfc, 1);
+ break;
+ }
+ } else {
+ SET_PORT_BITS(TLCLK_REG3, 0xc7, val << 3);
+ }
spin_unlock_irqrestore(&event_lock, flags);
return strnlen(buf, count);
@@ -549,27 +549,28 @@ static ssize_t store_select_amcb1_transmit_clock(struct device *d,
val = (unsigned char)tmp;
spin_lock_irqsave(&event_lock, flags);
- if ((val == CLK_8kHz) || (val == CLK_16_384MHz)) {
- SET_PORT_BITS(TLCLK_REG3, 0xf8, 0x5);
- SET_PORT_BITS(TLCLK_REG1, 0xfb, ~val);
- } else if (val >= CLK_8_592MHz) {
- SET_PORT_BITS(TLCLK_REG3, 0xf8, 0x7);
- switch (val) {
- case CLK_8_592MHz:
- SET_PORT_BITS(TLCLK_REG0, 0xfc, 2);
- break;
- case CLK_11_184MHz:
- SET_PORT_BITS(TLCLK_REG0, 0xfc, 0);
- break;
- case CLK_34_368MHz:
- SET_PORT_BITS(TLCLK_REG0, 0xfc, 3);
- break;
- case CLK_44_736MHz:
- SET_PORT_BITS(TLCLK_REG0, 0xfc, 1);
- break;
- }
- } else
- SET_PORT_BITS(TLCLK_REG3, 0xf8, val);
+ if ((val == CLK_8kHz) || (val == CLK_16_384MHz)) {
+ SET_PORT_BITS(TLCLK_REG3, 0xf8, 0x5);
+ SET_PORT_BITS(TLCLK_REG1, 0xfb, ~val);
+ } else if (val >= CLK_8_592MHz) {
+ SET_PORT_BITS(TLCLK_REG3, 0xf8, 0x7);
+ switch (val) {
+ case CLK_8_592MHz:
+ SET_PORT_BITS(TLCLK_REG0, 0xfc, 2);
+ break;
+ case CLK_11_184MHz:
+ SET_PORT_BITS(TLCLK_REG0, 0xfc, 0);
+ break;
+ case CLK_34_368MHz:
+ SET_PORT_BITS(TLCLK_REG0, 0xfc, 3);
+ break;
+ case CLK_44_736MHz:
+ SET_PORT_BITS(TLCLK_REG0, 0xfc, 1);
+ break;
+ }
+ } else {
+ SET_PORT_BITS(TLCLK_REG3, 0xf8, val);
+ }
spin_unlock_irqrestore(&event_lock, flags);
return strnlen(buf, count);
@@ -741,7 +742,7 @@ static ssize_t store_reset (struct device *d,
static DEVICE_ATTR(reset, (S_IWUSR|S_IWGRP), NULL, store_reset);
-static struct attribute *tlclk_sysfs_entries[] = {
+static struct attribute *tlclk_attrs[] = {
&dev_attr_current_ref.attr,
&dev_attr_telclock_version.attr,
&dev_attr_alarms.attr,
@@ -765,29 +766,29 @@ static struct attribute *tlclk_sysfs_entries[] = {
&dev_attr_reset.attr,
NULL
};
+ATTRIBUTE_GROUPS(tlclk);
-static struct attribute_group tlclk_attribute_group = {
- .name = NULL, /* put in device directory */
- .attrs = tlclk_sysfs_entries,
-};
-
-static struct platform_device *tlclk_device;
+static struct faux_device *tlclk_device;
static int __init tlclk_init(void)
{
int ret;
+ telclk_interrupt = (inb(TLCLK_REG7) & 0x0f);
+
+ alarm_events = kzalloc( sizeof(struct tlclk_alarms), GFP_KERNEL);
+ if (!alarm_events) {
+ ret = -ENOMEM;
+ goto out1;
+ }
+
ret = register_chrdev(tlclk_major, "telco_clock", &tlclk_fops);
if (ret < 0) {
printk(KERN_ERR "tlclk: can't get major %d.\n", tlclk_major);
+ kfree(alarm_events);
return ret;
}
tlclk_major = ret;
- alarm_events = kzalloc( sizeof(struct tlclk_alarms), GFP_KERNEL);
- if (!alarm_events) {
- ret = -ENOMEM;
- goto out1;
- }
/* Read telecom clock IRQ number (Set by BIOS) */
if (!request_region(TLCLK_BASE, 8, "telco_clock")) {
@@ -796,7 +797,6 @@ static int __init tlclk_init(void)
ret = -EBUSY;
goto out2;
}
- telclk_interrupt = (inb(TLCLK_REG7) & 0x0f);
if (0x0F == telclk_interrupt ) { /* not MCPBL0010 ? */
printk(KERN_ERR "telclk_interrupt = 0x%x non-mcpbl0010 hw.\n",
@@ -805,7 +805,7 @@ static int __init tlclk_init(void)
goto out3;
}
- init_timer(&switchover_timer);
+ timer_setup(&switchover_timer, switchover_timeout, 0);
ret = misc_register(&tlclk_miscdev);
if (ret < 0) {
@@ -813,51 +813,39 @@ static int __init tlclk_init(void)
goto out3;
}
- tlclk_device = platform_device_register_simple("telco_clock",
- -1, NULL, 0);
- if (IS_ERR(tlclk_device)) {
- printk(KERN_ERR "tlclk: platform_device_register failed.\n");
- ret = PTR_ERR(tlclk_device);
+ tlclk_device = faux_device_create_with_groups("telco_clock", NULL, NULL, tlclk_groups);
+ if (!tlclk_device) {
+ ret = -ENODEV;
goto out4;
}
- ret = sysfs_create_group(&tlclk_device->dev.kobj,
- &tlclk_attribute_group);
- if (ret) {
- printk(KERN_ERR "tlclk: failed to create sysfs device attributes.\n");
- goto out5;
- }
-
return 0;
-out5:
- platform_device_unregister(tlclk_device);
out4:
misc_deregister(&tlclk_miscdev);
out3:
release_region(TLCLK_BASE, 8);
out2:
kfree(alarm_events);
-out1:
unregister_chrdev(tlclk_major, "telco_clock");
+out1:
return ret;
}
static void __exit tlclk_cleanup(void)
{
- sysfs_remove_group(&tlclk_device->dev.kobj, &tlclk_attribute_group);
- platform_device_unregister(tlclk_device);
+ faux_device_destroy(tlclk_device);
misc_deregister(&tlclk_miscdev);
unregister_chrdev(tlclk_major, "telco_clock");
release_region(TLCLK_BASE, 8);
- del_timer_sync(&switchover_timer);
+ timer_delete_sync(&switchover_timer);
kfree(alarm_events);
}
-static void switchover_timeout(unsigned long data)
+static void switchover_timeout(struct timer_list *unused)
{
- unsigned long flags = *(unsigned long *) data;
+ unsigned long flags = tlclk_timer_data;
if ((flags & 1)) {
if ((inb(TLCLK_REG1) & 0x08) != (flags & 0x08))
@@ -868,7 +856,7 @@ static void switchover_timeout(unsigned long data)
}
/* Alarm processing is done, wake up read task */
- del_timer(&switchover_timer);
+ timer_delete(&switchover_timer);
got_event = 1;
wake_up(&wq);
}
@@ -922,7 +910,6 @@ static irqreturn_t tlclk_interrupt(int irq, void *dev_id)
/* TIMEOUT in ~10ms */
switchover_timer.expires = jiffies + msecs_to_jiffies(10);
tlclk_timer_data = inb(TLCLK_REG1);
- switchover_timer.data = (unsigned long) &tlclk_timer_data;
mod_timer(&switchover_timer, switchover_timer.expires);
} else {
got_event = 1;
generated by cgit (git 2.34.1) at 2025-12-25 08:19:23 +0000