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-rw-r--r--drivers/char/nsc_gpio.c45
-rw-r--r--drivers/char/pc8736x_gpio.c3
-rw-r--r--drivers/char/scx200_gpio.c11
-rw-r--r--include/linux/nsc_gpio.h6
4 files changed, 34 insertions, 31 deletions
diff --git a/drivers/char/nsc_gpio.c b/drivers/char/nsc_gpio.c
index 929d68486c1..d0b5d65a73f 100644
--- a/drivers/char/nsc_gpio.c
+++ b/drivers/char/nsc_gpio.c
@@ -14,22 +14,27 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/nsc_gpio.h>
+#include <linux/platform_device.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#define NAME "nsc_gpio"
-void nsc_gpio_dump(unsigned index, u32 config)
+void nsc_gpio_dump(struct nsc_gpio_ops *amp, unsigned index)
{
- printk(KERN_INFO NAME ": GPIO-%02u: 0x%08lx %s %s %s %s %s %s %s\n",
- index, (unsigned long)config,
- (config & 1) ? "OE" : "TS", /* output-enabled/tristate */
- (config & 2) ? "PP" : "OD", /* push pull / open drain */
- (config & 4) ? "PUE" : "PUD", /* pull up enabled/disabled */
- (config & 8) ? "LOCKED" : "", /* locked / unlocked */
- (config & 16) ? "LEVEL" : "EDGE",/* level/edge input */
- (config & 32) ? "HI" : "LO", /* trigger on rise/fall edge */
- (config & 64) ? "DEBOUNCE" : ""); /* debounce */
+ /* retrieve current config w/o changing it */
+ u32 config = amp->gpio_config(index, ~0, 0);
+
+ /* user requested via 'v' command, so its INFO */
+ dev_info(amp->dev, "io%02u: 0x%04x %s %s %s %s %s %s %s\n",
+ index, config,
+ (config & 1) ? "OE" : "TS", /* output-enabled/tristate */
+ (config & 2) ? "PP" : "OD", /* push pull / open drain */
+ (config & 4) ? "PUE" : "PUD", /* pull up enabled/disabled */
+ (config & 8) ? "LOCKED" : "", /* locked / unlocked */
+ (config & 16) ? "LEVEL" : "EDGE",/* level/edge input */
+ (config & 32) ? "HI" : "LO", /* trigger on rise/fall edge */
+ (config & 64) ? "DEBOUNCE" : ""); /* debounce */
}
ssize_t nsc_gpio_write(struct file *file, const char __user *data,
@@ -37,6 +42,7 @@ ssize_t nsc_gpio_write(struct file *file, const char __user *data,
{
unsigned m = iminor(file->f_dentry->d_inode);
struct nsc_gpio_ops *amp = file->private_data;
+ struct device *dev = amp->dev;
size_t i;
int err = 0;
@@ -52,42 +58,41 @@ ssize_t nsc_gpio_write(struct file *file, const char __user *data,
amp->gpio_set(m, 1);
break;
case 'O':
- printk(KERN_INFO NAME ": GPIO%d output enabled\n", m);
+ dev_dbg(dev, "GPIO%d output enabled\n", m);
amp->gpio_config(m, ~1, 1);
break;
case 'o':
- printk(KERN_INFO NAME ": GPIO%d output disabled\n", m);
+ dev_dbg(dev, "GPIO%d output disabled\n", m);
amp->gpio_config(m, ~1, 0);
break;
case 'T':
- printk(KERN_INFO NAME ": GPIO%d output is push pull\n",
+ dev_dbg(dev, "GPIO%d output is push pull\n",
m);
amp->gpio_config(m, ~2, 2);
break;
case 't':
- printk(KERN_INFO NAME ": GPIO%d output is open drain\n",
+ dev_dbg(dev, "GPIO%d output is open drain\n",
m);
amp->gpio_config(m, ~2, 0);
break;
case 'P':
- printk(KERN_INFO NAME ": GPIO%d pull up enabled\n", m);
+ dev_dbg(dev, "GPIO%d pull up enabled\n", m);
amp->gpio_config(m, ~4, 4);
break;
case 'p':
- printk(KERN_INFO NAME ": GPIO%d pull up disabled\n", m);
+ dev_dbg(dev, "GPIO%d pull up disabled\n", m);
amp->gpio_config(m, ~4, 0);
break;
case 'v':
/* View Current pin settings */
- amp->gpio_dump(m);
+ amp->gpio_dump(amp, m);
break;
case '\n':
/* end of settings string, do nothing */
break;
default:
- printk(KERN_ERR NAME
- ": GPIO-%2d bad setting: chr<0x%2x>\n", m,
- (int)c);
+ dev_err(dev, "io%2d bad setting: chr<0x%2x>\n",
+ m, (int)c);
err++;
}
}
diff --git a/drivers/char/pc8736x_gpio.c b/drivers/char/pc8736x_gpio.c
index b16fbef816c..48ff1fc8b06 100644
--- a/drivers/char/pc8736x_gpio.c
+++ b/drivers/char/pc8736x_gpio.c
@@ -207,8 +207,6 @@ static void pc8736x_gpio_change(unsigned index)
pc8736x_gpio_set(index, !pc8736x_gpio_get(index));
}
-extern void nsc_gpio_dump(unsigned iminor);
-
static struct nsc_gpio_ops pc8736x_access = {
.owner = THIS_MODULE,
.gpio_config = pc8736x_gpio_configure,
@@ -260,6 +258,7 @@ static int __init pc8736x_gpio_init(void)
dev_err(&pdev->dev, "no device found\n");
goto undo_platform_dev_add;
}
+ pc8736x_access.dev = &pdev->dev;
/* Verify that chip and it's GPIO unit are both enabled.
My BIOS does this, so I take minimum action here
diff --git a/drivers/char/scx200_gpio.c b/drivers/char/scx200_gpio.c
index 442367b3f5d..5a280a33040 100644
--- a/drivers/char/scx200_gpio.c
+++ b/drivers/char/scx200_gpio.c
@@ -35,14 +35,6 @@ static int major = 0; /* default to dynamic major */
module_param(major, int, 0);
MODULE_PARM_DESC(major, "Major device number");
-extern void nsc_gpio_dump(unsigned index);
-
-extern ssize_t nsc_gpio_write(struct file *file, const char __user *data,
- size_t len, loff_t *ppos);
-
-extern ssize_t nsc_gpio_read(struct file *file, char __user *buf,
- size_t len, loff_t *ppos);
-
struct nsc_gpio_ops scx200_access = {
.owner = THIS_MODULE,
.gpio_config = scx200_gpio_configure,
@@ -101,6 +93,9 @@ static int __init scx200_gpio_init(void)
if (rc)
goto undo_malloc;
+ /* nsc_gpio uses dev_dbg(), so needs this */
+ scx200_access.dev = &pdev->dev;
+
if (major)
rc = register_chrdev_region(dev, num_pins, "scx200_gpio");
else {
diff --git a/include/linux/nsc_gpio.h b/include/linux/nsc_gpio.h
index 27bf66f7386..135742cfada 100644
--- a/include/linux/nsc_gpio.h
+++ b/include/linux/nsc_gpio.h
@@ -22,13 +22,14 @@
struct nsc_gpio_ops {
struct module* owner;
u32 (*gpio_config) (unsigned iminor, u32 mask, u32 bits);
- void (*gpio_dump) (unsigned iminor);
+ void (*gpio_dump) (struct nsc_gpio_ops *amp, unsigned iminor);
int (*gpio_get) (unsigned iminor);
void (*gpio_set) (unsigned iminor, int state);
void (*gpio_set_high)(unsigned iminor);
void (*gpio_set_low) (unsigned iminor);
void (*gpio_change) (unsigned iminor);
int (*gpio_current) (unsigned iminor);
+ struct device* dev; /* for dev_dbg() support, set in init */
};
extern ssize_t nsc_gpio_write(struct file *file, const char __user *data,
@@ -36,3 +37,6 @@ extern ssize_t nsc_gpio_write(struct file *file, const char __user *data,
extern ssize_t nsc_gpio_read(struct file *file, char __user *buf,
size_t len, loff_t *ppos);
+
+extern void nsc_gpio_dump(struct nsc_gpio_ops *amp, unsigned index);
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-16 20:34:16 +0000