The patch titled
chardev: GPIO for SCx200 & PC-8736x: add 'v' command to device-file
has been added to the -mm tree. Its filename is
chardev-gpio-for-scx200-pc-8736x-add-v-command.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: chardev: GPIO for SCx200 & PC-8736x: add 'v' command to device-file
From: Jim Cromie <jim.cromie@xxxxxxxxx>
Add a new driver command: 'v' which calls gpio_dump() on the pin. The output
goes to the log, like all other INFO messages in the original driver. Giving
the user control over the feedback they 'need' is construed to be a
user-friendly feature, and allows us (later) to dial down many INFO messages
to DEBUG log-level.
Signed-off-by: Jim Cromie <jim.cromie@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
arch/i386/kernel/scx200.c | 3 +--
drivers/char/scx200_gpio.c | 16 ++++++++++++++++
2 files changed, 17 insertions(+), 2 deletions(-)
diff -puN arch/i386/kernel/scx200.c~chardev-gpio-for-scx200-pc-8736x-add-v-command arch/i386/kernel/scx200.c
--- a/arch/i386/kernel/scx200.c~chardev-gpio-for-scx200-pc-8736x-add-v-command
+++ a/arch/i386/kernel/scx200.c
@@ -105,7 +105,6 @@ u32 scx200_gpio_configure(unsigned index
return config;
}
-#if 0
void scx200_gpio_dump(unsigned index)
{
u32 config = scx200_gpio_configure(index, ~0, 0);
@@ -120,7 +119,6 @@ void scx200_gpio_dump(unsigned index)
(config & 32) ? "HI" : "LO", /* trigger on rising/falling edge */
(config & 64) ? "DEBOUNCE" : ""); /* debounce */
}
-#endif /* 0 */
static int __init scx200_init(void)
{
@@ -141,4 +139,5 @@ module_exit(scx200_cleanup);
EXPORT_SYMBOL(scx200_gpio_base);
EXPORT_SYMBOL(scx200_gpio_shadow);
EXPORT_SYMBOL(scx200_gpio_configure);
+EXPORT_SYMBOL(scx200_gpio_dump);
EXPORT_SYMBOL(scx200_cb_base);
diff -puN drivers/char/scx200_gpio.c~chardev-gpio-for-scx200-pc-8736x-add-v-command drivers/char/scx200_gpio.c
--- a/drivers/char/scx200_gpio.c~chardev-gpio-for-scx200-pc-8736x-add-v-command
+++ a/drivers/char/scx200_gpio.c
@@ -41,6 +41,7 @@ static ssize_t scx200_gpio_write(struct
{
unsigned m = iminor(file->f_dentry->d_inode);
size_t i;
+ int err = 0;
for (i = 0; i < len; ++i) {
char c;
@@ -77,8 +78,23 @@ static ssize_t scx200_gpio_write(struct
printk(KERN_INFO NAME ": GPIO%d pull up disabled\n", m);
scx200_gpio_configure(m, ~4, 0);
break;
+
+ case 'v':
+ /* View Current pin settings */
+ scx200_gpio_dump(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);
+ err++;
}
}
+ if (err)
+ return -EINVAL; /* full string handled, report error */
return len;
}
_
Patches currently in -mm which might be from jim.cromie@xxxxxxxxx are
chardev-gpio-for-scx200-pc-8736x-whitespace.patch
chardev-gpio-for-scx200-pc-8736x-modernize.patch
chardev-gpio-for-scx200-pc-8736x-add-platforn_device.patch
chardev-gpio-for-scx200-pc-8736x-device-minor.patch
chardev-gpio-for-scx200-pc-8736x-put-gpio_dump.patch
chardev-gpio-for-scx200-pc-8736x-add-v-command.patch
chardev-gpio-for-scx200-pc-8736x-refactor-scx200_probe.patch
chardev-gpio-for-scx200-pc-8736x-add-gpio-ops.patch
chardev-gpio-for-scx200-pc-8736x-dispatch.patch
chardev-gpio-for-scx200-pc-8736x-add-empty.patch
chardev-gpio-for-scx200-pc-8736x-migrate-file-ops.patch
chardev-gpio-for-scx200-pc-8736x-migrate-gpio_dump.patch
chardev-gpio-for-scx200-pc-8736x-add-new-pc8736x_gpio.patch
chardev-gpio-for-scx200-pc-8736x-add-platform_device.patch
chardev-gpio-for-scx200-pc-8736x-use-dev_dbg.patch
chardev-gpio-for-scx200-pc-8736x-fix-gpio_current.patch
chardev-gpio-for-scx200-pc-8736x-replace-spinlocks.patch
chardev-gpio-for-scx200-pc-8736x-display-pin.patch
chardev-gpio-for-scx200-pc-8736x-add-proper.patch
chardev-gpio-for-scx200-pc-8736x-add-sysfs-gpio.patch
generic-time-add-macro-to-simplify-hide-mask.patch
-
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