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Message-Id: <20231219-sam-sparc32-sunset-v3-v1-4-64bb44b598c5@ravnborg.org>
Date: Tue, 19 Dec 2023 23:03:09 +0100
From: Sam Ravnborg via B4 Relay <devnull+sam.ravnborg.org@...nel.org>
To: "David S. Miller" <davem@...emloft.net>,
Arnd Bergmann <arnd@...nel.org>, Andreas Larsson <andreas@...sler.com>
Cc: Helge Deller <deller@....de>, Alexander Viro <viro@...iv.linux.org.uk>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Alan Stern <stern@...land.harvard.edu>, Jaroslav Kysela <perex@...ex.cz>,
Takashi Iwai <tiwai@...e.com>, sparclinux@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
linux-sound@...r.kernel.org, Sam Ravnborg <sam@...nborg.org>
Subject: [PATCH 04/27] sparc32: Drop sun4m specific led driver
From: Sam Ravnborg <sam@...nborg.org>
The led driver is only relevant for the sun4m machines.
Signed-off-by: Sam Ravnborg <sam@...nborg.org>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Arnd Bergmann <arnd@...nel.org>
Cc: Andreas Larsson <andreas@...sler.com>
---
arch/sparc/Kconfig | 9 ---
arch/sparc/kernel/Makefile | 1 -
arch/sparc/kernel/led.c | 146 ---------------------------------------------
3 files changed, 156 deletions(-)
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 54c91431724b..1520f68e944a 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -331,15 +331,6 @@ config SUN_PM
Enable power management and CPU standby features on supported
SPARC platforms.
-config SPARC_LED
- tristate "Sun4m LED driver"
- depends on SPARC32
- help
- This driver toggles the front-panel LED on sun4m systems
- in a user-specifiable manner. Its state can be probed
- by reading /proc/led and its blinking mode can be changed
- via writes to /proc/led
-
config SERIAL_CONSOLE
bool
depends on SPARC32
diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile
index 0984bb6f0f17..95687af45d20 100644
--- a/arch/sparc/kernel/Makefile
+++ b/arch/sparc/kernel/Makefile
@@ -90,7 +90,6 @@ obj-y += termios.o
obj-$(CONFIG_MODULES) += module.o
obj-$(CONFIG_MODULES) += sparc_ksyms.o
-obj-$(CONFIG_SPARC_LED) += led.o
obj-$(CONFIG_KGDB) += kgdb_$(BITS).o
obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o
diff --git a/arch/sparc/kernel/led.c b/arch/sparc/kernel/led.c
deleted file mode 100644
index ab657b359789..000000000000
--- a/arch/sparc/kernel/led.c
+++ /dev/null
@@ -1,146 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/jiffies.h>
-#include <linux/timer.h>
-#include <linux/uaccess.h>
-#include <linux/sched/loadavg.h>
-
-#include <asm/auxio.h>
-
-#define LED_MAX_LENGTH 8 /* maximum chars written to proc file */
-
-static inline void led_toggle(void)
-{
- unsigned char val = get_auxio();
- unsigned char on, off;
-
- if (val & AUXIO_LED) {
- on = 0;
- off = AUXIO_LED;
- } else {
- on = AUXIO_LED;
- off = 0;
- }
-
- set_auxio(on, off);
-}
-
-static struct timer_list led_blink_timer;
-static unsigned long led_blink_timer_timeout;
-
-static void led_blink(struct timer_list *unused)
-{
- unsigned long timeout = led_blink_timer_timeout;
-
- led_toggle();
-
- /* reschedule */
- if (!timeout) { /* blink according to load */
- led_blink_timer.expires = jiffies +
- ((1 + (avenrun[0] >> FSHIFT)) * HZ);
- } else { /* blink at user specified interval */
- led_blink_timer.expires = jiffies + (timeout * HZ);
- }
- add_timer(&led_blink_timer);
-}
-
-#ifdef CONFIG_PROC_FS
-static int led_proc_show(struct seq_file *m, void *v)
-{
- if (get_auxio() & AUXIO_LED)
- seq_puts(m, "on\n");
- else
- seq_puts(m, "off\n");
- return 0;
-}
-
-static int led_proc_open(struct inode *inode, struct file *file)
-{
- return single_open(file, led_proc_show, NULL);
-}
-
-static ssize_t led_proc_write(struct file *file, const char __user *buffer,
- size_t count, loff_t *ppos)
-{
- char *buf = NULL;
-
- if (count > LED_MAX_LENGTH)
- count = LED_MAX_LENGTH;
-
- buf = memdup_user_nul(buffer, count);
- if (IS_ERR(buf))
- return PTR_ERR(buf);
-
- /* work around \n when echo'ing into proc */
- if (buf[count - 1] == '\n')
- buf[count - 1] = '\0';
-
- /* before we change anything we want to stop any running timers,
- * otherwise calls such as on will have no persistent effect
- */
- del_timer_sync(&led_blink_timer);
-
- if (!strcmp(buf, "on")) {
- auxio_set_led(AUXIO_LED_ON);
- } else if (!strcmp(buf, "toggle")) {
- led_toggle();
- } else if ((*buf > '0') && (*buf <= '9')) {
- led_blink_timer_timeout = simple_strtoul(buf, NULL, 10);
- led_blink(&led_blink_timer);
- } else if (!strcmp(buf, "load")) {
- led_blink_timer_timeout = 0;
- led_blink(&led_blink_timer);
- } else {
- auxio_set_led(AUXIO_LED_OFF);
- }
-
- kfree(buf);
-
- return count;
-}
-
-static const struct proc_ops led_proc_ops = {
- .proc_open = led_proc_open,
- .proc_read = seq_read,
- .proc_lseek = seq_lseek,
- .proc_release = single_release,
- .proc_write = led_proc_write,
-};
-#endif
-
-#define LED_VERSION "0.1"
-
-static int __init led_init(void)
-{
- timer_setup(&led_blink_timer, led_blink, 0);
-
-#ifdef CONFIG_PROC_FS
- if (!proc_create("led", 0, NULL, &led_proc_ops))
- return -ENOMEM;
-#endif
- printk(KERN_INFO
- "led: version %s, Lars Kotthoff <metalhead@...alhead.ws>\n",
- LED_VERSION);
-
- return 0;
-}
-
-static void __exit led_exit(void)
-{
- remove_proc_entry("led", NULL);
- del_timer_sync(&led_blink_timer);
-}
-
-module_init(led_init);
-module_exit(led_exit);
-
-MODULE_AUTHOR("Lars Kotthoff <metalhead@...alhead.ws>");
-MODULE_DESCRIPTION("Provides control of the front LED on SPARC systems.");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(LED_VERSION);
--
2.34.1
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