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authorOyvind Repvik <nail@nslu2-linux.org>2005-08-12 06:03:19 +0000
committerOpenEmbedded Project <openembedded-devel@lists.openembedded.org>2005-08-12 06:03:19 +0000
commit3ccfdcb8a1275e4caaef969a4eae013db08a690d (patch)
tree2fe56e583dff7532d3854e8f34a14323cb42a243 /packages/linux/nslu2-kernel
parent3767d608789428e0ab547f813116f1c7e10e55b9 (diff)
Fix pbutton to signal init, so it shuts down safely (Requires upgraded sysvinit)
Fix rbutton to do machine_power_off(), since reset if unreliable.
Diffstat (limited to 'packages/linux/nslu2-kernel')
-rw-r--r--packages/linux/nslu2-kernel/2.6/nslu2-io_rpbutton.patch139
1 files changed, 139 insertions, 0 deletions
diff --git a/packages/linux/nslu2-kernel/2.6/nslu2-io_rpbutton.patch b/packages/linux/nslu2-kernel/2.6/nslu2-io_rpbutton.patch
new file mode 100644
index 0000000000..b5ce101d68
--- /dev/null
+++ b/packages/linux/nslu2-kernel/2.6/nslu2-io_rpbutton.patch
@@ -0,0 +1,139 @@
+--- nslu2-io.c.old 2da1d3f5c0aa0804c5769588337077ddcb35c5e9
++++ linux-2.6.12.2/arch/arm/mach-ixp4xx/nslu2-io.c e895da638b4aae16a11fafe52ae0b063645a9a12
+@@ -158,6 +158,8 @@
+ #define LED_DISK2 3
+ #define LED_ALL 4
+
++static int nslu2_shutdown_in_progress = 0;
++
+ static unsigned long init_jiffy = 0; //jiffies at init time
+ static unsigned long rb_presses = 0; //number of reset button presses
+ static unsigned long ontime = 50;
+@@ -503,40 +505,20 @@
+ static irqreturn_t n2pb_handler (int irq, void *dev_id, struct pt_regs *regs)
+ {
+ void *ret;
+-
+- wake_up(&n2pb_waitq);
+- remove_proc_entry(PWR_OFF_STR, NULL); //no parent
+- n2_buzz(N2_BEEP_PITCH_MED, N2_BEEP_DUR_MED);
+- ret = create_proc_entry(PWR_OFF_STR, 0, NULL);
+- nslu2_io_debug((KERN_DEBUG "cpe ret = %p\n", ret));
+-
+-// WARNING: This is RUDE...it unconditionally pulls the power plug.
+-// Your data will be at risk...since this is just a test system
+-// I am leaving it enabled...eventually userland needs to get the
+-// message, do an orderly shutdown and use an ioctl or something in
+-// /proc/powerdowm to actually have us pull the plug.
+-
+- machine_power_off();
+-
++ if (!nslu2_shutdown_in_progress++) {
++ wake_up(&n2pb_waitq);
++ remove_proc_entry(PWR_OFF_STR, NULL); //no parent
++ n2_buzz(N2_BEEP_PITCH_HIGH, N2_BEEP_DUR_SHORT); // Short, high-pitched "OK"
++ ret = create_proc_entry(PWR_OFF_STR, 0, NULL);
++ nslu2_io_debug((KERN_DEBUG "Powerbutton pressed. Shutting down. cpe ret = %p\n", ret));
++ kill_proc(1,SIGINT,1); // Signal init to shut down
++ } else {
++ n2_buzz(N2_BEEP_PITCH_LOW, N2_BEEP_DUR_MED); // Make a scary noise!
++ nslu2_io_debug((KERN_DEBUG "Powerbutton pressed while already in shutdown")); // Whine!
++ }
+ return IRQ_HANDLED;
+ }
+
+-//==================================================================================================
+-//
+-//static void do_rb_timeout(unsigned long data)
+-//{
+-// int i;
+-//
+-// for (i = 0; i < rb_presses; i++)
+-// n2_buzz(N2_BEEP_PITCH_MED,N2_BEEP_DUR_SHORT);
+-// return;
+-//}
+-//
+-//==================================================================================================
+-// does nothing -- waiting for userland to define
+-// This thing is sorta braindead...edge triggered IRQs aren't available in the drivers yet...so
+-// we hang in a loop until the button is no longer pressed
+-
+ struct testr {
+ int ctl;
+ long param;
+@@ -544,72 +526,11 @@
+
+ static irqreturn_t n2rb_handler (int irq, void *dev_id, struct pt_regs *regs)
+ {
++// This doesn't reset the NSLU2. It powers it off. Close enough, since reset is unreliable
+
+- static struct testr test[] = {
+- { N2LM_ALL_OFF,0 },
+- { N2LM_ON,0 },
+- { N2LM_OFF,0 },
+- { N2LM_ON,1 },
+- { N2LM_ALL_OFF,1 },
+- { N2LM_ON,2 },
+- { N2LM_OFF,2 },
+- { N2LM_ON,3 },
+- { N2LM_OFF,3 },
+- { N2LM_BLINK,0 },
+- { N2LM_OFF,0 },
+- { N2LM_BLINK,1 },
+- { N2LM_OFF,1 },
+- { N2LM_BLINK,2 },
+- { N2LM_OFF,2 },
+- { N2LM_BLINK,3 },
+- { N2LM_OFF,3 },
+- { N2LM_ALL_OFF,0 },
+- { N2LM_ALT,1 },
+- { N2LM_OFF,1 },
+- { N2LM_ALL_ON,0 }
+- };
+-
+- nslu2_io_debug(("Reset Entry IRQ =%d Presses = %d Jiffies = %08lx\tIO = %x\tIOW = %x\n", irq, rb_presses, jiffies, (int)_IO('M',rb_presses), (int)_IOW('M',rb_presses,long)));
+-
+ wake_up(&n2rb_waitq);
+- while ((*IXP4XX_GPIO_GPINR & GPIO_RB_BM) == 0)
+- ; //wait for button release
+-
+- if (rb_presses > 20)
+- rb_presses = 0;
+- tone = (rb_presses * 50) + 200;
+- ontime = (rb_presses*10) + 100;
+- offtime = 500 - (rb_presses*20);
+- nslu2_io_debug(("Ontime = %d\tOfftime = %d\tTone = %d\n",ontime,offtime,tone));
+- rb_presses++;
+-
+- n2bz_ioctl(NULL,NULL, N2BZ_BEEPS, rb_presses);
+- n2lm_ioctl(NULL,NULL, test[rb_presses].ctl, test[rb_presses].param);
+-// if (rb_presses == 0) {
+-// init_jiffy = jiffies;
+-// init_timer (&n2rb_timer);
+-// n2rb_timer.function = do_rb_timeout;
+-// };
+-//
+-// if (rb_presses == 8)
+-// rb_presses = 0;
+-// if (rb_presses & 1)
+-// n2lm_ledon(test[rb_presses]);
+-// else
+-// n2lm_ledoff(test[rb_presses]);
+-//
+-// n2rb_timer.expires = (jiffies + RB_DELAY);
+-// add_timer (&n2rb_timer);
+-// if (rb_presses < 5) {
+-// if (rb_presses > 0)
+-// n2lm_ledoff(rb_presses);
+-// n2lm_ledon(++rb_presses);
+-// n2lm_timer_start(rb_presses);
+-// };
+-
+- nslu2_io_debug((KERN_DEBUG "Reset Exit IRQ=%d Presses= %d Jiffies= %08lx\n", irq, rb_presses, jiffies));
+- return IRQ_HANDLED;
+-
++ machine_power_off();
++ return IRQ_HANDLED; // So we don't get a nobody cared error :-P
+ }
+
+ //==================================================================================================