change prefix for kernelpatchbase 2.6.26

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13619 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 243 insertions, 0 deletions

diff --git a/target/linux/s3c24xx/patches-2.6.26/1047-introduce-fiq-migrate-vibrator-gta02-only.patch.patch b/target/linux/s3c24xx/patches-2.6.26/1047-introduce-fiq-migrate-vibrator-gta02-only.patch.patch
new file mode 100755
index 000000000..f179555d1
--- /dev/null
+++ b/target/linux/s3c24xx/patches-2.6.26/1047-introduce-fiq-migrate-vibrator-gta02-only.patch.patch
@@ -0,0 +1,243 @@
+From b740b1200958baf4b5675017531c773bad5b64d0 Mon Sep 17 00:00:00 2001
+From: mokopatches <mokopatches@openmoko.org>
+Date: Fri, 25 Jul 2008 22:21:23 +0100
+Subject: [PATCH] introduce-fiq-migrate-vibrator-gta02-only.patch
+
+On GTA02 we use FIQ to manage the vibrator IO now.  That
+is necessary because we stole timer3 from doing hw pwm
+for vibrator.  This keeps the same UI in /sys but does
+"bitbang pwm" on the same vibrator GPIO
+
+From: Andy Green <andy@openmoko.com>
+Signed-off-by: Andy Green <andy@openmoko.com>
+---
+ arch/arm/mach-s3c2440/fiq_c_isr.c            |   13 +++++---
+ arch/arm/mach-s3c2440/mach-gta02.c           |   38 ++++++++++++++++++++++++++
+ drivers/leds/Kconfig                         |    1 +
+ drivers/leds/leds-neo1973-vibrator.c         |   24 +++++++++++++++-
+ include/asm-arm/arch-s3c2410/fiq_ipc_gta02.h |    9 +++++-
+ 5 files changed, 77 insertions(+), 8 deletions(-)
+
+diff --git a/arch/arm/mach-s3c2440/fiq_c_isr.c b/arch/arm/mach-s3c2440/fiq_c_isr.c
+index a71a234..38692fc 100644
+--- a/arch/arm/mach-s3c2440/fiq_c_isr.c
++++ b/arch/arm/mach-s3c2440/fiq_c_isr.c
+@@ -79,6 +79,7 @@ u16 _fiq_timer_divisor;
+  */
+ extern void __attribute__ ((naked)) s3c2440_fiq_isr(void);
+ 
++
+ /* this is copied into the hard FIQ vector during init */
+ 
+ static void __attribute__ ((naked)) s3c2440_FIQ_Branch(void)
+@@ -128,7 +129,7 @@ static int fiq_init_irq_source(int irq_index_fiq)
+ 
+ 	_fiq_irq = irq_index_fiq;
+ 	_fiq_ack_mask = 1 << (irq_index_fiq - S3C2410_CPUIRQ_OFFSET);
+-	timer_index = (irq_index_fiq - IRQ_TIMER0);
++	_fiq_timer_index = (irq_index_fiq - IRQ_TIMER0);
+ 
+ 	/* set up the timer to operate as a pwm device */
+ 
+@@ -136,12 +137,11 @@ static int fiq_init_irq_source(int irq_index_fiq)
+ 	if (rc)
+ 		goto bail;
+ 
+-	pwm_timer_fiq.timerid = PWM0 + timer_index;
++	pwm_timer_fiq.timerid = PWM0 + _fiq_timer_index;
+ 	pwm_timer_fiq.prescaler = (6 - 1) / 2;
+ 	pwm_timer_fiq.divider = S3C2410_TCFG1_MUX3_DIV2;
+ 	/* default rate == ~32us */
+-	pwm_timer_fiq.counter = pwm_timer_fiq.comparer =
+-					timer_divisor = 64;
++	pwm_timer_fiq.counter = pwm_timer_fiq.comparer = 3000;
+ 
+ 	rc = s3c2410_pwm_enable(&pwm_timer_fiq);
+ 	if (rc)
+@@ -149,6 +149,8 @@ static int fiq_init_irq_source(int irq_index_fiq)
+ 
+ 	s3c2410_pwm_start(&pwm_timer_fiq);
+ 
++	_fiq_timer_divisor = 0xffff; /* so kick will work initially */
++
+ 	/* let our selected interrupt be a magic FIQ interrupt */
+ 	__raw_writel(_fiq_ack_mask, S3C2410_INTMOD);
+ 
+@@ -189,7 +191,7 @@ void fiq_kick(void)
+ 		     S3C2410_INTMSK);
+ 	tcon = __raw_readl(S3C2410_TCON) & ~S3C2410_TCON_T3START;
+ 	/* fake the timer to a count of 1 */
+-	__raw_writel(1, S3C2410_TCNTB(timer_index));
++	__raw_writel(1, S3C2410_TCNTB(_fiq_timer_index));
+ 	__raw_writel(tcon | S3C2410_TCON_T3MANUALUPD, S3C2410_TCON);
+ 	__raw_writel(tcon | S3C2410_TCON_T3MANUALUPD | S3C2410_TCON_T3START,
+ 		     S3C2410_TCON);
+@@ -207,6 +209,7 @@ static int __init sc32440_fiq_probe(struct platform_device *pdev)
+ 
+ 	if (!r)
+ 		return -EIO;
++
+ 	/* configure for the interrupt we are meant to use */
+ 	printk(KERN_INFO"Enabling FIQ using irq %d\n", r->start);
+ 
+diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c
+index cb839b2..8c7bbe7 100644
+--- a/arch/arm/mach-s3c2440/mach-gta02.c
++++ b/arch/arm/mach-s3c2440/mach-gta02.c
+@@ -95,12 +95,50 @@ static spinlock_t motion_irq_lock;
+ struct fiq_ipc fiq_ipc;
+ EXPORT_SYMBOL(fiq_ipc);
+ 
++#define DIVISOR_FROM_US(x) ((x) << 1)
++
++#define FIQ_DIVISOR_VIBRATOR DIVISOR_FROM_US(100)
++
+ /* define FIQ ISR */
+ 
+ FIQ_HANDLER_START()
+ /* define your locals here -- no initializers though */
++	u16 divisor;
+ FIQ_HANDLER_ENTRY(256, 512)
+ /* Your ISR here :-) */
++	divisor = 0xffff;
++
++	/* Vibrator servicing */
++
++	if (fiq_ipc.vib_pwm_latched || fiq_ipc.vib_pwm) { /* not idle */
++		if (((u8)_fiq_count_fiqs) == fiq_ipc.vib_pwm_latched)
++			s3c2410_gpio_setpin(fiq_ipc.vib_gpio_pin, 0);
++		if (((u8)_fiq_count_fiqs) == 0) {
++			fiq_ipc.vib_pwm_latched = fiq_ipc.vib_pwm;
++			if (fiq_ipc.vib_pwm_latched)
++				s3c2410_gpio_setpin(fiq_ipc.vib_gpio_pin, 1);
++		}
++		divisor = FIQ_DIVISOR_VIBRATOR;
++	}
++
++	/* TODO: HDQ servicing */
++
++
++
++	/* disable further timer interrupts if nobody has any work
++	 * or adjust rate according to who still has work
++	 *
++	 * CAUTION: it means forground code must disable FIQ around
++	 * its own non-atomic S3C2410_INTMSK changes... not common
++	 * thankfully and taken care of by the fiq-basis patch
++	 */
++	if (divisor == 0xffff) /* mask the fiq irq source */
++		__raw_writel(__raw_readl(S3C2410_INTMSK) | _fiq_ack_mask,
++			     S3C2410_INTMSK);
++	else /* still working, maybe at a different rate */
++		__raw_writel(divisor, S3C2410_TCNTB(_fiq_timer_index));
++	_fiq_timer_divisor = divisor;
++
+ FIQ_HANDLER_END()
+ 
+ 
+diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
+index b6b1211..5a0aa9c 100644
+--- a/drivers/leds/Kconfig
++++ b/drivers/leds/Kconfig
+@@ -150,6 +150,7 @@ config LEDS_CLEVO_MAIL
+ config LEDS_NEO1973_VIBRATOR
+ 	tristate "Vibrator Support for the FIC Neo1973 GSM phone"
+ 	depends on LEDS_CLASS && MACH_NEO1973
++	select S3C2440_C_FIQ
+ 	help
+ 	  This option enables support for the vibrator on the FIC Neo1973.
+ 
+diff --git a/drivers/leds/leds-neo1973-vibrator.c b/drivers/leds/leds-neo1973-vibrator.c
+index c943a6a..36ed216 100644
+--- a/drivers/leds/leds-neo1973-vibrator.c
++++ b/drivers/leds/leds-neo1973-vibrator.c
+@@ -23,6 +23,8 @@
+ #include <asm/arch/gta01.h>
+ #include <asm/plat-s3c/regs-timer.h>
+ 
++#include <asm/arch-s3c2410/fiq_ipc_gta02.h>
++
+ #define COUNTER 64
+ 
+ struct neo1973_vib_priv {
+@@ -39,6 +41,11 @@ static void neo1973_vib_vib_set(struct led_classdev *led_cdev,
+ 	struct neo1973_vib_priv *vp =
+ 		container_of(led_cdev, struct neo1973_vib_priv, cdev);
+ 
++	if (machine_is_neo1973_gta02()) { /* use FIQ to control GPIO */
++		fiq_ipc.vib_pwm = value; /* set it for FIQ */
++		fiq_kick(); /* start up FIQs if not already going */
++		return;
++	}
+ 	/*
+ 	 * value == 255 -> 99% duty cycle (full power)
+ 	 * value == 128 -> 50% duty cycle (medium power)
+@@ -46,7 +53,7 @@ static void neo1973_vib_vib_set(struct led_classdev *led_cdev,
+ 	 */
+ 	mutex_lock(&vp->mutex);
+ 	if (vp->has_pwm)
+-		s3c2410_pwm_duty_cycle(value/4, &vp->pwm);
++		s3c2410_pwm_duty_cycle(value / 4, &vp->pwm);
+ 	else {
+ 		if (value)
+ 			s3c2410_gpio_setpin(vp->gpio, 1);
+@@ -123,6 +130,15 @@ static int __init neo1973_vib_probe(struct platform_device *pdev)
+ 	neo1973_vib_led.gpio = r->start;
+ 	platform_set_drvdata(pdev, &neo1973_vib_led);
+ 
++	if (machine_is_neo1973_gta02()) { /* use FIQ to control GPIO */
++		s3c2410_gpio_setpin(neo1973_vib_led.gpio, 0); /* off */
++		s3c2410_gpio_cfgpin(neo1973_vib_led.gpio, S3C2410_GPIO_OUTPUT);
++		/* safe, kmalloc'd copy needed for FIQ ISR */
++		fiq_ipc.vib_gpio_pin = neo1973_vib_led.gpio;
++		fiq_ipc.vib_pwm = 0; /* off */
++		goto configured;
++	}
++
+ 	/* TOUT3 */
+ 	if (neo1973_vib_led.gpio == S3C2410_GPB3) {
+ 		rc = neo1973_vib_init_hw(&neo1973_vib_led);
+@@ -133,7 +149,7 @@ static int __init neo1973_vib_probe(struct platform_device *pdev)
+ 		s3c2410_gpio_cfgpin(neo1973_vib_led.gpio, S3C2410_GPB3_TOUT3);
+ 		neo1973_vib_led.has_pwm = 1;
+ 	}
+-
++configured:
+ 	mutex_init(&neo1973_vib_led.mutex);
+ 
+ 	return led_classdev_register(&pdev->dev, &neo1973_vib_led.cdev);
+@@ -141,6 +157,10 @@ static int __init neo1973_vib_probe(struct platform_device *pdev)
+ 
+ static int neo1973_vib_remove(struct platform_device *pdev)
+ {
++	if (machine_is_neo1973_gta02()) /* use FIQ to control GPIO */
++		fiq_ipc.vib_pwm = 0; /* off */
++	/* would only need kick if already off so no kick needed */
++
+ 	if (neo1973_vib_led.has_pwm)
+ 		s3c2410_pwm_disable(&neo1973_vib_led.pwm);
+ 
+diff --git a/include/asm-arm/arch-s3c2410/fiq_ipc_gta02.h b/include/asm-arm/arch-s3c2410/fiq_ipc_gta02.h
+index 6cbd8e4..507d235 100644
+--- a/include/asm-arm/arch-s3c2410/fiq_ipc_gta02.h
++++ b/include/asm-arm/arch-s3c2410/fiq_ipc_gta02.h
+@@ -16,8 +16,15 @@
+  * for testing
+  */
+ 
++#include <asm/arch/pwm.h>
++#include <asm/plat-s3c/regs-timer.h>
++
++
+ struct fiq_ipc {
+-	u8 u8a[0]; /* placeholder */
++	/* vibrator */
++	unsigned long vib_gpio_pin; /* which pin to meddle with */
++	u8 vib_pwm; /* 0 = OFF -- will ensure GPIO deasserted and stop FIQ */
++	u8 vib_pwm_latched;
+ };
+ 
+ /* actual definition lives in arch/arm/mach-s3c2440/fiq_c_isr.c */
+-- 
+1.5.6.3
+