mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-26 05:43:20 +02:00
fc54b9bf15
(stable-branch of Openmoko) git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13613 3c298f89-4303-0410-b956-a3cf2f4a3e73
244 lines
8.1 KiB
Diff
Executable File
244 lines
8.1 KiB
Diff
Executable File
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
|
|
|