+++ /dev/null
-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
-
projects / openwrt / staging / florian.git / blobdiff