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fc54b9bf15
(stable-branch of Openmoko) git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13613 3c298f89-4303-0410-b956-a3cf2f4a3e73
245 lines
6.4 KiB
Diff
245 lines
6.4 KiB
Diff
From f7ad7d5e90a4ab68e7e25df3bd4a56b6c23f5e45 Mon Sep 17 00:00:00 2001
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From: mokopatches <mokopatches@openmoko.org>
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Date: Fri, 4 Apr 2008 11:31:55 +0100
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Subject: [PATCH] gta01-vibrator.patch
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This patch adds driver support for the vibator device of the FIC/OpenMoko
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Neo1973 GSM phone. The driver uses the existing LED class driver framework,
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since there's a lot of similarity between the LED and the vibrator function.
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Signed-off-by: Harald Welte <laforge@openmoko.org>
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---
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drivers/leds/Kconfig | 8 ++-
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drivers/leds/Makefile | 1 +
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drivers/leds/leds-neo1973-vibrator.c | 181 ++++++++++++++++++++++++++++++++++
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3 files changed, 189 insertions(+), 1 deletions(-)
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create mode 100644 drivers/leds/leds-neo1973-vibrator.c
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diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
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index ec568fa..4579a88 100644
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--- a/drivers/leds/Kconfig
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+++ b/drivers/leds/Kconfig
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@@ -57,7 +57,7 @@ config LEDS_TOSA
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config LEDS_S3C24XX
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tristate "LED Support for Samsung S3C24XX GPIO LEDs"
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- depends on LEDS_CLASS && ARCH_S3C2410
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+ depends on LEDS_CLASS && ARCH_S3C2410 && S3C2410_PWM
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help
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This option enables support for LEDs connected to GPIO lines
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on Samsung S3C24XX series CPUs, such as the S3C2410 and S3C2440.
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@@ -114,6 +114,12 @@ config LEDS_CM_X270
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help
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This option enables support for the CM-X270 LEDs.
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+config LEDS_NEO1973_VIBRATOR
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+ tristate "Vibrator Support for the FIC Neo1973 GSM phone"
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+ depends on LEDS_CLASS && MACH_NEO1973
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+ help
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+ This option enables support for the vibrator on the FIC Neo1973.
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+
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comment "LED Triggers"
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config LEDS_TRIGGERS
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diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
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index a60de1b..f64332d 100644
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--- a/drivers/leds/Makefile
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+++ b/drivers/leds/Makefile
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@@ -19,6 +19,7 @@ obj-$(CONFIG_LEDS_COBALT_QUBE) += leds-cobalt-qube.o
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obj-$(CONFIG_LEDS_COBALT_RAQ) += leds-cobalt-raq.o
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obj-$(CONFIG_LEDS_GPIO) += leds-gpio.o
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obj-$(CONFIG_LEDS_CM_X270) += leds-cm-x270.o
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+obj-$(CONFIG_LEDS_NEO1973_VIBRATOR) += leds-neo1973-vibrator.o
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# LED Triggers
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obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o
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diff --git a/drivers/leds/leds-neo1973-vibrator.c b/drivers/leds/leds-neo1973-vibrator.c
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new file mode 100644
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index 0000000..0336e36
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--- /dev/null
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+++ b/drivers/leds/leds-neo1973-vibrator.c
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@@ -0,0 +1,181 @@
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+/*
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+ * LED driver for the vibrator of the FIC Neo1973 GSM Phone
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+ *
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+ * (C) 2006-2007 by OpenMoko, Inc.
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+ * Author: Harald Welte <laforge@openmoko.org>
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+ * All rights reserved.
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License version 2 as
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+ * published by the Free Software Foundation.
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+ *
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+ * Javi Roman <javiroman@kernel-labs.org>:
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+ * Implement PWM support for GTA01Bv4 and later
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+ */
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+
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+#include <linux/kernel.h>
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+#include <linux/init.h>
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+#include <linux/platform_device.h>
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+#include <linux/leds.h>
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+#include <asm/hardware.h>
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+#include <asm/mach-types.h>
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+#include <asm/arch/pwm.h>
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+#include <asm/arch/gta01.h>
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+#include <asm/plat-s3c/regs-timer.h>
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+
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+#define COUNTER 64
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+
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+struct neo1973_vib_priv {
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+ struct led_classdev cdev;
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+ unsigned int gpio;
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+ struct mutex mutex;
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+ unsigned int has_pwm;
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+ struct s3c2410_pwm pwm;
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+};
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+
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+static void neo1973_vib_vib_set(struct led_classdev *led_cdev,
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+ enum led_brightness value)
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+{
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+ struct neo1973_vib_priv *vp =
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+ container_of(led_cdev, struct neo1973_vib_priv, cdev);
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+
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+ /*
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+ * value == 255 -> 99% duty cycle (full power)
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+ * value == 128 -> 50% duty cycle (medium power)
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+ * value == 0 -> 0% duty cycle (zero power)
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+ */
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+ mutex_lock(&vp->mutex);
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+ if (vp->has_pwm)
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+ s3c2410_pwm_duty_cycle(value/4, &vp->pwm);
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+ else {
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+ if (value)
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+ s3c2410_gpio_setpin(vp->gpio, 1);
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+ else
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+ s3c2410_gpio_setpin(vp->gpio, 0);
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+ }
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+
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+ mutex_unlock(&vp->mutex);
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+}
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+
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+static struct neo1973_vib_priv neo1973_vib_led = {
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+ .cdev = {
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+ .name = "neo1973:vibrator",
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+ .brightness_set = neo1973_vib_vib_set,
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+ },
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+};
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+
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+static int neo1973_vib_init_hw(struct neo1973_vib_priv *vp)
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+{
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+ int rc;
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+
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+ rc = s3c2410_pwm_init(&vp->pwm);
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+ if (rc)
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+ return rc;
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+
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+ vp->pwm.timerid = PWM3;
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+ /* use same prescaler as arch/arm/plat-s3c24xx/time.c */
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+ vp->pwm.prescaler = (6 - 1) / 2;
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+ vp->pwm.divider = S3C2410_TCFG1_MUX3_DIV2;
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+ vp->pwm.counter = COUNTER;
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+ vp->pwm.comparer = COUNTER;
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+
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+ rc = s3c2410_pwm_enable(&vp->pwm);
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+ if (rc)
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+ return rc;
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+
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+ s3c2410_pwm_start(&vp->pwm);
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+
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+ return 0;
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+}
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+
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+#ifdef CONFIG_PM
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+static int neo1973_vib_suspend(struct platform_device *dev, pm_message_t state)
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+{
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+ led_classdev_suspend(&neo1973_vib_led.cdev);
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+ return 0;
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+}
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+
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+static int neo1973_vib_resume(struct platform_device *dev)
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+{
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+ struct neo1973_vib_priv *vp = platform_get_drvdata(dev);
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+
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+ if (vp->has_pwm)
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+ neo1973_vib_init_hw(vp);
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+
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+ led_classdev_resume(&neo1973_vib_led.cdev);
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+
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+ return 0;
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+}
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+#endif /* CONFIG_PM */
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+
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+static int __init neo1973_vib_probe(struct platform_device *pdev)
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+{
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+ struct resource *r;
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+ int rc;
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+
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+ if (!machine_is_neo1973_gta01())
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+ return -EIO;
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+
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+ r = platform_get_resource(pdev, 0, 0);
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+ if (!r || !r->start)
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+ return -EIO;
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+
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+ neo1973_vib_led.gpio = r->start;
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+ platform_set_drvdata(pdev, &neo1973_vib_led);
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+
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+ /* TOUT3 */
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+ if (neo1973_vib_led.gpio == S3C2410_GPB3) {
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+ rc = neo1973_vib_init_hw(&neo1973_vib_led);
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+ if (rc)
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+ return rc;
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+
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+ s3c2410_pwm_duty_cycle(0, &neo1973_vib_led.pwm);
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+ s3c2410_gpio_cfgpin(neo1973_vib_led.gpio, S3C2410_GPB3_TOUT3);
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+ neo1973_vib_led.has_pwm = 1;
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+ }
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+
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+ mutex_init(&neo1973_vib_led.mutex);
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+
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+ return led_classdev_register(&pdev->dev, &neo1973_vib_led.cdev);
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+}
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+
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+static int neo1973_vib_remove(struct platform_device *pdev)
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+{
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+ if (neo1973_vib_led.has_pwm)
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+ s3c2410_pwm_disable(&neo1973_vib_led.pwm);
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+
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+ led_classdev_unregister(&neo1973_vib_led.cdev);
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+
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+ mutex_destroy(&neo1973_vib_led.mutex);
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+
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+ return 0;
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+}
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+
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+static struct platform_driver neo1973_vib_driver = {
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+ .probe = neo1973_vib_probe,
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+ .remove = neo1973_vib_remove,
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+#ifdef CONFIG_PM
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+ .suspend = neo1973_vib_suspend,
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+ .resume = neo1973_vib_resume,
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+#endif
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+ .driver = {
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+ .name = "neo1973-vibrator",
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+ },
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+};
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+
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+static int __init neo1973_vib_init(void)
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+{
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+ return platform_driver_register(&neo1973_vib_driver);
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+}
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+
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+static void __exit neo1973_vib_exit(void)
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+{
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+ platform_driver_unregister(&neo1973_vib_driver);
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+}
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+
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+module_init(neo1973_vib_init);
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+module_exit(neo1973_vib_exit);
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+
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+MODULE_AUTHOR("Harald Welte <laforge@openmoko.org>");
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+MODULE_DESCRIPTION("FIC Neo1973 vibrator driver");
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+MODULE_LICENSE("GPL");
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--
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1.5.6.5
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