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From fc22d87d11df9053f1a1b41b7b450c3af07b5059 Mon Sep 17 00:00:00 2001
From: mokopatches <mokopatches@openmoko.org>
Date: Wed, 16 Jul 2008 14:46:56 +0100
Subject: [PATCH] gta02-leds.patch
---
drivers/leds/Kconfig | 6 +
drivers/leds/Makefile | 1 +
drivers/leds/leds-neo1973-gta02.c | 226 +++++++++++++++++++++++++++++++++++++
3 files changed, 233 insertions(+), 0 deletions(-)
create mode 100644 drivers/leds/leds-neo1973-gta02.c
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 8c7d949..b6b1211 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -153,6 +153,12 @@ config LEDS_NEO1973_VIBRATOR
help
This option enables support for the vibrator on the FIC Neo1973.
+config LEDS_NEO1973_GTA02
+ tristate "LED Support for the FIC Neo1973 (GTA02)"
+ depends on LEDS_CLASS && MACH_NEO1973_GTA02
+ help
+ This option enables support for the LEDs on the FIC Neo1973.
+
comment "LED Triggers"
config LEDS_TRIGGERS
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index 148fe51..3a9df6a 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -22,6 +22,7 @@ obj-$(CONFIG_LEDS_CLEVO_MAIL) += leds-clevo-mail.o
obj-$(CONFIG_LEDS_HP6XX) += leds-hp6xx.o
obj-$(CONFIG_LEDS_FSG) += leds-fsg.o
obj-$(CONFIG_LEDS_NEO1973_VIBRATOR) += leds-neo1973-vibrator.o
+obj-$(CONFIG_LEDS_NEO1973_GTA02) += leds-neo1973-gta02.o
# LED Triggers
obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o
diff --git a/drivers/leds/leds-neo1973-gta02.c b/drivers/leds/leds-neo1973-gta02.c
new file mode 100644
index 0000000..bf1d540
--- /dev/null
+++ b/drivers/leds/leds-neo1973-gta02.c
@@ -0,0 +1,226 @@
+/*
+ * LED driver for the FIC Neo1973 GTA02 GSM phone
+ *
+ * (C) 2006-2007 by OpenMoko, Inc.
+ * Author: Harald Welte <laforge@openmoko.org>
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+#include <asm/hardware.h>
+#include <asm/mach-types.h>
+#include <asm/arch/pwm.h>
+#include <asm/arch/gta02.h>
+#include <asm/plat-s3c/regs-timer.h>
+
+#define MAX_LEDS 3
+#define COUNTER 256
+
+struct gta02_led_priv
+{
+ struct mutex mutex;
+ struct led_classdev cdev;
+ struct s3c2410_pwm pwm;
+ unsigned int gpio;
+ unsigned int has_pwm;
+};
+
+struct gta02_led_bundle
+{
+ int num_leds;
+ struct gta02_led_priv led[MAX_LEDS];
+};
+
+static inline struct gta02_led_priv *to_priv(struct led_classdev *led_cdev)
+{
+ return container_of(led_cdev, struct gta02_led_priv, cdev);
+}
+
+static inline struct gta02_led_bundle *to_bundle(struct led_classdev *led_cdev)
+{
+ return dev_get_drvdata(led_cdev->dev);
+}
+
+static void gta02led_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ struct gta02_led_priv *lp = to_priv(led_cdev);
+
+ /*
+ * value == 255 -> 99% duty cycle (full power)
+ * value == 128 -> 50% duty cycle (medium power)
+ * value == 0 -> 0% duty cycle (zero power)
+ */
+ mutex_lock(&lp->mutex);
+ if (lp->has_pwm) {
+ s3c2410_pwm_duty_cycle(value, &lp->pwm);
+ } else {
+ if (value)
+ s3c2410_gpio_setpin(lp->gpio, 1);
+ else
+ s3c2410_gpio_setpin(lp->gpio, 0);
+ }
+ mutex_unlock(&lp->mutex);
+}
+
+#ifdef CONFIG_PM
+static int gta02led_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ struct gta02_led_bundle *bundle = platform_get_drvdata(pdev);
+ int i;
+
+ for (i = 0; i < bundle->num_leds; i++)
+ led_classdev_suspend(&bundle->led[i].cdev);
+
+ return 0;
+}
+
+static int gta02led_resume(struct platform_device *pdev)
+{
+ struct gta02_led_bundle *bundle = platform_get_drvdata(pdev);
+ int i;
+
+ for (i = 0; i < bundle->num_leds; i++)
+ led_classdev_resume(&bundle->led[i].cdev);
+
+ return 0;
+}
+#endif
+
+static int __init gta02led_probe(struct platform_device *pdev)
+{
+ int i, rc;
+ struct gta02_led_bundle *bundle;
+
+ if (!machine_is_neo1973_gta02())
+ return -EIO;
+
+ bundle = kzalloc(sizeof(struct gta02_led_bundle), GFP_KERNEL);
+ if (!bundle)
+ return -ENOMEM;
+ platform_set_drvdata(pdev, bundle);
+
+ for (i = 0; i < pdev->num_resources; i++) {
+ struct gta02_led_priv *lp;
+ struct resource *r;
+
+ if (i >= MAX_LEDS)
+ break;
+
+ r = platform_get_resource(pdev, 0, i);
+ if (!r || !r->start || !r->name)
+ continue;
+
+ lp = &bundle->led[i];
+
+ lp->gpio = r->start;
+ lp->cdev.name = r->name;
+ lp->cdev.brightness_set = gta02led_set;
+
+ switch (lp->gpio) {
+ case S3C2410_GPB0:
+ lp->has_pwm = 1;
+ lp->pwm.timerid = PWM0;
+ s3c2410_gpio_cfgpin(lp->gpio, S3C2410_GPB0_TOUT0);
+ break;
+ case S3C2410_GPB1:
+ lp->has_pwm = 1;
+ lp->pwm.timerid = PWM1;
+ s3c2410_gpio_cfgpin(lp->gpio, S3C2410_GPB1_TOUT1);
+ break;
+ case S3C2410_GPB2:
+ lp->has_pwm = 1;
+ lp->pwm.timerid = PWM2;
+ s3c2410_gpio_cfgpin(lp->gpio, S3C2410_GPB2_TOUT2);
+ break;
+ case S3C2410_GPB3:
+ lp->has_pwm = 1;
+ lp->pwm.timerid = PWM3;
+ s3c2410_gpio_cfgpin(lp->gpio, S3C2410_GPB3_TOUT3);
+ break;
+ default:
+ break;
+ }
+
+ lp->pwm.prescaler = 0;
+ lp->pwm.divider = S3C2410_TCFG1_MUX3_DIV8;
+ lp->pwm.counter = COUNTER;
+ lp->pwm.comparer = COUNTER;
+ s3c2410_pwm_enable(&lp->pwm);
+ s3c2410_pwm_start(&lp->pwm);
+
+ switch (lp->gpio) {
+ case S3C2410_GPB0:
+ case S3C2410_GPB1:
+ case S3C2410_GPB2:
+ lp->has_pwm = 0;
+ s3c2410_gpio_cfgpin(lp->gpio, S3C2410_GPIO_OUTPUT);
+ s3c2410_gpio_setpin(lp->gpio, 0);
+ break;
+ default:
+ break;
+ }
+
+ mutex_init(&lp->mutex);
+ rc = led_classdev_register(&pdev->dev, &lp->cdev);
+ }
+
+ return 0;
+}
+
+static int gta02led_remove(struct platform_device *pdev)
+{
+ struct gta02_led_bundle *bundle = platform_get_drvdata(pdev);
+ int i;
+
+ for (i = 0; i < bundle->num_leds; i++) {
+ struct gta02_led_priv *lp = &bundle->led[i];
+ if (lp->has_pwm)
+ s3c2410_pwm_disable(&lp->pwm);
+
+ led_classdev_unregister(&lp->cdev);
+ mutex_destroy(&lp->mutex);
+ }
+
+ platform_set_drvdata(pdev, NULL);
+ kfree(bundle);
+
+ return 0;
+}
+
+static struct platform_driver gta02led_driver = {
+ .probe = gta02led_probe,
+ .remove = gta02led_remove,
+#ifdef CONFIG_PM
+ .suspend = gta02led_suspend,
+ .resume = gta02led_resume,
+#endif
+ .driver = {
+ .name = "gta02-led",
+ },
+};
+
+static int __init gta02led_init(void)
+{
+ return platform_driver_register(>a02led_driver);
+}
+
+static void __exit gta02led_exit(void)
+{
+ platform_driver_unregister(>a02led_driver);
+}
+
+module_init(gta02led_init);
+module_exit(gta02led_exit);
+
+MODULE_AUTHOR("Harald Welte <laforge@openmoko.org>");
+MODULE_DESCRIPTION("FIC Neo1973 GTA02 LED driver");
+MODULE_LICENSE("GPL");
--
1.5.6.3
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