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277 lines
6.7 KiB
Diff
Executable File
277 lines
6.7 KiB
Diff
Executable File
From fc22d87d11df9053f1a1b41b7b450c3af07b5059 Mon Sep 17 00:00:00 2001
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From: mokopatches <mokopatches@openmoko.org>
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Date: Wed, 16 Jul 2008 14:46:56 +0100
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Subject: [PATCH] gta02-leds.patch
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---
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drivers/leds/Kconfig | 6 +
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drivers/leds/Makefile | 1 +
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drivers/leds/leds-neo1973-gta02.c | 226 +++++++++++++++++++++++++++++++++++++
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3 files changed, 233 insertions(+), 0 deletions(-)
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create mode 100644 drivers/leds/leds-neo1973-gta02.c
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diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
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index 8c7d949..b6b1211 100644
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--- a/drivers/leds/Kconfig
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+++ b/drivers/leds/Kconfig
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@@ -153,6 +153,12 @@ config LEDS_NEO1973_VIBRATOR
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help
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This option enables support for the vibrator on the FIC Neo1973.
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+config LEDS_NEO1973_GTA02
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+ tristate "LED Support for the FIC Neo1973 (GTA02)"
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+ depends on LEDS_CLASS && MACH_NEO1973_GTA02
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+ help
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+ This option enables support for the LEDs 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 148fe51..3a9df6a 100644
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--- a/drivers/leds/Makefile
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+++ b/drivers/leds/Makefile
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@@ -22,6 +22,7 @@ obj-$(CONFIG_LEDS_CLEVO_MAIL) += leds-clevo-mail.o
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obj-$(CONFIG_LEDS_HP6XX) += leds-hp6xx.o
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obj-$(CONFIG_LEDS_FSG) += leds-fsg.o
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obj-$(CONFIG_LEDS_NEO1973_VIBRATOR) += leds-neo1973-vibrator.o
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+obj-$(CONFIG_LEDS_NEO1973_GTA02) += leds-neo1973-gta02.o
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# LED Triggers
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obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o
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diff --git a/drivers/leds/leds-neo1973-gta02.c b/drivers/leds/leds-neo1973-gta02.c
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new file mode 100644
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index 0000000..bf1d540
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--- /dev/null
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+++ b/drivers/leds/leds-neo1973-gta02.c
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@@ -0,0 +1,226 @@
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+/*
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+ * LED driver for the FIC Neo1973 GTA02 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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+ */
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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/gta02.h>
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+#include <asm/plat-s3c/regs-timer.h>
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+
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+#define MAX_LEDS 3
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+#define COUNTER 256
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+
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+struct gta02_led_priv
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+{
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+ struct mutex mutex;
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+ struct led_classdev cdev;
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+ struct s3c2410_pwm pwm;
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+ unsigned int gpio;
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+ unsigned int has_pwm;
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+};
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+
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+struct gta02_led_bundle
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+{
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+ int num_leds;
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+ struct gta02_led_priv led[MAX_LEDS];
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+};
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+
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+static inline struct gta02_led_priv *to_priv(struct led_classdev *led_cdev)
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+{
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+ return container_of(led_cdev, struct gta02_led_priv, cdev);
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+}
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+
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+static inline struct gta02_led_bundle *to_bundle(struct led_classdev *led_cdev)
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+{
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+ return dev_get_drvdata(led_cdev->dev);
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+}
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+
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+static void gta02led_set(struct led_classdev *led_cdev,
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+ enum led_brightness value)
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+{
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+ struct gta02_led_priv *lp = to_priv(led_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(&lp->mutex);
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+ if (lp->has_pwm) {
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+ s3c2410_pwm_duty_cycle(value, &lp->pwm);
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+ } else {
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+ if (value)
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+ s3c2410_gpio_setpin(lp->gpio, 1);
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+ else
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+ s3c2410_gpio_setpin(lp->gpio, 0);
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+ }
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+ mutex_unlock(&lp->mutex);
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+}
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+
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+#ifdef CONFIG_PM
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+static int gta02led_suspend(struct platform_device *pdev, pm_message_t state)
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+{
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+ struct gta02_led_bundle *bundle = platform_get_drvdata(pdev);
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+ int i;
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+
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+ for (i = 0; i < bundle->num_leds; i++)
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+ led_classdev_suspend(&bundle->led[i].cdev);
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+
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+ return 0;
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+}
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+
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+static int gta02led_resume(struct platform_device *pdev)
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+{
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+ struct gta02_led_bundle *bundle = platform_get_drvdata(pdev);
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+ int i;
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+
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+ for (i = 0; i < bundle->num_leds; i++)
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+ led_classdev_resume(&bundle->led[i].cdev);
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+
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+ return 0;
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+}
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+#endif
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+
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+static int __init gta02led_probe(struct platform_device *pdev)
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+{
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+ int i, rc;
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+ struct gta02_led_bundle *bundle;
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+
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+ if (!machine_is_neo1973_gta02())
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+ return -EIO;
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+
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+ bundle = kzalloc(sizeof(struct gta02_led_bundle), GFP_KERNEL);
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+ if (!bundle)
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+ return -ENOMEM;
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+ platform_set_drvdata(pdev, bundle);
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+
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+ for (i = 0; i < pdev->num_resources; i++) {
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+ struct gta02_led_priv *lp;
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+ struct resource *r;
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+
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+ if (i >= MAX_LEDS)
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+ break;
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+
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+ r = platform_get_resource(pdev, 0, i);
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+ if (!r || !r->start || !r->name)
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+ continue;
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+
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+ lp = &bundle->led[i];
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+
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+ lp->gpio = r->start;
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+ lp->cdev.name = r->name;
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+ lp->cdev.brightness_set = gta02led_set;
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+
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+ switch (lp->gpio) {
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+ case S3C2410_GPB0:
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+ lp->has_pwm = 1;
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+ lp->pwm.timerid = PWM0;
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+ s3c2410_gpio_cfgpin(lp->gpio, S3C2410_GPB0_TOUT0);
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+ break;
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+ case S3C2410_GPB1:
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+ lp->has_pwm = 1;
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+ lp->pwm.timerid = PWM1;
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+ s3c2410_gpio_cfgpin(lp->gpio, S3C2410_GPB1_TOUT1);
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+ break;
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+ case S3C2410_GPB2:
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+ lp->has_pwm = 1;
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+ lp->pwm.timerid = PWM2;
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+ s3c2410_gpio_cfgpin(lp->gpio, S3C2410_GPB2_TOUT2);
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+ break;
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+ case S3C2410_GPB3:
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+ lp->has_pwm = 1;
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+ lp->pwm.timerid = PWM3;
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+ s3c2410_gpio_cfgpin(lp->gpio, S3C2410_GPB3_TOUT3);
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+ break;
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+ default:
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+ break;
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+ }
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+
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+ lp->pwm.prescaler = 0;
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+ lp->pwm.divider = S3C2410_TCFG1_MUX3_DIV8;
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+ lp->pwm.counter = COUNTER;
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+ lp->pwm.comparer = COUNTER;
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+ s3c2410_pwm_enable(&lp->pwm);
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+ s3c2410_pwm_start(&lp->pwm);
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+
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+ switch (lp->gpio) {
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+ case S3C2410_GPB0:
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+ case S3C2410_GPB1:
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+ case S3C2410_GPB2:
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+ lp->has_pwm = 0;
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+ s3c2410_gpio_cfgpin(lp->gpio, S3C2410_GPIO_OUTPUT);
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+ s3c2410_gpio_setpin(lp->gpio, 0);
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+ break;
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+ default:
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+ break;
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+ }
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+
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+ mutex_init(&lp->mutex);
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+ rc = led_classdev_register(&pdev->dev, &lp->cdev);
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+ }
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+
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+ return 0;
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+}
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+
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+static int gta02led_remove(struct platform_device *pdev)
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+{
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+ struct gta02_led_bundle *bundle = platform_get_drvdata(pdev);
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+ int i;
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+
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+ for (i = 0; i < bundle->num_leds; i++) {
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+ struct gta02_led_priv *lp = &bundle->led[i];
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+ if (lp->has_pwm)
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+ s3c2410_pwm_disable(&lp->pwm);
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+
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+ led_classdev_unregister(&lp->cdev);
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+ mutex_destroy(&lp->mutex);
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+ }
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+
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+ platform_set_drvdata(pdev, NULL);
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+ kfree(bundle);
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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 gta02led_driver = {
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+ .probe = gta02led_probe,
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+ .remove = gta02led_remove,
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+#ifdef CONFIG_PM
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+ .suspend = gta02led_suspend,
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+ .resume = gta02led_resume,
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+#endif
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+ .driver = {
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+ .name = "gta02-led",
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+ },
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+};
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+
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+static int __init gta02led_init(void)
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+{
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+ return platform_driver_register(>a02led_driver);
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+}
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+
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+static void __exit gta02led_exit(void)
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+{
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+ platform_driver_unregister(>a02led_driver);
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+}
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+
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+module_init(gta02led_init);
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+module_exit(gta02led_exit);
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+
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+MODULE_AUTHOR("Harald Welte <laforge@openmoko.org>");
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+MODULE_DESCRIPTION("FIC Neo1973 GTA02 LED driver");
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+MODULE_LICENSE("GPL");
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--
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1.5.6.3
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