--- /dev/null
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright (C) 2006 infineon
+ * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
+ *
+ */
+
+#include <linux/slab.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/version.h>
+#include <linux/types.h>
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/uaccess.h>
+#include <linux/unistd.h>
+#include <linux/errno.h>
+#include <linux/leds.h>
+#include <linux/delay.h>
+
+#include <ifxmips.h>
+#include <ifxmips_gpio.h>
+#include <ifxmips_pmu.h>
+
+#define DRVNAME "ifxmips_led"
+
+/* might need to be changed depending on shift register used on the pcb */
+#if 1
+#define IFXMIPS_LED_CLK_EDGE IFXMIPS_LED_FALLING
+#else
+#define IFXMIPS_LED_CLK_EDGE IFXMIPS_LED_RISING
+#endif
+
+#define IFXMIPS_LED_SPEED IFXMIPS_LED_8HZ
+
+#define IFXMIPS_LED_GPIO_PORT 0
+
+#define IFXMIPS_MAX_LED 24
+
+struct ifxmips_led {
+ struct led_classdev cdev;
+ u8 bit;
+};
+
+void ifxmips_led_set(unsigned int led)
+{
+ led &= 0xffffff;
+ ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CPU0) | led, IFXMIPS_LED_CPU0);
+}
+EXPORT_SYMBOL(ifxmips_led_set);
+
+void ifxmips_led_clear(unsigned int led)
+{
+ led = ~(led & 0xffffff);
+ ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CPU0) & led, IFXMIPS_LED_CPU0);
+}
+EXPORT_SYMBOL(ifxmips_led_clear);
+
+void ifxmips_led_blink_set(unsigned int led)
+{
+ led &= 0xffffff;
+ ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON0) | led, IFXMIPS_LED_CON0);
+}
+EXPORT_SYMBOL(ifxmips_led_blink_set);
+
+void ifxmips_led_blink_clear(unsigned int led)
+{
+ led = ~(led & 0xffffff);
+ ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON0) & led, IFXMIPS_LED_CON0);
+}
+EXPORT_SYMBOL(ifxmips_led_blink_clear);
+
+static void ifxmips_ledapi_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ struct ifxmips_led *led_dev =
+ container_of(led_cdev, struct ifxmips_led, cdev);
+
+ if (value)
+ ifxmips_led_set(1 << led_dev->bit);
+ else
+ ifxmips_led_clear(1 << led_dev->bit);
+}
+
+void ifxmips_led_setup_gpio(void)
+{
+ int i = 0;
+
+ /* leds are controlled via a shift register
+ we need to setup pins SH,D,ST (4,5,6) to make it work */
+ for (i = 4; i < 7; i++) {
+ ifxmips_port_set_altsel0(IFXMIPS_LED_GPIO_PORT, i);
+ ifxmips_port_clear_altsel1(IFXMIPS_LED_GPIO_PORT, i);
+ ifxmips_port_set_dir_out(IFXMIPS_LED_GPIO_PORT, i);
+ ifxmips_port_set_open_drain(IFXMIPS_LED_GPIO_PORT, i);
+ }
+}
+
+static int ifxmips_led_probe(struct platform_device *dev)
+{
+ int i = 0;
+
+ ifxmips_led_setup_gpio();
+
+ ifxmips_w32(0, IFXMIPS_LED_AR);
+ ifxmips_w32(0, IFXMIPS_LED_CPU0);
+ ifxmips_w32(0, IFXMIPS_LED_CPU1);
+ ifxmips_w32(LED_CON0_SWU, IFXMIPS_LED_CON0);
+ ifxmips_w32(0, IFXMIPS_LED_CON1);
+
+ /* setup the clock edge that the shift register is triggered on */
+ ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON0) & ~IFXMIPS_LED_EDGE_MASK,
+ IFXMIPS_LED_CON0);
+ ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON0) | IFXMIPS_LED_CLK_EDGE,
+ IFXMIPS_LED_CON0);
+
+ /* per default leds 15-0 are set */
+ ifxmips_w32(IFXMIPS_LED_GROUP1 | IFXMIPS_LED_GROUP0, IFXMIPS_LED_CON1);
+
+ /* leds are update periodically by the FPID */
+ ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON1) & ~IFXMIPS_LED_UPD_MASK,
+ IFXMIPS_LED_CON1);
+ ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON1) | IFXMIPS_LED_UPD_SRC_FPI,
+ IFXMIPS_LED_CON1);
+
+ /* set led update speed */
+ ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON1) & ~IFXMIPS_LED_MASK,
+ IFXMIPS_LED_CON1);
+ ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON1) | IFXMIPS_LED_SPEED,
+ IFXMIPS_LED_CON1);
+
+ /* adsl 0 and 1 leds are updated by the arc */
+ ifxmips_w32(ifxmips_r32(IFXMIPS_LED_CON0) | IFXMIPS_LED_ADSL_SRC,
+ IFXMIPS_LED_CON0);
+
+ /* per default, the leds are turned on */
+ ifxmips_pmu_enable(IFXMIPS_PMU_PWDCR_LED);
+
+ for (i = 0; i < IFXMIPS_MAX_LED; i++) {
+ struct ifxmips_led *tmp =
+ kzalloc(sizeof(struct ifxmips_led), GFP_KERNEL);
+ tmp->cdev.brightness_set = ifxmips_ledapi_set;
+ tmp->cdev.name = kmalloc(sizeof("ifxmips:led:00"), GFP_KERNEL);
+ sprintf((char *)tmp->cdev.name, "ifxmips:led:%02d", i);
+ tmp->cdev.default_trigger = NULL;
+ tmp->bit = i;
+ led_classdev_register(&dev->dev, &tmp->cdev);
+ }
+
+ return 0;
+}
+
+static int ifxmips_led_remove(struct platform_device *pdev)
+{
+ return 0;
+}
+
+static struct platform_driver ifxmips_led_driver = {
+ .probe = ifxmips_led_probe,
+ .remove = ifxmips_led_remove,
+ .driver = {
+ .name = DRVNAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+int __init ifxmips_led_init(void)
+{
+ int ret = platform_driver_register(&ifxmips_led_driver);
+ if (ret)
+ printk(KERN_INFO
+ "ifxmips_led: Error registering platfom driver!");
+
+ return ret;
+}
+
+void __exit ifxmips_led_exit(void)
+{
+ platform_driver_unregister(&ifxmips_led_driver);
+}
+
+module_init(ifxmips_led_init);
+module_exit(ifxmips_led_exit);
projects / openwrt / openwrt.git / blobdiff