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Diffstat (limited to 'target/linux/omap24xx/patches-2.6.36/900-n810-battery-management.patch')
-rw-r--r--target/linux/omap24xx/patches-2.6.36/900-n810-battery-management.patch639
1 files changed, 0 insertions, 639 deletions
diff --git a/target/linux/omap24xx/patches-2.6.36/900-n810-battery-management.patch b/target/linux/omap24xx/patches-2.6.36/900-n810-battery-management.patch
deleted file mode 100644
index 6dd3682..0000000
--- a/target/linux/omap24xx/patches-2.6.36/900-n810-battery-management.patch
+++ /dev/null
@@ -1,639 +0,0 @@
----
- arch/arm/mach-omap2/board-n8x0.c | 13 +
- drivers/cbus/Kconfig | 12 +
- drivers/cbus/Makefile | 3
- drivers/cbus/lipocharge.c | 63 ++++++
- drivers/cbus/lipocharge.h | 50 ++++
- drivers/cbus/n810bm_main.c | 397 +++++++++++++++++++++++++++++++++++++++
- drivers/cbus/retu.c | 4
- drivers/cbus/retu.h | 3
- drivers/cbus/tahvo.h | 6
- 9 files changed, 548 insertions(+), 3 deletions(-)
-
---- linux-2.6.36-rc7.orig/drivers/cbus/Kconfig
-+++ linux-2.6.36-rc7/drivers/cbus/Kconfig
-@@ -94,4 +94,16 @@ config CBUS_RETU_HEADSET
- to Retu/Vilma. Detection state and events are exposed through
- sysfs.
-
-+config N810BM
-+ depends on CBUS_RETU && CBUS_TAHVO
-+ tristate "Nokia n810 battery management"
-+ ---help---
-+ Nokia n810 device battery management.
-+
-+ WARNING: This driver is based on reverse engineered information.
-+ It is possibly dangerous to use this software.
-+ Use this software at your own risk!
-+
-+ If unsure, say N.
-+
- endmenu
---- linux-2.6.36-rc7.orig/drivers/cbus/Makefile
-+++ linux-2.6.36-rc7/drivers/cbus/Makefile
-@@ -12,3 +12,6 @@ obj-$(CONFIG_CBUS_RETU_WDT) += retu-wdt.
- obj-$(CONFIG_CBUS_TAHVO_USER) += tahvo-user.o
- obj-$(CONFIG_CBUS_RETU_USER) += retu-user.o
- obj-$(CONFIG_CBUS_RETU_HEADSET) += retu-headset.o
-+n810bm-y += n810bm_main.o
-+n810bm-y += lipocharge.o
-+obj-$(CONFIG_N810BM) += n810bm.o
---- /dev/null
-+++ linux-2.6.36-rc7/drivers/cbus/n810bm_main.c
-@@ -0,0 +1,397 @@
-+/*
-+ * Nokia n810 battery management
-+ *
-+ * WARNING: This driver is based on reverse engineered information.
-+ * It is possibly dangerous to use this software.
-+ * Use this software at your own risk!
-+ *
-+ * Copyright (c) 2010 Michael Buesch <mb@bu3sch.de>
-+ *
-+ * 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.
-+ */
-+
-+#include <linux/module.h>
-+#include <linux/device.h>
-+#include <linux/platform_device.h>
-+#include <linux/slab.h>
-+#include <linux/spinlock.h>
-+#include <linux/timer.h>
-+#include <linux/reboot.h>
-+
-+#include "retu.h"
-+#include "tahvo.h"
-+#include "lipocharge.h"
-+
-+
-+#define N810BM_CHECK_INTERVAL (HZ * 5)
-+#define N810BM_MIN_VOLTAGE_THRES 3300 /* Absolute minimum voltage threshold */
-+
-+
-+/* Battery related retu ADC channels */
-+#define RETU_ADC_BSI 0x01 /* Battery Size Indicator */
-+#define RETU_ADC_BATTVOLT 0x08 /* Battery voltage measurement */
-+
-+/* RETU_ADC_BSI
-+ * The battery size indicator ADC measures the resistance between
-+ * the battery BSI pin and ground. This is used to detect the battery
-+ * capacity, as the BSI resistor is related to capacity.
-+ *
-+ * Manually measured lookup table.
-+ * Hard to measure, thus not very accurate.
-+ *
-+ * Resistance | ADC value
-+ * ========================
-+ * 120k | 0x3AC
-+ * 110k | 0x37C
-+ * 100k | 0x351
-+ * 90k | 0x329
-+ */
-+
-+/* RETU_ADC_BATTVOLT
-+ * Manually measured lookup table.
-+ * Hard to measure, thus not very accurate.
-+ *
-+ * Voltage | ADC value
-+ * =====================
-+ * 2.80V | 0x037
-+ * 2.90V | 0x05E
-+ * 3.00V | 0x090
-+ * 3.10V | 0x0A4
-+ * 3.20V | 0x0CC
-+ * 3.30V | 0x0EF
-+ * 3.40V | 0x115
-+ * 3.50V | 0x136
-+ * 3.60V | 0x15C
-+ * 3.70V | 0x187
-+ * 3.80V | 0x1A5
-+ * 3.90V | 0x1C9
-+ * 4.00V | 0x1ED
-+ * 4.10V | 0x212
-+ * 4.20V | 0x236
-+ */
-+
-+
-+enum n810bm_capacity {
-+ N810BM_CAP_UNKNOWN = 0,
-+ N810BM_CAP_1500MAH = 1500, /* 1500 mAh battery */
-+};
-+
-+struct n810bm {
-+ struct platform_device *pdev;
-+
-+ enum n810bm_capacity capacity;
-+ struct timer_list check_timer;
-+
-+ struct lipocharge *charger;
-+
-+ spinlock_t lock;
-+};
-+
-+
-+static NORET_TYPE void n810bm_emergency(struct n810bm *bm, const char *message) ATTRIB_NORET;
-+static void n810bm_emergency(struct n810bm *bm, const char *message)
-+{
-+ printk(KERN_EMERG "n810 battery management fatal fault: %s\n", message);
-+ /* Force a hard shutdown. */
-+ machine_power_off();
-+ panic("n810bm: Failed to halt machine in emergency state\n");
-+}
-+
-+#if 0
-+static u16 retu_read(struct n810bm *bm, unsigned int reg)
-+{
-+ int ret;
-+ unsigned long flags;
-+
-+ spin_lock_irqsave(&retu_lock, flags);
-+ ret = retu_read_reg(reg);
-+ spin_unlock_irqrestore(&retu_lock, flags);
-+ if (ret < 0 || ret > 0xFFFF)
-+ n810bm_emergency(bm, "retu_read");
-+
-+ return ret;
-+}
-+#endif
-+
-+static void retu_maskset(struct n810bm *bm, unsigned int reg, u16 mask, u16 set)
-+{
-+ int ret;
-+ unsigned long flags;
-+ u16 value;
-+
-+ spin_lock_irqsave(&retu_lock, flags);
-+ if (~mask) {
-+ ret = retu_read_reg(reg);
-+ if (ret < 0 || ret > 0xFFFF)
-+ goto fatal_unlock;
-+ value = ret;
-+ } else
-+ value = 0;
-+ value &= ~mask;
-+ value |= set;
-+ ret = retu_write_reg(reg, value);
-+ if (ret)
-+ goto fatal_unlock;
-+ spin_unlock_irqrestore(&retu_lock, flags);
-+
-+ return;
-+
-+fatal_unlock:
-+ spin_unlock_irqrestore(&retu_lock, flags);
-+ n810bm_emergency(bm, "retu_maskset");
-+}
-+
-+static inline void retu_write(struct n810bm *bm, unsigned int reg, u16 value)
-+{
-+ return retu_maskset(bm, reg, 0xFFFF, value);
-+}
-+
-+static int retu_adc_average(struct n810bm *bm, unsigned int chan,
-+ unsigned int nr_passes)
-+{
-+ unsigned int i, value = 0;
-+ int ret;
-+
-+ if (WARN_ON(!nr_passes))
-+ return 0;
-+ for (i = 0; i < nr_passes; i++) {
-+ ret = retu_read_adc(chan);
-+ if (ret < 0)
-+ return ret;
-+ value += ret;
-+ }
-+ value /= nr_passes;
-+
-+ return value;
-+}
-+
-+/* Measure the battery voltage. Returns the value in mV (or negative value on error). */
-+static int n810bm_measure_batt_voltage(struct n810bm *bm)
-+{
-+ int adc;
-+ unsigned int mv;
-+ const unsigned int scale = 1000;
-+
-+ adc = retu_adc_average(bm, RETU_ADC_BATTVOLT, 5);
-+ if (adc < 0)
-+ return adc;
-+ if (adc <= 0x37)
-+ return 2800;
-+ mv = 2800 + ((adc - 0x37) * (((4200 - 2800) * scale) / (0x236 - 0x37))) / scale;
-+
-+ return mv;
-+}
-+
-+/* Read the battery capacity via BSI pin. */
-+static enum n810bm_capacity n810bm_read_batt_capacity(struct n810bm *bm)
-+{
-+ int adc;
-+ const unsigned int hyst = 20;
-+
-+ adc = retu_adc_average(bm, RETU_ADC_BSI, 5);
-+ if (adc < 0) {
-+ dev_err(&bm->pdev->dev, "Failed to read BSI ADC");
-+ return N810BM_CAP_UNKNOWN;
-+ }
-+
-+ if (adc >= 0x3B5 - hyst && adc <= 0x3B5 + hyst)
-+ return N810BM_CAP_1500MAH;
-+
-+ dev_err(&bm->pdev->dev, "Capacity indicator 0x%X unknown", adc);
-+
-+ return N810BM_CAP_UNKNOWN;
-+}
-+
-+/* Convert a battery voltage (in mV) to percentage. */
-+static unsigned int n810bm_mvolt2percent(unsigned int mv)
-+{
-+ const unsigned int minv = 3700;
-+ const unsigned int maxv = 4150;
-+ unsigned int percent;
-+
-+ mv = clamp(mv, minv, maxv);
-+ percent = (mv - minv) * 100 / (maxv - minv);
-+
-+ return percent;
-+}
-+
-+static void n810bm_check_timer(unsigned long data)
-+{
-+ struct n810bm *bm = (struct n810bm *)data;
-+ unsigned long flags;
-+ int mv;
-+
-+ spin_lock_irqsave(&bm->lock, flags);
-+
-+ mv = n810bm_measure_batt_voltage(bm);
-+ if (mv < 0)
-+ n810bm_emergency(bm, "check timer: Failed to measure");
-+ if (mv < N810BM_MIN_VOLTAGE_THRES)
-+ n810bm_emergency(bm, "check timer: Minimum voltage threshold reached");
-+
-+ mod_timer(&bm->check_timer, round_jiffies(jiffies + N810BM_CHECK_INTERVAL));
-+ spin_unlock_irqrestore(&bm->lock, flags);
-+
-+ return;
-+}
-+
-+static void n810bm_adc_irq_handler(unsigned long data)
-+{
-+ struct n810bm *bm = (struct n810bm *)data;
-+
-+ retu_ack_irq(RETU_INT_ADCS);
-+ //TODO
-+printk("n810bm: ADC timer triggered\n");
-+}
-+
-+static ssize_t n810bm_attr_charge_show(struct device *dev,
-+ struct device_attribute *attr,
-+ char *buf)
-+{
-+ struct platform_device *pdev = to_platform_device(dev);
-+ struct n810bm *bm = platform_get_drvdata(pdev);
-+ int err = -ENODEV;
-+ ssize_t count = 0;
-+ int millivolt;
-+
-+ spin_lock_irq(&bm->lock);
-+ millivolt = n810bm_measure_batt_voltage(bm);
-+ if (millivolt >= 0) {
-+ count = snprintf(buf, PAGE_SIZE, "%u\n",
-+ n810bm_mvolt2percent(millivolt));
-+ err = 0;
-+ }
-+ spin_unlock_irq(&bm->lock);
-+
-+ return err ? err : count;
-+}
-+static DEVICE_ATTR(batt_charge, 0444, n810bm_attr_charge_show, NULL);
-+
-+static ssize_t n810bm_attr_capacity_show(struct device *dev,
-+ struct device_attribute *attr,
-+ char *buf)
-+{
-+ struct platform_device *pdev = to_platform_device(dev);
-+ struct n810bm *bm = platform_get_drvdata(pdev);
-+ ssize_t count;
-+
-+ spin_lock_irq(&bm->lock);
-+ count = snprintf(buf, PAGE_SIZE, "%u\n",
-+ (unsigned int)bm->capacity);
-+ spin_unlock_irq(&bm->lock);
-+
-+ return count;
-+}
-+static DEVICE_ATTR(batt_capacity, 0444, n810bm_attr_capacity_show, NULL);
-+
-+static void n810bm_hw_exit(struct n810bm *bm)
-+{
-+ retu_write(bm, RETU_REG_ADCSCR, 0);
-+}
-+
-+static int n810bm_hw_init(struct n810bm *bm)
-+{
-+ retu_write(bm, RETU_REG_ADCSCR, 0);
-+
-+ bm->capacity = n810bm_read_batt_capacity(bm);
-+ if (bm->capacity == N810BM_CAP_UNKNOWN) {
-+ dev_err(&bm->pdev->dev, "Unknown battery detected");
-+ return -ENODEV;
-+ }
-+ dev_info(&bm->pdev->dev, "Detected %u mAh battery\n",
-+ (unsigned int)bm->capacity);
-+
-+ return 0;
-+}
-+
-+static int __devinit n810bm_probe(struct platform_device *pdev)
-+{
-+ struct n810bm *bm;
-+ int err;
-+
-+ bm = kzalloc(sizeof(*bm), GFP_KERNEL);
-+ if (!bm)
-+ return -ENOMEM;
-+ bm->pdev = pdev;
-+ platform_set_drvdata(pdev, bm);
-+ spin_lock_init(&bm->lock);
-+ setup_timer(&bm->check_timer, n810bm_check_timer, (unsigned long)bm);
-+
-+ err = n810bm_hw_init(bm);
-+ if (err)
-+ goto err_free;
-+ err = device_create_file(&pdev->dev, &dev_attr_batt_charge);
-+ if (err)
-+ goto err_exit;
-+ err = device_create_file(&pdev->dev, &dev_attr_batt_capacity);
-+ if (err)
-+ goto err_rem_charge;
-+ err = retu_request_irq(RETU_INT_ADCS, n810bm_adc_irq_handler,
-+ (unsigned long)bm, "n810bm");
-+ if (err)
-+ goto err_rem_capa;
-+
-+ mod_timer(&bm->check_timer, round_jiffies(jiffies + N810BM_CHECK_INTERVAL));
-+
-+ dev_info(&pdev->dev, "Battery management initialized");
-+
-+ return 0;
-+
-+err_rem_capa:
-+ device_remove_file(&pdev->dev, &dev_attr_batt_capacity);
-+err_rem_charge:
-+ device_remove_file(&pdev->dev, &dev_attr_batt_charge);
-+err_exit:
-+ n810bm_hw_exit(bm);
-+err_free:
-+ kfree(bm);
-+ platform_set_drvdata(pdev, NULL);
-+ return err;
-+}
-+
-+static int __devexit n810bm_remove(struct platform_device *pdev)
-+{
-+ struct n810bm *bm = platform_get_drvdata(pdev);
-+
-+ retu_free_irq(RETU_INT_ADCS);
-+ del_timer_sync(&bm->check_timer);
-+ device_remove_file(&pdev->dev, &dev_attr_batt_capacity);
-+ device_remove_file(&pdev->dev, &dev_attr_batt_charge);
-+ n810bm_hw_exit(bm);
-+
-+ kfree(bm);
-+ platform_set_drvdata(pdev, NULL);
-+
-+ return 0;
-+}
-+
-+static struct platform_driver n810bm_driver = {
-+ .remove = __devexit_p(n810bm_remove),
-+ .driver = {
-+ .name = "n810bm",
-+ }
-+};
-+
-+static int __init n810bm_modinit(void)
-+{
-+ return platform_driver_probe(&n810bm_driver, n810bm_probe);
-+}
-+module_init(n810bm_modinit);
-+
-+static void __exit n810bm_modexit(void)
-+{
-+ platform_driver_unregister(&n810bm_driver);
-+}
-+module_exit(n810bm_modexit);
-+
-+MODULE_DESCRIPTION("Nokia n810 battery management");
-+MODULE_LICENSE("GPL");
-+MODULE_AUTHOR("Michael Buesch");
---- linux-2.6.36-rc7.orig/drivers/cbus/retu.c
-+++ linux-2.6.36-rc7/drivers/cbus/retu.c
-@@ -85,10 +85,10 @@ int retu_read_reg(int reg)
- *
- * This function writes a value to the specified register
- */
--void retu_write_reg(int reg, u16 val)
-+int retu_write_reg(int reg, u16 val)
- {
- BUG_ON(!retu_initialized);
-- cbus_write_reg(cbus_host, RETU_ID, reg, val);
-+ return cbus_write_reg(cbus_host, RETU_ID, reg, val);
- }
-
- void retu_set_clear_reg_bits(int reg, u16 set, u16 clear)
---- linux-2.6.36-rc7.orig/drivers/cbus/retu.h
-+++ linux-2.6.36-rc7/drivers/cbus/retu.h
-@@ -39,6 +39,7 @@
- #define RETU_REG_CC2 0x0e /* Common control register 2 */
- #define RETU_REG_CTRL_CLR 0x0f /* Regulator clear register */
- #define RETU_REG_CTRL_SET 0x10 /* Regulator set register */
-+#define RETU_REG_UNK1 0x14 /* 0x1000 is set when charger is plugged in */
- #define RETU_REG_STATUS 0x16 /* Status register */
- #define RETU_REG_WATCHDOG 0x17 /* Watchdog register */
- #define RETU_REG_AUDTXR 0x18 /* Audio Codec Tx register */
-@@ -58,7 +59,7 @@
- #define MAX_RETU_IRQ_HANDLERS 16
-
- int retu_read_reg(int reg);
--void retu_write_reg(int reg, u16 val);
-+int retu_write_reg(int reg, u16 val);
- void retu_set_clear_reg_bits(int reg, u16 set, u16 clear);
- int retu_read_adc(int channel);
- int retu_request_irq(int id, void *irq_handler, unsigned long arg, char *name);
---- linux-2.6.36-rc7.orig/arch/arm/mach-omap2/board-n8x0.c
-+++ linux-2.6.36-rc7/arch/arm/mach-omap2/board-n8x0.c
-@@ -920,6 +920,17 @@ static int __init n810_tlv320aic3x_regis
- }
- arch_initcall(n810_tlv320aic3x_register);
-
-+static struct platform_device n810_bm_device = {
-+ .name = "n810bm",
-+ .id = -1,
-+};
-+
-+static void __init n810_bm_init(void)
-+{
-+ if (platform_device_register(&n810_bm_device))
-+ BUG();
-+}
-+
- static void __init n8x0_init_machine(void)
- {
- omap2420_mux_init(board_mux, OMAP_PACKAGE_ZAC);
-@@ -947,6 +958,8 @@ static void __init n8x0_init_machine(voi
- n8x0_onenand_init();
- n8x0_mmc_init();
- n8x0_usb_init();
-+
-+ n810_bm_init();
- }
-
- MACHINE_START(NOKIA_N800, "Nokia N800")
---- /dev/null
-+++ linux-2.6.36-rc7/drivers/cbus/lipocharge.c
-@@ -0,0 +1,63 @@
-+/*
-+ * Generic LIPO battery charger
-+ *
-+ * Copyright (c) 2010 Michael Buesch <mb@bu3sch.de>
-+ *
-+ * 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.
-+ */
-+
-+#include "lipocharge.h"
-+
-+#include <linux/slab.h>
-+
-+
-+static void lipocharge_timer(unsigned long data)
-+{
-+ struct lipocharge *c = (struct lipocharge *)data;
-+
-+ spin_lock(&c->lock);
-+ //TODO
-+ spin_unlock(&c->lock);
-+}
-+
-+struct lipocharge * lipocharge_alloc(gfp_t gfp)
-+{
-+ struct lipocharge *c;
-+
-+ c = kzalloc(sizeof(*c), gfp);
-+ if (!c)
-+ return NULL;
-+ spin_lock_init(&c->lock);
-+ setup_timer(&c->timer, lipocharge_timer, (unsigned long)c);
-+
-+ return c;
-+}
-+
-+void lipocharge_free(struct lipocharge *c)
-+{
-+ kfree(c);
-+}
-+
-+int lipocharge_start(struct lipocharge *c)
-+{
-+ if (!c->set_current || !c->get_voltage ||
-+ !c->finished || !c->emergency)
-+ return -EINVAL;
-+ if (!c->top_voltage || c->top_voltage > 4200)
-+ return -EINVAL;
-+ //TODO
-+}
-+
-+void lipocharge_stop(struct lipocharge *c)
-+{
-+ del_timer_sync(&c->timer);
-+ //TODO
-+}
---- /dev/null
-+++ linux-2.6.36-rc7/drivers/cbus/lipocharge.h
-@@ -0,0 +1,50 @@
-+#ifndef LIPOCHARGE_H_
-+#define LIPOCHARGE_H_
-+
-+#include <linux/timer.h>
-+#include <linux/spinlock.h>
-+
-+
-+#define LIPORATE(a,b) (((a) * 1000) + (b))
-+#define LIPORATE_1C LIPORATE(1,0) /* 1C */
-+#define LIPORATE_p8C LIPORATE(0,8) /* 0.8C */
-+
-+/** struct lipocharge - A generic LIPO charger
-+ *
-+ * @capacity: Battery capacity in mAh.
-+ * @rate: Charge rate.
-+ * @top_voltage: Fully charged voltage, in mV.
-+ *
-+ * @set_current: Set the charge current, in mA.
-+ * @get_voltage: Get the battery voltage, in mV.
-+ *
-+ * @emergency: Something went wrong. Force shutdown.
-+ *
-+ * @priv: opaque pointer.
-+ */
-+struct lipocharge
-+{
-+ unsigned int capacity;
-+ unsigned int rate;
-+ unsigned int top_voltage;
-+
-+ int (*set_current)(struct lipocharge *c, unsigned int ma);
-+ int (*get_voltage)(struct lipocharge *c, unsigned int *mv);
-+
-+ void (*finished)(struct lipocharge *c);
-+ void (*emergency)(struct lipocharge *c);
-+
-+ void *priv;
-+
-+ /* internal */
-+ spinlock_t lock;
-+ struct timer_list timer;
-+};
-+
-+struct lipocharge * lipocharge_alloc(gfp_t gfp);
-+void lipocharge_free(struct lipocharge *c);
-+
-+int lipocharge_start(struct lipocharge *c);
-+void lipocharge_stop(struct lipocharge *c);
-+
-+#endif /* LIPOCHARGE_H_ */
---- linux-2.6.36-rc7.orig/drivers/cbus/tahvo.h
-+++ linux-2.6.36-rc7/drivers/cbus/tahvo.h
-@@ -30,8 +30,14 @@
- #define TAHVO_REG_IDR 0x01 /* Interrupt ID */
- #define TAHVO_REG_IDSR 0x02 /* Interrupt status */
- #define TAHVO_REG_IMR 0x03 /* Interrupt mask */
-+#define TAHVO_REG_CHGCURR 0x04 /* Charge current control (8-bit) */
- #define TAHVO_REG_LEDPWMR 0x05 /* LED PWM */
- #define TAHVO_REG_USBR 0x06 /* USB control */
-+#define TAHVO_REG_CHGCTL 0x08 /* Charge control register */
-+#define TAHVO_REG_CHGCTL_EN 0x0001 /* Global charge enable */
-+#define TAHVO_REG_CHGCTL2 0x0c /* Charge control register 2 */
-+#define TAHVO_REG_BATCURR 0x0d /* Battery (dis)charge current (signed 16-bit) */
-+
- #define TAHVO_REG_MAX 0x0d
-
- /* Interrupt sources */
generated by cgit v1.1 at 2024-12-24 23:57:25 +0000