From 817390fd03087710107ca9fb3bce6d96ab0006d5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michael=20B=C3=BCsch?= Date: Sun, 6 Feb 2011 21:06:43 +0000 Subject: omap24xx: Remove 2.6.36 SVN-Revision: 25395 --- .../900-n810-battery-management.patch | 639 --------------------- 1 file changed, 639 deletions(-) delete mode 100644 target/linux/omap24xx/patches-2.6.36/900-n810-battery-management.patch (limited to 'target/linux/omap24xx/patches-2.6.36/900-n810-battery-management.patch') 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 -+ * -+ * 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 -+#include -+#include -+#include -+#include -+#include -+#include -+ -+#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 -+ * -+ * 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 -+ -+ -+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 -+#include -+ -+ -+#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 */ -- cgit v1.1