From 7178dc62a49aa0c89eb7b352736b3ba29a0024d8 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michael=20B=C3=BCsch?= Date: Thu, 7 Oct 2010 09:58:37 +0000 Subject: [PATCH] omap24xx: Improve n810 battery management SVN-Revision: 23282 --- target/linux/omap24xx/Makefile | 2 +- .../omap24xx/patches-2.6.36/500-cbus.patch | 42 +-- .../900-n810-battery-management.patch | 258 ++++++++++++++---- 3 files changed, 226 insertions(+), 76 deletions(-) diff --git a/target/linux/omap24xx/Makefile b/target/linux/omap24xx/Makefile index cc9169bbf1..b2fb5b6560 100644 --- a/target/linux/omap24xx/Makefile +++ b/target/linux/omap24xx/Makefile @@ -12,7 +12,7 @@ BOARDNAME:=TI OMAP-24xx MAINTAINER:=Michael Buesch FEATURES:=targz squashfs jffs2 usb usbgadget display gpio audio -LINUX_VERSION:=2.6.36-rc6 +LINUX_VERSION:=2.6.36-rc7 define Target/Description TI OMAP-24xx diff --git a/target/linux/omap24xx/patches-2.6.36/500-cbus.patch b/target/linux/omap24xx/patches-2.6.36/500-cbus.patch index 91c8ac076b..aba59bc146 100644 --- a/target/linux/omap24xx/patches-2.6.36/500-cbus.patch +++ b/target/linux/omap24xx/patches-2.6.36/500-cbus.patch @@ -20,7 +20,7 @@ 18 files changed, 4533 insertions(+), 1 deletion(-) --- /dev/null -+++ linux-2.6.36-rc4/drivers/cbus/cbus.c ++++ linux-2.6.36-rc7/drivers/cbus/cbus.c @@ -0,0 +1,309 @@ +/* + * drivers/cbus/cbus.c @@ -332,7 +332,7 @@ +MODULE_AUTHOR("Mikko Ylinen"); + --- /dev/null -+++ linux-2.6.36-rc4/drivers/cbus/cbus.h ++++ linux-2.6.36-rc7/drivers/cbus/cbus.h @@ -0,0 +1,36 @@ +/* + * drivers/cbus/cbus.h @@ -371,7 +371,7 @@ + +#endif /* __DRIVERS_CBUS_CBUS_H */ --- /dev/null -+++ linux-2.6.36-rc4/drivers/cbus/Kconfig ++++ linux-2.6.36-rc7/drivers/cbus/Kconfig @@ -0,0 +1,89 @@ +# +# CBUS device configuration @@ -463,7 +463,7 @@ + +endmenu --- /dev/null -+++ linux-2.6.36-rc4/drivers/cbus/Makefile ++++ linux-2.6.36-rc7/drivers/cbus/Makefile @@ -0,0 +1,14 @@ +# +# Makefile for CBUS. @@ -480,7 +480,7 @@ +obj-$(CONFIG_CBUS_RETU_USER) += retu-user.o +obj-$(CONFIG_CBUS_RETU_HEADSET) += retu-headset.o --- /dev/null -+++ linux-2.6.36-rc4/drivers/cbus/retu.c ++++ linux-2.6.36-rc7/drivers/cbus/retu.c @@ -0,0 +1,468 @@ +/** + * drivers/cbus/retu.c @@ -951,7 +951,7 @@ +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Juha Yrjölä, David Weinehall, and Mikko Ylinen"); --- /dev/null -+++ linux-2.6.36-rc4/drivers/cbus/retu.h ++++ linux-2.6.36-rc7/drivers/cbus/retu.h @@ -0,0 +1,77 @@ +/** + * drivers/cbus/retu.h @@ -1031,7 +1031,7 @@ + +#endif /* __DRIVERS_CBUS_RETU_H */ --- /dev/null -+++ linux-2.6.36-rc4/drivers/cbus/retu-headset.c ++++ linux-2.6.36-rc7/drivers/cbus/retu-headset.c @@ -0,0 +1,356 @@ +/** + * Retu/Vilma headset detection @@ -1390,7 +1390,7 @@ +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Juha Yrjölä"); --- /dev/null -+++ linux-2.6.36-rc4/drivers/cbus/retu-pwrbutton.c ++++ linux-2.6.36-rc7/drivers/cbus/retu-pwrbutton.c @@ -0,0 +1,118 @@ +/** + * drivers/cbus/retu-pwrbutton.c @@ -1511,7 +1511,7 @@ +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Ari Saastamoinen"); --- /dev/null -+++ linux-2.6.36-rc4/drivers/cbus/retu-rtc.c ++++ linux-2.6.36-rc7/drivers/cbus/retu-rtc.c @@ -0,0 +1,477 @@ +/** + * drivers/cbus/retu-rtc.c @@ -1991,7 +1991,7 @@ +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Paul Mundt and Igor Stoppa"); --- /dev/null -+++ linux-2.6.36-rc4/drivers/cbus/retu-user.c ++++ linux-2.6.36-rc7/drivers/cbus/retu-user.c @@ -0,0 +1,424 @@ +/** + * drivers/cbus/retu-user.c @@ -2418,7 +2418,7 @@ +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Mikko Ylinen"); --- /dev/null -+++ linux-2.6.36-rc4/drivers/cbus/retu-wdt.c ++++ linux-2.6.36-rc7/drivers/cbus/retu-wdt.c @@ -0,0 +1,387 @@ +/** + * drivers/cbus/retu-wdt.c @@ -2808,7 +2808,7 @@ +MODULE_LICENSE("GPL"); + --- /dev/null -+++ linux-2.6.36-rc4/drivers/cbus/tahvo.c ++++ linux-2.6.36-rc7/drivers/cbus/tahvo.c @@ -0,0 +1,443 @@ +/** + * drivers/cbus/tahvo.c @@ -3254,7 +3254,7 @@ +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Juha Yrjölä, David Weinehall, and Mikko Ylinen"); --- /dev/null -+++ linux-2.6.36-rc4/drivers/cbus/tahvo.h ++++ linux-2.6.36-rc7/drivers/cbus/tahvo.h @@ -0,0 +1,61 @@ +/* + * drivers/cbus/tahvo.h @@ -3318,7 +3318,7 @@ + +#endif /* __DRIVERS_CBUS_TAHVO_H */ --- /dev/null -+++ linux-2.6.36-rc4/drivers/cbus/tahvo-usb.c ++++ linux-2.6.36-rc7/drivers/cbus/tahvo-usb.c @@ -0,0 +1,788 @@ +/** + * drivers/cbus/tahvo-usb.c @@ -4109,7 +4109,7 @@ +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Juha Yrjölä, Tony Lindgren, and Timo Teräs"); --- /dev/null -+++ linux-2.6.36-rc4/drivers/cbus/tahvo-user.c ++++ linux-2.6.36-rc7/drivers/cbus/tahvo-user.c @@ -0,0 +1,406 @@ +/** + * drivers/cbus/tahvo-user.c @@ -4518,7 +4518,7 @@ +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Mikko Ylinen"); --- /dev/null -+++ linux-2.6.36-rc4/drivers/cbus/user_retu_tahvo.h ++++ linux-2.6.36-rc7/drivers/cbus/user_retu_tahvo.h @@ -0,0 +1,75 @@ +/** + * drivers/cbus/user_retu_tahvo.h @@ -4595,8 +4595,8 @@ +}; + +#endif ---- linux-2.6.36-rc4.orig/drivers/Makefile -+++ linux-2.6.36-rc4/drivers/Makefile +--- linux-2.6.36-rc7.orig/drivers/Makefile ++++ linux-2.6.36-rc7/drivers/Makefile @@ -74,7 +74,7 @@ obj-$(CONFIG_GAMEPORT) += input/gamepor obj-$(CONFIG_INPUT) += input/ obj-$(CONFIG_I2O) += message/ @@ -4606,9 +4606,9 @@ obj-$(CONFIG_PPS) += pps/ obj-$(CONFIG_W1) += w1/ obj-$(CONFIG_POWER_SUPPLY) += power/ ---- linux-2.6.36-rc4.orig/arch/arm/Kconfig -+++ linux-2.6.36-rc4/arch/arm/Kconfig -@@ -1760,6 +1760,10 @@ source "net/Kconfig" +--- linux-2.6.36-rc7.orig/arch/arm/Kconfig ++++ linux-2.6.36-rc7/arch/arm/Kconfig +@@ -1785,6 +1785,10 @@ source "net/Kconfig" source "drivers/Kconfig" 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 index f3b8edbe86..5e4c8208d0 100644 --- 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 @@ -1,14 +1,17 @@ --- arch/arm/mach-omap2/board-n8x0.c | 13 + drivers/cbus/Kconfig | 12 + - drivers/cbus/Makefile | 1 - drivers/cbus/n810bm.c | 396 +++++++++++++++++++++++++++++++++++++++ + 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 | 2 - 6 files changed, 425 insertions(+), 3 deletions(-) + drivers/cbus/retu.h | 3 + drivers/cbus/tahvo.h | 6 + 9 files changed, 548 insertions(+), 3 deletions(-) ---- linux-2.6.36-rc5.orig/drivers/cbus/Kconfig -+++ linux-2.6.36-rc5/drivers/cbus/Kconfig +--- 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. @@ -26,16 +29,18 @@ + If unsure, say N. + endmenu ---- linux-2.6.36-rc5.orig/drivers/cbus/Makefile -+++ linux-2.6.36-rc5/drivers/cbus/Makefile -@@ -12,3 +12,4 @@ obj-$(CONFIG_CBUS_RETU_WDT) += retu-wdt. +--- linux-2.6.36-rc7.orig/drivers/cbus/Makefile ++++ linux-2.6.36-rc7/drivers/cbus/Makefile +@@ -12,3 +12,6 @@ obj-$(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-rc5/drivers/cbus/n810bm.c -@@ -0,0 +1,396 @@ ++++ linux-2.6.36-rc7/drivers/cbus/n810bm_main.c +@@ -0,0 +1,397 @@ +/* + * Nokia n810 battery management + * @@ -66,13 +71,11 @@ + +#include "retu.h" +#include "tahvo.h" ++#include "lipocharge.h" + + +#define N810BM_CHECK_INTERVAL (HZ * 5) -+#define N810BM_MIN_VOLTAGE_THRES 3400 /* Absolute minimum voltage threshold */ -+/* FIXME: Not sure about the actual value of the low threshold, yet. -+ * We must give userspace a chance to detect undervoltage and perform -+ * a clean shutdown, before we flip the big switch. */ ++#define N810BM_MIN_VOLTAGE_THRES 3300 /* Absolute minimum voltage threshold */ + + +/* Battery related retu ADC channels */ @@ -126,8 +129,12 @@ + +struct n810bm { + struct platform_device *pdev; ++ + enum n810bm_capacity capacity; + struct timer_list check_timer; ++ ++ struct lipocharge *charger; ++ + spinlock_t lock; +}; + @@ -135,7 +142,7 @@ +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 "Nokia n810 battery management fatal fault: %s\n", 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"); @@ -230,50 +237,33 @@ +static enum n810bm_capacity n810bm_read_batt_capacity(struct n810bm *bm) +{ + int adc; -+ const unsigned int hyst = 16; ++ const unsigned int hyst = 20; + + adc = retu_adc_average(bm, RETU_ADC_BSI, 5); -+ if (adc < 0) ++ if (adc < 0) { ++ dev_err(&bm->pdev->dev, "Failed to read BSI ADC"); + return N810BM_CAP_UNKNOWN; ++ } + -+ if (adc >= 0x3AC - hyst && adc <= 0x3AC + hyst) ++ 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; +} + -+struct mv2p { -+ unsigned int mv; -+ unsigned int p; -+}; -+ +/* Convert a battery voltage (in mV) to percentage. */ +static unsigned int n810bm_mvolt2percent(unsigned int mv) +{ -+ /* FIXME: Create a correct table. */ -+ static const struct mv2p table[] = { -+ { .mv = 4200, .p = 100, }, -+ { .mv = 4150, .p = 90, }, -+ { .mv = 4100, .p = 80, }, -+ { .mv = 4050, .p = 70, }, -+ { .mv = 4000, .p = 60, }, -+ { .mv = 3950, .p = 50, }, -+ { .mv = 3900, .p = 40, }, -+ { .mv = 3850, .p = 30, }, -+ { .mv = 3800, .p = 20, }, -+ { .mv = 3750, .p = 10, }, -+ { .mv = 3700, .p = 0, }, -+ }; -+ const struct mv2p *e; -+ unsigned int i; -+ -+ for (i = 0; i < ARRAY_SIZE(table); i++) { -+ e = &table[i]; -+ if (mv >= e->mv) -+ return e->p; -+ } ++ const unsigned int minv = 3700; ++ const unsigned int maxv = 4150; ++ unsigned int percent; + -+ return 0; ++ mv = clamp(mv, minv, maxv); ++ percent = (mv - minv) * 100 / (maxv - minv); ++ ++ return percent; +} + +static void n810bm_check_timer(unsigned long data) @@ -296,6 +286,15 @@ + 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) @@ -378,6 +377,10 @@ + 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)); + @@ -385,6 +388,8 @@ + + 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: @@ -399,6 +404,7 @@ +{ + 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); @@ -432,8 +438,8 @@ +MODULE_DESCRIPTION("Nokia n810 battery management"); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Michael Buesch"); ---- linux-2.6.36-rc5.orig/drivers/cbus/retu.c -+++ linux-2.6.36-rc5/drivers/cbus/retu.c +--- 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 @@ -447,9 +453,17 @@ } void retu_set_clear_reg_bits(int reg, u16 set, u16 clear) ---- linux-2.6.36-rc5.orig/drivers/cbus/retu.h -+++ linux-2.6.36-rc5/drivers/cbus/retu.h -@@ -58,7 +58,7 @@ +--- 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); @@ -458,8 +472,8 @@ 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-rc5.orig/arch/arm/mach-omap2/board-n8x0.c -+++ linux-2.6.36-rc5/arch/arm/mach-omap2/board-n8x0.c +--- 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 @@ -906,6 +906,17 @@ static void __init n8x0_gpio_switches_in ARRAY_SIZE(n8x0_gpio_switches)); } @@ -487,3 +501,139 @@ } 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 */