From b9dfb81f2aa45be745a8aed9684076210aed4152 Mon Sep 17 00:00:00 2001 From: Mirko Vogt Date: Fri, 12 Dec 2008 00:02:36 +0000 Subject: add support for target 3c24xx (more known as Openmoko GTA02 "Freerunner") and merge it with the openmoko-target and the work Michael Buesch did SVN-Revision: 13609 --- .../0049-bq27000-battery-driver.patch.patch | 510 +++++++++++++++++++++ 1 file changed, 510 insertions(+) create mode 100755 target/linux/s3c24xx/patches/0049-bq27000-battery-driver.patch.patch (limited to 'target/linux/s3c24xx/patches/0049-bq27000-battery-driver.patch.patch') diff --git a/target/linux/s3c24xx/patches/0049-bq27000-battery-driver.patch.patch b/target/linux/s3c24xx/patches/0049-bq27000-battery-driver.patch.patch new file mode 100755 index 0000000000..9e7ae116d3 --- /dev/null +++ b/target/linux/s3c24xx/patches/0049-bq27000-battery-driver.patch.patch @@ -0,0 +1,510 @@ +From 2bab304b10f077cb88d5b5f5bd7e50c16aac2132 Mon Sep 17 00:00:00 2001 +From: mokopatches +Date: Fri, 25 Jul 2008 22:21:23 +0100 +Subject: [PATCH] bq27000-battery-driver.patch + +--- + arch/arm/mach-s3c2440/Kconfig | 2 + + arch/arm/mach-s3c2440/mach-gta02.c | 21 ++ + drivers/power/Kconfig | 7 +- + drivers/power/Makefile | 1 + + drivers/power/bq27000_battery.c | 375 ++++++++++++++++++++++++++++++++++++ + include/linux/bq27000_battery.h | 12 ++ + 6 files changed, 417 insertions(+), 1 deletions(-) + create mode 100644 drivers/power/bq27000_battery.c + create mode 100644 include/linux/bq27000_battery.h + +diff --git a/arch/arm/mach-s3c2440/Kconfig b/arch/arm/mach-s3c2440/Kconfig +index 3015aaf..b417f8e 100644 +--- a/arch/arm/mach-s3c2440/Kconfig ++++ b/arch/arm/mach-s3c2440/Kconfig +@@ -79,6 +79,8 @@ config MACH_NEO1973_GTA02 + bool "FIC Neo1973 GSM Phone (GTA02 Hardware)" + select CPU_S3C2442 + select SENSORS_PCF50633 ++ select POWER_SUPPLY ++ select GTA02_HDQ + help + Say Y here if you are using the FIC Neo1973 GSM Phone + +diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c +index cea76e7..3816ea5 100644 +--- a/arch/arm/mach-s3c2440/mach-gta02.c ++++ b/arch/arm/mach-s3c2440/mach-gta02.c +@@ -81,6 +81,8 @@ + + #include + #include "fiq_c_isr.h" ++#include ++#include + + /* arbitrates which sensor IRQ owns the shared SPI bus */ + static spinlock_t motion_irq_lock; +@@ -583,6 +585,24 @@ struct platform_device gta02_hdq_device = { + }; + #endif + ++/* BQ27000 Battery */ ++ ++struct bq27000_platform_data bq27000_pdata = { ++ .name = "bat", ++ .rsense_mohms = 20, ++ .hdq_read = gta02hdq_read, ++ .hdq_write = gta02hdq_write, ++ .hdq_initialized = gta02hdq_initialized, ++}; ++ ++struct platform_device bq27000_battery_device = { ++ .name = "bq27000-battery", ++ .dev = { ++ .platform_data = &bq27000_pdata, ++ }, ++}; ++ ++ + /* NOR Flash */ + + #define GTA02_FLASH_BASE 0x18000000 /* GCS3 */ +@@ -1271,6 +1291,7 @@ static void __init gta02_machine_init(void) + case GTA02v5_SYSTEM_REV: + case GTA02v6_SYSTEM_REV: + platform_device_register(>a02_hdq_device); ++ platform_device_register(&bq27000_battery_device); + break; + default: + break; +diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig +index 0a4515d..feb8b0a 100644 +--- a/drivers/power/Kconfig ++++ b/drivers/power/Kconfig +@@ -49,7 +49,10 @@ config BATTERY_OLPC + help + Say Y to enable support for the battery on the OLPC laptop. + +-endif # POWER_SUPPLY ++config BATTERY_BQ27000_HDQ ++ tristate "BQ27000 HDQ battery monitor driver" ++ help ++ Say Y to enable support for the battery on the Neo Freerunner + + config GTA02_HDQ + tristate "Neo Freerunner HDQ" +@@ -58,3 +61,5 @@ config GTA02_HDQ + Say Y to enable support for communicating with an HDQ battery + on the Neo Freerunner. You probably want to select + at least BATTERY_BQ27000_HDQ as well ++ ++endif # POWER_SUPPLY +diff --git a/drivers/power/Makefile b/drivers/power/Makefile +index 88f227f..d7e87ad 100644 +--- a/drivers/power/Makefile ++++ b/drivers/power/Makefile +@@ -20,5 +20,6 @@ obj-$(CONFIG_APM_POWER) += apm_power.o + obj-$(CONFIG_BATTERY_DS2760) += ds2760_battery.o + obj-$(CONFIG_BATTERY_PMU) += pmu_battery.o + obj-$(CONFIG_BATTERY_OLPC) += olpc_battery.o ++obj-$(CONFIG_BATTERY_BQ27000_HDQ) += bq27000_battery.o + + obj-$(CONFIG_GTA02_HDQ) += gta02_hdq.o +diff --git a/drivers/power/bq27000_battery.c b/drivers/power/bq27000_battery.c +new file mode 100644 +index 0000000..d19186a +--- /dev/null ++++ b/drivers/power/bq27000_battery.c +@@ -0,0 +1,375 @@ ++/* ++ * Driver for batteries with bq27000 chips inside via HDQ ++ * ++ * Copyright 2008 Openmoko, Inc ++ * Andy Green ++ * ++ * based on ds2760 driver, original copyright notice for that ---> ++ * ++ * Copyright © 2007 Anton Vorontsov ++ * 2004-2007 Matt Reimer ++ * 2004 Szabolcs Gyurko ++ * ++ * Use consistent with the GNU GPL is permitted, ++ * provided that this copyright notice is ++ * preserved in its entirety in all copies and derived works. ++ * ++ * Author: Anton Vorontsov ++ * February 2007 ++ * ++ * Matt Reimer ++ * April 2004, 2005, 2007 ++ * ++ * Szabolcs Gyurko ++ * September 2004 ++ */ ++ ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++ ++enum bq27000_regs { ++ /* RAM regs */ ++ /* read-write after this */ ++ BQ27000_CTRL = 0, /* Device Control Register */ ++ BQ27000_MODE, /* Device Mode Register */ ++ BQ27000_AR_L, /* At-Rate H L */ ++ BQ27000_AR_H, ++ /* read-only after this */ ++ BQ27000_ARTTE_L, /* At-Rate Time To Empty H L */ ++ BQ27000_ARTTE_H, ++ BQ27000_TEMP_L, /* Reported Temperature H L */ ++ BQ27000_TEMP_H, ++ BQ27000_VOLT_L, /* Reported Voltage H L */ ++ BQ27000_VOLT_H, ++ BQ27000_FLAGS, /* Status Flags */ ++ BQ27000_RSOC, /* Relative State of Charge */ ++ BQ27000_NAC_L, /* Nominal Available Capacity H L */ ++ BQ27000_NAC_H, ++ BQ27000_CACD_L, /* Discharge Compensated H L */ ++ BQ27000_CACD_H, ++ BQ27000_CACT_L, /* Temperature Compensated H L */ ++ BQ27000_CACT_H, ++ BQ27000_LMD_L, /* Last measured discharge H L */ ++ BQ27000_LMD_H, ++ BQ27000_AI_L, /* Average Current H L */ ++ BQ27000_AI_H, ++ BQ27000_TTE_L, /* Time to Empty H L */ ++ BQ27000_TTE_H, ++ BQ27000_TTF_L, /* Time to Full H L */ ++ BQ27000_TTF_H, ++ BQ27000_SI_L, /* Standby Current H L */ ++ BQ27000_SI_H, ++ BQ27000_STTE_L, /* Standby Time To Empty H L */ ++ BQ27000_STTE_H, ++ BQ27000_MLI_L, /* Max Load Current H L */ ++ BQ27000_MLI_H, ++ BQ27000_MLTTE_L, /* Max Load Time To Empty H L */ ++ BQ27000_MLTTE_H, ++ BQ27000_SAE_L, /* Available Energy H L */ ++ BQ27000_SAE_H, ++ BQ27000_AP_L, /* Available Power H L */ ++ BQ27000_AP_H, ++ BQ27000_TTECP_L, /* Time to Empty at Constant Power H L */ ++ BQ27000_TTECP_H, ++ BQ27000_CYCL_L, /* Cycle count since learning cycle H L */ ++ BQ27000_CYCL_H, ++ BQ27000_CYCT_L, /* Cycle Count Total H L */ ++ BQ27000_CYCT_H, ++ BQ27000_CSOC, /* Compensated State Of Charge */ ++ /* EEPROM regs */ ++ /* read-write after this */ ++ BQ27000_EE_EE_EN = 0x6e, /* EEPROM Program Enable */ ++ BQ27000_EE_ILMD = 0x76, /* Initial Last Measured Discharge High Byte */ ++ BQ27000_EE_SEDVF, /* Scaled EDVF Threshold */ ++ BQ27000_EE_SEDV1, /* Scaled EDV1 Threshold */ ++ BQ27000_EE_ISLC, /* Initial Standby Load Current */ ++ BQ27000_EE_DMFSD, /* Digital Magnitude Filter and Self Discharge */ ++ BQ27000_EE_TAPER, /* Aging Estimate Enable, Charge Termination Taper */ ++ BQ27000_EE_PKCFG, /* Pack Configuration Values */ ++ BQ27000_EE_IMLC, /* Initial Max Load Current or ID #3 */ ++ BQ27000_EE_DCOMP, /* Discharge rate compensation constants or ID #2 */ ++ BQ27000_EE_TCOMP, /* Temperature Compensation constants or ID #1 */ ++}; ++ ++enum bq27000_status_flags { ++ BQ27000_STATUS_CHGS = 0x80, /* 1 = being charged */ ++ BQ27000_STATUS_NOACT = 0x40, /* 1 = no activity */ ++ BQ27000_STATUS_IMIN = 0x20, /* 1 = Lion taper current mode */ ++ BQ27000_STATUS_CI = 0x10, /* 1 = capacity likely innacurate */ ++ BQ27000_STATUS_CALIP = 0x08, /* 1 = calibration in progress */ ++ BQ27000_STATUS_VDQ = 0x04, /* 1 = capacity should be accurate */ ++ BQ27000_STATUS_EDV1 = 0x02, /* 1 = end of discharge.. <6% left */ ++ BQ27000_STATUS_EDVF = 0x01, /* 1 = no, it's really empty now */ ++}; ++ ++#define NANOVOLTS_UNIT 3750 ++ ++struct bq27000_device_info { ++ struct device *dev; ++ struct power_supply bat; ++ ++ int rsense_mohms; /* from platform */ ++ ++ int (*hdq_initialized)(void); /* from platform */ ++ int (*hdq_read)(int); /* from platform */ ++ int (*hdq_write)(int, u8); /* from platform */ ++}; ++ ++/* ++ * reading 16 bit values over HDQ has a special hazard where the ++ * hdq device firmware can update the 16-bit register during the time we ++ * read the two halves. TI document SLUS556D recommends the algorithm here ++ * to avoid trouble ++ */ ++ ++static int hdq_read16(struct bq27000_device_info *di, int address) ++{ ++ int acc; ++ int high; ++ int retries = 3; ++ ++ while (retries--) { ++ ++ high = (di->hdq_read)(address + 1); /* high part */ ++ ++ if (high < 0) ++ return high; ++ acc = (di->hdq_read)(address); ++ if (acc < 0) ++ return acc; ++ ++ /* confirm high didn't change between reading it and low */ ++ if (high == (di->hdq_read)(address + 1)) ++ return (high << 8) | acc; ++ } ++ ++ return -ETIME; ++} ++ ++#define to_bq27000_device_info(x) container_of((x), \ ++ struct bq27000_device_info, \ ++ bat); ++ ++static void bq27000_battery_external_power_changed(struct power_supply *psy) ++{ ++ struct bq27000_device_info *di = to_bq27000_device_info(psy); ++ ++ dev_dbg(di->dev, "%s\n", __FUNCTION__); ++} ++ ++static int bq27000_battery_get_property(struct power_supply *psy, ++ enum power_supply_property psp, ++ union power_supply_propval *val) ++{ ++ int v, n; ++ struct bq27000_device_info *di = to_bq27000_device_info(psy); ++ ++ if (!(di->hdq_initialized)()) ++ return -EINVAL; ++ ++ switch (psp) { ++ case POWER_SUPPLY_PROP_STATUS: ++ val->intval = POWER_SUPPLY_STATUS_UNKNOWN; ++ v = hdq_read16(di, BQ27000_AI_L); ++ if (v < 0) ++ return v; ++ if (v < 2) { /* no real activity on the battery */ ++ if (!hdq_read16(di, BQ27000_TTF_L)) ++ val->intval = POWER_SUPPLY_STATUS_FULL; ++ else ++ val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; ++ break; ++ } ++ /* power is actually going in or out... */ ++ v = (di->hdq_read)(BQ27000_FLAGS); ++ if (v < 0) ++ return v; ++ if (v & BQ27000_STATUS_CHGS) ++ val->intval = POWER_SUPPLY_STATUS_CHARGING; ++ else ++ val->intval = POWER_SUPPLY_STATUS_DISCHARGING; ++ break; ++ case POWER_SUPPLY_PROP_VOLTAGE_NOW: ++ v = hdq_read16(di, BQ27000_VOLT_L); ++ if (v < 0) ++ return v; ++ val->intval = v * 1000; /* mV -> uV */ ++ break; ++ case POWER_SUPPLY_PROP_CURRENT_NOW: ++ v = (di->hdq_read)(BQ27000_FLAGS); ++ if (v < 0) ++ return v; ++ if (v & BQ27000_STATUS_CHGS) ++ n = -NANOVOLTS_UNIT; ++ else ++ n = NANOVOLTS_UNIT; ++ v = hdq_read16(di, BQ27000_AI_L); ++ if (v < 0) ++ return v; ++ val->intval = (v * n) / di->rsense_mohms; ++ break; ++ case POWER_SUPPLY_PROP_CHARGE_FULL: ++ v = hdq_read16(di, BQ27000_LMD_L); ++ if (v < 0) ++ return v; ++ val->intval = (v * 3570) / di->rsense_mohms; ++ break; ++ case POWER_SUPPLY_PROP_TEMP: ++ v = hdq_read16(di, BQ27000_TEMP_L); ++ if (v < 0) ++ return v; ++ /* K (in 0.25K units) is 273.15 up from C (in 0.1C)*/ ++ /* 10926 = 27315 * 4 / 10 */ ++ val->intval = (((long)v * 10l) - 10926) / 4; ++ break; ++ case POWER_SUPPLY_PROP_TECHNOLOGY: ++ val->intval = POWER_SUPPLY_TECHNOLOGY_LION; ++ break; ++ case POWER_SUPPLY_PROP_CAPACITY: ++ val->intval = (di->hdq_read)(BQ27000_RSOC); ++ if (val->intval < 0) ++ return val->intval; ++ break; ++ case POWER_SUPPLY_PROP_PRESENT: ++ v = (di->hdq_read)(BQ27000_RSOC); ++ val->intval = !(v < 0); ++ break; ++ case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW: ++ v = hdq_read16(di, BQ27000_TTE_L); ++ if (v < 0) ++ return v; ++ val->intval = 60 * v; ++ break; ++ case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW: ++ v = hdq_read16(di, BQ27000_TTF_L); ++ if (v < 0) ++ return v; ++ val->intval = 60 * v; ++ break; ++ default: ++ return -EINVAL; ++ } ++ ++ return 0; ++} ++ ++static enum power_supply_property bq27000_battery_props[] = { ++ POWER_SUPPLY_PROP_STATUS, ++ POWER_SUPPLY_PROP_VOLTAGE_NOW, ++ POWER_SUPPLY_PROP_CURRENT_NOW, ++ POWER_SUPPLY_PROP_CHARGE_FULL, ++ POWER_SUPPLY_PROP_TEMP, ++ POWER_SUPPLY_PROP_TECHNOLOGY, ++ POWER_SUPPLY_PROP_PRESENT, ++ POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, ++ POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, ++ POWER_SUPPLY_PROP_MODEL_NAME, ++ POWER_SUPPLY_PROP_CAPACITY ++}; ++ ++static int bq27000_battery_probe(struct platform_device *pdev) ++{ ++ int retval = 0; ++ struct bq27000_device_info *di; ++ struct bq27000_platform_data *pdata; ++ ++ dev_info(&pdev->dev, "BQ27000 Battery Driver (C) 2008 Openmoko, Inc\n"); ++ ++ di = kzalloc(sizeof(*di), GFP_KERNEL); ++ if (!di) { ++ retval = -ENOMEM; ++ goto di_alloc_failed; ++ } ++ ++ platform_set_drvdata(pdev, di); ++ ++ pdata = pdev->dev.platform_data; ++ di->dev = &pdev->dev; ++ /* di->w1_dev = pdev->dev.parent; */ ++ di->bat.name = pdata->name; ++ di->bat.type = POWER_SUPPLY_TYPE_BATTERY; ++ di->bat.properties = bq27000_battery_props; ++ di->bat.num_properties = ARRAY_SIZE(bq27000_battery_props); ++ di->bat.get_property = bq27000_battery_get_property; ++ di->bat.external_power_changed = ++ bq27000_battery_external_power_changed; ++ di->hdq_read = pdata->hdq_read; ++ di->hdq_write = pdata->hdq_write; ++ di->rsense_mohms = pdata->rsense_mohms; ++ di->hdq_initialized = pdata->hdq_initialized; ++ ++ retval = power_supply_register(&pdev->dev, &di->bat); ++ if (retval) { ++ dev_err(di->dev, "failed to register battery\n"); ++ goto batt_failed; ++ } ++ ++ return 0; ++ ++batt_failed: ++ kfree(di); ++di_alloc_failed: ++ return retval; ++} ++ ++static int bq27000_battery_remove(struct platform_device *pdev) ++{ ++ struct bq27000_device_info *di = platform_get_drvdata(pdev); ++ ++ power_supply_unregister(&di->bat); ++ ++ return 0; ++} ++ ++#ifdef CONFIG_PM ++ ++static int bq27000_battery_suspend(struct platform_device *pdev, ++ pm_message_t state) ++{ ++ return 0; ++} ++ ++static int bq27000_battery_resume(struct platform_device *pdev) ++{ ++ return 0; ++} ++ ++#else ++ ++#define bq27000_battery_suspend NULL ++#define bq27000_battery_resume NULL ++ ++#endif /* CONFIG_PM */ ++ ++static struct platform_driver bq27000_battery_driver = { ++ .driver = { ++ .name = "bq27000-battery", ++ }, ++ .probe = bq27000_battery_probe, ++ .remove = bq27000_battery_remove, ++ .suspend = bq27000_battery_suspend, ++ .resume = bq27000_battery_resume, ++}; ++ ++static int __init bq27000_battery_init(void) ++{ ++ return platform_driver_register(&bq27000_battery_driver); ++} ++ ++static void __exit bq27000_battery_exit(void) ++{ ++ platform_driver_unregister(&bq27000_battery_driver); ++} ++ ++module_init(bq27000_battery_init); ++module_exit(bq27000_battery_exit); ++ ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Andy Green "); ++MODULE_DESCRIPTION("bq27000 battery driver"); +diff --git a/include/linux/bq27000_battery.h b/include/linux/bq27000_battery.h +new file mode 100644 +index 0000000..36b4f20 +--- /dev/null ++++ b/include/linux/bq27000_battery.h +@@ -0,0 +1,12 @@ ++#ifndef __BQ27000_BATTERY_H__ ++#define __BQ27000_BATTERY_H__ ++ ++struct bq27000_platform_data { ++ const char *name; ++ int rsense_mohms; ++ int (*hdq_read)(int); ++ int (*hdq_write)(int, u8); ++ int (*hdq_initialized)(void); ++}; ++ ++#endif +-- +1.5.6.3 + -- cgit v1.2.3