diff options
author | Gabor Juhos <juhosg@openwrt.org> | 2012-04-21 17:16:40 +0000 |
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committer | Gabor Juhos <juhosg@openwrt.org> | 2012-04-21 17:16:40 +0000 |
commit | 4771c59d13df559ce13dc525f8eace687ab9e824 (patch) | |
tree | 1c86a6a6ca48c7aab684dc379a7d31e6b88b16cb /target/linux/omap24xx/patches-2.6.38/900-n810-battery-management.patch | |
parent | aa5be5eba1f6d0e414f05c1a05ba847b5d10d062 (diff) | |
download | upstream-4771c59d13df559ce13dc525f8eace687ab9e824.tar.gz upstream-4771c59d13df559ce13dc525f8eace687ab9e824.tar.bz2 upstream-4771c59d13df559ce13dc525f8eace687ab9e824.zip |
omap24xx: remove 2.6.38 support
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31426 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/omap24xx/patches-2.6.38/900-n810-battery-management.patch')
-rw-r--r-- | target/linux/omap24xx/patches-2.6.38/900-n810-battery-management.patch | 1927 |
1 files changed, 0 insertions, 1927 deletions
diff --git a/target/linux/omap24xx/patches-2.6.38/900-n810-battery-management.patch b/target/linux/omap24xx/patches-2.6.38/900-n810-battery-management.patch deleted file mode 100644 index beef0b60b1..0000000000 --- a/target/linux/omap24xx/patches-2.6.38/900-n810-battery-management.patch +++ /dev/null @@ -1,1927 +0,0 @@ ---- a/drivers/cbus/Kconfig -+++ b/drivers/cbus/Kconfig -@@ -72,4 +72,12 @@ 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. -+ -+ If unsure, say N. -+ - endmenu ---- a/drivers/cbus/Makefile -+++ b/drivers/cbus/Makefile -@@ -11,3 +11,6 @@ obj-$(CONFIG_CBUS_RETU_POWERBUTTON) += r - obj-$(CONFIG_CBUS_RETU_RTC) += retu-rtc.o - obj-$(CONFIG_CBUS_RETU_WDT) += retu-wdt.o - obj-$(CONFIG_CBUS_RETU_HEADSET) += retu-headset.o -+n810bm-y += n810bm_main.o -+n810bm-y += lipocharge.o -+obj-$(CONFIG_N810BM) += n810bm.o ---- /dev/null -+++ b/drivers/cbus/n810bm_main.c -@@ -0,0 +1,1586 @@ -+/* -+ * Nokia n810 battery management -+ * -+ * WARNING: This driver is based on unconfirmed documentation. -+ * It is possibly dangerous to use this software. -+ * Use this software at your own risk! -+ * -+ * Copyright (c) 2010-2011 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. -+ */ -+ -+#define DEBUG -+ -+#include <linux/module.h> -+#include <linux/device.h> -+#include <linux/platform_device.h> -+#include <linux/slab.h> -+#include <linux/mutex.h> -+#include <linux/timer.h> -+#include <linux/firmware.h> -+#include <linux/bitops.h> -+#include <linux/workqueue.h> -+#include <linux/delay.h> -+ -+#include "cbus.h" -+#include "retu.h" -+#include "tahvo.h" -+#include "lipocharge.h" -+ -+ -+#define N810BM_PMM_BLOCK_FILENAME "n810-cal-bme-pmm.fw" -+#define N810BM_PMM_BLOCK_SIZE 0x600 -+#define N810BM_PMM_GROUP_SIZE 0x200 -+#define N810BM_PMM_ELEM_SIZE 0x10 -+ -+#define N810BM_CHECK_INTERVAL (HZ * 2) -+#define N810BM_MIN_VOLTAGE_THRES 3200 /* Absolute minimum voltage threshold */ -+ -+ -+/* 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 -+ */ -+ -+ -+/* PMM block ADC IDs */ -+enum n810bm_pmm_adc_id { -+ N810BM_PMM_ADC_BATVOLT = 0x01, /* Battery voltage */ -+ N810BM_PMM_ADC_CHGVOLT = 0x02, /* Charger voltage */ -+ N810BM_PMM_ADC_GND2 = 0x03, /* Ground 0V */ -+ N810BM_PMM_ADC_BSI = 0x04, /* Battery size indicator */ -+ N810BM_PMM_ADC_BATTEMP = 0x05, /* Battery temperature */ -+ N810BM_PMM_ADC_HEADSET = 0x06, /* Headset detection */ -+ N810BM_PMM_ADC_HOOKDET = 0x07, /* Hook detection */ -+ N810BM_PMM_ADC_LIGHTSENS = 0x08, /* Light sensor */ -+ N810BM_PMM_ADC_BATCURR = 0x0E, /* Battery current */ -+ N810BM_PMM_ADC_BKUPVOLT = 0x13, /* Backup battery voltage */ -+ N810BM_PMM_ADC_LIGHTTEMP = 0x14, /* Light sensor temperature */ -+ N810BM_PMM_ADC_RFGP = 0x15, /* RF GP */ -+ N810BM_PMM_ADC_WBTX = 0x16, /* Wideband TX detection */ -+ N810BM_PMM_ADC_RETUTEMP = 0x17, /* RETU chip temperature */ -+ N810BM_PMM_ADC_0xFE = 0xFE, -+}; -+ -+struct n810bm_adc_calib { -+ enum n810bm_pmm_adc_id id; -+ u8 flags; -+ u8 adc_groupnr; -+ u32 field1; -+ u32 field2; -+ u16 field3; -+ u16 field4; -+}; -+ -+struct n810bm_calib { -+ struct n810bm_adc_calib adc[25]; -+}; -+ -+enum n810bm_capacity { -+ N810BM_CAP_UNKNOWN = -1, -+ N810BM_CAP_NONE = 0, -+ N810BM_CAP_1500MAH = 1500, /* 1500 mAh battery */ -+}; -+ -+enum n810bm_notify_flags { -+ N810BM_NOTIFY_charger_present, -+ N810BM_NOTIFY_charger_state, -+ N810BM_NOTIFY_charger_pwm, -+}; -+ -+struct n810bm { -+ bool battery_present; /* A battery is inserted */ -+ bool charger_present; /* The charger is connected */ -+ enum n810bm_capacity capacity; /* The capacity of the inserted battery (if any) */ -+ -+ bool charger_enabled; /* Want to charge? */ -+ struct lipocharge charger; /* Charger subsystem */ -+ unsigned int active_current_pwm; /* Active value of TAHVO_REG_CHGCURR */ -+ int current_measure_enabled; /* Current measure enable refcount */ -+ -+ struct platform_device *pdev; -+ struct n810bm_calib calib; /* Calibration data */ -+ -+ bool verbose_charge_log; /* Verbose charge logging */ -+ -+ unsigned long notify_flags; -+ struct work_struct notify_work; -+ struct work_struct currmeas_irq_work; -+ struct delayed_work periodic_check_work; -+ -+ bool initialized; /* The hardware was initialized */ -+ struct mutex mutex; -+}; -+ -+static void n810bm_notify_charger_present(struct n810bm *bm); -+static void n810bm_notify_charger_state(struct n810bm *bm); -+static void n810bm_notify_charger_pwm(struct n810bm *bm); -+ -+ -+static struct platform_device *n810bm_retu_device; -+static struct platform_device *n810bm_tahvo_device; -+ -+ -+static inline struct n810bm * device_to_n810bm(struct device *dev) -+{ -+ struct platform_device *pdev = to_platform_device(dev); -+ struct n810bm *bm = platform_get_drvdata(pdev); -+ -+ return bm; -+} -+ -+static inline bool n810bm_known_battery_present(struct n810bm *bm) -+{ -+ return bm->battery_present && -+ bm->capacity != N810BM_CAP_UNKNOWN && -+ bm->capacity != N810BM_CAP_NONE; -+} -+ -+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); -+ cbus_emergency(); -+} -+ -+static u16 tahvo_read(struct n810bm *bm, unsigned int reg) -+{ -+ return tahvo_read_reg(reg); -+} -+ -+static void tahvo_maskset(struct n810bm *bm, unsigned int reg, u16 mask, u16 set) -+{ -+ tahvo_set_clear_reg_bits(reg, set, mask); -+} -+ -+static inline void tahvo_write(struct n810bm *bm, unsigned int reg, u16 value) -+{ -+ unsigned long flags; -+ -+ spin_lock_irqsave(&tahvo_lock, flags); -+ tahvo_write_reg(reg, value); -+ spin_unlock_irqrestore(&tahvo_lock, flags); -+} -+ -+static inline void tahvo_set(struct n810bm *bm, unsigned int reg, u16 mask) -+{ -+ tahvo_set_clear_reg_bits(reg, mask, mask); -+} -+ -+static inline void tahvo_clear(struct n810bm *bm, unsigned int reg, u16 mask) -+{ -+ tahvo_set_clear_reg_bits(reg, 0, mask); -+} -+ -+static u16 retu_read(struct n810bm *bm, unsigned int reg) -+{ -+ return retu_read_reg(&n810bm_retu_device->dev, reg); -+} -+ -+static void retu_maskset(struct n810bm *bm, unsigned int reg, u16 mask, u16 set) -+{ -+ retu_set_clear_reg_bits(&n810bm_retu_device->dev, reg, set, mask); -+} -+ -+static inline void retu_write(struct n810bm *bm, unsigned int reg, u16 value) -+{ -+ retu_write_reg(&n810bm_retu_device->dev, reg, 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(&n810bm_retu_device->dev, chan); -+ if (ret < 0) -+ return ret; -+ value += ret; -+ } -+ value /= nr_passes; -+ -+ return value; -+} -+ -+static struct n810bm_adc_calib * n810bm_get_adc_calib(struct n810bm *bm, -+ enum n810bm_pmm_adc_id id) -+{ -+ unsigned int index = 0; -+ struct n810bm_adc_calib *cal; -+ -+ if (id != N810BM_PMM_ADC_0xFE) -+ index = (unsigned int)id + 1; -+ if (index >= ARRAY_SIZE(bm->calib.adc)) -+ return NULL; -+ -+ cal = &bm->calib.adc[index]; -+ WARN_ON(cal->id && cal->id != id); -+ -+ return cal; -+} -+ -+static int pmm_record_get(struct n810bm *bm, -+ const struct firmware *pmm_block, -+ void *buffer, size_t length, -+ unsigned int group, unsigned int element, unsigned int offset) -+{ -+ const u8 *pmm_area = pmm_block->data; -+ u8 active_group_mask; -+ -+ if (pmm_block->size != N810BM_PMM_BLOCK_SIZE) -+ return -EINVAL; -+ if (group >= N810BM_PMM_BLOCK_SIZE / N810BM_PMM_GROUP_SIZE) -+ return -EINVAL; -+ if (element >= N810BM_PMM_GROUP_SIZE / N810BM_PMM_ELEM_SIZE) -+ return -EINVAL; -+ if (offset >= N810BM_PMM_ELEM_SIZE || length > N810BM_PMM_ELEM_SIZE || -+ length + offset > N810BM_PMM_ELEM_SIZE) -+ return -EINVAL; -+ -+ active_group_mask = pmm_area[16]; -+ if (!(active_group_mask & (1 << group))) { -+ dev_dbg(&bm->pdev->dev, "pwm_record_get: Requested group %u, " -+ "but group is not active", group); -+ return -ENOENT; -+ } -+ -+ memcpy(buffer, -+ pmm_area + group * N810BM_PMM_GROUP_SIZE -+ + element * N810BM_PMM_ELEM_SIZE -+ + offset, -+ length); -+ -+ return 0; -+} -+ -+/* PMM block group 1 element */ -+struct group1_element { -+ u8 id; -+ u8 flags; -+ u8 adc_groupnr; -+ u8 _padding; -+ __le32 field1; -+ __le32 field2; -+} __packed; -+ -+static int extract_group1_elem(struct n810bm *bm, -+ const struct firmware *pmm_block, -+ const enum n810bm_pmm_adc_id *pmm_adc_ids, size_t nr_pmm_adc_ids, -+ u32 field1_mask, u32 field2_mask) -+{ -+ struct group1_element elem; -+ int err; -+ unsigned int i, element_nr; -+ struct n810bm_adc_calib *adc_calib; -+ -+ for (i = 0; i < nr_pmm_adc_ids; i++) { -+ element_nr = (unsigned int)(pmm_adc_ids[i]) + 3; -+ -+ err = pmm_record_get(bm, pmm_block, &elem, sizeof(elem), -+ 1, element_nr, 0); -+ if (err) -+ continue; -+ adc_calib = n810bm_get_adc_calib(bm, elem.id); -+ if (!adc_calib) { -+ dev_err(&bm->pdev->dev, "extract_group1_elem: " -+ "Could not get calib element for 0x%02X", -+ elem.id); -+ return -EINVAL; -+ } -+ -+ if (adc_calib->flags == elem.flags) { -+ adc_calib->field1 = le32_to_cpu(elem.field1) & field1_mask; -+ adc_calib->field2 = le32_to_cpu(elem.field2) & field2_mask; -+ } else { -+ dev_dbg(&bm->pdev->dev, "extract_group1_elem: " -+ "Not extracting fields due to flags mismatch: " -+ "0x%02X vs 0x%02X", -+ adc_calib->flags, elem.flags); -+ } -+ } -+ -+ return 0; -+} -+ -+static int n810bm_parse_pmm_group1(struct n810bm *bm, -+ const struct firmware *pmm_block) -+{ -+ struct n810bm_adc_calib *adc_calib; -+ struct group1_element elem; -+ int err; -+ -+ static const enum n810bm_pmm_adc_id pmm_adc_ids_1[] = { -+ N810BM_PMM_ADC_BATVOLT, -+ N810BM_PMM_ADC_CHGVOLT, -+ N810BM_PMM_ADC_BKUPVOLT, -+ N810BM_PMM_ADC_BATCURR, -+ }; -+ static const enum n810bm_pmm_adc_id pmm_adc_ids_2[] = { -+ N810BM_PMM_ADC_BSI, -+ }; -+ static const enum n810bm_pmm_adc_id pmm_adc_ids_3[] = { -+ N810BM_PMM_ADC_BATTEMP, -+ }; -+ -+ /* Parse element 2 */ -+ err = pmm_record_get(bm, pmm_block, &elem, sizeof(elem), -+ 1, 2, 0); -+ if (err) { -+ dev_err(&bm->pdev->dev, -+ "PMM: Failed to get group 1 / element 2"); -+ return err; -+ } -+ if (elem.id == N810BM_PMM_ADC_0xFE && elem.flags == 0x05) { -+ adc_calib = n810bm_get_adc_calib(bm, elem.id); -+ if (!adc_calib) { -+ dev_err(&bm->pdev->dev, -+ "calib extract: Failed to get 0xFE calib"); -+ return -EINVAL; -+ } -+ adc_calib->id = elem.id; -+ adc_calib->flags = elem.flags; -+ adc_calib->field1 = le32_to_cpu(elem.field1); -+ adc_calib->field2 = le32_to_cpu(elem.field2); -+ } -+ -+ err = extract_group1_elem(bm, pmm_block, -+ pmm_adc_ids_1, ARRAY_SIZE(pmm_adc_ids_1), -+ 0xFFFFFFFF, 0xFFFFFFFF); -+ if (err) -+ return err; -+ err = extract_group1_elem(bm, pmm_block, -+ pmm_adc_ids_2, ARRAY_SIZE(pmm_adc_ids_2), -+ 0xFFFFFFFF, 0); -+ if (err) -+ return err; -+ err = extract_group1_elem(bm, pmm_block, -+ pmm_adc_ids_3, ARRAY_SIZE(pmm_adc_ids_3), -+ 0xFFFFFFFF, 0x0000FFFF); -+ if (err) -+ return err; -+ -+ return 0; -+} -+ -+static int n810bm_parse_pmm_group2(struct n810bm *bm, -+ const struct firmware *pmm_block) -+{ -+ dev_err(&bm->pdev->dev, "TODO: CAL BME PMM group 2 parser not implemented, yet"); -+ return -EOPNOTSUPP; -+} -+ -+static void n810bm_adc_calib_set_defaults(struct n810bm *bm) -+{ -+ struct n810bm_adc_calib *adc_calib; -+ unsigned int i; -+ -+ static const struct n810bm_adc_calib defaults[] = { -+ /* ADC group-nr 0 */ -+ { -+ .id = N810BM_PMM_ADC_HEADSET, -+ .flags = 0x00, -+ .adc_groupnr = 0, -+ }, { -+ .id = N810BM_PMM_ADC_HOOKDET, -+ .flags = 0x00, -+ .adc_groupnr = 0, -+ }, { -+ .id = N810BM_PMM_ADC_RFGP, -+ .flags = 0x00, -+ .adc_groupnr = 0, -+ }, { -+ .id = N810BM_PMM_ADC_LIGHTSENS, -+ .flags = 0x00, -+ .adc_groupnr = 0, -+ }, { -+ .id = N810BM_PMM_ADC_WBTX, -+ .flags = 0x00, -+ .adc_groupnr = 0, -+ }, { -+ .id = N810BM_PMM_ADC_RETUTEMP, -+ .flags = 0x00, -+ .adc_groupnr = 0, -+ }, { -+ .id = N810BM_PMM_ADC_GND2, -+ .flags = 0x00, -+ .adc_groupnr = 0, -+ }, -+ /* ADC group-nr 1 */ -+ { -+ .id = N810BM_PMM_ADC_0xFE, -+ .flags = 0x05, -+ .adc_groupnr = 1, -+ .field1 = (u32)-2, -+ .field2 = 13189, -+ }, { -+ .id = N810BM_PMM_ADC_BATVOLT, -+ .flags = 0x01, -+ .adc_groupnr = 1, -+ .field1 = 2527, -+ .field2 = 21373, -+ }, { -+ .id = N810BM_PMM_ADC_CHGVOLT, -+ .flags = 0x01, -+ .adc_groupnr = 1, -+ .field1 = 0, -+ .field2 = 129848, -+ }, { -+ .id = N810BM_PMM_ADC_BKUPVOLT, -+ .flags = 0x01, -+ .adc_groupnr = 1, -+ .field1 = 0, -+ .field2 = 20000, -+ }, { -+ .id = N810BM_PMM_ADC_BATCURR, -+ .flags = 0x06, -+ .adc_groupnr = 1, -+ .field1 = 0, -+ .field2 = 9660, -+ }, -+ /* ADC group-nr 2 */ -+ { -+ .id = N810BM_PMM_ADC_BSI, -+ .flags = 0x02, -+ .adc_groupnr = 2, -+ .field1 = 1169, -+ .field2 = 0, -+ }, -+ /* ADC group-nr 3 */ -+ { -+ .id = N810BM_PMM_ADC_BATTEMP, -+ .flags = 0x03, -+ .adc_groupnr = 3, -+ .field1 = 265423000, -+ .field2 = 298, -+ }, -+ /* ADC group-nr 4 */ -+ { -+ .id = N810BM_PMM_ADC_LIGHTTEMP, -+ .flags = 0x04, -+ .adc_groupnr = 4, -+ .field1 = 19533778, -+ .field2 = 308019670, -+ .field3 = 4700, -+ .field4 = 2500, -+ }, -+ }; -+ -+ /* Clear the array */ -+ memset(&bm->calib.adc, 0, sizeof(bm->calib.adc)); -+ for (i = 0; i < ARRAY_SIZE(bm->calib.adc); i++) -+ bm->calib.adc[i].flags = 0xFF; -+ -+ /* Copy the defaults */ -+ for (i = 0; i < ARRAY_SIZE(defaults); i++) { -+ adc_calib = n810bm_get_adc_calib(bm, defaults[i].id); -+ if (WARN_ON(!adc_calib)) -+ continue; -+ *adc_calib = defaults[i]; -+ } -+} -+ -+static int n810bm_parse_pmm_block(struct n810bm *bm, -+ const struct firmware *pmm_block) -+{ -+ u8 byte; -+ int err; -+ unsigned int i, count; -+ struct n810bm_adc_calib *adc_calib; -+ -+ /* Initialize to defaults */ -+ n810bm_adc_calib_set_defaults(bm); -+ -+ /* Parse the PMM data */ -+ err = pmm_record_get(bm, pmm_block, &byte, sizeof(byte), -+ 1, 0, 0); /* group 1 / element 0 */ -+ err |= (byte != 0x01); -+ err |= pmm_record_get(bm, pmm_block, &byte, sizeof(byte), -+ 1, 1, 0); /* group 1 / element 1 */ -+ err |= (byte != 0x01); -+ if (err) -+ err = n810bm_parse_pmm_group2(bm, pmm_block); -+ else -+ err = n810bm_parse_pmm_group1(bm, pmm_block); -+ if (err) -+ return err; -+ -+ /* Sanity checks */ -+ for (i = 0, count = 0; i < ARRAY_SIZE(bm->calib.adc); i++) { -+ adc_calib = &bm->calib.adc[i]; -+ if (adc_calib->flags == 0xFF) -+ continue; -+ switch (adc_calib->id) { -+ case N810BM_PMM_ADC_BATVOLT: -+ if (adc_calib->field1 < 2400 || -+ adc_calib->field1 > 2700) -+ goto value_check_fail; -+ if (adc_calib->field2 < 20000 || -+ adc_calib->field2 > 23000) -+ goto value_check_fail; -+ count++; -+ break; -+ case N810BM_PMM_ADC_BSI: -+ if (adc_calib->field1 < 1100 || -+ adc_calib->field1 > 1300) -+ goto value_check_fail; -+ count++; -+ break; -+ case N810BM_PMM_ADC_BATCURR: -+ if (adc_calib->field2 < 7000 || -+ adc_calib->field2 > 12000) -+ goto value_check_fail; -+ count++; -+ break; -+ case N810BM_PMM_ADC_0xFE: -+ if ((s32)adc_calib->field1 > 14 || -+ (s32)adc_calib->field1 < -14) -+ goto value_check_fail; -+ if (adc_calib->field2 < 13000 || -+ adc_calib->field2 > 13350) -+ goto value_check_fail; -+ count++; -+ break; -+ case N810BM_PMM_ADC_CHGVOLT: -+ case N810BM_PMM_ADC_BATTEMP: -+ case N810BM_PMM_ADC_BKUPVOLT: -+ count++; -+ break; -+ case N810BM_PMM_ADC_GND2: -+ case N810BM_PMM_ADC_HOOKDET: -+ case N810BM_PMM_ADC_LIGHTSENS: -+ case N810BM_PMM_ADC_HEADSET: -+ case N810BM_PMM_ADC_LIGHTTEMP: -+ case N810BM_PMM_ADC_RFGP: -+ case N810BM_PMM_ADC_WBTX: -+ case N810BM_PMM_ADC_RETUTEMP: -+ break; -+ } -+ dev_dbg(&bm->pdev->dev, -+ "ADC 0x%02X calib: 0x%02X 0x%02X 0x%08X 0x%08X 0x%04X 0x%04X", -+ adc_calib->id, adc_calib->flags, adc_calib->adc_groupnr, -+ adc_calib->field1, adc_calib->field2, -+ adc_calib->field3, adc_calib->field4); -+ } -+ if (count != 7) { -+ dev_err(&bm->pdev->dev, "PMM sanity check: Did not find " -+ "all required values (count=%u)", count); -+ goto check_fail; -+ } -+ -+ return 0; -+ -+value_check_fail: -+ dev_err(&bm->pdev->dev, "PMM image sanity check failed " -+ "(id=%02X, field1=%08X, field2=%08X)", -+ adc_calib->id, adc_calib->field1, adc_calib->field2); -+check_fail: -+ return -EILSEQ; -+} -+ -+/* Set the current measure timer that triggers on Tahvo IRQ 7 -+ * An interval of zero disables the timer. */ -+static void n810bm_set_current_measure_timer(struct n810bm *bm, -+ u16 millisec_interval) -+{ -+ u16 value = millisec_interval; -+ -+ if (value <= 0xF905) { -+ value = ((u64)0x10624DD3 * (u64)(value + 0xF9)) >> 32; -+ value /= 16; -+ } else -+ value = 0xFF; -+ -+ tahvo_write(bm, TAHVO_REG_BATCURRTIMER, value & 0xFF); -+ -+ tahvo_set(bm, TAHVO_REG_CHGCTL, -+ TAHVO_REG_CHGCTL_CURTIMRST); -+ tahvo_clear(bm, TAHVO_REG_CHGCTL, -+ TAHVO_REG_CHGCTL_CURTIMRST); -+ -+ if (millisec_interval) -+ tahvo_enable_irq(TAHVO_INT_BATCURR); -+ else -+ tahvo_disable_irq(TAHVO_INT_BATCURR); -+ -+ //TODO also do a software timer for safety. -+} -+ -+static void n810bm_enable_current_measure(struct n810bm *bm) -+{ -+ WARN_ON(bm->current_measure_enabled < 0); -+ if (!bm->current_measure_enabled) { -+ /* Enable the current measurement circuitry */ -+ tahvo_set(bm, TAHVO_REG_CHGCTL, -+ TAHVO_REG_CHGCTL_CURMEAS); -+ dev_dbg(&bm->pdev->dev, -+ "Current measurement circuitry enabled"); -+ } -+ bm->current_measure_enabled++; -+} -+ -+static void n810bm_disable_current_measure(struct n810bm *bm) -+{ -+ bm->current_measure_enabled--; -+ WARN_ON(bm->current_measure_enabled < 0); -+ if (!bm->current_measure_enabled) { -+ /* Disable the current measurement circuitry */ -+ tahvo_clear(bm, TAHVO_REG_CHGCTL, -+ TAHVO_REG_CHGCTL_CURMEAS); -+ dev_dbg(&bm->pdev->dev, -+ "Current measurement circuitry disabled"); -+ } -+} -+ -+/* Measure the actual battery current. Returns a signed value in mA. -+ * Does only work, if current measurement was enabled. */ -+static int n810bm_measure_batt_current(struct n810bm *bm) -+{ -+ u16 retval; -+ int adc = 0, ma, i; -+ -+ if (WARN_ON(bm->current_measure_enabled <= 0)) -+ return 0; -+ for (i = 0; i < 3; i++) { -+ retval = tahvo_read(bm, TAHVO_REG_BATCURR); -+ adc += (s16)retval; /* Value is signed */ -+ } -+ adc /= 3; -+ -+ //TODO convert to mA -+ ma = adc; -+ -+ return ma; -+} -+ -+/* Requires bm->mutex locked */ -+static int n810bm_measure_batt_current_async(struct n810bm *bm) -+{ -+ int ma; -+ bool charging = lipocharge_is_charging(&bm->charger); -+ -+ n810bm_enable_current_measure(bm); -+ if (!charging) -+ WARN_ON(bm->active_current_pwm != 0); -+ tahvo_maskset(bm, TAHVO_REG_CHGCTL, -+ TAHVO_REG_CHGCTL_EN | -+ TAHVO_REG_CHGCTL_PWMOVR | -+ TAHVO_REG_CHGCTL_PWMOVRZERO, -+ TAHVO_REG_CHGCTL_EN | -+ TAHVO_REG_CHGCTL_PWMOVR | -+ (charging ? 0 : TAHVO_REG_CHGCTL_PWMOVRZERO)); -+ ma = n810bm_measure_batt_current(bm); -+ tahvo_maskset(bm, TAHVO_REG_CHGCTL, -+ TAHVO_REG_CHGCTL_EN | -+ TAHVO_REG_CHGCTL_PWMOVR | -+ TAHVO_REG_CHGCTL_PWMOVRZERO, -+ (charging ? TAHVO_REG_CHGCTL_EN : 0)); -+ n810bm_disable_current_measure(bm); -+ -+ return ma; -+} -+ -+static int adc_sanity_check(struct n810bm *bm, unsigned int channel) -+{ -+ int value; -+ -+ value = retu_read_adc(&n810bm_retu_device->dev, channel); -+ if (value < 0) { -+ dev_err(&bm->pdev->dev, "Failed to read GND ADC channel %u", -+ channel); -+ return -EIO; -+ } -+ dev_dbg(&bm->pdev->dev, -+ "GND ADC channel %u sanity check got value: %d", -+ channel, value); -+ if (value > 5) { -+ n810bm_emergency(bm, "GND ADC sanity check failed"); -+ return -EIO; -+ } -+ -+ return 0; -+} -+ -+static int n810bm_check_adc_sanity(struct n810bm *bm) -+{ -+ int err; -+ -+ /* Discard one conversion */ -+ retu_write(bm, RETU_REG_ADCSCR, 0); -+ retu_read_adc(&n810bm_retu_device->dev, RETU_ADC_GND2); -+ -+ err = adc_sanity_check(bm, RETU_ADC_GND2); -+ if (err) -+ return err; -+ -+ return 0; -+} -+ -+/* 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; -+ -+ //TODO compensate for power consumption -+ //TODO honor calibration values -+ -+ return mv; -+} -+ -+/* Measure the charger voltage. Returns the value in mV (or negative value on error). */ -+static int n810bm_measure_charger_voltage(struct n810bm *bm) -+{ -+ int adc; -+ unsigned int mv; -+ -+ adc = retu_adc_average(bm, RETU_ADC_CHGVOLT, 5); -+ if (adc < 0) -+ return adc; -+ //TODO convert to mV -+ mv = adc; -+ -+ return mv; -+} -+ -+/* Measure backup battery voltage. Returns the value in mV (or negative value on error). */ -+static int n810bm_measure_backup_batt_voltage(struct n810bm *bm) -+{ -+ int adc; -+ unsigned int mv; -+ -+ adc = retu_adc_average(bm, RETU_ADC_BKUPVOLT, 3); -+ if (adc < 0) -+ return adc; -+ //TODO convert to mV -+ mv = adc; -+ -+ return mv; -+} -+ -+/* Measure the battery temperature. Returns the value in K (or negative value on error). */ -+static int n810bm_measure_batt_temp(struct n810bm *bm) -+{ -+ int adc; -+ unsigned int k; -+ -+ adc = retu_adc_average(bm, RETU_ADC_BATTEMP, 3); -+ if (adc < 0) -+ return adc; -+ //TODO convert to K -+ k = adc; -+ -+ return k; -+} -+ -+/* 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_start_charge(struct n810bm *bm) -+{ -+ int err; -+ -+ WARN_ON(!bm->battery_present); -+ WARN_ON(!bm->charger_present); -+ -+ /* Set PWM to zero */ -+ bm->active_current_pwm = 0; -+ tahvo_write(bm, TAHVO_REG_CHGCURR, bm->active_current_pwm); -+ -+ /* Charge global enable */ -+ tahvo_maskset(bm, TAHVO_REG_CHGCTL, -+ TAHVO_REG_CHGCTL_EN | -+ TAHVO_REG_CHGCTL_PWMOVR | -+ TAHVO_REG_CHGCTL_PWMOVRZERO, -+ TAHVO_REG_CHGCTL_EN); -+ -+ WARN_ON((int)bm->capacity <= 0); -+ bm->charger.capacity = bm->capacity; -+ err = lipocharge_start(&bm->charger); -+ WARN_ON(err); -+ -+ /* Initialize current measurement circuitry */ -+ n810bm_enable_current_measure(bm); -+ n810bm_set_current_measure_timer(bm, 250); -+ -+ dev_info(&bm->pdev->dev, "Charging battery"); -+ n810bm_notify_charger_state(bm); -+ n810bm_notify_charger_pwm(bm); -+} -+ -+static void n810bm_stop_charge(struct n810bm *bm) -+{ -+ if (lipocharge_is_charging(&bm->charger)) { -+ n810bm_set_current_measure_timer(bm, 0); -+ n810bm_disable_current_measure(bm); -+ } -+ lipocharge_stop(&bm->charger); -+ -+ /* Set PWM to zero */ -+ bm->active_current_pwm = 0; -+ tahvo_write(bm, TAHVO_REG_CHGCURR, bm->active_current_pwm); -+ -+ /* Charge global disable */ -+ tahvo_maskset(bm, TAHVO_REG_CHGCTL, -+ TAHVO_REG_CHGCTL_EN | -+ TAHVO_REG_CHGCTL_PWMOVR | -+ TAHVO_REG_CHGCTL_PWMOVRZERO, -+ 0); -+ -+ dev_info(&bm->pdev->dev, "Not charging battery"); -+ n810bm_notify_charger_state(bm); -+ n810bm_notify_charger_pwm(bm); -+} -+ -+/* Periodic check */ -+static void n810bm_periodic_check_work(struct work_struct *work) -+{ -+ struct n810bm *bm = container_of(to_delayed_work(work), -+ struct n810bm, periodic_check_work); -+ u16 status; -+ bool battery_was_present, charger_was_present; -+ int mv; -+ -+ mutex_lock(&bm->mutex); -+ -+ status = retu_read(bm, RETU_REG_STATUS); -+ battery_was_present = bm->battery_present; -+ charger_was_present = bm->charger_present; -+ bm->battery_present = !!(status & RETU_REG_STATUS_BATAVAIL); -+ bm->charger_present = !!(status & RETU_REG_STATUS_CHGPLUG); -+ -+ if (bm->battery_present != battery_was_present) { -+ /* Battery state changed */ -+ if (bm->battery_present) { -+ bm->capacity = n810bm_read_batt_capacity(bm); -+ if (bm->capacity == N810BM_CAP_UNKNOWN) { -+ dev_err(&bm->pdev->dev, "Unknown battery detected"); -+ } else { -+ dev_info(&bm->pdev->dev, "Detected %u mAh battery", -+ (unsigned int)bm->capacity); -+ } -+ } else { -+ bm->capacity = N810BM_CAP_NONE; -+ dev_info(&bm->pdev->dev, "The main battery was removed"); -+ //TODO disable charging -+ } -+ } -+ -+ if (bm->charger_present != charger_was_present) { -+ /* Charger state changed */ -+ dev_info(&bm->pdev->dev, "The charger was %s", -+ bm->charger_present ? "plugged in" : "removed"); -+ n810bm_notify_charger_present(bm); -+ } -+ -+ if ((bm->battery_present && !bm->charger_present) || -+ !n810bm_known_battery_present(bm)){ -+ /* We're draining the battery */ -+ mv = n810bm_measure_batt_voltage(bm); -+ if (mv < 0) { -+ n810bm_emergency(bm, -+ "check: Failed to measure voltage"); -+ } -+ if (mv < N810BM_MIN_VOLTAGE_THRES) { -+ n810bm_emergency(bm, -+ "check: Minimum voltage threshold reached"); -+ } -+ } -+ -+ if (bm->charger_present && n810bm_known_battery_present(bm)) { -+ /* Known battery and charger are connected */ -+ if (bm->charger_enabled) { -+ /* Charger is enabled */ -+ if (!lipocharge_is_charging(&bm->charger)) { -+ //TODO start charging, if battery is below some threshold -+ n810bm_start_charge(bm); -+ } -+ } -+ } -+ -+ if (lipocharge_is_charging(&bm->charger) && !bm->charger_present) { -+ /* Charger was unplugged. */ -+ n810bm_stop_charge(bm); -+ } -+ -+ mutex_unlock(&bm->mutex); -+ schedule_delayed_work(&bm->periodic_check_work, -+ round_jiffies_relative(N810BM_CHECK_INTERVAL)); -+} -+ -+/*XXX -+static void n810bm_adc_irq_handler(unsigned long data) -+{ -+ struct n810bm *bm = (struct n810bm *)data; -+ -+ retu_ack_irq(RETU_INT_ADCS); -+ //TODO -+dev_info(&bm->pdev->dev, "ADC interrupt triggered\n"); -+} -+*/ -+ -+static void n810bm_tahvo_current_measure_work(struct work_struct *work) -+{ -+ struct n810bm *bm = container_of(work, struct n810bm, currmeas_irq_work); -+ int res, ma, mv, temp; -+ -+ mutex_lock(&bm->mutex); -+ if (!lipocharge_is_charging(&bm->charger)) -+ goto out_unlock; -+ -+ tahvo_maskset(bm, TAHVO_REG_CHGCTL, -+ TAHVO_REG_CHGCTL_PWMOVR | -+ TAHVO_REG_CHGCTL_PWMOVRZERO, -+ TAHVO_REG_CHGCTL_PWMOVR); -+ ma = n810bm_measure_batt_current(bm); -+ tahvo_maskset(bm, TAHVO_REG_CHGCTL, -+ TAHVO_REG_CHGCTL_PWMOVR | -+ TAHVO_REG_CHGCTL_PWMOVRZERO, -+ TAHVO_REG_CHGCTL_PWMOVR | -+ TAHVO_REG_CHGCTL_PWMOVRZERO); -+ msleep(10); -+ mv = n810bm_measure_batt_voltage(bm); -+ tahvo_maskset(bm, TAHVO_REG_CHGCTL, -+ TAHVO_REG_CHGCTL_PWMOVR | -+ TAHVO_REG_CHGCTL_PWMOVRZERO, -+ 0); -+ temp = n810bm_measure_batt_temp(bm); -+ if (WARN_ON(mv < 0)) -+ goto out_unlock; -+ if (WARN_ON(temp < 0)) -+ goto out_unlock; -+ -+ if (bm->verbose_charge_log) { -+ dev_info(&bm->pdev->dev, -+ "Battery charge state: %d mV, %d mA (%s)", -+ mv, ma, -+ (ma <= 0) ? "discharging" : "charging"); -+ } -+ res = lipocharge_update_state(&bm->charger, mv, ma, temp); -+ if (res) { -+ if (res > 0) -+ dev_info(&bm->pdev->dev, "Battery fully charged"); -+ n810bm_stop_charge(bm); -+ } -+out_unlock: -+ mutex_unlock(&bm->mutex); -+} -+ -+static void n810bm_tahvo_current_measure_irq_handler(unsigned long data) -+{ -+ struct n810bm *bm = (struct n810bm *)data; -+ -+ tahvo_ack_irq(TAHVO_INT_BATCURR); -+ schedule_work(&bm->currmeas_irq_work); -+} -+ -+#define DEFINE_ATTR_NOTIFY(attr_name) \ -+ void n810bm_notify_##attr_name(struct n810bm *bm) \ -+ { \ -+ set_bit(N810BM_NOTIFY_##attr_name, &bm->notify_flags); \ -+ wmb(); \ -+ schedule_work(&bm->notify_work); \ -+ } -+ -+#define DEFINE_SHOW_INT_FUNC(name, member) \ -+ static ssize_t n810bm_attr_##name##_show(struct device *dev, \ -+ struct device_attribute *attr, \ -+ char *buf) \ -+ { \ -+ struct n810bm *bm = device_to_n810bm(dev); \ -+ ssize_t count; \ -+ \ -+ mutex_lock(&bm->mutex); \ -+ count = snprintf(buf, PAGE_SIZE, "%d\n", (int)(bm->member)); \ -+ mutex_unlock(&bm->mutex); \ -+ \ -+ return count; \ -+ } -+ -+#define DEFINE_STORE_INT_FUNC(name, member) \ -+ static ssize_t n810bm_attr_##name##_store(struct device *dev, \ -+ struct device_attribute *attr,\ -+ const char *buf, size_t count)\ -+ { \ -+ struct n810bm *bm = device_to_n810bm(dev); \ -+ long val; \ -+ int err; \ -+ \ -+ mutex_lock(&bm->mutex); \ -+ err = strict_strtol(buf, 0, &val); \ -+ if (!err) \ -+ bm->member = (typeof(bm->member))val; \ -+ mutex_unlock(&bm->mutex); \ -+ \ -+ return err ? err : count; \ -+ } -+ -+#define DEFINE_ATTR_SHOW_INT(name, member) \ -+ DEFINE_SHOW_INT_FUNC(name, member) \ -+ static DEVICE_ATTR(name, S_IRUGO, \ -+ n810bm_attr_##name##_show, NULL); -+ -+#define DEFINE_ATTR_SHOW_STORE_INT(name, member) \ -+ DEFINE_SHOW_INT_FUNC(name, member) \ -+ DEFINE_STORE_INT_FUNC(name, member) \ -+ static DEVICE_ATTR(name, S_IRUGO | S_IWUSR, \ -+ n810bm_attr_##name##_show, \ -+ n810bm_attr_##name##_store); -+ -+DEFINE_ATTR_SHOW_INT(battery_present, battery_present); -+DEFINE_ATTR_SHOW_INT(charger_present, charger_present); -+static DEFINE_ATTR_NOTIFY(charger_present); -+DEFINE_ATTR_SHOW_INT(charger_state, charger.state); -+static DEFINE_ATTR_NOTIFY(charger_state); -+DEFINE_ATTR_SHOW_INT(charger_pwm, active_current_pwm); -+static DEFINE_ATTR_NOTIFY(charger_pwm); -+DEFINE_ATTR_SHOW_STORE_INT(charger_enable, charger_enabled); -+DEFINE_ATTR_SHOW_STORE_INT(charger_verbose, verbose_charge_log); -+ -+static ssize_t n810bm_attr_battery_level_show(struct device *dev, -+ struct device_attribute *attr, -+ char *buf) -+{ -+ struct n810bm *bm = device_to_n810bm(dev); -+ ssize_t count = -ENODEV; -+ int millivolt; -+ -+ mutex_lock(&bm->mutex); -+ if (!bm->battery_present || lipocharge_is_charging(&bm->charger)) -+ millivolt = 0; -+ else -+ millivolt = n810bm_measure_batt_voltage(bm); -+ if (millivolt >= 0) { -+ count = snprintf(buf, PAGE_SIZE, "%u\n", -+ n810bm_mvolt2percent(millivolt)); -+ } -+ mutex_unlock(&bm->mutex); -+ -+ return count; -+} -+static DEVICE_ATTR(battery_level, S_IRUGO, -+ n810bm_attr_battery_level_show, NULL); -+ -+static ssize_t n810bm_attr_battery_capacity_show(struct device *dev, -+ struct device_attribute *attr, -+ char *buf) -+{ -+ struct n810bm *bm = device_to_n810bm(dev); -+ ssize_t count; -+ int capacity = 0; -+ -+ mutex_lock(&bm->mutex); -+ if (n810bm_known_battery_present(bm)) -+ capacity = (int)bm->capacity; -+ count = snprintf(buf, PAGE_SIZE, "%d\n", capacity); -+ mutex_unlock(&bm->mutex); -+ -+ return count; -+} -+static DEVICE_ATTR(battery_capacity, S_IRUGO, -+ n810bm_attr_battery_capacity_show, NULL); -+ -+static ssize_t n810bm_attr_battery_temp_show(struct device *dev, -+ struct device_attribute *attr, -+ char *buf) -+{ -+ struct n810bm *bm = device_to_n810bm(dev); -+ ssize_t count = -ENODEV; -+ int k; -+ -+ mutex_lock(&bm->mutex); -+ k = n810bm_measure_batt_temp(bm); -+ if (k >= 0) -+ count = snprintf(buf, PAGE_SIZE, "%d\n", k); -+ mutex_unlock(&bm->mutex); -+ -+ return count; -+} -+static DEVICE_ATTR(battery_temp, S_IRUGO, -+ n810bm_attr_battery_temp_show, NULL); -+ -+static ssize_t n810bm_attr_charger_voltage_show(struct device *dev, -+ struct device_attribute *attr, -+ char *buf) -+{ -+ struct n810bm *bm = device_to_n810bm(dev); -+ ssize_t count = -ENODEV; -+ int mv = 0; -+ -+ mutex_lock(&bm->mutex); -+ if (bm->charger_present) -+ mv = n810bm_measure_charger_voltage(bm); -+ if (mv >= 0) -+ count = snprintf(buf, PAGE_SIZE, "%d\n", mv); -+ mutex_unlock(&bm->mutex); -+ -+ return count; -+} -+static DEVICE_ATTR(charger_voltage, S_IRUGO, -+ n810bm_attr_charger_voltage_show, NULL); -+ -+static ssize_t n810bm_attr_backup_battery_voltage_show(struct device *dev, -+ struct device_attribute *attr, -+ char *buf) -+{ -+ struct n810bm *bm = device_to_n810bm(dev); -+ ssize_t count = -ENODEV; -+ int mv; -+ -+ mutex_lock(&bm->mutex); -+ mv = n810bm_measure_backup_batt_voltage(bm); -+ if (mv >= 0) -+ count = snprintf(buf, PAGE_SIZE, "%d\n", mv); -+ mutex_unlock(&bm->mutex); -+ -+ return count; -+} -+static DEVICE_ATTR(backup_battery_voltage, S_IRUGO, -+ n810bm_attr_backup_battery_voltage_show, NULL); -+ -+static ssize_t n810bm_attr_battery_current_show(struct device *dev, -+ struct device_attribute *attr, -+ char *buf) -+{ -+ struct n810bm *bm = device_to_n810bm(dev); -+ ssize_t count = -ENODEV; -+ int ma = 0; -+ -+ mutex_lock(&bm->mutex); -+ if (bm->battery_present) -+ ma = n810bm_measure_batt_current_async(bm); -+ count = snprintf(buf, PAGE_SIZE, "%d\n", ma); -+ mutex_unlock(&bm->mutex); -+ -+ return count; -+} -+static DEVICE_ATTR(battery_current, S_IRUGO, -+ n810bm_attr_battery_current_show, NULL); -+ -+static const struct device_attribute *n810bm_attrs[] = { -+ &dev_attr_battery_present, -+ &dev_attr_battery_level, -+ &dev_attr_battery_current, -+ &dev_attr_battery_capacity, -+ &dev_attr_battery_temp, -+ &dev_attr_backup_battery_voltage, -+ &dev_attr_charger_present, -+ &dev_attr_charger_state, -+ &dev_attr_charger_verbose, -+ &dev_attr_charger_voltage, -+ &dev_attr_charger_enable, -+ &dev_attr_charger_pwm, -+}; -+ -+static void n810bm_notify_work(struct work_struct *work) -+{ -+ struct n810bm *bm = container_of(work, struct n810bm, notify_work); -+ unsigned long notify_flags; -+ -+ notify_flags = xchg(&bm->notify_flags, 0); -+ mb(); -+ -+#define do_notify(attr_name) \ -+ do { \ -+ if (notify_flags & (1 << N810BM_NOTIFY_##attr_name)) { \ -+ sysfs_notify(&bm->pdev->dev.kobj, NULL, \ -+ dev_attr_##attr_name.attr.name); \ -+ } \ -+ } while (0) -+ -+ do_notify(charger_present); -+ do_notify(charger_state); -+ do_notify(charger_pwm); -+} -+ -+static int n810bm_charger_set_current_pwm(struct lipocharge *c, -+ unsigned int duty_cycle) -+{ -+ struct n810bm *bm = container_of(c, struct n810bm, charger); -+ int err = -EINVAL; -+ -+ WARN_ON(!mutex_is_locked(&bm->mutex)); -+ if (WARN_ON(duty_cycle > 0xFF)) -+ goto out; -+ if (WARN_ON(!bm->charger_enabled)) -+ goto out; -+ if (WARN_ON(!bm->battery_present || !bm->charger_present)) -+ goto out; -+ -+ if (duty_cycle != bm->active_current_pwm) { -+ bm->active_current_pwm = duty_cycle; -+ tahvo_write(bm, TAHVO_REG_CHGCURR, duty_cycle); -+ n810bm_notify_charger_pwm(bm); -+ } -+ -+ err = 0; -+out: -+ -+ return err; -+} -+ -+static void n810bm_charger_emergency(struct lipocharge *c) -+{ -+ struct n810bm *bm = container_of(c, struct n810bm, charger); -+ -+ n810bm_emergency(bm, "Battery charger fault"); -+} -+ -+static void n810bm_hw_exit(struct n810bm *bm) -+{ -+ n810bm_stop_charge(bm); -+ retu_write(bm, RETU_REG_ADCSCR, 0); -+} -+ -+static int n810bm_hw_init(struct n810bm *bm) -+{ -+ int err; -+ -+ err = n810bm_check_adc_sanity(bm); -+ if (err) -+ return err; -+ -+ n810bm_stop_charge(bm); -+ -+ return 0; -+} -+ -+static void n810bm_cancel_and_flush_work(struct n810bm *bm) -+{ -+ cancel_delayed_work_sync(&bm->periodic_check_work); -+ cancel_work_sync(&bm->notify_work); -+ cancel_work_sync(&bm->currmeas_irq_work); -+ flush_scheduled_work(); -+} -+ -+static int n810bm_device_init(struct n810bm *bm) -+{ -+ int attr_index; -+ int err; -+ -+ bm->charger.rate = LIPORATE_p6C; -+ bm->charger.top_voltage = 4100; -+ bm->charger.duty_cycle_max = 0xFF; -+ bm->charger.set_current_pwm = n810bm_charger_set_current_pwm; -+ bm->charger.emergency = n810bm_charger_emergency; -+ lipocharge_init(&bm->charger, &bm->pdev->dev); -+ -+ err = n810bm_hw_init(bm); -+ if (err) -+ goto error; -+ for (attr_index = 0; attr_index < ARRAY_SIZE(n810bm_attrs); attr_index++) { -+ err = device_create_file(&bm->pdev->dev, n810bm_attrs[attr_index]); -+ if (err) -+ goto err_unwind_attrs; -+ } -+/*XXX -+ err = retu_request_irq(RETU_INT_ADCS, -+ n810bm_adc_irq_handler, -+ (unsigned long)bm, "n810bm"); -+ if (err) -+ goto err_unwind_attrs; -+*/ -+ err = tahvo_request_irq(TAHVO_INT_BATCURR, -+ n810bm_tahvo_current_measure_irq_handler, -+ (unsigned long)bm, "n810bm"); -+ if (err) -+ goto err_free_retu_irq; -+ tahvo_disable_irq(TAHVO_INT_BATCURR); -+ -+ schedule_delayed_work(&bm->periodic_check_work, -+ round_jiffies_relative(N810BM_CHECK_INTERVAL)); -+ -+ bm->initialized = 1; -+ dev_info(&bm->pdev->dev, "Battery management initialized"); -+ -+ return 0; -+ -+err_free_retu_irq: -+//XXX retu_free_irq(RETU_INT_ADCS); -+err_unwind_attrs: -+ for (attr_index--; attr_index >= 0; attr_index--) -+ device_remove_file(&bm->pdev->dev, n810bm_attrs[attr_index]); -+/*err_exit:*/ -+ n810bm_hw_exit(bm); -+error: -+ n810bm_cancel_and_flush_work(bm); -+ -+ return err; -+} -+ -+static void n810bm_device_exit(struct n810bm *bm) -+{ -+ int i; -+ -+ if (!bm->initialized) -+ return; -+ -+ lipocharge_exit(&bm->charger); -+ tahvo_free_irq(TAHVO_INT_BATCURR); -+//XXX retu_free_irq(RETU_INT_ADCS); -+ for (i = 0; i < ARRAY_SIZE(n810bm_attrs); i++) -+ device_remove_file(&bm->pdev->dev, n810bm_attrs[i]); -+ -+ n810bm_cancel_and_flush_work(bm); -+ -+ n810bm_hw_exit(bm); -+ -+ bm->initialized = 0; -+} -+ -+static void n810bm_pmm_block_found(const struct firmware *fw, void *context) -+{ -+ struct n810bm *bm = context; -+ int err; -+ -+ if (!fw) { -+ dev_err(&bm->pdev->dev, -+ "CAL PMM block image file not found"); -+ goto err_release; -+ } -+ if (fw->size != N810BM_PMM_BLOCK_SIZE || -+ memcmp(fw->data, "BME-PMM-BLOCK01", 15) != 0) { -+ dev_err(&bm->pdev->dev, -+ "CAL PMM block image file has an invalid format"); -+ goto err_release; -+ } -+ -+ err = n810bm_parse_pmm_block(bm, fw); -+ if (err) -+ goto err_release; -+ release_firmware(fw); -+ -+ err = n810bm_device_init(bm); -+ if (err) { -+ dev_err(&bm->pdev->dev, -+ "Failed to initialized battery management (%d)", err); -+ goto error; -+ } -+ -+ return; -+err_release: -+ release_firmware(fw); -+error: -+ return; -+} -+ -+static int __devinit n810bm_probe(void) -+{ -+ struct n810bm *bm; -+ int err; -+ -+ if (!n810bm_retu_device || !n810bm_tahvo_device) -+ return 0; -+ -+ bm = kzalloc(sizeof(*bm), GFP_KERNEL); -+ if (!bm) -+ return -ENOMEM; -+ bm->pdev = n810bm_retu_device; -+ platform_set_drvdata(n810bm_retu_device, bm); -+ platform_set_drvdata(n810bm_tahvo_device, bm); -+ mutex_init(&bm->mutex); -+ INIT_DELAYED_WORK(&bm->periodic_check_work, n810bm_periodic_check_work); -+ INIT_WORK(&bm->notify_work, n810bm_notify_work); -+ INIT_WORK(&bm->currmeas_irq_work, n810bm_tahvo_current_measure_work); -+ -+ dev_info(&bm->pdev->dev, "Requesting CAL BME PMM block firmware file " -+ N810BM_PMM_BLOCK_FILENAME); -+ err = request_firmware_nowait(THIS_MODULE, 1, -+ N810BM_PMM_BLOCK_FILENAME, -+ &bm->pdev->dev, GFP_KERNEL, -+ bm, n810bm_pmm_block_found); -+ if (err) { -+ dev_err(&bm->pdev->dev, -+ "Failed to request CAL PMM block image file (%d)", err); -+ goto err_free; -+ } -+ -+ return 0; -+ -+err_free: -+ kfree(bm); -+ -+ return err; -+} -+ -+static void __devexit n810bm_remove(void) -+{ -+ struct n810bm *bm; -+ -+ if (!n810bm_retu_device || !n810bm_tahvo_device) -+ return; -+ bm = platform_get_drvdata(n810bm_retu_device); -+ -+ n810bm_device_exit(bm); -+ -+ kfree(bm); -+ platform_set_drvdata(n810bm_retu_device, NULL); -+ platform_set_drvdata(n810bm_tahvo_device, NULL); -+} -+ -+static int __devinit n810bm_retu_probe(struct platform_device *pdev) -+{ -+ n810bm_retu_device = pdev; -+ return n810bm_probe(); -+} -+ -+static int __devexit n810bm_retu_remove(struct platform_device *pdev) -+{ -+ n810bm_remove(); -+ n810bm_retu_device = NULL; -+ return 0; -+} -+ -+static int __devinit n810bm_tahvo_probe(struct platform_device *pdev) -+{ -+ n810bm_tahvo_device = pdev; -+ return n810bm_probe(); -+} -+ -+static int __devexit n810bm_tahvo_remove(struct platform_device *pdev) -+{ -+ n810bm_remove(); -+ n810bm_tahvo_device = NULL; -+ return 0; -+} -+ -+static struct platform_driver n810bm_retu_driver = { -+ .remove = __devexit_p(n810bm_retu_remove), -+ .driver = { -+ .name = "retu-n810bm", -+ } -+}; -+ -+static struct platform_driver n810bm_tahvo_driver = { -+ .remove = __devexit_p(n810bm_tahvo_remove), -+ .driver = { -+ .name = "tahvo-n810bm", -+ } -+}; -+ -+/* FIXME: for now alloc the device here... */ -+static struct platform_device n810bm_tahvo_dev = { -+ .name = "tahvo-n810bm", -+ .id = -1, -+}; -+ -+static int __init n810bm_modinit(void) -+{ -+ int err; -+ -+ //FIXME -+ err = platform_device_register(&n810bm_tahvo_dev); -+ if (err) -+ return err; -+ -+ err = platform_driver_probe(&n810bm_retu_driver, n810bm_retu_probe); -+ if (err) -+ return err; -+ err = platform_driver_probe(&n810bm_tahvo_driver, n810bm_tahvo_probe); -+ if (err) { -+ platform_driver_unregister(&n810bm_retu_driver); -+ return err; -+ } -+ -+ return 0; -+} -+module_init(n810bm_modinit); -+ -+static void __exit n810bm_modexit(void) -+{ -+ //FIXME -+ platform_device_unregister(&n810bm_tahvo_dev); -+ -+ platform_driver_unregister(&n810bm_tahvo_driver); -+ platform_driver_unregister(&n810bm_retu_driver); -+} -+module_exit(n810bm_modexit); -+ -+MODULE_DESCRIPTION("Nokia n810 battery management"); -+MODULE_FIRMWARE(N810BM_PMM_BLOCK_FILENAME); -+MODULE_LICENSE("GPL"); -+MODULE_AUTHOR("Michael Buesch"); ---- /dev/null -+++ b/drivers/cbus/lipocharge.c -@@ -0,0 +1,183 @@ -+/* -+ * Generic LIPO battery charger -+ * -+ * Copyright (c) 2010-2011 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. -+ */ -+ -+#define DEBUG -+ -+#include "lipocharge.h" -+ -+#include <linux/slab.h> -+ -+ -+/* Hysteresis constants */ -+#define CURRENT_HYST 30 /* mA */ -+#define VOLTAGE_HYST 10 /* mV */ -+ -+/* Threshold constants */ -+#define FINISH_CURRENT_PERCENT 3 -+ -+ -+/* Returns the requested first-stage charge current in mA */ -+static inline unsigned int get_stage1_charge_current(struct lipocharge *c) -+{ -+ /* current = (capacity * C) */ -+ return c->capacity * c->rate / 1000; -+} -+ -+void lipocharge_init(struct lipocharge *c, struct device *dev) -+{ -+ c->dev = dev; -+ c->state = LIPO_IDLE; -+} -+ -+void lipocharge_exit(struct lipocharge *c) -+{ -+ c->state = LIPO_IDLE; -+} -+ -+int lipocharge_start(struct lipocharge *c) -+{ -+ int err; -+ -+ if (c->state != LIPO_IDLE) -+ return -EBUSY; -+ if (!c->set_current_pwm || !c->emergency) -+ return -EINVAL; -+ if (!c->top_voltage || c->top_voltage > 4200) -+ return -EINVAL; -+ -+ c->active_duty_cycle = 0; -+ err = c->set_current_pwm(c, c->active_duty_cycle); -+ if (err) -+ return err; -+ c->state = LIPO_FIRST_STAGE; -+ -+ return 0; -+} -+ -+void lipocharge_stop(struct lipocharge *c) -+{ -+ if (c->state == LIPO_IDLE) -+ return; -+ c->state = LIPO_IDLE; -+} -+ -+static int lipocharge_increase_current(struct lipocharge *c, -+ unsigned int inc_permille) -+{ -+ int old_pwm, new_pwm; -+ -+ if (c->active_duty_cycle >= c->duty_cycle_max) -+ return 0; -+ -+ old_pwm = c->active_duty_cycle; -+ new_pwm = old_pwm + (c->duty_cycle_max * inc_permille / 1000); -+ new_pwm = min(new_pwm, (int)c->duty_cycle_max); -+ c->active_duty_cycle = new_pwm; -+ -+ dev_dbg(c->dev, "lipo: Increasing duty_cycle by " -+ "%u permille (0x%02X -> 0x%02X)", -+ inc_permille, old_pwm, new_pwm); -+ -+ return c->set_current_pwm(c, c->active_duty_cycle); -+} -+ -+static int lipocharge_decrease_current(struct lipocharge *c, -+ unsigned int dec_permille) -+{ -+ int old_pwm, new_pwm; -+ -+ if (c->active_duty_cycle <= 0) -+ return 0; -+ -+ old_pwm = c->active_duty_cycle; -+ new_pwm = old_pwm - (c->duty_cycle_max * dec_permille / 1000); -+ new_pwm = max(0, new_pwm); -+ c->active_duty_cycle = new_pwm; -+ -+ dev_dbg(c->dev, "lipo: Decreasing duty_cycle by " -+ "%u permille (0x%02X -> 0x%02X)", -+ dec_permille, old_pwm, new_pwm); -+ -+ return c->set_current_pwm(c, c->active_duty_cycle); -+} -+ -+/** lipocharge_update_state - Update the charge state -+ * @c: The context. -+ * @voltage_mV: The measured battery voltage. -+ * @current_mA: The measured charge current. -+ * negative -> drain. -+ * positive -> charge. -+ * @temp_K: Battery temperature in K. -+ * -+ * Returns 0 on success, -1 on error. -+ * Returns 1, if the charging process is finished. -+ */ -+int lipocharge_update_state(struct lipocharge *c, -+ unsigned int voltage_mV, -+ int current_mA, -+ unsigned int temp_K) -+{ -+ int requested_current, current_diff; -+ int err; -+ unsigned int permille; -+ -+ //TODO temp -+ -+restart: -+ switch (c->state) { -+ case LIPO_IDLE: -+ dev_err(c->dev, "%s: called while idle", __func__); -+ return -EINVAL; -+ case LIPO_FIRST_STAGE: /* Constant current */ -+//printk("GOT %u %d %u\n", voltage_mV, current_mA, temp_K); -+ if (voltage_mV >= c->top_voltage) { -+ /* Float voltage reached. -+ * Switch charger mode to "constant current" */ -+ c->state = LIPO_SECOND_STAGE; -+ dev_dbg(c->dev, "Switched to second charging stage."); -+ goto restart; -+ } -+ /* Float voltage not reached, yet. -+ * Try to get the requested constant current. */ -+ requested_current = get_stage1_charge_current(c); -+ if (current_mA < 0) -+ current_mA = 0; -+ current_diff = requested_current - current_mA; -+ if (abs(requested_current - current_mA) > CURRENT_HYST) { -+ if (current_diff > 0) { -+ /* Increase current */ -+ permille = current_diff * 1000 / requested_current; -+ permille /= 2; -+ err = lipocharge_increase_current(c, permille); -+ if (err) -+ return err; -+ } else { -+ /* Decrease current */ -+ permille = (-current_diff) * 1000 / requested_current; -+ permille /= 2; -+ err = lipocharge_decrease_current(c, permille); -+ if (err) -+ return err; -+ } -+ } -+ break; -+ case LIPO_SECOND_STAGE: /* Constant voltage */ -+ //TODO -+ break; -+ } -+ -+ return 0; -+} ---- /dev/null -+++ b/drivers/cbus/lipocharge.h -@@ -0,0 +1,60 @@ -+#ifndef LIPOCHARGE_H_ -+#define LIPOCHARGE_H_ -+ -+#include <linux/types.h> -+#include <linux/device.h> -+ -+ -+#define LIPORATE(a,b) (((a) * 1000) + ((b) * 100)) -+#define LIPORATE_p6C LIPORATE(0,6) /* 0.6C */ -+ -+enum lipocharge_state { -+ LIPO_IDLE = 0, /* Not charging */ -+ LIPO_FIRST_STAGE, /* Charging: constant current */ -+ LIPO_SECOND_STAGE, /* Charging: constant voltage */ -+}; -+ -+/** struct lipocharge - A generic LIPO charger -+ * -+ * @capacity: Battery capacity in mAh. -+ * @rate: Charge rate. -+ * @top_voltage: Fully charged voltage, in mV. -+ * @duty_cycle_max: Max value for duty_cycle. -+ * -+ * @set_charge_current: Set the charge current PWM duty cycle. -+ * @emergency: Something went wrong. Force shutdown. -+ */ -+struct lipocharge { -+ unsigned int capacity; -+ unsigned int rate; -+ unsigned int top_voltage; -+ unsigned int duty_cycle_max; -+ -+ int (*set_current_pwm)(struct lipocharge *c, unsigned int duty_cycle); -+ void (*emergency)(struct lipocharge *c); -+ -+ /* internal */ -+ struct device *dev; -+ enum lipocharge_state state; -+ unsigned int active_duty_cycle; -+ -+ //TODO implement timer to cut power after maximum charge time. -+}; -+ -+void lipocharge_init(struct lipocharge *c, struct device *dev); -+void lipocharge_exit(struct lipocharge *c); -+ -+int lipocharge_start(struct lipocharge *c); -+void lipocharge_stop(struct lipocharge *c); -+ -+int lipocharge_update_state(struct lipocharge *c, -+ unsigned int voltage_mV, -+ int current_mA, -+ unsigned int temp_K); -+ -+static inline bool lipocharge_is_charging(struct lipocharge *c) -+{ -+ return (c->state != LIPO_IDLE); -+} -+ -+#endif /* LIPOCHARGE_H_ */ ---- a/drivers/cbus/cbus.c -+++ b/drivers/cbus/cbus.c -@@ -35,6 +35,7 @@ - #include <linux/platform_device.h> - - #include <plat/cbus.h> -+#include <linux/reboot.h> - - #include "cbus.h" - -@@ -323,6 +324,13 @@ static void __exit cbus_bus_exit(void) - } - module_exit(cbus_bus_exit); - -+void cbus_emergency(void) -+{ -+ machine_power_off(); -+ panic("cbus: Failed to halt machine in emergency state\n"); -+} -+EXPORT_SYMBOL(cbus_emergency); -+ - MODULE_DESCRIPTION("CBUS serial protocol"); - MODULE_LICENSE("GPL"); - MODULE_AUTHOR("Juha Yrjölä"); ---- a/drivers/cbus/cbus.h -+++ b/drivers/cbus/cbus.h -@@ -26,4 +26,6 @@ - extern int cbus_read_reg(unsigned dev, unsigned reg); - extern int cbus_write_reg(unsigned dev, unsigned reg, unsigned val); - -+NORET_TYPE void cbus_emergency(void) ATTRIB_NORET; -+ - #endif /* __DRIVERS_CBUS_CBUS_H */ ---- a/drivers/cbus/retu.c -+++ b/drivers/cbus/retu.c -@@ -425,6 +425,11 @@ static int retu_allocate_children(struct - if (!child) - return -ENOMEM; - -+ child = retu_allocate_child("retu-n810bm", parent, irq_base, -+ RETU_INT_ADCS, -1, 1); -+ if (!child) -+ return -ENOMEM; -+ - return 0; - } - ---- a/drivers/cbus/tahvo.c -+++ b/drivers/cbus/tahvo.c -@@ -54,6 +54,7 @@ static int tahvo_is_betty; - - static struct tasklet_struct tahvo_tasklet; - spinlock_t tahvo_lock = SPIN_LOCK_UNLOCKED; -+EXPORT_SYMBOL(tahvo_lock); - - struct tahvo_irq_handler_desc { - int (*func)(unsigned long); -@@ -115,6 +116,7 @@ void tahvo_set_clear_reg_bits(unsigned r - tahvo_write_reg(reg, w); - spin_unlock_irqrestore(&tahvo_lock, flags); - } -+EXPORT_SYMBOL(tahvo_set_clear_reg_bits); - - /* - * Disable given TAHVO interrupt |