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-rw-r--r--target/linux/omap24xx/patches-2.6.37/900-n810-battery-management.patch243
1 files changed, 211 insertions, 32 deletions
diff --git a/target/linux/omap24xx/patches-2.6.37/900-n810-battery-management.patch b/target/linux/omap24xx/patches-2.6.37/900-n810-battery-management.patch
index ea33bfdb5e..3f6262a357 100644
--- a/target/linux/omap24xx/patches-2.6.37/900-n810-battery-management.patch
+++ b/target/linux/omap24xx/patches-2.6.37/900-n810-battery-management.patch
@@ -12,9 +12,9 @@
Index: linux-2.6.37/drivers/cbus/Kconfig
===================================================================
---- linux-2.6.37.orig/drivers/cbus/Kconfig 2011-01-28 18:14:27.901372343 +0100
-+++ linux-2.6.37/drivers/cbus/Kconfig 2011-01-28 18:14:27.952363634 +0100
-@@ -94,4 +94,16 @@
+--- linux-2.6.37.orig/drivers/cbus/Kconfig 2011-01-28 22:33:39.703215389 +0100
++++ linux-2.6.37/drivers/cbus/Kconfig 2011-01-28 23:41:57.094298060 +0100
+@@ -94,4 +94,12 @@
to Retu/Vilma. Detection state and events are exposed through
sysfs.
@@ -24,17 +24,13 @@ Index: linux-2.6.37/drivers/cbus/Kconfig
+ ---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
Index: linux-2.6.37/drivers/cbus/Makefile
===================================================================
---- linux-2.6.37.orig/drivers/cbus/Makefile 2011-01-28 18:14:27.891374053 +0100
-+++ linux-2.6.37/drivers/cbus/Makefile 2011-01-28 18:14:27.952363634 +0100
+--- linux-2.6.37.orig/drivers/cbus/Makefile 2011-01-28 22:33:39.694216931 +0100
++++ linux-2.6.37/drivers/cbus/Makefile 2011-01-28 22:33:39.754206648 +0100
@@ -12,3 +12,6 @@
obj-$(CONFIG_CBUS_TAHVO_USER) += tahvo-user.o
obj-$(CONFIG_CBUS_RETU_USER) += retu-user.o
@@ -45,16 +41,16 @@ Index: linux-2.6.37/drivers/cbus/Makefile
Index: linux-2.6.37/drivers/cbus/n810bm_main.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.37/drivers/cbus/n810bm_main.c 2011-01-28 18:14:27.952363634 +0100
-@@ -0,0 +1,397 @@
++++ linux-2.6.37/drivers/cbus/n810bm_main.c 2011-01-28 23:41:23.510064352 +0100
+@@ -0,0 +1,562 @@
+/*
+ * Nokia n810 battery management
+ *
-+ * WARNING: This driver is based on reverse engineered information.
++ * 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 Michael Buesch <mb@bu3sch.de>
++ * 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
@@ -84,10 +80,6 @@ Index: linux-2.6.37/drivers/cbus/n810bm_main.c
+#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
@@ -222,6 +214,42 @@ Index: linux-2.6.37/drivers/cbus/n810bm_main.c
+ return value;
+}
+
++static int adc_sanity_check(struct n810bm *bm, unsigned int channel)
++{
++ int value;
++
++ value = retu_read_adc(channel);
++ if (value < 0) {
++ dev_err(&bm->pdev->dev, "Failed to read GND ADC channel %u",
++ channel);
++ return -EIO;
++ }
++ dev_info(&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(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)
+{
@@ -239,6 +267,51 @@ Index: linux-2.6.37/drivers/cbus/n810bm_main.c
+ 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)
+{
@@ -294,7 +367,7 @@ Index: linux-2.6.37/drivers/cbus/n810bm_main.c
+
+static void n810bm_adc_irq_handler(unsigned long data)
+{
-+ struct n810bm *bm = (struct n810bm *)data;
++// struct n810bm *bm = (struct n810bm *)data;
+
+ retu_ack_irq(RETU_INT_ADCS);
+ //TODO
@@ -341,6 +414,69 @@ Index: linux-2.6.37/drivers/cbus/n810bm_main.c
+}
+static DEVICE_ATTR(batt_capacity, 0444, n810bm_attr_capacity_show, NULL);
+
++static ssize_t n810bm_attr_battemp_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 = 0;
++ int k, err = -ENODEV;
++
++ spin_lock_irq(&bm->lock);
++ k = n810bm_measure_batt_temp(bm);
++ if (k >= 0) {
++ count = snprintf(buf, PAGE_SIZE, "%d\n", k);
++ err = 0;
++ }
++ spin_unlock_irq(&bm->lock);
++
++ return err ? err : count;
++}
++static DEVICE_ATTR(batt_temp, 0444, n810bm_attr_battemp_show, NULL);
++
++static ssize_t n810bm_attr_charger_voltage(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 = 0;
++ int mv, err = -ENODEV;
++
++ spin_lock_irq(&bm->lock);
++ mv = n810bm_measure_charger_voltage(bm);
++ if (mv >= 0) {
++ count = snprintf(buf, PAGE_SIZE, "%d\n", mv);
++ err = 0;
++ }
++ spin_unlock_irq(&bm->lock);
++
++ return err ? err : count;
++}
++static DEVICE_ATTR(charger_voltage, 0444, n810bm_attr_charger_voltage, NULL);
++
++static ssize_t n810bm_attr_backup_batt_voltage(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 = 0;
++ int mv, err = -ENODEV;
++
++ spin_lock_irq(&bm->lock);
++ mv = n810bm_measure_backup_batt_voltage(bm);
++ if (mv >= 0) {
++ count = snprintf(buf, PAGE_SIZE, "%d\n", mv);
++ err = 0;
++ }
++ spin_unlock_irq(&bm->lock);
++
++ return err ? err : count;
++}
++static DEVICE_ATTR(backup_batt_voltage, 0444, n810bm_attr_backup_batt_voltage, NULL);
++
+static void n810bm_hw_exit(struct n810bm *bm)
+{
+ retu_write(bm, RETU_REG_ADCSCR, 0);
@@ -348,17 +484,24 @@ Index: linux-2.6.37/drivers/cbus/n810bm_main.c
+
+static int n810bm_hw_init(struct n810bm *bm)
+{
-+ retu_write(bm, RETU_REG_ADCSCR, 0);
++ int err;
+
++ err = n810bm_check_adc_sanity(bm);
++ if (err)
++ goto error;
+ bm->capacity = n810bm_read_batt_capacity(bm);
+ if (bm->capacity == N810BM_CAP_UNKNOWN) {
+ dev_err(&bm->pdev->dev, "Unknown battery detected");
-+ return -ENODEV;
++ err = -ENODEV;
++ goto error;
+ }
+ dev_info(&bm->pdev->dev, "Detected %u mAh battery\n",
+ (unsigned int)bm->capacity);
+
+ return 0;
++
++error:
++ return err;
+}
+
+static int __devinit n810bm_probe(struct platform_device *pdev)
@@ -383,10 +526,19 @@ Index: linux-2.6.37/drivers/cbus/n810bm_main.c
+ err = device_create_file(&pdev->dev, &dev_attr_batt_capacity);
+ if (err)
+ goto err_rem_charge;
++ err = device_create_file(&pdev->dev, &dev_attr_batt_temp);
++ if (err)
++ goto err_rem_capa;
++ err = device_create_file(&pdev->dev, &dev_attr_charger_voltage);
++ if (err)
++ goto err_rem_temp;
++ err = device_create_file(&pdev->dev, &dev_attr_backup_batt_voltage);
++ if (err)
++ goto err_rem_chg;
+ err = retu_request_irq(RETU_INT_ADCS, n810bm_adc_irq_handler,
+ (unsigned long)bm, "n810bm");
+ if (err)
-+ goto err_rem_capa;
++ goto err_rem_bkup;
+
+ mod_timer(&bm->check_timer, round_jiffies(jiffies + N810BM_CHECK_INTERVAL));
+
@@ -394,6 +546,12 @@ Index: linux-2.6.37/drivers/cbus/n810bm_main.c
+
+ return 0;
+
++err_rem_bkup:
++ device_remove_file(&pdev->dev, &dev_attr_backup_batt_voltage);
++err_rem_chg:
++ device_remove_file(&pdev->dev, &dev_attr_charger_voltage);
++err_rem_temp:
++ device_remove_file(&pdev->dev, &dev_attr_batt_temp);
+err_rem_capa:
+ device_remove_file(&pdev->dev, &dev_attr_batt_capacity);
+err_rem_charge:
@@ -412,6 +570,9 @@ Index: linux-2.6.37/drivers/cbus/n810bm_main.c
+
+ retu_free_irq(RETU_INT_ADCS);
+ del_timer_sync(&bm->check_timer);
++ device_remove_file(&pdev->dev, &dev_attr_backup_batt_voltage);
++ device_remove_file(&pdev->dev, &dev_attr_charger_voltage);
++ device_remove_file(&pdev->dev, &dev_attr_batt_temp);
+ device_remove_file(&pdev->dev, &dev_attr_batt_capacity);
+ device_remove_file(&pdev->dev, &dev_attr_batt_charge);
+ n810bm_hw_exit(bm);
@@ -446,8 +607,8 @@ Index: linux-2.6.37/drivers/cbus/n810bm_main.c
+MODULE_AUTHOR("Michael Buesch");
Index: linux-2.6.37/drivers/cbus/retu.c
===================================================================
---- linux-2.6.37.orig/drivers/cbus/retu.c 2011-01-28 18:14:27.892373882 +0100
-+++ linux-2.6.37/drivers/cbus/retu.c 2011-01-28 18:14:27.952363634 +0100
+--- linux-2.6.37.orig/drivers/cbus/retu.c 2011-01-28 22:33:39.695216760 +0100
++++ linux-2.6.37/drivers/cbus/retu.c 2011-01-28 22:33:39.754206648 +0100
@@ -85,10 +85,10 @@
*
* This function writes a value to the specified register
@@ -463,8 +624,8 @@ Index: linux-2.6.37/drivers/cbus/retu.c
void retu_set_clear_reg_bits(int reg, u16 set, u16 clear)
Index: linux-2.6.37/drivers/cbus/retu.h
===================================================================
---- linux-2.6.37.orig/drivers/cbus/retu.h 2011-01-28 18:14:27.892373882 +0100
-+++ linux-2.6.37/drivers/cbus/retu.h 2011-01-28 18:14:27.953363463 +0100
+--- linux-2.6.37.orig/drivers/cbus/retu.h 2011-01-28 22:33:39.695216760 +0100
++++ linux-2.6.37/drivers/cbus/retu.h 2011-01-28 22:40:55.380584650 +0100
@@ -39,6 +39,7 @@
#define RETU_REG_CC2 0x0e /* Common control register 2 */
#define RETU_REG_CTRL_CLR 0x0f /* Regulator clear register */
@@ -473,9 +634,27 @@ Index: linux-2.6.37/drivers/cbus/retu.h
#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 @@
+@@ -57,8 +58,25 @@
+
#define MAX_RETU_IRQ_HANDLERS 16
++/* ADC channels */
++#define RETU_ADC_GND 0x00 /* Ground */
++#define RETU_ADC_BSI 0x01 /* Battery Size Indicator */
++#define RETU_ADC_BATTEMP 0x02 /* Battery temperature */
++#define RETU_ADC_CHGVOLT 0x03 /* Charger voltage */
++#define RETU_ADC_HEADSET 0x04 /* Headset detection */
++#define RETU_ADC_HOOKDET 0x05 /* Hook detection */
++#define RETU_ADC_RFGP 0x06 /* RF GP */
++#define RETU_ADC_WBTX 0x07 /* Wideband Tx detection */
++#define RETU_ADC_BATTVOLT 0x08 /* Battery voltage measurement */
++#define RETU_ADC_GND2 0x09 /* Ground */
++#define RETU_ADC_LIGHTSENS 0x0A /* Light sensor */
++#define RETU_ADC_LIGHTTEMP 0x0B /* Light sensor temperature */
++#define RETU_ADC_BKUPVOLT 0x0C /* Backup battery voltage */
++#define RETU_ADC_TEMP 0x0D /* RETU temperature */
++
++
int retu_read_reg(int reg);
-void retu_write_reg(int reg, u16 val);
+int retu_write_reg(int reg, u16 val);
@@ -484,8 +663,8 @@ Index: linux-2.6.37/drivers/cbus/retu.h
int retu_request_irq(int id, void *irq_handler, unsigned long arg, char *name);
Index: linux-2.6.37/arch/arm/mach-omap2/board-n8x0.c
===================================================================
---- linux-2.6.37.orig/arch/arm/mach-omap2/board-n8x0.c 2011-01-28 18:14:27.876376613 +0100
-+++ linux-2.6.37/arch/arm/mach-omap2/board-n8x0.c 2011-01-28 18:14:27.953363463 +0100
+--- linux-2.6.37.orig/arch/arm/mach-omap2/board-n8x0.c 2011-01-28 22:33:39.679219500 +0100
++++ linux-2.6.37/arch/arm/mach-omap2/board-n8x0.c 2011-01-28 22:33:39.754206648 +0100
@@ -907,6 +907,17 @@
ARRAY_SIZE(n8x0_gpio_switches));
}
@@ -516,7 +695,7 @@ Index: linux-2.6.37/arch/arm/mach-omap2/board-n8x0.c
Index: linux-2.6.37/drivers/cbus/lipocharge.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.37/drivers/cbus/lipocharge.c 2011-01-28 18:14:27.953363463 +0100
++++ linux-2.6.37/drivers/cbus/lipocharge.c 2011-01-28 22:33:39.755206476 +0100
@@ -0,0 +1,63 @@
+/*
+ * Generic LIPO battery charger
@@ -584,7 +763,7 @@ Index: linux-2.6.37/drivers/cbus/lipocharge.c
Index: linux-2.6.37/drivers/cbus/lipocharge.h
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.37/drivers/cbus/lipocharge.h 2011-01-28 18:14:27.953363463 +0100
++++ linux-2.6.37/drivers/cbus/lipocharge.h 2011-01-28 22:33:39.755206476 +0100
@@ -0,0 +1,50 @@
+#ifndef LIPOCHARGE_H_
+#define LIPOCHARGE_H_
@@ -638,8 +817,8 @@ Index: linux-2.6.37/drivers/cbus/lipocharge.h
+#endif /* LIPOCHARGE_H_ */
Index: linux-2.6.37/drivers/cbus/tahvo.h
===================================================================
---- linux-2.6.37.orig/drivers/cbus/tahvo.h 2011-01-28 18:14:27.893373711 +0100
-+++ linux-2.6.37/drivers/cbus/tahvo.h 2011-01-28 18:14:27.953363463 +0100
+--- linux-2.6.37.orig/drivers/cbus/tahvo.h 2011-01-28 22:33:39.696216589 +0100
++++ linux-2.6.37/drivers/cbus/tahvo.h 2011-01-28 22:33:39.755206476 +0100
@@ -30,8 +30,14 @@
#define TAHVO_REG_IDR 0x01 /* Interrupt ID */
#define TAHVO_REG_IDSR 0x02 /* Interrupt status */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 20:58:10 +0000