linaro-dev March 2012

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152 participants
126 discussions

[PATCH 02/02] HWMON: HWMON driver for DA9052/53 PMIC v4

by Ashish Jangam

The DA9052 PMIC provides an Analogue to Digital Converter with 10 bits resolution and 10 channels. This patch monitors the DA9052 PMIC's ADC channels mostly for battery parameters like battery temperature, junction temperature, battery current etc. This patch is functionally tested on Samsung SMDKV6410 Signed-off-by: David Dajun Chen <dchen(a)diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam(a)kpitcummins.com> --- Changes since V3 - Add DIV_ROUND_CLOSEST() macro Changes since v2 - Update documentation file Changes since v1 - Update documentation file for url - Modify the entry in Kconfig file - Correct reporting of junction temperature - Add conversion function for backup battery voltage - Change labels for temperatures in the device attributes to follow sensor index --- Documentation/hwmon/da9052 | 61 ++++++++ drivers/hwmon/Kconfig | 10 ++ drivers/hwmon/Makefile | 1 + drivers/hwmon/da9052-hwmon.c | 344 ++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 416 insertions(+), 0 deletions(-) create mode 100644 Documentation/hwmon/da9052 create mode 100644 drivers/hwmon/da9052-hwmon.c diff --git a/Documentation/hwmon/da9052 b/Documentation/hwmon/da9052 new file mode 100644 index 0000000..ef89855 --- /dev/null +++ b/Documentation/hwmon/da9052 @@ -0,0 +1,61 @@ +Supported chips: + * Dialog Semiconductors DA9052-BC and DA9053-AA/Bx PMICs + Prefix: 'da9052' + Datasheet: Datasheet is not publicly available. + +Authors: David Dajun Chen <dchen(a)diasemi.com> + +Description +----------- + +The DA9052/53 provides an Analogue to Digital Converter (ADC) with 10 bits +resolution and track and hold circuitry combined with an analogue input +multiplexer. The analogue input multiplexer will allow conversion of up to 10 +different inputs. The track and hold circuit ensures stable input voltages at +the input of the ADC during the conversion. + +The ADC is used to measure the following inputs: +Channel 0: VDDOUT - measurement of the system voltage +Channel 1: ICH - internal battery charger current measurement +Channel 2: TBAT - output from the battery NTC +Channel 3: VBAT - measurement of the battery voltage +Channel 4: ADC_IN4 - high impedance input (0 - 2.5V) +Channel 5: ADC_IN5 - high impedance input (0 - 2.5V) +Channel 6: ADC_IN6 - high impedance input (0 - 2.5V) +Channel 7: XY - TSI interface to measure the X and Y voltage of the touch + screen resistive potentiometers +Channel 8: Internal Tjunc. - sense (internal temp. sensor) +Channel 9: VBBAT - measurement of the backup battery voltage + +By using sysfs attributes we can measure the system voltage VDDOUT, the battery +charging current ICH, battery temperature TBAT, battery junction temperature +TJUNC, battery voltage VBAT and the back up battery voltage VBBAT. + +Voltage Monitoring +------------------ + +Voltages are sampled by a 10 bit ADC. + +The battery voltage is calculated as: + Milli volt = ((ADC value * 1000) / 512) + 2500 + +The backup battery voltage is calculated as: + Milli volt = (ADC value * 2500) / 512; + +The voltages on ADC channels 4, 5 and 6 are calculated as: + Milli volt = (ADC value * 2500) / 1023 + +Temperature Monitoring +---------------------- + +Temperatures are sampled by a 10 bit ADC. Junction and battery temperatures +are monitored by the ADC channels. + +The junction temperature is calculated: + Degrees celsius = 1.708 * (TJUNC_RES - T_OFFSET) - 108.8 +The junction temperature attribute is supported by the driver. + +The battery temperature is calculated: + Degree Celcius = 1 / (t1 + 1/298)- 273 +where t1 = (1/B)* ln(( ADCval * 2.5)/(R25*ITBAT*255)) +Default values of R25, B, ITBAT are 10e3, 3380 and 50e-6 respectively. diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index 12bc500..5549c5b 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -313,6 +313,16 @@ config SENSORS_DS1621 This driver can also be built as a module. If so, the module will be called ds1621. +config SENSORS_DA9052_ADC + tristate "Dialog DA9052/DA9053 ADC" + depends on PMIC_DA9052 + help + Say y here to support the ADC found on Dialog Semiconductor + DA9052-BC and DA9053-AA/Bx PMICs. + + This driver can also be built as module. If so, the module + will be called da9052-hwmon. + config SENSORS_EXYNOS4_TMU tristate "Temperature sensor on Samsung EXYNOS4" depends on ARCH_EXYNOS4 diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile index 6d3f11f..a950362 100644 --- a/drivers/hwmon/Makefile +++ b/drivers/hwmon/Makefile @@ -42,6 +42,7 @@ obj-$(CONFIG_SENSORS_APPLESMC) += applesmc.o obj-$(CONFIG_SENSORS_ASC7621) += asc7621.o obj-$(CONFIG_SENSORS_ATXP1) += atxp1.o obj-$(CONFIG_SENSORS_CORETEMP) += coretemp.o +obj-$(CONFIG_SENSORS_DA9052_ADC)+= da9052-hwmon.o obj-$(CONFIG_SENSORS_DME1737) += dme1737.o obj-$(CONFIG_SENSORS_DS620) += ds620.o obj-$(CONFIG_SENSORS_DS1621) += ds1621.o diff --git a/drivers/hwmon/da9052-hwmon.c b/drivers/hwmon/da9052-hwmon.c new file mode 100644 index 0000000..7d356a9 --- /dev/null +++ b/drivers/hwmon/da9052-hwmon.c @@ -0,0 +1,344 @@ +/* + * HWMON Driver for Dialog DA9052 + * + * Copyright(c) 2012 Dialog Semiconductor Ltd. + * + * Author: David Dajun Chen <dchen(a)diasemi.com> + * + * 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. + * + */ + +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/hwmon.h> +#include <linux/hwmon-sysfs.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/platform_device.h> + +#include <linux/mfd/da9052/da9052.h> +#include <linux/mfd/da9052/reg.h> + +struct da9052_hwmon { + struct da9052 *da9052; + struct device *class_device; + struct mutex hwmon_lock; +}; + +static const char * const input_names[] = { + [DA9052_ADC_VDDOUT] = "VDDOUT", + [DA9052_ADC_ICH] = "CHARGING CURRENT", + [DA9052_ADC_TBAT] = "BATTERY TEMP", + [DA9052_ADC_VBAT] = "BATTERY VOLTAGE", + [DA9052_ADC_IN4] = "ADC IN4", + [DA9052_ADC_IN5] = "ADC IN5", + [DA9052_ADC_IN6] = "ADC IN6", + [DA9052_ADC_TJUNC] = "BATTERY JUNCTION TEMP", + [DA9052_ADC_VBBAT] = "BACK-UP BATTERY VOLTAGE", +}; + +/* Conversion function for VDDOUT and VBAT */ +static inline int volt_reg_to_mV(int value) +{ + return DIV_ROUND_CLOSEST(value * 1000, 512) + 2500; +} + +/* Conversion function for ADC channels 4, 5 and 6 */ +static inline int input_reg_to_mV(int value) +{ + return DIV_ROUND_CLOSEST(value * 2500, 1023); +} + +/* Conversion function for VBBAT */ +static inline int vbbat_reg_to_mV(int value) +{ + return DIV_ROUND_CLOSEST(value * 2500, 512); +} + +static int da9052_enable_vddout_channel(struct da9052 *da9052) +{ + int ret; + + ret = da9052_reg_read(da9052, DA9052_ADC_CONT_REG); + if (ret < 0) + return ret; + + ret |= DA9052_ADCCONT_AUTOVDDEN; + + return da9052_reg_write(da9052, DA9052_ADC_CONT_REG, ret); +} + +static int da9052_disable_vddout_channel(struct da9052 *da9052) +{ + int ret; + + ret = da9052_reg_read(da9052, DA9052_ADC_CONT_REG); + if (ret < 0) + return ret; + + ret &= ~DA9052_ADCCONT_AUTOVDDEN; + + return da9052_reg_write(da9052, DA9052_ADC_CONT_REG, ret); +} + +static ssize_t da9052_read_vddout(struct device *dev, + struct device_attribute *devattr, char *buf) +{ + struct da9052_hwmon *hwmon = dev_get_drvdata(dev); + int ret, vdd; + + mutex_lock(&hwmon->hwmon_lock); + + ret = da9052_enable_vddout_channel(hwmon->da9052); + if (ret < 0) + goto hwmon_err; + + vdd = da9052_reg_read(hwmon->da9052, DA9052_VDD_RES_REG); + if (vdd < 0) { + ret = vdd; + goto hwmon_err_release; + } + + ret = da9052_disable_vddout_channel(hwmon->da9052); + if (ret < 0) + goto hwmon_err; + + mutex_unlock(&hwmon->hwmon_lock); + return sprintf(buf, "%d\n", volt_reg_to_mV(vdd)); + +hwmon_err_release: + da9052_disable_vddout_channel(hwmon->da9052); +hwmon_err: + mutex_unlock(&hwmon->hwmon_lock); + return ret; +} + +static ssize_t da9052_read_ich(struct device *dev, + struct device_attribute *devattr, char *buf) +{ + struct da9052_hwmon *hwmon = dev_get_drvdata(dev); + int ret; + + ret = da9052_reg_read(hwmon->da9052, DA9052_ICHG_AV_REG); + if (ret < 0) + return ret; + + /* Equivalent to 3.9mA/bit in register ICHG_AV */ + return sprintf(buf, "%d\n", DIV_ROUND_CLOSEST(ret * 39, 10)); +} + +static ssize_t da9052_read_tbat(struct device *dev, + struct device_attribute *devattr, char *buf) +{ + struct da9052_hwmon *hwmon = dev_get_drvdata(dev); + + return sprintf(buf, "%d\n", da9052_adc_read_temp(hwmon->da9052)); +} + +static ssize_t da9052_read_vbat(struct device *dev, + struct device_attribute *devattr, char *buf) +{ + struct da9052_hwmon *hwmon = dev_get_drvdata(dev); + int ret; + + ret = da9052_adc_manual_read(hwmon->da9052, DA9052_ADC_VBAT); + if (ret < 0) + return ret; + + return sprintf(buf, "%d\n", volt_reg_to_mV(ret)); +} + +static ssize_t da9052_read_misc_channel(struct device *dev, + struct device_attribute *devattr, + char *buf) +{ + struct da9052_hwmon *hwmon = dev_get_drvdata(dev); + int channel = to_sensor_dev_attr(devattr)->index; + int ret; + + ret = da9052_adc_manual_read(hwmon->da9052, channel); + if (ret < 0) + return ret; + + return sprintf(buf, "%d\n", input_reg_to_mV(ret)); +} + +static ssize_t da9052_read_tjunc(struct device *dev, + struct device_attribute *devattr, char *buf) +{ + struct da9052_hwmon *hwmon = dev_get_drvdata(dev); + int tjunc; + int toffset; + + tjunc = da9052_reg_read(hwmon->da9052, DA9052_TJUNC_RES_REG); + if (tjunc < 0) + return tjunc; + + toffset = da9052_reg_read(hwmon->da9052, DA9052_T_OFFSET_REG); + if (toffset < 0) + return toffset; + + /* + * Degrees celsius = 1.708 * (TJUNC_RES - T_OFFSET) - 108.8 + * T_OFFSET is a trim value used to improve accuracy of the result + */ + return sprintf(buf, "%d\n", 1708 * (tjunc - toffset) - 108800); +} + +static ssize_t da9052_read_vbbat(struct device *dev, + struct device_attribute *devattr, char *buf) +{ + struct da9052_hwmon *hwmon = dev_get_drvdata(dev); + int ret; + + ret = da9052_adc_manual_read(hwmon->da9052, DA9052_ADC_VBBAT); + if (ret < 0) + return ret; + + return sprintf(buf, "%d\n", vbbat_reg_to_mV(ret)); +} + +static ssize_t da9052_hwmon_show_name(struct device *dev, + struct device_attribute *devattr, + char *buf) +{ + return sprintf(buf, "da9052-hwmon\n"); +} + +static ssize_t show_label(struct device *dev, + struct device_attribute *devattr, char *buf) +{ + return sprintf(buf, "%s\n", + input_names[to_sensor_dev_attr(devattr)->index]); +} + +static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, da9052_read_vddout, NULL, + DA9052_ADC_VDDOUT); +static SENSOR_DEVICE_ATTR(in0_label, S_IRUGO, show_label, NULL, + DA9052_ADC_VDDOUT); +static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, da9052_read_vbat, NULL, + DA9052_ADC_VBAT); +static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, + DA9052_ADC_VBAT); +static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, da9052_read_misc_channel, NULL, + DA9052_ADC_IN4); +static SENSOR_DEVICE_ATTR(in4_label, S_IRUGO, show_label, NULL, + DA9052_ADC_IN4); +static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, da9052_read_misc_channel, NULL, + DA9052_ADC_IN5); +static SENSOR_DEVICE_ATTR(in5_label, S_IRUGO, show_label, NULL, + DA9052_ADC_IN5); +static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, da9052_read_misc_channel, NULL, + DA9052_ADC_IN6); +static SENSOR_DEVICE_ATTR(in6_label, S_IRUGO, show_label, NULL, + DA9052_ADC_IN6); +static SENSOR_DEVICE_ATTR(in9_input, S_IRUGO, da9052_read_vbbat, NULL, + DA9052_ADC_VBBAT); +static SENSOR_DEVICE_ATTR(in9_label, S_IRUGO, show_label, NULL, + DA9052_ADC_VBBAT); + +static SENSOR_DEVICE_ATTR(curr1_input, S_IRUGO, da9052_read_ich, NULL, + DA9052_ADC_ICH); +static SENSOR_DEVICE_ATTR(curr1_label, S_IRUGO, show_label, NULL, + DA9052_ADC_ICH); + +static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, da9052_read_tbat, NULL, + DA9052_ADC_TBAT); +static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, show_label, NULL, + DA9052_ADC_TBAT); +static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO, da9052_read_tjunc, NULL, + DA9052_ADC_TJUNC); +static SENSOR_DEVICE_ATTR(temp8_label, S_IRUGO, show_label, NULL, + DA9052_ADC_TJUNC); + +static DEVICE_ATTR(name, S_IRUGO, da9052_hwmon_show_name, NULL); + +static struct attribute *da9052_attr[] = { + &dev_attr_name.attr, + &sensor_dev_attr_in0_input.dev_attr.attr, + &sensor_dev_attr_in0_label.dev_attr.attr, + &sensor_dev_attr_in3_input.dev_attr.attr, + &sensor_dev_attr_in3_label.dev_attr.attr, + &sensor_dev_attr_in4_input.dev_attr.attr, + &sensor_dev_attr_in4_label.dev_attr.attr, + &sensor_dev_attr_in5_input.dev_attr.attr, + &sensor_dev_attr_in5_label.dev_attr.attr, + &sensor_dev_attr_in6_input.dev_attr.attr, + &sensor_dev_attr_in6_label.dev_attr.attr, + &sensor_dev_attr_in9_input.dev_attr.attr, + &sensor_dev_attr_in9_label.dev_attr.attr, + &sensor_dev_attr_curr1_input.dev_attr.attr, + &sensor_dev_attr_curr1_label.dev_attr.attr, + &sensor_dev_attr_temp2_input.dev_attr.attr, + &sensor_dev_attr_temp2_label.dev_attr.attr, + &sensor_dev_attr_temp8_input.dev_attr.attr, + &sensor_dev_attr_temp8_label.dev_attr.attr, + NULL +}; + +static const struct attribute_group da9052_attr_group = {.attrs = da9052_attr}; + +static int __init da9052_hwmon_probe(struct platform_device *pdev) +{ + struct da9052_hwmon *hwmon; + int ret; + + hwmon = devm_kzalloc(&pdev->dev, sizeof(struct da9052_hwmon), + GFP_KERNEL); + if (!hwmon) + return -ENOMEM; + + mutex_init(&hwmon->hwmon_lock); + hwmon->da9052 = dev_get_drvdata(pdev->dev.parent); + + platform_set_drvdata(pdev, hwmon); + + ret = sysfs_create_group(&pdev->dev.kobj, &da9052_attr_group); + if (ret) + goto err_mem; + + hwmon->class_device = hwmon_device_register(&pdev->dev); + if (IS_ERR(hwmon->class_device)) { + ret = PTR_ERR(hwmon->class_device); + goto err_sysfs; + } + + return 0; + +err_sysfs: + sysfs_remove_group(&pdev->dev.kobj, &da9052_attr_group); +err_mem: + return ret; +} + +static int __devexit da9052_hwmon_remove(struct platform_device *pdev) +{ + struct da9052_hwmon *hwmon = platform_get_drvdata(pdev); + + hwmon_device_unregister(hwmon->class_device); + sysfs_remove_group(&pdev->dev.kobj, &da9052_attr_group); + + return 0; +} + +static struct platform_driver da9052_hwmon_driver = { + .probe = da9052_hwmon_probe, + .remove = __devexit_p(da9052_hwmon_remove), + .driver = { + .name = "da9052-hwmon", + .owner = THIS_MODULE, + }, +}; + +module_platform_driver(da9052_hwmon_driver); + +MODULE_AUTHOR("David Dajun Chen <dchen(a)diasemi.com>"); +MODULE_DESCRIPTION("DA9052 HWMON driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:da9052-hwmon");

12 years, 2 months

Last call for patches for the 12.02 release of linux-linaro kernel

by Andrey Konovalov

Greetings, If someone has something which is not in the mainline, was not in the 12.01 kernel release, but worth including into the 12.02 kernel release, please let me know by the end of Feb 14, PST (the git branch where I could pull from). This release will be v3.3-rc3 based, so you patches should be based on that (easiest for me), or on the tip of the linus tree. My expectations are that the power management WG has some topics to add to the 12.02. I am aware of git://git.secretlab.ca/git/linux-2.6.git, irqdomain/next The kernel working group has some blueprints for 12.02. Please let me know, if there is something for me to do here. The following commits from linux-linaro-3.2 branch will be carried over to 12.02: commit 2eb6f8b98d8471c83be7e3ab53fe4386884c96a9 Author: Vincent Guittot <vincent.guittot(a)linaro.org> Date: Fri Oct 21 09:02:47 2011 +0200 sched: Ensure cpu_power periodic update commit 2b21b980917662503a16e079b5d4a5a8a17886cd Author: Arnd Bergmann <arnd(a)arndb.de> Date: Sat Oct 8 17:07:50 2011 +0200 ARM: kprobes: work around build errors commit 61d24dd4d0528d369ea81f6e5d5e1db9c62ad46a Author: Ming Lei <ming.lei(a)canonical.com> Date: Wed Aug 31 00:03:13 2011 +0800 usb: ehci: make HC see up-to-date qh/qtd descriptor ASAP Amit (Amit Daniel Kachhap), please let me know if for 12.02 I should use the commits below, or take an updated version from you: ARM: exynos4: Add thermal sensor driver platform device support thermal: exynos4: Register the tmu sensor with the thermal interface layer thermal: exynos: Add thermal interface support for linux thermal layer thermal: Add generic cpu cooling implementation thermal: Add a new trip type to use cooling device instance number EXYNOS: Make EXYNOS common cpufreq driver ARM: exynos: Enable l2 configuration through device tree ARM: exynos: remove useless code to save/restore L2 ARM: exynos: save L2 settings during bootup ARM: s5p: add L2 early resume code ARM: exynos: Add support AFTR mode on EXYNOS4210 Thanks, Andrey Konovalov

12 years, 2 months

[PATCH v10] mfd: Add anatop mfd driver

by Ying-Chun Liu (PaulLiu)

From: "Ying-Chun Liu (PaulLiu)" <paul.liu(a)linaro.org> Anatop is a mfd chip embedded in Freescale i.MX6Q SoC. Anatop provides regulators and thermal. This driver handles the address space and the operation of the mfd device. Signed-off-by: Ying-Chun Liu (PaulLiu) <paul.liu(a)linaro.org> Acked-by: Shawn Guo <shawn.guo(a)linaro.org> Cc: Samuel Ortiz <sameo(a)linux.intel.com> Cc: Mark Brown <broonie(a)opensource.wolfsonmicro.com> Cc: Venu Byravarasu <vbyravarasu(a)nvidia.com> Cc: Peter Korsgaard <jacmet(a)sunsite.dk> Cc: Arnd Bergmann <arnd(a)arndb.de> Cc: Rob Lee <rob.lee(a)linaro.org> --- drivers/mfd/Kconfig | 8 +++ drivers/mfd/Makefile | 1 + drivers/mfd/anatop-mfd.c | 137 ++++++++++++++++++++++++++++++++++++++++++++ include/linux/mfd/anatop.h | 40 +++++++++++++ 4 files changed, 186 insertions(+), 0 deletions(-) create mode 100644 drivers/mfd/anatop-mfd.c create mode 100644 include/linux/mfd/anatop.h diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 82da448..c3a9f31 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -846,6 +846,14 @@ config MFD_INTEL_MSIC Passage) chip. This chip embeds audio, battery, GPIO, etc. devices used in Intel Medfield platforms. +config MFD_ANATOP + bool "Support for Freescale i.MX on-chip ANATOP controller" + depends on SOC_IMX6Q + help + Select this option to enable Freescale i.MX on-chip ANATOP + MFD controller. This controller embeds regulator and + thermal devices for Freescale i.MX platforms. + endmenu endif diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 27430d3..42c8bf6 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -113,3 +113,4 @@ obj-$(CONFIG_TPS65911_COMPARATOR) += tps65911-comparator.o obj-$(CONFIG_MFD_AAT2870_CORE) += aat2870-core.o obj-$(CONFIG_MFD_INTEL_MSIC) += intel_msic.o obj-$(CONFIG_MFD_S5M_CORE) += s5m-core.o s5m-irq.o +obj-$(CONFIG_MFD_ANATOP) += anatop-mfd.o diff --git a/drivers/mfd/anatop-mfd.c b/drivers/mfd/anatop-mfd.c new file mode 100644 index 0000000..2af4248 --- /dev/null +++ b/drivers/mfd/anatop-mfd.c @@ -0,0 +1,137 @@ +/* + * Anatop MFD driver + * + * Copyright (C) 2012 Ying-Chun Liu (PaulLiu) <paul.liu(a)linaro.org> + * Copyright (C) 2012 Linaro + * + * 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. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * 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. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + */ + +#include <linux/io.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/of.h> +#include <linux/of_platform.h> +#include <linux/of_address.h> +#include <linux/mfd/anatop.h> + +u32 anatop_get_bits(struct anatop *adata, u32 addr, int bit_shift, + int bit_width) +{ + u32 val, mask; + + if (bit_width == 32) + mask = ~0; + else + mask = (1 << bit_width) - 1; + + val = readl(adata->ioreg + addr); + val = (val >> bit_shift) & mask; + + return val; +} +EXPORT_SYMBOL_GPL(anatop_get_bits); + +void anatop_set_bits(struct anatop *adata, u32 addr, int bit_shift, + int bit_width, u32 data) +{ + u32 val, mask; + + if (bit_width == 32) + mask = ~0; + else + mask = (1 << bit_width) - 1; + + spin_lock(&adata->reglock); + val = readl(adata->ioreg + addr) & ~(mask << bit_shift); + writel((data << bit_shift) | val, adata->ioreg + addr); + spin_unlock(&adata->reglock); +} +EXPORT_SYMBOL_GPL(anatop_set_bits); + +static const struct of_device_id of_anatop_match[] = { + { .compatible = "fsl,imx6q-anatop", }, + { }, +}; + +static int __devinit of_anatop_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + void *ioreg; + struct anatop *drvdata; + + ioreg = of_iomap(np, 0); + if (!ioreg) + return -EADDRNOTAVAIL; + drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL); + if (!drvdata) + return -ENOMEM; + drvdata->ioreg = ioreg; + spin_lock_init(&drvdata->reglock); + platform_set_drvdata(pdev, drvdata); + of_platform_populate(np, of_anatop_match, NULL, dev); + + return 0; +} + +static int __devexit of_anatop_remove(struct platform_device *pdev) +{ + struct anatop *drvdata; + drvdata = platform_get_drvdata(pdev); + iounmap(drvdata->ioreg); + + return 0; +} + +static struct platform_driver anatop_of_driver = { + .driver = { + .name = "anatop-mfd", + .owner = THIS_MODULE, + .of_match_table = of_anatop_match, + }, + .probe = of_anatop_probe, + .remove = of_anatop_remove, +}; + +static int __init anatop_init(void) +{ + return platform_driver_register(&anatop_of_driver); +} +postcore_initcall(anatop_init); + +static void __exit anatop_exit(void) +{ + platform_driver_unregister(&anatop_of_driver); +} +module_exit(anatop_exit); + +MODULE_AUTHOR("Ying-Chun Liu (PaulLiu) <paul.liu(a)linaro.org>"); +MODULE_DESCRIPTION("ANATOP MFD driver"); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/mfd/anatop.h b/include/linux/mfd/anatop.h new file mode 100644 index 0000000..22c1007 --- /dev/null +++ b/include/linux/mfd/anatop.h @@ -0,0 +1,40 @@ +/* + * anatop.h - Anatop MFD driver + * + * Copyright (C) 2012 Ying-Chun Liu (PaulLiu) <paul.liu(a)linaro.org> + * Copyright (C) 2012 Linaro + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef __LINUX_MFD_ANATOP_H +#define __LINUX_MFD_ANATOP_H + +#include <linux/spinlock.h> + +/** + * anatop - MFD data + * @ioreg: ioremap register + * @reglock: spinlock for register read/write + */ +struct anatop { + void *ioreg; + spinlock_t reglock; +}; + +extern u32 anatop_get_bits(struct anatop *, u32, int, int); +extern void anatop_set_bits(struct anatop *, u32, int, int, u32); + +#endif /* __LINUX_MFD_ANATOP_H */ -- 1.7.9.1

12 years, 2 months

Linux kernel with rpmsg and possibility for compiling powervr drivers

by Martin Ertsås

Hi. I'm currently fumbling around in the dark, trying to find a kernel which I can use to compile the powervr drivers, as well as with rpmsg support. Ideally the rpmsg should already be in the kernel, but I can see that this might be hard, and cherry picking is an ok solution. I'm wondering if one of the ti landing team kernels might be suitable for this, and if one of these is considered a stable kernel? Last kernel I looked at was the LEB 3.1.5+ kernel, release-linux-2011-12, which worked fine for compiling the pvr drivers from rsalveti, but didn't contain rpmsg drivers. When I tried the release-linux-2012-01 kernel, 3.2.0+, it could compile the powervr driver, but didn't contain the rpmsg drivers and didn't actually run, as I got the message 'coherent pool not initialized' from the kernel when trying to allocate for the ehci-omap. The kernel will be run on a device with an omap4460 if this is of interest. I would really appreciate your help on this, as I feel quite lost in all the different branches and tags which reside in the different linaro kernels, so a repo with a stable commit would really help. As most rpmsg implementations I have seen follows the 3.2 kernel, that would really be preferable if I need to cherry pick, but if not I don't really care if it's 3.1 or 3.2. If you have any questions, please do not hesitate to ask them. Best regard Martin Ertsas

12 years, 2 months

Another Friday, another ARM Porting Jam!

by Ricardo Salveti

Hello, Continuing on the ARM Porting effort to fix the remaining issues with Precise, we'll be having the ARM Porting Jam this friday as well! The main focus for this Friday, besides the usual FTBFS issues described at http://people.linaro.org/~rsalveti/arm-porting-queue/arm-porting-queue-repo…, is porting the most packages we can to be multi-arch compatible. This will allow us to increase the list of packages we can easily cross-compile using multi-arch. Wookey got a quite long list of things to do at https://wiki.linaro.org/Platform/DevPlatform/CrossCompile/MultiarchCrossBui…, so please have a look and make sure to get in touch with him at #linaro @ freenode if you need any extra help. Happy porting! -- Ricardo Salveti de Araujo

12 years, 2 months

Changes to Blueprint work items in Launchpad

by Guilherme Salgado

Hi there, Launchpad now supports blueprint work items natively and we've already migrated the work items from the whiteboards of most Linaro Blueprints. Most of us wouldn't even notice those changes because we still have a text field to enter work items and it uses the exact same format we used before. In the future we might improve the user experience but for now we decided to keep the same UI and format. There's a blog post with more information, if you're curious: http://blog.launchpad.net/ In practice this just means you'll enter the work items in the 'Work items' field instead of the whiteboard (the meta info [acceptance/headline] still go there, though), but the work items of some of our Blueprints could not be migrated, so I've spammed^W sent an email to the owner/assignee of each of them. It would be nice if those of you who receive that email migrated your BPs manually but even if you don't status.l.o is setup to pull work items from both the new field and the whiteboard, so you'll still see your work items there. And if you're curious why we're doing all this, it's so that we can implement the monthly engineering views in Launchpad: https://dev.launchpad.net/Projects/WorkItems Cheers, -- Guilherme Salgado <https://launchpad.net/~salgado>

12 years, 2 months

[PATCH v6 0/3] common clk framework

by Mike Turquette

The common clock framework defines a common struct clk as well as an implementation of the clk api that unifies clock operations on various platforms and devices. The net result is consolidation of many different struct clk definitions and platform-specific clock framework implementations. Thanks to Sascha Hauer and Andrew Lunn for their great review and feedback on the previous v5 series. Major changes since v5: * removed redundant HAVE_CLK_PREPARE in Kconfig * new CONFIG_COMMON_CLK_DISABLE_UNUSED feature * results in a new clk_op callback, .is_enabled * standardized the hw-specific locking in the basic clock types * export the individual ops for each basic clock type * improve registration for single-parent basic clocks (thanks Sascha) * fixed bugs in gate clock's static initializers (thanks Andrew) * overall improvements to Documentation/clk.txt * rebased onto Linus' v3.3-rc6 tag Major changes since v4: * rolled in TGLX's comments on overall design. We now have, * proper handling of root clocks and orphan clocks * multi-parent clocks are handled in the core * struct clk is shielded from struct clk_foo and vice versa * this is a return to the previous struct clk_hw design * split basic clock types out into separate files * split headers up by purpose * clk.h remains the driver-level interface * declarations for rate change notifiers are the only additions * clk-provider.h is primary header for implementing clock operations * clk-private.h allows for static initialization of clock data * validation and bug fixes * rebased onto Linus' v3.3-rc5 tag Patches can be pulled from: git://git.linaro.org/people/mturquette/linux.git v3.3-rc6-clkv6 v5 can be found at, http://article.gmane.org/gmane.linux.kernel/1261472 v4 can be found at, http://article.gmane.org/gmane.linux.linaro.devel/8896/ v3 can be found at, http://article.gmane.org/gmane.linux.kernel/1218622 Mike Turquette (3): Documentation: common clk API clk: introduce the common clock framework clk: basic clock hardware types Documentation/clk.txt | 233 +++++++ drivers/clk/Kconfig | 39 ++ drivers/clk/Makefile | 2 + drivers/clk/clk-divider.c | 204 ++++++ drivers/clk/clk-fixed-rate.c | 82 +++ drivers/clk/clk-gate.c | 157 +++++ drivers/clk/clk-mux.c | 123 ++++ drivers/clk/clk.c | 1424 ++++++++++++++++++++++++++++++++++++++++++ include/linux/clk-private.h | 192 ++++++ include/linux/clk-provider.h | 298 +++++++++ include/linux/clk.h | 68 ++- 11 files changed, 2817 insertions(+), 5 deletions(-) create mode 100644 Documentation/clk.txt create mode 100644 drivers/clk/clk-divider.c create mode 100644 drivers/clk/clk-fixed-rate.c create mode 100644 drivers/clk/clk-gate.c create mode 100644 drivers/clk/clk-mux.c create mode 100644 drivers/clk/clk.c create mode 100644 include/linux/clk-private.h create mode 100644 include/linux/clk-provider.h -- 1.7.5.4

12 years, 2 months

Announcing Linarotv-xmbc image

by Tom Gall

For the 12.01 cycle the Linaro Platforms team is pleased to announce the availability of the new linarotv-xbmc based image. This combines the xbmc media server project with linaro's leb to result in a "works out of the box" arm based media server image. It can be found at http://snapshots.linaro.org/oneiric/linaro-o-linarotv-xbmc/ Currently the best experience can be found on Panda/Panda ES however boards with hardware video acceleration enabled should work well. We welcome feedback and suggestions on the image. Support is on a as "best can" basis. Bugs if found should be written against linaro-ubuntu in lauchpad. Enjoy! -- Regards, Tom "Where's the kaboom!? There was supposed to be an earth-shattering kaboom!" Marvin Martian Multimedia Tech Lead | Linaro.org │ Open source software for ARM SoCs w) tom.gall att linaro.org w) tom_gall att vnet.ibm.com h) tom_gall att mac.com

12 years, 2 months

Do ARM Cortex-A9 PMU supoort oprofile

by zachary6626

Sorry disturbing you! I have ask google for do ARM Cortex-A9 PMU supoort oprofile, but it do not have a answer definitely . So i ask you do ARM Cortex-A9 PMU supoort oprofile. Can u help me? zachary6626

12 years, 2 months

[PATCH v9] mfd: Add anatop mfd driver

by Ying-Chun Liu (PaulLiu)

From: "Ying-Chun Liu (PaulLiu)" <paul.liu(a)linaro.org> Anatop is a mfd chip embedded in Freescale i.MX6Q SoC. Anatop provides regulators and thermal. This driver handles the address space and the operation of the mfd device. Signed-off-by: Ying-Chun Liu (PaulLiu) <paul.liu(a)linaro.org> Acked-by: Shawn Guo <shawn.guo(a)linaro.org> Cc: Samuel Ortiz <sameo(a)linux.intel.com> Cc: Mark Brown <broonie(a)opensource.wolfsonmicro.com> Cc: Venu Byravarasu <vbyravarasu(a)nvidia.com> Cc: Peter Korsgaard <jacmet(a)sunsite.dk> --- drivers/mfd/Kconfig | 8 +++ drivers/mfd/Makefile | 1 + drivers/mfd/anatop-mfd.c | 142 ++++++++++++++++++++++++++++++++++++++++++++ include/linux/mfd/anatop.h | 40 ++++++++++++ 4 files changed, 191 insertions(+), 0 deletions(-) create mode 100644 drivers/mfd/anatop-mfd.c create mode 100644 include/linux/mfd/anatop.h diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 82da448..c3a9f31 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -846,6 +846,14 @@ config MFD_INTEL_MSIC Passage) chip. This chip embeds audio, battery, GPIO, etc. devices used in Intel Medfield platforms. +config MFD_ANATOP + bool "Support for Freescale i.MX on-chip ANATOP controller" + depends on SOC_IMX6Q + help + Select this option to enable Freescale i.MX on-chip ANATOP + MFD controller. This controller embeds regulator and + thermal devices for Freescale i.MX platforms. + endmenu endif diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 27430d3..42c8bf6 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -113,3 +113,4 @@ obj-$(CONFIG_TPS65911_COMPARATOR) += tps65911-comparator.o obj-$(CONFIG_MFD_AAT2870_CORE) += aat2870-core.o obj-$(CONFIG_MFD_INTEL_MSIC) += intel_msic.o obj-$(CONFIG_MFD_S5M_CORE) += s5m-core.o s5m-irq.o +obj-$(CONFIG_MFD_ANATOP) += anatop-mfd.o diff --git a/drivers/mfd/anatop-mfd.c b/drivers/mfd/anatop-mfd.c new file mode 100644 index 0000000..4272e60 --- /dev/null +++ b/drivers/mfd/anatop-mfd.c @@ -0,0 +1,142 @@ +/* + * Anatop MFD driver + * + * Copyright (C) 2012 Ying-Chun Liu (PaulLiu) <paul.liu(a)linaro.org> + * Copyright (C) 2012 Linaro + * + * 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. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * 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. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + */ + +#include <linux/io.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/of.h> +#include <linux/of_platform.h> +#include <linux/of_address.h> +#include <linux/mfd/anatop.h> + +u32 anatop_get_bits(struct anatop *adata, u32 addr, int bit_shift, + int bit_width) +{ + u32 val, mask; + + if (bit_width == 32) + mask = ~0; + else + mask = (1 << bit_width) - 1; + + val = readl(adata->ioreg + addr); + val = (val >> bit_shift) & mask; + + return val; +} +EXPORT_SYMBOL(anatop_get_bits); + +void anatop_set_bits(struct anatop *adata, u32 addr, int bit_shift, + int bit_width, u32 data) +{ + u32 val, mask; + + if (bit_width == 32) + mask = ~0; + else + mask = (1 << bit_width) - 1; + + spin_lock(&adata->reglock); + val = readl(adata->ioreg + addr) & ~(mask << bit_shift); + writel((data << bit_shift) | val, adata->ioreg + addr); + spin_unlock(&adata->reglock); +} +EXPORT_SYMBOL(anatop_set_bits); + +static const struct of_device_id of_anatop_subdevice_match[] = { + { .compatible = "fsl,anatop-regulator", }, + { .compatible = "fsl,anatop-thermal", }, + { }, +}; + +static int __devinit of_anatop_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + void *ioreg; + struct anatop *drvdata; + + ioreg = of_iomap(np, 0); + if (!ioreg) + return -EADDRNOTAVAIL; + drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL); + if (!drvdata) + return -ENOMEM; + drvdata->ioreg = ioreg; + spin_lock_init(&drvdata->reglock); + platform_set_drvdata(pdev, drvdata); + of_platform_bus_probe(np, of_anatop_subdevice_match, dev); + + return 0; +} + +static int __devexit of_anatop_remove(struct platform_device *pdev) +{ + struct anatop *drvdata; + drvdata = platform_get_drvdata(pdev); + iounmap(drvdata->ioreg); + return 0; +} + +static const struct of_device_id of_anatop_match[] = { + { .compatible = "fsl,imx6q-anatop", }, + { }, +}; + +static struct platform_driver anatop_of_driver = { + .driver = { + .name = "anatop-mfd", + .owner = THIS_MODULE, + .of_match_table = of_anatop_match, + }, + .probe = of_anatop_probe, + .remove = of_anatop_remove, +}; + +static int __init anatop_init(void) +{ + return platform_driver_register(&anatop_of_driver); +} +postcore_initcall(anatop_init); + +static void __exit anatop_exit(void) +{ + platform_driver_unregister(&anatop_of_driver); +} +module_exit(anatop_exit); + +MODULE_AUTHOR("Ying-Chun Liu (PaulLiu) <paul.liu(a)linaro.org>"); +MODULE_DESCRIPTION("ANATOP MFD driver"); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/mfd/anatop.h b/include/linux/mfd/anatop.h new file mode 100644 index 0000000..22c1007 --- /dev/null +++ b/include/linux/mfd/anatop.h @@ -0,0 +1,40 @@ +/* + * anatop.h - Anatop MFD driver + * + * Copyright (C) 2012 Ying-Chun Liu (PaulLiu) <paul.liu(a)linaro.org> + * Copyright (C) 2012 Linaro + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef __LINUX_MFD_ANATOP_H +#define __LINUX_MFD_ANATOP_H + +#include <linux/spinlock.h> + +/** + * anatop - MFD data + * @ioreg: ioremap register + * @reglock: spinlock for register read/write + */ +struct anatop { + void *ioreg; + spinlock_t reglock; +}; + +extern u32 anatop_get_bits(struct anatop *, u32, int, int); +extern void anatop_set_bits(struct anatop *, u32, int, int, u32); + +#endif /* __LINUX_MFD_ANATOP_H */ -- 1.7.9.1

12 years, 2 months

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linaro-dev March 2012