linaro-dev

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4332 discussions

by Amit Kucheria

Hi all, Git Location: http://git.linaro.org/gitweb?p=arm/big.LITTLE/mp.git;a=summary Branch: big-LITTLE-MP-v1 We're announcing a kernel tree to track the various topics of the big.LITTLE MP project. The aim of this tree is to help consolidate the various topic patchsets that improve the behaviour of Linux on asymmetric cores (e.g. big.LITTLE) and make smarter scheduling decisions possible in order to save power. I'd like to think of it as a linux-next tree focused on asymmetric support enablement. Viresh will recreate this tree when new versions of the topic patchsets are available. IOW, as the patches are reviewed on the lists and go through iterations, we'll pull each topic patchset into a topic branch (e.g. per-task-load-average-v2, arm-asymmetric-support-v3). Then a merge tree will be created (e.g. big-LITTLE-MP-v1) as needed based on the latest versions of these topics. This should allow users to track individual topics or leave out some topics if they so desire. More topics will be added to this tree as the work becomes available. Linaro platform team will take the merge branch (big-LITTLE-MP-v1, -v2, etc.) and use it for platform enablement work and testing on real hardware and models. Problems should be reported on LKML/LAKML as usual if they are related to the individual topic trees. If they're related to a bad merge or config enablement please report on linaro-dev(a)lists.linaro.org. Regards, Amit p.s. People who've shown an interest in this tree have been bcc'ed so they don't miss the announcement. They are requested to join either linaro-dev or linaro-sched-sig for future announcements.

13 years, 6 months

Power Meter

by Zach Pfeffer

Check out our new NI power meter: http://www.youtube.com/watch?v=JYRogshDyVo&feature=plcp We're gonna hook this thing up to LAVA. Its a pretty nice piece of equipment. Specs: NI PXIe-1073 with a NI PXIE-4154 Battery Simulator. -- Zach Pfeffer Android Platform Team Lead, Linaro Platform Teams Linaro.org | Open source software for ARM SoCs Follow Linaro: http://www.facebook.com/pages/Linaro http://twitter.com/#!/linaroorg - http://www.linaro.org/linaro-blog

13 years, 6 months

cpuidle future and improvements

by Daniel Lezcano

Dear all, A few weeks ago, Peter De Schrijver proposed a patch [1] to allow per cpu latencies. We had a discussion about this patchset because it reverse the modifications Deepthi did some months ago [2] and we may want to provide a different implementation. The Linaro Connect [3] event bring us the opportunity to meet people involved in the power management and the cpuidle area for different SoC. With the Tegra3 and big.LITTLE architecture, making per cpu latencies for cpuidle is vital. Also, the SoC vendors would like to have the ability to tune their cpu latencies through the device tree. We agreed in the following steps: 1. factor out / cleanup the cpuidle code as much as possible 2. better sharing of code amongst SoC idle drivers by moving common bits to core code 3. make the cpuidle_state structure contain only data 4. add a API to register latencies per cpu These four steps impacts all the architecture. I began the factor out code / cleanup [4] and that has been accepted upstream and I proposed some modifications [5] but I had a very few answers. The patch review are very slow and done at the last minute at the merge window and that makes code upstreaming very difficult. It is not a reproach, it is just how it is and I would like to propose a solution for that. I propose to host a cpuidle-next tree where all these modifications will be and where people can send patches against, preventing last minutes conflicts and perhaps Lenb will agree to pull from this tree. In the meantime, the tree will be part of the linux-next, the patches will be more widely tested and could be fixed earlier. Thanks -- Daniel [1] http://lwn.net/Articles/491257/ [2] http://lwn.net/Articles/464808/ [3] http://summit.linaro.org/ [4] http://www.mail-archive.com/linux-omap@vger.kernel.org/msg67033.html, http://www.spinics.net/lists/linux-pm/msg27330.html, http://comments.gmane.org/gmane.linux.ports.arm.omap/76311, http://www.digipedia.pl/usenet/thread/18885/11795/ [5] https://lkml.org/lkml/2012/6/8/375 -- <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook | <http://twitter.com/#!/linaroorg> Twitter | <http://www.linaro.org/linaro-blog/> Blog

13 years, 6 months

Re: Ubuntu config fragment

by Jon Medhurst (Tixy)

Adding in Linaro Dev list for more visibility... On Tue, 2012-07-03 at 14:08 -0300, Ricardo Salveti wrote: > On Tue, Jul 3, 2012 at 10:22 AM, Jon Medhurst (Tixy) <tixy(a)linaro.org> wrote: > > Hi Ricardo > > > > I notice the new ubuntu.conf seems to contain everything including the > > kitchen sink. It has things which (as people found out at release time) > > breaks networking and MMC on vexpress (CONFIG_REGULATORS) and it > > contains drivers and other support for loads of hardware which isn't > > present on any Linaro supported device; and if it was, should go in the > > board specific config fragments, not the Ubuntu one. > > This config is basically provided by the official ubuntu kernel > packages. We just removed a few specific devices, and some which would > not make much sense, but other then that it's basically the same one > you can find at your desktop. > > It's useful to enable all these additional configs for a bunch of > reasons, like sharing with Ubuntu, enabling additional usb-based > devices and such. We have tons of bugs requesting us to add stuff to > the kernel config, and having this config fragment solves them all. > > If there's any hardware specific thing that could be disabled, we > could just move to the board config. Regarding CONFIG_REGULATORS, I > just decided to disable it at the vexpress.conf, as it only breaks > stuff at vexpress (and makes sense to track it there). Well, the other boards which need regulators already enable it, so there's not really any need for Ubuntu to have this config. This particular issue isn't worth worrying about - we'll be adding regulators to vexpress to enable the single kernel image initiative - but it does seem to show up a general issue of the blurring of the purpose of config fragments; if Ubuntu enables a bunch of hardware support, what is the roll of the board config fragments? I noticed that the Ubuntu config was patched to remove ATH6KL with the commit title "should be platform dependent". What was the reasoning for singling that driver out? > > I think that for vexpress at least, you have used ubuntu-minimal.conf > > for the 12.06 release and the current CI jobs. What is the plan going > > forward? To me, it would seem to make more sense to start with the > > minimal config and add things as they are found to be missing. > > We tried in the past, but that's just too painful. This time we > decided to give the Ubuntu config a try, and then just disable what we > know will not be used. > > If possible, we'd like to continue using it, and change as needed to > disable whatever you think it shouldn't be there. OK, lets see how it goes. I would like to keep the ubuntu-minimal.conf around and supported, if for no other that selfish reasons as it produces a much smaller (quicker to load) kernel and quicker builds, which is useful for anyone wanting to basic kernel development and testing. (In an ideal world it could be used on nano and developer images but that isn't worth the complexity of a second kernel package and hwpack.) -- Tixy

13 years, 6 months

No space left on device at linaro-android-media-create

by Chunsang Jeong

Hello all, I've found that linaro android images are getting bigger and I got error messages when I tried to put images to sdcard. i.e. "No space left on device" by using linaro-android-media-create. I've been using 4GB sdcard onto Origen and linaro-android-media-create by "apt-get install linaro-image-tools" (Ubuntu 11.10). Is there any configurable re-partitioning option for sdcard on linaro-android-media-create, or do I need bigger one? Cheers. -- Chunsang Jeong (Paul Jeong) * "Whether you believe you can, or you can't, you are right" - Henry Ford*

13 years, 6 months

Agenda for the 2012/7/11 Linaro Android Platform Team Meeting Posted

by Zach Pfeffer

Take a look: https://wiki.linaro.org/Platform/Android/Meetings/2012-07-11 See everyone tomorrow morning on irc.freenode.net in #linaro-meeting at 8 AM Texas time, 14:00 UTC. -- Zach Pfeffer Android Platform Team Lead, Linaro Platform Teams Linaro.org | Open source software for ARM SoCs Follow Linaro: http://www.facebook.com/pages/Linaro http://twitter.com/#!/linaroorg - http://www.linaro.org/linaro-blog

13 years, 6 months

[PATCH] mfd: Implement devicetree support for AB8500 Btemp

by Rajanikanth H.V

From: "Rajanikanth H.V" <rajanikanth.hv(a)stericsson.com> This patch adds device tree support for battery temperature monitor driver Signed-off-by: Rajanikanth H.V <rajanikanth.hv(a)stericsson.com> --- .../bindings/power_supply/ab8500/btemp.txt | 54 ++ arch/arm/boot/dts/db8500.dtsi | 17 + arch/arm/mach-ux500/Makefile | 4 +- arch/arm/mach-ux500/board-mop500-bm.c | 532 ++++++++++++++++++++ arch/arm/mach-ux500/include/mach/board-mop500-bm.h | 24 + drivers/mfd/ab8500-core.c | 1 + drivers/power/Kconfig | 8 +- drivers/power/ab8500_btemp.c | 79 ++- include/linux/mfd/ab8500/pwmleds.h | 20 + 9 files changed, 722 insertions(+), 17 deletions(-) create mode 100644 Documentation/devicetree/bindings/power_supply/ab8500/btemp.txt create mode 100644 arch/arm/mach-ux500/board-mop500-bm.c create mode 100644 arch/arm/mach-ux500/include/mach/board-mop500-bm.h create mode 100644 include/linux/mfd/ab8500/pwmleds.h diff --git a/Documentation/devicetree/bindings/power_supply/ab8500/btemp.txt b/Documentation/devicetree/bindings/power_supply/ab8500/btemp.txt new file mode 100644 index 0000000..8543ed1 --- /dev/null +++ b/Documentation/devicetree/bindings/power_supply/ab8500/btemp.txt @@ -0,0 +1,54 @@ +AB8500 Battery Termperature Monitor Driver + +AB8500 is a mixed signal multimedia and power management +device comprising: power and energy management module, +WalliCharger and USB charger interface, audio, general +purpose ADC TVOut, clock management and SIM card Interface. + +Battery temperature monitoring support is part of 'energy +management module', the other components of this module +are: 'main and USB Combo charger' and fuel guage. + +The properties below describes the node for battery +temperature monitor driver. + +Required Properties: +- compatible = "stericsson,ab8500-btemp" + +interrupts: + Four battery temperature ranges are be defined + which results in interrupt events as: + - Btemp + - BtempLow + - BtempMedium + - BtempHigh + + +Supplied-to: + This shall be power supply class dependency where in the runtime battery + properties will be shared across fuel guage and charging algorithm driver. + +Thermister-interface: + 'btemp' and 'batctrl' are the pins interfaced for battery temperature + measurement, btemp is used when NTC(Negative Termperature coefficient) + resister is interfaced external to battery and batctrl is used when + NTC resister is internal to battery. + +example: +ab8500-btemp { + compatible = "stericsson,ab8500-btemp"; + + interrupt-names = + "BAT_CTRL_INDB", /* battery removal indicator */ + "BTEMP_LOW", /* Btemp < BtempLow, if battery temperature is lower than -10°C */ + "BTEMP_HIGH", /* BtempLow < Btemp < BtempMedium, + if battery temperature is between -10 and 0°C */ + "BTEMP_LOW_MEDIUM", /* BtempMedium < Btemp < BtempHigh, + if battery temperature is between 0°C and “MaxTemp”.*/ + "BTEMP_MEDIUM_HIGH";/* Btemp > BtempHigh, + if battery temperature is higher than “MaxTemp”. */ + + supplied-to = "ab8500_chargalg", "ab8500_fg"; + + thermister-internal-to-battery = <1>; +}; diff --git a/arch/arm/boot/dts/db8500.dtsi b/arch/arm/boot/dts/db8500.dtsi index 7279165..527fdc3 100644 --- a/arch/arm/boot/dts/db8500.dtsi +++ b/arch/arm/boot/dts/db8500.dtsi @@ -330,6 +330,23 @@ vddadc-supply = <&ab8500_ldo_tvout_reg>; }; + ab8500-btemp { + compatible = "stericsson,ab8500-btemp"; + interrupts = <20 0x04 + 80 0x04 + 81 0x04 + 82 0x04 + 83 0x04>; + interrupt-names = "BAT_CTRL_INDB", + "BTEMP_LOW", + "BTEMP_HIGH", + "BTEMP_LOW_MEDIUM", + "BTEMP_MEDIUM_HIGH"; + supplied_to = "ab8500_chargalg", "ab8500_fg"; + num_supplicants = <2>; + battery_term_on_batctrl = <1>; + }; + ab8500-usb { compatible = "stericsson,ab8500-usb"; interrupts = < 90 0x4 diff --git a/arch/arm/mach-ux500/Makefile b/arch/arm/mach-ux500/Makefile index 026086f..b474917 100644 --- a/arch/arm/mach-ux500/Makefile +++ b/arch/arm/mach-ux500/Makefile @@ -12,6 +12,8 @@ obj-$(CONFIG_MACH_MOP500) += board-mop500.o board-mop500-sdi.o \ board-mop500-uib.o board-mop500-stuib.o \ board-mop500-u8500uib.o \ board-mop500-pins.o \ - board-mop500-msp.o + board-mop500-msp.o \ + board-mop500-bm.o + obj-$(CONFIG_SMP) += platsmp.o headsmp.o obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o diff --git a/arch/arm/mach-ux500/board-mop500-bm.c b/arch/arm/mach-ux500/board-mop500-bm.c new file mode 100644 index 0000000..3349ceb --- /dev/null +++ b/arch/arm/mach-ux500/board-mop500-bm.c @@ -0,0 +1,532 @@ +/* + * Copyright (C) ST-Ericsson SA 2011 + * + * License terms: GNU General Public License (GPL), version 2 + * + * U8500 board specific charger and battery initialization parameters. + * + * Author: Johan Palsson <johan.palsson(a)stericsson.com> for ST-Ericsson. + * Author: Johan Gardsmark <johan.gardsmark(a)stericsson.com> for ST-Ericsson. + * + */ + +#include <linux/power_supply.h> +#include <linux/mfd/abx500.h> +#include <linux/mfd/abx500/ab8500-bm.h> +#include <linux/mfd/ab8500/pwmleds.h> +#include <mach/board-mop500-bm.h> + +/* + * These are the defined batteries that uses a NTC and ID resistor placed + * inside of the battery pack. + * Note that the res_to_temp table must be strictly sorted by falling resistance + * values to work. + */ +static struct abx500_res_to_temp temp_tbl_A_thermister[] = { + {-5, 53407}, + { 0, 48594}, + { 5, 43804}, + {10, 39188}, + {15, 34870}, + {20, 30933}, + {25, 27422}, + {30, 24347}, + {35, 21694}, + {40, 19431}, + {45, 17517}, + {50, 15908}, + {55, 14561}, + {60, 13437}, + {65, 12500}, +}; +static struct abx500_res_to_temp temp_tbl_B_thermister[] = { + {-5, 165418}, + { 0, 159024}, + { 5, 151921}, + {10, 144300}, + {15, 136424}, + {20, 128565}, + {25, 120978}, + {30, 113875}, + {35, 107397}, + {40, 101629}, + {45, 96592}, + {50, 92253}, + {55, 88569}, + {60, 85461}, + {65, 82869}, +}; +static struct abx500_v_to_cap cap_tbl_A_thermister[] = { + {4171, 100}, + {4114, 95}, + {4009, 83}, + {3947, 74}, + {3907, 67}, + {3863, 59}, + {3830, 56}, + {3813, 53}, + {3791, 46}, + {3771, 33}, + {3754, 25}, + {3735, 20}, + {3717, 17}, + {3681, 13}, + {3664, 8}, + {3651, 6}, + {3635, 5}, + {3560, 3}, + {3408, 1}, + {3247, 0}, +}; +static struct abx500_v_to_cap cap_tbl_B_thermister[] = { + {4161, 100}, + {4124, 98}, + {4044, 90}, + {4003, 85}, + {3966, 80}, + {3933, 75}, + {3888, 67}, + {3849, 60}, + {3813, 55}, + {3787, 47}, + {3772, 30}, + {3751, 25}, + {3718, 20}, + {3681, 16}, + {3660, 14}, + {3589, 10}, + {3546, 7}, + {3495, 4}, + {3404, 2}, + {3250, 0}, +}; + +static struct abx500_v_to_cap cap_tbl[] = { + {4186, 100}, + {4163, 99}, + {4114, 95}, + {4068, 90}, + {3990, 80}, + {3926, 70}, + {3898, 65}, + {3866, 60}, + {3833, 55}, + {3812, 50}, + {3787, 40}, + {3768, 30}, + {3747, 25}, + {3730, 20}, + {3705, 15}, + {3699, 14}, + {3684, 12}, + {3672, 9}, + {3657, 7}, + {3638, 6}, + {3556, 4}, + {3424, 2}, + {3317, 1}, + {3094, 0}, +}; + +/* + * Note that the res_to_temp table must be strictly sorted by falling + * resistance values to work. + */ +static struct abx500_res_to_temp temp_tbl[] = { + {-5, 214834}, + { 0, 162943}, + { 5, 124820}, + {10, 96520}, + {15, 75306}, + {20, 59254}, + {25, 47000}, + {30, 37566}, + {35, 30245}, + {40, 24520}, + {45, 20010}, + {50, 16432}, + {55, 13576}, + {60, 11280}, + {65, 9425}, +}; + +/* + * Note that the batres_vs_temp table must be strictly sorted by falling + * temperature values to work. + */ +static struct batres_vs_temp temp_to_batres_tbl_thermister[] = { + { 40, 120}, + { 30, 135}, + { 20, 165}, + { 10, 230}, + { 00, 325}, + {-10, 445}, + {-20, 595}, +}; + +/* + * Note that the batres_vs_temp table must be strictly sorted by falling + * temperature values to work. + */ +#ifdef CONFIG_AB8500_9100_LI_ION_BATTERY +#define BATRES 180 +#else +#define BATRES 300 +#endif +static struct batres_vs_temp temp_to_batres_tbl[] = { + { 60, BATRES}, + { 30, BATRES}, + { 20, BATRES}, + { 10, BATRES}, + { 00, BATRES}, + {-10, BATRES}, + {-20, BATRES}, +}; + +static const struct abx500_battery_type bat_type_thermister[] = { +[BATTERY_UNKNOWN] = { + /* First element always represent the UNKNOWN battery */ + .name = POWER_SUPPLY_TECHNOLOGY_UNKNOWN, + .resis_high = 0, + .resis_low = 0, + .battery_resistance = 300, +#ifdef CONFIG_AB8500_9100_LI_ION_BATTERY + .charge_full_design = 2600, +#else + .charge_full_design = 612, +#endif + .nominal_voltage = 3700, +#ifdef CONFIG_AB8500_9100_LI_ION_BATTERY + .termination_vol = 4150, +#else + .termination_vol = 4050, +#endif + .termination_curr = 200, +#ifdef CONFIG_AB8500_9100_LI_ION_BATTERY + .recharge_vol = 4130, + .normal_cur_lvl = 520, + .normal_vol_lvl = 4200, +#else + .recharge_vol = 3990, + .normal_cur_lvl = 400, + .normal_vol_lvl = 4100, +#endif + .maint_a_cur_lvl = 400, + .maint_a_vol_lvl = 4050, + .maint_a_chg_timer_h = 60, + .maint_b_cur_lvl = 400, + .maint_b_vol_lvl = 4000, + .maint_b_chg_timer_h = 200, + .low_high_cur_lvl = 300, + .low_high_vol_lvl = 4000, + .n_temp_tbl_elements = ARRAY_SIZE(temp_tbl), + .r_to_t_tbl = temp_tbl, + .n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl), + .v_to_cap_tbl = cap_tbl, + .n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl), + .batres_tbl = temp_to_batres_tbl, +}, +{ + .name = POWER_SUPPLY_TECHNOLOGY_LIPO, + .resis_high = 53407, + .resis_low = 12500, + .battery_resistance = 300, + .charge_full_design = 900, + .nominal_voltage = 3600, + .termination_vol = 4150, + .termination_curr = 80, + .recharge_vol = 4130, + .normal_cur_lvl = 700, + .normal_vol_lvl = 4200, + .maint_a_cur_lvl = 600, + .maint_a_vol_lvl = 4150, + .maint_a_chg_timer_h = 60, + .maint_b_cur_lvl = 600, + .maint_b_vol_lvl = 4100, + .maint_b_chg_timer_h = 200, + .low_high_cur_lvl = 300, + .low_high_vol_lvl = 4000, + .n_temp_tbl_elements = ARRAY_SIZE(temp_tbl_A_thermister), + .r_to_t_tbl = temp_tbl_A_thermister, + .n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl_A_thermister), + .v_to_cap_tbl = cap_tbl_A_thermister, + .n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermister), + .batres_tbl = temp_to_batres_tbl_thermister, + +}, +{ + .name = POWER_SUPPLY_TECHNOLOGY_LIPO, + .resis_high = 165418, + .resis_low = 82869, + .battery_resistance = 300, + .charge_full_design = 900, + .nominal_voltage = 3600, + .termination_vol = 4150, + .termination_curr = 80, + .recharge_vol = 4130, + .normal_cur_lvl = 700, + .normal_vol_lvl = 4200, + .maint_a_cur_lvl = 600, + .maint_a_vol_lvl = 4150, + .maint_a_chg_timer_h = 60, + .maint_b_cur_lvl = 600, + .maint_b_vol_lvl = 4100, + .maint_b_chg_timer_h = 200, + .low_high_cur_lvl = 300, + .low_high_vol_lvl = 4000, + .n_temp_tbl_elements = ARRAY_SIZE(temp_tbl_B_thermister), + .r_to_t_tbl = temp_tbl_B_thermister, + .n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl_B_thermister), + .v_to_cap_tbl = cap_tbl_B_thermister, + .n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermister), + .batres_tbl = temp_to_batres_tbl_thermister, +}, +}; + +struct abx500_battery_type bat_type_ext_thermister[] = { +[BATTERY_UNKNOWN] = { + /* First element always represent the UNKNOWN battery */ + .name = POWER_SUPPLY_TECHNOLOGY_UNKNOWN, + .resis_high = 0, + .resis_low = 0, + .battery_resistance = 300, +#ifdef CONFIG_AB8500_9100_LI_ION_BATTERY + .charge_full_design = 2600, +#else + .charge_full_design = 612, +#endif + .nominal_voltage = 3700, +#ifdef CONFIG_AB8500_9100_LI_ION_BATTERY + .termination_vol = 4150, +#else + .termination_vol = 4050, +#endif + .termination_curr = 200, +#ifdef CONFIG_AB8500_9100_LI_ION_BATTERY + .recharge_vol = 4130, + .normal_cur_lvl = 520, + .normal_vol_lvl = 4200, +#else + .recharge_vol = 3990, + .normal_cur_lvl = 400, + .normal_vol_lvl = 4100, +#endif + .maint_a_cur_lvl = 400, + .maint_a_vol_lvl = 4050, + .maint_a_chg_timer_h = 60, + .maint_b_cur_lvl = 400, + .maint_b_vol_lvl = 4000, + .maint_b_chg_timer_h = 200, + .low_high_cur_lvl = 300, + .low_high_vol_lvl = 4000, + .n_temp_tbl_elements = ARRAY_SIZE(temp_tbl), + .r_to_t_tbl = temp_tbl, + .n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl), + .v_to_cap_tbl = cap_tbl, + .n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl), + .batres_tbl = temp_to_batres_tbl, +}, +/* + * These are the batteries that doesn't have an internal NTC resistor to measure + * its temperature. The temperature in this case is measure with a NTC placed + * near the battery but on the PCB. + */ +{ + .name = POWER_SUPPLY_TECHNOLOGY_LIPO, + .resis_high = 76000, + .resis_low = 53000, + .battery_resistance = 300, + .charge_full_design = 900, + .nominal_voltage = 3700, + .termination_vol = 4150, + .termination_curr = 100, + .recharge_vol = 4130, + .normal_cur_lvl = 700, + .normal_vol_lvl = 4200, + .maint_a_cur_lvl = 600, + .maint_a_vol_lvl = 4150, + .maint_a_chg_timer_h = 60, + .maint_b_cur_lvl = 600, + .maint_b_vol_lvl = 4100, + .maint_b_chg_timer_h = 200, + .low_high_cur_lvl = 300, + .low_high_vol_lvl = 4000, + .n_temp_tbl_elements = ARRAY_SIZE(temp_tbl), + .r_to_t_tbl = temp_tbl, + .n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl), + .v_to_cap_tbl = cap_tbl, + .n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl), + .batres_tbl = temp_to_batres_tbl, +}, +{ + .name = POWER_SUPPLY_TECHNOLOGY_LION, + .resis_high = 30000, + .resis_low = 10000, + .battery_resistance = 300, + .charge_full_design = 950, + .nominal_voltage = 3700, + .termination_vol = 4150, + .termination_curr = 100, + .recharge_vol = 4130, + .normal_cur_lvl = 700, + .normal_vol_lvl = 4200, + .maint_a_cur_lvl = 600, + .maint_a_vol_lvl = 4150, + .maint_a_chg_timer_h = 60, + .maint_b_cur_lvl = 600, + .maint_b_vol_lvl = 4100, + .maint_b_chg_timer_h = 200, + .low_high_cur_lvl = 300, + .low_high_vol_lvl = 4000, + .n_temp_tbl_elements = ARRAY_SIZE(temp_tbl), + .r_to_t_tbl = temp_tbl, + .n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl), + .v_to_cap_tbl = cap_tbl, + .n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl), + .batres_tbl = temp_to_batres_tbl, +}, +{ + .name = POWER_SUPPLY_TECHNOLOGY_LION, + .resis_high = 95000, + .resis_low = 76001, + .battery_resistance = 300, + .charge_full_design = 950, + .nominal_voltage = 3700, + .termination_vol = 4150, + .termination_curr = 100, + .recharge_vol = 4130, + .normal_cur_lvl = 700, + .normal_vol_lvl = 4200, + .maint_a_cur_lvl = 600, + .maint_a_vol_lvl = 4150, + .maint_a_chg_timer_h = 60, + .maint_b_cur_lvl = 600, + .maint_b_vol_lvl = 4100, + .maint_b_chg_timer_h = 200, + .low_high_cur_lvl = 300, + .low_high_vol_lvl = 4000, + .n_temp_tbl_elements = ARRAY_SIZE(temp_tbl), + .r_to_t_tbl = temp_tbl, + .n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl), + .v_to_cap_tbl = cap_tbl, + .n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl), + .batres_tbl = temp_to_batres_tbl, +}, +}; + +static char *ab8500_charger_supplied_to[] = { + "ab8500_chargalg", + "ab8500_fg", + "ab8500_btemp", +}; + +static char *ab8500_chargalg_supplied_to[] = { + "ab8500_fg", +}; + +struct abx500_charger_platform_data ab8500_charger_plat_data = { + .supplied_to = ab8500_charger_supplied_to, + .num_supplicants = ARRAY_SIZE(ab8500_charger_supplied_to), + .autopower_cfg = false, +}; + +struct abx500_chargalg_platform_data ab8500_chargalg_plat_data = { + .supplied_to = ab8500_chargalg_supplied_to, + .num_supplicants = ARRAY_SIZE(ab8500_chargalg_supplied_to), +}; + +static struct ab8500_led_pwm leds_pwm_data[] = { + [0] = { + .pwm_id = 1, + .blink_en = 1, + }, + [1] = { + .pwm_id = 2, + .blink_en = 0, + }, + [2] = { + .pwm_id = 3, + .blink_en = 0, + }, +}; + +struct ab8500_pwmled_platform_data ab8500_pwmled_plat_data = { + .num_pwm = 3, + .leds = leds_pwm_data, +}; + +static const struct abx500_bm_capacity_levels cap_levels = { + .critical = 2, + .low = 10, + .normal = 70, + .high = 95, + .full = 100, +}; + +static const struct abx500_fg_parameters fg = { + .recovery_sleep_timer = 10, + .recovery_total_time = 100, + .init_timer = 1, + .init_discard_time = 5, + .init_total_time = 40, + .high_curr_time = 60, + .accu_charging = 30, + .accu_high_curr = 30, + .high_curr_threshold = 50, + .lowbat_threshold = 3100, + .battok_falling_th_sel0 = 2860, + .battok_raising_th_sel1 = 2860, + .user_cap_limit = 15, + .maint_thres = 97, +}; + +static const struct abx500_maxim_parameters maxi_params = { + .ena_maxi = true, + .chg_curr = 910, + .wait_cycles = 10, + .charger_curr_step = 100, +}; + +static const struct abx500_bm_charger_parameters chg = { + .usb_volt_max = 5500, + .usb_curr_max = 1500, + .ac_volt_max = 7500, + .ac_curr_max = 1500, +}; + +struct abx500_bm_data ab8500_bm_data = { + .temp_under = 3, + .temp_low = 8, + .temp_high = 43, + .temp_over = 48, + .main_safety_tmr_h = 4, + .temp_interval_chg = 20, + .temp_interval_nochg = 120, + .usb_safety_tmr_h = 4, + .bkup_bat_v = BUP_VCH_SEL_2P6V, + .bkup_bat_i = BUP_ICH_SEL_150UA, +#ifdef CONFIG_AB8500_9100_LI_ION_BATTERY + .no_maintenance = true, +#else + .no_maintenance = false, +#endif + .adc_therm = ABx500_ADC_THERM_BATCTRL, +#ifdef CONFIG_AB8500_9100_LI_ION_BATTERY + .chg_unknown_bat = true, +#else + .chg_unknown_bat = false, +#endif + .enable_overshoot = false, + .fg_res = 100, + .cap_levels = &cap_levels, + .bat_type = bat_type_thermister, + .n_btypes = 3, + .batt_id = 0, + .interval_charging = 5, + .interval_not_charging = 120, + .temp_hysteresis = 3, + .gnd_lift_resistance = 34, + .maxi = &maxi_params, + .chg_params = &chg, + .fg_params = &fg, +}; diff --git a/arch/arm/mach-ux500/include/mach/board-mop500-bm.h b/arch/arm/mach-ux500/include/mach/board-mop500-bm.h new file mode 100644 index 0000000..11c7384 --- /dev/null +++ b/arch/arm/mach-ux500/include/mach/board-mop500-bm.h @@ -0,0 +1,24 @@ +/* + * Copyright (C) ST-Ericsson SA 2011 + * + * License terms: GNU General Public License (GPL), version 2 + * + * U8500 board specific charger and battery initialization parameters. + * + * Author: Johan Palsson <johan.palsson(a)stericsson.com> for ST-Ericsson. + * Author: Johan Gardsmark <johan.gardsmark(a)stericsson.com> for ST-Ericsson. + * + */ + +#ifndef __BOARD_MOP500_BM_H +#define __BOARD_MOP500_BM_H + +#include <linux/mfd/abx500/ab8500-bm.h> + +extern struct abx500_charger_platform_data ab8500_charger_plat_data; +extern struct abx500_chargalg_platform_data ab8500_chargalg_plat_data; +extern struct abx500_bm_data ab8500_bm_data; +extern struct abx500_battery_type bat_type_ext_thermister[]; +extern struct ab8500_pwmled_platform_data ab8500_pwmled_plat_data; + +#endif diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c index 738b9c5..402f630 100644 --- a/drivers/mfd/ab8500-core.c +++ b/drivers/mfd/ab8500-core.c @@ -1046,6 +1046,7 @@ static struct mfd_cell __devinitdata ab8500_bm_devs[] = { }, { .name = "ab8500-btemp", + .of_compatible = "stericsson,ab8500-btemp", .num_resources = ARRAY_SIZE(ab8500_btemp_resources), .resources = ab8500_btemp_resources, }, diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig index e3a3b49..00dec0f 100644 --- a/drivers/power/Kconfig +++ b/drivers/power/Kconfig @@ -303,10 +303,10 @@ config AB8500_BM help Say Y to include support for AB5500 battery management. -config AB8500_BATTERY_THERM_ON_BATCTRL - bool "Thermistor connected on BATCTRL ADC" +config AB8500_9100_LI_ION_BATTERY + bool "Enable support of the 9100 Li-ion battery charging" depends on AB8500_BM help - Say Y to enable battery temperature measurements using - thermistor connected on BATCTRL ADC. + Say Y to enable support of the 9100 Li-ion battery charging. + endif # POWER_SUPPLY diff --git a/drivers/power/ab8500_btemp.c b/drivers/power/ab8500_btemp.c index bba3cca..1272bba 100644 --- a/drivers/power/ab8500_btemp.c +++ b/drivers/power/ab8500_btemp.c @@ -16,6 +16,7 @@ #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/slab.h> +#include <linux/of.h> #include <linux/platform_device.h> #include <linux/power_supply.h> #include <linux/completion.h> @@ -25,6 +26,7 @@ #include <linux/mfd/abx500/ab8500-bm.h> #include <linux/mfd/abx500/ab8500-gpadc.h> #include <linux/jiffies.h> +#include <mach/board-mop500-bm.h> #define VTVOUT_V 1800 @@ -964,11 +966,13 @@ static int __devinit ab8500_btemp_probe(struct platform_device *pdev) { int irq, i, ret = 0; u8 val; - struct abx500_bm_plat_data *plat_data = pdev->dev.platform_data; + struct device_node *np = pdev->dev.of_node; struct ab8500_btemp *di; + u32 pval; + const char *sup_val; - if (!plat_data) { - dev_err(&pdev->dev, "No platform data\n"); + if (!np) { + dev_err(&pdev->dev, "No DT node for btemp found\n"); return -EINVAL; } @@ -981,21 +985,64 @@ static int __devinit ab8500_btemp_probe(struct platform_device *pdev) di->parent = dev_get_drvdata(pdev->dev.parent); di->gpadc = ab8500_gpadc_get("ab8500-gpadc.0"); - /* get btemp specific platform data */ - di->pdata = plat_data->btemp; - if (!di->pdata) { - dev_err(di->dev, "no btemp platform data supplied\n"); + di->pdata = + kzalloc(sizeof(struct abx500_btemp_platform_data), GFP_KERNEL); + if (di->pdata == NULL) { + ret = -ENOMEM; + goto free_device_info; + } + /* get battery specific platform data */ + ret = of_property_read_u32(np, "num_supplicants", &pval); + if (ret) { + dev_err(di->dev, "missing property num_supplicants\n"); + kfree(di->pdata); + ret = -EINVAL; + goto free_device_info; + } + di->pdata->num_supplicants = pval; + di->pdata->supplied_to = + kzalloc(di->pdata->num_supplicants * + sizeof(const char *), GFP_KERNEL); + if (di->pdata->supplied_to == NULL) { + kfree(di->pdata); ret = -EINVAL; goto free_device_info; } - /* get battery specific platform data */ - di->bat = plat_data->battery; + for (val = 0; val < di->pdata->num_supplicants; ++val) + if (of_property_read_string_index + (np, "supplied_to", val, &sup_val) == 0) + *(di->pdata->supplied_to + val) = (char *)sup_val; + else { + dev_err(di->dev, "insufficient number of supplied_to data found\n"); + kfree(di->pdata); + kfree(di->pdata->supplied_to); + ret = -EINVAL; + goto free_device_info; + } + + di->bat = kzalloc(sizeof(struct abx500_bm_data), GFP_KERNEL); if (!di->bat) { - dev_err(di->dev, "no battery platform data supplied\n"); - ret = -EINVAL; + kfree(di->pdata->supplied_to); + kfree(di->pdata); + ret = -ENOMEM; goto free_device_info; } + dev_dbg(di->dev, "getting battery information\n"); + di->bat = &ab8500_bm_data; + ret = of_property_read_u32(np, "battery_term_on_batctrl", &pval); + if (ret) { + dev_err(di->dev, "missing property battery_term_on_batctrl\n"); + kfree(di->pdata->supplied_to); + kfree(di->pdata); + kfree(di->bat); + ret = -ENOMEM; + goto free_device_info; + } + if (pval == 0) { + di->bat->bat_type = bat_type_ext_thermister; + di->bat->adc_therm = ABx500_ADC_THERM_BATTEMP; + } /* BTEMP supply */ di->btemp_psy.name = "ab8500_btemp"; @@ -1008,7 +1055,6 @@ static int __devinit ab8500_btemp_probe(struct platform_device *pdev) di->btemp_psy.external_power_changed = ab8500_btemp_external_power_changed; - /* Create a work queue for the btemp */ di->btemp_wq = create_singlethread_workqueue("ab8500_btemp_wq"); @@ -1090,14 +1136,22 @@ free_irq: irq = platform_get_irq_byname(pdev, ab8500_btemp_irq[i].name); free_irq(irq, di); } + free_btemp_wq: destroy_workqueue(di->btemp_wq); + free_device_info: kfree(di); return ret; } +static const struct of_device_id ab8500_btemp_match[] = { + {.compatible = "stericsson,ab8500-btemp",}, + {}, +}; + + static struct platform_driver ab8500_btemp_driver = { .probe = ab8500_btemp_probe, .remove = __devexit_p(ab8500_btemp_remove), @@ -1106,6 +1160,7 @@ static struct platform_driver ab8500_btemp_driver = { .driver = { .name = "ab8500-btemp", .owner = THIS_MODULE, + .of_match_table = ab8500_btemp_match, }, }; diff --git a/include/linux/mfd/ab8500/pwmleds.h b/include/linux/mfd/ab8500/pwmleds.h new file mode 100644 index 0000000..e316582 --- /dev/null +++ b/include/linux/mfd/ab8500/pwmleds.h @@ -0,0 +1,20 @@ +/* + * Copyright ST-Ericsson 2012. + * + * Author: Naga Radhesh <naga.radheshy(a)stericsson.com> + * Licensed under GPLv2. + */ +#ifndef _AB8500_PWMLED_H +#define _AB8500_PWMLED_H + +struct ab8500_led_pwm { + int pwm_id; + int blink_en; +}; + +struct ab8500_pwmled_platform_data { + int num_pwm; + struct ab8500_led_pwm *leds; +}; + +#endif -- 1.7.9.5

13 years, 6 months

What is the purpose of the kernel_build subdirectory in the Linaro kernel source?

by David Cullen

Hello, linaro-dev, I just created a TAGS file for the Linaro kernel source and I noticed that there is a "kernel_build" subdirectory: /home/work/linux-linaro-lt-omap-3.4-3.4.0/kernel_build What is the purpose of this directory? When I run "make ARCH=arm TAGS", it includes the source in this directory, so it appears that all files are tagged twice. -- Thank you, David Cullen

13 years, 6 months

[PATCH 1/4] acpi: intel_idle : break dependency between modules

by Daniel Lezcano

When the system is booted with some cpus offline, the idle driver is not initialized. When a cpu is set online, the acpi code call the intel idle init function. Unfortunately this code introduce a dependency between intel_idle and acpi. This patch is intended to remove this dependency by using the notifier of intel_idle. This patch has the benefit of encapsulating the intel_idle driver and remove some exported functions. Signed-off-by: Daniel Lezcano <daniel.lezcano(a)linaro.org> Acked-by: Srivatsa S. Bhat <srivatsa.bhat(a)linux.vnet.ibm.com> Acked-by: Rafael J. Wysocki <rjw(a)sisk.pl> --- drivers/acpi/processor_driver.c | 7 ------ drivers/idle/intel_idle.c | 41 +++++++++++++++++++++++++------------- include/linux/cpuidle.h | 7 ------ 3 files changed, 27 insertions(+), 28 deletions(-) diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c index 13103aeb..7048b97 100644 --- a/drivers/acpi/processor_driver.c +++ b/drivers/acpi/processor_driver.c @@ -429,18 +429,11 @@ static int acpi_cpu_soft_notify(struct notifier_block *nfb, * Initialize missing things */ if (pr->flags.need_hotplug_init) { - struct cpuidle_driver *idle_driver = - cpuidle_get_driver(); - printk(KERN_INFO "Will online and init hotplugged " "CPU: %d\n", pr->id); WARN(acpi_processor_start(pr), "Failed to start CPU:" " %d\n", pr->id); pr->flags.need_hotplug_init = 0; - if (idle_driver && !strcmp(idle_driver->name, - "intel_idle")) { - intel_idle_cpu_init(pr->id); - } /* Normal CPU soft online event */ } else { acpi_processor_ppc_has_changed(pr, 0); diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c index d0f59c3..fe95d54 100644 --- a/drivers/idle/intel_idle.c +++ b/drivers/idle/intel_idle.c @@ -96,6 +96,7 @@ static const struct idle_cpu *icpu; static struct cpuidle_device __percpu *intel_idle_cpuidle_devices; static int intel_idle(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index); +static int intel_idle_cpu_init(int cpu); static struct cpuidle_state *cpuidle_state_table; @@ -302,22 +303,35 @@ static void __setup_broadcast_timer(void *arg) clockevents_notify(reason, &cpu); } -static int setup_broadcast_cpuhp_notify(struct notifier_block *n, - unsigned long action, void *hcpu) +static int cpu_hotplug_notify(struct notifier_block *n, + unsigned long action, void *hcpu) { int hotcpu = (unsigned long)hcpu; + struct cpuidle_device *dev; switch (action & 0xf) { case CPU_ONLINE: - smp_call_function_single(hotcpu, __setup_broadcast_timer, - (void *)true, 1); + + if (lapic_timer_reliable_states != LAPIC_TIMER_ALWAYS_RELIABLE) + smp_call_function_single(hotcpu, __setup_broadcast_timer, + (void *)true, 1); + + /* + * Some systems can hotplug a cpu at runtime after + * the kernel has booted, we have to initialize the + * driver in this case + */ + dev = per_cpu_ptr(intel_idle_cpuidle_devices, hotcpu); + if (!dev->registered) + intel_idle_cpu_init(hotcpu); + break; } return NOTIFY_OK; } -static struct notifier_block setup_broadcast_notifier = { - .notifier_call = setup_broadcast_cpuhp_notify, +static struct notifier_block cpu_hotplug_notifier = { + .notifier_call = cpu_hotplug_notify, }; static void auto_demotion_disable(void *dummy) @@ -405,10 +419,10 @@ static int intel_idle_probe(void) if (boot_cpu_has(X86_FEATURE_ARAT)) /* Always Reliable APIC Timer */ lapic_timer_reliable_states = LAPIC_TIMER_ALWAYS_RELIABLE; - else { + else on_each_cpu(__setup_broadcast_timer, (void *)true, 1); - register_cpu_notifier(&setup_broadcast_notifier); - } + + register_cpu_notifier(&cpu_hotplug_notifier); pr_debug(PREFIX "v" INTEL_IDLE_VERSION " model 0x%X\n", boot_cpu_data.x86_model); @@ -494,7 +508,7 @@ static int intel_idle_cpuidle_driver_init(void) * allocate, initialize, register cpuidle_devices * @cpu: cpu/core to initialize */ -int intel_idle_cpu_init(int cpu) +static int intel_idle_cpu_init(int cpu) { int cstate; struct cpuidle_device *dev; @@ -539,7 +553,6 @@ int intel_idle_cpu_init(int cpu) return 0; } -EXPORT_SYMBOL_GPL(intel_idle_cpu_init); static int __init intel_idle_init(void) { @@ -581,10 +594,10 @@ static void __exit intel_idle_exit(void) intel_idle_cpuidle_devices_uninit(); cpuidle_unregister_driver(&intel_idle_driver); - if (lapic_timer_reliable_states != LAPIC_TIMER_ALWAYS_RELIABLE) { + + if (lapic_timer_reliable_states != LAPIC_TIMER_ALWAYS_RELIABLE) on_each_cpu(__setup_broadcast_timer, (void *)false, 1); - unregister_cpu_notifier(&setup_broadcast_notifier); - } + unregister_cpu_notifier(&cpu_hotplug_notifier); return; } diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index 8684a0d..a6b3f2e 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -207,14 +207,7 @@ struct cpuidle_governor { extern int cpuidle_register_governor(struct cpuidle_governor *gov); extern void cpuidle_unregister_governor(struct cpuidle_governor *gov); -#ifdef CONFIG_INTEL_IDLE -extern int intel_idle_cpu_init(int cpu); #else -static inline int intel_idle_cpu_init(int cpu) { return -1; } -#endif - -#else -static inline int intel_idle_cpu_init(int cpu) { return -1; } static inline int cpuidle_register_governor(struct cpuidle_governor *gov) {return 0;} -- 1.7.5.4

13 years, 6 months

Problem building Precise Ubuntu Desktop

by David Cullen

Hello, linaro-dev, I am trying to follow the instructions at https://wiki.linaro.org/Source/ImageBuilding However, when I run "sudo lh build", I get the following output > P: Setting up cleanup function > P: Begin caching bootstrap stage... > P: Begin bootstrapping system... > P: If the following stage fails, the most likely cause of the problem is with your mirror configuration or a caching proxy. > P: Running debootstrap (download-only)... > I: Retrieving Release > E: Failed getting release file http://ftp.de.debian.org/debian/dists/lenny/Release > P: Begin unmounting filesystems... Why is it trying to download files for lenny? -- Thank you, David Cullen

13 years, 6 months

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