linaro-dev March 2011

linaro-dev@lists.linaro.org

123 participants
172 discussions

[powerdebug 01/35] change regulator init function

by Daniel Lezcano

Move the corresponding function to the right header file and rename the function with <subsystem>_function_name. Signed-off-by: Daniel Lezcano <daniel.lezcano(a)free.fr> --- powerdebug.c | 3 ++- powerdebug.h | 1 - regulator.c | 2 +- regulator.h | 2 +- 4 files changed, 4 insertions(+), 4 deletions(-) diff --git a/powerdebug.c b/powerdebug.c index 2f0992b..fa26e77 100644 --- a/powerdebug.c +++ b/powerdebug.c @@ -15,6 +15,7 @@ #include <getopt.h> #include <stdbool.h> +#include "regulator.h" #include "powerdebug.h" int highlighted_row; @@ -352,7 +353,7 @@ int main(int argc, char **argv) return 1; } - if (init_regulator_ds()) + if (regulator_init()) return 1; if (mainloop(options)) diff --git a/powerdebug.h b/powerdebug.h index cef5570..42add86 100644 --- a/powerdebug.h +++ b/powerdebug.h @@ -32,7 +32,6 @@ extern struct regulator_info *regulators_info; extern int numregulators; -extern int init_regulator_ds(void); extern void print_regulator_info(int verbose); extern void read_regulator_info(void); extern void print_regulator_info(int verbose); diff --git a/regulator.c b/regulator.c index 18c9777..395571b 100644 --- a/regulator.c +++ b/regulator.c @@ -15,7 +15,7 @@ #include "regulator.h" -int init_regulator_ds(void) +int regulator_init(void) { DIR *regdir; struct dirent *item; diff --git a/regulator.h b/regulator.h index 3ecf6b8..b6780ab 100644 --- a/regulator.h +++ b/regulator.h @@ -40,4 +40,4 @@ struct regulator_info { int num_users; } *regulators_info; -extern int numregulators; +extern int regulator_init(void); -- 1.7.1

14 years, 2 months

[PATCH V1] ARM: Samsung: Basic CPUIDLE Support

by Amit Daniel Kachhap

This patch supports cpuidle framework for EXYNOS4210. Currently, Only one idle state is possible to use, but more idle states can be added following by this patch. Signed-off-by: Jaecheol Lee <jc.lee(a)samsung.com> Signed-off-by: Amit Daniel Kachhap <amit.kachhap(a)linaro.org> --- FIX: Fixed the merging issue reported by Nicolas Pitre <nicolas.pitre(a)linaro.org> Sending the rebased patch for linaro 2.6.38 kernel. This patch adds basic cpuidle infrastructure and fixes the launchpad bug(bug id: 723543). This patch is under review in samsung mailing list. http://www.spinics.net/lists/linux-samsung-soc/msg04268.html arch/arm/mach-exynos4/Makefile | 1 + arch/arm/mach-exynos4/cpuidle.c | 87 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 88 insertions(+), 0 deletions(-) create mode 100644 arch/arm/mach-exynos4/cpuidle.c diff --git a/arch/arm/mach-exynos4/Makefile b/arch/arm/mach-exynos4/Makefile index b8f0e7d..f8a3a74 100644 --- a/arch/arm/mach-exynos4/Makefile +++ b/arch/arm/mach-exynos4/Makefile @@ -16,6 +16,7 @@ obj-$(CONFIG_CPU_EXYNOS4210) += cpu.o init.o clock.o irq-combiner.o obj-$(CONFIG_CPU_EXYNOS4210) += setup-i2c0.o gpiolib.o irq-eint.o dma.o obj-$(CONFIG_PM) += pm.o sleep.o obj-$(CONFIG_CPU_FREQ) += cpufreq.o +obj-$(CONFIG_CPU_IDLE) += cpuidle.o obj-$(CONFIG_SMP) += platsmp.o headsmp.o diff --git a/arch/arm/mach-exynos4/cpuidle.c b/arch/arm/mach-exynos4/cpuidle.c new file mode 100644 index 0000000..a543a18 --- /dev/null +++ b/arch/arm/mach-exynos4/cpuidle.c @@ -0,0 +1,87 @@ +/* linux/arch/arm/mach-exynos4/cpuidle.c + * + * Copyright (c) 2011 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/cpuidle.h> +#include <linux/io.h> + +#include <asm/proc-fns.h> + +static int exynos4_enter_idle(struct cpuidle_device *dev, + struct cpuidle_state *state); + +static struct cpuidle_state exynos4_cpuidle_set[] = { + [0] = { + .enter = exynos4_enter_idle, + .exit_latency = 1, + .target_residency = 100000, + .flags = CPUIDLE_FLAG_TIME_VALID, + .name = "IDLE", + .desc = "ARM clock gating(WFI)", + }, +}; + +static DEFINE_PER_CPU(struct cpuidle_device, exynos4_cpuidle_device); + +static struct cpuidle_driver exynos4_idle_driver = { + .name = "exynos4_idle", + .owner = THIS_MODULE, +}; + +static int exynos4_enter_idle(struct cpuidle_device *dev, + struct cpuidle_state *state) +{ + struct timeval before, after; + int idle_time; + + local_irq_disable(); + do_gettimeofday(&before); + + cpu_do_idle(); + + do_gettimeofday(&after); + local_irq_enable(); + idle_time = (after.tv_sec - before.tv_sec) * USEC_PER_SEC + + (after.tv_usec - before.tv_usec); + + return idle_time; +} + +static int __init exynos4_init_cpuidle(void) +{ + int i, max_cpuidle_state, cpu_id; + struct cpuidle_device *device; + + cpuidle_register_driver(&exynos4_idle_driver); + + for_each_cpu(cpu_id, cpu_online_mask) { + device = &per_cpu(exynos4_cpuidle_device, cpu_id); + device->cpu = cpu_id; + + device->state_count = (sizeof(exynos4_cpuidle_set) / + sizeof(struct cpuidle_state)); + + max_cpuidle_state = device->state_count; + + for (i = 0; i < max_cpuidle_state; i++) { + memcpy(&device->states[i], &exynos4_cpuidle_set[i], + sizeof(struct cpuidle_state)); + } + + if (cpuidle_register_device(device)) { + printk(KERN_ERR "CPUidle register device failed\n,"); + return -EIO; + } + } + return 0; +} + +device_initcall(exynos4_init_cpuidle); -- 1.7.1

14 years, 2 months

[PATCH] net/fec: fix compile error introduced by dt support

by Shawn Guo

After fec dt support is added, the following compile error will be seen when building a pure non-dt kernel. drivers/net/fec.c: In function ‘fec_probe’: drivers/net/fec.c:1383: error: implicit declaration of function ‘of_match_device’ drivers/net/fec.c:1383: warning: assignment makes pointer from integer without a cast This patch is to fix the error. Signed-off-by: Shawn Guo <shawn.guo(a)linaro.org> --- drivers/net/fec.c | 13 ++++++++++++- 1 files changed, 12 insertions(+), 1 deletions(-) diff --git a/drivers/net/fec.c b/drivers/net/fec.c index b57f879..ffb1e75 100644 --- a/drivers/net/fec.c +++ b/drivers/net/fec.c @@ -85,8 +85,19 @@ static const struct of_device_id fec_dt_ids[] = { { .compatible = "fsl,imx51-fec", .data = &fec_devtype[0], }, {}, }; + +static const struct of_device_id * +fec_get_of_device_id(struct platform_device *pdev) +{ + return of_match_device(fec_dt_ids, &pdev->dev); +} #else #define fec_dt_ids NULL +static inline struct of_device_id * +fec_get_of_device_id(struct platform_device *pdev) +{ + return NULL; +} #endif static unsigned char macaddr[ETH_ALEN]; @@ -1380,7 +1391,7 @@ fec_probe(struct platform_device *pdev) struct resource *r; const struct of_device_id *of_id; - of_id = of_match_device(fec_dt_ids, &pdev->dev); + of_id = fec_get_of_device_id(pdev); if (of_id) pdev->id_entry = (struct platform_device_id *)of_id->data; -- 1.7.1

14 years, 2 months

USB issues on OMAP3 (beagle/overo) with latest linaro-2.6.38 tree

by john stultz

Hey Nico, So I've been seeing USB issues on my beagle xm board with the latest linaro-2.6.38 tree, where when the system boots, lsusb will only show the hubs, but no devices. Andy reported seeing similar on his overo board, so I bisected the issue down to: 9e64bb1e9f0613093b3e34ac5402fcfef0dcc35a is the first bad commit commit 9e64bb1e9f0613093b3e34ac5402fcfef0dcc35a Author: Keshava Munegowda <keshava_mgowda(a)ti.com> Date: Tue Mar 1 20:08:19 2011 +0530 arm: omap: usb: Invoke usbhs core device initialization The usbhs intialization is invoked by all omap3 and omap4 variant board files. Signed-off-by: Keshava Munegowda <keshava_mgowda(a)ti.com> Signed-off-by: Felipe Balbi <balbi(a)ti.com> It looks like this patch is just converting the initialization over to usbhs, so it doesn't really point out the specific issue, but it does seem that something in the usbhs core isn't working properly. Any tips here? thanks -john The full bisect log is: git bisect start # good: [47dc59f22a6af00691a98975d05a8a1601714e1b] OMAP4: PandaBoard: remove unused power regulators git bisect good 47dc59f22a6af00691a98975d05a8a1601714e1b # bad: [8061f3a885ec3538bf405ff3957c205b1ab2aae4] mach-ux500: correct MMC/SDI parameters git bisect bad 8061f3a885ec3538bf405ff3957c205b1ab2aae4 # bad: [1c49cb09b5666aa0d6df3b58f6c621df92c5dd44] Merge commit '05f6894' (omap-for-linus) into linaro-2.6.38 git bisect bad 1c49cb09b5666aa0d6df3b58f6c621df92c5dd44 # bad: [0cd3fd78e5951c1631ee60a2026603d63c671d98] Merge commit '9ced9f0' (rmk/devel-stable) into linaro-2.6.38 git bisect bad 0cd3fd78e5951c1631ee60a2026603d63c671d98 # bad: [23e0d1066f429ab44305e96fbff13f1793886277] usb: Refactor irq enabling out of usb_add_hcd() git bisect bad 23e0d1066f429ab44305e96fbff13f1793886277 # good: [c9642374d0e969e8c17f4f31cd1a2bd111634227] USB: fix unsafe USB_SS_MAX_STREAMS() definition git bisect good c9642374d0e969e8c17f4f31cd1a2bd111634227 # bad: [45d1b7ae205e39e95ec65747f8871661aaa105e4] usb-gadget: fix warning in ethernet git bisect bad 45d1b7ae205e39e95ec65747f8871661aaa105e4 # good: [37db3af11f02c2ccdf44a788694da16062a0333c] usb: otg: TWL4030: Update the last_event variable. git bisect good 37db3af11f02c2ccdf44a788694da16062a0333c # good: [181b250cf53233a7a7c6d7e1e9df402506712e93] arm: omap: usb: create common enums and structures for ehci and ohci git bisect good 181b250cf53233a7a7c6d7e1e9df402506712e93 # bad: [19403165c272cc4ed00c97973e7271714b009708] usb: host: omap: ehci and ohci simplification git bisect bad 19403165c272cc4ed00c97973e7271714b009708 # good: [2236396d4d23828a0875a4d447103d0ab48aed0b] arm: omap: usb: usbhs core device initialization git bisect good 2236396d4d23828a0875a4d447103d0ab48aed0b # bad: [3b68ae73d8afa925807ebaae7eb14e2afd43f5b5] arm: omap: usb: cleanup ehci and ohci resources and devices git bisect bad 3b68ae73d8afa925807ebaae7eb14e2afd43f5b5 # bad: [9e64bb1e9f0613093b3e34ac5402fcfef0dcc35a] arm: omap: usb: Invoke usbhs core device initialization git bisect bad 9e64bb1e9f0613093b3e34ac5402fcfef0dcc35a

14 years, 3 months

Add packaging of .dtb files

by Shawn Guo

On Mon, Mar 21, 2011 at 03:25:16AM -0600, Grant Likely wrote: > - Add packaging of .dtb files into linux-image-linaro-* packages. > Loic and I discussed putting them under /lib/dtb/`uname -r`/, but > thinking about it more, it might make more sense to share the modules > directory and use /lib/modules/`uname -r`/dtbs. The dtc tool needed As the .dtb files will be naturally generated in the same kernel folder as kernel image sits, why do not we ship .dtb in the same folder as kernel image /boot? > to build the .dtbs is included with the kernel tree. > - Add relevant dtb files to boot partition in linaro-image tools The .dtb files will be generated and shipped with unique name, which comes from .dts file name. But I intend to use the generic name, maybe something like board.dtb along with l-m-c, just like we use zImage and u-boot for all platforms in boot partition, so that l-m-c does not need to encode platform specific dtb filename. Thoughts? -- Regards, Shawn

14 years, 3 months

New blog engine (WordPress!) and Planet Linaro

by Michael Opdenacker

Greetings, We are pleased to announce that we now have a new blog engine (WordPress, so much better than the previous one), and also a Planet Linaro RSS aggregator. See http://www.linaro.org/linaro-blog/2011/03/31/wordpress-planet-linaro/ for details. Many thanks to Ian Davenport for the blog upgrade and to James Westby and Canonical IS for Planet Linaro. Your comments and suggestions are most welcome, as these have just been put on line. Cheers, Michael. -- Michael Opdenacker - Community Manager Linaro, http://linaro.org Cell: +33 621 604 642 IRC: 'opm' in #linaro on irc.freenode.net

14 years, 3 months

Linaro 11.05 Beta Ubuntu images released

by Jamie Bennett

Hi, Linaro is pleased to announce that the 11.05 Beta Ubuntu images are now available to download. After much blood, sweat and tears we now have a total of 10 different boards supported (in our own unique hardware pack and board-neutral rootfs architecture) along with a more focused 4 different images to try out including the much coveted Ubuntu Unity interface on the Ubuntu Desktop image. This is in addition to the small nano image, the tools rich Developer image and the ARM Internet Platform (ALIP) image. A 2.6.38 kernel, state-of-the-art Linaro toolchain and a whole host of ARM-related improvements make for a thrilling release. What are you waiting for, go download it now! As always, if you have supported hardware, as found on: http://releases.linaro.org/platform/linaro-n/hwpacks/beta/ please help our initiative by testing the official Linaro Evaluation Build (LEB): Ubuntu Desktop: http://releases.linaro.org/platform/linaro-n/ubuntu-desktop/beta/ and our Developer images: Nano: http://releases.linaro.org/platform/linaro-n/nano/beta/ ALIP: http://releases.linaro.org/platform/linaro-n/alip/beta/ Developer Tools: http://releases.linaro.org/platform/linaro-n/developer/beta/ As a side note, hwpacks that have an -lt- in their name are outputs from the Linaro Landing teams, using some of their components. Make your way to: http://wiki.linaro.org/Releases/MilestoneBuilds for an explanation on how to test and submit your results to the QA tracker at: http://qatracker.linaro.org For an explanation of how to use the qatracker please see: https://wiki.linaro.org/QA/QATracker Regards, Jamie. -- Linaro Release Manager | Platform Project Manager

14 years, 3 months

[PATCH v2 0/6] add full platform dt clock support for mx51 babbage

by Shawn Guo

This patch set is to add full platform dt clock support for mx51 babbage, based on Grant's devicetree/test tree. All mx51 non-dt clocks in clock-mx51-mx53.c are translated to dt ones. Regards, Shawn Changes since v1: * unify the references to clocks that could be created statically and dynamically, so that we do not have to duplicate functions * use for_each_matching_node suggested by Grant to match clock creating functions * reserve 'data' of device_node structure and use new one 'clk' * change macro ALLOC_CLK_LOOKUP and ADD_CLK_LOOKUP to functions * fix codes that will break existing board support * use clock provider 'src-clock' and 'dep-clock' * fix up aips and spba node name to remove address info (suggestion given by Grant on Jason's patch) Shawn Guo (6): arm/dts: babbage: add all available clock nodes arm/mxc: add clk member 'rate' to ease dt fixed-clock support dt: add new member 'clk' into device_node arm/dt: mx51: dynamically add clocks per dt nodes arm/dt: mx5: change timer init function to dt clock way of/clock: eliminate function __of_clk_get_from_provider arch/arm/boot/dts/babbage.dts | 501 +++++++++++- arch/arm/mach-mx5/Makefile | 2 +- arch/arm/mach-mx5/board-dt.c | 9 +- arch/arm/mach-mx5/clock-dt.c | 52 -- arch/arm/mach-mx5/clock-mx51-mx53.c | 1433 +++++++++++++++++++++++++++++++- arch/arm/plat-mxc/include/mach/clock.h | 4 + drivers/of/clock.c | 23 +- include/linux/of.h | 1 + 8 files changed, 1913 insertions(+), 112 deletions(-)

14 years, 3 months

help: Overo Problem with CONFIG_SMP=y and mpurate

by Andy Doan

I have an Overo Tide that is capable of running at 720Mhz. It defaults to 600Mhz, but the mpurate kernel command line argument allows it to overridden. The problem is that Linaro kernels (with the Linaro .config) always show 499.92 BogoMIPS in /proc/cpuinfo regardless of what I pass as the mpurate. I've discovered that by disabling CONFIG_SMP (Linaro defaults this to 'y') the problem goes away. I'm not sure how to go about fixing this, but its been noticed by the Gumstix mailing list that Linaro builds for Overo seem sluggish. Does anyone have any ideas what might cause this, or any ideas where I might start looking? FYI - the LP bug is: 739582 thanks, -andy

14 years, 3 months

[PM] 31/03/2011 - Minutes for the Power Management WG weekly call

by Amit Kucheria

Hi All, The minutes of the power management weekly call can be found at : https://wiki.linaro.org/WorkingGroups/PowerManagement/Meetings/2011-03-31 Highlights: 11.11 planning: results of discussions with TSC Regards, Amit

14 years, 3 months

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linaro-dev March 2011