Hi, all
New status of linux-loongson-community for Gdium:
Sensors, Backlight, Function/Hotkey, AC/battery drivers work with
arch/mips/configs/gdium_small_defconfig, but sound and pm/suspend
still not work.
1. Sensors
lm75 driver must be enabled as y or m, then you can use 'sensors'
command to get the board(or cpu? not sure) temperature.
2. Backlight
pwm_backlight common driver(CONFIG_BACKLIGHT_PWM) must be enabled as y
or m, then you can use kpowersave or gnome-power-manager to change the
backlight, or you can use the interface
/sys/class/backlight/pwm-backlight/brightness directly.
3. Function/Hotkey drivers(include hid-gdium and gdium_laptop)
All of the Fn key should work now(except the ones for the volume/mute changing).
CONFIG_HID_GDIUM and CONFIG_GDIUM_LAPTOP must be enabled as y or m.
With the help of function key, you can change the backlight via Fn+F8/F9.
More function key maps are defined as follows:
drivers/hid/hid-gdium.c:
{ KEY_F1, KEY_CAMERA },
{ KEY_F2, KEY_CONNECT },
{ KEY_F3, KEY_MUTE },
{ KEY_F4, KEY_VOLUMEUP},
{ KEY_F5, KEY_VOLUMEDOWN },
{ KEY_F6, KEY_SWITCHVIDEOMODE },
{ KEY_F7, KEY_F19 }, /* F7+12. Have to use existant keycodes */
{ KEY_F8, KEY_BRIGHTNESSUP },
{ KEY_F9, KEY_BRIGHTNESSDOWN },
{ KEY_F10, KEY_SLEEP },
{ KEY_F11, KEY_PROG1 },
{ KEY_F12, KEY_PROG2 },
{ KEY_UP, KEY_PAGEUP },
{ KEY_DOWN, KEY_PAGEDOWN },
{ KEY_INSERT, KEY_NUMLOCK },
{ KEY_DELETE, KEY_SCROLLLOCK },
{ KEY_T, KEY_STOPCD },
{ KEY_F, KEY_PREVIOUSSONG },
{ KEY_H, KEY_NEXTSONG },
{ KEY_G, KEY_PLAYPAUSE },
4. AC/Battery driver
gdium_laptop also provides a AC/battery driver, which can be used to
monitor the AC/Battery working status, but the battery driver need to
be improved to provide the information of
POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW and
POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, I have done some statistic on the
time to empty and full, will get a formula for it later.
-------------
BTW:
1. I have no time to work on the left sound and pm drivers in the next
2 or 3 months, so, If you folks have interest or time, welcome your
patches, thanks in advance.
2. Some notes to forward-port the sound and pm drivers:
2.1. sound driver
may need to port the following three patches:
SM501 ASoC driver // You can search these patches after issuing
"git log", the same to the following ones
gdium_sound_fixes.patch
GB36_sm502_mfd_rewrite.patch
from
git://git.opensde.net/users/amery/linux-2.6.29-gdium
But simply copy them from the above git repo to our git repo will not
work for the mainline has changed some sound APIs, please refer to the
"ASoC: multi-component - ASoC Multi-Component Support" commit of the
mainline and the other implementations under sound/soc/
2.2 pm/suspend driver
may need to port "stl2_suspend2.patch" from
git://git.opensde.net/users/amery/linux-2.6.29-gdium, but please check
the potential conflict between it and the mainline:
arch/mips/loongson/common/pm.c, arch/mips/power/
And to enable the cpufreq driver support for Gdium, the sm501-pwm
based external timer should be enabled, therefore, we may need to port
"gdium_clock.patch", to make it work normally with cpufreq, its
oneshot mode must be fixed at first.
Best Regards,
Wu Zhangjin
On Tue, Nov 9, 2010 at 1:08 PM, wu zhangjin <[email protected]> wrote:
> Hi, mengqian & all
>
> Sorry for my late response.
>
> Based on the previous work of Arnaud Patard[1] and Yajin[2], just
> finished a basic 2.6.37 support(pci, irq, reset, video) for Gdium and
> pushed it into our master branch[3], two default config files has been
> added:
>
> arch/mips/configs/gdium_{minimal,small}_defconfig
>
> The minimal one is prepared for the rescue/recover system, the small
> one can be used for desktop or development.
>
> With anyone of the above config files, the kernel is bootable, the
> later enabled more supports(wireless), if you need more drivers,
> please refer to arch/mips/configs/lemote2f_defconfig.
>
> To boot the kernel, you may need to install the modules into the
> board's /lib/modules and copy the vmlinuz or vmlinux to the board's
> /boot, and then, config the pmon(bootloader) environment variables and
> boot with the new kernel:
>
> 1. Enter into the PMON commandline
>
> power on your board, and press the 'C' key till you get the following prompt.
>
> PMON>
>
> 2. Set the path to the kernel image in the "al" environment variable
>
> // take a look at the existing environment variables
> PMON> env
> // or take a look at an indicated environment variable: al
> PMON> env al
> // backup the old al
> PMON> set old_al $al
> // set the new al, assume your kernel image(vmlinuz-2.6.37) is put at
> the 2nd partition of your usb storage
> PMON> set al /dev/fs/e...@usbg0/boot/vmlinuz-2.6.37
>
> 3. Set the kernel command line parameters in "karg"
>
> PMON> env karg
> PMON> set old_karg $karg
> // Assume your root filesystem is at the 2nd partition of your usb storage
> PMON> set kargs "console=tty1 root=/dev/sda2 rootwait init=/sbin/finit-mdv"
>
> 4. Load & Boot
>
> // Load the kernel image
> PMON> load $al
> // Boot it
> PMON> g $karg
>
> If you want to load a kernel image from the tftp server, please enable
> the network connection via the bootloader at first.
>
> PMON> devls
> ...
> rtl0
> PMON> set ifconfig rtl0:<local_ip_addresss> // for example: set
> ifconfig rtl0:192.168.0.131
> PMON> load tftp://<tftp_server_ip_address>/path/to/tftpboot/vmlinuz
> ....
>
> To get more information about gdium, PMON and the available systems on
> it, please refer to [4].
>
> More efforts are needed to forward-port the following supports from
> 2.6.29[3] to 2.6.37:
>
> The EC support(hotkey, battery ...) from
> drivers/platform/mips/gdium-laptop.c (seems no big change)
> The sm501 based sound support from sound/soc/sm501 (may need enough
> effort for the mainline has changed a lot)
> The pm support(mainly "suspend to RAM") from
> arch/mips/lemote/lm2f/*pm* (stl2_suspend2.patch, this may be hard too
> but should be easy for basic pm support, the Hibernation should be
> usable currently.)
>
> Currently, I have no schedule to work on them, but I hope they may be
> available one by one in the coming 3 ~ 6 weeks, which means 2.6.37 in
> our linux-loongson-community git repository.
>
> Best Regards,
> Wu Zhangjin
> ------
> [1] git://git.opensde.net/users/amery/linux-2.6.29-gdium
> [2] http://repo.or.cz/w/linux-2.6/linux-mips/linux-gdium.git (2.6.35-rc2)
> [3] http://dev.lemote.com/code/linux-loongson-community
> [4] More
> [4.1] FAQ
> http://www.gdium.com/en/support/faq
> [4.2] How to Install Debian Lenny on Gdium
> http://vm-kernel.org/blog/2009/03/20/how-to-install-debian-lenny-on-gdium/
> [4.3] PMON
> http://olph.gdium.com/wiki/doku.php/system:pmon
>
> On Wed, Oct 20, 2010 at 7:34 PM, 包孟謙 <[email protected]> wrote:
>> This is a question mainly for Gdium owners, but all input is welcome.
>>
>> Did anyone successfully manage to (compile and) run a more recent
>> kernel thatn 2.6.29... (from Mandriva's G-linux) on his/her Gdium?
>>
>> Even if proper support for audio and hotkeys is not ported, I am
>> considering compiling a kernel from newer sources so I could update
>> udev, include Huawei K3765 support, etc.
>>
>> In theory, I believe, the Yeelong sources should be compatible (except
>> for the Gdium specific hotkeys, audio). The Gdium lacks the VIA
>> southbridge but I do not think that should be a problem.
>>
>> Does anyone have any experience with experimenting with "Yeelong"
>> kernels on the Gdium?
>>
>> Please let me know.
>>
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>>
>
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