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This is a replacement for Atheros' HIF layer that uses the Linux SDIO
stack.
Using GPLv2, like Atheros' code this is based on.
Work in progress.
Not-Yet-Signed-off-by: Werner Almesberger <werner@openmoko.org>
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After killing the Atheros SDIO stack, we shall no longer deny ourselves
the pleasure of also getting rid of the glue that keeps it on the
platform.
Not-Yet-Signed-off-by: Werner Almesberger <werner@openmoko.org>
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Make the AR6000 WLAN driver compile after moving it outside the
Atheros SDIO stack. Note that the config option's name changes
as well.
The choice of a non-standard location (drivers/ar6000/) is
intentional. The driver is still very far from being in shape for
mainline inclusion, and the odd location should serve as an
immediate warning.
Not-Yet-Signed-off-by: Werner Almesberger <werner@openmoko.org>
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Signed-off-by: Andy Green <andy@openmoko.com>
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I've noticed some pretty poor behavior on OLPC machines after bootup, when
gdm/X are starting. The GCD monopolizes the scheduler (which in turns means
it gets to do more nand i/o), which results in processes taking much much
longer than they should to start.
As an example, on an OLPC machine going from OFW to a usable X (via auto-login
gdm) takes 2m 30s. The majority of this time is consumed by the switch into
graphical mode. With this patch, we cut a full 60s off of bootup time. After
bootup, things are much snappier as well.
Note that we have seen a CRC node error with this patch that causes the machine
to fail to boot, but we've also seen that problem without this patch.
Signed-off-by: Andres Salomon <dilinger@debian.org>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Ben Dooks wrote:
> My only comment would be
> that a slightly better solution would be to do:
Oh, that's much better, thanks ! I hadn't realized at first that
once could read the FIFO one byte at a time.
The revised patch is below.
- Werner
---------------------------------- cut here -----------------------------------
fix-s3c-nand-read-bytes.patch
With the introduction of optimized OOB reads in nand_read_subpage,
the length of the data requested may not be a multiple of four bytes.
This caused a partial read on the 2440, leading to false ECC errors
and, worse, attempts to "correct" them.
Note that there is a similar issue in s3c2440_nand_write_buf, which
doesn't seem to cause trouble yet.
Signed-off-by: Werner Almesberger <werner@openmoko.org>
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Subject: [PATCH] glamofb: Initialize only visible part of the memory.
It takes lots of time (0.5 seconds) to initialize the whole memory. As
only the visible part matters, we could just initialize that part.
Signed-off-by: Chia-I Wu <olv@openmoko.com>
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christer-mmc-byte-alignment.patch reduced the FIFO I/O granularity
from words to bytes. This also includes the decision when the FIFO
is empty or full.
However, we sometimes only want to transfer full words, in which
case do_pio_read/do_pio_write busy-loop until the FIFO has filled
up or drained enough.
In the case of do_pio_write, this can cause an endless loop if the
amount of data exceeds the FIFO size, because do_pio_write runs
before the transfer is initiated, so the FIFO never drains.
Signed-off-by: Werner Almesberger <werner@openmoko.org>
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Add fake GPIO I2C bus so we can start config with pcf50633 before
real 6410 I2C bus driver is ready
Enable pcf50633 and current APM emulation to get it going (will be
deprecated shortly hopefully).
Signed-off-by: Andy Green <andy@openmoko.com>
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Use the same code for bringup during initialization and when switching
the module on/off through sysfs.
This also solves the problem of not resetting the WLAN module, which
was caused by fix-set-wlan-power-mgt-to-default-on.patch only partially
reverting the power-off default introduced with
introduce-gta02-pm-wlan.patch.
Signed-off-by: Werner Almesberger <werner@openmoko.org>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Make the load address within RAM, rather than a memory mapped
register. (Fix a copy-and-paste error.)
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Signed-off-by: Andy Green <andy@openmoko.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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> of passing i2c information into the wm8753 driver... it handles that
> action now. Maybe that's what trashes up the PMU registration / bus
> attach stuff for PMU.
>
> Anyway that is why I removed wm8753 i2c registration from mach-gta02.c,
> it's now done in the gta02 wm8753 driver.
Ah, sorry for not noticing it. So we can remove the i2c_board_info
altogether from mach-gta02.c.
Signed-off-by: Balaji Rao <balajirrao@openmoko.org>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Without this the backlight remains stubbornly down on resume
Signed-off-by: Andy Green <andy@openmoko.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Minimal set of kernel changes to support Android operation.
Note arch/arm/configs/gta02-android-defconfig
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Signed-off-by: Andy Green <andy@openmoko.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Try to make sure about no compiler malarky by volatile. Change hdq busy
detect. Change error handling path in hdq interface to fiq.
Signed-off-by: Sean McNeil <sean@mcneil.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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This large patch removes motion sensor from Linux SPI bitbang driver.
Previously, some access was done through Linux SPI protected
by a mutex, and the ISR access was done by platform bitbang code due
to inability of Linux SPI driver to work in the interrupt context.
Now all access is done by bitbang callbacks in mach_gta02.c and are
protected by single scheme of interrupt lockout for the duration --
I line-by-line'd the driver to confirm that best I could, adding
protection and taking more care on several /sys related paths.
Because this is no longer a Linux SPI bus driver, the path for various
/sys things have changed. They can now be found down, eg,
/sys/devices/platform/lis302dl.1/sample_rate
lis302dl.1 is the top sensor and .2 the bottom. The names of the input
susbsytem paths remain the same as before.
Not working in interrupt context made trouble using interrupt lockout as
locking
[21474615.495000] BUG: sleeping function called from invalid context at kernel/sched.c:4684
[21474615.495000] in_atomic():0, irqs_disabled():128
[21474615.495000] 2 locks held by bash/779:
[21474615.495000] #0: (&buffer->mutex){....}, at: [<c00ec1b0>] sysfs_write_file+0x30/0x80
[21474615.495000] #1: (pm_mutex){....}, at: [<c007a34c>] enter_state+0xd4/0x10c
[21474615.495000] [<c0032a14>] (dump_stack+0x0/0x14) from [<c0049410>] (__might_sleep+0xdc/0xf8)
[21474615.495000] [<c0049334>] (__might_sleep+0x0/0xf8) from [<c0316c38>] (wait_for_common+0x28/0x190)
[21474615.495000] r5:c79ffd00 r4:c79ffd4c
[21474615.495000] [<c0316c10>] (wait_for_common+0x0/0x190) from [<c0316e30>] (wait_for_completion+0x18/0x1c)
[21474615.495000] r8:c79ffd84 r7:c79c4800 r6:c79ffd00 r5:c79ffd20 r4:c79ffd4c
[21474615.495000] [<c0316e18>] (wait_for_completion+0x0/0x1c) from [<c01d28ec>] (spi_sync+0xa0/0xb8)
[21474615.495000] [<c01d284c>] (spi_sync+0x0/0xb8) from [<c020ca10>] (__reg_write+0x88/0x94)
[21474615.495000] [<c020c988>] (__reg_write+0x0/0x94) from [<c020cc30>] (lis302dl_resume+0x54/0x198)
[21474615.495000] r6:60000013 r5:c79c4800 r4:c79bc9c0
[21474615.495000] [<c020cbdc>] (lis302dl_resume+0x0/0x198) from [<c01d2fb0>] (spi_resume+0x38/0x44)
[21474615.495000] r6:00000010 r5:c79c4800 r4:c79c4974
[21474615.495000] [<c01d2f78>] (spi_resume+0x0/0x44) from [<c0198f34>] (resume_device+0x8c/0x1b0)
[21474615.495000] [<c0198ea8>] (resume_device+0x0/0x1b0) from [<c01990c0>] (dpm_resume+0x68/0x134)
[21474615.495000] r7:00000003 r6:00000010 r5:c79c4800 r4:c79c4974
[21474615.495000] [<c0199058>] (dpm_resume+0x0/0x134) from [<c01991b4>] (device_resume+0x28/0x38)
[21474615.495000] r6:00000003 r5:c08b7188 r4:00000010
[21474615.495000] [<c019918c>] (device_resume+0x0/0x38) from [<c007a0f8>] (suspend_devices_and_enter+0x110/0x180)
[21474615.495000] r4:00000000
[21474615.495000] [<c0079fe8>] (suspend_devices_and_enter+0x0/0x180) from [<c007a320>] (enter_state+0xa8/0x10c)
[21474615.495000] r6:00000003 r5:c03aa414 r4:00000000
[21474615.495000] [<c007a278>] (enter_state+0x0/0x10c) from [<c007a430>] (state_store+0xac/0xc0)
[21474615.495000] r6:c7b80000 r5:00000003 r4:c03aa414
[21474615.495000] [<c007a384>] (state_store+0x0/0xc0) from [<c014dfb4>] (kobj_attr_store+0x24/0x30)
[21474615.495000] [<c014df90>] (kobj_attr_store+0x0/0x30) from [<c00ebe58>] (flush_write_buffer+0x54/0x68)
[21474615.495000] [<c00ebe04>] (flush_write_buffer+0x0/0x68) from [<c00ec1d8>] (sysfs_write_file+0x58/0x80)
[21474615.495000] r8:c7acca80 r7:c79fff78 r6:000be408 r5:00000004 r4:c7a19ea0
[21474615.495000] [<c00ec180>] (sysfs_write_file+0x0/0x80) from [<c00a91b8>] (vfs_write+0xbc/0x14c)
[21474615.495000] [<c00a90fc>] (vfs_write+0x0/0x14c) from [<c00a9774>] (sys_write+0x4c/0x7c)
[21474615.495000] r7:00000004 r6:00000000 r5:00000000 r4:c7acca80
[21474615.495000] [<c00a9728>] (sys_write+0x0/0x7c) from [<c002dc20>] (ret_fast_syscall+0x0/0x2c)
Signed-off-by: Andy Green <andy@openmoko.com>
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Signed-off-by: Andy Green <andy@openmoko.com>
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Last rebase to stable-2.6.26 left some trash from rebasing the patches on top of this,
clean it back out
Signed-off-by: Andy Green <andy@openmoko.com>
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We're using /boot for kernel now
Signed-off-by: Andy Green <andy@openmoko.com>
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