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Change 996M setpoint voltage according to datasheet,
lower VDDARM_CAP from 1.275V to 1.25V, and VDDSOC/PU_CAP
from 1.275V to 1.175V.
Signed-off-by: Anson Huang <b20788@freescale.com>
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The kernel panic happen when normal memory is exhausted but high memory is available,
The fix is to disable oom-killer in normal alloc_pages, oom-killer will be triggered when normal and highmem zones are exhausted.
Signed-off-by: Xianzhong <b07117@freescale.com>
Acked-by: Lily Zhang
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The killer only work when force contiguous memory allocation fail,the work routinue:
1. register task free callback
2. force contiguous lowmem shrink
1> initialize min_adj to 0, kill itself in case other process cannot be killed
2> polling all process and find the available process(higher oom_adj, higher gpu memory)
3> select the best available process and send SIGKILL to kill it
3. try to allocate force contiguous memory again
4. unregister task free and exit shrinking state when memory is ready
Signed-off-by: Xianzhong <b07117@freescale.com>
Acked-by: Lily Zhang
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remove the wake up flag for VOL_DOWN and VOL_UP keys for sabresd B4 and
above board.
Signed-off-by: Lin Fuzhen <fuzhen.lin@freescale.com>
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When system bootup without HDMI plugin, the default modelist
and default video mode will create.
Match default video mode in default CEA modelist, make sure
default video mode is a CEA mode.
Signed-off-by: Sandor Yu <R01008@freescale.com>
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There is a USB hang issue when do system suspend/resume test with a USB
device plug in. The issue is caused by USB host driver accessing register
when clock is off. Currently set HCD_FLAG_HW_ACCESSIBLE bit before open
clock in ehci_fsl_bus_resume, it cause accessing register without clock.
So we should change the code call order to avoid driver access register
without clock.
- Set HCD_FLAG_HW_ACCESSIBLE software flag after HW clock turn on
- remove some unnecessary code in ehci_fsl_pre_irq
Signed-off-by: make shi <b15407@freescale.com>
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To adjust the channel support capability, codec dai does not support mono
playback and record, while esai dai does, thus making the whole audio
codec only support stereo and above channel playback/record.
Signed-off-by: Lionel Xu <R63889@freescale.com>
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We must set the DMA mask for esdhc device.
To avoid the following crash when we do not have highmem pages:
[<c0044f90>] (__dabt_svc+0x70/0xa0) from [<c00cf460>]
[<c00cf460>] (mempool_alloc+0x3c/0x108) from [<c00f4aa4>]
[<c00f4aa4>] (blk_queue_bounce+0xc0/0x2fc) from [<c023761c>]
[<c023761c>] (__make_request+0x20/0x2b8) from [<c0235bb4>]
[<c0235bb4>] (generic_make_request+0x3b4/0x4cc) from [<c0235d74>]
[<c0235d74>] (submit_bio+0xa8/0x128) from [<c01279c4>]
[<c01279c4>] (submit_bh+0x108/0x178) from [<c012baa0>]
[<c012baa0>] (block_read_full_pag+e0x278/0x394) from [<c00cd520>]
[<c00cd520>] (do_read_cache_page+0x70/0x154) from [<c00cd64c>]
[<c00cd64c>] (read_cache_page_async+0x1c/0x24) from [<c00cd65c>]
[<c00cd65c>] (read_cache_page+0x8/0x10) from [<c014c354>]
[<c014c354>] (read_dev_sector+0x30/0x68) from [<c014dd4c>]
[<c014dd4c>] (read_lba+0xa0/0x164) from [<c014e300>]
[<c014e300>] (efi_partition+0x9c/0xed4) from [<c014ca0c>]
[<c014ca0c>] (rescan_partitions+0x15c/0x480) from [<c012f190>]
[<c012f190>] (__blkdev_get+0x324/0x394) from [<c012f300>]
[<c012f300>] (blkdev_get+0x100/0x358) from [<c023e5f4>]
[<c023e5f4>] (register_disk+0x140/0x164) from [<c023e73c>]
[<c023e73c>] (add_disk+0x124/0x2a0) from [<c03a7528>]
[<c03a7528>] (mmc_add_disk+0x10/0x68) from [<c03a7820>]
[<c03a7820>] (mmc_blk_probe+0x15c/0x20c) from [<c039cc90>]
[<c039cc90>] (mmc_bus_probe+0x18/0x1c) from [<c0294e28>]
When our DDR size is small or reserved memory are large and
the lowmem can cover all the available pages for kernel,
the highmem pages will not be setup. That means the page_pool
for bounce queue can not be create in init_emergency_pool().
And page_pool will stay NULL without initialized.
In the mmc/card/queue.c the blk_queue_bounce_limit()
function will be called in mmc_init_queue() to
initialize the request_queue and it's bounce_gfp.
If we do not define the DMA mask for our platform,
then the BLK_BOUNCE_HIGH (lowmem pfn) will be set
as limit to queue bounce, which means the blk_queue_bounce
will use page_pool to iterate over the bio segment.
Under the circumstances that highmem is not setup,
the page_pool is null, and causes kernel crash.
After set the DMA mask for esdhci device, the page_pool
will not be used to iterate over the bio segment.
Signed-off-by: Xinyu Chen <xinyu.chen@freescale.com>
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Previous setting of PUPSCR is 0x202, which means there is only ~63us
for LDO ramp up, sometimes, system fail to resume by USB remote wake up,
increase this timing to fix USB remote wake up issue.
Signed-off-by: Anson Huang <b20788@freescale.com>
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The log from [MX6DL/S_SD]:
...
mxc_sdc_fb mxc_sdc_fb.1: register mxc display driver ldb
dmaengine: failed to get dma1chan0: (-22)
dmaengine: failed to get dma1chan1: (-22)
dmaengine: failed to get dma1chan2: (-22)
dmaengine: failed to get dma1chan3: (-22)
dmaengine: failed to get dma1chan4: (-22)
dmaengine: failed to get dma1chan5: (-22)
dmaengine: failed to get dma1chan6: (-22)
dmaengine: failed to get dma1chan7: (-22)
dmaengine: failed to get dma1chan8: (-22)
dmaengine: failed to get dma1chan9: (-22)
dmaengine: failed to get dma1chan10: (-22)
dmaengine: failed to get dma1chan11: (-22)
dmaengine: failed to get dma1chan12: (-22)
dmaengine: failed to get dma1chan13: (-22)
dmaengine: failed to get dma1chan14: (-22)
dmaengine: failed to get dma1chan15: (-22)
...
It happens when there are many DMA-engine drivers in the system and
dmaengine_get() is called. dmaengine_get() will call dma_chan_get(), which will
call device_alloc_chan_resources() literally on channels of available dma
drivers unless reach -ENODEV. device_alloc_chan_resources() is implemented
in the individual dma drivers, which could return -EINVAL rather than -ENODEV,
then the above messages print out (doesn't hurt, however).
Indeed, the dmaengine_get() and dmaengine_put() is not needed and thus removed.
Signed-off-by: Robby Cai <R63905@freescale.com>
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Conflicts:
drivers/mxc/vpu/mxc_vpu.c
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We must set the DMA mask for esdhc device.
To avoid the following crash when we do not have highmem pages:
[<c0044f90>] (__dabt_svc+0x70/0xa0) from [<c00cf460>]
[<c00cf460>] (mempool_alloc+0x3c/0x108) from [<c00f4aa4>]
[<c00f4aa4>] (blk_queue_bounce+0xc0/0x2fc) from [<c023761c>]
[<c023761c>] (__make_request+0x20/0x2b8) from [<c0235bb4>
[<c0235bb4>] (generic_make_request+0x3b4/0x4cc) from [<c0235d74>]
[<c0235d74>] (submit_bio+0xa8/0x128) from [<c01279c4>]
[<c01279c4>] (submit_bh+0x108/0x178) from [<c012baa0>]
[<c012baa0>] (block_read_full_pag+e0x278/0x394) from [<c00cd520>]
[<c00cd520>] (do_read_cache_page+0x70/0x154) from [<c00cd64c>]
[<c00cd64c>] (read_cache_page_async+0x1c/0x24) from [<c00cd65c>]
[<c00cd65c>] (read_cache_page+0x8/0x10) from [<c014c354>]
[<c014c354>] (read_dev_sector+0x30/0x68) from [<c014dd4c>]
[<c014dd4c>] (read_lba+0xa0/0x164) from [<c014e300>]
[<c014e300>] (efi_partition+0x9c/0xed4) from [<c014ca0c>]
[<c014ca0c>] (rescan_partitions+0x15c/0x480) from [<c012f190>]
[<c012f190>] (__blkdev_get+0x324/0x394) from [<c012f300>]
[<c012f300>] (blkdev_get+0x100/0x358) from [<c023e5f4>]
[<c023e5f4>] (register_disk+0x140/0x164) from [<c023e73c>]
[<c023e73c>] (add_disk+0x124/0x2a0) from [<c03a7528>]
[<c03a7528>] (mmc_add_disk+0x10/0x68) from [<c03a7820>]
[<c03a7820>] (mmc_blk_probe+0x15c/0x20c) from [<c039cc90>]
[<c039cc90>] (mmc_bus_probe+0x18/0x1c) from [<c0294e28>]
When our DDR size is small or reserved memory are large and
the lowmem can cover all the available pages for kernel,
the highmem pages will not be setup. That means the page_pool
for bounce queue can not be create in init_emergency_pool().
And page_pool will stay NULL without initialized.
In the mmc/card/queue.c the blk_queue_bounce_limit()
function will be called in mmc_init_queue() to
initialize the request_queue and it's bounce_gfp.
If we do not define the DMA mask for our platform,
then the BLK_BOUNCE_HIGH (lowmem pfn) will be set
as limit to queue bounce, which means the blk_queue_bounce
will use page_pool to iterate over the bio segment.
Under the circumstances that highmem is not setup,
the page_pool is null, and causes kernel crash.
After set the DMA mask for esdhci device, the page_pool
will not be used to iterate over the bio segment.
Signed-off-by: Xinyu Chen <xinyu.chen@freescale.com>
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1. Fix ENGR00230203 [Android_MX6DL_SD] Gallery: System hang
after resume from suspend during video playback. 20%
2. Fix ENGR00231830 [MX6DL/S_SD] VPU: VPU encode can't
finish and print "VPU blocking: timeout." if suspend/resume. 100%
Signed-off-by: Hongzhang Yang <Hongzhang.Yang@freescale.com>
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1. Revert ENGR00231910 Do not disable PU regulator,revert the PU
regulator patch;
2. VPU reset register address is different on MX6 and MX5. It can
fix ENGR00230203 [Android_MX6DL_SD] Gallery: System hang after resume
from suspend during video playback. 20%
Signed-off-by: Hongzhang Yang <Hongzhang.Yang@freescale.com>
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When the kernel parses the following cmdline
#mtdparts=gpmi-nand:16m(boot),16m(kernel),1g(home),4g(test),-(usr)
for a big nand chip Micron MT29F64G08AFAAAWP(8GB), we got the following wrong
result:
.............................................
"mtd: partition size too small (0)"
.............................................
We can not get any partition.
The "4g(test)" partition triggers a overflow of the "size". The memparse()
returns 4g to the "size", but the size is "unsigned long" type, so a overflow
occurs, the "size" becomes zero in the end.
This patch changes the "size"/"offset" to "unsigned long long" type,
and replaces the UINT_MAX with ULLONG_MAX for macros SIZE_REMAINING and
OFFSET_CONTINUOUS.
Signed-off-by: Huang Shijie <b32955@freescale.com>
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With onfi a flash is organized into one or more logical units (LUNs).
A" logical unit (LUN) is the minimum unit that can independently execute
commands and report status.
Mtd does not exploit LUN, so make it see a big single flash where size is
lun_size * number_of_lun.
Without this patch MT29F8G08ADBDAH4 size is 512MiB instead of 1GiB.
Artem: split long line on 2 shorter ones.
Signed-off-by: Matthieu Castet <matthieu.castet@parrot.com>
Acked-by: Florian Fainelli <ffainelli@freebox.fr>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Huang Shijie <b32955@freescale.com>
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there is a bug in nand_flash_detect_onfi, busw need to be passed
by pointer to return it.
Signed-off-by: Matthieu CASTET <matthieu.castet@parrot.com>
Acked-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
Signed-off-by: Huang Shijie <b32955@freescale.com>
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If system enter suspend/resume during VPU encoding on Rigel, there will be
"VPU blocking: timeout." error . But there is ok if enter suspend/resume
during VPU decoding and enter suspend/resume during encoding/decoding on
Arik, until now we didn't know the root cause, so revert it firstly.
Because the previous patch about PU regulator is composed with four commits
and hard to revert, now we adopt simplest way that do not disable PU regulator
in low level. The negative impact is there will several mA increasment in
suspend, we will fix it ASAP.
Signed-off-by: Robin Gong <b38343@freescale.com>
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Revert "ENGR00224245 HDMI AUDIO: stop/start PCM while unplug,blank/plug,unblank"
This reverts commit f8dd4f6fea093e46a30d5e438baa33702f626372.
This patch is for pulse audio. which is not fit for Android.
Signed-off-by: b02247 <b02247@freescale.com>
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Revert "ENGR00219882 wm8962: avoid the digital volume changed by user"
This reverts commit 18079ec20d80ecccf8279c70c9e67b6ebf8b3f22.
Digital volume will be used by the DSP of wm8962 to scale the input digital
signal. Main branch remove this mixer control, but set the default value
exceed 0dB, which will cause noise when the signal has maximum amplitude.
Move this control back, then the user space can set this value by itself.
Signed-off-by: b02247 <b02247@freescale.com>
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Make VPU driver only recover the reg and running state only VPU being used
Signed-off-by: guoyin.chen <guoyin.chen@freescale.com>
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add clk operation in mxc_pb_spdif_put function
Signed-off-by: Gary Zhang <b13634@freescale.com>
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SD card card detection and NFC controller CS2 share
the same pin on ARD platform. However CS2 is not
connected to the socket. This signal was removed
from the sabreauto board file.
Signed-off-by: Alejandro Sierra <b18039@freescale.com>
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The sdhci async mmc coomand support will batch too much write command,
it will cause the thread call sync() become very slow, it will cause
the sqlite operation become very slow.
This patch will improve the latency of sqlite operation a lot,
one test case, without this patch, the async() will wait for 6 write command,
and with this patch, it only wait for one write command, in a slow SD card,
the different will be 3000ms vs 500ms.
Since this async() function not improve performance a lot for fast card(eMMC),
but it will affect too much for slow card like TF card, remove this function.
Signed-off-by: Zhang Jiejing <jiejing.zhang@freescale.com>
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1. correct indent issue
2. when driver is unloaded, remove disable clock operateion and free irq
Signed-off-by: Gary Zhang <b13634@freescale.com>
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not set wm8958 codec as builtin in imx6_defconfig
Signed-off-by: Gary Zhang <b13634@freescale.com>
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Implement set_suspend_voltage for buck switch of PF100, and set_suspend_enable
/set_suspend_disable interface for LDO(VGENx).
Signed-off-by: Robin Gong <b38343@freescale.com>
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There is 6% tolerance for PFM momde in standby so we need set 0.975V(>0.9V+%6)
for VDDSOC and VDDARM which maybe impact system resume ability.
Another two change is:
1.set VDDARM and VDDSOC standby voltage by setting PFUZE register directly,it
is not very friendly.So use more common "state_mem" in constrain of regulator
to set standby voltage.
2.align sabreauto code with sabresd
Signed-off-by: Robin Gong <b38343@freescale.com>
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In mx6q arm2 board, the gpmi conflicts with SD module.
But the defconfig has enabled the gpmi by default.
So we have to add a kernel cmdline to enable the gpmi by hand in arm2 board.
Signed-off-by: Huang Shijie <b32955@freescale.com>
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Add scaling_available_freqs attribute in cpufreq for i.MX
can get cpufreq table info with:
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
996000 792000 396000
Signed-off-by: Lin Fuzhen <fuzhen.lin@freescale.com>
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Add scaling_available_freqs attribute in cpufreq for i.MX
can get cpufreq table info with:
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
996000 792000 396000
Signed-off-by: Lin Fuzhen <fuzhen.lin@freescale.com>
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SDP boards layout have board's width aligne with LVDS's height
Update the mma8451 and mag3110's config to algin with SDP board
Signed-off-by: guoyin.chen <guoyin.chen@freescale.com>
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The USB FS eye test will fail in MX6 board if the 3V USB phy LDO is not enabled.
Setting enable bit (bit-0) of LDO 3p0 will make 3p0 LDO to use bandgap output as
reference voltage, LDO output will be accurate. And HW team suggest that it is
better to raise the voltage of USB 3p0 phy LDO 3.2V to pass the USB compliance
testing.
- Implement vdd3p0 regulator enable and disable function to support
enable and disable the LDO 3p0 regulator.
- Use regulator API to enable the USB 3p0 phy LDO and raise the LDO
to 3.2V during system boot up. And disable the LDO before system
enter suspend and enable the LDO again after system resume.
Signed-off-by: make shi <b15407@freescale.com>
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Fix bug: IPU IC resize ratio overflow when downsizing large resolution frame
using split mode, for example downsize 4080x2720 frame into 1920x1080 frame.
Otherwise, the downsized frame is wrong.
Signed-off-by: Wayne Zou <b36644@freescale.com>
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This reverts commit 60bad509d7060775a370d70e843ab12f6b50c5c5.
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This reverts commit c672fadbfe66e900048fcc04d6252fb842414433.
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This reverts commit 515c4d4486a167a7741bcae804cbb357bc0d7fc1.
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There was a mpr121_touchkey.c driver already upstream,
the orignall driver by 2.6.35 kernel development
should be removed to avoid duplicate.
This reverts commit 3d6df22ad54a14bc8cebb7753c36f7b3cd811665.
Signed-off-by: Zhang Jiejing <jiejing.zhang@freescale.com>
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Export symbol in HDMI core driver to support HDMI AUDIO codec driver's
loadable module build.
Signed-off-by: Chen Liangjun <b36089@freescale.com>
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Export gloable variable in HDMI AUDIO platform driver to support HDMI
AUDIO codec driver's loadable build.
Signed-off-by: Chen Liangjun <b36089@freescale.com>
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HDMI driver can be divided into 3 parts: machine driver, platform
driver, codec driver.To support HDMI AUDIO loadable module build, HDMI
machine driver should be built as loadable.
In this patch, adjust HDMI audio driver's struct: move HDMI audio platform
driver to snd-soc-imx-objs(snd-soc-imx-objs would always be
build-in).In this case, user need only build HDMI AUDIO machine driver
as loadable.
Signed-off-by: Chen Liangjun <b36089@freescale.com>
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imx_3.0.35_android_r13.4.y
Conflicts:
arch/arm/configs/imx6s_updater_defconfig
arch/arm/include/asm/hardware/coresight.h
arch/arm/kernel/etm.c
arch/arm/mach-mx6/board-mx6q_sabresd.c
arch/arm/mach-mx6/cpu_op-mx6.c
arch/arm/mach-mx6/mx6_suspend.S
arch/arm/mach-mx6/mx6sl_wfi.S
arch/arm/mach-mx6/pm.c
arch/arm/mach-mx6/system.c
arch/arm/plat-mxc/cpufreq.c
drivers/media/video/mxc/capture/ov5640_mipi.c
drivers/mfd/mxc-hdmi-core.c
drivers/mmc/host/sdhci.c
drivers/mxc/gpu-viv/hal/os/linux/kernel/gc_hal_kernel_driver.c
drivers/power/sabresd_battery.c
drivers/video/mxc/mxc_ipuv3_fb.c
include/linux/mfd/mxc-hdmi-core.h
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This is needed sanity check, because on Ubuntu it's likely that low memory
will happen. This patch also makes this memory allocated from dma zone.
Signed-off-by: Robby Cai <R63905@freescale.com>
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The settings in the PXP_PS_BUF, PXP_OUT_PS_ULC, and PXP_OUT_PS_LRC will
determine the subset of the PS buffer, or clipped PS source buffer, that
will be used in the output buffer.
HW_PXP_OUT_PS_LRC should set the scaled output size rather than the origin
size when scaling.
Please refer to the "Clipping source images" section in RM for how it works.
Signed-off-by: Robby Cai <R63905@freescale.com>
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A small logic bug prevents the init sequence from properly turning
off the clocks. This leads to the clocks being always on
if the first update does not complete due to the screen being blanked.
Signed-off-by: Michael Minnick <michael.minnick@freescale.com>
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Only enable power gating for PXP and EPDC. The feature for ELCDIF still need to
be verified.
Signed-off-by: Robby Cai <R63905@freescale.com>
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Add dependency on CONFIG_FB_MXC_ELCDIF_FB, to avoid build error if as module.
Signed-off-by: Robby Cai <R63905@freescale.com>
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This is needed when build sii902x hdmi driver as module
Signed-off-by: Robby Cai <R63905@freescale.com>
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This can be detected by enabling CONFIG_LOCKDEP and CONFIG_PROVE_LOCKING
The dump log:
=============================================
[ INFO: possible recursive locking detected ]
3.0.35-02140-gb4181ce-dirty #959
---------------------------------------------
swapper/1 is trying to acquire lock:
((fb_notifier_list).rwsem){.+.+.+}, at: [<80088758>] __blocking_notifier_call_chain+0x44/0x88
but task is already holding lock:
((fb_notifier_list).rwsem){.+.+.+}, at: [<80088758>] __blocking_notifier_call_chain+0x44/0x88
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock((fb_notifier_list).rwsem);
lock((fb_notifier_list).rwsem);
*** DEADLOCK ***
May be due to missing lock nesting notation
5 locks held by swapper/1:
#0: (&__lockdep_no_validate__){+.+.+.}, at: [<8027f244>] __driver_attach+0x48/0x98
#1: (&__lockdep_no_validate__){+.+.+.}, at: [<8027f254>] __driver_attach+0x58/0x98
#2: (registration_lock){+.+.+.}, at: [<8023a17c>] register_framebuffer+0x18/0x24c
#3: (&fb_info->lock){+.+.+.}, at: [<80238dc8>] lock_fb_info+0x18/0x3c
#4: ((fb_notifier_list).rwsem){.+.+.+}, at: [<80088758>] __blocking_notifier_call_chain+0x44/0x88
stack backtrace:
[<800405c4>] (unwind_backtrace+0x0/0xf8) from [<80097c78>] (__lock_acquire+0x1644/0x1c18)
[<80097c78>] (__lock_acquire+0x1644/0x1c18) from [<80098748>] (lock_acquire+0x84/0x98)
[<80098748>] (lock_acquire+0x84/0x98) from [<804d0aa8>] (down_read+0x34/0x44)
[<804d0aa8>] (down_read+0x34/0x44) from [<80088758>] (__blocking_notifier_call_chain+0x44/0x88)
[<80088758>] (__blocking_notifier_call_chain+0x44/0x88) from [<800887b4>] (blocking_notifier_call_chain+0x18/0x20)
[<800887b4>] (blocking_notifier_call_chain+0x18/0x20) from [<802397e0>] (fb_set_var+0x264/0x290)
[<802397e0>] (fb_set_var+0x264/0x290) from [<8024a320>] (lcd_init_fb+0x54/0x70)
[<8024a320>] (lcd_init_fb+0x54/0x70) from [<8024a3f0>] (lcd_fb_event+0x44/0xb4)
[<8024a3f0>] (lcd_fb_event+0x44/0xb4) from [<80088514>] (notifier_call_chain.isra.1+0x74/0xd0)
[<80088514>] (notifier_call_chain.isra.1+0x74/0xd0) from [<80088774>] (__blocking_notifier_call_chain+0x60/0x88)
[<80088774>] (__blocking_notifier_call_chain+0x60/0x88) from [<800887b4>] (blocking_notifier_call_chain+0x18/0x20)
[<800887b4>] (blocking_notifier_call_chain+0x18/0x20) from [<8023a2d4>] (register_framebuffer+0x170/0x24c)
[<8023a2d4>] (register_framebuffer+0x170/0x24c) from [<8024fe8c>] (mxc_elcdif_fb_probe+0x464/0x564)
[<8024fe8c>] (mxc_elcdif_fb_probe+0x464/0x564) from [<8028031c>] (platform_drv_probe+0x18/0x1c)
[<8028031c>] (platform_drv_probe+0x18/0x1c) from [<8027f0f0>] (driver_probe_device+0x90/0x19c)
[<8027f0f0>] (driver_probe_device+0x90/0x19c) from [<8027f290>] (__driver_attach+0x94/0x98)
[<8027f290>] (__driver_attach+0x94/0x98) from [<8027e2e4>] (bus_for_each_dev+0x5c/0x88)
[<8027e2e4>] (bus_for_each_dev+0x5c/0x88) from [<8027eabc>] (bus_add_driver+0x188/0x250)
[<8027eabc>] (bus_add_driver+0x188/0x250) from [<8027f750>] (driver_register+0x78/0x13c)
[<8027f750>] (driver_register+0x78/0x13c) from [<8001c838>] (mxc_elcdif_fb_init+0x38/0x48)
[<8001c838>] (mxc_elcdif_fb_init+0x38/0x48) from [<80035334>] (do_one_initcall+0x34/0x178)
[<80035334>] (do_one_initcall+0x34/0x178) from [<80008968>] (kernel_init+0x84/0x124)
[<80008968>] (kernel_init+0x84/0x124) from [<8003b614>] (kernel_thread_exit+0x0/0x8)
In fact, we don't need support dynamically switch the framebuffer.
so, we only need do once registeration in probe function.
Signed-off-by: Robby Cai <R63905@freescale.com>
Acked-by: Lily Zhang
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