ENGR00170141: Fix debug messages generated by CPUFREQ
When dvfs-core is enabled along with "debug" in command line, CPUFREQ
printed too many debug messages.
Fix this by changing the threshold settings for DVFS-CORE and
make the transitions more conservative and infrequent.
Also use the CPUFREQ debug flag.
Xinyu Chen [Tue, 13 Dec 2011 07:29:59 +0000 (15:29 +0800)]
ENGR00170145-1 ipuv3: add resource for overlay fb buffer reservation
We have already had framebuffer reservation for BG display
by set the base/size resource in fb platform data.
But we may also have FG fb buffer reserve requirement.
So add addtional base/size resource in fb plaform data,
add a IORESROUCE_MEM resource when fb device register
to meet such requirement.
Xinyu Chen [Fri, 9 Dec 2011 06:47:57 +0000 (14:47 +0800)]
ENGR00169891 v4l2 capture: avoid streamon with only one buffer queued
If user space only queue one buffer into ready list, and
call streamon, camera csi enc ISR will crash.
Since for CSI ENC, the ping pong buffer is initilized without
checking ready buffer on streamon.
The second buffer will be wrongly in cam_data struct, and causes
DMA fill buffers into cam_data global variable.
Here just add one sanity check for ready buffer.
ENGR00163052: CPUFREQ does not report correct frequency
When DVFS_CORE is enabled, the following command reports incorrect frequency:
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq
Fix this by ensuring the CPUFREQ does not change the frequency
when DVFS_CORE is active. And DVFS-CORE informs CPUFREQ of the
change done to CPU frequency.
Tony LIU [Wed, 7 Dec 2011 05:31:35 +0000 (13:31 +0800)]
ENGR00169661:Remove the discharge for VBUS and DP
- VBUS discharge code should be removed from suspend_irq function
- On Arik, there is a huge capacitance(C86), even discharge VBUS,
the Drop of VBUS is still very slow
- On Arik, the B session valid threshold is not 0.8V or 1.4V, it is
about 2V~3V, so we can receive B session valid interrupt very soon
- No DP discharge needed, but wait for SE0 is needed Signed-off-by: Tony LIU <junjie.liu@freescale.com>
Wayne Zou [Thu, 1 Dec 2011 11:52:39 +0000 (19:52 +0800)]
ENGR00163669-1 mxc fb: remove FB_EVENT_PREMODE_CHANGE for mxc fb drivers
remove FB_EVENT_PREMODE_CHANGE for mxc ldb/tve drivers
add dispdrv setup interface for ldb/tve drivers
re-structure the dispdrv framework for display devices
Xinyu Chen [Fri, 2 Dec 2011 06:38:21 +0000 (14:38 +0800)]
ENGR00163703 uart: console write routing is unsafe on SMP
The console feature's write routing is unsafe on SMP with
the startup/shutdown call. It happend to cause Android bootup
without shell runnable.
Actually on Android boot, there's 3 consumers of the console
* the kernel printk
* the init process using /dev/kmsg to call printk to show log
* shell, which open /dev/console and write with sys_write()
The shell goes into the normal uart open/write routing,
but the other two go into the console operations.
The open routing calls imx serial startup, which will write USR1/2
register without any lock and critical with imx_console_write call.
Here add spin_lock for startup/shutdown/console_write routing.
Remove the imx_setup_ufcr() call on startup when CONSOLE enabled,
as this will cause clock reinit, and output garbage.
Huang Shijie [Wed, 23 Nov 2011 08:45:17 +0000 (16:45 +0800)]
ENGR00163603-2 IMX/SDMA : save the real count for one DMA transaction.
When we use the SDMA in the UART driver(such as imx6q), we will
meet one situation:
Assume we set 64 bytes for the RX DMA buffer.
The receiving DMA buffer has received some data, but not full.
An Aging DMA request will be received by the SDMA controller if we enable the
IDDMAEN(UCR4[6]) in this case.
So the UART driver needs to know the count of the real received bytes,
and push them to upper layer.
Add two new fields to sdmac, and update the `residue` in sdma_tx_status().
Anson Huang [Thu, 1 Dec 2011 07:51:27 +0000 (15:51 +0800)]
ENGR00163275 [MX6]Fix PLL enable fail panic
The root cause is irqs come between PLL register reading
and getting system time, an interrupt handle could take
more than 2ms, which will make the time reading and register
reading unalignment, see below:
1. pll reg read, it is still not locked;
2. here comes an interrupt, and its handler could spent > 2ms;
3. time reading, found current time already > expiration time(1.2ms),
and we treated the pll lock fail;
There are two method could fix it, one is disable interrupt
during pll lock bit and time expiration check, the other is
to add a second time read after time expiration to make sure
the pll didn't lock during the time we set. I choose the seconde
choise, since it impacts kernel less than disable interrupt;
Even Xu [Wed, 30 Nov 2011 01:36:18 +0000 (09:36 +0800)]
ENGR00163497-3 MX6Q: Enable io_init function for camera drivers
1. Enable io_init function for camera drivers.
2. Add ov5640_mipi camera driver supported resolutions
3. Fine-turn ov5640_mipi camera driver output image quality
Richard Zhu [Mon, 28 Nov 2011 05:02:51 +0000 (13:02 +0800)]
ENGR00163128 [MX6q_ARM2]SATA Boot: reboot failed if boot from SATA
The root cause is that the sata power is not enabled after reboot
the system when boot from sata.
Built in the sata driver would fix this issue.
In this way, the sata power would be enabled defautly
when there is a sata device is plugged into the slot, otherwise,
the power would be disabled.
NOTE:
Pls don't plug the sata disk after the system is booted up.
System wouldn't recognized it, since there are no any power and
clocks on the sata slot.
Fugang Duan [Fri, 25 Nov 2011 10:27:29 +0000 (18:27 +0800)]
ENGR00163040 - FEC : Fix ethernet cannot work after system sleep.
- Descript:
Ethernet can't work in uboot and kernel DHCP throught press
'reset' key when send sleep command 'echo mem > /sys/power/state'
- Cause:
FEC driver will power down phy when system sleep. If just reset the
board, FEC driver cannot run resume function. So, need power on phy
in uboot and linux driver.
Yauheni Kaliuta [Thu, 13 Oct 2011 11:19:05 +0000 (14:19 +0300)]
usb: gadget: file_storage: fix race on unloading
There is a race, reproduced rarely if you unload the module
when host finishes mass storage device initialization (reading
partition table and so on): fsg_unbind() code first closes
lun files then waits for worker thread to finish its work, as
the result the thread may operate on already closed device
with an oops and backtrace:
[ 484.937225] [<b00e403c>] (touch_atime+0x4/0x140) from [<b00a1498>] (generic_file_aio_read+0x678/0x6f0)
[ 484.946563] [<b00a1498>] (generic_file_aio_read+0x678/0x6f0) from [<b00d08c4>] (do_sync_read+0xb0/0xf4)
[ 484.955963] [<b00d08c4>] (do_sync_read+0xb0/0xf4) from [<b00d1478>] (vfs_read+0xac/0x144)
[ 484.964172] [<b00d1478>] (vfs_read+0xac/0x144) from [<af24c6a8>] (fsg_setup+0x7f4/0x900 [g_file_storage])
[ 484.973785] [<af24c6a8>] (fsg_setup+0x7f4/0x900 [g_file_storage]) from [<af24da14>] (fsg_main_thread+0x85c/0x175c [g_file_storage])
[ 484.985626] [<af24da14>] (fsg_main_thread+0x85c/0x175c [g_file_storage]) from [<b0077c48>] (kthread+0x7c/0x84)
[ 484.995666] [<b0077c48>] (kthread+0x7c/0x84) from [<b002f950>] (kernel_thread_exit+0x0/0x8)
[ 485.004028] Code: eaffffd0e28dd008e8bd8df0e92d40f7 (e591400c)
Change the order in unbind: wait for the thread first, then close
the files.
Jason Chen [Wed, 23 Nov 2011 02:46:01 +0000 (10:46 +0800)]
ENGR00162919 mxc_vout: there is one column garbage line at right for split mode
as ipu processing device driver has protect check, the CR ENGR00155141 can be
reverted, this CR is the cause of garbage line.
this patch also change v4l2 output try_task function to make sure there is no
cropping for output when display support window.
Sandor Yu [Tue, 22 Nov 2011 12:25:32 +0000 (20:25 +0800)]
ENGR00162881 Workaround for some MX6x boards failed read EDID data
HDMI video mode setting in command line will not work if no EDID data
reading from HDMI sink.
Creat a default modelist for HDMI video mode when no EDID data.
Then default video mode can work even if no EDID data.
Anson Huang [Tue, 22 Nov 2011 10:26:57 +0000 (18:26 +0800)]
ENGR00162867 [MX6]Fix pm bug of error coding
Before suspend, we need to check whether there
is wakeup source's irq pending via GPC_ISR1~4,
previous coding checked for set of irq status
of GPC_ISR1, should be GPC_ISR1~4.
Yauheni Kaliuta [Thu, 13 Oct 2011 11:19:05 +0000 (14:19 +0300)]
usb: gadget: file_storage: fix race on unloading
There is a race, reproduced rarely if you unload the module
when host finishes mass storage device initialization (reading
partition table and so on): fsg_unbind() code first closes
lun files then waits for worker thread to finish its work, as
the result the thread may operate on already closed device
with an oops and backtrace:
[ 484.937225] [<b00e403c>] (touch_atime+0x4/0x140) from [<b00a1498>] (generic_file_aio_read+0x678/0x6f0)
[ 484.946563] [<b00a1498>] (generic_file_aio_read+0x678/0x6f0) from [<b00d08c4>] (do_sync_read+0xb0/0xf4)
[ 484.955963] [<b00d08c4>] (do_sync_read+0xb0/0xf4) from [<b00d1478>] (vfs_read+0xac/0x144)
[ 484.964172] [<b00d1478>] (vfs_read+0xac/0x144) from [<af24c6a8>] (fsg_setup+0x7f4/0x900 [g_file_storage])
[ 484.973785] [<af24c6a8>] (fsg_setup+0x7f4/0x900 [g_file_storage]) from [<af24da14>] (fsg_main_thread+0x85c/0x175c [g_file_storage])
[ 484.985626] [<af24da14>] (fsg_main_thread+0x85c/0x175c [g_file_storage]) from [<b0077c48>] (kthread+0x7c/0x84)
[ 484.995666] [<b0077c48>] (kthread+0x7c/0x84) from [<b002f950>] (kernel_thread_exit+0x0/0x8)
[ 485.004028] Code: eaffffd0e28dd008e8bd8df0e92d40f7 (e591400c)
Change the order in unbind: wait for the thread first, then close
the files.
Peter Chen [Mon, 21 Nov 2011 06:10:49 +0000 (14:10 +0800)]
ENGR00161644 usb-gadget: prime directly for status dTD of ep0
During the setup transfer, if prime status just after prime the data,
but before the data completes, there is a potential problem:
The device's qTD has NO direction bit, If the IN request(Status Stage)
is added to qTD list while the OUT (Data Stage) is priming,
then the IN will not prime by software, it will prime automatically
by controller as OUT.
We met one usb hang issue during repeat plug in/out test at i.mx6q
that the data status has finished but status has never finished,
it is most likely above issue.
After this fix, the repeat plug in/out test passes successfully.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
projects / karo-tx-linux.git / log