Commit graph

185 commits

Author SHA1 Message Date
Wang, Xiaoming
7585ca0dc9 extcon: remove freed groups caused the panic or warning in unregister flow
(edev->extcon_dev_type.groups) has been freed before device_unregister.
extcon_dev_unregister -> kfree(edev->extcon_dev_type.groups)
then device_unregister -> device_del -> device_remove_attrs
-> device_remove_groups(dev, type->groups);
panic because type->groups has been freed.

This patch is move device_unregister ahead of groups free
to avoid panic in extcon_dev_unregister.

stack
[ 22.847226] BUG: unable to handle kernel paging request at 5f39746e
[ 22.847234] IP: [<c1387fcd>] sysfs_remove_group+0x2d/0xd0
[ 22.847238] *pdpt = 0000000000000000 *pde = 0000000000000000
[ 22.847241] Oops: 0000 [#1] PREEMPT SMP
[ 22.847244] Modules linked in:
[ 22.847249] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 3.10.16-261140-g6533774 #1
[ 22.847251] task: f3078000 ti: f3072000 task.ti: f3072000
[ 22.847254] EIP: 0060:[<c1387fcd>] EFLAGS: 00010206 CPU: 0
[ 22.847257] EIP is at sysfs_remove_group+0x2d/0xd0
[ 22.847259] EAX: 00000004 EBX: 5f39746e ECX: 00000000 EDX: f2773560
[ 22.847261] ESI: f2653b80 EDI: f2773560 EBP: f3073c90 ESP: f3073c70
[ 22.847263] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 22.847264] CR0: 8005003b CR2: 5f39746e CR3: 020e5000 CR4: 001007f0
[ 22.847266] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 22.847268] DR6: ffff0ff0 DR7: 00000400
[ 22.847269] Stack:
[ 22.847276] c13848c9 c1ae3805 f3073c80 f24ddc4c 00000246 f2773e88 f1c44408 f2531340
[ 22.847283] f3073ca0 c16935ca f1c44400 f27d3340 f3073cb4 c1693858 f24ddc44 f1c44400
[ 22.847289] f1c4420c f3073cc8 c1693f76 f1c44400 00000001 00000000 f3073ce8 c1694011
[ 22.847290] Call Trace:
[ 22.847295] [<c13848c9>] ? sysfs_hash_and_remove+0x49/0xa0
[ 22.847300] [<c1ae3805>] ? sub_preempt_count+0x55/0xe0
[ 22.847306] [<c16935ca>] device_remove_groups+0x2a/0x40
[ 22.847309] [<c1693858>] device_remove_attrs+0x38/0x60
[ 22.847313] [<c1693f76>] device_del+0xd6/0x150
[ 22.847316] [<c1694011>] device_unregister+0x21/0x60
[ 22.847320] [<c13869e8>] ? sysfs_remove_link+0x18/0x30
[ 22.847323] [<c1697d04>] ? class_compat_remove_link+0x34/0x50
[ 22.847329] [<c18bf5d9>] extcon_dev_unregister+0xf9/0x130
[ 22.847333] [<c18bd21f>] pwrsrc_extcon_dev_reg_callback+0x7f/0xa0
[ 22.847337] [<c1ae36e3>] notifier_call_chain+0x43/0x60
[ 22.847343] [<c12634e1>] __blocking_notifier_call_chain+0x41/0x80
[ 22.847347] [<c126353f>] blocking_notifier_call_chain+0x1f/0x30
[ 22.847351] [<c18bef39>] extcon_dev_notify_add_device+0x19/0x20
[ 22.847354] [<c18bf074>] extcon_dev_register+0x134/0x580
[ 22.847358] [<c1ae3805>] ? sub_preempt_count+0x55/0xe0
[ 22.847363] [<c154b4da>] ? gpiod_request+0x6a/0x1d0
[ 22.847368] [<c132528a>] ? kmem_cache_alloc_trace+0xaa/0x170
[ 22.847372] [<c18c0179>] ? fsa9285_probe+0x99/0x3f0
[ 22.847375] [<c18c00e0>] ? fsa9285_irq_handler+0xf0/0xf0
[ 22.847379] [<c18c019f>] fsa9285_probe+0xbf/0x3f0
[ 22.847383] [<c18c00e0>] ? fsa9285_irq_handler+0xf0/0xf0
[ 22.847388] [<c1828d9e>] i2c_device_probe+0x7e/0xf0
[ 22.847392] [<c1386e52>] ? sysfs_create_link+0x22/0x40
[ 22.847395] [<c1696c62>] ? driver_sysfs_add+0x72/0xa0
[ 22.847399] [<c1697119>] driver_probe_device+0x79/0x360
[ 22.847403] [<c1697491>] __driver_attach+0x91/0xa0
[ 22.847407] [<c1697400>] ? driver_probe_device+0x360/0x360
[ 22.847410] [<c16955a2>] bus_for_each_dev+0x42/0x80
[ 22.847414] [<c1696bee>] driver_attach+0x1e/0x20
[ 22.847417] [<c1697400>] ? driver_probe_device+0x360/0x360
[ 22.847420] [<c169675f>] bus_add_driver+0xef/0x270
[ 22.847425] [<c1828e10>] ? i2c_device_probe+0xf0/0xf0
[ 22.847428] [<c1828e10>] ? i2c_device_probe+0xf0/0xf0
[ 22.847432] [<c1697a8a>] driver_register+0x6a/0x160
[ 22.847436] [<c1addb3d>] ? mutex_unlock+0xd/0x10
[ 22.847440] [<c1438ab2>] ? __create_file+0x122/0x2a0
[ 22.847446] [<c20557d3>] ? extcon_class_init+0x15/0x15
[ 22.847450] [<c1827cbb>] i2c_register_driver+0x2b/0xd0
[ 22.847454] [<c1438d05>] ? debugfs_create_file+0x35/0x40
[ 22.847458] [<c20557d3>] ? extcon_class_init+0x15/0x15
[ 22.847461] [<c20557e4>] fsa9285_extcon_init+0x11/0x29
[ 22.847465] [<c12001aa>] do_one_initcall+0xba/0x170
[ 22.847471] [<c2012b4a>] kernel_init_freeable+0x119/0x1b8
[ 22.847475] [<c20124d3>] ? do_early_param+0x7a/0x7a
[ 22.847480] [<c1ac4090>] kernel_init+0x10/0xd0
[ 22.847485] [<c1ae6cf7>] ret_from_kernel_thread+0x1b/0x28
[ 22.847488] [<c1ac4080>] ? rest_init+0x80/0x80

Tested-by: Liu, Chuansheng <chuansheng.liu@intel.com>
Reviewed-by: Liu, Chuansheng <chuansheng.liu@intel.com>
Signed-off-by: xiaoming wang <xiaoming.wang@intel.com>
Signed-off-by: Zhang Dongxing <dongxing.zhang@intel.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
2013-11-26 15:17:23 +09:00
Charles Keepax
6ac6b475c5 extcon: arizona: Get pdata from arizona structure not device
In the case of a device tree system there will be no pdata attached to
the device, causing us to deference a NULL pointer. Better to take the
pdata from the Arizona structure as this will always exist and we know
will have been populated since it is populated by the MFD device which
binds in the extcon driver.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
2013-11-26 14:30:10 +09:00
Greg Kroah-Hartman
2424a7339b Update extcon for 3.13
This patchset modify extcon core to remove unnecessary allocation sequence for
 'dev' instance and change extcon_dev_register() interface. extcon-gpio use
 gpiolib API to get debounce time and include small fix of extcon core/device
 driver.
 
 Detailed description for patchset:
 1. Modify extcon core driver
 - The extcon-gpio driver use gpio_set_debounce() API provided from gpiolib
 if gpio driver for SoC support gpio_set_debounce() function and support 'gpio_
 activ_low' filed to check whether gpio active state is 1(high) or 0(low).
 - Change field type of 'dev' in structure extcon_dev and remove the sequence
 of allocating memory of 'struct dev' on extcon_dev_register() function because
 extcon device must need 'struct device.
 - Change extcon_dev_register() prototype to simplify it and remove unnecessary
 parameter as below:
 
 2. Fix coding style and typo
 - extcon core     : Fix indentation coding style and remove unnecessary casting
 - extcon-max8997  : Fix checkpatch warning
 - extcon-max77693 : Fix checkpatch warning
 - extcon-arizona  : Fix typo of comment and modify minor issue
 - extcon-palmas   : Use dev_get_platdata()
 
 3. Modify extcon-arizona driver
 - Modify minor issue about micbias and comparision statement
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJSRNuGAAoJEJzN3yze689TcaQP/0jyJEFTkB0EsutUsK5K4Ul9
 Hv6G07ccCQZOR8Bk5VR3a/ldX2nMlc8uZkhCrcvxbPM9NDuUNt5Q18EFrMCYomwz
 bipFPds6Q2UuGxnaSgqBQKJ6PH/IYXTfS1Y2nbaOivKK18L62WBWw4wCz59WWyS8
 B4ROjn0OjfzHlbp3uPjjCAqY9PpVsxFfTxszR0+Xt4hbapet/7UTgyMO6fJRZ0JF
 gzWCKcXghRvv5ZEravX5sUc4SW6bNYKq3CgPBPIEmo33W0obk5bKOY5qDVdc7e03
 WhYCPhm/gYsEfHq/Ah9k9xz3Q5ObrNdDep5nAFrS4PpoyJfalYwpRmcExTTuCEXj
 CXmR/NpSK2BPlxgrQ32/bTve2bMtT16ZAMXKAIxHGwAUG/RAuQIZx0trjTSERNi1
 A0juMZG3a2o9q+heCIeUp/bjhMGqCgfmlSwGrinU6hZMEj8DL4KtgiZrozOp4RlF
 SX+LOvNA40EK+S2FljY30G3NkTCLksJimjQ6v37b1vhSnXBNh5R+lhzXUY6cBBHB
 b5oo+6P4A9CCcmoUg8XOb5/NEjJX8JxpUKGpF/saBgHOQl5xXAfYBYVi5HVpgrJ1
 Soqlv2s/wUxmGGjG9meC+AEvTu/DtKGNUMtGDZM8TUULAxwFsvdStSeJ5JHqyXuE
 iaAj5pGTNkFsXnwPISZT
 =8Hr2
 -----END PGP SIGNATURE-----

Merge tag 'extcon-next-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/extcon into char-misc-next

Chanwoo writes:

Update extcon for 3.13

This patchset modify extcon core to remove unnecessary allocation sequence for
'dev' instance and change extcon_dev_register() interface. extcon-gpio use
gpiolib API to get debounce time and include small fix of extcon core/device
driver.

Detailed description for patchset:
1. Modify extcon core driver
- The extcon-gpio driver use gpio_set_debounce() API provided from gpiolib
if gpio driver for SoC support gpio_set_debounce() function and support 'gpio_
activ_low' filed to check whether gpio active state is 1(high) or 0(low).
- Change field type of 'dev' in structure extcon_dev and remove the sequence
of allocating memory of 'struct dev' on extcon_dev_register() function because
extcon device must need 'struct device.
- Change extcon_dev_register() prototype to simplify it and remove unnecessary
parameter as below:

2. Fix coding style and typo
- extcon core     : Fix indentation coding style and remove unnecessary casting
- extcon-max8997  : Fix checkpatch warning
- extcon-max77693 : Fix checkpatch warning
- extcon-arizona  : Fix typo of comment and modify minor issue
- extcon-palmas   : Use dev_get_platdata()

3. Modify extcon-arizona driver
- Modify minor issue about micbias and comparision statement
2013-09-26 20:47:25 -07:00
Chanwoo Choi
42d7d7539a extcon: Simplify extcon_dev_register() prototype by removing unnecessary parameter
This patch remove extcon_dev_register()'s second parameter which means
the pointer of parent device to simplify prototype of this function.
So, if extcon device has the parent device, it should set the pointer of
parent device to edev.dev.parent in extcon device driver instead of in
extcon_dev_register().

Cc: Graeme Gregory <gg@slimlogic.co.uk>
Cc: Kishon Vijay Abraham I <kishon@ti.com>
Cc: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-09-27 09:37:01 +09:00
Chanwoo Choi
dae6165124 extcon: Change field type of 'dev' in extcon_dev structure
The extcon device must always need 'struct device' so this patch change
field type of 'dev' instead of allocating memory for 'struct device' on
extcon_dev_register() function.

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <cw00.choi@samsung.com>
2013-09-27 09:37:01 +09:00
Charles Keepax
4102424302 extcon: arizona: Don't require micbias to be shifted in pdata
Every other pdata field is specified unshifted the patch handles
shifting for the MICBIAS from the microphone detection polarity
configurations in the extcon driver rather than demanding it in
pdata to match other fields.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
2013-09-27 09:37:01 +09:00
Charles Keepax
4ba1a9ff59 extcon: arizona: Correct typo in headphone detect range transitions
We should move range when the measured value is greater than or equal to
the max value not when greater than.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
2013-09-27 09:37:01 +09:00
Guenter Roeck
5bfbdc9caa extcon: gpio: Add support for active-low presence to detect pins
This patch add 'gpio_active_low' field to 'struct gpio_extcon_data'
to check whether gpio active state is 1(high) or 0(low).

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
2013-09-27 09:37:01 +09:00
Jingoo Han
7c0f6558f8 extcon: use dev_get_platdata()
Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly. This is a cosmetic change
to make the code simpler and enhance the readability.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
2013-09-27 09:37:01 +09:00
Guenter Roeck
338de0ca68 extcon: gpio: Use gpio driver/chip debounce if supported
This patch use gpio_set_debounce() API provided from gpiolib if SoC or device
driver with gpio support gpio_set_debounce() function.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
2013-09-27 09:37:00 +09:00
Guenter Roeck
1073514b11 extcon: gpio: Do not unnecessarily initialize variables
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
2013-09-27 09:37:00 +09:00
Jingoo Han
cb8bb3a772 extcon: Remove casting the return value which is a void pointer
Casting the return value which is a void pointer is redundant.
The conversion from void pointer to any other pointer type is
guaranteed by the C programming language.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
2013-09-27 09:37:00 +09:00
Chanwoo Choi
a75e1c73a4 extcon: Fix indentation coding style to improve readability
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-09-27 09:37:00 +09:00
Sachin Kamat
a33411b26e extcon: max77693: Fix checkpatch warning
Fixes the following warning:
WARNING: space prohibited before semicolon

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
2013-09-27 09:37:00 +09:00
Sachin Kamat
d97abdde17 extcon: arizona: Fix a typo in a comment
Fixes an incomplete comment introduced by commit 9c2ba270
("extcon: arizona: Simplify HPDET based identification").

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
2013-09-27 09:37:00 +09:00
Charles Keepax
cb9005d7da extcon: arizona: Clear trig_sts bits on all paths
We want the trig_sts bits to be cleared in all cases where we consider
the jack detection interrupt to have been handled. Specifically, if a
duplicate detection event was suppressed these bits were not cleared
causing the CODEC to not enter a low power state. This patch clears the
bits on the duplicate detection code path.

Reported-by: Ryo Tsutsui <ryo.tsutsui@wolfsonmicro.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
2013-09-27 09:37:00 +09:00
Sachin Kamat
ad07d8b489 extcon: max8997: Fix checkpatch warning
Fixes the following warning:
WARNING: space prohibited before semicolon

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
2013-09-27 09:36:59 +09:00
Chanwoo Choi
d667566754 extcon: arizona: Fix up minor coding style to remove unnecessary braces
This fixes up braces coding style issue by using checkpatch script.

Cc: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 12:03:31 -07:00
Chanwoo Choi
2cc7e4d4b8 extcon: class: Remove unnecessary extern declaration
This patch remove unnecessary extern declaration (extcon_set_state).
checkpatch found this coding style issue.

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 12:03:30 -07:00
Chanwoo Choi
c2275d2fa5 extcon: Fix up 80 column coding style issues
This patch fix 80 column coding sytle issues by using checkpatch script.

Cc: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 12:03:30 -07:00
Linus Torvalds
542a086ac7 Driver core patches for 3.12-rc1
Here's the big driver core pull request for 3.12-rc1.
 
 Lots of tiny changes here fixing up the way sysfs attributes are
 created, to try to make drivers simpler, and fix a whole class race
 conditions with creations of device attributes after the device was
 announced to userspace.
 
 All the various pieces are acked by the different subsystem maintainers.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.21 (GNU/Linux)
 
 iEYEABECAAYFAlIlIPcACgkQMUfUDdst+ynUMwCaAnITsxyDXYQ4DqEsz8EcOtMk
 718AoLrgnUZs3B+70AT34DVktg4HSThk
 =USl9
 -----END PGP SIGNATURE-----

Merge tag 'driver-core-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core patches from Greg KH:
 "Here's the big driver core pull request for 3.12-rc1.

  Lots of tiny changes here fixing up the way sysfs attributes are
  created, to try to make drivers simpler, and fix a whole class race
  conditions with creations of device attributes after the device was
  announced to userspace.

  All the various pieces are acked by the different subsystem
  maintainers"

* tag 'driver-core-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (119 commits)
  firmware loader: fix pending_fw_head list corruption
  drivers/base/memory.c: introduce help macro to_memory_block
  dynamic debug: line queries failing due to uninitialized local variable
  sysfs: sysfs_create_groups returns a value.
  debugfs: provide debugfs_create_x64() when disabled
  rbd: convert bus code to use bus_groups
  firmware: dcdbas: use binary attribute groups
  sysfs: add sysfs_create/remove_groups for when SYSFS is not enabled
  driver core: add #include <linux/sysfs.h> to core files.
  HID: convert bus code to use dev_groups
  Input: serio: convert bus code to use drv_groups
  Input: gameport: convert bus code to use drv_groups
  driver core: firmware: use __ATTR_RW()
  driver core: core: use DEVICE_ATTR_RO
  driver core: bus: use DRIVER_ATTR_WO()
  driver core: create write-only attribute macros for devices and drivers
  sysfs: create __ATTR_WO()
  driver-core: platform: convert bus code to use dev_groups
  workqueue: convert bus code to use dev_groups
  MEI: convert bus code to use dev_groups
  ...
2013-09-03 11:37:15 -07:00
Mark Brown
1a82e81e0e extcon: adc-jack: Use power efficient workqueue
The debounce timeout is generally quite long and the work not performance
critical so allow the scheduler to run the work anywhere rather than in
the normal per-CPU workqueue.

Signed-off-by: Mark Brown <broonie@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-08-05 08:53:34 +09:00
Mark Brown
d0db2e7ae7 extcon: gpio: Use power efficient workqueue for debounce
The debounce timeout is generally quite long and the work not performance
critical so allow the scheduler to run the work anywhere rather than in
the normal per-CPU workqueue.

Signed-off-by: Mark Brown <broonie@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-08-05 08:53:34 +09:00
Mark Brown
df9a5ab463 extcon: arizona: Use power efficient workqueue
None of the delayed work the driver schedules has particularly short delays
and it is not performance sensitive so let the scheduler run it wherever
is most efficient rather than in a per CPU workqueue by using the system
power efficient workqueue.

Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-08-05 08:53:34 +09:00
Laxman Dewangan
7281e05aab extcon: palmas: Option to disable ID/VBUS detection based on platform
Based on system design, platform needs to detect the VBUS or ID or
both. Provide option to select this through platform data to
disable part of cable detection through palmas-usb.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Graeme Gregory <gg@slimlogic.co.uk>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-08-05 08:53:34 +09:00
Laxman Dewangan
024783ef42 extcon: palams: add support for suspend/resume
Add suspend/resume callbacks and support for wakeup from
suspend on USB HOST or USB Device cable insertion or removal.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Graeme Gregory <gg@slimlogic.co.uk>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-08-05 08:53:34 +09:00
Laxman Dewangan
002945f014 extcon: palmas: enable ID_GND and ID_FLOAT detection always
When integrating driver with Tegra platform, it is found that
the ID pins get detected only once after booting system and
further removal and re-insert does not detect the ID pin.

Fixing this issue with enabling interrupt on ID_GND and ID_FLOAT
always  and clearing the status on LATCH register which actually
occurred.

Also if interrupt occurs with line status as zero then based on
previous status, set the cable state.

Add debug prints to display the cable state when any cable
insertion/removal happen.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Graeme Gregory <gg@slimlogic.co.uk>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-08-05 08:53:34 +09:00
Kishon Vijay Abraham I
fc57303a82 extcon: palmas: remove assigning "edev.name" to palmas
of_extcon_get_extcon_dev() uses dev_name for getting the reference
to the extcon device. If the extcon driver assigns a different
name other than dev_name, of_extcon_get_extcon_dev() wouldn't
be able to find the reference to the extcon device. Since the
client drivers of extcon-palmas would be using
of_extcon_get_extcon_dev(), removed assigning edev.name
in extcon-palmas.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-08-05 08:53:33 +09:00
Kishon Vijay Abraham I
6eee5b3b49 extcon: Add an API to get extcon device from dt node
Added an API of_extcon_get_extcon_dev() to be used by drivers to get
extcon device in the case of dt boot (this can be used instead of
extcon_get_extcon_dev()).

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-08-05 08:52:45 +09:00
Greg Kroah-Hartman
af01da0e02 extcon: convert extcon_class to use dev_groups
The dev_attrs field of struct class is going away soon, dev_groups
should be used instead.  This converts the extcon_class code to use the
correct field.

Cc: MyungJoo Ham <myungjoo.ham@samsung.com>
Acked-by: Chanwoo Choi<cw00.choi@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-07-25 16:34:39 -07:00
Kees Cook
02aa2a3763 drivers: avoid format string in dev_set_name
Calling dev_set_name with a single paramter causes it to be handled as a
format string.  Many callers are passing potentially dynamic string
content, so use "%s" in those cases to avoid any potential accidents,
including wrappers like device_create*() and bdi_register().

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:41 -07:00
Graeme Gregory
b1f254e35d extcon: Palmas Extcon Driver
This is the driver for the USB comparator built into the palmas chip. It
handles the various USB OTG events that can be generated by cable
insertion/removal.

Signed-off-by: Graeme Gregory <gg@slimlogic.co.uk>
Signed-off-by: Moiz Sonasath <m-sonasath@ti.com>
Signed-off-by: Ruchika Kharwar <ruchika@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: George Cherian <george.cherian@ti.com>
[kishon@ti.com: adapted palmas usb driver to use the extcon framework]
Signed-off-by: Sebastien Guiriec <s-guiriec@ti.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-17 16:08:36 -07:00
Kishon Vijay Abraham I
9c8a013af4 extcon: add EXPORT_SYMBOL_GPL for exported functions
Added EXPORT_SYMBOL_GPL() for extcon_register_interest and
extcon_register_notifier in order to avoid undefined reference
error when building the consumer modules of extcon as _modules_.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-17 16:03:35 -07:00
Chanwoo Choi
ea9dd9d655 extcon: Change permission 'state' sysfs entry (rw -> r)
This patch change permission from read/write to only read.
The specific process in the user-space couldn't change the state
of cable when cable is attached or detached.
- /sys/class/extcon/[devine name]/state

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-17 16:02:33 -07:00
Linus Torvalds
5647ac0ad4 Removal of GENERIC_GPIO for v3.10
GENERIC_GPIO now synonymous with GPIOLIB. There are no longer any valid
 cases for enableing GENERIC_GPIO without GPIOLIB, even though it is
 possible to do so which has been causing confusion and breakage. This
 branch does the work to completely eliminate GENERIC_GPIO.
 
 However, it is not trivial to just create a branch to remove it. Over
 the course of the v3.9 cycle more code referencing GENERIC_GPIO has been
 added to linux-next that conflicts with this branch. The following must
 be done to resolve the conflicts when merging this branch into mainline:
 
 * "git grep CONFIG_GENERIC_GPIO" should return 0 hits. Matches should be
   replaced with CONFIG_GPIOLIB
 * "git grep '\bGENERIC_GPIO\b'" should return 1 hit in the Chinese
   documentation.
 * Selectors of GENERIC_GPIO should be turned into selectors of GPIOLIB
 * definitions of the option in architecture Kconfig code should be deleted.
 
 Stephen has 3 merge fixup patches[1] that do the above. They are currently
 applicable on mainline as of May 2nd.
 
 [1] http://www.mail-archive.com/linux-kernel@vger.kernel.org/msg428056.html
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.12 (GNU/Linux)
 
 iQIcBAABAgAGBQJRifUnAAoJEEFnBt12D9kBs2YP/0U6+ia+xYvkVaJc28PDVIzn
 OReZNcJOYU8D5voxz0voaRD0EdcPwjbMu9Kp9aXMHlk4VxevF+8jCc/us0bIjtO1
 VcB5VmSCIhMhxdnBlum11Mk7Vr5MCweyl9NBsypnPt8cl4obMBZHf2yzoodFktNb
 wtyYlOb6FALtc6iDbOO6dG3w9F7FAOLvskUFzdv89m8mupTsBu9jw9NqFDbJHOex
 rxq0Sdd+kWF/nkJVcV5Y6jIdletRlhpipefMJ9diexreHvwqh+c4kJEYZaXgB5+m
 ha95cPbReK1d+RqzM3A8d4irzSVSmq4k7ijI6QkFOr48+AH7XsgKv5so885LKzMN
 IIXg2Phm9i0H8+ecEvhcc4oIYBHJiEKK54Y0qUD9dqbFoDGPTCSqMHdSSMbpAY+J
 bIIXlVzj1En3PPNUJLPt8q8Qz6WxCT9mDST3QSGYnD4o90HT+1R9j92RxGL6McOq
 rUOyJDwmzFvpBvKK4raGdOU435M+ps2NPKKNIRaIGQPPY9rM1kN4YqvhXukEsC9L
 3a3+3cQLh7iKxBHncxeQsJfethP1CPkJnzvF9r+ZZLf2rcPH4pbQIE2uO0XnX/nd
 5/DKi0nGgAJ//GMMzdo3RiOA5zGFjIZ/KMvfhQldpP6qFJRhqdGi6FPlAcwr1z1n
 YnCByPwwlvfC4LTXFOGL
 =xodc
 -----END PGP SIGNATURE-----

Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux

Pull removal of GENERIC_GPIO from Grant Likely:
 "GENERIC_GPIO now synonymous with GPIOLIB.  There are no longer any
  valid cases for enableing GENERIC_GPIO without GPIOLIB, even though it
  is possible to do so which has been causing confusion and breakage.
  This branch does the work to completely eliminate GENERIC_GPIO."

* tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux:
  gpio: update gpio Chinese documentation
  Remove GENERIC_GPIO config option
  Convert selectors of GENERIC_GPIO to GPIOLIB
  blackfin: force use of gpiolib
  m68k: coldfire: use gpiolib
  mips: pnx833x: remove requirement for GENERIC_GPIO
  openrisc: default GENERIC_GPIO to false
  avr32: default GENERIC_GPIO to false
  xtensa: remove explicit selection of GENERIC_GPIO
  sh: replace CONFIG_GENERIC_GPIO by CONFIG_GPIOLIB
  powerpc: remove redundant GENERIC_GPIO selection
  unicore32: default GENERIC_GPIO to false
  unicore32: remove unneeded select GENERIC_GPIO
  arm: plat-orion: use GPIO driver on CONFIG_GPIOLIB
  arm: remove redundant GENERIC_GPIO selection
  mips: alchemy: require gpiolib
  mips: txx9: change GENERIC_GPIO to GPIOLIB
  mips: loongson: use GPIO driver on CONFIG_GPIOLIB
  mips: remove redundant GENERIC_GPIO select
2013-05-09 09:59:16 -07:00
Alexandre Courbot
76ec9d18b8 Convert selectors of GENERIC_GPIO to GPIOLIB
GENERIC_GPIO is now equivalent to GPIOLIB and features that depended on
GENERIC_GPIO can now depend on GPIOLIB to allow removal of this option.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
2013-04-16 18:47:14 +09:00
Greg Kroah-Hartman
606f34ad12 This is small fixes for extcon driver.
MAX77693 extcon driver
 - Add 'static' keryword to internal data structure
 - Fix return value using 'ret' instead of hardcoding
 
 MAX8997 extcon driver
 - Use dev_err() instead of pr_err()
 - Fix return value using 'ret' instead of hardcoding
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJRY0rlAAoJEJzN3yze689TccwP/1ZyeE0fhn6S9wxgdtz2jBJC
 vh0eWeYwLlJnXKMfC78FpJWV+zjOkKhlXZFOLqy/I7KN6ejGAFDKsTW22abo7Fml
 qggp5ofMEwJS3gSDVjDBx2CDIHW7haHtPSnNH3KX++0p+///mK/JNQaNW62/j874
 nelL3OXpZI6WhF1uYvnh3EQg6ExD/MfKEng8wdVYL9sRXRzbDv+tnQT4Cdq0CSEB
 zTSY5zS6mXYMZRlUxBXhtFvkSfhxL9bJEj0QPcTS47uY+6hKt24gCcP7kq5fIhpB
 bq5Bpp+DGEJ7t/FgAVbWukdNkizgEzVtbQFro7JvoqiK097qhedYXn0ni4Hl7xPe
 mQ+q4N7AkHxDBx068lnb9EF/3ujRSzWJy4Rvy3AC/6KY1F2hDjlI3TJKDjIx8eQz
 kmflwl5UVZ42Ug9P6QGK+mU+1ZuaMFNhMm99FBzAEeyCdIHiBF2wz/JJWbYuPlj7
 DTgycOwYw035hwj504Ae+jIpjuzPdLd22uKxuMEFNmJd/rFUXgFp5ZMQb47jJIDI
 58wiH1+nEqVmYYhnxOcnQh//g0RALVxJoO3P3GDDbWF5jtk/hleGa7VAY3MhLGJ1
 rOwdD0g16LU/gcmOrm5OdbVqofedH/LDjHx1GdY9g1vGGcq0ES+FZEyOBRjSHue2
 bza21ioK4U85wwnq7cly
 =vnWV
 -----END PGP SIGNATURE-----

Merge tag 'extcon-for-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/extcon into char-misc-next

Chanwoo writes:

	This is small fixes for extcon driver.

	MAX77693 extcon driver
	- Add 'static' keryword to internal data structure
	- Fix return value using 'ret' instead of hardcoding

	MAX8997 extcon driver
	- Use dev_err() instead of pr_err()
	- Fix return value using 'ret' instead of hardcoding
2013-04-08 16:50:23 -07:00
Sachin Kamat
3ad9e86d54 extcon: max8997: Fix return value
Return the value obtained from the function instead of hardcoding.
Fixes the following warnings:
drivers/extcon/extcon-max8997.c:235 max8997_muic_set_path() info:
why not propagate 'ret' from max8997_update_reg() instead of (-11)?
drivers/extcon/extcon-max8997.c:248 max8997_muic_set_path() info:
why not propagate 'ret' from max8997_update_reg() instead of (-11)?

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-04-09 07:53:46 +09:00
Sachin Kamat
c2536543d5 extcon: max77693: Fix return value
Return the value obtained from the function instead of hardcoding.
Silences the following warnings:
drivers/extcon/extcon-max77693.c:297 max77693_muic_set_path()
info: why not propagate 'ret' from max77693_update_reg() instead of (-11)?
drivers/extcon/extcon-max77693.c:310 max77693_muic_set_path()
info: why not propagate 'ret' from max77693_update_reg() instead of (-11)?

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-04-09 07:53:46 +09:00
Jingoo Han
6ed28105c0 extcon: max8997: use dev_err() instead of pr_err()
dev_err() is more preferred than pr_err().

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-04-09 07:53:46 +09:00
Sachin Kamat
813b451644 extcon: max77693: Staticize default_init_data
Commit 0ec83bd246 ("extcon: max77693: Initialize register of MUIC
device to bring up it without platform data") added this structure
but forgot to make it static. Without this patch we get the following
warning:
drivers/extcon/extcon-max77693.c:41:26: warning:
symbol 'default_init_data' was not declared. Should it be static?

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-04-09 07:53:46 +09:00
Greg Kroah-Hartman
2638953fcd extcon: arizona: Updates for v3.10
There's a bunch of different things in this series, I can split them out
 if need be:
 
  - Support for configuring the button detection circuit to reflect the
    accessories supplied with the system.
  - Improvements in the HPDET based detection scheme.
  - Additional robustness against more pathological use cases.
  - A few small standalone fixes.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.12 (GNU/Linux)
 
 iQIcBAABAgAGBQJRWr1qAAoJELSic+t+oim9DUwP/3ur4GgIjk4T3Kix364EeWyw
 CDipdcxw/kEIopXSbFX3nMolWvvA0bEtOVGnu67lTm1K2YQxStn9XnK/SnijZq0x
 DR7cWygKwWVF+STYZrWW3OX/4Lyb3MCCeKqBTmw8LNUBHIrWgEi7YB96G3aO+top
 lsHlPNhXYfG65017NmLyGdWCVsCnzRA21nj4ZPJORf9ij+5wNCJwcCsCLvC1kULX
 ol5apYUoToEUCrkHa5x5vYVEGif3483CwPIteKLUWyHgQ1vIxkNqxAQLxJHdyH+M
 +tJ+qKciavttUjXhIwZ/ZaOY5NiQo8d/1OQFUb2z1ZmOpj7uS7ICS6nBg2pBRK+h
 vRY/q+0zZI89o6gggV5HFHmwJtCiYmcLgsX3YL4KH4oXTX/nQvUkkSKzWf3pXCQb
 NpmcWhRuGsiNr6qq/twdJ+34ddxgesmXwtzozlecZ4Goz/9ooInpT5QYtXWzHFqm
 vbUrfk+WrXY6jpz5Xo2hDf2N7zmZaBiPbggJk5wymCWscHl4gANjkfHYEoRedUnX
 VKC21WHxaR22e0KLKo+Aq+eDdOy8BZjCKbOUbhhWe1L5TCQ6QojptLyNJJIuNQ7c
 NAdu8nQDLUnQBC8HTZrDWlsjo/xIatozvhWyI3NX5Q9VSgkCYnu7fpQ/Q2UYn13p
 MkxOYhqCsBuqH9cPDvB8
 =6SXJ
 -----END PGP SIGNATURE-----

Merge tag 'extcon-arizona-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc into char-misc-next

Mark writes:

	extcon: arizona: Updates for v3.10

	There's a bunch of different things in this series, I can split them out
	if need be:

	 - Support for configuring the button detection circuit to reflect the
	   accessories supplied with the system.
	 - Improvements in the HPDET based detection scheme.
	 - Additional robustness against more pathological use cases.
	 - A few small standalone fixes.
2013-04-03 11:28:18 -07:00
Mark Brown
7abd4e2a8f extcon: arizona: Make mic detection timeout configurable
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-02 11:54:07 +01:00
Mark Brown
cd59e79656 extcon: arizona: Allow additional debounce during microphone detection
Help mitigate against mechanical bounce during the initial detection by
allowing the configuration of an additional debounce on top of that the
hardware does during the initial phase of microphone detection operation.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-02 11:54:06 +01:00
Mark Brown
41a57850b5 extcon: arizona: Clear existing button reports before reporting new one
If the user moves directly from one button to another then we won't get a
no buttons pressed event and will therefore end up reporting that two
buttons are simultaneously pressed which isn't supported by the hardware.
Make sure we clear any existing button reports before reporting any new
ones.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-02 11:54:05 +01:00
Mark Brown
939c5671d1 extcon: arizona: Time out if MICDET fails to report
In pathological cases the microphone detection may fail to report, for
example due to a failure to get a stable measurement. Provide a timeout
to cover such cases.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-02 11:54:03 +01:00
Mark Brown
9c2ba270ea extcon: arizona: Simplify HPDET based identification
Rather than measuring both HP channels we can simply directly measure the
microphone impedance and then rely on MICDET for final confirmation of the
presence of a suitable microphone. This improves the overall performance
of the identification process.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-02 11:54:02 +01:00
Mark Brown
db924ff5c7 extcon: arizona: Don't ground flip when using HPDET identification
This extra check makes the procedure take longer and is of marginal use
in identification so do not execute it.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-02 11:54:01 +01:00
Mark Brown
9dd5e53d9d extcon: arizona: Retry HPDET identification for high impedance
Sometimes we can trigger measurements early if contacts are shorted during
a slow insertion. As well as debouncing add further robustness by retrying
if we get a high impedance measurement for headphones as this can indicate
that the headphones were not yet connected.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-02 11:54:00 +01:00
Mark Brown
2643fd641a extcon: arizona: Tune up HPDET debounce
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-02 11:53:58 +01:00