Commit graph

23 commits

Author SHA1 Message Date
Govindraj.R
91930652a2 OMAP2+: UART: Add mechanism to probe uart pins and configure rx wakeup
The commit (bce492c0  ARM: OMAP2+: UART: Fix incorrect population of
default uart pads) removed default uart pads that where getting populated
and which was making rx pin wakeup capable. If uart pads were used in
different mode by any other module then it would fail since the default
pads took over all the uart pins forcefully. With removal of default pads
the rx_pad wakeup for console uart while waking up from off mode is broken.

Utilise the mux api available to probe the availability of mux pins
in uart mode and probe for availability of uart pin in mux mode0
if uart is available as uart pin itself then configure rx pin
as wakeup capable.

This patch itself doesn't cater to all boards. Boards using uart rx wakeup
mechanism should ensure the usage of omap_serial_init_port by configuring
required uart ports and pass necessary mux data, till then this probing of
uart pins can cater to enabling of rx pad wakeup to most of the boards.

This patch can also throw some boot warning from _omap_mux_get_by_name
if pin is requested for availability is not present while dynamically probing
the uart pins availability such boot warnings can be addressed only when board
files are patched with omap_serial_init_port calls passing the right pads
needed for a given port.

Discussion Threads for reference:
http://www.spinics.net/lists/linux-omap/msg69859.html
http://www.spinics.net/lists/linux-omap/msg68659.html

Cc: Felipe Balbi <balbi@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Russ Dill <russ.dill@gmail.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Ameya Palande <ameya.palande@ti.com>
Signed-off-by: Govindraj.R <govindraj.raja@ti.com>
[tony@atomide.com: updated to fix compile when CONFIG_OMAP_MUX is not set]
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-06-05 04:04:11 -07:00
Tony Lindgren
cc4915d8a0 ARM: OMAP2+: Fix board_mux section type conflict when OMAP_MUX is not set
Otherwise we can get:

arch/arm/mach-omap2/mux.h:249:31: error: board_mux causes a section type conflict

Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-02-23 16:44:34 -08:00
Colin Cross
21a42c9275 ARM: omap4: Pass core and wakeup mux tables to omap4_mux_init
OMAP4 contains two separate instances of the padconf registers,
one in the core system config and one in the wakeup system config.
Pass in two tables to apply the correct values to each instance.

Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-06-01 02:25:04 -07:00
Tony Lindgren
8aee603946 omap2+: mux: Add macro for configuring static with omap_hwmod_mux_init
Add macro for defining static pins in the board file.

We can now start implementing pin multiplexing in the platform init
code for devices that call omap_hwmod_mux_init. Currently that is
only implemented for serial.c.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-03-11 11:32:26 -08:00
R Sricharan
86c79bf45f omap2+: mux: Remove the use of IDLE flag
Currently OMAP_DEVICE_PAD_IDLE flag is used to mux pins
dynamically. This can be simplified by using the enabled
state variable of each pad. This also fixes the issue of
the static pads not getting muxed after idling and
disable/enable state transitions.

Signed-off-by: sricharan <r.sricharan@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-03-11 11:32:25 -08:00
Tony Lindgren
029268e4c1 omap2+: Add separate list for dynamic pads to mux
This avoids going through the list unnecessarily when
idling devices for runtime PM.

Based on an earlier patch by sricharan <r.sricharan@ti.com>.

Signed-off-by: sricharan <r.sricharan@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-03-11 11:32:25 -08:00
Tony Lindgren
40e4439930 omap2+: Add struct omap_board_data and use it for platform level serial init
This is needed to pass board specific data such as pads used to the
platform level driver init code.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-12-22 18:42:35 -08:00
Tony Lindgren
8d9af88f55 omap2+: Allow hwmod state changes to mux pads based on the state changes
Allow hwmod state changes to mux pads based on the state changes.

By default, only enable and disable the pads. In some rare cases
dynamic remuxing for the idles states is needed, this can be done
by passing the enable, idle, and off pads from board-*.c file along
with OMAP_DEVICE_PAD_REMUX flag.

Thanks to Paul Walmsley <paul@booyaka.com> for the comments on the
hwmod related changes.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-12-22 18:42:35 -08:00
Tony Lindgren
9796b323b5 omap2+: Add support for hwmod specific muxing of devices
This allows adding hwmod specific pads dynamically during the
platform device init.

Note that we don't currently have the hwmod specific signals
listed in the hwmod data, but struct omap_hwmod_mux_info will
make that possible if necessary.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-12-22 18:42:35 -08:00
Aaro Koskinen
7203f8a48b arm: mach-omap2: remove NULL board_mux from board files
If CONFIG_OMAP_MUX is not enabled, we can define board_mux in the header
file instead of forcing every single board to define it.

Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
[tony@atomide.com: updated for combined board-zoom files]
Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-12-02 17:03:41 -08:00
Benoit Cousson
a7722d8796 OMAP4: mux: Add CBS package data for OMAP4430 ES2
Please note that the full muxmodes are re-defined for ES2 instead
of using the subset. There are 81 differences among 204 pins.
The subset fixup will have to iterate over the whole list for each
subset entry, which can lead to an important number of iteration.
On the other hand, it will take much more memory at boot time.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Anand Gadiyar <gadiyar@ti.com>
2010-11-17 12:01:52 +01:00
Benoit Cousson
a041a52c4d OMAP4: mux: Add CBL package data for OMAP4430 ES1
Add data for OMAP4430 generated from HW pinout & register database.
The data set is split in two partitions for both core and wkup.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
2010-11-17 12:01:50 +01:00
Benoit Cousson
112485e9c5 OMAP: mux: Add support for control module split in several partitions
Starting on OMAP4, the pin mux configuration is located in two
different partitions of the control module (CODE_PAD and WKUP_PAD).
The first one is inside the core power domain whereas the second
one is inside the wakeup.
- Add the capability to add any number of partition during board init
time depending of Soc partitioning.
- Add some init flags as well in order to avoid explicit Soc version
check inside the mux core code.
- Add a comment with mux0 mode on top of omap_mux/board/<partition>
if the current mux mode is not the default one.

Thanks to Tony Lindgren <tony@atomide.com> for the following improvements:
- Add omap_mux_get for getting the partition data so platform level
device code can use it.
- Fix the rx51 board code to use the new API.
- Do not store the partition for each mux entry. Look up the partition
for debugfs instead.

Thanks to Dan Murphy <dmurphy@ti.com> for testing on OMAP4 and reporting
a couple of bugs.
Thanks to Anand Gadiyar <gadiyar@ti.com> for testing on OMAP3 zoom and
bug report.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Tested-by: Murphy Dan <dmurphy@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Anand Gadiyar <gadiyar@ti.com>
2010-11-17 12:01:49 +01:00
Tony Lindgren
5a3b2f7a5a omap: Fix omap_mux_init_signal not to trash muxname
Otherwise the muxname passed to the function will get truncated.

Based on an earlier patch by rockefeller.lin@innocomm.com.

Reported-by: rockefeller.lin@innocomm.com
Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-10-01 16:35:24 -07:00
Tony Lindgren
89ba109229 omap: mux: Add data for 2430
Add data for 2430. Big thanks to Paul Walmsley <paul@pwsan.com>
for generating usable mux data out of TRMs.

Cc: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-07-05 16:31:36 +03:00
Tony Lindgren
fc44046167 omap: mux: Add data for 2420
Add data for 2420. Big thanks to Paul Walmsley <paul@pwsan.com>
for generating usable mux data out of TRMs.

Cc: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-07-05 16:31:36 +03:00
Tony Lindgren
ac3dbeefb8 omap: mux: Allow compiling in new mux code on all mach-omap2 systems
Allow compiling in new mux code on all mach-omap2 systems

Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-07-05 16:31:36 +03:00
Tony Lindgren
6dd8a6824a omap: mux: Renumber package defines to make room for older 24xx packages
Only POP and SIP are known to exist for 2420, 2430 seems to only have
SIP package available.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-07-05 16:31:35 +03:00
Tony Lindgren
a8eb7ca0cb omap3: Replace ARCH_OMAP34XX with ARCH_OMAP3
Replace ARCH_OMAP34XX with ARCH_OMAP3

Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-15 09:27:02 -08:00
Tony Lindgren
d4bb72e50a omap: Fix functions for dynamic remuxing of pins
Make the omap_mux_read and write available for board code,
and rename omap_mux_set_board_signals into omap_mux_write_array.
Also add the related prototypes and comments into mux.h.

In some cases we want to change the signals dynamically,
mostly for power management.

Note that we cannot use the signal names as they are set
__init to save memory.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-01-19 18:17:35 -08:00
Tony Lindgren
662c8b55d2 omap: mux: Add 36xx CBP package support
Add 36xx CBP package support

Cc: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-12-11 16:16:33 -08:00
Tony Lindgren
ddaa912a21 omap: mux: Add new style pin multiplexing data for 34xx
Add new style mux data for 34xx. This should also
work with 3630 easily by adding the processor subset
and ball data.

Note that this data is __initdata, and gets optimized
out except for the GPIO pins if CONFIG_OMAP_MUX
is not set.

Also note that this data uses omap3630 naming for
the SDMMC registers instead of 34xx naming with just
MMC.

Cc: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-12-11 16:16:32 -08:00
Tony Lindgren
15ac7afe51 omap: mux: Add new style pin multiplexing code for omap3
Initially only for 34xx. This code allows us to:

- Make the code more generic as the omap internal signal
  names can stay the same across omap generations for some
  devices

- Map mux registers to GPIO registers that is needed for
  dynamic muxing of pins during off-idle

- Override bootloader mux values via kernel cmdline using
  omap_mux=some.signa1=0x1234,some.signal2=0x1234

- View and set the mux registers via debugfs if
  CONFIG_DEBUG_FS is enabled

Cc: Mike Rapoport <mike@compulab.co.il>
Cc: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-12-11 16:16:32 -08:00