Commit graph

20 commits

Author SHA1 Message Date
Simon Glass
7fb57396e6 exynos: Enable the debug UART in SPL
As a debugging aid, allow UART3 to be used as a debug UART in SPL. This
is a precursor to proper UART support, which requires a substantial
refactor.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-08-05 21:06:11 -06:00
Simon Glass
bf6e702232 exynos: Add debug UART support for Samsung S5P serial
Add a debug UART implementation for this serial driver. It does not set up
pinmux automatically - this must be done before calling debug_uart_init().

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-08-05 21:06:11 -06:00
Simon Glass
89ca9351cf exynos: serial: Refactor init code for debug UART
The debug UART code needs to perform the same init as the normal UART
driver. In preparation for this, move the init code into two functions, one
for the basic init and one for setting the baud rate. This will make adding
debug UART support easier.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-08-05 21:06:11 -06:00
Simon Glass
73e256c2ac dm: exynos: Move serial to driver model
Change the Exynos serial driver to work with driver model and switch over
all relevant boards to use it.

Signed-off-by: Simon Glass <sjg@chromium.org>
2014-10-22 10:36:45 -06:00
Inha Song
e6252fab2d serial: s5p: set automatically clears after resetting Rx FIFO
This patch fix the u-boot shell problem on TRATS2 board.
 - If hold the key while booting is in progress,
   white spaces are written in u-boot shell.

Set Automatically clears after resetting Rx FIFO.

Signed-off-by: Inha Song <ideal.song@samsung.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>
Tested-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2014-02-05 16:26:09 +09:00
Axel Lin
a81630e0bf serial: s5p: Staticize local functions
Staticize local functions in s5p serial driver.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Minkyu Kang <mk7.kang@samsung.com>
2013-11-08 15:25:14 -05:00
Wolfgang Denk
1a4596601f Add GPL-2.0+ SPDX-License-Identifier to source files
Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>
2013-07-24 09:44:38 -04:00
Rajeshwari Shinde
d4ec8f0885 S5P: Serial: Add fdt support to driver
This patch adds FDT support to the serial s5p driver.
At present disabling the serial console (from the device tree) crashes
U-Boot. Add checks for this case, so that execution can continue without
a serial console.
It also enables the serial_s5p driver recognize the silent_console option.

Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Gabe Black <gabeblack@google.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2013-06-24 20:47:41 +09:00
Akshay Saraswat
ffbff1dd6e Exynos: uart: s5p: enabling the uart tx/rx fifo
This patch enables the uart tx/rx fifo. Now that fifo is enabled,
the uart read/write functions are modfied to check the UFSTAT register
for fifo status instead of UTRSTAT (as required with fifo's enabled).
Tested by booting linux kernel. Before enabling tx/rx fifo
"Uncompressing linux" message is garbled and after enabling it is proper.

Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Akshay Saraswat <akshay.s@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2013-05-21 20:20:30 +09:00
Marek Vasut
b4980515f3 serial: s5p: Move serial registration from serial_initialize()
Move the registration of s5p_serialN_device ports from default
serial_initialize() into driver specific function called from
serial_initialize(). This slims down the serial_initialize() call
to a bare tracker of all possible serial port registration routines
in U-Boot.

The newly implemented s5p_serial_initialize() function, which is
implemented inside of the serial_s5p driver allows encapsulation
of s5p_serialN_device within the serial_s5p driver itself.

Also, remove the exports of s5p_serialN_device from include/serial.h
as they are no longer needed. This is simply because the implementation of
default_serial_console() is wrapped into the serial_s5p driver and
the default console is picked by CONFIG_SERIAL<N> macro in config file.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: Tom Rini <trini@ti.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
2012-10-15 11:53:49 -07:00
Marek Vasut
90bad891e1 serial: Properly spell out the structure member names of serial_driver
Properly spell out the whole structure member names when an initialized
varible is instantiated from the struct serial_driver. In case the
structure definition for struct serial_driver undergoes reordering,
there will be no impact on variables defined based on this structure.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: Tom Rini <trini@ti.com>
Cc: Anatolij Gustschin <agust@denx.de>
Cc: Stefan Roese <sr@denx.de>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: C Nauman <cnauman@diagraph.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Michal Simek <monstr@monstr.eu>
2012-10-15 11:53:48 -07:00
Mike Frysinger
1c9a5606d8 serial: drop useless ctlr field
The multi serial support has a "ctlr" field which almost no one uses,
but everyone is forced to set to useless strings.  So punt it.

Funny enough, the only code that actually reads this field (the mpc8xx
driver) has a typo where it meant to look for the SCC driver.  Fix it
while converting the check to use the name field.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
CC: Heiko Schocher <hs@denx.de>
CC: Anatolij Gustschin <agust@denx.de>
CC: Tom Rix <Tom.Rix@windriver.com>
CC: Minkyu Kang <mk7.kang@samsung.com>
CC: Craig Nauman <cnauman@diagraph.com>
CC: Marek Vasut <marek.vasut@gmail.com>
CC: Prafulla Wadaskar <prafulla@marvell.com>
CC: Mahavir Jain <mjain@marvell.com>
2011-07-26 16:38:05 +02:00
Mike Frysinger
6c768ca746 serial: push default_serial_console to drivers
Rather than sticking arch/board/driver specific logic in the common
serial code, push it all out to the respective drivers.  The serial
drivers declare these funcs weak so that boards can still override
things with their own definition.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
CC: Heiko Schocher <hs@denx.de>
CC: Anatolij Gustschin <agust@denx.de>
CC: Tom Rix <Tom.Rix@windriver.com>
CC: Minkyu Kang <mk7.kang@samsung.com>
CC: Craig Nauman <cnauman@diagraph.com>
CC: Prafulla Wadaskar <prafulla@marvell.com>
CC: Mahavir Jain <mjain@marvell.com>
Tested-by: Minkyu Kang <mk7.kang@samsung.com>
2011-07-26 16:37:57 +02:00
Minkyu Kang
e0617c621d S5P: serial: Use the inline function instead of static value
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2011-02-02 00:54:45 +01:00
John Rigby
2956532625 Move DECLARE_GLOBAL_DATA_PTR to file scope
It can be optimised out by the compiler otherwise resulting
in obscure errors like a board not booting.

This has been documented in README since 2006 when these were
first fixed up for GCC 4.x.

Signed-off-by: John Rigby <john.rigby@linaro.org>

Fix some additional places.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-By: Albert ARIBAUD <albert.aribaud@free.fr>
2010-12-21 11:33:36 +01:00
Minkyu Kang
1628cfc4fe ARMV7: S5P: serial: support the s5pc210
This patch is for s5pc210 support.
Due to the resigter of baudrate is changed from slot to value,
add both of them to uart structure.

Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2010-10-19 11:35:29 +09:00
Minkyu Kang
f70409aff3 ARMV7: S5P: separate the peripheral clocks
Because of peripheral devices can select clock sources,
separate the peripheral clocks. (pwm, uart and so on)
It just return the pclk at s5pc1xx SoC,
but s5pc210 SoC must be calculated by own clock register setting.

Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2010-08-30 14:44:16 +09:00
Minkyu Kang
d93d0f0cfe S5P: Use accessor functions instead of SoC specific defines to access the base address
This patch is intended to prepare the other S5P SoC. (s5pc210)
If use SoC specific defines then can't share with other SoC.
So, make the accessor functions for access the base address by common way.

Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2010-08-17 11:38:19 +09:00
Minkyu Kang
1a4106dd20 SAMSUNG: serial: remove compiler warnings
remove below warnings
serial_s5p.c: In function 'serial_getc_dev':
serial_s5p.c:136: warning: dereferencing type-punned pointer will break strict-aliasing rules
serial_s5p.c: In function 'serial_putc_dev':
serial_s5p.c:152: warning: dereferencing type-punned pointer will break strict-aliasing rules

Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2010-07-09 13:28:55 +09:00
Minkyu Kang
46a3b5c8df SAMSUNG: serial: modify name from s5pc1xx to s5p
Because of other s5p series SoC will use these serial functions,
modify function's name and structure's name.

Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2010-04-30 05:23:23 -05:00
Renamed from drivers/serial/serial_s5pc1xx.c (Browse further)