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path: root/drivers/serial/serial_s5p.c
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* clk: convert API to match reset/mailbox styleStephen Warren2016-06-19-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following changes are made to the clock API: * The concept of "clocks" and "peripheral clocks" are unified; each clock provider now implements a single set of clocks. This provides a simpler conceptual interface to clients, and better aligns with device tree clock bindings. * Clocks are now identified with a single "struct clk", rather than requiring clients to store the clock provider device and clock identity values separately. For simple clock consumers, this isolates clients from internal details of the clock API. * clk.h is split so it only contains the client/consumer API, whereas clk-uclass.h contains the provider API. This aligns with the recently added reset and mailbox APIs. * clk_ops .of_xlate(), .request(), and .free() are added so providers can customize these operations if needed. This also aligns with the recently added reset and mailbox APIs. * clk_disable() is added. * All users of the current clock APIs are updated. * Sandbox clock tests are updated to exercise clock lookup via DT, and clock enable/disable. * rkclk_get_clk() is removed and replaced with standard APIs. Buildman shows no clock-related errors for any board for which buildman can download a toolchain. test/py passes for sandbox (which invokes the dm clk test amongst others). Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org>
* serial: s5p: use clock api to get clock rateThomas Abraham2016-05-25-1/+14
| | | | | | | | | | On Exynos platforms that support clock driver API, allow the driver to use clock api get the SCLK clock rate. Cc: Minkyu Kang <mk7.kang@samsung.com> Signed-off-by: Thomas Abraham <thomas.ab@samsung.com> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
* serial: s5p: get the port id number from the alias of the device nodeThomas Abraham2016-05-25-2/+2
| | | | | | | | | | The port id, if not specified in the device node, can be obtained from the alias of the device node listed in the aliases node. Cc: Minkyu Kang <mk7.kang@samsung.com> Signed-off-by: Thomas Abraham <thomas.ab@samsung.com> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
* debug_uart: Adjust the declaration of debug_uart_init()Simon Glass2015-10-21-1/+1
| | | | | | | | | | | We want to be able to add other common code to this function. So change the driver's version to have an underscore before it, just like _debug_uart_putc(). Define debug_uart_init() to call this version. Update all drivers to this new method. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* dm: Use dev_get_addr() where possibleSimon Glass2015-08-31-1/+1
| | | | | | | | | | This is a convenient way for a driver to get the hardware address of a device, when regmap or syscon are not being used. Change existing callers to use it as an example to others. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Joe Hershberger <joe.hershberger@ni.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org>
* exynos: Enable the debug UART in SPLSimon Glass2015-08-05-0/+2
| | | | | | | | 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>
* exynos: Add debug UART support for Samsung S5P serialSimon Glass2015-08-05-0/+25
| | | | | | | 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>
* exynos: serial: Refactor init code for debug UARTSimon Glass2015-08-05-12/+24
| | | | | | | | | 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>
* dm: exynos: Move serial to driver modelSimon Glass2014-10-22-183/+72
| | | | | | | 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>
* serial: s5p: set automatically clears after resetting Rx FIFOInha Song2014-02-05-2/+2
| | | | | | | | | | | | | | 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>
* serial: s5p: Staticize local functionsAxel Lin2013-11-08-12/+12
| | | | | | | Staticize local functions in s5p serial driver. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Minkyu Kang <mk7.kang@samsung.com>
* Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk2013-07-24-14/+1
| | | | | | Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
* S5P: Serial: Add fdt support to driverRajeshwari Shinde2013-06-24-0/+78
| | | | | | | | | | | | | | 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>
* Exynos: uart: s5p: enabling the uart tx/rx fifoAkshay Saraswat2013-05-21-4/+9
| | | | | | | | | | | | 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>
* serial: s5p: Move serial registration from serial_initialize()Marek Vasut2012-10-15-0/+8
| | | | | | | | | | | | | | | | | | | | | | 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>
* serial: Properly spell out the structure member names of serial_driverMarek Vasut2012-10-15-9/+10
| | | | | | | | | | | | | | | | | 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>
* serial: drop useless ctlr fieldMike Frysinger2011-07-26-6/+5
| | | | | | | | | | | | | | | | | | | 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>
* serial: push default_serial_console to driversMike Frysinger2011-07-26-0/+16
| | | | | | | | | | | | | | | | | 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>
* S5P: serial: Use the inline function instead of static valueMinkyu Kang2011-02-02-1/+1
| | | | Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
* Move DECLARE_GLOBAL_DATA_PTR to file scopeJohn Rigby2010-12-21-1/+2
| | | | | | | | | | | | | | | 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>
* ARMV7: S5P: serial: support the s5pc210Minkyu Kang2010-10-19-1/+5
| | | | | | | | | 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>
* ARMV7: S5P: separate the peripheral clocksMinkyu Kang2010-08-30-2/+2
| | | | | | | | | | 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>
* S5P: Use accessor functions instead of SoC specific defines to access the ↵Minkyu Kang2010-08-17-5/+1
| | | | | | | | | | | 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>
* SAMSUNG: serial: remove compiler warningsMinkyu Kang2010-07-09-2/+2
| | | | | | | | | | | 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>
* SAMSUNG: serial: modify name from s5pc1xx to s5pMinkyu Kang2010-04-30-0/+206
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>
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