summaryrefslogtreecommitdiff
path: root/drivers/serial
Commit message (Collapse)AuthorAgeLines
...
| * dm: serial: ns16550: Correct logic for checking for characterSimon Glass2014-10-23-1/+1
| | | | | | | | | | | | | | | | | | There is a bug in the logic which checks for an available character. This can cause invalid characters to be received - this was noticed on beaglebone. Fix it. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@ti.com>
| * dm: serial: Reset the watchdog while waiting in getc()Simon Glass2014-10-23-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | We have moved the busy-wait loop out of drivers and into the uclass. This means that we must reset the watchdog when busy-waiting. Note: some drivers may still have a busy-wait even with driver model, as a transition mechanism. Driver model will tolerate this, and is can be cleaned up when all users of the driver use driver model. An example is ns16550. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@ti.com>
* | serial: make local functions staticJeroen Hofstee2014-10-25-6/+6
|/ | | | Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
* dm: serial: Support driver model in pl01x driverSimon Glass2014-10-22-0/+73
| | | | | | | | Add driver model support in this driver, using platform data provided by the board. Signed-off-by: Simon Glass <sjg@chromium.org> Tested-by: Stephen Warren <swarren@wwwdotorg.org>
* dm: serial: Tidy up the pl01x driverSimon Glass2014-10-22-140/+165
| | | | | | | | | | | | | | | | | | | Adjust the driver so that leaf functions take a pointer to the serial port register base. Put all the global configuration in the init function, and use the same settings from then on. This makes it much easier to move to driver model without duplicating the code, since with driver model we use platform data rather than global settings. The driver is compiled with either the CONFIG_PL010_SERIAL or CONFIG_PL011_SERIAL option and this determines the uart type. With driver model this needs to come in from platform data, so create a new CONFIG_PL01X_SERIAL config which brings in the driver, and adjust the driver to support both peripheral variants. Signed-off-by: Simon Glass <sjg@chromium.org> Tested-by: Stephen Warren <swarren@wwwdotorg.org>
* dm: imx: serial: Support driver model in the MXC serial driverSimon Glass2014-10-22-25/+145
| | | | | | | Add driver model support with this driver. Boards which use this driver should define platform data in their board files. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: serial: Put common code into separate functionsSimon Glass2014-10-22-15/+17
| | | | | | | Avoid duplicating the code which deals with getc() and putc(). It is fairly simple, but may expand later. 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-uclass: Fix compilation errorHans de Goede2014-10-10-1/+1
| | | | Signed-off-by: Hans de Goede <hdegoede@redhat.com>
* Merge branch 'master' of git://git.denx.de/u-boot-armTom Rini2014-10-07-0/+207
|\
| * serial: add UniPhier serial driverMasahiro Yamada2014-10-05-0/+207
| | | | | | | | | | | | The driver for on-chip UART used on Panasonic UniPhier platform. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* | stdio: Add force parameter to stdio_deregisterHans de Goede2014-10-06-1/+1
|/ | | | | | | In some cases we really want to move forward with a deregister, add a force parameter to allow this, and replace the dev with a nulldev in this case. Signed-off-by: Hans de Goede <hdegoede@redhat.com>
* cosmetic: replace MIN, MAX with min, maxMasahiro Yamada2014-09-24-2/+2
| | | | | | | The macro MIN, MAX is defined as the aliase of min, max, respectively. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* kconfig: add blank Kconfig filesMasahiro Yamada2014-09-24-0/+0
| | | | | | | | This would be useful to start moving various config options. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>
* dm: serial: Don't require device tree to configure a consoleSimon Glass2014-09-23-1/+2
| | | | | | Allow serial_find_console_or_panic() to work without a device tree. Signed-off-by: Simon Glass <sjg@chromium.org>
* Merge branch 'master' of git://git.denx.de/u-boot-armTom Rini2014-09-17-6/+13
|\
| * arm: vf610: lpuart: disable FIFO on initializatonStefan Agner2014-09-09-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | UART does not use the UART FIFO, but we should also not rely that the UART FIFO is diabled by default. For instance, when loading U-Boot using the boot ROMs serial downloader protocol over UART, FIFO is enabled at U-Boot start time. This patch disables the RX and TX FIFO, sets back their thresholds and flushes them. Signed-off-by: Stefan Agner <stefan@agner.ch>
| * arm: vf610: lpuart: fix status register handlingStefan Agner2014-09-09-6/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The status register 1 (S1) is not writeable, hence we should not write it. In order to clear the RDRF flag we only need to read the data register. Also, when stressing U-Boot a lot with serial input, an overflow can occur which asserts the S1_OR flag (while not asserting the S1_RDRF flag). To clear this flag we again just need to read the data register, hence add this flag to the abort conditions for the while loop. Insert a compiler barrier to make sure reading the data register gets executed after reading the status register. Signed-off-by: Stefan Agner <stefan@agner.ch>
* | dm: tegra: Enable driver model for serialSimon Glass2014-09-10-0/+39
| | | | | | | | | | | | | | | | | | Use driver model for serial ports. Since Tegra now uses driver model for serial, adjust the definition of V_NS16550_CLK so that it is clear that this is only used for SPL. Signed-off-by: Simon Glass <sjg@chromium.org>
* | dm: serial: Add driver model support for ns16550Simon Glass2014-09-10-3/+155
| | | | | | | | | | | | | | | | | | | | Add driver model support so that ns16550 can support operation both with and without driver model. The driver needs a clock frequency so cannot stand alone unfortunately. The clock frequency must be provided by a separate driver. Signed-off-by: Simon Glass <sjg@chromium.org>
* | dm: serial: Collect common baud rate code in ns16550Simon Glass2014-09-10-20/+13
| | | | | | | | | | | | | | The same sequence is used in several places, so move it into a function. Note that UART_LCR_BKSE is an alias for UART_LCR_DLAB. Signed-off-by: Simon Glass <sjg@chromium.org>
* | dm: serial: Move baud rate calculation to ns16550.cSimon Glass2014-09-10-11/+21
| | | | | | | | | | | | | | Move the function that calculates the baud rate divisor into ns16550.c so it can be used by that file. Signed-off-by: Simon Glass <sjg@chromium.org>
* | sandbox: serial: Support a coloured consoleSimon Glass2014-09-10-0/+83
| | | | | | | | | | | | | | | | | | | | The current sandbox serial driver is a pretty trivial example and does not have the featues that might be needed for other board serial drivers. To help provide a better example, add a text colour property to the device tree for sandbox. This uses platform data, a device tree node, driver private data and a remove() method. Signed-off-by: Simon Glass <sjg@chromium.org>
* | sandbox: Convert serial driver to use driver modelSimon Glass2014-09-10-31/+36
| | | | | | | | | | | | | | Adjust the sandbox serial driver to use the new driver model uclass. The driver works much as before, but within the new framework. Signed-off-by: Simon Glass <sjg@chromium.org>
* | dm: Add a uclass for serial devicesSimon Glass2014-09-10-0/+217
| | | | | | | | | | | | | | | | Serial devices support simple byte input/output and a few operations to find out whether data is available. Add a basic uclass for serial devices to be used by drivers that are converted to driver model. Signed-off-by: Simon Glass <sjg@chromium.org>
* | serial: Set up the 'priv' pointer when creating a serial deviceSimon Glass2014-09-10-0/+1
| | | | | | | | | | | | | | | | The stdio_dev structure has a private pointer for its creator, but it is not set up by the serial system. Set it to point to the serial device so that it can be found by code called by stdio. Signed-off-by: Simon Glass <sjg@chromium.org>
* | serial: lpuart: add 32-bit registers lpuart supportJingchang Lu2014-09-08-0/+118
|/ | | | | | | | | On vybrid, lpuart's registers are 8-bit. On LS102xA, lpuart's registers are 32-bit. This patch adds the support for 32-bit registers on LS102xA. Signed-off-by: Jingchang Lu <jingchang.lu@freescale.com> Signed-off-by: Yuan Yao <yao.yuan@freescale.com>
* serial: move nios2-yanu.h into opencores_yanu driverThomas Chou2014-08-30-1/+86
| | | | | | | | | The nios2-yanu.h contains hardware registers and bits of opencores yanu. As there is no other user of this header , it should be moved into the driver. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> CC: Renato Andreola <renato.andreola@imagos.it>
* nios2: divide nios2-io.h into each specific drivers and remove itThomas Chou2014-08-30-2/+57
| | | | | | | | | | The nios2-io.h defines hardware registers and bits of several FPGA IP cores. It could be divided in to the specific drivers, including altera timer, altera sysid, altera uart and altera jtag uart. The altera pio and altera spi drivers use their own hardware definitions. The removal of nios2-io.h will help modularity and maintenance. Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
* omap: clean-up dead configsMasahiro Yamada2014-08-09-12/+1
| | | | | | | | | | | | | | The following configs are not defined at all. - CONFIG_OMAP1510 - CONFIG_OMAP_1510P1 - CONFIG_OMAP_SX1 - CONFIG_OMAP3_DMA - CONFIG_OMAP3_ZOOM2 - CONFIG_OMAP_INNOVATOR Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Tom Rini <trini@ti.com>
* serial: sh: Add support External Clock modeNobuhiro Iwamatsu2014-08-09-3/+9
| | | | | | | | | R8A7780 and R7A7791 of rmobile supports External Clock mode, and these uses different from Internal Clock mode registers and calculations to the baud rate setting. This adds function for External Clock mode. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
* serial: sh: Add support DL and CKS register for R8A7794Nobuhiro Iwamatsu2014-08-09-1/+2
| | | | | | | | R8A7794 has DL and CKS register, and these registers are used in external clock mode. This adds support these for R8A7794. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
* Merge branch 'u-boot-ti/master' into 'u-boot-arm/master'Albert ARIBAUD2014-07-28-2/+2
|\
| * keystone2: use CONFIG_SOC_KEYSTONE in common placesKhoronzhuk, Ivan2014-07-25-2/+2
| | | | | | | | | | | | | | | | Use CONFIG_SOC_KEYSTONE in common places instead of defining a lot of "if def .. || if def " for different Keystone2 SoC types. Acked-by: Murali Karicheri <m-karicheri2@ti.com> Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
* | Merge branch 'u-boot-sh/rmobile' into 'u-boot-arm/master'Albert ARIBAUD2014-07-28-1/+2
|\ \
| * | serial: sh: Add support R8A7794Nobuhiro Iwamatsu2014-07-24-1/+2
| |/ | | | | | | | | | | This adds the preset value to register for R8A7794. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
* | Add a flag indicating when the serial console is readySimon Glass2014-07-23-0/+1
| | | | | | | | | | | | | | | | | | | | For sandbox we have a fallback console which is used very early in U-Boot, before serial drivers are available. Rather than try to guess when to switch to the real console, add a flag so we can be sure. This makes sure that sandbox can always output a panic() message, for example, and avoids silent failure (which is very annoying in sandbox). Signed-off-by: Simon Glass <sjg@chromium.org>
* | stdio: Pass device pointer to stdio methodsSimon Glass2014-07-23-10/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | At present stdio device functions do not get any clue as to which stdio device is being acted on. Some implementations go to great lengths to work around this, such as defining a whole separate set of functions for each possible device. For driver model we need to associate a stdio_dev with a device. It doesn't seem possible to continue with this work-around approach. Instead, add a stdio_dev pointer to each of the stdio member functions. Note: The serial drivers have the same problem, but it is not strictly necessary to fix that to get driver model running. Also, if we convert serial over to driver model the problem will go away. Code size increases by 244 bytes for Thumb2 and 428 for PowerPC. 22: stdio: Pass device pointer to stdio methods arm: (for 2/2 boards) all +244.0 bss -4.0 text +248.0 powerpc: (for 1/1 boards) all +428.0 text +428.0 Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Marek Vasut <marex@denx.de> Reviewed-by: Marek Vasut <marex@denx.de>
* | serial: ns16550: use a const variable instead of macroMasahiro Yamada2014-07-22-3/+3
| | | | | | | | | | | | | | | | Just for type checking. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Marek Vasut <marex@denx.de> Acked-by: Marek Vasut <marex@denx.de>
* | serial: ns16550: use DIV_ROUND_CLOSEST macro to compute the divisorMasahiro Yamada2014-07-22-7/+3
| | | | | | | | | | | | | | | | | | The function still returns the same value. The comment block is no longer necessary because our intention is clear enough by using DIV_ROUND_CLOSEST() macro. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* | serial: ns16550: drop CONFIG_OMAP1610 from the special caseMasahiro Yamada2014-07-22-6/+0
|/ | | | | | | | | | | | | | | | | | | If CONFIG_OMAP1610 is defined, the code returning the fixed value (26) is enabled. But this case is covered by the following code. (CONFIG_SYS_NS16550_CLK + (gd->baudrate * (MODE_X_DIV / 2))) / (MODE_X_DIV * gd->baudrate) = (48000000 + (115200 * (16 / 2))) / (16 * 115200) = 48921600 / 1843200 = 26 The "#ifdef CONFIG_OMAP1610" was added by commit 6f21347d more than ten years ago. In those days, the divide-and-round was not used. I guess that is why this weird code was added here. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Tom Rini <trini@ti.com> Cc: Rishi Bhattacharya <rishi@ti.com>
* serial_mxc: disable new features of autobaud detectionEric Nelson2014-05-28-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | Bit 7 of UCR3 is described in the i.MX3x/i.MX5x/i.MX6x reference manuals as follows: Autobaud Detection Not Improved-. Disables new features of autobaud detection (See Baud Rate Automatic Detection Protocol, for more details). 0 Autobaud detection new features selected 1 Keep old autobaud detection mechanism On at least i.MX6DQ, i.MX6DLS and i.MX53, the "new features" occasionally cause the receiver to get out of sync and continuously produce received characters of '\xff'. This patch disables the "new feature" on all boards, since there's no support for auto-baud in U-Boot on any of them. More details are available in this post on i.MX Community: https://community.freescale.com/message/403254 Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com> Tested-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Stefano Babic <sbabic@denx.de>
* serial: nsl16550: add hw flow control supportKaricheri, Muralidharan2014-05-12-0/+6
| | | | | | | | keystone serial hw support hw flow control. This patch enables hw flow control for keystone EVMs as an optional feature based on CONFIG_SERIAL_HW_FLOW_CONTROL. Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
* bd_info: remove bi_barudrate member from struct bd_infoMasahiro Yamada2014-05-12-7/+3
| | | | | | | | | | | | | | | | | gd->bd->bi_baudrate is a copy of gd->baudrate. Since baudrate is a common feature for all architectures, keep gd->baudrate only. It is true that bi_baudrate was passed to the kernel in that structure but it was a long time ago. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Tom Rini <trini@ti.com> Cc: Simon Glass <sjg@chromium.org> Cc: Wolfgang Denk <wd@denx.de> Cc: Heiko Schocher <hs@denx.de> Acked-by: Michal Simek <monstr@monstr.eu> (For microblaze)
* Merge branch 'u-boot/master'Albert ARIBAUD2014-05-09-11/+11
|\ | | | | | | | | | | | | Conflicts: drivers/net/Makefile (trivial merge)
| * serial: zynq: Fix typo in suffix function nameMichal Simek2014-05-06-3/+3
| | | | | | | | | | | | | | 's/zynq_serial_initalize/zynq_serial_initialize/g' serial_initialize is used by all serial drivers. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
| * serial: zynq: Remove sparse warningsMichal Simek2014-05-06-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Warnings: drivers/serial/serial_zynq.c:181:1: warning: symbol 'uart_zynq0_init' was not declared. Should it be static? drivers/serial/serial_zynq.c:181:1: warning: symbol 'uart_zynq0_setbrg' was not declared. Should it be static? drivers/serial/serial_zynq.c:181:1: warning: symbol 'uart_zynq0_getc' was not declared. Should it be static? drivers/serial/serial_zynq.c:181:1: warning: symbol 'uart_zynq0_tstc' was not declared. Should it be static? drivers/serial/serial_zynq.c:181:1: warning: symbol 'uart_zynq0_putc' was not declared. Should it be static? drivers/serial/serial_zynq.c:181:1: warning: symbol 'uart_zynq0_puts' was not declared. Should it be static? drivers/serial/serial_zynq.c:182:22: warning: symbol 'uart_zynq_serial0_device' was not declared. Should it be static? drivers/serial/serial_zynq.c:184:1: warning: symbol 'uart_zynq1_init' was not declared. Should it be static? drivers/serial/serial_zynq.c:184:1: warning: symbol 'uart_zynq1_setbrg' was not declared. Should it be static? drivers/serial/serial_zynq.c:184:1: warning: symbol 'uart_zynq1_getc' was not declared. Should it be static? drivers/serial/serial_zynq.c:184:1: warning: symbol 'uart_zynq1_tstc' was not declared. Should it be static? drivers/serial/serial_zynq.c:184:1: warning: symbol 'uart_zynq1_putc' was not declared. Should it be static? drivers/serial/serial_zynq.c:184:1: warning: symbol 'uart_zynq1_puts' was not declared. Should it be static? drivers/serial/serial_zynq.c:185:22: warning: symbol 'uart_zynq_serial1_device' was not declared. Should it be static? Signed-off-by: Michal Simek <michal.simek@xilinx.com>
* | k2hk: add support for k2hk SOC and EVMVitaly Andrianov2014-04-17-0/+8
|/ | | | | | | | | | | | | | k2hk EVM is based on Texas Instruments Keystone2 Hawking/Kepler SoC. Keystone2 SoC has ARM v7 Cortex-A15 MPCore processor. Please refer the ti/k2hk_evm/README for details on the board, build and other information. This patch add support for keystone architecture and k2hk evm. Signed-off-by: Vitaly Andrianov <vitalya@ti.com> Signed-off-by: Murali Karicheri <m-karicheri2@ti.com> Signed-off-by: WingMan Kwok <w-kwok2@ti.com> Signed-off-by: Sandeep Nair <sandeep_n@ti.com>
* sandbox: Allow Ctrl-C to work in sandboxSimon Glass2014-03-17-1/+5
| | | | | | | | | | | It is useful for Cltl-C to be handled by U-Boot as it is on other boards. But it is also useful to be able to terminate U-Boot with Ctrl-C. Add an option to enable signals while in raw mode, and make this the default. Add an option to leave the terminal cooked, which is useful for redirecting output. Signed-off-by: Simon Glass <sjg@chromium.org>
* sandbox: Add LCD driverSimon Glass2014-03-17-0/+4
| | | | | | | | | | | | | Add a simple LCD driver which uses SDL to display the image. We update the image regularly, while still providing for reasonable performance. Adjust the common lcd code to support sandbox. For command-line runs we do not want the LCD to be displayed, so add a --show_lcd option to enable it. Tested-by: Che-Liang Chiou <clchiou@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
generated by cgit v1.1 at 2024-11-05 11:38:42 +0000