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* SPI API improvementsHaavard Skinnemoen2008-06-03-21/+58
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch gets rid of the spi_chipsel table and adds a handful of new functions that makes the SPI layer cleaner and more flexible. Instead of the spi_chipsel table, each board that wants to use SPI gets to implement three hooks: * spi_cs_activate(): Activates the chipselect for a given slave * spi_cs_deactivate(): Deactivates the chipselect for a given slave * spi_cs_is_valid(): Determines if the given bus/chipselect combination can be activated. Not all drivers may need those extra functions however. If that's the case, the board code may just leave them out (assuming they know what the driver needs) or rely on the linker to strip them out (assuming --gc-sections is being used.) To set up communication parameters for a given slave, the driver needs to call spi_setup_slave(). This returns a pointer to an opaque spi_slave struct which must be passed as a parameter to subsequent SPI calls. This struct can be freed by calling spi_free_slave(), but most driver probably don't want to do this. Before starting one or more SPI transfers, the driver must call spi_claim_bus() to gain exclusive access to the SPI bus and initialize the hardware. When all transfers are done, the driver must call spi_release_bus() to make the bus available to others, and possibly shut down the SPI controller hardware. spi_xfer() behaves mostly the same as before, but it now takes a spi_slave parameter instead of a spi_chipsel function pointer. It also got a new parameter, flags, which is used to specify chip select behaviour. This may be extended with other flags in the future. This patch has been build-tested on all powerpc and arm boards involved. I have not tested NIOS since I don't have a toolchain for it installed, so I expect some breakage there even though I've tried fixing up everything I could find by visual inspection. I have run-time tested this on AVR32 ATNGW100 using the atmel_spi and DataFlash drivers posted as a follow-up. I'd like some help testing other boards that use the existing SPI API. But most of all, I'd like some comments on the new API. Is this stuff usable for everyone? If not, why? Changed in v4: - Build fixes for various boards, drivers and commands - Provide common struct spi_slave definition that can be extended by drivers - Pass a struct spi_slave * to spi_cs_activate and spi_cs_deactivate - Make default bus and mode build-time configurable - Override default SPI bus ID and mode on mx32ads and imx31_litekit. Changed in v3: - Add opaque struct spi_slave for controller-specific data associated with a slave. - Add spi_claim_bus() and spi_release_bus() - Add spi_free_slave() - spi_setup() is now called spi_setup_slave() and returns a struct spi_slave - soft_spi now supports four SPI modes (CPOL|CPHA) - Add bus parameter to spi_setup_slave() - Convert the new i.MX32 SPI driver - Convert the new MC13783 RTC driver Changed in v2: - Convert the mpc8xxx_spi driver and the mpc8349emds board to the new API. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Tested-by: Guennadi Liakhovetski <lg@denx.de>
* Big white-space cleanup.Wolfgang Denk2008-05-21-2/+2
| | | | | | | | | | | This commit gets rid of a huge amount of silly white-space issues. Especially, all sequences of SPACEs followed by TAB characters get removed (unless they appear in print statements). Also remove all embedded "vim:" and "vi:" statements which hide indentation problems. Signed-off-by: Wolfgang Denk <wd@denx.de>
* Minor alignment of output, 2nd try.Wolfgang Denk2007-08-12-1/+1
| | | | | | Also update CHANGELOG Signed-off-by: Wolfgang Denk <wd@denx.de>
* Minor alignment of outputWolfgang Denk2007-08-12-1/+1
| | | | Signed-off-by: Wolfgang Denk <wd@denx.de>
* cpu/[7a-ln-z]*: Remove obsolete references to CONFIG_COMMANDSJon Loeliger2007-07-09-2/+2
| | | | Signed-off-by: Jon Loeliger <jdl@freescale.com>
* cpu/ non-mpc*: Augment CONFIG_COMMANDS tests with defined(CONFIG_CMD_*).Jon Loeliger2007-07-04-1/+1
| | | | | | | | | | | | | | This is a compatibility step that allows both the older form and the new form to co-exist for a while until the older can be removed entirely. All transformations are of the form: Before: #if (CONFIG_COMMANDS & CFG_CMD_AUTOSCRIPT) After: #if (CONFIG_COMMANDS & CFG_CMD_AUTOSCRIPT) || defined(CONFIG_CMD_AUTOSCRIPT) Signed-off-by: Jon Loeliger <jdl@freescale.com>
* Move "ar" flags to config.mk to allow for silent "make -s"Wolfgang Denk2006-10-09-1/+1
| | | | Based on patch by Mike Frysinger, 20 Jun 2006
* Add support for a saving build objects in a separate directory.Marian Balakowicz2006-09-01-10/+14
| | | | | | | | | | | | | | | | | | | | | Modifications are based on the linux kernel approach and support two use cases: 1) Add O= to the make command line 'make O=/tmp/build all' 2) Set environement variable BUILD_DIR to point to the desired location 'export BUILD_DIR=/tmp/build' 'make' The second approach can also be used with a MAKEALL script 'export BUILD_DIR=/tmp/build' './MAKEALL' Command line 'O=' setting overrides BUILD_DIR environent variable. When none of the above methods is used the local build is performed and the object files are placed in the source directory.
* GCC-4.x fixes: clean up global data pointer initialization for all boards.Wolfgang Denk2006-03-31-1/+2
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* Patch by Scott McNutt, 25 Apr 2004:wdenk2004-05-19-17/+138
| | | | | | | Add Nios GDB/JTAG Console support: - Add stubs to support gdb via JTAG. - Add support for console over JTAG. - Minor cleanup.
* * Patch by Peter Ryser, 20 Feb 2004:wdenk2004-02-23-2/+5
| | | | | | | | | | | | | Add support for the Xilinx ML300 platform * Patch by Stephan Linz, 17 Feb 2004: Fix watchdog support for NIOS * Patch by Josh Fryman, 16 Feb 2004: Fix byte-swapping for cfi_flash.c for different bus widths * Patch by Jon Diekema, 14 Jeb 2004: Remove duplicate "FPGA Support" notes from the README file
* * Patches by Reinhard Meyer, 14 Feb 2004:wdenk2004-02-23-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | - update board/emk tree; use common flash driver - Corrected tested bits in machine check exception in cpu/mpc5xxx/traps.c [adapted for other PPC CPUs -- wd] - Added support for the M48T08 on the EVAL5200 board in rtc/mk48t59.c * Patch by Jon Diekema, 13 Feb 2004: Call show_boot_progress() whenever POST "FAILED" is printed. * Patch by Nishant Kamat, 13 Feb 2004: Add support for TI OMAP1610 H2 Board Fixes for cpu/arm926ejs/interrupt.c (based on Richard Woodruff's patch for arm925, 16 Oct 03) Fix for a timer bug in OMAP1610 Innovator Add support for CS0 (ROM)/CS3 (Flash) boot in OMAP1610 Innovator and H2 * Patches by Stephan Linz, 12 Feb 2004: - add support for NIOS timer with variable period preload counter value - prepare POST framework support for NIOS targets * Patch by Denis Peter, 11 Feb 2004: add POST support for the MIP405 board
* Patches by Stephan Linz, 30 Jan 2004:wdenk2004-02-09-1/+159
| | | | | | | | | | | | | | | | | | | | | | | | | 1: - board/altera/common/flash.c:flash_erase(): o allow interrupts befor get_timer() call o check-up each erased sector and avoid unexpected timeouts - board/altera/dk1c20/dk1s10.c:board_early_init_f(): o enclose sevenseg_set() in cpp condition - remove the ASMI configuration for DK1S10_standard_32 (never present) - fix some typed in mistakes in the NIOS documentation 2: - split DK1C20 configuration into several header files: o two new files for each NIOS CPU description o U-Boot related part is remaining in DK1C20.h 3: - split DK1S10 configuration into several header files: o two new files for each NIOS CPU description o U-Boot related part is remaining in DK1S10.h 4: - Add support for the Microtronix Linux Development Kit NIOS CPU configuration at the Altera Nios Development Kit, Stratix Edition (DK-1S10) 5: - Add documentation for the Altera Nios Development Kit, Stratix Edition (DK-1S10) 6: - Add support for the Nios Serial Peripharel Interface (SPI) (master only) 7: - Add support for the common U-Boot SPI framework at RTC driver DS1306
* * Fix problems caused by Robert Schwebel's cramfs patchwdenk2004-01-04-3/+698
| | | | | | | | | | | | * Patch by Scott McNutt, 02 Jan 2004: Add support for the Nios Active Serial Memory Interface (ASMI) on Cyclone devices * Patch by Andrea Marson, 16 Dec 2003: Add support for the PPChameleon ME and HI modules * Patch by Yuli Barcohen, 22 Dec 2003: Add support for Motorola DUET ADS board (MPC87x/88x)
* Patches by Stephan Linz, 11 Dec 2003:wdenk2004-01-03-0/+6
| | | | | | | | | | | | | | - more documentation for NIOS port - new struct nios_pio_t, struct nios_spi_t - Reconfiguration for NIOS Development Kit DK1C20: o move board related code from board/dk1c20 to board/altera/dk1c20 o create a new common source path board/altera/common and move generic flash access stuff into it o change/expand configuration file DK1C20.h - Add support for NIOS Development Kit DK1S10 - Add status LED support for NIOS systems - Add dual 7-segment LED support for Altera NIOS DevKits
* * Patches by Xianghua Xiao, 15 Oct 2003:wdenk2003-10-15-1/+0
| | | | | | | | - Added Motorola CPU 8540/8560 support (cpu/85xx) - Added Motorola MPC8540ADS board support (board/mpc8540ads) - Added Motorola MPC8560ADS board support (board/mpc8560ads) * Minor code cleanup
* * Patch by Scott McNutt, 04 Oct 2003:wdenk2003-10-08-0/+1162
- add support for Altera Nios-32 CPU - add support for Nios Cyclone Development Kit (DK-1C20) * Patch by Steven Scholz, 29 Sep 2003: - A second parameter for bootm overwrites the load address for "Standalone Application" images. - bootm sets environment variable "filesize" to the resulting (uncompressed) data length for "Standalone Application" images when autostart is set to "no". Now you can do something like if bootm $fpgadata $some_free_ram ; then fpga load 0 $some_free_ram $filesize fi * Patch by Denis Peter, 25 Sept 2003: add support for the MIP405 Rev. C board
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