summaryrefslogtreecommitdiff
path: root/drivers/i2c
Commit message (Collapse)AuthorAgeLines
* ppc4xx: Move ppc4xx headers to powerpc include directoryStefan Roese2010-09-23-2/+2
| | | | | | | | | This patch moves some ppc4xx related headers from the common include directory (include/) to the powerpc specific one (arch/powerpc/include/asm/). This way to common include directory is not so cluttered with files. Signed-off-by: Stefan Roese <sr@denx.de>
* i2c, omap24xx: set bus_initialized only after relocation.Heiko Schocher2010-09-19-1/+3
| | | | | | | Portions of this work were supported by funding from the CE Linux Forum. Signed-off-by: Heiko Schocher <hs@denx.de>
* Prepare v2010.09-rc1v2010.09-rc1Wolfgang Denk2010-09-10-1/+0
| | | | | | Coding style cleanup. Signed-off-by: Wolfgang Denk <wd@denx.de>
* i2c: rewrite mvtwsi, support orion5x and kirkwoodAlbert Aribaud2010-08-30-409/+341
| | | | | | | | | This rewrite of the mvtwsi driver is 25% smaller and much faster and simpler than the previous code. Signed-off-by: Albert Aribaud <albert.aribaud@free.fr> Acked-by: Prafulla Wadaskar<prafulla@marvell.com> Acked-by: Heiko Schocher<hs@denx.de>
* i2c: rename kirkwood_i2c to mvtwsiAlbert Aribaud2010-08-30-1/+1
| | | | | | | | | This driver is not kirkwood-specific and can also be used e.g. by orion5x. Rename to a SoC-neutral name. Signed-off-by: Albert Aribaud <albert.aribaud@free.fr> Acked-by: Prafulla Wadaskar<prafulla@marvell.com> Acked-by: Heiko Schocher<hs@denx.de>
* i2c: omap2+: change header guard to be genericNishanth Menon2010-08-23-2/+2
| | | | | | | | | | | | | Make the header guard to be generic to stop conflicting with omap2 i2c header file arch/arm/include/asm/arch-omap24xx/i2c.h Cc: Steve Sakoman <steve@sakoman.com> Cc: Heiko <hs@denx.de> Cc: Sandeep Paulraj <s-paulraj@ti.com> Cc: Wolfang Denk <wd@denx.de> Signed-off-by: Nishanth Menon <nm@ti.com> Acked-by: Steve Sakoman <steve@sakoman.com>
* ARMV7: Modify i2c driver for more reliable operation on OMAP4Steve Sakoman2010-08-05-10/+25
| | | | | | | | | | | | This patch modifies the init routine to follow the TRM recommendations. It also modifies the i2c_read_byte function to reflect subtle differences between the i2c controller in OMAP3 and OMAP4. Signed-off-by: Steve Sakoman <steve@sakoman.com> Acked-by: Nishanth Menon <menon.nishanth@gmail.com> Acked-by: Heiko Schocher <hs@denx.de> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
* i2c: soft_i2c: add simple GPIO implementationMike Frysinger2010-07-22-0/+52
| | | | | | | | | | | Since the vast majority of GPIO I2C implementations behave the same way, support the common GPIO framework with default settings. This adds two new defines CONFIG_SOFT_I2C_GPIO_{SCL,SDA} so that boards which want GPIO I2C support need only define these. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Tested-by: Thomas Chou <thomas@wytron.com.tw>
* ARMV7: Restructure OMAP i2c driver to allow code sharing between OMAP3 and OMAP4Steve Sakoman2010-07-05-3/+180
| | | | | | | This patch modifies the omap24xx driver so that it will also work with OMAP4. Signed-off-by: Steve Sakoman <steve@sakoman.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
* Blackfin: TWI/I2C: implement multibus supportMike Frysinger2010-05-05-61/+108
| | | | | | | In order to do this cleanly, the register accesses have to be converted to a C struct (base pointer), so do that in the process. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* fsl_i2c: Added a callpoint for i2c_board_late_initRichard Retanubun2010-04-19-3/+13
| | | | | | | This patch adds a callpoint in i2c_init that allows board specific i2c board initialization (typically for i2c bus reset) that is called after i2c_init operations, allowing the i2c_board_late_init function to use the pre-configured i2c bus speed and slave address.
* Replace "#include <asm-$ARCH/$FILE>" with "#include <asm/$FILE>"Peter Tyser2010-04-13-1/+1
| | | | | | | | | | The appropriate include/asm-$ARCH directory should already by symlinked to include/asm so using the whole "asm-$ARCH" path is unnecessary. This change should also allow us to move the include/asm-$ARCH directories into their appropriate lib/$ARCH/ directories. Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
* i2c: Move PPC4xx I2C driver into drivers/i2c directoryStefan Roese2010-04-06-0/+440
| | | | | | | | This patch moves the PPC4xx specific I2C device driver into the I2C drivers directory. All 4xx config headers are updated to include this driver. Signed-off-by: Stefan Roese <sr@denx.de>
* mod change 755 => 644 for multiple filesThomas Weber2010-03-21-0/+0
| | | | | | | | I executed 'find . -name "*.[chS]" -perm 755 -exec chmod 644 {} \;' Signed-off-by: Thomas Weber <swirl@gmx.li> Add some more: neither Makefile nor config.mk need execute permissions. Signed-off-by: Wolfgang Denk <wd@denx.de>
* convert common files to new SoC accessJens Scharsig2010-02-12-5/+6
| | | | | | | | * add's a warning to all files, which need update to new SoC access * convert common files in cpu/../at91 and a lot of drivers to use c stucture SoC access Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de>
* SPEAr : i2c driver support added for SPEAr SoCsVipin KUMAR2010-01-23-0/+332
| | | | | | | SPEAr SoCs contain a synopsys i2c controller. This patch adds the driver for this IP. Signed-off-by: Vipin <vipin.kumar@st.com>
* Kirkwood: Upgated licencing for files imported from linux source to GPLv2 or ↵Prafulla Wadaskar2010-01-23-5/+18
| | | | | | | | | | | | | | later These are few files directly imported from Linux kernel source. Those are not modifyed at all ar per strategy. These files contains source with GPLv2 only whereas u-boot expects GPLv2 or latter These files are updated for the same from prior permission from original writes Acked-by: Nicolas Pitre <nico@marvell.com> Signed-off-by: Prafulla Wadaskar <prafulla@marvell.com>
* Add a unified s3c24x0 header filekevin.morfitt@fearnside-systems.co.uk2009-11-27-5/+1
| | | | | | | | | | This patch adds a unified s3c24x0 cpu header file that selects the header file for the specific s3c24x0 cpu from the SOC and CPU configs defined in board config file. This removes the current chain of s3c24-type #ifdef's from the s3c24x0 code. Signed-off-by: Kevin Morfitt <kevin.morfitt@fearnside-systems.co.uk> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
* Move s3c24x0 header files to asm-arm/arch-s3c24x0/kevin.morfitt@fearnside-systems.co.uk2009-11-27-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch moves the s3c24x0 header files from include/ to include/asm-arm/arch-s3c24x0/. checkpatch.pl showed 2 errors and 3 warnings. The 2 errors were both due to a non-UTF8 character in David M?ller's name: ERROR: Invalid UTF-8, patch and commit message should be encoded in UTF-8 #489: FILE: include/asm-arm/arch-s3c24x0/s3c2410.h:3: + * David M?ller ELSOFT AG Switzerland. d.mueller@elsoft.ch As David's name correctly contains a non-UTF8 character I haven't fixed these errors. The 3 warnings were all because of the use of 'volatile' in s3c24x0.h: WARNING: Use of volatile is usually wrong: see Documentation/volatile-considered-harmful.txt #673: FILE: include/asm-arm/arch-s3c24x0/s3c24x0.h:35: +typedef volatile u8 S3C24X0_REG8; +typedef volatile u16 S3C24X0_REG16; +typedef volatile u32 S3C24X0_REG32; I'll fix these errors in another patch. Tested by running MAKEALL for ARM8 targets and ensuring there were no new errors or warnings. Signed-off-by: Kevin Morfitt <kevin.morfitt@fearnside-systems.co.uk> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
* at91: Extended soft_i2c driver for AT91SAM9263 SoCDaniel Gorsulowski2009-11-23-0/+5
| | | | | | | | While hard_i2c support is not available (see http://lists.denx.de/pipermail/u-boot/2009-March/049751.html), this patch enables soft_i2c on AT91SAM9263 SoC. Signed-off-by: Daniel Gorsulowski <Daniel.Gorsulowski@esd.eu>
* OMAP2/3: I2C: Add support for second and third busDirk Behme2009-11-16-67/+99
| | | | | | | | | | Add support to use second and third I2C bus, too. Bus 0 is still the default, but by calling i2c_set_bus_num(1/2) before doing I2C accesses, code can switch to bus 1 and 2, too. Don't forget to switch back afterwards, then. Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>
* new PCA9564 i2c bridge driverValentin Yakovenkov2009-10-30-0/+190
| | | | | Signed-off-by: Valentin Yakovenkov <yakovenkov@niistt.ru> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: TWI/I2C: implement bus speed get/set functionsMike Frysinger2009-10-30-11/+48
| | | | | | While we're here, improve the speed calculation a bit to match the HRM. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: TWI/I2C: add timeout to transferMike Frysinger2009-10-30-3/+12
| | | | | | | The current transfer code relies on ctrlc() to abort transfers, but this requires user interactivity. Naturalize the process with a timeout. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Clean-up of s3c24x0 drivers excluding nand driverkevin.morfitt@fearnside-systems.co.uk2009-10-13-134/+139
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch re-formats the arm920t s3c24x0 driver files, excluding the nand driver, in preparation for changes to add support for the Embest SBC2440-II Board. The changes are as follows: - re-indent the code using Lindent - make sure register layouts are defined using a C struct - replace the upper-case typedef'ed C struct names with lower case non-typedef'ed ones - make sure registers are accessed using the proper accessor functions - run checkpatch.pl and fix any error reports It assumes the following patch has been applied first: - [U-Boot][PATCH-ARM] CONFIG_SYS_HZ fix for ARM902T S3C24X0 Boards, 05/09/2009 - patches 1/4 and 2/4 of this series Tested on an Embest SBC2440-II Board with local u-boot patches as I don't have any s3c2400 or s3c2410 boards but need this patch applying before I can submit patches for the SBC2440-II Board. Also, temporarily modified sbc2410x, smdk2400, smdk2410 and trab configs to use the mtd nand driver (which isn't used by any board at the moment), ran MAKEALL for all ARM9 targets and no new warnings or errors were found. Signed-off-by: Kevin Morfitt <kevin.morfitt@fearnside-systems.co.uk> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
* fsl_i2c: Do not generate STOP after read.Joakim Tjernlund2009-09-28-5/+6
| | | | | | | | | __i2c_read always ends with a STOP condition thereby releasing the bus. It is cleaner to do the STOP magic in i2c_read(), like i2c_write() does. This may also help future multimaster systems which wants to hold on to the bus until all transactions are finished. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
* fsl_i2c: Impl. AN2919, rev 5 to calculate FDR/DFSRJoakim Tjernlund2009-09-28-35/+55
| | | | | | | | | The latest AN2919 has changed the way FDR/DFSR should be calculated. Update the driver according to spec. However, Condition 2 is not accounted for as it is not clear how to do so. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Acked-by: Wolfgang Grandegger <wg@grandegger.com>
* fsl_i2c: Add CONFIG_FSL_I2C_CUSTOM_{DFSR/FDR}Joakim Tjernlund2009-09-28-3/+11
| | | | | | | | | Some boards need a higher DFSR value than the spec currently recommends so give these boards the means to define there own. For completeness, add CONFIG_FSL_I2C_CUSTOM_FDR too. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
* fsl_i2c: Wait for STOP condition to propagateJoakim Tjernlund2009-09-28-4/+8
| | | | | | | | | | | | | After issuing a STOP one must wait until the STOP has completed on the bus before doing something new to the controller. Also add an extra read of SR as the manual mentions doing that is a good idea. Remove surplus write of CR just before a write, isn't required and could potentially disturb the I2C bus. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
* fsl_i2c: increase I2C timeout values and make them configurableTimur Tabi2009-09-06-4/+20
| | | | | | | | | | | | | | | | The value of I2C_TIMEOUT in fsl_i2c.c has several problems. First, it is defined as CONFIG_HZ/4, but it is used as a count of microseconds, so it makes no sense to derive it from a clock rate. Second, the current value (250) is too low for some boards, so it needs to be increased. Third, the timeout necessary for multiple-master arbitration is larger than the timeout for basic read/write operations, so we shouldn't have a single constant for both timeouts. Finally, it would be nice if we could override these values on a per-board basis. Signed-off-by: Timur Tabi <timur@freescale.com> Acked-by: Wolfgang Denk <wd@denx.de> Tested-by: Peter Tyser <ptyser@xes-inc.com> Acked-by: Peter Tyser <ptyser@xes-inc.com>
* Minor coding style cleanup.Wolfgang Denk2009-08-10-1/+0
| | | | Signed-off-by: Wolfgang Denk <wd@denx.de>
* OMAP I2C Fix the sampling clock.Tom Rix2009-07-28-7/+67
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This problem is seen on Zoom1 and Zoom2 in the startup and when i2c probe is used Before : In: serial Out: serial Err: serial timed out in wait_for_bb: I2C_STAT=1000 timed out in wait_for_bb: I2C_STAT=1000 timed out in wait_for_bb: I2C_STAT=1000 timed out in wait_for_pin: I2C_STAT=1000 I2C read: I/O error timed out in wait_for_bb: I2C_STAT=1000 timed out in wait_for_bb: I2C_STAT=1000 Die ID #327c00020000000004013ddd05026013 Hit any key to stop autoboot: 0 OMAP3 Zoom1# i2c probe Valid chip addresses:timed out in wait_for_bb: I2C_STAT=1000 02 03 04 05 06 07 08 09 0A 0B 0C 0D <snip> After : In: serial Out: serial Err: serial Die ID #327c00020000000004013ddd05026013 Hit any key to stop autoboot: 0 OMAP3 Zoom1# i2c probe Valid chip addresses: 48 49 4A 4B The addresses are for the twl4030. The prescalar that converts the function clock to the sampling clock is hardcoded to 0. The reference manual recommends 7 if the function clock is 96MHz. Instead of just changing the hardcoded values, the prescalar is calculated from the value I2C_IP_CLK. The i2c #defines are in kHz. The speed passed into the i2c init routine is in Hz. To be consistent, change the defines to be in Hz. The timing calculations are based on what is done in the linux 2.6.30 kernel in drivers/i2c/buses/i2c_omap.c as apposed to what is done in TRM. The major variables in the timing caculations are specified as #defines that can be overriden as required. The variables and their defaults are I2C_IP_CLK SYSTEM_CLOCK_96 I2C_INTERNAL_SAMPLING_CLK 19200000 I2C_FASTSPEED_SCLL_TRIM 6 I2C_FASTSPEED_SCLH_TRIM 6 I2C_HIGHSPEED_PHASE_ONE_SCLL_TRIM I2C_FASTSPEED_SCLL_TRIM I2C_HIGHSPEED_PHASE_ONE_SCLH_TRIM I2C_FASTSPEED_SCLH_TRIM I2C_HIGHSPEED_PHASE_TWO_SCLL_TRIM I2C_FASTSPEED_SCLL_TRIM I2C_HIGHSPEED_PHASE_TWO_SCLH I2C_FASTSPEED_SCLH_TRIM This was runtime verified on Zoom1, Zoom2, Beagle and Overo. The 400kHz and 3.4M cases were verifed on test Zoom1, Zoom2, Beagle and Overo configurations. Testing for omap2 will be done in a second step as Nishanth and Jean-Christophe commented. Signed-off-by: Tom Rix <Tom.Rix@windriver.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Heiko Schocher <hs@denx.de>
* arm, i2c: added support for the TWSI I2C InterfaceHeiko Schocher2009-07-28-0/+485
| | | | Signed-off-by: Heiko Schocher <hs@denx.de>
* i2c, mpc83xx: add CONFIG_SYS_I2C_INIT_BOARD for fsl_i2cHeiko Schocher2009-07-21-0/+6
| | | | | | | | | | | | | | | | | | | | | | This patch adds the possibility to call a board specific i2c bus reset routine for the fsl_i2c bus driver, and adds this option for the keymile kmeter1 board. The deblock sequence for this board is implemented and tested in the following way: CR = 0x20 (release SDA and SCL pin) CR = 0xa0 (start read) dummy read dummy read if 2. dummy read == 0x00 3. dummy read CR = 0x80 (SDA and SCL now 1 SR = 0x86) CR = 0x00 (Modul reset SR=0x81) CR = 0x80 (SDA and SCL = 1, SR = 0x81) Signed-off-by: Heiko Schocher <hs@denx.de>
* Blackfin: TWI/I2C: fix pure writesPeter Meerwald2009-06-30-2/+2
| | | | | | | | | | | If doing a pure write with register address and data (not a read/write combo transfer), we don't set the initial transfer length properly which ends up causing only the register address to be transferred. While we're here, fix the i2c_write() parameter description of the buffer. Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* i2c: Update references to individual i2c commandsPeter Tyser2009-06-12-1/+1
| | | | | | | | The individual i2c commands imd, imm, inm, imw, icrc32, iprobe, iloop, and isdram are no longer available so all references to them have been updated to the new form of "i2c <cmd>". Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
* i2c: Create common default i2c_[set|get]_bus_speed() functionsPeter Tyser2009-06-12-14/+0
| | | | | | | | | | | | | New default, weak i2c_get_bus_speed() and i2c_set_bus_speed() functions replace a number of architecture-specific implementations. Also, providing default functions will allow all boards to enable CONFIG_I2C_CMD_TREE. This was previously not possible since the tree-form of the i2c command provides the ability to display and modify the i2c bus speed which requires i2c_[set|get]_bus_speed() to be present. Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
* tsi108_i2c: Add i2c_init() stub functionPeter Tyser2009-06-12-0/+9
| | | | | | | Add the i2c_init() function so that the tsi108_i2c.c driver fits U-Boot's standard I2C API which is utilized by cmd_i2c.c Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
* Merge branch 'master' of git://git.denx.de/u-boot-armWolfgang Denk2009-04-02-0/+1089
|\
| * s3c24x0: move i2c driver to drivers/i2cJean-Christophe PLAGNIOL-VILLARD2009-03-30-0/+443
| | | | | | | | Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
| * davinci: move i2c driver to drivers/i2cJean-Christophe PLAGNIOL-VILLARD2009-03-30-0/+330
| | | | | | | | Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
| * s3c44b0: move i2c driver to drivers/i2cJean-Christophe PLAGNIOL-VILLARD2009-03-29-0/+316
| | | | | | | | Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* | soft_i2c.c compiler/linker errorJens Scharsig2009-03-31-5/+1
|/ | | | | | | | | | | | | | | | This patch fix the compiler/linker errors common/cmd_i2c.c:1252: undefined reference to `i2c_get_bus_speed' common/cmd_i2c.c:1256: undefined reference to `i2c_set_bus_speed' if board use CONFIG_I2C_CMD_TREE and CONFIG_I2C_MULTI_BUS is not uesd/undef (wrong define order) and removes additional empty lines Signed-off-by: Jens Scharsig <esw@bus-elektronik.de>
* 8xx: add support for new keymile kmsupx4 board.Heiko Schocher2009-03-18-1/+1
| | | | | | | | | | | | | This patch adds support for the kmsupx4 board from Keymile, based on a Freescale MPC852T CPU - serial console on SMC1 - 32 MB SDRAM - 32 MB NOR Flash - Ethernet over SCC3 - I2C Bitbang Signed-off-by: Heiko Schocher <hs@denx.de>
* 83xx, i2c: add mux support for fsl_i2cHeiko Schocher2009-03-05-1/+21
| | | | | | | | | | This patch adds I2C mux support for the fsl_i2c driver. This allows you to add "new" i2c busses, which are reached over i2c muxes. For more infos, please look in the README and search for CONFIG_I2C_MUX. Signed-off-by: Heiko Schocher <hs@denx.de> Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
* i.MX31: Start the I2C clock on driver initialisationGuennadi Liakhovetski2009-02-14-0/+6
| | | | | | | | | | | | i.MX31 powers on with most clocks running, so, after a power on this explicit clock start up is not required. However, as Linux boots it disables most clocks to save power. This includes the I2C clock. If we then soft reboot from Linux the I2C clock stays off. This breaks the phycore, which has its environment in I2C EEPROM. Fix the problem by explicitly starting the clock in I2C driver initialisation routine. Signed-off-by: Guennadi Liakhovetski <lg@denx.de> Ack-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* Merge branch 'master' of git://git.denx.de/u-boot-armWolfgang Denk2009-02-01-0/+24
|\
| * OMAP3: Add I2C supportDirk Behme2009-01-24-0/+24
| | | | | | | | | | | | Add I2C support. Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>
* | Blackfin: overhaul i2c driverMike Frysinger2009-01-28-0/+286
| | | | | | | | | | | | | | | | | | | | | | The current Blackfin i2c driver does not work properly with certain devices due to it breaking up transfers incorrectly. This is a rewrite of the driver and relocates it to the newer place in the source tree. Also remove duplicated I2C speed defines in Blackfin board configs and disable I2C slave address usage since it isn't implemented. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* | soft_i2c.c add option for repeated start in i2c_read()Andrew Dyer2009-01-27-1/+11
|/ | | | | | | | | | | | | | | | This patch adds a #define to optionally change the behaviour of i2c_read() in soft_i2c.c to send an I2C repeated start instead of a stop-start between sending the device address pointer write and reading back the data. The current behaviour is retained as the default. While most devices will work either way, I have a smart battery(*) that requires repeated start, and someone at some point found a device that required a stop-start. (*) http://www.inspired-energy.com/Standard_Products/NL2054/NL2054%20Rev1.0%20Data%20Sheet.pdf Signed-off-by: Andrew Dyer <adyer@righthandtech.com>
generated by cgit v1.1 at 2024-11-08 22:23:40 +0000