summaryrefslogtreecommitdiff
path: root/drivers/i2c
Commit message (Collapse)AuthorAgeLines
* MLK-12492-1 mx6: fix type style problems introduced by patch MLK-12483Ye Li2016-03-04-2/+2
| | | | | | | Some type style problems found by review-commits for previous patch MLK-12483, fix them in this patch and re-check. Signed-off-by: Ye Li <ye.li@nxp.com>
* MLK-12483-4 mx6: Modify drivers to disable fused modulesYe Li2016-03-04-0/+10
| | | | | | | | | | Add the fuse checking in drivers, when the module is disabled in fuse, the driver will not work. Changed drivers: BEE, GPMI, APBH-DMA, ESDHC, FEC, QSPI, ECSPI, I2C, USB-EHCI, GIS, LCDIF. Signed-off-by: Ye Li <ye.li@nxp.com>
* MLK-10812-1 imx:mx6 add i2c4 supportPeng Fan2015-05-05-2/+5
| | | | | | I2C4 support for i.MX Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
* MLK-10215 Add elan init in i.MX6SL-EVK boardHaibo Chen2015-04-29-0/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | EPDC board contain a elan touch screen, this screen is a i2c slave. If this EPDC board connect to i.MX6SL-EVK board, after uboot boot up, if we do i2c operation, like i2c probe, then the i2c bus block. This is due to the elan touch screen i2c slave. This device needs to do some initialization opearation before its i2c operation, otherwise this i2c device pull down the i2c clk line, and make the i2c bus hang. This means elan needs a special flow on i2c before its address is acked, otherwise the i2c bus will be hang. This patch is a workaround, it add a void function which is defined as a weak symbol in i2c driver, and it is called before every i2c operation. In mx6slevk, this function was overwrite to execute elan initialization. So that, for mx6slevk board, it will initialize elan before every i2c operation, but for other boards, it just work as before. Signed-off-by: Haibo Chen <haibo.chen@freescale.com> (cherry picked from commit 4c587b29c423ce61b2471ed20f31ff533d9d8a39) Signed-off-by: Peng Fan <Peng.Fan@freescale.com> Conflicts: arch/arm/include/asm/arch-mx6/mx6sl_pins.h board/freescale/mx6slevk/mx6slevk.c
* MLK-10178-3 i2c:mxc Add i2c support for i.MX7DPeng Fan2015-04-29-1/+21
| | | | | | | | | | Add i2c support for i.MX7D. Signed-off-by: Peng Fan <Peng.Fan@freescale.com> (cherry picked from commit b52cb9d40e71305b7a11b0bbc68fddd8e84e3b17) Conflicts: drivers/i2c/mxc_i2c.c
* lpc32xx: i2c: add LPC32xx I2C interface supportAlbert ARIBAUD \(3ADEV\)2015-04-10-0/+250
| | | | Signed-off-by: Albert ARIBAUD (3ADEV) <albert.aribaud@3adev.fr>
* i2c: mvtwsi: Fix problem with baud rate calculationStefan Roese2015-03-18-8/+9
| | | | | | | | | | | | | | | | | | | | The current implementation for baudrate calculation is incorrect. This part from the formula: "2 ^ (n + 1)" is not equivalent to (1 << n) but to (2 << n)! This patch fixes this and moves this calculation to a function instead of using a macro. This new function is taken from the Linux kernel. This was detected and tested on the Marvell Armada A38x DB-88F6820-GP eval board. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Prafulla Wadaskar <prafulla@marvell.com> Cc: Luka Perkov <luka.perkov@sartura.hr> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Ian Campbell <ijc@hellion.org.uk> Cc: Heiko Schocher <hs@denx.de> Acked-by: Hans de Goede <hdegoede@redhat.com>
* mv_i2c: fix warnings on 64-bit buildsRob Herring2015-03-18-1/+1
| | | | | | | Change addresses to unsigned long to be compatible with 64-bit builds. Signed-off-by: Rob Herring <robh@kernel.org> Cc: Heiko Schocher <hs@denx.de>
* ARM: UniPhier: adjust device trees for business transferMasahiro Yamada2015-03-15-6/+8
| | | | | | | Panasonic's System LSI products, UniPhier SoC family, have been transferred to Socionext Inc. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
* dm: i2c: Add a missing memory allocaton checkSimon Glass2015-03-05-0/+2
| | | | | | | This strdup() is missing a check. Add it. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Heiko Schocher <hs@denx.de>
* dm: Move CONFIG_I2C_COMPAT to KconfigSimon Glass2015-02-19-0/+9
| | | | | | | | | Make this option available in Kconfig and clean up the board that uses it. Note there is also an entry in exynos5-common.h but this affects multiple boards and should be dropped as part of the Samsung I2C migration to driver model. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: Expand and complete Kconfig in drivers/Simon Glass2015-02-12-2/+10
| | | | | | | | Expand the help messages for each driver. Add missing Kconfig for I2C, SPI flash and thermal. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* dm: i2c: Make API accessible even without CONFIG_DMSimon Glass2015-02-12-16/+16
| | | | | | | | | | | | Make the driver model I2C API available always, even if driver model is not enabled. This allows for a 'soft' switch-over, where drivers can use the new structures in code which is compiled but not yet used. This makes migration easier in some cases. Fix up the existing drivers which define their own 'struct i2c_msg'. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Heiko Schocher <hs@denx.de>
* dm: i2c: Add a dm_ prefix to driver model bus speed functionsSimon Glass2015-02-12-8/+3
| | | | | | | | As with i2c_read() and i2c_write(), add a dm_ prefix to the driver model versions of these functions to avoid conflicts. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Heiko Schocher <hs@denx.de>
* i2c: s3c24x0: reduce transmission status timeoutPrzemyslaw Marczak2015-02-12-2/+2
| | | | | | | | | | | | | | If no device is connected to I2C bus, the i2c probe command can take a lot of time for probe each address. This commit reduces the busy timeout to 10ms for standard and high speed modes. This doesn't break the transmission an also allow for properly probe the devices. Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Changes v3: - new commit, after split the next one Tested-by: Simon Glass <sjg@chromium.org>
* dm: i2c: Add two more I2C init functions to the compatibility layerSimon Glass2015-01-29-2/+12
| | | | | | | | These functions are useful in case the board calls them. Also fix a missing parameter caused by applying the wrong patch (actually I failed to send v2 and applied v1 by mistake). Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: i2c: dts: Support an offset-len device tree propertySimon Glass2015-01-29-1/+2
| | | | | | | Since U-Boot can support different offset lengths (0-4 bytes), add a device tree property to specify this. This avoids hard-coding it in the driver. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: i2c: s3c24x0: adjust to dm-i2c apiPrzemyslaw Marczak2015-01-29-43/+194
| | | | | | | | | | | | | | | This commit adjusts the s3c24x0 driver to new i2c api based on driver-model. The driver supports standard and high-speed i2c as previous. Tested on Trats2, Odroid U3, Arndale, Odroid XU3 Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Tested-by: Simon Glass <sjg@chromium.org> Cc: Simon Glass <sjg@chromium.org> Cc: Heiko Schocher <hs@denx.de> Cc: Minkyu Kang <mk7.kang@samsung.com> Acked-by: Simon Glass <sjg@chromium.org>
* dm: i2c-uclass-compat: fix missed argumentPrzemyslaw Marczak2015-01-29-1/+1
| | | | | | | | | This patch fixes build error for CONFIG_DM_I2C_COMPAT. In i2c_get_chip_for_busnum() call, one of argument was missed, which was offset_len. Now it is set to 'alen' as previous. Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Acked-by: Simon Glass <sjg@chromium.org>
* dm: i2c: Move slave details to child platdataSimon Glass2015-01-29-87/+39
| | | | | | | | | | | | | | | | | At present we go through various contortions to store the I2C's chip address in its private data. This only exists when the chip is active so must be set up when it is probed. Until the device is probed we don't actually record what address it will appear on. However, now that we can support per-child platform data, we can use that instead. This allows us to set up the address when the child is bound, and avoid the messy contortions. Unfortunately this is a fairly large change and it seems to be difficult to break it down further. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* dm: core: Add a flag to control sequence numberingSimon Glass2015-01-29-0/+1
| | | | | | | | | | | | | | | | At present we try to use the 'reg' property and device tree aliases to give devices a sequence number. The 'reg' property is often actually a memory address, so the sequence numbers thus-obtained are not useful. It would be better if the devices were just sequentially numbered in that case. In fact neither I2C nor SPI use this feature, so drop it. Some devices need us to look up an alias to number them within the uclass. Add a flag to control this, so it is not done unless it is needed. Adjust the tests to test this new behaviour. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* dm: i2c: Provide an offset length parameter where neededSimon Glass2015-01-29-8/+10
| | | | | | | | | | Rather than assuming that the chip offset length is 1, allow it to be provided. This allows chips that don't use the default offset length to be used (at present they are only supported by the command line 'i2c' command which sets the offset length explicitly). Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Heiko Schocher <hs@denx.de>
* dm: i2c: Add a compatbility layerSimon Glass2015-01-29-0/+99
| | | | | | | | | | | | | For boards which use multiple I2C devices, or for SOCs which support multiple boards, we might want to convert these to driver model at different times. At present this is difficult because we need to either use CONFIG_DM_I2C for a board or not. Add a compatibility layer which implements the old API, thus allowing a board to move to driver model for I2C without requiring that everything it uses is moved in the same commit. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: i2c: Rename driver model I2C functions to permit compatibilitySimon Glass2015-01-29-4/+5
| | | | | | | | | | | Add a dm_ prefix to driver model I2C functions so that we can keep the old ones around. This is a little unfortunate, but on reflection it is too difficult to change the API. We can undo this rename when most boards and drivers are converted to use driver model for I2C. Signed-off-by: Simon Glass <sjg@chromium.org>
* i2c: UniPhier: add driver for UniPhier FIFO-builtin i2c controllerMasahiro Yamada2015-01-29-0/+388
| | | | | | | | | | This commit adds on-chip I2C driver used on newer SoCs of Panasonic UniPhier platform. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Reviewed-by: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org> Acked-by: Heiko Schocher <hs@denx.de>
* i2c: UniPhier: add driver for UniPhier i2c controllerMasahiro Yamada2015-01-29-0/+248
| | | | | | | | | | This commit adds on-chip I2C driver used on some old Panasonic UniPhier SoCs. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Reviewed-by: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org> Acked-by: Heiko Schocher <hs@denx.de>
* i2c: add CONFIG_DM_I2C to KconfigMasahiro Yamada2015-01-29-0/+6
| | | | | | | Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Reviewed-by: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org> Acked-by: Heiko Schocher <hs@denx.de>
* i2c:mxc fix array size of i2c_dataPeng Fan2015-01-08-11/+11
| | | | | | | | | | | We should not hardcode array size of i2c_data to 3. To CONFIG_FSL_LSCH3, there are 4 i2c interface, but not 3. So the size of i2c_data array should be calculated using "ARRAY_SIZE(i2c_bases)". To avoid compile error, move i2c_bases before sram_data structure which contains i2c_data array. Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
* dm: i2c: tegra: Convert to driver modelSimon Glass2014-12-11-247/+119
| | | | | | | | | | | | | | | | | | | | | | This converts all Tegra boards over to use driver model for I2C. The driver is adjusted to use driver model and the following obsolete CONFIGs are removed: - CONFIG_SYS_I2C_INIT_BOARD - CONFIG_I2C_MULTI_BUS - CONFIG_SYS_MAX_I2C_BUS - CONFIG_SYS_I2C_SPEED - CONFIG_SYS_I2C This has been tested on: - trimslice (no I2C) - beaver - Jetson-TK1 It has not been tested on Tegra 114 as I don't have that board. Acked-by: Heiko Schocher <hs@denx.de> Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: i2c: Add a sandbox I2C driverSimon Glass2014-12-11-1/+112
| | | | | | | | | This driver includes some test features such as only supporting certain bus speeds. It passes its I2C traffic through to an emulator. Acked-by: Heiko Schocher <hs@denx.de> Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* dm: i2c: Add I2C emulation driver for sandboxSimon Glass2014-12-11-0/+15
| | | | | | | | | In order to test I2C we need some sort of emulation interface. Add hooks to allow a driver to emulate an I2C device for sandbox. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Heiko Schocher <hs@denx.de> Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* dm: i2c: Add a uclass for I2CSimon Glass2014-12-11-0/+467
| | | | | | | | | | | | | | The uclass implements the same operations as the current I2C framework but makes some changes to make it fit driver model better: - Remove the chip address from API calls - Remove the address length from API calls - Remove concept of 'current' I2C bus - Drop all existing init functions Acked-by: Heiko Schocher <hs@denx.de> Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Simon Glass <sjg@chromium.org>
* i2c: Correct spelling errorMark Tomlinson2014-12-08-3/+3
| | | | | | "diconnect" and "disconnet" should both be "disconnect". Signed-off-by: Mark Tomlinson <mark.tomlinson@alliedtelesis.co.nz>
* i2c: Fix deselection of muxesMark Tomlinson2014-12-08-1/+1
| | | | | | | | | | | Due to an uninitialised variable, when muxes were deselected, any value could be written to the mux control register. On the PCA9548, this could result in multiple channels being selected, thus enabling multiple pull-up resistors, and much bus capacitance. The fix is simply to initialise the written value to zero. Signed-off-by: Mark Tomlinson <mark.tomlinson@alliedtelesis.co.nz>
* linux/kernel.h: sync min, max, min3, max3 macros with LinuxMasahiro Yamada2014-11-23-1/+1
| | | | | | | | | | | | | | | | | | | | U-Boot has never cared about the type when we get max/min of two values, but Linux Kernel does. This commit gets min, max, min3, max3 macros synced with the kernel introducing type checks. Many of references of those macros must be fixed to suppress warnings. We have two options: - Use min, max, min3, max3 only when the arguments have the same type (or add casts to the arguments) - Use min_t/max_t instead with the appropriate type for the first argument Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Pavel Machek <pavel@denx.de> Acked-by: Lukasz Majewski <l.majewski@samsung.com> Tested-by: Lukasz Majewski <l.majewski@samsung.com> [trini: Fixup arch/blackfin/lib/string.c] Signed-off-by: Tom Rini <trini@ti.com>
* blackfin: convert to use CONFIG_SYS_I2C frameworkScott Jiang2014-11-17-142/+60
| | | | Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com>
* adi_i2c: convert to use general io accessors.Scott Jiang2014-11-17-68/+77
| | | | Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com>
* blackfin: rename bfin-twi_i2c driver to adi_i2cScott Jiang2014-11-17-5/+4
| | | | Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com>
* i2c: rcar_i2c: Fix order of restart and clear statusNobuhiro Iwamatsu2014-11-10-2/+2
| | | | | | | | | | In case of repeated START condition, the restart has to be kicked before clear status (MSR register). If it is kicked after clear status, R-Car I2C may transfer data (TXD register) or receive data (RXD register) instead of transferring slave address (MAR register). Signed-off-by: Ryo Kataoka <ryo.kataoka.wt@renesas.com> Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
* drivers/i2c/fsl_i2c: Change CONFIG_I2C_TIMEOUT to 100msShaveta Leekha2014-11-10-1/+1
| | | | | | | | | | | | | | Some slow I2C devices like Power Monitor(ZM7304) at times do not work well with low timeout value, so I2C bus get stuck during read cycle with this device, changing it to 100ms from 10ms works fine A lot of other i2c drivers like mxc and i2c drivers of BOOTROM also use relax timeouts to give sufficient ticks to work well with slower devices Signed-off-by: Shaveta Leekha <shaveta@freescale.com> Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com>
* ppc4xx: Handle i2c stuck on combined xferDirk Eibach2014-11-10-0/+21
| | | | | | | | | | | | ppc4xx i2c master gets stuck on errors while repeated start is active. Can be easily reproduced by "i2c md" on an unpopulated i2c address. There is not stop condition given, scl remains pulled low. The only way out seems to be doing a stop manually and then a soft reset. Signed-off-by: Dirk Eibach <dirk.eibach@gdsys.cc> Reviewed-by: Stefan Roese <sr@denx.de>
* ppc4xx: Fix i2c repeated startDirk Eibach2014-11-10-4/+5
| | | | | | | | | | | | | Debugging some i2c trouble I saw on my scope that repeated start is not working properply. The 4xx even held clock pulled down after transfers. Having a look in the driver I realized that IIC_CNTL_RPST is set on that part of the transfer that should begin with a repeated start. But repeated start is about not sending a stop condition, so IIC_CNTL_RPST has to be set on the last transfer before the repeated start happens. Signed-off-by: Dirk Eibach <dirk.eibach@gdsys.cc> Reviewed-by: Stefan Roese <sr@denx.de>
* i2c: use __weakJeroen Hofstee2014-11-04-6/+2
| | | | | Cc: Heiko Schocher <hs@denx.de> Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
* i2c: designware: Convert driver to multibus/multiadapter frameworkStefan Roese2014-10-29-167/+128
| | | | | | | | | | | | | | | | | | | | | In preparation for the SoCFPGA support of the designware I2C driver, convert this driver to the common CONFIG_SYS_I2C framework. This patch converts all users of this driver, this is: - ST spearxxx boards - AXS101 (ARC700 platform) I couldn't test this patch on those boards. Only compile tested for all spear boards. And tested on SoCFPGA. Signed-off-by: Stefan Roese <sr@denx.de> Reviewed-by: Marek Vasut <marex@denx.de> Acked-by: Alexey Brodkin <abrodkin@synopsys.com> Tested-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Heiko Schocher <hs@denx.de> Cc: Vipin Kumar <vk.vipin@gmail.com> Cc: Jeroen Hofstee <jeroen@myspectrum.nl>
* i2c: mxs: Add support for I2C 1 on i.MX28Marek Vasut2014-10-29-1/+8
| | | | | | | | Add support for I2C bus 1 on the i.MX28. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Stefano Babic <sbabic@denx.de> Cc: Heiko Schocher <hs@denx.de>
* i2c: mxs: Pass the i2c_adapter aroundMarek Vasut2014-10-29-67/+67
| | | | | | | | | | | | This patch permeates the struct i2c_adapter throughout the driver, so that it can be used to determine which adapter should be used. Note that the driver still supports only one adapter. Note that the patch does shuffle mxs_i2c_set_bus_speed() to the top of the driver, but the function remains unchanged. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Stefano Babic <sbabic@denx.de> Cc: Heiko Schocher <hs@denx.de>
* i2c: mxs: Add basic support for i2c frameworkMarek Vasut2014-10-29-21/+30
| | | | | | | | | | | This patch just converts the function prototypes used throughout this driver to match those of the i2c framework. There is so far no functional change. This patch does not do the deeper integration of the framework bits. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Stefano Babic <sbabic@denx.de> Cc: Heiko Schocher <hs@denx.de>
* i2c: mxs: Consolidate hard-coded bus addressMarek Vasut2014-10-29-7/+12
| | | | | | | | | | This patch prepares the MXS I2C driver for the conversion to the new I2C driver framework by pulling out the hard-coded I2C0 address from all the places. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Stefano Babic <sbabic@denx.de> Cc: Heiko Schocher <hs@denx.de>
* i2c: designware: add an implement i2c protosJeroen Hofstee2014-10-25-7/+12
| | | | | | | | | | | Include the i2c header and change the non confirming functions to do so. Cc: Heiko Schocher <hs@denx.de> Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl> Acked-by: Heiko Schocher <hs@denx.de> [trini: Fix i2c_get_bus_num prototype] Signed-off-by: Tom Rini <trini@ti.com>
* tegra: make local functions staticJeroen Hofstee2014-10-25-3/+4
| | | | Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
generated by cgit v1.1 at 2024-11-23 09:11:53 +0000