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path: root/drivers/i2c/s3c24x0_i2c.c
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* 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: 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>
* i2c: samsung: register i2c busses for Exynso5420 and Exynos5250Naveen Krishna Ch2013-12-06-48/+176
| | | | | | | | This patch adds the U_BOOT_I2C_ADAP_COMPLETE defines for channels on Exynos5420 and Exynos5250 and also adds support for init function for hsi2c channels Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
* driver:i2c:s3c24x0: fix clock init for hsi2cPiotr Wilczek2013-12-05-1/+3
| | | | | | | | | Fix clock value initialisation for Exynos other than Exynos5 for hsi2c. Signed-off-by: Piotr Wilczek <p.wilczek@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Cc: Minkyu Kang <mk7.kang@samsung.com> Cc: Heiko Schocher <hs@denx.de>
* driver:i2c:s3c24x0: adapt driver to new i2cPiotr Wilczek2013-12-05-56/+96
| | | | | | | | | | | | | | | | This patch adapts the s3c24x0 driver to the new i2c framework. Config file is modified for all the boards that use the driver. Signed-off-by: Piotr Wilczek <p.wilczek@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> CC: Minkyu Kang <mk7.kang@samsung.com> CC: Heiko Schocher <hs@denx.de> CC: Inderpal Singh <inderpal.singh@linaro.org> CC: David Müller <d.mueller@elsoft.ch> CC: Chander Kashyap <k.chander@samsung.com> CC: Lukasz Majewski <l.majewski@samsung.com> Tested-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> Reviewed-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
* i2c: s3c24xx: add hsi2c controller supportNaveen Krishna Ch2013-10-17-51/+579
| | | | | | | | | | | Add support for hsi2c controller available on exynos5420. Note: driver currently supports only fast speed mode 100kbps Change-Id: I02555b1dc8f4ac21c50aa5158179768563c92f43 Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> Signed-off-by: Vadim Bendebury <vbendeb@chromium.org> Signed-off-by: R. Chandrasekar <rc.sekar@samsung.com>
* exynos: i2c: Change FDT bus setup code to enumerate ports correctlySimon Glass2013-10-17-7/+18
| | | | | | | | | | | | | | | | | | | | | | At present the i2c ports are enumerated in a strange way - the fdtdec_find_aliases_for_id() function is used, but then the ID returned is ignored and the ports are renumbered. The effect is the same provided that the device tree has the ports in the same order, or uses aliases, and has no gaps, but it is not correct. Adjust the code to use the function as intended. This will allows device tree aliases to change the device order if required. As a result, the i2c_busses variable is dropped. We can't be sure that there are no 'holes' in the list of buses, so must check the whole array. Note: it seems that non-FDT operation is now broken in this drive and will need to be reinstated for upstream. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/59369 Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
* exynos: i2c: Fix i2c driver to handle NACKs properlyNaveen Krishna Ch2013-10-17-124/+90
| | | | | | | | | | | | | The Exynos5 i2c driver does not handle NACKs properly. This change: - fixes the NACK processing problem (do not continue transaction if address cycle was NACKed) - eliminates a fair amount of duplicate code Signed-off-by: Vadim Bendebury <vbendeb@chromium.org> Reviewed-by: Simon Glass <sjg@google.com> Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
* Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk2013-07-24-17/+1
| | | | | | Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
* EXYNOS: Resolve the i2c compilation errorAmar2013-07-10-8/+1
| | | | | | | | | | | | | | | | This patch resolves the below mentioned compilation error of i2c driver for non-FDT case Compilation error: s3c24x0_i2c.c: In function 'board_i2c_init': s3c24x0_i2c.c:544:18: error: 'CONFIG_MAX_I2C_NUM' undeclared (first use in this function) s3c24x0_i2c.c:544:18: note: each undeclared identifier is reported only once for each function it appears in s3c24x0_i2c.c:545:3: warning: implicit declaration of function Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com> Signed-off-by: Amar <amarendra.xt@samsung.com> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
* EXYNOS5: I2C: Add FDT and non-FDT support for I2CAmar2013-06-24-2/+10
| | | | | | | | | This patch updates the function board_i2c_init() to add support for both FDT and non-FDT for I2C, and initialise the I2C channels. Signed-off-by: Amar <amarendra.xt@samsung.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
* I2C: S3C24X0: Bug fixes in i2c_transferRajeshwari Shinde2013-03-12-8/+6
| | | | | | | | | | | | | | | | | | This patch corrects the following issues 1) Write the correct M/T Stop value to I2CSTAT after i2c write. According to the spec, after finish the data transmission, we should write a M/T Stop (I2C_MODE_MT | I2C_TXRX_ENA) to I2CSTAT instead of a M/R Stop (I2C_MODE_MR | I2C_TXRX_ENA). 2) Not split the write to I2CSTAT into 2 steps in i2c read. According to the spec, we should write the combined M/R Start value to I2CSTAT after setting the slave address to I2CDS 3) Fix the mistake of making an equality check to an assignment. In the case of I2C write with the zero-length address, while tranfering the data, it should be an equality check (==) instead of an assignment (=). Signed-off-by: Tom Wai-Hong Tam <waihong@chromium.org> Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
* I2C: S3C24X0: Remove the dead codeRajeshwari Shinde2013-03-12-7/+0
| | | | | | | | This revomes the code under #if 0 in the s3c24x0_i2c driver. Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com> Acked-by: Simon Glass <sjg@chromium.org>
* I2C: S3C24X0: Resolve build error for VCMA9Rajeshwari Shinde2013-01-14-1/+3
| | | | | | | | | | | | | | | This patch resolves the following build errors for I2C driver in VCMA9: In file included from s3c24x0_i2c.c:40:0: s3c24x0_i2c.h:38:17: error: field 'id' has incomplete type s3c24x0_i2c.c:70:39: error: 'CONFIG_MAX_I2C_NUM' undeclared here (not in a function) s3c24x0_i2c.c:70:31: warning: 'i2c_bus' defined but not used [-Wunused-variable] s3c24x0_i2c.c:72:12: warning: 'i2c_busses' defined but not used [-Wunused-variable] Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
* I2C: Driver changes for FDT supportRajeshwari Shinde2013-01-08-1/+82
| | | | | | | | | | Functions added to get the I2C bus number and reset I2C bus using FDT node. Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com> Acked-by: Simon Glass <sjg@chromium.org> Acked-by: Heiko Schocher <hs@denx.de> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
* drivers:i2c: Modify I2C driver for Exynos4Piotr Wilczek2012-12-11-7/+12
| | | | | | | | This patch modifies the S3C i2c driver to support both Exynos4 and Exynos5 Signed-off-by: Piotr Wilczek <p.wilczek@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> CC: Minkyu Kang <mk7.kang@samsung.com>
* I2C: Add support for Multi channelRajeshwari Shinde2012-07-31-0/+27
| | | | | | | | This adds multiple i2c channel support for I2C. Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com> Acked-by: Simon Glass <sjg@chromium.org>
* I2C: Modify the I2C driver for EXYNOS5Rajeshwari Shinde2012-07-31-77/+117
| | | | | | | | | | | | | | | | | | | This patch modifies the S3C I2C driver to suppport EXYNOS5. The cahnges made to driver are as follows: - I2C base address is passed as a parameter to many functions to avoid multiple #ifdef - Channel initialisation is moved to a commom funation as it is required by i2c_init. - Hardcoding for I2CCON_ACKGEN removed. - Replaced printf with debug. - Checkpatch issues resolved. - Pinmux setting will be done in board/samsung/smdk5250/smdk5250.c to avoid repeated setting of gpio lines, as it have multi bus support. Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by: Doug Anderson <dianders@chromium.org> Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com> Acked-by: Simon Glass <sjg@chromium.org>
* Add generic support for samsung s3c2440C Nauman2010-10-28-51/+51
| | | | | | | | | | | This patch adds generic support for the Samsung s3c2440 processor. Global s3c24x0 changes to struct members converting from upper case to lower case. Signed-off-by: Craig Nauman <cnauman@diagraph.com> Cc: kevin.morfitt@fearnside-systems.co.uk Signed-off-by: Minkyu Kang <mk7.kang@samsung.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>
* 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>
* s3c24x0: move i2c driver to drivers/i2cJean-Christophe PLAGNIOL-VILLARD2009-03-30-0/+442
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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