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path: root/drivers/i2c/busses/i2c-eg20t.c
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2011-12-18i2c-eg20t: correct the driver init order of pch_i2c_probe()Feng Tang
Before registering an adapter to i2c subsystem, we need make sure driver is ready for incoming i2c xfer, becasue the i2c_add_adapter() may trigger a i2c device driver's proble function which may start some real i2c xfer. I met this issue when integrating a TSC2007 i2c touch screen device with the i2c-eg20t driver. This patch will call request_irq() and hw init before calling i2c_add_adapter(). Signed-off-by: Feng Tang <feng.tang@intel.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-10-29i2c-eg20t: Add initialize processing in case i2c-error occursTomoya MORINAGA
In case disconnecting physical connection, need to initialize i2c device for retry access. This patch adds initialize process in case bus-idle fails and Lost arbitration. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-10-29i2c-eg20t: Fix flag setting issueTomoya MORINAGA
Currently, in case occurring abnormal event, internal flag variable(=pch_event_flag) is not reset. This patch fixes the issue. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-10-29i2c-eg20t: add stop sequence in case wait-event timeout occursTomoya MORINAGA
add stop sequence in case wait-event timeout in write processing. (read processing already had it) Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-10-29i2c-eg20t: Separate error processingTomoya MORINAGA
Error processing for NACK or wait-event must be precessed separately. So divide wait-event error processing into NACK-receiving and timeout. Add arbitration lost processing. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-10-29i2c-eg20t: Fix 10bit access issueTomoya MORINAGA
Reported-by: Jeffrey (Sheng-Hui) Chu <jeffchu@broadcom.com> Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-10-29i2c-eg20t: Modify returned value s32 to longTomoya MORINAGA
Type of wait_event_timeout is long not s32. This patch replaces s32 with long. Additionally, delete negative processing(ret < 0). Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-10-29i2c-eg20t: Fix bus-idle waiting issueTomoya MORINAGA
Currently, when checking whether bus is idle or not, if timeout occurs, this function always returns success(zero). This patch fixes the issue. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-07-27i2c-eg20t : Fix the issue of Combined R/W transfer modeTomoya MORINAGA
issue-1 In case combined transfer mode fails halfway, the processing must be stopped halfway. However currently, the processing is continued. This patch breaks the processing. issue-2 Currently, pch_i2c_xfer returns read/write size at that time. However pch_i2c_xfer must return the number of messages to be read/written. This patch modifies correctly. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-07-27i2c-eg20t : Support Combined R/W transfer modeTomoya MORINAGA
Currently, Combined R/W transfer mode is not supported. This patch enables Combined R/W transfer mode. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-05-11i2c-eg20t: Support new device ML7223 IOHTomoya MORINAGA
Support new device OKI SEMICONDUCTOR ML7223 IOH(Input/Output Hub). The ML7223 IOH is for MP(Media Phone) use. The ML7223 is companion chip for Intel Atom E6xx series. The ML7223 is completely compatible for Intel EG20T PCH. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-03-21Merge branches 'for-2639/i2c/i2c-ce4100-v6', 'for-2639/i2c/i2c-eg20t-v3' and ↵Ben Dooks
'for-2639/i2c/i2c-imx' into for-linus/2639/i2c-2
2011-03-08i2c-eg20t: include slab.h for memory allocationsWolfram Sang
Fixes (with v2.6.38-rc3/parisc/parisc-allmodconfig): src/drivers/i2c/busses/i2c-eg20t.c:720: error: implicit declaration of function 'kzalloc' src/drivers/i2c/busses/i2c-eg20t.c:790: error: implicit declaration of function 'kfree' Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Cc: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-03-02i2c-eg20t: support new device OKI SEMICONDUCTOR ML7213 IOHTomoya MORINAGA
Support new device OKI SEMICONDUCTOR ML7213 IOH. The ML7213 which is for IVI(In-Vehicle Infotainment) is a companion chip for the Atom E6xx series and compatible with the Intel EG20T PCH. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-01-04i2c-eg20t: add driver for Intel EG20TTomoya MORINAGA
I2C driver for Intel EG20T PCH Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Reviewed-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Qi Wang <qi.wang@intel.com> [ben-linux@fluff.org: reworded commit message] Signed-off-by: Ben Dooks <ben-linux@fluff.org>