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* Merge branch 'i2c/for-next' of ↵Linus Torvalds2013-11-1921-168/+2886
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c changes from Wolfram Sang: - new drivers for exynos5, bcm kona, and st micro - bigger overhauls for drivers mxs and rcar - typical driver bugfixes, cleanups, improvements - got rid of the superfluous 'driver' member in i2c_client struct This touches a few drivers in other subsystems. All acked. * 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (38 commits) i2c: bcm-kona: fix error return code in bcm_kona_i2c_probe() i2c: i2c-eg20t: do not print error message in syslog if no ACK received i2c: bcm-kona: Introduce Broadcom I2C Driver i2c: cbus-gpio: Fix device tree binding i2c: wmt: add missing clk_disable_unprepare() on error i2c: designware: add new ACPI IDs i2c: i801: Add Device IDs for Intel Wildcat Point-LP PCH i2c: exynos5: Remove incorrect clk_disable_unprepare i2c: i2c-st: Add ST I2C controller i2c: exynos5: add High Speed I2C controller driver i2c: rcar: fixup rcar type naming i2c: scmi: remove some bogus NULL checks i2c: sh_mobile & rcar: Enable the driver on all ARM platforms i2c: sh_mobile: Convert to clk_prepare/unprepare i2c: mux: gpio: use reg value for i2c_add_mux_adapter i2c: mux: gpio: use gpio_set_value_cansleep() i2c: Include linux/of.h header i2c: mxs: Fix PIO mode on i.MX23 i2c: mxs: Rework the PIO mode operation i2c: mxs: distinguish i.MX23 and i.MX28 based I2C controller ...
| * i2c: bcm-kona: fix error return code in bcm_kona_i2c_probe()Wei Yongjun2013-11-181-1/+2
| | | | | | | | | | | | | | | | | | Fix to return a negative error code from the bus speed parse error handling case instead of 0. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Reviewed-by: Tim Kryger <tim.kryger@linaro.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: i2c-eg20t: do not print error message in syslog if no ACK receivedAndreas Werner2013-11-171-22/+4Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Using the i2c-eg20t driver and call i2cdetect or probe on the bus, the driver will print a lot of error messages if there was no ACK received. i2cdetect normally print a table with all the available devices. If there is no device on the address, the table will be empty. Currently with the i2c-eg20t driver, the table is not visible because the error messages destroy the table. Error message: pch_i2c_getack return -71 This patch prevent the driver to print the messages to syslog. The pch_i2c_wait_for_check_xfer function is the only one who is calling pch_i2c_getack, so we can delete the function and add the read to pch_i2c_wait_for_check_xfer. If no ACK is received, the Message will be printed as a dbg message. Fixed print message to be a one liner so we can grep for the error message. Tested on Intel Atom E6xx and Eg20t Chipset. Signed-off-by: Andreas Werner <wernerandy@gmx.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: bcm-kona: Introduce Broadcom I2C DriverTim Kryger2013-11-153-0/+919
| | | | | | | | | | | | | | | | | | | | | | | | | | Introduce support for Broadcom Serial Controller (BSC) I2C bus found in the Kona family of Mobile SoCs. FIFO hardware is utilized but only standard mode (100kHz), fast mode (400kHz), fast mode plus (1MHz), and I2C high-speed (3.4 MHz) bus speeds are supported. Signed-off-by: Tim Kryger <tim.kryger@linaro.org> Reviewed-by: Matt Porter <matt.porter@linaro.org> Reviewed-by: Markus Mayer <markus.mayer@linaro.org> [wsa: fixed Kconfig sorting, squashed broken out patches into one] Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: cbus-gpio: Fix device tree bindingTony Lindgren2013-11-151-0/+2
| | | | | | | | | | | | | | | | | | Looks like we're missing two lines needed to make it work properly with device tree. Signed-off-by: Tony Lindgren <tony@atomide.com> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: wmt: add missing clk_disable_unprepare() on errorWei Yongjun2013-11-141-0/+1
| | | | | | | | | | | | | | | | | | Add the missing clk_disable_unprepare() before return from wmt_i2c_reset_hardware() in the error handling case. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Cc: stable@kernel.org # 3.11+
| * i2c: designware: add new ACPI IDsMika Westerberg2013-11-141-0/+2
| | | | | | | | | | | | | | | | Newer Intel PCHs with LPSS have the same Designware I2C controllers than Haswell but the ACPI IDs differ. Add these IDs to the driver list. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: i801: Add Device IDs for Intel Wildcat Point-LP PCHJames Ralston2013-11-142-0/+4
| | | | | | | | | | | | | | This patch adds the SMBus Device IDs for the Intel Wildcat Point-LP PCH. Signed-off-by: James Ralston <james.d.ralston@intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: exynos5: Remove incorrect clk_disable_unprepareSachin Kamat2013-11-141-5/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | clk_disable_unprepare in remove causes an imbalance and hence gives the below crash on module remove. While at it also remove some duplicate code from probe. / $ rmmod i2c-exynos5 [ 6.996374] ------------[ cut here ]------------ [ 6.999523] WARNING: CPU: 2 PID: 1137 at drivers/clk/clk.c:842 clk_disable+0x18/0x24() [ 7.007403] Modules linked in: i2c_exynos5(-) [ 7.011747] CPU: 2 PID: 1137 Comm: rmmod Not tainted 3.12.0-next-20131105-00083-g16f4799-dirty #21 [ 7.020696] [<c0014e0c>] (unwind_backtrace+0x0/0xf4) from [<c0011784>] (show_stack+0x10/0x14) [ 7.029190] [<c0011784>] (show_stack+0x10/0x14) from [<c037acd4>] (dump_stack+0x7c/0xb0) [ 7.037255] [<c037acd4>] (dump_stack+0x7c/0xb0) from [<c001e0ac>] (warn_slowpath_common+0x6c/0x88) [ 7.046190] [<c001e0ac>] (warn_slowpath_common+0x6c/0x88) from [<c001e164>] (warn_slowpath_null+0x1c/0x24) [ 7.055818] [<c001e164>] (warn_slowpath_null+0x1c/0x24) from [<c02dcde4>] (clk_disable+0x18/0x24) [ 7.064670] [<c02dcde4>] (clk_disable+0x18/0x24) from [<bf0002d4>] (exynos5_i2c_remove+0x1c/0x34 [i2c_exynos5]) [ 7.074736] [<bf0002d4>] (exynos5_i2c_remove+0x1c/0x34 [i2c_exynos5]) from [<c02274a8>] (__device_release_driver+0x58/0xb0) [ 7.085836] [<c02274a8>] (__device_release_driver+0x58/0xb0) from [<c0227b88>] (driver_detach+0xac/0xb0) [ 7.095291] [<c0227b88>] (driver_detach+0xac/0xb0) from [<c02271c0>] (bus_remove_driver+0x4c/0xa0) [ 7.104227] [<c02271c0>] (bus_remove_driver+0x4c/0xa0) from [<c00725dc>] (SyS_delete_module+0x124/0x194) [ 7.113682] [<c00725dc>] (SyS_delete_module+0x124/0x194) from [<c000e2e0>] (ret_fast_syscall+0x0/0x30) [ 7.122957] ---[ end trace 23bb6e4e0bf52196 ]--- Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: i2c-st: Add ST I2C controllerMaxime COQUELIN2013-11-143-0/+883
| | | | | | | | | | | | | | | | | | | | | | | | This patch adds support to SSC (Synchronous Serial Controller) I2C driver. This IP also supports SPI protocol, but this is not the aim of this driver. This IP is embedded in all ST SoCs for Set-top box platorms, and supports I2C Standard and Fast modes. Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: exynos5: add High Speed I2C controller driverNaveen Krishna Ch2013-11-013-0/+782
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adds support for High Speed I2C driver found in Exynos5 and later SoCs from Samsung. Driver only supports Device Tree method. Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> Signed-off-by: Taekgyun Ko <taeggyun.ko@samsung.com> Reviewed-by: Simon Glass <sjg@google.com> Signed-off-by: Yuvaraj Kumar C D <yuvaraj.cd@samsung.com> Signed-off-by: Andrew Bresticker <abrestic@google.com> [wsa: rebased to v3.12-rc4 (no of_i2c.h anymore)] Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: rcar: fixup rcar type namingKuninori Morimoto2013-11-011-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | b720423a2627f045133bec39a31fe2bc0dab86f3 (i2c: rcar: add rcar-H2 support) added R-Car H2 support on i2c-rcar. The R-Car I2C type is based on SoC generation (Gen1 = E1/M1/H1, Gen2 = E2/M2/H2), but added naming was H1/H2 instead of Gen1/Gen2. Gen1/Gen2 is better naming on this driver. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Acked-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: scmi: remove some bogus NULL checksDan Carpenter2013-11-011-3/+3
| | | | | | | | | | | | | | | | | | | | "obj" can't be NULL here. We already know that "pkg->package.elements" gives us a valid pointer so the next pointer after that is also non-NULL. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: sh_mobile & rcar: Enable the driver on all ARM platformsLaurent Pinchart2013-10-311-2/+2
| | | | | | | | | | | | | | | | | | | | | | Renesas ARM platforms are transitioning from single-platform to multi-platform kernels using the new ARCH_SHMOBILE_MULTI. Make the driver available on all ARM platforms to enable it on both ARCH_SHMOBILE and ARCH_SHMOBILE_MULTI, and increase build testing coverage with COMPILE_TEST. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: sh_mobile: Convert to clk_prepare/unprepareLaurent Pinchart2013-10-311-4/+4
| | | | | | | | | | | | | | | | | | Turn clk_enable() and clk_disable() calls into clk_prepare_enable() and clk_disable_unprepare() to get ready for the migration to the common clock framework. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: Include linux/of.h headerSachin Kamat2013-10-304-0/+4
| | | | | | | | | | | | | | | | 'of_match_ptr' is defined in linux/of.h. Include it explicitly to avoid build breakage in the future. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: mxs: Fix PIO mode on i.MX23Marek Vasut2013-10-061-11/+29
| | | | | | | | | | | | | | | | | | | | The i.MX23 I2C controller is also capable of PIO, but needs a little harder push to behave. The controller needs to be reset after every PIO/DMA operation for some reason, otherwise in rare cases, the controller can hang or emit bytes onto the bus. Signed-off-by: Marek Vasut <marex@denx.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: mxs: Rework the PIO mode operationMarek Vasut2013-10-061-102/+176
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Analyze and rework the PIO mode operation. The PIO mode operation was unreliable on MX28, by analyzing the bus with LA, the checks for when data were available or were to be sent were wrong. The PIO WRITE has to be completely reworked as it multiple problems. The MX23 datasheet helped here, see comments in the code for details. The problems boil down to: - RUN bit in CTRL0 must be set after DATA register was written - The PIO transfer must be 4 bytes long tops, otherwise use clock stretching. Both of these fixes are implemented. The PIO READ operation can only be done for up to four bytes as we are unable to read out the data from the DATA register fast enough. This patch also tries to document the investigation within the code. Signed-off-by: Marek Vasut <marex@denx.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: mxs: distinguish i.MX23 and i.MX28 based I2C controllerJuergen Beisert2013-10-061-6/+34
| | | | | | | | | | | | | | | | | | | | It seems the PIO mode does not work, or at least not like it works on a i.MX28. Each short transfer needs about one second (without an error message) but does not send anything on the I2C lines. Signed-off-by: Juergen Beisert <jbe@pengutronix.de> Signed-off-by: Marek Vasut <marex@denx.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: remove redundant of_match_ptrSachin Kamat2013-10-032-2/+2
| | | | | | | | | | | | | | | | The data structure of_match_ptr() protects is always compiled in. Hence of_match_ptr() is not needed. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: bfin-twi: Remove casting the return value which is a void pointerJingoo Han2013-09-301-3/+3
| | | | | | | | | | | | | | | | | | Casting the return value which is a void pointer is redundant. The conversion from void pointer to any other pointer type is guaranteed by the C programming language. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: xiic: Remove casting the return value which is a void pointerJingoo Han2013-09-301-1/+1
| | | | | | | | | | | | | | | | | | Casting the return value which is a void pointer is redundant. The conversion from void pointer to any other pointer type is guaranteed by the C programming language. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: rcar: use per-device clockGuennadi Liakhovetski2013-09-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Using the same clock for all device instances is non-portable and obtaining clock references by an ID without using a device pointer is discouraged. This is also not needed, because on platforms, where this driver is used, suitable clocks are available for the I2C controllers, that are children of the peripheral clock and just pass its rate 1-to-1 to controllers. This patch switches the driver to obtain references to correct clocks. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: rcar: fix clk_get() error handlingGuennadi Liakhovetski2013-09-301-3/+3
| | | | | | | | | | | | | | | | When clk_get() fails, it returns an error code, not a NULL. This patch fixes such an error handling bug. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: rcar: add Device Tree supportGuennadi Liakhovetski2013-09-301-2/+19
| | | | | | | | | | | | | | | | This patch adds Device Tree support to the i2c-rcar driver and respective documentation. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: rcar: get clock rate only once and simplify calculationGuennadi Liakhovetski2013-09-301-7/+13
| | | | | | | | | | | | | | | | | | | | There is no need to repeatedly query clock frequency, where it is not expected to change. The complete loop can also trivially be replaced with a simple division. A further loop below the one, being simplified, could also be replaced, but that would get more complicated. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: rcar: (cosmetic) remove superfluous parenthesisGuennadi Liakhovetski2013-09-301-1/+1
| | | | | | | | | | | | | | | | A recent patch added even more superfluous parenthesis to those, which already were there. Remove them again. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* | tree-wide: use reinit_completion instead of INIT_COMPLETIONWolfram Sang2013-11-159-10/+10
| | | | | | | | | | | | | | | | | | | | | | | | Use this new function to make code more comprehensible, since we are reinitialzing the completion, not initializing. [akpm@linux-foundation.org: linux-next resyncs] Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Linus Walleij <linus.walleij@linaro.org> (personally at LCE13) Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge remote-tracking branch 'grant/devicetree/next' into for-nextRob Herring2013-11-076-15/+20
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| * | of/irq: Use irq_of_parse_and_map()Thierry Reding2013-10-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace some instances of of_irq_map_one()/irq_create_of_mapping() and of_irq_to_resource() by the simpler equivalent irq_of_parse_and_map(). Signed-off-by: Thierry Reding <treding@nvidia.com> Acked-by: Rob Herring <rob.herring@calxeda.com> [grant.likely: resolved conflicts with core code renames] Signed-off-by: Grant Likely <grant.likely@linaro.org>
| * | i2c: omap: Clear ARDY bit twiceTaras Kondratiuk2013-10-101-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Initially commit cb527ede1bf6ff2008a025606f25344b8ed7b4ac "i2c-omap: Double clear of ARDY status in IRQ handler" added a workaround for undocumented errata ProDB0017052. But then commit 1d7afc95946487945cc7f5019b41255b72224b70 "i2c: omap: ack IRQ in parts" refactored code and missed one of ARDY clearings. So current code violates errata. It causes often i2c bus timeouts on my Pandaboard. This patch adds a second clearing in place. Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Taras Kondratiuk <taras.kondratiuk@linaro.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Cc: stable@kernel.org
| * | i2c: i2c-stu300: replace platform_driver_probe to support deferred probingWolfram Sang2013-10-101-6/+5Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Subsystems like pinctrl and gpio rightfully make use of deferred probing at core level. Now, deferred drivers won't be retried if they don't have a .probe function specified in the driver struct. Fix this driver to have that, so the devices it supports won't get lost in a deferred probe. Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * | i2c: i2c-mxs: replace platform_driver_probe to support deferred probingWolfram Sang2013-10-101-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Subsystems like pinctrl and gpio rightfully make use of deferred probing at core level. Now, deferred drivers won't be retried if they don't have a .probe function specified in the driver struct. Fix this driver to have that, so the devices it supports won't get lost in a deferred probe. Acked-by: Marek Vasut <marex@denx.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * | i2c: i2c-imx: replace platform_driver_probe to support deferred probingWolfram Sang2013-10-101-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Subsystems like pinctrl and gpio rightfully make use of deferred probing at core level. Now, deferred drivers won't be retried if they don't have a .probe function specified in the driver struct. Fix this driver to have that, so the devices it supports won't get lost in a deferred probe. Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * | i2c: i2c-designware-platdrv: replace platform_driver_probe to support ↵Wolfram Sang2013-10-101-2/+3
| |/ | | | | | | | | | | | | | | | | | | | | | | deferred probing Subsystems like pinctrl and gpio rightfully make use of deferred probing at core level. Now, deferred drivers won't be retried if they don't have a .probe function specified in the driver struct. Fix this driver to have that, so the devices it supports won't get lost in a deferred probe. Reported-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* / drivers: clean-up prom.h implicit includesRob Herring2013-10-103-0/+5
|/ | | | | | | | Powerpc is a mess of implicit includes by prom.h. Add the necessary explicit includes to drivers in preparation of prom.h cleanup. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Grant Likely <grant.likely@linaro.org>
* i2c: ismt: initialize DMA bufferJames Ralston2013-09-281-0/+3
| | | | | | | | | This patch adds code to initialize the DMA buffer to compensate for possible hardware data corruption. Signed-off-by: James Ralston <james.d.ralston@intel.com> [wsa: changed to use 'sizeof'] Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* i2c: designware: 10-bit addressing mode enabling if I2C_DYNAMIC_TAR_UPDATE ↵Chew, Chiau Ee2013-09-271-6/+20
| | | | | | | | | | | | | | | | is set According to Designware I2C spec, if I2C_DYNAMIC_TAR_UPDATE is set to 1, the 10-bit addressing mode is controlled by IC_10BITADDR_MASTER bit of IC_TAR register instead of IC_CON register. The IC_10BITADDR_MASTER in IC_CON register becomes read-only copy. Since I2C_DYNAMIC_TAR_UPDATE value can't be detected from hardware register, so we will always set the IC_10BITADDR_MASTER bit in both IC_CON and IC_TAR register whenever 10-bit addresing mode is requested by user application. Signed-off-by: Chew, Chiau Ee <chiau.ee.chew@intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* i2c: mv64xxx: Do not use writel_relaxed()Thierry Reding2013-09-271-2/+2
| | | | | | | | | | The driver is used on PowerPC which don't provide writel_relaxed(). This breaks the c2k and prpmc2800 default configurations. To fix the build, turn the calls to writel_relaxed() into writel(). The impacts for ARM should be minimal. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* i2c: mv64xxx: Fix some build warningsThierry Reding2013-09-271-5/+7
| | | | | | | | | | Some functions and variables are only used if the configuration selects HAVE_CLK. Protect them with a corresponding #ifdef CONFIG_HAVE_CLK block to avoid compiler warnings. Signed-off-by: Thierry Reding <treding@nvidia.com> [wsa: added marker to #endif] Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* i2c: s3c2410: fix clk_disable/clk_unprepare WARNingsKim Phillips2013-09-271-2/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit d16933b33914a6dff38a4ecbe8edce44a17898e8 "i2c: s3c2410: Move location of clk_prepare_enable() call in probe function" refactored clk_enable and clk_disable calls yet neglected to remove the clk_disable_unprepare call in the module's remove(). It helps remove warnings on an arndale during unbind: echo 12c90000.i2c > /sys/bus/platform/devices/12c90000.i2c/driver/unbind ------------[ cut here ]------------ WARNING: CPU: 0 PID: 2548 at drivers/clk/clk.c:842 clk_disable+0x18/0x24() Modules linked in: CPU: 0 PID: 2548 Comm: bash Not tainted 3.11.0-next-20130916-00003-gf4bddbc #6 [<c0014d48>] (unwind_backtrace+0x0/0xf8) from [<c00117d0>] (show_stack+0x10/0x14) [<c00117d0>] (show_stack+0x10/0x14) from [<c0361be8>] (dump_stack+0x6c/0xac) [<c0361be8>] (dump_stack+0x6c/0xac) from [<c001d864>] (warn_slowpath_common+0x64/0x88) [<c001d864>] (warn_slowpath_common+0x64/0x88) from [<c001d8a4>] (warn_slowpath_null+0x1c/0x24) [<c001d8a4>] (warn_slowpath_null+0x1c/0x24) from [<c02c4a64>] (clk_disable+0x18/0x24) [<c02c4a64>] (clk_disable+0x18/0x24) from [<c028d0b0>] (s3c24xx_i2c_remove+0x28/0x70) [<c028d0b0>] (s3c24xx_i2c_remove+0x28/0x70) from [<c0217a10>] (platform_drv_remove+0x18/0x1c) [<c0217a10>] (platform_drv_remove+0x18/0x1c) from [<c0216358>] (__device_release_driver+0x58/0xb4) [<c0216358>] (__device_release_driver+0x58/0xb4) from [<c02163d0>] (device_release_driver+0x1c/0x28) [<c02163d0>] (device_release_driver+0x1c/0x28) from [<c02153c0>] (unbind_store+0x58/0x90) [<c02153c0>] (unbind_store+0x58/0x90) from [<c0214c90>] (drv_attr_store+0x20/0x2c) [<c0214c90>] (drv_attr_store+0x20/0x2c) from [<c01032c0>] (sysfs_write_file+0x168/0x198) [<c01032c0>] (sysfs_write_file+0x168/0x198) from [<c00ae1c0>] (vfs_write+0xb0/0x194) [<c00ae1c0>] (vfs_write+0xb0/0x194) from [<c00ae594>] (SyS_write+0x3c/0x70) [<c00ae594>] (SyS_write+0x3c/0x70) from [<c000e3e0>] (ret_fast_syscall+0x0/0x30) ---[ end trace 4c9f9403066f57a6 ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 2548 at drivers/clk/clk.c:751 clk_unprepare+0x14/0x1c() Modules linked in: CPU: 0 PID: 2548 Comm: bash Tainted: G W 3.11.0-next-20130916-00003-gf4bddbc #6 [<c0014d48>] (unwind_backtrace+0x0/0xf8) from [<c00117d0>] (show_stack+0x10/0x14) [<c00117d0>] (show_stack+0x10/0x14) from [<c0361be8>] (dump_stack+0x6c/0xac) [<c0361be8>] (dump_stack+0x6c/0xac) from [<c001d864>] (warn_slowpath_common+0x64/0x88) [<c001d864>] (warn_slowpath_common+0x64/0x88) from [<c001d8a4>] (warn_slowpath_null+0x1c/0x24) [<c001d8a4>] (warn_slowpath_null+0x1c/0x24) from [<c02c5834>] (clk_unprepare+0x14/0x1c) [<c02c5834>] (clk_unprepare+0x14/0x1c) from [<c028d0b8>] (s3c24xx_i2c_remove+0x30/0x70) [<c028d0b8>] (s3c24xx_i2c_remove+0x30/0x70) from [<c0217a10>] (platform_drv_remove+0x18/0x1c) [<c0217a10>] (platform_drv_remove+0x18/0x1c) from [<c0216358>] (__device_release_driver+0x58/0xb4) [<c0216358>] (__device_release_driver+0x58/0xb4) from [<c02163d0>] (device_release_driver+0x1c/0x28) [<c02163d0>] (device_release_driver+0x1c/0x28) from [<c02153c0>] (unbind_store+0x58/0x90) [<c02153c0>] (unbind_store+0x58/0x90) from [<c0214c90>] (drv_attr_store+0x20/0x2c) [<c0214c90>] (drv_attr_store+0x20/0x2c) from [<c01032c0>] (sysfs_write_file+0x168/0x198) [<c01032c0>] (sysfs_write_file+0x168/0x198) from [<c00ae1c0>] (vfs_write+0xb0/0x194) [<c00ae1c0>] (vfs_write+0xb0/0x194) from [<c00ae594>] (SyS_write+0x3c/0x70) [<c00ae594>] (SyS_write+0x3c/0x70) from [<c000e3e0>] (ret_fast_syscall+0x0/0x30) ---[ end trace 4c9f9403066f57a7 ]--- Signed-off-by: Kim Phillips <kim.phillips@linaro.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* Remove GENERIC_HARDIRQ config optionMartin Schwidefsky2013-09-131-4/+2Star
| | | | | | | | After the last architecture switched to generic hard irqs the config options HAVE_GENERIC_HARDIRQS & GENERIC_HARDIRQS and the related code for !CONFIG_GENERIC_HARDIRQS can be removed. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* i2c: davinci: Fix bad dev_get_platdata() conversionOlof Johansson2013-09-101-1/+1
| | | | | | | | | | | | | commit 6d4028c644e (i2c: use dev_get_platdata()) did a bad conversion of this one case: drivers/i2c/busses/i2c-davinci.c: In function 'davinci_i2c_probe': drivers/i2c/busses/i2c-davinci.c:665:2: warning: passing argument 1 of 'dev_get_platdata' from incompatible pointer type [enabled by default] Reviewed-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Olof Johansson <olof@lixom.net>
* i2c: rcar: add rcar-H2 supportNguyen Viet Dung2013-09-041-2/+33
| | | | | | | This patch modify I2C driver of rcar-H1 to usable on both rcar-H1 and rcar-H2. Signed-off-by: Nguyen Viet Dung <nv-dung@jinso.co.jp> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* i2c: sirf: retry 3 times as sometimes we get random noack and timeoutZhiwu Song2013-08-281-1/+2
| | | | | | | | | let i2c core retry 3 times as sometimes we get random noack and timeout even when we access an existing i2c client. Signed-off-by: Zhiwu Song <Zhiwu.Song@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* i2c: sirf: support reverse direction of addressZhiwu Song2013-08-281-0/+4
| | | | | | | | | if users set I2C_M_REV_DIR_ADDR, revert the direction of address. Signed-off-by: Zhiwu Song <Zhiwu.Song@csr.com> Signed-off-by: Rongjun Ying <rongjun.ying@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* i2c: sirf: fix the typo for setting bitrate to less than 100kZhiwu Song2013-08-281-1/+1
| | | | | | | | | there is a typo before, it makes the final bitrate wrong, this patch fixes it. Signed-off-by: Zhiwu Song <Zhiwu.Song@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* i2c: sirf: we need to wait I2C_RESET status in resumeZhiwu Song2013-08-281-0/+2
| | | | | | | | this fixes the issue that we lost to wait the i2c reset finished. Signed-off-by: Zhiwu Song <Zhiwu.Song@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* i2c: sirf: reset i2c controller early after we get a noackZhiwu Song2013-08-281-9/+18
| | | | | | | | | | Due to hardware ANOMALY, we need to reset I2C earlier after we get NOACK while accessing non-existing clients, otherwise we will get errors even we access existing clients later Signed-off-by: Zhiwu Song <Zhiwu.Song@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* i2c: designware: get SDA hold time, HCNT and LCNT configuration from ACPIMika Westerberg2013-08-281-0/+34
| | | | | | | | | | | | Some Intel LPSS I2C devices make the SDA hold time and *CNT parameters available via SSCN (standard mode) and FMCN (fast mode) ACPI methods. Implement support for this so that we check whether an ACPI method exists and if it does, fill in the SDA hold time and *CNT values to the device private structure for core to use. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-10-12 04:19:25 +0200