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| * i2c: i2c-davinci: deprecate class based instantiationWolfram Sang2014-03-28
| | | | | | | | | | | | | | | | | | Warn users that class based instantiation is going away soon in favour of more robust probing and faster bootup times. Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Cc: Sekhar Nori <nsekhar@ti.com> Cc: Kevin Hilman <khilman@deeprootsystems.com>
| * i2c: i2c-bcm2835: deprecate class based instantiationWolfram Sang2014-03-28
| | | | | | | | | | | | | | Warn users that class based instantiation is going away soon in favour of more robust probing and faster bootup times. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: mv64xxx: Fix reset controller handlingMaxime Ripard2014-03-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The reset framework recently gained optional stubs when CONFIG_RESET_CONTROLLER is not selected. It also introduced a function reset_get_optional, that is also dummy-defined whenever the framework isn't enabled, for drivers that needs an optional reset controller. Switch to this function, since the mv64xxx driver is in this case. This also fixes a compilation breakage whenever the reset framework wasn't selected: drivers/i2c/busses/i2c-mv64xxx.c:771:2: error: implicit declaration of function 'devm_reset_control_get' While we're at it, remove the redundant test on dev.of_node surrounding the calls to reset framework functions, since it will either be a valid pointer, an error pointer in the case where we called reset_get_optional without an of_node pointer or if it failed, or NULL if we're not loaded through DT. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: omap: fix usage of IS_ERR_VALUE with pm_runtime_get_syncNishanth Menon2014-03-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | we use IS_ERR_VALUE to check for error values of pm_runtime_get_sync, when the value can only be < 0 in the case of err. Replace the check with a simpler < 0 check. This fixes the coccicheck warnings: linux-2.6/drivers/i2c/busses/i2c-omap.c:1157:5-24: pm_runtime_get_sync returns < 0 as error. Unecessary IS_ERR_VALUE at line 1158 linux-2.6/drivers/i2c/busses/i2c-omap.c:1278:7-26: pm_runtime_get_sync returns < 0 as error. Unecessary IS_ERR_VALUE at line 1279 drivers/i2c/busses/i2c-omap.c:638:5-24: pm_runtime_get_sync returns < 0 as error. Unecessary IS_ERR_VALUE at line 639 Signed-off-by: Nishanth Menon <nm@ti.com> Reviewed-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: efm32: new bus driverUwe Kleine-König2014-03-27
| | | | | | | | | | | | | | | | This was tested on a EFM32GG-DK3750 devboard that has a temperature sensor and an eeprom on its i2c bus. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: exynos5: remove unnecessary cast of void pointerJingoo Han2014-03-13
| | | | | | | | | | | | | | | | | | | | | | Remove unnecessary cast of void pointer, because 'algo_data' of 'struct i2c_adapter' is a void pointer. Casting the 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> Reviewed-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: exynos5: add CONFIG_PM_SLEEP to suspend/resume functionsJingoo Han2014-03-13
| | | | | | | | | | | | | | | | | | | | | | | | | | Add CONFIG_PM_SLEEP to suspend/resume functions to fix the following build warning when CONFIG_PM_SLEEP is not selected. This is because sleep PM callbacks defined by SIMPLE_DEV_PM_OPS are only used when the CONFIG_PM_SLEEP is enabled. warning: 'exynos5_i2c_suspend_noirq' defined but not used [-Wunused-function] warning: 'exynos5_i2c_resume_noirq' defined but not used [-Wunused-function] Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: gpio: OF gpio code does not handle defered probe caseBen Dooks2014-03-13
| | | | | | | | | | | | | | | | | | | | | | | | | | When using device-tree and the i2c-gpio driver is called before the GPIO node has been probed then it needs to correctly defer the probe instead of returning a permanent error that the gpio numbers are not valid. This fixes the following error: /i2c@2: invalid GPIO pins, sda=-517/scl=-517 Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: Add message transfer tracepoints for SMBUS [ver #2]David Howells2014-03-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The SMBUS tracepoints can be enabled thusly: echo 1 >/sys/kernel/debug/tracing/events/i2c/enable and will dump messages that can be viewed in /sys/kernel/debug/tracing/trace that look like: ... smbus_read: i2c-0 a=051 f=0000 c=fa BYTE_DATA ... smbus_reply: i2c-0 a=051 f=0000 c=fa BYTE_DATA l=1 [39] ... smbus_result: i2c-0 a=051 f=0000 c=fa BYTE_DATA rd res=0 formatted as: i2c-<adapter-nr> a=<addr> f=<flags> c=<command> <protocol-name> <rd|wr> res=<result> l=<data-len> [<data-block>] The adapters to be traced can be selected by something like: echo adapter_nr==1 >/sys/kernel/debug/tracing/events/i2c/filter Note that this shares the same filter and enablement as i2c. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: Add message transfer tracepoints for I2CDavid Howells2014-03-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add tracepoints into the I2C message transfer function to retrieve the message sent or received. The following config options must be turned on to make use of the facility: CONFIG_FTRACE CONFIG_ENABLE_DEFAULT_TRACERS The I2C tracepoint can be enabled thusly: echo 1 >/sys/kernel/debug/tracing/events/i2c/enable and will dump messages that can be viewed in /sys/kernel/debug/tracing/trace that look like: ... i2c_write: i2c-5 #0 a=044 f=0000 l=2 [02-14] ... i2c_read: i2c-5 #1 a=044 f=0001 l=4 ... i2c_reply: i2c-5 #1 a=044 f=0001 l=4 [33-00-00-00] ... i2c_result: i2c-5 n=2 ret=2 formatted as: i2c-<adapter-nr> #<message-array-index> a=<addr> f=<flags> l=<datalen> n=<message-array-size> ret=<result> [<data>] The operation is done between the i2c_write/i2c_read lines and the i2c_reply and i2c_result lines so that if the hardware hangs, the trace buffer can be consulted to determine the problematic operation. The adapters to be traced can be selected by something like: echo adapter_nr==1 >/sys/kernel/debug/tracing/events/i2c/filter These changes are based on code from Steven Rostedt. Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Steven Rostedt <rostedt@goodmis.org> [wsa: adapted path for 'enable' in the commit msg] Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: remove DEFINE_PCI_DEVICE_TABLE macroJingoo Han2014-03-13
| | | | | | | | | | | | | | | | Don't use DEFINE_PCI_DEVICE_TABLE macro, because this macro is not preferred. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: s3c2410: Leave the bus disabled unless it is in useSimon Glass2014-03-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is a rather odd feature of the exynos i2c controller that if it is left enabled, it can lock itself up with the clk line held low. This makes the bus unusable. Unfortunately, the s3c24xx_i2c_set_master() function does not notice this, and reports a timeout. From then on the bus cannot be used until the AP is rebooted. The problem happens when any sort of interrupt occurs (e.g. due to a bus transition) when we are not in the middle of a transaction. We have seen many instances of this when U-Boot leaves the bus apparently happy, but Linux cannot access it. The current code is therefore pretty fragile. This fixes things by leaving the bus disabled unless we are actually in a transaction. We enable the bus at the start of the transaction and disable it at the end. That way we won't get interrupts and will not lock up the bus. It might be possible to clear pending interrupts on start-up, but this seems to be a more robust solution. We can't service interrupts when we are not in a transaction, and anyway would rather not lock up the bus while we try. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: i2c-s3c2410: deprecate class based instantiationWolfram Sang2014-03-12
| | | | | | | | | | | | | | | | | | Warn users that class based instantiation is going away soon in favour of more robust probing and faster bootup times. Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Kukjin Kim <kgene.kim@samsung.com>
| * i2c: at91: Add device tree property to set clock-frequencyMarek Roszko2014-03-12
| | | | | | | | | | | | | | | | | | | | This adds the ability to set "clock-frequency" in the device tree for the at91 i2cbus following the naming of other i2c bus implementations. If the property is not set,the clock frequency will default to the previously used define of 100KHz. Signed-off-by: Marek Roszko <mark.roszko@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: designware-pci: set ideal HCNT, LCNT and SDA hold time valueChew, Chiau Ee2014-03-12
| | | | | | | | | | | | | | | | | | | | | | | | | | On Intel BayTrail, there was case whereby the resulting fast mode bus speed becomes slower (~20% slower compared to expected speed) if using the HCNT/LCNT calculated in the core layer. Thus, this patch is added to allow pci glue layer to pass in optimal HCNT/LCNT/SDA hold time values to core layer since the core layer supports cofigurable HCNT/LCNT/SDA hold time values now. Signed-off-by: Chew, Chiau Ee <chiau.ee.chew@intel.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: st: Fix return in case of arbitration lostMaxime COQUELIN2014-03-10
| | | | | | | | | | | | | | | | | | This patch fixes the error returned to the i2c_transfer function to -EAGAIN in case of arbitratin lost, so that the retry mechanism can be used. Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: mv64xxx: refactor initialization for new msgsWolfram Sang2014-03-10
| | | | | | | | | | | | | | We now have a central place to put this code to. Tested-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: mv64xxx: directly call send_start when initializing transferWolfram Sang2014-03-10
| | | | | | | | | | | | | | | | Calling the state machine with a definite state which is only used in this context is superfluous. Do it directly. Tested-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: mv64xxx: refactor send_startWolfram Sang2014-03-10
| | | | | | | | | | | | | | | | For start and restart, we are doing the same thing. Let's consolidate that. Tested-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: designware-pci: add 10-bit addressing mode functionality for BYT I2CChew, Chiau Ee2014-03-10
| | | | | | | | | | | | | | | | | | All the I2C controllers on Intel BayTrail LPSS subsystem able to support 10-bit addressing mode functionality. Signed-off-by: Chew, Chiau Ee <chiau.ee.chew@intel.com> Signed-off-by: Ong, Boon Leong <boon.leong.ong@intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: mxs: Use devm_ioremap_resource()Jingoo Han2014-03-10
| | | | | | | | | | | | | | | | | | | | | | Use devm_ioremap_resource() in order to make the code simpler, and remove redundant return value check of platform_get_resource() because the value is checked by devm_ioremap_resource(). Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Marek Vasut <marex@denx.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: bcm2835: Use devm_ioremap_resource()Jingoo Han2014-03-09
| | | | | | | | | | | | | | | | | | | | Use devm_ioremap_resource() in order to make the code simpler, and remove redundant return value check of platform_get_resource() because the value is checked by devm_ioremap_resource(). Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: i801: enable Intel BayTrail SMBUSChew, Kean ho2014-03-09
| | | | | | | | | | | | | | | | | | Add Device ID of Intel BayTrail SMBus Controller. Signed-off-by: Chew, Kean ho <kean.ho.chew@intel.com> Signed-off-by: Chew, Chiau Ee <chiau.ee.chew@intel.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: designware-pci: Add Baytrail PCI IDsMika Westerberg2014-03-09
| | | | | | | | | | | | | | | | Intel Baytrail I2C controllers can be enumerated from PCI as well as from ACPI. In order to support this add the Baytrail PCI IDs to the driver. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: designware-pci: Cleanup driver power managementMika Westerberg2014-03-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The PCI part of the DesignWare I2C driver does a lot of things that are not required anymore. For example drivers aren't supposed to handle PCI state transitions themselves. This is all provided by the PCI bus core already. In addition to that there is no point scheduling RPM suspend on driver's idle hook but instead we can use RPM autosuspend for this (which is enabled in the driver already). As a bonus, this patch also fixes following compile warning which is emitted when the driver was compiled without CONFIG_PM_RUNTIME set: drivers/i2c/busses/i2c-designware-pcidrv.c:245:12: warning: ‘i2c_dw_pci_runtime_idle’ defined but not used [-Wunused-function] Reported-by: xinhui.pan <xinhuix.pan@intel.com> Reported-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: designware: make SCL and SDA falling time configurableRomain Baeriswyl2014-03-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch allows to set independantly SCL and SDA falling times. The tLOW period is computed by taking into account the SCL falling time. The tHIGH period is computed by taking into account the SDA falling time. For instance in case the margin on tLOW is considered too small, it can be increased by increasing the SCL falling time which is by default set at 300ns. The same applies for tHIGH period with the help of SDA falling time. Signed-off-by: Romain Baeriswyl <romainba@abilis.com> Reviewed-by: Christian Ruppert <christian.ruppert@abilis.com> Acked-by: Shinya Kuribayashi <skuribay@pobox.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: bfin-twi: remove unnecessary Blackfin SSYNC from the driverSonic Zhang2014-03-09
| | | | | | | | | | | | | | | | Put necessary SSYNC code into blackfin twi arch header. The generic TWI driver should not contain any architecture specific code. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: bfin-twi: move bits macros and structs in header from arch include to ↵Sonic Zhang2014-03-09
| | | | | | | | | | | | | | | | | | | | | | generic include The ADI TWI peripheral is not binding to the Blackfin processor only. The bits macros and structs should be put in the generic include header. And update head file path in drivers accordingly. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: mv64xxx: fix circular Kconfig dependencyWolfram Sang2014-03-06
| | | | | | | | | | | | | | | | | | | | | | Commit 370136bc67c3 ("i2c: mv64xxx: Add reset deassert call") introduced: drivers/video/Kconfig:42:error: recursive dependency detected! ARCH_SUNXI selects RESET_CONTROLLER anyhow. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: mv64xxx: Add support for the Allwinner A31 I2C driverMaxime Ripard2014-03-05
| | | | | | | | | | | | | | | | | | | | | | The Allwinner A31 I2C controller is almost identical to the one used in the other Allwinner SoCs, except for the fact that it needs to clear the interrupt by setting the INT_FLAGS bit in the control register, instead of clearing it. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: mv64xxx: Add reset deassert callMaxime Ripard2014-03-05
| | | | | | | | | | | | | | | | | | | | | | | | The Allwinner A31 SoC using that IP has a reset controller maintaining it reset unless told otherwise. Add some optional reset support to the driver. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: i2c-rcar: deprecate class based instantiationWolfram Sang2014-03-05
| | | | | | | | | | | | | | Warn users that class based instantiation is going away soon in favour of more robust probing and faster bootup times. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: i2c-tegra: deprecate class based instantiationWolfram Sang2014-03-05
| | | | | | | | | | | | | | | | Warn users that class based instantiation is going away soon in favour of more robust probing and faster bootup times. Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Stephen Warren <swarren@nvidia.com>
| * i2c: i2c-stu300: deprecate class based instantiationWolfram Sang2014-03-05
| | | | | | | | | | | | | | | | Warn users that class based instantiation is going away soon in favour of more robust probing and faster bootup times. Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Linus Walleij <linus.walleij@linaro.org>
| * i2c: i2c-ocores: deprecate class based instantiationWolfram Sang2014-03-05
| | | | | | | | | | | | | | | | Warn users that class based instantiation is going away soon in favour of more robust probing and faster bootup times. Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
| * i2c: i2c-nomadik: deprecate class based instantiationWolfram Sang2014-03-05
| | | | | | | | | | | | | | | | Warn users that class based instantiation is going away soon in favour of more robust probing and faster bootup times. Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Linus Walleij <linus.walleij@linaro.org>
| * i2c: i2c-bfin-twi: deprecate class based instantiationWolfram Sang2014-03-05
| | | | | | | | | | | | | | | | Warn users that class based instantiation is going away soon in favour of more robust probing and faster bootup times. Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Sonic Zhang <sonic.zhang@analog.com>
| * i2c: i2c-at91: deprecate class based instantiationWolfram Sang2014-03-05
| | | | | | | | | | | | | | | | Warn users that class based instantiation is going away soon in favour of more robust probing and faster bootup times. Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
| * i2c: i2c-omap: deprecate class based instantiationWolfram Sang2014-03-05
| | | | | | | | | | | | | | Warn users that class based instantiation is going away soon in favour of more robust probing and faster bootup times. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: add deprecation warning for class based instantiationWolfram Sang2014-03-05
| | | | | | | | | | | | | | | | | | | | | | | | Class based instantiation can cause noticeable delays when booting. This mechanism is used when it is not possible to describe slaves on I2C busses. As we do have other mechanisms, most embedded I2C will not need classes and for embedded it is explicitly not recommended to use them. Add a deprecation warning for drivers which want to disable class based instantiation in the near future to gain boot-up time, so users relying on this technique can switch to something better. They really should. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: nomadik: Remove busy check for transfers at suspend lateUlf Hansson2014-03-05
| | | | | | | | | | | | | | | | We should never be busy performing transfers at suspend late, thus there are no reason to check for it. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: nomadik: Convert to late and early system PM callbacksUlf Hansson2014-03-05
| | | | | | | | | | | | | | | | | | At system suspend_late, runtime PM has been disabled by the PM core which means we can safely operate on these resources. Consequentially we no longer have to wait until the noirq phase of the system suspend. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: nomadik: Fixup deployment of runtime PMUlf Hansson2014-03-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since the runtime PM state is expected to be active according to the amba bus, we must align our behaviour while probing to it. Moreover, this is needed to be able to have the driver fully functional without depending on CONFIG_RUNTIME_PM. Since the device is active while a successful probe has been completed, the reference counting for the clock will be screwed up and never reach zero. We resolve this by implementing runtime PM callbacks and let them handle the resources accordingly, including the clock. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> [wsa: s/#if/#ifdef/] Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: nomadik: Remove redundant call to pm_runtime_disableUlf Hansson2014-03-05
| | | | | | | | | | | | | | | | The amba bus are responsible for pm_runtime_enable|disable, remove the redundant pm_runtime_disable at driver removal. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: nomadik: Convert to devm functionsUlf Hansson2014-03-05
| | | | | | | | | | | | | | Use devm_* functions to simplify code and error handling. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: nomadik: factor platform data into state containerLinus Walleij2014-03-05
| | | | | | | | | | | | | | | | | | | | Move the former platform data struct nmk_i2c_controller into the per-device state container struct i2c_nmk_client, and remove all the platform data probe path hacks. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> [wsa: use 100kHz as default] Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: rcar: add compatible entry for r8a7791Wolfram Sang2014-02-26
| | | | | | | | | | | | | | | | While we are here, also brush up the devicetree binding documentation. The example was an inappropriate copy from the sh_mobile driver. Signed-off-by: Wolfram Sang <wsa@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* | Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAPUwe Kleine-König2014-04-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the renamed symbol is defined lib/iomap.c implements ioport_map and ioport_unmap and currently (nearly) all platforms define the port accessor functions outb/inb and friend unconditionally. So HAS_IOPORT_MAP is the better name for this. Consequently NO_IOPORT is renamed to NO_IOPORT_MAP. The motivation for this change is to reintroduce a symbol HAS_IOPORT that signals if outb/int et al are available. I will address that at least one merge window later though to keep surprises to a minimum and catch new introductions of (HAS|NO)_IOPORT. The changes in this commit were done using: $ git grep -l -E '(NO|HAS)_IOPORT' | xargs perl -p -i -e 's/\b((?:CONFIG_)?(?:NO|HAS)_IOPORT)\b/$1_MAP/' Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | i2c: cpm: Fix build by adding of_address.h and of_irq.hScott Wood2014-03-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes a build break due to the undeclared use of irq_of_parse_and_map() and of_iomap(). This build break was apparently introduced while the driver was unbuildable due to the bug fixed by 62c19c9d29e65086e5ae76df371ed2e6b23f00cd ("i2c: Remove usage of orphaned symbol OF_I2C"). When 62c19c was added in v3.14-rc7, the driver was enabled again, breaking the powerpc mpc85xx_defconfig and mpc85xx_smp_defconfig. 62c19c is marked for stable, so this should go there as well. Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Cc: stable@kernel.org
* | i2c: Remove usage of orphaned symbol OF_I2CRichard Weinberger2014-03-13
|/ | | | | | | | | | The symbol is an orphan, don't depend on it anymore. Signed-off-by: Richard Weinberger <richard@nod.at> [wsa: enhanced commit message] Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Fixes: 687b81d083c0 (i2c: move OF helpers into the core) Cc: stable@kernel.org
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