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* mfd: drop owner assignment from platform_driversWolfram Sang2014-10-2025-28/+0
| | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* Merge tag 'mfd-for-linus-3.18' of ↵Linus Torvalds2014-10-1541-290/+1047
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd Pull MFD updates from Lee Jones: "Changes to existing drivers: - DT clean-ups in da9055-core, max14577, rn5t618, arizona, hi6421, stmpe, twl4030 - Export symbols for use in modules in max14577 - Plenty of static code analysis/Coccinelle fixes throughout the SS - Regmap clean-ups in arizona, wm5102, wm5110, da9052, tps65217, rk808 - Remove unused/duplicate code in da9052, 88pm860x, ti_ssp, lpc_sch, arizona - Bug fixes in ti_am335x_tscadc, da9052, ti_am335x_tscadc, rtsx_pcr - IRQ fixups in arizona, stmpe, max14577 - Regulator related changes in axp20x - Pass DMA coherency information from parent => child in MFD core - Rename DT document files for consistency - Add ACPI support to the MFD core - Add Andreas Werner to MAINTAINERS for MEN F21BMC New drivers/supported devices: - New driver for MEN 14F021P00 Board Management Controller - New driver for Ricoh RN5T618 PMIC - New driver for Rockchip RK808 - New driver for HiSilicon Hi6421 PMIC - New driver for Qualcomm SPMI PMICs - Add support for Intel Braswell in lpc_ich - Add support for Intel 9 Series PCH in lpc_ich - Add support for Intel Quark ILB in lpc_sch" [ Delayed to after the poweer/reset pull due to Kconfig problems with recursive Kconfig select/depends-on chains. - Linus ] * tag 'mfd-for-linus-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (79 commits) mfd: cros_ec: wait for completion of commands that return IN_PROGRESS i2c: i2c-cros-ec-tunnel: Set retries to 3 mfd: cros_ec: move locking into cros_ec_cmd_xfer mfd: cros_ec: stop calling ->cmd_xfer() directly mfd: cros_ec: Delay for 50ms when we see EC_CMD_REBOOT_EC MAINTAINERS: Adds Andreas Werner to maintainers list for MEN F21BMC mfd: arizona: Correct mask to allow setting micbias external cap mfd: Add ACPI support Revert "mfd: wm5102: Manually apply register patch" mfd: ti_am335x_tscadc: Update logic in CTRL register for 5-wire TS mfd: dt-bindings: atmel-gpbr: Rename doc file to conform to naming convention mfd: dt-bindings: qcom-pm8xxx: Rename doc file to conform to naming convention mfd: Inherit coherent_dma_mask from parent device mfd: Document DT bindings for Qualcomm SPMI PMICs mfd: Add support for Qualcomm SPMI PMICs mfd: dt-bindings: pm8xxx: Add new compatible string mfd: axp209x: Drop the parent supplies field mfd: twl4030-power: Use 'ti,system-power-controller' as alternative way to support system power off mfd: dt-bindings: twl4030-power: Use the standard property to mark power control mfd: syscon: Add Atmel GPBR DT bindings documention ...
| * mfd: cros_ec: wait for completion of commands that return IN_PROGRESSAndrew Bresticker2014-10-061-0/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When an EC command returns EC_RES_IN_PROGRESS, we need to query the state of the EC until it indicates that it is no longer busy. Do this in cros_ec_cmd_xfer() under the EC's mutex so that other commands (e.g. keyboard, I2C passtru) aren't issued to the EC while it is working on the in-progress command. The 10 milliseconds delay and the number of retries are the values that were used by the flashrom tool when retrying commands. Signed-off-by: Andrew Bresticker <abrestic@chromium.org> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: cros_ec: move locking into cros_ec_cmd_xferAndrew Bresticker2014-10-062-12/+9
| | | | | | | | | | | | | | | | | | | | | | Now that there's a central cros_ec_cmd_xfer(), move the locking out of the SPI driver. Signed-off-by: Andrew Bresticker <abrestic@chromium.org> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Reviewed-by: Doug Anderson <dianders@chromium.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: cros_ec: stop calling ->cmd_xfer() directlyAndrew Bresticker2014-10-061-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of having users of the ChromeOS EC call the interface-specific cmd_xfer() callback directly, introduce a central cros_ec_cmd_xfer() to use instead. This will allow us to put all the locking and retry logic in one place instead of duplicating it across the different drivers. Signed-off-by: Andrew Bresticker <abrestic@chromium.org> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Reviewed-by: Doug Anderson <dianders@chromium.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: cros_ec: Delay for 50ms when we see EC_CMD_REBOOT_ECDoug Anderson2014-10-061-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If someone sends a EC_CMD_REBOOT_EC to the EC, the EC will likely be unresponsive for quite a while. Add a delay to the end of the command to prevent random failures of future commands. NOTES: * This could be optimized a bit by simply delaying the next command sent, but EC_CMD_REBOOT_EC is such a rare command that the extra complexity doesn't seem worth it. * This is a bit of an "ugly hack" since the SPI driver is effectively snooping on the communication and making a lot of assumptions. It would be nice to architect in some better solution long term. * This same logic probably needs to be applied to the i2c driver. Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Randall Spangler <rspangler@chromium.org> Reviewed-by: Vadim Bendebury <vbendeb@chromium.org> Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: arizona: Correct mask to allow setting micbias external capCharles Keepax2014-09-261-0/+1
| | | | | | | | | | | | | | | | | | Currently the mask for the external capacitor bit is missing when writing the MICBIAS config meaning it will never be set this patch fixes this. Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: Add ACPI supportMika Westerberg2014-09-261-0/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If an MFD device is backed by ACPI namespace, we should allow subdevice drivers to access their corresponding ACPI companion devices through normal means (e.g using ACPI_COMPANION()). This patch adds such support to the MFD core. If the MFD parent device does not specify any ACPI _HID/_CID for the child device, the child device will share the parent ACPI companion device. Otherwise the child device will be assigned with the corresponding ACPI companion, if found in the namespace below the parent. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Darren Hart <dvhart@linux.intel.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * Revert "mfd: wm5102: Manually apply register patch"Charles Keepax2014-09-261-12/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit d9d03496f6f904a3588bdb8b215853bc4e50132c. It seems this commit was applied twice, once through ASoC and once through MFD: commit 4c9bb8bc352a14c9613c77bc3f1e9038cd086b9b mfd: wm5102: Manually apply register patch commit d9d03496f6f904a3588bdb8b215853bc4e50132c mfd: wm5102: Manually apply register patch This has lead to a small piece of duplicate code. It is harmless hence how it has gone unoticed for so long. This patch reverts one of the two commits removing the unneeded code. Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: ti_am335x_tscadc: Update logic in CTRL register for 5-wire TSJeff Lance2014-09-261-13/+17
| | | | | | | | | | | | | | | | | | | | | | | | The logic in AFE_Pen_Ctrl bitmask in the CTRL register is different for five wire versus four or eight wire touschscreens. This patch should fix this for five-wire touch screens. There should be no change needed here for four and eight wire tousch screens. Signed-off-by: Jeff Lance <j-lance1@ti.com> [bigeasy: keep the change mfd only] Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: Inherit coherent_dma_mask from parent deviceBoris BREZILLON2014-09-261-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | dma_mask and dma_parms are already inherited from the parent device but dma_coherent_mask was left uninitialized (set to zero thanks to kzalloc). Set sub-device coherent_dma_mask to its parent value to simplify sub-drivers making use of dma coherent helper functions (those drivers currently have to explicitly set the dma coherent mask using dma_set_coherent_mask function). Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: Add support for Qualcomm SPMI PMICsJosh Cartwright2014-09-263-0/+83
| | | | | | | | | | | | | | | | | | | | | | | | The Qualcomm SPMI PMIC chips are components used with the Snapdragon 800 series SoC family. This driver exists largely as a glue mfd component, it exists to be an owner of an SPMI regmap for children devices described in device tree. Signed-off-by: Josh Cartwright <joshc@codeaurora.org> Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: axp209x: Drop the parent supplies fieldMaxime Ripard2014-09-261-11/+0
| | | | | | | | | | | | | | | | Now that the regulator code get its parent supplies purely from the DT, we can drop the parent supplies resources in the MFD driver. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: twl4030-power: Use 'ti,system-power-controller' as alternative way to ↵Nishanth Menon2014-09-261-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | support system power off ti,system-power-controller is more or less the standard way of indicating that the PMIC is the system wide power controller and hence may be used to switch off the system. Almost ALL TI PMIC drivers and many Maxim PMIC drivers follow the same style. So support 'ti,system-power-controller' in addition to the usual 'ti,use_poweroff' to indicate that the PMIC instance has control for switching off the system. Signed-off-by: Nishanth Menon <nm@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: rk808: Add register cachingDoug Anderson2014-09-261-0/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Let's define the voltatile registers (those that can't be cached) and enable caching. The rk808 is accessed almost constantly with cpufreq so this is really nice. As measured by ftrace: before this change: cpu0_set_target() => ~2200us after this change: cpu0_set_target() => ~500us Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Chris Zhong <zyw@rock-chips.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: arizona: Use handle_simple_irq for IRQ dispatch chipCharles Keepax2014-09-261-1/+1
| | | | | | | | | | | | | | | | | | We use a dummy IRQ chip to dispatch interrupts to the two seperate IRQ domains on the Arizona devices. This is just a simple software IRQ chip and thus the current handle_edge_irq is unnecessary for its needs. Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: max14577: Don't pass IRQ domain to mfd_add_devicesKrzysztof Kozlowski2014-09-261-2/+1
| | | | | | | | | | | | | | | | The max14577 MFD cells do not have any resources so the IRQ domain passed to mfd_add_devices is not used. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: stmpe: Support gpio over irq under device treeSean Cross2014-09-261-1/+6
| | | | | | | | | | | | | | | | | | | | The stmpe_platform_data has a irq_over_gpio field, which allows the system to read STMPE events whenever an IRQ occurs on a GPIO pin. This patch adds the ability to configure this field and to use a GPIO as an IRQ source for boards configuring the STMPE in device tree. Signed-off-by: Sean Cross <xobs@kosagi.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: intel_soc_pmic: Add CONFIG_PM_SLEEP check for suspend_fn/resume_fnJaewon Kim2014-09-261-0/+2
| | | | | | | | | | | | | | | | | | | | | | This patch fix warning message with CONFIG_PM_SLEEP disabled If CONFIG_PM_SLEEP is not enabled we receive the following warning message: drivers/mfd/intel_soc_pmic_core.c:118:12: warning: 'intel_soc_pmic_suspend' defined but not used Signed-off-by: Jaewon Kim <jaewon02.kim@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: rtsx_pcr: Fix MSI enable error handlingChris Ball2014-09-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pci_enable_msi() can return failure with both positive and negative integers -- it returns 0 for success -- but is only tested here for "if (ret < 0)". This causes us to try to use MSI on the RTS5249 SD reader in the Dell XPS 11 when enabling MSI failed, causing: [ 1.737110] rtsx_pci: probe of 0000:05:00.0 failed with error -110 Cc: stable <stable@vger.kernel.org> Reported-by: D. Jared Dominguez <Jared_Dominguez@Dell.com> Tested-by: D. Jared Dominguez <Jared_Dominguez@Dell.com> Signed-off-by: Chris Ball <chris@printf.net> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: ti_am335x_tscadc: Fix TSC resumeSebastian Andrzej Siewior2014-09-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the resume path, the ADC invokes am335x_tsc_se_set_cache() with 0 as the steps argument if continous mode is not in use. This in turn disables all steps and so the TSC is not working until one ADC sampling is performed. This patch fixes it by writing the current cached mask instead of the passed steps. Fixes: 7ca6740cd1cd ("mfd: input: iio: ti_amm335x: Rework TSC/ADCA synchronization") Cc: stable@vger.kernel.org # v3.13+ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: tps65217: Tell regmap what registers are validMark Brown2014-09-261-0/+2
| | | | | | | | | | | | | | | | Allow regmap to provide debugfs access to the register map by telling it what registers are valid. Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: mc13xxx: Configure WDI resetMarkus Pargmann2014-09-261-0/+8
| | | | | | | | | | | | | | | | | | Setup the PMIC to make a restart when a watchdog interrupt occures. If this is not configured, the PMIC will shut down the power supply without a restart. Signed-off-by: Markus Pargmann <mpa@pengutronix.de> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: pcf50633: Use sprintf directlyAndy Shevchenko2014-09-261-4/+1
| | | | | | | | | | | | | | | | When dump a content of the registers let's use snprintf() directly with %*ph specifier. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: Add HI6421 PMIC Core driverGuodong Xu2014-09-263-0/+127
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds driver to support HiSilicon Hi6421 PMIC. Hi6421 includes multi- functions, such as regulators, codec, ADCs, Coulomb counter, etc. This driver includes core APIs _only_. Drivers for individul components, like voltage regulators, are implemented in corresponding driver directories and files. Registers in Hi6421 are memory mapped, so using regmap-mmio API. Signed-off-by: Guodong Xu <guodong.xu@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: lpc_sch: Remove FSF addressAndy Shevchenko2014-09-261-4/+1
| | | | | | | | | | | | | | | | | | | | This patch removes FSF address because it can be changed. While here, update the copyright lines by adding Intel Corp. to them. There is no functional change. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: lpc_sch: Add support for Intel Quark X1000Andy Shevchenko2014-09-261-6/+31
| | | | | | | | | | | | | | | | | | | | | | Intel Quark X1000 SoC supports IRQ based GPIO. This patch will enable MFD support for Quark X1000 and provide IRQ resources to Quark X1000 GPIO device driver. Signed-off-by: Chang Rebecca Swee Fun <rebecca.swee.fun.chang@intel.com> Tested-by: Chang Rebecca Swee Fun <rebecca.swee.fun.chang@intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: lpc_sch: Reduce duplicate code and improve manageabilityAndy Shevchenko2014-09-261-82/+99
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch refactors the driver to use helper functions instead of copy'n'pasted pieces of code. It also introduces an additional struct to hold a chipset info. The chipset info will be used to store features that are supported by specific processor or chipset. LPC_SCH supports SMBUS, GPIO and WDT features. As this code base might expand further to support more processors, this implementation will help to keep code base clean and manageable. The patch is partially based on the work done by Chang Rebecca Swee Fun. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Tested-by: Chang Rebecca Swee Fun <rebecca.swee.fun.chang@intel.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: RK808: Add new mfd driver for RK808Chris Zhong2014-09-263-0/+259
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The RK808 chip is a power management IC for multimedia and handheld devices. It contains the following components: - Regulators - RTC - Clkout The RK808 core driver is registered as a platform driver and provides communication through I2C with the host device for the different components. Signed-off-by: Chris Zhong <zyw@rock-chips.com> Signed-off-by: Zhang Qing <zhangqing@rock-chips.com> Tested-by: Heiko <heiko@sntech.de> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: da9052: Avoid setting read_flag_mask for da9052-i2c driverAxel Lin2014-09-262-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Current code init regmap with &da9052_regmap_config for both da9052-spi and da9052-i2c drivers. da9052-spi sets the read_flag_mask. The same setting may be applied for da9052-i2c if da9052-spi driver is loaded first because they actually use the same regmap_config setting. Fix this issue by using a local variable for regmap_config in da9052-spi driver, so the settings in spi driver won't impact the settings in i2c driver. Also makes da9052_regmap_config const to avoid similar issue. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: arizona: Propagate irq_wake through to parent IRQCharles Keepax2014-09-261-0/+8
| | | | | | | | | | | | | | | | | | If one of the internal Arizona IRQs is set as a wake source this needs to be propogated back to the actual IRQ line that the Arizona device is attached to. Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: arizona: Add support for INn_Mode register controlInha Song2014-09-261-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some boards need to set the INn_MODE[1:0] register to change the input signal patch. This wlf,inmode property is optional. If present, values must be specified less than or equal to the number of input singals. If values less than the number of input signals, elements that has not been specifed are set to 0 by default. Example: - wlf,inmode = <2 0 2>; /* IN1, IN3 use DMIC */ Signed-off-by: Inha Song <ideal.song@samsung.com> Reviewed-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: arizona: Add ASYNC_SAMPLE_RATE_2 registersCharles Keepax2014-09-262-0/+7
| | | | | | | | | | | | | | | | | | Some arizona devices have a second asynchronous sample rate, add the registers necessary to support this. Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Acked-by: Mark Brown <broonie@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: Add Ricoh RN5T618 PMIC core driverBeniamino Galvani2014-09-263-0/+146
| | | | | | | | | | | | | | | | | | | | | | | | Ricoh RN5T618 is a power management IC which integrates 3 step-down DCDC converters, 7 low-dropout regulators, a Li-ion battery charger, fuel gauge, ADC, GPIOs and a watchdog timer. This commit adds a MFD core driver to support the I2C communication with the device. Signed-off-by: Beniamino Galvani <b.galvani@gmail.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: ti_am335x_tscadc: Fix TSC operation after ADC continouous modeVignesh R2014-09-261-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After enabling and disabling ADC continuous mode via sysfs, ts_print_raw fails to return any data. This is because when ADC is configured for continuous mode, it disables touch screen steps.These steps are not re-enabled when ADC continuous mode is disabled. Therefore existing values of REG_SE needs to be cached before enabling continuous mode and disabling touch screen steps and enabling ADC steps. The cached value are to be restored to REG_SE once ADC is disabled. Fixes: 7ca6740cd1cd ("mfd: input: iio: ti_amm335x: Rework TSC/ADC synchronization") Cc: stable@vger.kernel.org # v3.13+ Signed-off-by: Vignesh R <vigneshr@ti.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: tps65910: Work around silicon erratum SWCZ010Arnout Vandecappelle (Essensium/Mind)2014-09-261-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | http://www.ti.com/lit/pdf/SWCZ010: Glitch on SDA-SCL not managed correctly by the I2C IP Impact: The standard specifies that the I2C transfer should restart on a start event in all cases. The current design does not support two consecutive Start conditions. This can cause the first real access after such a glitch to be corrupted. Description: An unexpected glitch on SDA and SCL can generate a wrong start event. In the current design, the SCL line must toggle two times to detect a new start event and completely restart the I2C access; hence the real start event is not detected in the case of a single SCL toggle. Workaround: Repeat I2C access. A simpler workaround is to make a dummy transfer just before the first access to the tps65910 chip. This can be done unconditionally. Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> Acked-by: Mark Brown <broonie@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: stmpe: Rid variable length array Sparse warningsLee Jones2014-09-261-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | Numbers are generated by taking the largest currently used values. drivers/mfd/stmpe.c:252:17: warning: Variable length array is used. drivers/mfd/stmpe.c:857:16: warning: Variable length array is used. Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: max8925-i2c: Fix variable length array Sparse warningLee Jones2014-09-261-1/+1
| | | | | | | | | | | | | | | | | | The largest byte size in use currently is 8. Fix array size to 9. drivers/mfd/max8925-i2c.c:40:33: warning: Variable length array is used Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: 88pm860x-i2c: Fix variable length array Sparse warningLee Jones2014-09-261-1/+1
| | | | | | | | | | | | | | drivers/mfd/88pm860x-i2c.c:125:33: warning: Variable length array is used. Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: 88pm860x-i2c: Purge unused functionsLee Jones2014-09-261-64/+0
| | | | | | | | | | | | | | | | | | | | | | | | The following functions appear to be unused since v2.6.39: pm860x_page_reg_read() pm860x_page_bulk_write() pm860x_page_set_bits() Let's remove them. Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: lpc_ich: Add Device IDs for Intel 9 Series PCHJames Ralston2014-09-261-0/+11
| | | | | | | | | | | | | | This patch adds the LPC Device IDs for the Intel 9 Series PCH. Signed-off-by: James Ralston <james.d.ralston@intel.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: max77693: Improve support for the flash cellJacek Anaszewski2014-09-261-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | This patch improves support for the flash cell of max77693 mfd by adding relevant of_compatible field and a structure for caching related platform data. Added are also FLASH registers related macro definitions. Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com> Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: lpc_ich: Add PCI ID for Intel BraswellAlan Cox2014-09-261-0/+6
| | | | | | | | | | | | | | | | | | This is the same as used in Baytrail so add the new PCI ID to the driver's list of supported IDs. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: da9052-i2c: Remove duplicate test for I2C_FUNC_SMBUS_BYTE_DATA ↵Axel Lin2014-09-261-7/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | functionality Since commit b42261078a91 ("regmap: i2c: fallback to SMBus if the adapter does not support standard I2C"), regmap-i2c will check the I2C_FUNC_SMBUS_[BYTE|WORD]_DATA functionality based on the regmap_config setting if the adapter does not support standard I2C. So remove the I2C_FUNC_SMBUS_BYTE_DATA functionality check in the driver code. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: menelaus: Fix error return codeJulia Lawall2014-09-261-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Convert a zero return value on error to a negative one, as returned elsewhere in the function. Additionally, converted 1 << 7 to BIT(7) at the suggestion of Lee Jones. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> ( if@p1 (\(ret < 0\|ret != 0\)) { ... return ret; } | ret@p1 = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: arizona: Avoid use of legacy IRQ mappingCharles Keepax2014-09-261-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | regmap_add_irq_chip is called from arizona_irq_init with the irq_base specified as -1 and regmap_add_irq_chip uses if (irq_base) to check if it should use legacy IRQ mapping. As such the irq mappings are currently added with irq_domain_add_legacy, rather than irq_domain_add_linear. This is clearly a typo as there is no reason why this driver can't use irq_domain_add_linear. This patch corrects this by passing the irq_base as zero to regmap_add_irq_chip. Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: arizona: Mark additional registers as volatileCharles Keepax2014-09-262-6/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Mark some additional registers as volatile. The write sequencer control registers should not be cached, as we don't ever want their value synchronised as this might cause a write sequence to be accidentally initiated. Additionally, the DAC_COMP registers require special preconditions to write so there values wouldn't be updated accurately during a register sync. Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: wm5102: Mark register write sequencer control 3 readableMark Brown2014-09-262-1/+3
| | | | | | | | | | | | | | | | | | | | | | During init the core checks if the wm5102 has finished starting by reading register 0x19 and looking at the value. This read always fails since this is not a readable register, mark it as being one. While we're at it provide a constant for the register name (as supplied by Charles Keepax). Signed-off-by: Mark Brown <broonie@linaro.org> Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: rtsx_usb: Fix decimal printf format specifiers prefixed with 0xHans Wennborg2014-09-261-1/+1
| | | | | | | | | | | | | | | | | | | | The prefix suggests the number should be printed in hex, so use the %x specifier to do that. Found by using regex suggested by Joe Perches. Signed-off-by: Hans Wennborg <hans@hanshq.net> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: twl6040: Fix error return codeJulia Lawall2014-09-261-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Convert a zero return value on error to a negative one, as returned elsewhere in the function. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> ( if@p1 (\(ret < 0\|ret != 0\)) { ... return ret; } | ret@p1 = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Lee Jones <lee.jones@linaro.org>
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