summaryrefslogtreecommitdiffstats
Commit message (Collapse)AuthorAgeFilesLines
* ipv4: ip_check_defrag should correctly check return value of skb_copy_bitsAlexander Drozdov2015-02-201-1/+1
| | | | | | | | | | skb_copy_bits() returns zero on success and negative value on error, so it is needed to invert the condition in ip_check_defrag(). Fixes: 1bf3751ec90c ("ipv4: ip_check_defrag must not modify skb before unsharing") Signed-off-by: Alexander Drozdov <al.drozdov@gmail.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* usb: plusb: Add support for National Instruments host-to-host cableBen Shelton2015-02-201-0/+5
| | | | | | | | The National Instruments USB Host-to-Host Cable is based on the Prolific PL-25A1 chipset. Add its VID/PID so the plusb driver will recognize it. Signed-off-by: Ben Shelton <ben.shelton@ni.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ehea: Register memory hotplug, reboot and crash hooks on adapter probeAnton Blanchard2015-02-191-105/+141
| | | | | | | | | | | | ehea creates memory hotplug, reboot and crash hooks even if there are no adapters in the box. Just create them when we probe our first adapter. [cascardo: use ehea_register_memory_hooks return code] Signed-off-by: Anton Blanchard <anton@samba.org> Tested-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com> Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* gen_stats.c: Duplicate xstats buffer for later useIgnacy Gawędzki2015-02-191-1/+14
| | | | | | | | | | | | | | The gnet_stats_copy_app() function gets called, more often than not, with its second argument a pointer to an automatic variable in the caller's stack. Therefore, to avoid copying garbage afterwards when calling gnet_stats_finish_copy(), this data is better copied to a dynamically allocated memory that gets freed after use. [xiyou.wangcong@gmail.com: remove a useless kfree()] Signed-off-by: Ignacy Gawędzki <ignacy.gawedzki@green-communications.fr> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge tag 'mfd-for-linus-3.20' of ↵Linus Torvalds2015-02-1844-109/+3229
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd Pull MFD updates from Lee Jones: "Changes to existing drivers: - fixr platform device collision; da9052, wm8994-core - regmap configuration amendments; tps65218 - fix runtime PM deadlock; rtsx_usb - remove unused/superfluous code; db8500-prcmu, omap-usb-host - enable watchdog timer; lpc_sch - add start/stop RX URBs helpers; dln2 - remove platform device (DT only); max77686, max77802 - support suspend and resume; dln2 - add Device Tree support; da9063 - extra error checking; intel_soc_pmic - const'ify all the things; 88pm860x, hi6421-pmic, intel_soc_pmic, max77686, lm3533, retu, pcf50633, davinci_voicecodec, smsc-ece1099, tps65218, mc13xxx, tps65217, twl-core, twl6040 New drivers/supported devices: - new driver for Richtek RT5033 - new driver for DA9150 Charger and FuelGauge - new driver for Qualcomm Resource Power Manager (RPM) - add support for the ir-clk into sun6i-prcm - add support for FuelGauge into axp20x" * tag 'mfd-for-linus-3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (32 commits) mfd: intel_soc_pmic: Add missing error check for devm_kzalloc mfd: rtsx_usb: Defer autosuspend while card exists mfd: devicetree: Add bindings for DA9063 mfd: da9063: Add device tree support regulator: qcom-rpm: Add missing state flag in call to RPM mfd: qcom-rpm: Driver for the Qualcomm RPM mfd: devicetree: bindings: Add Qualcomm RPM DT binding mfd: max77686/802: Remove support for board files mfd: omap-usb-host: Remove some unused functions mfd: twl6040: Constify struct regmap_config and reg_default array mfd: twl-core: Constify struct regmap_config and reg_default array mfd: tps65217: Constify struct regmap_config mfd: mc13xxx: i2c/spi: Constify struct regmap_config mfd: tps65218: Constify struct regmap_config mfd: smsc-ece1099: Constify struct regmap_config mfd: davinci_voicecodec: Constify struct regmap_config mfd: pcf50633: Constify struct regmap_config mfd: retu: Constify struct regmap_config mfd: lm3533: Constify struct regmap_config mfd: max77686: Constify struct regmap_config ...
| * mfd: intel_soc_pmic: Add missing error check for devm_kzallocKiran Padwal2015-02-161-0/+3
| | | | | | | | | | | | | | | | This patch add a missing check on the return value of devm_kzalloc, which would cause a NULL pointer dereference in a OOM situation. Signed-off-by: Kiran Padwal <kiran.padwal@smartplayin.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: rtsx_usb: Defer autosuspend while card existsRoger Tseng2015-01-221-0/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A card insertion happens after the lastest polling before reader is suspended may never have a chance to be detected. Under current 1-HZ polling interval setting in mmc_core, the worst case of such undetectablility is about 1 second. To further reduce the undetectability, detect card slot again in suspend method and defer the autosuspend if the slot is loaded. The default 2 second autosuspend delay of USB subsystem should let the next polling detects the card. Signed-off-by: Roger Tseng <rogerable@realtek.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: devicetree: Add bindings for DA9063Steve Twiss2015-01-221-0/+93
| | | | | | | | | | | | | | | | Add device tree bindings for DA9063 regulators; Real-Time Clock and Watchdog. Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: da9063: Add device tree supportSteve Twiss2015-01-223-0/+12
| | | | | | | | | | | | | | | | Add device tree support for DA9063 regulators; Real-Time Clock and Watchdog. Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * regulator: qcom-rpm: Add missing state flag in call to RPMBjorn Andersson2015-01-221-0/+1
| | | | | | | | | | | | | | | | | | This adds the missing state parameter to the call down to the RPM. This is currently hard coded to the active state, as that's all we're supporting at this moment. Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: qcom-rpm: Driver for the Qualcomm RPMBjorn Andersson2015-01-224-0/+609
| | | | | | | | | | | | | | | | | | | | Driver for the Resource Power Manager (RPM) found in Qualcomm 8660, 8960 and 8064 based devices. The driver exposes resources that child drivers can operate on; to implementing regulator, clock and bus frequency drivers. Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: devicetree: bindings: Add Qualcomm RPM DT bindingBjorn Andersson2015-01-222-0/+224
| | | | | | | | | | | | | | | | Add binding for the Qualcomm Resource Power Manager (RPM) found in 8660, 8960 and 8064 based devices. Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: max77686/802: Remove support for board filesKrzysztof Kozlowski2015-01-224-52/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The driver is used only on Exynos based boards with DTS support. After removal of board file support from max77686 and max77802 regulator drivers, the MFD driver can be converted to DTS-only version. This simplifies a little the code: 1. No dead (unused) entries in platform_data structure. 2. More code removed. 3. Regulator driver does not depend on allocated memory from MFD driver. 4. It makes also easier extending the regulator driver. Add to the max77686 MFD driver dependency on CONFIG_OF because without DTS the regulator drivers (max77686 and max77802) won't bind. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Reviewed-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: omap-usb-host: Remove some unused functionsRickard Strandqvist2015-01-221-10/+0
| | | | | | | | | | | | | | | | | | | | Removes some functions that are not used anywhere: usbhs_readb() usbhs_writeb() This was partially found by using a static code analysis program called cppcheck. Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: twl6040: Constify struct regmap_config and reg_default arrayKrzysztof Kozlowski2015-01-221-2/+2
| | | | | | | | | | | | | | | | | | | | The regmap_config struct may be const because it is not modified by the driver and regmap_init() accepts pointer to const. Make array of struct reg_default const as well. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: twl-core: Constify struct regmap_config and reg_default arrayKrzysztof Kozlowski2015-01-221-4/+4
| | | | | | | | | | | | | | | | | | | | The regmap_config struct may be const because it is not modified by the driver and regmap_init() accepts pointer to const. Make array of struct reg_default const as well. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: tps65217: Constify struct regmap_configKrzysztof Kozlowski2015-01-221-1/+1
| | | | | | | | | | | | | | | | | | The regmap_config struct may be const because it is not modified by the driver and regmap_init() accepts pointer to const. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: mc13xxx: i2c/spi: Constify struct regmap_configKrzysztof Kozlowski2015-01-222-2/+2
| | | | | | | | | | | | | | | | The regmap_config struct may be const because it is not modified by the driver and regmap_init() accepts pointer to const. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: tps65218: Constify struct regmap_configKrzysztof Kozlowski2015-01-221-1/+1
| | | | | | | | | | | | | | | | The regmap_config struct may be const because it is not modified by the driver and regmap_init() accepts pointer to const. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: smsc-ece1099: Constify struct regmap_configKrzysztof Kozlowski2015-01-221-1/+1
| | | | | | | | | | | | | | | | The regmap_config struct may be const because it is not modified by the driver and regmap_init() accepts pointer to const. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: davinci_voicecodec: Constify struct regmap_configKrzysztof Kozlowski2015-01-221-1/+1
| | | | | | | | | | | | | | | | The regmap_config struct may be const because it is not modified by the driver and regmap_init() accepts pointer to const. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: pcf50633: Constify struct regmap_configKrzysztof Kozlowski2015-01-221-1/+1
| | | | | | | | | | | | | | | | The regmap_config struct may be const because it is not modified by the driver and regmap_init() accepts pointer to const. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: retu: Constify struct regmap_configKrzysztof Kozlowski2015-01-221-1/+1
| | | | | | | | | | | | | | | | The regmap_config struct may be const because it is not modified by the driver and regmap_init() accepts pointer to const. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: lm3533: Constify struct regmap_configKrzysztof Kozlowski2015-01-221-1/+1
| | | | | | | | | | | | | | | | The regmap_config struct may be const because it is not modified by the driver and regmap_init() accepts pointer to const. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: max77686: Constify struct regmap_configKrzysztof Kozlowski2015-01-221-3/+3
| | | | | | | | | | | | | | | | The regmap_config struct may be const because it is not modified by the driver and regmap_init() accepts pointer to const. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: intel_soc_pmic: Constify struct regmap_configKrzysztof Kozlowski2015-01-222-2/+2
| | | | | | | | | | | | | | | | The regmap_config struct may be const because it is not modified by the driver and regmap_init() accepts pointer to const. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: hi6421-pmic: Constify struct regmap_configKrzysztof Kozlowski2015-01-221-1/+1
| | | | | | | | | | | | | | | | The regmap_config struct may be const because it is not modified by the driver and regmap_init() accepts pointer to const. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: 88pm860x-core: Constify struct regmap_configKrzysztof Kozlowski2015-01-221-1/+1
| | | | | | | | | | | | | | | | The regmap_config struct may be const because it is not modified by the driver and regmap_init() accepts pointer to const. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: axp20x: Add support for fuel gauge cell driverTodd E Brandt2015-01-221-2/+41
| | | | | | | | | | | | | | | | | | | | | | mfd/axp20x: add support for fuel gauge cell Register definitions and platform data structure for fuel gauge cell devices. Signed-off-by: Todd Brandt <todd.e.brandt@intel.com> Acked-by: Jacob Pan <jacob.jun.pan@linux.intel.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: wm8994: Set mfd id-base for regulator devs creation to avoid conflictsInha Song2015-01-221-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | After commit: 6e3f62f0793e ("mfd: core: Fix platform-device id generation") We must set the id base when register a duplicate name of mfd_cell. If not, duplicate filename error was reported. - sysfs: cannot create duplicate filename '/devices/.../wm8994-ldo' Signed-off-by: Inha Song <ideal.song@samsung.com> Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: dln2: Add suspend/resume functionalityOctavian Purdila2015-01-221-0/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Without suspend/resume functionality in the USB driver the USB core will disconnect and reconnect the DLN2 port and because the GPIO framework does not yet support removal of an in-use controller a suspend/resume operation will result in a crash. This patch provides suspend and resume functions for the DLN2 driver so that the above scenario is avoided, if the host controller does not drop VBUS during suspend, since in this case the device state is preserved. We chose not implemented reset_resume so that if the host controller does drop VBUS the resume path will go through above the disconnect/reconnect process since it is probably better to fix the GPIO framework disconnect issue then to save and restore the device state for every driver. Signed-off-by: Octavian Purdila <octavian.purdila@intel.com> Reviewed-by: Johan Hovold <johan@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: dln2: Add start/stop RX URBs helpersOctavian Purdila2015-01-221-10/+41
| | | | | | | | | | | | | | | | This is in preparation for adding suspend / resume support. Signed-off-by: Octavian Purdila <octavian.purdila@intel.com> Reviewed-by: Johan Hovold <johan@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: lpc_sch: Enable WDT for Intel Quark X1000Ong Boon Leong2015-01-221-0/+1
| | | | | | | | | | | | | | | | Quark X1000 uses ie6xx_wdt driver for WDT. To enable WDT, we declare WDT IO resource size for Quark X1000. Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: Add support for DA9150 combined charger & fuel-gauge deviceAdam Thomson2015-01-225-1/+1649
| | | | | | | | | | | | | | | | DA9150 is a combined Charger and Fuel-Gauge IC, with additional GPIO and GPADC functionality. Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: db8500-prcmu: Remove unused functionRickard Strandqvist2015-01-221-9/+0
| | | | | | | | | | | | | | | | | | | | | | Remove the function prcmu_get_boot_status() that is not used anywhere. This was partially found by using a static code analysis program called cppcheck. Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: sun6i-prcm: Add support for the ir-clkHans de Goede2015-01-221-0/+14
| | | | | | | | | | | | | | Add support for the ir-clk which is part of the sun6i SoC prcm module. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * mfd: rt5033: Add Richtek RT5033 driver core.Beomho Seo2015-01-225-0/+477
| | | | | | | | | | | | | | | | | | | | | | This patch adds a new driver for Richtek RT5033 driver. RT5033 is a Multifunction device which includes battery charger, fuel gauge, flash LED current source, LDO and synchronous Buck converter. It is interfaced to host controller using I2C interface. Signed-off-by: Beomho Seo <beomho.seo@samsung.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
| * Merge tag 'mfd-fixes-3.19' into HEADLee Jones2015-01-223-13/+14
| |\ | | | | | | | | | | | | | | | | | | - Avoid platform ID collision in da9052 - Skip caching volatile registers in tps65218 - Use correct address base in tps65218 - Repair deadlock on suspend in rtsx_usb
* | \ Merge tag 'pwm/for-3.20-rc1' of ↵Linus Torvalds2015-02-1810-21/+704
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm Pull pwm updates from Thierry Reding: "This contains two new drivers, one for Allwinner SoCs and the other for Imagination Technologies' Pistachio SoC. Complementing this are a couple of fixes to the Atmel HLCDC PWM and STi PWM drivers as well as minor cleanups to the core and the Tegra driver" * tag 'pwm/for-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: pwm: tegra: Use NSEC_PER_SEC pwm: Remove unnecessary check before of_node_put() pwm: Add device tree binding document for IMG PWM DAC pwm: Imagination Technologies PWM DAC driver pwm: sti: Maintain a bitmap of configured devices pwm: sunxi: document OF bindings pwm: Add Allwinner SoC support pwm: atmel-hlcdc: Prevent division by zero pwm: atmel-hlcdc: Depend on HAVE_CLK
| * | | pwm: tegra: Use NSEC_PER_SECThierry Reding2015-02-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of using the literal value for the number of nanoseconds per second, use the macro instead to increase readability. Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | pwm: Remove unnecessary check before of_node_put()Markus Elfring2015-02-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The of_node_put() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | pwm: Add device tree binding document for IMG PWM DACNaidu Tellapati2015-01-301-0/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add binding document for IMG Pulse Width Modulator (PWM) DAC present on the Pistachio SOC. The PWM DAC has four channels. Signed-off-by: Naidu Tellapati <Naidu.Tellapati@imgtec.com> Signed-off-by: Sai Masarapu <Sai.Masarapu@imgtec.com> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | pwm: Imagination Technologies PWM DAC driverNaidu Tellapati2015-01-303-0/+263
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Pistachio SOC from Imagination Technologies includes a Pulse Width Modulation DAC which produces 1 to 4 digital bit-outputs which represent digital waveforms. These PWM outputs are primarily in charge of controlling backlight LED devices. Reviewed-by: Andrew Bresticker <abrestic@chromium.org> Signed-off-by: Naidu Tellapati <Naidu.Tellapati@imgtec.com> Signed-off-by: Sai Masarapu <Sai.Masarapu@imgtec.com> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com> Reviewed-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com> [thierry.reding: fixup license header as discussed on list] Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | pwm: sti: Maintain a bitmap of configured devicesAjit Pal Singh2015-01-301-19/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch introduces a bitmap which is used to keep track of the pwm channels which have been configured in a pwm chip. The method used earlier to find the number of configured channels, was to count the pwmdevices with PWMF_REQUESTED field set and period value configured. This was not correct and failed when of_pwm_get()/pwm_get() and then pwm_config() was used. Signed-off-by: Ajit Pal Singh <ajitpal.singh@st.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | pwm: sunxi: document OF bindingsAlexandre Belloni2015-01-301-0/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is the documentation for the Allwinner SoCs PWM bindings. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | pwm: Add Allwinner SoC supportAlexandre Belloni2015-01-303-0/+377
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a generic PWM framework driver for the PWM controller found on Allwinner SoCs. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | pwm: atmel-hlcdc: Prevent division by zeroBoris BREZILLON2015-01-301-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The slow and system clock should never return a rate of zero, but this might happen if the clocks property defined in the DT is referencing the wrong clocks. Prevent any division by zero from happening by testing the clk_freq value before calling do_div(). Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | pwm: atmel-hlcdc: Depend on HAVE_CLKThierry Reding2015-01-301-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The include/linux/clk.h header defines dummy implementations for the various clk_*() functions if HAVE_CLK is not selected to improve build coverage in randconfig builds. The dummy implementation of clk_get_rate() returns 0, which causes the Atmel HLCDC PWM driver's atmel_hlcdc_pwm_config() implementation to end up calling: do_div(clk_period_ns, 0) On x86, do_div(n, base) will end up evaluating to this: n >>= ilog2(base) with base = 0, the implementation of ilog2() will call ____ilog2_NaN(), which is purposely undefined and results in a linker failure: ERROR: "____ilog2_NaN" [drivers/pwm/pwm-atmel-hlcdc.ko] undefined! The implementation of do_div() checks that base is a power of 2 before calling ilog2(). The compiler doesn't optimize this away, presumably because is_power_of_2() is an inline function and the compiler doesn't or can't inspect it closely enough. ilog2() being a macro it still ends up generating the ____ilog2_NaN() because of the constant 0. The root of the problem is that the driver really should be checking before possibly dividing by zero. That should eventually be fixed, but for now just assume that the clock runs at a sensible frequency when available. Reported-by: Jim Davis <jim.epost@gmail.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* | | | Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds2015-02-1871-1911/+4736
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull dmaengine updates from Vinod Koul: "This update brings: - the big cleanup up by Maxime for device control and slave capabilities. This makes the API much cleaner. - new IMG MDC driver by Andrew - new Renesas R-Car Gen2 DMA Controller driver by Laurent along with bunch of fixes on rcar drivers - odd fixes and updates spread over driver" * 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (130 commits) dmaengine: pl330: add DMA_PAUSE feature dmaengine: pl330: improve pl330_tx_status() function dmaengine: rcar-dmac: Disable channel 0 when using IOMMU dmaengine: rcar-dmac: Work around descriptor mode IOMMU errata dmaengine: rcar-dmac: Allocate hardware descriptors with DMAC device dmaengine: rcar-dmac: Fix oops due to unintialized list in error ISR dmaengine: rcar-dmac: Fix spinlock issues in interrupt dmaenegine: edma: fix sparse warnings dmaengine: rcar-dmac: Fix uninitialized variable usage dmaengine: shdmac: extend PM methods dmaengine: shdmac: use SET_RUNTIME_PM_OPS() dmaengine: pl330: fix bug that cause start the same descs in cyclic dmaengine: at_xdmac: allow muliple dwidths when doing slave transfers dmaengine: at_xdmac: simplify channel configuration stuff dmaengine: at_xdmac: introduce save_cc field dmaengine: at_xdmac: wait for in-progress transaction to complete after pausing a channel ioat: fail self-test if wait_for_completion times out dmaengine: dw: define DW_DMA_MAX_NR_MASTERS dmaengine: dw: amend description of dma_dev field dmatest: move src_off, dst_off, len inside loop ...
| * | | | dmaengine: pl330: add DMA_PAUSE featureRobert Baldyga2015-02-161-0/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | DMA_PAUSE command is used for halting DMA transfer on chosen channel. It can be useful when we want to safely read residue before terminating all requests on channel. Otherwise there can be situation when some data is transferred before channel termination but after reading residue, which obviously results with data loss. To avoid this situation we can pause channel, read residue and then terminate all requests. This scenario is common, for example, in serial port drivers. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
OpenPOWER on IntegriCloud