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path: root/drivers/spi/spi-qup.c
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2016-09-30Merge remote-tracking branches 'spi/topic/octeon', 'spi/topic/pic32-sqi', ↵Mark Brown
'spi/topic/pxa2xx' and 'spi/topic/qup' into spi-next
2016-09-01spi: qup: skip clk_disable_unprepare if the device is already runtime suspendedSudeep Holla
If the spi device is already runtime suspended, if spi_qup_suspend is executed during suspend-to-idle or suspend-to-ram it will result in the a splat from unpreparing a non-prepared clock. This patch fixes the issue by executing clk_disable_unprepare conditionally in spi_qup_suspend. [Reworded commit message to remove irrelevant backtrace -- broonie] Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Tested-by: Andy Gross <andy.gross@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2016-07-27spi: qup: Remove spi_master_put in spi_qup_remove()Wei Yongjun
The call to spi_master_put() in spi_qup_remove() is redundant since the master is registered using devm_spi_register_master() and no reference hold by using spi_master_get() in spi_qup_remove(). This is detected by Coccinelle semantic patch. Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2016-05-02spi: qup: Add spi_master_put in remove functionPramod Gurav
Release memory allocated for spi master by calling spi_master_put in .remove function. Signed-off-by: Pramod Gurav <pramod.gurav@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2016-05-02spi: qup: Handle clocks in pm_runtime suspend and resumePramod Gurav
Clocks must ne disabled in pm_runtime to achieve some power saving. Enable the clocks when the device is runtime resumed during a transfer. Signed-off-by: Pramod Gurav <pramod.gurav@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-11Merge remote-tracking branches 'spi/topic/qup', 'spi/topic/rockchip', ↵Mark Brown
'spi/topic/rspi', 'spi/topic/s3c64xx' and 'spi/topic/sc18is602' into spi-next
2015-03-07spi: qup: Add DMA capabilitiesAndy Gross
This patch adds DMA capabilities to the spi-qup driver. If DMA channels are present, the QUP will use DMA instead of block mode for transfers to/from SPI peripherals for transactions larger than the length of a block. Signed-off-by: Andy Gross <agross@codeaurora.org> Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org> Reviewed-by: Ivan T. Ivanov <iivanov@mm-sol.com Signed-off-by: Mark Brown <broonie@kernel.org>
2015-03-07spi: qup: Fix cs-num DT property parsingIvan T. Ivanov
num-cs is 32 bit property, don't read just upper 16 bits. Fixes: 4a8573abe965 (spi: qup: Remove chip select function) Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
2014-12-29spi: qup: Add SPI_CPOL configuration supportIvan T. Ivanov
Device support SPI_CPOL, but driver have missed to add support for this configuration. Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-12-18Merge tag 'pm+acpi-3.19-rc1-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull more ACPI and power management updates from Rafael Wysocki: "These are regression fixes (leds-gpio, ACPI backlight driver, operating performance points library, ACPI device enumeration messages, cpupower tool), other bug fixes (ACPI EC driver, ACPI device PM), some cleanups in the operating performance points (OPP) framework, continuation of CONFIG_PM_RUNTIME elimination, a couple of minor intel_pstate driver changes, a new MAINTAINERS entry for it and an ACPI fan driver change needed for better support of thermal management in user space. Specifics: - Fix a regression in leds-gpio introduced by a recent commit that inadvertently changed the name of one of the properties used by the driver (Fabio Estevam). - Fix a regression in the ACPI backlight driver introduced by a recent fix that missed one special case that had to be taken into account (Aaron Lu). - Drop the level of some new kernel messages from the ACPI core introduced by a recent commit to KERN_DEBUG which they should have used from the start and drop some other unuseful KERN_ERR messages printed by ACPI (Rafael J Wysocki). - Revert an incorrect commit modifying the cpupower tool (Prarit Bhargava). - Fix two regressions introduced by recent commits in the OPP library and clean up some existing minor issues in that code (Viresh Kumar). - Continue to replace CONFIG_PM_RUNTIME with CONFIG_PM throughout the tree (or drop it where that can be done) in order to make it possible to eliminate CONFIG_PM_RUNTIME (Rafael J Wysocki, Ulf Hansson, Ludovic Desroches). There will be one more "CONFIG_PM_RUNTIME removal" batch after this one, because some new uses of it have been introduced during the current merge window, but that should be sufficient to finally get rid of it. - Make the ACPI EC driver more robust against race conditions related to GPE handler installation failures (Lv Zheng). - Prevent the ACPI device PM core code from attempting to disable GPEs that it has not enabled which confuses ACPICA and makes it report errors unnecessarily (Rafael J Wysocki). - Add a "force" command line switch to the intel_pstate driver to make it possible to override the blacklisting of some systems in that driver if needed (Ethan Zhao). - Improve intel_pstate code documentation and add a MAINTAINERS entry for it (Kristen Carlson Accardi). - Make the ACPI fan driver create cooling device interfaces witn names that reflect the IDs of the ACPI device objects they are associated with, except for "generic" ACPI fans (PNP ID "PNP0C0B"). That's necessary for user space thermal management tools to be able to connect the fans with the parts of the system they are supposed to be cooling properly. From Srinivas Pandruvada" * tag 'pm+acpi-3.19-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (32 commits) MAINTAINERS: add entry for intel_pstate ACPI / video: update the skip case for acpi_video_device_in_dod() power / PM: Eliminate CONFIG_PM_RUNTIME NFC / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM SCSI / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM ACPI / EC: Fix unexpected ec_remove_handlers() invocations Revert "tools: cpupower: fix return checks for sysfs_get_idlestate_count()" tracing / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM x86 / PM: Replace CONFIG_PM_RUNTIME in io_apic.c PM: Remove the SET_PM_RUNTIME_PM_OPS() macro mmc: atmel-mci: use SET_RUNTIME_PM_OPS() macro PM / Kconfig: Replace PM_RUNTIME with PM in dependencies ARM / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM sound / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM phy / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM video / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM tty / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM spi: Replace CONFIG_PM_RUNTIME with CONFIG_PM ACPI / PM: Do not disable wakeup GPEs that have not been enabled ACPI / utils: Drop error messages from acpi_evaluate_reference() ...
2014-12-13spi: Replace CONFIG_PM_RUNTIME with CONFIG_PMRafael J. Wysocki
After commit b2b49ccbdd54 (PM: Kconfig: Set PM_RUNTIME if PM_SLEEP is selected) PM_RUNTIME is always set if PM is set, so #ifdef blocks depending on CONFIG_PM_RUNTIME may now be changed to depend on CONFIG_PM. Replace CONFIG_PM_RUNTIME with CONFIG_PM everywhere under drivers/spi/. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Mark Brown <broonie@kernel.org>
2014-10-20spi: drop owner assignment from platform_driversWolfram Sang
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>
2014-08-04Merge remote-tracking branches 'spi/topic/orion', 'spi/topic/pl022', ↵Mark Brown
'spi/topic/qup', 'spi/topic/rockchip' and 'spi/topic/rspi' into spi-next
2014-06-22spi: qup: Remove chip select functionAndy Gross
This patch removes the chip select function. Chip select should instead be supported using GPIOs, defining the DT entry "cs-gpios", and letting the SPI core assert/deassert the chip select as it sees fit. The chip select control inside the controller is buggy. It is supposed to automatically assert the chip select based on the activity in the controller, but it is buggy and doesn't work at all. So instead we elect to use GPIOs. Signed-off-by: Andy Gross <agross@codeaurora.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-06-21spi: qup: Add support for v1.1.1Andy Gross
This patch adds support for v1.1.1 of the SPI QUP controller. Signed-off-by: Andy Gross <agross@codeaurora.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-06-21spi: qup: Fix order of spi_register_masterAndy Gross
This patch moves the devm_spi_register_master below the initialization of the runtime_pm. If done in the wrong order, the spi_register_master fails if any probed slave devices issue SPI transactions. Signed-off-by: Andy Gross <agross@codeaurora.org> Acked-by: Ivan T. Ivanov <iivanov@mm-sol.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-06-02Merge remote-tracking branches 'spi/topic/dw', 'spi/topic/fsl', ↵Mark Brown
'spi/topic/fsl-espi' and 'spi/topic/id-const' into spi-next
2014-05-14spi: qup: Correct selection of FIFO/Block modeAndy Gross
This patch fixes the calculation for determining whether to use FIFO or BLOCK mode. Signed-off-by: Andy Gross <agross@codeaurora.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-07spi: qup: Make of_device_id array constJingoo Han
Make of_device_id array const, because all OF functions handle it as const. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Reviewed-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-03spi: qup: Fix return value checking for pm_runtime_get_sync()Axel Lin
pm_runtime_get_sync() returns 1 if !CONFIG_PM_RUNTIME. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-02-26spi: qup: Get rid of using struct spi_qup_deviceAxel Lin
Current code uses struct spi_qup_device to store spi->mode and spi->chip_select settings. We can get these settings in spi_qup_transfer_one and spi_qup_set_cs without using struct spi_qup_device. Refactor the code a bit to remove spi_qup_setup(), spi_qup_cleanup(), and struct spi_qup_device. Signed-off-by: Axel Lin <axel.lin@ingics.com> Tested-by: Ivan T. Ivanov <iivanov@mm-sol.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-02-24spi: qup: Remove module versionAxel Lin
The module version is unlikely to be updated, use kernel version should be enough. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Ivan T. Ivanov <iivanov@mm-sol.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-02-23spi: qup: Fix build error due to a typoAxel Lin
Fix below build error when CONFIG_PM_RUNTIME=y: C [M] drivers/spi/spi-qup.o drivers/spi/spi-qup.c: In function 'spi_qup_pm_suspend_runtime': drivers/spi/spi-qup.c:712:12: error: 'QUP_CLOCK_AUTO_GATE' undeclared (first use in this function) drivers/spi/spi-qup.c:712:12: note: each undeclared identifier is reported only once for each function it appears in drivers/spi/spi-qup.c: In function 'spi_qup_pm_resume_runtime': drivers/spi/spi-qup.c:725:13: error: 'QUP_CLOCK_AUTO_GATE' undeclared (first use in this function) make[2]: *** [drivers/spi/spi-qup.o] Error 1 make[1]: *** [drivers/spi] Error 2 make: *** [drivers] Error 2 Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-02-23spi: qup: Convert ot let spi core handle checking transfer speedAxel Lin
Set master->max_speed_hz then spi core will handle checking transfer speed. So we can remove the same checking in this driver. Also remove checking spi->chip_select in spi_qup_setup(), the checking is done by spi core. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Ivan T. Ivanov <iivanov@mm-sol.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-02-23spi: qup: Remove spi_master_put in spi_qup_removeAxel Lin
This driver uses devm_spi_register_master() so don't explicitly call spi_master_put() in spi_qup_remove(). Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Ivan T. Ivanov <iivanov@mm-sol.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-02-20spi: Add Qualcomm QUP SPI controller supportIvan T. Ivanov
Qualcomm Universal Peripheral (QUP) core is an AHB slave that provides a common data path (an output FIFO and an input FIFO) for serial peripheral interface (SPI) mini-core. SPI in master mode supports up to 50MHz, up to four chip selects, programmable data path from 4 bits to 32 bits and numerous protocol variants. Cc: Alok Chauhan <alokc@codeaurora.org> Cc: Gilad Avidov <gavidov@codeaurora.org> Cc: Kiran Gunda <kgunda@codeaurora.org> Cc: Sagar Dharia <sdharia@codeaurora.org> Cc: dsneddon@codeaurora.org Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com> Signed-off-by: Mark Brown <broonie@linaro.org>
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