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path: root/drivers/spi
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2014-03-30Merge remote-tracking branches 'spi/topic/xilinx' and 'spi/topic/xtfpga' ↵Mark Brown4-20/+190
into spi-next
2014-03-30Merge remote-tracking branches 'spi/topic/sunxi', 'spi/topic/tegra114', ↵Mark Brown11-459/+1005
'spi/topic/ti-qspi', 'spi/topic/ti-ssp', 'spi/topic/topcliff-pch', 'spi/topic/txx9', 'spi/topic/xcomm' and 'spi/topic/xfer' into spi-next
2014-03-30Merge remote-tracking branches 'spi/topic/s3c64xx', 'spi/topic/sc18is602', ↵Mark Brown8-507/+324
'spi/topic/sh-hspi', 'spi/topic/sh-msiof', 'spi/topic/sh-sci', 'spi/topic/sirf' and 'spi/topic/spidev' into spi-next
2014-03-30Merge remote-tracking branches 'spi/topic/omap-uwire', 'spi/topic/omap100k', ↵Mark Brown10-487/+1461
'spi/topic/omap2', 'spi/topic/orion', 'spi/topic/pl022', 'spi/topic/qup', 'spi/topic/rspi' and 'spi/topic/s3c24xx' into spi-next
2014-03-30Merge remote-tracking branches 'spi/topic/imx', 'spi/topic/init', ↵Mark Brown30-146/+29
'spi/topic/mpc512x-psc', 'spi/topic/mpc52xx', 'spi/topic/mxs', 'spi/topic/nuc900', 'spi/topic/oc-tiny' and 'spi/topic/octeon' into spi-next
2014-03-30Merge remote-tracking branches 'spi/topic/drivers', 'spi/topic/dw', ↵Mark Brown12-124/+111
'spi/topic/efm32', 'spi/topic/ep93xx', 'spi/topic/fsl', 'spi/topic/fsl-dspi', 'spi/topic/fsl-espi' and 'spi/topic/gpio' into spi-next
2014-03-30Merge remote-tracking branches 'spi/topic/bus-num', 'spi/topic/cleanup', ↵Mark Brown20-289/+175
'spi/topic/clps711x', 'spi/topic/coldfire', 'spi/topic/completion' and 'spi/topic/davinci' into spi-next
2014-03-30Merge remote-tracking branches 'spi/topic/altera', 'spi/topic/atmel', ↵Mark Brown12-70/+30
'spi/topic/au1550', 'spi/topic/bcm63xx', 'spi/topic/bcm63xx-hsspi', 'spi/topic/bfin5xx', 'spi/topic/bitbang' and 'spi/topic/bpw' into spi-next
2014-03-30Merge remote-tracking branch 'spi/topic/dma' into spi-nextMark Brown2-108/+279
2014-03-30Merge remote-tracking branch 'spi/topic/core' into spi-nextMark Brown1-18/+28
2014-03-30Merge remote-tracking branch 'spi/fix/core' into spi-linusMark Brown1-3/+3
2014-03-30spi: Fix handling of cs_change in core implementationMark Brown1-3/+3
The core implementation of cs_change didn't follow the documentation which says that cs_change in the middle of the transfer means to briefly deassert chip select, instead it followed buggy drivers which change the polarity of chip select. Use a delay of 10us between deassert and reassert simply from pulling numbers out of a hat. Reported-by: Gerhard Sittig <gsi@denx.de> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-29spi: bitbang: Make spi_bitbang_stop() return voidAxel Lin4-11/+6
spi_bitbang_stop() never fails, so make it return void. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-29spi: mpc52xx: Convert to use bits_per_word_maskAxel Lin1-12/+1
This controller only supports 8-bit word length. Set bits_per_word_mask so spi core will reject transfers that attempt to use an unsupported bits_per_word value. Also remove the duplicate code to test spi->mode, it is done by spi core. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-29spi: omap-100k: Fix memory leakAxel Lin1-1/+1
The memory allocated for cs is not freed anywhere. Convert to use devm_kzalloc to fix the memory leak. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-28spi: dw: Don't call kfree for memory allocated by devm_kzallocAxel Lin1-7/+0
With devm_kzalloc, the memory is automatically freed when spi_device detach from the bus. Fixes: commit 43f627ac9de42 (spi: dw: fix memory leak on error path) Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Mark Brown <broonie@linaro.org> Cc: stabe@vger.kernel.org
2014-03-28spi: fsl-dspi: Fix memory leakAxel Lin1-2/+2
The memory allocated for chip is not freed anywhere. Convert to use devm_kzalloc to fix the memory leak. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-27spi: omap-uwire: add missing iounmapNishanth Menon1-0/+1
This fixes the following coccicheck warning: linux-2.6/drivers/spi/spi-omap-uwire.c:485:2-8: ERROR: missing iounmap; ioremap on line 471 and execution via conditional on line 481 Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-27spi: clps711x: Convert to use master->max_speed_hzAxel Lin1-7/+7
Set highest transfer speed to master->max_speed_hz and then we can remove hw->max_speed. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-27spi: clps711x: Enable driver compilation with COMPILE_TESTAxel Lin1-1/+1
This helps increasing build testing coverage. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-26spi: omap-uwire: Remove full duplex checkAxel Lin1-4/+0
This driver sets the SPI_MASTER_HALF_DUPLEX flag, so the spi core will check transfers to ensure they are not full duplex. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-25spi: Do not require a completionMark Brown1-2/+0
There is no real reason why we require transfers to have a completion and the only user of the completion now checks to see if one has been provided before using it so stop enforcing this. This makes it more convenient for drivers to chain multiple asynchronous transfers together. Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-25spi: topcliff-pch: Transform noisy message to dev_vdbgAlexander Stein1-1/+1
If during a SPI transfer with len larger than PCH_MAX_FIFO_DEPTH and the IRQ handler happens to be called when the transmit FIFO is already empty, and SPSR_FI_BIT is set consequently, the message "spi_master spi32766: pch_spi_handler_sub : Transfer is not completed" is spammed to the systemlog, because tx_index has already increased further due to the next bytes to be written. This case is uncritical as new bytes have already been written. Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-25spi: coldfire-qspi: Simplify the code to set register bits for transfer speedAxel Lin1-4/+1
spi core will use spi->max_speed_hz as transfer speed if the transfer speed was not set. So we don't need to test t->speed_hz in mcfqspi_transfer_one(). Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-25spi: bcm63xx: Remove unused define for PFXAxel Lin1-2/+0
Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-25spi: efm32: use $vendor,$device scheme for compatible stringUwe Kleine-König1-0/+3
Wolfram Sang pointed out that "efm32,$device" is non-standard. So use the common scheme and prefix device with "efm32-". The old compatible string is left in place until arch/arm/boot/dts/efm32* is fixed. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Mark Brown <broonie@linaro.org> Cc: stable@vger.kernel.org
2014-03-25spi: clps711x: Remove <mach/hardware.h> dependencyAlexander Shiyan1-29/+57
This patch removes <mach/hardware.h> dependency. This is performed by replace hard coded used memory regions and interrupt to getting these values from resources passed to the driver. For the system-wide registers we now able to use SYSCON driver. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-24spi: topcliff-pch: Properly unregister platform devices on probe() error pathsAxel Lin1-2/+3
Ensure all registered platform devices are unregistered on probe() error paths. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-21spi: fsl-espi: Remove unused bits_per_word variable in fsl_espi_bufsAxel Lin1-5/+0
Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-21spi: altera: Remove the code to get unused platform_dataAxel Lin1-4/+1
The definition of struct altera_spi_platform_data does not exist in current tree. So remove the code to get platform_data which is never used. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-21spi: fsl-lib: Fix memory leak of pinfoAxel Lin1-10/+4
of_mpc8xxx_spi_probe() allocates memory for pinfo but the memory is not freed anywhere. of_mpc8xxx_spi_probe() is called in .probe() and pinfo should be freed in .remove(), so convert kzalloc to devm_kzalloc to fix the memory leak. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-21spi: xtensa-xtfpga: Enable driver compilation with COMPILE_TESTAxel Lin1-1/+1
This helps increasing build testing coverage. Signed-off-by: Axel Lin <axel.lin@ingics.com> Reviewed-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-21spi: nuc900: Fix setting multiple bits settings in registerAxel Lin1-10/+8
The correct way to set multiple bits settings is always clear these bit fields before set new settings. Current code does not cause problem because the reset value of these bit fields are 0, and these settings only set once during probe. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-21spi: atmel: fix printk format warningsRandy Dunlap1-3/+3
Fix printk format warning by using %p extension 'ad' for dma_addr_t. drivers/spi/spi-atmel.c:1228:3: warning: format '%x' expects argument of type 'unsigned int', but argument 7 has type 'dma_addr_t' [-Wformat] drivers/spi/spi-atmel.c:1228:3: warning: format '%x' expects argument of type 'unsigned int', but argument 9 has type 'dma_addr_t' [-Wformat] Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-18spi: remove obsolete spi-ti-ssp driverArnd Bergmann3-386/+0
The tnetv107x platform is getting removed, so this driver will not be needed any more. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Sekhar Nori <nsekhar@ti.com> Acked-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-17spi: core: Use master->max_speed_hz as transfer speed when xfer->speed_hz > ↵Axel Lin1-8/+6
master->max_speed_hz When xfer->speed_hz is greater than master->max_speed_hz, it's generally safe to use master->max_speed_hz as transfer speed. Thus use master->max_speed_hz as transfer speed rather than return error when xfer->speed_hz > master->max_speed_hz. Signed-off-by: Axel Lin <axel.lin@ingics.com> Tested-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-15spi: efm32: properly namespace location propertyUwe Kleine-König1-1/+4
While reviewing an i2c driver for efm32 that needs a similar property Wolfram Sang pointed out that "location" is a too generic name for something that is efm32 specific. So add an appropriate namespace and fall back to the generic name in case of failure. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-13spi: sh-sci: Prevent NULL pointer dereferenceAxel Lin1-1/+6
If sp->info is NULL, we will hit NULL pointer dereference in probe() while setting bus_num and num_chipselect for master: sp->bitbang.master->bus_num = sp->info->bus_num; sp->bitbang.master->num_chipselect = sp->info->num_chipselect; Thus add NULL test for sp->info in probe() to prevent NULL pointer dereference. Signed-off-by: Axel Lin <axel.lin@ingics.com> Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-13spi: sirf: Add missing spi_master_{resume,suspend} calls to PM callbacksAxel Lin1-1/+6
This is required since commit 2025172e3280 "spi/bitbang: Use core message pump". spi-bitbang now uses core message pump, so it needs to call spi_master_suspend/ spi_master_resume to stop/start the queue while suspend/resume. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-13spi: altera: Use bits_per_word_maskAxel Lin1-0/+1
This driver does not work for bits_per_word greater than 16. Set bits_per_word_mask so spi core will reject transfers that attempt to use an unsupported bits_per_word value. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-13spi: oc-tiny: Remove unneeded NULL checking for hw->bitbang.masterAxel Lin1-2/+0
We already has NULL test for master after calling spi_alloc_master(). Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-13spi: clps711x: Remove duplicate code to set default bits_per_word and max speedAxel Lin1-5/+4
In the implementation of __spi_validate(), spi core will set transfer bits_per_word and max speed as spi device default if it is not set for this transfer. So we can remove the same logic in spi_clps711x_setup_xfer() and spi_clps711x_transfer_one(). Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-13spi: sc18is602: Convert to let spi core validate transfer speedAxel Lin1-10/+3
Set master->max_speed_hz and master->min_speed_hz then spi core will handle checking transfer speed. So we can remove the same checking in this driver. This patch also remove testing if hz is 0 because spi->max_speed_hz will be default set to master->min_speed_hz if it was not set. So the transfer speed will never set to 0. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-13spi: add xtfpga SPI controller driverMax Filippov3-0/+184
This simple SPI master controller is built into xtfpga bitstreams. It always transfers 16 bit words in SPI mode 0, automatically asserting CS on transfer start and deasserting on end. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-12spi: efm32: Clean up non-DT pathsAxel Lin1-23/+8
This is a DT-only driver, so remove all non-DT paths. of_gpio_named_count() may fail, thus also add checking it's return value. efm32_spi_probe_dt() never fails, make it return void. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-11spi: rspi: Add runtime PM support, using spi core auto_runtime_pmGeert Uytterhoeven1-7/+5
Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-11spi: sh-msiof: Convert to spi core auto_runtime_pm frameworkGeert Uytterhoeven1-24/+1
Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-11spi: sh-hspi: Add missing call to pm_runtime_disable() in failure pathGeert Uytterhoeven1-1/+3
Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-10spi: coldfire-qspi: Prevent NULL pointer dereferenceAxel Lin1-2/+7
If pdata->cs_control is NULL, we will hit NULL pointer dereference in mcfqspi_cs_select() and mcfqspi_cs_deselect(). Thus add NULL test for pdata->cs_control in probe(). Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-10spi: clps711x: Provide label argument for devm_gpio_requestAxel Lin1-7/+3
The label argument was removed by commit 989847967cd762 spi: clps711x: Use devm_gpio_request(), add it back. This makes it easier to know the gpio usage in /sys/kernel/debug/gpio. Also remove unnecessary gpio_is_valid() checking, devm_gpio_request() returns error if the requested gpio is invalid. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
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