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path: root/drivers/spi/spi-topcliff-pch.c
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2014-12-22spi: Remove FSF mailing addressesJarkko Nikula1-4/+0
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-10-20spi: drop owner assignment from platform_driversWolfram Sang1-1/+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>
2014-07-31spi: topcliff-pch: don't hardcode PCI slot to get DMA deviceAndy Shevchenko1-2/+2
The DMA is a function 0 of the multifunction device where SPI host is attached. Thus, we may avoid to hardcode PCI slot number. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-07-17spi: topcliff-pch: Update error messages for dmaengine_prep_slave_sg() APIGeert Uytterhoeven1-4/+4
Commit 16052827d98fbc13c31ebad560af4bd53e2b4dd5 ("dmaengine/dma_slave: introduce inline wrappers") changed the code to use the new API, but forgot to update the error messages. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> -- v2: - New Signed-off-by: Mark Brown <broonie@linaro.org>
2014-04-29spi: topcliff-pch: remove unnecessary OOM messagesJingoo Han1-4/+1
The site-specific OOM messages are unnecessary, because they duplicate the MM subsystem generic OOM message. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-30Merge remote-tracking branches 'spi/topic/sunxi', 'spi/topic/tegra114', ↵Mark Brown1-41/+6
'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
2014-03-25spi: 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>
2014-03-24spi: 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>
2014-02-27spi-topcliff-pch: Fix probing when DMA mode is usedAlexander Stein1-5/+6
If during registering SPI master due to SPI device probing a SPI transfer is issued the DMA buffers are not allocated yet. This fixes the following oops: pch_spi 0000:02:0c.1: enabling device (0000 -> 0002) pch_spi 0000:02:0c.1: master is unqueued, this is deprecated BUG: unable to handle kernel NULL pointer dereference at (null) IP: [<c125aa05>] pch_spi_handle_dma+0x15c/0x6f4 [...] Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-02-19spi/topcliff-pch: Fix DMA channelAlexander Stein1-2/+2
bus_num might be asigned dynamically to e.g. 32766. In this case the calculated DMA channel based on SPI bus number is bogus. Use SPI channel number instead for calculation. Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-02-19spi/topcliff-pch: Fix debug messageAlexander Stein1-2/+1
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-02-15spi: topcliff-pch: Convert to use master->max_speed_hzAxel Lin1-36/+1
Set "master->max_speed_hz = PCH_MAX_BAUDRATE" then we can remove pch_spi_setup. In additional, pspi->max_speed_hz will never be 0 because it's default value will be set to master->max_speed_hz. Also remove list_empty checking in pch_spi_transfer() because the checking is done by spi core. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-23Merge remote-tracking branches 'spi/topic/fsl-espi', 'spi/topic/gpio', ↵Mark Brown1-1/+1
'spi/topic/hspi', 'spi/topic/mpc512x', 'spi/topic/msiof', 'spi/topic/nuc900', 'spi/topic/oc-tiny', 'spi/topic/omap', 'spi/topic/orion' and 'spi/topic/pci' into spi-linus
2014-01-17spi: Remove duplicate code to set default bits_per_word settingAxel Lin1-6/+0
The implementation in spi_setup() already set spi->bits_per_word = 8 when spi->bits_per_word is 0 before calling spi->master->setup. So we don't need to do it again in setup() callback. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Marek Vasut <marex@denx.de> Acked-by: Barry Song <Baohua.Song@csr.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-12-03spi: remove DEFINE_PCI_DEVICE_TABLE macroJingoo Han1-1/+1
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: Mark Brown <broonie@linaro.org>
2013-10-25Merge remote-tracking branch 'spi/topic/topcliff' into spi-nextMark Brown1-2/+2
2013-10-16spi: Don't break user-visible strings to multiple source lines in driversJarkko Nikula1-6/+7
User-visible strings are more difficult to grep from sources if they are separated to multiple source lines. This is worse than over 80 columns long line code style violation. Fix this by making those to single-line strings or by breaking them between variables. While at there, convert if (printk_ratelimit()) dev_warn() to use dev_warn_ratelimited in spi-pxa2xx.c. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-24spi: spi-topcliff-pch: fix a pci_iomap() checkDan Carpenter1-2/+2
If pci_iomap() returns NULL, adding "PCH_ADDRESS_SIZE * plat_dev->id" can make it non-NULL which breaks the error handling. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-08-13spi-topcliff-pch: Add MODULE_DEVICE_TABLEAlexander Stein1-0/+2
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-06-26Merge remote-tracking branch 'spi/topic/topcliff' into spi-nextMark Brown1-4/+4
2013-06-26Merge remote-tracking branch 'spi/topic/bpw' into spi-nextMark Brown1-16/+1
2013-06-04spi: spi-topcliff-pch: Fix sparse warningsSachin Kamat1-4/+4
Fixes the following type of warnings: drivers/spi/spi-topcliff-pch.c:370:52: warning: Using plain integer as NULL pointer Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-05-29spi: convert drivers to use bits_per_word_maskStephen Warren1-16/+1
Fill in the recently added spi_master.bits_per_word_mask field in as many drivers as possible. Make related cleanups, such as removing any redundant error-checking, or empty setup callbacks. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-05-22spi: topcliff-pch: fix error return code in pch_spi_probe()Wei Yongjun1-0/+1
Fix to return -ENOMEM in the platform_device_alloc() error handling case instead of 0, as done elsewhere in this function. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-05-20spi: topcliff-pch: Pass correct pointer to free_irq()Lars-Peter Clausen1-1/+1
free_irq() expects the same pointer that was passed to request_irq(), otherwise the IRQ is not freed. The issue was found using the following coccinelle script: <smpl> @r1@ type T; T devid; @@ request_irq(..., devid) @r2@ type r1.T; T devid; position p; @@ free_irq@p(..., devid) @@ position p != r2.p; @@ *free_irq@p(...) </smpl> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-28spi-topcliff-pch: fix to use list_for_each_entry_safe() when delete list itemsWei Yongjun1-6/+6
Since we will remove items off the list using list_del_init() we need to use a safe version of the list_for_each_entry() macro aptly named list_for_each_entry_safe(). Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Mark Brown <broonie@sirena.org.uk>
2013-04-25spi-topcliff-pch: missing platform_driver_unregister() on error in ↵Wei Yongjun1-1/+3
pch_spi_init() Add the missing platform_driver_unregister() before return from pch_spi_init() in the error handling case. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-12-07spi: Remove HOTPLUG section attributesGrant Likely1-6/+6
CONFIG_HOTPLUG is going away as an option. As result the __dev* markings will be going away. Remove use of __devinit, __devexit_p, __devinitdata, __devinitconst, and __devexit. Bill Pemberton has done most of the legwork on this series. I've used his script to purge the attributes from the drivers/gpio tree. Reported-by: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-10-03Merge tag 'spi-3.7' of ↵Linus Torvalds1-2/+0
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc Pull spi updates from Mark Brown: "No framework work here, only a bunch of driver updates of varying sizes: - Factoring out of the core hardware support from the MXS MMC driver by Marek Vasut to allow the hardware to also be used for SPI. - Lots of error handling cleanups from Guenter Roeck - Removal of the existing Tegra driver which is quite comprehensively broken as detailed in the changelog for the removal. - DT suppport for the PL022 and GPIO drivers. - pinctrl support for OMAP and PL022." Pulling from Mark Brown as Grant Likely is still busy moving. * tag 'spi-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc: (53 commits) spi: remove completely broken Tegra driver spi/imx: set the inactive state of the clock according to the clock polarity spi/pl022: get/put resources on suspend/resume spi/pl022: use more managed resources spi/pl022: Devicetree support w/o platform data spi/s3c64xx: Don't free controller_data on non-dt platforms spi: omap2-mcspi: add pinctrl support spi/pl022: adopt pinctrl support spi: omap2-mcspi: Cleanup the omap2_mcspi_txrx_dma function spi/gpio: Fix stub for spi_gpio_probe_dt() spi/mxs: Make the SPI block clock speed configurable via DT spi: spi-sh-hspi: drop frees of devm_ alloc'd data spi/pl022: Fix chipselects pointer computation spi: spi-tle62x0: Use module_spi_driver macro mxs/spi: Rework the mxs_ssp_timeout to be more readable mxs/spi: Decrement the DMA/PIO border mxs/spi: Increment the transfer length only if transfer succeeded mxs/spi: Fix issues when doing long continuous transfer spi: spi-gpio: Add DT bindings spi: spi-gpio: store chipselect information in private structure ...
2012-09-01spi: fix comment/printk typos in spiMasanari Iida1-1/+1
Correct spelling typo in drivers/spi Signed-off-by: Masanari Iida <standby24x7@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-08-27spi/topcliff-pch: Fix device remove functionGuenter Roeck1-2/+0
The call sequence spi_alloc_master/spi_register_master/spi_unregister_master is complete; it reduces the device reference count to zero, which results in device memory being freed. An extra call to spi_master_put is unnecessary and results in an access to free memory. Drop it. Also, the device subsystem resets device driver data to NULL after the call to the remove function returns, so there is no need to do it here. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-20spi: By default setup spi_masters with 1 chipselect and dynamics bus numberGrant Likely1-1/+0
Trivial simplification. Instead of requiring spi master drivers to always set the bus number (even when a dynamic number is desired), this patch modifies spi_alloc_master() to initialize num_chipselect to 1 (because there will always be at least one CS) and bus_num to -1 for dynamic allocation. This simplifies the code needed to be written for drivers. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-05-20spi/topcliff: use correct __devexit_p annotationArnd Bergmann1-1/+1
__devexit functions are discarded when CONFIG_HOTPLUG is not set, so the symbol needs to be referenced carefully. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-30Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds1-2/+2
Pull slave-dmaengine update from Vinod Koul: "This includes the cookie cleanup by Russell, the addition of context parameter for dmaengine APIs, more arm dmaengine driver cleanup by moving code to dmaengine, this time for imx by Javier and pl330 by Boojin along with the usual driver fixes." Fix up some fairly trivial conflicts with various other cleanups. * 'next' of git://git.infradead.org/users/vkoul/slave-dma: (67 commits) dmaengine: imx: fix the build failure on x86_64 dmaengine: i.MX: Fix merge of cookie branch. dmaengine: i.MX: Add support for interleaved transfers. dmaengine: imx-dma: use 'dev_dbg' and 'dev_warn' for messages. dmaengine: imx-dma: remove 'imx_dmav1_baseaddr' and 'dma_clk'. dmaengine: imx-dma: remove unused arg of imxdma_sg_next. dmaengine: imx-dma: remove internal structure. dmaengine: imx-dma: remove 'resbytes' field of 'internal' structure. dmaengine: imx-dma: remove 'in_use' field of 'internal' structure. dmaengine: imx-dma: remove sg member from internal structure. dmaengine: imx-dma: remove 'imxdma_setup_sg_hw' function. dmaengine: imx-dma: remove 'imxdma_config_channel_hw' function. dmaengine: imx-dma: remove 'imxdma_setup_mem2mem_hw' function. dmaengine: imx-dma: remove dma_mode member of internal structure. dmaengine: imx-dma: remove data member from internal structure. dmaengine: imx-dma: merge old dma-v1.c with imx-dma.c dmaengine: at_hdmac: add slave config operation dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic dmaengine/dma_slave: introduce inline wrappers dma: imx-sdma: Treat firmware messages as warnings instead of erros ...
2012-03-21Merge tag 'spi-for-linus' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds1-29/+84
Pull SPI changes for v3.4 from Grant Likely: "Mostly a bunch of new drivers and driver bug fixes; but this also includes a few patches that create a core message queue infrastructure for the spi subsystem instead of making each driver open code it." * tag 'spi-for-linus' of git://git.secretlab.ca/git/linux-2.6: (34 commits) spi/fsl-espi: Make sure pm is within 2..32 spi/fsl-espi: make the clock computation easier to read spi: sh-hspi: modify write/read method spi: sh-hspi: control spi clock more correctly spi: sh-hspi: convert to using core message queue spi: s3c64xx: Fix build spi: s3c64xx: remove unnecessary callback msg->complete spi: remove redundant variable assignment spi: release lock on error path in spi_pump_messages() spi: Compatibility with direction which is used in samsung DMA operation spi-topcliff-pch: add recovery processing in case wait-event timeout spi-topcliff-pch: supports a spi mode setup and bit order setup by IO control spi-topcliff-pch: Fix issue for transmitting over 4KByte spi-topcliff-pch: Modify pci-bus number dynamically to get DMA device info spi/imx: simplify error handling to free gpios spi: Convert to DEFINE_PCI_DEVICE_TABLE spi: add Broadcom BCM63xx SPI controller driver SPI: add CSR SiRFprimaII SPI controller driver spi-topcliff-pch: fix -Wuninitialized warning spi: Mark spi_register_board_info() __devinit ...
2012-03-21dmaengine/dma_slave: introduce inline wrappersAlexandre Bounine1-2/+2
Add inline wrappers for device_prep_slave_sg() and device_prep_dma_cyclic() interfaces to hide new parameter from current users of affected interfaces. Convert current users to use new wrappers instead of direct calls. Suggested by Russell King [https://lkml.org/lkml/2012/2/3/269]. Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-03-10spi-topcliff-pch: add recovery processing in case wait-event timeoutTomoya MORINAGA1-1/+9
Currently, pch_spi_start_transfer failure is not anticipated. This patch adds the processing. Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-10spi-topcliff-pch: supports a spi mode setup and bit order setup by IO controlTomoya MORINAGA1-0/+1
This patch supports a spi mode setup and bit order setup by IO control. spi mode: mode 0 to mode 3 bit order: LSB first, MSB first Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-10spi-topcliff-pch: Fix issue for transmitting over 4KByteTomoya MORINAGA1-11/+55
Currently, when spi-topcliff-pch receives transmit request over 4KByte, this driver can't process correctly. This driver needs to divide the data into 4Kbyte unit. This patch fixes the issue. Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-10spi-topcliff-pch: Modify pci-bus number dynamically to get DMA device infoTomoya MORINAGA1-1/+2
Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-10spi: Convert to DEFINE_PCI_DEVICE_TABLEAxel Lin1-1/+1
Convert static struct pci_device_id *[] to static DEFINE_PCI_DEVICE_TABLE tables. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-10spi-topcliff-pch: fix -Wuninitialized warningDanny Kukawka1-16/+17
Fix for: drivers/spi/spi-topcliff-pch.c: In function ‘pch_spi_handler_sub’: drivers/spi/spi-topcliff-pch.c:325:17: warning: ‘bpw_len’ may be used uninitialized in this function [-Wuninitialized] drivers/spi/spi-topcliff-pch.c:325:42: warning: ‘rx_index’ may be used uninitialized in this function [-Wuninitialized] drivers/spi/spi-topcliff-pch.c:325:42: warning: ‘tx_index’ may be used uninitialized in this function [-Wuninitialized] Move usage of tx_index, rx_index and bpw_len into the same block as where they are set to prevent uninitialized usage. v2: instead of init variables with 0 move the whole block Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-02-06spi-topcliff-pch: rename pch_spi_pcidev to pch_spi_pcidev_driverDanny Kukawka1-3/+3
Rename static struct pci_driver pch_spi_pcidev to pch_spi_pcidev_driver to get rid of warnings from modpost checks. Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-01-18Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds1-2/+2
* 'next' of git://git.infradead.org/users/vkoul/slave-dma: (53 commits) ARM: mach-shmobile: specify CHCLR registers on SH7372 dma: shdma: fix runtime PM: clear channel buffers on reset dma/imx-sdma: save irq flags when use spin_lock in sdma_tx_submit dmaengine/ste_dma40: clear LNK on channel startup dmaengine: intel_mid_dma: remove legacy pm interface ASoC: mxs: correct 'direction' of device_prep_dma_cyclic dmaengine: intel_mid_dma: error path fix dmaengine: intel_mid_dma: locking and freeing fixes mtd: gpmi-nand: move to dma_transfer_direction mtd: fix compile error for gpmi-nand mmc: mxs-mmc: fix the dma_transfer_direction migration dmaengine: add DMA_TRANS_NONE to dma_transfer_direction dma: mxs-dma: Don't use CLKGATE bits in CTRL0 to disable DMA channels dma: mxs-dma: make mxs_dma_prep_slave_sg() multi user safe dma: mxs-dma: Always leave mxs_dma_init() with the clock disabled. dma: mxs-dma: fix a typo in comment DMA: PL330: Remove pm_runtime_xxx calls from pl330 probe/remove video i.MX IPU: Fix display connections i.MX IPU DMA: Fix wrong burstsize settings dmaengine/ste_dma40: allow fixed physical channel ... Fix up conflicts in drivers/dma/{Kconfig,mxs-dma.c,pl330.c} The conflicts looked pretty trivial, but I'll ask people to verify them.
2011-11-17Merge branch 'dma_slave_direction' into next_test_dirnVinod Koul1-2/+2
resolved conflicts: drivers/media/video/mx3_camera.c
2011-10-31spi, serial: move to dma_transfer_directionVinod Koul1-2/+2
fixup usage of dma direction by introducing dma_transfer_direction, this patch moves spi, serial drivers to use new enum Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Alan Cox <alan@linux.intel.com> Acked-by: Mika Westerberg <mika.westerberg@iki.fi>
2011-10-29spi-topcliff-pch: Change company name OKI SEMICONDUCTOR to LAPIS SemiconductorTomoya MORINAGA1-6/+6
On October 1 in 2011, OKI SEMICONDUCTOR Co., Ltd. changed the company name in to LAPIS Semiconductor Co., Ltd. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-29spi-topcliff-pch: Support new device LAPIS Semiconductor ML7831 IOHTomoya MORINAGA1-1/+4
ML7831 is companion chip for Intel Atom E6xx series. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-04spi-topcliff-pch: Fix overrun issueTomoya MORINAGA1-5/+23
We found that adding load, Rx data sometimes drops.(with DMA transfer mode) The cause is that before starting Rx-DMA processing, Tx-DMA processing starts. This causes FIFO overrun occurs. This patch fixes the issue by modifying FIFO tx-threshold and DMA descriptor size like below. Current this patch Rx-descriptor 4Byte+12Byte*341 --> 12Byte*340-4Byte-12Byte Rx-threshold (Not modified) Tx-descriptor 4Byte+12Byte*341 --> 16Byte-12Byte*340 Rx-threshold 12Byte --> 2Byte Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-04spi-topcliff-pch: Add recovery processing in case FIFO overrun error occursTomoya MORINAGA1-7/+24
Add recovery processing in case FIFO overrun error occurs with DMA transfer mode. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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