- 10 4月, 2013 1 次提交
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由 Anatolij Gustschin 提交于
Currently the driver only uses one internal chip select. Add support for gpio chip selects configured by cs-gpios DT binding. Signed-off-by: NAnatolij Gustschin <agust@denx.de> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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- 08 4月, 2013 3 次提交
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由 Jonas Gorski 提交于
speed_hz is a write only member, so we can safely remove it and its generation. Also fixes the missing clk_put after getting the periph clock. Signed-off-by: NJonas Gorski <jogo@openwrt.org> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Wei Yongjun 提交于
Neither tegra20_spi_cdata nor tegra30_spi_cdata are used outside this file so they can, and should, be static. Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn> Reviewed-by: NThierry Reding <thierry.reding@avionic-design.de> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Sachin Kamat 提交于
Use the newly introduced devm_ioremap_resource() instead of devm_request_and_ioremap() which provides more consistent error handling. devm_ioremap_resource() provides its own error messages; so all explicit error messages can be removed from the failure code paths. Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org> Acked-by: NEric Miao <eric.y.miao@gmail.com> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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- 07 4月, 2013 12 次提交
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由 Laxman Dewangan 提交于
Add SPI driver for NVIDIA's Tegra114 SPI controller. This controller is different than the older SoCs SPI controller in internal design as well as register interface. This driver supports the: - non DMA based transfer for smaller transfer i.e. less than FIFO depth. - APB DMA based transfer for larger transfer i.e. more than FIFO depth. - Clock gating through runtime PM callbacks. - registration through DT only. Signed-off-by: NLaxman Dewangan <ldewangan@nvidia.com> Reviewed-by: NStephen Warren <swarren@nvidia.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Stephen Warren 提交于
The platform data header is no longer used. Delete it. Signed-off-by: NStephen Warren <swarren@nvidia.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Stephen Warren 提交于
Tegra only supports, and always enables, device tree. Remove all ifdefs and runtime checks for DT support from the driver. Platform data is therefore no longer required. Rework the driver to parse the device tree directly into struct tegra_slink_data. Signed-off-by: NStephen Warren <swarren@nvidia.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Stephen Warren 提交于
Tegra only supports, and always enables, device tree. Remove all ifdefs and runtime checks for DT support from the driver. Platform data is therefore no longer required. Rework the driver to parse the device tree directly into struct tegra_sflash_data. Signed-off-by: NStephen Warren <swarren@nvidia.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Stephen Warren 提交于
There is no code to set spi->controller_data, and hence the HW CS logic can never trigger. Remove the unused code. Signed-off-by: NStephen Warren <swarren@nvidia.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Andreas Larsson 提交于
This relies upon of_spi_register_master to find out which gpios to use. Acked-by: NAnton Vorontsov <anton@enomsg.org> Signed-off-by: NAndreas Larsson <andreas@gaisler.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Andreas Larsson 提交于
This adds support for the mostly register-compatible SPICTRL cores from the GRLIB VHDL IP core library from Aeroflex Gaisler. They are normally running on SPARC. A different entry in of_fsl_spi_match matches this core and indicates a different hardware type that is used to set up different function pointers and special cases. The GRLIB core operates in cpu mode. The number of bits per word might be limited. There might be native chipselects selected via a slave select register. These differences to the FSL type cores, if present, are indicated by a capabilities register. Other register and function differences exists but are not relevant to the driver. Acked-by: NAnton Vorontsov <anton@enomsg.org> Signed-off-by: NAndreas Larsson <andreas@gaisler.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Andreas Larsson 提交于
Acked-by: NAnton Vorontsov <anton@enomsg.org> Signed-off-by: NAndreas Larsson <andreas@gaisler.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Andreas Larsson 提交于
For being able to distinguishing between the regular type of cores and others with different entries in of_fsl_spi_match. Acked-by: NAnton Vorontsov <anton@enomsg.org> Signed-off-by: NAndreas Larsson <andreas@gaisler.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Andreas Larsson 提交于
spi/spi-fsl-spi: Move setting non-zero tx and rx shifts to a function accessed by a function pointer Acked-by: NAnton Vorontsov <anton@enomsg.org> Signed-off-by: NAndreas Larsson <andreas@gaisler.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Andreas Larsson 提交于
This is needed for a device in SPI_CS_HIGH mode that otherwise could start out active for the first transaction. Acked-by: NAnton Vorontsov <anton@enomsg.org> Signed-off-by: NAndreas Larsson <andreas@gaisler.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Andreas Larsson 提交于
This makes the spi-fsl-spi driver usable in CPU mode outside of an FSL_SOC and even an powerpc environment by moving CPM mode functionality to a separate file that is only compiled and linked in an FSL_SOC environment and adding some ifdefs to hide types and functions or provide alternatives. For devicetree probing a "clock-frequency" property is used for clock frequency instead of calls to FSL_SOC-specific functions. Acked-by: NAnton Vorontsov <anton@enomsg.org> Signed-off-by: NAndreas Larsson <andreas@gaisler.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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- 04 4月, 2013 2 次提交
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由 Wei Yongjun 提交于
Fix to return a negative error code from the error handling case instead of 0, as returned elsewhere in this function. Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Mark Brown 提交于
This reverts commit faa98f7e which was applied in error due to discussion ending up in the wrong thread.
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- 01 4月, 2013 19 次提交
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由 Jingoo Han 提交于
Add CONFIG_PM_SLEEP to suspend/resume functions to fix the following build warning when CONFIG_PM_SLEEP is not selected. This is because sleep PM callbacks defined by SET_SYSTEM_SLEEP_PM_OPS are only used when the CONFIG_PM_SLEEP is enabled. drivers/spi/spi-s3c64xx.c:1362:12: warning: 's3c64xx_spi_suspend' defined but not used [-Wunused-function] drivers/spi/spi-s3c64xx.c:1381:12: warning: 's3c64xx_spi_resume' defined but not used [-Wunused-function] Signed-off-by: NJingoo Han <jg1.han@samsung.com> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Mark Brown 提交于
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由 Nicolas Ferre 提交于
The status of transfer is stored in controller data structure so that it can be used not only by atmel_spi_msg_done() function. This will be useful for upcoming dmaengine enabled driver. Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: NWenyou Yang <wenyou.yang@atmel.com> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Nicolas Ferre 提交于
Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: NWenyou Yang <wenyou.yang@atmel.com> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Wenyou Yang 提交于
Signed-off-by: NWenyou Yang <wenyou.yang@atmel.com> Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Wenyou Yang 提交于
The "has_dma_support" needed for future use with dmaengine driver. [Fixed some unneded ternery operators -- broonie] Signed-off-by: NWenyou Yang <wenyou.yang@atmel.com> Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Laxman Dewangan 提交于
Spi starts transfer using dma with DMA_CTRL_ACK which is not require becasue spi driver does not use completed dma_desc after transfer done and so it does not ack the dma descriptor. Removing the DMA_CTRL_ACK flag to avoid memory leak in dma driver. Signed-off-by: NLaxman Dewangan <ldewangan@nvidia.com> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Alexandru Gheorghiu 提交于
Replaced calls to IS_ERR and PTR_ERR with PTR_RET function. Patch found using coccinelle. Signed-off-by: NAlexandru Gheorghiu <gheorghiuandru@gmail.com> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Alexandru Gheorghiu 提交于
Replaced calls to IS_ERR and PTR_ERR with PTR_RET function. Patch found using coccinelle. Signed-off-by: NAlexandru Gheorghiu <gheorghiuandru@gmail.com> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Anatolij Gustschin 提交于
Some SPI slave devices require asserted chip select signal across multiple transfer segments of an SPI message. Currently the driver always de-asserts the internal SS signal for every single transfer segment of the message and ignores the 'cs_change' flag of the transfer description. Disable the internal chip select (SS) only if this is needed and indicated by the 'cs_change' flag. Without this change, each partial transfer of a surrounding multi-part SPI transaction might erroneously change the SS signal, which might prevent slaves from answering the request that was sent in a previous transfer segment because the transaction could be considered aborted (SS was de-asserted before reading the response). Reported-by: NGerhard Sittig <gerhard.sittig@ifm.com> Signed-off-by: NAnatolij Gustschin <agust@denx.de> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com> Cc: stable@vger.kernel.org
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由 Wei Yongjun 提交于
The variable bits_per_word is initialized but never used otherwise, so remove the unused variable. Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-By: NLaxman Dewangan <ldewangan@nvidia.com> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Sachin Kamat 提交于
This eliminates having an #ifdef returning NULL for the case when OF is disabled. Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Sachin Kamat 提交于
This eliminates having an #ifdef returning NULL for the case when OF is disabled. Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org> Acked-by: NThomas Chou <thomas@wytron.com.tw> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Bryan Freed 提交于
spi_pump_messages() calls into a controller driver with unprepare_transfer_hardware() which is documented as "This may sleep". As in the prepare_transfer_hardware() call below, we should release the queue_lock spinlock before making the call. Rework the logic a bit to hold queue_lock to protect the 'busy' flag, then release it to call unprepare_transfer_hardware(). Signed-off-by: NBryan Freed <bfreed@chromium.org> Reviewed-by: NDoug Anderson <dianders@chromium.org> Signed-off-by: NDoug Anderson <dianders@chromium.org> Acked-by: NLinus Walleij <linus.walleij@linaro.org> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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It is possible that the handler gets interrupted after checking the status. After it resumes the time out is due but the condition it was waiting for might be true as well. Therefore it is necessary to check the condition in case of an time out to be sure that the condition is not true after the time passed by. Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Mark Brown 提交于
The core can do the validation for us. Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Stephen Warren 提交于
This driver only supports bits_per_word==8, so inform the SPI core of this. Remove all the open-coded validation that's no longer needed. Signed-off-by: NStephen Warren <swarren@wwwdotorg.org> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Stephen Warren 提交于
Allow SPI masters to define the set of bits_per_word values they support. If they do this, then the SPI core will reject transfers that attempt to use an unsupported bits_per_word value. This eliminates the need for each SPI driver to implement this checking in most cases. Signed-off-by: NStephen Warren <swarren@wwwdotorg.org> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Girish K S 提交于
The status of the interrupt is available in the status register, so reading the clear pending register and writing back the same value will not actually clear the pending interrupts. This patch modifies the interrupt handler to read the status register and clear the corresponding pending bit in the clear pending register. Modified the hwInit function to clear all the pending interrupts. Signed-off-by: NGirish K S <ks.giri@samsung.com> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com> Cc: stable@vger.kernel.org
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- 26 3月, 2013 1 次提交
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由 Matthias Brugger 提交于
The pointer to the driver data is never used to get the slave controller data. We can delete the unused argument from the function. Signed-off-by: NMatthias Brugger <matthias.bgg@gmail.com> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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- 13 3月, 2013 2 次提交
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由 Jonas Gorski 提交于
Use devm_ioremap_resource() which provides its own error messages. Signed-off-by: NJonas Gorski <jogo@openwrt.org> Acked-by: NFlorian Fainelli <florian@openwrt.org> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Jonas Gorski 提交于
bcm63xx_spi_setup_transfer is called from only one place, and that has t always set, to hz will always be t->speed_hz - just use it directly in the two places instead of moving it in a local variable. Signed-off-by: NJonas Gorski <jogo@openwrt.org> Acked-by: NFlorian Fainelli <florian@openwrt.org> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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