- 07 Apr, 2013 10 commits
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Stephen Warren authored
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:
Stephen Warren <swarren@nvidia.com> Signed-off-by:
Grant Likely <grant.likely@secretlab.ca>
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Stephen Warren authored
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:
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Stephen Warren authored
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:
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Andreas Larsson authored
This relies upon of_spi_register_master to find out which gpios to use. Acked-by:
Anton Vorontsov <anton@enomsg.org> Signed-off-by:
Andreas Larsson <andreas@gaisler.com> Signed-off-by:
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Andreas Larsson authored
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:
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Andreas Larsson authored
Acked-by:
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Andreas Larsson authored
For being able to distinguishing between the regular type of cores and others with different entries in of_fsl_spi_match. Acked-by:
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Andreas Larsson authored
spi/spi-fsl-spi: Move setting non-zero tx and rx shifts to a function accessed by a function pointer Acked-by:
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Andreas Larsson authored
This is needed for a device in SPI_CS_HIGH mode that otherwise could start out active for the first transaction. Acked-by:
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Andreas Larsson authored
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:
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- 03 Apr, 2013 2 commits
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Wei Yongjun authored
Fix to return a negative error code from the error handling case instead of 0, as returned elsewhere in this function. Signed-off-by:
Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by:
Mark Brown <broonie@opensource.wolfsonmicro.com>
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Mark Brown authored
This reverts commit faa98f7e which was applied in error due to discussion ending up in the wrong thread.
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- 01 Apr, 2013 19 commits
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Jingoo Han authored
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:
Jingoo Han <jg1.han@samsung.com> Signed-off-by:
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Mark Brown authored
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Nicolas Ferre authored
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:
Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by:
Wenyou Yang <wenyou.yang@atmel.com> Signed-off-by:
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Nicolas Ferre authored
Signed-off-by:
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Wenyou Yang authored
Signed-off-by:
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Wenyou Yang authored
The "has_dma_support" needed for future use with dmaengine driver. [Fixed some unneded ternery operators -- broonie] Signed-off-by:
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Laxman Dewangan authored
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:
Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by:
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Alexandru Gheorghiu authored
Replaced calls to IS_ERR and PTR_ERR with PTR_RET function. Patch found using coccinelle. Signed-off-by:
Alexandru Gheorghiu <gheorghiuandru@gmail.com> Signed-off-by:
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Alexandru Gheorghiu authored
Replaced calls to IS_ERR and PTR_ERR with PTR_RET function. Patch found using coccinelle. Signed-off-by:
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Anatolij Gustschin authored
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:
Gerhard Sittig <gerhard.sittig@ifm.com> Signed-off-by:
Anatolij Gustschin <agust@denx.de> Signed-off-by:
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Wei Yongjun authored
The variable bits_per_word is initialized but never used otherwise, so remove the unused variable. Signed-off-by:
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Sachin Kamat authored
This eliminates having an #ifdef returning NULL for the case when OF is disabled. Signed-off-by:
Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by:
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Sachin Kamat authored
This eliminates having an #ifdef returning NULL for the case when OF is disabled. Signed-off-by:
Thomas Chou <thomas@wytron.com.tw> Signed-off-by:
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Bryan Freed authored
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:
Bryan Freed <bfreed@chromium.org> Reviewed-by:
Doug Anderson <dianders@chromium.org> Signed-off-by:
Linus Walleij <linus.walleij@linaro.org> Signed-off-by:
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Sebastian Andrzej Siewior authored
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:
Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by:
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Mark Brown authored
The core can do the validation for us. Signed-off-by: -
Stephen Warren authored
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:
Stephen Warren <swarren@wwwdotorg.org> Signed-off-by:
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Stephen Warren authored
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:
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Girish K S authored
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:
Girish K S <ks.giri@samsung.com> Signed-off-by:
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- 26 Mar, 2013 1 commit
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Matthias Brugger authored
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:
Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by:
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- 12 Mar, 2013 8 commits
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Jonas Gorski authored
Use devm_ioremap_resource() which provides its own error messages. Signed-off-by:
Jonas Gorski <jogo@openwrt.org> Acked-by:
Florian Fainelli <florian@openwrt.org> Signed-off-by:
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Jonas Gorski authored
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:
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Jonas Gorski authored
It only does one check, so just do the check directly in the caller. Signed-off-by:
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Jonas Gorski authored
The check would belong in bcm63xx_spi_setup if the spi subsystem weren't already doing the check for us, so just drop it. Signed-off-by:
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Jonas Gorski authored
bcm63xx_spi_check_transfer is only called from one place that has t always set, so directly check the transfer's bits_per_word. Signed-off-by:
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Jonas Gorski authored
Instead of fixing up the bits_per_word (which the spi subsystem already does for us), check it for supported values. Signed-off-by:
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Jonas Gorski authored
It is only written, but never read. Signed-off-by:
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Jonas Gorski authored
The spi subsystem already provides this info in a more extensive debug print except for the nsecs/bit - which wasn't calculated anyway and fixed to 0. Signed-off-by:
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