#
a9c8f68c |
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23-Nov-2021 |
Andy Shevchenko <andriy.shevchenko@linux.intel.com> |
spi: pxa2xx: Get rid of unused ->cs_control() Since the last user of the custom ->cs_control() gone, we may get rid of this legacy API completely. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20211123192723.44537-2-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
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#
44ec41b7 |
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22-Nov-2021 |
Andy Shevchenko <andriy.shevchenko@linux.intel.com> |
spi: pxa2xx: Remove redundant ->read() and ->write() in struct chip_data Since the commit 196b0e2cf237 ("spi: pxa2xx: Remove if statement that is always true in pump_transfers()") the ->read() and ->write() methods in the struct driver_data are reconfigured for each transfer. Hence no need to keep the intermediate state in the struct chip_data. The same applies to n_bytes member of the same data structure. Get rid of unneeded storage for good. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20211122200622.43305-1-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
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#
8083d6b8 |
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17-May-2021 |
Andy Shevchenko <andriy.shevchenko@linux.intel.com> |
spi: pxa2xx: Fix style of and typos in the comments and messages Fix style of the comments and messages along with typos in them. While at it, update Intel Copyright year. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20210517140351.901-8-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
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#
ccd60b20 |
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17-May-2021 |
Andy Shevchenko <andriy.shevchenko@linux.intel.com> |
spi: pxa2xx: Drop duplicate chip_select in struct chip_data The struct chip_data had been introduced in order to keep the parameters that may be provided on stack during device allocation. There is no need to duplicate parameters there, which are carried on by SPI device itself. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20210517140351.901-5-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
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#
de6926f3 |
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17-May-2021 |
Andy Shevchenko <andriy.shevchenko@linux.intel.com> |
spi: pxa2xx: Switch to use SPI core GPIO (legacy) CS handling SPI core has been already providing the GPIO CS handling. Use it. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20210517140351.901-4-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
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#
778c12e6 |
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17-May-2021 |
Andy Shevchenko <andriy.shevchenko@linux.intel.com> |
spi: pxa2xx: Switch to use SPI core GPIO (descriptor) CS handling SPI core has been already providing the GPIO CS handling. Use it. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20210517140351.901-3-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
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#
eca32c39 |
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10-May-2021 |
Andy Shevchenko <andriy.shevchenko@linux.intel.com> |
spi: pxa2xx: Constify struct driver_data parameter In a couple of functions the contents of struct driver_data are not altered, hence we may constify the respective function parameter. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20210510124134.24638-14-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
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#
6d380132 |
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10-May-2021 |
Andy Shevchenko <andriy.shevchenko@linux.intel.com> |
spi: pxa2xx: Extract read_SSSR_bits() helper There are few places that repeat the logic of "read some bits from SSSR". Extract read_SSSR_bits() helper to deduplicate that. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20210510124134.24638-13-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
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#
42c80cd4 |
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10-May-2021 |
Andy Shevchenko <andriy.shevchenko@linux.intel.com> |
spi: pxa2xx: Extract clear_SSCR1_bits() helper There are few places that repeat the logic of "clear some bits in SSCR1". Extract clear_SSCR1_bits() helper to deduplicate that. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20210510124134.24638-12-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
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#
0e476871 |
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23-Apr-2021 |
Andy Shevchenko <andriy.shevchenko@linux.intel.com> |
spi: pxa2xx: Replace header inclusions by forward declarations When the data structure is only referred by pointer, compiler may not need to see the contents of the data type. Thus, we may replace header inclusions by respective forward declarations. Due to above add missed headers as well. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20210423182441.50272-5-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
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#
c3dce24c |
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23-Apr-2021 |
Andy Shevchenko <andriy.shevchenko@linux.intel.com> |
spi: pxa2xx: Utilize struct device from struct ssp_device We have a duplication of struct device in the struct driver_data, get rid of it and reuse member from struct ssp_device instead. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20210423182441.50272-4-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
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#
9e43c9a8 |
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23-Apr-2021 |
Andy Shevchenko <andriy.shevchenko@linux.intel.com> |
spi: pxa2xx: Utilize MMIO and physical base from struct ssp_device We have a duplication of MMIO and physical base addresses in the struct driver_data, get rid of it and reuse members from struct ssp_device instead. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20210423182441.50272-3-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
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#
d2912cb1 |
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04-Jun-2019 |
Thomas Gleixner <tglx@linutronix.de> |
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
51eea52d |
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16-Jan-2019 |
Lubomir Rintel <lkundrak@v3.sk> |
pxa2xx: replace spi_master with spi_controller It's also a slave controller driver now, calling it "master" is slightly misleading. Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
77d33897 |
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13-Nov-2018 |
Lubomir Rintel <lkundrak@v3.sk> |
spi: pxa2xx: Add ready signal Strobe a GPIO line when the slave TX FIFO is filled. This is how the Embedded Controller on an OLPC XO-1.75 machine, that happens to be a SPI master, learns that it can initiate a transaction. Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Tested-by: Pavel Machek <pavel@ucw.cz> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
efc4a137 |
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19-Apr-2018 |
Andy Shevchenko <andriy.shevchenko@linux.intel.com> |
spi: pxa2xx: Allow 64-bit DMA Currently the 32-bit device address only is supported for DMA. However, starting from Intel Sunrisepoint PCH the DMA address of the device FIFO can be 64-bit. Change the respective variable to be compatible with DMA engine expectations, i.e. to phys_addr_t. Fixes: 34cadd9c1bcb ("spi: pxa2xx: Add support for Intel Sunrisepoint") Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
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#
7956fadd |
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19-Apr-2018 |
Andy Shevchenko <andriy.shevchenko@linux.intel.com> |
spi: pxa2xx: Allow 64-bit DMA Currently the 32-bit device address only is supported for DMA. However, starting from Intel Sunrisepoint PCH the DMA address of the device FIFO can be 64-bit. Change the respective variable to be compatible with DMA engine expectations, i.e. to phys_addr_t. Fixes: 34cadd9c1bcb ("spi: pxa2xx: Add support for Intel Sunrisepoint") Cc: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
d5898e19 |
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17-Apr-2018 |
Jarkko Nikula <jarkko.nikula@linux.intel.com> |
spi: pxa2xx: Use core message processing loop Convert the pump_transfers() transfer tasklet to transfer_one() hook the SPI core calls to process single transfer instead of handling message processing and chip select handling in the driver. This not only simplifies the driver but also brings transfer statistics from the core. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
1f99f893 |
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17-Apr-2018 |
Jarkko Nikula <jarkko.nikula@linux.intel.com> |
spi: pxa2xx: Remove unused argument from pxa2xx_spi_dma_prepare() Current DMA engine implementation of pxa2xx_spi_dma_prepare() don't use the dma_burst argument. Remove it since it became unused after commit 6356437e65c2 ("spi: spi-pxa2xx: remove legacy PXA DMA bits"). Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
3cc7b0e3 |
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01-Feb-2018 |
Jarkko Nikula <jarkko.nikula@linux.intel.com> |
spi: pxa2xx: Convert to generalized SPI controller API Convert to generalized SPI controller API introduced by the commit 8caab75fd2c2 ("spi: Generalize SPI "master" to "controller""). Inside driver variable name "master" is still used to indicate the driver is master only. While at it, change "unsigned cs" to "unsigned int cs" in pxa2xx_spi_fw_translate_cs() to suppress checkpatch warning. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
c18d925f |
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03-Aug-2017 |
Jan Kiszka <jan.kiszka@siemens.com> |
spi: pxa2xx: Convert to GPIO descriptor API where possible We still need to request/free GPIOs passed via the legacy path of pxa2xx_spi_chip::gpio_cs, but we can use the gpiod API otherwise. Consistently use the descriptor API instead of the legacy one. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
6906b0ec |
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14-Nov-2016 |
Jarkko Nikula <jarkko.nikula@linux.intel.com> |
spi: spi-pxa2xx: Remove unused macro IS_DMA_ALIGNED() became unused by the commit 6356437e65c2 ("spi: spi-pxa2xx: remove legacy PXA DMA bits"). Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
99f499cd |
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26-Sep-2016 |
Mika Westerberg <mika.westerberg@linux.intel.com> |
spi: pxa2xx: Add support for GPIO descriptor chip selects The driver uses custom chip_info coming from platform data for chip selects implemented as GPIOs. If the system lacks board files setting up the platform data, it is not possible to use GPIOs as chip selects. This adds support for GPIO descriptors so that regardless of the underlying firmware interface (DT, ACPI or platform data) the driver can request GPIOs used as chip selects and configure them accordingly. The custom chip_info GPIO support is still left there to make sure the existing systems keep working as expected. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
96579a4e |
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07-Sep-2016 |
Jarkko Nikula <jarkko.nikula@linux.intel.com> |
spi: pxa2xx: Remove pointer to chip data from driver data Transfer state machine in this driver does not need to set/unset pointer to chip data between queueing and finalizing message as it is not actually used as a state info itself but just pointer passing. Since this per SPI device specific chip data is already carried in ctldata use that and remove pointer to chip data from driver data. While at it, group initialized variables before uninitialized variables in pump_transfers(). Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
4fc0caac |
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07-Sep-2016 |
Jarkko Nikula <jarkko.nikula@linux.intel.com> |
spi: pxa2xx: Remove pointer to current SPI message from driver data There is no need to carry pointer to current SPI message in driver data because cur_msg in struct spi_master holds it already when driver is using the message queueing infrastructure from the SPI core. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
b6ced294 |
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21-Jun-2016 |
Jarkko Nikula <jarkko.nikula@linux.intel.com> |
spi: pxa2xx: Switch to SPI core DMA mapping functionality SPI core provides DMA mapping with scatterlists. Start using it instead of own implementation in spi-pxa2xx. Major difference in addition to bunch of removed boilerplate code is that SPI core does mapping/unmapping for all transfers in a message before and after the message sending where spi-pxa2xx did mapping/unmapping for each transfers separately. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
8c3ad488 |
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24-Mar-2016 |
Jarkko Nikula <jarkko.nikula@linux.intel.com> |
spi: pxa2xx: Use dummy buffers provided by SPI core Dummy buffer is used for half duplex transfers that don't have TX or RX buffer set. Instead of own dummy buffer management here let the SPI core to handle it by setting the SPI_MASTER_MUST_RX and SPI_MASTER_MUST_TX flags. Then core makes sure both transfer buffers are set. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
68335ec7 |
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24-Mar-2016 |
Jarkko Nikula <jarkko.nikula@linux.intel.com> |
spi: pxa2xx: Remove rx_/tx_map_len members from struct driver_data spi-pxa2xx-dma.c DMA engine implementation stopped using PIO for unaligned trailing bytes in the commit 111e0a9dc71e ("spi/pxa2xx: Prevent DMA from transferring too many bytes"). This means there is no need to update tx/rx transfer buffer pointers after DMA completion. These buffer pointers will be set to new buffers when handling the next transfer. Because this buffer pointer update was only remaining use for rx_map_len and tx_map_len members in struct driver_data after removing the legacy PXA DMA implementation they can be removed now. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
7c04b792 |
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19-Feb-2016 |
Jarkko Nikula <jarkko.nikula@linux.intel.com> |
spi: pxa2xx: Remove unused DMA buffer mappings Only legacy PXA DMA implementation was using these rx_dma and tx_dma DMA addresses so they are not needed after commit 6356437e65c2 ("spi: spi-pxa2xx: remove legacy PXA DMA bits"). Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
22a33632 |
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13-Jan-2016 |
Jarkko Nikula <jarkko.nikula@linux.intel.com> |
spi: pxa2xx: Remove CONFIG_SPI_PXA2XX_DMA After removal of legacy PXA DMA code by the commit 6356437e65c2 ("spi: spi-pxa2xx: remove legacy PXA DMA bits") the CONFIG_SPI_PXA2XX_DMA follows the CONFIG_SPI_PXA2XX and cannot be disabled alone. Therefore remove this config symbol and dead definitions from the spi-pxa2xx.h. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
54bf4505 |
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02-Oct-2015 |
Jarkko Nikula <jarkko.nikula@linux.intel.com> |
spi: pxa2xx: Remove unused psp member variable from struct chip_data It is not used since commit 8d94cc50aa4f ("[PATCH] spi: stabilize PIO mode transfers on PXA2xx systems"). Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
289de554 |
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01-Oct-2015 |
Mika Westerberg <mika.westerberg@linux.intel.com> |
spi: pxa2xx: Remove empty function pxa2xx_spi_dma_resume() This was leftover from the legacy pxa2xx DMA implementation and not needed anymore so remove it. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
0eca7cf2 |
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25-Sep-2015 |
Jarkko Nikula <jarkko.nikula@linux.intel.com> |
spi: pxa2xx: Set the max_speed_hz of the master Carry input clock of the controller in max_speed_hz of struct spi_master instead of in own driver data. They mean the same thing and more over now the max_speed_hz is not even set here. As an added bonus this allows SPI core to validate that transfer speed is not beyond the maximum input clock. This is not a problem in spi-pxa2xx as the driver doesn't use transfer speed parameter directly but via input clock divider calculation which will top at divide by one. However it's better to validate speed before passing it here. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
b69d42b5 |
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15-Sep-2015 |
Jarkko Nikula <jarkko.nikula@linux.intel.com> |
spi: pxa2xx: Remove cr0 variable from struct chip_data There hasn't been need to carry chip->cr0 after SPI core started to validate speed_hz and bits_per_word transfer parameters. That effectively caused that pump_transfers() always recalculated it and practically chip->cr0 is used locally in setup() for debug prints only. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
4f1474b3 |
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15-Sep-2015 |
Jarkko Nikula <jarkko.nikula@linux.intel.com> |
spi: pxa2xx: Remove two variables from struct chip_data There is no need to carry spi->max_speed_hz and spi->bits_per_word from setup() in "struct chip_data" since pump_transfers() will anyway take the transfer parameters from "struct spi_transfer". This is since SPI core validates both bits_per_word and speed_hz transfer parameters and defaults to spi->bits_per_word and spi->max_speed_hz in case these per transfer parameters are not set. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
757fe8d5 |
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05-Aug-2015 |
Jarkko Nikula <jarkko.nikula@linux.intel.com> |
spi: spi-pxa2xx: Remove unused legacy null dma buffer and allocation for it Remove null_dma_buf variable and extra allocation for it. It is not needed since commit 6356437e65c2 ("spi: spi-pxa2xx: remove legacy PXA DMA bits"). Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
f47da240 |
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03-Aug-2015 |
Jarkko Nikula <jarkko.nikula@linux.intel.com> |
spi: spi-pxa2xx: Remove unused legacy PXA DMA API channel numbers These became unused by the commit 6356437e65c2 ("spi: spi-pxa2xx: remove legacy PXA DMA bits"). Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
6356437e |
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08-Jun-2015 |
Daniel Mack <zonque@gmail.com> |
spi: spi-pxa2xx: remove legacy PXA DMA bits Generic DMA support was already implemented by commit cd7bed003404 ("spi/pxa2xx: break out the private DMA API usage into a separate file") which moved all the legacy PXA DMA implementation code into its own file. With generic DMA available for PXA, we can now just trash this file. Signed-off-by: Daniel Mack <zonque@gmail.com> Acked-by: Mark Brown <broonie@linaro.org> [respin after pxa dmaengine support upstream] Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
c039dd27 |
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18-Dec-2014 |
Jarkko Nikula <jarkko.nikula@linux.intel.com> |
spi: pxa2xx: Cleanup register access macros Currently SSP registers are accessed by having an own read and write macros for each register. For instance read_SSSR(iobase) and write_SSSR(iobase). In my opinion this hurts readability and requires new macros to be defined for each new added register. Let's define and use instead common pxa2xx_spi_read() and pxa2xx_spi_write() accessors. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
e5262d05 |
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26-Nov-2014 |
Weike Chen <alvin.chen@intel.com> |
spi: spi-pxa2xx: SPI support for Intel Quark X1000 There are two SPI controllers exported by PCI subsystem for Intel Quark X1000. The SPI memory mapped I/O registers supported by Quark are different from the current implementation, and Quark only supports the registers of 'SSCR0', 'SSCR1', 'SSSR', 'SSDR', and 'DDS_RATE'. This patch is to enable the SPI for Intel Quark X1000. This piece of work is derived from Dan O'Donovan's initial work for Intel Quark X1000 SPI enabling. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Weike Chen <alvin.chen@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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#
a0d2642e |
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21-Jan-2013 |
Mika Westerberg <mika.westerberg@linux.intel.com> |
spi/pxa2xx: add support for Intel Low Power Subsystem SPI Intel LPSS SPI is pretty much the same as the PXA27xx SPI except that it has few additional features over the original: o FIFO depth is 256 entries o RX FIFO has one watermark o TX FIFO has two watermarks, low and high o chip select can be controlled by writing to a register The new FIFO registers follow immediately the PXA27xx registers but then there are some additional LPSS private registers at offset 1k or 2k from the base address. For these private registers we add new accessors that take advantage of drv_data->lpss_base once it is resolved. We add a new type LPSS_SSP that can be used to distinguish the LPSS devices from others. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Tested-by: Lu Cao <lucao@marvell.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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#
5928808e |
|
21-Jan-2013 |
Mika Westerberg <mika.westerberg@linux.intel.com> |
spi/pxa2xx: add support for DMA engine To be able to use DMA with this driver on non-PXA platforms we implement support for the generic DMA engine API. This lets user to use different DMA engines with little or no modification to the driver. Request lines and channel numbers can be passed to the driver from the platform specific data. The DMA engine implementation will be selected by default even on PXA platform. User can select the legacy DMA API by enabling Kconfig option CONFIG_SPI_PXA2XX_PXADMA. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Lu Cao <lucao@marvell.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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#
cd7bed00 |
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21-Jan-2013 |
Mika Westerberg <mika.westerberg@linux.intel.com> |
spi/pxa2xx: break out the private DMA API usage into a separate file The PXA SPI driver uses PXA platform specific private DMA implementation which does not work on non-PXA platforms. In order to use this driver on other platforms we break out the private DMA implementation into a separate file that gets compiled only when CONFIG_SPI_PXA2XX_PXADMA is set. The DMA functions are stubbed out if there is no DMA implementation selected (i.e we are building on non-PXA platform). While we are there we can kill the dummy DMA bits in pxa2xx_spi.h as they are not needed anymore for CE4100. Once this is done we can add the generic DMA engine support to the driver that allows usage of any DMA controller that implements DMA engine API. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Lu Cao <lucao@marvell.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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