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path: root/drivers/spi/omap3_spi.c
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* omap3: Fix SPI registers on am33xx and am43xxMartin Hejnfelt2016-05-23-3/+20
| | | | | | | | | | | | | When the base registers are read from device tree the base is not 0x48030100 as the driver expects, but 0x48030000, resulting in non functioning SPI. To deal with this, use same idea as how this is done in the linux kernel (drivers/spi/spi-omap2-mcspi.c) and add a structure with a field that is used to shift the registers on these systems. v2: Fixed commit subject line to correct cpu Signed-off-by: Martin Hejnfelt <mh@newtec.dk>
* spi: omap3: Fix multiple definition of 'priv'Jagan Teki2016-03-15-19/+21
| | | | | | | | | | | | | Global definition of priv seems no-sense to use it for non-dm case and pass the pointer to functions which are common to both dm and non-dm. So, fix this by removing omap3_spi_slave from non-dm and make visible to omap3_spi_priv for both dm and non-dm. Cc: Christophe Ricard <christophe-h.ricard@st.com> Reported-by: Tom Rini <trini@konsulko.com> Signed-off-by: Jagan Teki <jteki@openedev.com>
* spi: omap3: Convert to driver modelJagan Teki2016-03-14-270/+409
| | | | | | | | | | | | | | | After this conversion the driver will able to support both dm and non-dm and code is more extensible like we can remove the non-dm part simply without touching anycode if all the boards which are using this driver become dm driven. Cc: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org> Acked-by: Christophe Ricard <christophe-h.ricard@st.com> Tested-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Jagan Teki <jteki@openedev.com> [Set priv->wordlen, Add Kconfig entry and file credit for dm conversion] Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
* spi: omap3: Make local functions as staticJagan Teki2016-03-14-6/+6
| | | | | | | | | Attach static on local defined functions. Cc: Tom Rini <trini@konsulko.com> Cc: Simon Glass <sjg@chromium.org> Signed-off-by: Jagan Teki <jteki@openedev.com> Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
* spi: omap3: Move headers code inside the driverJagan Teki2016-03-14-2/+86
| | | | | | | | | | | | Header file have macro's and register definition and some unneeded function proto types which becomes tunned further in future patches and entire driver code resides in one file for more readability. Cc: Tom Rini <trini@konsulko.com> Cc: Simon Glass <sjg@chromium.org> Signed-off-by: Jagan Teki <jteki@openedev.com> [Fixes on code styles, Remove omap3_spi_txrx|write|read in header] Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
* spi: omap3: Remove unused variable irqstatus in omap3_spi_txrxChristophe Ricard2016-02-23-2/+0
| | | | | | | | Remove unused variable irqstatus in omap3_spi_txrx Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagan Teki <jteki@openedev.com>
* spi: omap3: Fix timeout handlingDavid Dueck2015-04-27-8/+12
| | | | | | | | | | | | | | | The timeout value is never reset during the transfer. This means that when transferring more data we eventually trigger the timeout. This was reported on the mailing list: "Spansion SPI flash read timeout with AM335x" Signed-off-by: David Dueck <davidcdueck@googlemail.com> CC: Tom Rini <trini@konsulko.com> CC: Stefan Roese <sr@denx.de> CC: Andy Pont <andy.pont@sdcsystems.com> Tested-by: David Dueck <davidcdueck@googlemail.com> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* drivers/spi/omap3: Bug fix of premature write transfer completionVasili Galka2014-03-12-2/+3
| | | | | | | | | | The logic determining SPI "write" transfer completion was faulty. At certain conditions (e.g. slow SPI clock freq) the transfers were interrupted before completion. Both EOT and TXS flags of channel status registeer shall be checked to ensure that all data was transferred. Tested on AM3359 chip. Signed-off-by: Vasili Galka <vasili@visionmap.com>
* spi: omap3: add support for more word lengthsNikita Kiryanov2013-11-12-20/+49
| | | | | | | | | | | | | | | | | | Current implementation only supports 8 bit word lengths, even though omap3 can handle anything between 4 and 32. Update the spi interface to support changing the SPI word length, and implement it in omap3_spi driver to support the full range of possible word lengths. This implementation is backwards compatible by defaulting to the old behavior of 8 bit word lengths. Also, it required a change to the omap3_spi non static I/O functions, but since they are not used anywhere else, no collateral changes are required. Cc: Tom Rini <trini@ti.com> Cc: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com> Cc: Igor Grinberg <grinberg@compulab.co.il> Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
* spi: omap3: remove semicolon from #defineNikita Kiryanov2013-11-12-1/+1
| | | | | | | | | | Remove unnecessary semicolon from #define SPI_WAIT_TIMEOUT Cc: Tom Rini <trini@ti.com> Cc: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com> Cc: Igor Grinberg <grinberg@compulab.co.il> Cc: Gerhard Sittig <gsi@denx.de> Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
* Coding Style cleanup: replace leading SPACEs by TABsWolfgang Denk2013-10-14-5/+5
| | | | | | Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Drop changes for PEP 4 following python tools] Signed-off-by: Tom Rini <trini@ti.com>
* Coding Style cleanup: remove trailing white spaceWolfgang Denk2013-10-14-1/+1
| | | | Signed-off-by: Wolfgang Denk <wd@denx.de>
* Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk2013-07-24-18/+1
| | | | | | Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
* spi: Use spi_alloc_slave() in each SPI driverSimon Glass2013-03-19-13/+14
| | | | | | | | Rather than each driver having its own way to allocate a SPI slave, use the new allocation function everywhere. This will make it easier to extend the interface without breaking drivers. Signed-off-by: Simon Glass <sjg@chromium.org>
* OMAP3 SPI : Fixed bugs related to SPI transferajoy2012-12-10-32/+44
| | | | | | | | | | | | | | | | | | | | | | Added posted writes (read after writes) to effect the change immediately for channel confiuration and channel enable register Disable the channel to purge receieve data in TX_ONLY mode transfer otherwise rx data will get affected by the next immediate RX_ONLY mode transfer Wait for the EOT bit to be set after last byte has been loaded to TX shift register in the the TX_ONLY mode.This ensures TX data has been completely shifted out Disable the channel in RX_ONLY mode before reading the last data from RXX register to prevent the SPI slave to transmit next word Signed-off-by: Ajoy Kumar Das <akdas75@yahoo.in> Cc: Tom Rini <trini@ti.com> Cc: jacopo mondi <j.mondi@voltaelectronics.com>
* omap3_spi: introduce CONFIG_OMAP3_SPI_D0_D1_SWAPPEDPeter Korsgaard2012-10-25-6/+5
| | | | | | | | | | D0/D1 Swapped or not is a board property, not anything specific to the am33xx SoC, so add a custom define for it. At the same time correct the bit handling for the swapped mode (DPE0 should be cleared and SI/DPE1 set). Signed-off-by: Peter Korsgaard <peter.korsgaard@barco.com>
* am335x evm: Enable support for spi0Tom Rini2012-09-01-0/+10
| | | | Signed-off-by: Tom Rini <trini@ti.com>
* am33xx: Add support, update omap3 McSPI driverTom Rini2012-09-01-0/+6
| | | | Signed-off-by: Tom Rini <trini@ti.com>
* omap3_spi: receive transmit modejacopo mondi2012-03-27-3/+63
| | | | | | | | | | Implementation of receive-transmit mode for omap3 MCSPI. Introduces full duplex communication, needed by some spi devices (such as enc28j60). Signed-off-by: jacopo mondi <mondi@cs.unibo.it> <j.mondi@voltaelectronics.com>
* OMAP3: SPI driverDirk Behme2010-12-11-0/+352
CC: Ruslan N. Araslanov <byaaka@yandex.ru> Signed-off-by: Ruslan Araslanov <ruslan.araslanov@vitecmm.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
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