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path: root/src/soc/nvidia/tegra210/spi.c
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2017-05-24soc/nvidia/tegra*: Move spi driver to use spi_bus_mapFurquan Shaikh
This is in preparation to get rid of the strong spi_setup_slave implemented by different platforms. BUG=b:38430839 Change-Id: I873b96d286655a814554bfd89f899ee87302b06d Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://review.coreboot.org/19769 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com>
2017-05-05drivers/spi: Re-factor spi_crop_chunkFurquan Shaikh
spi_crop_chunk is a property of the SPI controller since it depends upon the maximum transfer size that is supported by the controller. Also, it is possible to implement this within spi-generic layer by obtaining following parameters from the controller: 1. max_xfer_size: Maximum transfer size supported by the controller (Size of 0 indicates invalid size, and unlimited transfer size is indicated by UINT32_MAX.) 2. deduct_cmd_len: Whether cmd_len needs to be deducted from the max_xfer_size to determine max data size that can be transferred. (This is used by the amd boards.) Change-Id: I81c199413f879c664682088e93bfa3f91c6a46e5 Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://review.coreboot.org/19386 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Tested-by: coreboot org <coreboot.org@gmail.com>
2016-12-05spi: Define and use spi_ctrlr structureFurquan Shaikh
1. Define a new structure spi_ctrlr that allows platforms to define callbacks for spi operations (claim bus, release bus, transfer). 2. Add a new member (pointer to spi_ctrlr structure) in spi_slave structure which will be initialized by call to spi_setup_slave. 3. Define spi_claim_bus, spi_release_bus and spi_xfer in spi-generic.c which will make appropriate calls to ctrlr functions. BUG=chrome-os-partner:59832 BRANCH=None TEST=Compiles successfully Change-Id: Icb2326e3aab1e8f4bef53f553f82b3836358c55e Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://review.coreboot.org/17684 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2016-12-05spi: Pass pointer to spi_slave structure in spi_setup_slaveFurquan Shaikh
For spi_setup_slave, instead of making the platform driver return a pointer to spi_slave structure, pass in a structure pointer that can be filled in by the driver as required. This removes the need for platform drivers to maintain a slave structure in data/CAR section. BUG=chrome-os-partner:59832 BRANCH=None TEST=Compiles successfully Change-Id: Ia15a4f88ef4dcfdf616bb1c22261e7cb642a7573 Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://review.coreboot.org/17683 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2016-12-05spi: Fix parameter types for spi functionsFurquan Shaikh
1. Use size_t instead of unsigned int for bytes_out and bytes_in. 2. Use const attribute for spi_slave structure passed into xfer, claim bus and release bus functions. BUG=chrome-os-partner:59832 BRANCH=None TEST=Compiles successfully Change-Id: Ie70b3520b51c42d750f907892545510c6058f85a Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://review.coreboot.org/17682 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2016-08-09soc/nvidia/tegra210: remove unused spi boot device supportAaron Durbin
All mainboards utilizing the t210 SoC use the CBFS spi wrapper for the boot device support. Therefore, remove the unutilized spi boot device. BUG=chrome-os-partner:55932 Change-Id: Id49ca6e5bf353bba8c03e62f5a9a873ad1ce7081 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/16109 Tested-by: build bot (Jenkins) Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2015-10-31tree: drop last paragraph of GPL copyright headerPatrick Georgi
It encourages users from writing to the FSF without giving an address. Linux also prefers to drop that and their checkpatch.pl (that we imported) looks out for that. This is the result of util/scripts/no-fsf-addresses.sh with no further editing. Change-Id: Ie96faea295fe001911d77dbc51e9a6789558fbd6 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: http://review.coreboot.org/11888 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2015-07-16t210: SPI driver cleanupFurquan Shaikh
1. Get rid of spi_delay - Instead have a tight loop to check for the spi status 2. The first check for SPI operation complete i.e. FIFOs have been processed is the SPI_STATUS_RDY bit. Thus, tegra_spi_wait should check for this bit before reading BLOCK_COUNT or any other fifo count field. 3. Flush both TX and RX FIFOs for SEND and RECV operations for PIO and DMA. 4. No need to check for rx_fifo_count == spi_byte_count to determine pio_finish operation. RDY bit should be sufficient to ensure that the SPI operation is complete. Added assert to ensure we never hit the case of RDY bit being set, yet rx_fifo_count != spi_byte_count for PIO. BUG=chrome-os-partner:41877 BRANCH=None TEST=Compiles successfully and reboot test runs successfully for 10K+ iterations. Change-Id: I1adb9672c1503b562309a8bc6c22fe7d2271768e Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: de1515605e17e0c6b81874f9f3c49fd0c1b92756 Original-Change-Id: I5853d0df1bfd6020a17e478040bc4c1834563fe4 Original-Signed-off-by: Furquan Shaikh <furquan@google.com> Original-Reviewed-on: https://chromium-review.googlesource.com/285141 Original-Reviewed-by: Jimmy Zhang <jimmzhang@nvidia.com> Original-Tested-by: Jimmy Zhang <jimmzhang@nvidia.com> Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org> Original-Tested-by: Furquan Shaikh <furquan@chromium.org> Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org> Original-Trybot-Ready: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/10947 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-06-30nvidia/tegra210: add new SoCPatrick Georgi
This includes Chrome OS downstream up to Change-Id: Ic89ed54c. Change-Id: I81853434600390d643160fe57554495b2bfe60ab Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: http://review.coreboot.org/10633 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>