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* spi: rpc-if: Add resume support for RZ/G3EBiju Das2025-09-221-0/+2
| | | | | | | | | On RZ/G3E using PSCI, s2ram powers down the SoC. After resume, reinitialize the hardware for SPI operations. Signed-off-by: Biju Das <[email protected]> Link: https://patch.msgid.link/[email protected] Signed-off-by: Mark Brown <[email protected]>
* spi: rpc-if: Drop deprecated SIMPLE_DEV_PM_OPSBiju Das2025-09-221-6/+4
| | | | | | | | | | | | | Replace SIMPLE_DEV_PM_OPS->DEFINE_SIMPLE_DEV_PM_OPS macro and use pm_sleep_ptr(). This lets us drop the check for CONFIG_PM_SLEEP, and reduces kernel size in case CONFIG_PM or CONFIG_PM_SLEEP is disabled, while increasing build coverage. Also drop the __maybe_unused attribute from PM functions. Signed-off-by: Biju Das <[email protected]> Link: https://patch.msgid.link/[email protected] Signed-off-by: Mark Brown <[email protected]>
* spi: rpc-if: Add write support for memory-mapped areaBiju Das2025-05-081-1/+15
| | | | | | | | | Add write support for memory-mapped area as xSPI interface require it. Signed-off-by: Biju Das <[email protected]> Link: https://patch.msgid.link/[email protected] Signed-off-by: Mark Brown <[email protected]>
* spi: Merge up v6.12Mark Brown2024-10-071-1/+1
|\ | | | | | | Fixes build issues with the KVM selftests.
| * move asm/unaligned.h to linux/unaligned.hAl Viro2024-10-021-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | asm/unaligned.h is always an include of asm-generic/unaligned.h; might as well move that thing to linux/unaligned.h and include that - there's nothing arch-specific in that header. auto-generated by the following: for i in `git grep -l -w asm/unaligned.h`; do sed -i -e "s/asm\/unaligned.h/linux\/unaligned.h/" $i done for i in `git grep -l -w asm-generic/unaligned.h`; do sed -i -e "s/asm-generic\/unaligned.h/linux\/unaligned.h/" $i done git mv include/asm-generic/unaligned.h include/linux/unaligned.h git mv tools/include/asm-generic/unaligned.h tools/include/linux/unaligned.h sed -i -e "/unaligned.h/d" include/asm-generic/Kbuild sed -i -e "s/__ASM_GENERIC/__LINUX/" include/linux/unaligned.h tools/include/linux/unaligned.h
* | spi: Switch back to struct platform_driver::remove()Uwe Kleine-König2024-09-291-1/+1
|/ | | | | | | | | | | | | | | | | | | After commit 0edb555a65d1 ("platform: Make platform_driver::remove() return void") .remove() is (again) the right callback to implement for platform drivers. Convert all platform drivers below drivers/spi to use .remove(), with the eventual goal to drop struct platform_driver::remove_new(). As .remove() and .remove_new() have the same prototypes, conversion is done by just changing the structure member name in the driver initializer. The change for the spi-npcm-fiu stands out in the diffstat because the inconsistent formatting style of the platform_driver initializer is fixed to match the other struct initializer in the file. Signed-off-by: Uwe Kleine-König <[email protected]> Link: https://patch.msgid.link/[email protected] Signed-off-by: Mark Brown <[email protected]>
* spi: rpc-if: Add missing MODULE_DEVICE_TABLEBiju Das2024-07-311-0/+7
| | | | | | | | | | | Add missing MODULE_DEVICE_TABLE definition for automatic loading of the driver when it is built as a module. Fixes: eb8d6d464a27 ("spi: add Renesas RPC-IF driver") Signed-off-by: Biju Das <[email protected]> Reviewed-by: Geert Uytterhoeven <[email protected]> Link: https://patch.msgid.link/[email protected] Signed-off-by: Mark Brown <[email protected]>
* spi: rpc-if: differentiate between unsupported and invalid requestsMiquel Raynal2024-05-271-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | If the request is out of range, returning -EINVAL seems a better pick than -ENOTSUPP. >From a caller (and reviewer) point of view, distinguising between the two may be helpful because somehow one can be "fixed" while the other will always be refused no matter how hard we try. As part of a wider work to bring spi-nand continuous reads, it was useful to easily catch the upper limit direct mapping boundaries for each controller, with the idea of enlarging this area from a page to an eraseblock, without risking too many regressions. In all other cases, as part of a wider work towards using -EOPNOTSUP rather than -ENOTSUPP (which is not a SUSV4 code), let's change the error code to be uniform across spi-mem controller drivers. Finally, reword a little bit the conditions to clarify what is intended (ie. checking for the presence of a direct mapping, and also ensuring we create a dirmap only on DATA_IN flows). Signed-off-by: Miquel Raynal <[email protected]> Link: https://msgid.link/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
* spi: rpc-if: switch to use devm_spi_alloc_host()Yang Yingliang2023-08-161-1/+1
| | | | | | | | | | | Switch to use modern name function devm_spi_alloc_host(). No functional changed. Signed-off-by: Yang Yingliang <[email protected]> Reviewed-by: Geert Uytterhoeven <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
* spi: rpc-if: Convert to platform remove callback returning voidUwe Kleine-König2023-03-061-4/+2
| | | | | | | | | | | | | | | | | The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is (mostly) ignored and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new() which already returns void. Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
* memory: renesas-rpc-if: Remove Runtime PM wrappersGeert Uytterhoeven2023-01-231-3/+3
| | | | | | | | | | | Now the rpcif_{en,dis}able_rpm() wrappers just take a pointer to a device structure, there is no point in keeping them. Remove them, and update the callers to call Runtime PM directly. Signed-off-by: Geert Uytterhoeven <[email protected]> Acked-by: Wolfram Sang <[email protected]> Link: https://lore.kernel.org/r/d87aa5d7e4a39b18f7e2e0649fee0a45b45d371f.1669213027.git.geert+renesas@glider.be Signed-off-by: Krzysztof Kozlowski <[email protected]>
* memory: renesas-rpc-if: Pass device instead of rpcif to rpcif_*()Geert Uytterhoeven2023-01-231-7/+7
| | | | | | | | | | | | | Most rpcif_*() API functions do not need access to any other fields in the rpcif structure than the device pointer. Simplify dependencies by passing the device pointer instead. Signed-off-by: Geert Uytterhoeven <[email protected]> Acked-by: Miquel Raynal <[email protected]> Acked-by: Mark Brown <[email protected]> Acked-by: Wolfram Sang <[email protected]> Link: https://lore.kernel.org/r/0460fe82ba348cedec7a9a75a8eff762c50e817b.1669213027.git.geert+renesas@glider.be Signed-off-by: Krzysztof Kozlowski <[email protected]>
* spi: rpc-if: Fix RPM imbalance in probe error pathGeert Uytterhoeven2022-04-041-2/+6
| | | | | | | | | | If rpcif_hw_init() fails, Runtime PM is left enabled. Fixes: b04cc0d912eb80d3 ("memory: renesas-rpc-if: Add support for RZ/G2L") Signed-off-by: Geert Uytterhoeven <[email protected]> Reviewed-by: Wolfram Sang <[email protected]> Link: https://lore.kernel.org/r/1c78a1f447d019bb66b6e7787f520ae78821e2ae.1648562287.git.geert+renesas@glider.be Signed-off-by: Mark Brown <[email protected]>
* memory: renesas-rpc-if: Add support for RZ/G2LLad Prabhakar2021-11-161-1/+3
| | | | | | | | | | | | | | SPI Multi I/O Bus Controller on RZ/G2L SoC is almost identical to the RPC-IF interface found on R-Car Gen3 SoC's. This patch adds a new compatible string for the RZ/G2L family so that the timing values on RZ/G2L can be adjusted. Signed-off-by: Lad Prabhakar <[email protected]> Reviewed-by: Biju Das <[email protected]> Reviewed-by: Wolfram Sang <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Krzysztof Kozlowski <[email protected]>
* spi: spi-rpc-if: Check return value of rpcif_sw_init()Lad Prabhakar2021-10-261-1/+3
| | | | | | | | | | | | | rpcif_sw_init() can fail so make sure we check the return value of it and on error exit rpcif_spi_probe() callback with error code. Fixes: eb8d6d464a27 ("spi: add Renesas RPC-IF driver") Signed-off-by: Lad Prabhakar <[email protected]> Reviewed-by: Biju Das <[email protected]> Reviewed-by: Wolfram Sang <[email protected]> Reviewed-by: Geert Uytterhoeven <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
* spi: rpc-if: Gaurd .pm assignment with CONFIG_PM_SLEEP #ifdef checkLad Prabhakar2021-01-111-0/+2
| | | | | | | | | | | | | | | | With CONFIG_PM_SLEEP disabled the rpcif_spi_pm_ops variable is still referenced and thus increasing the size of kernel. Fix this issue by adding CONFIG_PM_SLEEP #ifdef check around the .pm assignment (image size is critical on RZ/A SoC's where the SRAM sizes range 4~5 MiB). Fixes: 9584fc95cadc0 ("spi: rpc-if: Remove CONFIG_PM_SLEEP ifdefery") Reported-by: Geert Uytterhoeven <[email protected]> Suggested-by: Pavel Machek <[email protected]> Signed-off-by: Lad Prabhakar <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
* spi: rpc-if: Remove CONFIG_PM_SLEEP ifdeferyLad Prabhakar2020-12-311-8/+3
| | | | | | | | | | | Use __maybe_unused for the suspend()/resume() hooks and get rid of the CONFIG_PM_SLEEP ifdefery to improve the code. Suggested-by: Pavel Machek <[email protected]> Signed-off-by: Lad Prabhakar <[email protected]> Acked-by: Pavel Machek <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
* spi: rpc-if: Fix use-after-free on unbindLukas Wunner2020-12-071-7/+2
| | | | | | | | | | | | | | | | | rpcif_spi_remove() accesses the driver's private data after calling spi_unregister_controller() even though that function releases the last reference on the spi_controller and thereby frees the private data. Fix by switching over to the new devm_spi_alloc_master() helper which keeps the private data accessible until the driver has unbound. Fixes: eb8d6d464a27 ("spi: add Renesas RPC-IF driver") Signed-off-by: Lukas Wunner <[email protected]> Cc: <[email protected]> # v5.9+: 5e844cc37a5c: spi: Introduce device-managed SPI controller allocation Cc: <[email protected]> # v5.9+ Cc: Sergei Shtylyov <[email protected]> Link: https://lore.kernel.org/r/c5da472c28021da2f6517441685cef033d40b140.1607286887.git.lukas@wunner.de Signed-off-by: Mark Brown <[email protected]>
* spi: add Renesas RPC-IF driverSergei Shtylyov2020-06-151-0/+216
Add the SPI driver for the Renesas RPC-IF. It's the "front end" driver using the "back end" APIs in the main driver to talk to the real hardware. We only implement the 'spi-mem' interface -- there's no need to implement the usual SPI driver methods... Based on the original patch by Mason Yang <[email protected]>. Signed-off-by: Sergei Shtylyov <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
generated by cgit (git 2.51.2) at 2025-12-03 14:34:46 +0000