- 09 Oct, 2023 1 commit
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Fabrizio Castro authored
The CSI IP found inside the Renesas RZ/V2M SoC can also work in SPI target mode. When working in target mode, the IP will make use of the SS (Slave Selection) pin, with "low" as default active level. The active level of SS can be changed to "high" upon setting property "spi-cs-high" to true. By default, the SS will be used in target mode, unless property "renesas,csi-no-ss" is set to true, in which case data will be shifted in and out purely based on clock activity, and the logic level of the SS pin will be completely ignored. Signed-off-by:
Fabrizio Castro <fabrizio.castro.jz@renesas.com> Reviewed-by:
Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230927162508.328736-2-fabrizio.castro.jz@renesas.comSigned-off-by:
Mark Brown <broonie@kernel.org>
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- 06 Oct, 2023 2 commits
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Greg Kroah-Hartman authored
Now that the driver core allows for struct class to be in read-only memory, we should make all 'class' structures declared at build time placing them into read-only memory, instead of having to be dynamically allocated at runtime. Cc: Mark Brown <broonie@kernel.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/2023100639-celtic-herbs-66be@gregkhSigned-off-by:
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Geert Uytterhoeven authored
With W=1: drivers/spi/spi-mpc52xx-psc.c:178:5: warning: no previous prototype for ‘mpc52xx_psc_spi_transfer_one_message’ [-Wmissing-prototypes] 178 | int mpc52xx_psc_spi_transfer_one_message(struct spi_controller *ctlr, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ mpc52xx_psc_spi_transfer_one_message() is only used inside the file that defines it. Hence fix this by making it static. Fixes: 145cfc38 ("spi: mpc52xx-psc: Switch to using core message queue") Reported-by:kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202310061815.7Rtyi4hs-lkp@intel.com/Signed-off-by:
Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20231006112945.1491265-1-geert+renesas@glider.beSigned-off-by:
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- 26 Sep, 2023 4 commits
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Dhruva Gole authored
The following smatch warnings [0] were recently introduced: drivers/spi/spi-cadence-quadspi.c:1882 cqspi_probe() warn: missing unwind goto? Fix these warnings by releasing dma channel and adding a goto fail probe. [0] https://lore.kernel.org/all/5e21c351-cd08-443e-8509-aecf242a4da9@kadam.mountain/ Fixes: 0578a6db ("spi: spi-cadence-quadspi: add runtime pm support") Reported-by:
Dan Carpenter <dan.carpenter@linaro.org> Closes: https://lore.kernel.org/r/202309140543.03dMbMM5-lkp@intel.com/Signed-off-by:
Dhruva Gole <d-gole@ti.com> Link: https://lore.kernel.org/r/20230919074658.41666-1-d-gole@ti.comSigned-off-by:
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Vaishnav Achath authored
A hardcoded reference clock of 48 MHz is used to calculate the clock divisor values, but the reference clock frequency can be different across devices and can be configured which can cause a mismatch between the reported frequency and actual SPI clock frequency observed. Fix this by fetching the clock rate from the clock provider and falling back to hardcoded reference only if the clock is not supplied. Fixes: 2cd7d393 ("arm64: dts: ti: k3-am654: Add McSPI DT nodes") Signed-off-by:
Vaishnav Achath <vaishnav.a@ti.com> Reviewed-by:
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Rob Herring authored
Make it explicit that child nodes have additional properties and the child node schema is not complete. The complete schemas are applied separately based the compatible strings. Signed-off-by:
Jernej Skrabec <jernej.skrabec@gmail.com> Link: https://lore.kernel.org/r/20230925212614.1974243-1-robh@kernel.orgSigned-off-by:
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Mark Brown authored
Merge series from Stephan Gerhold <stephan.gerhold@kernkonzept.com>: Make it possible to scale performance states of the power domain and interconnect of the SPI QUP controller in relation to the selected SPI speed / core clock. This is done separately by: - Parsing the OPP table from the device tree for performance state votes of the power domain - Voting for the necessary bandwidth on the interconnect path to DRAM
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- 25 Sep, 2023 6 commits
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Christophe JAILLET authored
dma_request_chan() does not return NULL. It returns a valid pointer or an error pointer. So, some dead code can be removed. The IS_ERR_OR_NULL() in the error handling path are still needed, because the error handling path is common to the whole function and the ctlr->dma_xx are NULL when at91_usart_spi_configure_dma() is called. Signed-off-by:
Christophe JAILLET <christophe.jaillet@wanadoo.fr> Link: https://lore.kernel.org/r/84eb08daf85d203b34af9d8d08abf86804211413.1694961365.git.christophe.jaillet@wanadoo.frSigned-off-by:
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Rob Herring authored
In order to validate SPI peripherals, SPI controller-specific child node properties need to be in a separate schema, spi-peripheral-props.yaml, which SPI peripheral schemas reference. As there is just a single property in this case, just add it to spi-peripheral-props.yaml directly. Signed-off-by:
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Stephan Gerhold authored
When the SPI QUP controller is used together with a DMA engine it needs to vote for the interconnect path to the DRAM. Otherwise it may be unable to access the memory quickly enough. The requested peak bandwidth is dependent on the SPI core/bus clock so that the bandwidth scales together with the selected SPI speed. To avoid sending votes too often the bandwidth is always requested when a DMA transfer starts, but dropped only on runtime suspend. Runtime suspend should only happen if no transfer is active. After resumption we can defer the next vote until the first DMA transfer actually happens. Signed-off-by:
Stephan Gerhold <stephan.gerhold@kernkonzept.com> Link: https://lore.kernel.org/r/20230919-spi-qup-dvfs-v2-4-1bac2e9ab8db@kernkonzept.comSigned-off-by:
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Stephan Gerhold authored
When the SPI QUP controller is used together with a DMA engine it needs to vote for the interconnect path to the DRAM. Otherwise it may be unable to access the memory quickly enough. Reviewed-by:
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by:
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Stephan Gerhold authored
Parse the OPP table from the device tree and use dev_pm_opp_set_rate() instead of clk_set_rate() to allow making performance state for power domains specified in the OPP table. This is needed to guarantee correct behavior of the clock, especially with the higher clock/SPI bus frequencies. Acked-by:
Konrad Dybcio <konrad.dybcio@linaro.org> Signed-off-by:
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Stephan Gerhold authored
Document power-domains and operating-points-v2 to allow making performance state votes for certain clock frequencies of the SPI QUP controller. Reviewed-by:
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- 22 Sep, 2023 1 commit
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Kees Cook authored
Prepare for the coming implementation by GCC and Clang of the __counted_by attribute. Flexible array members annotated with __counted_by can have their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family functions). As found with Coccinelle[1], add __counted_by for struct pci1xxxx_spi. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Mark Brown <broonie@kernel.org> Cc: linux-spi@vger.kernel.org Signed-off-by:
Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20230922175322.work.170-kees@kernel.orgSigned-off-by:
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- 18 Sep, 2023 2 commits
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Bartosz Golaszewski authored
Currently the bcm2835 SPI driver uses functions that are available exclusively to GPIO providers as a way to handle a platform quirk. Let's use a slightly better alternative that avoids poking around in GPIOLIB's internals and use GPIO lookup tables. Link: https://www.spinics.net/lists/linux-gpio/msg36218.htmlSigned-off-by:
Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Reviewed-by:
Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20230911161553.24313-1-brgl@bgdev.plSigned-off-by:
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Uwe Kleine-König authored
Both callers of spi_stop_queue() (i.e. spi_destroy_queue() and spi_controller_suspend()) already emit an error message if spi_stop_queue() fails. Another warning in this case isn't helpful, so drop it. Signed-off-by:
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Link: https://lore.kernel.org/r/20230916161235.1050176-1-u.kleine-koenig@pengutronix.deSigned-off-by:
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- 15 Sep, 2023 1 commit
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Rob Herring authored
In order to validate SPI peripherals, SPI controller-specific child node properties need to be in a separate schema, spi-peripheral-props.yaml, which SPI peripheral schemas reference. Move the arm,pl022 child properties to their own schema file and add a $ref in spi-peripheral-props.yaml. Signed-off-by:
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- 11 Sep, 2023 23 commits
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Mark Brown authored
Merge series from Li Zetao <lizetao1@huawei.com>: Commit 7ef9651e ("clk: Provide new devm_clk helpers for prepared and enabled clocks") provides a new helper function for prepared and enabled clocks when a driver keeps a clock prepared (or enabled) during the whole lifetime of the driver. So where drivers get clocks and enable them immediately, it can be combined into a single function devm_clk_get_*(). Moreover, the unprepare and disable function has been registered to devm_clk_state, and before devm_clk_state is released, the clocks will be unprepareed and disable, so it is unnecessary to unprepare and disable clocks explicitly when remove drivers or in the error handling path.
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Mark Brown authored
Merge series from Yang Yingliang <yangyingliang@huawei.com>: I'm trying to rename the legacy name to modern name used in SPI drivers, this is part3 patchset. After introducing devm_spi_alloc_host/spi_alloc_host(), the legacy named function devm_spi_alloc_master/spi_alloc_master() can be replaced. And also change other legacy name master/slave to modern name host/target or controller. Each patch compile test passed.
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Mark Brown authored
Merge series from Andy Shevchenko <andriy.shevchenko@linux.intel.com>: A few cleanups to the spidev.c to utilize existing APIs and make it use less amount of Lines of Code. No functional change intended.
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Dhruva Gole authored
Add runtime pm support to cadence-qspi driver, this allows the driver to suspend whenever it's is not actively being used thus reducing active power consumed by the system. Also, with the use of devm_pm_runtime_enable we no longer need the fallback probe_pm_failed that used to pm_runtime_disable Co-developed-by:
Apurva Nandan <a-nandan@ti.com> Signed-off-by:
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Zhang Shurong authored
This func misses checking for platform_get_irq()'s call and may passes the negative error codes to request_irq(), which takes unsigned IRQ #, causing it to fail with -EINVAL, overriding an original error code. Fix this by stop calling request_irq() with invalid IRQ #s. Fixes: dc4dc360 ("spi: tegra: add spi driver for SLINK controller") Signed-off-by:
Zhang Shurong <zhang_shurong@foxmail.com> Reviewed-by:
Helen Koike <helen.koike@collabora.com> Link: https://lore.kernel.org/r/tencent_73FCC06A3D1C14EE5175253C6FB46A07B709@qq.comSigned-off-by:
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Li Zetao authored
Since commit 7ef9651e ("clk: Provide new devm_clk helpers for prepared and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be replaced by devm_clk_get_enabled() when driver enables (and possibly prepares) the clocks for the whole lifetime of the device. Moreover, it is no longer necessary to unprepare and disable the clocks explicitly. Reviewed-by:
Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by:
Li Zetao <lizetao1@huawei.com> Link: https://lore.kernel.org/r/20230823133938.1359106-26-lizetao1@huawei.comSigned-off-by:
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Li Zetao authored
Since commit 7ef9651e ("clk: Provide new devm_clk helpers for prepared and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be replaced by devm_clk_get_enabled() when driver enables (and possibly prepares) the clocks for the whole lifetime of the device. Moreover, it is no longer necessary to unprepare and disable the clocks explicitly. Moreover, the label "err_no_clk_en" is no used, drop it for clean code. Reviewed-by:
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Li Zetao authored
Since commit 7ef9651e ("clk: Provide new devm_clk helpers for prepared and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be replaced by devm_clk_get_enabled() when driver enables (and possibly prepares) the clocks for the whole lifetime of the device. Moreover, it is no longer necessary to unprepare and disable the clocks explicitly. Reviewed-by:
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Li Zetao authored
Since commit 7ef9651e ("clk: Provide new devm_clk helpers for prepared and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be replaced by devm_clk_get_enabled() when driver enables (and possibly prepares) the clocks for the whole lifetime of the device. Moreover, it is no longer necessary to unprepare and disable the clocks explicitly. Reviewed-by:
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Li Zetao authored
Since commit 7ef9651e ("clk: Provide new devm_clk helpers for prepared and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be replaced by devm_clk_get_enabled() when driver enables (and possibly prepares) the clocks for the whole lifetime of the device. Moreover, it is no longer necessary to unprepare and disable the clocks explicitly. Reviewed-by:
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Li Zetao authored
Since commit 7ef9651e ("clk: Provide new devm_clk helpers for prepared and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be replaced by devm_clk_get_enabled() when driver enables (and possibly prepares) the clocks for the whole lifetime of the device. Moreover, it is no longer necessary to unprepare and disable the clocks explicitly. Reviewed-by:
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Li Zetao authored
Since commit 7ef9651e ("clk: Provide new devm_clk helpers for prepared and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be replaced by devm_clk_get_enabled() when driver enables (and possibly prepares) the clocks for the whole lifetime of the device. Moreover, it is no longer necessary to unprepare and disable the clocks explicitly. Also, devm_clk_get_optional() and clk_prepare_enable() can now be replaced by devm_clk_get_optional_enabled().Moreover, the two functions mtk_snand_enable_clk() and mtk_snand_disable_clk() no longer are used, drop them for clean code. Reviewed-by:
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Li Zetao authored
Since commit 7ef9651e ("clk: Provide new devm_clk helpers for prepared and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be replaced by devm_clk_get_enabled() when driver enables (and possibly prepares) the clocks for the whole lifetime of the device. Moreover, it is no longer necessary to unprepare and disable the clocks explicitly. Reviewed-by:
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Li Zetao authored
Since commit 7ef9651e ("clk: Provide new devm_clk helpers for prepared and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be replaced by devm_clk_get_enabled() when driver enables (and possibly prepares) the clocks for the whole lifetime of the device. Moreover, it is no longer necessary to unprepare and disable the clocks explicitly. Reviewed-by:
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Li Zetao authored
Since commit 7ef9651e ("clk: Provide new devm_clk helpers for prepared and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be replaced by devm_clk_get_enabled() when driver enables (and possibly prepares) the clocks for the whole lifetime of the device. Moreover, it is no longer necessary to unprepare and disable the clocks explicitly. Moreover, the lable "out_clk" no longer makes sense, rename it to "out_pm". Reviewed-by:
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Li Zetao authored
Since commit 7ef9651e ("clk: Provide new devm_clk helpers for prepared and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be replaced by devm_clk_get_enabled() when driver enables (and possibly prepares) the clocks for the whole lifetime of the device. Moreover, it is no longer necessary to unprepare and disable the clocks explicitly. Reviewed-by:
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Li Zetao authored
Since commit 7ef9651e ("clk: Provide new devm_clk helpers for prepared and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be replaced by devm_clk_get_enabled() when driver enables (and possibly prepares) the clocks for the whole lifetime of the device. Moreover, it is no longer necessary to unprepare and disable the clocks explicitly. Reviewed-by:
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Li Zetao authored
Since commit 7ef9651e ("clk: Provide new devm_clk helpers for prepared and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be replaced by devm_clk_get_enabled() when driver enables (and possibly prepares) the clocks for the whole lifetime of the device. Moreover, it is no longer necessary to unprepare and disable the clocks explicitly. Reviewed-by:
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Li Zetao authored
Since commit 7ef9651e ("clk: Provide new devm_clk helpers for prepared and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be replaced by devm_clk_get_enabled() when driver enables (and possibly prepares) the clocks for the whole lifetime of the device. Moreover, it is no longer necessary to unprepare and disable the clocks explicitly. Also, devm_clk_get_optional() and clk_prepare_enable() can now be replaced by devm_clk_get_optional_enabled(). Moreover, the lable "out_clk" no longer makes sense, rename it to "out_reset". Signed-off-by:
Serge Semin <fancer.lancer@gmail.com> Link: https://lore.kernel.org/r/20230823133938.1359106-13-lizetao1@huawei.comSigned-off-by:
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Li Zetao authored
Since commit 7ef9651e ("clk: Provide new devm_clk helpers for prepared and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be replaced by devm_clk_get_enabled() when driver enables (and possibly prepares) the clocks for the whole lifetime of the device. Moreover, it is no longer necessary to unprepare and disable the clocks explicitly. Reviewed-by:
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Li Zetao authored
Since commit 7ef9651e ("clk: Provide new devm_clk helpers for prepared and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be replaced by devm_clk_get_enabled() when driver enables (and possibly prepares) the clocks for the whole lifetime of the device. Moreover, it is no longer necessary to unprepare and disable the clocks explicitly. Reviewed-by:
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Li Zetao authored
Since commit 7ef9651e ("clk: Provide new devm_clk helpers for prepared and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be replaced by devm_clk_get_enabled() when driver enables (and possibly prepares) the clocks for the whole lifetime of the device. Moreover, it is no longer necessary to unprepare and disable the clocks explicitly. Reviewed-by:
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Li Zetao authored
Since commit 7ef9651e ("clk: Provide new devm_clk helpers for prepared and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be replaced by devm_clk_get_enabled() when driver enables (and possibly prepares) the clocks for the whole lifetime of the device. Moreover, it is no longer necessary to unprepare and disable the clocks explicitly. Reviewed-by:
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