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path: root/drivers/spi/spi-npcm-pspi.c
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2020-01-23Merge branch 'spi-5.6' into spi-nextMark Brown1-22/+18
2020-01-17spi: npcm-pspi: modify reset supportTomer Maimon1-22/+11
Modify NPCM perphiral SPI reset support from direct register access to reset controller support. Signed-off-by: Tomer Maimon <tmaimon77@gmail.com> Link: https://lore.kernel.org/r/20200115162301.235926-5-tmaimon77@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-01-17spi: npcm-pspi: improve spi transfer performanceTomer Maimon1-0/+7
Improving spi 8 bit per word mode transfer performance by using 16 bit per word transfer and receive when the data length is even and larger than one. Signed-off-by: Tomer Maimon <tmaimon77@gmail.com> Link: https://lore.kernel.org/r/20200115162301.235926-3-tmaimon77@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-01-17spi: npcm-pspi: fix 16 bit send and receive supportTomer Maimon1-8/+9
Fixing NPCM BMC Peripheral SPI controller 16 bit send and receive support by writing and reading the SPI data in the right order. Signed-off-by: Tomer Maimon <tmaimon77@gmail.com> Link: https://lore.kernel.org/r/20200115162301.235926-2-tmaimon77@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-10-09spi: npcm: Remove set but not used variable 'val'zhengbin1-2/+1
Fixes gcc '-Wunused-but-set-variable' warning: drivers/spi/spi-npcm-pspi.c: In function npcm_pspi_handler: drivers/spi/spi-npcm-pspi.c:296:6: warning: variable val set but not used [-Wunused-but-set-variable] It is not used since commit 2a22f1b30cee ("spi: npcm: add NPCM PSPI controller driver") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: zhengbin <zhengbin13@huawei.com> Link: https://lore.kernel.org/r/1570581437-104549-3-git-send-email-zhengbin13@huawei.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-09-04spi: npcm: use devm_platform_ioremap_resource() to simplify codeYueHaibing1-3/+1
Use devm_platform_ioremap_resource() to simplify the code a bit. This is detected by coccinelle. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: YueHaibing <yuehaibing@huawei.com> Link: https://lore.kernel.org/r/20190904135918.25352-20-yuehaibing@huawei.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-02spi: Remove dev_err() usage after platform_get_irq()Stephen Boyd1-1/+0
We don't need dev_err() messages when platform_get_irq() fails now that platform_get_irq() prints an error message itself when something goes wrong. Let's remove these prints with a simple semantic patch. // <smpl> @@ expression ret; struct platform_device *E; @@ ret = ( platform_get_irq(E, ...) | platform_get_irq_byname(E, ...) ); if ( \( ret < 0 \| ret <= 0 \) ) { ( -if (ret != -EPROBE_DEFER) -{ ... -dev_err(...); -... } | ... -dev_err(...); ) ... } // </smpl> While we're here, remove braces on if statements that only have one statement (manually). Cc: Mark Brown <broonie@kernel.org> Cc: linux-spi@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Stephen Boyd <swboyd@chromium.org> Link: https://lore.kernel.org/r/20190730181557.90391-42-swboyd@chromium.org Signed-off-by: Mark Brown <broonie@kernel.org>
2019-01-03spi: npcm-pspi: Fix wrong priv pointerAxel Lin1-1/+2
In npcm_pspi_probe(), current code set platform_set_drvdata(pdev, master); so in npcm_pspi_remove() platform_get_drvdata(pdev) will return pointer to master rather than priv. Fix it. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-12-06spi: npcm: Modify pspi send functionTomer Maimon1-6/+14
Align pspi send function code with the recieve function code, Also simplify the code a bit with early return. Signed-off-by: Tomer Maimon <tmaimon77@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-11-27spi: npcm: Fix uninitialized variable warningOlof Johansson1-7/+15
The compiler has no way to know that rsize 1 or 2 are the only valid values. Also simplify the code a bit with early return. The warning was: drivers/spi/spi-npcm-pspi.c:215:6: warning: 'val' may be used uninitialized in this function [-Wmaybe-uninitialized] Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-11-23spi: npcm: Fix an error code in the probe functionDan Carpenter1-1/+1
There is an IS_ERR() vs PTR_ERR() typo here. The current code returns 1 but we want to return the negative error code. Fixes: 2a22f1b30cee ("spi: npcm: add NPCM PSPI controller driver") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-11-15spi: npcm: fix platform_no_drv_owner.cocci warningskbuild test robot1-1/+0
drivers/spi/spi-npcm-pspi.c:470:3-8: No need to set .owner here. The core will do it. Remove .owner field if calls are used which set it automatically Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci Fixes: 2a22f1b30cee ("spi: npcm: add NPCM PSPI controller driver") CC: Tomer Maimon <tmaimon77@gmail.com> Signed-off-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-11-14spi: npcm: fix u32 csgpio being checked for less than zeroColin Ian King1-3/+3
The u32 variable csgpio is being checked for an error return from the call to of_get_named_gpio, however, since this is unsigned this comparison will always be false. Fix this by making csgpio an int and fix up the %u format specifiers to %d accordingly. Detected by CoverityScan, CID#1475476 ("Unsigned compared against 0") Fixes: 2a22f1b30cee ("spi: npcm: add NPCM PSPI controller driver") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-11-13spi: npcm: add NPCM PSPI controller driverTomer Maimon1-0/+480
Add Nuvoton NPCM BMC Peripheral SPI controller driver. Signed-off-by: Tomer Maimon <tmaimon77@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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