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path: root/drivers/spi/spi-sh-hspi.c
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2023-08-21spi: sh-hspi: switch to use modern nameYang Yingliang1-2/+2
Change legacy name master to modern name host. No functional changed. Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230818093154.1183529-19-yangyingliang@huawei.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-03-07spi: sh-hspi: Convert to platform remove callback returning voidUwe Kleine-König1-4/+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 <u.kleine-koenig@pengutronix.de> Link: https://lore.kernel.org/r/20230303172041.2103336-64-u.kleine-koenig@pengutronix.de Signed-off-by: Mark Brown <broonie@kernel.org>
2019-10-15spi: use new `spi_transfer_delay_exec` helper where straightforwardAlexandru Ardelean1-2/+1
For many places in the spi drivers, using the new `spi_transfer_delay` helper is straightforward. It's just replacing: ``` if (t->delay_usecs) udelay(t->delay_usecs); ``` with `spi_transfer_delay(t)` which handles both `delay_usecs` and the new `delay` field. This change replaces in all places (in the spi drivers) where this change is simple. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Link: https://lore.kernel.org/r/20190926105147.7839-10-alexandru.ardelean@analog.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-08spi: sh-hspi: Replace spi_master by spi_controllerGeert Uytterhoeven1-18/+18
As of commit 8caab75fd2c2a926 ('spi: Generalize SPI "master" to "controller"'), the old master-centric names are compatibility wrappers for the new controller-centric names. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-01-18spi: sh-hspi: Remove error messages on out-of-memory conditionsGeert Uytterhoeven1-4/+1
There is no need to print an error message when memory allocations or related operations fail, as the core will take care of that. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-08-28spi: use SPDX identifier for Renesas driversWolfram Sang1-10/+2
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-12-22spi: Remove FSF mailing addressesJarkko Nikula1-5/+0
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-10-20spi: drop owner assignment from platform_driversWolfram Sang1-1/+0
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-06-06spi: sh-hspi: Make of_device_id array constJingoo Han1-1/+1
Make of_device_id array const, because all OF functions handle it as const. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-04-15spi: sh-hspi: Do not specifically request shyway_clk clockSimon Horman1-2/+2
Rather than requesting the shyway_clk call clk_get with the device and a NULL con_id. This is in keeping with the way that clk_get() is called on other drivers used by Renesas Gen 1 SoCs. And I believe it is compatible with supplying clocks via DT, unlike the current code. It appears to me that the two uses of this driver are the r8a7778 and r8a7779 SoCs. The r8a7779 already has clocks setup to allow this driver to continue to work with this change applied. The r8a7778 has clocks incorrectly setup to allow this driver to continue to work with this change applied. This problem is addressed in "ARM: shmobile: r8a7778: Use clks as MSTP007 parent" which is thus a pre-requisite of this patch. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-30Merge remote-tracking branches 'spi/topic/s3c64xx', 'spi/topic/sc18is602', ↵Mark Brown1-35/+7
'spi/topic/sh-hspi', 'spi/topic/sh-msiof', 'spi/topic/sh-sci', 'spi/topic/sirf' and 'spi/topic/spidev' into spi-next
2014-03-11spi: sh-hspi: Add missing call to pm_runtime_disable() in failure pathGeert Uytterhoeven1-1/+3
Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-03spi: sh-hspi: Remove duplicate code to set default transfer speedAxel Lin1-7/+2
In the implementation of __spi_validate(), spi core will use spi device's max speed as default transfer speed if it is not set for this transfer. So we can remove the same logic in hspi_hw_setup(). Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-02-27spi: sh-hspi: Remove hspi_cleanup functionAxel Lin1-11/+0
hspi_cleanup() is doing nothing except print a non-useful debug message, so remove it. Also remove unused hspi2info macro. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-02-23spi: sh-hspi: Convert to let spi core validate bits_per_wordAxel Lin1-16/+2
Set bits_per_word_mask so spi core will reject transfers that attempt to use an unsupported bits_per_word value. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-02-16spi: Remove explictly set bus_num and num_chipselect to default settingAxel Lin1-1/+0
The purpose of commit 1e8a52e18cfb "spi: By default setup spi_masters with 1 chipselect and dynamics bus number" is to avoid setting default value for bus_num and num_chipselect in spi master drivers. So let's remove the duplicate code. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-By: David Daney <david.daney@cavium.com> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-23Merge remote-tracking branches 'spi/topic/fsl-espi', 'spi/topic/gpio', ↵Mark Brown1-1/+1
'spi/topic/hspi', 'spi/topic/mpc512x', 'spi/topic/msiof', 'spi/topic/nuc900', 'spi/topic/oc-tiny', 'spi/topic/omap', 'spi/topic/orion' and 'spi/topic/pci' into spi-linus
2014-01-13spi: sh-hspi: Spelling s/recive/receive/Geert Uytterhoeven1-1/+1
Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-08spi: sh-hspi: Fix modalias for sh-hspiAxel Lin1-1/+1
Make the modalias matches the driver name. Seems the MODULE_ALIAS is copied from drivers/spi/spi-sh-spi.c. So both spi-sh.ko and spi-sh-hspi.ko have the same alias. Fix it. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-10-25Merge remote-tracking branch 'spi/topic/hspi' into spi-nextMark Brown1-1/+9
2013-10-25Merge remote-tracking branch 'spi/topic/bfin' into spi-nextMark Brown1-2/+1
2013-10-25spi/hspi: add device tree supportKuninori Morimoto1-0/+8
Support for loading the Renesas HSPI driver via devicetree. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-10-15spi: sh-hspi: Fix checkpatch issueJingoo Han1-1/+1
Fix the following checkpatch warning. WARNING: space prohibited before semicolon Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-10-03spi/hspi: fixup Runtime PM enable timingKuninori Morimoto1-2/+2
3e00a09d2fbd64f0ad98e7c8c29dbf9e038fc746 (spi/hspi: Convert to core runtime PM) enabled master->auto_runtime_pm. Then, pm_runtime_enable() is required *before* spi_register_master() calling. This patch fixed it up. Kernel will hang up with "spi_master spi0: Failed to power device: -13" message without this patch. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-26spi: sh-hspi: use devm_spi_register_master()Jingoo Han1-2/+1
Use devm_spi_register_master() to make cleanup paths simpler. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-01Merge remote-tracking branch 'spi/topic/sh-hspi' into spi-nextMark Brown1-2/+0
2013-07-29spi/hspi: Convert to core runtime PMMark Brown1-17/+1
Signed-off-by: Mark Brown <broonie@linaro.org>
2013-07-28spi/sh-hspi: Remove noisy printMark Brown1-2/+0
This adds no meaningful value. Signed-off-by: Mark Brown <broonie@linaro.org>
2013-06-26Merge remote-tracking branch 'spi/topic/pdata' into spi-nextMark Brown1-2/+2
2013-06-04spi: hspi: fixup long delay timeKuninori Morimoto1-1/+1
Current HSPI driver is using msleep(20) on hspi_status_check_timeout(), but it was too long delay for SPI device. Bock-W board SPI access was too slow without this patch. This patch uses udelay(10) for it. Tested-by: Yusuke Goda <yusuke.goda.sx@renesas.com> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-05-23spi: use platform_{get,set}_drvdata()Jingoo Han1-2/+2
Use the wrapper functions for getting and setting the driver data using platform_device instead of using dev_{get,set}_drvdata() with &pdev->dev, so we can directly pass a struct platform_device. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-12-19spi/sh-hspi: fix return value check in hspi_probe().Cyril Roelandt1-1/+1
According to its documentation, clk_get() returns a "valid IS_ERR() condition containing errno", so we should call IS_ERR() rather than a NULL check. Signed-off-by: Cyril Roelandt <tipecaml@gmail.com> Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-12-07spi: Remove HOTPLUG section attributesGrant Likely1-3/+3
CONFIG_HOTPLUG is going away as an option. As result the __dev* markings will be going away. Remove use of __devinit, __devexit_p, __devinitdata, __devinitconst, and __devexit. Bill Pemberton has done most of the legwork on this series. I've used his script to purge the attributes from the drivers/gpio tree. Reported-by: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-11-23spi/sh-hspi: add CS manual control supportPhil Edworthy1-2/+41
The current HSPI driver used automatic CS control, leading to CS active for each byte transmitted. This patch changes the driver to manual CS control, and ensures CS is active thoughout a whole message. Additionally, it uses the cs_change field to determine if CS is disabled between transfers in the message. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-09-06spi: spi-sh-hspi: drop frees of devm_ alloc'd dataJulia Lawall1-4/+1
devm free functions should not have to be explicitly used. A semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ @@ ( * devm_kfree(...); | * devm_free_irq(...); | * devm_iounmap(...); | * devm_release_region(...); | * devm_release_mem_region(...); ) // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-03-15spi: sh-hspi: modify write/read methodKuninori Morimoto1-69/+24
Current sh-hspi had wrong write/read method which was not linux standard. If spi_transfer requests tx[2], rx[2] len=2, then, driver should run tx[0], rx[0], tx[1], rx[1]. But current sh-hspi runs tx[0], tx[1], rx[0], rx[1]. This patch fixes it up. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-15spi: sh-hspi: control spi clock more correctlyKuninori Morimoto1-16/+70
Current sh-hspi had used platform-specific speed. This patch remove it, and use spi_transfer specific speed. It removes unnecessary flags from struct sh_hspi_info, but struct sh_hspi_info is still exist, since sh-hspi needs platform info in the future. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-15spi: sh-hspi: convert to using core message queueKuninori Morimoto1-97/+55
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-09spi: Add SuperH HSPI prototype driverKuninori Morimoto1-0/+364
This patch adds SuperH HSPI driver. It is still prototype driver, but has enough function at this point. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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