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2018-08-29pinctrl: Convert to using %pOFn instead of device_node.nameRob Herring1-16/+16
In preparation to remove the node name pointer from struct device_node, convert printf users to use the %pOFn format specifier. Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Dong Aisheng <aisheng.dong@nxp.com> Cc: Fabio Estevam <festevam@gmail.com> Cc: Shawn Guo <shawnguo@kernel.org> Cc: Stefan Agner <stefan@agner.ch> Cc: Pengutronix Kernel Team <kernel@pengutronix.de> Cc: Sean Wang <sean.wang@mediatek.com> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Carlo Caione <carlo@caione.org> Cc: Kevin Hilman <khilman@baylibre.com> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Gregory Clement <gregory.clement@bootlin.com> Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com> Cc: Nicolas Ferre <nicolas.ferre@microchip.com> Cc: Alexandre Belloni <alexandre.belloni@bootlin.com> Cc: Heiko Stuebner <heiko@sntech.de> Cc: Tony Lindgren <tony@atomide.com> Cc: Haojian Zhuang <haojian.zhuang@linaro.org> Cc: Patrice Chotard <patrice.chotard@st.com> Cc: Barry Song <baohua@kernel.org> Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com> Cc: Alexandre Torgue <alexandre.torgue@st.com> Cc: Maxime Ripard <maxime.ripard@bootlin.com> Cc: Chen-Yu Tsai <wens@csie.org> Cc: linux-gpio@vger.kernel.org Cc: linux-mediatek@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-amlogic@lists.infradead.org Cc: linux-rockchip@lists.infradead.org Cc: linux-omap@vger.kernel.org Acked-by: Dong Aisheng <aisheng.dong@nxp.com> Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Sean Wang <sean.wang@mediatek.com> Acked-by: Chen-Yu Tsai <wens@csie.org> Acked-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-08-14Merge tag 'pinctrl-v4.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlLinus Torvalds1-54/+73
Pull pin control updates from Linus Walleij: "This is the bulk of pin control changes for v4.19: Core changes: - Augment pinctrl_generic_add_group() and pinmux_generic_add_function() to return the selector for the added group/function to the caller and augment (hopefully) all drivers to handle this New subdrivers: - Qualcomm PM8998 and PM8005 are supported in the SPMI pin control and GPIO driver - Intel Ice Lake PCH (platform controller hub) support - NXP (ex Freescale) i.MX8MQ support - Berlin AS370 support Improvements to drivers: - Support interrupts on the Ocelot pin controller - Add SPI pins to the Uniphier driver - Define a GPIO compatible per SoC in the Tegra driver - Push Tegra initialization down in the initlevels - Support external wakeup interrupts on the Exynos - Add generic clocks pins to the meson driver - Add USB and HSCIF pins for some Renesas PFC chips - Suspend/resume support in the armada-37xx - Interrupt support for the Actions Semiconductor S900 also known as "owl" - Correct the pin ordering in Cedarfork - Debugfs output for INTF in the mcp23s08 driver - Avoid divisions in context save/restore in pinctrl-single The rest is minor bug fixes or cleanups" * tag 'pinctrl-v4.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (69 commits) pinctrl: nomadik: silence uninitialized variable warning pinctrl: axp209: Fix NULL pointer dereference after allocation pinctrl: samsung: Remove duplicated "wakeup" in printk pinctrl: ocelot: add support for interrupt controller pinctrl: intel: Don't shadow error code of gpiochip_lock_as_irq() pinctrl: berlin: fix 'pctrl->functions' allocation in berlin_pinctrl_build_state gpio: tegra: Move driver registration to subsys_init level pinctrl: tegra: Move drivers registration to arch_init level pinctrl: baytrail: actually print the apparently misconfigured pin MAINTAINERS: Replace Heikki as maintainer of Intel pinctrl pinctrl: freescale: off by one in imx1_pinconf_group_dbg_show() pinctrl: uniphier: add spi pin-mux settings pinctrl: cannonlake: Fix community ordering for H variant pinctrl: tegra: define GPIO compatible node per SoC pinctrl: intel: Do pin translation when lock IRQ pinctrl: imx: off by one in imx_pinconf_group_dbg_show() pinctrl: mediatek: include chained_irq.h header pinctrl/amd: only handle irq if it is pending and unmasked pinctrl/amd: fix gpio irq level in debugfs pinctrl: stm32: add syscfg mask parameter ...
2018-07-17pinctrl: single: Fix missing unlock on error pathWei Yongjun1-2/+2
Add the missing unlock before return from function in the error handling case. Fixes: 0f5972033509 ("pinctrl: single: Fix group and function selector use") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-07-17pinctrl: single: Fix group and function selector useTony Lindgren1-36/+55
We must use a mutex around the generic_add functions and save the function and group selector in case we need to remove them. Otherwise the selector use will be racy for deferred probe at least. Note that struct device_node *np is unused in pcs_add_function() we remove that too and fix a checkpatch warning for bare unsigned while at it. Fixes: 571aec4df5b7 ("pinctrl: single: Use generic pinmux helpers for managing functions") Reported-by: H. Nikolaus Schaller <hns@goldelico.com> Cc: Christ van Willegen <cvwillegen@gmail.com> Cc: Haojian Zhuang <haojian.zhuang@linaro.org> Cc: Jacopo Mondi <jacopo+renesas@jmondi.org> Cc: Paul Cercueil <paul@crapouillou.net> Cc: Sean Wang <sean.wang@mediatek.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Tested-By: H. Nikolaus Schaller <hns@goldelico.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-06-18pinctrl: pinctrl-single: Avoid divisions in context save/restoreGeert Uytterhoeven1-18/+18
The divisions (and multiplications) can be avoided by changing the loops to use increments of mux_bytes instead of 1. While at it, remove the unneeded casts when assigning void pointers. This saves +100 bytes of kernel size on arm32/arm64. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Tony Lindgren <tony@atomide.com> Tested-by: Keerthy <j-keerthy@ti.com> Reviewed-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-06-18pinctrl: single: Add allocation failure checking of saved_valsColin Ian King1-3/+11
Currently saved_vals is being allocated and there is no check for failed allocation (which is more likely than normal when using GFP_ATOMIC). Fix this by checking for a failed allocation and propagating this error return down the the caller chain. Detected by CoverityScan, CID#1469841 ("Dereference null return value") Fixes: 88a1dbdec682 ("pinctrl: pinctrl-single: Add functions to save and restore pinctrl context") Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Johan Hovold <johan@kernel.org> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-06-12treewide: devm_kzalloc() -> devm_kcalloc()Kees Cook1-12/+14
The devm_kzalloc() function has a 2-factor argument form, devm_kcalloc(). This patch replaces cases of: devm_kzalloc(handle, a * b, gfp) with: devm_kcalloc(handle, a * b, gfp) as well as handling cases of: devm_kzalloc(handle, a * b * c, gfp) with: devm_kzalloc(handle, array3_size(a, b, c), gfp) as it's slightly less ugly than: devm_kcalloc(handle, array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: devm_kzalloc(handle, 4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. Some manual whitespace fixes were needed in this patch, as Coccinelle really liked to write "=devm_kcalloc..." instead of "= devm_kcalloc...". The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ expression HANDLE; type TYPE; expression THING, E; @@ ( devm_kzalloc(HANDLE, - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | devm_kzalloc(HANDLE, - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression HANDLE; expression COUNT; typedef u8; typedef __u8; @@ ( devm_kzalloc(HANDLE, - sizeof(u8) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(__u8) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(char) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(unsigned char) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(u8) * COUNT + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(__u8) * COUNT + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(char) * COUNT + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ expression HANDLE; type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ expression HANDLE; identifier SIZE, COUNT; @@ - devm_kzalloc + devm_kcalloc (HANDLE, - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression HANDLE; expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( devm_kzalloc(HANDLE, - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression HANDLE; expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ expression HANDLE; identifier STRIDE, SIZE, COUNT; @@ ( devm_kzalloc(HANDLE, - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression HANDLE; expression E1, E2, E3; constant C1, C2, C3; @@ ( devm_kzalloc(HANDLE, C1 * C2 * C3, ...) | devm_kzalloc(HANDLE, - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | devm_kzalloc(HANDLE, - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | devm_kzalloc(HANDLE, - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | devm_kzalloc(HANDLE, - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression HANDLE; expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( devm_kzalloc(HANDLE, sizeof(THING) * C2, ...) | devm_kzalloc(HANDLE, sizeof(TYPE) * C2, ...) | devm_kzalloc(HANDLE, C1 * C2 * C3, ...) | devm_kzalloc(HANDLE, C1 * C2, ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - (E1) * E2 + E1, E2 , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - (E1) * (E2) + E1, E2 , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
2018-05-23pinctrl: pinctrl-single: Add functions to save and restore pinctrl contextKeerthy1-1/+71
This adds a pair of context save/restore functions to save/restore the state of a set of pinctrl registers. The context is lost during rtc only suspend with ddr in self-refresh on am43xx. Currently the save/restore is being done unconditionally. This will be optimized later with a pdata-quirk function which will allow is to save/restore only when doing the rtc only mode with ddr in self refresh. Signed-off-by: Keerthy <j-keerthy@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-03-26pinctrl: pinctrl-single: Fix pcs_request_gpio() when bits_per_mux != 0David Lechner1-3/+19
This fixes pcs_request_gpio() in the pinctrl-single driver when bits_per_mux != 0. It appears this was overlooked when the multiple pins per register feature was added. Fixes: 4e7e8017a80e ("pinctrl: pinctrl-single: enhance to configure multiple pins of different modules") Signed-off-by: David Lechner <david@lechnology.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-02-02Merge tag 'pinctrl-v4.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlLinus Torvalds1-7/+3
Pull pin control updates from Linus Walleij: "This is the bulk of pin control changes for the v4.16 kernel cycle. Like with GPIO it is actually a bit calm this time. Core changes: - After lengthy discussions and partly due to my ignorance, we have merged a patch making pinctrl_force_default() and pinctrl_force_sleep() reprogram the states into the hardware of any hogged pins, even if they are already in the desired state. This only apply to hogged pins since groups of pins owned by drivers need to be managed by each driver, lest they could not do things like runtime PM and put pins to sleeping state even if the system as a whole is not in sleep. New drivers: - New driver for the Microsemi Ocelot SoC. This is used in ethernet switches. - The X-Powers AXP209 GPIO driver was extended to also deal with pin control and moved over from the GPIO subsystem. This circuit is a mixed-mode integrated circuit which is part of AllWinner designs. - New subdriver for the Qualcomm MSM8998 SoC, core of a high end mobile devices (phones) chipset. - New subdriver for the ST Microelectronics STM32MP157 MPU and STM32F769 MCU from the STM32 family. - New subdriver for the MediaTek MT7622 SoC. This is used for routers, repeater, gateways and such network infrastructure. - New subdriver for the NXP (former Freescale) i.MX 6ULL. This SoC has multimedia features and target "smart devices", I guess in-car entertainment, in-flight entertainment, industrial control panels etc. General improvements: - Incremental improvements on the SH-PFC subdrivers for things like the CAN bus. - Enable the glitch filter on Baytrail GPIOs used for interrupts. - Proper handling of pins to GPIO ranges on the Semtec SX150X - An IRQ setup ordering fix on MCP23S08. - A good set of janitorial coding style fixes" * tag 'pinctrl-v4.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (102 commits) pinctrl: mcp23s08: fix irq setup order pinctrl: Forward declare struct device pinctrl: sunxi: Use of_clk_get_parent_count() instead of open coding pinctrl: stm32: add STM32F769 MCU support pinctrl: sx150x: Add a static gpio/pinctrl pin range mapping pinctrl: sx150x: Register pinctrl before adding the gpiochip pinctrl: sx150x: Unregister the pinctrl on release pinctrl: ingenic: Remove redundant dev_err call in ingenic_pinctrl_probe() pinctrl: sprd: Use seq_putc() in sprd_pinconf_group_dbg_show() pinctrl: pinmux: Use seq_putc() in pinmux_pins_show() pinctrl: abx500: Use seq_putc() in abx500_gpio_dbg_show() pinctrl: mediatek: mt7622: align error handling of mtk_hw_get_value call pinctrl: mediatek: mt7622: fix potential uninitialized value being returned pinctrl: uniphier: refactor drive strength get/set functions pinctrl: imx7ulp: constify struct imx_cfg_params_decode pinctrl: imx: constify struct imx_pinctrl_soc_info pinctrl: imx7d: simplify imx7d_pinctrl_probe pinctrl: imx: use struct imx_pinctrl_soc_info as a const pinctrl: sunxi-pinctrl: fix pin funtion can not be match correctly. pinctrl: qcom: Add msm8998 pinctrl driver ...
2018-01-03pinctrl: single: Delete an unnecessary return statement in pcs_irq_chain_handler()Markus Elfring1-2/+0
The script "checkpatch.pl" pointed information out like the following. WARNING: void function return statements are not generally useful Thus remove such a statement in the affected function. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-01-03pinctrl: single: Delete an error message for a failed memory allocation in pcs_probe()Markus Elfring1-3/+2
Omit an extra message for a memory allocation failure in this function. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-12-28kernel/irq: Extend lockdep class for request mutexAndrew Lunn1-1/+4
The IRQ code already has support for lockdep class for the lock mutex in an interrupt descriptor. Extend this to add a second class for the request mutex in the descriptor. Not having a class is resulting in false positive splats in some code paths. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: linus.walleij@linaro.org Cc: grygorii.strashko@ti.com Cc: f.fainelli@gmail.com Link: https://lkml.kernel.org/r/1512234664-21555-1-git-send-email-andrew@lunn.ch
2017-12-20pinctrl: single: Remove invalid messageTony Lindgren1-2/+1
Pinctrl single should just show how many pins were found, the physical address is already in the dev information. So let's remove the wrong information that claims to show the physical address but really prints a virtual address that is now hashed. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-09-21pinctrl: single: make two arrays static const, reduces object code sizeColin Ian King1-2/+2
Don't populate the read-only arrays prop2 and prop4 on the stack, instead make them static const. Makes the object code smaller by over 230 bytes: Before: text data bss dec hex filename 28235 5820 192 34247 85c7 drivers/pinctrl/pinctrl-single.o After: text data bss dec hex filename 27839 5980 192 34011 84db drivers/pinctrl/pinctrl-single.o Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-29pinctrl: single: use of_device_get_match_data() to get soc dataMasahiro Yamada1-6/+2
Use of_device_get_match_data() instead of of_match_device(). It allows us to remove the forward declaration of pcs_of_match. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-04-07pinctrl: core: Fix pinctrl_register_and_init() with pinctrl_enable()Tony Lindgren1-1/+1
Recent pinctrl changes to allow dynamic allocation of pins exposed one more issue with the pinctrl pins claimed early by the controller itself. This caused a regression for IMX6 pinctrl hogs. Before enabling the pin controller driver we need to wait until it has been properly initialized, then claim the hogs, and only then enable it. To fix the regression, split the code into pinctrl_claim_hogs() and pinctrl_enable(). And then let's require that pinctrl_enable() is always called by the pin controller driver when ready after calling pinctrl_register_and_init(). Depends-on: 950b0d91dc10 ("pinctrl: core: Fix regression caused by delayed work for hogs") Fixes: df61b366af26 ("pinctrl: core: Use delayed work for hogs") Fixes: e566fc11ea76 ("pinctrl: imx: use generic pinctrl helpers for managing groups") Cc: Haojian Zhuang <haojian.zhuang@linaro.org> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Mika Penttilä <mika.penttila@nextfour.com> Cc: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: Nishanth Menon <nm@ti.com> Cc: Shawn Guo <shawnguo@kernel.org> Cc: Stefan Agner <stefan@agner.ch> Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Tested-by: Gary Bisson <gary.bisson@boundarydevices.com> Tested-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-01-26Merge branch 'ib-pinctrl-genprops' into develLinus Walleij1-1/+1
2017-01-26pinctrl: Widen the generic pinconf argument from 16 to 24 bitsMika Westerberg1-1/+1
The current pinconf packed format allows only 16-bit argument limiting the maximum value 65535. For most types this is enough. However, debounce time can be in range of hundreths of milliseconds in case of mechanical switches so we cannot represent the worst case using the current format. In order to support larger values change the packed format so that the lower 8 bits are used as type which leaves 24 bits for the argument. This allows representing values up to 16777215 and debounce times up to 16 seconds. We also convert the existing users to use 32-bit integer when extracting argument from the packed configuration value. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-01-13pinctrl: core: Fix regression caused by delayed work for hogsTony Lindgren1-3/+2
Commit df61b366af26 ("pinctrl: core: Use delayed work for hogs") caused a regression at least with sh-pfc that is also a GPIO controller as noted by Geert Uytterhoeven <geert@linux-m68k.org>. As the original pinctrl_register() has issues calling pin controller driver functions early before the controller has finished registering, we can't just revert commit df61b366af26. That would break the drivers using GENERIC_PINCTRL_GROUPS or GENERIC_PINMUX_FUNCTIONS. So let's fix the issue with the following steps as a single patch: 1. Revert the late_init parts of commit df61b366af26. The late_init clearly won't work and we have to just give up on fixing pinctrl_register() for GENERIC_PINCTRL_GROUPS and GENERIC_PINMUX_FUNCTIONS. 2. Split pinctrl_register() into two parts By splitting pinctrl_register() into pinctrl_init_controller() and pinctrl_create_and_start() we have better control over when it's safe to call pinctrl_create(). 3. Introduce a new pinctrl_register_and_init() function As suggested by Linus Walleij <linus.walleij@linaro.org>, we can just introduce a new function for the controllers that need pinctrl_create() called later. 4. Convert the four known problem cases to use new function Let's convert pinctrl-imx, pinctrl-single, sh-pfc and ti-iodelay to use the new function to fix the issues. The rest of the drivers can be converted later. Let's also update Documentation/pinctrl.txt accordingly because of the known issues with pinctrl_register(). Fixes: df61b366af26 ("pinctrl: core: Use delayed work for hogs") Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Gary Bisson <gary.bisson@boundarydevices.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-01-03pinctrl: single: Use generic pinmux helpers for managing functionsTony Lindgren1-116/+18
We can now drop the driver specific code for managing functions. Signed-off-by: Tony Lindgren <tony@atomide.com> [Replaces GENERIC_PINMUX with GENERIC_PINMUX_FUNCTIONS] Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-01-03pinctrl: single: Use generic pinctrl helpers for managing groupsTony Lindgren1-145/+11
We can now drop the driver specific code for managing groups. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-12-30pinctrl: single: fix spelling mistakes on "Ivalid"Colin Ian King1-1/+1
Trivial fixe to spelling mistake "Ivalid" to "Invalid" in dev_err error message. Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-11-16pinctrl: single: Fix a couple error codesDan Carpenter1-2/+6
We should return -ENOMEM instead of success if pcs_add_function() fails. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-11-11pinctrl: single: search for the bits property when parsing bitsAxel Haslam1-1/+1
The pcs_parse_bits_in_pinctrl_entry function should search for the "pinctrl-single,bits" and not "pinctrl-single,pins" Signed-off-by: Axel Haslam <ahaslam@baylibre.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-11-11pinctrl: single: check for any error when getting rowsAxel Haslam1-4/+8
pinctrl_count_index_with_args returns -ENOENT not -EINVAL. The return check would pass, and we would try to kzalloc with a negative error size throwing a warning. Instead of checking for -EINVAL specifically, lets check for any error and avoid negative size allocations. Signed-off-by: Axel Haslam <ahaslam@baylibre.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-11-04pinctrl: single: Use generic parser and #pinctrl-cells for pinctrl-single,bitsTony Lindgren1-24/+24
We can now use generic parser and keep things compatible with the old binding. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-11-04pinctrl: single: Use generic parser and #pinctrl-cells for pinctrl-single,pinsTony Lindgren1-18/+93
We can now use generic parser. To support the legacy binding without #pinctrl-cells, add pcs_quirk_missing_pinctrl_cells() and warn about missing #pinctrl-cells. Let's also update the documentation for struct pcs_soc_data while at it as that seems to be out of date. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-10-28pinctrl: single: Drop pointless macroTony Lindgren1-11/+7
This is left over from initial experiments with more properties. It's only used in one place, so let's just get rid of it to make the code more readable. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-10-28pinctrl: single: Drop custom namesTony Lindgren1-30/+6
>From tony Mon Sep 17 00:00:00 2001 From: Tony Lindgren <tony@atomide.com> Date: Tue, 25 Oct 2016 08:33:34 -0700 Subject: [PATCHv2] pinctrl: single: Drop custom names We no longer need to allocate custom names as those are dynamically generated in pinctrl_register_one_pin() if no name is passed to pinctrl_register_pins(). Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-06-22pinctrl: single: Fix missing flush of posted write for a wakeirqTony Lindgren1-0/+3
With many repeated suspend resume cycles, the pin specific wakeirq may not always work on omaps. This is because the write to enable the pin interrupt may not have reached the device over the interconnect before suspend happens. Let's fix the issue with a flush of posted write with a readback. Cc: stable@vger.kernel.org Reported-by: Nishanth Menon <nm@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-04-15pinctrl: single: Fix pcs_parse_bits_in_pinctrl_entry to use __ffs than ffsKeerthy1-3/+3
pcs_parse_bits_in_pinctrl_entry uses ffs which gives bit indices ranging from 1 to MAX. This leads to a corner case where we try to request the pin number = MAX and fails. bit_pos value is being calculted using ffs. pin_num_from_lsb uses bit_pos value. pins array is populated with: pin + pin_num_from_lsb. The above is 1 more than usual bit indices as bit_pos uses ffs to compute first set bit. Hence the last of the pins array is populated with the MAX value and not MAX - 1 which causes error when we call pin_request. mask_pos is rightly calculated as ((pcs->fmask) << (bit_pos - 1)) Consequently val_pos and submask are correct. Hence use __ffs which gives (ffs(x) - 1) as the first bit set. fixes: 4e7e8017a8 ("pinctrl: pinctrl-single: enhance to configure multiple pins of different modules") Signed-off-by: Keerthy <j-keerthy@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-03-11pinctrl: single: Use a separate lockdep classSudeep Holla1-0/+8
The single pinmux controller can be cascaded to the other interrupt controllers. Hence when propagating wake-up settings to its parent interrupt controller, there's possiblity of detecting possible recursive locking and getting lockdep warning. This patch avoids this false positive by using a separate lockdep class for this single pinctrl interrupts. Cc: linux-gpio@vger.kernel.org Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-17pinctrl: Delete unnecessary checksMarkus Elfring1-4/+1
The pinctrl_unregister() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-09-16genirq: Remove irq argument from irq flow handlersThomas Gleixner1-1/+1
Most interrupt flow handlers do not use the irq argument. Those few which use it can retrieve the irq number from the irq descriptor. Remove the argument. Search and replace was done with coccinelle and some extra helper scripts around it. Thanks to Julia for her help! Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Jiang Liu <jiang.liu@linux.intel.com>
2015-09-04Merge tag 'pinctrl-v4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlLinus Torvalds1-10/+4
Pull pin control updates from Linus Walleij: "This is the bulk of pin control changes for the v4.3 development cycle. Like with GPIO it's a lot of stuff. If my subsystems are any sign of the overall tempo of the kernel v4.3 will be a gigantic diff. [ It looks like 4.3 is calmer than 4.2 in most other subsystems, but we'll see - Linus ] Core changes: - It is possible configure groups in debugfs. - Consolidation of chained IRQ handler install/remove replacing all call sites where irq_set_handler_data() and irq_set_chained_handler() were done in succession with a combined call to irq_set_chained_handler_and_data(). This series was created by Thomas Gleixner after the problem was observed by Russell King. - Tglx also made another series of patches switching __irq_set_handler_locked() for irq_set_handler_locked() which is way cleaner. - Tglx also wrote a good bunch of patches to make use of irq_desc_get_xxx() accessors and avoid looking up irq_descs from IRQ numbers. The goal is to get rid of the irq number from the handlers in the IRQ flow which is nice. Driver feature enhancements: - Power management support for the SiRF SoC Atlas 7. - Power down support for the Qualcomm driver. - Intel Cherryview and Baytrail: switch drivers to use raw spinlocks in IRQ handlers to play nice with the realtime patch set. - Rework and new modes handling for Qualcomm SPMI-MPP. - Pinconf power source config for SH PFC. New drivers and subdrivers: - A new driver for Conexant Digicolor CX92755. - A new driver for UniPhier PH1-LD4, PH1-Pro4, PH1-sLD8, PH1-Pro5, ProXtream2 and PH1-LD6b SoC pin control support. - Reverse-egineered the S/PDIF settings for the Allwinner sun4i driver. - Support for Qualcomm Technologies QDF2xxx ARM64 SoCs - A new Freescale i.mx6ul subdriver. Cleanup: - Remove platform data support in a number of SH PFC subdrivers" * tag 'pinctrl-v4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (95 commits) pinctrl: at91: fix null pointer dereference pinctrl: mediatek: Implement wake handler and suspend resume pinctrl: mediatek: Fix multiple registration issue. pinctrl: sh-pfc: r8a7794: add USB pin groups pinctrl: at91: Use generic irq_{request,release}_resources() pinctrl: cherryview: Use raw_spinlock for locking pinctrl: baytrail: Use raw_spinlock for locking pinctrl: imx6ul: Remove .owner field pinctrl: zynq: Fix typos in smc0_nand_grp and smc0_nor_grp pinctrl: sh-pfc: Implement pinconf power-source param for voltage switching clk: rockchip: add pclk_pd_pmu to the list of rk3288 critical clocks pinctrl: sun4i: add spdif to pin description. pinctrl: atlas7: clear ugly branch statements for pull and drivestrength pinctrl: baytrail: Serialize all register access pinctrl: baytrail: Drop FSF mailing address pinctrl: rockchip: only enable gpio clock when it setting pinctrl/mediatek: fix spelling mistake in dev_err error message pinctrl: cherryview: Serialize all register access pinctrl: UniPhier: PH1-Pro5: add I2C ch6 pin-mux setting pinctrl: nomadik: reflect current input value ...
2015-07-28pinctrl: kill off set_irq_flags usageRob Herring1-5/+0
set_irq_flags is ARM specific with custom flags which have genirq equivalents. Convert drivers to use the genirq interfaces directly, so we can kill off set_irq_flags. The translation of flags is as follows: IRQF_VALID -> !IRQ_NOREQUEST IRQF_PROBE -> !IRQ_NOPROBE IRQF_NOAUTOEN -> IRQ_NOAUTOEN For IRQs managed by an irqdomain, the irqdomain core code handles clearing and setting IRQ_NOREQUEST already, so there is no need to do this in .map() functions and we can simply remove the set_irq_flags calls. Some users also modify IRQ_NOPROBE and this has been maintained although it is not clear that is really needed. There appears to be a great deal of blind copy and paste of this code. Signed-off-by: Rob Herring <robh@kernel.org> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Lee Jones <lee@kernel.org> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Tomasz Figa <tomasz.figa@gmail.com> Cc: Thomas Abraham <thomas.abraham@linaro.org> Cc: Kukjin Kim <kgene@kernel.org> Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: linux-gpio@vger.kernel.org Cc: linux-rpi-kernel@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mediatek@lists.infradead.org Cc: linux-samsung-soc@vger.kernel.org Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-07-20pinctrl: single: ensure pcs irq will not be forced threadedGrygorii Strashko1-1/+2
The PSC IRQ is requested using request_irq() API and as result it can be forced to be threaded IRQ in RT-Kernel if PCS_QUIRK_HAS_SHARED_IRQ is enabled for pinctrl domain. As result, following 'possible irq lock inversion dependency' report can be seen: ========================================================= [ INFO: possible irq lock inversion dependency detected ] 3.14.43-rt42-00360-g96ff499-dirty #24 Not tainted --------------------------------------------------------- irq/369-pinctrl/927 just changed the state of lock: (&pcs->lock){+.....}, at: [<c0375b54>] pcs_irq_handle+0x48/0x9c but this lock was taken by another, HARDIRQ-safe lock in the past: (&irq_desc_lock_class){-.....} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&pcs->lock); local_irq_disable(); lock(&irq_desc_lock_class); lock(&pcs->lock); <Interrupt> lock(&irq_desc_lock_class); *** DEADLOCK *** no locks held by irq/369-pinctrl/927. the shortest dependencies between 2nd lock and 1st lock: -> (&irq_desc_lock_class){-.....} ops: 58724 { IN-HARDIRQ-W at: [<c0090040>] lock_acquire+0x9c/0x158 [<c07065c8>] _raw_spin_lock+0x48/0x58 [<c009edac>] handle_fasteoi_irq+0x24/0x15c [<c009abb0>] generic_handle_irq+0x3c/0x4c [<c000f83c>] handle_IRQ+0x50/0xa0 [<c0008674>] gic_handle_irq+0x3c/0x6c [<c0707a04>] __irq_svc+0x44/0x8c [<c000fc44>] arch_cpu_idle+0x40/0x4c [<c009aadc>] cpu_startup_entry+0x270/0x2e0 [<c06fcbf8>] rest_init+0xd4/0xe4 [<c0a44bfc>] start_kernel+0x3d0/0x3dc [<80008084>] 0x80008084 INITIAL USE at: [<c0090040>] lock_acquire+0x9c/0x158 [<c070674c>] _raw_spin_lock_irqsave+0x54/0x68 [<c009aff8>] __irq_get_desc_lock+0x64/0xa4 [<c009e38c>] irq_set_chip+0x30/0x78 [<c009ec30>] irq_set_chip_and_handler_name+0x24/0x3c [<c036ca10>] gic_irq_domain_map+0x48/0xb4 [<c00a0a80>] irq_domain_associate+0x84/0x1d4 [<c00a1154>] irq_create_mapping+0x80/0x11c [<c00a1270>] irq_create_of_mapping+0x80/0x120 [<c05cdaa8>] irq_of_parse_and_map+0x34/0x3c [<c0a4ea24>] omap_dm_timer_init_one+0x90/0x30c [<c0a4eef0>] omap5_realtime_timer_init+0x8c/0x48c [<c0a486b0>] time_init+0x28/0x38 [<c0a44a6c>] start_kernel+0x240/0x3dc [<80008084>] 0x80008084 } ... key at: [<c1049ce0>] irq_desc_lock_class+0x0/0x8 ... acquired at: [<c07065c8>] _raw_spin_lock+0x48/0x58 [<c0375a90>] pcs_irq_unmask+0x58/0xa0 [<c009ea48>] irq_enable+0x38/0x48 [<c009ead0>] irq_startup+0x78/0x7c [<c009d440>] __setup_irq+0x4a8/0x4f4 [<c009d5dc>] request_threaded_irq+0xb8/0x138 [<c0415a5c>] omap_8250_startup+0x4c/0x148 [<c041276c>] serial8250_startup+0x24/0x30 [<c040d0ec>] uart_startup.part.9+0x5c/0x1b4 [<c040dbcc>] uart_open+0xf4/0x16c [<c03f0540>] tty_open+0x170/0x61c [<c0157028>] chrdev_open+0xbc/0x1b4 [<c0150494>] do_dentry_open+0x1e8/0x2bc [<c0150a84>] finish_open+0x44/0x5c [<c0160d50>] do_last.isra.47+0x710/0xca0 [<c01613a4>] path_openat+0xc4/0x640 [<c0162904>] do_filp_open+0x3c/0x98 [<c0151bdc>] do_sys_open+0x114/0x1d8 [<c0151cc8>] SyS_open+0x28/0x2c [<c0a44d70>] kernel_init_freeable+0x168/0x1e4 [<c06fcc24>] kernel_init+0x1c/0xf8 [<c000eee8>] ret_from_fork+0x14/0x20 -> (&pcs->lock){+.....} ops: 65 { HARDIRQ-ON-W at: [<c0090040>] lock_acquire+0x9c/0x158 [<c07065c8>] _raw_spin_lock+0x48/0x58 [<c0375b54>] pcs_irq_handle+0x48/0x9c [<c0375c5c>] pcs_irq_handler+0x1c/0x28 [<c009c458>] irq_forced_thread_fn+0x30/0x74 [<c009c784>] irq_thread+0x158/0x1c4 [<c0063fc4>] kthread+0xd4/0xe8 [<c000eee8>] ret_from_fork+0x14/0x20 INITIAL USE at: [<c0090040>] lock_acquire+0x9c/0x158 [<c070674c>] _raw_spin_lock_irqsave+0x54/0x68 [<c0375344>] pcs_enable+0x7c/0xe8 [<c0372a44>] pinmux_enable_setting+0x178/0x220 [<c036fecc>] pinctrl_select_state+0x110/0x194 [<c04732dc>] pinctrl_bind_pins+0x7c/0x108 [<c045853c>] driver_probe_device+0x70/0x254 [<c0458810>] __driver_attach+0x9c/0xa0 [<c045674c>] bus_for_each_dev+0x78/0xac [<c0458030>] driver_attach+0x2c/0x30 [<c0457c78>] bus_add_driver+0x15c/0x204 [<c0458ee0>] driver_register+0x88/0x108 [<c045a168>] __platform_driver_register+0x64/0x6c [<c0a8170c>] omap_hsmmc_driver_init+0x1c/0x20 [<c0008a94>] do_one_initcall+0x110/0x170 [<c0a44d48>] kernel_init_freeable+0x140/0x1e4 [<c06fcc24>] kernel_init+0x1c/0xf8 [<c000eee8>] ret_from_fork+0x14/0x20 } ... key at: [<c1088a8c>] __key.18572+0x0/0x8 ... acquired at: [<c008cdd4>] mark_lock+0x388/0x76c [<c008df40>] __lock_acquire+0x6d0/0x1f98 [<c0090040>] lock_acquire+0x9c/0x158 [<c07065c8>] _raw_spin_lock+0x48/0x58 [<c0375b54>] pcs_irq_handle+0x48/0x9c [<c0375c5c>] pcs_irq_handler+0x1c/0x28 [<c009c458>] irq_forced_thread_fn+0x30/0x74 [<c009c784>] irq_thread+0x158/0x1c4 [<c0063fc4>] kthread+0xd4/0xe8 [<c000eee8>] ret_from_fork+0x14/0x20 stack backtrace: CPU: 1 PID: 927 Comm: irq/369-pinctrl Not tainted 3.14.43-rt42-00360-g96ff499-dirty #24 [<c00177e0>] (unwind_backtrace) from [<c00130b0>] (show_stack+0x20/0x24) [<c00130b0>] (show_stack) from [<c0702958>] (dump_stack+0x84/0xd0) [<c0702958>] (dump_stack) from [<c008bcfc>] (print_irq_inversion_bug+0x1d0/0x21c) [<c008bcfc>] (print_irq_inversion_bug) from [<c008bf18>] (check_usage_backwards+0xb4/0x11c) [<c008bf18>] (check_usage_backwards) from [<c008cdd4>] (mark_lock+0x388/0x76c) [<c008cdd4>] (mark_lock) from [<c008df40>] (__lock_acquire+0x6d0/0x1f98) [<c008df40>] (__lock_acquire) from [<c0090040>] (lock_acquire+0x9c/0x158) [<c0090040>] (lock_acquire) from [<c07065c8>] (_raw_spin_lock+0x48/0x58) [<c07065c8>] (_raw_spin_lock) from [<c0375b54>] (pcs_irq_handle+0x48/0x9c) [<c0375b54>] (pcs_irq_handle) from [<c0375c5c>] (pcs_irq_handler+0x1c/0x28) [<c0375c5c>] (pcs_irq_handler) from [<c009c458>] (irq_forced_thread_fn+0x30/0x74) [<c009c458>] (irq_forced_thread_fn) from [<c009c784>] (irq_thread+0x158/0x1c4) [<c009c784>] (irq_thread) from [<c0063fc4>] (kthread+0xd4/0xe8) [<c0063fc4>] (kthread) from [<c000eee8>] (ret_from_fork+0x14/0x20) To fix it use IRQF_NO_THREAD to ensure that pcs irq will not be forced threaded. Cc: Tony Lindgren <tony@atomide.com> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-07-17pinctrl: Use irq_desc_get_xxx() to avoid redundant lookup of irq_descJiang Liu1-1/+1
Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc while we already have a pointer to corresponding irq_desc. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-gpio@vger.kernel.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-07-17pinctrl: Consolidate chained IRQ handler install/removeThomas Gleixner1-3/+3
Chained irq handlers usually set up handler data as well. We now have a function to set both under irq_desc->lock. Replace the two calls with one. Search and conversion was done with coccinelle. Reported-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-gpio@vger.kernel.org
2015-07-16pinctrl: single: dra7: remove PCS_QUIRK_SHARED_IRQGrygorii Strashko1-1/+0
On DRA7 there is one pinctrl domain (dra7_pmx_core) and PRCM wake-up IRQ is not shared, so remove quirk. Cc: Nishanth Menon <nm@ti.com> Fixes: 31320beaa3d3 ('pinctrl: single: Add DRA7 pinctrl compatibility') Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Acked-by: Tero Kristo <t-kristo@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-06-10pinctrl: make pinctrl_register() return proper error codeMasahiro Yamada1-2/+2
Currently, pinctrl_register() just returns NULL on error, so the callers can not know the exact reason of the failure. Some of the pinctrl drivers return -EINVAL, some -ENODEV, and some -ENOMEM on error of pinctrl_register(), although the error code might be different from the real cause of the error. This commit reworks pinctrl_register() to return the appropriate error code and modifies all of the pinctrl drivers to use IS_ERR() for the error checking and PTR_ERR() for getting the error code. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Patrice Chotard <patrice.chotard@st.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Heiko Stuebner <heiko@sntech.de> Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Lee Jones <lee@kernel.org> Acked-by: Sören Brinkmann <soren.brinkmann@xilinx.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Ray Jui <rjui@broadcom.com> Acked-by: Antoine Tenart <antoine.tenart@free-electrons.com> Acked-by: Hongzhou Yang <hongzhou.yang@mediatek.com> Acked-by: Wei Chen <Wei.Chen@csr.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-05-06pinctrl: single: Constify irq_domain_opsKrzysztof Kozlowski1-1/+1
The irq_domain_ops are not modified by the driver and the irqdomain core code accepts pointer to a const data. Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-03-27pinctrl: constify of_device_id arrayFabian Frederick1-2/+2
of_device_id is always used as const. (See driver.of_match_table and open firmware functions) Signed-off-by: Fabian Frederick <fabf@skynet.be> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Patrice Chotard <patrice.chotard@st.com> Acked-by: Maxime Coquelin <maxime.coquelin@st.com> Acked-by: Hongzhou Yang <hongzhou.yang@mediatek.com> Acked-by: Lee Jones <lee@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-10-20pinctrl: 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>
2014-09-05pinctrl: single: fix freudian slipLinus Walleij1-1/+1
commit 03e9f0cac5da6af85758276cb4624caf5911f2b9 "pinctrl: clean up after enable refactoring" renamed the vtable callback .enable to .set_mux. The renaming was done manually, and one of the alterations contained a freudian slip. I confess, I am human. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-09-04pinctrl: clean up after enable refactoringLinus Walleij1-2/+2
commit 2243a87d90b42eb38bc281957df3e57c712b5e56 "pinctrl: avoid duplicated calling enable_pinmux_setting for a pin" removed the .disable callback from the struct pinmux_ops, making the .enable() callback the only remaining callback. However .enable() is a bad name as it seems to imply that a muxing can also be disabled. Rename the callback to .set_mux() and also take this opportunity to clean out any remaining mentions of .disable() from the documentation. Acked-by: Stephen Warren <swarren@nvidia.com> Acked-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Acked-by: Fan Wu <fwu@marvell.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-08-29pinctrl: single: AM437x: Add pinctrl compatibilityKeerthy1-0/+7
AM437x pinctrl definitions now differ from traditional 16 bit OMAP pin ctrl definitions, in that all 32 bits are used to describe a single pin Also the location of wakeupenable and event bits have changed. Signed-off-by: Keerthy <j-keerthy@ti.com> [nm@ti.com: minor updates] Signed-off-by: Nishanth Menon <nm@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-08-29pinctrl: single: Add DRA7 pinctrl compatibilityNishanth Menon1-0/+7
DRA7 pinctrl definitions now differ from traditional 16 bit OMAP pin ctrl definitions, in that all 32 bits are used to describe a single pin Also the location of wakeupenable and event bits have changed. Signed-off-by: Nishanth Menon <nm@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-07-11pinctrl: pinctrl-single.c: Cleaning up wrong format string usageRickard Strandqvist1-1/+1
%d in format string used, but the type is unsigned int This was found using a static code analysis program called cppcheck Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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