Nicolas Pitre 0bfa0820c2 PM: clk: make PM clock layer compatible with clocks that must sleep ... The clock API splits its interface into sleepable ant atomic contexts: - clk_prepare/clk_unprepare for stuff that might sleep - clk_enable_clk_disable for anything that may be done in atomic context The code handling runtime PM for clocks only calls clk_disable() on suspend requests, and clk_enable on resume requests. This means that runtime PM with clock providers that only have the prepare/unprepare methods implemented is basically useless. Many clock implementations can't accommodate atomic contexts. This is often the case when communication with the clock happens through another subsystem like I2C or SCMI. Let's make the clock PM code useful with such clocks by safely invoking clk_prepare/clk_unprepare upon resume/suspend requests. Of course, when such clocks are registered with the PM layer then pm_runtime_irq_safe() can't be used, and neither pm_runtime_suspend() nor pm_runtime_resume() may be invoked in atomic context. For clocks that do implement the enable and disable methods then everything just works as before. A note on sparse: According to https://lwn.net/Articles/109066/ there are things that sparse can't cope with. In particular, pm_clk_op_lock() and pm_clk_op_unlock() may or may not lock/unlock psd->lock depending on some runtime condition. To work around that we tell it the lock is always untaken for the purpose of static analisys. Thanks to Naresh Kamboju for reporting issues with the initial patch. Signed-off-by: Nicolas Pitre <npitre@baylibre.com> Tested-by: Naresh Kamboju <naresh.kamboju@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>		2021-01-27 19:29:32 +01:00
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actions	clk: actions: Add Actions S500 SoC Reset Management Unit support	2020-07-21 01:50:47 -07:00
analogbits	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
at91	clk: at91: sam9x60: remove atmel,osc-bypass support	2020-12-19 15:33:00 -08:00
axis	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
axs10x	clk: axs10x: use devm_platform_ioremap_resource() to simplify code	2019-10-16 16:17:50 -07:00
baikal-t1	clk: baikal-t1: Mark Ethernet PLL as critical	2020-10-13 19:48:34 -07:00
bcm	clk: bcm: dvp: Add MODULE_DEVICE_TABLE()	2020-12-19 11:48:29 -08:00
berlin	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
davinci	This pull request contains zero diff to the core framework. It is a collection	2020-10-22 12:53:28 -07:00
h8300	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
hisilicon	Merge branches 'clk-hisi', 'clk-amlogic', 'clk-samsung', 'clk-renesas' and 'clk-imx' into clk-next	2019-11-27 08:14:17 -08:00
imgtec	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
imx	The core framework got some nice improvements this time around. We gained the	2020-12-21 10:39:37 -08:00
ingenic	clk: ingenic: Fix divider calculation with div tables	2020-12-19 16:04:58 -08:00
keystone	clk: keystone: sci-clk: add 10% slack to set_rate	2020-09-22 12:58:52 -07:00
loongson1	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
mediatek	clk: mediatek: Make mtk_clk_register_mux() a static function	2020-12-17 00:41:54 -08:00
meson	The core framework got some nice improvements this time around. We gained the	2020-12-21 10:39:37 -08:00
microchip	clk: let init callback return an error code	2019-12-23 18:53:13 -08:00
mmp	Merge branches 'clk-semicolon', 'clk-axi-clkgen', 'clk-qoriq', 'clk-baikal', 'clk-const' and 'clk-mmp2' into clk-next	2020-10-20 11:47:02 -07:00
mvebu	clk: mvebu: a3700: fix the XTAL MODE pin to MPP1_9	2020-12-19 15:51:18 -08:00
mxs	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 159	2019-05-30 11:26:37 -07:00
nxp	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 159	2019-05-30 11:26:37 -07:00
pistachio	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 422	2019-06-05 17:37:15 +02:00
pxa	clk: pxa: Constify static struct clk_ops	2020-10-13 19:49:11 -07:00
qcom	The core framework got some nice improvements this time around. We gained the	2020-12-21 10:39:37 -08:00
renesas	The core framework got some nice improvements this time around. We gained the	2020-12-21 10:39:37 -08:00
rockchip	clk: rockchip: fix i2s gate bits on rk3066 and rk3188	2020-11-29 20:10:45 +01:00
samsung	The core framework got some nice improvements this time around. We gained the	2020-12-21 10:39:37 -08:00
sifive	clk: sifive: Add clock enable and disable ops	2020-12-16 12:23:13 -08:00
sirf	clk: clk-prima2: fix return value check in prima2_clk_init()	2020-10-13 19:54:30 -07:00
socfpga	This pull request contains zero diff to the core framework. It is a collection	2020-10-22 12:53:28 -07:00
spear	clk: spear: Remove uninitialized_var() usage	2020-07-16 12:32:26 -07:00
sprd	This time around we have 4 lines of diff in the core framework, removing a	2020-06-10 11:42:19 -07:00
st	clk: st: Remove uninitialized_var() usage	2020-07-16 12:32:25 -07:00
sunxi	clk: sunxi: Fix incorrect usage of round_down()	2020-04-14 09:21:05 +02:00
sunxi-ng	clk: sunxi-ng: Make sure divider tables have sentinel	2020-12-19 15:54:02 -08:00
tegra	clk: tegra30: Add hda clock default rates to clock driver	2021-01-12 14:43:53 +01:00
ti	The core framework got some nice improvements this time around. We gained the	2020-12-21 10:39:37 -08:00
uniphier	clk: uniphier: use semicolons rather than commas to separate statements	2020-10-13 17:43:03 -07:00
ux500	clk: ux500: Fix up the SGA clock for some variants	2020-01-04 23:27:15 -08:00
versatile	clk: versatile: Add of_node_put() before return statement	2020-09-10 00:57:42 -07:00
x86	More ACPI updates for 5.9-rc1	2020-08-15 08:18:22 -07:00
zte	clk: zx296718: Don't reference clk_init_data after registration	2019-08-16 10:20:15 -07:00
zynq	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 401	2019-06-05 17:37:13 +02:00
zynqmp	This time around we have 4 lines of diff in the core framework, removing a	2020-06-10 11:42:19 -07:00
clk-asm9260.c	clk: asm9260: fix __clk_hw_register_fixed_rate_with_accuracy typo	2020-04-13 12:20:06 -07:00
clk-aspeed.c	clk: aspeed: Add RMII RCLK gates for both AST2500 MACs	2019-11-26 10:02:48 -08:00
clk-aspeed.h	clk: aspeed: Move structures to header	2019-09-06 15:17:02 -07:00
clk-ast2600.c	clk: AST2600: Add mux for EMMC clock	2020-07-11 09:15:33 -07:00
clk-axi-clkgen.c	clk: axi-clkgen: move the OF table at the bottom of the file	2020-12-17 01:52:54 -08:00
clk-axm5516.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
clk-bd718x7.c	clk: bd718x7: Support ROHM BD71828 clk block	2020-01-24 07:22:47 +00:00
clk-bm1880.c	clk: bm1800: Remove set but not used variable 'fref'	2019-12-24 00:10:33 -08:00
clk-bulk.c	clk: Make clk_bulk_get_all() return a valid "id"	2019-09-17 13:26:31 -07:00
clk-cdce706.c	Replace HTTP links with HTTPS ones: Common CLK framework	2020-07-10 17:15:34 -07:00
clk-cdce925.c	clk: clk-cdce925: Add regulator support	2019-09-06 10:31:16 -07:00
clk-clps711x.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
clk-composite.c	clk: composite: add devm_clk_hw_register_composite_pdata()	2020-12-07 14:06:16 -08:00
clk-conf.c	clk: Tag clk core files with SPDX	2018-12-11 09:57:47 -08:00
clk-cs2000-cp.c	clk: cs2000-cp: convert to SPDX identifiers	2018-08-02 13:55:00 -07:00
clk-devres.c	clk: Add devm_clk_bulk_get_optional() function	2019-06-25 14:28:01 -07:00
clk-divider.c	clk: divider: add devm_clk_hw_register_divider_table()	2020-12-07 16:53:39 -08:00
clk-efm32gg.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
clk-fixed-factor.c	clk: fixed: add missing kerneldoc	2020-09-22 12:44:14 -07:00
clk-fixed-mmio.c	clk: Remove io.h from clk-provider.h	2019-05-15 13:21:37 -07:00
clk-fixed-rate.c	clk: fixed: add missing kerneldoc	2020-09-22 12:44:14 -07:00
clk-fractional-divider.c	clk: Remove io.h from clk-provider.h	2019-05-15 13:21:37 -07:00
clk-fsl-flexspi.c	clk: fsl-flexspi: new driver	2020-12-07 16:56:41 -08:00
clk-fsl-sai.c	clk: fsl-sai: use devm_clk_hw_register_composite_pdata()	2020-12-07 14:06:16 -08:00
clk-gate.c	treewide: Remove uninitialized_var() usage	2020-07-16 12:35:15 -07:00
clk-gemini.c	treewide: Use struct_size() for kmalloc()-family	2018-06-06 11:15:43 -07:00
clk-gpio.c	Replace HTTP links with HTTPS ones: Common CLK framework	2020-07-10 17:15:34 -07:00
clk-hi655x.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288	2019-06-05 17:36:37 +02:00
clk-highbank.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201	2019-05-30 11:29:52 -07:00
clk-hsdk-pll.c	CLK: HSDK: CGU: add support for 148.5MHz clock	2020-05-28 21:06:39 -07:00
clk-lochnagar.c	clk: lochnagar: Don't reference clk_init_data after registration	2019-08-16 10:20:07 -07:00
clk-max9485.c	clk: Add driver for MAX9485	2018-07-06 13:44:06 -07:00
clk-max77686.c	clk: clk-max77686: Clean clkdev lookup leak and use devm	2019-02-06 10:35:03 -08:00
clk-milbeaut.c	clk: milbeaut: Don't reference clk_init_data after registration	2019-08-16 10:20:15 -07:00
clk-moxart.c	clk: Convert to using %pOF instead of full_name	2017-07-21 15:49:54 -07:00
clk-multiplier.c	clk: Remove io.h from clk-provider.h	2019-05-15 13:21:37 -07:00
clk-mux.c	clk: mux: Add support for specifying parents via DT/pointers	2020-01-06 23:10:05 -08:00
clk-nomadik.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194	2019-05-30 11:29:22 -07:00
clk-npcm7xx.c	This time it looks like a quieter release cycle in the clk tree. I guess that's	2018-10-31 11:08:30 -07:00
clk-nspire.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
clk-oxnas.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201	2019-05-30 11:29:52 -07:00
clk-palmas.c	clk: palmas: constify clk_ops structure	2018-11-06 09:41:44 -08:00
clk-plldig.c	clk: ls1028a: fix a dereference of pointer 'parent' before a null check	2020-02-03 23:03:49 -08:00
clk-pwm.c	clk: pwm: drop of_match_ptr from of_device_id table	2020-12-10 12:24:18 -08:00
clk-qoriq.c	clk: qoriq: provide constants for the type	2020-12-07 16:53:30 -08:00
clk-rk808.c	- Core Frameworks	2019-07-15 20:18:40 -07:00
clk-s2mps11.c	clk: s2mps11: Fix a resource leak in error handling paths in the probe function	2020-12-19 15:53:31 -08:00
clk-scmi.c	clk: scmi: Fix min and max rate when registering clocks with discrete rates	2020-07-13 09:40:21 +01:00
clk-scpi.c	clk: scpi: mark scpi_clk_match as maybe unused	2020-12-10 12:24:40 -08:00
clk-si514.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157	2019-05-30 11:26:37 -07:00
clk-si544.c	clk: clk-si544: Implement small frequency change support	2019-06-27 13:45:38 -07:00
clk-si570.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157	2019-05-30 11:26:37 -07:00
clk-si5341.c	clk: si5341: drop unused 'err' variable	2020-09-22 12:44:41 -07:00
clk-si5351.c	clk: si5351: Wait for bit clear after PLL reset	2020-12-19 15:49:54 -08:00
clk-si5351.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
clk-sparx5.c	clk: sparx5: Add Sparx5 SoC DPLL clock driver	2020-07-28 18:17:56 -07:00
clk-stm32f4.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201	2019-05-30 11:29:52 -07:00
clk-stm32h7.c	clk: Convert to using %pOFn instead of device_node.name	2018-08-30 09:50:20 -07:00
clk-stm32mp1.c	clk: stm32mp1: Add ddrperfm clock	2019-04-29 11:13:23 -07:00
clk-tango4.c	clk: Convert to using %pOFn instead of device_node.name	2018-08-30 09:50:20 -07:00
clk-twl6040.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 336	2019-06-05 17:37:07 +02:00
clk-u300.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194	2019-05-30 11:29:22 -07:00
clk-versaclock5.c	clk: vc5: Use "idt,voltage-microvolt" instead of "idt,voltage-microvolts"	2020-12-19 16:08:51 -08:00
clk-vt8500.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282	2019-06-05 17:36:37 +02:00
clk-wm831x.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
clk-xgene.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156	2019-05-30 11:26:35 -07:00
clk.c	PM: clk: make PM clock layer compatible with clocks that must sleep	2021-01-27 19:29:32 +01:00
clk.h	clk: consoldiate the __clk_get_hw() declarations	2019-07-12 11:00:14 -07:00
clkdev.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
Kconfig	clk: fsl-flexspi: new driver	2020-12-07 16:56:41 -08:00
Makefile	clk: fsl-flexspi: new driver	2020-12-07 16:56:41 -08:00