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Serge Semin 93e6c2cbcd i2c: designware: Use standard optional ref clock implementation 
[ Upstream commit 27071b5cbc ]

Even though the DW I2C controller reference clock source is requested by
the method devm_clk_get() with non-optional clock requirement the way the
clock handler is used afterwards has a pure optional clock semantic
(though in some circumstances we can get a warning about the clock missing
printed in the system console). There is no point in reimplementing that
functionality seeing the kernel clock framework already supports the
optional interface from scratch. Thus let's convert the platform driver to
using it.

Note by providing this commit we get to fix two problems. The first one
was introduced in commit c62ebb3d5f ("i2c: designware: Add support for
an interface clock"). It causes not having the interface clock (pclk)
enabled/disabled in case if the reference clock isn't provided. The second
problem was first introduced in commit b33af11de2 ("i2c: designware: Do
not require clock when SSCN and FFCN are provided"). Since that
modification the deferred probe procedure has been unsupported in case if
the interface clock isn't ready.

Fixes: c62ebb3d5f ("i2c: designware: Add support for an interface clock")
Fixes: b33af11de2 ("i2c: designware: Do not require clock when SSCN and FFCN are provided")
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-06-22 14:22:02 +02:00
..
i2c-acorn.c
i2c-ali15x3.c
i2c-ali1535.c i2c: ali1535: mention that the device should not be disabled 2021-07-02 09:14:46 +02:00
i2c-ali1563.c i2c: busses: i2c-ali1563: File headers are not good candidates for kernel-doc 2021-05-27 21:29:26 +02:00
i2c-altera.c i2c: altera: Fix formatting issue in struct and demote unworthy kernel-doc headers 2021-06-03 22:25:24 +02:00
i2c-amd-mp2-pci.c i2c: amd-mp2: convert to PCI logging functions 2021-02-01 23:01:29 +01:00
i2c-amd-mp2-plat.c i2c: amd-mp2: convert to PCI logging functions 2021-02-01 23:01:29 +01:00
i2c-amd-mp2.h i2c: amd-mp2: Remove unused macro 2021-02-01 23:01:50 +01:00
i2c-amd756-s4882.c
i2c-amd756.c
i2c-amd8111.c i2c: amd8111: Fix coding style issues 2021-04-15 22:24:11 +02:00
i2c-aspeed.c i2c: aspeed: disable additional device addresses on ast2[56]xx 2021-05-27 21:44:19 +02:00
i2c-at91-core.c i2c: at91: mark PM ops as __maybe unused 2021-08-11 15:54:01 +02:00
i2c-at91-master.c i2c: at91: Initialize dma_buf in at91_twi_xfer() 2022-06-09 10:23:14 +02:00
i2c-at91-slave.c
i2c-at91.h i2c: at91: remove legacy DMA left overs 2020-11-03 21:34:40 +01:00
i2c-au1550.c
i2c-axxia.c
i2c-bcm-iproc.c i2c: iproc: fix race between client unreg and tasklet 2021-08-10 22:40:55 +02:00
i2c-bcm-kona.c
i2c-bcm2835.c i2c: bcm2835: Fix the error handling in 'bcm2835_i2c_probe()' 2022-04-08 14:23:29 +02:00
i2c-brcmstb.c i2c: brcmstb: fix support for DSL and CM variants 2022-02-23 12:03:22 +01:00
i2c-cadence.c i2c: cadence: Increase timeout per message if necessary 2022-06-14 18:36:15 +02:00
i2c-cbus-gpio.c i2c: cbus-gpio: set atomic transfer callback 2021-12-08 09:04:46 +01:00
i2c-cht-wc.c i2c: cht-wc: Replace of_node by NULL 2021-06-20 22:47:24 +02:00
i2c-cp2615.c i2c: cp2615: check for allocation failure in cp2615_i2c_recv() 2021-06-20 23:13:34 +02:00
i2c-cpm.c i2c: cpm: Fix i2c_ram structure 2020-09-27 15:14:16 +02:00
i2c-cros-ec-tunnel.c
i2c-davinci.c i2c: davinci: Simplify with dev_err_probe() 2021-06-23 18:23:55 +02:00
i2c-designware-baytrail.c
i2c-designware-common.c i2c: designware: Use standard optional ref clock implementation 2022-06-22 14:22:02 +02:00
i2c-designware-core.h i2c: designware: Fix indentation in the header 2021-08-11 16:43:32 +02:00
i2c-designware-master.c i2c: busses: i2c-designware-master: Fix misnaming of 'i2c_dw_init_master()' 2021-05-27 21:32:12 +02:00
i2c-designware-pcidrv.c i2c: designware-pci: Fix to change data types of hcnt and lcnt parameters 2022-01-27 11:05:02 +01:00
i2c-designware-platdrv.c i2c: designware: Use standard optional ref clock implementation 2022-06-22 14:22:02 +02:00
i2c-designware-slave.c i2c: designware: slave should do WRITE_REQUESTED before WRITE_RECEIVED 2020-11-06 16:02:00 +01:00
i2c-digicolor.c i2c: busses: Replace spin_lock_irqsave with spin_lock in hard IRQ 2021-02-12 08:21:57 +01:00
i2c-diolan-u2c.c
i2c-dln2.c
i2c-eg20t.c i2c: busses: i2c-eg20t: Fix 'bad line' issue and provide description for 'msgs' param 2021-05-27 21:33:10 +02:00
i2c-elektor.c Merge branch 'i2c/for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2021-02-22 09:02:24 -08:00
i2c-emev2.c i2c: emev2: add IRQ check 2021-04-14 10:20:00 +02:00
i2c-exynos5.c i2c: exynos5: correct top kerneldoc 2021-04-06 22:32:33 +02:00
i2c-fsi.c
i2c-gpio.c i2c: gpio: fix MODULE_LICENCE 2021-01-05 17:30:45 +01:00
i2c-highlander.c i2c: highlander: add IRQ check 2021-08-03 22:48:39 +02:00
i2c-hisi.c i2c: add support for HiSilicon I2C controller 2021-04-10 21:54:05 +02:00
i2c-hix5hd2.c i2c: hix5hd2: fix IRQ check 2021-08-19 19:18:24 +02:00
i2c-hydra.c
i2c-i801.c i2c: i801: Don't silently correct invalid transfer size 2022-01-27 11:04:57 +01:00
i2c-ibm_iic.c
i2c-ibm_iic.h
i2c-icy.c i2c: icy: Remove unused variable new_fwnode in icy_probe() 2021-05-25 21:21:32 +02:00
i2c-img-scb.c i2c: img-scb: fix reference leak when pm_runtime_get_sync fails 2021-04-14 09:49:06 +02:00
i2c-imx-lpi2c.c i2c: imx-lpi2c: fix reference leak when pm_runtime_get_sync fails 2021-04-14 09:49:09 +02:00
i2c-imx.c i2c: imx: : use proper DMAENGINE API for termination 2021-08-11 15:15:30 +02:00
i2c-iop3xx.c i2c: iop3xx: fix deferred probing 2021-08-19 19:18:17 +02:00
i2c-iop3xx.h
i2c-isch.c
i2c-ismt.c i2c: ismt: prevent memory corruption in ismt_access() 2022-06-06 08:43:37 +02:00
i2c-jz4780.c Merge branch 'i2c/for-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2021-04-30 13:01:02 -07:00
i2c-kempld.c
i2c-lpc2k.c
i2c-meson.c i2c: meson: Fix wrong speed use from probe 2022-04-08 14:23:42 +02:00
i2c-mlxbf.c i2c: mlxbf: add IRQ check 2021-04-14 10:20:45 +02:00
i2c-mlxcpld.c i2c: mlxcpld: Modify register setting for 400KHz frequency 2021-10-04 21:56:20 +02:00
i2c-mpc.c i2c: mpc: Correct I2C reset procedure 2022-01-27 11:04:58 +01:00
i2c-mt65xx.c i2c: mediatek: fixing the incorrect register offset 2021-11-18 19:16:59 +01:00
i2c-mt7621.c i2c: mt7621: fix missing clk_disable_unprepare() on error in mtk_i2c_probe() 2022-05-25 09:57:37 +02:00
i2c-mv64xxx.c i2c: mv64xxx: Fix random system lock caused by runtime PM 2021-04-15 22:13:19 +02:00
i2c-mxs.c i2c: mxs: : use proper DMAENGINE API for termination 2021-08-11 15:16:01 +02:00
i2c-nforce2-s4985.c
i2c-nforce2.c
i2c-nomadik.c i2c: busses: i2c-nomadik: Fix formatting issue pertaining to 'timeout' 2021-05-27 21:27:48 +02:00
i2c-npcm7xx.c i2c: npcm7xx: Add check for platform_driver_register 2022-06-22 14:22:02 +02:00
i2c-nvidia-gpu.c i2c: nvidia-gpu: Constify the software node 2021-04-10 21:43:01 +02:00
i2c-ocores.c i2c: busses: i2c-ocores: Place the expected function names into the documentation headers 2021-05-27 21:33:41 +02:00
i2c-octeon-core.c i2c: octeon: check correct size of maximum RECV_LEN packet 2021-01-17 12:26:55 +01:00
i2c-octeon-core.h
i2c-octeon-platdrv.c
i2c-omap.c i2c: omap: fix reference leak when pm_runtime_get_sync fails 2021-04-14 09:49:17 +02:00
i2c-opal.c
i2c-owl.c i2c: owl: Add compatible for the Actions Semi S500 I2C controller 2020-12-09 21:23:21 +01:00
i2c-parport.c i2c: parport: Switch to use module_parport_driver() 2021-08-10 23:07:37 +02:00
i2c-pasemi.c i2c: pasemi: Wait for write xfers to finish 2022-04-20 09:34:21 +02:00
i2c-pca-isa.c isa: Make the remove callback for isa drivers return void 2021-01-26 07:42:27 +01:00
i2c-pca-platform.c i2c: pca-platform: drop two members from driver data that are assigned to only 2020-12-02 21:29:31 +01:00
i2c-piix4.c i2c: piix4: Enable EFCH MMIO for Family 17h+ 2022-05-25 09:57:23 +02:00
i2c-pnx.c i2c: busses: i2c-pnx: Provide descriptions for 'alg_data' data structure 2021-05-27 21:34:08 +02:00
i2c-powermac.c i2c: powermac: remove uncertainty about SMBUS_BLOCK transfers 2021-03-18 11:59:57 +01:00
i2c-pxa-pci.c
i2c-pxa.c i2c: pxa: move to generic GPIO recovery 2020-12-09 21:45:47 +01:00
i2c-qcom-cci.c i2c: qcom-cci: don't put a device tree node before i2c_add_adapter() 2022-02-23 12:03:21 +01:00
i2c-qcom-geni.c i2c: qcom-geni: Suspend and resume the bus during SYSTEM_SLEEP_PM ops 2021-06-04 22:32:58 +02:00
i2c-qup.c i2c: qup: : use proper DMAENGINE API for termination 2021-08-11 15:19:00 +02:00
i2c-rcar.c i2c: rcar: fix PM ref counts in probe error paths 2022-06-09 10:23:16 +02:00
i2c-riic.c i2c: riic: Add RZ/G2L support 2021-06-20 22:40:44 +02:00
i2c-rk3x.c i2c: rk3x: Handle a spurious start completion interrupt flag 2021-12-17 10:30:15 +01:00
i2c-robotfuzz-osif.c i2c: robotfuzz-osif: fix control-request directions 2021-06-24 22:08:00 +02:00
i2c-s3c2410.c i2c: s3c2410: fix IRQ check 2021-08-19 19:18:24 +02:00
i2c-scmi.c i2c: i2c-scmi: Drop unused ACPI_MODULE_NAME definition 2021-03-18 12:11:45 +01:00
i2c-sh7760.c i2c: sh7760: fix IRQ error path 2021-04-17 22:00:58 +02:00
i2c-sh_mobile.c i2c: sh_mobile: : use proper DMAENGINE API for termination 2021-08-11 15:22:24 +02:00
i2c-sibyte.c
i2c-simtec.c
i2c-sis96x.c
i2c-sis630.c
i2c-sis5595.c
i2c-sprd.c i2c: sprd: fix reference leak when pm_runtime_get_sync fails 2021-04-14 09:49:20 +02:00
i2c-st.c i2c: busses: i2c-st: Fix copy/paste function misnaming issues 2021-05-27 21:39:35 +02:00
i2c-stm32.c
i2c-stm32.h
i2c-stm32f4.c i2c: busses: i2c-stm32f4: Remove incorrectly placed ' ' from function name 2021-05-27 21:39:57 +02:00
i2c-stm32f7.c i2c: stm32f7: stop dma transfer in case of NACK 2021-12-08 09:04:46 +01:00
i2c-sun6i-p2wi.c i2c: sun6i-pw2i: Prefer strscpy over strlcpy 2021-08-17 21:37:40 +02:00
i2c-synquacer.c i2c: synquacer: fix deferred probing 2021-08-17 21:41:32 +02:00
i2c-taos-evm.c
i2c-tegra-bpmp.c i2c: tegra-bpmp: Demote kernel-doc abuses 2021-06-03 22:31:42 +02:00
i2c-tegra.c i2c: tegra: Use threaded interrupt 2021-01-28 10:03:58 +01:00
i2c-thunderx-pcidrv.c drivers: i2c: thunderx: Allow driver to work with ACPI defined TWSI controllers 2022-06-06 08:43:37 +02:00
i2c-tiny-usb.c
i2c-uniphier-f.c
i2c-uniphier.c
i2c-versatile.c
i2c-via.c
i2c-viapro.c
i2c-viperboard.c
i2c-virtio.c i2c: virtio: fix completion handling 2021-12-17 10:30:14 +01:00
i2c-wmt.c
i2c-xgene-slimpro.c i2c: remove unused 'version.h' include in drivers 2021-04-08 23:12:38 +02:00
i2c-xiic.c i2c: xiic: Make bus names unique 2022-04-08 14:23:37 +02:00
i2c-xlp9xx.c i2c: xlp9xx: fix main IRQ check 2021-08-25 23:04:17 +02:00
i2c-xlr.c i2c: xlr: Fix a resource leak in the error handling path of 'xlr_i2c_probe()' 2021-11-18 19:17:04 +01:00
Kconfig i2c: qup: allow COMPILE_TEST 2022-03-08 19:12:31 +01:00
Makefile i2c: virtio: add a virtio i2c frontend driver 2021-08-19 21:21:19 +02:00
scx200_acb.c