Linux kernel stable tree (mirror) https://git.radix-linux.su/kernel/linux.git/atom?h=v5.10.258 2024-10-17T13:07:44+00:00 2024-10-17T13:07:44+00:00 Biju Das biju.das.jz@bp.renesas.com 2023-06-07T16:57:38+00:00 urn:sha1:514a1508c3fe3e77bbf625e61439f2650aedde4a [ Upstream commit 564d73c4d9201526bd976b9379d2aaf1a7133e84 ] Add i2c_get_match_data() to get match data for I2C, ACPI and DT-based matching, so that we can optimize the driver code. Suggested-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> [wsa: simplified var initialization] Signed-off-by: Wolfram Sang <wsa@kernel.org> Stable-dep-of: 119abf7d1815 ("hwmon: (max16065) Fix alarm attributes") Signed-off-by: Sasha Levin <sashal@kernel.org> 2024-09-12T09:06:42+00:00 Richard Fitzgerald rf@opensource.cirrus.com 2024-08-14T12:16:49+00:00 urn:sha1:b1400745609d653cd858e18c3e00d70518bdb802 commit 71833e79a42178d8a50b5081c98c78ace9325628 upstream. Replace IS_ENABLED() with IS_REACHABLE() to substitute empty stubs for: i2c_acpi_get_i2c_resource() i2c_acpi_client_count() i2c_acpi_find_bus_speed() i2c_acpi_new_device_by_fwnode() i2c_adapter *i2c_acpi_find_adapter_by_handle() i2c_acpi_waive_d0_probe() commit f17c06c6608a ("i2c: Fix conditional for substituting empty ACPI functions") partially fixed this conditional to depend on CONFIG_I2C, but used IS_ENABLED(), which is wrong since CONFIG_I2C is tristate. CONFIG_ACPI is boolean but let's also change it to use IS_REACHABLE() to future-proof it against becoming tristate. Somehow despite testing various combinations of CONFIG_I2C and CONFIG_ACPI we missed the combination CONFIG_I2C=m, CONFIG_ACPI=y. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Fixes: f17c06c6608a ("i2c: Fix conditional for substituting empty ACPI functions") Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202408141333.gYnaitcV-lkp@intel.com/ Reviewed-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2024-09-12T09:06:39+00:00 Richard Fitzgerald rf@opensource.cirrus.com 2024-08-02T15:22:14+00:00 urn:sha1:712921d2abf47ab665c658b21cfcd2a217476477 [ Upstream commit f17c06c6608ad4ecd2ccf321753fb511812d821b ] Add IS_ENABLED(CONFIG_I2C) to the conditional around a bunch of ACPI functions. The conditional around these functions depended only on CONFIG_ACPI. But the functions are implemented in I2C core, so are only present if CONFIG_I2C is enabled. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Sasha Levin <sashal@kernel.org> 2021-05-19T08:12:54+00:00 Bence Csókás bence98@sch.bme.hu 2021-03-31T19:19:20+00:00 urn:sha1:2c098ad786d36a7e0027f3f33330b07a39de3ea6 [ Upstream commit aca01415e076aa96cca0f801f4420ee5c10c660d ] This quirk signifies that the adapter cannot do a repeated START, it always issues a STOP condition after transfers. Suggested-by: Wolfram Sang <wsa@kernel.org> Signed-off-by: Bence Csókás <bence98@sch.bme.hu> Signed-off-by: Wolfram Sang <wsa@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> 2020-09-21T09:45:43+00:00 Tian Tao tiantao6@hisilicon.com 2020-09-15T01:38:18+00:00 urn:sha1:b1d4dc15b2f430a4f541ab6c91e63a71cf230b7d Switch to using the new API kobj_to_dev(). Signed-off-by: Tian Tao <tiantao6@hisilicon.com> Signed-off-by: Wolfram Sang <wsa@kernel.org> 2020-08-14T01:41:00+00:00 Linus Torvalds torvalds@linux-foundation.org 2020-08-14T01:41:00+00:00 urn:sha1:e764a1e32337aaf325fc5b14a5bbd06eabba4699 Pull i2c updates from Wolfram Sang: - bus recovery can now be given a pinctrl handle and the I2C core will do all the steps to switch to/from GPIO which can save quite some boilerplate code from drivers - "fallthrough" conversion - driver updates, mostly ID additions * 'i2c/for-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (32 commits) i2c: iproc: fix race between client unreg and isr i2c: eg20t: use generic power management i2c: eg20t: Drop PCI wakeup calls from .suspend/.resume i2c: mediatek: Fix i2c_spec_values description i2c: mediatek: Add i2c compatible for MediaTek MT8192 dt-bindings: i2c: update bindings for MT8192 SoC i2c: mediatek: Add access to more than 8GB dram in i2c driver i2c: mediatek: Add apdma sync in i2c driver i2c: i801: Add support for Intel Tiger Lake PCH-H i2c: i801: Add support for Intel Emmitsburg PCH i2c: bcm2835: Replace HTTP links with HTTPS ones Documentation: i2c: dev: 'block process call' is supported i2c: at91: Move to generic GPIO bus recovery i2c: core: treat EPROBE_DEFER when acquiring SCL/SDA GPIOs i2c: core: add generic I2C GPIO recovery dt-bindings: i2c: add generic properties for GPIO bus recovery i2c: rcar: avoid race when unregistering slave i2c: tegra: Avoid tegra_i2c_init_dma() for Tegra210 vi i2c i2c: tegra: Fix runtime resume to re-init VI I2C i2c: tegra: Fix the error path in tegra_i2c_runtime_resume ... 2020-08-05T09:52:27+00:00 Codrin Ciubotariu codrin.ciubotariu@microchip.com 2020-08-04T09:59:24+00:00 urn:sha1:75820314de26b00aaea0d0e79269c0d17914c5c4 Multiple I2C bus drivers use similar bindings to obtain information needed for I2C recovery. For example, for platforms using device-tree, the properties look something like this: &i2c { ... pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c_default>; pinctrl-1 = <&pinctrl_i2c_gpio>; sda-gpios = <&pio 0 GPIO_ACTIVE_HIGH>; scl-gpios = <&pio 1 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; ... } For this reason, we can add this common initialization in the core. This way, other I2C bus drivers will be able to support GPIO recovery just by providing a pointer to platform's pinctrl and calling i2c_recover_bus() when SDA is stuck low. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> [wsa: inverted one logic for better readability, minor update to kdoc] Signed-off-by: Wolfram Sang <wsa@kernel.org> 2020-07-31T13:54:27+00:00 Wolfram Sang wsa@kernel.org 2020-07-31T13:54:27+00:00 urn:sha1:073d398dc4841f62488ac6060ffeb9dfce6e0a98 2020-07-27T18:16:58+00:00 Wolfram Sang wsa+renesas@sang-engineering.com 2020-07-25T14:07:36+00:00 urn:sha1:8be23aec0ee151de731626d5578973fde25b2285 All i2c_new_device-alike functions return ERR_PTR these days, but this fallback function was missed. Fixes: 2dea645ffc21 ("i2c: acpi: Return error pointers from i2c_acpi_new_device()") Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> [wsa: changed from 'ENOSYS' to 'ENODEV'] Signed-off-by: Wolfram Sang <wsa@kernel.org> 2020-07-24T19:48:27+00:00 Wolfram Sang wsa+renesas@sang-engineering.com 2020-06-30T16:24:40+00:00 urn:sha1:0c2a34937f7e4c4776bb261114c475392da2355c This manually reverts commit d1d84bb95364ed604015c2b788caaf3dbca0262f. The only user has gone two years ago with commit 589edb56b424 ("ACPI / scan: Create platform device for INT33FE ACPI nodes") and no new user has showed up. Remove and hope we will never need it again. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>