linux/drivers/i2c, branch v6.2

i2c: rk3x: fix a bunch of kernel-doc warnings

2023-01-20T09:18:51Z

Fix multiple W=1 kernel-doc warnings in i2c-rk3x.c: drivers/i2c/busses/i2c-rk3x.c:83: warning: missing initial short description on line: * struct i2c_spec_values: drivers/i2c/busses/i2c-rk3x.c:139: warning: missing initial short description on line: * struct rk3x_i2c_calced_timings: drivers/i2c/busses/i2c-rk3x.c:162: warning: missing initial short description on line: * struct rk3x_i2c_soc_data: drivers/i2c/busses/i2c-rk3x.c:242: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * Generate a START condition, which triggers a REG_INT_START interrupt. drivers/i2c/busses/i2c-rk3x.c:261: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * Generate a STOP condition, which triggers a REG_INT_STOP interrupt. drivers/i2c/busses/i2c-rk3x.c:304: warning: expecting prototype for Setup a read according to i2c(). Prototype was for rk3x_i2c_prepare_read() instead drivers/i2c/busses/i2c-rk3x.c:335: warning: expecting prototype for Fill the transmit buffer with data from i2c(). Prototype was for rk3x_i2c_fill_transmit_buf() instead drivers/i2c/busses/i2c-rk3x.c:535: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * Get timing values of I2C specification drivers/i2c/busses/i2c-rk3x.c:552: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * Calculate divider values for desired SCL frequency drivers/i2c/busses/i2c-rk3x.c:713: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * Calculate timing values for desired SCL frequency drivers/i2c/busses/i2c-rk3x.c:963: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * Setup I2C registers for an I2C operation specified by msgs, num. Signed-off-by: Randy Dunlap Signed-off-by: Wolfram Sang

i2c: axxia: use 'struct' for kernel-doc notation

2023-01-20T09:18:16Z

Add "struct" to prevent this kernel-doc warning: drivers/i2c/busses/i2c-axxia.c:135: warning: cannot understand function prototype: 'struct axxia_i2c_dev ' Signed-off-by: Randy Dunlap Signed-off-by: Wolfram Sang

i2c: mxs: suppress probe-deferral error message

2023-01-09T15:26:17Z

During boot of I2SE Duckbill the kernel log contains a confusing error: Failed to request dma This is caused by i2c-mxs tries to request a not yet available DMA channel (-EPROBE_DEFER). So suppress this message by using dev_err_probe(). Signed-off-by: Stefan Wahren Reviewed-by: Fabio Estevam Signed-off-by: Wolfram Sang

i2c: designware-pci: Add new PCI IDs for AMD NAVI GPU

2023-01-09T15:24:13Z

Add additional supported PCI IDs for latest AMD NAVI GPU card which has an integrated Type-C controller and designware I2C with PCI interface. Signed-off-by: Basavaraj Natikar Tested-by: Sanath S Reviewed-by: Andy Shevchenko Acked-by: Jarkko Nikula Signed-off-by: Wolfram Sang

i2c: designware: Fix unbalanced suspended flag

2023-01-09T12:11:17Z

Ensure that i2c_mark_adapter_suspended() is always balanced by a call to i2c_mark_adapter_resumed(). dw_i2c_plat_resume() must always be called, so that i2c_mark_adapter_resumed() is called. This is not compatible with DPM_FLAG_MAY_SKIP_RESUME, so remove the flag. Since the controller is always resumed on system resume the dw_i2c_plat_complete() callback is redundant and has been removed. The unbalanced suspended flag was introduced by commit c57813b8b288 ("i2c: designware: Lock the adapter while setting the suspended flag") Before that commit, the system and runtime PM used the same functions. The DPM_FLAG_MAY_SKIP_RESUME was used to skip the system resume if the driver had been in runtime-suspend. If system resume was skipped, the suspended flag would be cleared by the next runtime resume. The check of the suspended flag was _after_ the call to pm_runtime_get_sync() in i2c_dw_xfer(). So either a system resume or a runtime resume would clear the flag before it was checked. Having introduced the unbalanced suspended flag with that commit, a further commit 80704a84a9f8 ("i2c: designware: Use the i2c_mark_adapter_suspended/resumed() helpers") changed from using a local suspended flag to using the i2c_mark_adapter_suspended/resumed() functions. These use a flag that is checked by I2C core code before issuing the transfer to the bus driver, so there was no opportunity for the bus driver to runtime resume itself before the flag check. Signed-off-by: Richard Fitzgerald Fixes: c57813b8b288 ("i2c: designware: Lock the adapter while setting the suspended flag") Reviewed-by: Hans de Goede Acked-by: Jarkko Nikula Signed-off-by: Wolfram Sang

i2c: designware: use casting of u64 in clock multiplication to avoid overflow

2023-01-09T12:05:35Z

In functions i2c_dw_scl_lcnt() and i2c_dw_scl_hcnt() may have overflow by depending on the values of the given parameters including the ic_clk. For example in our use case where ic_clk is larger than one million, multiplication of ic_clk * 4700 will result in 32 bit overflow. Add cast of u64 to the calculation to avoid multiplication overflow, and use the corresponding define for divide. Fixes: 2373f6b9744d ("i2c-designware: split of i2c-designware.c into core and bus specific parts") Signed-off-by: Lareine Khawaly Signed-off-by: Hanna Hawa Reviewed-by: Andy Shevchenko Acked-by: Jarkko Nikula Signed-off-by: Wolfram Sang

Merge tag 'i2c-for-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

2022-12-15T22:47:10Z

Pull i2c updates from Wolfram Sang: "Core got a new helper 'i2c_client_get_device_id()', designware got some bigger updates, the rest is driver updates all over the place" * tag 'i2c-for-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (41 commits) i2c: ismt: Fix an out-of-bounds bug in ismt_access() i2c: mux: reg: check return value after calling platform_get_resource() i2c: xiic: Make sure to disable clock on .remove() i2c: hisi: Add support to get clock frequency from clock i2c: pxa-pci: fix missing pci_disable_device() on error in ce4100_i2c_probe i2c: slave-eeprom: Convert to i2c's .probe_new() i2c: mux: pca954x: Convert to i2c's .probe_new() drivers/i2c: use simple i2c probe i2c: mux: pca9541: switch to using .probe_new i2c: gpio: Fix potential unused warning for 'i2c_gpio_dt_ids' i2c: qcom-geni: add support for I2C Master Hub variant i2c: qcom-geni: add desc struct to prepare support for I2C Master Hub variant soc: qcom: geni-se: add support for I2C Master Hub wrapper variant soc: qcom: geni-se: add desc struct to specify clocks from device match data dt-bindings: i2c: qcom-geni: document I2C Master Hub serial I2C engine dt-bindings: qcom: geni-se: document I2C Master Hub wrapper variant dt-bindings: i2c: renesas,riic: Document RZ/Five SoC i2c: tegra: Set ACPI node as primary fwnode i2c: smbus: add DDR support for SPD i2c: /pasemi: PASemi I2C controller IRQ enablement ...

Merge tag 'sound-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

2022-12-13T19:27:26Z

Pull sound updates from Takashi Iwai: "This looks like a relatively calm development cycle; there have been only few changes in ALSA and ASoC core sides while we get lots of device-specific fixes and updates as usual. Most of commits are about ASoC, including Intel SOF/AVS and many device tree updates. Below are some highlights: Core: - Improvement in memalloc helper for fallback allocations - More cleanups of ASoC DAPM code ASoC: - Factoring out of mapping hw_params onto SoundWire configuration - The ever ongoing overhauls of the Intel DSP code continue, including support for loading libraries and probes with IPC4 on SOF. - Support for more sample formats on JZ4740 - Lots of device tree conversions and fixups - Support for Allwinner D1, a range of AMD and Intel systems, Mediatek systems with multiple DMICs, Nuvoton NAU8318, NXP fsl_rpmsg and i.MX93, Qualcomm AudioReach Enable, MFC and SAL, RealTek RT1318 and Rockchip RK3588 ALSA: - Addition of PCM kselftest; still minimalistic but can be extended in future - Fixes for corner-case XRUNs with USB-audio implicit feedback mode - Usual device-specific quirk updates for USB- and HD-audio - FireWire DICE updates This also contains a few cross-tree updates: - Some OMAP board file updates for removal of relevant OMAP platforms - A new I2C API update for I2C probe API adaption - A DRM update for the further hdmi-codec updates" * tag 'sound-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (417 commits) ALSA: mts64: fix possible null-ptr-defer in snd_mts64_interrupt ALSA: patch_realtek: Fix Dell Inspiron Plus 16 ALSA: hda/cirrus: Add extra 10 ms delay to allow PLL settle and lock. ASoC: dt-bindings: Correct Alexandre Belloni email ASoC: dt-bindings: maxim,max98504: Convert to DT schema ASoC: dt-bindings: maxim,max98357a: Convert to DT schema ASoC: dt-bindings: Reference common DAI properties ASoC: dt-bindings: Extend name-prefix.yaml into common DAI properties ASoC: rt715: Make read-only arrays capture_reg_H and capture_reg_L static const ASoC: uniphier: aio-core: Make some read-only arrays static const ASoC: wcd938x: Make read-only array minCode_param static const ASoC: qcom: lpass-sc7280: Add maybe_unused tag for system PM ops ASoC : SOF: amd: Add support for IPC and DSP dumps ASoC: SOF: amd: Use poll function instead to read ACP_SHA_DSP_FW_QUALIFIER ALSA: usb-audio: Workaround for XRUN at prepare ALSA: pcm: Handle XRUN at trigger START ALSA: pcm: Set missing stop_operating flag at undoing trigger start drm: tda99x: Don't advertise non-existent capture support ASoC: hdmi-codec: Allow playback and capture to be disabled kselftest/alsa: Add more coverage of sample rates and channel counts ...

i2c: ismt: Fix an out-of-bounds bug in ismt_access()

2022-12-07T20:27:08Z

When the driver does not check the data from the user, the variable 'data->block[0]' may be very large to cause an out-of-bounds bug. The following log can reveal it: [ 33.995542] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffcb3dc3a20 [ 33.995978] ismt_smbus 0000:00:05.0: I2C_SMBUS_BLOCK_DATA: WRITE [ 33.996475] ================================================================== [ 33.996995] BUG: KASAN: out-of-bounds in ismt_access.cold+0x374/0x214b [ 33.997473] Read of size 18446744073709551615 at addr ffff88810efcfdb1 by task ismt_poc/485 [ 33.999450] Call Trace: [ 34.001849] memcpy+0x20/0x60 [ 34.002077] ismt_access.cold+0x374/0x214b [ 34.003382] __i2c_smbus_xfer+0x44f/0xfb0 [ 34.004007] i2c_smbus_xfer+0x10a/0x390 [ 34.004291] i2cdev_ioctl_smbus+0x2c8/0x710 [ 34.005196] i2cdev_ioctl+0x5ec/0x74c Fix this bug by checking the size of 'data->block[0]' first. Fixes: 13f35ac14cd0 ("i2c: Adding support for Intel iSMT SMBus 2.0 host controller") Signed-off-by: Zheyu Ma Signed-off-by: Wolfram Sang

i2c: mux: reg: check return value after calling platform_get_resource()

2022-12-07T20:19:32Z

It will cause null-ptr-deref in resource_size(), if platform_get_resource() returns NULL, move calling resource_size() after devm_ioremap_resource() that will check 'res' to avoid null-ptr-deref. And use devm_platform_get_and_ioremap_resource() to simplify code. Fixes: b3fdd32799d8 ("i2c: mux: Add register-based mux i2c-mux-reg") Signed-off-by: Yang Yingliang Signed-off-by: Wolfram Sang