kernel/git/stable/linux.git/drivers/i2c, branch linux-5.16.y

i2c: mux: demux-pinctrl: do not deactivate a master that is not active

2022-04-08T12:06:19+00:00

[ Upstream commit 1a22aabf20adf89cb216f566913196128766f25b ] Attempting to rollback the activation of the current master when the current master has not been activated is bad. priv->cur_chan and priv->cur_adap are both still zeroed out and the rollback may result in attempts to revert an of changeset that has not been applied and do result in calls to both del and put the zeroed out i2c_adapter. Maybe it crashes, or whatever, but it's bad in any case. Fixes: e9d1a0a41d44 ("i2c: mux: demux-pinctrl: Fix an error handling path in 'i2c_demux_pinctrl_probe()'") Signed-off-by: Peter Rosin Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin

i2c: meson: Fix wrong speed use from probe

2022-04-08T12:06:19+00:00

[ Upstream commit cb13aa16f34f794a9cee2626862af8a95f0f0ee9 ] Having meson_i2c_set_clk_div after i2c_add_adapter causes issues for client drivers that try to use the bus before the requested speed is applied. The bus can be used just after i2c_add_adapter, so move i2c_add_adapter to the final step as meson_i2c_set_clk_div needs to be called before the bus is used. Fixes: 09af1c2fa490 ("i2c: meson: set clock divider in probe instead of setting it for each transfer") Signed-off-by: Lucas Tanure Reviewed-by: Neil Armstrong Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin

i2c: xiic: Make bus names unique

2022-04-08T12:06:13+00:00

[ Upstream commit 1d366c2f9df8279df2adbb60471f86fc40a1c39e ] This driver is for an FPGA logic core, so there can be arbitrarily many instances of the bus on a given system. Previously all of the I2C bus names were "xiic-i2c" which caused issues with lm_sensors when trying to map human-readable names to sensor inputs because it could not properly distinguish the busses, for example. Append the platform device name to the I2C bus name so it is unique between different instances. Fixes: e1d5b6598cdc ("i2c: Add support for Xilinx XPS IIC Bus Interface") Signed-off-by: Robert Hancock Tested-by: Michal Simek Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin

i2c: pasemi: Drop I2C classes from platform driver variant

2022-04-08T12:06:06+00:00

[ Upstream commit 19e138e43a0820bb4dbf8fb5c7691f82e9221f2b ] Drop I2C device-probing classes from platform variant of the PASemi controller as it is only used on platforms where I2C devices should be instantiated in devicetree. (The I2C_CLASS_DEPRECATED flag is not raised as up to this point no devices relied on the old behavior.) Fixes: d88ae2932df0 ("i2c: pasemi: Add Apple platform driver") Signed-off-by: Martin Povišer Reviewed-by: Sven Peter Acked-by: Hector Martin Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin

i2c: bcm2835: Fix the error handling in 'bcm2835_i2c_probe()'

2022-04-08T12:06:04+00:00

[ Upstream commit b205f5850263632b6897d8f0bfaeeea4955f8663 ] Some resource should be released if an error occurs in 'bcm2835_i2c_probe()'. Add an error handling path and the needed 'clk_disable_unprepare()' and 'clk_rate_exclusive_put()' calls. While at it, rework the bottom of the function to use this newly added error handling path and have an explicit and more standard "return 0;" at the end of the normal path. Fixes: bebff81fb8b9 ("i2c: bcm2835: Model Divider in CCF") Signed-off-by: Christophe JAILLET [wsa: rebased] Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin

i2c: bcm2835: Use platform_get_irq() to get the interrupt

2022-04-08T12:06:04+00:00

[ Upstream commit c3b2f911ac11892b672df7829becf28d3a830073 ] platform_get_resource(pdev, IORESOURCE_IRQ, ..) relies on static allocation of IRQ resources in DT core code, this causes an issue when using hierarchical interrupt domains using "interrupts" property in the node as this bypasses the hierarchical setup and messes up the irq chaining. In preparation for removal of static setup of IRQ resource from DT core code use platform_get_irq(). Signed-off-by: Lad Prabhakar Reviewed-by: Florian Fainelli Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin

i2c: qup: allow COMPILE_TEST

2022-03-08T18:14:03+00:00

[ Upstream commit 5de717974005fcad2502281e9f82e139ca91f4bb ] Driver builds fine with COMPILE_TEST. Enable it for wider test coverage and easier maintenance. Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin

i2c: imx: allow COMPILE_TEST

2022-03-08T18:14:03+00:00

[ Upstream commit 2ce4462f2724d1b3cedccea441c6d18bb360629a ] Driver builds fine with COMPILE_TEST. Enable it for wider test coverage and easier maintenance. Signed-off-by: Wolfram Sang Acked-by: Oleksij Rempel Signed-off-by: Sasha Levin

i2c: cadence: allow COMPILE_TEST

2022-03-08T18:14:03+00:00

[ Upstream commit 0b0dcb3882c8f08bdeafa03adb4487e104d26050 ] Driver builds fine with COMPILE_TEST. Enable it for wider test coverage and easier maintenance. Signed-off-by: Wolfram Sang Acked-by: Michal Simek Signed-off-by: Sasha Levin

i2c: bcm2835: Avoid clock stretching timeouts

2022-03-08T18:14:01+00:00

[ Upstream commit 9495b9b31abe525ebd93da58de2c88b9f66d3a0e ] The CLKT register contains at poweron 0x40, which at our typical 100kHz bus rate means .64ms. But there is no specified limit to how long devices should be able to stretch the clocks, so just disable the timeout. We still have a timeout wrapping the entire transfer. Signed-off-by: Eric Anholt Signed-off-by: Stefan Wahren BugLink: https://github.com/raspberrypi/linux/issues/3064 Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin