kernel/linux.git/drivers/i2c, branch v5.4.113

i2c: turn recovery error on init to debug

2021-04-14T06:24:13+00:00

commit e409a6a3e0690efdef9b8a96197bc61ff117cfaf upstream. In some configurations, recovery is optional. So, don't throw an error when it is not used because e.g. pinctrl settings for recovery are not provided. Reword the message and make it debug output. Reported-by: Klaus Kudielka Tested-by: Klaus Kudielka Signed-off-by: Wolfram Sang Signed-off-by: Wolfram Sang Cc: stable@kernel.org Signed-off-by: Greg Kroah-Hartman

i2c: rcar: optimize cacheline to minimize HW race condition

2021-03-17T16:03:41+00:00

[ Upstream commit 25c2e0fb5fefb8d7847214cf114d94c7aad8e9ce ] 'flags' and 'io' are needed first, so they should be at the beginning of the private struct. Signed-off-by: Wolfram Sang Reviewed-by: Niklas Söderlund Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin

i2c: rcar: faster irq code to minimize HW race condition

2021-03-17T16:03:41+00:00

[ Upstream commit c7b514ec979e23a08c411f3d8ed39c7922751422 ] To avoid the HW race condition on R-Car Gen2 and earlier, we need to write to ICMCR as soon as possible in the interrupt handler. We can improve this by writing a static value instead of masking out bits. Signed-off-by: Wolfram Sang Reviewed-by: Niklas Söderlund Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin

i2c: brcmstb: Fix brcmstd_send_i2c_cmd condition

2021-03-04T09:26:39+00:00

[ Upstream commit a1858ce0cfe31368b23ba55794e409fb57ced4a4 ] The brcmstb_send_i2c_cmd currently has a condition that is (CMD_RD || CMD_WR) which always evaluates to true, while the obvious fix is to test whether the cmd variable passed as parameter holds one of these two values. Fixes: dd1aa2524bc5 ("i2c: brcmstb: Add Broadcom settop SoC i2c controller driver") Reported-by: Dave Stevenson Signed-off-by: Maxime Ripard Acked-by: Florian Fainelli Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin

i2c: qcom-geni: Store DMA mapping data in geni_i2c_dev struct

2021-03-04T09:26:32+00:00

[ Upstream commit 357ee8841d0b7bd822f25fc768afbc0c2ab7e47b ] Store DMA mapping data in geni_i2c_dev struct to enhance DMA mapping data scope. For example during shutdown callback to unmap DMA mapping, this stored DMA mapping data can be used to call geni_se_tx_dma_unprep and geni_se_rx_dma_unprep functions. Add two helper functions geni_i2c_rx_msg_cleanup and geni_i2c_tx_msg_cleanup to unwrap the things after rx/tx FIFO/DMA transfers, so that the same can be used in geni_i2c_stop_xfer() function during shutdown callback. Signed-off-by: Roja Rani Yarubandi Reviewed-by: Akash Asthana Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin

i2c: iproc: handle master read request

2021-03-04T09:26:27+00:00

[ Upstream commit e21d79778768e4e187b2892d662c6aaa01e1d399 ] Handle single or multi byte master read request with or without repeated start. Fixes: c245d94ed106 ("i2c: iproc: Add multi byte read-write support for slave mode") Signed-off-by: Rayagonda Kokatanur Acked-by: Ray Jui Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin

i2c: iproc: update slave isr mask (ISR_MASK_SLAVE)

2021-03-04T09:26:27+00:00

[ Upstream commit 603e77af7b0704bdb057de0368f1f2b04fc9552c ] Update slave isr mask (ISR_MASK_SLAVE) to include remaining two slave interrupts. Fixes: c245d94ed106 ("i2c: iproc: Add multi byte read-write support for slave mode") Signed-off-by: Rayagonda Kokatanur Acked-by: Ray Jui Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin

i2c: iproc: handle only slave interrupts which are enabled

2021-03-04T09:26:27+00:00

[ Upstream commit 545f4011e156554d704d6278245d54543f6680d1 ] Handle only slave interrupts which are enabled. The IS_OFFSET register contains the interrupt status bits which will be set regardless of the enabling of the corresponding interrupt condition. One must therefore look at both IS_OFFSET and IE_OFFSET to determine whether an interrupt condition is set and enabled. Fixes: c245d94ed106 ("i2c: iproc: Add multi byte read-write support for slave mode") Signed-off-by: Rayagonda Kokatanur Acked-by: Ray Jui Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin

i2c: stm32f7: fix configuration of the digital filter

2021-02-17T09:35:18+00:00

[ Upstream commit 3d6a3d3a2a7a3a60a824e7c04e95fd50dec57812 ] The digital filter related computation are present in the driver however the programming of the filter within the IP is missing. The maximum value for the DNF is wrong and should be 15 instead of 16. Fixes: aeb068c57214 ("i2c: i2c-stm32f7: add driver") Signed-off-by: Alain Volmat Signed-off-by: Pierre-Yves MORDRET Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin

i2c: mediatek: Move suspend and resume handling to NOIRQ phase

2021-02-13T12:52:56+00:00

[ Upstream commit de96c3943f591018727b862f51953c1b6c55bcc3 ] Some i2c device driver indirectly uses I2C driver when it is now being suspended. The i2c devices driver is suspended during the NOIRQ phase and this cannot be changed due to other dependencies. Therefore, we also need to move the suspend handling for the I2C controller driver to the NOIRQ phase as well. Signed-off-by: Qii Wang Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin