linux-stable.git/drivers/i2c, branch v5.11.4

i2c: exynos5: Preserve high speed master code

2021-03-04T11:15:15+00:00

[ Upstream commit f4ff0104d4c807a7f96aa3358c03d694895ee8ea ]

When the driver starts to send a message with the MASTER_ID field
set (high speed), the whole I2C_ADDR register is overwritten including
MASTER_ID as the SLV_ADDR_MAS field is set.

This patch preserves already written fields in I2C_ADDR when writing
SLV_ADDR_MAS.

Fixes: 8a73cd4cfa15 ("i2c: exynos5: add High Speed I2C controller driver")
Signed-off-by: Mårten Lindahl 
Reviewed-by: Krzysztof Kozlowski 
Tested-by: Krzysztof Kozlowski 
Signed-off-by: Wolfram Sang 
Signed-off-by: Sasha Levin

i2c: brcmstb: Fix brcmstd_send_i2c_cmd condition

2021-03-04T11:15:15+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

2021-03-04T11:14:49+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

2021-03-04T11:14:32+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)

2021-03-04T11:14:32+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

2021-03-04T11:14:32+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

2021-02-12T10:36:40+00:00

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

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

2021-01-28T09:54:45+00:00

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

i2c: sprd: depend on COMMON_CLK to fix compile tests

2021-01-22T09:13:33+00:00

The I2C_SPRD uses Common Clock Framework thus it cannot be built on
platforms without it (e.g. compile test on MIPS with LANTIQ):

    /usr/bin/mips-linux-gnu-ld: drivers/i2c/busses/i2c-sprd.o: in function `sprd_i2c_probe':
    i2c-sprd.c:(.text.sprd_i2c_probe+0x254): undefined reference to `clk_set_parent'

Fixes: 4a2d5f663dab ("i2c: Enable compile testing for more drivers")
Reported-by: kernel test robot 
Signed-off-by: Krzysztof Kozlowski 
Reviewed-by: Baolin Wang 
Signed-off-by: Wolfram Sang

Revert "i2c: imx: Remove unused .id_table support"

2021-01-22T08:49:04+00:00

Coldfire platforms are non-DT users of this driver, so
keep the .id_table support.

This reverts commit c610199cd392e6e2d41811ef83d85355c1b862b3.

Fixes: c610199cd392 (i2c: imx: Remove unused .id_table support")
Reported-by: Sascha Hauer 
Signed-off-by: Fabio Estevam 
Signed-off-by: Wolfram Sang