Hosts the 0x221E linux distro kernel. https://git.0xinfinity.dev/distro/kernel.git/atom?h=linux-4.4.y 2016-11-26T08:54:52Z 2016-11-26T08:54:52Z Linus Walleij 2016-11-14T14:34:17Z urn:sha1:936d157fa7ae3085a37bfce53c6aad8a2ad3b405 commit 93d710a65ef02fb7fd48ae207e78f460bd7a6089 upstream. We get the following build error from UM Linux after adding an entry to drivers/iio/gyro/Kconfig that issues "select I2C_MUX": ERROR: "devm_ioremap_resource" [drivers/i2c/muxes/i2c-mux-reg.ko] undefined! ERROR: "of_address_to_resource" [drivers/i2c/muxes/i2c-mux-reg.ko] undefined! It appears that the I2C mux core code depends on HAS_IOMEM for historical reasons, while CONFIG_I2C_MUX_REG does *not* have a direct dependency on HAS_IOMEM. This creates a situation where a allyesconfig or allmodconfig for UM Linux will select I2C_MUX, and will implicitly enable I2C_MUX_REG as well, and the compilation will fail for the register driver. Fix this up by making I2C_MUX_REG depend on HAS_IOMEM and removing the dependency from I2C_MUX. Reported-by: kbuild test robot <fengguang.wu@intel.com> Reported-by: Jonathan Cameron <jic23@jic23.retrosnub.co.uk> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jonathan Cameron <jic23@kernel.org> Acked-by: Peter Rosin <peda@axentia.se> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2016-08-10T09:49:29Z Lukasz Gemborowski 2016-06-27T10:57:47Z urn:sha1:1b0b5ca8f498a29c8646a3fd3bd5accbb8f8a156 commit 22ebf00eb56fe77922de8138aa9af9996582c2b3 upstream. of_address_to_resource return 0 on successful call but devm_ioremap_resource is called only if it returns non-zero value Signed-off-by: Lukasz Gemborowski <lukasz.gemborowski@nokia.com> Reviewed-by: Alexander Sverdlin <alexander.sverdlin@nokia.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2015-09-03T09:58:42Z York Sun 2015-09-02T16:40:46Z urn:sha1:5a73882fd2c3a86b502d54da532d373a1f2db15e Reading the register (if allowed) after writing is to ensure writing is completed on a posted bus. The endianness of reading doesn't matter. Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> 2015-09-03T09:56:23Z Mike Rapoport 2015-09-02T08:03:41Z urn:sha1:a05a34e7f6ff4a942186e99932885b10c6bc1d1a With CONFIG_OF=n, the following warnings occur when compiling drivers/i2c/muxes/i2c-mux-reg.c: CC drivers/i2c/muxes/i2c-mux-reg.o drivers/i2c/muxes/i2c-mux-reg.c:170:13: warning: ‘struct gpiomux’ declared inside parameter list [enabled by default] struct platform_device *pdev) ^ drivers/i2c/muxes/i2c-mux-reg.c:170:13: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default] drivers/i2c/muxes/i2c-mux-reg.c: In function ‘i2c_mux_reg_probe’: drivers/i2c/muxes/i2c-mux-reg.c:201:3: warning: passing argument 1 of ‘i2c_mux_reg_probe_dt’ from incompatible pointer type [enabled by default] ret = i2c_mux_reg_probe_dt(mux, pdev); ^ Signed-off-by: Mike Rapoport <mike.rapoport@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> 2015-09-03T09:54:41Z Wolfram Sang 2015-08-20T21:40:46Z urn:sha1:fce388afd633cdf20844e17f47b0d97c7ee06e69 Checking was done at three different locations, just do it once and properly at probing time. Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Tested-by: York Sun <yorksun@freescale.com> 2015-08-31T20:40:34Z Vladimir Zapolskiy 2015-08-26T20:59:33Z urn:sha1:bdbf4a29ee5bbe5b6743ba47bc7b10ec2cba8b21 Every call of of_parse_phandle() increments user count of found device node, if OF_DYNAMIC is enabled. The change fixes all similar addressed cases in drivers/i2c. Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> 2015-08-24T12:05:18Z York Sun 2015-08-17T18:53:48Z urn:sha1:b3fdd32799d834e2626fae087906e886037350c6 Based on i2c-mux-gpio driver, similarly the register-based mux switch from one bus to another by setting a single register. The register can be on PCIe bus, local bus, or any memory-mapped address. The endianness of such register can be specified in device tree if used, or in platform data. Signed-off-by: York Sun <yorksun@freescale.com> Acked-by: Alexander Sverdlin <alexander.sverdlin@nokia.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> 2015-08-10T06:37:36Z Vladimir Zapolskiy 2015-07-27T14:30:51Z urn:sha1:0d1ad98dd837c069572d16faf77fa7f50748c7d5 This change is needed to properly lock I2C parent bus driver. Prior to this change i2c_put_adapter() is misused, which may lead to an overflow over zero of I2C bus driver user counter. Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> 2015-08-10T06:37:35Z Krzysztof Kozlowski 2015-07-10T05:52:31Z urn:sha1:069d5b745b2a98ebc8c239fe0b7bdb6c5ff0f475 i2c_driver does not need to set an owner because i2c_register_driver() will set it. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> 2015-06-17T12:35:38Z Alexander Sverdlin 2015-06-12T12:41:00Z urn:sha1:0a8237ae319ab5988d40a7a9b33d68846aae34b4 pca9541 and pca954x are calling master_xfer() of the parent adapter directly thus bypassing the quirks checks of the adapter. Use __i2c_transfer() instead. Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com> Tested-by: Łukasz Gemborowski <lukasz.gemborowski@nokia.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jisheng Zhang <jszhang@marvell.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Cc: stable@kernel.org Fixes: b7f625840267b1 ("i2c: add quirk checks to core")