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2019-06-29i2c: core: Tidy up handling of init_irqCharles Keepax1-2/+3
Only set init_irq during i2c_device_new and only handle client->irq on the probe/remove paths. Suggested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-06-29i2c: core: Move ACPI gpio IRQ handling into i2c_acpi_get_irqCharles Keepax2-3/+3
It makes sense to contain all the ACPI IRQ handling in a single helper function. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-06-29i2c: core: Move ACPI IRQ handling to probe timeCharles Keepax3-7/+21
Bring the ACPI path in sync with the device tree path and handle all the IRQ fetching at probe time. This leaves the only IRQ handling at device registration time being that which is passed directly through the board info as either a resource or an actual IRQ number. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-06-29i2c: acpi: Factor out getting the IRQ from ACPICharles Keepax1-8/+21
In preparation for future refactoring factor out the fetch of the IRQ into its own helper function. Whilst we are at it update the handling to return the actual error code returned from acpi_dev_get_resources as well. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-06-29i2c: acpi: Use available IRQ helper functionsCharles Keepax1-9/+13
Use the available IRQ helper functions, most of the functions have additional helpful side affects like configuring the trigger type of the IRQ. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-06-29i2c: core: Allow whole core to use i2c_dev_irq_from_resourcesCharles Keepax2-2/+4
Remove the static from i2c_dev_irq_from _resources so that other parts of the core code can use this helper function. Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-06-27eeprom: at24: modify a comment referring to platform dataBartosz Golaszewski1-2/+2
We no longer have platform data in at24, so this comment is invalid. Make it refer to device tree & properties instead. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Acked-by: Wolfram Sang <wsa@the-dreams.de>
2019-06-26dt-bindings: i2c: omap: Add new compatible for J721E SoCsPeter Ujfalusi1-0/+1
J721E SoCs have same I2C IP as OMAP SoCs. Add new compatible to handle J721E SoCs. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-06-26dt-bindings: i2c: mv64xxx: Add YAML schemasMaxime Ripard2-64/+124
Switch the DT binding to a YAML schema to enable the DT validation. Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com> Reviewed-by: Rob Herring <robh@kernel.org> Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-06-26dt-bindings: i2c: sun6i-p2wi: Add YAML schemasMaxime Ripard2-41/+65
Switch the DT binding to a YAML schema to enable the DT validation. Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-06-26i2c: mt7621: Add MediaTek MT7621/7628/7688 I2C driverStefan Roese4-0/+372
This patch adds a driver for the I2C controller found on the MediaTek MT7621/7628/7688 SoC's. The base version of this driver was done by Steven Liu (according to the copyright and MODULE_AUTHOR lines). It can be found in the OpenWRT repositories (v4.14 at the time I looked). The base driver had many issues, which are disccussed here: https://en.forum.labs.mediatek.com/t/openwrt-15-05-loads-non-working-i2c-kernel-module-for-mt7688/1286/3 >From this link an enhanced driver version (complete rewrite, mayor changes: support clock stretching, repeated start, ACK handling and unlimited message length) from Jan Breuer can be found here: https://gist.github.com/j123b567/9b555b635c2b4069d716b24198546954 This patch now adds this enhanced I2C driver to mainline. Changes by Stefan Roese for upstreaming: - Add devicetree bindings - checkpatch clean - Use module_platform_driver() - Minor cosmetic enhancements - Removed IO warpped functions - Use readl_relaxed_poll_timeout() and drop poll_down_timeout() - Removed superfluous barrier() in mtk_i2c_reset() - Use i2c_8bit_addr_from_msg() - Added I2C_FUNC_PROTOCOL_MANGLING - Removed adap->class = I2C_CLASS_HWMON | I2C_CLASS_SPD; Signed-off-by: Stefan Roese <sr@denx.de> Tested-by: René van Dorst <opensource@vdorst.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>