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path: root/drivers/gpio/gpio-xtensa.c (follow)
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* gpio: convert remaining users to gpiochip_add_data()Linus Walleij2016-01-051-2/+2
| | | | | | | | For completion, sweep the floor from all gpiochip_add() usage so we can remove that function and get rid of the function wrapper gpiochip_add(). Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: drop owner assignment from platform_driversWolfram Sang2014-10-201-1/+0
| | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* gpio: xtensa: fix build when XCHAL_HAVE_CP is 0Baruch Siach2014-02-031-0/+16
| | | | | | | | | | | In xtensa coprocessors may exist without coprocessor context, i.e. they cannot be disabled/enabled. In this case the RSR_CPENABLE/WSR_CPENABLE are undefined, thus breaking the build. Fix the build by adding dummy versions of enable_cp/disable_cp in this case. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: driver for Xtensa GPIO32Baruch Siach2013-12-121-0/+163
GPIO32 is a standard optional extension to the Xtensa architecture core that provides preconfigured output and input ports for intra SoC signaling. The GPIO32 option is implemented as 32bit Tensilica Instruction Extension (TIE) output state called EXPSTATE, and 32bit input wire called IMPWIRE. This driver treats input and output states as two distinct devices. v3: * Use BUG() in xtensa_impwire_set_value() to indicate that it should never be called (Linus Walleij) v2: * Address the comments of Linus Walleij: - Add a few comments - Expand commit log message - Use the BIT() macro for bit offsets - Rewrite CPENABLE handling as static inlines - Use device_initcall() * Depend on !SMP for reason explained in the comments (Marc Gauthier) * Use XCHAL_CP_ID_XTIOP to enable/disable GPIO32 only Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>