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path: root/drivers/pinctrl/sh-pfc/pinctrl.c
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* sh-pfc: Configure pins as GPIOs at request time when handled externallyLaurent Pinchart2013-04-02
| | | | | | | | | When a GPIO is handled by a separate driver the pinmux gpio_set_direction() handler won't be called. The pin mux type then need to be configured to GPIO at request time. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* sh-pfc: Return an error if a pin doesn't support the requested directionLaurent Pinchart2013-03-15
| | | | | | | | | | | When setting a pin direction verify that the requested direction is supported, and return an error if it isn't. This requires pin configuration information to be supplied by SoC data. The check is a no-op if the information is not supplied. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* sh-pfc: Convert message printing from pr_* to dev_*Laurent Pinchart2013-03-15
| | | | | Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* sh-pfc: Clean up pin configuration type handlingLaurent Pinchart2013-03-15
| | | | | | | | | | | | | | | | | | Set pin configuration type to - PINMUX_TYPE_NONE at initialization time and when disabling a function or freeing a GPIO - PINMUX_TYPE_FUNCTION when enabling a function - PINMUX_TYPE_INPUT or PINMUX_TYPE_OUTPUT when setting the GPIO direction Verify that the type is PINMUX_TYPE_NONE when enabling a function or requesting a GPIO and return -EBUSY if it isn't. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* sh-pfc: Merge sh_pfc_reconfig_pin() into sh_pfc_gpio_set_direction()Laurent Pinchart2013-03-15
| | | | | | | | The sh_pfc_reconfig_pin() is only called from a single location. Merge it into its call site to make the code easier to follow. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* sh-pfc: Implement generic pinconf supportLaurent Pinchart2013-03-15
| | | | | | | | | | The existing PFC pinconf implementation, tied to the PFC-specific pin types, isn't used by drivers or boards. Replace it with the generic pinconf types to implement bias (pull-up/down) setup. Other pin configuration options can be implemented later if needed. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* sh-pfc: Use proper error codesLaurent Pinchart2013-03-15
| | | | | | | Return proper error codes instead of -1, and propagate the error codes. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* sh-pfc: Constify all SoC dataLaurent Pinchart2013-03-15
| | | | | | | None of the SoC data need to be modified. Constify it. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* sh-pfc: Remove configuration dry-run and freeLaurent Pinchart2013-03-15
| | | | | | | | | | | The purpose of the dry-run is to ensure that a pin about to be configured isn't in use. However, the current implementation is a no-op. This proves that the dry-run isn't essential. Remove it. Freeing configuration then becomes a no-op as well. Remove it. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* sh-pfc: Don't modify sh_pfc_pin SoC dataLaurent Pinchart2013-03-15
| | | | | | | | | | | The sh_pfc_pin structure supplied in SoC data contains information about pin configuration and name. It's abused to store GPIO data registers information and pin config type. Move those fields out of the pinmux_data_reg structure into the new sh_pfc_gpio_pin and sh_pfc_pin_config structures. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* sh-pfc: Fix return value check in sh_pfc_register_pinctrl()Wei Yongjun2013-03-15
| | | | | | | | | | In case of error, the function pinctrl_register() returns NULL not ERR_PTR(). The IS_ERR() test in the return value check should be replaced with NULL test. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* sh-pfc: Expose real groups and functions in pinctrl/pinmux operationsLaurent Pinchart2013-03-15
| | | | | | | | | | | | | The sh-pfc driver exposes one fake group and function per GPIO pin. As the pinctrl and pinmux APIs are not used by any SuperH and SH Mobile board or driver, drop the fake groups and functions and replace them by a real pinctrl and pinmux implementation. Groups and functions must now be explicitly provided by PFC SoC-specific data. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* sh-pfc: Add support for sparse pin numbersLaurent Pinchart2013-03-15
| | | | | | | | | | | | | The PFC driver assumes that the value of the GPIO_PORTxxx enumeration names are equal to the port number. This isn't true when the port number space is sparse, as with the SH73A0. Fix the issue by adding support for pin numbers ranges specified through SoC data. When no range is specified the driver considers that the PFC implements a single contiguous range for all pins. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* sh-pfc: Replace pinctrl_add_gpio_range() with gpiochip_add_pin_range()Laurent Pinchart2013-03-15
| | | | | | | | Adding a GPIO range to a pinctrl device logically belongs to the GPIO driver. Switch to the right API. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* sh-pfc: Add function to retrieve a pin instance from its pin numberLaurent Pinchart2013-03-15
| | | | | | | | This prepares support for sparse pin numbering. The function currently just performs and indexed lookup in the pins array. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* sh-pfc: Use pinmux identifiers in the pin muxing APILaurent Pinchart2013-03-15
| | | | | | | | | | | The PFC core exposes a sh_pfc_config_gpio() function that configures pinmuxing for a given GPIO (either a real GPIO or a function GPIO). Handling of real and function GPIOs belong to the GPIO layer, move the GPIO number to mark translation to the caller and rename the function to sh_pfc_config_mux(). Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* sh-pfc: Rename struct pinmux_pin to struct sh_pfc_pinLaurent Pinchart2013-03-15
| | | | | | | And drop the pinmux_flag_t typedef. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* sh-pfc: Split pins and functions definition tablesLaurent Pinchart2013-03-15
| | | | | | | | | | | Split the GPIOs table into a pins table for real GPIOs and a functions table for function GPIOs. Only register pins with the pinctrl core. The function GPIOs remain accessible as GPIOs. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* sh-pfc: Shrink the pinctrl GPIO range to include real GPIOs onlyLaurent Pinchart2013-03-15
| | | | | | | | | As a step towards GPIO function removal, shorten the GPIO range registered with the pinctrl core. Function GPIOs are now handled in the GPIO handlers directly instead of going through the pinctrl API. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* sh-pfc: Initialize pinmux_gpio flags staticallyLaurent Pinchart2013-03-15
| | | | | | | | | | | | | | All function GPIO entries are initialized with the GPIO_FN macro that expands to the PINMUX_GPIO macro, used to initialize real GPIOs. Create a PINMUX_GPIO_FN macro that duplicates PINMUX_GPIO and sets flags to PINMUX_TYPE_FUNCTION and use it in GPIO_FN, and make PINMUX_GPIO set flags to PINMUX_TYPE_GPIO. This removes the need to initialize GPIO flags at runtime and thus simplifies the code, preparing for the GPIO and functions split. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* sh-pfc: Replace first_gpio and last_gpio with nr_gpiosLaurent Pinchart2013-03-15
| | | | | | | | | | The SoC information first_gpio field is always equal to 0, and the last_gpio field is the index of the last entry in the pinmux_gpios array. Replace the first_gpio and last_gpio fields by a nr_gpios field, and initialize it to ARRAY_SIZE(pinmux_gpios). Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* sh-pfc: Don't take the sh_pfc spinlock in sh_pfc_map_gpios()Laurent Pinchart2013-03-15
| | | | | | | | | The sh_pfc_map_gpios() function is only called at initialization time when no other task can access the sh_pfc fields. Don't protect the operation with a spinlock. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* sh-pfc: Drop the sh_pfc_pinctrl spinlockLaurent Pinchart2013-03-15
| | | | | | | | The spinlock is used to protect data that is only accessed sequentially during initialization. Remove it. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* sh-pfc: Don't define the per-device pinctrl struct instances as globalLaurent Pinchart2013-03-15
| | | | | | | | | The pinctrl_desc and pinctrl_gpio_range structures registered with the pinctrl core are per-device instances. Move them to the dynamically allocated sh_pfc_pinctrl structure and initialize them at runtime. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* sh-pfc: Declare operation structures as constLaurent Pinchart2013-03-15
| | | | | | | | The pinconf, pinctrl and pinmux operation structures hold function pointers that are never modified. Declare them as const. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* sh-pfc: Move sh_pfc.h from include/linux/ to driver directoryLaurent Pinchart2013-01-24
| | | | | | | | | | The header file isn't used by arch code anymore. Make it private to the driver. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* sh-pfc: Support pinmux info in driver data instead of platform dataLaurent Pinchart2013-01-24
| | | | | | | | | | | | | | | Pinmux information should be provided by the pinmux driver, not arch code. Make it possible to do so by supporting pinmux information passed through the driver_data field in the platform ID table. Platform data will remain supported until all arch code has been converted. Rename the sh_pfc_platform_data structure to sh_pfc_soc_info to reflect this. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* sh-pfc: Move driver from drivers/sh/ to drivers/pinctrl/Laurent Pinchart2013-01-24
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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