Commit ede5bbe4 authored by Nikita Shubin's avatar Nikita Shubin Committed by Arnd Bergmann
Browse files

ARM: ep93xx: add regmap aux_dev 



The following driver's should be instantiated by ep93xx syscon driver:

- reboot
- pinctrl
- clock

They all require access to DEVCFG register with a shared lock held, to
avoid conflict writing to swlocked parts of DEVCFG.

Provide common resources such as base, regmap and spinlock via auxiliary
bus framework.

Signed-off-by: default avatarNikita Shubin <nikita.shubin@maquefel.me>
Tested-by: default avatarAlexander Sverdlin <alexander.sverdlin@gmail.com>
Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Reviewed-by: default avatarStephen Boyd <sboyd@kernel.org>
Acked-by: default avatarVinod Koul <vkoul@kernel.org>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent cbe8e464

include/linux/soc/cirrus/ep93xx.h

+26 −0
Original line number Diff line number Diff line
@@ -3,6 +3,18 @@ 
#define _SOC_EP93XX_H



struct platform_device;

struct regmap;

struct spinlock_t;



enum ep93xx_soc_model {

	EP93XX_9301_SOC,

	EP93XX_9307_SOC,

	EP93XX_9312_SOC,

};



#include <linux/auxiliary_bus.h>

#include <linux/compiler_types.h>

#include <linux/container_of.h>



#define EP93XX_CHIP_REV_D0	3

#define EP93XX_CHIP_REV_D1	4
@@ -10,6 +22,20 @@ struct platform_device; 
#define EP93XX_CHIP_REV_E1	6

#define EP93XX_CHIP_REV_E2	7



struct ep93xx_regmap_adev {

	struct auxiliary_device adev;

	struct regmap *map;

	void __iomem *base;

	spinlock_t *lock;

	void (*write)(struct regmap *map, spinlock_t *lock, unsigned int reg,

		      unsigned int val);

	void (*update_bits)(struct regmap *map, spinlock_t *lock,

			    unsigned int reg, unsigned int mask, unsigned int val);

};



#define to_ep93xx_regmap_adev(_adev) \

	container_of((_adev), struct ep93xx_regmap_adev, adev)



#ifdef CONFIG_ARCH_EP93XX

int ep93xx_pwm_acquire_gpio(struct platform_device *pdev);

void ep93xx_pwm_release_gpio(struct platform_device *pdev);