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ARM: ep93xx: add regmap aux_dev

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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: Nikita Shubin <nikita.shubin@maquefel.me>
Tested-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Nikita Shubin
2024-09-09 11:10:27 +03:00
committed by Arnd Bergmann
parent cbe8e464eb
commit ede5bbe488
1 changed files with 26 additions and 0 deletions
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26
include/linux/soc/cirrus/ep93xx.h
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@@ -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);