From: Nikita Shubin <nikita.shubin@maquefel.me>
To: Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Alexander Sverdlin <alexander.sverdlin@gmail.com>
Cc: linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org,
devicetree@vger.kernel.org,
Nikita Shubin <nikita.shubin@maquefel.me>,
Arnd Bergmann <arnd@arndb.de>,
Linus Walleij <linus.walleij@linaro.org>
Subject: [PATCH v2 1/4] ARM: ep93xx: add regmap aux_dev
Date: Sun, 14 Apr 2024 13:03:48 +0300 [thread overview]
Message-ID: <20240408-ep93xx-clk-v2-1-9c5629dec2dd@maquefel.me> (raw)
In-Reply-To: <20240408-ep93xx-clk-v2-0-9c5629dec2dd@maquefel.me>
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>
---
include/linux/soc/cirrus/ep93xx.h | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/include/linux/soc/cirrus/ep93xx.h b/include/linux/soc/cirrus/ep93xx.h
index 56fbe2dc59b1..a27447971302 100644
--- a/include/linux/soc/cirrus/ep93xx.h
+++ b/include/linux/soc/cirrus/ep93xx.h
@@ -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);
--
2.41.0
next prev parent reply other threads:[~2024-04-14 10:03 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-14 10:03 [PATCH v2 0/4] DONOTMERGE: ep93xx-clk from ep93xx device tree conversion Nikita Shubin
2024-04-14 10:03 ` Nikita Shubin [this message]
2024-04-14 10:03 ` [PATCH v2 2/4] clk: ep93xx: add DT support for Cirrus EP93xx Nikita Shubin
2024-04-14 10:03 ` [PATCH v2 3/4] dt-bindings: soc: Add " Nikita Shubin
2024-04-14 10:03 ` [PATCH v2 4/4] soc: Add SoC driver for Cirrus ep93xx Nikita Shubin
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