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pinctrl: spacemit: add support for SpacemiT K1 SoC

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SpacemiT's K1 SoC has a pinctrl controller which use single register
to describe all functions, which include bias pull up/down(strong pull),
drive strength, schmitter trigger, slew rate, mux mode.

Signed-off-by: Yixun Lan <dlan@gentoo.org>
Link: https://lore.kernel.org/20241016-02-k1-pinctrl-v5-2-03d395222e4f@gentoo.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Yixun Lan 2024-10-16 08:59:42 +08:00 committed by Linus Walleij
parent 97b7675640
commit a83c29e1d1
6 changed files with 1113 additions and 0 deletions
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1
drivers/pinctrl/Kconfig
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@ -631,6 +631,7 @@ source "drivers/pinctrl/realtek/Kconfig"
source "drivers/pinctrl/renesas/Kconfig"
source "drivers/pinctrl/samsung/Kconfig"
source "drivers/pinctrl/sophgo/Kconfig"
source "drivers/pinctrl/spacemit/Kconfig"
source "drivers/pinctrl/spear/Kconfig"
source "drivers/pinctrl/sprd/Kconfig"
source "drivers/pinctrl/starfive/Kconfig"

1
drivers/pinctrl/Makefile
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@ -78,6 +78,7 @@ obj-$(CONFIG_ARCH_REALTEK) += realtek/
obj-$(CONFIG_PINCTRL_RENESAS) += renesas/
obj-$(CONFIG_PINCTRL_SAMSUNG) += samsung/
obj-y += sophgo/
obj-y += spacemit/
obj-$(CONFIG_PINCTRL_SPEAR) += spear/
obj-y += sprd/
obj-$(CONFIG_SOC_STARFIVE) += starfive/

17
drivers/pinctrl/spacemit/Kconfig Normal file
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@ -0,0 +1,17 @@
# SPDX-License-Identifier: GPL-2.0-only
#
# Sophgo SoC PINCTRL drivers
#
config PINCTRL_SPACEMIT_K1
tristate "SpacemiT K1 SoC Pinctrl driver"
depends on ARCH_SPACEMIT || COMPILE_TEST
depends on OF
select GENERIC_PINCTRL_GROUPS
select GENERIC_PINMUX_FUNCTIONS
select GENERIC_PINCONF
help
Say Y to select the pinctrl driver for K1 SoC.
This pin controller allows selecting the mux function for
each pin. This driver can also be built as a module called
pinctrl-k1.

3
drivers/pinctrl/spacemit/Makefile Normal file
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@ -0,0 +1,3 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_PINCTRL_SPACEMIT_K1) += pinctrl-k1.o

1051
drivers/pinctrl/spacemit/pinctrl-k1.c Normal file
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File diff suppressed because it is too large Load Diff

40
drivers/pinctrl/spacemit/pinctrl-k1.h Normal file
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@ -0,0 +1,40 @@
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2024 Yixun Lan <dlan@gentoo.org> */
#ifndef _PINCTRL_SPACEMIT_K1_H
#define _PINCTRL_SPACEMIT_K1_H
#include <linux/bits.h>
#include <linux/bitfield.h>
#include <linux/device.h>
#include <linux/mutex.h>
#include <linux/spinlock.h>
#include <linux/platform_device.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinconf.h>
enum spacemit_pin_io_type {
IO_TYPE_NONE = 0,
IO_TYPE_1V8,
IO_TYPE_3V3,
IO_TYPE_EXTERNAL,
};
#define PIN_POWER_STATE_1V8 1800
#define PIN_POWER_STATE_3V3 3300
#define K1_PIN_IO_TYPE GENMASK(2, 1)
#define K1_PIN_CAP_IO_TYPE(type) \
FIELD_PREP_CONST(K1_PIN_IO_TYPE, type)
#define K1_PIN_GET_IO_TYPE(val) \
FIELD_GET(K1_PIN_IO_TYPE, val)
#define K1_FUNC_PIN(_id, _gpiofunc, _io) \
{ \
.pin = (_id), \
.gpiofunc = (_gpiofunc), \
.flags = (K1_PIN_CAP_IO_TYPE(_io)), \
}
#endif /* _PINCTRL_SPACEMIT_K1_H */