From patchwork Wed Oct 16 00:59:42 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yixun Lan X-Patchwork-Id: 836390 Received: from smtp.gentoo.org (woodpecker.gentoo.org [140.211.166.183]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 13B9A16132A; Wed, 16 Oct 2024 01:00:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=140.211.166.183 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729040423; cv=none; b=APkGHzexLhdiaJlPhWeKA6LiiluRIzGAvh0SE8lzGjlHflBaSCbaW5aBw8BxsnvWM0GAvJsKfc5n96szdgW5jCsoaNUSYoZbMuP+D4jWBlLgE+tFPOOIVtDzGOUEVYiBhj/fQIwowMHznNNAdQyMUiPoqxebq6Ce7W/RfNHlbug= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729040423; c=relaxed/simple; bh=eKxLnFm6qV+NdeKHNnh02C9Gl9fKxCWgcq/j4BlG5WY=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=KH52ON+PkGYnQZrshC6kAyktd0dke8vtP5bTu7kFSuC6hyCdh+mvqZg+rqYP/pOZZUQ9s9eZQADaVF0wZyD4tga0ITp0QIyZI+ookgXs2RgYv48aWvhVQ4vFvfWg+8WdNYPgvinv5y6l8eH69pVcJPbdWzlyKPqKOe0scyYOqzY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gentoo.org; spf=pass smtp.mailfrom=gentoo.org; arc=none smtp.client-ip=140.211.166.183 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gentoo.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gentoo.org From: Yixun Lan Date: Wed, 16 Oct 2024 08:59:42 +0800 Subject: [PATCH v5 2/3] pinctrl: spacemit: add support for SpacemiT K1 SoC Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241016-02-k1-pinctrl-v5-2-03d395222e4f@gentoo.org> References: <20241016-02-k1-pinctrl-v5-0-03d395222e4f@gentoo.org> In-Reply-To: <20241016-02-k1-pinctrl-v5-0-03d395222e4f@gentoo.org> To: Linus Walleij , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Paul Walmsley , Palmer Dabbelt , Albert Ou , Conor Dooley Cc: Yangyu Chen , Jesse Taube , Jisheng Zhang , Inochi Amaoto , Icenowy Zheng , Meng Zhang , Meng Zhang , devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, Yixun Lan X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=34383; i=dlan@gentoo.org; h=from:subject:message-id; bh=eKxLnFm6qV+NdeKHNnh02C9Gl9fKxCWgcq/j4BlG5WY=; b=owEBzQIy/ZANAwAKATGq6kdZTbvtAcsmYgBnDxAR2lnQdOdKVGz2FOaQl2+7NORW+bNcRc47x l68vrF76gGJApMEAAEKAH0WIQS1urjJwxtxFWcCI9wxqupHWU277QUCZw8QEV8UgAAAAAAuAChp c3N1ZXItZnByQG5vdGF0aW9ucy5vcGVucGdwLmZpZnRoaG9yc2VtYW4ubmV0QjVCQUI4QzlDMzF CNzExNTY3MDIyM0RDMzFBQUVBNDc1OTREQkJFRAAKCRAxqupHWU277XFzEACM2DwxznT9luB2YN 9FqpXnkqFc4lphAUeUUpeKEcwTYvCYN0pzv/swaCbPWd6BjmurHvw+6N46CgHAMsJgqUbd4VyTr NYmJPVEtBMRNSrOyoVjv9HWcek1CBFPfrGCSQmMrewEmRsxHbQ5/yOSvvWfewHKLJSMf9HsPEB8 jkDZBXkW6vQnuuS67GWrHoTiSxHjKMlXXDr3pNujFwvR91MmuJZLQraHioWsdPY98B00pufFyFO Sy15z8K5iz9M7Dw3NgLmIFaT2twe1FJdlp5luu2E5TUDK2EKvZXpzSKHz5G6UvguHejZu3WZQFX B1Vj6tW6nnFRJWqnPKrF627xzGSJstN7gVuZ+tbFNbZT8H8Ch7j2I6ee968v9b4VYj8RDuWVt55 DnirkI12OfTz7pi/W2aJR0OHqWG2GsKVfkc8l79y1q601zYExKtcBOVt5Z/EQvc90aSnHPUdX0t X9CvVJVzdVuAiDLAxUVME2+IFkkBqP2u83BoVpMyGss67qPEnjVUNOv3vG061e3OHcBpqDivN8L QLSXeGfbkjwFLnIQOue8LaKXP4TSNG4OZcZhk4m04iKW25MjoaZEbji06Rx6+8q5cwz46zmEALh d3KGA8eusc45V9/jYL+2PLAi/EiXa7XftO8VnQ154ru1KN4lM4uoiaLKZAqIbdImPYWQ== X-Developer-Key: i=dlan@gentoo.org; a=openpgp; fpr=50B03A1A5CBCD33576EF8CD7920C0DBCAABEFD55 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 --- drivers/pinctrl/Kconfig | 1 + drivers/pinctrl/Makefile | 1 + drivers/pinctrl/spacemit/Kconfig | 17 + drivers/pinctrl/spacemit/Makefile | 3 + drivers/pinctrl/spacemit/pinctrl-k1.c | 1051 +++++++++++++++++++++++++++++++++ drivers/pinctrl/spacemit/pinctrl-k1.h | 40 ++ 6 files changed, 1113 insertions(+) diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig index 354536de564b67528204ec8a3c1e6dd8e173e08f..167a9857df8d1a11818988039526d16fb8e40e37 100644 --- a/drivers/pinctrl/Kconfig +++ b/drivers/pinctrl/Kconfig @@ -606,6 +606,7 @@ 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" diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile index 97823f52b972a36b359c30f50849330c2ad61f62..1b3417ea3f912ef33cbf003b73caa3624a91d600 100644 --- a/drivers/pinctrl/Makefile +++ b/drivers/pinctrl/Makefile @@ -76,6 +76,7 @@ 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-$(CONFIG_SOC_STARFIVE) += starfive/ diff --git a/drivers/pinctrl/spacemit/Kconfig b/drivers/pinctrl/spacemit/Kconfig new file mode 100644 index 0000000000000000000000000000000000000000..168f8a5ffbb952cbeae3e3401c11149558e0a84b --- /dev/null +++ b/drivers/pinctrl/spacemit/Kconfig @@ -0,0 +1,17 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# Sophgo SoC PINCTRL drivers +# + +config PINCTRL_SPACEMIT_K1 + tristate "SpacemiT K1 SoC Pinctrl driver" + depends on ARCH_SPACEMIT || COMPILE_TEST + depends on OF + select GENERIC_PINCTRL_GROUPS + select GENERIC_PINMUX_FUNCTIONS + select GENERIC_PINCONF + help + Say Y to select the pinctrl driver for K1 SoC. + This pin controller allows selecting the mux function for + each pin. This driver can also be built as a module called + pinctrl-k1. diff --git a/drivers/pinctrl/spacemit/Makefile b/drivers/pinctrl/spacemit/Makefile new file mode 100644 index 0000000000000000000000000000000000000000..fede1e80fe0ff0dfec08e386b72a5f43ea384704 --- /dev/null +++ b/drivers/pinctrl/spacemit/Makefile @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0 + +obj-$(CONFIG_PINCTRL_SPACEMIT_K1) += pinctrl-k1.o diff --git a/drivers/pinctrl/spacemit/pinctrl-k1.c b/drivers/pinctrl/spacemit/pinctrl-k1.c new file mode 100644 index 0000000000000000000000000000000000000000..c75ea27b2344697927ac01f205e64ac7c4f6ce49 --- /dev/null +++ b/drivers/pinctrl/spacemit/pinctrl-k1.c @@ -0,0 +1,1051 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2024 Yixun Lan */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#include "../core.h" +#include "../pinctrl-utils.h" +#include "../pinconf.h" +#include "../pinmux.h" +#include "pinctrl-k1.h" + +/* + * +---------+----------+-----------+--------+--------+----------+--------+ + * | pull | drive | schmitter | slew | edge | strong | mux | + * | up/down | strength | trigger | rate | detect | pull | mode | + * +---------+----------+-----------+--------+--------+----------+--------+ + * 3 bits 3 bits 2 bits 1 bit 3 bits 1 bit 3 bits + */ + +#define PAD_MUX GENMASK(2, 0) +#define PAD_STRONG_PULL BIT(3) +#define PAD_EDGE_RISE BIT(4) +#define PAD_EDGE_FALL BIT(5) +#define PAD_EDGE_CLEAR BIT(6) +#define PAD_SLEW_RATE GENMASK(12, 11) +#define PAD_SLEW_RATE_EN BIT(7) +#define PAD_SCHMITT GENMASK(9, 8) +#define PAD_DRIVE GENMASK(12, 10) +#define PAD_PULLDOWN BIT(13) +#define PAD_PULLUP BIT(14) +#define PAD_PULL_EN BIT(15) + +struct spacemit_pin { + u16 pin; + u16 flags; + u8 gpiofunc; +}; + +struct spacemit_pinctrl { + struct device *dev; + struct pinctrl_dev *pctl_dev; + const struct spacemit_pinctrl_data *data; + struct pinctrl_desc pdesc; + + struct mutex mutex; + raw_spinlock_t lock; + + void __iomem *regs; +}; + +struct spacemit_pinctrl_data { + const struct pinctrl_pin_desc *pins; + const struct spacemit_pin *data; + u16 npins; +}; + +struct spacemit_pin_mux_config { + const struct spacemit_pin *pin; + u32 config; +}; + +struct spacemit_pin_drv_strength { + u8 val; + u32 mA; +}; + +/* map pin id to pinctrl register offset, refer MFPR definition */ +static unsigned int spacemit_pin_to_offset(unsigned int pin) +{ + unsigned int offset = 0; + + switch (pin) { + case 0 ... 85: + offset = pin + 1; + break; + case 86 ... 92: + offset = pin + 37; + break; + case 93 ... 97: + offset = pin + 24; + break; + case 98: + offset = 93; + break; + case 99: + offset = 92; + break; + case 100: + offset = 91; + break; + case 101: + offset = 90; + break; + case 102: + offset = 95; + break; + case 103: + offset = 94; + break; + case 104 ... 110: + offset = pin + 6; + break; + case 111 ... 127: + offset = pin + 20; + break; + default: + break; + } + + return offset << 2; +} + +static inline void __iomem *spacemit_pin_to_reg(struct spacemit_pinctrl *pctrl, + unsigned int pin) +{ + return pctrl->regs + spacemit_pin_to_offset(pin); +} + +static u16 spacemit_dt_get_pin(u32 value) +{ + return value >> 16; +} + +static u16 spacemit_dt_get_pin_mux(u32 value) +{ + return value & GENMASK(15, 0); +} + +static const struct spacemit_pin *spacemit_get_pin(struct spacemit_pinctrl *pctrl, + unsigned long pin) +{ + const struct spacemit_pin *pdata = pctrl->data->data; + int i; + + for (i = 0; i < pctrl->data->npins; i++) { + if (pin == pdata[i].pin) + return &pdata[i]; + } + + return NULL; +} + +static inline enum spacemit_pin_io_type spacemit_to_pin_io_type( + const struct spacemit_pin *pin) +{ + return K1_PIN_GET_IO_TYPE(pin->flags); +} + +/* External: IO voltage via external source, can be 1.8V or 3.3V */ +static const char * const io_type_desc[] = { + "None", + "Fixed/1V8", + "Fixed/3V3", + "External", +}; + +static void spacemit_pctrl_dbg_show(struct pinctrl_dev *pctldev, + struct seq_file *seq, unsigned int pin) +{ + struct spacemit_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + const struct spacemit_pin *spin = spacemit_get_pin(pctrl, pin); + enum spacemit_pin_io_type type = spacemit_to_pin_io_type(spin); + void __iomem *reg; + u32 value; + + seq_printf(seq, "offset: 0x%04x ", spacemit_pin_to_offset(pin)); + seq_printf(seq, "type: %s ", io_type_desc[type]); + + reg = spacemit_pin_to_reg(pctrl, pin); + value = readl(reg); + seq_printf(seq, "mux: %ld reg: 0x%04x", (value & PAD_MUX), value); +} + +/* use IO high level output current as the table */ +static struct spacemit_pin_drv_strength spacemit_ds_1v8_tbl[4] = { + { 0, 11 }, + { 2, 21 }, + { 4, 32 }, + { 6, 42 }, +}; + +static struct spacemit_pin_drv_strength spacemit_ds_3v3_tbl[8] = { + { 0, 7 }, + { 2, 10 }, + { 4, 13 }, + { 6, 16 }, + { 1, 19 }, + { 3, 23 }, + { 5, 26 }, + { 7, 29 }, +}; + +static inline u8 spacemit_get_ds_value(struct spacemit_pin_drv_strength *tbl, + u32 num, u32 mA) +{ + int i; + + for (i = 0; i < num; i++) + if (mA <= tbl[i].mA) + return tbl[i].val; + + return tbl[num - 1].val; +} + +static inline u32 spacemit_get_ds_mA(struct spacemit_pin_drv_strength *tbl, + u32 num, u32 val) +{ + int i; + + for (i = 0; i < num; i++) + if (val == tbl[i].val) + return tbl[i].mA; + + return 0; +} + +static inline u8 spacemit_get_driver_strength(enum spacemit_pin_io_type type, + u32 mA) +{ + switch (type) { + case IO_TYPE_1V8: + return spacemit_get_ds_value(spacemit_ds_1v8_tbl, + ARRAY_SIZE(spacemit_ds_1v8_tbl), + mA); + case IO_TYPE_3V3: + return spacemit_get_ds_value(spacemit_ds_3v3_tbl, + ARRAY_SIZE(spacemit_ds_3v3_tbl), + mA); + default: + return 0; + } +} + +static inline u32 spacemit_get_drive_strength_mA(enum spacemit_pin_io_type type, + u32 value) +{ + switch (type) { + case IO_TYPE_1V8: + return spacemit_get_ds_mA(spacemit_ds_1v8_tbl, + ARRAY_SIZE(spacemit_ds_1v8_tbl), + value & 0x6); + case IO_TYPE_3V3: + return spacemit_get_ds_mA(spacemit_ds_3v3_tbl, + ARRAY_SIZE(spacemit_ds_3v3_tbl), + value); + default: + return 0; + } +} + +static int spacemit_pctrl_check_power(struct pinctrl_dev *pctldev, + struct device_node *dn, + struct spacemit_pin_mux_config *pinmuxs, + int num_pins, const char *grpname) +{ + struct spacemit_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + struct device *dev = pctrl->dev; + enum spacemit_pin_io_type type; + u32 power = 0, i; + + of_property_read_u32(dn, "power-source", &power); + + for (i = 0; i < num_pins; i++) { + type = spacemit_to_pin_io_type(pinmuxs[i].pin); + + if (type != IO_TYPE_EXTERNAL) + continue; + + switch (power) { + case PIN_POWER_STATE_1V8: + case PIN_POWER_STATE_3V3: + break; + default: + dev_err(dev, "group %s has unsupported power\n", + grpname); + return -ENOTSUPP; + } + } + + return 0; +} + +static int spacemit_pctrl_dt_node_to_map(struct pinctrl_dev *pctldev, + struct device_node *np, + struct pinctrl_map **maps, + unsigned int *num_maps) +{ + struct spacemit_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + struct device *dev = pctrl->dev; + struct device_node *child; + struct pinctrl_map *map; + const char **grpnames; + const char *grpname; + int ngroups = 0; + int nmaps = 0; + int ret; + + for_each_available_child_of_node(np, child) + ngroups += 1; + + grpnames = devm_kcalloc(dev, ngroups, sizeof(*grpnames), GFP_KERNEL); + if (!grpnames) + return -ENOMEM; + + map = devm_kcalloc(dev, ngroups * 2, sizeof(*map), GFP_KERNEL); + if (!map) + return -ENOMEM; + + ngroups = 0; + guard(mutex)(&pctrl->mutex); + for_each_available_child_of_node_scoped(np, child) { + struct spacemit_pin_mux_config *pinmuxs; + unsigned int config, *pins; + int i, npins; + + npins = of_property_count_u32_elems(child, "pinmux"); + + if (npins < 1) { + dev_err(dev, "invalid pinctrl group %pOFn.%pOFn\n", + np, child); + return -EINVAL; + } + + grpname = devm_kasprintf(dev, GFP_KERNEL, "%pOFn.%pOFn", + np, child); + if (!grpname) + return -ENOMEM; + + grpnames[ngroups++] = grpname; + + pins = devm_kcalloc(dev, npins, sizeof(*pins), GFP_KERNEL); + if (!pins) + return -ENOMEM; + + pinmuxs = devm_kcalloc(dev, npins, sizeof(*pinmuxs), GFP_KERNEL); + if (!pinmuxs) + return -ENOMEM; + + for (i = 0; i < npins; i++) { + ret = of_property_read_u32_index(child, "pinmux", + i, &config); + + if (ret) + return -EINVAL; + + pins[i] = spacemit_dt_get_pin(config); + pinmuxs[i].config = config; + pinmuxs[i].pin = spacemit_get_pin(pctrl, pins[i]); + + if (!pinmuxs[i].pin) + return dev_err_probe(dev, -ENODEV, "failed to get pin %d\n", pins[i]); + } + + ret = spacemit_pctrl_check_power(pctldev, child, pinmuxs, + npins, grpname); + if (ret < 0) + return ret; + + map[nmaps].type = PIN_MAP_TYPE_MUX_GROUP; + map[nmaps].data.mux.function = np->name; + map[nmaps].data.mux.group = grpname; + nmaps += 1; + + ret = pinctrl_generic_add_group(pctldev, grpname, + pins, npins, pinmuxs); + if (ret < 0) + return dev_err_probe(dev, ret, "failed to add group %s: %d\n", grpname, ret); + + ret = pinconf_generic_parse_dt_config(child, pctldev, + &map[nmaps].data.configs.configs, + &map[nmaps].data.configs.num_configs); + if (ret) + return dev_err_probe(dev, ret, "failed to parse pin config of group %s\n", + grpname); + + if (map[nmaps].data.configs.num_configs == 0) + continue; + + map[nmaps].type = PIN_MAP_TYPE_CONFIGS_GROUP; + map[nmaps].data.configs.group_or_pin = grpname; + nmaps += 1; + } + + ret = pinmux_generic_add_function(pctldev, np->name, + grpnames, ngroups, NULL); + if (ret < 0) { + pinctrl_utils_free_map(pctldev, map, nmaps); + return dev_err_probe(dev, ret, "error adding function %s\n", np->name); + } + + *maps = map; + *num_maps = nmaps; + + return 0; +} + +static const struct pinctrl_ops spacemit_pctrl_ops = { + .get_groups_count = pinctrl_generic_get_group_count, + .get_group_name = pinctrl_generic_get_group_name, + .get_group_pins = pinctrl_generic_get_group_pins, + .pin_dbg_show = spacemit_pctrl_dbg_show, + .dt_node_to_map = spacemit_pctrl_dt_node_to_map, + .dt_free_map = pinctrl_utils_free_map, +}; + +static int spacemit_pmx_set_mux(struct pinctrl_dev *pctldev, + unsigned int fsel, unsigned int gsel) +{ + struct spacemit_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + const struct group_desc *group; + const struct spacemit_pin_mux_config *configs; + unsigned int i, mux; + void __iomem *reg; + + group = pinctrl_generic_get_group(pctldev, gsel); + if (!group) + return -EINVAL; + + configs = group->data; + + for (i = 0; i < group->grp.npins; i++) { + const struct spacemit_pin *spin = configs[i].pin; + u32 value = configs[i].config; + + reg = spacemit_pin_to_reg(pctrl, spin->pin); + mux = spacemit_dt_get_pin_mux(value); + + guard(raw_spinlock_irqsave)(&pctrl->lock); + value = readl_relaxed(reg) & ~PAD_MUX; + writel_relaxed(mux | value, reg); + } + + return 0; +} + +static int spacemit_request_gpio(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range, + unsigned int pin) +{ + struct spacemit_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + const struct spacemit_pin *spin = spacemit_get_pin(pctrl, pin); + void __iomem *reg; + + reg = spacemit_pin_to_reg(pctrl, pin); + guard(raw_spinlock_irqsave)(&pctrl->lock); + writel_relaxed(spin->gpiofunc, reg); + + return 0; +} + +static const struct pinmux_ops spacemit_pmx_ops = { + .get_functions_count = pinmux_generic_get_function_count, + .get_function_name = pinmux_generic_get_function_name, + .get_function_groups = pinmux_generic_get_function_groups, + .set_mux = spacemit_pmx_set_mux, + .gpio_request_enable = spacemit_request_gpio, + .strict = true, +}; + +static int spacemit_pinconf_get(struct pinctrl_dev *pctldev, + unsigned int pin, unsigned long *config) +{ + struct spacemit_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + int param = pinconf_to_config_param(*config); + u32 value, arg = 0; + + if (!pin) + return -EINVAL; + + value = readl(spacemit_pin_to_reg(pctrl, pin)); + + switch (param) { + case PIN_CONFIG_SLEW_RATE: + if (FIELD_GET(PAD_SLEW_RATE_EN, value)) + arg = FIELD_GET(PAD_SLEW_RATE, value) + 2; + else + arg = 0; + break; + default: + return -EINVAL; + } + + *config = pinconf_to_config_packed(param, arg); + + return 0; +} + +#define ENABLE_DRV_STRENGTH BIT(1) +#define ENABLE_SLEW_RATE BIT(2) +static int spacemit_pinconf_generate_config(const struct spacemit_pin *spin, + unsigned long *configs, + unsigned int num_configs, + u32 *value) +{ + enum spacemit_pin_io_type type; + int i, param; + u32 v = 0, voltage = 0, arg, val; + u32 flag = 0, drv_strength, slew_rate; + + if (!spin) + return -EINVAL; + + for (i = 0; i < num_configs; i++) { + param = pinconf_to_config_param(configs[i]); + arg = pinconf_to_config_argument(configs[i]); + + switch (param) { + case PIN_CONFIG_BIAS_DISABLE: + v &= ~(PAD_PULL_EN | PAD_PULLDOWN | PAD_PULLUP); + v &= ~PAD_STRONG_PULL; + break; + case PIN_CONFIG_BIAS_PULL_DOWN: + v &= ~(PAD_PULLUP | PAD_STRONG_PULL); + v |= (PAD_PULL_EN | PAD_PULLDOWN); + break; + case PIN_CONFIG_BIAS_PULL_UP: + v &= ~PAD_PULLDOWN; + v |= (PAD_PULL_EN | PAD_PULLUP); + + if (arg == 1) + v |= PAD_STRONG_PULL; + break; + case PIN_CONFIG_DRIVE_STRENGTH: + flag |= ENABLE_DRV_STRENGTH; + drv_strength = arg; + break; + case PIN_CONFIG_INPUT_SCHMITT: + v &= ~PAD_SCHMITT; + v |= FIELD_PREP(PAD_SCHMITT, arg); + break; + case PIN_CONFIG_POWER_SOURCE: + voltage = arg; + break; + case PIN_CONFIG_SLEW_RATE: + if (arg) { + flag |= ENABLE_SLEW_RATE; + v |= PAD_SLEW_RATE_EN; + slew_rate = arg; + } else { + v &= ~PAD_SLEW_RATE_EN; + } + break; + default: + return -EINVAL; + } + } + + if (flag & ENABLE_DRV_STRENGTH) { + type = spacemit_to_pin_io_type(spin); + + /* fix external io type */ + if (type == IO_TYPE_EXTERNAL) { + switch (voltage) { + case 1800: + type = IO_TYPE_1V8; + break; + case 3300: + type = IO_TYPE_3V3; + break; + default: + return -EINVAL; + } + } + + val = spacemit_get_driver_strength(type, drv_strength); + + v &= ~PAD_DRIVE; + v |= FIELD_PREP(PAD_DRIVE, val); + } + + if (flag & ENABLE_SLEW_RATE) { + /* check, driver strength & slew rate */ + if (flag & ENABLE_DRV_STRENGTH) { + val = FIELD_GET(PAD_SLEW_RATE, v) + 2; + if (slew_rate > 1 && slew_rate != val) { + pr_err("slew rate conflict with drive strength\n"); + return -EINVAL; + } + } else { + v &= ~PAD_SLEW_RATE; + slew_rate = slew_rate > 1 ? (slew_rate - 2) : 0; + v |= FIELD_PREP(PAD_SLEW_RATE, slew_rate); + } + } + + *value = v; + + return 0; +} + +static int spacemit_pin_set_config(struct spacemit_pinctrl *pctrl, + unsigned int pin, u32 value) +{ + const struct spacemit_pin *spin = spacemit_get_pin(pctrl, pin); + void __iomem *reg; + unsigned int mux; + + if (!pin) + return -EINVAL; + + reg = spacemit_pin_to_reg(pctrl, spin->pin); + + guard(raw_spinlock_irqsave)(&pctrl->lock); + mux = readl_relaxed(reg) & PAD_MUX; + writel_relaxed(mux | value, reg); + + return 0; +} + +static int spacemit_pinconf_set(struct pinctrl_dev *pctldev, + unsigned int pin, unsigned long *configs, + unsigned int num_configs) +{ + struct spacemit_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + const struct spacemit_pin *spin = spacemit_get_pin(pctrl, pin); + u32 value; + + if (spacemit_pinconf_generate_config(spin, configs, num_configs, &value)) + return -EINVAL; + + return spacemit_pin_set_config(pctrl, pin, value); +} + +static int spacemit_pinconf_group_set(struct pinctrl_dev *pctldev, + unsigned int gsel, + unsigned long *configs, + unsigned int num_configs) +{ + struct spacemit_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + const struct spacemit_pin *spin; + const struct group_desc *group; + u32 value; + int i; + + group = pinctrl_generic_get_group(pctldev, gsel); + if (!group) + return -EINVAL; + + spin = spacemit_get_pin(pctrl, group->grp.pins[0]); + if (spacemit_pinconf_generate_config(spin, configs, num_configs, &value)) + return -EINVAL; + + for (i = 0; i < group->grp.npins; i++) + spacemit_pin_set_config(pctrl, group->grp.pins[i], value); + + return 0; +} + +static void spacemit_pinconf_dbg_pull(struct seq_file *seq, unsigned int value) +{ + u32 normal, strong; + + if (!FIELD_GET(PAD_PULL_EN, value)) { + seq_puts(seq, ", bias pull disabled"); + return; + } + + if (FIELD_GET(PAD_PULLDOWN, value)) + seq_puts(seq, ", bias pull down"); + + normal = FIELD_GET(PAD_PULLUP, value); + strong = FIELD_GET(PAD_STRONG_PULL, value); + + if (normal && strong) + seq_puts(seq, ", bias strong pull up"); + else if (normal) + seq_puts(seq, ", bias normal pull up"); +} + +static void spacemit_pinconf_dbg_show(struct pinctrl_dev *pctldev, + struct seq_file *seq, unsigned int pin) +{ + struct spacemit_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + const struct spacemit_pin *spin = spacemit_get_pin(pctrl, pin); + enum spacemit_pin_io_type type = spacemit_to_pin_io_type(spin); + void __iomem *reg = spacemit_pin_to_reg(pctrl, pin); + u32 value, tmp, mA; + + value = readl(reg); + spacemit_pinconf_dbg_pull(seq, value); + + seq_printf(seq, ", io type (%s)", io_type_desc[type]); + + tmp = FIELD_GET(PAD_DRIVE, value); + if (type == IO_TYPE_1V8 || type == IO_TYPE_3V3) { + mA = spacemit_get_drive_strength_mA(type, tmp); + seq_printf(seq, ", drive strength (%d mA)", mA); + } + + /* drive strength depend on power source, so show all values */ + if (type == IO_TYPE_EXTERNAL) + seq_printf(seq, ", drive strength (%d or %d mA)", + spacemit_get_drive_strength_mA(IO_TYPE_1V8, tmp), + spacemit_get_drive_strength_mA(IO_TYPE_3V3, tmp)); + + seq_printf(seq, ", register (0x%04x)\n", value); +} + +static const struct pinconf_ops spacemit_pinconf_ops = { + .pin_config_get = spacemit_pinconf_get, + .pin_config_set = spacemit_pinconf_set, + .pin_config_group_set = spacemit_pinconf_group_set, + .pin_config_dbg_show = spacemit_pinconf_dbg_show, + .is_generic = true, +}; + +static int spacemit_pinctrl_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct spacemit_pinctrl *pctrl; + const struct spacemit_pinctrl_data *pctrl_data; + int ret; + + pctrl_data = device_get_match_data(dev); + if (!pctrl_data) + return -ENODEV; + + if (pctrl_data->npins == 0) + return dev_err_probe(dev, -EINVAL, "invalid pin data\n"); + + pctrl = devm_kzalloc(dev, sizeof(*pctrl), GFP_KERNEL); + if (!pctrl) + return -ENOMEM; + + pctrl->regs = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(pctrl->regs)) + return PTR_ERR(pctrl->regs); + + pctrl->pdesc.name = dev_name(dev); + pctrl->pdesc.pins = pctrl_data->pins; + pctrl->pdesc.npins = pctrl_data->npins; + pctrl->pdesc.pctlops = &spacemit_pctrl_ops; + pctrl->pdesc.pmxops = &spacemit_pmx_ops; + pctrl->pdesc.confops = &spacemit_pinconf_ops; + pctrl->pdesc.owner = THIS_MODULE; + + pctrl->data = pctrl_data; + pctrl->dev = dev; + raw_spin_lock_init(&pctrl->lock); + mutex_init(&pctrl->mutex); + + platform_set_drvdata(pdev, pctrl); + + ret = devm_pinctrl_register_and_init(dev, &pctrl->pdesc, + pctrl, &pctrl->pctl_dev); + if (ret) + return dev_err_probe(dev, ret, + "fail to register pinctrl driver\n"); + + return pinctrl_enable(pctrl->pctl_dev); +} + +static const struct pinctrl_pin_desc k1_pin_desc[] = { + PINCTRL_PIN(0, "GPIO_00"), + PINCTRL_PIN(1, "GPIO_01"), + PINCTRL_PIN(2, "GPIO_02"), + PINCTRL_PIN(3, "GPIO_03"), + PINCTRL_PIN(4, "GPIO_04"), + PINCTRL_PIN(5, "GPIO_05"), + PINCTRL_PIN(6, "GPIO_06"), + PINCTRL_PIN(7, "GPIO_07"), + PINCTRL_PIN(8, "GPIO_08"), + PINCTRL_PIN(9, "GPIO_09"), + PINCTRL_PIN(10, "GPIO_10"), + PINCTRL_PIN(11, "GPIO_11"), + PINCTRL_PIN(12, "GPIO_12"), + PINCTRL_PIN(13, "GPIO_13"), + PINCTRL_PIN(14, "GPIO_14"), + PINCTRL_PIN(15, "GPIO_15"), + PINCTRL_PIN(16, "GPIO_16"), + PINCTRL_PIN(17, "GPIO_17"), + PINCTRL_PIN(18, "GPIO_18"), + PINCTRL_PIN(19, "GPIO_19"), + PINCTRL_PIN(20, "GPIO_20"), + PINCTRL_PIN(21, "GPIO_21"), + PINCTRL_PIN(22, "GPIO_22"), + PINCTRL_PIN(23, "GPIO_23"), + PINCTRL_PIN(24, "GPIO_24"), + PINCTRL_PIN(25, "GPIO_25"), + PINCTRL_PIN(26, "GPIO_26"), + PINCTRL_PIN(27, "GPIO_27"), + PINCTRL_PIN(28, "GPIO_28"), + PINCTRL_PIN(29, "GPIO_29"), + PINCTRL_PIN(30, "GPIO_30"), + PINCTRL_PIN(31, "GPIO_31"), + PINCTRL_PIN(32, "GPIO_32"), + PINCTRL_PIN(33, "GPIO_33"), + PINCTRL_PIN(34, "GPIO_34"), + PINCTRL_PIN(35, "GPIO_35"), + PINCTRL_PIN(36, "GPIO_36"), + PINCTRL_PIN(37, "GPIO_37"), + PINCTRL_PIN(38, "GPIO_38"), + PINCTRL_PIN(39, "GPIO_39"), + PINCTRL_PIN(40, "GPIO_40"), + PINCTRL_PIN(41, "GPIO_41"), + PINCTRL_PIN(42, "GPIO_42"), + PINCTRL_PIN(43, "GPIO_43"), + PINCTRL_PIN(44, "GPIO_44"), + PINCTRL_PIN(45, "GPIO_45"), + PINCTRL_PIN(46, "GPIO_46"), + PINCTRL_PIN(47, "GPIO_47"), + PINCTRL_PIN(48, "GPIO_48"), + PINCTRL_PIN(49, "GPIO_49"), + PINCTRL_PIN(50, "GPIO_50"), + PINCTRL_PIN(51, "GPIO_51"), + PINCTRL_PIN(52, "GPIO_52"), + PINCTRL_PIN(53, "GPIO_53"), + PINCTRL_PIN(54, "GPIO_54"), + PINCTRL_PIN(55, "GPIO_55"), + PINCTRL_PIN(56, "GPIO_56"), + PINCTRL_PIN(57, "GPIO_57"), + PINCTRL_PIN(58, "GPIO_58"), + PINCTRL_PIN(59, "GPIO_59"), + PINCTRL_PIN(60, "GPIO_60"), + PINCTRL_PIN(61, "GPIO_61"), + PINCTRL_PIN(62, "GPIO_62"), + PINCTRL_PIN(63, "GPIO_63"), + PINCTRL_PIN(64, "GPIO_64"), + PINCTRL_PIN(65, "GPIO_65"), + PINCTRL_PIN(66, "GPIO_66"), + PINCTRL_PIN(67, "GPIO_67"), + PINCTRL_PIN(68, "GPIO_68"), + PINCTRL_PIN(69, "GPIO_69"), + PINCTRL_PIN(70, "GPIO_70/PRI_DTI"), + PINCTRL_PIN(71, "GPIO_71/PRI_TMS"), + PINCTRL_PIN(72, "GPIO_72/PRI_TCK"), + PINCTRL_PIN(73, "GPIO_73/PRI_TDO"), + PINCTRL_PIN(74, "GPIO_74"), + PINCTRL_PIN(75, "GPIO_75"), + PINCTRL_PIN(76, "GPIO_76"), + PINCTRL_PIN(77, "GPIO_77"), + PINCTRL_PIN(78, "GPIO_78"), + PINCTRL_PIN(79, "GPIO_79"), + PINCTRL_PIN(80, "GPIO_80"), + PINCTRL_PIN(81, "GPIO_81"), + PINCTRL_PIN(82, "GPIO_82"), + PINCTRL_PIN(83, "GPIO_83"), + PINCTRL_PIN(84, "GPIO_84"), + PINCTRL_PIN(85, "GPIO_85"), + PINCTRL_PIN(86, "GPIO_86"), + PINCTRL_PIN(87, "GPIO_87"), + PINCTRL_PIN(88, "GPIO_88"), + PINCTRL_PIN(89, "GPIO_89"), + PINCTRL_PIN(90, "GPIO_90"), + PINCTRL_PIN(91, "GPIO_91"), + PINCTRL_PIN(92, "GPIO_92"), + PINCTRL_PIN(93, "GPIO_93/PWR_SCL"), + PINCTRL_PIN(94, "GPIO_94/PWR_SDA"), + PINCTRL_PIN(95, "GPIO_95/VCX0_EN"), + PINCTRL_PIN(96, "GPIO_96/DVL0"), + PINCTRL_PIN(97, "GPIO_97/DVL1"), + PINCTRL_PIN(98, "GPIO_98/QSPI_DAT3"), + PINCTRL_PIN(99, "GPIO_99/QSPI_DAT2"), + PINCTRL_PIN(100, "GPIO_100/QSPI_DAT1"), + PINCTRL_PIN(101, "GPIO_101/QSPI_DAT0"), + PINCTRL_PIN(102, "GPIO_102/QSPI_CLK"), + PINCTRL_PIN(103, "GPIO_103/QSPI_CS1"), + PINCTRL_PIN(104, "GPIO_104/MMC1_DAT3"), + PINCTRL_PIN(105, "GPIO_105/MMC1_DAT2"), + PINCTRL_PIN(106, "GPIO_106/MMC1_DAT1"), + PINCTRL_PIN(107, "GPIO_107/MMC1_DAT0"), + PINCTRL_PIN(108, "GPIO_108/MMC1_CMD"), + PINCTRL_PIN(109, "GPIO_109/MMC1_CLK"), + PINCTRL_PIN(110, "GPIO_110"), + PINCTRL_PIN(111, "GPIO_111"), + PINCTRL_PIN(112, "GPIO_112"), + PINCTRL_PIN(113, "GPIO_113"), + PINCTRL_PIN(114, "GPIO_114"), + PINCTRL_PIN(115, "GPIO_115"), + PINCTRL_PIN(116, "GPIO_116"), + PINCTRL_PIN(117, "GPIO_117"), + PINCTRL_PIN(118, "GPIO_118"), + PINCTRL_PIN(119, "GPIO_119"), + PINCTRL_PIN(120, "GPIO_120"), + PINCTRL_PIN(121, "GPIO_121"), + PINCTRL_PIN(122, "GPIO_122"), + PINCTRL_PIN(123, "GPIO_123"), + PINCTRL_PIN(124, "GPIO_124"), + PINCTRL_PIN(125, "GPIO_125"), + PINCTRL_PIN(126, "GPIO_126"), + PINCTRL_PIN(127, "GPIO_127"), +}; + +static const struct spacemit_pin k1_pin_data[ARRAY_SIZE(k1_pin_desc)] = { + K1_FUNC_PIN(0, 0, IO_TYPE_1V8), + K1_FUNC_PIN(1, 0, IO_TYPE_1V8), + K1_FUNC_PIN(2, 0, IO_TYPE_1V8), + K1_FUNC_PIN(3, 0, IO_TYPE_1V8), + K1_FUNC_PIN(4, 0, IO_TYPE_1V8), + K1_FUNC_PIN(5, 0, IO_TYPE_1V8), + K1_FUNC_PIN(6, 0, IO_TYPE_1V8), + K1_FUNC_PIN(7, 0, IO_TYPE_1V8), + K1_FUNC_PIN(8, 0, IO_TYPE_1V8), + K1_FUNC_PIN(9, 0, IO_TYPE_1V8), + K1_FUNC_PIN(10, 0, IO_TYPE_1V8), + K1_FUNC_PIN(11, 0, IO_TYPE_1V8), + K1_FUNC_PIN(12, 0, IO_TYPE_1V8), + K1_FUNC_PIN(13, 0, IO_TYPE_1V8), + K1_FUNC_PIN(14, 0, IO_TYPE_1V8), + K1_FUNC_PIN(15, 0, IO_TYPE_1V8), + K1_FUNC_PIN(16, 0, IO_TYPE_1V8), + K1_FUNC_PIN(17, 0, IO_TYPE_1V8), + K1_FUNC_PIN(18, 0, IO_TYPE_1V8), + K1_FUNC_PIN(19, 0, IO_TYPE_1V8), + K1_FUNC_PIN(20, 0, IO_TYPE_1V8), + K1_FUNC_PIN(21, 0, IO_TYPE_1V8), + K1_FUNC_PIN(22, 0, IO_TYPE_1V8), + K1_FUNC_PIN(23, 0, IO_TYPE_1V8), + K1_FUNC_PIN(24, 0, IO_TYPE_1V8), + K1_FUNC_PIN(25, 0, IO_TYPE_1V8), + K1_FUNC_PIN(26, 0, IO_TYPE_1V8), + K1_FUNC_PIN(27, 0, IO_TYPE_1V8), + K1_FUNC_PIN(28, 0, IO_TYPE_1V8), + K1_FUNC_PIN(29, 0, IO_TYPE_1V8), + K1_FUNC_PIN(30, 0, IO_TYPE_1V8), + K1_FUNC_PIN(31, 0, IO_TYPE_1V8), + K1_FUNC_PIN(32, 0, IO_TYPE_1V8), + K1_FUNC_PIN(33, 0, IO_TYPE_1V8), + K1_FUNC_PIN(34, 0, IO_TYPE_1V8), + K1_FUNC_PIN(35, 0, IO_TYPE_1V8), + K1_FUNC_PIN(36, 0, IO_TYPE_1V8), + K1_FUNC_PIN(37, 0, IO_TYPE_1V8), + K1_FUNC_PIN(38, 0, IO_TYPE_1V8), + K1_FUNC_PIN(39, 0, IO_TYPE_1V8), + K1_FUNC_PIN(40, 0, IO_TYPE_1V8), + K1_FUNC_PIN(41, 0, IO_TYPE_1V8), + K1_FUNC_PIN(42, 0, IO_TYPE_1V8), + K1_FUNC_PIN(43, 0, IO_TYPE_1V8), + K1_FUNC_PIN(44, 0, IO_TYPE_1V8), + K1_FUNC_PIN(45, 0, IO_TYPE_1V8), + K1_FUNC_PIN(46, 0, IO_TYPE_1V8), + K1_FUNC_PIN(47, 0, IO_TYPE_EXTERNAL), + K1_FUNC_PIN(48, 0, IO_TYPE_EXTERNAL), + K1_FUNC_PIN(49, 0, IO_TYPE_EXTERNAL), + K1_FUNC_PIN(50, 0, IO_TYPE_EXTERNAL), + K1_FUNC_PIN(51, 0, IO_TYPE_EXTERNAL), + K1_FUNC_PIN(52, 0, IO_TYPE_EXTERNAL), + K1_FUNC_PIN(53, 0, IO_TYPE_1V8), + K1_FUNC_PIN(54, 0, IO_TYPE_1V8), + K1_FUNC_PIN(55, 0, IO_TYPE_1V8), + K1_FUNC_PIN(56, 0, IO_TYPE_1V8), + K1_FUNC_PIN(57, 0, IO_TYPE_1V8), + K1_FUNC_PIN(58, 0, IO_TYPE_1V8), + K1_FUNC_PIN(59, 0, IO_TYPE_1V8), + K1_FUNC_PIN(60, 0, IO_TYPE_1V8), + K1_FUNC_PIN(61, 0, IO_TYPE_1V8), + K1_FUNC_PIN(62, 0, IO_TYPE_1V8), + K1_FUNC_PIN(63, 0, IO_TYPE_1V8), + K1_FUNC_PIN(64, 0, IO_TYPE_1V8), + K1_FUNC_PIN(65, 0, IO_TYPE_1V8), + K1_FUNC_PIN(66, 0, IO_TYPE_1V8), + K1_FUNC_PIN(67, 0, IO_TYPE_1V8), + K1_FUNC_PIN(68, 0, IO_TYPE_1V8), + K1_FUNC_PIN(69, 0, IO_TYPE_1V8), + K1_FUNC_PIN(70, 1, IO_TYPE_1V8), + K1_FUNC_PIN(71, 1, IO_TYPE_1V8), + K1_FUNC_PIN(72, 1, IO_TYPE_1V8), + K1_FUNC_PIN(73, 1, IO_TYPE_1V8), + K1_FUNC_PIN(74, 0, IO_TYPE_1V8), + K1_FUNC_PIN(75, 0, IO_TYPE_EXTERNAL), + K1_FUNC_PIN(76, 0, IO_TYPE_EXTERNAL), + K1_FUNC_PIN(77, 0, IO_TYPE_EXTERNAL), + K1_FUNC_PIN(78, 0, IO_TYPE_EXTERNAL), + K1_FUNC_PIN(79, 0, IO_TYPE_EXTERNAL), + K1_FUNC_PIN(80, 0, IO_TYPE_EXTERNAL), + K1_FUNC_PIN(81, 0, IO_TYPE_1V8), + K1_FUNC_PIN(82, 0, IO_TYPE_1V8), + K1_FUNC_PIN(83, 0, IO_TYPE_1V8), + K1_FUNC_PIN(84, 0, IO_TYPE_1V8), + K1_FUNC_PIN(85, 0, IO_TYPE_1V8), + K1_FUNC_PIN(86, 0, IO_TYPE_1V8), + K1_FUNC_PIN(87, 0, IO_TYPE_1V8), + K1_FUNC_PIN(88, 0, IO_TYPE_1V8), + K1_FUNC_PIN(89, 0, IO_TYPE_1V8), + K1_FUNC_PIN(90, 0, IO_TYPE_1V8), + K1_FUNC_PIN(91, 0, IO_TYPE_1V8), + K1_FUNC_PIN(92, 0, IO_TYPE_1V8), + K1_FUNC_PIN(93, 1, IO_TYPE_1V8), + K1_FUNC_PIN(94, 1, IO_TYPE_1V8), + K1_FUNC_PIN(95, 1, IO_TYPE_1V8), + K1_FUNC_PIN(96, 1, IO_TYPE_1V8), + K1_FUNC_PIN(97, 1, IO_TYPE_1V8), + K1_FUNC_PIN(98, 1, IO_TYPE_EXTERNAL), + K1_FUNC_PIN(99, 1, IO_TYPE_EXTERNAL), + K1_FUNC_PIN(100, 1, IO_TYPE_EXTERNAL), + K1_FUNC_PIN(101, 1, IO_TYPE_EXTERNAL), + K1_FUNC_PIN(102, 1, IO_TYPE_EXTERNAL), + K1_FUNC_PIN(103, 1, IO_TYPE_EXTERNAL), + K1_FUNC_PIN(104, 4, IO_TYPE_EXTERNAL), + K1_FUNC_PIN(105, 4, IO_TYPE_EXTERNAL), + K1_FUNC_PIN(106, 4, IO_TYPE_EXTERNAL), + K1_FUNC_PIN(107, 4, IO_TYPE_EXTERNAL), + K1_FUNC_PIN(108, 4, IO_TYPE_EXTERNAL), + K1_FUNC_PIN(109, 4, IO_TYPE_EXTERNAL), + K1_FUNC_PIN(110, 0, IO_TYPE_1V8), + K1_FUNC_PIN(111, 0, IO_TYPE_1V8), + K1_FUNC_PIN(112, 0, IO_TYPE_1V8), + K1_FUNC_PIN(113, 0, IO_TYPE_1V8), + K1_FUNC_PIN(114, 0, IO_TYPE_1V8), + K1_FUNC_PIN(115, 0, IO_TYPE_1V8), + K1_FUNC_PIN(116, 0, IO_TYPE_1V8), + K1_FUNC_PIN(117, 0, IO_TYPE_1V8), + K1_FUNC_PIN(118, 0, IO_TYPE_1V8), + K1_FUNC_PIN(119, 0, IO_TYPE_1V8), + K1_FUNC_PIN(120, 0, IO_TYPE_1V8), + K1_FUNC_PIN(121, 0, IO_TYPE_1V8), + K1_FUNC_PIN(122, 0, IO_TYPE_1V8), + K1_FUNC_PIN(123, 0, IO_TYPE_1V8), + K1_FUNC_PIN(124, 0, IO_TYPE_1V8), + K1_FUNC_PIN(125, 0, IO_TYPE_1V8), + K1_FUNC_PIN(126, 0, IO_TYPE_1V8), + K1_FUNC_PIN(127, 0, IO_TYPE_1V8), +}; + +static const struct spacemit_pinctrl_data k1_pinctrl_data = { + .pins = k1_pin_desc, + .data = k1_pin_data, + .npins = ARRAY_SIZE(k1_pin_desc), +}; + +static const struct of_device_id k1_pinctrl_ids[] = { + { .compatible = "spacemit,k1-pinctrl", .data = &k1_pinctrl_data }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, k1_pinctrl_ids); + +static struct platform_driver k1_pinctrl_driver = { + .probe = spacemit_pinctrl_probe, + .driver = { + .name = "k1-pinctrl", + .suppress_bind_attrs = true, + .of_match_table = k1_pinctrl_ids, + }, +}; +module_platform_driver(k1_pinctrl_driver); + +MODULE_AUTHOR("Yixun Lan "); +MODULE_DESCRIPTION("Pinctrl driver for the SpacemiT K1 SoC"); +MODULE_LICENSE("GPL"); diff --git a/drivers/pinctrl/spacemit/pinctrl-k1.h b/drivers/pinctrl/spacemit/pinctrl-k1.h new file mode 100644 index 0000000000000000000000000000000000000000..16143fea469ebc7c9fa65cfa177fa915576c145a --- /dev/null +++ b/drivers/pinctrl/spacemit/pinctrl-k1.h @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) 2024 Yixun Lan */ + +#ifndef _PINCTRL_SPACEMIT_K1_H +#define _PINCTRL_SPACEMIT_K1_H + +#include +#include +#include +#include +#include +#include +#include +#include + +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 */