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IronPort-SDR: vdTDxvQoJN8KDB4k1vRNh9S3Fw9Cr0+rw+S4FGb9FZv4QoEwmox+czve3xIClYOsuP5UMTAi9P toP1Bo34/l6jrpblG4yygVoDMlmHnzcwm9q/luZHslPEapii5v1H/9k/vz+079GVn6VaLt+XEO RKmxu6d3cWOGk8CzDrS1XjmV3bGN3TUEIzJX4XMTT1vsfwXX6NXqfqfM2A8Cv6NFyPcRwKWyH1 sq+VMcYaerwb2X4l+S6eotDh4swqiQPH7J6u9zeeIZLaD3xRoGq+YfcA1KOuFeTGg+UfaZ45GG 4m4= X-IronPort-AV: E=Sophos;i="5.77,343,1596524400"; d="scan'208";a="94382243" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa3.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 06 Oct 2020 07:25:51 -0700 Received: from chn-vm-ex01.mchp-main.com (10.10.85.143) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Tue, 6 Oct 2020 07:25:40 -0700 Received: from soft-dev10.microsemi.net (10.10.115.15) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server id 15.1.1979.3 via Frontend Transport; Tue, 6 Oct 2020 07:25:39 -0700 From: Lars Povlsen To: Linus Walleij Subject: [RESEND PATCH v3 2/3] pinctrl: pinctrl-mchp-sgpio: Add pinctrl driver for Microsemi Serial GPIO Date: Tue, 6 Oct 2020 16:25:31 +0200 Message-ID: <20201006142532.2247515-3-lars.povlsen@microchip.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201006142532.2247515-1-lars.povlsen@microchip.com> References: <20201006142532.2247515-1-lars.povlsen@microchip.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201006_102552_786264_F883E63E X-CRM114-Status: GOOD ( 22.87 ) X-Spam-Score: -2.5 (--) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-2.5 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 RCVD_IN_MSPIKE_H4 RBL: Very Good reputation (+4) [68.232.153.233 listed in wl.mailspike.net] -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [68.232.153.233 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Alexandre Belloni , linux-kernel@vger.kernel.org, Microchip Linux Driver Support , linux-gpio@vger.kernel.org, Lars Povlsen , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This adds a pinctrl driver for the Microsemi/Microchip Serial GPIO (SGPIO) device used in various SoC's. Signed-off-by: Lars Povlsen --- MAINTAINERS | 1 + drivers/pinctrl/Kconfig | 18 + drivers/pinctrl/Makefile | 1 + drivers/pinctrl/pinctrl-microchip-sgpio.c | 676 ++++++++++++++++++++++ 4 files changed, 696 insertions(+) create mode 100644 drivers/pinctrl/pinctrl-microchip-sgpio.c -- 2.25.1 diff --git a/MAINTAINERS b/MAINTAINERS index cc70e3ab428b..a8cc028b84d0 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2137,6 +2137,7 @@ M: Microchip Linux Driver Support L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) S: Supported F: arch/arm64/boot/dts/microchip/ +F: drivers/pinctrl/pinctrl-microchip-sgpio.c N: sparx5 ARM/MIOA701 MACHINE SUPPORT diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig index 8828613c4e0e..1b3527d4c3c8 100644 --- a/drivers/pinctrl/Kconfig +++ b/drivers/pinctrl/Kconfig @@ -404,6 +404,24 @@ config PINCTRL_OCELOT select OF_GPIO select REGMAP_MMIO +config PINCTRL_MICROCHIP_SGPIO + bool "Pinctrl driver for Microsemi/Microchip Serial GPIO" + depends on OF + depends on HAS_IOMEM + select GPIOLIB + select GENERIC_PINCONF + select GENERIC_PINCTRL_GROUPS + select GENERIC_PINMUX_FUNCTIONS + select OF_GPIO + help + Support for the serial GPIO interface used on Microsemi and + Microchip SoC's. By using a serial interface, the SIO + controller significantly extends the number of available + GPIOs with a minimum number of additional pins on the + device. The primary purpose of the SIO controller is to + connect control signals from SFP modules and to act as an + LED controller. + source "drivers/pinctrl/actions/Kconfig" source "drivers/pinctrl/aspeed/Kconfig" source "drivers/pinctrl/bcm/Kconfig" diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile index 1731b2154df9..347b0e015960 100644 --- a/drivers/pinctrl/Makefile +++ b/drivers/pinctrl/Makefile @@ -49,6 +49,7 @@ obj-$(CONFIG_PINCTRL_ZYNQ) += pinctrl-zynq.o obj-$(CONFIG_PINCTRL_INGENIC) += pinctrl-ingenic.o obj-$(CONFIG_PINCTRL_RK805) += pinctrl-rk805.o obj-$(CONFIG_PINCTRL_OCELOT) += pinctrl-ocelot.o +obj-$(CONFIG_PINCTRL_MICROCHIP_SGPIO) += pinctrl-microchip-sgpio.o obj-$(CONFIG_PINCTRL_EQUILIBRIUM) += pinctrl-equilibrium.o obj-y += actions/ diff --git a/drivers/pinctrl/pinctrl-microchip-sgpio.c b/drivers/pinctrl/pinctrl-microchip-sgpio.c new file mode 100644 index 000000000000..ccee60bc9f77 --- /dev/null +++ b/drivers/pinctrl/pinctrl-microchip-sgpio.c @@ -0,0 +1,676 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Microsemi/Microchip SoCs serial gpio driver + * + * Author: + * + * Copyright (c) 2020 Microchip Technology Inc. and its subsidiaries. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "core.h" +#include "pinconf.h" +#include "pinmux.h" + +#define SGPIO_BITS_PER_WORD 32 +#define SGPIO_MAX_BITS 4 + +#define PIN_NAM_SZ (sizeof("SGPIO_D_pXXbY")+1) + +enum { + REG_INPUT_DATA, + REG_PORT_CONFIG, + REG_PORT_ENABLE, + REG_SIO_CONFIG, + REG_SIO_CLOCK, + MAXREG +}; + +struct sgpio_properties { + u8 regoff[MAXREG]; + u32 auto_repeat; + u32 port_width; + u32 clk_freq; + u32 bit_source; +}; + +#define __shf(x) (__builtin_ffsll(x) - 1) +#define __BF_PREP(bf, x) (bf & ((x) << __shf(bf))) +#define __BF_GET(bf, x) (((x & bf) >> __shf(bf))) + +#define SGPIO_M_CFG_SIO_AUTO_REPEAT(p) ((p)->properties->auto_repeat) +#define SGPIO_F_CFG_SIO_PORT_WIDTH(p, x) __BF_PREP((p)->properties->port_width, x) +#define SGPIO_M_CFG_SIO_PORT_WIDTH(p) ((p)->properties->port_width) +#define SGPIO_F_CLOCK_SIO_CLK_FREQ(p, x) __BF_PREP((p)->properties->clk_freq, x) +#define SGPIO_M_CLOCK_SIO_CLK_FREQ(p) ((p)->properties->clk_freq) +#define SGPIO_F_PORT_CFG_BIT_SOURCE(p, x) __BF_PREP((p)->properties->bit_source, x) +#define SGPIO_X_PORT_CFG_BIT_SOURCE(p, x) __BF_GET((p)->properties->bit_source, x) + +const struct sgpio_properties properties_luton = { + .regoff = { 0x00, 0x09, 0x29, 0x2a, 0x2b }, + .auto_repeat = BIT(5), + .port_width = GENMASK(3, 2), + .clk_freq = GENMASK(11, 0), + .bit_source = GENMASK(11, 0), +}; + +const struct sgpio_properties properties_ocelot = { + .regoff = { 0x00, 0x06, 0x26, 0x04, 0x05 }, + .auto_repeat = BIT(10), + .port_width = GENMASK(8, 7), + .clk_freq = GENMASK(19, 8), + .bit_source = GENMASK(23, 12), +}; + +const struct sgpio_properties properties_sparx5 = { + .regoff = { 0x00, 0x06, 0x26, 0x04, 0x05 }, + .auto_repeat = BIT(6), + .port_width = GENMASK(4, 3), + .clk_freq = GENMASK(19, 8), + .bit_source = GENMASK(23, 12), +}; + +static const char * const functions[] = { "gpio" }; + +struct sgpio_priv { + struct device *dev; + /* 2 banks: IN/OUT */ + struct { + struct gpio_chip gpio; + struct pinctrl_desc pctl_desc; + struct pinctrl_dev *pctl_dev; + } bank[2]; + u32 bitcount; + u32 ports; + u32 clock; + u32 __iomem *regs; + const struct sgpio_properties *properties; +}; + +struct sgpio_port_addr { + u8 port; + u8 bit; +}; + +static inline bool sgpio_pctl_is_input(struct sgpio_priv *priv, + struct pinctrl_dev *pctl) +{ + /* 1st index is input */ + return pctl == priv->bank[0].pctl_dev; +} + +static inline bool sgpio_gpio_is_input(struct sgpio_priv *priv, + struct gpio_chip *gc) +{ + /* 1st index is input */ + return gc == &priv->bank[0].gpio; +} + +static inline void sgpio_pin_to_addr(struct sgpio_priv *priv, int pin, + struct sgpio_port_addr *addr) +{ + addr->port = pin / priv->bitcount; + addr->bit = pin % priv->bitcount; +} + +static inline u32 sgpio_readl(struct sgpio_priv *priv, u32 rno, u32 off) +{ + u32 __iomem *reg = &priv->regs[priv->properties->regoff[rno] + off]; + + return readl(reg); +} + +static inline void sgpio_writel(struct sgpio_priv *priv, + u32 val, u32 rno, u32 off) +{ + u32 __iomem *reg = &priv->regs[priv->properties->regoff[rno] + off]; + + writel(val, reg); +} + +static inline void sgpio_clrsetbits(struct sgpio_priv *priv, + u32 rno, u32 off, u32 clear, u32 set) +{ + u32 __iomem *reg = &priv->regs[priv->properties->regoff[rno] + off]; + u32 val = readl(reg); + + val &= ~clear; + val |= set; + + writel(val, reg); +} + +static void sgpio_output_set(struct sgpio_priv *priv, + struct sgpio_port_addr *addr, + int value) +{ + u32 mask = 3 << (3 * addr->bit); + + value = (value & 3) << (3 * addr->bit); + sgpio_clrsetbits(priv, REG_PORT_CONFIG, addr->port, + SGPIO_F_PORT_CFG_BIT_SOURCE(priv, mask), + SGPIO_F_PORT_CFG_BIT_SOURCE(priv, value)); +} + +static int sgpio_output_get(struct sgpio_priv *priv, + struct sgpio_port_addr *addr) +{ + u32 portval = sgpio_readl(priv, REG_PORT_CONFIG, addr->port); + int ret; + + ret = SGPIO_X_PORT_CFG_BIT_SOURCE(priv, portval); + ret = !!(ret & (3 << (3 * addr->bit))); + + return ret; +} + +static int sgpio_input_get(struct sgpio_priv *priv, + struct sgpio_port_addr *addr) +{ + int ret; + + ret = !!(sgpio_readl(priv, REG_INPUT_DATA, addr->bit) & + BIT(addr->port)); + + return ret; +} + +static int sgpio_pinconf_get(struct pinctrl_dev *pctldev, + unsigned int pin, unsigned long *config) +{ + struct sgpio_priv *priv = pinctrl_dev_get_drvdata(pctldev); + bool is_input = sgpio_pctl_is_input(priv, pctldev); + struct sgpio_port_addr addr; + u32 param = pinconf_to_config_param(*config); + int val; + + sgpio_pin_to_addr(priv, pin, &addr); + + switch (param) { + case PIN_CONFIG_INPUT_ENABLE: + val = is_input; + break; + + case PIN_CONFIG_OUTPUT_ENABLE: + val = !is_input; + break; + + case PIN_CONFIG_OUTPUT: + if (is_input) + return -EINVAL; + val = sgpio_output_get(priv, &addr); + break; + + default: + return -EOPNOTSUPP; + } + + *config = pinconf_to_config_packed(param, val); + + return 0; +} + +static int sgpio_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin, + unsigned long *configs, unsigned int num_configs) +{ + struct sgpio_priv *priv = pinctrl_dev_get_drvdata(pctldev); + bool is_input = sgpio_pctl_is_input(priv, pctldev); + struct sgpio_port_addr addr; + u32 param, arg; + int cfg, err = 0; + + sgpio_pin_to_addr(priv, pin, &addr); + + for (cfg = 0; cfg < num_configs; cfg++) { + param = pinconf_to_config_param(configs[cfg]); + arg = pinconf_to_config_argument(configs[cfg]); + + switch (param) { + case PIN_CONFIG_OUTPUT: + if (is_input) + return -EINVAL; + sgpio_output_set(priv, &addr, arg); + break; + + default: + err = -EOPNOTSUPP; + } + } + + return err; +} + +static const struct pinconf_ops sgpio_confops = { + .is_generic = true, + .pin_config_get = sgpio_pinconf_get, + .pin_config_set = sgpio_pinconf_set, + .pin_config_config_dbg_show = pinconf_generic_dump_config, +}; + +static int sgpio_get_functions_count(struct pinctrl_dev *pctldev) +{ + return 1; +} + +static const char *sgpio_get_function_name(struct pinctrl_dev *pctldev, + unsigned int function) +{ + return functions[0]; +} + +static int sgpio_get_function_groups(struct pinctrl_dev *pctldev, + unsigned int function, + const char *const **groups, + unsigned *const num_groups) +{ + *groups = functions; + *num_groups = ARRAY_SIZE(functions); + + return 0; +} + +static int sgpio_pinmux_set_mux(struct pinctrl_dev *pctldev, + unsigned int selector, unsigned int group) +{ + return 0; +} + +static int sgpio_gpio_set_direction(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range, + unsigned int pin, bool input) +{ + struct sgpio_priv *priv = pinctrl_dev_get_drvdata(pctldev); + + if (input != sgpio_pctl_is_input(priv, pctldev)) { + dev_err(priv->dev, "Pin %d direction as %s is not possible\n", + pin, input ? "input" : "output"); + return -EINVAL; + } + + return 0; +} + +static int sgpio_gpio_request_enable(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range, + unsigned int offset) +{ + struct sgpio_priv *priv = pinctrl_dev_get_drvdata(pctldev); + struct sgpio_port_addr addr; + + sgpio_pin_to_addr(priv, offset, &addr); + + if ((priv->ports & BIT(addr.port)) == 0) { + dev_warn(priv->dev, "%s: Request port %d for pin %d is not activated\n", + __func__, addr.port, offset); + } + + return 0; +} + +static const struct pinmux_ops sgpio_pmx_ops = { + .get_functions_count = sgpio_get_functions_count, + .get_function_name = sgpio_get_function_name, + .get_function_groups = sgpio_get_function_groups, + .set_mux = sgpio_pinmux_set_mux, + .gpio_set_direction = sgpio_gpio_set_direction, + .gpio_request_enable = sgpio_gpio_request_enable, +}; + +static int sgpio_pctl_get_groups_count(struct pinctrl_dev *pctldev) +{ + struct sgpio_priv *priv = pinctrl_dev_get_drvdata(pctldev); + int bank = !sgpio_pctl_is_input(priv, pctldev); + + return priv->bank[bank].pctl_desc.npins; +} + +static const char *sgpio_pctl_get_group_name(struct pinctrl_dev *pctldev, + unsigned int group) +{ + struct sgpio_priv *priv = pinctrl_dev_get_drvdata(pctldev); + int bank = !sgpio_pctl_is_input(priv, pctldev); + + return priv->bank[bank].pctl_desc.pins[group].name; +} + +static int sgpio_pctl_get_group_pins(struct pinctrl_dev *pctldev, + unsigned int group, + const unsigned int **pins, + unsigned int *num_pins) +{ + struct sgpio_priv *priv = pinctrl_dev_get_drvdata(pctldev); + int bank = !sgpio_pctl_is_input(priv, pctldev); + + *pins = &priv->bank[bank].pctl_desc.pins[group].number; + *num_pins = 1; + + return 0; +} + +static const struct pinctrl_ops sgpio_pctl_ops = { + .get_groups_count = sgpio_pctl_get_groups_count, + .get_group_name = sgpio_pctl_get_group_name, + .get_group_pins = sgpio_pctl_get_group_pins, + .dt_node_to_map = pinconf_generic_dt_node_to_map_pin, + .dt_free_map = pinconf_generic_dt_free_map, +}; + +static int microchip_sgpio_direction_input(struct gpio_chip *gc, unsigned int gpio) +{ + struct sgpio_priv *priv = gpiochip_get_data(gc); + + /* Fixed-position function */ + return sgpio_gpio_is_input(priv, gc) ? 0 : -EINVAL; +} + +static int microchip_sgpio_direction_output(struct gpio_chip *gc, + unsigned int gpio, int value) +{ + struct sgpio_priv *priv = gpiochip_get_data(gc); + bool is_input = sgpio_gpio_is_input(priv, gc); + struct sgpio_port_addr addr; + + sgpio_pin_to_addr(priv, gpio, &addr); + + /* Fixed-position function */ + if (is_input) + return -EINVAL; + + sgpio_output_set(priv, &addr, value); + + return 0; +} + +static int microchip_sgpio_get_direction(struct gpio_chip *gc, unsigned int gpio) +{ + struct sgpio_priv *priv = gpiochip_get_data(gc); + + return sgpio_gpio_is_input(priv, gc); /* 0=out, 1=in */ +} + +static void microchip_sgpio_set_value(struct gpio_chip *gc, + unsigned int gpio, int value) +{ + microchip_sgpio_direction_output(gc, gpio, value); +} + +static int microchip_sgpio_get_value(struct gpio_chip *gc, unsigned int gpio) +{ + struct sgpio_priv *priv = gpiochip_get_data(gc); + struct sgpio_port_addr addr; + int ret; + + sgpio_pin_to_addr(priv, gpio, &addr); + + if (sgpio_gpio_is_input(priv, gc)) + ret = sgpio_input_get(priv, &addr); + else + ret = sgpio_output_get(priv, &addr); + + return ret; +} + +static int microchip_sgpio_of_xlate(struct gpio_chip *gc, + const struct of_phandle_args *gpiospec, + u32 *flags) +{ + struct sgpio_priv *priv = gpiochip_get_data(gc); + int pin; + + if (gpiospec->args[0] > SGPIO_BITS_PER_WORD || + gpiospec->args[1] > priv->bitcount) + return -EINVAL; + + pin = gpiospec->args[1] + (gpiospec->args[0] * priv->bitcount); + + if (pin > gc->ngpio) + return -EINVAL; + + if (flags) + *flags = gpiospec->args[2]; + + return pin; +} + +static int microchip_sgpio_get_ports(struct sgpio_priv *priv) +{ + struct device *dev = priv->dev; + struct device_node *np = dev->of_node; + int i, ret; + u32 range_params[64]; + + /* Calculate port mask */ + ret = of_property_read_variable_u32_array(np, + "microchip,sgpio-port-ranges", + range_params, + 2, + ARRAY_SIZE(range_params)); + if (ret < 0 || ret % 2) { + dev_err(dev, "%s port range\n", + ret == -EINVAL ? "Missing" : "Invalid"); + return ret; + } + for (i = 0; i < ret; i += 2) { + int start, end; + + start = range_params[i]; + end = range_params[i + 1]; + if (start > end || end >= SGPIO_BITS_PER_WORD) { + dev_err(dev, "Ill-formed port-range [%d:%d]\n", + start, end); + } + priv->ports |= GENMASK(end, start); + } + + return 0; +} + +static int microchip_sgpio_register_bank(struct device *dev, + struct sgpio_priv *priv, + struct fwnode_handle *fwnode, + int bank) +{ + struct pinctrl_dev *pctl; + struct pinctrl_pin_desc *pins; + struct pinctrl_desc *pctl_desc; + struct gpio_chip *gc; + bool is_input = (bank == 0); + int ret; + u32 ngpios; + + if (fwnode_property_read_u32(fwnode, "ngpios", &ngpios)) { + dev_info(dev, "failed to get number of gpios for bank%d\n", + bank); + ngpios = 64; + } + + priv->bitcount = ngpios / SGPIO_BITS_PER_WORD; + if (priv->bitcount > SGPIO_MAX_BITS) { + dev_err(dev, "Bit width exceeds maximum (%d)\n", + SGPIO_MAX_BITS); + return -EINVAL; + } + + pctl_desc = &priv->bank[bank].pctl_desc; + pctl_desc->name = devm_kasprintf(dev, GFP_KERNEL, "%s-%sput", + dev_name(dev), + is_input ? "in" : "out"); + pctl_desc->pctlops = &sgpio_pctl_ops; + pctl_desc->pmxops = &sgpio_pmx_ops; + pctl_desc->confops = &sgpio_confops; + pctl_desc->owner = THIS_MODULE; + + pins = devm_kzalloc(dev, sizeof(*pins)*ngpios, GFP_KERNEL); + if (pins) { + int i; + char *p, *names; + + names = devm_kzalloc(dev, PIN_NAM_SZ*ngpios, GFP_KERNEL); + + if (!names) + return -ENOMEM; + + pctl_desc->npins = ngpios; + pctl_desc->pins = pins; + + for (p = names, i = 0; i < ngpios; i++, p += PIN_NAM_SZ) { + struct sgpio_port_addr addr; + + sgpio_pin_to_addr(priv, i, &addr); + snprintf(p, PIN_NAM_SZ, "SGPIO_%c_p%db%d", + is_input ? 'I' : 'O', + addr.port, addr.bit); + pins[i].number = i; + pins[i].name = p; + } + } else + return -ENOMEM; + + pctl = devm_pinctrl_register(dev, pctl_desc, priv); + if (IS_ERR(pctl)) { + dev_err(dev, "Failed to register pinctrl\n"); + return PTR_ERR(pctl); + } + + gc = &priv->bank[bank].gpio; + gc->label = pctl_desc->name; + gc->parent = dev; + gc->of_node = to_of_node(fwnode); + gc->owner = THIS_MODULE; + gc->get_direction = microchip_sgpio_get_direction; + gc->direction_input = microchip_sgpio_direction_input; + gc->direction_output = microchip_sgpio_direction_output; + gc->get = microchip_sgpio_get_value; + gc->set = microchip_sgpio_set_value; + gc->request = gpiochip_generic_request; + gc->free = gpiochip_generic_free; + gc->of_xlate = microchip_sgpio_of_xlate; + gc->of_gpio_n_cells = 3; + gc->base = -1; + gc->ngpio = ngpios; + + ret = devm_gpiochip_add_data(dev, gc, priv); + if (ret == 0) + dev_info(pctl->dev, "Registered %d GPIOs\n", ngpios); + else + dev_err(pctl->dev, "Failed to register: ret %d\n", ret); + + priv->bank[bank].pctl_dev = pctl; + + return ret; +} + +static int microchip_sgpio_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct fwnode_handle *fwnode; + struct sgpio_priv *priv; + int div_clock = 0, ret, port; + u32 val; + struct resource *regs; + struct clk *clk; + int i, nbanks; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->dev = dev; + + /* Get clock */ + clk = devm_clk_get(dev, NULL); + if (IS_ERR(clk)) { + dev_err(dev, "Failed to get clock\n"); + return PTR_ERR(clk); + } + div_clock = clk_get_rate(clk); + if (device_property_read_u32(dev, "microchip,sgpio-frequency", + &priv->clock)) + priv->clock = 12500000; + if (priv->clock <= 0 || priv->clock > div_clock) { + dev_err(dev, "Invalid frequency %d\n", priv->clock); + return -EINVAL; + } + + /* Get register map */ + regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); + priv->regs = devm_ioremap_resource(dev, regs); + if (IS_ERR(priv->regs)) + return PTR_ERR(priv->regs); + priv->properties = of_device_get_match_data(dev); + + /* Get rest of device properties */ + ret = microchip_sgpio_get_ports(priv); + if (ret) + return ret; + + nbanks = device_get_child_node_count(dev); + if (nbanks != 2) { + dev_err(dev, "Must have 2 banks (have %d)\n", nbanks); + return -EINVAL; + } + + i = 0; + device_for_each_child_node(dev, fwnode) { + ret = microchip_sgpio_register_bank(dev, priv, fwnode, i++); + if (ret) + return ret; + } + + if (priv->bank[0].gpio.ngpio != priv->bank[0].gpio.ngpio) { + dev_err(dev, "Banks must have same GPIO count\n"); + return -EINVAL; + } + + sgpio_clrsetbits(priv, REG_SIO_CONFIG, 0, + SGPIO_M_CFG_SIO_PORT_WIDTH(priv), + SGPIO_F_CFG_SIO_PORT_WIDTH(priv, priv->bitcount - 1) | + SGPIO_M_CFG_SIO_AUTO_REPEAT(priv)); + val = max(2U, div_clock / priv->clock); + sgpio_clrsetbits(priv, REG_SIO_CLOCK, 0, + SGPIO_M_CLOCK_SIO_CLK_FREQ(priv), + SGPIO_F_CLOCK_SIO_CLK_FREQ(priv, val)); + + for (port = 0; port < SGPIO_BITS_PER_WORD; port++) + sgpio_writel(priv, 0, REG_PORT_CONFIG, port); + sgpio_writel(priv, priv->ports, REG_PORT_ENABLE, 0); + + return 0; +} + +static const struct of_device_id microchip_sgpio_gpio_of_match[] = { + { + .compatible = "microchip,sparx5-sgpio", + .data = &properties_sparx5, + }, { + .compatible = "mscc,luton-sgpio", + .data = &properties_luton, + }, { + .compatible = "mscc,ocelot-sgpio", + .data = &properties_ocelot, + }, { + /* sentinel */ + } +}; + +static struct platform_driver microchip_sgpio_pinctrl_driver = { + .driver = { + .name = "pinctrl-microchip-sgpio", + .of_match_table = microchip_sgpio_gpio_of_match, + .suppress_bind_attrs = true, + }, + .probe = microchip_sgpio_probe, +}; +builtin_platform_driver(microchip_sgpio_pinctrl_driver); From patchwork Tue Oct 6 14:25:32 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lars Povlsen X-Patchwork-Id: 11818735 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4593D13B2 for ; 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d="scan'208";a="93581421" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa5.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 06 Oct 2020 07:25:55 -0700 Received: from chn-vm-ex01.mchp-main.com (10.10.85.143) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Tue, 6 Oct 2020 07:25:54 -0700 Received: from soft-dev10.microsemi.net (10.10.115.15) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server id 15.1.1979.3 via Frontend Transport; Tue, 6 Oct 2020 07:25:41 -0700 From: Lars Povlsen To: Linus Walleij Subject: [RESEND PATCH v3 3/3] arm64: dts: sparx5: Add SGPIO devices Date: Tue, 6 Oct 2020 16:25:32 +0200 Message-ID: <20201006142532.2247515-4-lars.povlsen@microchip.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201006142532.2247515-1-lars.povlsen@microchip.com> References: <20201006142532.2247515-1-lars.povlsen@microchip.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201006_102556_812321_D9BA36C6 X-CRM114-Status: GOOD ( 11.32 ) X-Spam-Score: -2.5 (--) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-2.5 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [216.71.150.166 listed in list.dnswl.org] 0.0 RCVD_IN_MSPIKE_H4 RBL: Very Good reputation (+4) [216.71.150.166 listed in wl.mailspike.net] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Alexandre Belloni , linux-kernel@vger.kernel.org, Microchip Linux Driver Support , linux-gpio@vger.kernel.org, Lars Povlsen , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This adds SGPIO devices for the Sparx5 SoC and configures it for the applicable reference boards. Signed-off-by: Lars Povlsen --- arch/arm64/boot/dts/microchip/sparx5.dtsi | 91 ++++++ .../boot/dts/microchip/sparx5_pcb125.dts | 5 + .../dts/microchip/sparx5_pcb134_board.dtsi | 262 ++++++++++++++++++ .../dts/microchip/sparx5_pcb135_board.dtsi | 57 ++++ 4 files changed, 415 insertions(+) -- 2.25.1 diff --git a/arch/arm64/boot/dts/microchip/sparx5.dtsi b/arch/arm64/boot/dts/microchip/sparx5.dtsi index fc1c7807249f..326ace6d35a3 100644 --- a/arch/arm64/boot/dts/microchip/sparx5.dtsi +++ b/arch/arm64/boot/dts/microchip/sparx5.dtsi @@ -232,6 +232,22 @@ si2_pins: si2-pins { function = "si2"; }; + sgpio0_pins: sgpio-pins { + pins = "GPIO_0", "GPIO_1", "GPIO_2", "GPIO_3"; + function = "sg0"; + }; + + sgpio1_pins: sgpio1-pins { + pins = "GPIO_4", "GPIO_5", "GPIO_12", "GPIO_13"; + function = "sg1"; + }; + + sgpio2_pins: sgpio2-pins { + pins = "GPIO_30", "GPIO_31", "GPIO_32", + "GPIO_33"; + function = "sg2"; + }; + uart_pins: uart-pins { pins = "GPIO_10", "GPIO_11"; function = "uart"; @@ -262,6 +278,81 @@ emmc_pins: emmc-pins { }; }; + sgpio0: gpio@61101036c { + #address-cells = <1>; + #size-cells = <0>; + compatible = "microchip,sparx5-sgpio"; + status = "disabled"; + clocks = <&sys_clk>; + pinctrl-0 = <&sgpio0_pins>; + pinctrl-names = "default"; + reg = <0x6 0x1101036c 0x100>; + sgpio_in0: gpio-controller@0 { + compatible = "microchip,sparx5-sgpio-bank"; + reg = <0>; + gpio-controller; + #gpio-cells = <3>; + ngpios = <96>; + }; + sgpio_out0: gpio-controller@1 { + compatible = "microchip,sparx5-sgpio-bank"; + reg = <1>; + gpio-controller; + #gpio-cells = <3>; + ngpios = <96>; + }; + }; + + sgpio1: gpio@611010484 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "microchip,sparx5-sgpio"; + status = "disabled"; + clocks = <&sys_clk>; + pinctrl-0 = <&sgpio1_pins>; + pinctrl-names = "default"; + reg = <0x6 0x11010484 0x100>; + sgpio_in1: gpio-controller@0 { + compatible = "microchip,sparx5-sgpio-bank"; + reg = <0>; + gpio-controller; + #gpio-cells = <3>; + ngpios = <96>; + }; + sgpio_out1: gpio-controller@1 { + compatible = "microchip,sparx5-sgpio-bank"; + reg = <1>; + gpio-controller; + #gpio-cells = <3>; + ngpios = <96>; + }; + }; + + sgpio2: gpio@61101059c { + #address-cells = <1>; + #size-cells = <0>; + compatible = "microchip,sparx5-sgpio"; + status = "disabled"; + clocks = <&sys_clk>; + pinctrl-0 = <&sgpio2_pins>; + pinctrl-names = "default"; + reg = <0x6 0x1101059c 0x100>; + sgpio_in2: gpio-controller@0 { + reg = <0>; + compatible = "microchip,sparx5-sgpio-bank"; + gpio-controller; + #gpio-cells = <3>; + ngpios = <96>; + }; + sgpio_out2: gpio-controller@1 { + compatible = "microchip,sparx5-sgpio-bank"; + reg = <1>; + gpio-controller; + #gpio-cells = <3>; + ngpios = <96>; + }; + }; + i2c0: i2c@600101000 { compatible = "snps,designware-i2c"; status = "disabled"; diff --git a/arch/arm64/boot/dts/microchip/sparx5_pcb125.dts b/arch/arm64/boot/dts/microchip/sparx5_pcb125.dts index 6b2da7c7520c..9baa085d7861 100644 --- a/arch/arm64/boot/dts/microchip/sparx5_pcb125.dts +++ b/arch/arm64/boot/dts/microchip/sparx5_pcb125.dts @@ -69,6 +69,11 @@ spi-flash@9 { }; }; +&sgpio0 { + status = "okay"; + microchip,sgpio-port-ranges = <0 23>; +}; + &i2c1 { status = "okay"; }; diff --git a/arch/arm64/boot/dts/microchip/sparx5_pcb134_board.dtsi b/arch/arm64/boot/dts/microchip/sparx5_pcb134_board.dtsi index 35984785d611..9571f14ba51e 100644 --- a/arch/arm64/boot/dts/microchip/sparx5_pcb134_board.dtsi +++ b/arch/arm64/boot/dts/microchip/sparx5_pcb134_board.dtsi @@ -36,6 +36,242 @@ gpio-restart { gpios = <&gpio 37 GPIO_ACTIVE_LOW>; priority = <200>; }; + + leds { + compatible = "gpio-leds"; + led@0 { + label = "twr0:green"; + gpios = <&sgpio_out0 8 0 GPIO_ACTIVE_LOW>; + }; + led@1 { + label = "twr0:yellow"; + gpios = <&sgpio_out0 8 1 GPIO_ACTIVE_LOW>; + }; + led@2 { + label = "twr1:green"; + gpios = <&sgpio_out0 9 0 GPIO_ACTIVE_LOW>; + }; + led@3 { + label = "twr1:yellow"; + gpios = <&sgpio_out0 9 1 GPIO_ACTIVE_LOW>; + }; + led@4 { + label = "twr2:green"; + gpios = <&sgpio_out0 10 0 GPIO_ACTIVE_LOW>; + }; + led@5 { + label = "twr2:yellow"; + gpios = <&sgpio_out0 10 1 GPIO_ACTIVE_LOW>; + }; + led@6 { + label = "twr3:green"; + gpios = <&sgpio_out0 11 0 GPIO_ACTIVE_LOW>; + }; + led@7 { + label = "twr3:yellow"; + gpios = <&sgpio_out0 11 1 GPIO_ACTIVE_LOW>; + }; + led@8 { + label = "eth12:green"; + gpios = <&sgpio_out0 12 0 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@9 { + label = "eth12:yellow"; + gpios = <&sgpio_out0 12 1 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@10 { + label = "eth13:green"; + gpios = <&sgpio_out0 13 0 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@11 { + label = "eth13:yellow"; + gpios = <&sgpio_out0 13 1 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@12 { + label = "eth14:green"; + gpios = <&sgpio_out0 14 0 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@13 { + label = "eth14:yellow"; + gpios = <&sgpio_out0 14 1 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@14 { + label = "eth15:green"; + gpios = <&sgpio_out0 15 0 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@15 { + label = "eth15:yellow"; + gpios = <&sgpio_out0 15 1 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@16 { + label = "eth48:green"; + gpios = <&sgpio_out1 16 0 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@17 { + label = "eth48:yellow"; + gpios = <&sgpio_out1 16 1 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@18 { + label = "eth49:green"; + gpios = <&sgpio_out1 17 0 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@19 { + label = "eth49:yellow"; + gpios = <&sgpio_out1 17 1 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@20 { + label = "eth50:green"; + gpios = <&sgpio_out1 18 0 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@21 { + label = "eth50:yellow"; + gpios = <&sgpio_out1 18 1 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@22 { + label = "eth51:green"; + gpios = <&sgpio_out1 19 0 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@23 { + label = "eth51:yellow"; + gpios = <&sgpio_out1 19 1 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@24 { + label = "eth52:green"; + gpios = <&sgpio_out1 20 0 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@25 { + label = "eth52:yellow"; + gpios = <&sgpio_out1 20 1 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@26 { + label = "eth53:green"; + gpios = <&sgpio_out1 21 0 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@27 { + label = "eth53:yellow"; + gpios = <&sgpio_out1 21 1 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@28 { + label = "eth54:green"; + gpios = <&sgpio_out1 22 0 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@29 { + label = "eth54:yellow"; + gpios = <&sgpio_out1 22 1 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@30 { + label = "eth55:green"; + gpios = <&sgpio_out1 23 0 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@31 { + label = "eth55:yellow"; + gpios = <&sgpio_out1 23 1 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@32 { + label = "eth56:green"; + gpios = <&sgpio_out1 24 0 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@33 { + label = "eth56:yellow"; + gpios = <&sgpio_out1 24 1 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@34 { + label = "eth57:green"; + gpios = <&sgpio_out1 25 0 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@35 { + label = "eth57:yellow"; + gpios = <&sgpio_out1 25 1 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@36 { + label = "eth58:green"; + gpios = <&sgpio_out1 26 0 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@37 { + label = "eth58:yellow"; + gpios = <&sgpio_out1 26 1 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@38 { + label = "eth59:green"; + gpios = <&sgpio_out1 27 0 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@39 { + label = "eth59:yellow"; + gpios = <&sgpio_out1 27 1 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@40 { + label = "eth60:green"; + gpios = <&sgpio_out1 28 0 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@41 { + label = "eth60:yellow"; + gpios = <&sgpio_out1 28 1 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@42 { + label = "eth61:green"; + gpios = <&sgpio_out1 29 0 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@43 { + label = "eth61:yellow"; + gpios = <&sgpio_out1 29 1 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@44 { + label = "eth62:green"; + gpios = <&sgpio_out1 30 0 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@45 { + label = "eth62:yellow"; + gpios = <&sgpio_out1 30 1 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@46 { + label = "eth63:green"; + gpios = <&sgpio_out1 31 0 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + led@47 { + label = "eth63:yellow"; + gpios = <&sgpio_out1 31 1 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + }; }; &spi0 { @@ -54,6 +290,32 @@ spi-flash@9 { }; }; +&sgpio0 { + status = "okay"; + microchip,sgpio-port-ranges = <8 15>; +}; + +&sgpio_in0 { + ngpios = <64>; +}; + +&sgpio_out0 { + ngpios = <64>; +}; + +&sgpio1 { + status = "okay"; + microchip,sgpio-port-ranges = <24 31>; +}; + +&sgpio_in1 { + ngpios = <64>; +}; + +&sgpio_out1 { + ngpios = <64>; +}; + &gpio { i2cmux_pins_i: i2cmux-pins-i { pins = "GPIO_16", "GPIO_17", "GPIO_18", "GPIO_19", diff --git a/arch/arm64/boot/dts/microchip/sparx5_pcb135_board.dtsi b/arch/arm64/boot/dts/microchip/sparx5_pcb135_board.dtsi index 7de66806b14b..c85e4d6900b6 100644 --- a/arch/arm64/boot/dts/microchip/sparx5_pcb135_board.dtsi +++ b/arch/arm64/boot/dts/microchip/sparx5_pcb135_board.dtsi @@ -20,6 +20,50 @@ gpio-restart { gpios = <&gpio 37 GPIO_ACTIVE_LOW>; priority = <200>; }; + + leds { + compatible = "gpio-leds"; + led@0 { + label = "eth60:yellow"; + gpios = <&sgpio_out1 28 0 GPIO_ACTIVE_LOW>; + default-state = "off"; + }; + led@1 { + label = "eth60:green"; + gpios = <&sgpio_out1 28 1 GPIO_ACTIVE_LOW>; + default-state = "off"; + }; + led@2 { + label = "eth61:yellow"; + gpios = <&sgpio_out1 29 0 GPIO_ACTIVE_LOW>; + default-state = "off"; + }; + led@3 { + label = "eth61:green"; + gpios = <&sgpio_out1 29 1 GPIO_ACTIVE_LOW>; + default-state = "off"; + }; + led@4 { + label = "eth62:yellow"; + gpios = <&sgpio_out1 30 0 GPIO_ACTIVE_LOW>; + default-state = "off"; + }; + led@5 { + label = "eth62:green"; + gpios = <&sgpio_out1 30 1 GPIO_ACTIVE_LOW>; + default-state = "off"; + }; + led@6 { + label = "eth63:yellow"; + gpios = <&sgpio_out1 31 0 GPIO_ACTIVE_LOW>; + default-state = "off"; + }; + led@7 { + label = "eth63:green"; + gpios = <&sgpio_out1 31 1 GPIO_ACTIVE_LOW>; + default-state = "off"; + }; + }; }; &gpio { @@ -67,6 +111,19 @@ spi-flash@9 { }; }; +&sgpio1 { + status = "okay"; + microchip,sgpio-port-ranges = <24 31>; +}; + +&sgpio_in1 { + ngpios = <64>; +}; + +&sgpio_out1 { + ngpios = <64>; +}; + &axi { i2c0_imux: i2c0-imux@0 { compatible = "i2c-mux-pinctrl";