From patchwork Wed May 13 14:11:32 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lars Povlsen X-Patchwork-Id: 1289335 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=microchip.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=microchip.com header.i=@microchip.com header.a=rsa-sha256 header.s=mchp header.b=JAcD5w+Y; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 49Mc6p5cD2z9sTf for ; Thu, 14 May 2020 00:11:46 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731192AbgEMOLp (ORCPT ); Wed, 13 May 2020 10:11:45 -0400 Received: from esa1.microchip.iphmx.com ([68.232.147.91]:49833 "EHLO esa1.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388793AbgEMOLp (ORCPT ); Wed, 13 May 2020 10:11:45 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1589379105; x=1620915105; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=34twIogV2VXK/5cBS72qnRikOQ0cr6shYcbN5Zkqzio=; b=JAcD5w+Ygp5/z9diRzluAXs9/8TtJirEwKht0TUDg2wkvPzyBgeEx6s2 fn+OujZMEyOLjN4CsD8z72joJL36lBPYoY+hjsE9rXinjD8FHokUam2oe t8RjXG6kRsRcittEbFECfJHGeSXtKOgN4FOdFikuHmYS12Ql6xhhvpiXj aoR6wm98Tl2lsRixql4PtIeAX6OvdOB/BjFj+PIPyYblHMNnB2HzMZlPS SxmI7NTNnflK3fJQtG704C9o8z2y6txHue65S8rMthJwVjMyXeXHKOYWV gUgyAu4O/aMujL9chp5X+H7VWHl8RKqy064nQAiyTZp+RJ+ime6RM6QCS w==; IronPort-SDR: 1Od7ZgHDf3L4nkg5mwvATSydVTQ86uLwEiNi85EJaP111dxqzLBA+OxfAvvy9dWvLYoCKZdqvB ovc2q9wkw/Yo4/jGc+VJOnD2+CTYBxKtnHPED5U8Cwk9DRwf6uR8girTu+/q2BEFw5eibcRpJY FXL+yds+jxjKZGYEv/AvG/PCNhX4CeS775uEInmoQ8gpHaO+pMAvUZvAgkX11IZVeLLAWurqiV kGEv5oFfQePXM65mjiPGt+jr8t5W9huziq/Es9bu/Db5vDcx6+/vZ3CivTNnr4Ep0yiLyr6Ki7 J40= X-IronPort-AV: E=Sophos;i="5.73,388,1583218800"; d="scan'208";a="79449768" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa1.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 13 May 2020 07:11:44 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Wed, 13 May 2020 07:11:47 -0700 Received: from soft-dev15.microsemi.net (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.1713.5 via Frontend Transport; Wed, 13 May 2020 07:11:42 -0700 From: Lars Povlsen To: SoC Team , Linus Walleij , "Rob Herring" CC: Lars Povlsen , Microchip Linux Driver Support , , , , , Alexandre Belloni Subject: [PATCH 1/3] dt-bindings: pinctrl: Add bindings for mscc,ocelot-sgpio Date: Wed, 13 May 2020 16:11:32 +0200 Message-ID: <20200513141134.25819-2-lars.povlsen@microchip.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200513141134.25819-1-lars.povlsen@microchip.com> References: <20200513141134.25819-1-lars.povlsen@microchip.com> MIME-Version: 1.0 Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org This adds DT bindings for the Microsemi SGPIO controller, bindings mscc,ocelot-sgpio and mscc,luton-sgpio. Reviewed-by: Alexandre Belloni Signed-off-by: Lars Povlsen --- .../bindings/pinctrl/mscc,ocelot-sgpio.yaml | 66 +++++++++++++++++++ MAINTAINERS | 1 + include/dt-bindings/gpio/mchp-sgpio.h | 21 ++++++ 3 files changed, 88 insertions(+) create mode 100644 Documentation/devicetree/bindings/pinctrl/mscc,ocelot-sgpio.yaml create mode 100644 include/dt-bindings/gpio/mchp-sgpio.h -- 2.26.2 diff --git a/Documentation/devicetree/bindings/pinctrl/mscc,ocelot-sgpio.yaml b/Documentation/devicetree/bindings/pinctrl/mscc,ocelot-sgpio.yaml new file mode 100644 index 0000000000000..a332a0f4582fa --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/mscc,ocelot-sgpio.yaml @@ -0,0 +1,66 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pinctrl/mscc,ocelot-sgpio.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Microsemi Serial GPIO controller + +maintainers: + - Lars Povlsen + +description: | + By using a serial interface, the SIO controller significantly extend + the number of available GPIOs with a minimum number of additional + pins on the device. The primary purpose of the SIO controllers is to + connect control signals from SFP modules and to act as an LED + controller. + +properties: + $nodename: + pattern: "gpio" + + compatible: + enum: + - mscc,ocelot-sgpio + - mscc,luton-sgpio + + clocks: + maxItems: 1 + + gpio-controller: true + + '#gpio-cells': + description: Specifying the pin number and flags, as defined in + include/dt-bindings/gpio/gpio.h + const: 2 + + gpio-ranges: + maxItems: 1 + + microchip,sgpio-ports: + description: This is a 32-bit bitmask, configuring whether a + particular port in the controller is enabled or not. This allows + unused ports to be removed from the bitstream and reduce latency. + $ref: "/schemas/types.yaml#/definitions/uint32" + +required: + - compatible + - clocks + - gpio-controller + - '#gpio-cells' + - gpio-ranges + +examples: + - | + sgpio0: gpio@61101036c { + compatible = "mscc,ocelot-sgpio"; + clocks = <&sys_clk>; + pinctrl-0 = <&sgpio0_pins>; + pinctrl-names = "default"; + reg = <0x1101036c 0x100>; + gpio-controller; + #gpio-cells = <2>; + gpio-ranges = <&gpio 0 64 64>; + microchip,sgpio-ports = <0x00ffffff>; + }; diff --git a/MAINTAINERS b/MAINTAINERS index de64fd4548697..cdb63ca04670d 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -11233,6 +11233,7 @@ S: Supported F: Documentation/devicetree/bindings/mips/mscc.txt F: Documentation/devicetree/bindings/power/reset/ocelot-reset.txt F: Documentation/devicetree/bindings/spi/mscc,ocelot-spi.yaml +F: Documentation/devicetree/bindings/pinctrl/mscc,ocelot-sgpio.yaml F: arch/mips/boot/dts/mscc/ F: arch/mips/configs/generic/board-ocelot.config F: arch/mips/generic/board-ocelot.c diff --git a/include/dt-bindings/gpio/mchp-sgpio.h b/include/dt-bindings/gpio/mchp-sgpio.h new file mode 100644 index 0000000000000..0736158563f0a --- /dev/null +++ b/include/dt-bindings/gpio/mchp-sgpio.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * This header provides constants for binding mscc,*-sgpio + * + * The first cell in the SGPIO specifier is the GPIO ID. The macros below + * provide machros for this. + * + * The second cell contains standard flag values specified in gpio.h. + */ + +#ifndef _DT_BINDINGS_GPIO_MSCC_SGPIO_H +#define _DT_BINDINGS_GPIO_MSCC_SGPIO_H + +#include + +#define MSCC_SGPIOS_PER_BANK 32 +#define MSCC_SGPIO_BANK_DEPTH 4 + +#define MSCC_SGPIO(port, bit) ((bit * MSCC_SGPIOS_PER_BANK) + port) + +#endif From patchwork Wed May 13 14:11:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lars Povlsen X-Patchwork-Id: 1289340 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=microchip.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=microchip.com header.i=@microchip.com header.a=rsa-sha256 header.s=mchp header.b=2dXvAQ4r; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 49Mc731WFNz9sTq for ; Thu, 14 May 2020 00:11:59 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388812AbgEMOLs (ORCPT ); Wed, 13 May 2020 10:11:48 -0400 Received: from esa5.microchip.iphmx.com ([216.71.150.166]:63716 "EHLO esa5.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388793AbgEMOLs (ORCPT ); Wed, 13 May 2020 10:11:48 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1589379107; x=1620915107; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=4uSj6IEj06/F8qCJNjgPqJnrVD5PVPbd1aDsuvTeIJI=; b=2dXvAQ4ra7sbDzQ7joN9EfngKljyaQEfjbaYWP5a5axgUTs8Y1qa83ab mHEyy+FtREYzwE1QLH/uwM/X03GYqe0fgLy3pGZh9SszDbUvO0sGJGQgW XeLJvQq/QICpoM3mO6+HKisPtDLC+DkaEw6OaDt/1BSFIrZ02SNVHCYX0 cZIMIoWL9YytL3+ThvPGIAfFN3FSIO+2XdX7uAOqcs/bnfMopHJY2XXqy +jKHyfZtuWXKRNri1xbgZmuZ/sI2lAOapclH5eFbY+OBfvT0pEgUramOy +nJ/159vAouRRnyY0omrZgCqfOggpR6EA9SP+bBbRgkJI7x1f/ZBwjOsH Q==; IronPort-SDR: 7VqJgfXkqDGAQsb6Zvb9ArQqUPxffd1ahxF06tklllz0TtoZngMxUIbU1pCQWtz0ChJwQCKTJ/ o6irXbpes8UwjY9mJ5MtcmeDIworq8L4lPi101VTHa4N6670JNZg8DIZ50XvAt9/oYyggRBCb3 UCT/A0WtV0qwde86hpht09oycAcG+Wvaat/OqZelFMVEL792dT0u9MFzmmZpqo0cMDdMeLJk7E fj4IHYCmaQ3VicfBztZFTk7WfOJmvUe4ajaaLN+x7hyxB/Ljg31thRusl/Npix0kDuLvMoUeCA /h4= X-IronPort-AV: E=Sophos;i="5.73,388,1583218800"; d="scan'208";a="75776764" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa5.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 13 May 2020 07:11:47 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Wed, 13 May 2020 07:11:46 -0700 Received: from soft-dev15.microsemi.net (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.1713.5 via Frontend Transport; Wed, 13 May 2020 07:11:44 -0700 From: Lars Povlsen To: SoC Team , Linus Walleij CC: Lars Povlsen , Microchip Linux Driver Support , , , , , Alexandre Belloni Subject: [PATCH 2/3] pinctrl: mchp-sgpio: Add pinctrl driver for Microsemi Serial GPIO Date: Wed, 13 May 2020 16:11:33 +0200 Message-ID: <20200513141134.25819-3-lars.povlsen@microchip.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200513141134.25819-1-lars.povlsen@microchip.com> References: <20200513141134.25819-1-lars.povlsen@microchip.com> MIME-Version: 1.0 Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org This adds a pinctrl driver for the Microsemi/Microchip Serial GPIO (SGPIO) device used in various SoC's. Reviewed-by: Alexandre Belloni Signed-off-by: Lars Povlsen --- MAINTAINERS | 1 + drivers/pinctrl/Kconfig | 17 + drivers/pinctrl/Makefile | 1 + drivers/pinctrl/pinctrl-mchp-sgpio.c | 569 +++++++++++++++++++++++++++ 4 files changed, 588 insertions(+) create mode 100644 drivers/pinctrl/pinctrl-mchp-sgpio.c -- 2.26.2 diff --git a/MAINTAINERS b/MAINTAINERS index cdb63ca04670d..e5a7c41cdb6cd 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -11237,6 +11237,7 @@ F: Documentation/devicetree/bindings/pinctrl/mscc,ocelot-sgpio.yaml F: arch/mips/boot/dts/mscc/ F: arch/mips/configs/generic/board-ocelot.config F: arch/mips/generic/board-ocelot.c +F: drivers/pinctrl/pinctrl-mchp-sgpio.c MICROSEMI SMART ARRAY SMARTPQI DRIVER (smartpqi) M: Don Brace diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig index 834c59950d1cf..2b0e9021fd7e0 100644 --- a/drivers/pinctrl/Kconfig +++ b/drivers/pinctrl/Kconfig @@ -396,6 +396,23 @@ config PINCTRL_OCELOT select OF_GPIO select REGMAP_MMIO +config PINCTRL_MSCC_SGPIO + bool "Pinctrl driver for Microsemi 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 VCoreIII SoC serial GPIO device. 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 0b36a1cfca8a1..1146ecc373edf 100644 --- a/drivers/pinctrl/Makefile +++ b/drivers/pinctrl/Makefile @@ -47,6 +47,7 @@ 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_MSCC_SGPIO) += pinctrl-mchp-sgpio.o obj-$(CONFIG_PINCTRL_EQUILIBRIUM) += pinctrl-equilibrium.o obj-y += actions/ diff --git a/drivers/pinctrl/pinctrl-mchp-sgpio.c b/drivers/pinctrl/pinctrl-mchp-sgpio.c new file mode 100644 index 0000000000000..e609f11137f48 --- /dev/null +++ b/drivers/pinctrl/pinctrl-mchp-sgpio.c @@ -0,0 +1,569 @@ +// SPDX-License-Identifier: (GPL-2.0 OR MIT) +/* + * Microsemi 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 + +#include "core.h" +#include "pinconf.h" +#include "pinmux.h" + +#define PIN_NAME_LEN (sizeof("SGPIO_pXXbY")+1) + +enum { + REG_INPUT_DATA, + REG_PORT_CONFIG, + REG_PORT_ENABLE, + REG_SIO_CONFIG, + REG_SIO_CLOCK, + MAXREG +}; + +struct mchp_sgpio_bf { + u8 beg; + u8 end; +}; + +struct mchp_sgpio_props { + const char *label; + u8 regoff[MAXREG]; + struct mchp_sgpio_bf auto_repeat; + struct mchp_sgpio_bf port_width; + struct mchp_sgpio_bf clk_freq; + struct mchp_sgpio_bf bit_source; +}; + +#define __M(bf) GENMASK((bf).end, (bf).beg) +#define __F(bf, x) (__M(bf) & ((x) << (bf).beg)) +#define __X(bf, x) (((x) >> (bf).beg) & GENMASK(((bf).end - (bf).beg), 0)) + +#define MSCC_M_CFG_SIO_AUTO_REPEAT(p) BIT(p->props->auto_repeat.beg) +#define MSCC_F_CFG_SIO_PORT_WIDTH(p, x) __F(p->props->port_width, x) +#define MSCC_M_CFG_SIO_PORT_WIDTH(p) __M(p->props->port_width) +#define MSCC_F_CLOCK_SIO_CLK_FREQ(p, x) __F(p->props->clk_freq, x) +#define MSCC_M_CLOCK_SIO_CLK_FREQ(p) __M(p->props->clk_freq) +#define MSCC_F_PORT_CFG_BIT_SOURCE(p, x) __F(p->props->bit_source, x) +#define MSCC_X_PORT_CFG_BIT_SOURCE(p, x) __X(p->props->bit_source, x) + +const struct mchp_sgpio_props props_luton = { + .label = "luton-sgpio", + .regoff = { 0x00, 0x09, 0x29, 0x2a, 0x2b }, + .auto_repeat = { 5, 5 }, + .port_width = { 2, 3 }, + .clk_freq = { 0, 11 }, + .bit_source = { 0, 11 }, +}; + +const struct mchp_sgpio_props props_ocelot = { + .label = "ocelot-sgpio", + .regoff = { 0x00, 0x06, 0x26, 0x04, 0x05 }, + .auto_repeat = { 10, 10 }, + .port_width = { 7, 8 }, + .clk_freq = { 8, 19 }, + .bit_source = { 12, 23 }, +}; + +static const char * const functions[] = { "gpio" }; + +struct mchp_sgpio_priv { + struct device *dev; + struct pinctrl_dev *pctl; + struct gpio_chip gpio; + u32 bitcount; + u32 ports; + u32 clock; + u32 mode[MSCC_SGPIOS_PER_BANK]; + u32 __iomem *regs; + struct pinctrl_desc *desc; + const struct mchp_sgpio_props *props; +}; + +static inline u32 sgpio_readl(struct mchp_sgpio_priv *priv, u32 rno, u32 off) +{ + u32 __iomem *reg = &priv->regs[priv->props->regoff[rno] + off]; + + return readl(reg); +} + +static inline void sgpio_writel(struct mchp_sgpio_priv *priv, + u32 val, u32 rno, u32 off) +{ + u32 __iomem *reg = &priv->regs[priv->props->regoff[rno] + off]; + + writel(val, reg); +} + +static void sgpio_clrsetbits(struct mchp_sgpio_priv *priv, + u32 rno, u32 off, u32 clear, u32 set) +{ + u32 __iomem *reg = &priv->regs[priv->props->regoff[rno] + off]; + u32 val = readl(reg); + + val &= ~clear; + val |= set; + + writel(val, reg); +} + +static void sgpio_output_set(struct mchp_sgpio_priv *priv, + int pin, int value) +{ + u32 port = pin % MSCC_SGPIOS_PER_BANK; + u32 bit = pin / MSCC_SGPIOS_PER_BANK; + u32 mask = 3 << (3 * bit); + + dev_dbg(priv->dev, "%s: port %d, bit %d, value %d\n", + __func__, port, bit, value); + + value = (value & 3) << (3 * bit); + sgpio_clrsetbits(priv, REG_PORT_CONFIG, port, + MSCC_F_PORT_CFG_BIT_SOURCE(priv, mask), + MSCC_F_PORT_CFG_BIT_SOURCE(priv, value)); +} + +static int sgpio_output_get(struct mchp_sgpio_priv *priv, int pin) +{ + u32 port = pin % MSCC_SGPIOS_PER_BANK; + u32 bit = pin / MSCC_SGPIOS_PER_BANK; + u32 portval = sgpio_readl(priv, REG_PORT_CONFIG, port); + int ret; + + ret = MSCC_X_PORT_CFG_BIT_SOURCE(priv, portval); + ret = !!(ret & (3 << (3 * bit))); + + dev_dbg(priv->dev, "%s: port %d, bit %d, value %d\n", + __func__, port, bit, ret); + + return ret; +} + +static int sgpio_input_get(struct mchp_sgpio_priv *priv, int pin) +{ + u32 port = pin % MSCC_SGPIOS_PER_BANK; + u32 bit = pin / MSCC_SGPIOS_PER_BANK; + int ret; + + ret = !!(sgpio_readl(priv, REG_INPUT_DATA, bit) & BIT(port)); + + dev_dbg(priv->dev, "%s: port %d, bit %d, value %d\n", + __func__, port, bit, ret); + + return ret; +} + +static int sgpio_pinconf_get(struct pinctrl_dev *pctldev, + unsigned int pin, unsigned long *config) +{ + struct mchp_sgpio_priv *priv = pinctrl_dev_get_drvdata(pctldev); + u32 param = pinconf_to_config_param(*config); + int val; + + switch (param) { + case PIN_CONFIG_INPUT_ENABLE: + val = false; + break; + + case PIN_CONFIG_OUTPUT_ENABLE: + val = true; + break; + + case PIN_CONFIG_OUTPUT: + val = sgpio_output_get(priv, pin); + break; + + default: + return -ENOTSUPP; + } + + *config = pinconf_to_config_packed(param, val); + + return 0; +} + +int sgpio_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin, + unsigned long *configs, unsigned int num_configs) +{ + struct mchp_sgpio_priv *priv = pinctrl_dev_get_drvdata(pctldev); + u32 param, arg; + int cfg, err = 0; + + 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: + sgpio_output_set(priv, pin, arg); + break; + + default: + err = -ENOTSUPP; + } + } + + 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) +{ + struct mchp_sgpio_priv *priv = pinctrl_dev_get_drvdata(pctldev); + + dev_dbg(priv->dev, "%s\n", __func__); + return 1; +} + +static const char *sgpio_get_function_name(struct pinctrl_dev *pctldev, + unsigned int function) +{ + struct mchp_sgpio_priv *priv = pinctrl_dev_get_drvdata(pctldev); + + dev_dbg(priv->dev, "%s\n", __func__); + + return functions[0]; +} + +static int sgpio_get_function_groups(struct pinctrl_dev *pctldev, + unsigned int function, + const char *const **groups, + unsigned *const num_groups) +{ + struct mchp_sgpio_priv *priv = pinctrl_dev_get_drvdata(pctldev); + + dev_dbg(priv->dev, "%s\n", __func__); + + *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) +{ + struct mchp_sgpio_priv *priv = pinctrl_dev_get_drvdata(pctldev); + + dev_dbg(priv->dev, "%s: sel %d grp %d\n", __func__, selector, group); + + return 0; +} + +static int sgpio_gpio_set_direction(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range, + unsigned int pin, bool input) +{ + struct mchp_sgpio_priv *priv = pinctrl_dev_get_drvdata(pctldev); + + dev_dbg(priv->dev, "%s: pin %d input %d\n", __func__, pin, input); + + return 0; +} + +static int sgpio_gpio_request_enable(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range, + unsigned int offset) +{ + struct mchp_sgpio_priv *priv = pinctrl_dev_get_drvdata(pctldev); + + if ((priv->ports & BIT(offset)) == 0) { + dev_warn(priv->dev, "%s: Request port pin %d is not activated\n", + __func__, 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 mchp_sgpio_priv *priv = pinctrl_dev_get_drvdata(pctldev); + + return priv->desc->npins; +} + +static const char *sgpio_pctl_get_group_name(struct pinctrl_dev *pctldev, + unsigned int group) +{ + struct mchp_sgpio_priv *priv = pinctrl_dev_get_drvdata(pctldev); + + return priv->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 mchp_sgpio_priv *priv = pinctrl_dev_get_drvdata(pctldev); + + *pins = &priv->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 struct pinctrl_desc sgpio_desc = { + .name = "sgpio-pinctrl", + .pctlops = &sgpio_pctl_ops, + .pmxops = &sgpio_pmx_ops, + .confops = &sgpio_confops, + .owner = THIS_MODULE, +}; + +static int mchp_sgpio_direction_input(struct gpio_chip *gc, unsigned int gpio) +{ + struct mchp_sgpio_priv *priv = gpiochip_get_data(gc); + + u32 port = gpio % MSCC_SGPIOS_PER_BANK; + u32 bit = gpio / MSCC_SGPIOS_PER_BANK; + + /* Set mode => input mode */ + priv->mode[port] |= BIT(bit); + + return 0; +} + +static int mchp_sgpio_direction_output(struct gpio_chip *gc, + unsigned int gpio, int value) +{ + struct mchp_sgpio_priv *priv = gpiochip_get_data(gc); + u32 port = gpio % MSCC_SGPIOS_PER_BANK; + u32 bit = gpio / MSCC_SGPIOS_PER_BANK; + + sgpio_output_set(priv, gpio, value); + + /* Clear mode => output mode */ + priv->mode[port] &= ~BIT(bit); + + return 0; +} + +static int mchp_sgpio_get_function(struct gpio_chip *gc, unsigned int gpio) +{ + struct mchp_sgpio_priv *priv = gpiochip_get_data(gc); + u32 port = gpio % MSCC_SGPIOS_PER_BANK; + u32 bit = gpio / MSCC_SGPIOS_PER_BANK; + u32 val = priv->mode[port] & BIT(bit); + + return !!val; /* 0=out, 1=in */ +} + +static void mchp_sgpio_set_value(struct gpio_chip *gc, + unsigned int gpio, int value) +{ + mchp_sgpio_direction_output(gc, gpio, value); +} + +static int mchp_sgpio_get_value(struct gpio_chip *gc, unsigned int gpio) +{ + struct mchp_sgpio_priv *priv = gpiochip_get_data(gc); + const struct pinctrl_pin_desc *pin = &priv->desc->pins[gpio]; + int ret; + + if (mchp_sgpio_get_function(gc, gpio)) + ret = sgpio_input_get(priv, gpio); + else + ret = sgpio_output_get(priv, gpio); + + dev_dbg(priv->dev, "get: gpio %d (%s), value %d\n", + gpio, pin->name, ret); + + return ret; +} + +static int mchp_sgpio_get_count(struct device *dev) +{ + struct device_node *np = dev->of_node; + struct of_phandle_args pinspec; + int count, index, ret; + + for (count = 0, index = 0;; index++) { + ret = of_parse_phandle_with_fixed_args(np, "gpio-ranges", 3, + index, &pinspec); + if (ret) + break; + + dev_dbg(dev, "%s: Add %d gpios\n", __func__, pinspec.args[2]); + count += pinspec.args[2]; + } + dev_dbg(dev, "%s: Have %d gpios\n", __func__, count); + return count; +} + +static int mchp_sgpio_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct mchp_sgpio_priv *priv; + int div_clock = 0, ret, port; + u32 val, ngpios; + struct resource *regs; + struct clk *clk; + struct pinctrl_pin_desc *pins; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->dev = dev; + + 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); + + 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->props = of_device_get_match_data(dev); + if (device_property_read_u32(dev, "microchip,sgpio-ports", + &priv->ports)) + priv->ports = 0xFFFFFFFF; + 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; + } + ngpios = mchp_sgpio_get_count(dev); + if (ngpios < 1 || + ngpios > (MSCC_SGPIO_BANK_DEPTH * MSCC_SGPIOS_PER_BANK)) { + dev_err(dev, "Invalid gpio count %d\n", ngpios); + return -EINVAL; + } + + pins = devm_kzalloc(dev, sizeof(*pins)*ngpios, GFP_KERNEL); + if (pins) { + int i; + char *p, *names; + + names = devm_kzalloc(dev, PIN_NAME_LEN*ngpios, GFP_KERNEL); + + if (!names) + return -ENOMEM; + + sgpio_desc.npins = ngpios; + sgpio_desc.pins = pins; + + for (p = names, i = 0; i < ngpios; i++, p += PIN_NAME_LEN) { + snprintf(p, PIN_NAME_LEN, "SGPIO_p%db%d", + i % MSCC_SGPIOS_PER_BANK, + i / MSCC_SGPIOS_PER_BANK); + pins[i].number = i; + pins[i].name = p; + } + } else + return -ENOMEM; + + priv->desc = &sgpio_desc; + priv->pctl = devm_pinctrl_register(&pdev->dev, priv->desc, priv); + if (IS_ERR(priv->pctl)) { + dev_err(&pdev->dev, "Failed to register pinctrl\n"); + return PTR_ERR(priv->pctl); + } + + priv->gpio.label = priv->props->label; + priv->gpio.parent = dev; + priv->gpio.of_node = dev->of_node; + priv->gpio.owner = THIS_MODULE; + priv->gpio.get_direction = mchp_sgpio_get_function; + priv->gpio.direction_input = mchp_sgpio_direction_input; + priv->gpio.direction_output = mchp_sgpio_direction_output; + priv->gpio.get = mchp_sgpio_get_value, + priv->gpio.set = mchp_sgpio_set_value; + priv->gpio.request = gpiochip_generic_request; + priv->gpio.free = gpiochip_generic_free; + priv->gpio.base = -1; + priv->gpio.ngpio = ngpios; + + priv->bitcount = DIV_ROUND_UP(ngpios, MSCC_SGPIOS_PER_BANK); + dev_dbg(dev, "probe: gpios = %d, bit-count = %d\n", + ngpios, priv->bitcount); + + sgpio_clrsetbits(priv, REG_SIO_CONFIG, 0, + MSCC_M_CFG_SIO_PORT_WIDTH(priv), + MSCC_F_CFG_SIO_PORT_WIDTH(priv, priv->bitcount - 1) | + MSCC_M_CFG_SIO_AUTO_REPEAT(priv)); + val = div_clock / priv->clock; + dev_dbg(dev, "probe: div-clock = %d KHz, freq = %d KHz, div = %d\n", + div_clock / 1000, priv->clock / 1000, val); + sgpio_clrsetbits(priv, REG_SIO_CLOCK, 0, + MSCC_M_CLOCK_SIO_CLK_FREQ(priv), + MSCC_F_CLOCK_SIO_CLK_FREQ(priv, val)); + + for (port = 0; port < MSCC_SGPIOS_PER_BANK; port++) + sgpio_writel(priv, 0, REG_PORT_CONFIG, port); + sgpio_writel(priv, priv->ports, REG_PORT_ENABLE, 0); + + ret = devm_gpiochip_add_data(dev, &priv->gpio, priv); + if (ret == 0) + dev_info(dev, "Registered %d GPIOs\n", ngpios); + else + dev_err(dev, "Failed to register: ret %d\n", ret); + return ret; +} + +static const struct of_device_id mchp_sgpio_gpio_of_match[] = { + { + .compatible = "mscc,luton-sgpio", + .data = &props_luton, + }, { + .compatible = "mscc,ocelot-sgpio", + .data = &props_ocelot, + }, { + /* sentinel */ + } +}; + +static struct platform_driver mchp_sgpio_pinctrl_driver = { + .driver = { + .name = "pinctrl-mchp-sgpio", + .of_match_table = mchp_sgpio_gpio_of_match, + .suppress_bind_attrs = true, + }, + .probe = mchp_sgpio_probe, +}; +builtin_platform_driver(mchp_sgpio_pinctrl_driver); From patchwork Wed May 13 14:11:34 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lars Povlsen X-Patchwork-Id: 1289339 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=microchip.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=microchip.com header.i=@microchip.com header.a=rsa-sha256 header.s=mchp header.b=GvvFdOv5; 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IronPort-SDR: GCvGB2O5qzhphdVtjFPJUTIZwX2bvDRmVC5jMlmG08bTSDE/UpKDexka79h8f1+0xeh1otbyAS ghS/6GRQIEWmYOv/ttTRyTxh4LlbTxjfg/O1nb25iLprkvGj1M+29RjIJKU0wpTvahP2fcP798 n69qE+4Vxm1x/zXGZlttuXMmFPYDnsyz48p/qNSvlug9HzZzkh5o7OHIWdZ7gRVoaOG4S9Fm1i J+hXXCqMsuOaO/y72T+Wop97ARfagWMWYzDwbNqi8QHJN1Ln/Pfp8C39B+0TnD9/0dAEgy2VUP 5rQ= X-IronPort-AV: E=Sophos;i="5.73,388,1583218800"; d="scan'208";a="76510168" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa3.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 13 May 2020 07:11:49 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) 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 15.1.1713.5; Wed, 13 May 2020 07:11:48 -0700 Received: from soft-dev15.microsemi.net (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.1713.5 via Frontend Transport; Wed, 13 May 2020 07:11:46 -0700 From: Lars Povlsen To: SoC Team , Linus Walleij CC: Lars Povlsen , Microchip Linux Driver Support , , , , , Alexandre Belloni Subject: [PATCH 3/3] arm64: dts: sparx5: Add SGPIO devices Date: Wed, 13 May 2020 16:11:34 +0200 Message-ID: <20200513141134.25819-4-lars.povlsen@microchip.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200513141134.25819-1-lars.povlsen@microchip.com> References: <20200513141134.25819-1-lars.povlsen@microchip.com> MIME-Version: 1.0 Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org This adds SGPIO devices for the Sparx5 SoC and configures it for the applicable reference boards. Reviewed-by: Alexandre Belloni Signed-off-by: Lars Povlsen --- arch/arm64/boot/dts/microchip/sparx5.dtsi | 52 +++++++++++++++++++ .../boot/dts/microchip/sparx5_pcb125.dts | 5 ++ .../dts/microchip/sparx5_pcb134_board.dtsi | 5 ++ 3 files changed, 62 insertions(+) -- 2.26.2 diff --git a/arch/arm64/boot/dts/microchip/sparx5.dtsi b/arch/arm64/boot/dts/microchip/sparx5.dtsi index 60629861a5157..b4fda5616536c 100644 --- a/arch/arm64/boot/dts/microchip/sparx5.dtsi +++ b/arch/arm64/boot/dts/microchip/sparx5.dtsi @@ -213,6 +213,22 @@ 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"; @@ -243,6 +259,42 @@ emmc_pins: emmc-pins { }; }; + sgpio0: gpio@61101036c { + compatible = "mscc,ocelot-sgpio"; + status = "disabled"; + clocks = <&sys_clk>; + pinctrl-0 = <&sgpio0_pins>; + pinctrl-names = "default"; + reg = <0x6 0x1101036c 0x100>; + gpio-controller; + #gpio-cells = <2>; + gpio-ranges = <&gpio 0 64 64>; + }; + + sgpio1: gpio@611010484 { + compatible = "mscc,ocelot-sgpio"; + status = "disabled"; + clocks = <&sys_clk>; + pinctrl-0 = <&sgpio1_pins>; + pinctrl-names = "default"; + reg = <0x6 0x11010484 0x100>; + gpio-controller; + #gpio-cells = <2>; + gpio-ranges = <&gpio 0 128 64>; + }; + + sgpio2: gpio@61101059c { + compatible = "mscc,ocelot-sgpio"; + status = "disabled"; + clocks = <&sys_clk>; + pinctrl-0 = <&sgpio2_pins>; + pinctrl-names = "default"; + reg = <0x6 0x1101059c 0x100>; + gpio-controller; + #gpio-cells = <2>; + gpio-ranges = <&gpio 0 192 64>; + }; + 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 94c4c3fd5a786..fd4f5b3ddcc49 100644 --- a/arch/arm64/boot/dts/microchip/sparx5_pcb125.dts +++ b/arch/arm64/boot/dts/microchip/sparx5_pcb125.dts @@ -55,6 +55,11 @@ spi-flash@1 { }; }; +&sgpio0 { + status = "okay"; + microchip,sgpio-ports = <0x00FFFFFF>; +}; + &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 628a05d3f57ce..2f781258f8c99 100644 --- a/arch/arm64/boot/dts/microchip/sparx5_pcb134_board.dtsi +++ b/arch/arm64/boot/dts/microchip/sparx5_pcb134_board.dtsi @@ -47,6 +47,11 @@ spi-flash@0 { }; }; +&sgpio0 { + status = "okay"; + microchip,sgpio-ports = <0x00FFFFFF>; +}; + &gpio { i2cmux_pins_i: i2cmux-pins-i { pins = "GPIO_16", "GPIO_17", "GPIO_18", "GPIO_19",