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[83.201.132.17]) by smtp.googlemail.com with ESMTPSA id b45sm12919494eda.34.2018.12.28.02.51.15 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 28 Dec 2018 02:51:16 -0800 (PST) From: Loys Ollivier To: devicetree@vger.kernel.org, Johan Hovold Cc: Loys Ollivier , Rob Herring , Mark Rutland , linux-kernel@vger.kernel.org, Kevin Hilman , linux-amlogic@lists.infradead.org Subject: [PATCH 1/4] dt-bindings: Add vendor prefix for "GlobalTop Technology, Inc." Date: Fri, 28 Dec 2018 11:50:32 +0100 Message-Id: <1545994235-8309-2-git-send-email-lollivier@baylibre.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1545994235-8309-1-git-send-email-lollivier@baylibre.com> References: <1545994235-8309-1-git-send-email-lollivier@baylibre.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add globaltop vendor definition. Signed-off-by: Loys Ollivier --- Documentation/devicetree/bindings/vendor-prefixes.txt | 1 + 1 file changed, 1 insertion(+) -- 2.7.4 diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt index 4b1a2a8fcc16..a9214767afa8 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.txt +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt @@ -153,6 +153,7 @@ goodix Shenzhen Huiding Technology Co., Ltd. google Google, Inc. grinn Grinn grmn Garmin Limited +globaltop GlobalTop Technology, Inc. gumstix Gumstix, Inc. gw Gateworks Corporation hannstar HannStar Display Corporation From patchwork Fri Dec 28 10:50:33 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Loys Ollivier X-Patchwork-Id: 154602 Delivered-To: patch@linaro.org Received: by 2002:a2e:299d:0:0:0:0:0 with SMTP id p29-v6csp7887460ljp; Fri, 28 Dec 2018 02:51:26 -0800 (PST) X-Google-Smtp-Source: AFSGD/XPEpYVDv2yOh2JsB5XMDQ4659WnJZB+vFVtMpKSOCcspp2VDpz79KDRgJZs1sHRh1ix722 X-Received: by 2002:a62:d701:: with SMTP id b1mr26988004pfh.34.1545994286822; Fri, 28 Dec 2018 02:51:26 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1545994286; cv=none; d=google.com; s=arc-20160816; b=estCL9N4xUYZVQDaBu4TOI6d4VEZT+Sq1wrsU68szGfce6jcQ7yRTp0N8Aupl9q2d5 jBPKuEA7MfQSr/FLFCRFlGnEq4pdjFS1x6ZtVG1u7bHmKng85WYLQsbj17yiSNUVxUdt hPop7Dfm1ow9bcbFAbduJ4HFXCRmx2i5w13wstsKAsijrLUDSs7K4chWBUsyE9vCAWeH pmiR0I2HmD0OV49hT8loIsywnbdMMjatBg+dgTPXiG3wawkGzOlCKM6Fhpe2xwwOXGWn 9p+bS70jkO8A2ZN4tXIzMbGL6I72LUIIgkasMEfyioWxN2Yhd0VHpSsxtHtRvGKZUwj+ Ihlg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:message-id:date :subject:cc:to:from:dkim-signature; bh=gE62p5/59RTzWzc5sJxmZU4FHrcRfBxyqPDK6YvY16Y=; b=nXWWYe8+JgRJ2AMGAROj8nFfhDkgO2ICliOL5ImPOpt0O5cru5Uy1q8AefOWHuq+7L yDRjvttpfABY+Lj262CTUgaUP4lQ0E58M1VyKyT8G4JPEpD2vTvUICFxoWJ4gAINKyCk C8hycNITx30zQFr5J92kUx3GeknZgmABEtFVMn0DGKsMQONcbQJqvhl1UowolWL+Pgma UsVIMwliAyZkq93IeI0yDmEbOarAvfq0aETo1aNkC5yQ5FRNg0UFxYk45NLrn2MHI8s8 KIiHCqU33HbHrN1ByNf0ARv0W3a97qj48JdpD62OkcGDjDGK5tvkglEiwycy8XX3QTxX Eerw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@baylibre-com.20150623.gappssmtp.com header.s=20150623 header.b=dRlA39fE; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. 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[83.201.132.17]) by smtp.googlemail.com with ESMTPSA id b45sm12919494eda.34.2018.12.28.02.51.20 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 28 Dec 2018 02:51:21 -0800 (PST) From: Loys Ollivier To: devicetree@vger.kernel.org, Johan Hovold Cc: Loys Ollivier , Rob Herring , Mark Rutland , linux-kernel@vger.kernel.org, Kevin Hilman , linux-amlogic@lists.infradead.org Subject: [PATCH 2/4] dt-bindings: gnss: add gtop binding Date: Fri, 28 Dec 2018 11:50:33 +0100 Message-Id: <1545994235-8309-3-git-send-email-lollivier@baylibre.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1545994235-8309-1-git-send-email-lollivier@baylibre.com> References: <1545994235-8309-1-git-send-email-lollivier@baylibre.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add binding for GlobalTop GNSS receivers. Signed-off-by: Loys Ollivier --- Documentation/devicetree/bindings/gnss/gtop.txt | 33 +++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 Documentation/devicetree/bindings/gnss/gtop.txt -- 2.7.4 diff --git a/Documentation/devicetree/bindings/gnss/gtop.txt b/Documentation/devicetree/bindings/gnss/gtop.txt new file mode 100644 index 000000000000..24c86703aa46 --- /dev/null +++ b/Documentation/devicetree/bindings/gnss/gtop.txt @@ -0,0 +1,33 @@ +GlobalTop GNSS Receiver DT binding + +The GlobalTop GNSS receivers uses UART interfaces. + +Please see Documentation/devicetree/bindings/gnss/gnss.txt for generic +properties. + +Required properties: + +- compatible : Must be + + "globaltop,pa6h" + +- vcc-supply : Main voltage regulator + +Optional properties: + +- timepulse-gpios : Time pulse GPIO +- v-bckp-supply : Backup voltage regulator + +Example: + +&uart_A { + status = "okay"; + pinctrl-0 = <&uart_a_pins>; + pinctrl-names = "default"; + + gnss { + compatible = "globaltop,pa6h"; + vcc-supply = <&vcc_3v3>; + current-speed = <9600>; + }; +}; From patchwork Fri Dec 28 10:50:35 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Loys Ollivier X-Patchwork-Id: 154604 Delivered-To: patch@linaro.org Received: by 2002:a2e:299d:0:0:0:0:0 with SMTP id p29-v6csp7887581ljp; Fri, 28 Dec 2018 02:51:36 -0800 (PST) X-Google-Smtp-Source: ALg8bN7BCHVMhc9Q9kAa17E74ro4IZRpwLHD/YZYfiju8iEB2St4qyvFydqWQ5TDOhQcZ4pTn8MM X-Received: by 2002:a17:902:6a4:: with SMTP id 33mr26460907plh.99.1545994296238; Fri, 28 Dec 2018 02:51:36 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1545994296; cv=none; d=google.com; s=arc-20160816; b=qytMIHpNGp9gjLltV4GyFP/FBP7pp5pi4Zqt31p0uQAzY3EtxHQhkNxFIvUZp7N7rr 5TP8KZ6OzoeMJGmFZSd/AWBz3Nni5SfFL0cX49cikRCEDIoeYAIawAQrMgJOY2Gqi/of 8Pg40f+CCzadis8UuKSMLuU1NHfgCodZma6AFX3hwlAGt6b6CaPNdUQKjIBtcLR9CL1X U5kbaVH6cO1PrT1Brgn4h1deOCU8y9gHy+Y4fGR0AHW5/oXwX2Jf3jD7cRI0tyrMlwgz hf2s+j6Mzf4VBjfISZOoIUjos8JO/mbSCqhzBS2Fc6Gr7y1cBiDF7xeaXVDN1zs0QhbS LEjA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:message-id:date :subject:cc:to:from:dkim-signature; bh=pN+0H3y7M98gFOz3pfkSQa2FcPvqO1nl4jQ3jTi1QzQ=; b=U+dHW49YMTPXtVpuWinXdAXAkv56pGVGt2oCBOE+imFXu04dcASd7IORIJDuGitF1s wjzpyljYh4/2mu355YTcbcn+78VYNmQIF2tebcnJktDZ+nJVRpjOn0ZTJqphF0JBAAAP /v3JN2F8rYRao1qkgps8r4HoW4+6DzqR/CrqOz/QVtyYEg/p1DaAWo3o3gedp3OEgl+3 9JnEOegP8pWyYB4za9n/Ezqg0YxgrmWEb9XzdS0aq1EpdK/r9E05WSzCtkA28rhKHSzE 8W2/syiGN6fxHtQ4I4JgHn3hjhV3xQYlVGB7z2df6qDP2sAz1dOGtRbFN3mru3BWXXzL Du2g== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@baylibre-com.20150623.gappssmtp.com header.s=20150623 header.b=aFwiDCyS; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. 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[83.201.132.17]) by smtp.googlemail.com with ESMTPSA id b45sm12919494eda.34.2018.12.28.02.51.25 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 28 Dec 2018 02:51:26 -0800 (PST) From: Loys Ollivier To: devicetree@vger.kernel.org, Johan Hovold Cc: Loys Ollivier , Rob Herring , Mark Rutland , linux-kernel@vger.kernel.org, Kevin Hilman , linux-amlogic@lists.infradead.org Subject: [PATCH 4/4] gnss: add driver for globaltop receivers Date: Fri, 28 Dec 2018 11:50:35 +0100 Message-Id: <1545994235-8309-5-git-send-email-lollivier@baylibre.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1545994235-8309-1-git-send-email-lollivier@baylibre.com> References: <1545994235-8309-1-git-send-email-lollivier@baylibre.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add driver for serial-connected GlobalTop GNSS receivers. These devices typically boot transmitting vendor specific NMEA output sequences. The serial port bit rate is read from the device tree "current-speed". Note that the driver uses the generic GNSS serial implementation and therefore essentially only manages power abstracted into three power states: ACTIVE, STANDBY, and OFF. For globaltop receivers with a main supply and no enable-gpios, this simply means that the main supply is disabled in STANDBY and OFF (the optional backup supply is kept enabled while the driver is bound). Note that the timepulse-support is left unimplemented. Signed-off-by: Loys Ollivier --- drivers/gnss/Kconfig | 13 +++++ drivers/gnss/Makefile | 3 + drivers/gnss/core.c | 1 + drivers/gnss/gtop.c | 152 ++++++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 169 insertions(+) create mode 100644 drivers/gnss/gtop.c -- 2.7.4 diff --git a/drivers/gnss/Kconfig b/drivers/gnss/Kconfig index 6abc88514512..c93ad134656b 100644 --- a/drivers/gnss/Kconfig +++ b/drivers/gnss/Kconfig @@ -40,4 +40,17 @@ config GNSS_UBX_SERIAL If unsure, say N. +config GNSS_GTOP_SERIAL + tristate "GlobalTop GNSS receiver support" + depends on SERIAL_DEV_BUS + select GNSS_SERIAL + help + Say Y here if you have a GlobalTop GNSS receiver which uses a serial + interface. + + To compile this driver as a module, choose M here: the module will + be called gnss-gtop. + + If unsure, say N. + endif # GNSS diff --git a/drivers/gnss/Makefile b/drivers/gnss/Makefile index 5cf0ebe0330a..becc45f24b8b 100644 --- a/drivers/gnss/Makefile +++ b/drivers/gnss/Makefile @@ -14,3 +14,6 @@ gnss-sirf-y := sirf.o obj-$(CONFIG_GNSS_UBX_SERIAL) += gnss-ubx.o gnss-ubx-y := ubx.o + +obj-$(CONFIG_GNSS_GTOP_SERIAL) += gnss-gtop.o +gnss-gtop-y := gtop.o diff --git a/drivers/gnss/core.c b/drivers/gnss/core.c index 4291a0dd22aa..0b5cd82b1fb7 100644 --- a/drivers/gnss/core.c +++ b/drivers/gnss/core.c @@ -334,6 +334,7 @@ static const char * const gnss_type_names[GNSS_TYPE_COUNT] = { [GNSS_TYPE_NMEA] = "NMEA", [GNSS_TYPE_SIRF] = "SiRF", [GNSS_TYPE_UBX] = "UBX", + [GNSS_TYPE_GTOP] = "GTOP", }; static const char *gnss_type_name(struct gnss_device *gdev) diff --git a/drivers/gnss/gtop.c b/drivers/gnss/gtop.c new file mode 100644 index 000000000000..6fa7b425d711 --- /dev/null +++ b/drivers/gnss/gtop.c @@ -0,0 +1,152 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * GlobalTop GNSS receiver driver + * + * Copyright (C) 2018 Loys Ollivier + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "serial.h" + +struct gtop_data { + struct regulator *v_bckp; + struct regulator *vcc; +}; + +static int gtop_set_active(struct gnss_serial *gserial) +{ + struct gtop_data *data = gnss_serial_get_drvdata(gserial); + int ret; + + ret = regulator_enable(data->vcc); + if (ret) + return ret; + + return 0; +} + +static int gtop_set_standby(struct gnss_serial *gserial) +{ + struct gtop_data *data = gnss_serial_get_drvdata(gserial); + int ret; + + ret = regulator_disable(data->vcc); + if (ret) + return ret; + + return 0; +} + +static int gtop_set_power(struct gnss_serial *gserial, + enum gnss_serial_pm_state state) +{ + switch (state) { + case GNSS_SERIAL_ACTIVE: + return gtop_set_active(gserial); + case GNSS_SERIAL_OFF: + case GNSS_SERIAL_STANDBY: + return gtop_set_standby(gserial); + } + + return -EINVAL; +} + +static const struct gnss_serial_ops gtop_gserial_ops = { + .set_power = gtop_set_power, +}; + +static int gtop_probe(struct serdev_device *serdev) +{ + struct gnss_serial *gserial; + struct gtop_data *data; + int ret; + + gserial = gnss_serial_allocate(serdev, sizeof(*data)); + if (IS_ERR(gserial)) { + ret = PTR_ERR(gserial); + return ret; + } + + gserial->ops = >op_gserial_ops; + + gserial->gdev->type = GNSS_TYPE_GTOP; + + data = gnss_serial_get_drvdata(gserial); + + data->vcc = devm_regulator_get(&serdev->dev, "vcc"); + if (IS_ERR(data->vcc)) { + ret = PTR_ERR(data->vcc); + goto err_free_gserial; + } + + data->v_bckp = devm_regulator_get_optional(&serdev->dev, "v-bckp"); + if (IS_ERR(data->v_bckp)) { + ret = PTR_ERR(data->v_bckp); + if (ret == -ENODEV) + data->v_bckp = NULL; + else + goto err_free_gserial; + } + + if (data->v_bckp) { + ret = regulator_enable(data->v_bckp); + if (ret) + goto err_free_gserial; + } + + ret = gnss_serial_register(gserial); + if (ret) + goto err_disable_v_bckp; + + return 0; + +err_disable_v_bckp: + if (data->v_bckp) + regulator_disable(data->v_bckp); +err_free_gserial: + gnss_serial_free(gserial); + + return ret; +} + +static void gtop_remove(struct serdev_device *serdev) +{ + struct gnss_serial *gserial = serdev_device_get_drvdata(serdev); + struct gtop_data *data = gnss_serial_get_drvdata(gserial); + + gnss_serial_deregister(gserial); + if (data->v_bckp) + regulator_disable(data->v_bckp); + gnss_serial_free(gserial); +}; + +#ifdef CONFIG_OF +static const struct of_device_id gtop_of_match[] = { + { .compatible = "globaltop,pa6h" }, + {}, +}; +MODULE_DEVICE_TABLE(of, gtop_of_match); +#endif + +static struct serdev_device_driver gtop_driver = { + .driver = { + .name = "gnss-gtop", + .of_match_table = of_match_ptr(gtop_of_match), + .pm = &gnss_serial_pm_ops, + }, + .probe = gtop_probe, + .remove = gtop_remove, +}; +module_serdev_device_driver(gtop_driver); + +MODULE_AUTHOR("Loys Ollivier "); +MODULE_DESCRIPTION("GlobalTop GNSS receiver driver"); +MODULE_LICENSE("GPL v2");