From owner-svn-src-all@freebsd.org Tue Jul 2 08:47:19 2019 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 996EA15CCCB1; Tue, 2 Jul 2019 08:47:19 +0000 (UTC) (envelope-from ganbold@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 3F3DE74A98; Tue, 2 Jul 2019 08:47:19 +0000 (UTC) (envelope-from ganbold@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 1515921EB8; Tue, 2 Jul 2019 08:47:19 +0000 (UTC) (envelope-from ganbold@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x628lILR066142; Tue, 2 Jul 2019 08:47:18 GMT (envelope-from ganbold@FreeBSD.org) Received: (from ganbold@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x628lIAW066141; Tue, 2 Jul 2019 08:47:18 GMT (envelope-from ganbold@FreeBSD.org) Message-Id: <201907020847.x628lIAW066141@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: ganbold set sender to ganbold@FreeBSD.org using -f From: Ganbold Tsagaankhuu Date: Tue, 2 Jul 2019 08:47:18 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r349596 - head/sys/dev/fdt X-SVN-Group: head X-SVN-Commit-Author: ganbold X-SVN-Commit-Paths: head/sys/dev/fdt X-SVN-Commit-Revision: 349596 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 3F3DE74A98 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.98 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.998,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; NEURAL_HAM_SHORT(-0.99)[-0.986,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US] X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 02 Jul 2019 08:47:20 -0000 Author: ganbold Date: Tue Jul 2 08:47:18 2019 New Revision: 349596 URL: https://svnweb.freebsd.org/changeset/base/349596 Log: Extend simple_mfd driver to expose a syscon interface if that node is also compatible with syscon. For instance, Rockchip RK3399's GRF (General Register Files) is compatible with simple-mfd as well as syscon and has devices like usb2-phy, emmc-phy and pcie-phy etc. under it. Reviewed by: manu Added: head/sys/dev/fdt/simple_mfd.h (contents, props changed) Modified: head/sys/dev/fdt/simple_mfd.c Modified: head/sys/dev/fdt/simple_mfd.c ============================================================================== --- head/sys/dev/fdt/simple_mfd.c Tue Jul 2 07:47:11 2019 (r349595) +++ head/sys/dev/fdt/simple_mfd.c Tue Jul 2 08:47:18 2019 (r349596) @@ -33,7 +33,10 @@ __FBSDID("$FreeBSD$"); #include #include #include +#include #include +#include +#include #include @@ -42,15 +45,88 @@ __FBSDID("$FreeBSD$"); #include #include -struct simple_mfd_softc { - struct simplebus_softc sc; -}; +#include device_t simple_mfd_add_device(device_t dev, phandle_t node, u_int order, const char *name, int unit, struct simplebus_devinfo *di); struct simplebus_devinfo *simple_mfd_setup_dinfo(device_t dev, phandle_t node, struct simplebus_devinfo *di); +#include "syscon_if.h" +#include + +MALLOC_DECLARE(M_SYSCON); + +static uint32_t simple_mfd_syscon_read_4(struct syscon *syscon, bus_size_t offset); +static int simple_mfd_syscon_write_4(struct syscon *syscon, bus_size_t offset, + uint32_t val); +static int simple_mfd_syscon_modify_4(struct syscon *syscon, bus_size_t offset, + uint32_t clear_bits, uint32_t set_bits); + +#define SYSCON_LOCK(_sc) mtx_lock_spin(&(_sc)->mtx) +#define SYSCON_UNLOCK(_sc) mtx_unlock_spin(&(_sc)->mtx) +#define SYSCON_LOCK_INIT(_sc) mtx_init(&(_sc)->mtx, \ + device_get_nameunit((_sc)->dev), "syscon", MTX_SPIN) +#define SYSCON_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->mtx); +#define SYSCON_ASSERT_LOCKED(_sc) mtx_assert(&(_sc)->mtx, MA_OWNED); +#define SYSCON_ASSERT_UNLOCKED(_sc) mtx_assert(&(_sc)->mtx, MA_NOTOWNED); + +static syscon_method_t simple_mfd_syscon_methods[] = { + SYSCONMETHOD(syscon_read_4, simple_mfd_syscon_read_4), + SYSCONMETHOD(syscon_write_4, simple_mfd_syscon_write_4), + SYSCONMETHOD(syscon_modify_4, simple_mfd_syscon_modify_4), + + SYSCONMETHOD_END +}; +DEFINE_CLASS_1(simple_mfd_syscon, simple_mfd_syscon_class, + simple_mfd_syscon_methods, 0, syscon_class); + +static uint32_t +simple_mfd_syscon_read_4(struct syscon *syscon, bus_size_t offset) +{ + struct simple_mfd_softc *sc; + uint32_t val; + + sc = device_get_softc(syscon->pdev); + + SYSCON_LOCK(sc); + val = bus_read_4(sc->mem_res, offset); + SYSCON_UNLOCK(sc); + return (val); +} + static int +simple_mfd_syscon_write_4(struct syscon *syscon, bus_size_t offset, + uint32_t val) +{ + struct simple_mfd_softc *sc; + + sc = device_get_softc(syscon->pdev); + + SYSCON_LOCK(sc); + bus_write_4(sc->mem_res, offset, val); + SYSCON_UNLOCK(sc); + return (0); +} + +static int +simple_mfd_syscon_modify_4(struct syscon *syscon, bus_size_t offset, + uint32_t clear_bits, uint32_t set_bits) +{ + struct simple_mfd_softc *sc; + uint32_t val; + + sc = device_get_softc(syscon->pdev); + + SYSCON_LOCK(sc); + val = bus_read_4(sc->mem_res, offset); + val &= ~clear_bits; + val |= set_bits; + bus_write_4(sc->mem_res, offset, val); + SYSCON_UNLOCK(sc); + return (0); +} + +static int simple_mfd_probe(device_t dev) { @@ -70,10 +146,14 @@ simple_mfd_attach(device_t dev) struct simple_mfd_softc *sc; phandle_t node, child; device_t cdev; + int rid; sc = device_get_softc(dev); node = ofw_bus_get_node(dev); + sc->dev = dev; + rid = 0; + /* Parse address-cells and size-cells from the parent node as a fallback */ if (OF_getencprop(node, "#address-cells", &sc->sc.acells, sizeof(sc->sc.acells)) == -1) { @@ -105,9 +185,48 @@ simple_mfd_attach(device_t dev) device_probe_and_attach(cdev); } + if (ofw_bus_is_compatible(dev, "syscon")) { + sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, + RF_ACTIVE); + if (sc->mem_res == NULL) { + device_printf(dev, + "Cannot allocate memory resource\n"); + return (ENXIO); + } + + SYSCON_LOCK_INIT(sc); + sc->syscon = syscon_create_ofw_node(dev, + &simple_mfd_syscon_class, ofw_bus_get_node(dev)); + if (sc->syscon == NULL) { + device_printf(dev, + "Failed to create/register syscon\n"); + return (ENXIO); + } + } return (bus_generic_attach(dev)); } +static int +simple_mfd_detach(device_t dev) +{ + struct simple_mfd_softc *sc; + + sc = device_get_softc(dev); + if (ofw_bus_is_compatible(dev, "syscon")) { + if (sc->syscon != NULL) { + syscon_unregister(sc->syscon); + free(sc->syscon, M_SYSCON); + } + + SYSCON_LOCK_DESTROY(sc); + + if (sc->mem_res != NULL) + bus_release_resource(dev, SYS_RES_MEMORY, 0, + sc->mem_res); + } + return (0); +} + struct simplebus_devinfo * simple_mfd_setup_dinfo(device_t dev, phandle_t node, struct simplebus_devinfo *di) @@ -162,6 +281,7 @@ static device_method_t simple_mfd_methods[] = { /* Device interface */ DEVMETHOD(device_probe, simple_mfd_probe), DEVMETHOD(device_attach, simple_mfd_attach), + DEVMETHOD(device_detach, simple_mfd_detach), DEVMETHOD_END }; Added: head/sys/dev/fdt/simple_mfd.h ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/dev/fdt/simple_mfd.h Tue Jul 2 08:47:18 2019 (r349596) @@ -0,0 +1,44 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause-FreeBSD + * + * Copyright (c) 2019 Ganbold Tsagaankhuu + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef DEV_SIMPLE_MFD_H +#define DEV_SIMPLE_MFD_H + +#include + +struct simple_mfd_softc { + struct simplebus_softc sc; + device_t dev; + struct syscon *syscon; + struct resource *mem_res; + struct mtx mtx; +}; + +DECLARE_CLASS(simple_mfd_driver); + +#endif /* DEV_SIMPLE_MFD_H */