From patchwork Mon Apr 8 14:20:58 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Bogendoerfer X-Patchwork-Id: 10889575 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6C4A317E0 for ; Mon, 8 Apr 2019 14:22:04 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5440B28671 for ; Mon, 8 Apr 2019 14:22:04 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4811D286E5; Mon, 8 Apr 2019 14:22:04 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 969FD28671 for ; Mon, 8 Apr 2019 14:22:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727208AbfDHOVc (ORCPT ); Mon, 8 Apr 2019 10:21:32 -0400 Received: from mx2.suse.de ([195.135.220.15]:33940 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727159AbfDHOVa (ORCPT ); Mon, 8 Apr 2019 10:21:30 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id F3192B015; Mon, 8 Apr 2019 14:21:27 +0000 (UTC) From: Thomas Bogendoerfer To: Ralf Baechle , Paul Burton , James Hogan , Dmitry Torokhov , Lee Jones , "David S. Miller" , Alessandro Zummo , Alexandre Belloni , Greg Kroah-Hartman , Jiri Slaby , linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, netdev@vger.kernel.org, linux-rtc@vger.kernel.org, linux-serial@vger.kernel.org Subject: [PATCH 6/6] Input: add IOC3 serio driver Date: Mon, 8 Apr 2019 16:20:58 +0200 Message-Id: <20190408142100.27618-7-tbogendoerfer@suse.de> X-Mailer: git-send-email 2.13.7 In-Reply-To: <20190408142100.27618-1-tbogendoerfer@suse.de> References: <20190408142100.27618-1-tbogendoerfer@suse.de> Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds a platform driver for supporting keyboard and mouse interface of SGI IOC3 chips. Signed-off-by: Thomas Bogendoerfer --- drivers/input/serio/Kconfig | 12 +++ drivers/input/serio/Makefile | 1 + drivers/input/serio/ioc3kbd.c | 183 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 196 insertions(+) create mode 100644 drivers/input/serio/ioc3kbd.c diff --git a/drivers/input/serio/Kconfig b/drivers/input/serio/Kconfig index c9c7224d5ae0..ceb89d8b785d 100644 --- a/drivers/input/serio/Kconfig +++ b/drivers/input/serio/Kconfig @@ -164,6 +164,18 @@ config SERIO_MACEPS2 To compile this driver as a module, choose M here: the module will be called maceps2. +config SERIO_SGI_IOC3 + tristate "SGI IOC3 PS/2 controller" + depends on SGI_MFD_IOC3 + help + Say Y here if you have an SGI Onyx2, SGI Octane or IOC3 PCI card + and you want to attach and use a keyboard, mouse, or both. + + Do not use on an SGI Origin 2000, as the IO6 board in those + systems lacks the necessary PS/2 ports. You will need to add + an IOC3 PCI card (CADduo) via a PCI Shoehorn XIO card or the + PCI Cardcage (shoebox) first. + config SERIO_LIBPS2 tristate "PS/2 driver library" depends on SERIO_I8042 || SERIO_I8042=n diff --git a/drivers/input/serio/Makefile b/drivers/input/serio/Makefile index 67950a5ccb3f..6d97bad7b844 100644 --- a/drivers/input/serio/Makefile +++ b/drivers/input/serio/Makefile @@ -20,6 +20,7 @@ obj-$(CONFIG_HIL_MLC) += hp_sdc_mlc.o hil_mlc.o obj-$(CONFIG_SERIO_PCIPS2) += pcips2.o obj-$(CONFIG_SERIO_PS2MULT) += ps2mult.o obj-$(CONFIG_SERIO_MACEPS2) += maceps2.o +obj-$(CONFIG_SERIO_SGI_IOC3) += ioc3kbd.o obj-$(CONFIG_SERIO_LIBPS2) += libps2.o obj-$(CONFIG_SERIO_RAW) += serio_raw.o obj-$(CONFIG_SERIO_AMS_DELTA) += ams_delta_serio.o diff --git a/drivers/input/serio/ioc3kbd.c b/drivers/input/serio/ioc3kbd.c new file mode 100644 index 000000000000..8ff46a9f3d98 --- /dev/null +++ b/drivers/input/serio/ioc3kbd.c @@ -0,0 +1,183 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * SGI IOC3 PS/2 controller driver for linux + * + * Copyright (C) 2019 Thomas Bogendoerfer + * + * Based on code Copyright (C) 2005 Stanislaw Skowronek + * Copyright (C) 2009 Johannes Dickgreber + */ + +#include +#include +#include +#include +#include +#include + +#include + +struct ioc3kbd_data { + struct ioc3_serioregs __iomem *regs; + struct serio *kbd, *aux; +}; + +static int ioc3kbd_write(struct serio *dev, u8 val) +{ + struct ioc3kbd_data *d = (struct ioc3kbd_data *)(dev->port_data); + unsigned long timeout = 0; + u32 mask; + + mask = (dev == d->aux) ? KM_CSR_M_WRT_PEND : KM_CSR_K_WRT_PEND; + while ((readl(&d->regs->km_csr) & mask) && (timeout < 1000)) { + udelay(100); + timeout++; + } + + if (dev == d->aux) + writel(((u32)val) & 0x000000ff, &d->regs->m_wd); + else + writel(((u32)val) & 0x000000ff, &d->regs->k_wd); + + if (timeout >= 1000) + return -1; + return 0; +} + +static irqreturn_t ioc3kbd_intr(int itq, void *dev_id) +{ + struct ioc3kbd_data *d = dev_id; + u32 data_k, data_m; + + data_k = readl(&d->regs->k_rd); + data_m = readl(&d->regs->m_rd); + + if (data_k & KM_RD_VALID_0) + serio_interrupt(d->kbd, + (data_k >> KM_RD_DATA_0_SHIFT) & 0xff, 0); + if (data_k & KM_RD_VALID_1) + serio_interrupt(d->kbd, + (data_k >> KM_RD_DATA_1_SHIFT) & 0xff, 0); + if (data_k & KM_RD_VALID_2) + serio_interrupt(d->kbd, + (data_k >> KM_RD_DATA_2_SHIFT) & 0xff, 0); + if (data_m & KM_RD_VALID_0) + serio_interrupt(d->aux, + (data_m >> KM_RD_DATA_0_SHIFT) & 0xff, 0); + if (data_m & KM_RD_VALID_1) + serio_interrupt(d->aux, + (data_m >> KM_RD_DATA_1_SHIFT) & 0xff, 0); + if (data_m & KM_RD_VALID_2) + serio_interrupt(d->aux, + (data_m >> KM_RD_DATA_2_SHIFT) & 0xff, 0); + + return 0; +} + +static int ioc3kbd_open(struct serio *dev) +{ + return 0; +} + +static void ioc3kbd_close(struct serio *dev) +{ + /* Empty */ +} + +static struct ioc3kbd_data *ioc3kbd_alloc_port(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct ioc3_serioregs __iomem *regs; + struct ioc3kbd_data *d; + struct serio *sk, *sa; + struct resource *mem; + int irq; + + mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!mem) + return NULL; + + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return NULL; + + regs = devm_ioremap(&pdev->dev, mem->start, resource_size(mem)); + if (!regs) + return NULL; + + sk = devm_kzalloc(dev, sizeof(struct serio), GFP_KERNEL); + if (!sk) + return NULL; + + sa = devm_kzalloc(dev, sizeof(struct serio), GFP_KERNEL); + if (!sa) + return NULL; + + d = devm_kzalloc(dev, sizeof(struct ioc3kbd_data), + GFP_KERNEL); + if (!d) + return NULL; + + if (request_irq(irq, ioc3kbd_intr, IRQF_SHARED, "ioc3-kbd", d)) + return NULL; + + sk->id.type = SERIO_8042; + sk->write = ioc3kbd_write; + sk->open = ioc3kbd_open; + sk->close = ioc3kbd_close; + snprintf(sk->name, sizeof(sk->name), "IOC3 keyboard %d", pdev->id); + snprintf(sk->phys, sizeof(sk->phys), "ioc3/serio%dkbd", pdev->id); + sk->port_data = d; + sk->dev.parent = &pdev->dev; + + sa->id.type = SERIO_8042; + sa->write = ioc3kbd_write; + sa->open = ioc3kbd_open; + sa->close = ioc3kbd_close; + snprintf(sa->name, sizeof(sa->name), "IOC3 auxiliary %d", pdev->id); + snprintf(sa->phys, sizeof(sa->phys), "ioc3/serio%daux", pdev->id); + sa->port_data = d; + sa->dev.parent = dev; + + d->regs = regs; + d->kbd = sk; + d->aux = sa; + return d; +} + +static int ioc3kbd_probe(struct platform_device *pdev) +{ + struct ioc3kbd_data *d; + + d = ioc3kbd_alloc_port(pdev); + if (!d) + return -ENOMEM; + + platform_set_drvdata(pdev, d); + serio_register_port(d->kbd); + serio_register_port(d->aux); + + return 0; +} + +static int ioc3kbd_remove(struct platform_device *pdev) +{ + struct ioc3kbd_data *d = platform_get_drvdata(pdev); + + serio_unregister_port(d->kbd); + serio_unregister_port(d->aux); + return 0; +} + +static struct platform_driver ioc3kbd_driver = { + .probe = ioc3kbd_probe, + .remove = ioc3kbd_remove, + .driver = { + .name = "ioc3-kbd", + }, +}; +module_platform_driver(ioc3kbd_driver); + +MODULE_AUTHOR("Stanislaw Skowronek "); +MODULE_DESCRIPTION("SGI IOC3 serio driver"); +MODULE_LICENSE("GPL");