From patchwork Wed Oct 15 03:39:28 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Chang, Rebecca Swee Fun" X-Patchwork-Id: 5083811 Return-Path: X-Original-To: patchwork-ltsi-dev@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 290819F30B for ; Wed, 15 Oct 2014 03:40:08 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3EAC820120 for ; Wed, 15 Oct 2014 03:40:07 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 446602011D for ; Wed, 15 Oct 2014 03:40:06 +0000 (UTC) Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 891EE99F; Wed, 15 Oct 2014 03:39:57 +0000 (UTC) X-Original-To: ltsi-dev@lists.linuxfoundation.org Delivered-To: ltsi-dev@mail.linuxfoundation.org Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 79250B19 for ; Wed, 15 Oct 2014 03:39:56 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by smtp1.linuxfoundation.org (Postfix) with ESMTP id 068B12035D for ; Wed, 15 Oct 2014 03:39:55 +0000 (UTC) Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga102.fm.intel.com with ESMTP; 14 Oct 2014 20:39:55 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,862,1389772800"; d="scan'208";a="400414496" Received: from rebeccas-ilbpg2.png.intel.com ([10.88.227.41]) by FMSMGA003.fm.intel.com with ESMTP; 14 Oct 2014 20:32:42 -0700 From: Chang Rebecca Swee Fun To: LTSI Mailing List Date: Wed, 15 Oct 2014 11:39:28 +0800 Message-Id: <1413344369-15058-5-git-send-email-rebecca.swee.fun.chang@intel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1413344369-15058-1-git-send-email-rebecca.swee.fun.chang@intel.com> References: <1413344369-15058-1-git-send-email-rebecca.swee.fun.chang@intel.com> X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org Cc: Chang Rebecca Swee Fun Subject: [LTSI-dev] [PATCH 4/5] mfd: lpc_sch: Add support for Intel Quark X1000 X-BeenThere: ltsi-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: "A list to discuss patches, development, and other things related to the LTSI project" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: ltsi-dev-bounces@lists.linuxfoundation.org Errors-To: ltsi-dev-bounces@lists.linuxfoundation.org X-Virus-Scanned: ClamAV using ClamSMTP From: Andy Shevchenko Intel Quark X1000 SoC supports IRQ based GPIO. This patch will enable MFD support for Quark X1000 and provide IRQ resources to Quark X1000 GPIO device driver. Signed-off-by: Chang Rebecca Swee Fun Tested-by: Chang Rebecca Swee Fun Signed-off-by: Andy Shevchenko Signed-off-by: Lee Jones (cherry picked from commit ec689a8a8155ce8b966bd5d7737a3916f5e48be3 linux-next) Signed-off-by: Chang Rebecca Swee Fun --- drivers/mfd/lpc_sch.c | 37 +++++++++++++++++++++++++++++++------ 1 file changed, 31 insertions(+), 6 deletions(-) diff --git a/drivers/mfd/lpc_sch.c b/drivers/mfd/lpc_sch.c index 8293a40..be9f9a2 100644 --- a/drivers/mfd/lpc_sch.c +++ b/drivers/mfd/lpc_sch.c @@ -38,6 +38,9 @@ #define GPIO_IO_SIZE 64 #define GPIO_IO_SIZE_CENTERTON 128 +/* Intel Quark X1000 GPIO IRQ Number */ +#define GPIO_IRQ_QUARK_X1000 9 + #define WDTBASE 0x84 #define WDT_IO_SIZE 64 @@ -45,28 +48,37 @@ enum sch_chipsets { LPC_SCH = 0, /* Intel Poulsbo SCH */ LPC_ITC, /* Intel Tunnel Creek */ LPC_CENTERTON, /* Intel Centerton */ + LPC_QUARK_X1000, /* Intel Quark X1000 */ }; struct lpc_sch_info { unsigned int io_size_smbus; unsigned int io_size_gpio; unsigned int io_size_wdt; + int irq_gpio; }; static struct lpc_sch_info sch_chipset_info[] = { [LPC_SCH] = { .io_size_smbus = SMBUS_IO_SIZE, .io_size_gpio = GPIO_IO_SIZE, + .irq_gpio = -1, }, [LPC_ITC] = { .io_size_smbus = SMBUS_IO_SIZE, .io_size_gpio = GPIO_IO_SIZE, .io_size_wdt = WDT_IO_SIZE, + .irq_gpio = -1, }, [LPC_CENTERTON] = { .io_size_smbus = SMBUS_IO_SIZE, .io_size_gpio = GPIO_IO_SIZE_CENTERTON, .io_size_wdt = WDT_IO_SIZE, + .irq_gpio = -1, + }, + [LPC_QUARK_X1000] = { + .io_size_gpio = GPIO_IO_SIZE, + .irq_gpio = GPIO_IRQ_QUARK_X1000, }, }; @@ -74,6 +86,7 @@ static const struct pci_device_id lpc_sch_ids[] = { { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_SCH_LPC), LPC_SCH }, { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_ITC_LPC), LPC_ITC }, { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_CENTERTON_ILB), LPC_CENTERTON }, + { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_QUARK_X1000_ILB), LPC_QUARK_X1000 }, { 0, } }; MODULE_DEVICE_TABLE(pci, lpc_sch_ids); @@ -111,13 +124,13 @@ static int lpc_sch_get_io(struct pci_dev *pdev, int where, const char *name, } static int lpc_sch_populate_cell(struct pci_dev *pdev, int where, - const char *name, int size, int id, - struct mfd_cell *cell) + const char *name, int size, int irq, + int id, struct mfd_cell *cell) { struct resource *res; int ret; - res = devm_kzalloc(&pdev->dev, sizeof(*res), GFP_KERNEL); + res = devm_kcalloc(&pdev->dev, 2, sizeof(*res), GFP_KERNEL); if (!res) return -ENOMEM; @@ -133,6 +146,18 @@ static int lpc_sch_populate_cell(struct pci_dev *pdev, int where, cell->ignore_resource_conflicts = true; cell->id = id; + /* Check if we need to add an IRQ resource */ + if (irq < 0) + return 0; + + res++; + + res->start = irq; + res->end = irq; + res->flags = IORESOURCE_IRQ; + + cell->num_resources++; + return 0; } @@ -144,7 +169,7 @@ static int lpc_sch_probe(struct pci_dev *dev, const struct pci_device_id *id) int ret; ret = lpc_sch_populate_cell(dev, SMBASE, "isch_smbus", - info->io_size_smbus, + info->io_size_smbus, -1, id->device, &lpc_sch_cells[cells]); if (ret < 0) return ret; @@ -152,7 +177,7 @@ static int lpc_sch_probe(struct pci_dev *dev, const struct pci_device_id *id) cells++; ret = lpc_sch_populate_cell(dev, GPIOBASE, "sch_gpio", - info->io_size_gpio, + info->io_size_gpio, info->irq_gpio, id->device, &lpc_sch_cells[cells]); if (ret < 0) return ret; @@ -160,7 +185,7 @@ static int lpc_sch_probe(struct pci_dev *dev, const struct pci_device_id *id) cells++; ret = lpc_sch_populate_cell(dev, WDTBASE, "ie6xx_wdt", - info->io_size_wdt, + info->io_size_wdt, -1, id->device, &lpc_sch_cells[cells]); if (ret < 0) return ret;