From patchwork Wed Jan 15 13:25:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bin Liu X-Patchwork-Id: 11334457 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 00EB314B4 for ; Wed, 15 Jan 2020 13:25:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D3C7820728 for ; Wed, 15 Jan 2020 13:25:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="H265pzIc" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729080AbgAONZ5 (ORCPT ); Wed, 15 Jan 2020 08:25:57 -0500 Received: from lelv0142.ext.ti.com ([198.47.23.249]:53866 "EHLO lelv0142.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729058AbgAONZv (ORCPT ); Wed, 15 Jan 2020 08:25:51 -0500 Received: from fllv0035.itg.ti.com ([10.64.41.0]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id 00FDPoJX073262; 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Wed, 15 Jan 2020 07:25:49 -0600 Received: from uda0271908.dal.design.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id 00FDPm3J066537; Wed, 15 Jan 2020 07:25:49 -0600 From: Bin Liu To: Greg Kroah-Hartman CC: , Bin Liu Subject: [PATCH 21/25] usb: musb: Add noirq type of dma create interface Date: Wed, 15 Jan 2020 07:25:43 -0600 Message-ID: <20200115132547.364-22-b-liu@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200115132547.364-1-b-liu@ti.com> References: <20200115132547.364-1-b-liu@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org From: Min Guo Add noirq type of dma create interface for platform which do not have dedicated DMA interrupt line, move musbhsdma macro definition to musb_dma.h Signed-off-by: Min Guo Signed-off-by: Bin Liu --- drivers/usb/musb/musb_dma.h | 9 ++++++ drivers/usb/musb/musbhsdma.c | 54 ++++++++++++++++++++++++------------ 2 files changed, 46 insertions(+), 17 deletions(-) diff --git a/drivers/usb/musb/musb_dma.h b/drivers/usb/musb/musb_dma.h index 8f60271c0a9d..4b4d8dc5d3f2 100644 --- a/drivers/usb/musb/musb_dma.h +++ b/drivers/usb/musb/musb_dma.h @@ -35,6 +35,12 @@ struct musb_hw_ep; * whether shared with the Inventra core or separate. */ +#define MUSB_HSDMA_BASE 0x200 +#define MUSB_HSDMA_INTR (MUSB_HSDMA_BASE + 0) +#define MUSB_HSDMA_CONTROL 0x4 +#define MUSB_HSDMA_ADDRESS 0x8 +#define MUSB_HSDMA_COUNT 0xc + #define DMA_ADDR_INVALID (~(dma_addr_t)0) #ifdef CONFIG_MUSB_PIO_ONLY @@ -191,6 +197,9 @@ extern void (*musb_dma_controller_destroy)(struct dma_controller *); extern struct dma_controller * musbhs_dma_controller_create(struct musb *musb, void __iomem *base); extern void musbhs_dma_controller_destroy(struct dma_controller *c); +extern struct dma_controller * +musbhs_dma_controller_create_noirq(struct musb *musb, void __iomem *base); +extern irqreturn_t dma_controller_irq(int irq, void *private_data); extern struct dma_controller * tusb_dma_controller_create(struct musb *musb, void __iomem *base); diff --git a/drivers/usb/musb/musbhsdma.c b/drivers/usb/musb/musbhsdma.c index 2d3751d885b4..bcc0fbf42ba8 100644 --- a/drivers/usb/musb/musbhsdma.c +++ b/drivers/usb/musb/musbhsdma.c @@ -10,12 +10,7 @@ #include #include #include "musb_core.h" - -#define MUSB_HSDMA_BASE 0x200 -#define MUSB_HSDMA_INTR (MUSB_HSDMA_BASE + 0) -#define MUSB_HSDMA_CONTROL 0x4 -#define MUSB_HSDMA_ADDRESS 0x8 -#define MUSB_HSDMA_COUNT 0xc +#include "musb_dma.h" #define MUSB_HSDMA_CHANNEL_OFFSET(_bchannel, _offset) \ (MUSB_HSDMA_BASE + (_bchannel << 4) + _offset) @@ -268,7 +263,7 @@ static int dma_channel_abort(struct dma_channel *channel) return 0; } -static irqreturn_t dma_controller_irq(int irq, void *private_data) +irqreturn_t dma_controller_irq(int irq, void *private_data) { struct musb_dma_controller *controller = private_data; struct musb *musb = controller->private_data; @@ -383,6 +378,7 @@ static irqreturn_t dma_controller_irq(int irq, void *private_data) spin_unlock_irqrestore(&musb->lock, flags); return retval; } +EXPORT_SYMBOL_GPL(dma_controller_irq); void musbhs_dma_controller_destroy(struct dma_controller *c) { @@ -398,18 +394,10 @@ void musbhs_dma_controller_destroy(struct dma_controller *c) } EXPORT_SYMBOL_GPL(musbhs_dma_controller_destroy); -struct dma_controller *musbhs_dma_controller_create(struct musb *musb, - void __iomem *base) +static struct musb_dma_controller * +dma_controller_alloc(struct musb *musb, void __iomem *base) { struct musb_dma_controller *controller; - struct device *dev = musb->controller; - struct platform_device *pdev = to_platform_device(dev); - int irq = platform_get_irq_byname(pdev, "dma"); - - if (irq <= 0) { - dev_err(dev, "No DMA interrupt line!\n"); - return NULL; - } controller = kzalloc(sizeof(*controller), GFP_KERNEL); if (!controller) @@ -423,6 +411,25 @@ struct dma_controller *musbhs_dma_controller_create(struct musb *musb, controller->controller.channel_release = dma_channel_release; controller->controller.channel_program = dma_channel_program; controller->controller.channel_abort = dma_channel_abort; + return controller; +} + +struct dma_controller * +musbhs_dma_controller_create(struct musb *musb, void __iomem *base) +{ + struct musb_dma_controller *controller; + struct device *dev = musb->controller; + struct platform_device *pdev = to_platform_device(dev); + int irq = platform_get_irq_byname(pdev, "dma"); + + if (irq <= 0) { + dev_err(dev, "No DMA interrupt line!\n"); + return NULL; + } + + controller = dma_controller_alloc(musb, base); + if (!controller) + return NULL; if (request_irq(irq, dma_controller_irq, 0, dev_name(musb->controller), controller)) { @@ -437,3 +444,16 @@ struct dma_controller *musbhs_dma_controller_create(struct musb *musb, return &controller->controller; } EXPORT_SYMBOL_GPL(musbhs_dma_controller_create); + +struct dma_controller * +musbhs_dma_controller_create_noirq(struct musb *musb, void __iomem *base) +{ + struct musb_dma_controller *controller; + + controller = dma_controller_alloc(musb, base); + if (!controller) + return NULL; + + return &controller->controller; +} +EXPORT_SYMBOL_GPL(musbhs_dma_controller_create_noirq);