Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757645Ab3CTKxr (ORCPT ); Wed, 20 Mar 2013 06:53:47 -0400 Received: from metis.ext.pengutronix.de ([92.198.50.35]:37972 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756752Ab3CTKw7 (ORCPT ); Wed, 20 Mar 2013 06:52:59 -0400 From: Philipp Zabel To: linux-kernel@vger.kernel.org Cc: Arnd Bergmann , Greg Kroah-Hartman , Grant Likely , Rob Herring , Paul Gortmaker , Shawn Guo , Huang Shijie , Dong Aisheng , Matt Porter , Fabio Estevam , Javier Martin , kernel@pengutronix.de, devicetree-discuss@lists.ozlabs.org, Philipp Zabel Subject: [PATCH v9 RESEND 3/4] media: coda: use genalloc API Date: Wed, 20 Mar 2013 11:52:46 +0100 Message-Id: <1363776767-2635-4-git-send-email-p.zabel@pengutronix.de> X-Mailer: git-send-email 1.8.2.rc2 In-Reply-To: <1363776767-2635-1-git-send-email-p.zabel@pengutronix.de> References: <1363776767-2635-1-git-send-email-p.zabel@pengutronix.de> X-SA-Exim-Connect-IP: 10.1.0.7 X-SA-Exim-Mail-From: p.zabel@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6800 Lines: 203 This patch depends on "genalloc: add devres support, allow to find a managed pool by device", which provides the of_get_named_gen_pool and dev_get_gen_pool functions. Signed-off-by: Philipp Zabel Acked-By: Javier Martin Acked-by: Grant Likely --- Documentation/devicetree/bindings/media/coda.txt | 30 +++++++++++++++ drivers/media/platform/Kconfig | 1 - drivers/media/platform/coda.c | 45 +++++++++++++++------- include/linux/platform_data/coda.h | 18 +++++++++ 4 files changed, 79 insertions(+), 15 deletions(-) create mode 100644 Documentation/devicetree/bindings/media/coda.txt create mode 100644 include/linux/platform_data/coda.h diff --git a/Documentation/devicetree/bindings/media/coda.txt b/Documentation/devicetree/bindings/media/coda.txt new file mode 100644 index 0000000..2865d04 --- /dev/null +++ b/Documentation/devicetree/bindings/media/coda.txt @@ -0,0 +1,30 @@ +Chips&Media Coda multi-standard codec IP +======================================== + +Coda codec IPs are present in i.MX SoCs in various versions, +called VPU (Video Processing Unit). + +Required properties: +- compatible : should be "fsl,-src" for i.MX SoCs: + (a) "fsl,imx27-vpu" for CodaDx6 present in i.MX27 + (b) "fsl,imx53-vpu" for CODA7541 present in i.MX53 + (c) "fsl,imx6q-vpu" for CODA960 present in i.MX6q +- reg: should be register base and length as documented in the + SoC reference manual +- interrupts : Should contain the VPU interrupt. For CODA960, + a second interrupt is needed for the MJPEG unit. +- clocks : Should contain the ahb and per clocks, in the order + determined by the clock-names property. +- clock-names : Should be "ahb", "per" +- iram : phandle pointing to the SRAM device node + +Example: + +vpu: vpu@63ff4000 { + compatible = "fsl,imx53-vpu"; + reg = <0x63ff4000 0x1000>; + interrupts = <9>; + clocks = <&clks 63>, <&clks 63>; + clock-names = "ahb", "per"; + iram = <&ocram>; +}; diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig index 05d7b63..bbf83c1 100644 --- a/drivers/media/platform/Kconfig +++ b/drivers/media/platform/Kconfig @@ -145,7 +145,6 @@ config VIDEO_CODA depends on VIDEO_DEV && VIDEO_V4L2 && ARCH_MXC select VIDEOBUF2_DMA_CONTIG select V4L2_MEM2MEM_DEV - select IRAM_ALLOC if SOC_IMX53 ---help--- Coda is a range of video codec IPs that supports H.264, MPEG-4, and other video formats. diff --git a/drivers/media/platform/coda.c b/drivers/media/platform/coda.c index 20827ba..b931c2a 100644 --- a/drivers/media/platform/coda.c +++ b/drivers/media/platform/coda.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -23,7 +24,7 @@ #include #include #include -#include +#include #include #include @@ -43,6 +44,7 @@ #define CODA7_WORK_BUF_SIZE (512 * 1024 + CODA_FMO_BUF_SIZE * 8 * 1024) #define CODA_PARA_BUF_SIZE (10 * 1024) #define CODA_ISRAM_SIZE (2048 * 2) +#define CODADX6_IRAM_SIZE 0xb000 #define CODA7_IRAM_SIZE 0x14000 /* 81920 bytes */ #define CODA_MAX_FRAMEBUFFERS 2 @@ -128,7 +130,10 @@ struct coda_dev { struct coda_aux_buf codebuf; struct coda_aux_buf workbuf; + struct gen_pool *iram_pool; + long unsigned int iram_vaddr; long unsigned int iram_paddr; + unsigned long iram_size; spinlock_t irqlock; struct mutex dev_mutex; @@ -1926,6 +1931,9 @@ static int coda_probe(struct platform_device *pdev) const struct of_device_id *of_id = of_match_device(of_match_ptr(coda_dt_ids), &pdev->dev); const struct platform_device_id *pdev_id; + struct coda_platform_data *pdata = pdev->dev.platform_data; + struct device_node *np = pdev->dev.of_node; + struct gen_pool *pool; struct coda_dev *dev; struct resource *res; int ret, irq; @@ -1988,6 +1996,16 @@ static int coda_probe(struct platform_device *pdev) return -ENOENT; } + /* Get IRAM pool from device tree or platform data */ + pool = of_get_named_gen_pool(np, "iram", 0); + if (!pool && pdata) + pool = dev_get_gen_pool(pdata->iram_dev); + if (!pool) { + dev_err(&pdev->dev, "iram pool not available\n"); + return -ENOMEM; + } + dev->iram_pool = pool; + ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); if (ret) return ret; @@ -2022,18 +2040,17 @@ static int coda_probe(struct platform_device *pdev) return -ENOMEM; } - if (dev->devtype->product == CODA_DX6) { - dev->iram_paddr = 0xffff4c00; - } else { - void __iomem *iram_vaddr; - - iram_vaddr = iram_alloc(CODA7_IRAM_SIZE, - &dev->iram_paddr); - if (!iram_vaddr) { - dev_err(&pdev->dev, "unable to alloc iram\n"); - return -ENOMEM; - } + if (dev->devtype->product == CODA_DX6) + dev->iram_size = CODADX6_IRAM_SIZE; + else + dev->iram_size = CODA7_IRAM_SIZE; + dev->iram_vaddr = gen_pool_alloc(dev->iram_pool, dev->iram_size); + if (!dev->iram_vaddr) { + dev_err(&pdev->dev, "unable to alloc iram\n"); + return -ENOMEM; } + dev->iram_paddr = gen_pool_virt_to_phys(dev->iram_pool, + dev->iram_vaddr); platform_set_drvdata(pdev, dev); @@ -2050,8 +2067,8 @@ static int coda_remove(struct platform_device *pdev) if (dev->alloc_ctx) vb2_dma_contig_cleanup_ctx(dev->alloc_ctx); v4l2_device_unregister(&dev->v4l2_dev); - if (dev->iram_paddr) - iram_free(dev->iram_paddr, CODA7_IRAM_SIZE); + if (dev->iram_vaddr) + gen_pool_free(dev->iram_pool, dev->iram_vaddr, dev->iram_size); if (dev->codebuf.vaddr) dma_free_coherent(&pdev->dev, dev->codebuf.size, &dev->codebuf.vaddr, dev->codebuf.paddr); diff --git a/include/linux/platform_data/coda.h b/include/linux/platform_data/coda.h new file mode 100644 index 0000000..6ad4410 --- /dev/null +++ b/include/linux/platform_data/coda.h @@ -0,0 +1,18 @@ +/* + * Copyright (C) 2013 Philipp Zabel, Pengutronix + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ +#ifndef PLATFORM_CODA_H +#define PLATFORM_CODA_H + +struct device; + +struct coda_platform_data { + struct device *iram_dev; +}; + +#endif -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/