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Wysocki" , Kuninori Morimoto , Mark Brown , Inki Dae Subject: [PATCH v7 1/4] dmaengine: pl330: remove pdata based initialization Date: Wed, 25 Jan 2017 11:28:05 +0100 Message-id: <1485340088-25481-2-git-send-email-m.szyprowski@samsung.com> X-Mailer: git-send-email 1.9.1 In-reply-to: <1485340088-25481-1-git-send-email-m.szyprowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAAzWSe0hTYRjG+3YuO1Nnh6PUl5rWyiAlUzE4qYhBxSkJiv7QCsyTHqakTjaV tNswy22VmWGtUpy3hJW3JaKm6aZtmuLyioalon+kZAXeKC/kdvS/3/s97/M88PIRCJWNuREJ yamcPJlNlOAOaIP5b9+RrtuqKP/icYQe6jcJ6DptDUYXTM3g9NuCdYzOn8hDaau1VkjPdTQD 2jA9gtGDzYU4vfC4E9Ba60cBXdX5TUj39gxgtKUqkp7NbUPDdzK1C1k4U9YyK2AMejXOjI+0 4Mz78rvMcu9TlKkfzkGZ3Ho9YBYMnudFlx1C47jEhHROfjQsxiG+vfoRSFnxvfHOWIcqQfVB DRARkAyCuoEZwPMu+OV7Da4BDgRFVgBosegQflgA0Gz8Kth2NMwsC3nhDYDDI4t2O0UqBXCp 1t3GOBkANfMae5Qr2QZga9O0PQohlQjsMdnsIsKFjID6xl+4jVHSG5b+HLRXiEkGfsjWbtV5 wm7zM8zGIvIM1K532qsh+VkIJxs6NwVic9gLDe0Iv38SVq+83vK6wDlLvZBnD6hWGbfenwCY dd+XZy2AffNinkNgh6Xf3oWQzjC/4QXCx4uh6gHFrzBw9Y8O4/kELJ+bwvhLFALYqCwR5AEP HdihB65cmiJJyimC/BRskiItWeoXK0sygM2/0bNhWWwEZeZgEyAJIHES/4jLiaIwNl2RkWQC kEAkruLTt1RRlDiOzcjk5LKr8rRETmEC7gQq2S1u0Q1FUqSUTeWuc1wKJ99WBYTITQmKqAui mEx/TQa3ZhpPqDgncA58OKl2+h0SgZpDhU0ba2GXJq1uxmAqsJKdkLuP5XqJsjdeqo+PCmO7 Zc+vzEZKKfPSXHse27yPSL/4yvHw2Kf4Yp9j4a3iQ3f+OVmLckKi9+TJvOjoa3LHklOjXZZV 7/0HqLOllXE5jfeIm3oJqohnA3wQuYL9D7StdbcXAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrMIsWRmVeSWpSXmKPExsVy+t/xa7psdR0RBvN/KVpcuXiIyWLjjPWs FlMfPmGzWD31L6vFpPsTWCzOn9/AbvHq8C5Gi02Pr7FaXN41h83ic+8RRosZ5/cxWaw9cpfd 4szpS6wWx9eGW7zs28/iwO+x4XMTm8fiPS+ZPDat6mTzuHNtD5vH5iX1Ht/OTGTx2HK1ncWj b8sqRo/Pm+QCOKPcbDJSE1NSixRS85LzUzLz0m2VQkPcdC2UFPISc1NtlSJ0fUOClBTKEnNK gTwjAzTg4BzgHqykb5fglnFgXQ9jwXftijUHN7I0MK5T6WLk5JAQMJHY9uQbO4QtJnHh3nq2 LkYuDiGBJYwS21bsYoFwmpgk9i+fA1bFJmAo0fW2C6xKRGA/o8SHW9fZQBLMAk3MEuuegtnC At4Sq3a8A7NZBFQlFr25zARi8wp4SOxumcEEsU5O4uSxyawgNqeAp8SMv0eAFnAAbfOQ2Ljd egIj7wJGhlWMIqmlxbnpucWGesWJucWleel6yfm5mxiBEbTt2M/NOxgvbQw+xCjAwajEwzsh qT1CiDWxrLgy9xCjBAezkgivW01HhBBvSmJlVWpRfnxRaU5q8SFGU6CbJjJLiSbnA6M7ryTe 0MTQ3NLQyNjCwtzISEmct+TDlXAhgfTEktTs1NSC1CKYPiYOTqkGRubf7wJTr31edvl4waTQ pc8MVU+8Uv5x9qrknZCp3j6ZFh43JAIeZq0VPF6eICYZ0yNk9Eotr/3OFtHuhfF+Ej9LzAPO bTPfuT958dQFHycIXTo+L3T3uVniltvPbyra+7IlZueTn15HDrx9OVnWbcLR0o+zjm/f9pNh xp9tRYbCB9NnNc8O2xSsxFKckWioxVxUnAgA0M+V5bYCAAA= X-MTR: 20000000000000000@CPGS X-CMS-MailID: 20170125102823eucas1p2a21db04249e4c844ac21d612f76b1e12 X-Msg-Generator: CA X-Sender-IP: 182.198.249.179 X-Local-Sender: =?utf-8?q?Marek_Szyprowski=1BSRPOL-Kernel_=28TP=29=1B?= =?utf-8?b?7IK87ISx7KCE7J6QG1NlbmlvciBTb2Z0d2FyZSBFbmdpbmVlcg==?= X-Global-Sender: =?utf-8?q?Marek_Szyprowski=1BSRPOL-Kernel_=28TP=29=1BSam?= =?utf-8?q?sung_Electronics=1BSenior_Software_Engineer?= X-Sender-Code: =?utf-8?q?C10=1BEHQ=1BC10CD02CD027392?= CMS-TYPE: 201P X-HopCount: 7 X-CMS-RootMailID: 20170125102823eucas1p2a21db04249e4c844ac21d612f76b1e12 X-RootMTR: 20170125102823eucas1p2a21db04249e4c844ac21d612f76b1e12 References: <1485340088-25481-1-git-send-email-m.szyprowski@samsung.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This driver is now used only on platforms which support device tree, so it is safe to remove legacy platform data based initialization code. Signed-off-by: Marek Szyprowski Reviewed-by: Ulf Hansson Acked-by: Arnd Bergmann For plat-samsung: Acked-by: Krzysztof Kozlowski --- arch/arm/plat-samsung/devs.c | 1 - drivers/dma/pl330.c | 42 ++++++++---------------------------------- include/linux/amba/pl330.h | 35 ----------------------------------- 3 files changed, 8 insertions(+), 70 deletions(-) delete mode 100644 include/linux/amba/pl330.h -- 1.9.1 diff --git a/arch/arm/plat-samsung/devs.c b/arch/arm/plat-samsung/devs.c index 03fac123676d..dc269d9143bc 100644 --- a/arch/arm/plat-samsung/devs.c +++ b/arch/arm/plat-samsung/devs.c @@ -10,7 +10,6 @@ * published by the Free Software Foundation. */ -#include #include #include #include diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index 7539f73df9e0..78be12b45a45 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -22,7 +22,6 @@ #include #include #include -#include #include #include #include @@ -2076,18 +2075,6 @@ static void pl330_tasklet(unsigned long data) } } -bool pl330_filter(struct dma_chan *chan, void *param) -{ - u8 *peri_id; - - if (chan->device->dev->driver != &pl330_driver.drv) - return false; - - peri_id = chan->private; - return *peri_id == (unsigned long)param; -} -EXPORT_SYMBOL(pl330_filter); - static struct dma_chan *of_dma_pl330_xlate(struct of_phandle_args *dma_spec, struct of_dma *ofdma) { @@ -2832,7 +2819,6 @@ static int __maybe_unused pl330_resume(struct device *dev) static int pl330_probe(struct amba_device *adev, const struct amba_id *id) { - struct dma_pl330_platdata *pdat; struct pl330_config *pcfg; struct pl330_dmac *pl330; struct dma_pl330_chan *pch, *_p; @@ -2842,8 +2828,6 @@ static int __maybe_unused pl330_resume(struct device *dev) int num_chan; struct device_node *np = adev->dev.of_node; - pdat = dev_get_platdata(&adev->dev); - ret = dma_set_mask_and_coherent(&adev->dev, DMA_BIT_MASK(32)); if (ret) return ret; @@ -2856,7 +2840,7 @@ static int __maybe_unused pl330_resume(struct device *dev) pd = &pl330->ddma; pd->dev = &adev->dev; - pl330->mcbufsz = pdat ? pdat->mcbuf_sz : 0; + pl330->mcbufsz = 0; /* get quirk */ for (i = 0; i < ARRAY_SIZE(of_quirks); i++) @@ -2900,10 +2884,7 @@ static int __maybe_unused pl330_resume(struct device *dev) INIT_LIST_HEAD(&pd->channels); /* Initialize channel parameters */ - if (pdat) - num_chan = max_t(int, pdat->nr_valid_peri, pcfg->num_chan); - else - num_chan = max_t(int, pcfg->num_peri, pcfg->num_chan); + num_chan = max_t(int, pcfg->num_peri, pcfg->num_chan); pl330->num_peripherals = num_chan; @@ -2915,11 +2896,8 @@ static int __maybe_unused pl330_resume(struct device *dev) for (i = 0; i < num_chan; i++) { pch = &pl330->peripherals[i]; - if (!adev->dev.of_node) - pch->chan.private = pdat ? &pdat->peri_id[i] : NULL; - else - pch->chan.private = adev->dev.of_node; + pch->chan.private = adev->dev.of_node; INIT_LIST_HEAD(&pch->submitted_list); INIT_LIST_HEAD(&pch->work_list); INIT_LIST_HEAD(&pch->completed_list); @@ -2932,15 +2910,11 @@ static int __maybe_unused pl330_resume(struct device *dev) list_add_tail(&pch->chan.device_node, &pd->channels); } - if (pdat) { - pd->cap_mask = pdat->cap_mask; - } else { - dma_cap_set(DMA_MEMCPY, pd->cap_mask); - if (pcfg->num_peri) { - dma_cap_set(DMA_SLAVE, pd->cap_mask); - dma_cap_set(DMA_CYCLIC, pd->cap_mask); - dma_cap_set(DMA_PRIVATE, pd->cap_mask); - } + dma_cap_set(DMA_MEMCPY, pd->cap_mask); + if (pcfg->num_peri) { + dma_cap_set(DMA_SLAVE, pd->cap_mask); + dma_cap_set(DMA_CYCLIC, pd->cap_mask); + dma_cap_set(DMA_PRIVATE, pd->cap_mask); } pd->device_alloc_chan_resources = pl330_alloc_chan_resources; diff --git a/include/linux/amba/pl330.h b/include/linux/amba/pl330.h deleted file mode 100644 index fe93758e8403..000000000000 --- a/include/linux/amba/pl330.h +++ /dev/null @@ -1,35 +0,0 @@ -/* linux/include/linux/amba/pl330.h - * - * Copyright (C) 2010 Samsung Electronics Co. Ltd. - * Jaswinder Singh - * - * 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 __AMBA_PL330_H_ -#define __AMBA_PL330_H_ - -#include - -struct dma_pl330_platdata { - /* - * Number of valid peripherals connected to DMAC. - * This may be different from the value read from - * CR0, as the PL330 implementation might have 'holes' - * in the peri list or the peri could also be reached - * from another DMAC which the platform prefers. - */ - u8 nr_valid_peri; - /* Array of valid peripherals */ - u8 *peri_id; - /* Operational capabilities */ - dma_cap_mask_t cap_mask; - /* Bytes to allocate for MC buffer */ - unsigned mcbuf_sz; -}; - -extern bool pl330_filter(struct dma_chan *chan, void *param); -#endif /* __AMBA_PL330_H_ */ From patchwork Wed Jan 25 10:28:06 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marek Szyprowski X-Patchwork-Id: 92419 Delivered-To: patch@linaro.org Received: by 10.140.20.99 with SMTP id 90csp2142033qgi; Wed, 25 Jan 2017 02:29:39 -0800 (PST) X-Received: by 10.98.252.203 with SMTP id e194mr45291545pfh.8.1485340179576; Wed, 25 Jan 2017 02:29:39 -0800 (PST) Return-Path: Received: from vger.kernel.org (vger.kernel.org. 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Wysocki" , Kuninori Morimoto , Mark Brown , Inki Dae Subject: [PATCH v7 2/4] dmaengine: Forward slave device pointer to of_xlate callback Date: Wed, 25 Jan 2017 11:28:06 +0100 Message-id: <1485340088-25481-3-git-send-email-m.szyprowski@samsung.com> X-Mailer: git-send-email 1.9.1 In-reply-to: <1485340088-25481-1-git-send-email-m.szyprowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA0WSbUhTYRSAe3fvtqt06zqlXvz6MahAyTKFLn2IQsX1R2EhzexH3fI2xU1t U8swG5qpk8w0daWikQp+MZtjqfkx5nDa/HYKgWWmhbOtotX8CCPnNfr3nHOecw7vy8EQQQ7X G0tISmVkSbREyHNHdQNrYwfNd/NjDo87AkjLhIFDvlSpuWTZ/CKPbC7b4JIlc8UoOTbWxieX +7sAqVmY4ZJTXVU80vHQCEjVWC+HbDW+45PD5kkuaWoVkdaiPjR8N9XmyOZRL7qtHErTVMCj Zme6eVR73T3KOfwYpbTTeShVpG0ClEPjH+UW634ijpEkpDOyQ2FX3eNH7FZOytAquG38/gRV AJsZKAGGQSIU1ldmKYHbJu6B4+/VPCVwxwREA4DFs2+BqyAgHADW5V5kpVD4YaXlv1Sg+wzY QMGB004V6rJ4RDBU2pVblhfRB2BP5wLiChBCgUCzwcl3WZ7ERWir/sF1MUrsg3NNRVt5nKBg 97qay+7zh0MDpVvsRkRC1YaR7xoEiTd8+NxWuP0IP6jRI6x/Cg5qG7d7PeGySctn2RdOlRai LD8CMDs3kGUVgKN2nOXjsN80sdWLELtgia4CYcfjMP+BgEUKNhpusHYEnK+rRNkfqgLQUpNa DHxrwY4m4MWkyaViRh4cJKel8rQkcdD1ZKkGbJ6G+Y/pWwf4lBNtAAQGhDvxpbi8GAGXTpdn SA0AYojQCz+TmR8jwOPojDuMLPmKLE3CyA3AB0OFe/GeWotIQIjpVCaRYVIY2b8qB3PzVoD9 7ZdJ0ZHeSMK44vGVDsjLw+0tdISqJsTHejSkQvTr2uSk7cI5cSoa1Xpz9Gf4rQk/PeeSX+e6 43fdxyTTanmsrTzQaj7wBZUMvCaOQXO9v7fvyNPKpbPNxnpcl1kKswwe1ea10+fDGvTP1CdH O+7POxejVYOvopwifSLHIkTl8XRwACKT038Be2rC8BYDAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrCIsWRmVeSWpSXmKPExsVy+t/xa7pHazsiDJbeF7K4cvEQk8XGGetZ LaY+fMJmsXrqX1aLSfcnsFicP7+B3eLV4V2MFpseX2O1uLxrDpvF594jjBYzzu9jslh75C67 xZnTl1gtjq8Nt3jZt5/Fgd9jw+cmNo/Fe14yeWxa1cnmcefaHjaPzUvqPb6dmcjiseVqO4tH 35ZVjB6fN8kFcEa52WSkJqakFimk5iXnp2TmpdsqhYa46VooKeQl5qbaKkXo+oYEKSmUJeaU AnlGBmjAwTnAPVhJ3y7BLePs25dMBSd/MFYc+TCFpYHxzWnGLkZODgkBE4kH39ewQdhiEhfu rQeyuTiEBJYwSrz4cBssISTQxCQx7WkpiM0mYCjR9bYLrEhEYD+jxIdb18GKmAWamCXWPQWz hQXCJN7M/cQKYrMIqErcX9XHDmLzCnhI7Pm1nhVim5zEyWOTwWxOAU+JGX+PANVwAC3zkNi4 3XoCI+8CRoZVjCKppcW56bnFRnrFibnFpXnpesn5uZsYgTG07djPLTsYu94FH2IU4GBU4uGd kNQeIcSaWFZcmXuIUYKDWUmE162mI0KINyWxsiq1KD++qDQntfgQoynQTROZpUST84HxnVcS b2hiaG5paGRsYWFuZKQkzjv1w5VwIYH0xJLU7NTUgtQimD4mDk6pBsZ9swMnef4rlpi758m6 X/Elr1wcWZNPhInO0K6Z9fFTSaVy0Cd5o0ydqi9XPyo6dX51OTU1yaX76PHndzQ8vx+tvOlT nHnhVOUD1rV8fztbIn/Udtje2/DX2eznBTtnWft7kjsZmwO5TYI7/ZMOLT9+81R1td2cWTtj zftzjh+yP+dw9pvPWTYlluKMREMt5qLiRAD9L+T7twIAAA== X-MTR: 20000000000000000@CPGS X-CMS-MailID: 20170125102824eucas1p1cf027184286131ff628eb7113c3f9e60 X-Msg-Generator: CA X-Sender-IP: 182.198.249.180 X-Local-Sender: =?utf-8?q?Marek_Szyprowski=1BSRPOL-Kernel_=28TP=29=1B?= =?utf-8?b?7IK87ISx7KCE7J6QG1NlbmlvciBTb2Z0d2FyZSBFbmdpbmVlcg==?= X-Global-Sender: =?utf-8?q?Marek_Szyprowski=1BSRPOL-Kernel_=28TP=29=1BSam?= =?utf-8?q?sung_Electronics=1BSenior_Software_Engineer?= X-Sender-Code: =?utf-8?q?C10=1BEHQ=1BC10CD02CD027392?= CMS-TYPE: 201P X-HopCount: 7 X-CMS-RootMailID: 20170125102824eucas1p1cf027184286131ff628eb7113c3f9e60 X-RootMTR: 20170125102824eucas1p1cf027184286131ff628eb7113c3f9e60 References: <1485340088-25481-1-git-send-email-m.szyprowski@samsung.com> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Add pointer to slave device to of_dma_xlate to let DMA engine driver to know which slave device is using given DMA channel. This will be later used to implement non-irq-safe runtime PM for DMA engine driver. Signed-off-by: Marek Szyprowski Reviewed-by: Ulf Hansson Acked-by: Arnd Bergmann --- drivers/dma/amba-pl08x.c | 2 +- drivers/dma/at_hdmac.c | 4 ++-- drivers/dma/at_xdmac.c | 2 +- drivers/dma/bcm2835-dma.c | 2 +- drivers/dma/coh901318.c | 2 +- drivers/dma/cppi41.c | 2 +- drivers/dma/dma-jz4780.c | 2 +- drivers/dma/dmaengine.c | 2 +- drivers/dma/dw/platform.c | 2 +- drivers/dma/edma.c | 4 ++-- drivers/dma/fsl-edma.c | 2 +- drivers/dma/img-mdc-dma.c | 2 +- drivers/dma/imx-dma.c | 2 +- drivers/dma/imx-sdma.c | 2 +- drivers/dma/k3dma.c | 2 +- drivers/dma/lpc18xx-dmamux.c | 2 +- drivers/dma/mmp_pdma.c | 2 +- drivers/dma/mmp_tdma.c | 2 +- drivers/dma/moxart-dma.c | 2 +- drivers/dma/mxs-dma.c | 2 +- drivers/dma/nbpfaxi.c | 2 +- drivers/dma/of-dma.c | 19 ++++++++++++------- drivers/dma/pl330.c | 3 ++- drivers/dma/pxa_dma.c | 2 +- drivers/dma/qcom/bam_dma.c | 2 +- drivers/dma/sh/rcar-dmac.c | 2 +- drivers/dma/sh/shdma-of.c | 2 +- drivers/dma/sh/usb-dmac.c | 2 +- drivers/dma/sirf-dma.c | 2 +- drivers/dma/st_fdma.c | 2 +- drivers/dma/ste_dma40.c | 2 +- drivers/dma/stm32-dma.c | 2 +- drivers/dma/sun4i-dma.c | 2 +- drivers/dma/sun6i-dma.c | 2 +- drivers/dma/tegra20-apb-dma.c | 2 +- drivers/dma/tegra210-adma.c | 2 +- drivers/dma/xilinx/xilinx_dma.c | 2 +- drivers/dma/xilinx/zynqmp_dma.c | 2 +- drivers/dma/zx_dma.c | 2 +- include/linux/of_dma.h | 19 +++++++++++-------- sound/soc/sh/rcar/dma.c | 5 +++-- sound/soc/sh/rcar/dvc.c | 3 ++- sound/soc/sh/rcar/rsnd.h | 3 ++- sound/soc/sh/rcar/src.c | 3 ++- sound/soc/sh/rcar/ssi.c | 3 ++- 45 files changed, 75 insertions(+), 61 deletions(-) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-pm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c index 0b7c6ce629a6..194089c98755 100644 --- a/drivers/dma/amba-pl08x.c +++ b/drivers/dma/amba-pl08x.c @@ -2059,7 +2059,7 @@ static struct dma_chan *pl08x_find_chan_id(struct pl08x_driver_data *pl08x, } static struct dma_chan *pl08x_of_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct pl08x_driver_data *pl08x = ofdma->of_dma_data; struct dma_chan *dma_chan; diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c index 1baf3404a365..b228b263ac0c 100644 --- a/drivers/dma/at_hdmac.c +++ b/drivers/dma/at_hdmac.c @@ -1788,7 +1788,7 @@ static bool at_dma_filter(struct dma_chan *chan, void *slave) } static struct dma_chan *at_dma_xlate(struct of_phandle_args *dma_spec, - struct of_dma *of_dma) + struct of_dma *of_dma, struct device *slave) { struct dma_chan *chan; struct at_dma_chan *atchan; @@ -1847,7 +1847,7 @@ static struct dma_chan *at_dma_xlate(struct of_phandle_args *dma_spec, } #else static struct dma_chan *at_dma_xlate(struct of_phandle_args *dma_spec, - struct of_dma *of_dma) + struct of_dma *of_dma, struct device *slave) { return NULL; } diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c index 7d4e0bcda9af..9ddd868c9b59 100644 --- a/drivers/dma/at_xdmac.c +++ b/drivers/dma/at_xdmac.c @@ -508,7 +508,7 @@ static inline void at_xdmac_increment_block_count(struct dma_chan *chan, } static struct dma_chan *at_xdmac_xlate(struct of_phandle_args *dma_spec, - struct of_dma *of_dma) + struct of_dma *of_dma, struct device *slave) { struct at_xdmac *atxdmac = of_dma->of_dma_data; struct at_xdmac_chan *atchan; diff --git a/drivers/dma/bcm2835-dma.c b/drivers/dma/bcm2835-dma.c index e18dc596cf24..e9c417ad2141 100644 --- a/drivers/dma/bcm2835-dma.c +++ b/drivers/dma/bcm2835-dma.c @@ -877,7 +877,7 @@ static void bcm2835_dma_free(struct bcm2835_dmadev *od) MODULE_DEVICE_TABLE(of, bcm2835_dma_of_match); static struct dma_chan *bcm2835_dma_xlate(struct of_phandle_args *spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct bcm2835_dmadev *d = ofdma->of_dma_data; struct dma_chan *chan; diff --git a/drivers/dma/coh901318.c b/drivers/dma/coh901318.c index 74794c9859f6..dbc4fb44f326 100644 --- a/drivers/dma/coh901318.c +++ b/drivers/dma/coh901318.c @@ -1779,7 +1779,7 @@ static bool coh901318_filter_base_and_id(struct dma_chan *chan, void *data) } static struct dma_chan *coh901318_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct coh901318_filter_args args = { .base = ofdma->of_dma_data, diff --git a/drivers/dma/cppi41.c b/drivers/dma/cppi41.c index d5ba43a87a68..389a2278b6a0 100644 --- a/drivers/dma/cppi41.c +++ b/drivers/dma/cppi41.c @@ -932,7 +932,7 @@ static bool cpp41_dma_filter_fn(struct dma_chan *chan, void *param) }; static struct dma_chan *cppi41_dma_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { int count = dma_spec->args_count; struct of_dma_filter_info *info = ofdma->of_dma_data; diff --git a/drivers/dma/dma-jz4780.c b/drivers/dma/dma-jz4780.c index 7373b7a555ec..f65f71649898 100644 --- a/drivers/dma/dma-jz4780.c +++ b/drivers/dma/dma-jz4780.c @@ -707,7 +707,7 @@ static bool jz4780_dma_filter_fn(struct dma_chan *chan, void *param) } static struct dma_chan *jz4780_of_dma_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct jz4780_dma_dev *jzdma = ofdma->of_dma_data; dma_cap_mask_t mask = jzdma->dma_device.cap_mask; diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c index 24e0221fd66d..422444bd7ee1 100644 --- a/drivers/dma/dmaengine.c +++ b/drivers/dma/dmaengine.c @@ -708,7 +708,7 @@ struct dma_chan *dma_request_chan(struct device *dev, const char *name) /* If device-tree is present get slave info from here */ if (dev->of_node) - chan = of_dma_request_slave_channel(dev->of_node, name); + chan = of_dma_request_slave_channel(dev, dev->of_node, name); /* If device was enumerated by ACPI get slave info from here */ if (has_acpi_companion(dev) && !chan) diff --git a/drivers/dma/dw/platform.c b/drivers/dma/dw/platform.c index b1655e40cfa2..1eb8a31b6775 100644 --- a/drivers/dma/dw/platform.c +++ b/drivers/dma/dw/platform.c @@ -29,7 +29,7 @@ #define DRV_NAME "dw_dmac" static struct dma_chan *dw_dma_of_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave_dev) { struct dw_dma *dw = ofdma->of_dma_data; struct dw_dma_slave slave = { diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c index 3879f80a4815..d2e7d893d984 100644 --- a/drivers/dma/edma.c +++ b/drivers/dma/edma.c @@ -2117,7 +2117,7 @@ static struct edma_soc_info *edma_setup_info_from_dt(struct device *dev, } static struct dma_chan *of_edma_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct edma_cc *ecc = ofdma->of_dma_data; struct dma_chan *chan = NULL; @@ -2161,7 +2161,7 @@ static struct edma_soc_info *edma_setup_info_from_dt(struct device *dev, } static struct dma_chan *of_edma_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { return NULL; } diff --git a/drivers/dma/fsl-edma.c b/drivers/dma/fsl-edma.c index 6775f2c74e25..915aa8182204 100644 --- a/drivers/dma/fsl-edma.c +++ b/drivers/dma/fsl-edma.c @@ -750,7 +750,7 @@ static void fsl_edma_issue_pending(struct dma_chan *chan) } static struct dma_chan *fsl_edma_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct fsl_edma_engine *fsl_edma = ofdma->of_dma_data; struct dma_chan *chan, *_chan; diff --git a/drivers/dma/img-mdc-dma.c b/drivers/dma/img-mdc-dma.c index 54db1411ce73..9a969cbdd384 100644 --- a/drivers/dma/img-mdc-dma.c +++ b/drivers/dma/img-mdc-dma.c @@ -793,7 +793,7 @@ static irqreturn_t mdc_chan_irq(int irq, void *dev_id) } static struct dma_chan *mdc_of_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct mdc_dma *mdma = ofdma->of_dma_data; struct dma_chan *chan; diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c index ab0fb804fb1e..b145babe366b 100644 --- a/drivers/dma/imx-dma.c +++ b/drivers/dma/imx-dma.c @@ -1032,7 +1032,7 @@ static bool imxdma_filter_fn(struct dma_chan *chan, void *param) } static struct dma_chan *imxdma_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { int count = dma_spec->args_count; struct imxdma_engine *imxdma = ofdma->of_dma_data; diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index d1651a50c349..7c3cdb378f98 100644 --- a/drivers/dma/imx-sdma.c +++ b/drivers/dma/imx-sdma.c @@ -1659,7 +1659,7 @@ static bool sdma_filter_fn(struct dma_chan *chan, void *fn_param) } static struct dma_chan *sdma_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct sdma_engine *sdma = ofdma->of_dma_data; dma_cap_mask_t mask = sdma->dma_device.cap_mask; diff --git a/drivers/dma/k3dma.c b/drivers/dma/k3dma.c index 01e25c68dd5a..dd0e7fe9e54a 100644 --- a/drivers/dma/k3dma.c +++ b/drivers/dma/k3dma.c @@ -786,7 +786,7 @@ static int k3_dma_transfer_resume(struct dma_chan *chan) MODULE_DEVICE_TABLE(of, k3_pdma_dt_ids); static struct dma_chan *k3_of_dma_simple_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct k3_dma_dev *d = ofdma->of_dma_data; unsigned int request = dma_spec->args[0]; diff --git a/drivers/dma/lpc18xx-dmamux.c b/drivers/dma/lpc18xx-dmamux.c index 761f32687055..e730bcc8d92e 100644 --- a/drivers/dma/lpc18xx-dmamux.c +++ b/drivers/dma/lpc18xx-dmamux.c @@ -53,7 +53,7 @@ static void lpc18xx_dmamux_free(struct device *dev, void *route_data) } static void *lpc18xx_dmamux_reserve(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct platform_device *pdev = of_find_device_by_node(ofdma->of_node); struct lpc18xx_dmamux_data *dmamux = platform_get_drvdata(pdev); diff --git a/drivers/dma/mmp_pdma.c b/drivers/dma/mmp_pdma.c index eb3a1f42ab06..569ec8f1ccee 100644 --- a/drivers/dma/mmp_pdma.c +++ b/drivers/dma/mmp_pdma.c @@ -993,7 +993,7 @@ static int mmp_pdma_chan_init(struct mmp_pdma_device *pdev, int idx, int irq) MODULE_DEVICE_TABLE(of, mmp_pdma_dt_ids); static struct dma_chan *mmp_pdma_dma_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct mmp_pdma_device *d = ofdma->of_dma_data; struct dma_chan *chan; diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c index 13c68b6434ce..ca56e73797c9 100644 --- a/drivers/dma/mmp_tdma.c +++ b/drivers/dma/mmp_tdma.c @@ -591,7 +591,7 @@ static bool mmp_tdma_filter_fn(struct dma_chan *chan, void *fn_param) } static struct dma_chan *mmp_tdma_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct mmp_tdma_device *tdev = ofdma->of_dma_data; dma_cap_mask_t mask = tdev->device.cap_mask; diff --git a/drivers/dma/moxart-dma.c b/drivers/dma/moxart-dma.c index e1a5c2242f6f..d7c32a3c1bac 100644 --- a/drivers/dma/moxart-dma.c +++ b/drivers/dma/moxart-dma.c @@ -330,7 +330,7 @@ static struct dma_async_tx_descriptor *moxart_prep_slave_sg( } static struct dma_chan *moxart_of_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct moxart_dmadev *mdc = ofdma->of_dma_data; struct dma_chan *chan; diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c index e217268c7098..3cc0e6b99f13 100644 --- a/drivers/dma/mxs-dma.c +++ b/drivers/dma/mxs-dma.c @@ -747,7 +747,7 @@ static bool mxs_dma_filter_fn(struct dma_chan *chan, void *fn_param) } static struct dma_chan *mxs_dma_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct mxs_dma_engine *mxs_dma = ofdma->of_dma_data; dma_cap_mask_t mask = mxs_dma->dma_device.cap_mask; diff --git a/drivers/dma/nbpfaxi.c b/drivers/dma/nbpfaxi.c index 3f45b9bdf201..cb6a981beacd 100644 --- a/drivers/dma/nbpfaxi.c +++ b/drivers/dma/nbpfaxi.c @@ -1096,7 +1096,7 @@ static void nbpf_free_chan_resources(struct dma_chan *dchan) } static struct dma_chan *nbpf_of_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct nbpf_device *nbpf = ofdma->of_dma_data; struct dma_chan *dchan; diff --git a/drivers/dma/of-dma.c b/drivers/dma/of-dma.c index faae0bfe1109..febcb339c672 100644 --- a/drivers/dma/of-dma.c +++ b/drivers/dma/of-dma.c @@ -54,7 +54,8 @@ static struct of_dma *of_dma_find_controller(struct of_phandle_args *dma_spec) * to request channel from the real DMA controller. */ static struct dma_chan *of_dma_router_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, + struct device *slave) { struct dma_chan *chan; struct of_dma *ofdma_target; @@ -71,7 +72,8 @@ static struct dma_chan *of_dma_router_xlate(struct of_phandle_args *dma_spec, if (!ofdma_target) return NULL; - chan = ofdma_target->of_dma_xlate(&dma_spec_target, ofdma_target); + chan = ofdma_target->of_dma_xlate(&dma_spec_target, ofdma_target, + slave); if (chan) { chan->router = ofdma->dma_router; chan->route_data = route_data; @@ -103,7 +105,8 @@ static struct dma_chan *of_dma_router_xlate(struct of_phandle_args *dma_spec, */ int of_dma_controller_register(struct device_node *np, struct dma_chan *(*of_dma_xlate) - (struct of_phandle_args *, struct of_dma *), + (struct of_phandle_args *, struct of_dma *, + struct device *), void *data) { struct of_dma *ofdma; @@ -229,12 +232,14 @@ static int of_dma_match_channel(struct device_node *np, const char *name, /** * of_dma_request_slave_channel - Get the DMA slave channel + * @slave: device to get DMA request from * @np: device node to get DMA request from * @name: name of desired channel * * Returns pointer to appropriate DMA channel on success or an error pointer. */ -struct dma_chan *of_dma_request_slave_channel(struct device_node *np, +struct dma_chan *of_dma_request_slave_channel(struct device *slave, + struct device_node *np, const char *name) { struct of_phandle_args dma_spec; @@ -275,7 +280,7 @@ struct dma_chan *of_dma_request_slave_channel(struct device_node *np, ofdma = of_dma_find_controller(&dma_spec); if (ofdma) { - chan = ofdma->of_dma_xlate(&dma_spec, ofdma); + chan = ofdma->of_dma_xlate(&dma_spec, ofdma, slave); } else { ret_no_channel = -EPROBE_DEFER; chan = NULL; @@ -305,7 +310,7 @@ struct dma_chan *of_dma_request_slave_channel(struct device_node *np, * pointer to appropriate dma channel on success or NULL on error. */ struct dma_chan *of_dma_simple_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { int count = dma_spec->args_count; struct of_dma_filter_info *info = ofdma->of_dma_data; @@ -335,7 +340,7 @@ struct dma_chan *of_dma_simple_xlate(struct of_phandle_args *dma_spec, * Returns pointer to appropriate dma channel on success or NULL on error. */ struct dma_chan *of_dma_xlate_by_chan_id(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct dma_device *dev = ofdma->of_dma_data; struct dma_chan *chan, *candidate = NULL; diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index 78be12b45a45..b6b2cc912380 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -2076,7 +2076,8 @@ static void pl330_tasklet(unsigned long data) } static struct dma_chan *of_dma_pl330_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, + struct device *slave) { int count = dma_spec->args_count; struct pl330_dmac *pl330 = ofdma->of_dma_data; diff --git a/drivers/dma/pxa_dma.c b/drivers/dma/pxa_dma.c index b53fb618bbf6..434764b43d68 100644 --- a/drivers/dma/pxa_dma.c +++ b/drivers/dma/pxa_dma.c @@ -1336,7 +1336,7 @@ static int pxad_init_phys(struct platform_device *op, MODULE_DEVICE_TABLE(of, pxad_dt_ids); static struct dma_chan *pxad_dma_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct pxad_device *d = ofdma->of_dma_data; struct dma_chan *chan; diff --git a/drivers/dma/qcom/bam_dma.c b/drivers/dma/qcom/bam_dma.c index 03c4eb3fd314..7ff3075c0702 100644 --- a/drivers/dma/qcom/bam_dma.c +++ b/drivers/dma/qcom/bam_dma.c @@ -1049,7 +1049,7 @@ static void bam_dma_free_desc(struct virt_dma_desc *vd) } static struct dma_chan *bam_dma_xlate(struct of_phandle_args *dma_spec, - struct of_dma *of) + struct of_dma *of, struct device *slave) { struct bam_device *bdev = container_of(of->of_dma_data, struct bam_device, common); diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c index 4c357d475465..c450235ff51c 100644 --- a/drivers/dma/sh/rcar-dmac.c +++ b/drivers/dma/sh/rcar-dmac.c @@ -1560,7 +1560,7 @@ static bool rcar_dmac_chan_filter(struct dma_chan *chan, void *arg) } static struct dma_chan *rcar_dmac_of_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct rcar_dmac_chan *rchan; struct dma_chan *chan; diff --git a/drivers/dma/sh/shdma-of.c b/drivers/dma/sh/shdma-of.c index f999f9b0d314..9953be99627b 100644 --- a/drivers/dma/sh/shdma-of.c +++ b/drivers/dma/sh/shdma-of.c @@ -20,7 +20,7 @@ #define to_shdma_chan(c) container_of(c, struct shdma_chan, dma_chan) static struct dma_chan *shdma_of_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { u32 id = dma_spec->args[0]; dma_cap_mask_t mask; diff --git a/drivers/dma/sh/usb-dmac.c b/drivers/dma/sh/usb-dmac.c index 72c649713ace..0f06a9468df9 100644 --- a/drivers/dma/sh/usb-dmac.c +++ b/drivers/dma/sh/usb-dmac.c @@ -650,7 +650,7 @@ static bool usb_dmac_chan_filter(struct dma_chan *chan, void *arg) } static struct dma_chan *usb_dmac_of_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct dma_chan *chan; dma_cap_mask_t mask; diff --git a/drivers/dma/sirf-dma.c b/drivers/dma/sirf-dma.c index a0733ac3edb1..ed6f07b0d758 100644 --- a/drivers/dma/sirf-dma.c +++ b/drivers/dma/sirf-dma.c @@ -826,7 +826,7 @@ bool sirfsoc_dma_filter_id(struct dma_chan *chan, void *chan_id) BIT(DMA_SLAVE_BUSWIDTH_8_BYTES)) static struct dma_chan *of_dma_sirfsoc_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct sirfsoc_dma *sdma = ofdma->of_dma_data; unsigned int request = dma_spec->args[0]; diff --git a/drivers/dma/st_fdma.c b/drivers/dma/st_fdma.c index bfb79bd0c6de..6a92a6505419 100644 --- a/drivers/dma/st_fdma.c +++ b/drivers/dma/st_fdma.c @@ -167,7 +167,7 @@ static irqreturn_t st_fdma_irq_handler(int irq, void *dev_id) } static struct dma_chan *st_fdma_of_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct st_fdma_dev *fdev = ofdma->of_dma_data; struct dma_chan *chan; diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index a6620b671d1d..9fade9209d93 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -2334,7 +2334,7 @@ static void d40_set_prio_realtime(struct d40_chan *d40c) #define D40_DT_FLAGS_HIGH_PRIO(flags) ((flags >> 4) & 0x1) static struct dma_chan *d40_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct stedma40_chan_cfg cfg; dma_cap_mask_t cap; diff --git a/drivers/dma/stm32-dma.c b/drivers/dma/stm32-dma.c index 49f86cabcfec..495a4f5c5c26 100644 --- a/drivers/dma/stm32-dma.c +++ b/drivers/dma/stm32-dma.c @@ -980,7 +980,7 @@ static void stm32_dma_set_config(struct stm32_dma_chan *chan, } static struct dma_chan *stm32_dma_of_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct stm32_dma_device *dmadev = ofdma->of_dma_data; struct device *dev = dmadev->ddev.dev; diff --git a/drivers/dma/sun4i-dma.c b/drivers/dma/sun4i-dma.c index 57aa227bfadb..c1a076334abf 100644 --- a/drivers/dma/sun4i-dma.c +++ b/drivers/dma/sun4i-dma.c @@ -909,7 +909,7 @@ static int sun4i_dma_config(struct dma_chan *chan, } static struct dma_chan *sun4i_dma_of_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct sun4i_dma_dev *priv = ofdma->of_dma_data; struct sun4i_dma_vchan *vchan; diff --git a/drivers/dma/sun6i-dma.c b/drivers/dma/sun6i-dma.c index a2358780ab2c..240e4a95913a 100644 --- a/drivers/dma/sun6i-dma.c +++ b/drivers/dma/sun6i-dma.c @@ -930,7 +930,7 @@ static void sun6i_dma_free_chan_resources(struct dma_chan *chan) } static struct dma_chan *sun6i_dma_of_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct sun6i_dma_dev *sdev = ofdma->of_dma_data; struct sun6i_vchan *vchan; diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c index 3722b9d8d9fe..e0eb5813fcf5 100644 --- a/drivers/dma/tegra20-apb-dma.c +++ b/drivers/dma/tegra20-apb-dma.c @@ -1239,7 +1239,7 @@ static void tegra_dma_free_chan_resources(struct dma_chan *dc) } static struct dma_chan *tegra_dma_of_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct tegra_dma *tdma = ofdma->of_dma_data; struct dma_chan *chan; diff --git a/drivers/dma/tegra210-adma.c b/drivers/dma/tegra210-adma.c index b10cbaa82ff5..525af32132ac 100644 --- a/drivers/dma/tegra210-adma.c +++ b/drivers/dma/tegra210-adma.c @@ -605,7 +605,7 @@ static void tegra_adma_free_chan_resources(struct dma_chan *dc) } static struct dma_chan *tegra_dma_of_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct tegra_adma *tdma = ofdma->of_dma_data; struct tegra_adma_chan *tdc; diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c index 8288fe4d17c3..69cdfc39edb2 100644 --- a/drivers/dma/xilinx/xilinx_dma.c +++ b/drivers/dma/xilinx/xilinx_dma.c @@ -2461,7 +2461,7 @@ static int xilinx_dma_child_probe(struct xilinx_dma_device *xdev, * Return: DMA channel pointer on success and NULL on error */ static struct dma_chan *of_dma_xilinx_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct xilinx_dma_device *xdev = ofdma->of_dma_data; int chan_id = dma_spec->args[0]; diff --git a/drivers/dma/xilinx/zynqmp_dma.c b/drivers/dma/xilinx/zynqmp_dma.c index 6d221e5c72ee..6aa133c514f1 100644 --- a/drivers/dma/xilinx/zynqmp_dma.c +++ b/drivers/dma/xilinx/zynqmp_dma.c @@ -1040,7 +1040,7 @@ static int zynqmp_dma_chan_probe(struct zynqmp_dma_device *zdev, * Return: DMA channel pointer on success and NULL on error */ static struct dma_chan *of_zynqmp_dma_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct zynqmp_dma_device *zdev = ofdma->of_dma_data; diff --git a/drivers/dma/zx_dma.c b/drivers/dma/zx_dma.c index 42ff3e66c1e1..6e050dbe5f26 100644 --- a/drivers/dma/zx_dma.c +++ b/drivers/dma/zx_dma.c @@ -732,7 +732,7 @@ static void zx_dma_free_desc(struct virt_dma_desc *vd) MODULE_DEVICE_TABLE(of, zx6702_dma_dt_ids); static struct dma_chan *zx_of_dma_simple_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { struct zx_dma_dev *d = ofdma->of_dma_data; unsigned int request = dma_spec->args[0]; diff --git a/include/linux/of_dma.h b/include/linux/of_dma.h index b90d8ec57c1f..233558f91f93 100644 --- a/include/linux/of_dma.h +++ b/include/linux/of_dma.h @@ -22,7 +22,8 @@ struct of_dma { struct list_head of_dma_controllers; struct device_node *of_node; struct dma_chan *(*of_dma_xlate) - (struct of_phandle_args *, struct of_dma *); + (struct of_phandle_args *, struct of_dma *, + struct device *); void *(*of_dma_route_allocate) (struct of_phandle_args *, struct of_dma *); struct dma_router *dma_router; @@ -37,7 +38,7 @@ struct of_dma_filter_info { #ifdef CONFIG_DMA_OF extern int of_dma_controller_register(struct device_node *np, struct dma_chan *(*of_dma_xlate) - (struct of_phandle_args *, struct of_dma *), + (struct of_phandle_args *, struct of_dma *, struct device *), void *data); extern void of_dma_controller_free(struct device_node *np); @@ -47,17 +48,18 @@ extern int of_dma_router_register(struct device_node *np, struct dma_router *dma_router); #define of_dma_router_free of_dma_controller_free -extern struct dma_chan *of_dma_request_slave_channel(struct device_node *np, +extern struct dma_chan *of_dma_request_slave_channel(struct device *slave, + struct device_node *np, const char *name); extern struct dma_chan *of_dma_simple_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma); + struct of_dma *ofdma, struct device *slave); extern struct dma_chan *of_dma_xlate_by_chan_id(struct of_phandle_args *dma_spec, - struct of_dma *ofdma); + struct of_dma *ofdma, struct device *slave); #else static inline int of_dma_controller_register(struct device_node *np, struct dma_chan *(*of_dma_xlate) - (struct of_phandle_args *, struct of_dma *), + (struct of_phandle_args *, struct of_dma *, struct device *), void *data) { return -ENODEV; @@ -77,14 +79,15 @@ static inline int of_dma_router_register(struct device_node *np, #define of_dma_router_free of_dma_controller_free -static inline struct dma_chan *of_dma_request_slave_channel(struct device_node *np, +static inline struct dma_chan *of_dma_request_slave_channel(struct device *slave, + struct device_node *np, const char *name) { return ERR_PTR(-ENODEV); } static inline struct dma_chan *of_dma_simple_xlate(struct of_phandle_args *dma_spec, - struct of_dma *ofdma) + struct of_dma *ofdma, struct device *slave) { return NULL; } diff --git a/sound/soc/sh/rcar/dma.c b/sound/soc/sh/rcar/dma.c index 1f405c833867..a59855ddc160 100644 --- a/sound/soc/sh/rcar/dma.c +++ b/sound/soc/sh/rcar/dma.c @@ -302,7 +302,8 @@ static int rsnd_dmaen_start(struct rsnd_mod *mod, return 0; } -struct dma_chan *rsnd_dma_request_channel(struct device_node *of_node, +struct dma_chan *rsnd_dma_request_channel(struct device *slave, + struct device_node *of_node, struct rsnd_mod *mod, char *name) { struct dma_chan *chan = NULL; @@ -311,7 +312,7 @@ struct dma_chan *rsnd_dma_request_channel(struct device_node *of_node, for_each_child_of_node(of_node, np) { if (i == rsnd_mod_id(mod) && (!chan)) - chan = of_dma_request_slave_channel(np, name); + chan = of_dma_request_slave_channel(slave, np, name); i++; } diff --git a/sound/soc/sh/rcar/dvc.c b/sound/soc/sh/rcar/dvc.c index cf8f59cdd8d7..817f73071622 100644 --- a/sound/soc/sh/rcar/dvc.c +++ b/sound/soc/sh/rcar/dvc.c @@ -323,8 +323,9 @@ static struct dma_chan *rsnd_dvc_dma_req(struct rsnd_dai_stream *io, struct rsnd_mod *mod) { struct rsnd_priv *priv = rsnd_mod_to_priv(mod); + struct device *dev = rsnd_priv_to_dev(priv); - return rsnd_dma_request_channel(rsnd_dvc_of_node(priv), + return rsnd_dma_request_channel(dev, rsnd_dvc_of_node(priv), mod, "tx"); } diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h index 7410ec0174db..b108b0e41906 100644 --- a/sound/soc/sh/rcar/rsnd.h +++ b/sound/soc/sh/rcar/rsnd.h @@ -211,7 +211,8 @@ void rsnd_bset(struct rsnd_priv *priv, struct rsnd_mod *mod, enum rsnd_reg reg, int rsnd_dma_attach(struct rsnd_dai_stream *io, struct rsnd_mod *mod, struct rsnd_mod **dma_mod); int rsnd_dma_probe(struct rsnd_priv *priv); -struct dma_chan *rsnd_dma_request_channel(struct device_node *of_node, +struct dma_chan *rsnd_dma_request_channel(struct device *slave, + struct device_node *of_node, struct rsnd_mod *mod, char *name); /* diff --git a/sound/soc/sh/rcar/src.c b/sound/soc/sh/rcar/src.c index 3a8f65bd1bf9..4f446afb1c4a 100644 --- a/sound/soc/sh/rcar/src.c +++ b/sound/soc/sh/rcar/src.c @@ -85,9 +85,10 @@ static struct dma_chan *rsnd_src_dma_req(struct rsnd_dai_stream *io, struct rsnd_mod *mod) { struct rsnd_priv *priv = rsnd_mod_to_priv(mod); + struct device *dev = rsnd_priv_to_dev(priv); int is_play = rsnd_io_is_play(io); - return rsnd_dma_request_channel(rsnd_src_of_node(priv), + return rsnd_dma_request_channel(dev, rsnd_src_of_node(priv), mod, is_play ? "rx" : "tx"); } diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c index 411bda2387ad..d12d87119b7f 100644 --- a/sound/soc/sh/rcar/ssi.c +++ b/sound/soc/sh/rcar/ssi.c @@ -732,6 +732,7 @@ static struct dma_chan *rsnd_ssi_dma_req(struct rsnd_dai_stream *io, struct rsnd_mod *mod) { struct rsnd_priv *priv = rsnd_mod_to_priv(mod); + struct device *dev = rsnd_priv_to_dev(priv); int is_play = rsnd_io_is_play(io); char *name; @@ -740,7 +741,7 @@ static struct dma_chan *rsnd_ssi_dma_req(struct rsnd_dai_stream *io, else name = is_play ? "rx" : "tx"; - return rsnd_dma_request_channel(rsnd_ssi_of_node(priv), + return rsnd_dma_request_channel(dev, rsnd_ssi_of_node(priv), mod, name); } From patchwork Wed Jan 25 10:28:07 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marek Szyprowski X-Patchwork-Id: 92416 Delivered-To: patch@linaro.org Received: by 10.140.20.99 with SMTP id 90csp2141701qgi; Wed, 25 Jan 2017 02:28:36 -0800 (PST) X-Received: by 10.84.233.206 with SMTP id m14mr2537282pln.104.1485340116799; Wed, 25 Jan 2017 02:28:36 -0800 (PST) Return-Path: Received: from vger.kernel.org (vger.kernel.org. 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Wysocki" , Kuninori Morimoto , Mark Brown , Inki Dae Subject: [PATCH v7 3/4] dmaengine: pl330: Store pointer to slave device Date: Wed, 25 Jan 2017 11:28:07 +0100 Message-id: <1485340088-25481-4-git-send-email-m.szyprowski@samsung.com> X-Mailer: git-send-email 1.9.1 In-reply-to: <1485340088-25481-1-git-send-email-m.szyprowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAAzWSXUhTYRzGe3c+dqZNT3PVyzKhQReZswSDg1kURJ2irItAqdSmnqY0P9hU UoqWVOpmapPpqJVG2cdEtGnDZKabsvlF03Je+YGpxSbWxXIRuZHb0bvn4f09/4cHXgIR3MdE RF5BMaMokMrFeBhqtv91SkbuVKUdXlnZSU1N2jjUe30HRukWlnCqTefHKO18PUo5nZ1cyjPY CyjT4jRGfe014JT30RCg9M5PHKp9aJZLjY99wShHeyrlru1HT0TSnd4KnH5pcXNok7Eap2em LTjd9eou7Rt/jNLdrkqUru02AtprirnEuxKWnMPI80oZxaHj18Nym4eJoubwW89qqhEVaOOp AY+AZCL8UzfBZfUuODHXgatBGCEgWwGcf9KDscYL4AtVN2cr8dSq26ReA9ihDwDWqDjQ5dOj QQonE6B6VR2ihGQ/gH0fF5GgQUgVAsdsvlBjFHkG9vZ/w4IaJffDwAd7KM0naTi6tIyzfTFw xN4QYnjkWaj3D3GDhyBp50LtXNNGgNgwe6FpAGH5U3Ag0AFYHQU9ju7NddGwusq6uaEOwIoH B1mtB/DzKp/VR+GgYzLUhZARUGtuQtjzfFj1UMAiNOxqH0FZfRL63mm57HoDgHPj69x6EN0C thmBkClR5ssY5ZF4pTRfWVIgi88uzDeBjb8xFnCs9YBWe5INkAQQb+fXZ1WmCTBpqbIs3wYg gYiF/NO3q9IE/BxpWTmjKMxUlMgZpQ3sIVDxbr6lZSpVQMqkxcxNhiliFFuvHIInUoGsQE/i 8oIlZW1aEh4hvGAw/yvTWN+0GBsx8eiMa+ac6MDb5zZ3ctwNTaRIE2/X7mhMz8F++X9r+OcX zKOLnQaJSWL9Ua0vXS+ymJdq5J5yaR+V9H3M5Y+9+tNhns04ljk1fK/B5t132ZOdTl/Lcxfo DLIUU4ZuJA6/qBkVo8pcaUIsolBK/wP98VRxFwMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrIIsWRmVeSWpSXmKPExsVy+t/xa7rsdR0RBn9WmFtcuXiIyWLjjPWs FlMfPmGzWD31L6vFpPsTWCzOn9/AbvHq8C5Gi02Pr7FaXN41h83ic+8RRosZ5/cxWaw9cpfd 4szpS6wWx9eGW7zs28/iwO+x4XMTm8fiPS+ZPDat6mTzuHNtD5vH5iX1Ht/OTGTx2HK1ncWj b8sqRo/Pm+QCOKPcbDJSE1NSixRS85LzUzLz0m2VQkPcdC2UFPISc1NtlSJ0fUOClBTKEnNK gTwjAzTg4BzgHqykb5fgljH/BEfBfO6KuT2dzA2Mqzm7GDk5JARMJGYfnMoGYYtJXLi3Hsjm 4hASWMIoMWnXSWaQhJBAE5PEtKelIDabgKFE19susCIRgf2MEh9uXQfrZhZoYpZY9xTMFhZw l9i1/xEriM0ioCrxb+sxFhCbV8BD4tSTp1Db5CROHpsMVsMp4Ckx4+8R9i5GDqBlHhIbt1tP YORdwMiwilEktbQ4Nz232FCvODG3uDQvXS85P3cTIzB6th37uXkH46WNwYcYBTgYlXh4JyS1 RwixJpYVV+YeYpTgYFYS4XWr6YgQ4k1JrKxKLcqPLyrNSS0+xGgKdNNEZinR5HxgZOeVxBua GJpbGhoZW1iYGxkpifOWfLgSLiSQnliSmp2aWpBaBNPHxMEp1cAoZqGx98btzcd7g3dYrt+z 5Um6Q9yGE9utxLJsdjJGVv3PaapnvvDKT+6O1OTH7+6/4Hr1nivX2LDvlvnr5868m75n1bsJ rVeefO6Xnb+dVXvks3XbL9kmbpth9rivap7E8p9PFoX8DUrYqHi5lO2uT6Lf7mtJUW2JkyKW rxD6feO69zeFrx9fK7EUZyQaajEXFScCADh+ks20AgAA X-MTR: 20000000000000000@CPGS X-CMS-MailID: 20170125102824eucas1p25744330b6608c8d6e1a994b4894827bd X-Msg-Generator: CA X-Sender-IP: 182.198.249.179 X-Local-Sender: =?utf-8?q?Marek_Szyprowski=1BSRPOL-Kernel_=28TP=29=1B?= =?utf-8?b?7IK87ISx7KCE7J6QG1NlbmlvciBTb2Z0d2FyZSBFbmdpbmVlcg==?= X-Global-Sender: =?utf-8?q?Marek_Szyprowski=1BSRPOL-Kernel_=28TP=29=1BSam?= =?utf-8?q?sung_Electronics=1BSenior_Software_Engineer?= X-Sender-Code: =?utf-8?q?C10=1BEHQ=1BC10CD02CD027392?= CMS-TYPE: 201P X-HopCount: 7 X-CMS-RootMailID: 20170125102824eucas1p25744330b6608c8d6e1a994b4894827bd X-RootMTR: 20170125102824eucas1p25744330b6608c8d6e1a994b4894827bd References: <1485340088-25481-1-git-send-email-m.szyprowski@samsung.com> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Store the pointer to slave device, which requested our channel. It will be later used to implement runtime PM of PL330 DMA controller. Although DMA channels might be requested many times, each DMA peripheral channel is physically dedicated only for specific hardware, so there should be only one slave device for each channel. Signed-off-by: Marek Szyprowski Reviewed-by: Krzysztof Kozlowski Reviewed-by: Ulf Hansson Acked-by: Arnd Bergmann --- drivers/dma/pl330.c | 9 +++++++++ 1 file changed, 9 insertions(+) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-pm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index b6b2cc912380..c77a3494659c 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -450,6 +450,7 @@ struct dma_pl330_chan { /* for runtime pm tracking */ bool active; + struct device *slave; }; struct pl330_dmac { @@ -2093,6 +2094,14 @@ static struct dma_chan *of_dma_pl330_xlate(struct of_phandle_args *dma_spec, if (chan_id >= pl330->num_peripherals) return NULL; + if (!pl330->peripherals[chan_id].slave) { + pl330->peripherals[chan_id].slave = slave; + } else if (pl330->peripherals[chan_id].slave != slave) { + dev_err(pl330->ddma.dev, + "Can't use same channel with multiple slave devices!\n"); + return NULL; + } + return dma_get_slave_channel(&pl330->peripherals[chan_id].chan); } From patchwork Wed Jan 25 10:28:08 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marek Szyprowski X-Patchwork-Id: 92418 Delivered-To: patch@linaro.org Received: by 10.140.20.99 with SMTP id 90csp2141894qgi; Wed, 25 Jan 2017 02:29:16 -0800 (PST) X-Received: by 10.98.20.81 with SMTP id 78mr45592586pfu.171.1485340156285; Wed, 25 Jan 2017 02:29:16 -0800 (PST) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id u62si22950001pgd.232.2017.01.25.02.29.16; Wed, 25 Jan 2017 02:29:16 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-samsung-soc-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-samsung-soc-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-samsung-soc-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751801AbdAYK3P (ORCPT + 4 others); Wed, 25 Jan 2017 05:29:15 -0500 Received: from mailout1.w1.samsung.com ([210.118.77.11]:45614 "EHLO mailout1.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751800AbdAYK2a (ORCPT ); Wed, 25 Jan 2017 05:28:30 -0500 Received: from eucas1p2.samsung.com (unknown [182.198.249.207]) by mailout1.w1.samsung.com (Oracle Communications Messaging Server 7.0.5.31.0 64bit (built May 5 2014)) with ESMTP id <0OKB00HDVZRE8U90@mailout1.w1.samsung.com>; Wed, 25 Jan 2017 10:28:27 +0000 (GMT) Received: from eusmges4.samsung.com (unknown [203.254.199.244]) by eucas1p1.samsung.com (KnoxPortal) with ESMTP id 20170125102826eucas1p112b2a5eda751642f967d87af6fc56198~c-PUVfqzM2537225372eucas1p1Q; Wed, 25 Jan 2017 10:28:26 +0000 (GMT) Received: from eucas1p2.samsung.com ( [182.198.249.207]) by eusmges4.samsung.com (EUCPMTA) with SMTP id 5E.84.28517.ACD78885; Wed, 25 Jan 2017 10:28:26 +0000 (GMT) Received: from eusmgms2.samsung.com (unknown [182.198.249.180]) by eucas1p2.samsung.com (KnoxPortal) with ESMTP id 20170125102825eucas1p22f4f6dbe744d778f0e1b53b6b26da5de~c-PTbDi7m0775107751eucas1p2V; Wed, 25 Jan 2017 10:28:25 +0000 (GMT) X-AuditID: cbfec7f4-f79716d000006f65-c0-58887dcac463 Received: from eusync4.samsung.com ( [203.254.199.214]) by eusmgms2.samsung.com (EUCPMTA) with SMTP id 45.E2.10233.6CD78885; Wed, 25 Jan 2017 10:28:22 +0000 (GMT) Received: from AMDC2765.digital.local ([106.116.147.25]) by eusync4.samsung.com (Oracle Communications Messaging Server 7.0.5.31.0 64bit (built May 5 2014)) with ESMTPA id <0OKB00K87ZR4QX40@eusync4.samsung.com>; Wed, 25 Jan 2017 10:28:25 +0000 (GMT) From: Marek Szyprowski To: linux-samsung-soc@vger.kernel.org, dmaengine@vger.kernel.org, alsa-devel@alsa-project.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Marek Szyprowski , Krzysztof Kozlowski , Bartlomiej Zolnierkiewicz , Vinod Koul , Ulf Hansson , "Rafael J. Wysocki" , Kuninori Morimoto , Mark Brown , Inki Dae Subject: [PATCH v7 4/4] dmaengine: pl330: Don't require irq-safe runtime PM Date: Wed, 25 Jan 2017 11:28:08 +0100 Message-id: <1485340088-25481-5-git-send-email-m.szyprowski@samsung.com> X-Mailer: git-send-email 1.9.1 In-reply-to: <1485340088-25481-1-git-send-email-m.szyprowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmplleLIzCtJLcpLzFFi42LZduzned1TtR0RBpvXi1tcuXiIyWLjjPWs FlMfPmGzWD31L6vFpPsTWCzOn9/AbvHq8C5Gi02Pr7FaXN41h83ic+8RRosZ5/cxWaw9cpfd 4szpS6wWx9eGW7zs28/iwO+x4XMTm8fiPS+ZPDat6mTzuHNtD5vH5iX1Ht/OTGTx2HK1ncWj b8sqRo/Pm+QCOKO4bFJSczLLUov07RK4MnbtX8NUcDijYs/HBWwNjEfDuhg5OSQETCQer13D DmGLSVy4t56ti5GLQ0hgKaPE8lu7oZzPjBJ7195lhunY3w2TWMYo8bF1DZTTwCSx5ewUVpAq NgFDia63XWAJEYH9QO07HzODOMwCDcwSpw99A9soLOAtsXjSAzCbRUBVYvbDHjYQm1fAQ+Li vq2sEPvkJE4emwxmcwp4Ssz4e4QdZJCEwDF2iaWnZzB2MXIAObISmw5A3ecicat7PlSvsMSr 41ugvpORuDy5mwXC7meUaGrVhrBnMEqce8sLYVtLHD5+EayXWYBPYtK26cwQ43klOtqEIEo8 JJZf/AK1ylFiWccadojv5zBKLDy9j20Co8wCRoZVjCKppcW56anFJnrFibnFpXnpesn5uZsY gYnj9L/jX3YwLj5mdYhRgINRiYf3RUp7hBBrYllxZe4hRgkOZiURXreajggh3pTEyqrUovz4 otKc1OJDjNIcLErivHsWXAkXEkhPLEnNTk0tSC2CyTJxcEo1MMadzNtgnLP9zyn7xbknav8t se9MMFJPluMUvnsyMvHVinjuBP7JL+U0Obf1fbwrNteHM/nOKoW7BmL/ReuLFT1t784N2Jpe dWHl79LTH6vCd2t8EMlirV1XmLLG+tODu4s81hsJfuFXfZdwktltf6KM1rePAdI6OayJVmf0 b7Fsk/qy+PBGXyWW4oxEQy3mouJEAPb2UF0YAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrMIsWRmVeSWpSXmKPExsVy+t/xa7rHajsiDG7M1rS4cvEQk8XGGetZ LaY+fMJmsXrqX1aLSfcnsFicP7+B3eLV4V2MFpseX2O1uLxrDpvF594jjBYzzu9jslh75C67 xZnTl1gtjq8Nt3jZt5/Fgd9jw+cmNo/Fe14yeWxa1cnmcefaHjaPzUvqPb6dmcjiseVqO4tH 35ZVjB6fN8kFcEa52WSkJqakFimk5iXnp2TmpdsqhYa46VooKeQl5qbaKkXo+oYEKSmUJeaU AnlGBmjAwTnAPVhJ3y7BLWPX/jVMBYczKvZ8XMDWwHg0rIuRk0NCwERif/duNghbTOLCvfVA NheHkMASRok5/y+zQDhNTBIH/jxnB6liEzCU6HrbBVYlIrCfUeLDretg7cwCTcwS656C2cIC 3hKLJz0Aa2ARUJWY/bAHLM4r4CFxcd9WVoh1chInj00GszkFPCVm/D0CVM8BtM1DYuN26wmM vAsYGVYxiqSWFuem5xYb6RUn5haX5qXrJefnbmIERtC2Yz+37GDsehd8iFGAg1GJh3dCUnuE EGtiWXFl7iFGCQ5mJRFet5qOCCHelMTKqtSi/Pii0pzU4kOMpkA3TWSWEk3OB0Z3Xkm8oYmh uaWhkbGFhbmRkZI479QPV8KFBNITS1KzU1MLUotg+pg4OKUaGM863Wv1mvCAe7f5ldklW6/P qhAX+yos8Jbh+n/VaUG8B971caz8IKv7XKZB60Lo4YmHH+YETL40/b/y/L8TWiZK1B+9+Txl RYblU76DoifkVCY/aJe1sTJ2rhQXlDYu2Vi7IahkTubzX6f2m2Uyv+5e2lT8xuzqTJMPidVf 2D5fsJx1+nrMzH9KLMUZiYZazEXFiQDdwREGtgIAAA== X-MTR: 20000000000000000@CPGS X-CMS-MailID: 20170125102825eucas1p22f4f6dbe744d778f0e1b53b6b26da5de X-Msg-Generator: CA X-Sender-IP: 182.198.249.180 X-Local-Sender: =?utf-8?q?Marek_Szyprowski=1BSRPOL-Kernel_=28TP=29=1B?= =?utf-8?b?7IK87ISx7KCE7J6QG1NlbmlvciBTb2Z0d2FyZSBFbmdpbmVlcg==?= X-Global-Sender: =?utf-8?q?Marek_Szyprowski=1BSRPOL-Kernel_=28TP=29=1BSam?= =?utf-8?q?sung_Electronics=1BSenior_Software_Engineer?= X-Sender-Code: =?utf-8?q?C10=1BEHQ=1BC10CD02CD027392?= CMS-TYPE: 201P X-HopCount: 7 X-CMS-RootMailID: 20170125102825eucas1p22f4f6dbe744d778f0e1b53b6b26da5de X-RootMTR: 20170125102825eucas1p22f4f6dbe744d778f0e1b53b6b26da5de References: <1485340088-25481-1-git-send-email-m.szyprowski@samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org This patch replaces irq-safe runtime PM with non-irq-safe version based on the new approach. Existing, irq-safe runtime PM implementation for PL330 was not bringing much benefits of its own - only clocks were enabled/disabled. Another limitation of irq-safe runtime PM is a fact, that it may prevent the generic PM domain (genpd) from being powered off, particularly in cases when the genpd doesn't have the GENPD_FLAG_IRQ_SAFE set. Till now non-irq-safe runtime PM implementation was only possible by calling pm_runtime_get/put functions from alloc/free_chan_resources. All other DMA engine API functions cannot be called from a context, which permits sleeping. Such implementation, in practice would result in keeping DMA controller's device active almost all the time, because most of the slave device drivers (DMA engine clients) acquire DMA channel in their probe() function and released it during driver removal. This patch provides a new, different approach. It is based on an observation that there can be only one slave device using each DMA channel. PL330 hardware always has dedicated channels for each peripheral device. Using recently introduced device dependencies (links) infrastructure one can ensure proper runtime PM state of PL330 DMA controller basing on the runtime PM state of the slave device. In this approach in pl330_alloc_chan_resources() function a new dependency is being created between PL330 DMA controller device (as a supplier) and given slave device (as a consumer). This way PL330 DMA controller device runtime active counter is increased when the slave device is resumed and decreased the same time when given slave device is put to suspend. This way it has been ensured to keep PL330 DMA controller runtime active if there is an active used of any of its DMA channels. Slave device pointer is initially stored in per-channel data in of_dma_xlate callback. This is similar to what has been already implemented in Exynos IOMMU driver in commit 2f5f44f205cc95 ("iommu/exynos: Use device dependency links to control runtime pm"). If slave device doesn't implement runtime PM or keeps device runtime active all the time, then PL330 DMA controller will be runtime active all the time when channel is being allocated. If one requests memory-to-memory channel, runtime active counter is increased unconditionally. This might be a drawback of this approach, but PL330 is not really used for memory-to-memory operations due to poor performance in such operations compared to the CPU. Removal of irq-safe runtime PM is based on the revert of the following commits: 1. commit 5c9e6c2b2ba3 "dmaengine: pl330: fix runtime pm support" 2. commit 81cc6edc0870 "dmaengine: pl330: Fix hang on dmaengine_terminate_all on certain boards" 3. commit ae43b3289186 "ARM: 8202/1: dmaengine: pl330: Add runtime Power Management support v12" Introducing non-irq-safe runtime power management finally allows to turn off audio power domain on Exynos5 SoCs. Signed-off-by: Marek Szyprowski Reviewed-by: Krzysztof Kozlowski Reviewed-by: Ulf Hansson Acked-by: Arnd Bergmann --- drivers/dma/pl330.c | 166 +++++++++++++++++++++------------------------------- 1 file changed, 66 insertions(+), 100 deletions(-) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index c77a3494659c..dff7228198f6 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -268,9 +268,6 @@ enum pl330_byteswap { #define NR_DEFAULT_DESC 16 -/* Delay for runtime PM autosuspend, ms */ -#define PL330_AUTOSUSPEND_DELAY 20 - /* Populated by the PL330 core driver for DMA API driver's info */ struct pl330_config { u32 periph_id; @@ -449,8 +446,8 @@ struct dma_pl330_chan { bool cyclic; /* for runtime pm tracking */ - bool active; struct device *slave; + struct device_link *slave_link; }; struct pl330_dmac { @@ -2008,7 +2005,6 @@ static void pl330_tasklet(unsigned long data) struct dma_pl330_chan *pch = (struct dma_pl330_chan *)data; struct dma_pl330_desc *desc, *_dt; unsigned long flags; - bool power_down = false; spin_lock_irqsave(&pch->lock, flags); @@ -2023,18 +2019,10 @@ static void pl330_tasklet(unsigned long data) /* Try to submit a req imm. next to the last completed cookie */ fill_queue(pch); - if (list_empty(&pch->work_list)) { - spin_lock(&pch->thread->dmac->lock); - _stop(pch->thread); - spin_unlock(&pch->thread->dmac->lock); - power_down = true; - pch->active = false; - } else { - /* Make sure the PL330 Channel thread is active */ - spin_lock(&pch->thread->dmac->lock); - _start(pch->thread); - spin_unlock(&pch->thread->dmac->lock); - } + /* Make sure the PL330 Channel thread is active */ + spin_lock(&pch->thread->dmac->lock); + _start(pch->thread); + spin_unlock(&pch->thread->dmac->lock); while (!list_empty(&pch->completed_list)) { struct dmaengine_desc_callback cb; @@ -2047,13 +2035,6 @@ static void pl330_tasklet(unsigned long data) if (pch->cyclic) { desc->status = PREP; list_move_tail(&desc->node, &pch->work_list); - if (power_down) { - pch->active = true; - spin_lock(&pch->thread->dmac->lock); - _start(pch->thread); - spin_unlock(&pch->thread->dmac->lock); - power_down = false; - } } else { desc->status = FREE; list_move_tail(&desc->node, &pch->dmac->desc_pool); @@ -2068,12 +2049,6 @@ static void pl330_tasklet(unsigned long data) } } spin_unlock_irqrestore(&pch->lock, flags); - - /* If work list empty, power down */ - if (power_down) { - pm_runtime_mark_last_busy(pch->dmac->ddma.dev); - pm_runtime_put_autosuspend(pch->dmac->ddma.dev); - } } static struct dma_chan *of_dma_pl330_xlate(struct of_phandle_args *dma_spec, @@ -2105,11 +2080,63 @@ static struct dma_chan *of_dma_pl330_xlate(struct of_phandle_args *dma_spec, return dma_get_slave_channel(&pl330->peripherals[chan_id].chan); } +static int pl330_add_slave_pm_link(struct pl330_dmac *pl330, + struct dma_pl330_chan *pch) +{ + int i; + + /* No slave device means memory-to-memory channels */ + if (!pch->slave) + return pm_runtime_get_sync(pl330->ddma.dev); + + /* + * No additional locking is needed, {alloc,free}_chan_resources + * are called under dma_list_mutex in dmaengine core + */ + for (i = 0; i < pl330->num_peripherals; i++) { + if (pl330->peripherals[i].slave == pch->slave && + pl330->peripherals[i].slave_link) { + pch->slave_link = pl330->peripherals[i].slave_link; + return 0; + } + } + + pch->slave_link = device_link_add(pch->slave, pl330->ddma.dev, + DL_FLAG_PM_RUNTIME | DL_FLAG_RPM_ACTIVE); + if (!pch->slave_link) + return -ENODEV; + + return 0; +} + +static void pl330_del_slave_pm_link(struct pl330_dmac *pl330, + struct dma_pl330_chan *pch) +{ + struct device_link *link = pch->slave_link; + int i, count = 0; + + if (!pch->slave) + pm_runtime_put(pl330->ddma.dev); + + for (i = 0; i < pl330->num_peripherals; i++) + if (pl330->peripherals[i].slave_link == link) + count++; + + pch->slave_link = NULL; + if (count == 1) + device_link_del(link); +} + static int pl330_alloc_chan_resources(struct dma_chan *chan) { struct dma_pl330_chan *pch = to_pchan(chan); struct pl330_dmac *pl330 = pch->dmac; unsigned long flags; + int ret; + + ret = pl330_add_slave_pm_link(pl330, pch); + if (ret < 0) + return ret; spin_lock_irqsave(&pl330->lock, flags); @@ -2119,6 +2146,7 @@ static int pl330_alloc_chan_resources(struct dma_chan *chan) pch->thread = pl330_request_channel(pl330); if (!pch->thread) { spin_unlock_irqrestore(&pl330->lock, flags); + pl330_del_slave_pm_link(pl330, pch); return -ENOMEM; } @@ -2160,9 +2188,7 @@ static int pl330_terminate_all(struct dma_chan *chan) unsigned long flags; struct pl330_dmac *pl330 = pch->dmac; LIST_HEAD(list); - bool power_down = false; - pm_runtime_get_sync(pl330->ddma.dev); spin_lock_irqsave(&pch->lock, flags); spin_lock(&pl330->lock); _stop(pch->thread); @@ -2171,8 +2197,6 @@ static int pl330_terminate_all(struct dma_chan *chan) pch->thread->req[0].desc = NULL; pch->thread->req[1].desc = NULL; pch->thread->req_running = -1; - power_down = pch->active; - pch->active = false; /* Mark all desc done */ list_for_each_entry(desc, &pch->submitted_list, node) { @@ -2189,10 +2213,6 @@ static int pl330_terminate_all(struct dma_chan *chan) list_splice_tail_init(&pch->work_list, &pl330->desc_pool); list_splice_tail_init(&pch->completed_list, &pl330->desc_pool); spin_unlock_irqrestore(&pch->lock, flags); - pm_runtime_mark_last_busy(pl330->ddma.dev); - if (power_down) - pm_runtime_put_autosuspend(pl330->ddma.dev); - pm_runtime_put_autosuspend(pl330->ddma.dev); return 0; } @@ -2210,7 +2230,6 @@ static int pl330_pause(struct dma_chan *chan) struct pl330_dmac *pl330 = pch->dmac; unsigned long flags; - pm_runtime_get_sync(pl330->ddma.dev); spin_lock_irqsave(&pch->lock, flags); spin_lock(&pl330->lock); @@ -2218,8 +2237,6 @@ static int pl330_pause(struct dma_chan *chan) spin_unlock(&pl330->lock); spin_unlock_irqrestore(&pch->lock, flags); - pm_runtime_mark_last_busy(pl330->ddma.dev); - pm_runtime_put_autosuspend(pl330->ddma.dev); return 0; } @@ -2232,7 +2249,6 @@ static void pl330_free_chan_resources(struct dma_chan *chan) tasklet_kill(&pch->task); - pm_runtime_get_sync(pch->dmac->ddma.dev); spin_lock_irqsave(&pl330->lock, flags); pl330_release_channel(pch->thread); @@ -2242,19 +2258,17 @@ static void pl330_free_chan_resources(struct dma_chan *chan) list_splice_tail_init(&pch->work_list, &pch->dmac->desc_pool); spin_unlock_irqrestore(&pl330->lock, flags); - pm_runtime_mark_last_busy(pch->dmac->ddma.dev); - pm_runtime_put_autosuspend(pch->dmac->ddma.dev); + + pl330_del_slave_pm_link(pl330, pch); } static int pl330_get_current_xferred_count(struct dma_pl330_chan *pch, struct dma_pl330_desc *desc) { struct pl330_thread *thrd = pch->thread; - struct pl330_dmac *pl330 = pch->dmac; void __iomem *regs = thrd->dmac->base; u32 val, addr; - pm_runtime_get_sync(pl330->ddma.dev); val = addr = 0; if (desc->rqcfg.src_inc) { val = readl(regs + SA(thrd->id)); @@ -2263,8 +2277,6 @@ static int pl330_get_current_xferred_count(struct dma_pl330_chan *pch, val = readl(regs + DA(thrd->id)); addr = desc->px.dst_addr; } - pm_runtime_mark_last_busy(pch->dmac->ddma.dev); - pm_runtime_put_autosuspend(pl330->ddma.dev); /* If DMAMOV hasn't finished yet, SAR/DAR can be zero */ if (!val) @@ -2350,16 +2362,6 @@ static void pl330_issue_pending(struct dma_chan *chan) unsigned long flags; spin_lock_irqsave(&pch->lock, flags); - if (list_empty(&pch->work_list)) { - /* - * Warn on nothing pending. Empty submitted_list may - * break our pm_runtime usage counter as it is - * updated on work_list emptiness status. - */ - WARN_ON(list_empty(&pch->submitted_list)); - pch->active = true; - pm_runtime_get_sync(pch->dmac->ddma.dev); - } list_splice_tail_init(&pch->submitted_list, &pch->work_list); spin_unlock_irqrestore(&pch->lock, flags); @@ -2787,44 +2789,12 @@ static irqreturn_t pl330_irq_handler(int irq, void *data) BIT(DMA_SLAVE_BUSWIDTH_8_BYTES) /* - * Runtime PM callbacks are provided by amba/bus.c driver. - * - * It is assumed here that IRQ safe runtime PM is chosen in probe and amba - * bus driver will only disable/enable the clock in runtime PM callbacks. + * Runtime PM callbacks are provided by amba/bus.c driver, system sleep + * suspend/resume is implemented by generic helpers, which use existing + * runtime PM callbacks. */ -static int __maybe_unused pl330_suspend(struct device *dev) -{ - struct amba_device *pcdev = to_amba_device(dev); - - pm_runtime_disable(dev); - - if (!pm_runtime_status_suspended(dev)) { - /* amba did not disable the clock */ - amba_pclk_disable(pcdev); - } - amba_pclk_unprepare(pcdev); - - return 0; -} - -static int __maybe_unused pl330_resume(struct device *dev) -{ - struct amba_device *pcdev = to_amba_device(dev); - int ret; - - ret = amba_pclk_prepare(pcdev); - if (ret) - return ret; - - if (!pm_runtime_status_suspended(dev)) - ret = amba_pclk_enable(pcdev); - - pm_runtime_enable(dev); - - return ret; -} - -static SIMPLE_DEV_PM_OPS(pl330_pm, pl330_suspend, pl330_resume); +static SIMPLE_DEV_PM_OPS(pl330_pm, pm_runtime_force_suspend, + pm_runtime_force_resume); static int pl330_probe(struct amba_device *adev, const struct amba_id *id) @@ -2977,11 +2947,7 @@ static int __maybe_unused pl330_resume(struct device *dev) pcfg->data_buf_dep, pcfg->data_bus_width / 8, pcfg->num_chan, pcfg->num_peri, pcfg->num_events); - pm_runtime_irq_safe(&adev->dev); - pm_runtime_use_autosuspend(&adev->dev); - pm_runtime_set_autosuspend_delay(&adev->dev, PL330_AUTOSUSPEND_DELAY); - pm_runtime_mark_last_busy(&adev->dev); - pm_runtime_put_autosuspend(&adev->dev); + pm_runtime_put(&adev->dev); return 0; probe_err3: