From patchwork Wed Sep 30 09:14:01 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Ujfalusi X-Patchwork-Id: 11808543 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 8E1DE92C for ; Wed, 30 Sep 2020 09:15:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6C21D2076E for ; Wed, 30 Sep 2020 09:15:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="QHBZHH6w" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729009AbgI3JP2 (ORCPT ); Wed, 30 Sep 2020 05:15:28 -0400 Received: from fllv0015.ext.ti.com ([198.47.19.141]:35110 "EHLO fllv0015.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728983AbgI3JO0 (ORCPT ); Wed, 30 Sep 2020 05:14:26 -0400 Received: from fllv0034.itg.ti.com ([10.64.40.246]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id 08U9EKCw034993; 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Wed, 30 Sep 2020 04:14:20 -0500 Received: from feketebors.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0039.itg.ti.com (8.15.2/8.15.2) with ESMTP id 08U9DuJe116385; Wed, 30 Sep 2020 04:14:17 -0500 From: Peter Ujfalusi To: , , , , CC: , , , , , , Subject: [PATCH 07/18] dmaengine: ti: k3-udma-glue: Add function to get device pointer for DMA API Date: Wed, 30 Sep 2020 12:14:01 +0300 Message-ID: <20200930091412.8020-8-peter.ujfalusi@ti.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200930091412.8020-1-peter.ujfalusi@ti.com> References: <20200930091412.8020-1-peter.ujfalusi@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org Glue layer users should use the device of the DMA for DMA mapping and allocations as it is the DMA which accesses to descriptors and buffers, not the clients Signed-off-by: Peter Ujfalusi --- drivers/dma/ti/k3-udma-glue.c | 14 ++++++++++++++ drivers/dma/ti/k3-udma-private.c | 6 ++++++ drivers/dma/ti/k3-udma.h | 1 + include/linux/dma/k3-udma-glue.h | 4 ++++ 4 files changed, 25 insertions(+) diff --git a/drivers/dma/ti/k3-udma-glue.c b/drivers/dma/ti/k3-udma-glue.c index a367584f0d7b..a53bc4707ae8 100644 --- a/drivers/dma/ti/k3-udma-glue.c +++ b/drivers/dma/ti/k3-udma-glue.c @@ -487,6 +487,13 @@ int k3_udma_glue_tx_get_irq(struct k3_udma_glue_tx_channel *tx_chn) } EXPORT_SYMBOL_GPL(k3_udma_glue_tx_get_irq); +struct device * + k3_udma_glue_tx_get_dma_device(struct k3_udma_glue_tx_channel *tx_chn) +{ + return xudma_get_device(tx_chn->common.udmax); +} +EXPORT_SYMBOL_GPL(k3_udma_glue_tx_get_dma_device); + static int k3_udma_glue_cfg_rx_chn(struct k3_udma_glue_rx_channel *rx_chn) { const struct udma_tisci_rm *tisci_rm = rx_chn->common.tisci_rm; @@ -1189,3 +1196,10 @@ int k3_udma_glue_rx_get_irq(struct k3_udma_glue_rx_channel *rx_chn, return flow->virq; } EXPORT_SYMBOL_GPL(k3_udma_glue_rx_get_irq); + +struct device * + k3_udma_glue_rx_get_dma_device(struct k3_udma_glue_rx_channel *rx_chn) +{ + return xudma_get_device(rx_chn->common.udmax); +} +EXPORT_SYMBOL_GPL(k3_udma_glue_rx_get_dma_device); diff --git a/drivers/dma/ti/k3-udma-private.c b/drivers/dma/ti/k3-udma-private.c index aa24e554f7b4..8ff7a264be03 100644 --- a/drivers/dma/ti/k3-udma-private.c +++ b/drivers/dma/ti/k3-udma-private.c @@ -50,6 +50,12 @@ struct udma_dev *of_xudma_dev_get(struct device_node *np, const char *property) } EXPORT_SYMBOL(of_xudma_dev_get); +struct device *xudma_get_device(struct udma_dev *ud) +{ + return ud->dev; +} +EXPORT_SYMBOL(xudma_get_device); + u32 xudma_dev_get_psil_base(struct udma_dev *ud) { return ud->psil_base; diff --git a/drivers/dma/ti/k3-udma.h b/drivers/dma/ti/k3-udma.h index 09c4529e013d..d1cace0cb43b 100644 --- a/drivers/dma/ti/k3-udma.h +++ b/drivers/dma/ti/k3-udma.h @@ -112,6 +112,7 @@ int xudma_navss_psil_unpair(struct udma_dev *ud, u32 src_thread, u32 dst_thread); struct udma_dev *of_xudma_dev_get(struct device_node *np, const char *property); +struct device *xudma_get_device(struct udma_dev *ud); void xudma_dev_put(struct udma_dev *ud); u32 xudma_dev_get_psil_base(struct udma_dev *ud); struct udma_tisci_rm *xudma_dev_get_tisci_rm(struct udma_dev *ud); diff --git a/include/linux/dma/k3-udma-glue.h b/include/linux/dma/k3-udma-glue.h index 5eb34ad973a7..d7c12f31377c 100644 --- a/include/linux/dma/k3-udma-glue.h +++ b/include/linux/dma/k3-udma-glue.h @@ -41,6 +41,8 @@ void k3_udma_glue_reset_tx_chn(struct k3_udma_glue_tx_channel *tx_chn, u32 k3_udma_glue_tx_get_hdesc_size(struct k3_udma_glue_tx_channel *tx_chn); u32 k3_udma_glue_tx_get_txcq_id(struct k3_udma_glue_tx_channel *tx_chn); int k3_udma_glue_tx_get_irq(struct k3_udma_glue_tx_channel *tx_chn); +struct device * + k3_udma_glue_tx_get_dma_device(struct k3_udma_glue_tx_channel *tx_chn); enum { K3_UDMA_GLUE_SRC_TAG_LO_KEEP = 0, @@ -130,5 +132,7 @@ int k3_udma_glue_rx_flow_enable(struct k3_udma_glue_rx_channel *rx_chn, u32 flow_idx); int k3_udma_glue_rx_flow_disable(struct k3_udma_glue_rx_channel *rx_chn, u32 flow_idx); +struct device * + k3_udma_glue_rx_get_dma_device(struct k3_udma_glue_rx_channel *rx_chn); #endif /* K3_UDMA_GLUE_H_ */