From: Andrea della Porta <andrea.porta@suse.com> To: Vinod Koul <vkoul@kernel.org>, Rob Herring <robh+dt@kernel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, Conor Dooley <conor+dt@kernel.org>, Florian Fainelli <florian.fainelli@broadcom.com>, Ray Jui <rjui@broadcom.com>, Scott Branden <sbranden@broadcom.com>, Broadcom internal kernel review list <bcm-kernel-feedback-list@broadcom.com>, Saenz Julienne <nsaenz@kernel.org>, dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, dave.stevenson@raspberrypi.com Cc: Phil Elwell <phil@raspberrypi.org>, Maxime Ripard <maxime@cerno.tech>, Stefan Wahren <stefan.wahren@i2se.com>, Dom Cobley <popcornmix@gmail.com>, Andrea della Porta <andrea.porta@suse.com> Subject: [PATCH v2 06/15] dmaengine: bcm2835: Support common dma-channel-mask Date: Wed, 13 Mar 2024 15:08:31 +0100 [thread overview] Message-ID: <33415530388855ba8964c1f32dd126cb173e191d.1710226514.git.andrea.porta@suse.com> (raw) In-Reply-To: <cover.1710226514.git.andrea.porta@suse.com> Nowadays there is a generic property for dma-channel-mask in the DMA controller binding. So prefer this one instead of the old vendor specific one. Print a warning in case the old one is used. Btw use the result of of_property_read_u32() as return code in error case. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Andrea della Porta <andrea.porta@suse.com> --- drivers/dma/bcm2835-dma.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-) diff --git a/drivers/dma/bcm2835-dma.c b/drivers/dma/bcm2835-dma.c index 6b8e7461efaf..88aaf7769864 100644 --- a/drivers/dma/bcm2835-dma.c +++ b/drivers/dma/bcm2835-dma.c @@ -986,12 +986,19 @@ static int bcm2835_dma_probe(struct platform_device *pdev) } /* Request DMA channel mask from device tree */ - if (of_property_read_u32(pdev->dev.of_node, - "brcm,dma-channel-mask", - &chans_available)) { - dev_err(&pdev->dev, "Failed to get channel mask\n"); - rc = -EINVAL; - goto err_no_dma; + rc = of_property_read_u32(pdev->dev.of_node, "dma-channel-mask", + &chans_available); + + if (rc) { + /* Try deprecated property */ + if (of_property_read_u32(pdev->dev.of_node, + "brcm,dma-channel-mask", + &chans_available)) { + dev_err(&pdev->dev, "Failed to get channel mask\n"); + goto err_no_dma; + } + + dev_warn(&pdev->dev, "Please update DT blob\n"); } /* get irqs for each channel that we support */ -- 2.35.3
WARNING: multiple messages have this Message-ID (diff)
From: Andrea della Porta <andrea.porta@suse.com> To: Vinod Koul <vkoul@kernel.org>, Rob Herring <robh+dt@kernel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, Conor Dooley <conor+dt@kernel.org>, Florian Fainelli <florian.fainelli@broadcom.com>, Ray Jui <rjui@broadcom.com>, Scott Branden <sbranden@broadcom.com>, Broadcom internal kernel review list <bcm-kernel-feedback-list@broadcom.com>, Saenz Julienne <nsaenz@kernel.org>, dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, dave.stevenson@raspberrypi.com Cc: Phil Elwell <phil@raspberrypi.org>, Maxime Ripard <maxime@cerno.tech>, Stefan Wahren <stefan.wahren@i2se.com>, Dom Cobley <popcornmix@gmail.com>, Andrea della Porta <andrea.porta@suse.com> Subject: [PATCH v2 06/15] dmaengine: bcm2835: Support common dma-channel-mask Date: Wed, 13 Mar 2024 15:08:31 +0100 [thread overview] Message-ID: <33415530388855ba8964c1f32dd126cb173e191d.1710226514.git.andrea.porta@suse.com> (raw) In-Reply-To: <cover.1710226514.git.andrea.porta@suse.com> Nowadays there is a generic property for dma-channel-mask in the DMA controller binding. So prefer this one instead of the old vendor specific one. Print a warning in case the old one is used. Btw use the result of of_property_read_u32() as return code in error case. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Andrea della Porta <andrea.porta@suse.com> --- drivers/dma/bcm2835-dma.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-) diff --git a/drivers/dma/bcm2835-dma.c b/drivers/dma/bcm2835-dma.c index 6b8e7461efaf..88aaf7769864 100644 --- a/drivers/dma/bcm2835-dma.c +++ b/drivers/dma/bcm2835-dma.c @@ -986,12 +986,19 @@ static int bcm2835_dma_probe(struct platform_device *pdev) } /* Request DMA channel mask from device tree */ - if (of_property_read_u32(pdev->dev.of_node, - "brcm,dma-channel-mask", - &chans_available)) { - dev_err(&pdev->dev, "Failed to get channel mask\n"); - rc = -EINVAL; - goto err_no_dma; + rc = of_property_read_u32(pdev->dev.of_node, "dma-channel-mask", + &chans_available); + + if (rc) { + /* Try deprecated property */ + if (of_property_read_u32(pdev->dev.of_node, + "brcm,dma-channel-mask", + &chans_available)) { + dev_err(&pdev->dev, "Failed to get channel mask\n"); + goto err_no_dma; + } + + dev_warn(&pdev->dev, "Please update DT blob\n"); } /* get irqs for each channel that we support */ -- 2.35.3 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2024-03-13 14:08 UTC|newest] Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-03-13 14:08 [PATCH v2 00/15] dmaengine: bcm2835: add BCM2711 40-bit DMA support Andrea della Porta 2024-03-13 14:08 ` Andrea della Porta 2024-03-12 17:16 ` Dave Stevenson 2024-03-12 17:16 ` Dave Stevenson 2024-03-13 14:33 ` Andrea della Porta 2024-03-13 14:33 ` Andrea della Porta 2024-03-13 14:08 ` [PATCH v2 01/15] dmaengine: bcm2835: Fix several spellos Andrea della Porta 2024-03-13 14:08 ` Andrea della Porta 2024-03-13 15:00 ` Florian Fainelli 2024-03-13 15:00 ` Florian Fainelli 2024-03-13 15:26 ` Andrea della Porta 2024-03-13 15:26 ` Andrea della Porta 2024-03-13 16:38 ` Florian Fainelli 2024-03-13 16:38 ` Florian Fainelli 2024-03-13 16:49 ` Andrea della Porta 2024-03-13 16:49 ` Andrea della Porta 2024-03-13 17:14 ` Florian Fainelli 2024-03-13 17:14 ` Florian Fainelli 2024-03-13 14:08 ` [PATCH v2 02/15] dmaengine: bcm2835: Add support for per-channel flags Andrea della Porta 2024-03-13 14:08 ` Andrea della Porta 2024-03-17 12:55 ` Stefan Wahren 2024-03-17 12:55 ` Stefan Wahren 2024-03-13 14:08 ` [PATCH v2 03/15] dmaengine: bcm2835: Add NO_WAIT_RESP, DMA_WIDE_SOURCE and DMA_WIDE_DEST flag Andrea della Porta 2024-03-13 14:08 ` Andrea della Porta 2024-03-13 14:08 ` [PATCH v2 04/15] dmaengine: bcm2835: Support dma flags for multi-beat burst Andrea della Porta 2024-03-13 14:08 ` Andrea della Porta 2024-03-13 14:08 ` [PATCH v2 05/15] dmaengine: bcm2835: Fixes for dma_abort Andrea della Porta 2024-03-13 14:08 ` Andrea della Porta 2024-03-13 14:08 ` Andrea della Porta [this message] 2024-03-13 14:08 ` [PATCH v2 06/15] dmaengine: bcm2835: Support common dma-channel-mask Andrea della Porta 2024-03-13 14:08 ` [PATCH v2 07/15] dmaengine: bcm2835: move CB info generation into separate function Andrea della Porta 2024-03-13 14:08 ` Andrea della Porta 2024-03-13 14:08 ` [PATCH v2 08/15] dmaengine: bcm2835: move CB final extra info generation into function Andrea della Porta 2024-03-13 14:08 ` Andrea della Porta 2024-03-13 14:08 ` [PATCH v2 09/15] dmaengine: bcm2835: make address increment platform independent Andrea della Porta 2024-03-13 14:08 ` Andrea della Porta 2024-03-13 14:08 ` [PATCH v2 10/15] dmaengine: bcm2385: drop info parameters Andrea della Porta 2024-03-13 14:08 ` Andrea della Porta 2024-03-13 14:08 ` [PATCH v2 11/15] dmaengine: bcm2835: pass dma_chan to generic functions Andrea della Porta 2024-03-13 14:08 ` Andrea della Porta 2024-03-13 14:08 ` [PATCH v2 12/15] dmaengine: bcm2835: introduce multi platform support Andrea della Porta 2024-03-13 14:08 ` Andrea della Porta 2024-03-12 17:05 ` Dave Stevenson 2024-03-12 17:05 ` Dave Stevenson 2024-03-13 14:49 ` Andrea della Porta 2024-03-13 14:49 ` Andrea della Porta 2024-03-13 14:08 ` [PATCH v2 13/15] dt-bindings: dma: Added bcm2711-dma Andrea della Porta 2024-03-13 14:08 ` Andrea della Porta 2024-03-12 16:17 ` Krzysztof Kozlowski 2024-03-12 16:17 ` Krzysztof Kozlowski 2024-03-13 15:16 ` Andrea della Porta 2024-03-13 15:16 ` Andrea della Porta 2024-03-13 14:08 ` [PATCH v2 14/15] dmaengine: bcm2835: Add BCM2711 40-bit DMA support Andrea della Porta 2024-03-13 14:08 ` Andrea della Porta 2024-03-17 12:38 ` Stefan Wahren 2024-03-17 12:38 ` Stefan Wahren 2024-03-13 14:08 ` [PATCH v2 15/15] ARM: dts: bcm2711: add bcm2711-dma node Andrea della Porta 2024-03-13 14:08 ` Andrea della Porta 2024-04-14 6:26 ` Krzysztof Kozlowski 2024-04-14 6:26 ` Krzysztof Kozlowski 2024-04-29 14:13 ` Andrea della Porta 2024-04-29 14:13 ` Andrea della Porta
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