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From: Sowjanya Komatineni <skomatineni@nvidia.com>
To: <skomatineni@nvidia.com>, <thierry.reding@gmail.com>,
	<jonathanh@nvidia.com>, <frankc@nvidia.com>, <hverkuil@xs4all.nl>,
	<sakari.ailus@iki.fi>, <robh+dt@kernel.org>,
	<helen.koike@collabora.com>
Cc: <digetx@gmail.com>, <sboyd@kernel.org>,
	<gregkh@linuxfoundation.org>, <linux-media@vger.kernel.org>,
	<devicetree@vger.kernel.org>, <linux-tegra@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>, <linux-i2c@vger.kernel.org>
Subject: [RFC PATCH v1 06/18] i2c: tegra: Avoid tegra_i2c_init_dma() for Tegra210 vi i2c
Date: Tue, 9 Jun 2020 23:02:28 -0700	[thread overview]
Message-ID: <1591768960-31648-7-git-send-email-skomatineni@nvidia.com> (raw)
In-Reply-To: <1591768960-31648-1-git-send-email-skomatineni@nvidia.com>

VI I2C is on host1x bus so APB DMA can't be used for Tegra210 VI
I2C and there are no tx and rx dma channels for VI I2C.

So, avoid attempt of requesting DMA channels.

Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
---
 drivers/i2c/busses/i2c-tegra.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index 650240d..ed99dfe 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -421,7 +421,7 @@ static int tegra_i2c_init_dma(struct tegra_i2c_dev *i2c_dev)
 	dma_addr_t dma_phys;
 	int err;
 
-	if (!i2c_dev->hw->has_apb_dma)
+	if (!i2c_dev->hw->has_apb_dma || i2c_dev->is_vi)
 		return 0;
 
 	if (!IS_ENABLED(CONFIG_TEGRA20_APB_DMA)) {
-- 
2.7.4


  parent reply	other threads:[~2020-06-10  6:04 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-10  6:02 [RFC PATCH v1 00/18] Support for Tegra video capture from external sensor Sowjanya Komatineni
2020-06-10  6:02 ` [RFC PATCH v1 01/18] dt-bindings: i2c: tegra: Document Tegra210 VI I2C clocks and power-domains Sowjanya Komatineni
2020-06-10  6:02 ` [RFC PATCH v1 02/18] arm64: tegra: Add missing clocks and power-domains to Tegra210 VI I2C Sowjanya Komatineni
2020-06-10  6:02 ` [RFC PATCH v1 03/18] i2c: tegra: Don't mark VI I2C as IRQ safe runtime PM Sowjanya Komatineni
2020-06-10  6:02 ` [RFC PATCH v1 04/18] i2c: tegra: Fix the error path in tegra_i2c_runtime_resume Sowjanya Komatineni
2020-06-10  6:02 ` [RFC PATCH v1 05/18] i2c: tegra: Fix runtime resume to re-init VI I2C Sowjanya Komatineni
2020-06-10 13:14   ` Dmitry Osipenko
2020-06-10 16:58     ` Sowjanya Komatineni
2020-06-10  6:02 ` Sowjanya Komatineni [this message]
2020-06-10  6:02 ` [RFC PATCH v1 07/18] media: tegra-video: Fix channel format alignment Sowjanya Komatineni
2020-06-10  6:02 ` [RFC PATCH v1 08/18] media: tegra-video: Enable TPG based on kernel config Sowjanya Komatineni
2020-06-10  6:02 ` [RFC PATCH v1 09/18] media: tegra-video: Update format lookup to offset based Sowjanya Komatineni
2020-06-10  6:02 ` [RFC PATCH v1 10/18] dt-bindings: tegra: Document VI and CSI port nodes Sowjanya Komatineni
2020-06-10 11:23   ` Sakari Ailus
2020-06-10 15:15     ` Sowjanya Komatineni
2020-06-10 21:11       ` Sowjanya Komatineni
2020-06-17 22:14   ` Rob Herring
2020-06-18 10:50     ` Thierry Reding
2020-06-10  6:02 ` [RFC PATCH v1 11/18] media: tegra-video: Add support for external sensor capture Sowjanya Komatineni
2020-06-10  6:02 ` [RFC PATCH v1 12/18] media: tegra-video: Add support for selection ioctl ops Sowjanya Komatineni
2020-06-10  6:02 ` [RFC PATCH v1 13/18] gpu: host1x: mipi: Add of_tegra_mipi_request() API Sowjanya Komatineni
2020-06-10 13:33   ` Dmitry Osipenko
2020-06-10 17:00     ` Sowjanya Komatineni
2020-06-10  6:02 ` [RFC PATCH v1 14/18] gpu: host1x: mipi: Split tegra_mipi_calibrate and tegra_mipi_wait Sowjanya Komatineni
2020-06-10  6:02 ` [RFC PATCH v1 15/18] media: tegra-video: Add CSI MIPI pads calibration Sowjanya Komatineni
2020-06-10  6:02 ` [RFC PATCH v1 16/18] media: tegra-video: Compute settle times based on the clock rate Sowjanya Komatineni
2020-06-10  6:02 ` [RFC PATCH v1 17/18] arm64: tegra: jetson-tx1: Add camera supplies Sowjanya Komatineni
2020-06-10  6:02 ` [RFC PATCH v1 18/18] arm64: tegra: Enable Tegra VI CSI support for Jetson Nano Sowjanya Komatineni

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