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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 v4 05/14] i2c: tegra: Avoid tegra_i2c_init_dma() for Tegra210 vi i2c
Date: Thu, 23 Jul 2020 16:51:03 -0700
Message-ID: <1595548272-9809-6-git-send-email-skomatineni@nvidia.com> (raw)
In-Reply-To: <1595548272-9809-1-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 1bf3666..00d3e4d 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 index

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-23 23:50 [RFC PATCH v4 00/14] Support for Tegra video capture from external sensor Sowjanya Komatineni
2020-07-23 23:50 ` [RFC PATCH v4 01/14] i2c: tegra: Don't mark VI I2C as IRQ safe runtime PM Sowjanya Komatineni
2020-07-26 23:30   ` Dmitry Osipenko
2020-07-23 23:51 ` [RFC PATCH v4 03/14] i2c: tegra: Fix the error path in tegra_i2c_runtime_resume Sowjanya Komatineni
2020-07-26 23:41   ` Dmitry Osipenko
2020-07-23 23:51 ` [RFC PATCH v4 04/14] i2c: tegra: Fix runtime resume to re-init VI I2C Sowjanya Komatineni
2020-07-26 23:53   ` Dmitry Osipenko
2020-07-27 20:58     ` Sowjanya Komatineni
2020-07-23 23:51 ` Sowjanya Komatineni [this message]
2020-07-26 23:57   ` [RFC PATCH v4 05/14] i2c: tegra: Avoid tegra_i2c_init_dma() for Tegra210 vi i2c Dmitry Osipenko
2020-07-23 23:51 ` [RFC PATCH v4 06/14] media: tegra-video: Fix channel format alignment Sowjanya Komatineni
2020-07-23 23:51 ` [RFC PATCH v4 07/14] media: tegra-video: Enable TPG based on kernel config Sowjanya Komatineni
     [not found] ` <1595548272-9809-1-git-send-email-skomatineni-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2020-07-23 23:51   ` [RFC PATCH v4 02/14] i2c: tegra: Remove NULL pointer check before clk_enable/disable/prepare/unprepare Sowjanya Komatineni
2020-07-23 23:51   ` [RFC PATCH v4 08/14] media: tegra-video: Update format lookup to offset based Sowjanya Komatineni
2020-07-23 23:51   ` [RFC PATCH v4 09/14] dt-bindings: tegra: Update VI and CSI bindings with port info Sowjanya Komatineni
2020-07-23 23:51   ` [RFC PATCH v4 10/14] media: tegra-video: Add support for external sensor capture Sowjanya Komatineni
2020-07-23 23:51   ` [RFC PATCH v4 12/14] gpu: host1x: mipi: Keep MIPI clock enabled till calibration is done Sowjanya Komatineni
2020-07-27  0:10     ` Dmitry Osipenko
2020-07-23 23:51   ` [RFC PATCH v4 14/14] media: tegra-video: Compute settle times based on the clock rate Sowjanya Komatineni
2020-07-23 23:51 ` [RFC PATCH v4 11/14] media: tegra-video: Add support for selection ioctl ops Sowjanya Komatineni
2020-07-23 23:51 ` [RFC PATCH v4 13/14] media: tegra-video: Add CSI MIPI pads calibration Sowjanya Komatineni
2020-07-24  9:43 ` [RFC PATCH v4 00/14] Support for Tegra video capture from external sensor Hans Verkuil
2020-07-24 19:16   ` Wolfram Sang
2020-07-27  0:25   ` Dmitry Osipenko

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