linux-kernel - [PATCH 4.19 067/148] gpu: host1x: mipi: Update tegra_mipi

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Message-ID: <20240324235012.1356413-68-sashal@kernel.org>
Date: Sun, 24 Mar 2024 19:48:51 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Sowjanya Komatineni <skomatineni@...dia.com>,
	Thierry Reding <treding@...dia.com>,
	Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 067/148] gpu: host1x: mipi: Update tegra_mipi_request() to be node based

From: Sowjanya Komatineni <skomatineni@...dia.com>

[ Upstream commit 767598d447aa46411289c5808b0e45e20a1823b4 ]

Tegra CSI driver need a separate MIPI device for each channel as
calibration of corresponding MIPI pads for each channel should
happen independently.

So, this patch updates tegra_mipi_request() API to add a device_node
pointer argument to allow creating mipi device for specific device
node rather than a device.

Signed-off-by: Sowjanya Komatineni <skomatineni@...dia.com>
Signed-off-by: Thierry Reding <treding@...dia.com>
Stable-dep-of: 830c1ded3563 ("drm/tegra: dsi: Fix some error handling paths in tegra_dsi_probe()")
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/tegra/dsi.c | 2 +-
 drivers/gpu/host1x/mipi.c   | 4 ++--
 include/linux/host1x.h      | 3 ++-
 3 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c
index 70cc960d3ff58..7033ab28f7716 100644
--- a/drivers/gpu/drm/tegra/dsi.c
+++ b/drivers/gpu/drm/tegra/dsi.c
@@ -1543,7 +1543,7 @@ static int tegra_dsi_probe(struct platform_device *pdev)
 	if (IS_ERR(dsi->regs))
 		return PTR_ERR(dsi->regs);
 
-	dsi->mipi = tegra_mipi_request(&pdev->dev);
+	dsi->mipi = tegra_mipi_request(&pdev->dev, pdev->dev.of_node);
 	if (IS_ERR(dsi->mipi))
 		return PTR_ERR(dsi->mipi);
 
diff --git a/drivers/gpu/host1x/mipi.c b/drivers/gpu/host1x/mipi.c
index e00809d996a29..762d349ad00f1 100644
--- a/drivers/gpu/host1x/mipi.c
+++ b/drivers/gpu/host1x/mipi.c
@@ -206,9 +206,9 @@ static int tegra_mipi_power_down(struct tegra_mipi *mipi)
 	return 0;
 }
 
-struct tegra_mipi_device *tegra_mipi_request(struct device *device)
+struct tegra_mipi_device *tegra_mipi_request(struct device *device,
+					     struct device_node *np)
 {
-	struct device_node *np = device->of_node;
 	struct tegra_mipi_device *dev;
 	struct of_phandle_args args;
 	int err;
diff --git a/include/linux/host1x.h b/include/linux/host1x.h
index aef6e2f738027..903c0ec204442 100644
--- a/include/linux/host1x.h
+++ b/include/linux/host1x.h
@@ -327,7 +327,8 @@ int host1x_client_unregister(struct host1x_client *client);
 
 struct tegra_mipi_device;
 
-struct tegra_mipi_device *tegra_mipi_request(struct device *device);
+struct tegra_mipi_device *tegra_mipi_request(struct device *device,
+					     struct device_node *np);
 void tegra_mipi_free(struct tegra_mipi_device *device);
 int tegra_mipi_enable(struct tegra_mipi_device *device);
 int tegra_mipi_disable(struct tegra_mipi_device *device);
-- 
2.43.0