[RFC PATCH v3 14/18] gpu: host1x: mipi: Update tegra_mipi_request() to be node based

[Sowjanya Komatineni <skomatineni@nvidia.com>]

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@nvidia.com>
---
 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 38beab9..3c09e29 100644
--- a/drivers/gpu/drm/tegra/dsi.c
+++ b/drivers/gpu/drm/tegra/dsi.c
@@ -1618,7 +1618,7 @@ 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 e00809d..762d349 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 a3a568b..9e67841 100644
--- a/include/linux/host1x.h
+++ b/include/linux/host1x.h
@@ -328,7 +328,8 @@ int host1x_client_resume(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);
-- 
2.7.4