gpu: host1x: mipi: Update tegra_mipi_request() to be node based

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>
Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c
index 38beab9..3c09e29 100644 (file)
--- 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 (file)
--- 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 (file)
--- 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);