diff options
| author | Dave Airlie <airlied@redhat.com> | 2020-09-23 08:28:10 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2020-09-23 08:37:12 +1000 |
| commit | 3e6f73b876ea1ec5d4be6f589f6a00127444ab78 (patch) | |
| tree | 25e42f82939505abe7fbe4933e2971d1bd9e50b6 /drivers/gpu/drm/tegra/output.c | |
| parent | c03156d7d9fee5381e4dce5662c35cd4c95b9ef1 (diff) | |
| parent | d9f980ebcd01d90a2a76ea2383c925abf9223cab (diff) | |
Merge tag 'drm/tegra/for-5.10-rc1' of ssh://git.freedesktop.org/git/tegra/linux into drm-next
drm/tegra: Changes for v5.10-rc1
This is a handful of patches that add bridge support for Tegra devices
and fix a couple of minor issues.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thierry Reding <thierry.reding@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200921121245.3953659-1-thierry.reding@gmail.com
Diffstat (limited to 'drivers/gpu/drm/tegra/output.c')
| -rw-r--r-- | drivers/gpu/drm/tegra/output.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/drivers/gpu/drm/tegra/output.c b/drivers/gpu/drm/tegra/output.c index a3adb9e4debf..5a4fd0dbf4cf 100644 --- a/drivers/gpu/drm/tegra/output.c +++ b/drivers/gpu/drm/tegra/output.c @@ -5,6 +5,7 @@ */ #include <drm/drm_atomic_helper.h> +#include <drm/drm_of.h> #include <drm/drm_panel.h> #include <drm/drm_simple_kms_helper.h> @@ -99,27 +100,38 @@ int tegra_output_probe(struct tegra_output *output) if (!output->of_node) output->of_node = output->dev->of_node; + err = drm_of_find_panel_or_bridge(output->of_node, -1, -1, + &output->panel, &output->bridge); + if (err && err != -ENODEV) + return err; + panel = of_parse_phandle(output->of_node, "nvidia,panel", 0); if (panel) { + /* + * Don't mix nvidia,panel phandle with the graph in a + * device-tree. + */ + WARN_ON(output->panel || output->bridge); + output->panel = of_drm_find_panel(panel); + of_node_put(panel); + if (IS_ERR(output->panel)) return PTR_ERR(output->panel); - - of_node_put(panel); } output->edid = of_get_property(output->of_node, "nvidia,edid", &size); ddc = of_parse_phandle(output->of_node, "nvidia,ddc-i2c-bus", 0); if (ddc) { - output->ddc = of_find_i2c_adapter_by_node(ddc); + output->ddc = of_get_i2c_adapter_by_node(ddc); + of_node_put(ddc); + if (!output->ddc) { err = -EPROBE_DEFER; of_node_put(ddc); return err; } - - of_node_put(ddc); } output->hpd_gpio = devm_gpiod_get_from_of_node(output->dev, @@ -173,7 +185,7 @@ void tegra_output_remove(struct tegra_output *output) free_irq(output->hpd_irq, output); if (output->ddc) - put_device(&output->ddc->dev); + i2c_put_adapter(output->ddc); } int tegra_output_init(struct drm_device *drm, struct tegra_output *output) |