diff options
| author | Jonathan Marek <jonathan@marek.ca> | 2018-12-04 10:16:58 -0500 |
|---|---|---|
| committer | Rob Clark <robdclark@gmail.com> | 2018-12-11 13:07:11 -0500 |
| commit | e6f6d63ed14c20528aa6df05a8f0707c183c6ba3 (patch) | |
| tree | 4c96d94c754ecd1b484d787c57886f262eca96b5 /drivers/gpu/drm/msm/adreno/adreno_device.c | |
| parent | fb42b5354d71b09d3dcfcf4e38b1e98b277a0fc8 (diff) | |
drm/msm: add headless gpu device for imx5
This patch allows using drm/msm without qcom display hardware. It adds a
amd,imageon compatible, which is used instead of qcom,adreno, but does
not require a top level msm node.
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/msm/adreno/adreno_device.c')
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/adreno_device.c | 35 |
1 files changed, 33 insertions, 2 deletions
diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c index 473433f574f9..714ed6505e47 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_device.c +++ b/drivers/gpu/drm/msm/adreno/adreno_device.c @@ -271,7 +271,8 @@ static int find_chipid(struct device *dev, struct adreno_rev *rev) if (ret == 0) { unsigned int r, patch; - if (sscanf(compat, "qcom,adreno-%u.%u", &r, &patch) == 2) { + if (sscanf(compat, "qcom,adreno-%u.%u", &r, &patch) == 2 || + sscanf(compat, "amd,imageon-%u.%u", &r, &patch) == 2) { rev->core = r / 100; r %= 100; rev->major = r / 10; @@ -359,9 +360,37 @@ static const struct component_ops a3xx_ops = { .unbind = adreno_unbind, }; +static void adreno_device_register_headless(void) +{ + /* on imx5, we don't have a top-level mdp/dpu node + * this creates a dummy node for the driver for that case + */ + struct platform_device_info dummy_info = { + .parent = NULL, + .name = "msm", + .id = -1, + .res = NULL, + .num_res = 0, + .data = NULL, + .size_data = 0, + .dma_mask = ~0, + }; + platform_device_register_full(&dummy_info); +} + static int adreno_probe(struct platform_device *pdev) { - return component_add(&pdev->dev, &a3xx_ops); + + int ret; + + ret = component_add(&pdev->dev, &a3xx_ops); + if (ret) + return ret; + + if (of_device_is_compatible(pdev->dev.of_node, "amd,imageon")) + adreno_device_register_headless(); + + return 0; } static int adreno_remove(struct platform_device *pdev) @@ -373,6 +402,8 @@ static int adreno_remove(struct platform_device *pdev) static const struct of_device_id dt_match[] = { { .compatible = "qcom,adreno" }, { .compatible = "qcom,adreno-3xx" }, + /* for compatibility with imx5 gpu: */ + { .compatible = "amd,imageon" }, /* for backwards compat w/ downstream kgsl DT files: */ { .compatible = "qcom,kgsl-3d0" }, {} |