Add new functions for the probe/remove API, the bind/unbind API and
resume/suspend calls. Move everything exynos drm specific into separate
functions, which can easily be moved to other files.
Also split struct exynos_dsi into a generic and a platform specific
struct.
Signed-off-by: Michael Tretter <m.tretter@xxxxxxxxxxxxxx>
---
v2:
- new patch
---
drivers/gpu/drm/exynos/exynos_drm_dsi.c | 114 +++++++++++++++++-------
1 file changed, 82 insertions(+), 32 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
index b9216785b2d7..ad70f5ce81ad 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@@ -265,7 +265,6 @@ struct exynos_dsi_driver_data {
};
struct exynos_dsi {
- struct drm_encoder encoder;
struct drm_bridge bridge;
struct mipi_dsi_host dsi_host;
struct drm_connector connector;
@@ -419,6 +418,11 @@ enum reg_value_idx {
PHYTIMING_HS_TRAIL
};
+struct exynos_dsi_pltfm {
+ struct exynos_dsi *dsi;
+ struct drm_encoder encoder;
+};
+
static const unsigned int reg_values[] = {
[RESET_TYPE] = DSIM_SWRST,
[PLL_TIMER] = 500,
@@ -476,7 +480,7 @@ static const unsigned int exynos5433_reg_values[] = {
static int __exynos_dsi_host_attach(struct device *dev,
struct mipi_dsi_device *device)
{
- struct exynos_dsi *dsi = dev_get_drvdata(dev);
+ struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
struct drm_device *drm = dsi->encoder.dev;
struct exynos_drm_crtc *crtc;
@@ -494,7 +498,7 @@ static int __exynos_dsi_host_attach(struct device *dev,
static int __exynos_dsi_host_detach(struct device *dev,
struct mipi_dsi_device *device)
{
- struct exynos_dsi *dsi = dev_get_drvdata(dev);
+ struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
struct drm_device *drm = dsi->encoder.dev;
if (drm->mode_config.poll_enabled)
@@ -505,7 +509,7 @@ static int __exynos_dsi_host_detach(struct device *dev,
static void __exynos_dsi_te_handler(struct device *dev)
{
- struct exynos_dsi *dsi = dev_get_drvdata(dev);
+ struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
exynos_drm_crtc_te_handler(dsi->encoder.crtc);
}
@@ -1804,10 +1808,12 @@ static int exynos_dsi_parse_dt(struct exynos_dsi *dsi)
return 0;
}
-static int exynos_dsi_bind(struct device *dev, struct device *master,
- void *data)
+static int exynos_dsi_bind(struct exynos_dsi *dsi, struct drm_encoder *encoder);
+static void exynos_dsi_unbind(struct exynos_dsi *dsi);
+
+static int exynos_dsi_pltfm_bind(struct device *dev, struct device *master, void *data)
{
- struct exynos_dsi *dsi = dev_get_drvdata(dev);
+ struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
struct drm_encoder *encoder = &dsi->encoder;
struct drm_device *drm_dev = data;
struct device_node *in_bridge_node;
@@ -1828,7 +1834,7 @@ static int exynos_dsi_bind(struct device *dev, struct device *master,
of_node_put(in_bridge_node);
}
- ret = drm_bridge_attach(encoder, &dsi->bridge, in_bridge, 0);
+ ret = exynos_dsi_bind(dsi->dsi, encoder);
if (ret)
goto err;
@@ -1839,20 +1845,20 @@ static int exynos_dsi_bind(struct device *dev, struct device *master,
return ret;
}
-static void exynos_dsi_unbind(struct device *dev, struct device *master,
- void *data)
+static void exynos_dsi_pltfm_unbind(struct device *dev, struct device *master,
+ void *data)
{
- struct exynos_dsi *dsi = dev_get_drvdata(dev);
+ struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
struct drm_encoder *encoder = &dsi->encoder;
- exynos_dsi_disable(dsi);
+ exynos_dsi_unbind(dsi->dsi);
drm_encoder_cleanup(encoder);
}
-static const struct component_ops exynos_dsi_component_ops = {
- .bind = exynos_dsi_bind,
- .unbind = exynos_dsi_unbind,
+static const struct component_ops exynos_dsi_pltfm_component_ops = {
+ .bind = exynos_dsi_pltfm_bind,
+ .unbind = exynos_dsi_pltfm_unbind,
};
static struct exynos_dsi *__exynos_dsi_probe(struct platform_device *pdev)
@@ -1963,20 +1969,52 @@ static void __exynos_dsi_remove(struct exynos_dsi *dsi)
mipi_dsi_host_unregister(&dsi->dsi_host);
}
-static int exynos_dsi_probe(struct platform_device *pdev)
+/*
+ * Probe/remove API, used from platforms based on the DRM bridge API.
+ */
+static struct exynos_dsi *exynos_dsi_probe(struct platform_device *pdev)
{
- struct exynos_dsi *dsi;
+ return __exynos_dsi_probe(pdev);
+}
+
+static void exynos_dsi_remove(struct exynos_dsi *dsi)
+{
+ return __exynos_dsi_remove(dsi);
+}
+
+/*
+ * Bind/unbind API, used from platforms based on the component framework.
+ */
+static int exynos_dsi_bind(struct exynos_dsi *dsi, struct drm_encoder *encoder)
+{
+ struct drm_bridge *previous = drm_bridge_chain_get_first_bridge(encoder);
+
+ return drm_bridge_attach(encoder, &dsi->bridge, previous, 0);
+}
+
+static void exynos_dsi_unbind(struct exynos_dsi *dsi)
+{
+ exynos_dsi_disable(dsi);
+}
+
+static int exynos_dsi_pltfm_probe(struct platform_device *pdev)
+{
+ struct exynos_dsi_pltfm *dsi;
struct device *dev = &pdev->dev;
int ret;
- dsi = __exynos_dsi_probe(pdev);
- if (IS_ERR(dsi))
- return PTR_ERR(dsi);
+ dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL);
+ if (!dsi)
+ return -ENOMEM;
platform_set_drvdata(pdev, dsi);
+ dsi->dsi = exynos_dsi_probe(pdev);
+ if (IS_ERR(dsi->dsi))
+ return PTR_ERR(dsi->dsi);
+
pm_runtime_enable(dev);
- ret = component_add(dev, &exynos_dsi_component_ops);
+ ret = component_add(dev, &exynos_dsi_pltfm_component_ops);
if (ret)
goto err_disable_runtime;
@@ -1988,22 +2026,21 @@ static int exynos_dsi_probe(struct platform_device *pdev)
return ret;
}
-static int exynos_dsi_remove(struct platform_device *pdev)
+static int exynos_dsi_pltfm_remove(struct platform_device *pdev)
{
- struct exynos_dsi *dsi = platform_get_drvdata(pdev);
+ struct exynos_dsi_pltfm *dsi = platform_get_drvdata(pdev);
pm_runtime_disable(&pdev->dev);
- __exynos_dsi_remove(dsi);
+ exynos_dsi_remove(dsi->dsi);
- component_del(&pdev->dev, &exynos_dsi_component_ops);
+ component_del(&pdev->dev, &exynos_dsi_pltfm_component_ops);
return 0;
}
-static int __maybe_unused exynos_dsi_suspend(struct device *dev)
+static int exynos_dsi_suspend(struct exynos_dsi *dsi)
{
- struct exynos_dsi *dsi = dev_get_drvdata(dev);
const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;
int ret, i;
@@ -2031,9 +2068,8 @@ static int __maybe_unused exynos_dsi_suspend(struct device *dev)
return 0;
}
-static int __maybe_unused exynos_dsi_resume(struct device *dev)
+static int exynos_dsi_resume(struct exynos_dsi *dsi)
{
- struct exynos_dsi *dsi = dev_get_drvdata(dev);
const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;
int ret, i;
@@ -2065,15 +2101,29 @@ static int __maybe_unused exynos_dsi_resume(struct device *dev)
return ret;
}
+static int __maybe_unused exynos_dsi_pltfm_suspend(struct device *dev)
+{
+ struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
+
+ return exynos_dsi_suspend(dsi->dsi);
+}
+
+static int __maybe_unused exynos_dsi_pltfm_resume(struct device *dev)
+{
+ struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
+
+ return exynos_dsi_resume(dsi->dsi);
+}
+
static const struct dev_pm_ops exynos_dsi_pm_ops = {
- SET_RUNTIME_PM_OPS(exynos_dsi_suspend, exynos_dsi_resume, NULL)
+ SET_RUNTIME_PM_OPS(exynos_dsi_pltfm_suspend, exynos_dsi_pltfm_resume, NULL)
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
pm_runtime_force_resume)
};
struct platform_driver dsi_driver = {
- .probe = exynos_dsi_probe,
- .remove = exynos_dsi_remove,
+ .probe = exynos_dsi_pltfm_probe,
+ .remove = exynos_dsi_pltfm_remove,
.driver = {
.name = "exynos-dsi",
.owner = THIS_MODULE,
--
2.20.1
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