[RFC 3/7] drm/omap: Manage the usable omap_dss_device list within omap_drm_private
Peter Ujfalusi
peter.ujfalusi at ti.com
Tue Aug 29 07:32:14 UTC 2017
Instead of reaching back to DSS to iterate through the dss_devices every
time, use an internal array where we store the available and usable
dss_devices.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi at ti.com>
---
drivers/gpu/drm/omapdrm/omap_drv.c | 95 +++++++++++++++++++++++---------------
drivers/gpu/drm/omapdrm/omap_drv.h | 3 ++
2 files changed, 62 insertions(+), 36 deletions(-)
diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c
index bd7fe317a365..b089604e871c 100644
--- a/drivers/gpu/drm/omapdrm/omap_drv.c
+++ b/drivers/gpu/drm/omapdrm/omap_drv.c
@@ -146,18 +146,27 @@ static int get_connector_type(struct omap_dss_device *dssdev)
}
}
-static void omap_disconnect_dssdevs(void)
+static void omap_disconnect_dssdevs(struct drm_device *ddev)
{
- struct omap_dss_device *dssdev = NULL;
+ struct omap_drm_private *priv = ddev->dev_private;
+ int i;
+
+ for (i = 0; i < priv->num_dssdevs; i++) {
+ struct omap_dss_device *dssdev = priv->dssdevs[i];
- for_each_dss_dev(dssdev)
dssdev->driver->disconnect(dssdev);
+ priv->dssdevs[i] = NULL;
+ omap_dss_put_device(dssdev);
+ }
+
+ priv->num_dssdevs = 0;
}
-static int omap_connect_dssdevs(void)
+static int omap_connect_dssdevs(struct drm_device *ddev)
{
- int r;
+ struct omap_drm_private *priv = ddev->dev_private;
struct omap_dss_device *dssdev = NULL;
+ int r;
if (!omapdss_stack_is_ready())
return -EPROBE_DEFER;
@@ -170,6 +179,14 @@ static int omap_connect_dssdevs(void)
} else if (r) {
dev_warn(dssdev->dev, "could not connect display: %s\n",
dssdev->name);
+ } else {
+ omap_dss_get_device(dssdev);
+ priv->dssdevs[priv->num_dssdevs++] = dssdev;
+ if (priv->num_dssdevs == ARRAY_SIZE(priv->dssdevs)) {
+ /* To balance the 'for_each_dss_dev' loop */
+ omap_dss_put_device(dssdev);
+ break;
+ }
}
}
@@ -180,7 +197,7 @@ static int omap_connect_dssdevs(void)
* if we are deferring probe, we disconnect the devices we previously
* connected
*/
- omap_disconnect_dssdevs();
+ omap_disconnect_dssdevs(ddev);
return r;
}
@@ -205,7 +222,7 @@ static int omap_modeset_init(struct drm_device *dev)
int num_ovls = priv->dispc_ops->get_num_ovls();
int num_mgrs = priv->dispc_ops->get_num_mgrs();
int num_crtcs, crtc_idx, plane_idx;
- int ret;
+ int ret, i;
u32 plane_crtc_mask;
drm_mode_config_init(dev);
@@ -222,11 +239,7 @@ static int omap_modeset_init(struct drm_device *dev)
* configuration does not match the expectations or exceeds
* the available resources, the configuration is rejected.
*/
- num_crtcs = 0;
- for_each_dss_dev(dssdev)
- if (omapdss_device_is_connected(dssdev))
- num_crtcs++;
-
+ num_crtcs = priv->num_dssdevs;
if (num_crtcs > num_mgrs || num_crtcs > num_ovls ||
num_crtcs > ARRAY_SIZE(priv->crtcs) ||
num_crtcs > ARRAY_SIZE(priv->planes) ||
@@ -244,15 +257,13 @@ static int omap_modeset_init(struct drm_device *dev)
crtc_idx = 0;
plane_idx = 0;
- for_each_dss_dev(dssdev) {
+ for (i = 0; i < priv->num_dssdevs; i++) {
+ struct omap_dss_device *dssdev = priv->dssdevs[i];
struct drm_connector *connector;
struct drm_encoder *encoder;
struct drm_plane *plane;
struct drm_crtc *crtc;
- if (!omapdss_device_is_connected(dssdev))
- continue;
-
encoder = omap_encoder_init(dev, dssdev);
if (!encoder)
return -ENOMEM;
@@ -326,11 +337,14 @@ static int omap_modeset_init(struct drm_device *dev)
/*
* Enable the HPD in external components if supported
*/
-static void omap_modeset_enable_external_hpd(void)
+static void omap_modeset_enable_external_hpd(struct drm_device *ddev)
{
- struct omap_dss_device *dssdev = NULL;
+ struct omap_drm_private *priv = ddev->dev_private;
+ int i;
+
+ for (i = 0; i < priv->num_dssdevs; i++) {
+ struct omap_dss_device *dssdev = priv->dssdevs[i];
- for_each_dss_dev(dssdev) {
if (dssdev->driver->enable_hpd)
dssdev->driver->enable_hpd(dssdev);
}
@@ -339,11 +353,14 @@ static void omap_modeset_enable_external_hpd(void)
/*
* Disable the HPD in external components if supported
*/
-static void omap_modeset_disable_external_hpd(void)
+static void omap_modeset_disable_external_hpd(struct drm_device *ddev)
{
- struct omap_dss_device *dssdev = NULL;
+ struct omap_drm_private *priv = ddev->dev_private;
+ int i;
+
+ for (i = 0; i < priv->num_dssdevs; i++) {
+ struct omap_dss_device *dssdev = priv->dssdevs[i];
- for_each_dss_dev(dssdev) {
if (dssdev->driver->disable_hpd)
dssdev->driver->disable_hpd(dssdev);
}
@@ -562,7 +579,7 @@ static int pdev_probe(struct platform_device *pdev)
omap_crtc_pre_init();
- ret = omap_connect_dssdevs();
+ ret = omap_connect_dssdevs(ddev);
if (ret)
goto err_crtc_uninit;
@@ -597,7 +614,7 @@ static int pdev_probe(struct platform_device *pdev)
priv->fbdev = omap_fbdev_init(ddev);
drm_kms_helper_poll_init(ddev);
- omap_modeset_enable_external_hpd();
+ omap_modeset_enable_external_hpd(ddev);
/*
* Register the DRM device with the core and the connectors with
@@ -610,7 +627,7 @@ static int pdev_probe(struct platform_device *pdev)
return 0;
err_cleanup_helpers:
- omap_modeset_disable_external_hpd();
+ omap_modeset_disable_external_hpd(ddev);
drm_kms_helper_poll_fini(ddev);
if (priv->fbdev)
omap_fbdev_free(ddev);
@@ -620,7 +637,7 @@ static int pdev_probe(struct platform_device *pdev)
err_gem_deinit:
omap_gem_deinit(ddev);
destroy_workqueue(priv->wq);
- omap_disconnect_dssdevs();
+ omap_disconnect_dssdevs(ddev);
err_crtc_uninit:
omap_crtc_pre_uninit();
drm_dev_unref(ddev);
@@ -636,7 +653,7 @@ static int pdev_remove(struct platform_device *pdev)
drm_dev_unregister(ddev);
- omap_modeset_disable_external_hpd();
+ omap_modeset_disable_external_hpd(ddev);
drm_kms_helper_poll_fini(ddev);
if (priv->fbdev)
@@ -651,7 +668,7 @@ static int pdev_remove(struct platform_device *pdev)
destroy_workqueue(priv->wq);
- omap_disconnect_dssdevs();
+ omap_disconnect_dssdevs(ddev);
omap_crtc_pre_uninit();
drm_dev_unref(ddev);
@@ -660,11 +677,14 @@ static int pdev_remove(struct platform_device *pdev)
}
#ifdef CONFIG_PM_SLEEP
-static int omap_drm_suspend_all_displays(void)
+static int omap_drm_suspend_all_displays(struct drm_device *ddev)
{
- struct omap_dss_device *dssdev = NULL;
+ struct omap_drm_private *priv = ddev->dev_private;
+ int i;
+
+ for (i = 0; i < priv->num_dssdevs; i++) {
+ struct omap_dss_device *dssdev = priv->dssdevs[i];
- for_each_dss_dev(dssdev) {
if (!dssdev->driver)
continue;
@@ -679,11 +699,14 @@ static int omap_drm_suspend_all_displays(void)
return 0;
}
-static int omap_drm_resume_all_displays(void)
+static int omap_drm_resume_all_displays(struct drm_device *ddev)
{
- struct omap_dss_device *dssdev = NULL;
+ struct omap_drm_private *priv = ddev->dev_private;
+ int i;
+
+ for (i = 0; i < priv->num_dssdevs; i++) {
+ struct omap_dss_device *dssdev = priv->dssdevs[i];
- for_each_dss_dev(dssdev) {
if (!dssdev->driver)
continue;
@@ -703,7 +726,7 @@ static int omap_drm_suspend(struct device *dev)
drm_kms_helper_poll_disable(drm_dev);
drm_modeset_lock_all(drm_dev);
- omap_drm_suspend_all_displays();
+ omap_drm_suspend_all_displays(drm_dev);
drm_modeset_unlock_all(drm_dev);
return 0;
@@ -714,7 +737,7 @@ static int omap_drm_resume(struct device *dev)
struct drm_device *drm_dev = dev_get_drvdata(dev);
drm_modeset_lock_all(drm_dev);
- omap_drm_resume_all_displays();
+ omap_drm_resume_all_displays(drm_dev);
drm_modeset_unlock_all(drm_dev);
drm_kms_helper_poll_enable(drm_dev);
diff --git a/drivers/gpu/drm/omapdrm/omap_drv.h b/drivers/gpu/drm/omapdrm/omap_drv.h
index 4bd1e9070b31..cccaae787a7c 100644
--- a/drivers/gpu/drm/omapdrm/omap_drv.h
+++ b/drivers/gpu/drm/omapdrm/omap_drv.h
@@ -51,6 +51,9 @@ struct omap_drm_private {
const struct dispc_ops *dispc_ops;
+ unsigned int num_dssdevs;
+ struct omap_dss_device *dssdevs[8];
+
unsigned int num_crtcs;
struct drm_crtc *crtcs[8];
--
2.14.1
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