[PATCH v6 30/84] drm/omap: dsi: Reverse direction of the DSS device enable/disable operations
Tomi Valkeinen
tomi.valkeinen at ti.com
Tue Dec 15 10:46:03 UTC 2020
From: Sebastian Reichel <sebastian.reichel at collabora.com>
Complete the direction reversal of the DSS device enable/disable
operations started by commit 19b4200d8f4b ("drm/omap: Reverse direction
of the DSS device enable/disable operations").
This effectively drops the requirement of calling DSS specific
code from the DSI panel driver moving it a bit further to a
standard drm_panel driver.
Signed-off-by: Sebastian Reichel <sebastian.reichel at collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen at ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
---
.../gpu/drm/omapdrm/displays/panel-dsi-cm.c | 74 +++++++++----------
drivers/gpu/drm/omapdrm/omap_encoder.c | 28 ++-----
2 files changed, 45 insertions(+), 57 deletions(-)
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
index ccaf6ffe4f86..b72930dcbdf4 100644
--- a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
+++ b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
@@ -284,27 +284,6 @@ static int dsicm_power_on(struct panel_drv_data *ddata)
struct omap_dss_device *src = ddata->src;
u8 id1, id2, id3;
int r;
- struct omap_dss_dsi_config dsi_config = {
- .vm = &ddata->vm,
- .hs_clk_min = 150000000,
- .hs_clk_max = 300000000,
- .lp_clk_min = 7000000,
- .lp_clk_max = 10000000,
- };
-
- r = regulator_bulk_enable(ARRAY_SIZE(ddata->supplies), ddata->supplies);
- if (r) {
- dev_err(&ddata->dsi->dev, "failed to enable supplies: %d\n", r);
- return r;
- }
-
- r = src->ops->dsi.set_config(src, &dsi_config);
- if (r) {
- dev_err(&ddata->dsi->dev, "failed to configure DSI\n");
- goto err_regulators;
- }
-
- src->ops->enable(src);
dsicm_hw_reset(ddata);
@@ -359,12 +338,6 @@ static int dsicm_power_on(struct panel_drv_data *ddata)
dsicm_hw_reset(ddata);
- src->ops->disable(src);
-err_regulators:
- r = regulator_bulk_disable(ARRAY_SIZE(ddata->supplies), ddata->supplies);
- if (r)
- dev_err(&ddata->dsi->dev, "failed to disable supplies: %d\n", r);
-
return r;
}
@@ -373,6 +346,8 @@ static void dsicm_power_off(struct panel_drv_data *ddata)
struct omap_dss_device *src = ddata->src;
int r;
+ ddata->enabled = false;
+
src->ops->dsi.disable_video_output(src, ddata->dsi->channel);
r = mipi_dsi_dcs_set_display_off(ddata->dsi);
@@ -384,14 +359,6 @@ static void dsicm_power_off(struct panel_drv_data *ddata)
"error disabling panel, issuing HW reset\n");
dsicm_hw_reset(ddata);
}
-
- src->ops->disable(src);
-
- r = regulator_bulk_disable(ARRAY_SIZE(ddata->supplies), ddata->supplies);
- if (r)
- dev_err(&ddata->dsi->dev, "failed to disable supplies: %d\n", r);
-
- ddata->enabled = false;
}
static int dsicm_connect(struct omap_dss_device *src,
@@ -411,6 +378,29 @@ static void dsicm_disconnect(struct omap_dss_device *src,
ddata->src = NULL;
}
+static void dsicm_pre_enable(struct omap_dss_device *dssdev)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+ struct omap_dss_device *src = ddata->src;
+ int r;
+ struct omap_dss_dsi_config dsi_config = {
+ .vm = &ddata->vm,
+ .hs_clk_min = 150000000,
+ .hs_clk_max = 300000000,
+ .lp_clk_min = 7000000,
+ .lp_clk_max = 10000000,
+ };
+
+ r = regulator_bulk_enable(ARRAY_SIZE(ddata->supplies), ddata->supplies);
+ if (r)
+ dev_err(&ddata->dsi->dev, "failed to enable supplies: %d\n", r);
+
+ r = src->ops->dsi.set_config(src, &dsi_config);
+ if (r) {
+ dev_err(&ddata->dsi->dev, "failed to configure DSI\n");
+ }
+}
+
static void dsicm_enable(struct omap_dss_device *dssdev)
{
struct panel_drv_data *ddata = to_panel_data(dssdev);
@@ -445,6 +435,16 @@ static void dsicm_disable(struct omap_dss_device *dssdev)
mutex_unlock(&ddata->lock);
}
+static void dsicm_post_disable(struct omap_dss_device *dssdev)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+ int r;
+
+ r = regulator_bulk_disable(ARRAY_SIZE(ddata->supplies), ddata->supplies);
+ if (r)
+ dev_err(&ddata->dsi->dev, "failed to disable supplies: %d\n", r);
+}
+
static int _dsicm_enable_te(struct panel_drv_data *ddata, bool enable)
{
struct mipi_dsi_device *dsi = ddata->dsi;
@@ -498,8 +498,10 @@ static const struct omap_dss_device_ops dsicm_ops = {
.connect = dsicm_connect,
.disconnect = dsicm_disconnect,
+ .pre_enable = dsicm_pre_enable,
.enable = dsicm_enable,
.disable = dsicm_disable,
+ .post_disable = dsicm_post_disable,
.get_modes = dsicm_get_modes,
.check_timings = dsicm_check_timings,
@@ -655,8 +657,6 @@ static int __exit dsicm_remove(struct mipi_dsi_device *dsi)
omapdss_device_unregister(dssdev);
- if (omapdss_device_is_enabled(dssdev))
- dsicm_disable(dssdev);
omapdss_device_disconnect(ddata->src, dssdev);
sysfs_remove_group(&dsi->dev.kobj, &dsicm_attr_group);
diff --git a/drivers/gpu/drm/omapdrm/omap_encoder.c b/drivers/gpu/drm/omapdrm/omap_encoder.c
index a2b08d32baad..8ec4206b8e3e 100644
--- a/drivers/gpu/drm/omapdrm/omap_encoder.c
+++ b/drivers/gpu/drm/omapdrm/omap_encoder.c
@@ -136,16 +136,10 @@ static void omap_encoder_disable(struct drm_encoder *encoder)
*/
omapdss_device_disable(dssdev->next);
- /*
- * Disable the internal encoder. This will disable the DSS output. The
- * DSI is treated as an exception as DSI pipelines still use the legacy
- * flow where the pipeline output controls the encoder.
- */
- if (dssdev->type != OMAP_DISPLAY_TYPE_DSI) {
- if (dssdev->ops && dssdev->ops->disable)
- dssdev->ops->disable(dssdev);
- dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
- }
+ /* Disable the internal encoder. This will disable the DSS output. */
+ if (dssdev->ops && dssdev->ops->disable)
+ dssdev->ops->disable(dssdev);
+ dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
/*
* Perform the post-disable operations on the chain of external devices
@@ -165,16 +159,10 @@ static void omap_encoder_enable(struct drm_encoder *encoder)
/* Prepare the chain of external devices for pipeline enable. */
omapdss_device_pre_enable(dssdev->next);
- /*
- * Enable the internal encoder. This will enable the DSS output. The
- * DSI is treated as an exception as DSI pipelines still use the legacy
- * flow where the pipeline output controls the encoder.
- */
- if (dssdev->type != OMAP_DISPLAY_TYPE_DSI) {
- if (dssdev->ops && dssdev->ops->enable)
- dssdev->ops->enable(dssdev);
- dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
- }
+ /* Enable the internal encoder. This will enable the DSS output. */
+ if (dssdev->ops && dssdev->ops->enable)
+ dssdev->ops->enable(dssdev);
+ dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
/*
* Enable the chain of external devices, starting at the one at the
--
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