[PATCH v5 4/7] drm/msm/dp: move parser->parse() and dp_power_client_init() to probe

From: Kuogee Hsieh
Date: Wed Oct 04 2023 - 12:27:38 EST


Original both parser->parse() and dp_power_client_init() are done at
dp_display_bind() since eDP population is done at binding time.
In the preparation of having eDP population done at probe() time,
move both function from dp_display_bind() to dp_display_probe().

Changes in v4:
-- explain why parser->parse() and dp_power_client_init() are moved to probe time
-- tear down sub modules if failed

Changes in v4:
-- split this patch out of "incorporate pm_runtime framework into DP driver" patch

Signed-off-by: Kuogee Hsieh <quic_khsieh@xxxxxxxxxxx>
---
drivers/gpu/drm/msm/dp/dp_display.c | 22 ++++++++++++----------
1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index 32663ea..e4942fc 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -276,11 +276,6 @@ static int dp_display_bind(struct device *dev, struct device *master,
dp->dp_display.drm_dev = drm;
priv->dp[dp->id] = &dp->dp_display;

- rc = dp->parser->parse(dp->parser);
- if (rc) {
- DRM_ERROR("device tree parsing failed\n");
- goto end;
- }


dp->drm_dev = drm;
@@ -291,11 +286,6 @@ static int dp_display_bind(struct device *dev, struct device *master,
goto end;
}

- rc = dp_power_client_init(dp->power);
- if (rc) {
- DRM_ERROR("Power client create failed\n");
- goto end;
- }

rc = dp_register_audio_driver(dev, dp->audio);
if (rc) {
@@ -1250,6 +1240,18 @@ static int dp_display_probe(struct platform_device *pdev)
return -EPROBE_DEFER;
}

+ rc = dp->parser->parse(dp->parser);
+ if (rc) {
+ DRM_ERROR("device tree parsing failed\n");
+ goto err;
+ }
+
+ rc = dp_power_client_init(dp->power);
+ if (rc) {
+ DRM_ERROR("Power client create failed\n");
+ goto err;
+ }
+
/* setup event q */
mutex_init(&dp->event_mutex);
init_waitqueue_head(&dp->event_q);
--
2.7.4