From: Dariusz Marcinkiewicz <darekm@google.com>
To: linux-media@vger.kernel.org, hverkuil-cisco@xs4all.nl,
hverkuil@xs4all.nl
Cc: Dariusz Marcinkiewicz <darekm@google.com>
Subject: [PATCH v2 1/5] drm: tda998x: use cec_notifier_conn_(un)register
Date: Mon, 1 Jul 2019 16:59:40 +0200 [thread overview]
Message-ID: <20190701145944.214098-2-darekm@google.com> (raw)
In-Reply-To: <20190701145944.214098-1-darekm@google.com>
Use the new cec_notifier_conn_(un)register() functions to
(un)register the notifier for the HDMI connector, and fill
in the cec_connector_info.
Changes since v1:
Add memory barrier to make sure that the notifier
becomes visible to the irq thread once it is
fully constructed.
Signed-off-by: Dariusz Marcinkiewicz <darekm@google.com>
---
drivers/gpu/drm/i2c/tda998x_drv.c | 32 ++++++++++++++++++++++---------
1 file changed, 23 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c
index 7f34601bb5155..7844f4113a839 100644
--- a/drivers/gpu/drm/i2c/tda998x_drv.c
+++ b/drivers/gpu/drm/i2c/tda998x_drv.c
@@ -794,9 +794,14 @@ static irqreturn_t tda998x_irq_thread(int irq, void *data)
if (lvl & CEC_RXSHPDLEV_HPD) {
tda998x_edid_delay_start(priv);
} else {
+ struct cec_notifier *notify;
+
schedule_work(&priv->detect_work);
- cec_notifier_set_phys_addr(priv->cec_notify,
- CEC_PHYS_ADDR_INVALID);
+
+ notify = READ_ONCE(priv->cec_notify);
+ if (notify)
+ cec_notifier_set_phys_addr(notify,
+ CEC_PHYS_ADDR_INVALID);
}
handled = true;
@@ -1253,6 +1258,8 @@ static int tda998x_connector_init(struct tda998x_priv *priv,
struct drm_device *drm)
{
struct drm_connector *connector = &priv->connector;
+ struct cec_connector_info conn_info;
+ struct cec_notifier *notifier;
int ret;
connector->interlace_allowed = 1;
@@ -1269,6 +1276,19 @@ static int tda998x_connector_init(struct tda998x_priv *priv,
if (ret)
return ret;
+ cec_fill_conn_info_from_drm(&conn_info, connector);
+
+ notifier = cec_notifier_conn_register(priv->cec_glue.parent,
+ NULL, &conn_info);
+ if (!notifier)
+ return -ENOMEM;
+ /*
+ * Make sure that tda998x_irq_thread does see the notifier
+ * when it fully constructed.
+ */
+ smp_wmb();
+ priv->cec_notify = notifier;
+
drm_connector_attach_encoder(&priv->connector,
priv->bridge.encoder);
@@ -1651,7 +1671,7 @@ static void tda998x_destroy(struct device *dev)
i2c_unregister_device(priv->cec);
if (priv->cec_notify)
- cec_notifier_put(priv->cec_notify);
+ cec_notifier_conn_unregister(priv->cec_notify);
}
static int tda998x_create(struct device *dev)
@@ -1776,12 +1796,6 @@ static int tda998x_create(struct device *dev)
cec_write(priv, REG_CEC_RXSHPDINTENA, CEC_RXSHPDLEV_HPD);
}
- priv->cec_notify = cec_notifier_get(dev);
- if (!priv->cec_notify) {
- ret = -ENOMEM;
- goto fail;
- }
-
priv->cec_glue.parent = dev;
priv->cec_glue.data = priv;
priv->cec_glue.init = tda998x_cec_hook_init;
--
2.22.0.410.gd8fdbe21b5-goog
next prev parent reply other threads:[~2019-07-01 14:59 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-01 14:59 [PATCH v2 0/5] cec: convert remaining drivers to the new notifier API Dariusz Marcinkiewicz
2019-07-01 14:59 ` Dariusz Marcinkiewicz [this message]
2019-07-15 10:47 ` [PATCH v2 1/5] drm: tda998x: use cec_notifier_conn_(un)register Hans Verkuil
2019-07-01 14:59 ` [PATCH v2 2/5] drm: sti: " Dariusz Marcinkiewicz
2019-07-15 10:49 ` Hans Verkuil
2019-07-01 14:59 ` [PATCH v2 3/5] drm: tegra: " Dariusz Marcinkiewicz
2019-07-15 10:51 ` Hans Verkuil
2019-07-01 14:59 ` [PATCH v2 4/5] drm: dw-hdmi: " Dariusz Marcinkiewicz
2019-07-15 10:52 ` Hans Verkuil
2019-07-01 14:59 ` [PATCH v2 5/5] drm: exynos: exynos_hdmi: " Dariusz Marcinkiewicz
2019-07-15 10:53 ` Hans Verkuil
2019-07-15 11:18 ` [PATCH v2 0/5] cec: convert remaining drivers to the new notifier API Hans Verkuil
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