From: Hans Verkuil <hverkuil-cisco@xs4all.nl>
To: Dariusz Marcinkiewicz <darekm@google.com>,
dri-devel@lists.freedesktop.org, linux-media@vger.kernel.org
Cc: David Airlie <airlied@linux.ie>,
Russell King <linux@armlinux.org.uk>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v7 5/9] drm: tda998x: use cec_notifier_conn_(un)register
Date: Mon, 19 Aug 2019 11:30:27 +0200 [thread overview]
Message-ID: <7a00ef8f-5b63-bc43-4f76-b0c4773b9117@xs4all.nl> (raw)
In-Reply-To: <20190814104520.6001-6-darekm@google.com>
On 8/14/19 12:45 PM, Dariusz Marcinkiewicz wrote:
> 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 v6:
> - move cec_notifier_conn_unregister to tda998x_bridge_detach,
> - add a mutex protecting accesses to a CEC notifier.
> Changes since v2:
> - cec_notifier_phys_addr_invalidate where appropriate,
> - don't check for NULL notifier before calling
> cec_notifier_conn_unregister.
> 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 | 36 +++++++++++++++++++++----------
> 1 file changed, 25 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c
> index 61e042918a7fc..643480415473f 100644
> --- a/drivers/gpu/drm/i2c/tda998x_drv.c
> +++ b/drivers/gpu/drm/i2c/tda998x_drv.c
> @@ -82,6 +82,8 @@ struct tda998x_priv {
> u8 audio_port_enable[AUDIO_ROUTE_NUM];
> struct tda9950_glue cec_glue;
> struct gpio_desc *calib;
> +
> + struct mutex cec_notifiy_mutex;
Typo: notifiy -> notify
Regards,
Hans
> struct cec_notifier *cec_notify;
> };
>
> @@ -805,8 +807,11 @@ static irqreturn_t tda998x_irq_thread(int irq, void *data)
> tda998x_edid_delay_start(priv);
> } else {
> schedule_work(&priv->detect_work);
> - cec_notifier_set_phys_addr(priv->cec_notify,
> - CEC_PHYS_ADDR_INVALID);
> +
> + mutex_lock(&priv->cec_notifiy_mutex);
> + cec_notifier_phys_addr_invalidate(
> + priv->cec_notify);
> + mutex_unlock(&priv->cec_notifiy_mutex);
> }
>
> handled = true;
> @@ -1331,6 +1336,8 @@ 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;
> @@ -1347,6 +1354,16 @@ 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);
> + return -ENOMEM;
> +
> + mutex_lock(&priv->cec_notifiy_mutex);
> + priv->cec_notify = notifier;
> + mutex_unlock(&priv->cec_notifiy_mutex);
> +
> drm_connector_attach_encoder(&priv->connector,
> priv->bridge.encoder);
>
> @@ -1366,6 +1383,11 @@ static void tda998x_bridge_detach(struct drm_bridge *bridge)
> {
> struct tda998x_priv *priv = bridge_to_tda998x_priv(bridge);
>
> + mutex_lock(&priv->cec_notifiy_mutex);
> + cec_notifier_conn_unregister(priv->cec_notify);
> + priv->cec_notify = NULL;
> + mutex_unlock(&priv->cec_notifiy_mutex);
> +
> drm_connector_cleanup(&priv->connector);
> }
>
> @@ -1789,9 +1811,6 @@ static void tda998x_destroy(struct device *dev)
> cancel_work_sync(&priv->detect_work);
>
> i2c_unregister_device(priv->cec);
> -
> - if (priv->cec_notify)
> - cec_notifier_put(priv->cec_notify);
> }
>
> static int tda998x_create(struct device *dev)
> @@ -1812,6 +1831,7 @@ static int tda998x_create(struct device *dev)
> mutex_init(&priv->mutex); /* protect the page access */
> mutex_init(&priv->audio_mutex); /* protect access from audio thread */
> mutex_init(&priv->edid_mutex);
> + mutex_init(&priv->cec_notifiy_mutex);
> INIT_LIST_HEAD(&priv->bridge.list);
> init_waitqueue_head(&priv->edid_delay_waitq);
> timer_setup(&priv->edid_delay_timer, tda998x_edid_delay_done, 0);
> @@ -1916,12 +1936,6 @@ 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;
>
next prev parent reply other threads:[~2019-08-19 9:30 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-14 10:44 [PATCH v7 0/9] drm: cec: convert DRM drivers to the new notifier API Dariusz Marcinkiewicz
2019-08-14 10:44 ` [PATCH v7 1/9] drm_dp_cec: add connector info support Dariusz Marcinkiewicz
2019-08-15 18:10 ` Lyude Paul
2019-08-26 9:05 ` Ben Skeggs
2019-08-22 8:08 ` Hans Verkuil
2019-08-26 9:00 ` Hans Verkuil
2019-08-28 15:05 ` Ville Syrjälä
2019-08-14 10:45 ` [PATCH v7 2/9] drm/i915/intel_hdmi: use cec_notifier_conn_(un)register Dariusz Marcinkiewicz
2019-08-22 8:03 ` Hans Verkuil
2019-08-26 8:59 ` Hans Verkuil
2019-08-26 12:08 ` Ville Syrjälä
2019-08-14 10:45 ` [PATCH v7 3/9] dw-hdmi-cec: use cec_notifier_cec_adap_(un)register Dariusz Marcinkiewicz
2019-08-19 14:35 ` Neil Armstrong
2019-08-20 7:48 ` Neil Armstrong
2019-08-14 10:45 ` [PATCH v7 4/9] tda9950: " Dariusz Marcinkiewicz
2019-08-14 10:45 ` [PATCH v7 5/9] drm: tda998x: use cec_notifier_conn_(un)register Dariusz Marcinkiewicz
2019-08-19 9:30 ` Hans Verkuil [this message]
2019-08-19 11:22 ` [PATCH v7.1 " Dariusz Marcinkiewicz
2019-08-28 7:15 ` [PATCH v7.2 " Dariusz Marcinkiewicz
2019-08-25 13:12 ` [PATCH v7 " Hans Verkuil
2019-08-28 7:18 ` Dariusz Marcinkiewicz
2019-08-14 10:45 ` [PATCH v7 6/9] drm: sti: " Dariusz Marcinkiewicz
2019-08-19 9:34 ` Hans Verkuil
2019-08-22 8:11 ` Hans Verkuil
2019-09-02 13:11 ` Benjamin Gaignard
2019-08-14 10:45 ` [PATCH v7 7/9] drm: tegra: " Dariusz Marcinkiewicz
2019-08-19 9:33 ` Hans Verkuil
2019-08-28 8:09 ` Hans Verkuil
2019-08-28 9:38 ` Thierry Reding
2019-08-28 10:06 ` Hans Verkuil
2019-08-28 11:54 ` Thierry Reding
2019-10-04 8:48 ` Hans Verkuil
2019-10-14 7:51 ` Hans Verkuil
2019-08-28 9:36 ` Thierry Reding
2019-10-14 12:17 ` Thierry Reding
2019-08-14 10:45 ` [PATCH v7 8/9] drm: dw-hdmi: " Dariusz Marcinkiewicz
2019-08-19 9:32 ` Hans Verkuil
2019-08-19 14:05 ` Hans Verkuil
2019-08-19 14:38 ` Neil Armstrong
2019-08-19 14:41 ` Hans Verkuil
2019-08-19 14:47 ` Neil Armstrong
2019-08-20 7:48 ` Neil Armstrong
2019-08-14 10:45 ` [PATCH v7 9/9] drm: exynos: exynos_hdmi: " Dariusz Marcinkiewicz
2019-08-19 9:32 ` Hans Verkuil
2019-08-28 8:39 ` Sylwester Nawrocki
2019-08-28 12:34 ` [PATCH v7.1 " Dariusz Marcinkiewicz
2019-08-28 12:38 ` [PATCH v7 " Dariusz Marcinkiewicz
2019-08-19 9:38 ` [PATCH v7 0/9] drm: cec: convert DRM drivers to the new notifier API Hans Verkuil
2019-08-19 11:28 ` Dariusz Marcinkiewicz
2019-08-19 12:00 ` Hans Verkuil
2019-08-19 14:48 ` Neil Armstrong
2019-08-19 14:55 ` Hans Verkuil
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