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 v3 8/9] drm: dw-hdmi: use cec_notifier_conn_(un)register
Date: Tue, 16 Jul 2019 09:58:19 +0200 [thread overview]
Message-ID: <20190716075820.260202-9-darekm@google.com> (raw)
In-Reply-To: <20190716075820.260202-1-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 v2:
- removed unnecessary NULL check before a call to
cec_notifier_conn_unregister,
- use cec_notifier_phys_addr_invalidate to invalidate physical
address.
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/bridge/synopsys/dw-hdmi.c | 36 ++++++++++++++---------
1 file changed, 22 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index ab7968c8f6a29..1e183af0e1ab1 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -2118,6 +2118,8 @@ static int dw_hdmi_bridge_attach(struct drm_bridge *bridge)
struct dw_hdmi *hdmi = bridge->driver_private;
struct drm_encoder *encoder = bridge->encoder;
struct drm_connector *connector = &hdmi->connector;
+ struct cec_connector_info conn_info;
+ struct cec_notifier *notifier;
connector->interlace_allowed = 1;
connector->polled = DRM_CONNECTOR_POLL_HPD;
@@ -2129,6 +2131,18 @@ static int dw_hdmi_bridge_attach(struct drm_bridge *bridge)
drm_connector_attach_encoder(connector, encoder);
+ cec_fill_conn_info_from_drm(&conn_info, connector);
+
+ notifier = cec_notifier_conn_register(hdmi->dev, NULL, &conn_info);
+ if (!notifier)
+ return -ENOMEM;
+ /*
+ * Make sure that dw_hdmi_irq thread does see the notifier
+ * when it fully constructed.
+ */
+ smp_wmb();
+ hdmi->cec_notifier = notifier;
+
return 0;
}
@@ -2295,9 +2309,13 @@ static irqreturn_t dw_hdmi_irq(int irq, void *dev_id)
phy_stat & HDMI_PHY_HPD,
phy_stat & HDMI_PHY_RX_SENSE);
- if ((phy_stat & (HDMI_PHY_RX_SENSE | HDMI_PHY_HPD)) == 0)
- cec_notifier_set_phys_addr(hdmi->cec_notifier,
- CEC_PHYS_ADDR_INVALID);
+ if ((phy_stat & (HDMI_PHY_RX_SENSE | HDMI_PHY_HPD)) == 0) {
+ struct cec_notifier *notifer;
+
+ notifer = READ_ONCE(hdmi->cec_notifier);
+ if (notifer)
+ cec_notifier_phys_addr_invalidate(notifer);
+ }
}
if (intr_stat & HDMI_IH_PHY_STAT0_HPD) {
@@ -2600,12 +2618,6 @@ __dw_hdmi_probe(struct platform_device *pdev,
if (ret)
goto err_iahb;
- hdmi->cec_notifier = cec_notifier_get(dev);
- if (!hdmi->cec_notifier) {
- ret = -ENOMEM;
- goto err_iahb;
- }
-
/*
* To prevent overflows in HDMI_IH_FC_STAT2, set the clk regenerator
* N and cts values before enabling phy
@@ -2693,9 +2705,6 @@ __dw_hdmi_probe(struct platform_device *pdev,
hdmi->ddc = NULL;
}
- if (hdmi->cec_notifier)
- cec_notifier_put(hdmi->cec_notifier);
-
clk_disable_unprepare(hdmi->iahb_clk);
if (hdmi->cec_clk)
clk_disable_unprepare(hdmi->cec_clk);
@@ -2717,8 +2726,7 @@ static void __dw_hdmi_remove(struct dw_hdmi *hdmi)
/* Disable all interrupts */
hdmi_writeb(hdmi, ~0, HDMI_IH_MUTE_PHY_STAT0);
- if (hdmi->cec_notifier)
- cec_notifier_put(hdmi->cec_notifier);
+ cec_notifier_conn_unregister(hdmi->cec_notifier);
clk_disable_unprepare(hdmi->iahb_clk);
clk_disable_unprepare(hdmi->isfr_clk);
--
2.22.0.510.g264f2c817a-goog
next prev parent reply other threads:[~2019-07-16 7:59 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-16 7:58 [PATCH v3 0/9] drm: cec: convert DRM drivers to the new notifier API Dariusz Marcinkiewicz
2019-07-16 7:58 ` [PATCH v3 1/9] drm_dp_cec: add connector info support Dariusz Marcinkiewicz
2019-07-16 7:58 ` [PATCH v3 2/9] drm/i915/intel_hdmi: use cec_notifier_conn_(un)register Dariusz Marcinkiewicz
2019-07-16 7:58 ` [PATCH v3 3/9] dw-hdmi-cec: use cec_notifier_cec_adap_(un)register Dariusz Marcinkiewicz
2019-07-16 8:48 ` Hans Verkuil
2019-07-16 12:38 ` Dariusz Marcinkiewicz
2019-07-16 8:50 ` Hans Verkuil
2019-07-16 7:58 ` [PATCH v3 4/9] tda9950: " Dariusz Marcinkiewicz
2019-07-16 7:58 ` [PATCH v3 5/9] drm: tda998x: use cec_notifier_conn_(un)register Dariusz Marcinkiewicz
2019-07-16 7:58 ` [PATCH v3 6/9] drm: sti: " Dariusz Marcinkiewicz
2019-07-16 7:58 ` [PATCH v3 7/9] drm: tegra: " Dariusz Marcinkiewicz
2019-07-16 7:58 ` Dariusz Marcinkiewicz [this message]
2019-07-16 7:58 ` [PATCH v3 9/9] drm: exynos: exynos_hdmi: " Dariusz Marcinkiewicz
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