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Message-ID: <20230825024735.1443836-8-rekanorman@chromium.org>
Date: Fri, 25 Aug 2023 12:44:00 +1000
From: Reka Norman <rekanorman@...omium.org>
To: Hans Verkuil <hverkuil-cisco@...all.nl>
Cc: Daisuke Nojiri <dnojiri@...omium.org>,
Neil Armstrong <narmstrong@...libre.com>,
Stefan Adolfsson <sadolfsson@...gle.com>,
Reka Norman <rekanorman@...omium.org>,
Benson Leung <bleung@...omium.org>,
Guenter Roeck <groeck@...omium.org>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
chrome-platform@...ts.linux.dev, linux-kernel@...r.kernel.org,
linux-media@...r.kernel.org
Subject: [PATCH v2 7/9] media: cros-ec-cec: Allow specifying multiple HDMI connectors
Update the cec_dmi_match_table to allow specifying multiple HDMI
connectors for each device.
Signed-off-by: Reka Norman <rekanorman@...omium.org>
---
Changes in v2:
- Use NULL-terminated arrays for the conns field of cec_dmi_match
.../media/cec/platform/cros-ec/cros-ec-cec.c | 49 ++++++++++++-------
1 file changed, 30 insertions(+), 19 deletions(-)
diff --git a/drivers/media/cec/platform/cros-ec/cros-ec-cec.c b/drivers/media/cec/platform/cros-ec/cros-ec-cec.c
index 6989e63c05be..371699d599de 100644
--- a/drivers/media/cec/platform/cros-ec/cros-ec-cec.c
+++ b/drivers/media/cec/platform/cros-ec/cros-ec-cec.c
@@ -284,38 +284,43 @@ static SIMPLE_DEV_PM_OPS(cros_ec_cec_pm_ops,
#if IS_ENABLED(CONFIG_PCI) && IS_ENABLED(CONFIG_DMI)
/*
- * The Firmware only handles a single CEC interface tied to a single HDMI
- * connector we specify along with the DRM device name handling the HDMI output
+ * Specify the DRM device name handling the HDMI output and the HDMI connector
+ * corresponding to each CEC port. The order of connectors must match the order
+ * in the EC (first connector is EC port 0, ...), and the number of connectors
+ * must match the number of ports in the EC (which can be queried using the
+ * EC_CMD_CEC_PORT_COUNT host command).
*/
struct cec_dmi_match {
const char *sys_vendor;
const char *product_name;
const char *devname;
- const char *conn;
+ const char *const *conns;
};
+static const char *const fizz_conns[] = { "Port B", NULL };
+
static const struct cec_dmi_match cec_dmi_match_table[] = {
/* Google Fizz */
- { "Google", "Fizz", "0000:00:02.0", "Port B" },
+ { "Google", "Fizz", "0000:00:02.0", fizz_conns },
/* Google Brask */
- { "Google", "Brask", "0000:00:02.0", "Port B" },
+ { "Google", "Brask", "0000:00:02.0", fizz_conns },
/* Google Moli */
- { "Google", "Moli", "0000:00:02.0", "Port B" },
+ { "Google", "Moli", "0000:00:02.0", fizz_conns },
/* Google Kinox */
- { "Google", "Kinox", "0000:00:02.0", "Port B" },
+ { "Google", "Kinox", "0000:00:02.0", fizz_conns },
/* Google Kuldax */
- { "Google", "Kuldax", "0000:00:02.0", "Port B" },
+ { "Google", "Kuldax", "0000:00:02.0", fizz_conns },
/* Google Aurash */
- { "Google", "Aurash", "0000:00:02.0", "Port B" },
+ { "Google", "Aurash", "0000:00:02.0", fizz_conns },
/* Google Gladios */
- { "Google", "Gladios", "0000:00:02.0", "Port B" },
+ { "Google", "Gladios", "0000:00:02.0", fizz_conns },
/* Google Lisbon */
- { "Google", "Lisbon", "0000:00:02.0", "Port B" },
+ { "Google", "Lisbon", "0000:00:02.0", fizz_conns },
};
static struct device *cros_ec_cec_find_hdmi_dev(struct device *dev,
- const char **conn)
+ const char * const **conns)
{
int i;
@@ -332,7 +337,7 @@ static struct device *cros_ec_cec_find_hdmi_dev(struct device *dev,
if (!d)
return ERR_PTR(-EPROBE_DEFER);
put_device(d);
- *conn = m->conn;
+ *conns = m->conns;
return d;
}
}
@@ -346,7 +351,7 @@ static struct device *cros_ec_cec_find_hdmi_dev(struct device *dev,
#else
static struct device *cros_ec_cec_find_hdmi_dev(struct device *dev,
- const char **conn)
+ const char * const **conns)
{
return ERR_PTR(-ENODEV);
}
@@ -388,7 +393,7 @@ static int cros_ec_cec_get_write_cmd_version(struct cros_ec_cec *cros_ec_cec)
static int cros_ec_cec_init_port(struct device *dev,
struct cros_ec_cec *cros_ec_cec,
int port_num, struct device *hdmi_dev,
- const char *conn)
+ const char * const *conns)
{
struct cros_ec_cec_port *port;
int ret;
@@ -406,7 +411,13 @@ static int cros_ec_cec_init_port(struct device *dev,
if (IS_ERR(port->adap))
return PTR_ERR(port->adap);
- port->notify = cec_notifier_cec_adap_register(hdmi_dev, conn,
+ if (!conns[port_num]) {
+ dev_err(dev, "no conn for port %d\n", port_num);
+ ret = -ENODEV;
+ goto out_probe_adapter;
+ }
+
+ port->notify = cec_notifier_cec_adap_register(hdmi_dev, conns[port_num],
port->adap);
if (!port->notify) {
ret = -ENOMEM;
@@ -435,10 +446,10 @@ static int cros_ec_cec_probe(struct platform_device *pdev)
struct cros_ec_cec *cros_ec_cec;
struct cros_ec_cec_port *port;
struct device *hdmi_dev;
- const char *conn = NULL;
+ const char * const *conns = NULL;
int ret;
- hdmi_dev = cros_ec_cec_find_hdmi_dev(&pdev->dev, &conn);
+ hdmi_dev = cros_ec_cec_find_hdmi_dev(&pdev->dev, &conns);
if (IS_ERR(hdmi_dev))
return PTR_ERR(hdmi_dev);
@@ -460,7 +471,7 @@ static int cros_ec_cec_probe(struct platform_device *pdev)
for (int i = 0; i < cros_ec_cec->num_ports; i++) {
ret = cros_ec_cec_init_port(&pdev->dev, cros_ec_cec, i,
- hdmi_dev, conn);
+ hdmi_dev, conns);
if (ret)
goto unregister_ports;
}
--
2.42.0.rc2.253.gd59a3bf2b4-goog
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