From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 6/6] serial: ns16550: Add devicetree probe support
Date: Tue, 23 Jul 2013 08:40:10 +0200 [thread overview]
Message-ID: <1374561610-686-7-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1374561610-686-1-git-send-email-s.hauer@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
drivers/serial/serial_ns16550.c | 25 ++++++++++++++++++++++++-
1 file changed, 24 insertions(+), 1 deletion(-)
diff --git a/drivers/serial/serial_ns16550.c b/drivers/serial/serial_ns16550.c
index b010785..ad3125a 100644
--- a/drivers/serial/serial_ns16550.c
+++ b/drivers/serial/serial_ns16550.c
@@ -231,6 +231,16 @@ static int ns16550_tstc(struct console_device *cdev)
return ((ns16550_read(cdev, lsr) & LSR_DR) != 0);
}
+static void ns16550_probe_dt(struct device_d *dev, struct ns16550_priv *priv)
+{
+ struct device_node *np = dev->device_node;
+
+ if (!IS_ENABLED(CONFIG_OFDEVICE))
+ return;
+
+ of_property_read_u32(np, "reg-shift", &priv->plat.shift);
+}
+
/**
* @brief Probe entry point -called on the first match for device
*
@@ -251,8 +261,12 @@ static int ns16550_probe(struct device_d *dev)
priv = xzalloc(sizeof(*priv));
+ if (plat)
+ priv->plat = *plat;
+ else
+ ns16550_probe_dt(dev, priv);
+
cdev = &priv->cdev;
- priv->plat = *plat;
if (!plat || !plat->clock) {
priv->clk = clk_get(dev, NULL);
@@ -288,11 +302,20 @@ err:
return ret;
}
+static struct of_device_id ns16550_serial_dt_ids[] = {
+ {
+ .compatible = "ns16550a",
+ }, {
+ /* sentinel */
+ },
+};
+
/**
* @brief Driver registration structure
*/
static struct driver_d ns16550_serial_driver = {
.name = "ns16550_serial",
.probe = ns16550_probe,
+ .of_compatible = DRV_OF_COMPAT(ns16550_serial_dt_ids),
};
console_platform_driver(ns16550_serial_driver);
--
1.8.3.2
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prev parent reply other threads:[~2013-07-23 6:40 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-23 6:40 [PATCH] serial: ns16550: Add devicetree support Sascha Hauer
2013-07-23 6:40 ` [PATCH 1/6] clk: provide static inline wrappers Sascha Hauer
2013-07-23 6:40 ` [PATCH 2/6] serial: ns16550: reorder functions to avoid forward declaration Sascha Hauer
2013-07-23 6:40 ` [PATCH 3/6] serial: ns16550: introduce private struct Sascha Hauer
2013-07-23 6:40 ` [PATCH 4/6] serial: ns16550: remove f_caps from platform_data Sascha Hauer
2013-07-23 6:40 ` [PATCH 5/6] serial: ns16550: Add clk support and make platform_data optional Sascha Hauer
2013-07-23 6:40 ` Sascha Hauer [this message]
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