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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2013-07-22 21:55:36 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2013-07-23 08:32:49 +0200 |
| commit | c841e7a26211459718552353d3aecdf2db686682 (patch) | |
| tree | a9529360111e3b4caf8cfd0880652ca1cb6e584a | |
| parent | 4b557daac9ca11b9ee4af54657caeb5674dd26fc (diff) | |
| download | barebox-c841e7a26211459718552353d3aecdf2db686682.tar.gz barebox-c841e7a26211459718552353d3aecdf2db686682.tar.xz | |
serial: ns16550: Add devicetree probe support
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| -rw-r--r-- | drivers/serial/serial_ns16550.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/serial/serial_ns16550.c b/drivers/serial/serial_ns16550.c index b010785757..ad3125ac04 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); |