[PATCH v2 6/6] can: sja1000: of: add reg-io-width property for 8, 16 and 32-bit register access
From: Florian Vaussard <hidden>
Date: 2014-01-31 10:35:36
Also in:
linux-can, lkml
Subsystem:
can network drivers, the rest · Maintainers:
Marc Kleine-Budde, Vincent Mailhol, Linus Torvalds
Add the 'reg-io-width' property for 8, 16 and 32-bit access, like
what is currently done with IORESOURCE_MEM_{8,16,32}BIT for non-OF
boot.
Signed-off-by: Florian Vaussard <redacted>
---
drivers/net/can/sja1000/sja1000_platform.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/net/can/sja1000/sja1000_platform.c b/drivers/net/can/sja1000/sja1000_platform.c
index 96a92a1..62ebc3d 100644
--- a/drivers/net/can/sja1000/sja1000_platform.c
+++ b/drivers/net/can/sja1000/sja1000_platform.c@@ -103,8 +103,17 @@ static void sp_populate_of(struct sja1000_priv *priv, struct device_node *of) int err; u32 prop; - priv->read_reg = sp_read_reg8; - priv->write_reg = sp_write_reg8; + of_property_read_u32(of, "reg-io-width", &prop); + if (prop == 4) { + priv->read_reg = sp_read_reg32; + priv->write_reg = sp_write_reg32; + } else if (prop == 2) { + priv->read_reg = sp_read_reg16; + priv->write_reg = sp_write_reg16; + } else { + priv->read_reg = sp_read_reg8; + priv->write_reg = sp_write_reg8; + } err = of_property_read_u32(of, "nxp,external-clock-frequency", &prop); if (!err)
--
1.8.1.2