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authorPatrice Chotard <patrice.chotard@st.com>2018-08-03 15:07:38 +0200
committerTom Rini <trini@konsulko.com>2018-09-10 20:20:38 -0400
commitcbf538831d4b49d914cfdd885204f2551c8608e2 (patch)
tree88e228fb4e37b585a33b21ded149756fa143fc2c /include/serial.h
parent555e378ca7658e817986e18e4a3f214a7fac60ad (diff)
dm: serial: Replace setparity by setconfig
Replace setparity by more generic setconfig ops to allow uart parity, bits word length and stop bits number change. Adds SERIAL_GET_PARITY/BITS/STOP macros. Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com> Signed-off-by: Patrice Chotard <patrice.chotard@st.com> Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include/serial.h')
-rw-r--r--include/serial.h47
1 files changed, 47 insertions, 0 deletions
diff --git a/include/serial.h b/include/serial.h
index 9cd6f10703..8b00f38280 100644
--- a/include/serial.h
+++ b/include/serial.h
@@ -73,6 +73,39 @@ enum serial_par {
SERIAL_PAR_EVEN
};
+#define SERIAL_PAR_SHIFT 0
+#define SERIAL_PAR_MASK (0x03 << SERIAL_PAR_SHIFT)
+#define SERIAL_GET_PARITY(config) \
+ ((config & SERIAL_PAR_MASK) >> SERIAL_PAR_SHIFT)
+
+enum serial_bits {
+ SERIAL_5_BITS,
+ SERIAL_6_BITS,
+ SERIAL_7_BITS,
+ SERIAL_8_BITS
+};
+
+#define SERIAL_BITS_SHIFT 2
+#define SERIAL_BITS_MASK (0x3 << SERIAL_BITS_SHIFT)
+#define SERIAL_GET_BITS(config) \
+ ((config & SERIAL_BITS_MASK) >> SERIAL_BITS_SHIFT)
+
+enum serial_stop {
+ SERIAL_HALF_STOP, /* 0.5 stop bit */
+ SERIAL_ONE_STOP, /* 1 stop bit */
+ SERIAL_ONE_HALF_STOP, /* 1.5 stop bit */
+ SERIAL_TWO_STOP /* 2 stop bit */
+};
+
+#define SERIAL_STOP_SHIFT 4
+#define SERIAL_STOP_MASK (0x3 << SERIAL_STOP_SHIFT)
+#define SERIAL_GET_STOP(config) \
+ ((config & SERIAL_STOP_MASK) >> SERIAL_STOP_SHIFT)
+
+#define SERIAL_DEFAULT_CONFIG SERIAL_PAR_NONE << SERIAL_PAR_SHIFT | \
+ SERIAL_8_BITS << SERIAL_BITS_SHIFT | \
+ SERIAL_ONE_STOP << SERIAL_STOP_SHIFT
+
/**
* struct struct dm_serial_ops - Driver model serial operations
*
@@ -159,6 +192,20 @@ struct dm_serial_ops {
* @return 0 if OK, -ve on error
*/
int (*setparity)(struct udevice *dev, enum serial_par parity);
+
+ /**
+ * setconfig() - Set up the uart configuration
+ * (parity, 5/6/7/8 bits word length, stop bits)
+ *
+ * Set up a new config for this device.
+ *
+ * @dev: Device pointer
+ * @parity: parity to use
+ * @bits: bits number to use
+ * @stop: stop bits number to use
+ * @return 0 if OK, -ve on error
+ */
+ int (*setconfig)(struct udevice *dev, uint serial_config);
};
/**