Add PrimeCell PL010 serial driver

Added driver for ARM PrimeCell PL010 UART

Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 100 insertions, 0 deletions

diff --git a/drivers/serial/serial_pl010.h b/drivers/serial/serial_pl010.h
new file mode 100644
index 0000000000..6124e0e0f7
--- /dev/null
+++ b/drivers/serial/serial_pl010.h
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2010 Matthias Kaehlcke <matthias@kaehlcke.net>
+ *
+ * (C) Copyright 2003, 2004
+ * ARM Ltd.
+ * Philippe Robin, <philippe.robin@arm.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+struct hldc_struct {
+	uint32_t ctrl;
+	uint32_t addmtchval;
+	uint32_t addmask;
+	uint32_t rxinfobuf;
+	uint32_t sts;
+};
+
+struct pl010_struct {
+	uint32_t data;
+	union {
+		uint32_t rxsts;
+		uint32_t errclr;
+	};
+	uint32_t linctrlhigh;
+	uint32_t linctrlmid;
+	uint32_t linctrllow;
+	uint32_t ctrl;
+	uint32_t flag;
+	union {
+		uint32_t intid;
+		uint32_t intclr;
+	};
+	uint32_t not_used0[2];
+	uint32_t dmactrl;
+	uint32_t not_used1[53];
+	uint32_t modemctrl;
+	uint32_t modemsts;
+	uint32_t not_used2[65];
+	struct hldc_struct hldc;
+};
+
+#define UART_PL010_RSR_OE	(1 << 3)
+#define UART_PL010_RSR_BE	(1 << 2)
+#define UART_PL010_RSR_PE	(1 << 1)
+#define UART_PL010_RSR_FE	(1 << 0)
+
+#define UART_PL010_FR_TXFE	(1 << 7)
+#define UART_PL010_FR_RXFF	(1 << 6)
+#define UART_PL010_FR_TXFF	(1 << 5)
+#define UART_PL010_FR_RXFE	(1 << 4)
+#define UART_PL010_FR_BUSY	(1 << 3)
+#define UART_PL010_FR_TMSK	(UART_PL010_FR_TXFF + UART_PL010_FR_BUSY)
+
+#define UART_PL010_CR_LPE	(1 << 7)
+#define UART_PL010_CR_RTIE	(1 << 6)
+#define UART_PL010_CR_TIE	(1 << 5)
+#define UART_PL010_CR_RIE	(1 << 4)
+#define UART_PL010_CR_MSIE	(1 << 3)
+#define UART_PL010_CR_IIRLP	(1 << 2)
+#define UART_PL010_CR_SIREN	(1 << 1)
+#define UART_PL010_CR_UARTEN	(1 << 0)
+
+#define UART_PL010_LCRH_WLEN_8	(3 << 5)
+#define UART_PL010_LCRH_WLEN_7	(2 << 5)
+#define UART_PL010_LCRH_WLEN_6	(1 << 5)
+#define UART_PL010_LCRH_WLEN_5	(0 << 5)
+#define UART_PL010_LCRH_FEN	(1 << 4)
+#define UART_PL010_LCRH_STP2	(1 << 3)
+#define UART_PL010_LCRH_EPS	(1 << 2)
+#define UART_PL010_LCRH_PEN	(1 << 1)
+#define UART_PL010_LCRH_BRK	(1 << 0)
+
+#define UART_PL010_BAUD_460800	1
+#define UART_PL010_BAUD_230400	3
+#define UART_PL010_BAUD_115200	7
+#define UART_PL010_BAUD_57600	15
+#define UART_PL010_BAUD_38400	23
+#define UART_PL010_BAUD_19200	47
+#define UART_PL010_BAUD_14400	63
+#define UART_PL010_BAUD_9600	95
+#define UART_PL010_BAUD_4800	191
+#define UART_PL010_BAUD_2400	383
+#define UART_PL010_BAUD_1200	767