Kernel updates since December 2009

include/l4/drivers/uart/omap/uart.h

@@ -0,0 +1,62 @@
+/*
+ * OMAP UART Generic driver implementation.
+ *
+ * Copyright (C) 2007 Bahadir Balban
+ *
+ * The particular intention of this code is that it has been carefully written
+ * as decoupled from os-specific code and in a verbose way such that it clearly
+ * demonstrates how the device operates, reducing the amount of time to be spent
+ * for understanding the operational model and implementing a driver from
+ * scratch. This is the very first to be such a driver so far, hopefully it will
+ * turn out to be useful.
+ */
+
+#ifndef __OMAP_UART_H__
+#define __OMAP_UART_H__
+
+#include INC_PLAT(uart.h)
+#include INC_ARCH(io.h)
+
+/* Register offsets */
+#define OMAP_UART_DLL		0x00
+#define OMAP_UART_THR		0x00
+#define OMAP_UART_RHR		0x00
+#define OMAP_UART_DLH		0x04
+#define OMAP_UART_IER		0x04
+#define OMAP_UART_FCR		0x08
+#define OMAP_UART_MCR		0x10
+#define OMAP_UART_LSR		0x14
+#define OMAP_UART_MDR1		0x20
+#define	OMAP_UART_LCR		0x0C
+
+/* Modes supported by OMAP UART/IRDA/CIR IP */
+#define OMAP_UART_MODE_UART16X               0x0
+#define OMAP_UART_MODE_SIR                   0x1
+#define OMAP_UART_MODE_UART16X_AUTO_BAUD     0x2
+#define OMAP_UART_MODE_UART13X               0x3
+#define OMAP_UART_MODE_MIR                   0x4
+#define OMAP_UART_MODE_FIR                   0x5
+#define OMAP_UART_MODE_CIR                   0x6
+#define OMAP_UART_MODE_DEFAULT               0x7 /* Disable */
+
+/* Number of data bits for UART */
+#define OMAP_UART_DATA_BITS_5           0x0
+#define OMAP_UART_DATA_BITS_6           0x1
+#define OMAP_UART_DATA_BITS_7           0x2
+#define OMAP_UART_DATA_BITS_8           0x3
+
+/* Stop bits to be used for UART data */
+#define OMAP_UART_STOP_BITS_1           0x0
+#define OMAP_UART_STOP_BITS_1_5         0x1
+
+/* Banked Register modes- ConfigA, ConfigB, Operational */
+#define OMAP_UART_BANKED_MODE_OPERATIONAL      0x00
+#define OMAP_UART_BANKED_MODE_CONFIG_A         0x80
+#define OMAP_UART_BANKED_MODE_CONFIG_B         0xBF
+
+void uart_tx_char(unsigned long base, char c);
+char uart_rx_char(unsigned long uart_base);
+void uart_set_baudrate(unsigned long uart_base, u32 baudrate, u32 clkrate);
+void uart_init(unsigned long uart_base);
+
+#endif /* __OMAP_UART_H__ */

include/l4/drivers/uart/pl011/uart.h

@@ -0,0 +1,35 @@
+/*
+ * PL011 UART Generic driver implementation.
+ * Copyright Bahadir Balban (C) 2009
+ */
+#ifndef __PL011_H__
+#define __PL011_H__
+
+#include INC_ARCH(io.h)
+#include INC_PLAT(offsets.h)
+
+/* Register offsets */
+#define PL011_UARTDR		0x00
+#define PL011_UARTRSR		0x04
+#define PL011_UARTECR		0x04
+#define PL011_UARTFR		0x18
+#define PL011_UARTILPR		0x20
+#define PL011_UARTIBRD		0x24
+#define PL011_UARTFBRD		0x28
+#define PL011_UARTLCR_H		0x2C
+#define PL011_UARTCR		0x30
+#define PL011_UARTIFLS		0x34
+#define PL011_UARTIMSC		0x38
+#define PL011_UARTRIS		0x3C
+#define PL011_UARTMIS		0x40
+#define PL011_UARTICR		0x44
+#define PL011_UARTDMACR		0x48
+
+
+void uart_tx_char(unsigned long uart_base, char c);
+char uart_rx_char(unsigned long uart_base);
+void uart_init(unsigned long base);
+
+
+#endif /* __PL011__UART__ */
+