* will not allocate storage for arrays of size 0
*/
+#ifndef __ns16550_h
+#define __ns16550_h
+
#include <linux/types.h>
#ifdef CONFIG_DM_SERIAL
#define CONFIG_SYS_NS16550_REG_SIZE (-1)
#endif
+#ifdef CONFIG_NS16550_DYNAMIC
+#define UART_REG(x) unsigned char x
+#else
#if !defined(CONFIG_SYS_NS16550_REG_SIZE) || (CONFIG_SYS_NS16550_REG_SIZE == 0)
#error "Please define NS16550 registers size."
#elif defined(CONFIG_SYS_NS16550_MEM32) && !defined(CONFIG_DM_SERIAL)
unsigned char x; \
unsigned char postpad_##x[-CONFIG_SYS_NS16550_REG_SIZE - 1];
#endif
+#endif /* CONFIG_NS16550_DYNAMIC */
+
+enum ns16550_flags {
+ NS16550_FLAG_IO = 1 << 0, /* Use I/O access (else mem-mapped) */
+ NS16550_FLAG_ENDIAN = 1 << 1, /* Use out_le/be_32() */
+ NS16550_FLAG_BE = 1 << 2, /* Big-endian access (else little) */
+};
/**
- * struct ns16550_platdata - information about a NS16550 port
+ * struct ns16550_plat - information about a NS16550 port
*
* @base: Base register address
+ * @reg_width: IO accesses size of registers (in bytes, 1 or 4)
* @reg_shift: Shift size of registers (0=byte, 1=16bit, 2=32bit...)
+ * @reg_offset: Offset to start of registers (normally 0)
* @clock: UART base clock speed in Hz
+ * @fcr: Offset of FCR register (normally UART_FCR_DEFVAL)
+ * @flags: A few flags (enum ns16550_flags)
+ * @bdf: PCI slot/function (pci_dev_t)
*/
-struct ns16550_platdata {
+struct ns16550_plat {
unsigned long base;
+ int reg_width;
int reg_shift;
+ int reg_offset;
int clock;
+ u32 fcr;
+ int flags;
+#if defined(CONFIG_PCI) && defined(CONFIG_SPL)
+ int bdf;
+#endif
};
struct udevice;
-struct NS16550 {
+struct ns16550 {
UART_REG(rbr); /* 0 */
UART_REG(ier); /* 1 */
UART_REG(fcr); /* 2 */
UART_REG(ssr); /* 11*/
#endif
#ifdef CONFIG_DM_SERIAL
- struct ns16550_platdata *plat;
+ struct ns16550_plat *plat;
#endif
};
#define dll rbr
#define dlm ier
-typedef struct NS16550 *NS16550_t;
-
/*
* These are the definitions for the FIFO Control Register
*/
#define UART_FCR_RXSR 0x02 /* Receiver soft reset */
#define UART_FCR_TXSR 0x04 /* Transmitter soft reset */
+/* Ingenic JZ47xx specific UART-enable bit. */
+#define UART_FCR_UME 0x10
+
+/* Clear & enable FIFOs */
+#define UART_FCR_DEFVAL (UART_FCR_FIFO_EN | \
+ UART_FCR_RXSR | \
+ UART_FCR_TXSR)
+
/*
* These are the definitions for the Modem Control Register
*/
/* useful defaults for LCR */
#define UART_LCR_8N1 0x03
-void NS16550_init(NS16550_t com_port, int baud_divisor);
-void NS16550_putc(NS16550_t com_port, char c);
-char NS16550_getc(NS16550_t com_port);
-int NS16550_tstc(NS16550_t com_port);
-void NS16550_reinit(NS16550_t com_port, int baud_divisor);
+void ns16550_init(struct ns16550 *com_port, int baud_divisor);
+void ns16550_putc(struct ns16550 *com_port, char c);
+char ns16550_getc(struct ns16550 *com_port);
+int ns16550_tstc(struct ns16550 *com_port);
+void ns16550_reinit(struct ns16550 *com_port, int baud_divisor);
/**
* ns16550_calc_divisor() - calculate the divisor given clock and baud rate
* @baudrate: Required baud rate
* @return baud rate divisor that should be used
*/
-int ns16550_calc_divisor(NS16550_t port, int clock, int baudrate);
+int ns16550_calc_divisor(struct ns16550 *port, int clock, int baudrate);
/**
- * ns16550_serial_ofdata_to_platdata() - convert DT to platform data
+ * ns16550_serial_of_to_plat() - convert DT to platform data
*
* Decode a device tree node for an ns16550 device. This includes the
* register base address and register shift properties. The caller must set
* @dev: dev to decode platform data for
* @return: 0 if OK, -EINVAL on error
*/
-int ns16550_serial_ofdata_to_platdata(struct udevice *dev);
+int ns16550_serial_of_to_plat(struct udevice *dev);
/**
* ns16550_serial_probe() - probe a serial port
* These should be used by the client driver for the driver's 'ops' member
*/
extern const struct dm_serial_ops ns16550_serial_ops;
+
+#endif /* __ns16550_h */