serial: ns16550: Fix build error due to a typo

[oweals/u-boot.git] / drivers / serial / ns16550.c

diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c
index 57e6125de208692d4e8ba95971674823df989e0a..03beab5a14bced95741b483d52d8111043fa9856 100644 (file)
--- a/drivers/serial/ns16550.c
+++ b/drivers/serial/ns16550.c
@@ -80,7 +80,7 @@ static inline int serial_in_shift(unsigned char *addr, int shift)
 #elif defined(CONFIG_SYS_NS16550_MEM32) && defined(CONFIG_SYS_BIG_ENDIAN)
        return in_be32(addr);
 #elif defined(CONFIG_SYS_BIG_ENDIAN)
-       return readb(addr + (1 << reg_shift) - 1);
+       return readb(addr + (1 << shift) - 1);
 #else
        return readb(addr);
 #endif
@@ -118,10 +118,15 @@ static int ns16550_readb(NS16550_t port, int offset)
        ns16550_readb(com_port, addr - (unsigned char *)com_port)
 #endif
 
-int ns16550_calc_divisor(NS16550_t port, int clock, int baudrate)
+static inline int calc_divisor(NS16550_t port, int clock, int baudrate)
 {
        const unsigned int mode_x_div = 16;
 
+       return DIV_ROUND_CLOSEST(clock, mode_x_div * baudrate);
+}
+
+int ns16550_calc_divisor(NS16550_t port, int clock, int baudrate)
+{
 #ifdef CONFIG_OMAP1510
        /* If can't cleanly clock 115200 set div to 1 */
        if ((clock == 12000000) && (baudrate == 115200)) {
@@ -131,7 +136,7 @@ int ns16550_calc_divisor(NS16550_t port, int clock, int baudrate)
        port->osc_12m_sel = 0;                  /* clear if previsouly set */
 #endif
 
-       return DIV_ROUND_CLOSEST(clock, mode_x_div * baudrate);
+       return calc_divisor(port, clock, baudrate);
 }
 
 static void NS16550_setbrg(NS16550_t com_port, int baud_divisor)
@@ -231,6 +236,47 @@ int NS16550_tstc(NS16550_t com_port)
 
 #endif /* CONFIG_NS16550_MIN_FUNCTIONS */
 
+#ifdef CONFIG_DEBUG_UART_NS16550
+
+#include <debug_uart.h>
+
+void debug_uart_init(void)
+{
+       struct NS16550 *com_port = (struct NS16550 *)CONFIG_DEBUG_UART_BASE;
+       int baud_divisor;
+
+       /*
+        * We copy the code from above because it is already horribly messy.
+        * Trying to refactor to nicely remove the duplication doesn't seem
+        * feasible. The better fix is to move all users of this driver to
+        * driver model.
+        */
+       baud_divisor = calc_divisor(com_port, CONFIG_DEBUG_UART_CLOCK,
+                                   CONFIG_BAUDRATE);
+
+       serial_out_shift(&com_port->ier, 0, CONFIG_SYS_NS16550_IER);
+       serial_out_shift(&com_port->mcr, 0, UART_MCRVAL);
+       serial_out_shift(&com_port->fcr, 0, UART_FCRVAL);
+
+       serial_out_shift(&com_port->lcr, 0, UART_LCR_BKSE | UART_LCRVAL);
+       serial_out_shift(&com_port->dll, 0, baud_divisor & 0xff);
+       serial_out_shift(&com_port->dlm, 0, (baud_divisor >> 8) & 0xff);
+       serial_out_shift(&com_port->lcr, 0, UART_LCRVAL);
+}
+
+static inline void _debug_uart_putc(int ch)
+{
+       struct NS16550 *com_port = (struct NS16550 *)CONFIG_DEBUG_UART_BASE;
+
+       while (!(serial_in_shift(&com_port->lsr, 0) & UART_LSR_THRE))
+               ;
+       serial_out_shift(&com_port->thr, 0, ch);
+}
+
+DEBUG_UART_FUNCS
+
+#endif
+
 #ifdef CONFIG_DM_SERIAL
 static int ns16550_serial_putc(struct udevice *dev, const char ch)
 {