Changes in kernel/genarch/src/drivers/ns16550/ns16550.c [39e1b9a:28a5ebd] in mainline

File:

• kernel/genarch/src/drivers/ns16550/ns16550.c (modified) (1 diff)

kernel/genarch/src/drivers/ns16550/ns16550.c

@@ -112 +112 @@
 }
 
-static void ns16550_write(outdev_t *dev, const char *s, size_t n)
+static void ns16550_putuchar(outdev_t *dev, char32_t ch)
 {
         ns16550_instance_t *instance = (ns16550_instance_t *) dev->data;
 
-        if (instance->parea.mapped && !console_override)
-                return;
-
-        const char *top = s + n;
-        assert(top >= s);
-
-        for (; s < top; s++) {
-                if (*s == '\n')
+        if ((!instance->parea.mapped) || (console_override)) {
+                if (ch == '\n')
                         ns16550_sendb(instance, '\r');
 
-                ns16550_sendb(instance, (uint8_t) *s);
+                if (ascii_check(ch))
+                        ns16550_sendb(instance, (uint8_t) ch);
+                else
+                        ns16550_sendb(instance, U_SPECIAL);
         }
 }
 
 static outdev_operations_t ns16550_ops = {
-        .write = ns16550_write,
+        .write = ns16550_putuchar,
         .redraw = NULL
 };
-
-/** Configure ns16550 transmission format.
- *
- * @param instance   NS 16550 driver instance.
- * @param baud_rate  Transmission speed in bits per second, also known as baud,
- *                   maximum value is 115200.
- * @param lcr_format Line Control Register configuration bits, as defined by
- *                   the @c LCR_ macros.  These configure the word width,
- *                   parity type, and stop bit count.
- */
-void ns16550_format_set(ns16550_instance_t *instance,
-    unsigned baud_rate, uint8_t lcr_format)
-{
-        uint16_t divisor;
-
-        divisor = (uint16_t)(NS156440_CLOCK / baud_rate);
-        if (divisor == 0)
-                divisor = 1;  /* Avoid division by zero. */
-
-        ns16550_reg_write(instance, NS16550_REG_LCR, LCR_DLAB);
-        ns16550_reg_write(instance, NS16550_REG_DLL, divisor & 0xFF);
-        ns16550_reg_write(instance, NS16550_REG_DLH, (divisor >> 8) & 0xFF);
-        ns16550_reg_write(instance, NS16550_REG_LCR, lcr_format & ~LCR_DLAB);
-}
 
 /** Initialize ns16550.