static u32 omap_uart_read(struct vmm_chardev *cdev,
u8 *dest, u32 len, bool sleep)
{
u32 i;
struct omap_uart_port *port;
if (!(cdev && dest && cdev->priv)) {
return 0;
}
port = cdev->priv;
if (sleep) {
for (i = 0; i < len; i++) {
dest[i] = omap_uart_getc_sleepable(port);
}
} else {
for(i = 0; i < len; i++) {
if (!omap_uart_lowlevel_can_getc(port->base, port->reg_align)) {
break;
}
dest[i] = omap_uart_lowlevel_getc(port->base, port->reg_align);
}
}
return i;
}
static int omap_defterm_getc(u8 *ch)
{
if (!omap_uart_lowlevel_can_getc(omap_defterm_base, 2)) {
return VMM_EFAIL;
}
*ch = omap_uart_lowlevel_getc(omap_defterm_base, 2);
return VMM_OK;
}
u8 omap_uart_lowlevel_getc(virtual_addr_t base, u32 reg_align)
{
while (!omap_uart_lowlevel_can_getc(base, reg_align));
return (omap_serial_in(UART_RBR));
}