Date: Wed, 27 Jun 2001 17:55:06 -0700
From: Frank Rowand <frank_rowand@mvista.com>
Reply-To: frowand@mvista.com
Subject: Paulus, Trini: here's how to dynamically register serial port

You guys were discussing how to get rid of all the #ifdef ... includes for
the serial ports, and wondering how to dynamically register ports.  The
interface the serial driver provides for this is early_serial_setup().
Here's an example of using it (this example uses the SERIAL_PORT_DFNS from
ppc4xx_serial.h just because it was already defined there):


        {
#include <linux/serialP.h>

                int k;
                struct serial_struct req;
                struct serial_state tmp_rs_table[RS_TABLE_SIZE] = {
                        SERIAL_PORT_DFNS   /* Defined in ppc4xx_serial.h */
                };

                for (k = 0; k < RS_TABLE_SIZE; k++) {
                        if (tmp_rs_table[k].iomem_base != 0) {

        req.baud_base       = tmp_rs_table[k].baud_base;
        req.port            = tmp_rs_table[k].port;
        req.port_high       = 0;
        req.irq             = tmp_rs_table[k].irq;
        req.flags           = tmp_rs_table[k].flags;
        req.close_delay     = tmp_rs_table[k].close_delay;
        req.io_type         = tmp_rs_table[k].io_type;
        req.hub6            = tmp_rs_table[k].hub6;
        req.iomem_base      = ioremap((int)tmp_rs_table[k].iomem_base, PAGE_SIZE);
        req.iomem_reg_shift = tmp_rs_table[k].iomem_reg_shift;
        req.type            = tmp_rs_table[k].type;
        req.xmit_fifo_size  = tmp_rs_table[k].xmit_fifo_size;
        req.custom_divisor  = tmp_rs_table[k].custom_divisor;
        req.closing_wait    = tmp_rs_table[k].closing_wait;

                                early_serial_setup(&req);
                        }
                }
        }


-Frank
--
Frank Rowand <frank_rowand@mvista.com>
MontaVista Software, Inc