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Linux/arch/mips/bcm47xx/serial.c

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  1 /*
  2  * This file is subject to the terms and conditions of the GNU General Public
  3  * License.  See the file "COPYING" in the main directory of this archive
  4  * for more details.
  5  *
  6  * Copyright (C) 2007 Aurelien Jarno <aurelien@aurel32.net>
  7  */
  8 
  9 #include <linux/module.h>
 10 #include <linux/init.h>
 11 #include <linux/serial.h>
 12 #include <linux/serial_8250.h>
 13 #include <linux/ssb/ssb.h>
 14 #include <bcm47xx.h>
 15 
 16 static struct plat_serial8250_port uart8250_data[5];
 17 
 18 static struct platform_device uart8250_device = {
 19         .name                   = "serial8250",
 20         .id                     = PLAT8250_DEV_PLATFORM,
 21         .dev                    = {
 22                 .platform_data  = uart8250_data,
 23         },
 24 };
 25 
 26 #ifdef CONFIG_BCM47XX_SSB
 27 static int __init uart8250_init_ssb(void)
 28 {
 29         int i;
 30         struct ssb_mipscore *mcore = &(bcm47xx_bus.ssb.mipscore);
 31 
 32         memset(&uart8250_data, 0,  sizeof(uart8250_data));
 33 
 34         for (i = 0; i < mcore->nr_serial_ports &&
 35                     i < ARRAY_SIZE(uart8250_data) - 1; i++) {
 36                 struct plat_serial8250_port *p = &(uart8250_data[i]);
 37                 struct ssb_serial_port *ssb_port = &(mcore->serial_ports[i]);
 38 
 39                 p->mapbase = (unsigned int) ssb_port->regs;
 40                 p->membase = (void *) ssb_port->regs;
 41                 p->irq = ssb_port->irq + 2;
 42                 p->uartclk = ssb_port->baud_base;
 43                 p->regshift = ssb_port->reg_shift;
 44                 p->iotype = UPIO_MEM;
 45                 p->flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
 46         }
 47         return platform_device_register(&uart8250_device);
 48 }
 49 #endif
 50 
 51 #ifdef CONFIG_BCM47XX_BCMA
 52 static int __init uart8250_init_bcma(void)
 53 {
 54         int i;
 55         struct bcma_drv_cc *cc = &(bcm47xx_bus.bcma.bus.drv_cc);
 56 
 57         memset(&uart8250_data, 0,  sizeof(uart8250_data));
 58 
 59         for (i = 0; i < cc->nr_serial_ports &&
 60                     i < ARRAY_SIZE(uart8250_data) - 1; i++) {
 61                 struct plat_serial8250_port *p = &(uart8250_data[i]);
 62                 struct bcma_serial_port *bcma_port;
 63                 bcma_port = &(cc->serial_ports[i]);
 64 
 65                 p->mapbase = (unsigned int) bcma_port->regs;
 66                 p->membase = (void *) bcma_port->regs;
 67                 p->irq = bcma_port->irq;
 68                 p->uartclk = bcma_port->baud_base;
 69                 p->regshift = bcma_port->reg_shift;
 70                 p->iotype = UPIO_MEM;
 71                 p->flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
 72         }
 73         return platform_device_register(&uart8250_device);
 74 }
 75 #endif
 76 
 77 static int __init uart8250_init(void)
 78 {
 79         switch (bcm47xx_bus_type) {
 80 #ifdef CONFIG_BCM47XX_SSB
 81         case BCM47XX_BUS_TYPE_SSB:
 82                 return uart8250_init_ssb();
 83 #endif
 84 #ifdef CONFIG_BCM47XX_BCMA
 85         case BCM47XX_BUS_TYPE_BCMA:
 86                 return uart8250_init_bcma();
 87 #endif
 88         }
 89         return -EINVAL;
 90 }
 91 
 92 module_init(uart8250_init);
 93 
 94 MODULE_AUTHOR("Aurelien Jarno <aurelien@aurel32.net>");
 95 MODULE_LICENSE("GPL");
 96 MODULE_DESCRIPTION("8250 UART probe driver for the BCM47XX platforms");
 97 

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