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