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