| Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame^] | 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"); |