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kernel/linux-imx6_3.14.28/arch/mips/bcm47xx/serial.c 2.48 KB
6b13f685e   김민수   BSP 최초 추가
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  /*
   * This file is subject to the terms and conditions of the GNU General Public
   * License.  See the file "COPYING" in the main directory of this archive
   * for more details.
   *
   * Copyright (C) 2007 Aurelien Jarno <aurelien@aurel32.net>
   */
  
  #include <linux/module.h>
  #include <linux/init.h>
  #include <linux/serial.h>
  #include <linux/serial_8250.h>
  #include <linux/ssb/ssb.h>
  #include <bcm47xx.h>
  
  static struct plat_serial8250_port uart8250_data[5];
  
  static struct platform_device uart8250_device = {
  	.name			= "serial8250",
  	.id			= PLAT8250_DEV_PLATFORM,
  	.dev			= {
  		.platform_data	= uart8250_data,
  	},
  };
  
  #ifdef CONFIG_BCM47XX_SSB
  static int __init uart8250_init_ssb(void)
  {
  	int i;
  	struct ssb_mipscore *mcore = &(bcm47xx_bus.ssb.mipscore);
  
  	memset(&uart8250_data, 0,  sizeof(uart8250_data));
  
  	for (i = 0; i < mcore->nr_serial_ports &&
  		    i < ARRAY_SIZE(uart8250_data) - 1; i++) {
  		struct plat_serial8250_port *p = &(uart8250_data[i]);
  		struct ssb_serial_port *ssb_port = &(mcore->serial_ports[i]);
  
  		p->mapbase = (unsigned int) ssb_port->regs;
  		p->membase = (void *) ssb_port->regs;
  		p->irq = ssb_port->irq + 2;
  		p->uartclk = ssb_port->baud_base;
  		p->regshift = ssb_port->reg_shift;
  		p->iotype = UPIO_MEM;
  		p->flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
  	}
  	return platform_device_register(&uart8250_device);
  }
  #endif
  
  #ifdef CONFIG_BCM47XX_BCMA
  static int __init uart8250_init_bcma(void)
  {
  	int i;
  	struct bcma_drv_cc *cc = &(bcm47xx_bus.bcma.bus.drv_cc);
  
  	memset(&uart8250_data, 0,  sizeof(uart8250_data));
  
  	for (i = 0; i < cc->nr_serial_ports &&
  		    i < ARRAY_SIZE(uart8250_data) - 1; i++) {
  		struct plat_serial8250_port *p = &(uart8250_data[i]);
  		struct bcma_serial_port *bcma_port;
  		bcma_port = &(cc->serial_ports[i]);
  
  		p->mapbase = (unsigned int) bcma_port->regs;
  		p->membase = (void *) bcma_port->regs;
  		p->irq = bcma_port->irq;
  		p->uartclk = bcma_port->baud_base;
  		p->regshift = bcma_port->reg_shift;
  		p->iotype = UPIO_MEM;
  		p->flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
  	}
  	return platform_device_register(&uart8250_device);
  }
  #endif
  
  static int __init uart8250_init(void)
  {
  	switch (bcm47xx_bus_type) {
  #ifdef CONFIG_BCM47XX_SSB
  	case BCM47XX_BUS_TYPE_SSB:
  		return uart8250_init_ssb();
  #endif
  #ifdef CONFIG_BCM47XX_BCMA
  	case BCM47XX_BUS_TYPE_BCMA:
  		return uart8250_init_bcma();
  #endif
  	}
  	return -EINVAL;
  }
  
  module_init(uart8250_init);
  
  MODULE_AUTHOR("Aurelien Jarno <aurelien@aurel32.net>");
  MODULE_LICENSE("GPL");
  MODULE_DESCRIPTION("8250 UART probe driver for the BCM47XX platforms");