Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / mips / bcm47xx / serial.c

diff --git a/kernel/arch/mips/bcm47xx/serial.c b/kernel/arch/mips/bcm47xx/serial.c
new file mode 100644 (file)
index 0000000..df761d3
--- /dev/null
+++ b/kernel/arch/mips/bcm47xx/serial.c
@@ -0,0 +1,96 @@
+/*
+ * 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");