Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / mips / bcm63xx / dev-uart.c

diff --git a/kernel/arch/mips/bcm63xx/dev-uart.c b/kernel/arch/mips/bcm63xx/dev-uart.c
new file mode 100644 (file)
index 0000000..3bc7f3b
--- /dev/null
+++ b/kernel/arch/mips/bcm63xx/dev-uart.c
@@ -0,0 +1,76 @@
+/*
+ * 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) 2008 Maxime Bizon <mbizon@freebox.fr>
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <bcm63xx_cpu.h>
+
+static struct resource uart0_resources[] = {
+       {
+               /* start & end filled at runtime */
+               .flags          = IORESOURCE_MEM,
+       },
+       {
+               /* start filled at runtime */
+               .flags          = IORESOURCE_IRQ,
+       },
+};
+
+static struct resource uart1_resources[] = {
+       {
+               /* start & end filled at runtime */
+               .flags          = IORESOURCE_MEM,
+       },
+       {
+               /* start filled at runtime */
+               .flags          = IORESOURCE_IRQ,
+       },
+};
+
+static struct platform_device bcm63xx_uart_devices[] = {
+       {
+               .name           = "bcm63xx_uart",
+               .id             = 0,
+               .num_resources  = ARRAY_SIZE(uart0_resources),
+               .resource       = uart0_resources,
+       },
+
+       {
+               .name           = "bcm63xx_uart",
+               .id             = 1,
+               .num_resources  = ARRAY_SIZE(uart1_resources),
+               .resource       = uart1_resources,
+       }
+};
+
+int __init bcm63xx_uart_register(unsigned int id)
+{
+       if (id >= ARRAY_SIZE(bcm63xx_uart_devices))
+               return -ENODEV;
+
+       if (id == 1 && (!BCMCPU_IS_3368() && !BCMCPU_IS_6358() &&
+               !BCMCPU_IS_6368()))
+               return -ENODEV;
+
+       if (id == 0) {
+               uart0_resources[0].start = bcm63xx_regset_address(RSET_UART0);
+               uart0_resources[0].end = uart0_resources[0].start +
+                       RSET_UART_SIZE - 1;
+               uart0_resources[1].start = bcm63xx_get_irq_number(IRQ_UART0);
+       }
+
+       if (id == 1) {
+               uart1_resources[0].start = bcm63xx_regset_address(RSET_UART1);
+               uart1_resources[0].end = uart1_resources[0].start +
+                       RSET_UART_SIZE - 1;
+               uart1_resources[1].start = bcm63xx_get_irq_number(IRQ_UART1);
+       }
+
+       return platform_device_register(&bcm63xx_uart_devices[id]);
+}