[ARM] 3383/3: ixp2000: ixdp2x01 platform serial conversion

Patch from Lennert Buytenhek

Add a PLAT8250_DEV_PLATFORM2, and convert the two ixdp2x01 CPLD serial
ports to use platform serial devices with ids PLAT8250_DEV_PLATFORM[12].
(The on-chip xscale UART is PLAT8250_DEV_PLATFORM, id #0.)

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

2 files changed, 60 insertions, 19 deletions

diff --git a/arch/arm/mach-ixp2000/ixdp2x01.c b/arch/arm/mach-ixp2000/ixdp2x01.c
index f9d4968c1d66..66915282a463 100644
--- a/arch/arm/mach-ixp2000/ixdp2x01.c
+++ b/arch/arm/mach-ixp2000/ixdp2x01.c
@@ -30,6 +30,7 @@
 #include <linux/tty.h>
 #include <linux/serial_core.h>
 #include <linux/platform_device.h>
+#include <linux/serial_8250.h>
 
 #include <asm/io.h>
 #include <asm/irq.h>
@@ -132,7 +133,7 @@ void __init ixdp2x01_init_irq(void)
 
 
 /*************************************************************************
- * IXDP2x01 memory map and serial ports
+ * IXDP2x01 memory map
  *************************************************************************/
 static struct map_desc ixdp2x01_io_desc __initdata = {
         .virtual        = IXDP2X01_VIRT_CPLD_BASE, 
@@ -141,40 +142,78 @@ static struct map_desc ixdp2x01_io_desc __initdata = {
         .type           = MT_DEVICE
 };
 
-static struct uart_port ixdp2x01_serial_ports[2] = {
+static void __init ixdp2x01_map_io(void)
+{
+        ixp2000_map_io();
+        iotable_init(&ixdp2x01_io_desc, 1);
+}
+
+
+/*************************************************************************
+ * IXDP2x01 serial ports
+ *************************************************************************/
+static struct plat_serial8250_port ixdp2x01_serial_port1[] = {
         {
-                .membase        = (char *)(IXDP2X01_UART1_VIRT_BASE),
                 .mapbase        = (unsigned long)IXDP2X01_UART1_PHYS_BASE,
+                .membase        = (char *)IXDP2X01_UART1_VIRT_BASE,
                 .irq            = IRQ_IXDP2X01_UART1,
-                .flags          = UPF_SKIP_TEST,
+                .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
                 .iotype         = UPIO_MEM32,
                 .regshift       = 2,
                 .uartclk        = IXDP2X01_UART_CLK,
-                .line           = 1,
-                .type           = PORT_16550A,
-                .fifosize       = 16
-        }, {
-                .membase        = (char *)(IXDP2X01_UART2_VIRT_BASE),
+        },
+        { }
+};
+
+static struct resource ixdp2x01_uart_resource1 = {
+        .start          = IXDP2X01_UART1_PHYS_BASE,
+        .end            = IXDP2X01_UART1_PHYS_BASE + 0xffff,
+        .flags          = IORESOURCE_MEM,
+};
+
+static struct platform_device ixdp2x01_serial_device1 = {
+        .name           = "serial8250",
+        .id             = PLAT8250_DEV_PLATFORM1,
+        .dev            = {
+                .platform_data          = ixdp2x01_serial_port1,
+        },
+        .num_resources  = 1,
+        .resource       = &ixdp2x01_uart_resource1,
+};
+
+static struct plat_serial8250_port ixdp2x01_serial_port2[] = {
+        {
                 .mapbase        = (unsigned long)IXDP2X01_UART2_PHYS_BASE,
+                .membase        = (char *)IXDP2X01_UART2_VIRT_BASE,
                 .irq            = IRQ_IXDP2X01_UART2,
-                .flags          = UPF_SKIP_TEST,
+                .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
                 .iotype         = UPIO_MEM32,
                 .regshift       = 2,
                 .uartclk        = IXDP2X01_UART_CLK,
-                .line           = 2,
-                .type           = PORT_16550A,
-                .fifosize       = 16
         }, 
+        { }
 };
 
-static void __init ixdp2x01_map_io(void)
-{
-        ixp2000_map_io();       
+static struct resource ixdp2x01_uart_resource2 = {
+        .start          = IXDP2X01_UART2_PHYS_BASE,
+        .end            = IXDP2X01_UART2_PHYS_BASE + 0xffff,
+        .flags          = IORESOURCE_MEM,
+};
 
-        iotable_init(&ixdp2x01_io_desc, 1);
+static struct platform_device ixdp2x01_serial_device2 = {
+        .name           = "serial8250",
+        .id             = PLAT8250_DEV_PLATFORM2,
+        .dev            = {
+                .platform_data          = ixdp2x01_serial_port2,
+        },
+        .num_resources  = 1,
+        .resource       = &ixdp2x01_uart_resource2,
+};
 
-        early_serial_setup(&ixdp2x01_serial_ports[0]);
-        early_serial_setup(&ixdp2x01_serial_ports[1]);
+static void ixdp2x01_uart_init(void)
+{
+        platform_device_register(&ixdp2x01_serial_device1);
+        platform_device_register(&ixdp2x01_serial_device2);
 }
 
 
@@ -374,6 +413,7 @@ static void __init ixdp2x01_init_machine(void)
 
         platform_add_devices(ixdp2x01_devices, ARRAY_SIZE(ixdp2x01_devices));
         ixp2000_uart_init();
+        ixdp2x01_uart_init();
 }
 
 
diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h
index 73b464f0926a..8e9681413726 100644
--- a/include/linux/serial_8250.h
+++ b/include/linux/serial_8250.h
@@ -37,6 +37,7 @@ enum {
         PLAT8250_DEV_LEGACY = -1,
         PLAT8250_DEV_PLATFORM,
         PLAT8250_DEV_PLATFORM1,
+        PLAT8250_DEV_PLATFORM2,
         PLAT8250_DEV_FOURPORT,
         PLAT8250_DEV_ACCENT,
         PLAT8250_DEV_BOCA,