[PATCH] ARM: 2793/1: platform serial support for ixp2000

Patch from Lennert Buytenhek

This patch converts the ixp2000 serial port over to a platform
serial device.

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

5 files changed, 44 insertions, 15 deletions

diff --git a/arch/arm/mach-ixp2000/core.c b/arch/arm/mach-ixp2000/core.c
index 4b9d841e04c1..45b18658499f 100644
--- a/arch/arm/mach-ixp2000/core.c
+++ b/arch/arm/mach-ixp2000/core.c
@@ -23,7 +23,7 @@
 #include <linux/serial.h>
 #include <linux/tty.h>
 #include <linux/bitops.h>
-#include <linux/serial_core.h>
+#include <linux/serial_8250.h>
 #include <linux/mm.h>
 
 #include <asm/types.h>
@@ -125,19 +125,6 @@ static struct map_desc ixp2000_io_desc[] __initdata = {
         }
 };
 
-static struct uart_port ixp2000_serial_port = {
-        .membase        = (char *)(IXP2000_UART_VIRT_BASE + 3),
-        .mapbase        = IXP2000_UART_PHYS_BASE + 3,
-        .irq            = IRQ_IXP2000_UART,
-        .flags          = UPF_SKIP_TEST,
-        .iotype         = UPIO_MEM,
-        .regshift       = 2,
-        .uartclk        = 50000000,
-        .line           = 0,
-        .type           = PORT_XSCALE,
-        .fifosize       = 16
-};
-
 void __init ixp2000_map_io(void)
 {
         extern unsigned int processor_id;
@@ -157,12 +144,50 @@ void __init ixp2000_map_io(void)
         }
 
         iotable_init(ixp2000_io_desc, ARRAY_SIZE(ixp2000_io_desc));
-        early_serial_setup(&ixp2000_serial_port);
 
         /* Set slowport to 8-bit mode.  */
         ixp2000_reg_write(IXP2000_SLOWPORT_FRM, 1);
 }
 
+
+/*************************************************************************
+ * Serial port support for IXP2000
+ *************************************************************************/
+static struct plat_serial8250_port ixp2000_serial_port[] = {
+        {
+                .mapbase        = IXP2000_UART_PHYS_BASE,
+                .membase        = (char *)(IXP2000_UART_VIRT_BASE + 3),
+                .irq            = IRQ_IXP2000_UART,
+                .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
+                .iotype         = UPIO_MEM,
+                .regshift       = 2,
+                .uartclk        = 50000000,
+        },
+        { },
+};
+
+static struct resource ixp2000_uart_resource = {
+        .start          = IXP2000_UART_PHYS_BASE,
+        .end            = IXP2000_UART_PHYS_BASE + 0xffff,
+        .flags          = IORESOURCE_MEM,
+};
+
+static struct platform_device ixp2000_serial_device = {
+        .name           = "serial8250",
+        .id             = 0,
+        .dev            = {
+                .platform_data          = ixp2000_serial_port,
+        },
+        .num_resources  = 1,
+        .resource       = &ixp2000_uart_resource,
+};
+
+void __init ixp2000_uart_init(void)
+{
+        platform_device_register(&ixp2000_serial_device);
+}
+
+
 /*************************************************************************
  * Timer-tick functions for IXP2000
  *************************************************************************/
diff --git a/arch/arm/mach-ixp2000/enp2611.c b/arch/arm/mach-ixp2000/enp2611.c
index b7ebf3898fc5..9aa54de44740 100644
--- a/arch/arm/mach-ixp2000/enp2611.c
+++ b/arch/arm/mach-ixp2000/enp2611.c
@@ -219,6 +219,7 @@ static struct platform_device *enp2611_devices[] __initdata = {
 static void __init enp2611_init_machine(void)
 {
         platform_add_devices(enp2611_devices, ARRAY_SIZE(enp2611_devices));
+        ixp2000_uart_init();
 }
 
 
diff --git a/arch/arm/mach-ixp2000/ixdp2x00.c b/arch/arm/mach-ixp2000/ixdp2x00.c
index 5e4380747b53..a43369ad876c 100644
--- a/arch/arm/mach-ixp2000/ixdp2x00.c
+++ b/arch/arm/mach-ixp2000/ixdp2x00.c
@@ -303,5 +303,6 @@ void __init ixdp2x00_init_machine(void)
         gpio_line_config(IXDP2X00_GPIO_I2C_ENABLE, GPIO_OUT);
 
         platform_add_devices(ixdp2x00_devices, ARRAY_SIZE(ixdp2x00_devices));
+        ixp2000_uart_init();
 }
 
diff --git a/arch/arm/mach-ixp2000/ixdp2x01.c b/arch/arm/mach-ixp2000/ixdp2x01.c
index c73588743ee1..43447dad1657 100644
--- a/arch/arm/mach-ixp2000/ixdp2x01.c
+++ b/arch/arm/mach-ixp2000/ixdp2x01.c
@@ -370,6 +370,7 @@ static void __init ixdp2x01_init_machine(void)
                 ((*IXDP2X01_CPLD_FLASH_REG & IXDP2X01_CPLD_FLASH_BANK_MASK) + 1);
 
         platform_add_devices(ixdp2x01_devices, ARRAY_SIZE(ixdp2x01_devices));
+        ixp2000_uart_init();
 }
 
 
diff --git a/include/asm-arm/arch-ixp2000/platform.h b/include/asm-arm/arch-ixp2000/platform.h
index 52ded516ea5c..c0caf3e3e6fd 100644
--- a/include/asm-arm/arch-ixp2000/platform.h
+++ b/include/asm-arm/arch-ixp2000/platform.h
@@ -115,6 +115,7 @@ static inline unsigned int ixp2000_is_pcimaster(void)
 }
 
 void ixp2000_map_io(void);
+void ixp2000_uart_init(void);
 void ixp2000_init_irq(void);
 void ixp2000_init_time(unsigned long);
 unsigned long ixp2000_gettimeoffset(void);