ns9xxx: move registration of serial8250 to a dedicated file
Now the needed structs are allocated dynamically from __init code reducing
memory usage if the kernel runs on a board different from a9m9750dev.
Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
diff --git a/arch/arm/mach-ns9xxx/Kconfig b/arch/arm/mach-ns9xxx/Kconfig
index 8584ed1..83c0efa 100644
--- a/arch/arm/mach-ns9xxx/Kconfig
+++ b/arch/arm/mach-ns9xxx/Kconfig
@@ -2,6 +2,9 @@
menu "NS9xxx Implementations"
+config NS9XXX_HAVE_SERIAL8250
+ bool
+
config MACH_CC9P9360DEV
bool "ConnectCore 9P 9360 on an A9M9750 Devboard"
select PROCESSOR_NS9360
@@ -23,6 +26,7 @@
config BOARD_A9M9750DEV
bool
+ select NS9XXX_HAVE_SERIAL8250
config BOARD_JSCC9P9360
bool
diff --git a/arch/arm/mach-ns9xxx/Makefile b/arch/arm/mach-ns9xxx/Makefile
index 6fb82b8..ca2c68d 100644
--- a/arch/arm/mach-ns9xxx/Makefile
+++ b/arch/arm/mach-ns9xxx/Makefile
@@ -5,3 +5,6 @@
obj-$(CONFIG_BOARD_A9M9750DEV) += board-a9m9750dev.o
obj-$(CONFIG_BOARD_JSCC9P9360) += board-jscc9p9360.o
+
+# platform devices
+obj-$(CONFIG_NS9XXX_HAVE_SERIAL8250) += plat-serial8250.o
diff --git a/arch/arm/mach-ns9xxx/board-a9m9750dev.c b/arch/arm/mach-ns9xxx/board-a9m9750dev.c
index 0f65177..14a06da 100644
--- a/arch/arm/mach-ns9xxx/board-a9m9750dev.c
+++ b/arch/arm/mach-ns9xxx/board-a9m9750dev.c
@@ -8,8 +8,6 @@
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*/
-#include <linux/platform_device.h>
-#include <linux/serial_8250.h>
#include <linux/irq.h>
#include <asm/mach/map.h>
@@ -126,59 +124,6 @@
a9m9750dev_fpga_demux_handler);
}
-static struct plat_serial8250_port board_a9m9750dev_serial8250_port[] = {
- {
- .iobase = FPGA_UARTA_BASE,
- .membase = (unsigned char*)FPGA_UARTA_BASE,
- .mapbase = FPGA_UARTA_BASE,
- .irq = IRQ_FPGA_UARTA,
- .iotype = UPIO_MEM,
- .uartclk = 18432000,
- .regshift = 0,
- .flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ,
- }, {
- .iobase = FPGA_UARTB_BASE,
- .membase = (unsigned char*)FPGA_UARTB_BASE,
- .mapbase = FPGA_UARTB_BASE,
- .irq = IRQ_FPGA_UARTB,
- .iotype = UPIO_MEM,
- .uartclk = 18432000,
- .regshift = 0,
- .flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ,
- }, {
- .iobase = FPGA_UARTC_BASE,
- .membase = (unsigned char*)FPGA_UARTC_BASE,
- .mapbase = FPGA_UARTC_BASE,
- .irq = IRQ_FPGA_UARTC,
- .iotype = UPIO_MEM,
- .uartclk = 18432000,
- .regshift = 0,
- .flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ,
- }, {
- .iobase = FPGA_UARTD_BASE,
- .membase = (unsigned char*)FPGA_UARTD_BASE,
- .mapbase = FPGA_UARTD_BASE,
- .irq = IRQ_FPGA_UARTD,
- .iotype = UPIO_MEM,
- .uartclk = 18432000,
- .regshift = 0,
- .flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ,
- }, {
- /* end marker */
- },
-};
-
-static struct platform_device board_a9m9750dev_serial_device = {
- .name = "serial8250",
- .dev = {
- .platform_data = board_a9m9750dev_serial8250_port,
- },
-};
-
-static struct platform_device *board_a9m9750dev_devices[] __initdata = {
- &board_a9m9750dev_serial_device,
-};
-
void __init board_a9m9750dev_init_machine(void)
{
u32 reg;
@@ -210,7 +155,4 @@
__raw_writel(0x2, MEM_SMOED(0));
__raw_writel(0x6, MEM_SMRD(0));
__raw_writel(0x6, MEM_SMWD(0));
-
- platform_add_devices(board_a9m9750dev_devices,
- ARRAY_SIZE(board_a9m9750dev_devices));
}
diff --git a/arch/arm/mach-ns9xxx/plat-serial8250.c b/arch/arm/mach-ns9xxx/plat-serial8250.c
new file mode 100644
index 0000000..5aa5d9b
--- /dev/null
+++ b/arch/arm/mach-ns9xxx/plat-serial8250.c
@@ -0,0 +1,69 @@
+/*
+ * arch/arm/mach-ns9xxx/plat-serial8250.c
+ *
+ * Copyright (C) 2008 by Digi International Inc.
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+#include <linux/platform_device.h>
+#include <linux/serial_8250.h>
+
+#include <asm/arch-ns9xxx/regs-board-a9m9750dev.h>
+#include <asm/arch-ns9xxx/board.h>
+
+#define DRIVER_NAME "serial8250"
+
+static int __init ns9xxx_plat_serial8250_init(void)
+{
+ struct plat_serial8250_port *pdata;
+ struct platform_device *pdev;
+ int ret = -ENOMEM;
+ int i;
+
+ if (!board_is_a9m9750dev())
+ return -ENODEV;
+
+ pdev = platform_device_alloc(DRIVER_NAME, 0);
+ if (!pdev)
+ goto err;
+
+ pdata = kzalloc(5 * sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ goto err;
+
+ pdev->dev.platform_data = pdata;
+
+ pdata[0].iobase = FPGA_UARTA_BASE;
+ pdata[1].iobase = FPGA_UARTB_BASE;
+ pdata[2].iobase = FPGA_UARTC_BASE;
+ pdata[3].iobase = FPGA_UARTD_BASE;
+
+ for (i = 0; i < 4; ++i) {
+ pdata[i].membase = (void __iomem *)pdata[i].iobase;
+ pdata[i].mapbase = pdata[i].iobase;
+ pdata[i].iotype = UPIO_MEM;
+ pdata[i].uartclk = 18432000;
+ pdata[i].flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
+ }
+
+ pdata[0].irq = IRQ_FPGA_UARTA;
+ pdata[1].irq = IRQ_FPGA_UARTB;
+ pdata[2].irq = IRQ_FPGA_UARTC;
+ pdata[3].irq = IRQ_FPGA_UARTD;
+
+ ret = platform_device_add(pdev);
+ if (ret) {
+err:
+ platform_device_put(pdev);
+
+ printk(KERN_WARNING "Could not add %s (errno=%d)\n",
+ DRIVER_NAME, ret);
+ }
+
+ return 0;
+}
+
+arch_initcall(ns9xxx_plat_serial8250_init);