linux/arch/mips/ath25/devices.c
Matt Redfearn 9dd79fed1b MIPS: ath25: Avoid undefined early_serial_setup() without SERIAL_8250_CONSOLE
Currently MIPS allnoconfig with CONFIG_ATH25=y fails to link due to
missing support for early_serial_setup():

  LD      vmlinux
arch/mips/ath25/devices.o: In function ath25_serial_setup':
devices.c:(.init.text+0x68): undefined reference to 'early_serial_setup'

Rather than adding dependencies to the platform to force inclusion of
SERIAL_8250_CONSOLE together with it's dependencies like TTY, HAS_IOMEM,
etc, just make ath25_serial_setup() a no-op when the dependency is not
selected in the kernel config.

Signed-off-by: Matt Redfearn <matt.redfearn@mips.com>
Cc: James Hogan <james.hogan@mips.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/17700/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2018-01-10 16:37:28 +01:00

129 lines
2.6 KiB
C

// SPDX-License-Identifier: GPL-2.0
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/serial_8250.h>
#include <linux/platform_device.h>
#include <asm/bootinfo.h>
#include <ath25_platform.h>
#include "devices.h"
#include "ar5312.h"
#include "ar2315.h"
struct ar231x_board_config ath25_board;
enum ath25_soc_type ath25_soc = ATH25_SOC_UNKNOWN;
static struct resource ath25_wmac0_res[] = {
{
.name = "wmac0_membase",
.flags = IORESOURCE_MEM,
},
{
.name = "wmac0_irq",
.flags = IORESOURCE_IRQ,
}
};
static struct resource ath25_wmac1_res[] = {
{
.name = "wmac1_membase",
.flags = IORESOURCE_MEM,
},
{
.name = "wmac1_irq",
.flags = IORESOURCE_IRQ,
}
};
static struct platform_device ath25_wmac[] = {
{
.id = 0,
.name = "ar231x-wmac",
.resource = ath25_wmac0_res,
.num_resources = ARRAY_SIZE(ath25_wmac0_res),
.dev.platform_data = &ath25_board,
},
{
.id = 1,
.name = "ar231x-wmac",
.resource = ath25_wmac1_res,
.num_resources = ARRAY_SIZE(ath25_wmac1_res),
.dev.platform_data = &ath25_board,
},
};
static const char * const soc_type_strings[] = {
[ATH25_SOC_AR5312] = "Atheros AR5312",
[ATH25_SOC_AR2312] = "Atheros AR2312",
[ATH25_SOC_AR2313] = "Atheros AR2313",
[ATH25_SOC_AR2315] = "Atheros AR2315",
[ATH25_SOC_AR2316] = "Atheros AR2316",
[ATH25_SOC_AR2317] = "Atheros AR2317",
[ATH25_SOC_AR2318] = "Atheros AR2318",
[ATH25_SOC_UNKNOWN] = "Atheros (unknown)",
};
const char *get_system_type(void)
{
if ((ath25_soc >= ARRAY_SIZE(soc_type_strings)) ||
!soc_type_strings[ath25_soc])
return soc_type_strings[ATH25_SOC_UNKNOWN];
return soc_type_strings[ath25_soc];
}
void __init ath25_serial_setup(u32 mapbase, int irq, unsigned int uartclk)
{
#ifdef CONFIG_SERIAL_8250_CONSOLE
struct uart_port s;
memset(&s, 0, sizeof(s));
s.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP;
s.iotype = UPIO_MEM32;
s.irq = irq;
s.regshift = 2;
s.mapbase = mapbase;
s.uartclk = uartclk;
early_serial_setup(&s);
#endif /* CONFIG_SERIAL_8250_CONSOLE */
}
int __init ath25_add_wmac(int nr, u32 base, int irq)
{
struct resource *res;
ath25_wmac[nr].dev.platform_data = &ath25_board;
res = &ath25_wmac[nr].resource[0];
res->start = base;
res->end = base + 0x10000 - 1;
res++;
res->start = irq;
res->end = irq;
return platform_device_register(&ath25_wmac[nr]);
}
static int __init ath25_register_devices(void)
{
if (is_ar5312())
ar5312_init_devices();
else
ar2315_init_devices();
return 0;
}
device_initcall(ath25_register_devices);
static int __init ath25_arch_init(void)
{
if (is_ar5312())
ar5312_arch_init();
else
ar2315_arch_init();
return 0;
}
arch_initcall(ath25_arch_init);