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Commit 1ac91b1f authored by Sergey Ryazanov's avatar Sergey Ryazanov Committed by Ralf Baechle
Browse files

MIPS: ath25: add UART support 



Signed-off-by: default avatarSergey Ryazanov <ryazanov.s.a@gmail.com>
Cc: Linux MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/8242/


Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 8aaa7278

arch/mips/ath25/ar2315.c

+8 −0
Original line number Original line Diff line number Diff line
@@ -267,3 +267,11 @@ void __init ar2315_plat_mem_setup(void) 




	_machine_restart = ar2315_restart;

	_machine_restart = ar2315_restart;

}

}



void __init ar2315_arch_init(void)

{

	unsigned irq = irq_create_mapping(ar2315_misc_irq_domain,

					  AR2315_MISC_IRQ_UART0);



	ath25_serial_setup(AR2315_UART0_BASE, irq, ar2315_apb_frequency());

}

arch/mips/ath25/ar2315.h

+2 −0
Original line number Original line Diff line number Diff line
@@ -6,12 +6,14 @@ 
void ar2315_arch_init_irq(void);

void ar2315_arch_init_irq(void);

void ar2315_plat_time_init(void);

void ar2315_plat_time_init(void);

void ar2315_plat_mem_setup(void);

void ar2315_plat_mem_setup(void);

void ar2315_arch_init(void);





#else

#else





static inline void ar2315_arch_init_irq(void) {}

static inline void ar2315_arch_init_irq(void) {}

static inline void ar2315_plat_time_init(void) {}

static inline void ar2315_plat_time_init(void) {}

static inline void ar2315_plat_mem_setup(void) {}

static inline void ar2315_plat_mem_setup(void) {}

static inline void ar2315_arch_init(void) {}





#endif

#endif

arch/mips/ath25/ar5312.c

+8 −0
Original line number Original line Diff line number Diff line
@@ -265,3 +265,11 @@ void __init ar5312_plat_mem_setup(void) 




	_machine_restart = ar5312_restart;

	_machine_restart = ar5312_restart;

}

}



void __init ar5312_arch_init(void)

{

	unsigned irq = irq_create_mapping(ar5312_misc_irq_domain,

					  AR5312_MISC_IRQ_UART0);



	ath25_serial_setup(AR5312_UART0_BASE, irq, ar5312_sys_frequency());

}

arch/mips/ath25/ar5312.h

+2 −0
Original line number Original line Diff line number Diff line
@@ -6,12 +6,14 @@ 
void ar5312_arch_init_irq(void);

void ar5312_arch_init_irq(void);

void ar5312_plat_time_init(void);

void ar5312_plat_time_init(void);

void ar5312_plat_mem_setup(void);

void ar5312_plat_mem_setup(void);

void ar5312_arch_init(void);





#else

#else





static inline void ar5312_arch_init_irq(void) {}

static inline void ar5312_arch_init_irq(void) {}

static inline void ar5312_plat_time_init(void) {}

static inline void ar5312_plat_time_init(void) {}

static inline void ar5312_plat_mem_setup(void) {}

static inline void ar5312_plat_mem_setup(void) {}

static inline void ar5312_arch_init(void) {}





#endif

#endif

arch/mips/ath25/devices.c

+31 −0
Original line number Original line Diff line number Diff line 
#include <linux/kernel.h>

#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/init.h>

#include <linux/serial_8250.h>

#include <asm/bootinfo.h>

#include <asm/bootinfo.h>





#include "devices.h"

#include "devices.h"

#include "ar5312.h"

#include "ar2315.h"





const char *get_system_type(void)

const char *get_system_type(void)

{

{

	return "Atheros (unknown)";

	return "Atheros (unknown)";

}

}



void __init ath25_serial_setup(u32 mapbase, int irq, unsigned int uartclk)

{

	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);

}



static int __init ath25_arch_init(void)

{

	if (is_ar5312())

		ar5312_arch_init();

	else

		ar2315_arch_init();



	return 0;

}



arch_initcall(ath25_arch_init);