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author | Sergey Ryazanov <ryazanov.s.a@gmail.com> | 2014-10-29 03:18:43 +0400 |
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committer | Ralf Baechle <ralf@linux-mips.org> | 2014-11-24 07:45:27 +0100 |
commit | 1ac91b1f686e9d819b16525baf2e8db3c282edba (patch) | |
tree | 22175fa726fe35b52f562f114a41a5eb80bcb6b6 /arch/mips | |
parent | 8aaa7278c0c98a77ec36e1fed7d9bede58164a26 (diff) | |
download | op-kernel-dev-1ac91b1f686e9d819b16525baf2e8db3c282edba.zip op-kernel-dev-1ac91b1f686e9d819b16525baf2e8db3c282edba.tar.gz |
MIPS: ath25: add UART support
Signed-off-by: Sergey 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: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips')
-rw-r--r-- | arch/mips/ath25/ar2315.c | 8 | ||||
-rw-r--r-- | arch/mips/ath25/ar2315.h | 2 | ||||
-rw-r--r-- | arch/mips/ath25/ar5312.c | 8 | ||||
-rw-r--r-- | arch/mips/ath25/ar5312.h | 2 | ||||
-rw-r--r-- | arch/mips/ath25/devices.c | 31 | ||||
-rw-r--r-- | arch/mips/ath25/devices.h | 2 |
6 files changed, 53 insertions, 0 deletions
diff --git a/arch/mips/ath25/ar2315.c b/arch/mips/ath25/ar2315.c index d92aa91..d10eac4 100644 --- a/arch/mips/ath25/ar2315.c +++ b/arch/mips/ath25/ar2315.c @@ -267,3 +267,11 @@ void __init ar2315_plat_mem_setup(void) _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()); +} diff --git a/arch/mips/ath25/ar2315.h b/arch/mips/ath25/ar2315.h index da5b843..4af5f4c 100644 --- a/arch/mips/ath25/ar2315.h +++ b/arch/mips/ath25/ar2315.h @@ -6,12 +6,14 @@ void ar2315_arch_init_irq(void); void ar2315_plat_time_init(void); void ar2315_plat_mem_setup(void); +void ar2315_arch_init(void); #else static inline void ar2315_arch_init_irq(void) {} static inline void ar2315_plat_time_init(void) {} static inline void ar2315_plat_mem_setup(void) {} +static inline void ar2315_arch_init(void) {} #endif diff --git a/arch/mips/ath25/ar5312.c b/arch/mips/ath25/ar5312.c index b99a02a9..398d4fd 100644 --- a/arch/mips/ath25/ar5312.c +++ b/arch/mips/ath25/ar5312.c @@ -265,3 +265,11 @@ void __init ar5312_plat_mem_setup(void) _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()); +} diff --git a/arch/mips/ath25/ar5312.h b/arch/mips/ath25/ar5312.h index 254f04f..86dfc6d 100644 --- a/arch/mips/ath25/ar5312.h +++ b/arch/mips/ath25/ar5312.h @@ -6,12 +6,14 @@ void ar5312_arch_init_irq(void); void ar5312_plat_time_init(void); void ar5312_plat_mem_setup(void); +void ar5312_arch_init(void); #else static inline void ar5312_arch_init_irq(void) {} static inline void ar5312_plat_time_init(void) {} static inline void ar5312_plat_mem_setup(void) {} +static inline void ar5312_arch_init(void) {} #endif diff --git a/arch/mips/ath25/devices.c b/arch/mips/ath25/devices.c index 049ab44..400419d 100644 --- a/arch/mips/ath25/devices.c +++ b/arch/mips/ath25/devices.c @@ -1,10 +1,41 @@ #include <linux/kernel.h> #include <linux/init.h> +#include <linux/serial_8250.h> #include <asm/bootinfo.h> #include "devices.h" +#include "ar5312.h" +#include "ar2315.h" const char *get_system_type(void) { 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); diff --git a/arch/mips/ath25/devices.h b/arch/mips/ath25/devices.h index 2985586..23b53cb 100644 --- a/arch/mips/ath25/devices.h +++ b/arch/mips/ath25/devices.h @@ -9,6 +9,8 @@ extern void (*ath25_irq_dispatch)(void); +void ath25_serial_setup(u32 mapbase, int irq, unsigned int uartclk); + static inline bool is_ar2315(void) { return (current_cpu_data.cputype == CPU_4KEC); |