diff options
Diffstat (limited to 'target/linux/realtek/files/arch/rlx/bsp/serial.c')
| -rw-r--r-- | target/linux/realtek/files/arch/rlx/bsp/serial.c | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/target/linux/realtek/files/arch/rlx/bsp/serial.c b/target/linux/realtek/files/arch/rlx/bsp/serial.c new file mode 100644 index 000000000..f4e1ef19d --- /dev/null +++ b/target/linux/realtek/files/arch/rlx/bsp/serial.c @@ -0,0 +1,94 @@ +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * Copyright (C) 2006, Realtek Semiconductor Corp. + * Copyright (C) 2013, Artur Artamonov <artur@advem.lv> + */ + + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/serial.h> +#include <linux/serial_core.h> +#include <linux/serial_8250.h> +#include <linux/string.h> + +#include <asm/serial.h> + +#include "bspchip.h" + +void __init bsp_serial_init(void) +{ +#ifdef CONFIG_SERIAL_SC16IS7X0 + extern void __init sc16is7x0_get_port( struct uart_port *port ); +#endif +#if defined( CONFIG_SERIAL_SC16IS7X0 ) || defined( CONFIG_SERIAL_RTL8198_UART1 ) + unsigned int line = 0; +#else + const unsigned int line = 0; +#endif + struct uart_port s; + + /* clear memory */ + memset(&s, 0, sizeof(s)); + + /* + * UART0 + */ + s.line = line; + s.type = PORT_16550A; + s.irq = BSP_UART0_IRQ; + s.iotype = UPIO_MEM; + s.regshift = 2; +#if 1 + s.uartclk = BSP_SYS_CLK_RATE; + s.fifosize = 16; + //s.flags = UPF_SKIP_TEST | UPF_LOW_LATENCY; + s.flags = UPF_SKIP_TEST; + s.mapbase = BSP_UART0_MAP_BASE; + //s.membase = ioremap_nocache(s.mapbase, BSP_UART0_MAPSIZE); + s.membase = ioremap_nocache(s.mapbase, 0x20); +#else + s.uartclk = BSP_SYS_CLK_RATE - BSP_BAUDRATE * 24; //??? + s.fifosize = 1; //??? + s.flags = UPF_SKIP_TEST | UPF_LOW_LATENCY | UPF_SPD_CUST; + s.membase = (unsigned char *)BSP_UART0_BASE; + s.custom_divisor = BSP_SYS_CLK_RATE / (BSP_BAUDRATE * 16) - 1; +#endif + + if (early_serial_setup(&s) != 0) + { + #if defined(CONFIG_RTL_8196C) + panic("RTL8196C: bsp_serial_init failed!"); + #elif defined(CONFIG_RTL_819XD) + panic("RTL8196D: bsp_serial_init failed!"); + #endif + } +#ifdef CONFIG_SERIAL_RTL8198_UART1 + // UART1 + #define UART_BASE 0xB8000100 //0xb8002100 uart 1 + REG32(0xb8000040) = (REG32(0xb8000040) & ~(0x3<<3)) | (0x01<<3); //pin mux to UART1 + REG32(0xb8002110) |= (1<<29); //enable flow control + s.line = ++ line; + s.irq = BSP_UART1_IRQ; + s.mapbase = BSP_UART1_MAP_BASE; + s.membase = ioremap_nocache(s.mapbase, 0x20); + + if (early_serial_setup(&s) != 0) { + panic("RTL819xD: bsp_serial_init UART1 failed!"); + } +#endif + +#ifdef CONFIG_SERIAL_SC16IS7X0 + sc16is7x0_get_port( &s ); + s.line = ++ line; + + if (early_serial_setup(&s) != 0) { + panic("RTL819xD: bsp_serial_init i2c uart failed!"); + } +#endif +} |