diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/powerpc/kernel/udbg_16550.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/powerpc/kernel/udbg_16550.c | 351 |
1 files changed, 0 insertions, 351 deletions
diff --git a/ANDROID_3.4.5/arch/powerpc/kernel/udbg_16550.c b/ANDROID_3.4.5/arch/powerpc/kernel/udbg_16550.c deleted file mode 100644 index 6837f839..00000000 --- a/ANDROID_3.4.5/arch/powerpc/kernel/udbg_16550.c +++ /dev/null @@ -1,351 +0,0 @@ -/* - * udbg for NS16550 compatible serial ports - * - * Copyright (C) 2001-2005 PPC 64 Team, IBM Corp - * - * 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. - */ -#include <linux/types.h> -#include <asm/udbg.h> -#include <asm/io.h> -#include <asm/reg_a2.h> - -extern u8 real_readb(volatile u8 __iomem *addr); -extern void real_writeb(u8 data, volatile u8 __iomem *addr); -extern u8 real_205_readb(volatile u8 __iomem *addr); -extern void real_205_writeb(u8 data, volatile u8 __iomem *addr); - -struct NS16550 { - /* this struct must be packed */ - unsigned char rbr; /* 0 */ - unsigned char ier; /* 1 */ - unsigned char fcr; /* 2 */ - unsigned char lcr; /* 3 */ - unsigned char mcr; /* 4 */ - unsigned char lsr; /* 5 */ - unsigned char msr; /* 6 */ - unsigned char scr; /* 7 */ -}; - -#define thr rbr -#define iir fcr -#define dll rbr -#define dlm ier -#define dlab lcr - -#define LSR_DR 0x01 /* Data ready */ -#define LSR_OE 0x02 /* Overrun */ -#define LSR_PE 0x04 /* Parity error */ -#define LSR_FE 0x08 /* Framing error */ -#define LSR_BI 0x10 /* Break */ -#define LSR_THRE 0x20 /* Xmit holding register empty */ -#define LSR_TEMT 0x40 /* Xmitter empty */ -#define LSR_ERR 0x80 /* Error */ - -#define LCR_DLAB 0x80 - -static struct NS16550 __iomem *udbg_comport; - -static void udbg_550_flush(void) -{ - if (udbg_comport) { - while ((in_8(&udbg_comport->lsr) & LSR_THRE) == 0) - /* wait for idle */; - } -} - -static void udbg_550_putc(char c) -{ - if (udbg_comport) { - if (c == '\n') - udbg_550_putc('\r'); - udbg_550_flush(); - out_8(&udbg_comport->thr, c); - } -} - -static int udbg_550_getc_poll(void) -{ - if (udbg_comport) { - if ((in_8(&udbg_comport->lsr) & LSR_DR) != 0) - return in_8(&udbg_comport->rbr); - else - return -1; - } - return -1; -} - -static int udbg_550_getc(void) -{ - if (udbg_comport) { - while ((in_8(&udbg_comport->lsr) & LSR_DR) == 0) - /* wait for char */; - return in_8(&udbg_comport->rbr); - } - return -1; -} - -void udbg_init_uart(void __iomem *comport, unsigned int speed, - unsigned int clock) -{ - unsigned int dll, base_bauds; - - if (clock == 0) - clock = 1843200; - if (speed == 0) - speed = 9600; - - base_bauds = clock / 16; - dll = base_bauds / speed; - - if (comport) { - udbg_comport = (struct NS16550 __iomem *)comport; - out_8(&udbg_comport->lcr, 0x00); - out_8(&udbg_comport->ier, 0xff); - out_8(&udbg_comport->ier, 0x00); - out_8(&udbg_comport->lcr, LCR_DLAB); - out_8(&udbg_comport->dll, dll & 0xff); - out_8(&udbg_comport->dlm, dll >> 8); - /* 8 data, 1 stop, no parity */ - out_8(&udbg_comport->lcr, 0x03); - /* RTS/DTR */ - out_8(&udbg_comport->mcr, 0x03); - /* Clear & enable FIFOs */ - out_8(&udbg_comport->fcr ,0x07); - udbg_putc = udbg_550_putc; - udbg_flush = udbg_550_flush; - udbg_getc = udbg_550_getc; - udbg_getc_poll = udbg_550_getc_poll; - } -} - -unsigned int udbg_probe_uart_speed(void __iomem *comport, unsigned int clock) -{ - unsigned int dll, dlm, divisor, prescaler, speed; - u8 old_lcr; - struct NS16550 __iomem *port = comport; - - old_lcr = in_8(&port->lcr); - - /* select divisor latch registers. */ - out_8(&port->lcr, LCR_DLAB); - - /* now, read the divisor */ - dll = in_8(&port->dll); - dlm = in_8(&port->dlm); - divisor = dlm << 8 | dll; - - /* check prescaling */ - if (in_8(&port->mcr) & 0x80) - prescaler = 4; - else - prescaler = 1; - - /* restore the LCR */ - out_8(&port->lcr, old_lcr); - - /* calculate speed */ - speed = (clock / prescaler) / (divisor * 16); - - /* sanity check */ - if (speed > (clock / 16)) - speed = 9600; - - return speed; -} - -#ifdef CONFIG_PPC_MAPLE -void udbg_maple_real_flush(void) -{ - if (udbg_comport) { - while ((real_readb(&udbg_comport->lsr) & LSR_THRE) == 0) - /* wait for idle */; - } -} - -void udbg_maple_real_putc(char c) -{ - if (udbg_comport) { - if (c == '\n') - udbg_maple_real_putc('\r'); - udbg_maple_real_flush(); - real_writeb(c, &udbg_comport->thr); eieio(); - } -} - -void __init udbg_init_maple_realmode(void) -{ - udbg_comport = (struct NS16550 __iomem *)0xf40003f8; - - udbg_putc = udbg_maple_real_putc; - udbg_flush = udbg_maple_real_flush; - udbg_getc = NULL; - udbg_getc_poll = NULL; -} -#endif /* CONFIG_PPC_MAPLE */ - -#ifdef CONFIG_PPC_PASEMI -void udbg_pas_real_flush(void) -{ - if (udbg_comport) { - while ((real_205_readb(&udbg_comport->lsr) & LSR_THRE) == 0) - /* wait for idle */; - } -} - -void udbg_pas_real_putc(char c) -{ - if (udbg_comport) { - if (c == '\n') - udbg_pas_real_putc('\r'); - udbg_pas_real_flush(); - real_205_writeb(c, &udbg_comport->thr); eieio(); - } -} - -void udbg_init_pas_realmode(void) -{ - udbg_comport = (struct NS16550 __iomem *)0xfcff03f8UL; - - udbg_putc = udbg_pas_real_putc; - udbg_flush = udbg_pas_real_flush; - udbg_getc = NULL; - udbg_getc_poll = NULL; -} -#endif /* CONFIG_PPC_MAPLE */ - -#ifdef CONFIG_PPC_EARLY_DEBUG_44x -#include <platforms/44x/44x.h> - -static void udbg_44x_as1_flush(void) -{ - if (udbg_comport) { - while ((as1_readb(&udbg_comport->lsr) & LSR_THRE) == 0) - /* wait for idle */; - } -} - -static void udbg_44x_as1_putc(char c) -{ - if (udbg_comport) { - if (c == '\n') - udbg_44x_as1_putc('\r'); - udbg_44x_as1_flush(); - as1_writeb(c, &udbg_comport->thr); eieio(); - } -} - -static int udbg_44x_as1_getc(void) -{ - if (udbg_comport) { - while ((as1_readb(&udbg_comport->lsr) & LSR_DR) == 0) - ; /* wait for char */ - return as1_readb(&udbg_comport->rbr); - } - return -1; -} - -void __init udbg_init_44x_as1(void) -{ - udbg_comport = - (struct NS16550 __iomem *)PPC44x_EARLY_DEBUG_VIRTADDR; - - udbg_putc = udbg_44x_as1_putc; - udbg_flush = udbg_44x_as1_flush; - udbg_getc = udbg_44x_as1_getc; -} -#endif /* CONFIG_PPC_EARLY_DEBUG_44x */ - -#ifdef CONFIG_PPC_EARLY_DEBUG_40x -static void udbg_40x_real_flush(void) -{ - if (udbg_comport) { - while ((real_readb(&udbg_comport->lsr) & LSR_THRE) == 0) - /* wait for idle */; - } -} - -static void udbg_40x_real_putc(char c) -{ - if (udbg_comport) { - if (c == '\n') - udbg_40x_real_putc('\r'); - udbg_40x_real_flush(); - real_writeb(c, &udbg_comport->thr); eieio(); - } -} - -static int udbg_40x_real_getc(void) -{ - if (udbg_comport) { - while ((real_readb(&udbg_comport->lsr) & LSR_DR) == 0) - ; /* wait for char */ - return real_readb(&udbg_comport->rbr); - } - return -1; -} - -void __init udbg_init_40x_realmode(void) -{ - udbg_comport = (struct NS16550 __iomem *) - CONFIG_PPC_EARLY_DEBUG_40x_PHYSADDR; - - udbg_putc = udbg_40x_real_putc; - udbg_flush = udbg_40x_real_flush; - udbg_getc = udbg_40x_real_getc; - udbg_getc_poll = NULL; -} -#endif /* CONFIG_PPC_EARLY_DEBUG_40x */ - -#ifdef CONFIG_PPC_EARLY_DEBUG_WSP -static void udbg_wsp_flush(void) -{ - if (udbg_comport) { - while ((readb(&udbg_comport->lsr) & LSR_THRE) == 0) - /* wait for idle */; - } -} - -static void udbg_wsp_putc(char c) -{ - if (udbg_comport) { - if (c == '\n') - udbg_wsp_putc('\r'); - udbg_wsp_flush(); - writeb(c, &udbg_comport->thr); eieio(); - } -} - -static int udbg_wsp_getc(void) -{ - if (udbg_comport) { - while ((readb(&udbg_comport->lsr) & LSR_DR) == 0) - ; /* wait for char */ - return readb(&udbg_comport->rbr); - } - return -1; -} - -static int udbg_wsp_getc_poll(void) -{ - if (udbg_comport) - if (readb(&udbg_comport->lsr) & LSR_DR) - return readb(&udbg_comport->rbr); - return -1; -} - -void __init udbg_init_wsp(void) -{ - udbg_comport = (struct NS16550 __iomem *)WSP_UART_VIRT; - - udbg_init_uart(udbg_comport, 57600, 50000000); - - udbg_putc = udbg_wsp_putc; - udbg_flush = udbg_wsp_flush; - udbg_getc = udbg_wsp_getc; - udbg_getc_poll = udbg_wsp_getc_poll; -} -#endif /* CONFIG_PPC_EARLY_DEBUG_WSP */ |