Difuse/u-boot
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

drivers: serial_s3c44b0: delete an unused driver

Browse source 
Since commit 5dc5f36 removed B2 board support,
there are no boards enabling serial_s3c44b0.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Andrea Scian <andrea.scian@dave-tech.it>
This commit is contained in:
Masahiro Yamada 2013-08-19 15:01:24 +09:00 committed by Albert ARIBAUD
parent a341f649d7
commit d964df322f
4 changed files with 6 additions and 229 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
doc/driver-model/UDM-serial.txt
View file

@ -148,32 +148,28 @@ III) Analysis of in-tree drivers
--------------------
This driver, being quite ad-hoc might need some work to bring back to shape.
22) serial_s3c44b0.c
--------------------
No support for CONFIG_SERIAL_MULTI. Simple conversion possible.
23) serial_s5p.c
22) serial_s5p.c
----------------
No support for CONFIG_SERIAL_MULTI. Simple conversion possible.
24) serial_sa1100.c
23) serial_sa1100.c
-------------------
No support for CONFIG_SERIAL_MULTI. Simple conversion possible.
25) serial_sh.c
24) serial_sh.c
---------------
No support for CONFIG_SERIAL_MULTI. Simple conversion possible.
26) serial_xuartlite.c
25) serial_xuartlite.c
----------------------
No support for CONFIG_SERIAL_MULTI. Simple conversion possible.
27) usbtty.c
26) usbtty.c
------------
This driver seems very complicated and entangled with USB framework. The
conversion might be complicated here.
28) arch/powerpc/cpu/mpc512x/serial.c
27) arch/powerpc/cpu/mpc512x/serial.c
-------------------------------------
This driver supports CONFIG_SERIAL_MULTI. This driver will need to be moved to
proper place.

1
drivers/serial/Makefile
View file

@ -31,7 +31,6 @@ COBJS-$(CONFIG_PL011_SERIAL) += serial_pl01x.o
COBJS-$(CONFIG_PXA_SERIAL) += serial_pxa.o
COBJS-$(CONFIG_SA1100_SERIAL) += serial_sa1100.o
COBJS-$(CONFIG_S3C24X0_SERIAL) += serial_s3c24x0.o
COBJS-$(CONFIG_S3C44B0_SERIAL) += serial_s3c44b0.o
COBJS-$(CONFIG_XILINX_UARTLITE) += serial_xuartlite.o
COBJS-$(CONFIG_SANDBOX_SERIAL) += sandbox.o
COBJS-$(CONFIG_SCIF_CONSOLE) += serial_sh.o

2
drivers/serial/serial.c
View file

@ -156,7 +156,6 @@ serial_initfunc(lh7a40x_serial_initialize);
serial_initfunc(max3100_serial_initialize);
serial_initfunc(mxc_serial_initialize);
serial_initfunc(pl01x_serial_initialize);
serial_initfunc(s3c44b0_serial_initialize);
serial_initfunc(sa1100_serial_initialize);
serial_initfunc(sh_serial_initialize);
serial_initfunc(arm_dcc_initialize);
@ -250,7 +249,6 @@ void serial_initialize(void)
max3100_serial_initialize();
mxc_serial_initialize();
pl01x_serial_initialize();
s3c44b0_serial_initialize();
sa1100_serial_initialize();
sh_serial_initialize();
arm_dcc_initialize();

216
drivers/serial/serial_s3c44b0.c
View file

@ -1,216 +0,0 @@
pyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
*
* (C) Copyright 2002
* ght 2002-2004
* Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Alex Zuepke <azu@sysgo.de>
*
* Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/hardware.h>
DECLARE_GLOBAL_DATA_PTR;
/* flush serial input queue. returns 0 on success or negative error
* number otherwise
*/
static int serial_flush_input(void)
{
volatile u32 tmp;
/* keep on reading as long as the receiver is not empty */
while(UTRSTAT0&0x01) {
tmp = REGB(URXH0);
}
return 0;
}
/* flush output queue. returns 0 on success or negative error number
* otherwise
*/
static int serial_flush_output(void)
{
/* wait until the transmitter is no longer busy */
while(!(UTRSTAT0 & 0x02)) {
}
return 0;
}
static void s3c44b0_serial_setbrg(void)
{
u32 divisor = 0;
/* get correct divisor */
switch(gd->baudrate) {
case 1200:
#if CONFIG_S3C44B0_CLOCK_SPEED==66
divisor = 3124;
#elif CONFIG_S3C44B0_CLOCK_SPEED==75
divisor = 3905;
#else
# error CONFIG_S3C44B0_CLOCK_SPEED undefined
#endif
break;
case 9600:
#if CONFIG_S3C44B0_CLOCK_SPEED==66
divisor = 390;
#elif CONFIG_S3C44B0_CLOCK_SPEED==75
divisor = 487;
#else
# error CONFIG_S3C44B0_CLOCK_SPEED undefined
#endif
break;
case 19200:
#if CONFIG_S3C44B0_CLOCK_SPEED==66
divisor = 194;
#elif CONFIG_S3C44B0_CLOCK_SPEED==75
divisor = 243;
#else
# error CONFIG_S3C44B0_CLOCK_SPEED undefined
#endif
break;
case 38400:
#if CONFIG_S3C44B0_CLOCK_SPEED==66
divisor = 97;
#elif CONFIG_S3C44B0_CLOCK_SPEED==75
divisor = 121;
#else
# error CONFIG_S3C44B0_CLOCK_SPEED undefined
#endif /* break; */
case 57600:
#if CONFIG_S3C44B0_CLOCK_SPEED==66
divisor = 64;
#elif CONFIG_S3C44B0_CLOCK_SPEED==75
divisor = 80;
#else
# error CONFIG_S3C44B0_CLOCK_SPEED undefined
#endif /* break; */
case 115200:
#if CONFIG_S3C44B0_CLOCK_SPEED==66
divisor = 32;
#elif CONFIG_S3C44B0_CLOCK_SPEED==75
divisor = 40;
#else
# error CONFIG_S3C44B0_CLOCK_SPEED undefined
#endif /* break; */
}
serial_flush_output();
serial_flush_input();
UFCON0 = 0x0;
ULCON0 = 0x03;
UCON0 = 0x05;
UBRDIV0 = divisor;
UFCON1 = 0x0;
ULCON1 = 0x03;
UCON1 = 0x05;
UBRDIV1 = divisor;
for(divisor=0; divisor<100; divisor++) {
/* NOP */
}
}
/*
* Initialise the serial port with the given baudrate. The settings
* are always 8 data bits, no parity, 1 stop bit, no start bits.
*
*/
static int s3c44b0_serial_init(void)
{
serial_setbrg ();
return (0);
}
/*
* Output a single byte to the serial port.
*/
static void s3c44b0_serial_putc(const char c)
{
/* wait for room in the transmit FIFO */
while(!(UTRSTAT0 & 0x02));
UTXH0 = (unsigned char)c;
/*
to be polite with serial console add a line feed
to the carriage return character
*/
if (c=='\n')
serial_putc('\r');
}
/*
* Read a single byte from the serial port. Returns 1 on success, 0
* otherwise. When the function is succesfull, the character read is
* written into its argument c.
*/
static int s3c44b0_serial_tstc(void)
{
return (UTRSTAT0 & 0x01);
}
/*
* Read a single byte from the serial port. Returns 1 on success, 0
* otherwise. When the function is succesfull, the character read is
* written into its argument c.
*/
static int s3c44b0_serial_getc(void)
{
int rv;
for(;;) {
rv = s3c44b0_serial_tstc();
if(rv > 0)
return URXH0;
}
}
static struct serial_device s3c44b0_serial_drv = {
.name = "s3c44b0_serial",
.start = s3c44b0_serial_init,
.stop = NULL,
.setbrg = s3c44b0_serial_setbrg,
.putc = s3c44b0_serial_putc,
.puts = default_serial_puts,
.getc = s3c44b0_serial_getc,
.tstc = s3c44b0_serial_tstc,
};
void s3c44b0_serial_initialize(void)
{
serial_register(&s3c44b0_serial_drv);
}
__weak struct serial_device *default_serial_console(void)
{
return &s3c44b0_serial_drv;
}