drivers: serial_s3c44b0: delete an unused driver

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>

doc/driver-model/UDM-serial.txt

@@ -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
+  22) serial_s5p.c
-  --------------------
-  No support for CONFIG_SERIAL_MULTI. Simple conversion possible.
-
-  23) 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.

drivers/serial/Makefile

@@ -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

drivers/serial/serial.c

@@ -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();

drivers/serial/serial_s3c44b0.c

@@ -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;
-}