serial: Drop the s3c24x0 serial driver

This is not used by any boards. Drop it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: David Müller <d.mueller@elsoft.ch>
Reviewed-by: Jagan Teki <jagan@openedev.com>

doc/driver-model/serial-howto.txt

@@ -6,7 +6,6 @@ ones remain:
 
    serial_bfin.c
    serial_pxa.c
-   serial_s3c24x0.c
 
 The deadline for this work was the end of January 2016. If no one steps
 forward to convert these, at some point there may come a patch to remove them!

drivers/serial/Makefile

@@ -31,7 +31,6 @@ obj-$(CONFIG_MESON_SERIAL) += serial_meson.o
 ifdef CONFIG_SPL_BUILD
 obj-$(CONFIG_ROCKCHIP_SERIAL) += serial_rockchip.o
 endif
-obj-$(CONFIG_S3C24X0_SERIAL) += serial_s3c24x0.o
 obj-$(CONFIG_XILINX_UARTLITE) += serial_xuartlite.o
 obj-$(CONFIG_SANDBOX_SERIAL) += sandbox.o
 obj-$(CONFIG_SCIF_CONSOLE) += serial_sh.o

drivers/serial/serial_s3c24x0.c

-/*
- * (C) Copyright 2002
- * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <common.h>
-#include <linux/compiler.h>
-#include <asm/arch/s3c24x0_cpu.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-#ifdef CONFIG_SERIAL1
-#define UART_NR	S3C24X0_UART0
-
-#elif defined(CONFIG_SERIAL2)
-#define UART_NR	S3C24X0_UART1
-
-#elif defined(CONFIG_SERIAL3)
-#define UART_NR	S3C24X0_UART2
-
-#else
-#error "Bad: you didn't configure serial ..."
-#endif
-
-#include <asm/io.h>
-#include <serial.h>
-
-/* Multi serial device functions */
-#define DECLARE_S3C_SERIAL_FUNCTIONS(port) \
-	int s3serial##port##_init(void) \
-	{ \
-		return serial_init_dev(port); \
-	} \
-	void s3serial##port##_setbrg(void) \
-	{ \
-		serial_setbrg_dev(port); \
-	} \
-	int s3serial##port##_getc(void) \
-	{ \
-		return serial_getc_dev(port); \
-	} \
-	int s3serial##port##_tstc(void) \
-	{ \
-		return serial_tstc_dev(port); \
-	} \
-	void s3serial##port##_putc(const char c) \
-	{ \
-		serial_putc_dev(port, c); \
-	} \
-	void s3serial##port##_puts(const char *s) \
-	{ \
-		serial_puts_dev(port, s); \
-	}
-
-#define INIT_S3C_SERIAL_STRUCTURE(port, __name) {	\
-	.name	= __name,				\
-	.start	= s3serial##port##_init,		\
-	.stop	= NULL,					\
-	.setbrg	= s3serial##port##_setbrg,		\
-	.getc	= s3serial##port##_getc,		\
-	.tstc	= s3serial##port##_tstc,		\
-	.putc	= s3serial##port##_putc,		\
-	.puts	= s3serial##port##_puts,		\
-}
-
-static void _serial_setbrg(const int dev_index)
-{
-	struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index);
-	unsigned int reg = 0;
-	int i;
-
-	/* value is calculated so : (int)(PCLK/16./baudrate) -1 */
-	reg = get_PCLK() / (16 * gd->baudrate) - 1;
-
-	writel(reg, &uart->ubrdiv);
-	for (i = 0; i < 100; i++)
-		/* Delay */ ;
-}
-
-static inline void serial_setbrg_dev(unsigned int dev_index)
-{
-	_serial_setbrg(dev_index);
-}
-
-/* Initialise the serial port. The settings are always 8 data bits, no parity,
- * 1 stop bit, no start bits.
- */
-static int serial_init_dev(const int dev_index)
-{
-	struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index);
-
-	/* FIFO enable, Tx/Rx FIFO clear */
-	writel(0x07, &uart->ufcon);
-	writel(0x0, &uart->umcon);
-
-	/* Normal,No parity,1 stop,8 bit */
-	writel(0x3, &uart->ulcon);
-	/*
-	 * tx=level,rx=edge,disable timeout int.,enable rx error int.,
-	 * normal,interrupt or polling
-	 */
-	writel(0x245, &uart->ucon);
-
-	_serial_setbrg(dev_index);
-
-	return (0);
-}
-
-/*
- * 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 _serial_getc(const int dev_index)
-{
-	struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index);
-
-	while (!(readl(&uart->utrstat) & 0x1))
-		/* wait for character to arrive */ ;
-
-	return readb(&uart->urxh) & 0xff;
-}
-
-static inline int serial_getc_dev(unsigned int dev_index)
-{
-	return _serial_getc(dev_index);
-}
-
-/*
- * Output a single byte to the serial port.
- */
-static void _serial_putc(const char c, const int dev_index)
-{
-	struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index);
-
-	/* If \n, also do \r */
-	if (c == '\n')
-		serial_putc('\r');
-
-	while (!(readl(&uart->utrstat) & 0x2))
-		/* wait for room in the tx FIFO */ ;
-
-	writeb(c, &uart->utxh);
-}
-
-static inline void serial_putc_dev(unsigned int dev_index, const char c)
-{
-	_serial_putc(c, dev_index);
-}
-
-/*
- * Test whether a character is in the RX buffer
- */
-static int _serial_tstc(const int dev_index)
-{
-	struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index);
-
-	return readl(&uart->utrstat) & 0x1;
-}
-
-static inline int serial_tstc_dev(unsigned int dev_index)
-{
-	return _serial_tstc(dev_index);
-}
-
-static void _serial_puts(const char *s, const int dev_index)
-{
-	while (*s) {
-		_serial_putc(*s++, dev_index);
-	}
-}
-
-static inline void serial_puts_dev(int dev_index, const char *s)
-{
-	_serial_puts(s, dev_index);
-}
-
-DECLARE_S3C_SERIAL_FUNCTIONS(0);
-struct serial_device s3c24xx_serial0_device =
-INIT_S3C_SERIAL_STRUCTURE(0, "s3ser0");
-DECLARE_S3C_SERIAL_FUNCTIONS(1);
-struct serial_device s3c24xx_serial1_device =
-INIT_S3C_SERIAL_STRUCTURE(1, "s3ser1");
-DECLARE_S3C_SERIAL_FUNCTIONS(2);
-struct serial_device s3c24xx_serial2_device =
-INIT_S3C_SERIAL_STRUCTURE(2, "s3ser2");
-
-__weak struct serial_device *default_serial_console(void)
-{
-#if defined(CONFIG_SERIAL1)
-	return &s3c24xx_serial0_device;
-#elif defined(CONFIG_SERIAL2)
-	return &s3c24xx_serial1_device;
-#elif defined(CONFIG_SERIAL3)
-	return &s3c24xx_serial2_device;
-#else
-#error "CONFIG_SERIAL? missing."
-#endif
-}
-
-void s3c24xx_serial_initialize(void)
-{
-	serial_register(&s3c24xx_serial0_device);
-	serial_register(&s3c24xx_serial1_device);
-	serial_register(&s3c24xx_serial2_device);
-}

scripts/config_whitelist.txt

@@ -3805,7 +3805,6 @@ CONFIG_S3C2410_NAND_BBT
 CONFIG_S3C2410_NAND_HWECC
 CONFIG_S3C2440
 CONFIG_S3C24X0
-CONFIG_S3C24X0_SERIAL
 CONFIG_S3C24XX_CUSTOM_NAND_TIMING
 CONFIG_S3C24XX_TACLS
 CONFIG_S3C24XX_TWRPH0