ARM: mach-s3c2400: delete

On Tue, 28 Jun 2011, Ben Dooks wrote:

> On Tue, Jun 28, 2011 at 11:22:57PM +0200, Arnd Bergmann wrote:
>
> > On a related note, what about mach-s3c2400? It seems to be even more
> > incomplete.
>
> Probably the same fate awaits that. It is so old that there's little
> incentive to do anything with it.

So out it goes as well.

The PORT_S3C2400 definition in include/linux/serial_core.h is left there
to prevent a reuse of the same number for another port type.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>

Documentation/arm/Samsung-S3C24XX/Overview.txt

@@ -8,10 +8,13 @@ Introduction
 
   The Samsung S3C24XX range of ARM9 System-on-Chip CPUs are supported
   by the 's3c2410' architecture of ARM Linux. Currently the S3C2410,
-  S3C2412, S3C2413, S3C2416 S3C2440, S3C2442, S3C2443 and S3C2450 devices
+  S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443 and S3C2450 devices
   are supported.
 
-  Support for the S3C2400 and S3C24A0 series are in progress.
+  Support for the S3C2400 and S3C24A0 series was never completed and the
+  corresponding code has been removed after a while.  If someone wishes to
+  revive this effort, partial support can be retrieved from earlier Linux
+  versions.
 
   The S3C2416 and S3C2450 devices are very similar and S3C2450 support is
   included under the arch/arm/mach-s3c2416 directory. Note, whilst core

arch/arm/Kconfig

@@ -969,7 +969,6 @@ source "arch/arm/plat-spear/Kconfig"
 source "arch/arm/plat-tcc/Kconfig"
 
 if ARCH_S3C2410
-source "arch/arm/mach-s3c2400/Kconfig"
 source "arch/arm/mach-s3c2410/Kconfig"
 source "arch/arm/mach-s3c2412/Kconfig"
 source "arch/arm/mach-s3c2416/Kconfig"

arch/arm/Makefile

@@ -172,7 +172,7 @@ machine-$(CONFIG_ARCH_PNX4008)		:= pnx4008
 machine-$(CONFIG_ARCH_PXA)		:= pxa
 machine-$(CONFIG_ARCH_REALVIEW)		:= realview
 machine-$(CONFIG_ARCH_RPC)		:= rpc
-machine-$(CONFIG_ARCH_S3C2410)		:= s3c2410 s3c2400 s3c2412 s3c2416 s3c2440 s3c2443
+machine-$(CONFIG_ARCH_S3C2410)		:= s3c2410 s3c2412 s3c2416 s3c2440 s3c2443
 machine-$(CONFIG_ARCH_S3C64XX)		:= s3c64xx
 machine-$(CONFIG_ARCH_S5P64X0)		:= s5p64x0
 machine-$(CONFIG_ARCH_S5PC100)		:= s5pc100

arch/arm/mach-s3c2400/Kconfig

-# Copyright 2007 Simtec Electronics
-#
-# Licensed under GPLv2
-
-menu "S3C2400 Machines"
-
-endmenu

arch/arm/mach-s3c2400/Makefile

-# arch/arm/mach-s3c2400/Makefile
-#
-# Copyright 2007 Simtec Electronics
-#
-# Licensed under GPLv2
-
-obj-y				:=
-obj-m				:=
-obj-n				:=
-obj-				:=
-
-obj-$(CONFIG_CPU_S3C2400)	+= gpio.o
-
-# Machine support
-

arch/arm/mach-s3c2400/gpio.c

-/* linux/arch/arm/mach-s3c2400/gpio.c
- *
- * Copyright (c) 2006 Lucas Correia Villa Real <lucasvr@gobolinux.org>
- *
- * S3C2400 GPIO support
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-*/
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/io.h>
-
-#include <mach/hardware.h>
-#include <asm/irq.h>
-
-#include <mach/regs-gpio.h>
-
-int s3c2400_gpio_getirq(unsigned int pin)
-{
-	if (pin < S3C2410_GPE(0) || pin > S3C2400_GPE(7))
-		return -EINVAL;  /* not valid interrupts */
-
-	return (pin - S3C2410_GPE(0)) + IRQ_EINT0;
-}
-
-EXPORT_SYMBOL(s3c2400_gpio_getirq);

arch/arm/mach-s3c2400/include/mach/map.h

-/* arch/arm/mach-s3c2400/include/mach/map.h
- *
- * Copyright 2003-2007 Simtec Electronics
- *	http://armlinux.simtec.co.uk/
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * Copyright 2003, Lucas Correia Villa Real
- *
- * S3C2400 - Memory map definitions
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-#define S3C2400_PA_MEMCTRL	(0x14000000)
-#define S3C2400_PA_USBHOST	(0x14200000)
-#define S3C2400_PA_IRQ		(0x14400000)
-#define S3C2400_PA_DMA		(0x14600000)
-#define S3C2400_PA_CLKPWR	(0x14800000)
-#define S3C2400_PA_LCD		(0x14A00000)
-#define S3C2400_PA_UART		(0x15000000)
-#define S3C2400_PA_TIMER	(0x15100000)
-#define S3C2400_PA_USBDEV	(0x15200140)
-#define S3C2400_PA_WATCHDOG	(0x15300000)
-#define S3C2400_PA_IIC		(0x15400000)
-#define S3C2400_PA_IIS		(0x15508000)
-#define S3C2400_PA_GPIO		(0x15600000)
-#define S3C2400_PA_RTC		(0x15700040)
-#define S3C2400_PA_ADC		(0x15800000)
-#define S3C2400_PA_SPI		(0x15900000)
-
-#define S3C2400_PA_MMC		(0x15A00000)
-#define S3C2400_SZ_MMC		SZ_1M
-
-/* physical addresses of all the chip-select areas */
-
-#define S3C2400_CS0	(0x00000000)
-#define S3C2400_CS1	(0x02000000)
-#define S3C2400_CS2	(0x04000000)
-#define S3C2400_CS3	(0x06000000)
-#define S3C2400_CS4	(0x08000000)
-#define S3C2400_CS5	(0x0A000000)
-#define S3C2400_CS6	(0x0C000000)
-#define S3C2400_CS7	(0x0E000000)
-
-#define S3C2400_SDRAM_PA    (S3C2400_CS6)
-
-/* Use a single interface for common resources between S3C24XX cpus */
-
-#define S3C24XX_PA_IRQ		S3C2400_PA_IRQ
-#define S3C24XX_PA_MEMCTRL	S3C2400_PA_MEMCTRL
-#define S3C24XX_PA_USBHOST	S3C2400_PA_USBHOST
-#define S3C24XX_PA_DMA		S3C2400_PA_DMA
-#define S3C24XX_PA_CLKPWR	S3C2400_PA_CLKPWR
-#define S3C24XX_PA_LCD		S3C2400_PA_LCD
-#define S3C24XX_PA_UART		S3C2400_PA_UART
-#define S3C24XX_PA_TIMER	S3C2400_PA_TIMER
-#define S3C24XX_PA_USBDEV	S3C2400_PA_USBDEV
-#define S3C24XX_PA_WATCHDOG	S3C2400_PA_WATCHDOG
-#define S3C24XX_PA_IIC		S3C2400_PA_IIC
-#define S3C24XX_PA_IIS		S3C2400_PA_IIS
-#define S3C24XX_PA_GPIO		S3C2400_PA_GPIO
-#define S3C24XX_PA_RTC		S3C2400_PA_RTC
-#define S3C24XX_PA_ADC		S3C2400_PA_ADC
-#define S3C24XX_PA_SPI		S3C2400_PA_SPI

arch/arm/mach-s3c2410/include/mach/gpio-fns.h

@@ -52,12 +52,6 @@ extern unsigned int s3c2410_gpio_getcfg(unsigned int pin);
 
 extern int s3c2410_gpio_getirq(unsigned int pin);
 
-#ifdef CONFIG_CPU_S3C2400
-
-extern int s3c2400_gpio_getirq(unsigned int pin);
-
-#endif /* CONFIG_CPU_S3C2400 */
-
 /* s3c2410_gpio_irqfilter
  *
  * set the irq filtering on the given pin

arch/arm/mach-s3c2410/include/mach/regs-mem.h

@@ -145,29 +145,8 @@
 #define S3C2410_BANKCON_Tacs_SHIFT	(13)
 
 #define S3C2410_BANKCON_SRAM		(0x0 << 15)
-#define S3C2400_BANKCON_EDODRAM		(0x2 << 15)
 #define S3C2410_BANKCON_SDRAM		(0x3 << 15)
 
-/* next bits only for EDO DRAM in 6,7 */
-#define S3C2400_BANKCON_EDO_Trcd1      (0x00 << 4)
-#define S3C2400_BANKCON_EDO_Trcd2      (0x01 << 4)
-#define S3C2400_BANKCON_EDO_Trcd3      (0x02 << 4)
-#define S3C2400_BANKCON_EDO_Trcd4      (0x03 << 4)
-
-/* CAS pulse width */
-#define S3C2400_BANKCON_EDO_PULSE1     (0x00 << 3)
-#define S3C2400_BANKCON_EDO_PULSE2     (0x01 << 3)
-
-/* CAS pre-charge */
-#define S3C2400_BANKCON_EDO_TCP1       (0x00 << 2)
-#define S3C2400_BANKCON_EDO_TCP2       (0x01 << 2)
-
-/* control column address select */
-#define S3C2400_BANKCON_EDO_SCANb8     (0x00 << 0)
-#define S3C2400_BANKCON_EDO_SCANb9     (0x01 << 0)
-#define S3C2400_BANKCON_EDO_SCANb10    (0x02 << 0)
-#define S3C2400_BANKCON_EDO_SCANb11    (0x03 << 0)
-
 /* next bits only for SDRAM in 6,7 */
 #define S3C2410_BANKCON_Trcd2		(0x00 << 2)
 #define S3C2410_BANKCON_Trcd3		(0x01 << 2)
@@ -194,12 +173,6 @@
 #define S3C2410_REFRESH_TRP_3clk	(1<<20)
 #define S3C2410_REFRESH_TRP_4clk	(2<<20)
 
-#define S3C2400_REFRESH_DRAM_TRP_MASK   (3<<20)
-#define S3C2400_REFRESH_DRAM_TRP_1_5clk (0<<20)
-#define S3C2400_REFRESH_DRAM_TRP_2_5clk (1<<20)
-#define S3C2400_REFRESH_DRAM_TRP_3_5clk (2<<20)
-#define S3C2400_REFRESH_DRAM_TRP_4_5clk (3<<20)
-
 #define S3C2410_REFRESH_TSRC_MASK	(3<<18)
 #define S3C2410_REFRESH_TSRC_4clk	(0<<18)
 #define S3C2410_REFRESH_TSRC_5clk	(1<<18)
@@ -222,7 +195,6 @@
 #define S3C2410_BANKSIZE_4M		(0x5 << 0)
 #define S3C2410_BANKSIZE_2M		(0x4 << 0)
 #define S3C2410_BANKSIZE_MASK		(0x7 << 0)
-#define S3C2400_BANKSIZE_MASK           (0x4 << 0)
 #define S3C2410_BANKSIZE_SCLK_EN	(1<<4)
 #define S3C2410_BANKSIZE_SCKE_EN	(1<<5)
 #define S3C2410_BANKSIZE_BURST		(1<<7)

arch/arm/mach-s3c2412/Kconfig

@@ -15,7 +15,7 @@ config CPU_S3C2412
 
 config CPU_S3C2412_ONLY
 	bool
-	depends on ARCH_S3C2410 && !CPU_S3C2400 && !CPU_S3C2410 && \
+	depends on ARCH_S3C2410 && !CPU_S3C2410 && \
 		   !CPU_S3C2416 && !CPU_S3C2440 && !CPU_S3C2442 && \
 		   !CPU_S3C2443 && CPU_S3C2412
 	default y if CPU_S3C2412

arch/arm/plat-s3c24xx/cpu.c

@@ -46,7 +46,6 @@
 #include <plat/cpu.h>
 #include <plat/devs.h>
 #include <plat/clock.h>
-#include <plat/s3c2400.h>
 #include <plat/s3c2410.h>
 #include <plat/s3c2412.h>
 #include <plat/s3c2416.h>
@@ -55,7 +54,6 @@
 
 /* table of supported CPUs */
 
-static const char name_s3c2400[]  = "S3C2400";
 static const char name_s3c2410[]  = "S3C2410";
 static const char name_s3c2412[]  = "S3C2412";
 static const char name_s3c2416[]  = "S3C2416/S3C2450";
@@ -157,15 +155,6 @@ static struct cpu_table cpu_ids[] __initdata = {
 		.init		= s3c2443_init,
 		.name		= name_s3c2443,
 	},
-	{
-		.idcode		= 0x0,   /* S3C2400 doesn't have an idcode */
-		.idmask		= 0xffffffff,
-		.map_io		= s3c2400_map_io,
-		.init_clocks	= s3c2400_init_clocks,
-		.init_uarts	= s3c2400_init_uarts,
-		.init		= s3c2400_init,
-		.name		= name_s3c2400
-	},
 };
 
 /* minimal IO mapping */
@@ -200,11 +189,7 @@ static unsigned long s3c24xx_read_idcode_v5(void)
 
 static unsigned long s3c24xx_read_idcode_v4(void)
 {
-#ifndef CONFIG_CPU_S3C2400
 	return __raw_readl(S3C2410_GSTATUS1);
-#else
-	return 0UL;
-#endif
 }
 
 /* Hook for arm_pm_restart to ensure we execute the reset code

arch/arm/plat-s3c24xx/include/plat/regs-iis.h

@@ -64,14 +64,5 @@
 #define S3C2410_IISFCON_RXMASK	  (0x3f)
 #define S3C2410_IISFCON_RXSHIFT	  (0)
 
-#define S3C2400_IISFCON_TXDMA     (1<<11)
-#define S3C2400_IISFCON_RXDMA     (1<<10)
-#define S3C2400_IISFCON_TXENABLE  (1<<9)
-#define S3C2400_IISFCON_RXENABLE  (1<<8)
-#define S3C2400_IISFCON_TXMASK	  (0x07 << 4)
-#define S3C2400_IISFCON_TXSHIFT	  (4)
-#define S3C2400_IISFCON_RXMASK	  (0x07)
-#define S3C2400_IISFCON_RXSHIFT	  (0)
-
 #define S3C2410_IISFIFO  (0x10)
 #endif /* __ASM_ARCH_REGS_IIS_H */

arch/arm/plat-s3c24xx/include/plat/regs-spi.h

@@ -67,7 +67,6 @@
 
 #define S3C2410_SPPIN_ENMUL	  (1<<2)	/* Multi Master Error detect */
 #define S3C2410_SPPIN_RESERVED	  (1<<1)
-#define S3C2400_SPPIN_nCS     	  (1<<1)	/* SPI Card Select */
 #define S3C2410_SPPIN_KEEP	  (1<<0)	/* Master Out keep */
 
 #define S3C2410_SPPRE	 (0x0C)

arch/arm/plat-s3c24xx/include/plat/s3c2400.h

-/* linux/include/asm-arm/plat-s3c24xx/s3c2400.h
- *
- * Copyright (c) 2004 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * Header file for S3C2400 cpu support
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Modifications:
- *     09-Fev-2006 LCVR  First version, based on s3c2410.h
-*/
-
-#ifdef CONFIG_CPU_S3C2400
-
-extern  int s3c2400_init(void);
-
-extern void s3c2400_map_io(void);
-
-extern void s3c2400_init_uarts(struct s3c2410_uartcfg *cfg, int no);
-
-extern void s3c2400_init_clocks(int xtal);
-
-#else
-#define s3c2400_init_clocks NULL
-#define s3c2400_init_uarts NULL
-#define s3c2400_map_io NULL
-#define s3c2400_init NULL
-#endif

drivers/tty/serial/Kconfig

@@ -457,7 +457,6 @@ config SERIAL_SAMSUNG_UARTS_4
 config SERIAL_SAMSUNG_UARTS
 	int
 	depends on ARM && PLAT_SAMSUNG
-	default 2 if ARCH_S3C2400
 	default 6 if ARCH_S5P6450
 	default 4 if SERIAL_SAMSUNG_UARTS_4
 	default 3
@@ -489,13 +488,6 @@ config SERIAL_SAMSUNG_CONSOLE
 	  your boot loader about how to pass options to the kernel at
 	  boot time.)
 
-config SERIAL_S3C2400
-	tristate "Samsung S3C2410 Serial port support"
-	depends on ARM && SERIAL_SAMSUNG && CPU_S3C2400
-	default y if CPU_S3C2400
-	help
-	  Serial port support for the Samsung S3C2400 SoC
-
 config SERIAL_S3C2410
 	tristate "Samsung S3C2410 Serial port support"
 	depends on SERIAL_SAMSUNG && CPU_S3C2410

drivers/tty/serial/Makefile

@@ -38,7 +38,6 @@ obj-$(CONFIG_SERIAL_BCM63XX) += bcm63xx_uart.o
 obj-$(CONFIG_SERIAL_BFIN) += bfin_5xx.o
 obj-$(CONFIG_SERIAL_BFIN_SPORT) += bfin_sport_uart.o
 obj-$(CONFIG_SERIAL_SAMSUNG) += samsung.o
-obj-$(CONFIG_SERIAL_S3C2400) += s3c2400.o
 obj-$(CONFIG_SERIAL_S3C2410) += s3c2410.o
 obj-$(CONFIG_SERIAL_S3C2412) += s3c2412.o
 obj-$(CONFIG_SERIAL_S3C2440) += s3c2440.o

drivers/tty/serial/s3c2400.c

-/*
- * Driver for Samsung SoC onboard UARTs.
- *
- * Ben Dooks, Copyright (c) 2003-2005 Simtec Electronics
- *	http://armlinux.simtec.co.uk/
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-#include <linux/module.h>
-#include <linux/ioport.h>
-#include <linux/io.h>
-#include <linux/platform_device.h>
-
-#include <asm/irq.h>
-
-#include <mach/hardware.h>
-
-#include <plat/regs-serial.h>
-#include <mach/regs-gpio.h>
-
-#include "samsung.h"
-
-static int s3c2400_serial_getsource(struct uart_port *port,
-				    struct s3c24xx_uart_clksrc *clk)
-{
-	clk->divisor = 1;
-	clk->name = "pclk";
-
-	return 0;
-}
-
-static int s3c2400_serial_setsource(struct uart_port *port,
-				    struct s3c24xx_uart_clksrc *clk)
-{
-	return 0;
-}
-
-static int s3c2400_serial_resetport(struct uart_port *port,
-				    struct s3c2410_uartcfg *cfg)
-{
-	dbg("s3c2400_serial_resetport: port=%p (%08lx), cfg=%p\n",
-	    port, port->mapbase, cfg);
-
-	wr_regl(port, S3C2410_UCON,  cfg->ucon);
-	wr_regl(port, S3C2410_ULCON, cfg->ulcon);
-
-	/* reset both fifos */
-
-	wr_regl(port, S3C2410_UFCON, cfg->ufcon | S3C2410_UFCON_RESETBOTH);
-	wr_regl(port, S3C2410_UFCON, cfg->ufcon);
-
-	return 0;
-}
-
-static struct s3c24xx_uart_info s3c2400_uart_inf = {
-	.name		= "Samsung S3C2400 UART",
-	.type		= PORT_S3C2400,
-	.fifosize	= 16,
-	.rx_fifomask	= S3C2410_UFSTAT_RXMASK,
-	.rx_fifoshift	= S3C2410_UFSTAT_RXSHIFT,
-	.rx_fifofull	= S3C2410_UFSTAT_RXFULL,
-	.tx_fifofull	= S3C2410_UFSTAT_TXFULL,
-	.tx_fifomask	= S3C2410_UFSTAT_TXMASK,
-	.tx_fifoshift	= S3C2410_UFSTAT_TXSHIFT,
-	.get_clksrc	= s3c2400_serial_getsource,
-	.set_clksrc	= s3c2400_serial_setsource,
-	.reset_port	= s3c2400_serial_resetport,
-};
-
-static int s3c2400_serial_probe(struct platform_device *dev)
-{
-	return s3c24xx_serial_probe(dev, &s3c2400_uart_inf);
-}
-
-static struct platform_driver s3c2400_serial_driver = {
-	.probe		= s3c2400_serial_probe,
-	.remove		= __devexit_p(s3c24xx_serial_remove),
-	.driver		= {
-		.name	= "s3c2400-uart",
-		.owner	= THIS_MODULE,
-	},
-};
-
-s3c24xx_console_init(&s3c2400_serial_driver, &s3c2400_uart_inf);
-
-static inline int s3c2400_serial_init(void)
-{
-	return s3c24xx_serial_init(&s3c2400_serial_driver, &s3c2400_uart_inf);
-}
-
-static inline void s3c2400_serial_exit(void)
-{
-	platform_driver_unregister(&s3c2400_serial_driver);
-}
-
-module_init(s3c2400_serial_init);
-module_exit(s3c2400_serial_exit);
-
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
-MODULE_DESCRIPTION("Samsung S3C2400 SoC Serial port driver");
-MODULE_ALIAS("platform:s3c2400-uart");