6 files changed, 320 insertions, 24 deletions

diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 579d63a81aa2..e4ae499e587e 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -447,7 +447,7 @@ config SERIAL_CLPS711X_CONSOLE
 
 config SERIAL_SAMSUNG
         tristate "Samsung SoC serial support"
-        depends on ARM && PLAT_S3C24XX
+        depends on ARM && PLAT_S3C
         select SERIAL_CORE
         help
           Support for the on-chip UARTs on the Samsung S3C24XX series CPUs,
@@ -508,7 +508,20 @@ config SERIAL_S3C2440
         help
           Serial port support for the Samsung S3C2440 and S3C2442 SoC
 
+config SERIAL_S3C24A0
+        tristate "Samsung S3C24A0 Serial port support"
+        depends on SERIAL_SAMSUNG && CPU_S3C24A0
+        default y if CPU_S3C24A0
+        help
+          Serial port support for the Samsung S3C24A0 SoC
 
+config SERIAL_S3C6400
+        tristate "Samsung S3C6400/S3C6410 Serial port support"
+        depends on SERIAL_SAMSUNG && (CPU_S3C600 || CPU_S3C6410)
+        default y
+        help
+          Serial port support for the Samsung S3C6400 and S3C6410
+          SoCs
 
 config SERIAL_DZ
         bool "DECstation DZ serial driver"
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index 0c17c8ddb19d..dfe775ac45b2 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -41,6 +41,8 @@ obj-$(CONFIG_SERIAL_S3C2400) += s3c2400.o
 obj-$(CONFIG_SERIAL_S3C2410) += s3c2410.o
 obj-$(CONFIG_SERIAL_S3C2412) += s3c2412.o
 obj-$(CONFIG_SERIAL_S3C2440) += s3c2440.o
+obj-$(CONFIG_SERIAL_S3C24A0) += s3c24a0.o
+obj-$(CONFIG_SERIAL_S3C6400) += s3c6400.o
 obj-$(CONFIG_SERIAL_IP22_ZILOG) += ip22zilog.o
 obj-$(CONFIG_SERIAL_MUX) += mux.o
 obj-$(CONFIG_SERIAL_68328) += 68328serial.o
diff --git a/drivers/serial/s3c24a0.c b/drivers/serial/s3c24a0.c
new file mode 100644
index 000000000000..ebf2fd3c8f7d
--- /dev/null
+++ b/drivers/serial/s3c24a0.c
@@ -0,0 +1,118 @@
+/* linux/drivers/serial/s3c24a0.c
+ *
+ * Driver for Samsung S3C24A0 SoC onboard UARTs.
+ *
+ * Based on drivers/serial/s3c2410.c
+ *
+ * Author: Sandeep Patil <sandeep.patil@azingo.com>
+ *
+ * Ben Dooks, Copyright (c) 2003-2005,2008 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/platform_device.h>
+#include <linux/init.h>
+#include <linux/serial_core.h>
+#include <linux/serial.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+
+#include <mach/hardware.h>
+
+#include <plat/regs-serial.h>
+#include <mach/regs-gpio.h>
+
+#include "samsung.h"
+
+static int s3c24a0_serial_setsource(struct uart_port *port,
+                                    struct s3c24xx_uart_clksrc *clk)
+{
+        unsigned long ucon = rd_regl(port, S3C2410_UCON);
+
+        if (strcmp(clk->name, "uclk") == 0)
+                ucon |= S3C2410_UCON_UCLK;
+        else
+                ucon &= ~S3C2410_UCON_UCLK;
+
+        wr_regl(port, S3C2410_UCON, ucon);
+        return 0;
+}
+
+static int s3c24a0_serial_getsource(struct uart_port *port,
+                                    struct s3c24xx_uart_clksrc *clk)
+{
+        unsigned long ucon = rd_regl(port, S3C2410_UCON);
+
+        clk->divisor = 1;
+        clk->name = (ucon & S3C2410_UCON_UCLK) ? "uclk" : "pclk";
+
+        return 0;
+}
+
+static int s3c24a0_serial_resetport(struct uart_port *port,
+                                    struct s3c2410_uartcfg *cfg)
+{
+        dbg("s3c24a0_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 s3c24a0_uart_inf = {
+        .name           = "Samsung S3C24A0 UART",
+        .type           = PORT_S3C2410,
+        .fifosize       = 16,
+        .rx_fifomask    = S3C24A0_UFSTAT_RXMASK,
+        .rx_fifoshift   = S3C24A0_UFSTAT_RXSHIFT,
+        .rx_fifofull    = S3C24A0_UFSTAT_RXFULL,
+        .tx_fifofull    = S3C24A0_UFSTAT_TXFULL,
+        .tx_fifomask    = S3C24A0_UFSTAT_TXMASK,
+        .tx_fifoshift   = S3C24A0_UFSTAT_TXSHIFT,
+        .get_clksrc     = s3c24a0_serial_getsource,
+        .set_clksrc     = s3c24a0_serial_setsource,
+        .reset_port     = s3c24a0_serial_resetport,
+};
+
+static int s3c24a0_serial_probe(struct platform_device *dev)
+{
+        return s3c24xx_serial_probe(dev, &s3c24a0_uart_inf);
+}
+
+static struct platform_driver s3c24a0_serial_drv = {
+        .probe          = s3c24a0_serial_probe,
+        .remove         = s3c24xx_serial_remove,
+        .driver         = {
+                .name   = "s3c24a0-uart",
+                .owner  = THIS_MODULE,
+        },
+};
+
+s3c24xx_console_init(&s3c24a0_serial_drv, &s3c24a0_uart_inf);
+
+static int __init s3c24a0_serial_init(void)
+{
+        return s3c24xx_serial_init(&s3c24a0_serial_drv, &s3c24a0_uart_inf);
+}
+
+static void __exit s3c24a0_serial_exit(void)
+{
+        platform_driver_unregister(&s3c24a0_serial_drv);
+}
+
+module_init(s3c24a0_serial_init);
+module_exit(s3c24a0_serial_exit);
+
diff --git a/drivers/serial/s3c6400.c b/drivers/serial/s3c6400.c
new file mode 100644
index 000000000000..06936d13393f
--- /dev/null
+++ b/drivers/serial/s3c6400.c
@@ -0,0 +1,151 @@
+/* linux/drivers/serial/s3c6400.c
+ *
+ * Driver for Samsung S3C6400 and S3C6410 SoC onboard UARTs.
+ *
+ * Copyright 2008 Openmoko,  Inc.
+ * Copyright 2008 Simtec Electronics
+ *      Ben Dooks <ben@simtec.co.uk>
+ *      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 <linux/init.h>
+#include <linux/serial_core.h>
+#include <linux/serial.h>
+
+#include <asm/irq.h>
+#include <mach/hardware.h>
+
+#include <plat/regs-serial.h>
+
+#include "samsung.h"
+
+static int s3c6400_serial_setsource(struct uart_port *port,
+                                    struct s3c24xx_uart_clksrc *clk)
+{
+        unsigned long ucon = rd_regl(port, S3C2410_UCON);
+
+        if (strcmp(clk->name, "uclk0") == 0) {
+                ucon &= ~S3C6400_UCON_CLKMASK;
+                ucon |= S3C6400_UCON_UCLK0;
+        } else if (strcmp(clk->name, "uclk1") == 0)
+                ucon |= S3C6400_UCON_UCLK1;
+        else if (strcmp(clk->name, "pclk") == 0) {
+                /* See notes about transitioning from UCLK to PCLK */
+                ucon &= ~S3C6400_UCON_UCLK0;
+        } else {
+                printk(KERN_ERR "unknown clock source %s\n", clk->name);
+                return -EINVAL;
+        }
+
+        wr_regl(port, S3C2410_UCON, ucon);
+        return 0;
+}
+
+
+static int s3c6400_serial_getsource(struct uart_port *port,
+                                    struct s3c24xx_uart_clksrc *clk)
+{
+        u32 ucon = rd_regl(port, S3C2410_UCON);
+
+        clk->divisor = 1;
+
+        switch (ucon & S3C6400_UCON_CLKMASK) {
+        case S3C6400_UCON_UCLK0:
+                clk->name = "uclk0";
+                break;
+
+        case S3C6400_UCON_UCLK1:
+                clk->name = "uclk1";
+                break;
+
+        case S3C6400_UCON_PCLK:
+        case S3C6400_UCON_PCLK2:
+                clk->name = "pclk";
+                break;
+        }
+
+        return 0;
+}
+
+static int s3c6400_serial_resetport(struct uart_port *port,
+                                    struct s3c2410_uartcfg *cfg)
+{
+        unsigned long ucon = rd_regl(port, S3C2410_UCON);
+
+        dbg("s3c6400_serial_resetport: port=%p (%08lx), cfg=%p\n",
+            port, port->mapbase, cfg);
+
+        /* ensure we don't change the clock settings... */
+
+        ucon &= S3C6400_UCON_CLKMASK;
+
+        wr_regl(port, S3C2410_UCON,  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 s3c6400_uart_inf = {
+        .name           = "Samsung S3C6400 UART",
+        .type           = PORT_S3C6400,
+        .fifosize       = 64,
+        .rx_fifomask    = S3C2440_UFSTAT_RXMASK,
+        .rx_fifoshift   = S3C2440_UFSTAT_RXSHIFT,
+        .rx_fifofull    = S3C2440_UFSTAT_RXFULL,
+        .tx_fifofull    = S3C2440_UFSTAT_TXFULL,
+        .tx_fifomask    = S3C2440_UFSTAT_TXMASK,
+        .tx_fifoshift   = S3C2440_UFSTAT_TXSHIFT,
+        .get_clksrc     = s3c6400_serial_getsource,
+        .set_clksrc     = s3c6400_serial_setsource,
+        .reset_port     = s3c6400_serial_resetport,
+};
+
+/* device management */
+
+static int s3c6400_serial_probe(struct platform_device *dev)
+{
+        dbg("s3c6400_serial_probe: dev=%p\n", dev);
+        return s3c24xx_serial_probe(dev, &s3c6400_uart_inf);
+}
+
+static struct platform_driver s3c6400_serial_drv = {
+        .probe          = s3c6400_serial_probe,
+        .remove         = s3c24xx_serial_remove,
+        .driver         = {
+                .name   = "s3c6400-uart",
+                .owner  = THIS_MODULE,
+        },
+};
+
+s3c24xx_console_init(&s3c6400_serial_drv, &s3c6400_uart_inf);
+
+static int __init s3c6400_serial_init(void)
+{
+        return s3c24xx_serial_init(&s3c6400_serial_drv, &s3c6400_uart_inf);
+}
+
+static void __exit s3c6400_serial_exit(void)
+{
+        platform_driver_unregister(&s3c6400_serial_drv);
+}
+
+module_init(s3c6400_serial_init);
+module_exit(s3c6400_serial_exit);
+
+MODULE_DESCRIPTION("Samsung S3C6400,S3C6410 SoC Serial port driver");
+MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:s3c6400-uart");
diff --git a/drivers/serial/samsung.c b/drivers/serial/samsung.c
index ebeda832c8a3..ba2e8685f9f5 100644
--- a/drivers/serial/samsung.c
+++ b/drivers/serial/samsung.c
@@ -47,9 +47,9 @@
 #include <asm/irq.h>
 
 #include <mach/hardware.h>
+#include <mach/map.h>
 
 #include <plat/regs-serial.h>
-#include <mach/regs-gpio.h>
 
 #include "samsung.h"
 
@@ -61,17 +61,12 @@
 
 /* we can support 3 uarts, but not always use them */
 
-#ifdef CONFIG_CPU_S3C2400
+#if defined(CONFIG_CPU_S3C2400) || defined(CONFIG_CPU_S3C24A0)
 #define NR_PORTS (2)
 #else
 #define NR_PORTS (3)
 #endif
 
-/* port irq numbers */
-
-#define TX_IRQ(port) ((port)->irq + 1)
-#define RX_IRQ(port) ((port)->irq)
-
 /* macros to change one thing to another */
 
 #define tx_enabled(port) ((port)->unused[0])
@@ -137,8 +132,10 @@ static void s3c24xx_serial_rx_disable(struct uart_port *port)
 
 static void s3c24xx_serial_stop_tx(struct uart_port *port)
 {
+        struct s3c24xx_uart_port *ourport = to_ourport(port);
+
         if (tx_enabled(port)) {
-                disable_irq(TX_IRQ(port));
+                disable_irq(ourport->tx_irq);
                 tx_enabled(port) = 0;
                 if (port->flags & UPF_CONS_FLOW)
                         s3c24xx_serial_rx_enable(port);
@@ -147,11 +144,13 @@ static void s3c24xx_serial_stop_tx(struct uart_port *port)
 
 static void s3c24xx_serial_start_tx(struct uart_port *port)
 {
+        struct s3c24xx_uart_port *ourport = to_ourport(port);
+
         if (!tx_enabled(port)) {
                 if (port->flags & UPF_CONS_FLOW)
                         s3c24xx_serial_rx_disable(port);
 
-                enable_irq(TX_IRQ(port));
+                enable_irq(ourport->tx_irq);
                 tx_enabled(port) = 1;
         }
 }
@@ -159,9 +158,11 @@ static void s3c24xx_serial_start_tx(struct uart_port *port)
 
 static void s3c24xx_serial_stop_rx(struct uart_port *port)
 {
+        struct s3c24xx_uart_port *ourport = to_ourport(port);
+
         if (rx_enabled(port)) {
                 dbg("s3c24xx_serial_stop_rx: port=%p\n", port);
-                disable_irq(RX_IRQ(port));
+                disable_irq(ourport->rx_irq);
                 rx_enabled(port) = 0;
         }
 }
@@ -385,13 +386,13 @@ static void s3c24xx_serial_shutdown(struct uart_port *port)
         struct s3c24xx_uart_port *ourport = to_ourport(port);
 
         if (ourport->tx_claimed) {
-                free_irq(TX_IRQ(port), ourport);
+                free_irq(ourport->tx_irq, ourport);
                 tx_enabled(port) = 0;
                 ourport->tx_claimed = 0;
         }
 
         if (ourport->rx_claimed) {
-                free_irq(RX_IRQ(port), ourport);
+                free_irq(ourport->rx_irq, ourport);
                 ourport->rx_claimed = 0;
                 rx_enabled(port) = 0;
         }
@@ -408,12 +409,11 @@ static int s3c24xx_serial_startup(struct uart_port *port)
 
         rx_enabled(port) = 1;
 
-        ret = request_irq(RX_IRQ(port),
-                          s3c24xx_serial_rx_chars, 0,
+        ret = request_irq(ourport->rx_irq, s3c24xx_serial_rx_chars, 0,
                           s3c24xx_serial_portname(port), ourport);
 
         if (ret != 0) {
-                printk(KERN_ERR "cannot get irq %d\n", RX_IRQ(port));
+                printk(KERN_ERR "cannot get irq %d\n", ourport->rx_irq);
                 return ret;
         }
 
@@ -423,12 +423,11 @@ static int s3c24xx_serial_startup(struct uart_port *port)
 
         tx_enabled(port) = 1;
 
-        ret = request_irq(TX_IRQ(port),
-                          s3c24xx_serial_tx_chars, 0,
+        ret = request_irq(ourport->tx_irq, s3c24xx_serial_tx_chars, 0,
                           s3c24xx_serial_portname(port), ourport);
 
         if (ret) {
-                printk(KERN_ERR "cannot get irq %d\n", TX_IRQ(port));
+                printk(KERN_ERR "cannot get irq %d\n", ourport->tx_irq);
                 goto err;
         }
 
@@ -756,6 +755,8 @@ static const char *s3c24xx_serial_type(struct uart_port *port)
                 return "S3C2440";
         case PORT_S3C2412:
                 return "S3C2412";
+        case PORT_S3C6400:
+                return "S3C6400/10";
         default:
                 return NULL;
         }
@@ -1034,18 +1035,26 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport,
 
         dbg("resource %p (%lx..%lx)\n", res, res->start, res->end);
 
-        port->mapbase   = res->start;
-        port->membase   = S3C24XX_VA_UART + (res->start - S3C24XX_PA_UART);
+        port->mapbase = res->start;
+        port->membase = S3C_VA_UART + res->start - (S3C_PA_UART & 0xfff00000);
         ret = platform_get_irq(platdev, 0);
         if (ret < 0)
                 port->irq = 0;
-        else
+        else {
                 port->irq = ret;
+                ourport->rx_irq = ret;
+                ourport->tx_irq = ret + 1;
+        }
+        
+        ret = platform_get_irq(platdev, 1);
+        if (ret > 0)
+                ourport->tx_irq = ret;
 
         ourport->clk    = clk_get(&platdev->dev, "uart");
 
-        dbg("port: map=%08x, mem=%08x, irq=%d, clock=%ld\n",
-            port->mapbase, port->membase, port->irq, port->uartclk);
+        dbg("port: map=%08x, mem=%08x, irq=%d (%d,%d), clock=%ld\n",
+            port->mapbase, port->membase, port->irq,
+            ourport->rx_irq, ourport->tx_irq, port->uartclk);
 
         /* reset the fifos (and setup the uart) */
         s3c24xx_serial_resetport(port, cfg);
diff --git a/drivers/serial/samsung.h b/drivers/serial/samsung.h
index be263423205d..571d6b90d206 100644
--- a/drivers/serial/samsung.h
+++ b/drivers/serial/samsung.h
@@ -36,6 +36,9 @@ struct s3c24xx_uart_port {
         unsigned int                    pm_level;
         unsigned long                   baudclk_rate;
 
+        unsigned int                    rx_irq;
+        unsigned int                    tx_irq;
+
         struct s3c24xx_uart_info        *info;
         struct s3c24xx_uart_clksrc      *clksrc;
         struct clk                      *clk;