From ab4382d27412e7e3e7c936e8d50d8888dfac3df8 Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@suse.de>
Date: Thu, 13 Jan 2011 12:10:18 -0800
Subject: tty: move drivers/serial/ to drivers/tty/serial/

The serial drivers are really just tty drivers, so move them to
drivers/tty/ to make things a bit neater overall.

This is part of the tty/serial driver movement proceedure as proposed by
Arnd Bergmann and approved by everyone involved a number of months ago.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Rogier Wolff <R.E.Wolff@bitwizard.nl>
Cc: Michael H. Warfield <mhw@wittsend.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/tty/serial/s5pv210.c | 162 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 162 insertions(+)
 create mode 100644 drivers/tty/serial/s5pv210.c

(limited to 'drivers/tty/serial/s5pv210.c')

diff --git a/drivers/tty/serial/s5pv210.c b/drivers/tty/serial/s5pv210.c
new file mode 100644
index 000000000000..6ebccd70a707
--- /dev/null
+++ b/drivers/tty/serial/s5pv210.c
@@ -0,0 +1,162 @@
+/* linux/drivers/serial/s5pv210.c
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com/
+ *
+ * Based on drivers/serial/s3c6400.c
+ *
+ * Driver for Samsung S5PV210 SoC UARTs.
+ *
+ * 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 s5pv210_serial_setsource(struct uart_port *port,
+					struct s3c24xx_uart_clksrc *clk)
+{
+	struct s3c2410_uartcfg *cfg = port->dev->platform_data;
+	unsigned long ucon = rd_regl(port, S3C2410_UCON);
+
+	if ((cfg->clocks_size) == 1)
+		return 0;
+
+	if (strcmp(clk->name, "pclk") == 0)
+		ucon &= ~S5PV210_UCON_CLKMASK;
+	else if (strcmp(clk->name, "uclk1") == 0)
+		ucon |= S5PV210_UCON_CLKMASK;
+	else {
+		printk(KERN_ERR "unknown clock source %s\n", clk->name);
+		return -EINVAL;
+	}
+
+	wr_regl(port, S3C2410_UCON, ucon);
+	return 0;
+}
+
+
+static int s5pv210_serial_getsource(struct uart_port *port,
+					struct s3c24xx_uart_clksrc *clk)
+{
+	struct s3c2410_uartcfg *cfg = port->dev->platform_data;
+	u32 ucon = rd_regl(port, S3C2410_UCON);
+
+	clk->divisor = 1;
+
+	if ((cfg->clocks_size) == 1)
+		return 0;
+
+	switch (ucon & S5PV210_UCON_CLKMASK) {
+	case S5PV210_UCON_PCLK:
+		clk->name = "pclk";
+		break;
+	case S5PV210_UCON_UCLK:
+		clk->name = "uclk1";
+		break;
+	}
+
+	return 0;
+}
+
+static int s5pv210_serial_resetport(struct uart_port *port,
+					struct s3c2410_uartcfg *cfg)
+{
+	unsigned long ucon = rd_regl(port, S3C2410_UCON);
+
+	ucon &= S5PV210_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;
+}
+
+#define S5PV210_UART_DEFAULT_INFO(fifo_size)			\
+		.name		= "Samsung S5PV210 UART0",	\
+		.type		= PORT_S3C6400,			\
+		.fifosize	= fifo_size,			\
+		.has_divslot	= 1,				\
+		.rx_fifomask	= S5PV210_UFSTAT_RXMASK,	\
+		.rx_fifoshift	= S5PV210_UFSTAT_RXSHIFT,	\
+		.rx_fifofull	= S5PV210_UFSTAT_RXFULL,	\
+		.tx_fifofull	= S5PV210_UFSTAT_TXFULL,	\
+		.tx_fifomask	= S5PV210_UFSTAT_TXMASK,	\
+		.tx_fifoshift	= S5PV210_UFSTAT_TXSHIFT,	\
+		.get_clksrc	= s5pv210_serial_getsource,	\
+		.set_clksrc	= s5pv210_serial_setsource,	\
+		.reset_port	= s5pv210_serial_resetport
+
+static struct s3c24xx_uart_info s5p_port_fifo256 = {
+	S5PV210_UART_DEFAULT_INFO(256),
+};
+
+static struct s3c24xx_uart_info s5p_port_fifo64 = {
+	S5PV210_UART_DEFAULT_INFO(64),
+};
+
+static struct s3c24xx_uart_info s5p_port_fifo16 = {
+	S5PV210_UART_DEFAULT_INFO(16),
+};
+
+static struct s3c24xx_uart_info *s5p_uart_inf[] = {
+	[0] = &s5p_port_fifo256,
+	[1] = &s5p_port_fifo64,
+	[2] = &s5p_port_fifo16,
+	[3] = &s5p_port_fifo16,
+};
+
+/* device management */
+static int s5p_serial_probe(struct platform_device *pdev)
+{
+	return s3c24xx_serial_probe(pdev, s5p_uart_inf[pdev->id]);
+}
+
+static struct platform_driver s5p_serial_driver = {
+	.probe		= s5p_serial_probe,
+	.remove		= __devexit_p(s3c24xx_serial_remove),
+	.driver		= {
+		.name	= "s5pv210-uart",
+		.owner	= THIS_MODULE,
+	},
+};
+
+static int __init s5pv210_serial_console_init(void)
+{
+	return s3c24xx_serial_initconsole(&s5p_serial_driver, s5p_uart_inf);
+}
+
+console_initcall(s5pv210_serial_console_init);
+
+static int __init s5p_serial_init(void)
+{
+	return s3c24xx_serial_init(&s5p_serial_driver, *s5p_uart_inf);
+}
+
+static void __exit s5p_serial_exit(void)
+{
+	platform_driver_unregister(&s5p_serial_driver);
+}
+
+module_init(s5p_serial_init);
+module_exit(s5p_serial_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:s5pv210-uart");
+MODULE_DESCRIPTION("Samsung S5PV210 UART Driver support");
+MODULE_AUTHOR("Thomas Abraham <thomas.ab@samsung.com>");
-- 
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