From: Changhwan Youn <chaos.y...@samsung.com>
This patch adds UART serial port support for S5PV310 CPU.
Signed-off-by: Changhwan Youn <chaos.y...@samsung.com>
Signed-off-by: Kukjin Kim <kgene....@samsung.com>
---
drivers/serial/Kconfig | 8 +++
drivers/serial/Makefile | 1 +
drivers/serial/s5pv310.c | 124 ++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 133 insertions(+), 0 deletions(-)
create mode 100644 drivers/serial/s5pv310.c
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 8b23165..b5ff41f 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -550,6 +550,14 @@ config SERIAL_S5PV210
help
Serial port support for Samsung's S5P Family of SoC's
+config SERIAL_S5PV310
+ tristate "Samsung S5PV310 Serial port support"
+ depends on SERIAL_SAMSUNG && CPU_S5PV310
+ select SERIAL_SAMSUNG_UARTS_4
+ default y
+ help
+ Serial port support for Samsung's S5P Family of SoC's
+
config SERIAL_MAX3100
tristate "MAX3100 support"
depends on SPI
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index 208a855..bd32d3f 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -45,6 +45,7 @@ obj-$(CONFIG_SERIAL_S3C2440) += s3c2440.o
obj-$(CONFIG_SERIAL_S3C24A0) += s3c24a0.o
obj-$(CONFIG_SERIAL_S3C6400) += s3c6400.o
obj-$(CONFIG_SERIAL_S5PV210) += s5pv210.o
+obj-$(CONFIG_SERIAL_S5PV310) += s5pv310.o
obj-$(CONFIG_SERIAL_MAX3100) += max3100.o
obj-$(CONFIG_SERIAL_IP22_ZILOG) += ip22zilog.o
obj-$(CONFIG_SERIAL_MUX) += mux.o
diff --git a/drivers/serial/s5pv310.c b/drivers/serial/s5pv310.c
new file mode 100644
index 0000000..1d466cf
--- /dev/null
+++ b/drivers/serial/s5pv310.c
@@ -0,0 +1,124 @@
+/* linux/drivers/serial/s5pv310.c
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com/
+ *
+ * Based on drivers/serial/s5pv210.c
+ *
+ * Driver for Samsung S5PV310 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/io.h>
+#include <linux/platform_device.h>
+#include <linux/serial_core.h>
+
+#include <plat/regs-serial.h>
+#include "samsung.h"
+
+static int s5pv310_serial_setsource(struct uart_port *port,
+ struct s3c24xx_uart_clksrc *clk)
+{
+ /* for s5pv310, serial clock source is only uclk1 */
+ return 0;
+};
+
+static int s5pv310_serial_getsource(struct uart_port *port,
+ struct s3c24xx_uart_clksrc *clk)
+{
+ /* for s5pv310, serial clock source is only uclk1 */
+ clk->divisor = 1;
+ clk->name = "uclk1";
+ return 0;
+};
+
+static int s5pv310_serial_resetport(struct uart_port *port,
+ struct s3c2410_uartcfg *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;
+}
+
+#define S5PV310_UART_DEFAULT_INFO(fifo_size) \
+ .name = "Samsung S5PV310 UART", \
+ .type = PORT_S3C6400, \
+ .fifosize = fifo_size, \
+ .has_fracval = 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 = s5pv310_serial_getsource, \
+ .set_clksrc = s5pv310_serial_setsource, \
+ .reset_port = s5pv310_serial_resetport
+
+static struct s3c24xx_uart_info s5p_port_fifo256 = {
+ S5PV310_UART_DEFAULT_INFO(256),
+};
+
+static struct s3c24xx_uart_info s5p_port_fifo64 = {
+ S5PV310_UART_DEFAULT_INFO(64),
+};
+
+static struct s3c24xx_uart_info s5p_port_fifo16 = {
+ S5PV310_UART_DEFAULT_INFO(16),
+};
+
+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 = "s5pv310-uart",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init s5pv310_serial_console_init(void)
+{
+ return s3c24xx_serial_initconsole(&s5p_serial_driver, s5p_uart_inf);
+}
+
+console_initcall(s5pv310_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:s5pv310-uart");
+MODULE_DESCRIPTION("Samsung S5PV310 UART Driver support");
+MODULE_AUTHOR("Changhwan Youn <chaos.y...@samsung.com>");
--
1.6.2.5
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