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Ben Dooks
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Jul 3, 2008
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| --- | ||
| refs/heads/master: 6fc601e37bbb4045ee0afefc76b64284ea800c89 | ||
| refs/heads/master: b497549a035c2a81b71c7a27f2b00c8a16c09423 |
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| /* linux/drivers/serial/s3c240.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. | ||
| */ | ||
|
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| #include <linux/module.h> | ||
| #include <linux/ioport.h> | ||
| #include <linux/io.h> | ||
| #include <linux/platform_device.h> | ||
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| #include <asm/irq.h> | ||
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| #include <asm/hardware.h> | ||
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| #include <asm/plat-s3c/regs-serial.h> | ||
| #include <asm/arch/regs-gpio.h> | ||
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| #include "samsung.h" | ||
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| static int s3c2400_serial_getsource(struct uart_port *port, | ||
| struct s3c24xx_uart_clksrc *clk) | ||
| { | ||
| clk->divisor = 1; | ||
| clk->name = "pclk"; | ||
|
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| return 0; | ||
| } | ||
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| static int s3c2400_serial_setsource(struct uart_port *port, | ||
| struct s3c24xx_uart_clksrc *clk) | ||
| { | ||
| return 0; | ||
| } | ||
|
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| 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); | ||
|
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| wr_regl(port, S3C2410_UCON, cfg->ucon); | ||
| wr_regl(port, S3C2410_ULCON, cfg->ulcon); | ||
|
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| /* reset both fifos */ | ||
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| wr_regl(port, S3C2410_UFCON, cfg->ufcon | S3C2410_UFCON_RESETBOTH); | ||
| wr_regl(port, S3C2410_UFCON, cfg->ufcon); | ||
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| return 0; | ||
| } | ||
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| 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, | ||
| }; | ||
|
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| static int s3c2400_serial_probe(struct platform_device *dev) | ||
| { | ||
| return s3c24xx_serial_probe(dev, &s3c2400_uart_inf); | ||
| } | ||
|
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| static struct platform_driver s3c2400_serial_drv = { | ||
| .probe = s3c2400_serial_probe, | ||
| .remove = s3c24xx_serial_remove, | ||
| .driver = { | ||
| .name = "s3c2400-uart", | ||
| .owner = THIS_MODULE, | ||
| }, | ||
| }; | ||
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| s3c24xx_console_init(&s3c2400_serial_drv, &s3c2400_uart_inf); | ||
|
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| static inline int s3c2400_serial_init(void) | ||
| { | ||
| return s3c24xx_serial_init(&s3c2400_serial_drv, &s3c2400_uart_inf); | ||
| } | ||
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| static inline void s3c2400_serial_exit(void) | ||
| { | ||
| platform_driver_unregister(&s3c2400_serial_drv); | ||
| } | ||
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| module_init(s3c2400_serial_init); | ||
| module_exit(s3c2400_serial_exit); | ||
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| 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"); |
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