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be0524d38f
This is i.MX BSP 5.0.0 release ported to 2.6.31 Signed-off-by: Rob Herring <r.herring@freescale.com> Signed-off-by: Alan Tull <r80115@freescale.com> Signed-off-by: Xinyu Chen <xinyu.chen@freescale.com>
83 lines
2.8 KiB
C
83 lines
2.8 KiB
C
/*
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* Freescale STMP37XX/STMP378X Application UART driver
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*
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* Author: dmitry pervushin <dimka@embeddedalley.com>
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*
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* Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved.
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* Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved.
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*/
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/*
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* The code contained herein is licensed under the GNU General Public
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* License. You may obtain a copy of the GNU General Public License
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* Version 2 or later at the following locations:
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*
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* http://www.opensource.org/licenses/gpl-license.html
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* http://www.gnu.org/copyleft/gpl.html
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*/
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#ifndef __STMP_APPUART_H
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#define __STMP_APPUART_H
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#define RX_BUFFER_SIZE 4
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#define TX_BUFFER_SIZE 0xFFF0
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#include <mach/dma.h>
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/* #define RX_CHAIN 2 */
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struct stmp_appuart_port {
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int keep_irq;
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int irq[3];
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void __iomem *mem;
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u32 memsize;
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int dma_rx, dma_tx;
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struct clk *clk;
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struct device *dev;
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struct uart_port port;
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unsigned tx_buffer_index;
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struct stmp3xxx_dma_descriptor tx_desc;
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#ifndef RX_CHAIN
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struct stmp3xxx_dma_descriptor rx_desc;
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#else
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struct stmp3xxx_dma_descriptor rxd[RX_CHAIN];
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struct stmp37xx_circ_dma_chain rx_chain;
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#endif
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u32 ctrl;
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u8 running;
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spinlock_t lock; /* protects irq handler */
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};
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#ifdef CONFIG_CPU_FREQ
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static int stmp_appuart_updateclk(struct device *dev, void *clkdata);
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static int stmp_appuart_notifier(struct notifier_block *self,
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unsigned long phase, void *p);
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#endif /* CONFIG_CPU_FREQ */
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static int __init stmp_appuart_probe(struct platform_device *device);
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static int stmp_appuart_remove(struct platform_device *device);
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static int stmp_appuart_suspend(struct platform_device *device,
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pm_message_t state);
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static int stmp_appuart_resume(struct platform_device *device);
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static int __init stmp_appuart_init(void);
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static void __exit stmp_appuart_exit(void);
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static int stmp_appuart_request_port(struct uart_port *u);
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static void stmp_appuart_release_port(struct uart_port *u);
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static int stmp_appuart_verify_port(struct uart_port *u,
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struct serial_struct *);
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static void stmp_appuart_config_port(struct uart_port *u, int flags);
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static const char *stmp_appuart_type(struct uart_port *u);
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static void stmp_appuart_settermios(struct uart_port *u,
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struct ktermios *nw, struct ktermios *old);
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static void stmp_appuart_shutdown(struct uart_port *u);
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static int stmp_appuart_startup(struct uart_port *u);
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static u32 stmp_appuart_get_mctrl(struct uart_port *u);
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static void stmp_appuart_set_mctrl(struct uart_port *u, unsigned mctrl);
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static void stmp_appuart_enable_ms(struct uart_port *port);
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static void stmp_appuart_break_ctl(struct uart_port *port, int ctl);
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static unsigned int stmp_appuart_tx_empty(struct uart_port *u);
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static void stmp_appuart_stop_rx(struct uart_port *u);
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static void stmp_appuart_start_tx(struct uart_port *u);
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static void stmp_appuart_stop_tx(struct uart_port *u);
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static int stmp_appuart_copy_tx(struct uart_port *u, u8 *target, int size);
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#endif
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