[mirror_ubuntu-artful-kernel.git] / drivers / tty / serial / samsung.h

/*
 * Driver for Samsung SoC onboard UARTs.
 *
 * Ben Dooks, Copyright (c) 2003-2008 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.
*/

struct s3c24xx_uart_info {
	char			*name;
	unsigned int		type;
	unsigned int		fifosize;
	unsigned long		rx_fifomask;
	unsigned long		rx_fifoshift;
	unsigned long		rx_fifofull;
	unsigned long		tx_fifomask;
	unsigned long		tx_fifoshift;
	unsigned long		tx_fifofull;
	unsigned int		def_clk_sel;
	unsigned long		num_clks;
	unsigned long		clksel_mask;
	unsigned long		clksel_shift;

	/* uart port features */

	unsigned int		has_divslot:1;

	/* uart controls */
	int (*reset_port)(struct uart_port *, struct s3c2410_uartcfg *);
};

struct s3c24xx_serial_drv_data {
	struct s3c24xx_uart_info	*info;
	struct s3c2410_uartcfg		*def_cfg;
	unsigned int			fifosize[CONFIG_SERIAL_SAMSUNG_UARTS];
};

struct s3c24xx_uart_port {
	unsigned char			rx_claimed;
	unsigned char			tx_claimed;
	unsigned int			pm_level;
	unsigned long			baudclk_rate;

	unsigned int			rx_irq;
	unsigned int			tx_irq;

	struct s3c24xx_uart_info	*info;
	struct clk			*clk;
	struct clk			*baudclk;
	struct uart_port		port;
	struct s3c24xx_serial_drv_data	*drv_data;

	/* reference to platform data */
	struct s3c2410_uartcfg		*cfg;

#ifdef CONFIG_CPU_FREQ
	struct notifier_block		freq_transition;
#endif
};

/* conversion functions */

#define s3c24xx_dev_to_port(__dev) dev_get_drvdata(__dev)

/* register access controls */

#define portaddr(port, reg) ((port)->membase + (reg))
#define portaddrl(port, reg) \
	((unsigned long *)(unsigned long)((port)->membase + (reg)))

#define rd_regb(port, reg) (__raw_readb(portaddr(port, reg)))
#define rd_regl(port, reg) (__raw_readl(portaddr(port, reg)))

#define wr_regb(port, reg, val) __raw_writeb(val, portaddr(port, reg))
#define wr_regl(port, reg, val) __raw_writel(val, portaddr(port, reg))

#if defined(CONFIG_SERIAL_SAMSUNG_DEBUG) && \
    defined(CONFIG_DEBUG_LL) && \
    !defined(MODULE)

extern void printascii(const char *);

static void dbg(const char *fmt, ...)
{
	va_list va;
	char buff[256];

	va_start(va, fmt);
	vsprintf(buff, fmt, va);
	va_end(va);

	printascii(buff);
}

#else
#define dbg(x...) do { } while (0)
#endif
Commit	Line	Data
99edb3d1	1	/*
b497549a BD	2	* Driver for Samsung SoC onboard UARTs.
b497549a BD	3	*
ccae941e	4	* Ben Dooks, Copyright (c) 2003-2008 Simtec Electronics
b497549a BD	5	* http://armlinux.simtec.co.uk/
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License version 2 as
	9	* published by the Free Software Foundation.
	10	*/
	11
	12	struct s3c24xx_uart_info {
	13	char *name;
	14	unsigned int type;
	15	unsigned int fifosize;
	16	unsigned long rx_fifomask;
	17	unsigned long rx_fifoshift;
	18	unsigned long rx_fifofull;
	19	unsigned long tx_fifomask;
	20	unsigned long tx_fifoshift;
	21	unsigned long tx_fifofull;
5f5a7a55 TA	22	unsigned int def_clk_sel;
	23	unsigned long num_clks;
	24	unsigned long clksel_mask;
	25	unsigned long clksel_shift;
b497549a	26
090f848d BD	27	/* uart port features */
	28
	29	unsigned int has_divslot:1;
	30
b497549a BD	31	/* uart controls */
	32	int (reset_port)(struct uart_port , struct s3c2410_uartcfg *);
	33	};
	34
da121506 TA	35	struct s3c24xx_serial_drv_data {
	36	struct s3c24xx_uart_info *info;
	37	struct s3c2410_uartcfg *def_cfg;
	38	unsigned int fifosize[CONFIG_SERIAL_SAMSUNG_UARTS];
	39	};
	40
b497549a BD	41	struct s3c24xx_uart_port {
	42	unsigned char rx_claimed;
	43	unsigned char tx_claimed;
30555476 BD	44	unsigned int pm_level;
30555476 BD	45	unsigned long baudclk_rate;
b497549a	46
b73c289c BD	47	unsigned int rx_irq;
	48	unsigned int tx_irq;
	49
b497549a	50	struct s3c24xx_uart_info *info;
b497549a BD	51	struct clk *clk;
	52	struct clk *baudclk;
	53	struct uart_port port;
da121506	54	struct s3c24xx_serial_drv_data *drv_data;
30555476	55
4d84e970 TA	56	/* reference to platform data */
	57	struct s3c2410_uartcfg *cfg;
	58
30555476 BD	59	#ifdef CONFIG_CPU_FREQ
	60	struct notifier_block freq_transition;
	61	#endif
b497549a BD	62	};
	63
	64	/* conversion functions */
	65
d4aab206	66	#define s3c24xx_dev_to_port(__dev) dev_get_drvdata(__dev)
b497549a BD	67
	68	/* register access controls */
	69
	70	#define portaddr(port, reg) ((port)->membase + (reg))
9fdedf5d JH	71	#define portaddrl(port, reg) \
9fdedf5d JH	72	((unsigned long *)(unsigned long)((port)->membase + (reg)))
b497549a BD	73
	74	#define rd_regb(port, reg) (__raw_readb(portaddr(port, reg)))
	75	#define rd_regl(port, reg) (__raw_readl(portaddr(port, reg)))
	76
	77	#define wr_regb(port, reg, val) __raw_writeb(val, portaddr(port, reg))
	78	#define wr_regl(port, reg, val) __raw_writel(val, portaddr(port, reg))
	79
84f57d9e AB	80	#if defined(CONFIG_SERIAL_SAMSUNG_DEBUG) && \
	81	defined(CONFIG_DEBUG_LL) && \
	82	!defined(MODULE)
b497549a BD	83
	84	extern void printascii(const char *);
	85
	86	static void dbg(const char *fmt, ...)
	87	{
	88	va_list va;
	89	char buff[256];
	90
	91	va_start(va, fmt);
	92	vsprintf(buff, fmt, va);
	93	va_end(va);
	94
	95	printascii(buff);
	96	}
	97
	98	#else
	99	#define dbg(x...) do { } while (0)
	100	#endif