serial.h

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/*
 * arch/arm/plat-omap/include/mach/serial.h
 *
 * Copyright (C) 2009 Texas Instruments
 * Added OMAP4 support- Santosh Shilimkar <[email protected]>
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 */

#ifndef __ASM_ARCH_SERIAL_H
#define __ASM_ARCH_SERIAL_H

#include <linux/init.h>

/*
 * Memory entry used for the DEBUG_LL UART configuration, relative to
 * start of RAM. See also uncompress.h and debug-macro.S.
 *
 * Note that using a memory location for storing the UART configuration
 * has at least two limitations:
 *
 * 1. Kernel uncompress code cannot overlap OMAP_UART_INFO as the
 *    uncompress code could then partially overwrite itself
 * 2. We assume printascii is called at least once before paging_init,
 *    and addruart has a chance to read OMAP_UART_INFO
 */
#define OMAP_UART_INFO_OFS  0x3ffc

/* OMAP1 serial ports */
#define OMAP1_UART1_BASE    0xfffb0000
#define OMAP1_UART2_BASE    0xfffb0800
#define OMAP1_UART3_BASE    0xfffb9800

/* OMAP2 serial ports */
#define OMAP2_UART1_BASE    0x4806a000
#define OMAP2_UART2_BASE    0x4806c000
#define OMAP2_UART3_BASE    0x4806e000

/* OMAP3 serial ports */
#define OMAP3_UART1_BASE    OMAP2_UART1_BASE
#define OMAP3_UART2_BASE    OMAP2_UART2_BASE
#define OMAP3_UART3_BASE    0x49020000
#define OMAP3_UART4_BASE    0x49042000  /* Only on 36xx */
#define OMAP3_UART4_AM35XX_BASE 0x4809E000  /* Only on AM35xx */

/* OMAP4 serial ports */
#define OMAP4_UART1_BASE    OMAP2_UART1_BASE
#define OMAP4_UART2_BASE    OMAP2_UART2_BASE
#define OMAP4_UART3_BASE    0x48020000
#define OMAP4_UART4_BASE    0x4806e000

/* TI81XX serial ports */
#define TI81XX_UART1_BASE   0x48020000
#define TI81XX_UART2_BASE   0x48022000
#define TI81XX_UART3_BASE   0x48024000

/* AM3505/3517 UART4 */
#define AM35XX_UART4_BASE   0x4809E000  /* Only on AM3505/3517 */

/* AM33XX serial port */
#define AM33XX_UART1_BASE   0x44E09000

/* OMAP5 serial ports */
#define OMAP5_UART1_BASE    OMAP2_UART1_BASE
#define OMAP5_UART2_BASE    OMAP2_UART2_BASE
#define OMAP5_UART3_BASE    OMAP4_UART3_BASE
#define OMAP5_UART4_BASE    OMAP4_UART4_BASE
#define OMAP5_UART5_BASE    0x48066000
#define OMAP5_UART6_BASE    0x48068000

/* External port on Zoom2/3 */
#define ZOOM_UART_BASE      0x10000000
#define ZOOM_UART_VIRT      0xfa400000

#define OMAP_PORT_SHIFT     2
#define OMAP7XX_PORT_SHIFT  0
#define ZOOM_PORT_SHIFT     1

#define OMAP1510_BASE_BAUD  (12000000/16)
#define OMAP16XX_BASE_BAUD  (48000000/16)
#define OMAP24XX_BASE_BAUD  (48000000/16)

/*
 * DEBUG_LL port encoding stored into the UART1 scratchpad register by
 * decomp_setup in uncompress.h
 */
#define OMAP1UART1      11
#define OMAP1UART2      12
#define OMAP1UART3      13
#define OMAP2UART1      21
#define OMAP2UART2      22
#define OMAP2UART3      23
#define OMAP3UART1      OMAP2UART1
#define OMAP3UART2      OMAP2UART2
#define OMAP3UART3      33
#define OMAP3UART4      34      /* Only on 36xx */
#define OMAP4UART1      OMAP2UART1
#define OMAP4UART2      OMAP2UART2
#define OMAP4UART3      43
#define OMAP4UART4      44
#define TI81XXUART1     81
#define TI81XXUART2     82
#define TI81XXUART3     83
#define AM33XXUART1     84
#define OMAP5UART3      OMAP4UART3
#define OMAP5UART4      OMAP4UART4
#define ZOOM_UART       95      /* Only on zoom2/3 */

/* This is only used by 8250.c for omap1510 */
#define is_omap_port(pt)    ({int __ret = 0;            \
            if ((pt)->port.mapbase == OMAP1_UART1_BASE ||   \
                (pt)->port.mapbase == OMAP1_UART2_BASE ||   \
                (pt)->port.mapbase == OMAP1_UART3_BASE) \
                __ret = 1;              \
            __ret;                      \
            })

#ifndef __ASSEMBLER__

struct omap_board_data;
struct omap_uart_port_info;

extern void omap_serial_init(void);
extern void omap_serial_board_init(struct omap_uart_port_info *platform_data);
extern void omap_serial_init_port(struct omap_board_data *bdata,
        struct omap_uart_port_info *platform_data);
#endif

#endif