arch/arm/plat-omap/include/plat/serial.h

   1 /*
   2  * arch/arm/plat-omap/include/mach/serial.h
   3  *
   4  * Copyright (C) 2009 Texas Instruments
   5  * Addded OMAP4 support- Santosh Shilimkar <santosh.shilimkar@ti.com>
   6  *
   7  * This program is distributed in the hope that it will be useful,
   8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  10  * GNU General Public License for more details.
  11  */
  12
  13 #ifndef __ASM_ARCH_SERIAL_H
  14 #define __ASM_ARCH_SERIAL_H
  15
  16 #include <linux/init.h>
  17
  18 /*
  19  * Memory entry used for the DEBUG_LL UART configuration. See also
  20  * uncompress.h and debug-macro.S.
  21  *
  22  * Note that using a memory location for storing the UART configuration
  23  * has at least two limitations:
  24  *
  25  * 1. Kernel uncompress code cannot overlap OMAP_UART_INFO as the
  26  *    uncompress code could then partially overwrite itself
  27  * 2. We assume printascii is called at least once before paging_init,
  28  *    and addruart has a chance to read OMAP_UART_INFO
  29  */
  30 #define OMAP_UART_INFO          (PHYS_OFFSET + 0x3ffc)
  31
  32 /* OMAP1 serial ports */
  33 #define OMAP1_UART1_BASE        0xfffb0000
  34 #define OMAP1_UART2_BASE        0xfffb0800
  35 #define OMAP1_UART3_BASE        0xfffb9800
  36
  37 /* OMAP2 serial ports */
  38 #define OMAP2_UART1_BASE        0x4806a000
  39 #define OMAP2_UART2_BASE        0x4806c000
  40 #define OMAP2_UART3_BASE        0x4806e000
  41
  42 /* OMAP3 serial ports */
  43 #define OMAP3_UART1_BASE        OMAP2_UART1_BASE
  44 #define OMAP3_UART2_BASE        OMAP2_UART2_BASE
  45 #define OMAP3_UART3_BASE        0x49020000
  46 #define OMAP3_UART4_BASE        0x49042000      /* Only on 36xx */
  47
  48 /* OMAP4 serial ports */
  49 #define OMAP4_UART1_BASE        OMAP2_UART1_BASE
  50 #define OMAP4_UART2_BASE        OMAP2_UART2_BASE
  51 #define OMAP4_UART3_BASE        0x48020000
  52 #define OMAP4_UART4_BASE        0x4806e000
  53
  54 /* External port on Zoom2/3 */
  55 #define ZOOM_UART_BASE          0x10000000
  56 #define ZOOM_UART_VIRT          0xfa400000
  57
  58 #define OMAP_PORT_SHIFT         2
  59 #define OMAP7XX_PORT_SHIFT      0
  60 #define ZOOM_PORT_SHIFT         1
  61
  62 #define OMAP1510_BASE_BAUD      (12000000/16)
  63 #define OMAP16XX_BASE_BAUD      (48000000/16)
  64 #define OMAP24XX_BASE_BAUD      (48000000/16)
  65
  66 /*
  67  * DEBUG_LL port encoding stored into the UART1 scratchpad register by
  68  * decomp_setup in uncompress.h
  69  */
  70 #define OMAP1UART1              11
  71 #define OMAP1UART2              12
  72 #define OMAP1UART3              13
  73 #define OMAP2UART1              21
  74 #define OMAP2UART2              22
  75 #define OMAP2UART3              23
  76 #define OMAP3UART1              OMAP2UART1
  77 #define OMAP3UART2              OMAP2UART2
  78 #define OMAP3UART3              33
  79 #define OMAP3UART4              34              /* Only on 36xx */
  80 #define OMAP4UART1              OMAP2UART1
  81 #define OMAP4UART2              OMAP2UART2
  82 #define OMAP4UART3              43
  83 #define OMAP4UART4              44
  84 #define ZOOM_UART               95              /* Only on zoom2/3 */
  85
  86 /* This is only used by 8250.c for omap1510 */
  87 #define is_omap_port(pt)        ({int __ret = 0;                        \
  88                         if ((pt)->port.mapbase == OMAP1_UART1_BASE ||   \
  89                             (pt)->port.mapbase == OMAP1_UART2_BASE ||   \
  90                             (pt)->port.mapbase == OMAP1_UART3_BASE)     \
  91                                 __ret = 1;                              \
  92                         __ret;                                          \
  93                         })
  94
  95 #ifndef __ASSEMBLER__
  96
  97 struct omap_board_data;
  98
  99 extern void __init omap_serial_early_init(void);
 100 extern void omap_serial_init(void);
 101 extern void omap_serial_init_port(struct omap_board_data *bdata);
 102 extern int omap_uart_can_sleep(void);
 103 extern void omap_uart_check_wakeup(void);
 104 extern void omap_uart_prepare_suspend(void);
 105 extern void omap_uart_prepare_idle(int num);
 106 extern void omap_uart_resume_idle(int num);
 107 extern void omap_uart_enable_irqs(int enable);
 108 #endif
 109
 110 #endif