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  * Added 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, relative to
  20  * start of RAM. See also 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_OFS      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 #define OMAP3_UART4_AM35XX_BASE 0x4809E000      /* Only on AM35xx */
  48
  49 /* OMAP4 serial ports */
  50 #define OMAP4_UART1_BASE        OMAP2_UART1_BASE
  51 #define OMAP4_UART2_BASE        OMAP2_UART2_BASE
  52 #define OMAP4_UART3_BASE        0x48020000
  53 #define OMAP4_UART4_BASE        0x4806e000
  54
  55 /* TI81XX serial ports */
  56 #define TI81XX_UART1_BASE       0x48020000
  57 #define TI81XX_UART2_BASE       0x48022000
  58 #define TI81XX_UART3_BASE       0x48024000
  59
  60 /* AM3505/3517 UART4 */
  61 #define AM35XX_UART4_BASE       0x4809E000      /* Only on AM3505/3517 */
  62
  63 /* External port on Zoom2/3 */
  64 #define ZOOM_UART_BASE          0x10000000
  65 #define ZOOM_UART_VIRT          0xfa400000
  66
  67 #define OMAP_PORT_SHIFT         2
  68 #define OMAP7XX_PORT_SHIFT      0
  69 #define ZOOM_PORT_SHIFT         1
  70
  71 #define OMAP1510_BASE_BAUD      (12000000/16)
  72 #define OMAP16XX_BASE_BAUD      (48000000/16)
  73 #define OMAP24XX_BASE_BAUD      (48000000/16)
  74
  75 /*
  76  * DEBUG_LL port encoding stored into the UART1 scratchpad register by
  77  * decomp_setup in uncompress.h
  78  */
  79 #define OMAP1UART1              11
  80 #define OMAP1UART2              12
  81 #define OMAP1UART3              13
  82 #define OMAP2UART1              21
  83 #define OMAP2UART2              22
  84 #define OMAP2UART3              23
  85 #define OMAP3UART1              OMAP2UART1
  86 #define OMAP3UART2              OMAP2UART2
  87 #define OMAP3UART3              33
  88 #define OMAP3UART4              34              /* Only on 36xx */
  89 #define OMAP4UART1              OMAP2UART1
  90 #define OMAP4UART2              OMAP2UART2
  91 #define OMAP4UART3              43
  92 #define OMAP4UART4              44
  93 #define TI81XXUART1             81
  94 #define TI81XXUART2             82
  95 #define TI81XXUART3             83
  96 #define ZOOM_UART               95              /* Only on zoom2/3 */
  97
  98 /* This is only used by 8250.c for omap1510 */
  99 #define is_omap_port(pt)        ({int __ret = 0;                        \
 100                         if ((pt)->port.mapbase == OMAP1_UART1_BASE ||   \
 101                             (pt)->port.mapbase == OMAP1_UART2_BASE ||   \
 102                             (pt)->port.mapbase == OMAP1_UART3_BASE)     \
 103                                 __ret = 1;                              \
 104                         __ret;                                          \
 105                         })
 106
 107 #ifndef __ASSEMBLER__
 108
 109 struct omap_board_data;
 110 struct omap_uart_port_info;
 111
 112 extern void omap_serial_init(void);
 113 extern int omap_uart_can_sleep(void);
 114 extern void omap_serial_board_init(struct omap_uart_port_info *platform_data);
 115 extern void omap_serial_init_port(struct omap_board_data *bdata,
 116                 struct omap_uart_port_info *platform_data);
 117 #endif
 118
 119 #endif