include/drivers/marvell/uart/a3700_console.h

   1 /*
   2  * Copyright (C) 2016 Marvell International Ltd.
   3  *
   4  * SPDX-License-Identifier:     BSD-3-Clause
   5  * https://spdx.org/licenses
   6  */
   7
   8 #ifndef A3700_CONSOLE_H
   9 #define A3700_CONSOLE_H
  10
  11 #include <drivers/console.h>
  12
  13 /* MVEBU UART Registers */
  14 #define UART_RX_REG             0x00
  15 #define UART_TX_REG             0x04
  16 #define UART_CTRL_REG           0x08
  17 #define UART_STATUS_REG         0x0c
  18 #define UART_BAUD_REG           0x10
  19 #define UART_POSSR_REG          0x14
  20
  21 /* FIFO Control Register bits */
  22 #define UARTFCR_FIFOMD_16450    (0 << 6)
  23 #define UARTFCR_FIFOMD_16550    (1 << 6)
  24 #define UARTFCR_RXTRIG_1        (0 << 6)
  25 #define UARTFCR_RXTRIG_4        (1 << 6)
  26 #define UARTFCR_RXTRIG_8        (2 << 6)
  27 #define UARTFCR_RXTRIG_16       (3 << 6)
  28 #define UARTFCR_TXTRIG_1        (0 << 4)
  29 #define UARTFCR_TXTRIG_4        (1 << 4)
  30 #define UARTFCR_TXTRIG_8        (2 << 4)
  31 #define UARTFCR_TXTRIG_16       (3 << 4)
  32 #define UARTFCR_DMAEN           (1 << 3)        /* Enable DMA mode */
  33 #define UARTFCR_TXCLR           (1 << 2)        /* Clear contents of Tx FIFO */
  34 #define UARTFCR_RXCLR           (1 << 1)        /* Clear contents of Rx FIFO */
  35 #define UARTFCR_FIFOEN          (1 << 0)        /* Enable the Tx/Rx FIFO */
  36
  37 /* Line Control Register bits */
  38 #define UARTLCR_DLAB            (1 << 7)        /* Divisor Latch Access */
  39 #define UARTLCR_SETB            (1 << 6)        /* Set BREAK Condition */
  40 #define UARTLCR_SETP            (1 << 5)        /* Set Parity to LCR[4] */
  41 #define UARTLCR_EVEN            (1 << 4)        /* Even Parity Format */
  42 #define UARTLCR_PAR             (1 << 3)        /* Parity */
  43 #define UARTLCR_STOP            (1 << 2)        /* Stop Bit */
  44 #define UARTLCR_WORDSZ_5        0               /* Word Length of 5 */
  45 #define UARTLCR_WORDSZ_6        1               /* Word Length of 6 */
  46 #define UARTLCR_WORDSZ_7        2               /* Word Length of 7 */
  47 #define UARTLCR_WORDSZ_8        3               /* Word Length of 8 */
  48
  49 /* Line Status Register bits */
  50 #define UARTLSR_TXFIFOFULL      (1 << 11)       /* Tx Fifo Full */
  51
  52 /* UART Control Register bits */
  53 #define UART_CTRL_RXFIFO_RESET  (1 << 14)
  54 #define UART_CTRL_TXFIFO_RESET  (1 << 15)
  55 #define UARTLSR_TXFIFOEMPTY     (1 << 6)
  56
  57 #define CONSOLE_T_A3700_BASE    CONSOLE_T_DRVDATA
  58
  59 #ifndef __ASSEMBLY__
  60
  61 #include <stdint.h>
  62
  63 typedef struct {
  64         console_t console;
  65         uintptr_t base;
  66 } console_a3700_t;
  67
  68 /*
  69  * Initialize a new a3700 console instance and register it with the console
  70  * framework. The |console| pointer must point to storage that will be valid
  71  * for the lifetime of the console, such as a global or static local variable.
  72  * Its contents will be reinitialized from scratch.
  73  */
  74 int console_a3700_register(uintptr_t baseaddr, uint32_t clock, uint32_t baud,
  75                            console_a3700_t *console);
  76
  77 #endif /*__ASSEMBLY__*/
  78
  79 #endif  /* A3700_CONSOLE_H */