include/linux/can/platform/cc770.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _CAN_PLATFORM_CC770_H
   3 #define _CAN_PLATFORM_CC770_H
   4
   5 /* CPU Interface Register (0x02) */
   6 #define CPUIF_CEN       0x01    /* Clock Out Enable */
   7 #define CPUIF_MUX       0x04    /* Multiplex */
   8 #define CPUIF_SLP       0x08    /* Sleep */
   9 #define CPUIF_PWD       0x10    /* Power Down Mode */
  10 #define CPUIF_DMC       0x20    /* Divide Memory Clock */
  11 #define CPUIF_DSC       0x40    /* Divide System Clock */
  12 #define CPUIF_RST       0x80    /* Hardware Reset Status */
  13
  14 /* Clock Out Register (0x1f) */
  15 #define CLKOUT_CD_MASK  0x0f    /* Clock Divider mask */
  16 #define CLKOUT_SL_MASK  0x30    /* Slew Rate mask */
  17 #define CLKOUT_SL_SHIFT 4
  18
  19 /* Bus Configuration Register (0x2f) */
  20 #define BUSCFG_DR0      0x01    /* Disconnect RX0 Input / Select RX input */
  21 #define BUSCFG_DR1      0x02    /* Disconnect RX1 Input / Silent mode */
  22 #define BUSCFG_DT1      0x08    /* Disconnect TX1 Output */
  23 #define BUSCFG_POL      0x20    /* Polarity dominant or recessive */
  24 #define BUSCFG_CBY      0x40    /* Input Comparator Bypass */
  25
  26 struct cc770_platform_data {
  27         u32 osc_freq;   /* CAN bus oscillator frequency in Hz */
  28
  29         u8 cir;         /* CPU Interface Register */
  30         u8 cor;         /* Clock Out Register */
  31         u8 bcr;         /* Bus Configuration Register */
  32 };
  33
  34 #endif  /* !_CAN_PLATFORM_CC770_H */