can/platform/cc770.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef _CAN_PLATFORM_CC770_H
0003 #define _CAN_PLATFORM_CC770_H
0004
0005 /* CPU Interface Register (0x02) */
0006 #define CPUIF_CEN   0x01    /* Clock Out Enable */
0007 #define CPUIF_MUX   0x04    /* Multiplex */
0008 #define CPUIF_SLP   0x08    /* Sleep */
0009 #define CPUIF_PWD   0x10    /* Power Down Mode */
0010 #define CPUIF_DMC   0x20    /* Divide Memory Clock */
0011 #define CPUIF_DSC   0x40    /* Divide System Clock */
0012 #define CPUIF_RST   0x80    /* Hardware Reset Status */
0013
0014 /* Clock Out Register (0x1f) */
0015 #define CLKOUT_CD_MASK  0x0f    /* Clock Divider mask */
0016 #define CLKOUT_SL_MASK  0x30    /* Slew Rate mask */
0017 #define CLKOUT_SL_SHIFT 4
0018
0019 /* Bus Configuration Register (0x2f) */
0020 #define BUSCFG_DR0  0x01    /* Disconnect RX0 Input / Select RX input */
0021 #define BUSCFG_DR1  0x02    /* Disconnect RX1 Input / Silent mode */
0022 #define BUSCFG_DT1  0x08    /* Disconnect TX1 Output */
0023 #define BUSCFG_POL  0x20    /* Polarity dominant or recessive */
0024 #define BUSCFG_CBY  0x40    /* Input Comparator Bypass */
0025
0026 struct cc770_platform_data {
0027     u32 osc_freq;   /* CAN bus oscillator frequency in Hz */
0028
0029     u8 cir;     /* CPU Interface Register */
0030     u8 cor;     /* Clock Out Register */
0031     u8 bcr;     /* Bus Configuration Register */
0032 };
0033
0034 #endif  /* !_CAN_PLATFORM_CC770_H */