diff options
Diffstat (limited to 'drivers/misc/fsl_dcm.h')
| -rw-r--r-- | drivers/misc/fsl_dcm.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/drivers/misc/fsl_dcm.h b/drivers/misc/fsl_dcm.h new file mode 100644 index 0000000..722ac28 --- /dev/null +++ b/drivers/misc/fsl_dcm.h @@ -0,0 +1,129 @@ +#ifndef _FSL_DCM_H +#define _FSL_DCM_H + +/* sysfs commands for 'control' */ +#define SYSFS_DCM_CMD_STOP 0 +#define SYSFS_DCM_CMD_START 1 + +#define MAX_NAME_LEN 10 +#define MAX_FREQUENCY 48 /* max freq the DCM supports */ +#define DATA_ADDR 0x20 /* data address in DCM SRAM */ +#define CHAN_MASK 0x1FF /* 9 channel is enabled */ + +/* PIXIS register status bits */ +#define PX_OCMD_MSG (1 << 0) +#define PX_OACK_ERR (1 << 1) +#define PX_OACK_ACK (1 << 0) /* OACK is sometimes called MACK */ + +/* DCM commands */ +#define OM_END 0x00 +#define OM_SETDLY 0x01 +#define OM_RST0 0x02 +#define OM_RST1 0x03 +#define OM_CHKDLY 0x04 +#define OM_PWR 0x05 +#define OM_WAKE 0x07 +#define OM_GETMEM 0x08 +#define OM_SETMEM 0x09 +#define OM_SCLR 0x10 +#define OM_START 0x11 +#define OM_STOP 0x12 +#define OM_GET 0x13 +#define OM_ENABLE 0x14 +#define OM_TIMER 0x15 +#define OM_SNAP 0x16 +#define OM_GETMEMX 0x18 +#define OM_AVGOFF 0x19 +#define OM_AVGON 0x1A +#define OM_SETV 0x30 +#define OM_INFO 0x31 +#define OM_XINFO 0x32 + +/* Support definitions */ +#define CRCTLBIT_ENA (7) /* Set to enable collection */ +#define CRCTLBIT_IGNORE (6) /* Ignore record for voltage mangement */ +#define CRCTLBIT_FILTER (5) /* Set to enable data filtering */ +#define CRCTLBIT_GET_V2 (4) /* Record type: voltage via INA220 */ +#define CRCTLBIT_GET_I2 (3) /* Record type: current via INA220 */ +#define CRCTLBIT_GET_T (2) /* Record type: temperature via ADT7461 */ +#define CRCTLBIT_GET_I (1) /* Record type: current via PMBus device */ +#define CRCTLBIT_GET_V (0) /* Record type: voltage via PMBus device */ + +/* Bitmasks */ +#define CRCTL_ENA (1 << CRCTLBIT_ENA) +#define CRCTL_IGNORE (1 << CRCTLBIT_IGNORE) +#define CRCTL_FILTER (1 << CRCTLBIT_FILTER) +#define CRCTL_GET_V2 (1 << CRCTLBIT_GET_V2) +#define CRCTL_GET_I2 (1 << CRCTLBIT_GET_I2) +#define CRCTL_GET_T (1 << CRCTLBIT_GET_T) +#define CRCTL_GET_I (1 << CRCTLBIT_GET_I) +#define CRCTL_GET_V (1 << CRCTLBIT_GET_V) + +/* Handy definitions */ +#define CR_VOLT_PMB (CRCTL_ENA|CRCTL_FILTER|CRCTL_GET_V) +#define CR_VOLT_PMB_X (CRCTL_ENA|CRCTL_FILTER|CRCTL_GET_V|CRCTL_IGNORE) +#define CR_CURR_PMB (CRCTL_ENA|CRCTL_FILTER|CRCTL_GET_I) +#define CR_VOLT_INA (CRCTL_ENA|CRCTL_GET_V2) +#define CR_CURR_INA (CRCTL_ENA|CRCTL_GET_I2) +#define CR_TEMP (CRCTL_ENA|CRCTL_FILTER|CRCTL_GET_T) + +struct crecord { + u8 ctl; /* enabled, data type */ + u8 i2c_addr; /* target i2c address */ + u8 port; /* target port(channel) */ + __be16 curr; /* most recent sample */ + __be16 max; /* maximum value */ + __be16 num1; /* number of samples taken */ + u8 num2; + __be32 accum; /* sum of samples */ + __be16 xinfo_addr; /* pointer to XINFO structure */ +} __packed; + +struct om_info { + __be16 ver; /* DCM version number */ + u8 prescale; /* prescale value used */ + u8 timer; /* timer */ + u8 count; /* number of CRECORDS */ + __be16 addr; /* address of CRECORD array in SRAM */ + u8 res[3]; +} __packed; + +struct om_xinfo { + __be16 name_addr; /* descriptive name */ + __be16 def; /* SW-defined default */ + __be16 curr; /* SW-obtained value */ + __be16 cal; /* calibration factor */ + u8 flags; + u8 method; + __be16 get; /* get current value */ + __be16 set; /* set voltage to value */ + __be16 init; /* initialize device */ +} __packed; + +struct record { + char *name; /* record name */ + char *unit; /* record unit */ +}; + +struct dcm_board { + struct om_info info; + struct record *rec; /* per record struct */ + struct crecord *crec; /* all the collected records */ + u32 shunt; /* shunt for ina220 current */ + u32 mask; /* channel mask */ +}; + +struct fsl_dcm_data { + void __iomem *base; /* PIXIS/QIXIS base address */ + struct device *dev; + u8 __iomem *addr; /* SRAM address */ + u8 __iomem *data; /* SRAM data */ + u8 __iomem *ocmd; /* DCM command/status */ + u8 __iomem *omsg; /* DCM message */ + u8 __iomem *mack; /* DCM acknowledge */ + u8 timer; + int running; + struct dcm_board board; +}; + +#endif |