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android_kernel_xiaomi_sdm845/include/asm-sparc/mostek.h
Adrian Bunk c61c65cdcd sparc/kernel/: possible cleanups 
This patch contains the following possible cleanups:
- make the following needlessly global code static:
  - apc.c: apc_swift_idle()
  - ebus.c: ebus_blacklist_irq()
  - ebus.c: fill_ebus_child()
  - ebus.c: fill_ebus_device()
  - entry.S: syscall_is_too_hard
  - etra: tsetup_sun4c_stackchk
  - head.S: cputyp
  - head.S: prom_vector_p
  - idprom.c: Sun_Machines[]
  - ioport.c: _sparc_find_resource()
  - ioport.c: create_proc_read_entry()
  - irq.c: struct sparc_irq[]
  - rtrap.S: sun4c_rett_stackchk
  - setup.c: prom_sync_me()
  - setup.c: boot_flags
  - sun4c_irq.c: sun4c_sbint_to_irq()
  - sun4d_irq.c: sbus_tid[]
  - sun4d_irq.c: struct sbus_actions
  - sun4d_irq.c: sun4d_sbint_to_irq()
  - sun4m_irq.c: sun4m_sbint_to_irq()
  - sun4m_irq.c: sun4m_get_irqmask()
  - sun4m_irq.c: sun4m_timers
  - sun4m_smp.c: smp4m_cross_call()
  - sun4m_smp.c: smp4m_blackbox_id()
  - sun4m_smp.c: smp4m_blackbox_current()
  - time.c: sp_clock_typ
  - time.c: sbus_time_init()
  - traps.c: instruction_dump()
  - wof.S: spwin_sun4c_stackchk
  - wuf.S: sun4c_fwin_stackchk
- #if 0 the following unused code:
  - process.c: sparc_backtrace_lock
  - process.c: __show_backtrace()
  - process.c: show_backtrace()
  - process.c: smp_show_backtrace_all_cpus()
- remove the following unused code:
  - entry.S: __handle_exception
  - smp.c: smp_num_cpus
  - smp.c: smp_activated
  - smp.c: __cpu_number_map[]
  - smp.c: __cpu_logical_map[]
  - smp.c: bitops_spinlock
  - traps.c: trap_curbuf
  - traps.c: trapbuf[]
  - traps.c: linux_smp_still_initting
  - traps.c: thiscpus_tbr
  - traps.c: thiscpus_mid

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-17 21:37:46 -07:00

172 lines
6.4 KiB
C
Raw Blame History

/*
* mostek.h: Describes the various Mostek time of day clock registers.
*
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
* Copyright (C) 1996 Thomas K. Dyas (tdyas@eden.rutgers.edu)
* Added intersil code 05/25/98 Chris Davis (cdavis@cois.on.ca)
*/
#ifndef _SPARC_MOSTEK_H
#define _SPARC_MOSTEK_H
#include <asm/idprom.h>
#include <asm/io.h>
/* M48T02 Register Map (adapted from Sun NVRAM/Hostid FAQ)
*
* Data
* Address Function
* Bit 7 Bit 6 Bit 5 Bit 4Bit 3 Bit 2 Bit 1 Bit 0
* 7ff - - - - - - - - Year 00-99
* 7fe 0 0 0 - - - - - Month 01-12
* 7fd 0 0 - - - - - - Date 01-31
* 7fc 0 FT 0 0 0 - - - Day 01-07
* 7fb KS 0 - - - - - - Hours 00-23
* 7fa 0 - - - - - - - Minutes 00-59
* 7f9 ST - - - - - - - Seconds 00-59
* 7f8 W R S - - - - - Control
*
* * ST is STOP BIT
* * W is WRITE BIT
* * R is READ BIT
* * S is SIGN BIT
* * FT is FREQ TEST BIT
* * KS is KICK START BIT
*/
/* The Mostek 48t02 real time clock and NVRAM chip. The registers
* other than the control register are in binary coded decimal. Some
* control bits also live outside the control register.
*/
#define mostek_read(_addr) readb(_addr)
#define mostek_write(_addr,_val) writeb(_val, _addr)
#define MOSTEK_EEPROM 0x0000UL
#define MOSTEK_IDPROM 0x07d8UL
#define MOSTEK_CREG 0x07f8UL
#define MOSTEK_SEC 0x07f9UL
#define MOSTEK_MIN 0x07faUL
#define MOSTEK_HOUR 0x07fbUL
#define MOSTEK_DOW 0x07fcUL
#define MOSTEK_DOM 0x07fdUL
#define MOSTEK_MONTH 0x07feUL
#define MOSTEK_YEAR 0x07ffUL
struct mostek48t02 {
volatile char eeprom[2008]; /* This is the eeprom, don't touch! */
struct idprom idprom; /* The idprom lives here. */
volatile unsigned char creg; /* Control register */
volatile unsigned char sec; /* Seconds (0-59) */
volatile unsigned char min; /* Minutes (0-59) */
volatile unsigned char hour; /* Hour (0-23) */
volatile unsigned char dow; /* Day of the week (1-7) */
volatile unsigned char dom; /* Day of the month (1-31) */
volatile unsigned char month; /* Month of year (1-12) */
volatile unsigned char year; /* Year (0-99) */
};
extern spinlock_t mostek_lock;
extern void __iomem *mstk48t02_regs;
/* Control register values. */
#define MSTK_CREG_WRITE 0x80 /* Must set this before placing values. */
#define MSTK_CREG_READ 0x40 /* Stop updates to allow a clean read. */
#define MSTK_CREG_SIGN 0x20 /* Slow/speed clock in calibration mode. */
/* Control bits that live in the other registers. */
#define MSTK_STOP 0x80 /* Stop the clock oscillator. (sec) */
#define MSTK_KICK_START 0x80 /* Kick start the clock chip. (hour) */
#define MSTK_FREQ_TEST 0x40 /* Frequency test mode. (day) */
#define MSTK_YEAR_ZERO 1968 /* If year reg has zero, it is 1968. */
#define MSTK_CVT_YEAR(yr) ((yr) + MSTK_YEAR_ZERO)
/* Masks that define how much space each value takes up. */
#define MSTK_SEC_MASK 0x7f
#define MSTK_MIN_MASK 0x7f
#define MSTK_HOUR_MASK 0x3f
#define MSTK_DOW_MASK 0x07
#define MSTK_DOM_MASK 0x3f
#define MSTK_MONTH_MASK 0x1f
#define MSTK_YEAR_MASK 0xffU
/* Binary coded decimal conversion macros. */
#define MSTK_REGVAL_TO_DECIMAL(x) (((x) & 0x0F) + 0x0A * ((x) >> 0x04))
#define MSTK_DECIMAL_TO_REGVAL(x) ((((x) / 0x0A) << 0x04) + ((x) % 0x0A))
/* Generic register set and get macros for internal use. */
#define MSTK_GET(regs,var,mask) (MSTK_REGVAL_TO_DECIMAL(((struct mostek48t02 *)regs)->var & MSTK_ ## mask ## _MASK))
#define MSTK_SET(regs,var,value,mask) do { ((struct mostek48t02 *)regs)->var &= ~(MSTK_ ## mask ## _MASK); ((struct mostek48t02 *)regs)->var |= MSTK_DECIMAL_TO_REGVAL(value) & (MSTK_ ## mask ## _MASK); } while (0)
/* Macros to make register access easier on our fingers. These give you
* the decimal value of the register requested if applicable. You pass
* the a pointer to a 'struct mostek48t02'.
*/
#define MSTK_REG_CREG(regs) (((struct mostek48t02 *)regs)->creg)
#define MSTK_REG_SEC(regs) MSTK_GET(regs,sec,SEC)
#define MSTK_REG_MIN(regs) MSTK_GET(regs,min,MIN)
#define MSTK_REG_HOUR(regs) MSTK_GET(regs,hour,HOUR)
#define MSTK_REG_DOW(regs) MSTK_GET(regs,dow,DOW)
#define MSTK_REG_DOM(regs) MSTK_GET(regs,dom,DOM)
#define MSTK_REG_MONTH(regs) MSTK_GET(regs,month,MONTH)
#define MSTK_REG_YEAR(regs) MSTK_GET(regs,year,YEAR)
#define MSTK_SET_REG_SEC(regs,value) MSTK_SET(regs,sec,value,SEC)
#define MSTK_SET_REG_MIN(regs,value) MSTK_SET(regs,min,value,MIN)
#define MSTK_SET_REG_HOUR(regs,value) MSTK_SET(regs,hour,value,HOUR)
#define MSTK_SET_REG_DOW(regs,value) MSTK_SET(regs,dow,value,DOW)
#define MSTK_SET_REG_DOM(regs,value) MSTK_SET(regs,dom,value,DOM)
#define MSTK_SET_REG_MONTH(regs,value) MSTK_SET(regs,month,value,MONTH)
#define MSTK_SET_REG_YEAR(regs,value) MSTK_SET(regs,year,value,YEAR)
/* The Mostek 48t08 clock chip. Found on Sun4m's I think. It has the
* same (basically) layout of the 48t02 chip except for the extra
* NVRAM on board (8 KB against the 48t02's 2 KB).
*/
struct mostek48t08 {
char offset[6*1024]; /* Magic things may be here, who knows? */
struct mostek48t02 regs; /* Here is what we are interested in. */
};
#ifdef CONFIG_SUN4
enum sparc_clock_type { MSTK48T02, MSTK48T08, \
INTERSIL, MSTK_INVALID };
#else
enum sparc_clock_type { MSTK48T02, MSTK48T08, \
MSTK_INVALID };
#endif
#ifdef CONFIG_SUN4
/* intersil on a sun 4/260 code data from harris doc */
struct intersil_dt {
volatile unsigned char int_csec;
volatile unsigned char int_hour;
volatile unsigned char int_min;
volatile unsigned char int_sec;
volatile unsigned char int_month;
volatile unsigned char int_day;
volatile unsigned char int_year;
volatile unsigned char int_dow;
};
struct intersil {
struct intersil_dt clk;
struct intersil_dt cmp;
volatile unsigned char int_intr_reg;
volatile unsigned char int_cmd_reg;
};
#define INTERSIL_STOP 0x0
#define INTERSIL_START 0x8
#define INTERSIL_INTR_DISABLE 0x0
#define INTERSIL_INTR_ENABLE 0x10
#define INTERSIL_32K 0x0
#define INTERSIL_NORMAL 0x0
#define INTERSIL_24H 0x4
#define INTERSIL_INT_100HZ 0x2
/* end of intersil info */
#endif
#endif /* !(_SPARC_MOSTEK_H) */
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