Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6f75aaa72af19d3e4d144e13d59e71f51686b77f
Commit:     6f75aaa72af19d3e4d144e13d59e71f51686b77f
Parent:     1d9ef3ecd7fa2ca28064f03614f37409100c0527
Author:     Ralf Baechle <[EMAIL PROTECTED]>
AuthorDate: Fri Oct 19 18:13:33 2007 +0100
Committer:  Ralf Baechle <[EMAIL PROTECTED]>
CommitDate: Fri Oct 19 18:15:58 2007 +0100

    [MIPS] Delete totally outdated Documentation/mips/time.README
    
    Signed-off-by: Ralf Baechle <[EMAIL PROTECTED]>
---
 Documentation/mips/00-INDEX    |    2 -
 Documentation/mips/time.README |  173 ----------------------------------------
 2 files changed, 0 insertions(+), 175 deletions(-)

diff --git a/Documentation/mips/00-INDEX b/Documentation/mips/00-INDEX
index 9df8a2e..3f13bf8 100644
--- a/Documentation/mips/00-INDEX
+++ b/Documentation/mips/00-INDEX
@@ -4,5 +4,3 @@ AU1xxx_IDE.README
        - README for MIPS AU1XXX IDE driver.
 GT64120.README
        - README for dir with info on MIPS boards using GT-64120 or GT-64120A.
-time.README
-       - README for MIPS time services.
diff --git a/Documentation/mips/time.README b/Documentation/mips/time.README
deleted file mode 100644
index a4ce603..0000000
--- a/Documentation/mips/time.README
+++ /dev/null
@@ -1,173 +0,0 @@
-README for MIPS time services
-
-Jun Sun
[EMAIL PROTECTED] or [EMAIL PROTECTED]
-
-
-ABOUT
------
-This file describes the new arch/mips/kernel/time.c, related files and the 
-services they provide. 
-
-If you are short in patience and just want to know how to use time.c for a 
-new board or convert an existing board, go to the last section.
-
-
-FILES, COMPATABILITY AND CONFIGS
----------------------------------
-
-The old arch/mips/kernel/time.c is renamed to old-time.c.
-
-A new time.c is put there, together with include/asm-mips/time.h.
-
-Two configs variables are introduced, CONFIG_OLD_TIME_C and CONFIG_NEW_TIME_C.
-So we allow boards using 
-
-       1) old time.c (CONFIG_OLD_TIME_C)
-       2) new time.c (CONFIG_NEW_TIME_C)
-       3) neither (their own private time.c)
-
-However, it is expected every board will move to the new time.c in the near
-future.
-
-
-WHAT THE NEW CODE PROVIDES?
---------------------------- 
-
-The new time code provide the following services:
-
-  a) Implements functions required by Linux common code:
-       time_init
-
-  b) provides an abstraction of RTC and null RTC implementation as default.
-       extern unsigned long (*rtc_get_time)(void);
-       extern int (*rtc_set_time)(unsigned long);
-
-  c) high-level and low-level timer interrupt routines where the timer
-     interrupt source  may or may not be the CPU timer.  The high-level
-     routine is dispatched through do_IRQ() while the low-level is
-     dispatched in assemably code (usually int-handler.S)
-
-
-WHAT THE NEW CODE REQUIRES?
----------------------------
-
-For the new code to work properly, each board implementation needs to supply
-the following functions or values:
-
-  a) board_time_init - a function pointer.  Invoked at the beginnig of
-     time_init().  It is optional.
-       1. (optional) set up RTC routines
-       2. (optional) calibrate and set the mips_hpt_frequency
-
-  b) plat_timer_setup - a function pointer.  Invoked at the end of time_init()
-       1. (optional) over-ride any decisions made in time_init()
-       2. set up the irqaction for timer interrupt.
-       3. enable the timer interrupt
-
-  c) (optional) board-specific RTC routines.
-
-  d) (optional) mips_hpt_frequency - It must be definied if the board
-     is using CPU counter for timer interrupt.
-
-
-PORTING GUIDE
--------------
-
-Step 1: decide how you like to implement the time services.
-
-  a) does this board have a RTC?  If yes, implement the two RTC funcs.
-
-  b) does the CPU have counter/compare registers? 
-
-     If the answer is no, you need a timer to provide the timer interrupt
-     at 100 HZ speed.
-
-  c) The following sub steps assume your CPU has counter register.
-     Do you plan to use the CPU counter register as the timer interrupt
-     or use an exnternal timer?
-
-     In order to use CPU counter register as the timer interrupt source, you
-     must know the counter speed (mips_hpt_frequency).  It is usually the
-     same as the CPU speed or an integral divisor of it.
-
-  d) decide on whether you want to use high-level or low-level timer
-     interrupt routines.  The low-level one is presumably faster, but should
-     not make too mcuh difference.
-
-
-Step 2:  the machine setup() function
-
-  If you supply board_time_init(), set the function poointer.
-
-
-Step 3: implement rtc routines, board_time_init() and plat_timer_setup()
-  if needed.
-
-  board_time_init() -
-       a) (optional) set up RTC routines,
-        b) (optional) calibrate and set the mips_hpt_frequency
-           (only needed if you intended to use cpu counter as timer interrupt
-            source)
-
-  plat_timer_setup() -
-       a) (optional) over-write any choices made above by time_init().
-       b) machine specific code should setup the timer irqaction.
-       c) enable the timer interrupt
-
-
-  If the RTC chip is a common chip, I suggest the routines are put under
-  arch/mips/libs.  For example, for DS1386 chip, one would create
-  rtc-ds1386.c under arch/mips/lib directory.  Add the following line to
-  the arch/mips/lib/Makefile:
-
-       obj-$(CONFIG_DDB5476) += rtc-ds1386.o
-
-Step 4: if you are using low-level timer interrupt, change your interrupt
-  dispathcing code to check for timer interrupt and jump to 
-  ll_timer_interrupt() directly  if one is detected.
-
-Step 5: Modify arch/mips/config.in and add CONFIG_NEW_TIME_C to your machine.
-  Modify the appropriate defconfig if applicable.
-
-Final notes: 
-
-For some tricky cases, you may need to add your own wrapper functions 
-for some of the functions in time.c.  
-
-For example, you may define your own timer interrupt routine, which does
-some of its own processing and then calls timer_interrupt().
-
-You can also over-ride any of the built-in functions (RTC routines
-and/or timer interrupt routine).
-
-
-PORTING NOTES FOR SMP
-----------------------
-
-If you have a SMP box, things are slightly more complicated.
-
-The time service running every jiffy is logically divided into two parts:
-
-  1) the one for the whole system  (defined in timer_interrupt())
-  2) the one that should run for each CPU (defined in local_timer_interrupt())
-
-You need to decide on your timer interrupt sources.
-
-  case 1) - whole system has only one timer interrupt delivered to one CPU
-
-       In this case, you set up timer interrupt as in UP systems.  In addtion,
-       you need to set emulate_local_timer_interrupt to 1 so that other
-       CPUs get to call local_timer_interrupt().
-
-       THIS IS CURRENTLY NOT IMPLEMNETED.  However, it is rather easy to write
-       one should such a need arise.  You simply make a IPI call.
-
-  case 2) - each CPU has a separate timer interrupt
-
-       In this case, you need to set up IRQ such that each of them will
-       call local_timer_interrupt().  In addition, you need to arrange
-       one and only one of them to call timer_interrupt().
-
-       You can also do the low-level version of those interrupt routines,
-       following similar dispatching routes described above.
-
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