script to generate si5338 initialization DT data from SiLabs ClockBuilder(tm) output

#!/usr/bin/env python

#***************************************************************************

# FILE NAME  : si5338_register_map_dts.py

# DESCRIPTION: convert si5338 register map file generated by Silicon Labs

# ClockBuilder(tm) Desktop Software into a device tree fragment, compatible

# with drivers/misc/si5338.c

# AUTHOR: Oleg Dzhimiev <oleg@elphel.com>

# Copyright (C) 2013 Elphel, Inc

# -----------------------------------------------------------------------------**

#  This program is free software: you can redistribute it and/or modify

#  it under the terms of the GNU General Public License as published by

#  the Free Software Foundation, either version 3 of the License, or

#  (at your option) any later version.

#

#  This program is distributed in the hope that it will be useful,

#  but WITHOUT ANY WARRANTY; without even the implied warranty of

#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

#  GNU General Public License for more details.

#

#  The four essential freedoms with GNU GPL software:

#  * to run the program for any purpose

#  * to study how the program works and change it to make it do what you wish

#  * to redistribute copies so you can help your neighbor

#  * to distribute copies of your modified versions to others

#

#  You should have received a copy of the GNU General Public License

#  along with this program.  If not, see <http://www.gnu.org/licenses/>.

# -----------------------------------------------------------------------------**

__author__ = "Oleg Dzhimiev"

__copyright__ = "Copyright 2013, Elphel, Inc."

__license__ = "GPL"

__version__ = "3.0+"

__maintainer__ = "Oleg Dzhimiev"

__email__ = "oleg@elphel.com"

__status__ = "Development"

import sys

try:

    File = sys.argv[1]

except IndexError:

    print '''

Usage - terminal:

  a) ./register_map_dts.py <file>

  b) python register_map_dts.py <file>

  where <file> is a *.h generated by Si5338 ClockBuilder

Example:

  ./register_map_dts.py register_map.h

Output:

  <file>.dts

'''

    sys.exit()

dts_record_start = '''ps7_axi_interconnect_0: amba@0 {

	ps7_i2c_0: ps7-i2c@e0004000 {

		si5338@70 {

			compatible = "sil,si5338";

			reg = <0x70>;

			si5338,init="always"; /* initialize PLL, wait for lock. Other option is 'if off'*/

			si5338,configuration_data=<

			'''

dts_record_end = '''

			>;

		};

	};

};

'''

class RegisterMapParser:

    def __init__(self,File):

	self.File = File

    def generate_dts(self):

        print "Parsing "+self.File+".\n"

        i,page,tmpstr = 0,0,""

        with open(self.File,'r') as f_r:

            for line in f_r:

                if line[0]=='{':

#                    i+=1

                    line = line[line.find('{')+1:line.find('}')]

                    values = line.split(',')

                    if values[0]=='255':

                        page = int(values[1],16)

                    else:

                        if int(values[2],16) != 0 :

                            result = hex(((256*page+int(values[0]))<<16)+(int(values[1],16)<<8)+int(values[2],16))

                            tmpstr += result+" "

                            i+=1

                            if i%8==0 : tmpstr += "\n\t\t\t"

        return tmpstr

Parser = RegisterMapParser(File)

with open(File+".dts",'w') as f_w:

  f_w.write(dts_record_start+Parser.generate_dts()+dts_record_end)