发自 Outlook<http://aka.ms/weboutlook>
diff -Nrua /home/c/development/rtems/rtems-src/testsuites/samples/i2c0/i2c0.doc /home/c/development/rtems/rtems-s/testsuites/samples/i2c0/i2c0.doc --- /home/c/development/rtems/rtems-src/testsuites/samples/i2c0/i2c0.doc 1970-01-01 08:00:00.000000000 +0800 +++ /home/c/development/rtems/rtems-s/testsuites/samples/i2c0/i2c0.doc 2017-01-12 11:11:31.049105940 +0800 @@ -0,0 +1,7 @@ +# COPYRIGHT (c) 1989-1999. +# On-Line Applications Research Corporation (OAR). +# +# The license and distribution terms for this file may be +# found in the file LICENSE in this distribution or at +# http://www.rtems.org/license/LICENSE. +# diff -Nrua /home/c/development/rtems/rtems-src/testsuites/samples/i2c0/i2c0.scn /home/c/development/rtems/rtems-s/testsuites/samples/i2c0/i2c0.scn --- /home/c/development/rtems/rtems-src/testsuites/samples/i2c0/i2c0.scn 1970-01-01 08:00:00.000000000 +0800 +++ /home/c/development/rtems/rtems-s/testsuites/samples/i2c0/i2c0.scn 2017-01-11 19:11:58.881597608 +0800 @@ -0,0 +1,3 @@ +*** I2C0 HELLO WORLD TEST *** +i2c0 Hello World +*** END OF HELLO WORLD TEST *** diff -Nrua /home/c/development/rtems/rtems-src/testsuites/samples/i2c0/init.c /home/c/development/rtems/rtems-s/testsuites/samples/i2c0/init.c --- /home/c/development/rtems/rtems-src/testsuites/samples/i2c0/init.c 1970-01-01 08:00:00.000000000 +0800 +++ /home/c/development/rtems/rtems-s/testsuites/samples/i2c0/init.c 2017-02-21 16:48:29.502605698 +0800 @@ -0,0 +1,197 @@ +/* + * COPYRIGHT (c) 1989-2012. + * On-Line Applications Research Corporation (OAR). + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif +#include <rtems/test.h> +#include <stdio.h> +#include <bsp/i2c.h> +#include <libcpu/am335x.h> +#include <rtems.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <rtems/score/assert.h> +#include <dev/i2c/eeprom.h> + +#include <rtems/shell.h> +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> +#include <rtems/userenv.h> + +#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER +#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER +#define CONFIGURE_APPLICATION_NEEDS_STUB_DRIVER +#define CONFIGURE_APPLICATION_NEEDS_ZERO_DRIVER +#define CONFIGURE_APPLICATION_NEEDS_LIBBLOCK + +#define CONFIGURE_USE_IMFS_AS_BASE_FILESYSTEM + +#define CONFIGURE_LIBIO_MAXIMUM_FILE_DESCRIPTORS 32 + +#define CONFIGURE_MAXIMUM_USER_EXTENSIONS 1 + +#define CONFIGURE_UNLIMITED_ALLOCATION_SIZE 32 +#define CONFIGURE_UNLIMITED_OBJECTS +#define CONFIGURE_UNIFIED_WORK_AREAS + +#define CONFIGURE_STACK_CHECKER_ENABLED + +#define CONFIGURE_RTEMS_INIT_TASKS_TABLE + +#define CONFIGURE_INIT_TASK_INITIAL_MODES RTEMS_DEFAULT_MODES +#define CONFIGURE_INIT_TASK_ATTRIBUTES RTEMS_FLOATING_POINT + +#define CONFIGURE_INIT + +#include <rtems/confdefs.h> + + +#define CONFIGURE_SHELL_COMMAND_CP +#define CONFIGURE_SHELL_COMMAND_PWD +#define CONFIGURE_SHELL_COMMAND_LS +#define CONFIGURE_SHELL_COMMAND_LN +#define CONFIGURE_SHELL_COMMAND_LSOF +#define CONFIGURE_SHELL_COMMAND_CHDIR +#define CONFIGURE_SHELL_COMMAND_CD +#define CONFIGURE_SHELL_COMMAND_MKDIR +#define CONFIGURE_SHELL_COMMAND_RMDIR +#define CONFIGURE_SHELL_COMMAND_CAT +#define CONFIGURE_SHELL_COMMAND_MV +#define CONFIGURE_SHELL_COMMAND_RM +#define CONFIGURE_SHELL_COMMAND_MALLOC_INFO +#include <rtems/shellconfig.h> + + +/* I2C address of CAT24C256 eeprom + EEPROM SIZE 32 KB Ref: BBB SRM */ +#define I2C_SLAVE_ADDR (0x50) +#define EEPROM_SIZE 78 +#define EEPROM_PATH "/dev/i2c-0.eeprom" + +/* forward declarations to avoid warnings */ +rtems_task Init(rtems_task_argument argument); + +const char rtems_test_name[] = "GSOC 2016 I2C TESTING"; +rtems_printer rtems_test_printer; + + +rtems_task Init( + rtems_task_argument ignored +) +{ + + rtems_test_begin(); + int i; + int rv,fd_bus,fd_in_dev; + uint8_t in[EEPROM_SIZE]; + struct stat st; + off_t off; + ssize_t n; + + rtems_shell_env_t env; + + + + /*bus registration */ + rv = bbb_register_i2c_0(); + printf("bus registration \n"); + // bus_PATH, i2c_base, clock_speed, irq + fd_bus = open(BBB_I2C_0_BUS_PATH, O_RDWR); + printf("open bus \n"); + //assert(fd_bus >= 0); + + /* I2C EEPROM registration */ + rv = i2c_dev_register_eeprom( + BBB_I2C_0_BUS_PATH, // bus path + EEPROM_PATH, //dev path + I2C_SLAVE_ADDR, // slave addr + 2, //address_byte + 64, // page_size_in_bytes + 256, // size_in_bytes + 0 // program time out in ms + ); + + + + _Assert(rv == 0); +// exit( 0 ); + printf("register EEPROM \n"); + fd_in_dev = open(EEPROM_PATH, O_RDWR); + printf("fd_in_dev:%d\n", fd_in_dev); + _Assert(fd_in_dev >=0); + + + printf("open eeprom \n"); + rv = fstat(fd_in_dev, &st); + _Assert(rv == 0); + _Assert(st.st_blksize == 8); + _Assert(st.st_size == sizeof(in)); + +printf("read func\n"); + + n = read(fd_in_dev, &in[0], sizeof(in)); + printf("n:%d\n",n ); + printf("0:%x, ",in[0]); + printf("1:%x, ",in[1]); + + for(i=0;i<sizeof(in);++i) + { +printf("%x\n",in[i]); + + } + + + + printf("sizeof(in):%d\n", sizeof(in)); + + + + // _Assert(n == -1); +/* +printf("test\n"); + for ( i = 0; i < sizeof(in); ++i) { + printf("i:%d\n",i); + off = lseek(fd_in_dev, 0, SEEK_SET); + printf("lseek func done!\n"); + rv = read(fd_in_dev,&in[0], sizeof(in)); + // printf("\n %s \n ",in[i]); + } + */ + printf("EXIT from test case"); + close(fd_bus); + unlink(BBB_I2C_2_BUS_PATH); + + rtems_test_end(); +} + +#define CONFIGURE_MICROSECONDS_PER_TICK 2000 +#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER +#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER +#define CONFIGURE_LIBIO_MAXIMUM_FILE_DESCRIPTORS 7 + +#define CONFIGURE_MAXIMUM_TASKS 1 +#define CONFIGURE_FILESYSTEM_IMFS + +#define CONFIGURE_MAXIMUM_SEMAPHORES 1 + +#define CONFIGURE_RTEMS_INIT_TASKS_TABLE + +#define CONFIGURE_INIT_TASK_STACK_SIZE (RTEMS_MINIMUM_STACK_SIZE + 2 * EEPROM_SIZE) + +#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION + +#define CONFIGURE_INIT +#include <rtems/confdefs.h> diff -Nrua /home/c/development/rtems/rtems-src/testsuites/samples/i2c0/Makefile.am /home/c/development/rtems/rtems-s/testsuites/samples/i2c0/Makefile.am --- /home/c/development/rtems/rtems-src/testsuites/samples/i2c0/Makefile.am 1970-01-01 08:00:00.000000000 +0800 +++ /home/c/development/rtems/rtems-s/testsuites/samples/i2c0/Makefile.am 2017-01-13 00:11:30.923645327 +0800 @@ -0,0 +1,20 @@ + +rtems_tests_PROGRAMS = i2c0 +i2c0_SOURCES = init.c + +dist_rtems_tests_DATA = i2c0.scn +dist_rtems_tests_DATA += i2c0.doc + +include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg +include $(top_srcdir)/../automake/compile.am +include $(top_srcdir)/../automake/leaf.am + + +LINK_OBJS = $(i2c0_OBJECTS) +LINK_LIBS = $(i2c0_LDLIBS) + +i2c0(EXEEXT): $(i2c0_OBJECTS) $(i2c0_DEPENDENCIES) + @rm -f i2c0$(EXEEXT) + $(make-exe) + +include $(top_srcdir)/../automake/local.am diff -Nrua /home/c/development/rtems/rtems-src/testsuites/samples/i2c0/Makefile.in /home/c/development/rtems/rtems-s/testsuites/samples/i2c0/Makefile.in --- /home/c/development/rtems/rtems-src/testsuites/samples/i2c0/Makefile.in 1970-01-01 08:00:00.000000000 +0800 +++ /home/c/development/rtems/rtems-s/testsuites/samples/i2c0/Makefile.in 2017-01-13 12:41:11.382054811 +0800 @@ -0,0 +1,636 @@ +# Makefile.in generated by automake 1.12.6 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2012 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + + +VPATH = @srcdir@ +am__make_dryrun = \ + { \ + am__dry=no; \ + case $$MAKEFLAGS in \ + *\\[\ \ ]*) \ + echo 'am--echo: ; @echo "AM" OK' | $(MAKE) -f - 2>/dev/null \ + | grep '^AM OK$$' >/dev/null || am__dry=yes;; \ + *) \ + for am__flg in $$MAKEFLAGS; do \ + case $$am__flg in \ + *=*|--*) ;; \ + *n*) am__dry=yes; break;; \ + esac; \ + done;; \ + esac; \ + test $$am__dry = yes; \ + } +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +rtems_tests_PROGRAMS = i2c0$(EXEEXT) +DIST_COMMON = $(dist_rtems_tests_DATA) $(srcdir)/Makefile.am \ + $(srcdir)/Makefile.in $(top_srcdir)/../../depcomp \ + $(top_srcdir)/../automake/compile.am \ + $(top_srcdir)/../automake/leaf.am \ + $(top_srcdir)/../automake/local.am +subdir = i2c0 +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = \ + $(top_srcdir)/../aclocal/canonical-target-name.m4 \ + $(top_srcdir)/../aclocal/canonicalize-tools.m4 \ + $(top_srcdir)/../aclocal/check-cpuopts.m4 \ + $(top_srcdir)/../aclocal/check-custom-bsp.m4 \ + $(top_srcdir)/../aclocal/check-cxx.m4 \ + $(top_srcdir)/../aclocal/check-tool.m4 \ + $(top_srcdir)/../aclocal/enable-cxx.m4 \ + $(top_srcdir)/../aclocal/env-rtemsbsp.m4 \ + $(top_srcdir)/../aclocal/prog-cc.m4 \ + $(top_srcdir)/../aclocal/prog-cxx.m4 \ + $(top_srcdir)/../aclocal/project-root.m4 \ + $(top_srcdir)/../aclocal/rtems-top.m4 \ + $(top_srcdir)/../aclocal/version.m4 $(top_srcdir)/configure.ac +am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \ + $(ACLOCAL_M4) +mkinstalldirs = $(install_sh) -d +CONFIG_HEADER = $(top_builddir)/config.h +CONFIG_CLEAN_FILES = +CONFIG_CLEAN_VPATH_FILES = +am__installdirs = "$(DESTDIR)$(rtems_testsdir)" \ + "$(DESTDIR)$(rtems_testsdir)" +PROGRAMS = $(rtems_tests_PROGRAMS) +am_i2c0_OBJECTS = init.$(OBJEXT) +i2c0_OBJECTS = $(am_i2c0_OBJECTS) +i2c0_LDADD = $(LDADD) +DEFAULT_INCLUDES = -I.@am__isrc@ -I$(top_builddir) +depcomp = $(SHELL) $(top_srcdir)/../../depcomp +am__depfiles_maybe = depfiles +am__mv = mv -f +COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \ + $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) +CCLD = $(CC) +LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@ +SOURCES = $(i2c0_SOURCES) +DIST_SOURCES = $(i2c0_SOURCES) +am__can_run_installinfo = \ + case $$AM_UPDATE_INFO_DIR in \ + n|no|NO) false;; \ + *) (install-info --version) >/dev/null 2>&1;; \ + esac +am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; +am__vpath_adj = case $$p in \ + $(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \ + *) f=$$p;; \ + esac; +am__strip_dir = f=`echo $$p | sed -e 's|^.*/||'`; +am__install_max = 40 +am__nobase_strip_setup = \ + srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*|]/\\\\&/g'` +am__nobase_strip = \ + for p in $$list; do echo "$$p"; done | sed -e "s|$$srcdirstrip/||" +am__nobase_list = $(am__nobase_strip_setup); \ + for p in $$list; do echo "$$p $$p"; done | \ + sed "s| $$srcdirstrip/| |;"' / .*\//!s/ .*/ ./; s,\( .*\)/[^/]*$$,\1,' | \ + $(AWK) 'BEGIN { files["."] = "" } { files[$$2] = files[$$2] " " $$1; \ + if (++n[$$2] == $(am__install_max)) \ + { print $$2, files[$$2]; n[$$2] = 0; files[$$2] = "" } } \ + END { for (dir in files) print dir, files[dir] }' +am__base_list = \ + sed '$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;s/\n/ /g' | \ + sed '$$!N;$$!N;$$!N;$$!N;s/\n/ /g' +am__uninstall_files_from_dir = { \ + test -z "$$files" \ + || { test ! -d "$$dir" && test ! -f "$$dir" && test ! -r "$$dir"; } \ + || { echo " ( cd '$$dir' && rm -f" $$files ")"; \ + $(am__cd) "$$dir" && rm -f $$files; }; \ + } +DATA = $(dist_rtems_tests_DATA) +ETAGS = etags +CTAGS = ctags +DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST) +ACLOCAL = @ACLOCAL@ +AMTAR = @AMTAR@ +AR = @AR@ +AS = @AS@ +AUTOCONF = @AUTOCONF@ +AUTOHEADER = @AUTOHEADER@ +AUTOMAKE = @AUTOMAKE@ +AWK = @AWK@ +BIN2C = @BIN2C@ +CC = @CC@ $(GCCSPECS) +CCDEPMODE = @CCDEPMODE@ +CFLAGS = @CFLAGS@ +CPP = @CPP@ $(GCCSPECS) +CPPFLAGS = @CPPFLAGS@ +CPUKIT_ROOT = @CPUKIT_ROOT@ +CXX = @CXX@ $(GCCSPECS) +CXXCPP = @CXXCPP@ +CXXDEPMODE = @CXXDEPMODE@ +CXXFLAGS = @CXXFLAGS@ +CYGPATH_W = @CYGPATH_W@ +DEFS = @DEFS@ +DEPDIR = @DEPDIR@ +ECHO_C = @ECHO_C@ +ECHO_N = @ECHO_N@ +ECHO_T = @ECHO_T@ +EGREP = @EGREP@ +ENDIF = @ENDIF@ +EXEEXT = @EXEEXT@ +GCCSPECS = @GCCSPECS@ +GREP = @GREP@ +HAS_CPLUSPLUS = @HAS_CPLUSPLUS@ +INSTALL = @INSTALL@ +INSTALL_DATA = @INSTALL_DATA@ +INSTALL_PROGRAM = @INSTALL_PROGRAM@ +INSTALL_SCRIPT = @INSTALL_SCRIPT@ +INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@ +LD = @LD@ +LDFLAGS = @LDFLAGS@ +LIBOBJS = @LIBOBJS@ +LIBS = @LIBS@ +LTLIBOBJS = @LTLIBOBJS@ +MAINT = @MAINT@ +MAKE = @MAKE@ +MAKEINFO = @MAKEINFO@ +MKDIR_P = @MKDIR_P@ +NM = @NM@ +OBJCOPY = @OBJCOPY@ +OBJEXT = @OBJEXT@ +PACKAGE = @PACKAGE@ +PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@ +PACKAGE_NAME = @PACKAGE_NAME@ +PACKAGE_STRING = @PACKAGE_STRING@ +PACKAGE_TARNAME = @PACKAGE_TARNAME@ +PACKAGE_URL = @PACKAGE_URL@ +PACKAGE_VERSION = @PACKAGE_VERSION@ +PACKHEX = @PACKHEX@ +PATH_SEPARATOR = @PATH_SEPARATOR@ +PROJECT_INCLUDE = @PROJECT_INCLUDE@ +PROJECT_LIB = @PROJECT_LIB@ +PROJECT_RELEASE = @PROJECT_RELEASE@ +PROJECT_ROOT = @PROJECT_ROOT@ +PROJECT_TOPdir = @PROJECT_TOPdir@ +RANLIB = @RANLIB@ +RTEMS_BSP = @RTEMS_BSP@ +RTEMS_BSP_FAMILY = @RTEMS_BSP_FAMILY@ +RTEMS_CPU = @RTEMS_CPU@ +RTEMS_ROOT = @RTEMS_ROOT@ +RTEMS_TOPdir = @RTEMS_TOPdir@ +SET_MAKE = @SET_MAKE@ +SHELL = @SHELL@ +SIZE = @SIZE@ +STRIP = @STRIP@ +VERSION = @VERSION@ +abs_builddir = @abs_builddir@ +abs_srcdir = @abs_srcdir@ +abs_top_builddir = @abs_top_builddir@ +abs_top_srcdir = @abs_top_srcdir@ +ac_ct_CC = @ac_ct_CC@ +ac_ct_CXX = @ac_ct_CXX@ +am__include = @am__include@ +am__leading_dot = @am__leading_dot@ +am__quote = @am__quote@ +am__tar = @am__tar@ +am__untar = @am__untar@ +bindir = @bindir@ +build = @build@ +build_alias = @build_alias@ +build_cpu = @build_cpu@ +build_os = @build_os@ +build_vendor = @build_vendor@ +builddir = @builddir@ +datadir = @datadir@ +datarootdir = @datarootdir@ +docdir = @docdir@ +dvidir = @dvidir@ +exec_prefix = @exec_prefix@ +host = @host@ +host_alias = @host_alias@ +host_cpu = @host_cpu@ +host_os = @host_os@ +host_vendor = @host_vendor@ +htmldir = @htmldir@ +includedir = @includedir@ +infodir = @infodir@ +install_sh = @install_sh@ +libdir = @libdir@ +libexecdir = @libexecdir@ +localedir = @localedir@ +localstatedir = @localstatedir@ +mandir = @mandir@ +mkdir_p = @mkdir_p@ +oldincludedir = @oldincludedir@ +pdfdir = @pdfdir@ +prefix = @prefix@ +program_transform_name = @program_transform_name@ +psdir = @psdir@ +rtems_testsdir = @rtems_testsdir@ +sbindir = @sbindir@ +sharedstatedir = @sharedstatedir@ +srcdir = @srcdir@ +sysconfdir = @sysconfdir@ +target_alias = @target_alias@ +top_build_prefix = @top_build_prefix@ +top_builddir = @top_builddir@ +top_srcdir = @top_srcdir@ +i2c0_SOURCES = init.c +dist_rtems_tests_DATA = i2c0.scn i2c0.doc +AM_CPPFLAGS = +AM_CFLAGS = +AM_CXXFLAGS = +CLEANFILES = *.num *.nxe *.elf *.srec* *.bin *.bt *.ralf +CXXLINK_APP = $(CXXLINK) $(LDLIBS) $(LINK_OBJS) $(LINK_LIBS) +LINK_APP = $(LINK) $(LDLIBS) $(LINK_OBJS) $(LINK_LIBS) +LINK_OBJS = $(i2c0_OBJECTS) +LINK_LIBS = $(i2c0_LDLIBS) +PROJECT_TOOLS = $(PROJECT_RELEASE)/build-tools +all: all-am + +.SUFFIXES: +.SUFFIXES: .c .o .obj +$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am $(top_srcdir)/../automake/compile.am $(top_srcdir)/../automake/leaf.am $(top_srcdir)/../automake/local.am $(am__configure_deps) + @for dep in $?; do \ + case '$(am__configure_deps)' in \ + *$$dep*) \ + ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \ + && { if test -f $@; then exit 0; else break; fi; }; \ + exit 1;; \ + esac; \ + done; \ + echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign i2c0/Makefile'; \ + $(am__cd) $(top_srcdir) && \ + $(AUTOMAKE) --foreign i2c0/Makefile +.PRECIOUS: Makefile +Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status + @case '$?' in \ + *config.status*) \ + cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \ + *) \ + echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \ + cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \ + esac; +$(top_srcdir)/../automake/compile.am $(top_srcdir)/../automake/leaf.am $(top_srcdir)/../automake/local.am: + +$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES) + cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh + +$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps) + cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh +$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps) + cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh +$(am__aclocal_m4_deps): +install-rtems_testsPROGRAMS: $(rtems_tests_PROGRAMS) + @$(NORMAL_INSTALL) + @list='$(rtems_tests_PROGRAMS)'; test -n "$(rtems_testsdir)" || list=; \ + if test -n "$$list"; then \ + echo " $(MKDIR_P) '$(DESTDIR)$(rtems_testsdir)'"; \ + $(MKDIR_P) "$(DESTDIR)$(rtems_testsdir)" || exit 1; \ + fi; \ + for p in $$list; do echo "$$p $$p"; done | \ + sed 's/$(EXEEXT)$$//' | \ + while read p p1; do if test -f $$p; \ + then echo "$$p"; echo "$$p"; else :; fi; \ + done | \ + sed -e 'p;s,.*/,,;n;h' -e 's|.*|.|' \ + -e 'p;x;s,.*/,,;s/$(EXEEXT)$$//;$(transform);s/$$/$(EXEEXT)/' | \ + sed 'N;N;N;s,\n, ,g' | \ + $(AWK) 'BEGIN { files["."] = ""; dirs["."] = 1 } \ + { d=$$3; if (dirs[d] != 1) { print "d", d; dirs[d] = 1 } \ + if ($$2 == $$4) files[d] = files[d] " " $$1; \ + else { print "f", $$3 "/" $$4, $$1; } } \ + END { for (d in files) print "f", d, files[d] }' | \ + while read type dir files; do \ + if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \ + test -z "$$files" || { \ + echo " $(INSTALL_PROGRAM_ENV) $(INSTALL_PROGRAM) $$files '$(DESTDIR)$(rtems_testsdir)$$dir'"; \ + $(INSTALL_PROGRAM_ENV) $(INSTALL_PROGRAM) $$files "$(DESTDIR)$(rtems_testsdir)$$dir" || exit $$?; \ + } \ + ; done + +uninstall-rtems_testsPROGRAMS: + @$(NORMAL_UNINSTALL) + @list='$(rtems_tests_PROGRAMS)'; test -n "$(rtems_testsdir)" || list=; \ + files=`for p in $$list; do echo "$$p"; done | \ + sed -e 'h;s,^.*/,,;s/$(EXEEXT)$$//;$(transform)' \ + -e 's/$$/$(EXEEXT)/' `; \ + test -n "$$list" || exit 0; \ + echo " ( cd '$(DESTDIR)$(rtems_testsdir)' && rm -f" $$files ")"; \ + cd "$(DESTDIR)$(rtems_testsdir)" && rm -f $$files + +clean-rtems_testsPROGRAMS: + -test -z "$(rtems_tests_PROGRAMS)" || rm -f $(rtems_tests_PROGRAMS) +i2c0$(EXEEXT): $(i2c0_OBJECTS) $(i2c0_DEPENDENCIES) $(EXTRA_i2c0_DEPENDENCIES) + @rm -f i2c0$(EXEEXT) + $(LINK) $(i2c0_OBJECTS) $(i2c0_LDADD) $(LIBS) + +mostlyclean-compile: + -rm -f *.$(OBJEXT) + +distclean-compile: + -rm -f *.tab.c + +@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/init.Po@am__quote@ + +.c.o: +@am__fastdepCC_TRUE@ $(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $< +@am__fastdepCC_TRUE@ $(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po +@AMDEP_TRUE@@am__fastdepCC_FALSE@ source='$<' object='$@' libtool=no @AMDEPBACKSLASH@ +@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@ +@am__fastdepCC_FALSE@ $(COMPILE) -c $< + +.c.obj: +@am__fastdepCC_TRUE@ $(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ `$(CYGPATH_W) '$<'` +@am__fastdepCC_TRUE@ $(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po +@AMDEP_TRUE@@am__fastdepCC_FALSE@ source='$<' object='$@' libtool=no @AMDEPBACKSLASH@ +@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@ +@am__fastdepCC_FALSE@ $(COMPILE) -c `$(CYGPATH_W) '$<'` +install-dist_rtems_testsDATA: $(dist_rtems_tests_DATA) + @$(NORMAL_INSTALL) + @list='$(dist_rtems_tests_DATA)'; test -n "$(rtems_testsdir)" || list=; \ + if test -n "$$list"; then \ + echo " $(MKDIR_P) '$(DESTDIR)$(rtems_testsdir)'"; \ + $(MKDIR_P) "$(DESTDIR)$(rtems_testsdir)" || exit 1; \ + fi; \ + for p in $$list; do \ + if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \ + echo "$$d$$p"; \ + done | $(am__base_list) | \ + while read files; do \ + echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(rtems_testsdir)'"; \ + $(INSTALL_DATA) $$files "$(DESTDIR)$(rtems_testsdir)" || exit $$?; \ + done + +uninstall-dist_rtems_testsDATA: + @$(NORMAL_UNINSTALL) + @list='$(dist_rtems_tests_DATA)'; test -n "$(rtems_testsdir)" || list=; \ + files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \ + dir='$(DESTDIR)$(rtems_testsdir)'; $(am__uninstall_files_from_dir) + +ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES) + list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \ + unique=`for i in $$list; do \ + if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \ + done | \ + $(AWK) '{ files[$$0] = 1; nonempty = 1; } \ + END { if (nonempty) { for (i in files) print i; }; }'`; \ + mkid -fID $$unique +tags: TAGS + +TAGS: $(HEADERS) $(SOURCES) $(TAGS_DEPENDENCIES) \ + $(TAGS_FILES) $(LISP) + set x; \ + here=`pwd`; \ + list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \ + unique=`for i in $$list; do \ + if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \ + done | \ + $(AWK) '{ files[$$0] = 1; nonempty = 1; } \ + END { if (nonempty) { for (i in files) print i; }; }'`; \ + shift; \ + if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \ + test -n "$$unique" || unique=$$empty_fix; \ + if test $$# -gt 0; then \ + $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \ + "$$@" $$unique; \ + else \ + $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \ + $$unique; \ + fi; \ + fi +ctags: CTAGS +CTAGS: $(HEADERS) $(SOURCES) $(TAGS_DEPENDENCIES) \ + $(TAGS_FILES) $(LISP) + list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \ + unique=`for i in $$list; do \ + if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \ + done | \ + $(AWK) '{ files[$$0] = 1; nonempty = 1; } \ + END { if (nonempty) { for (i in files) print i; }; }'`; \ + test -z "$(CTAGS_ARGS)$$unique" \ + || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \ + $$unique + +GTAGS: + here=`$(am__cd) $(top_builddir) && pwd` \ + && $(am__cd) $(top_srcdir) \ + && gtags -i $(GTAGS_ARGS) "$$here" + +cscopelist: $(HEADERS) $(SOURCES) $(LISP) + list='$(SOURCES) $(HEADERS) $(LISP)'; \ + case "$(srcdir)" in \ + [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \ + *) sdir=$(subdir)/$(srcdir) ;; \ + esac; \ + for i in $$list; do \ + if test -f "$$i"; then \ + echo "$(subdir)/$$i"; \ + else \ + echo "$$sdir/$$i"; \ + fi; \ + done >> $(top_builddir)/cscope.files + +distclean-tags: + -rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags + +distdir: $(DISTFILES) + @srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \ + topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \ + list='$(DISTFILES)'; \ + dist_files=`for file in $$list; do echo $$file; done | \ + sed -e "s|^$$srcdirstrip/||;t" \ + -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \ + case $$dist_files in \ + */*) $(MKDIR_P) `echo "$$dist_files" | \ + sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \ + sort -u` ;; \ + esac; \ + for file in $$dist_files; do \ + if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \ + if test -d $$d/$$file; then \ + dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \ + if test -d "$(distdir)/$$file"; then \ + find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \ + fi; \ + if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \ + cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \ + find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \ + fi; \ + cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \ + else \ + test -f "$(distdir)/$$file" \ + || cp -p $$d/$$file "$(distdir)/$$file" \ + || exit 1; \ + fi; \ + done +check-am: all-am +check: check-am +all-am: Makefile $(PROGRAMS) $(DATA) +installdirs: + for dir in "$(DESTDIR)$(rtems_testsdir)" "$(DESTDIR)$(rtems_testsdir)"; do \ + test -z "$$dir" || $(MKDIR_P) "$$dir"; \ + done +install: install-am +install-exec: install-exec-am +install-data: install-data-am +uninstall: uninstall-am + +install-am: all-am + @$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am + +installcheck: installcheck-am +install-strip: + if test -z '$(STRIP)'; then \ + $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \ + install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \ + install; \ + else \ + $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \ + install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \ + "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \ + fi +mostlyclean-generic: + +clean-generic: + -test -z "$(CLEANFILES)" || rm -f $(CLEANFILES) + +distclean-generic: + -test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES) + -test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES) + +maintainer-clean-generic: + @echo "This command is intended for maintainers to use" + @echo "it deletes files that may require special tools to rebuild." +clean: clean-am + +clean-am: clean-generic clean-rtems_testsPROGRAMS mostlyclean-am + +distclean: distclean-am + -rm -rf ./$(DEPDIR) + -rm -f Makefile +distclean-am: clean-am distclean-compile distclean-generic \ + distclean-tags + +dvi: dvi-am + +dvi-am: + +html: html-am + +html-am: + +info: info-am + +info-am: + +install-data-am: install-dist_rtems_testsDATA \ + install-rtems_testsPROGRAMS + +install-dvi: install-dvi-am + +install-dvi-am: + +install-exec-am: + +install-html: install-html-am + +install-html-am: + +install-info: install-info-am + +install-info-am: + +install-man: + +install-pdf: install-pdf-am + +install-pdf-am: + +install-ps: install-ps-am + +install-ps-am: + +installcheck-am: + +maintainer-clean: maintainer-clean-am + -rm -rf ./$(DEPDIR) + -rm -f Makefile +maintainer-clean-am: distclean-am maintainer-clean-generic + +mostlyclean: mostlyclean-am + +mostlyclean-am: mostlyclean-compile mostlyclean-generic + +pdf: pdf-am + +pdf-am: + +ps: ps-am + +ps-am: + +uninstall-am: uninstall-dist_rtems_testsDATA \ + uninstall-rtems_testsPROGRAMS + +.MAKE: install-am install-strip + +.PHONY: CTAGS GTAGS all all-am check check-am clean clean-generic \ + clean-rtems_testsPROGRAMS cscopelist ctags distclean \ + distclean-compile distclean-generic distclean-tags distdir dvi \ + dvi-am html html-am info info-am install install-am \ + install-data install-data-am install-dist_rtems_testsDATA \ + install-dvi install-dvi-am install-exec install-exec-am \ + install-html install-html-am install-info install-info-am \ + install-man install-pdf install-pdf-am install-ps \ + install-ps-am install-rtems_testsPROGRAMS install-strip \ + installcheck installcheck-am installdirs maintainer-clean \ + maintainer-clean-generic mostlyclean mostlyclean-compile \ + mostlyclean-generic pdf pdf-am ps ps-am tags uninstall \ + uninstall-am uninstall-dist_rtems_testsDATA \ + uninstall-rtems_testsPROGRAMS + + +include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg +include $(RTEMS_ROOT)/make/leaf.cfg +ifndef make-cxx-exe +define make-cxx-exe + $(CXXLINK_APP) +endef +@ENDIF@ +ifndef make-exe +define make-exe + $(LINK_APP) +endef +@ENDIF@ + +i2c0(EXEEXT): $(i2c0_OBJECTS) $(i2c0_DEPENDENCIES) + @rm -f i2c0$(EXEEXT) + $(make-exe) +preinstall: +.PHONY: preinstall + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT:
diff -Nrua /home/c/development/rtems/rtems-src/c/src/lib/libbsp/arm/beagle/i2c/bbb-i2c.c /home/c/development/rtems/rtems-s/c/src/lib/libbsp/arm/beagle/i2c/bbb-i2c.c --- /home/c/development/rtems/rtems-src/c/src/lib/libbsp/arm/beagle/i2c/bbb-i2c.c 1970-01-01 08:00:00.000000000 +0800 +++ /home/c/development/rtems/rtems-s/c/src/lib/libbsp/arm/beagle/i2c/bbb-i2c.c 2017-02-21 16:54:27.525955488 +0800 @@ -0,0 +1,1402 @@ +/** + * @file + * + * @ingroup arm_beagle + * + * @brief BeagleBoard I2C bus initialization and API Support. + */ + +/* + * Copyright (c) 2016 Punit Vara <punitvara at gmail.com> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +#include <stdio.h> +#include <bsp/i2c.h> +#include <libcpu/am335x.h> +#include <rtems/irq-extension.h> +#include <bsp/bbb-gpio.h> +#include <rtems/score/assert.h> + +#define u16 unsigned int + +static int am335x_i2c_set_clock(i2c_bus *base, unsigned long clock); +static void omap24_i2c_init(i2c_bus *base); +static void flush_fifo(i2c_bus *base); +static int wait_for_bb(i2c_bus *base); +static int omap24_i2c_probe(i2c_bus *base); +static u16 wait_for_event(i2c_bus *base); +static int am335x_i2c_read(i2c_bus *base, unsigned char chip, uint addr, int alen, unsigned char *buffer, + int len); +static int read_eeprom(i2c_bus *base,struct am335x_baseboard_id *header); +static int am335x_i2c_write(i2c_bus *base, unsigned char chip, uint addr,int alen, unsigned char *buffer, + int len); +/* +static bool am335x_i2c_pinmux(bbb_i2c_bus *bus) +{ + bool status =true; + // We will check i2c_bus_id in am335x_i2c_bus_register + // Apart from mode and pull_up register what about SCREWCTRL & RXACTIVE ?? + if (bus->i2c_bus_id == I2C1) { + REG(AM335X_PADCONF_BASE + AM335X_CONF_SPI0_CS0) = (BBB_MUXMODE(MODE2) | BBB_PU_EN); + REG(AM335X_PADCONF_BASE + AM335X_CONF_SPI0_D1) = (BBB_MUXMODE(MODE2) | BBB_PU_EN); + REG(AM335X_PADCONF_BASE + AM335X_CONF_UART1_TXD) = (BBB_MUXMODE(MODE3) | BBB_PU_EN); + REG(AM335X_PADCONF_BASE + AM335X_CONF_UART1_RXD) = (BBB_MUXMODE(MODE3) | BBB_PU_EN); + } else if (bus->i2c_bus_id == I2C2) { + REG(AM335X_PADCONF_BASE + AM335X_CONF_UART1_RTSN) = (BBB_MUXMODE(MODE3) | BBB_PU_EN); + REG(AM335X_PADCONF_BASE + AM335X_CONF_UART1_CTSN) = (BBB_MUXMODE(MODE3) | BBB_PU_EN); + REG(AM335X_PADCONF_BASE + AM335X_CONF_SPI0_D0) = (BBB_MUXMODE(MODE3) | BBB_PU_EN); + REG(AM335X_PADCONF_BASE + AM335X_CONF_SPI0_SCLK) = (BBB_MUXMODE(MODE3) | BBB_PU_EN); + } else { + status = false; + } + return status; +} +*/ + +/* ref. Table 21-4 I2C Clock Signals */ +/* + For I2C1/2 + Interface clock - 100MHz - CORE_LKOUTM4 / 2 - pd_per_l4ls_gclk + Functional clock - 48MHz - PER_CLKOUTM2 / 4 - pd_per_ic2_fclk +*/ + +/* +static void am335x_i2c1_i2c2_module_clk_config(bbb_i2c_bus *bus) +{ +*/ +/*0x2 = SW_WKUP : SW_WKUP: Start a software forced wake-up +transition on the domain. */ +/* + REG(AM335X_CM_PER_ADDR + AM335X_CM_PER_L4LS_CLKSTCTRL) |= + AM335X_CM_PER_L4LS_CLKSTCTRL_CLKTRCTRL_SW_WKUP; + while((REG(AM335X_CM_PER_ADDR + AM335X_CM_PER_L4LS_CLKSTCTRL) & + AM335X_CM_PER_L4LS_CLKSTCTRL_CLKTRCTRL) != + AM335X_CM_PER_L4LS_CLKSTCTRL_CLKTRCTRL_SW_WKUP); +*/ + +/* 0x2 = ENABLE : Module is explicitly enabled. Interface clock (if not +used for functions) may be gated according to the clock domain +state. Functional clocks are guarantied to stay present. As long as in +this configuration, power domain sleep transition cannot happen.*/ + /* REG(AM335X_CM_PER_ADDR + AM335X_CM_PER_L4LS_CLKCTRL) |= + AM335X_CM_PER_L4LS_CLKCTRL_MODULEMODE_ENABLE; + while((REG(AM335X_CM_PER_ADDR + AM335X_CM_PER_L4LS_CLKCTRL) & + AM335X_CM_PER_L4LS_CLKCTRL_MODULEMODE) != AM335X_CM_PER_L4LS_CLKCTRL_MODULEMODE_ENABLE); +*/ +/*0x2 = ENABLE : Module is explicitly enabled. Interface clock (if not +used for functions) may be gated according to the clock domain +state. Functional clocks are guarantied to stay present. As long as in +this configuration, power domain sleep transition cannot happen.*/ +/* + if (bus->i2c_bus_id == I2C1) { + REG(AM335X_CM_PER_ADDR + AM335X_CM_PER_I2C1_CLKCTRL) |= + AM335X_CM_PER_I2C1_CLKCTRL_MODULEMODE_ENABLE; + while(REG((AM335X_CM_PER_ADDR + AM335X_CM_PER_I2C1_CLKCTRL) & + AM335X_CM_PER_I2C1_CLKCTRL_MODULEMODE) != AM335X_CM_PER_I2C1_CLKCTRL_MODULEMODE_ENABLE); + } else if (bus->i2c_bus_id == I2C2) { + REG(AM335X_CM_PER_ADDR + AM335X_CM_PER_I2C2_CLKCTRL) |= + AM335X_CM_PER_I2C2_CLKCTRL_MODULEMODE_ENABLE; + while(REG((AM335X_CM_PER_ADDR + AM335X_CM_PER_I2C2_CLKCTRL) & + AM335X_CM_PER_I2C2_CLKCTRL_MODULEMODE) != AM335X_CM_PER_I2C2_CLKCTRL_MODULEMODE_ENABLE); + while(!(REG(AM335X_CM_PER_ADDR + AM335X_CM_PER_L4LS_CLKSTCTRL) & + (AM335X_CM_PER_L4LS_CLKSTCTRL_CLKACTIVITY_L4LS_GCLK | + AM335X_CM_PER_L4LS_CLKSTCTRL_CLKACTIVITY_I2C_FCLK))); + } +} +*/ + +static void am335x_i2c0_pinmux(bbb_i2c_bus *bus) +{ + printf("0x44e10000 + AM335X_CONF_I2C0_SDA:%x\n",0x44e10000 + AM335X_CONF_I2C0_SDA); + printf("bus->regs:%x\n", bus->regs); + + REG(0x44e10000 + AM335X_CONF_I2C0_SDA) = + (BBB_RXACTIVE | BBB_SLEWCTRL | BBB_PU_EN); + + REG(0x44e10000 + AM335X_CONF_I2C0_SCL) = + (BBB_RXACTIVE | BBB_SLEWCTRL | BBB_PU_EN); +} + +static void I2C0ModuleClkConfig(void) +{ + /* Configuring L3 Interface Clocks. */ + + /* Writing to MODULEMODE field of CM_PER_L3_CLKCTRL register. */ + REG(AM335X_CM_PER_ADDR + CM_PER_L3_CLKCTRL) |= + CM_PER_L3_CLKCTRL_MODULEMODE_ENABLE; + + /* Waiting for MODULEMODE field to reflect the written value. */ + while(CM_PER_L3_CLKCTRL_MODULEMODE_ENABLE != + (REG(AM335X_CM_PER_ADDR + CM_PER_L3_CLKCTRL) & + CM_PER_L3_CLKCTRL_MODULEMODE)); + + /* Writing to MODULEMODE field of CM_PER_L3_INSTR_CLKCTRL register. */ + REG(AM335X_CM_PER_ADDR + CM_PER_L3_INSTR_CLKCTRL) |= + CM_PER_L3_INSTR_CLKCTRL_MODULEMODE_ENABLE; + + /* Waiting for MODULEMODE field to reflect the written value. */ + while(CM_PER_L3_INSTR_CLKCTRL_MODULEMODE_ENABLE != + (REG(AM335X_CM_PER_ADDR + CM_PER_L3_INSTR_CLKCTRL) & + CM_PER_L3_INSTR_CLKCTRL_MODULEMODE)); + + /* Writing to CLKTRCTRL field of CM_PER_L3_CLKSTCTRL register. */ + REG(AM335X_CM_PER_ADDR + CM_PER_L3_CLKSTCTRL) |= + CM_PER_L3_CLKSTCTRL_CLKTRCTRL_SW_WKUP; + + /* Waiting for CLKTRCTRL field to reflect the written value. */ + while(CM_PER_L3_CLKSTCTRL_CLKTRCTRL_SW_WKUP != + (REG(AM335X_CM_PER_ADDR + CM_PER_L3_CLKSTCTRL) & + CM_PER_L3_CLKSTCTRL_CLKTRCTRL)); + + /* Writing to CLKTRCTRL field of CM_PER_OCPWP_L3_CLKSTCTRL register. */ + REG(AM335X_CM_PER_ADDR + CM_PER_OCPWP_L3_CLKSTCTRL) |= + CM_PER_OCPWP_L3_CLKSTCTRL_CLKTRCTRL_SW_WKUP; + + /*Waiting for CLKTRCTRL field to reflect the written value. */ + while(CM_PER_OCPWP_L3_CLKSTCTRL_CLKTRCTRL_SW_WKUP != + (REG(AM335X_CM_PER_ADDR + CM_PER_OCPWP_L3_CLKSTCTRL) & + CM_PER_OCPWP_L3_CLKSTCTRL_CLKTRCTRL)); + + /* Writing to CLKTRCTRL field of CM_PER_L3S_CLKSTCTRL register. */ + REG(AM335X_CM_PER_ADDR + CM_PER_L3S_CLKSTCTRL) |= + CM_PER_L3S_CLKSTCTRL_CLKTRCTRL_SW_WKUP; + + /*Waiting for CLKTRCTRL field to reflect the written value. */ + while(CM_PER_L3S_CLKSTCTRL_CLKTRCTRL_SW_WKUP != + (REG(AM335X_CM_PER_ADDR + CM_PER_L3S_CLKSTCTRL) & + CM_PER_L3S_CLKSTCTRL_CLKTRCTRL)); + + /* Checking fields for necessary values. */ + + /* Waiting for IDLEST field in CM_PER_L3_CLKCTRL register to be set to 0x0. */ + while((CM_PER_L3_CLKCTRL_IDLEST_FUNC << CM_PER_L3_CLKCTRL_IDLEST_SHIFT)!= + (REG(AM335X_CM_PER_ADDR + CM_PER_L3_CLKCTRL) & + CM_PER_L3_CLKCTRL_IDLEST)); + + /* + ** Waiting for IDLEST field in CM_PER_L3_INSTR_CLKCTRL register to attain the + ** desired value. + */ + while((CM_PER_L3_INSTR_CLKCTRL_IDLEST_FUNC << + CM_PER_L3_INSTR_CLKCTRL_IDLEST_SHIFT)!= + (REG(AM335X_CM_PER_ADDR + CM_PER_L3_INSTR_CLKCTRL) & + CM_PER_L3_INSTR_CLKCTRL_IDLEST)); + + /* + ** Waiting for CLKACTIVITY_L3_GCLK field in CM_PER_L3_CLKSTCTRL register to + ** attain the desired value. + */ + while(CM_PER_L3_CLKSTCTRL_CLKACTIVITY_L3_GCLK != + (REG(AM335X_CM_PER_ADDR + CM_PER_L3_CLKSTCTRL) & + CM_PER_L3_CLKSTCTRL_CLKACTIVITY_L3_GCLK)); + + /* + ** Waiting for CLKACTIVITY_OCPWP_L3_GCLK field in CM_PER_OCPWP_L3_CLKSTCTRL + ** register to attain the desired value. + */ + while(CM_PER_OCPWP_L3_CLKSTCTRL_CLKACTIVITY_OCPWP_L3_GCLK != + (REG(AM335X_CM_PER_ADDR + CM_PER_OCPWP_L3_CLKSTCTRL) & + CM_PER_OCPWP_L3_CLKSTCTRL_CLKACTIVITY_OCPWP_L3_GCLK)); + + /* + ** Waiting for CLKACTIVITY_L3S_GCLK field in CM_PER_L3S_CLKSTCTRL register + ** to attain the desired value. + */ + while(CM_PER_L3S_CLKSTCTRL_CLKACTIVITY_L3S_GCLK != + (REG(AM335X_CM_PER_ADDR + CM_PER_L3S_CLKSTCTRL) & + CM_PER_L3S_CLKSTCTRL_CLKACTIVITY_L3S_GCLK)); + + + /* Configuring registers related to Wake-Up region. */ + + /* Writing to MODULEMODE field of CM_WKUP_CONTROL_CLKCTRL register. */ + REG(SOC_CM_WKUP_REGS + CM_WKUP_CONTROL_CLKCTRL) |= + CM_WKUP_CONTROL_CLKCTRL_MODULEMODE_ENABLE; + + /* Waiting for MODULEMODE field to reflect the written value. */ + while(CM_WKUP_CONTROL_CLKCTRL_MODULEMODE_ENABLE != + (REG(SOC_CM_WKUP_REGS + CM_WKUP_CONTROL_CLKCTRL) & + CM_WKUP_CONTROL_CLKCTRL_MODULEMODE)); + + /* Writing to CLKTRCTRL field of CM_PER_L3S_CLKSTCTRL register. */ + REG(SOC_CM_WKUP_REGS + CM_WKUP_CLKSTCTRL) |= + CM_WKUP_CLKSTCTRL_CLKTRCTRL_SW_WKUP; + + /*Waiting for CLKTRCTRL field to reflect the written value. */ + while(CM_WKUP_CLKSTCTRL_CLKTRCTRL_SW_WKUP != + (REG(SOC_CM_WKUP_REGS + CM_WKUP_CLKSTCTRL) & + CM_WKUP_CLKSTCTRL_CLKTRCTRL)); + + /* Writing to CLKTRCTRL field of CM_L3_AON_CLKSTCTRL register. */ + REG(SOC_CM_WKUP_REGS + CM_WKUP_CM_L3_AON_CLKSTCTRL) |= + CM_WKUP_CM_L3_AON_CLKSTCTRL_CLKTRCTRL_SW_WKUP; + + /*Waiting for CLKTRCTRL field to reflect the written value. */ + while(CM_WKUP_CM_L3_AON_CLKSTCTRL_CLKTRCTRL_SW_WKUP != + (REG(SOC_CM_WKUP_REGS + CM_WKUP_CM_L3_AON_CLKSTCTRL) & + CM_WKUP_CM_L3_AON_CLKSTCTRL_CLKTRCTRL)); + + /* Writing to MODULEMODE field of CM_WKUP_I2C0_CLKCTRL register. */ + REG(SOC_CM_WKUP_REGS + CM_WKUP_I2C0_CLKCTRL) |= + CM_WKUP_I2C0_CLKCTRL_MODULEMODE_ENABLE; + + /* Waiting for MODULEMODE field to reflect the written value. */ + while(CM_WKUP_I2C0_CLKCTRL_MODULEMODE_ENABLE != + (REG(SOC_CM_WKUP_REGS + CM_WKUP_I2C0_CLKCTRL) & + CM_WKUP_I2C0_CLKCTRL_MODULEMODE)); + + /* Verifying if the other bits are set to required settings. */ + + /* + ** Waiting for IDLEST field in CM_WKUP_CONTROL_CLKCTRL register to attain + ** desired value. + */ + while((CM_WKUP_CONTROL_CLKCTRL_IDLEST_FUNC << + CM_WKUP_CONTROL_CLKCTRL_IDLEST_SHIFT) != + (REG(SOC_CM_WKUP_REGS + CM_WKUP_CONTROL_CLKCTRL) & + CM_WKUP_CONTROL_CLKCTRL_IDLEST)); + + /* + ** Waiting for CLKACTIVITY_L3_AON_GCLK field in CM_L3_AON_CLKSTCTRL + ** register to attain desired value. + */ + while(CM_WKUP_CM_L3_AON_CLKSTCTRL_CLKACTIVITY_L3_AON_GCLK != + (REG(SOC_CM_WKUP_REGS + CM_WKUP_CM_L3_AON_CLKSTCTRL) & + CM_WKUP_CM_L3_AON_CLKSTCTRL_CLKACTIVITY_L3_AON_GCLK)); + + /* + ** Waiting for IDLEST field in CM_WKUP_L4WKUP_CLKCTRL register to attain + ** desired value. + */ + while((CM_WKUP_L4WKUP_CLKCTRL_IDLEST_FUNC << + CM_WKUP_L4WKUP_CLKCTRL_IDLEST_SHIFT) != + (REG(SOC_CM_WKUP_REGS + CM_WKUP_L4WKUP_CLKCTRL) & + CM_WKUP_L4WKUP_CLKCTRL_IDLEST)); + + /* + ** Waiting for CLKACTIVITY_L4_WKUP_GCLK field in CM_WKUP_CLKSTCTRL register + ** to attain desired value. + */ + while(CM_WKUP_CLKSTCTRL_CLKACTIVITY_L4_WKUP_GCLK != + (REG(SOC_CM_WKUP_REGS + CM_WKUP_CLKSTCTRL) & + CM_WKUP_CLKSTCTRL_CLKACTIVITY_L4_WKUP_GCLK)); + + /* + ** Waiting for CLKACTIVITY_L4_WKUP_AON_GCLK field in CM_L4_WKUP_AON_CLKSTCTRL + ** register to attain desired value. + */ + while(CM_WKUP_CM_L4_WKUP_AON_CLKSTCTRL_CLKACTIVITY_L4_WKUP_AON_GCLK != + (REG(SOC_CM_WKUP_REGS + CM_WKUP_CM_L4_WKUP_AON_CLKSTCTRL) & + CM_WKUP_CM_L4_WKUP_AON_CLKSTCTRL_CLKACTIVITY_L4_WKUP_AON_GCLK)); + + /* + ** Waiting for CLKACTIVITY_I2C0_GFCLK field in CM_WKUP_CLKSTCTRL + ** register to attain desired value. + */ + while(CM_WKUP_CLKSTCTRL_CLKACTIVITY_I2C0_GFCLK != + (REG(SOC_CM_WKUP_REGS + CM_WKUP_CLKSTCTRL) & + CM_WKUP_CLKSTCTRL_CLKACTIVITY_I2C0_GFCLK)); + + /* + ** Waiting for IDLEST field in CM_WKUP_I2C0_CLKCTRL register to attain + ** desired value. + */ + while((CM_WKUP_I2C0_CLKCTRL_IDLEST_FUNC << + CM_WKUP_I2C0_CLKCTRL_IDLEST_SHIFT) != + (REG(SOC_CM_WKUP_REGS + CM_WKUP_I2C0_CLKCTRL) & + CM_WKUP_I2C0_CLKCTRL_IDLEST)); +} + +/* +void am335x_i2c_init(bbb_i2c_bus *bus, uint32_t input_clock) +{ + // am335x_i2c_pinmux() + // am335x_i2c1_i2c2_module_clk_config +} +*/ + +static bool am335x_i2c_busbusy(volatile bbb_i2c_regs *regs) +{ + bool status; + unsigned short stat; + int timeout = I2C_TIMEOUT; + + REG(®s->BBB_I2C_IRQSTATUS)=0xffff; + printf("REG(®s->BBB_I2C_IRQSTATUS_RAW):%x\n",REG(®s->BBB_I2C_IRQSTATUS_RAW) ); + // printf("%x\n",0x1400 & 0x1000 ); + printf("REG(®s->BBB_I2C_IRQSTATUS_RAW) & AM335X_I2C_IRQSTATUS_RAW_BB:%x\n",(REG(®s->BBB_I2C_IRQSTATUS_RAW) & AM335X_I2C_IRQSTATUS_RAW_BB)); +while(stat =( REG(®s->BBB_I2C_IRQSTATUS_RAW) & AM335X_I2C_IRQSTATUS_RAW_BB) && timeout--) + { + +REG(®s->BBB_I2C_IRQSTATUS)=stat; + udelay(20); + + } + + if (timeout <= 0) { + printf("Timed out in wait_for_bb: status=%04x\n", + stat); + return 1; + } + REG(®s->BBB_I2C_IRQSTATUS)=0xffff; /* clear delayed stuff*/ + return 0; + +} + +static void am335x_i2c_reset(bbb_i2c_bus *bus) +{ + volatile bbb_i2c_regs *regs = bus->regs; + printk("reset bus->reg is %x \n",bus->regs); + /* Disable I2C module at the time of initialization*/ + /*Should I use write32 ?? I guess mmio_clear is correct choice here*/ + REG(®s->BBB_I2C_CON)=0x00; + printk("inside BBB_I2C_CON value is %x \n",®s->BBB_I2C_CON); + REG(®s->BBB_I2C_SYSC)= 0x2; +// mmio_clear((®s->BBB_I2C_CON),AM335X_I2C_CON_I2C_EN); + + REG(®s->BBB_I2C_CON)= AM335X_I2C_CON_I2C_EN; + + while((REG(®s->BBB_I2C_SYSS) &I2C_SYSS_RDONE)==0) //wait reset done + { + udelay(100); + + } + + REG(®s->BBB_I2C_CON)=0x00; + + am335x_i2c_set_clock(&bus->base, I2C_BUS_CLOCK_DEFAULT); + + REG(®s->BBB_I2C_CON)= AM335X_I2C_CON_MST | AM335X_I2C_CON_I2C_EN; + +// mmio_clear((®s->BBB_I2C_SYSC),AM335X_I2C_SYSC_AUTOIDLE); + + //REG(bus->regs + AM335X_I2C_CON) &= ~(AM335X_I2C_CON_I2C_EN); + //REG(bus->regs + AM335X_I2C_SYSC) &= ~(AM335X_I2C_SYSC_AUTOIDLE); + + /* + can I clear all the interrupt here ? + mmio_write(get_reg_addr(bbb_i2c_bus->reg->AM335X_I2C_IRQ_ENABLE_CLR), ??) + */ +} + +/* +Possible values for msg->flag + * - @ref I2C_M_TEN, + * - @ref I2C_M_RD, + * - @ref I2C_M_STOP, + * - @ref I2C_M_NOSTART, + * - @ref I2C_M_REV_DIR_ADDR, + * - @ref I2C_M_IGNORE_NAK, + * - @ref I2C_M_NO_RD_ACK, and + * - @ref I2C_M_RECV_LEN. +*/ + +static void am335x_i2c_set_address_size(const i2c_msg *msgs,volatile bbb_i2c_regs *regs) +{ + /*can be configured multiple modes here. Need to think about own address modes*/ + if ((msgs->flags & I2C_M_TEN) == 0) {/* 7-bit mode slave address mode*/ + mmio_write(®s->BBB_I2C_CON,(AM335X_I2C_CFG_7BIT_SLAVE_ADDR | AM335X_I2C_CON_I2C_EN)); + } else { /* 10-bit slave address mode*/ + mmio_write(®s->BBB_I2C_CON,(AM335X_I2C_CFG_10BIT_SLAVE_ADDR | AM335X_I2C_CON_I2C_EN)); + } + } + +static void am335x_i2c_next_byte(bbb_i2c_bus *bus) +{ + i2c_msg *msg; + + printk("Enter next_byte\n"); + ++bus->msgs; + --bus->msg_todo; + + msg = &bus->msgs[0]; + + bus->current_msg_todo = msg->len; + bus->current_msg_byte = msg->buf; +} + +static unsigned int am335x_i2c_intrawstatus(volatile bbb_i2c_regs *regs) +{ + return (REG(®s->BBB_I2C_IRQSTATUS_RAW)); +} + +static void am335x_i2c_masterint_enable(volatile bbb_i2c_regs *regs, unsigned int flag) +{ + printf("am335x_i2c_masterint_enable func\n"); + REG(®s->BBB_I2C_IRQENABLE_SET) |= flag; +} + +static void am335x_i2c_masterint_disable(volatile bbb_i2c_regs *regs, unsigned int flag) +{ + REG(®s->BBB_I2C_IRQENABLE_CLR) = flag; +} + +static void am335x_int_clear(volatile bbb_i2c_regs *regs, unsigned int flag) +{ + REG(®s->BBB_I2C_IRQSTATUS) = flag; +} + + +static void am335x_clean_interrupts(volatile bbb_i2c_regs *regs) +{ + printf("am335x_clean_interrupts func\n"); + am335x_i2c_masterint_enable(regs,0x7FFF); + am335x_int_clear(regs,0x7FFF); + am335x_i2c_masterint_disable(regs,0x7FFF); +} + + +static void am335x_i2c_setup_read_transfer(bbb_i2c_bus *bus, volatile bbb_i2c_regs *regs, const i2c_msg *msgs, bool send_stop) +{ + volatile unsigned int no_bytes; + //am335x_i2c_masterint_enable(regs, AM335X_I2C_INT_RECV_READY); + // No of data to be transmitted at a time + + +//bbb_i2c_bus *bus = (bbb_i2c_bus *) base; +// volatile bbb_i2c_regs *regs = bus->regs; + struct am335x_baseboard_id header; + + omap24_i2c_probe(&bus->base); + read_eeprom(&bus->base,&header); + +/* + REG(®s->BBB_I2C_CNT) = 0x02; + no_bytes = REG(®s->BBB_I2C_CNT); + + // Set Slave address & Master enable, bring out of reset + REG(®s->BBB_I2C_SA) = msgs->addr; + printf("slave address : %x\n",REG(®s->BBB_I2C_SA)); + + + // I2C Controller in Master Mode + REG(®s->BBB_I2C_CON) = AM335X_I2C_CFG_MST_TX | AM335X_I2C_CON_MST | AM335X_I2C_CON_START | AM335X_I2C_CON_I2C_EN | AM335X_I2C_CON_STOP; + printk("set master in transmission mode %x \n",REG(®s->BBB_I2C_CON)); + +while(am335x_i2c_busbusy(regs) != 0); + printk("bus is free \n"); + + + + + // clear status of all interrupts + am335x_clean_interrupts(regs); + printk("\n set memory address to read\n"); + + // transmit interrupt is enabled + + am335x_i2c_masterint_enable(regs,AM335X_I2C_IRQSTATUS_XRDY); + printk("Enable transmit interrupt \n"); + + + + //start condition + REG(®s->BBB_I2C_CON) |= AM335X_I2C_CON_START | AM335X_I2C_CON_I2C_EN; + printk("start transmission \n"); + + printk("CNT : %x\n", no_bytes); + printf("BBB_I2C_DATA:%x\n", readb(®s->BBB_I2C_DATA)); + +writeb(0x5,®s->BBB_I2C_DATA); +printf("(0x50 >> 8)& 0xff:%x\n",(0x50 >> 8)& 0xff); +printf("REG(®s->BBB_I2C_DATA):%x\n",readb(®s->BBB_I2C_DATA) ); +printf("®s->BBB_I2C_DATA:%x\n",®s->BBB_I2C_DATA); +//REG(®s->BBB_I2C_IRQSTATUS)=AM335X_I2C_IRQSTATUS_XRDY; + +udelay(10); + +writeb(0x0,®s->BBB_I2C_DATA); +//REG(®s->BBB_I2C_DATA)= ( (0x50 >> 0)& 0xff); +printf("(0x50 >> 0)& 0xff:%x\n",(0x50 >> 0)& 0xff); +printf("REG(®s->BBB_I2C_DATA):%x\n",readb(®s->BBB_I2C_DATA) ); + +REG(®s->BBB_I2C_IRQSTATUS)=AM335X_I2C_IRQSTATUS_XRDY; + + + // no_bytes = REG(®s->BBB_I2C_CNT); + while(0 != no_bytes); + printk("total msg count for tranmission is zero \n"); + while( !(am335x_i2c_intrawstatus(regs) & (AM335X_I2C_IRQSTATUS_ARDY))); + + printk("Enter read transfer \n"); + // No of data to be received at a time(msg_count!!) + printk("msg_todo for read is %d \n",bus->msg_todo); + REG(®s->BBB_I2C_CNT) = bus->msg_todo; + + // clear status of all interrupts + //am335x_clean_interrupts(regs); + + // I2C Controller in Master Mode + REG(®s->BBB_I2C_CON) = AM335X_I2C_CFG_MST_RX | AM335X_I2C_CON_I2C_EN | AM335X_I2C_CON_MST; + printk("Set master to receiver mode %x \n", REG(®s->BBB_I2C_CON)); + // receive interrupt is enabled + am335x_i2c_masterint_enable(regs, AM335X_I2C_INT_RECV_READY | AM335X_I2C_INT_STOP_CONDITION); + + if (send_stop) { + // stop condition + printk("stop to read\n"); + REG(®s->BBB_I2C_CON) |= AM335X_I2C_CON_STOP; + } else { + // start condition + printk("start to read\n"); + REG(®s->BBB_I2C_CON) |= AM335X_I2C_CON_START; + } + while(am335x_i2c_busbusy(regs) == 0); + */ + printk("Exit read transfer\n"); +} + + +static void am335x_i2c_continue_read_transfer( + bbb_i2c_bus *bus, + volatile bbb_i2c_regs *regs +) +{ + printk("enter continue read transfer \n"); + bus->current_msg_byte[bus->already_transferred] = REG(®s->BBB_I2C_DATA); + bus->already_transferred++; + am335x_int_clear(regs,AM335X_I2C_INT_RECV_READY); + printk("clear RRDY in continue read transfer\n"); + + if (bus->already_transferred == REG(®s->BBB_I2C_CNT)) { + printk("continue read transfer finished \n"); + //am335x_i2c_setup_read_transfer(bus,regs,false); + am335x_i2c_masterint_disable(regs, AM335X_I2C_INT_RECV_READY); + printk("disable RRDY in continue read transfer\n"); + REG(®s->BBB_I2C_CON) |= AM335X_I2C_CON_STOP; + printk("stop condition in continue read transfer %x\n",REG(®s->BBB_I2C_CON)); + } +} + +static void am335x_i2c_continue_write(bbb_i2c_bus *bus, volatile bbb_i2c_regs *regs) +{ + REG(®s->BBB_I2C_DATA) = 0x00; + am335x_int_clear(regs, AM335X_I2C_IRQSTATUS_XRDY); + printk("clear XRDY continue write\n"); + /* + if (bus->already_transferred == REG(®s->BBB_I2C_CNT)) { + printk("\n finished transfer \n"); + am335x_i2c_masterint_disable(regs, AM335X_I2C_IRQSTATUS_XRDY); + printk("disable XRDY continue write \n"); + REG(®s->BBB_I2C_CON) |= AM335X_I2C_CON_STOP; + } else { + printk("write memory address \n"); + REG(®s->BBB_I2C_DATA) = *bus->current_msg_byte; + } + */ + + /* + if (bus->already_transferred == bus->msg_todo) { + printk("finished transfer \n"); + am335x_int_clear(regs, AM335X_I2C_IRQSTATUS_XRDY); + REG(®s->BBB_I2C_CON) |= AM335X_I2C_CON_STOP; + } else { + printk("remaining byte \n"); + REG(®s->BBB_I2C_DATA) = bus->current_msg_byte[bus->already_transferred]; + printk("%s",REG(®s->BBB_I2C_DATA)); + bus->already_transferred++; + } + */ +} + +static void am335x_i2c_setup_write_transfer(bbb_i2c_bus *bus,volatile bbb_i2c_regs *regs) +{ + volatile unsigned int no_bytes; + printk(" \n Enter write transfer \n"); + + // Following data count specify bytes to be transmitted + REG(®s->BBB_I2C_CNT) = bus->msg_todo; + no_bytes = REG(®s->BBB_I2C_CNT); + // clear status of all interrupts + // Already cleaned during reset + am335x_clean_interrupts(regs); + + // I2C Controller in Master transmitter Mode + REG(®s->BBB_I2C_CON) = AM335X_I2C_CFG_MST_TX | AM335X_I2C_CON_I2C_EN; + printk("enable master in transmiter mode setup write %x\n",REG(®s->BBB_I2C_CON)); + + // transmit interrupt is enabled + am335x_i2c_masterint_enable(regs,AM335X_I2C_IRQSTATUS_XRDY); + printk("enable XRDY setup write\n"); + + //start condition + REG(®s->BBB_I2C_CON) |= AM335X_I2C_CON_START; + printk("set start condition in setup write %x \n",REG(®s->BBB_I2C_CON)); + + while(am335x_i2c_busbusy(regs) == 0); + printk("CNT in setup write : %x \n",REG(®s->BBB_I2C_CNT)); + printk("setup write msg_todo %x \n",bus->current_todo); + while(0 != no_bytes); + printk("check whether ???\n"); + printk("RAW = %x",REG(®s->BBB_I2C_IRQSTATUS_RAW)); + while( !((am335x_i2c_intrawstatus(regs)) & (AM335X_I2C_IRQSTATUS_ARDY))); + printk("exit setup write \n"); +} + + +static void am335x_i2c_setup_transfer(bbb_i2c_bus *bus, volatile bbb_i2c_regs *regs) +{ + const i2c_msg *msgs = bus->msgs; + uint32_t msg_todo = bus->msg_todo; + bool send_stop = false; + uint32_t i; + + printk("Enter setup transfer\n"); + bus->current_todo = msgs[0].len; + + for (i = 1; i < msg_todo && (msgs[i].flags & I2C_M_NOSTART) != 0; ++i) { + bus->current_todo += msgs[i].len; + } + + regs = bus->regs; + printf("REG(®s->BBB_I2C_DATA):%x\n",REG(®s->BBB_I2C_DATA) ); + // REG(&bus->regs->BBB_I2C_BUF) |= AM335X_I2C_BUF_TXFIFO_CLR; + // REG(&bus->regs->BBB_I2C_BUF) |= AM335X_I2C_BUF_RXFIFO_CLR; +printf("REG(®s->BBB_I2C_DATA):%x\n",REG(®s->BBB_I2C_DATA) ); + + // am335x_i2c_set_address_size(msgs,regs); +bus->read = (msgs->flags & I2C_M_RD) != 0; + +printf("bus->read:%d\n",bus->read ); + //bus->read = ((bus->read == true) ? 0:1); + bus->already_transferred = (bus->read == true) ? 0 : 1; + + if (bus->read) { + if (REG(®s->BBB_I2C_CNT) == 1) { + send_stop = true; + } + printk("configure to read bus\n"); + am335x_i2c_setup_read_transfer(bus,regs,msgs,send_stop); + } else { + printk("configure to write bus\n"); + am335x_i2c_setup_write_transfer(bus,regs); + } + +} + +static void am335x_i2c_interrupt(void *arg) +{ + bbb_i2c_bus *bus = arg; + volatile bbb_i2c_regs *regs = bus->regs; + /* get status of enabled interrupts */ + uint32_t irqstatus = REG(®s->BBB_I2C_IRQSTATUS); + bool done = false; + printk("\n inside interrupt function \n"); + /* Clear all enabled interrupt except receive ready and transmit ready interrupt in status register */ + REG(®s->BBB_I2C_IRQSTATUS) = (irqstatus & ~(AM335X_I2C_IRQSTATUS_RRDY | AM335X_I2C_IRQSTATUS_XRDY)); + printk("\n irqstatus = %x \n",REG(®s->BBB_I2C_IRQSTATUS)); + + if (irqstatus & AM335X_I2C_INT_RECV_READY) { + printk("\nInside receive interrupt\n"); + am335x_i2c_continue_read_transfer(bus, regs); + } + + if (irqstatus & AM335X_I2C_IRQSTATUS_XRDY) { + printk("\ninside transmit interrupt \n"); + am335x_i2c_continue_write(bus,regs); + } + + if (irqstatus & AM335X_I2C_IRQSTATUS_NACK) { + done = true; + printk("inside NACK\n"); + am335x_i2c_masterint_disable(regs,AM335X_I2C_IRQSTATUS_NACK); + } + + if (irqstatus & AM335X_I2C_IRQSTATUS_BF) { + done = true; + printk("inside BF \n "); + } + + if (done) { + uint32_t err = irqstatus & BBB_I2C_IRQ_ERROR; + printk("interrupt done \n"); + + am335x_i2c_next_byte(bus); + + if (bus->msg_todo == 0 || err != 0) { + rtems_status_code sc; + + // am335x_i2c_disable_interrupts(regs); + am335x_i2c_masterint_disable(regs, (AM335X_I2C_IRQSTATUS_RRDY | AM335X_I2C_IRQSTATUS_XRDY | AM335X_I2C_IRQSTATUS_BF)); + + REG(®s->BBB_I2C_IRQSTATUS) = err; + + sc = rtems_event_transient_send(bus->task_id); + _Assert(sc == RTEMS_SUCCESSFUL); + (void) sc; + } else { + am335x_i2c_setup_transfer(bus, regs); + } + } +} + +static int am335x_i2c_transfer(i2c_bus *base, i2c_msg *msgs, uint32_t msg_count) +{ + rtems_status_code sc; + bbb_i2c_bus *bus = (bbb_i2c_bus *)base; + volatile bbb_i2c_regs *regs; + uint32_t i; + printk("\n enter transfer\n "); + rtems_task_wake_after(1); + + + if (msg_count < 1){ + return 1; + } + + for (i=0; i<msg_count;++i) { + if ((msgs[i].flags & I2C_M_RECV_LEN) != 0) { + return -EINVAL; + } + } + printf("bus->regs:%x\n",bus->regs ); + bus->msgs = &msgs[0]; + bus->msg_todo = msg_count; + printk("total msg = msg_count : %x \n",bus->msg_todo); + bus->current_msg_todo = msgs[0].len;// current data size + //bus->current_msg_byte = msgs[0].buf;// current data + printk("\n current_msg_todo %x \n ",msgs[0].len); + printk("\n current_msg_byte %x \n ",msgs[0].buf); + //printf("8011A5CC:%x\n", *(unsigned int *)(0x8011A5CC) ); + bus->task_id = rtems_task_self(); + + regs = bus->regs; + + // REG(®s->BBB_I2C_IRQENABLE_SET) = BBB_I2C_IRQ_USED; + am335x_i2c_setup_transfer(bus,regs); + +/* + sc = rtems_event_transient_receive(RTEMS_WAIT, bus->base.timeout); + // If timeout then return timeout error + if (sc != RTEMS_SUCCESSFUL) { + am335x_i2c_reset(bus); + + rtems_event_transient_clear(); + + return -ETIMEDOUT; + } + */ + printk("exit transfer\n"); + + // return bus->regs->BBB_I2C_IRQSTATUS == 0 ? 0 : -EIO; + return 0; +} + +static int am335x_i2c_set_clock(i2c_bus *base, unsigned long clock) +{ + bbb_i2c_bus *bus = (bbb_i2c_bus *) base; + volatile bbb_i2c_regs *regs = bus->regs; + uint32_t prescaler,divider; + + printk("set clock start\n"); + REG(®s->BBB_I2C_CON)=0; + + prescaler = (BBB_I2C_SYSCLK / BBB_I2C_INTERNAL_CLK) -1; + printf("prescaler:%d\n",prescaler ); + printk("PSC offset %x \n ",®s->BBB_I2C_PSC); + printk("PSC offset %x \n", &bus->regs->BBB_I2C_PSC); + //mmio_write((®s->BBB_I2C_PSC), prescaler); + REG(&bus->regs->BBB_I2C_PSC) = prescaler; + + divider = BBB_I2C_INTERNAL_CLK/(2*clock); + printf("divider:%d\n", divider); + printk("SCLL offset %x \n",&bus->regs->BBB_I2C_SCLL); + //mmio_write((®s->BBB_I2C_SCLL), (divider - 7)); + REG(&bus->regs->BBB_I2C_SCLL) = (divider - 7); + //mmio_write((®s->BBB_I2C_SCLH), (divider - 5)); + printk("SCHL offset %x\n",&bus->regs->BBB_I2C_SCLH); + REG(&bus->regs->BBB_I2C_SCLH) = (divider - 5); + + REG(®s->BBB_I2C_CON)=I2C_CON_EN; + +writew(0xFFFF, &bus->regs->BBB_I2C_IRQSTATUS); /* clear all pending status */ + + printk("set clock end \n"); + return 0; +} + +static void am335x_i2c_destroy(i2c_bus *base) +{ + bbb_i2c_bus *bus = (bbb_i2c_bus *) base; + rtems_status_code sc; + printk(" starting destroy\n"); + sc = rtems_interrupt_handler_remove(bus->irq, am335x_i2c_interrupt, bus); + _Assert(sc == RTEMS_SUCCESSFUL); + (void)sc; + printk("end destroy\n"); + i2c_bus_destroy_and_free(&bus->base); +} + + + +int am335x_i2c_bus_register( + const char *bus_path, + uintptr_t register_base, + uint32_t input_clock, + rtems_vector_number irq +) +{ + + bbb_i2c_bus *bus; + rtems_status_code sc; + int err; + /*check bus number is >0 & <MAX*/ + + bus = (bbb_i2c_bus *) i2c_bus_alloc_and_init(sizeof(*bus)); + + if (bus == NULL) { + return -1; + } + + bus->regs = (volatile bbb_i2c_regs *) register_base; + +// 1. Enable clock for I2CX + I2C0ModuleClkConfig(); +// 2. pinmux setup + am335x_i2c0_pinmux(bus); +// 3. RESET : Disable Master, autoideal + // am335x_i2c_reset(bus); +// 4. configure bus speed + bus->input_clock = input_clock; // By default 100KHz. Normally pass 100KHz as argument + +/* + printk("Before set clock \n"); + err = am335x_i2c_set_clock(&bus->base, I2C_BUS_CLOCK_DEFAULT); + + if (err != 0) { + (*bus->base.destroy)(&bus->base); + + rtems_set_errno_and_return_minus_one(-err); + } + bus->irq = irq; + */ +omap24_i2c_init(&bus->base); + + //bring I2C out of reset + +//printf("REG(®s->BBB_I2C_IRQSTATUS):%x\n",REG(&bus->regs->BBB_I2C_IRQSTATUS)); + // REG(&bus->regs->BBB_I2C_CON) |= AM335X_I2C_CON_I2C_EN; + + // 5. Start interrupt service routine & one interrupt at a time +/* + sc = rtems_interrupt_handler_install( + irq, + "BBB I2C", + RTEMS_INTERRUPT_UNIQUE, + am335x_i2c_interrupt, + bus + ); + + if (sc != RTEMS_SUCCESSFUL) { + (*bus->base.destroy)(&bus->base); + + rtems_set_errno_and_return_minus_one(EIO); + } + */ + // 6. start transfer for reading and writing + bus->base.transfer = am335x_i2c_transfer; + bus->base.set_clock = am335x_i2c_set_clock; + bus->base.destroy = am335x_i2c_destroy; + printk("exit register\n"); + return i2c_bus_register(&bus->base,bus_path); +} + + + + + + +static void omap24_i2c_init(i2c_bus *base) +{ + bbb_i2c_bus *bus = (bbb_i2c_bus *) base; + volatile bbb_i2c_regs *regs = bus->regs; + + struct am335x_baseboard_id header; + + int timeout = I2C_TIMEOUT; + int deblock = 1; +printf("omap24_i2c_init func!!!!!!\n"); +retry: + if (readw(&bus->regs->BBB_I2C_CON) & I2C_CON_EN) { + writew(0, &bus->regs->BBB_I2C_CON); + udelay(50000); + } + + writew(0x2, &bus->regs->BBB_I2C_SYSC); /* for ES2 after soft reset */ + udelay(1000); + + writew(I2C_CON_EN, &bus->regs->BBB_I2C_CON); + while (!(readw(&bus->regs->BBB_I2C_SYSS) & I2C_SYSS_RDONE) && timeout--) { + if (timeout <= 0) { + puts("ERROR: Timeout in soft-reset\n"); + return; + } + udelay(1000); + } + +am335x_i2c_set_clock(&bus->base, I2C_BUS_CLOCK_DEFAULT); + + /* own address */ + writew(1, &bus->regs->BBB_I2C_OA); + +//#if defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX) + /* + * Have to enable interrupts for OMAP2/3, these IPs don't have + * an 'irqstatus_raw' register and we shall have to poll 'stat' + */ + // writew(I2C_IE_XRDY_IE | I2C_IE_RRDY_IE | I2C_IE_ARDY_IE | I2C_IE_NACK_IE | I2C_IE_AL_IE, &i2c_base->ie); +//#endif + udelay(1000); + flush_fifo(&bus->base); + writew(0xFFFF, &bus->regs->BBB_I2C_IRQSTATUS); + + /* Handle possible failed I2C state */ + if (wait_for_bb(&bus->base)) + if (deblock == 1) { + + //omap24_i2c_deblock(&bus->base); + printf("deblock\n"); + deblock = 0; + goto retry; + } + + + // omap24_i2c_probe(&bus->base); + // read_eeprom(&bus->base,&header); + +} + + +static void flush_fifo(i2c_bus *base) +{ + bbb_i2c_bus *bus = (bbb_i2c_bus *) base; + volatile bbb_i2c_regs *regs = bus->regs; + + + u16 stat; +printf("flush_fifo\n"); + /* + * note: if you try and read data when its not there or ready + * you get a bus error + */ + while (1) { + stat = readw(&bus->regs->BBB_I2C_IRQSTATUS); + if (stat == I2C_STAT_RRDY) { + readb(&bus->regs->BBB_I2C_DATA); + writew(I2C_STAT_RRDY, &bus->regs->BBB_I2C_IRQSTATUS); + udelay(1000); + } else + break; + } +} + + +static int wait_for_bb(i2c_bus *base) +{ + bbb_i2c_bus *bus = (bbb_i2c_bus *) base; + volatile bbb_i2c_regs *regs = bus->regs; + + + int timeout = I2C_TIMEOUT; + u16 stat; +printf("wait_for_bb\n"); + writew(0xFFFF, &bus->regs->BBB_I2C_IRQSTATUS); /* clear current interrupts...*/ +//printf("test1\n"); + /* Read RAW status */ +//printf("%x\n", readw(&bus->regs->BBB_I2C_IRQSTATUS_RAW) & I2C_STAT_BB); + while ((stat = readw(&bus->regs->BBB_I2C_IRQSTATUS_RAW) & + I2C_STAT_BB) && timeout--) { + + writew(stat, &bus->regs->BBB_I2C_IRQSTATUS); + udelay(200); + } + + if (timeout <= 0) { + printf("Timed out in wait_for_bb: status=%04x\n", + stat); + return 1; + } + writew(0xFFFF, &bus->regs->BBB_I2C_IRQSTATUS); /* clear delayed stuff*/ + return 0; +} + + +static int omap24_i2c_probe(i2c_bus *base) +{ + bbb_i2c_bus *bus = (bbb_i2c_bus *) base; + volatile bbb_i2c_regs *regs = bus->regs; + + unsigned char chip = 0x50; + u16 status; + int res = 1; /* default = fail */ + +printf("omap24_i2c_probe\n"); + if (chip == readw(&bus->regs->BBB_I2C_OA)) + return res; + + /* Wait until bus is free */ + if (wait_for_bb(&bus->base)) + return res; + + /* No data transfer, slave addr only */ + writew(chip, &bus->regs->BBB_I2C_SA); + /* Stop bit needed here */ + writew(I2C_CON_EN | I2C_CON_MST | I2C_CON_STT | I2C_CON_TRX | + I2C_CON_STP, &bus->regs->BBB_I2C_CON); + + status = wait_for_event(&bus->base); + + if ((status & ~I2C_STAT_XRDY) == 0 || (status & I2C_STAT_AL)) { + /* + * With current high-level command implementation, notifying + * the user shall flood the console with 127 messages. If + * silent exit is desired upon unconfigured bus, remove the + * following 'if' section: + */ + if (status == I2C_STAT_XRDY) + printf("i2c_probe: pads on bus probably not configured (status=0x%x)\n",status); + + goto pr_exit; + } + + /* Check for ACK (!NAK) */ + if (!(status & I2C_STAT_NACK)) { + printf("Device found\n"); + res = 0; /* Device found */ + udelay(200);/* Required by AM335X in SPL */ + /* Abort transfer (force idle state) */ + writew(I2C_CON_MST | I2C_CON_TRX, &bus->regs->BBB_I2C_CON); /* Reset */ + udelay(1000); + writew(I2C_CON_EN | I2C_CON_MST | I2C_CON_TRX | + I2C_CON_STP, &bus->regs->BBB_I2C_CON); /* STP */ + } +pr_exit: + flush_fifo(&bus->base); + writew(0xFFFF, &bus->regs->BBB_I2C_IRQSTATUS); + return res; +} + + +static u16 wait_for_event(i2c_bus *base) +{ + bbb_i2c_bus *bus = (bbb_i2c_bus *) base; + volatile bbb_i2c_regs *regs = bus->regs; + + + u16 status; + int timeout = I2C_TIMEOUT; +//printf("wait_for_event \n"); + do { + udelay(200); + + /* Read RAW status */ + status = readw(&bus->regs->BBB_I2C_IRQSTATUS_RAW); + + } while (!(status & + (I2C_STAT_ROVR | I2C_STAT_XUDF | I2C_STAT_XRDY | + I2C_STAT_RRDY | I2C_STAT_ARDY | I2C_STAT_NACK | + I2C_STAT_AL)) && timeout--); + + if (timeout <= 0) { + printf("Timed out in wait_for_event: status=%04x\n", + status); + /* + * If status is still 0 here, probably the bus pads have + * not been configured for I2C, and/or pull-ups are missing. + */ + printf("Check if pads/pull-ups of bus are properly configured\n"); + writew(0xFFFF, &bus->regs->BBB_I2C_IRQSTATUS); + status = 0; + } + + return status; +} + + + + +static int am335x_i2c_read(i2c_bus *base, unsigned char chip, uint addr, int alen, unsigned char *buffer, + int len) +{ + + bbb_i2c_bus *bus = (bbb_i2c_bus *) base; + volatile bbb_i2c_regs *regs = bus->regs; + + int i2c_error = 0; + int i=0; + u16 status; +printf("am335x_i2c_read\n"); + if (alen < 0) { + puts("I2C read: addr len < 0\n"); + return 1; + } + if (len < 0) { + puts("I2C read: data len < 0\n"); + return 1; + } + if (buffer == NULL) { + puts("I2C read: NULL pointer passed\n"); + return 1; + } + + if (alen > 2) { + printf("I2C read: addr len %d not supported\n", alen); + return 1; + } + + if (addr + len > (1 << 16)) { + puts("I2C read: address out of range\n"); + return 1; + } + + /* Wait until bus not busy */ + if (wait_for_bb(&bus->base)) + return 1; +//printf("test2\n"); + /* Zero, one or two bytes reg address (offset) */ + writew(alen, &bus->regs->BBB_I2C_CNT); + /* Set slave address */ + writew(chip, &bus->regs->BBB_I2C_SA); +//printf("test3\n"); + if (alen) { + /* Must write reg offset first */ + + /* Stop - Start (P-S) */ + writew(I2C_CON_EN | I2C_CON_MST | I2C_CON_STT | I2C_CON_STP | + I2C_CON_TRX, &bus->regs->BBB_I2C_CON); + + /* Send register offset */ + while (1) { + status = wait_for_event(&bus->base); + printf("status:%x\n",status ); + /* Try to identify bus that is not padconf'd for I2C */ + if (status == I2C_STAT_XRDY) { + i2c_error = 2; + printf("i2c_read (addr phase): pads on bus probably not configured (status=0x%x)\n", + status); + goto rd_exit; + } + if (status == 0 || (status & I2C_STAT_NACK)) { + i2c_error = 1; + printf("i2c_read: error waiting for addr ACK (status=0x%x)\n", + status); + goto rd_exit; + } + if (alen) { + if (status & I2C_STAT_XRDY) { + // printf("alen:%d\n",alen ); + alen--; + // printf("alen:%d\n",alen ); + // printf("addr:%x\n",addr ); + // printf("(addr >> (8 * alen)) & 0xff:%x\n",(addr >> (8 * alen)) & 0xff ); + /* Do we have to use byte access? */ + writeb((addr >> (8 * alen)) & 0xff, + &bus->regs->BBB_I2C_DATA); + writew(I2C_STAT_XRDY, &bus->regs->BBB_I2C_IRQSTATUS); + } + } + if (status & I2C_STAT_ARDY) { + writew(I2C_STAT_ARDY, &bus->regs->BBB_I2C_IRQSTATUS); + break; + } + } + } + /* Set slave address */ + writew(chip, &bus->regs->BBB_I2C_SA); + /* Read len bytes from slave */ + writew(len, &bus->regs->BBB_I2C_CNT); + /* Need stop bit here */ + writew(I2C_CON_EN | I2C_CON_MST | + I2C_CON_STT | I2C_CON_STP, + &bus->regs->BBB_I2C_CON); +//printf("test4\n"); + + + /* Receive data */ + while (1) { + status = wait_for_event(&bus->base); + // printf("test 5\n"); + /* + * Try to identify bus that is not padconf'd for I2C. This + * state could be left over from previous transactions if + * the address phase is skipped due to alen=0. + */ + if (status == I2C_STAT_XRDY) { + i2c_error = 2; + printf("i2c_read (data phase): pads on bus probably not configured (status=0x%x)\n", + status); + goto rd_exit; + } + if (status == 0 || (status & I2C_STAT_NACK)) { + // printf("i2c_error = 1\n"); + i2c_error = 1; + goto rd_exit; + } + if (status & I2C_STAT_RRDY) { + char temp; + temp=readb(&bus->regs->BBB_I2C_DATA); + *buffer++ =temp; + + *bus->msgs[0].buf++=temp; + // (*(uint8_t *) bus->current_msg_byte[0]) = readb(&bus->regs->BBB_I2C_DATA) & 0xFF; + i++; + writew(I2C_STAT_RRDY, &bus->regs->BBB_I2C_IRQSTATUS); + } + if (status & I2C_STAT_ARDY) { + writew(I2C_STAT_ARDY, &bus->regs->BBB_I2C_IRQSTATUS); + break; + } + } + +rd_exit: +//printf("rd_exit\n"); +//printf("i2c_error:%d\n",i2c_error); + flush_fifo(&bus->base); + writew(0xFFFF, &bus->regs->BBB_I2C_IRQSTATUS); + return i2c_error; +} + + + +static int read_eeprom(i2c_bus *base,struct am335x_baseboard_id *header) +{ + +bbb_i2c_bus *bus = (bbb_i2c_bus *) base; + volatile bbb_i2c_regs *regs = bus->regs; + +printf("sizeof(struct am335x_baseboard_id):%d\n",sizeof(struct am335x_baseboard_id) ); +//printf("sizeof(struct am335x_baseboard_id):%d\n",sizeof(unsigned int) ); +//printf("sizeof(struct am335x_baseboard_id):%d\n",sizeof(unsigned int) ); + am335x_i2c_read(&bus->base,0x50,0,2,(unsigned char *)header,sizeof(struct am335x_baseboard_id)); +/* +printf("am335x_i2c_read end\n"); + printf("header->magic:%x\n", header->magic); + printf("header->name[0]:%x\n", header->name[0]); + printf("header->name[1]:%x\n", header->name[1]); + printf("header->name[2]:%x\n", header->name[2]); + printf("header->name[3]:%x\n", header->name[3]); + printf("header->name[4]:%x\n", header->name[4]); + printf("header->name[5]:%x\n", header->name[5]); + printf("header->name[6]:%x\n", header->name[6]); + printf("header->name[7]:%x\n", header->name[7]); + */ +} + + + +static int am335x_i2c_write(i2c_bus *base, unsigned char chip, uint addr,int alen, unsigned char *buffer, + int len) +{ + + bbb_i2c_bus *bus = (bbb_i2c_bus *) base; + volatile bbb_i2c_regs *regs = bus->regs; + + int i; + u16 status; + int i2c_error = 0; + int timeout = I2C_TIMEOUT; + + if (alen < 0) { + puts("I2C write: addr len < 0\n"); + return 1; + } + + if (len < 0) { + puts("I2C write: data len < 0\n"); + return 1; + } + + if (buffer == NULL) { + puts("I2C write: NULL pointer passed\n"); + return 1; + } + + if (alen > 2) { + printf("I2C write: addr len %d not supported\n", alen); + return 1; + } + + if (addr + len > (1 << 16)) { + printf("I2C write: address 0x%x + 0x%x out of range\n", + addr, len); + return 1; + } + + /* Wait until bus not busy */ + if (wait_for_bb(&bus->base)) + return 1; + + /* Start address phase - will write regoffset + len bytes data */ + writew(alen + len, &bus->regs->BBB_I2C_CNT); + /* Set slave address */ + writew(chip,&bus->regs->BBB_I2C_SA); + /* Stop bit needed here */ + writew(I2C_CON_EN | I2C_CON_MST | I2C_CON_STT | I2C_CON_TRX | + I2C_CON_STP,&bus->regs->BBB_I2C_CON); + + while (alen) { + /* Must write reg offset (one or two bytes) */ + status = wait_for_event(&bus->base); + /* Try to identify bus that is not padconf'd for I2C */ + if (status == I2C_STAT_XRDY) { + i2c_error = 2; + printf("i2c_write: pads on bus probably not configured (status=0x%x)\n",status); + goto wr_exit; + } + if (status == 0 || (status & I2C_STAT_NACK)) { + i2c_error = 1; + printf("i2c_write: error waiting for addr ACK (status=0x%x)\n", + status); + goto wr_exit; + } + if (status & I2C_STAT_XRDY) { + alen--; + writeb((addr >> (8 * alen)) & 0xff, &bus->regs->BBB_I2C_DATA); + writew(I2C_STAT_XRDY, &bus->regs->BBB_I2C_IRQSTATUS); + } else { + i2c_error = 1; + printf("i2c_write: bus not ready for addr Tx (status=0x%x)\n", + status); + goto wr_exit; + } + } + /* Address phase is over, now write data */ + for (i = 0; i < len; i++) { + status = wait_for_event(&bus->base); + if (status == 0 || (status & I2C_STAT_NACK)) { + i2c_error = 1; + printf("i2c_write: error waiting for data ACK (status=0x%x)\n", + status); + goto wr_exit; + } + if (status & I2C_STAT_XRDY) { + writeb(buffer[i], &bus->regs->BBB_I2C_DATA); + writew(I2C_STAT_XRDY, &bus->regs->BBB_I2C_IRQSTATUS); + } else { + i2c_error = 1; + printf("i2c_write: bus not ready for data Tx (i=%d)\n", + i); + goto wr_exit; + } + } + /* + * poll ARDY bit for making sure that last byte really has been + * transferred on the bus. + */ + do { + status = wait_for_event(&bus->base); + } while (!(status & I2C_STAT_ARDY) && timeout--); + if (timeout <= 0) + printf("i2c_write: timed out writig last byte!\n"); + +wr_exit: + flush_fifo(&bus->base); + writew(0xFFFF, &bus->regs->BBB_I2C_IRQSTATUS); + return i2c_error; +} + +
--- /home/c/development/rtems/rtems-src/cpukit/dev/i2c/eeprom.c 2016-09-19 20:13:33.484638536 +0800
+++ /home/c/development/rtems/rtems-s/cpukit/dev/i2c/eeprom.c 2017-03-13 19:03:02.291729218 +0800
@@ -55,6 +55,7 @@
off_t offset
)
{
+
eeprom *dev = (eeprom *) base;
off_t avail = dev->size - offset;
uint32_t off = (uint32_t) offset;
@@ -86,6 +87,17 @@
(uint8_t) (off >> 16),
(uint8_t) (off >> 24)
};
+
+ i2c_msg msgs[1] = {
+ {
+ .addr = i2c_addr,
+ .flags = I2C_M_RD,
+ .buf = in,
+ .len = cur
+ }
+ };
+
+ /*
i2c_msg msgs[2] = {
{
.addr = i2c_addr,
@@ -99,14 +111,22 @@
.len = cur
}
};
+
+
+ */
int err;
+
+
err = i2c_bus_transfer(dev->base.bus, &msgs[0], RTEMS_ARRAY_SIZE(msgs));
+
+
if (err != 0) {
return err;
}
-
+
todo -= cur;
+
off += cur;
in += cur;
}
@@ -236,7 +256,7 @@
}
if (program_timeout_in_ms == 0) {
- program_timeout_in_ms = 1000;
+ program_timeout_in_ms = 5000;
}
dev = (eeprom *)
README
Description: README
_______________________________________________ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
