| -rw-r--r-- | libopie2/opiecore/device/odevice_simpad.cpp | 87 |
1 files changed, 68 insertions, 19 deletions
diff --git a/libopie2/opiecore/device/odevice_simpad.cpp b/libopie2/opiecore/device/odevice_simpad.cpp index 2d0160d..fd46b95 100644 --- a/libopie2/opiecore/device/odevice_simpad.cpp +++ b/libopie2/opiecore/device/odevice_simpad.cpp @@ -198,2 +198,63 @@ void SIMpad::initButtons() + +/* + * The SIMpad exposes ChipSelect3 to userspace + * via a proc filesystem file. Using this register + * one can toggle power of serial, irda, dect circuits + * change the video driver and display status and + * many more things. + * To not lose the current setting we read the current + * cs3 setting and toggle the necessary bits and then + * write it. + */ +static bool setCS3Bit( bool bitset, int bit ) { + int cs3_fd = ::open( SIMPAD_BOARDCONTROL, O_RDONLY ); + + if ( cs3_fd < 0 ) + return false; + + static char line[32]; + int val = 0; + bool ok = false; + + /* + * try to read and parse the Chipselect3 status + * be paranoid and make sure line[31] is null + * terminated + */ + while( !ok && ::read(cs3_fd, &line, sizeof(line)) > 0 ) { + line[31] = '\0'; + if (::sscanf(line, "Chipselect3 : %x", &val )) + ok = true; + } + + ::close(cs3_fd); + + /* + * we were not able to find the current value + * and as a result we won't set it + */ + if ( !ok ) + return false; + + /* + * change the value + */ + val = bitset ? (val | bit) : (val & ~bit); + + /* + * write it back + */ + cs3_fd = ::open( SIMPAD_BOARDCONTROL, O_WRONLY ); + if ( cs3_fd < 0 ) + return false; + + ::snprintf(line, sizeof(line), "0x%04x\n", val); + ::write(cs3_fd, line, strlen(line)); + ::close(cs3_fd); + + return true; +} + + QValueList <OLed> SIMpad::ledList() const @@ -231,17 +292,8 @@ bool SIMpad::setLedState ( OLed l, OLedState st ) { -#if 0 - static int fd = ::open ( SIMPAD_BOARDCONTROL, O_RDWR | O_NONBLOCK ); - - /*TODO Implement this like that: - read from cs3 - && with SIMPAD_LED2_ON - write to cs3 */ - m_leds [0] = st; - return true; - // } -// } -#else - Q_UNUSED( l ) - Q_UNUSED( st ) -#endif + if ( l == Led_Power ) { + m_leds [0] = st; + setCS3Bit(st == Led_On, SIMPAD_LED2_ON); + return true; + } + return false; @@ -312,6 +364,3 @@ bool SIMpad::setDisplayStatus ( bool on ) - - QString cmdline = QString().sprintf( "echo %s > /proc/cs3", on ? "0xd41a" : "0xd40a" ); //TODO make better :) - - return ( ::system( (const char*) cmdline ) == 0 ); + return setCS3Bit(on, SIMPAD_DISPLAY_ON); } |