diff options
| -rw-r--r-- | packages/i2c-tools/picodlp-control/i2c-dev.h | 325 | ||||
| -rw-r--r-- | packages/i2c-tools/picodlp-control/picodlp-control.c | 76 | ||||
| -rw-r--r-- | packages/i2c-tools/picodlp-control_0.1.bb | 18 |
3 files changed, 419 insertions, 0 deletions
diff --git a/packages/i2c-tools/picodlp-control/i2c-dev.h b/packages/i2c-tools/picodlp-control/i2c-dev.h new file mode 100644 index 0000000000..98a87f2c06 --- /dev/null +++ b/packages/i2c-tools/picodlp-control/i2c-dev.h @@ -0,0 +1,325 @@ +/* + i2c-dev.h - i2c-bus driver, char device interface + + Copyright (C) 1995-97 Simon G. Vogl + Copyright (C) 1998-99 Frodo Looijaard <frodol@dds.nl> + + 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 2 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. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +/* $Id: i2c-dev.h 3177 2005-11-05 17:11:47Z khali $ */ + +#ifndef LIB_I2CDEV_H +#define LIB_I2CDEV_H + +#include <linux/types.h> +#include <sys/ioctl.h> + + +/* -- i2c.h -- */ + + +/* + * I2C Message - used for pure i2c transaction, also from /dev interface + */ +struct i2c_msg { + __u16 addr; /* slave address */ + unsigned short flags; +#define I2C_M_TEN 0x10 /* we have a ten bit chip address */ +#define I2C_M_RD 0x01 +#define I2C_M_NOSTART 0x4000 +#define I2C_M_REV_DIR_ADDR 0x2000 +#define I2C_M_IGNORE_NAK 0x1000 +#define I2C_M_NO_RD_ACK 0x0800 + short len; /* msg length */ + char *buf; /* pointer to msg data */ +}; + +/* To determine what functionality is present */ + +#define I2C_FUNC_I2C 0x00000001 +#define I2C_FUNC_10BIT_ADDR 0x00000002 +#define I2C_FUNC_PROTOCOL_MANGLING 0x00000004 /* I2C_M_{REV_DIR_ADDR,NOSTART,..} */ +#define I2C_FUNC_SMBUS_HWPEC_CALC 0x00000008 /* SMBus 2.0 */ +#define I2C_FUNC_SMBUS_BLOCK_PROC_CALL 0x00008000 /* SMBus 2.0 */ +#define I2C_FUNC_SMBUS_QUICK 0x00010000 +#define I2C_FUNC_SMBUS_READ_BYTE 0x00020000 +#define I2C_FUNC_SMBUS_WRITE_BYTE 0x00040000 +#define I2C_FUNC_SMBUS_READ_BYTE_DATA 0x00080000 +#define I2C_FUNC_SMBUS_WRITE_BYTE_DATA 0x00100000 +#define I2C_FUNC_SMBUS_READ_WORD_DATA 0x00200000 +#define I2C_FUNC_SMBUS_WRITE_WORD_DATA 0x00400000 +#define I2C_FUNC_SMBUS_PROC_CALL 0x00800000 +#define I2C_FUNC_SMBUS_READ_BLOCK_DATA 0x01000000 +#define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA 0x02000000 +#define I2C_FUNC_SMBUS_READ_I2C_BLOCK 0x04000000 /* I2C-like block xfer */ +#define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK 0x08000000 /* w/ 1-byte reg. addr. */ +#define I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 0x10000000 /* I2C-like block xfer */ +#define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2 0x20000000 /* w/ 2-byte reg. addr. */ + +#define I2C_FUNC_SMBUS_BYTE (I2C_FUNC_SMBUS_READ_BYTE | \ + I2C_FUNC_SMBUS_WRITE_BYTE) +#define I2C_FUNC_SMBUS_BYTE_DATA (I2C_FUNC_SMBUS_READ_BYTE_DATA | \ + I2C_FUNC_SMBUS_WRITE_BYTE_DATA) +#define I2C_FUNC_SMBUS_WORD_DATA (I2C_FUNC_SMBUS_READ_WORD_DATA | \ + I2C_FUNC_SMBUS_WRITE_WORD_DATA) +#define I2C_FUNC_SMBUS_BLOCK_DATA (I2C_FUNC_SMBUS_READ_BLOCK_DATA | \ + I2C_FUNC_SMBUS_WRITE_BLOCK_DATA) +#define I2C_FUNC_SMBUS_I2C_BLOCK (I2C_FUNC_SMBUS_READ_I2C_BLOCK | \ + I2C_FUNC_SMBUS_WRITE_I2C_BLOCK) +#define I2C_FUNC_SMBUS_I2C_BLOCK_2 (I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 | \ + I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2) + +/* + * Data for SMBus Messages + */ +#define I2C_SMBUS_BLOCK_MAX 32 /* As specified in SMBus standard */ +#define I2C_SMBUS_I2C_BLOCK_MAX 32 /* Not specified but we use same structure */ +union i2c_smbus_data { + __u8 byte; + __u16 word; + __u8 block[I2C_SMBUS_BLOCK_MAX + 2]; /* block[0] is used for length */ + /* and one more for PEC */ +}; + +/* smbus_access read or write markers */ +#define I2C_SMBUS_READ 1 +#define I2C_SMBUS_WRITE 0 + +/* SMBus transaction types (size parameter in the above functions) + Note: these no longer correspond to the (arbitrary) PIIX4 internal codes! */ +#define I2C_SMBUS_QUICK 0 +#define I2C_SMBUS_BYTE 1 +#define I2C_SMBUS_BYTE_DATA 2 +#define I2C_SMBUS_WORD_DATA 3 +#define I2C_SMBUS_PROC_CALL 4 +#define I2C_SMBUS_BLOCK_DATA 5 +#define I2C_SMBUS_I2C_BLOCK_DATA 6 +#define I2C_SMBUS_BLOCK_PROC_CALL 7 /* SMBus 2.0 */ + + +/* ----- commands for the ioctl like i2c_command call: + * note that additional calls are defined in the algorithm and hw + * dependent layers - these can be listed here, or see the + * corresponding header files. + */ + /* -> bit-adapter specific ioctls */ +#define I2C_RETRIES 0x0701 /* number of times a device address */ + /* should be polled when not */ + /* acknowledging */ +#define I2C_TIMEOUT 0x0702 /* set timeout - call with int */ + + +/* this is for i2c-dev.c */ +#define I2C_SLAVE 0x0703 /* Change slave address */ + /* Attn.: Slave address is 7 or 10 bits */ +#define I2C_SLAVE_FORCE 0x0706 /* Change slave address */ + /* Attn.: Slave address is 7 or 10 bits */ + /* This changes the address, even if it */ + /* is already taken! */ +#define I2C_TENBIT 0x0704 /* 0 for 7 bit addrs, != 0 for 10 bit */ + +#define I2C_FUNCS 0x0705 /* Get the adapter functionality */ +#define I2C_RDWR 0x0707 /* Combined R/W transfer (one stop only)*/ +#define I2C_PEC 0x0708 /* != 0 for SMBus PEC */ + +#define I2C_SMBUS 0x0720 /* SMBus-level access */ + +/* -- i2c.h -- */ + + +/* Note: 10-bit addresses are NOT supported! */ + +/* This is the structure as used in the I2C_SMBUS ioctl call */ +struct i2c_smbus_ioctl_data { + char read_write; + __u8 command; + int size; + union i2c_smbus_data *data; +}; + +/* This is the structure as used in the I2C_RDWR ioctl call */ +struct i2c_rdwr_ioctl_data { + struct i2c_msg *msgs; /* pointers to i2c_msgs */ + int nmsgs; /* number of i2c_msgs */ +}; + + +static inline __s32 i2c_smbus_access(int file, char read_write, __u8 command, + int size, union i2c_smbus_data *data) +{ + struct i2c_smbus_ioctl_data args; + + args.read_write = read_write; + args.command = command; + args.size = size; + args.data = data; + return ioctl(file,I2C_SMBUS,&args); +} + + +static inline __s32 i2c_smbus_write_quick(int file, __u8 value) +{ + return i2c_smbus_access(file,value,0,I2C_SMBUS_QUICK,NULL); +} + +static inline __s32 i2c_smbus_read_byte(int file) +{ + union i2c_smbus_data data; + if (i2c_smbus_access(file,I2C_SMBUS_READ,0,I2C_SMBUS_BYTE,&data)) + return -1; + else + return 0x0FF & data.byte; +} + +static inline __s32 i2c_smbus_write_byte(int file, __u8 value) +{ + return i2c_smbus_access(file,I2C_SMBUS_WRITE,value, + I2C_SMBUS_BYTE,NULL); +} + +static inline __s32 i2c_smbus_read_byte_data(int file, __u8 command) +{ + union i2c_smbus_data data; + if (i2c_smbus_access(file,I2C_SMBUS_READ,command, + I2C_SMBUS_BYTE_DATA,&data)) + return -1; + else + return 0x0FF & data.byte; +} + +static inline __s32 i2c_smbus_write_byte_data(int file, __u8 command, + __u8 value) +{ + union i2c_smbus_data data; + data.byte = value; + return i2c_smbus_access(file,I2C_SMBUS_WRITE,command, + I2C_SMBUS_BYTE_DATA, &data); +} + +static inline __s32 i2c_smbus_read_word_data(int file, __u8 command) +{ + union i2c_smbus_data data; + if (i2c_smbus_access(file,I2C_SMBUS_READ,command, + I2C_SMBUS_WORD_DATA,&data)) + return -1; + else + return 0x0FFFF & data.word; +} + +static inline __s32 i2c_smbus_write_word_data(int file, __u8 command, + __u16 value) +{ + union i2c_smbus_data data; + data.word = value; + return i2c_smbus_access(file,I2C_SMBUS_WRITE,command, + I2C_SMBUS_WORD_DATA, &data); +} + +static inline __s32 i2c_smbus_process_call(int file, __u8 command, __u16 value) +{ + union i2c_smbus_data data; + data.word = value; + if (i2c_smbus_access(file,I2C_SMBUS_WRITE,command, + I2C_SMBUS_PROC_CALL,&data)) + return -1; + else + return 0x0FFFF & data.word; +} + + +/* Returns the number of read bytes */ +static inline __s32 i2c_smbus_read_block_data(int file, __u8 command, + __u8 *values) +{ + union i2c_smbus_data data; + int i; + if (i2c_smbus_access(file,I2C_SMBUS_READ,command, + I2C_SMBUS_BLOCK_DATA,&data)) + return -1; + else { + for (i = 1; i <= data.block[0]; i++) + values[i-1] = data.block[i]; + return data.block[0]; + } +} + +static inline __s32 i2c_smbus_write_block_data(int file, __u8 command, + __u8 length, __u8 *values) +{ + union i2c_smbus_data data; + int i; + if (length > 32) + length = 32; + for (i = 1; i <= length; i++) + data.block[i] = values[i-1]; + data.block[0] = length; + return i2c_smbus_access(file,I2C_SMBUS_WRITE,command, + I2C_SMBUS_BLOCK_DATA, &data); +} + +/* Returns the number of read bytes */ +static inline __s32 i2c_smbus_read_i2c_block_data(int file, __u8 command, + __u8 *values) +{ + union i2c_smbus_data data; + int i; + if (i2c_smbus_access(file,I2C_SMBUS_READ,command, + I2C_SMBUS_I2C_BLOCK_DATA,&data)) + return -1; + else { + for (i = 1; i <= data.block[0]; i++) + values[i-1] = data.block[i]; + return data.block[0]; + } +} + +static inline __s32 i2c_smbus_write_i2c_block_data(int file, __u8 command, + __u8 length, __u8 *values) +{ + union i2c_smbus_data data; + int i; + if (length > 32) + length = 32; + for (i = 1; i <= length; i++) + data.block[i] = values[i-1]; + data.block[0] = length; + return i2c_smbus_access(file,I2C_SMBUS_WRITE,command, + I2C_SMBUS_I2C_BLOCK_DATA, &data); +} + +/* Returns the number of read bytes */ +static inline __s32 i2c_smbus_block_process_call(int file, __u8 command, + __u8 length, __u8 *values) +{ + union i2c_smbus_data data; + int i; + if (length > 32) + length = 32; + for (i = 1; i <= length; i++) + data.block[i] = values[i-1]; + data.block[0] = length; + if (i2c_smbus_access(file,I2C_SMBUS_WRITE,command, + I2C_SMBUS_BLOCK_PROC_CALL,&data)) + return -1; + else { + for (i = 1; i <= data.block[0]; i++) + values[i-1] = data.block[i]; + return data.block[0]; + } +} + + +#endif /* LIB_I2CDEV_H */ diff --git a/packages/i2c-tools/picodlp-control/picodlp-control.c b/packages/i2c-tools/picodlp-control/picodlp-control.c new file mode 100644 index 0000000000..8120356f7d --- /dev/null +++ b/packages/i2c-tools/picodlp-control/picodlp-control.c @@ -0,0 +1,76 @@ +/* + * Copyright (C) Koen Kooi <<koen@beagleboard.org> + * + * The pico DLP Controller Driver is free software; you + * can redistribute it and/or modify it under the terms of the GNU + * General Public License version 3 as published by the Free Software + * Foundation. + * + * The pico DLP Controller Driver 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. + * + * You should have received a copy of the GNU General Public License + * along with The pico DLP Controller Driver ; if not, + * write to the Free Software Foundation, Inc., 59 Temple Place, + * Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <stdio.h> +#include <stdlib.h> +#include <stdint.h> +#include <sys/ioctl.h> +#include <unistd.h> +#include <errno.h> +#include <fcntl.h> + +#include "i2c-dev.h" + +#define ADDRESS 0x1a + +int +main (int argc, char **argv) +{ + + int fd = 0; + + /* Attempt to open I2C device (/dev/i2c-3) */ + fd = open ("/dev/i2c-3", O_RDWR); + if (fd == -1) + { + fprintf (stderr, "Failed to open pico DLP I2C device: %m\n"); + exit (0); + } + + /* Set the slave address of type I2C_SLAVE */ + if (ioctl (fd, I2C_SLAVE, ADDRESS) < 0) + { + fprintf (stderr, "Failed to access pico DLp: %m\n"); + exit (0); + } + + /* Attempt to enable checksumming */ + if (ioctl (fd, I2C_PEC, 1) < 0) + { + fprintf (stderr, "Failed to enable PEC\n"); + exit (0); + } + + uint16_t hflip; /* The horizontal flip bit */ + uint16_t vflip; /* The vertical flip bit */ + + /* Read the status bits for horizontal and vertical vlip */ + hflip = i2c_smbus_read_word_data (fd, 0x08); + vflip = i2c_smbus_read_word_data (fd, 0x09); + + + + /* Output the values to stdout */ + fprintf (stdout, "hflip: %d - vflip: %d\n", hflip, vflip); + + return 0; + +} diff --git a/packages/i2c-tools/picodlp-control_0.1.bb b/packages/i2c-tools/picodlp-control_0.1.bb new file mode 100644 index 0000000000..add0839a8f --- /dev/null +++ b/packages/i2c-tools/picodlp-control_0.1.bb @@ -0,0 +1,18 @@ +DESCRIPTION = "Small application to control the pico DLP over I2C" +LICENSE = "GPLv3" + +SRC_URI = "file://${PN}.c file://i2c-dev.h" + +do_configure() { + cp ${WORKDIR}/*.[ch] ${S} +} + +do_compile() { + ${CC} -o ${PN} ${PN}.c ${CFGLAGS} ${LDFLAGS} +} + +do_install() { + install -d ${D}/${bindir} + install -m -755 ${S}/${PN} {D}/${bindir} +} + |