diff options
| -rw-r--r-- | u-boot/board/goldelico/gta04/systest.c | 68 |
1 files changed, 67 insertions, 1 deletions
diff --git a/u-boot/board/goldelico/gta04/systest.c b/u-boot/board/goldelico/gta04/systest.c index 18fde65..590d70f 100644 --- a/u-boot/board/goldelico/gta04/systest.c +++ b/u-boot/board/goldelico/gta04/systest.c @@ -40,6 +40,7 @@ #include "twl4030-additions.h" #define TWL4030_I2C_BUS (1-1) +#define SENSORS_I2C_BUS (2-1) int bt_hci(int msg) { @@ -194,7 +195,7 @@ int systest(void) twl4030_i2c_read_u8(TWL4030_CHIP_MADC, &val2, 0x60); printf(" VBAT: %d\n", (val2<<2)+(val>>6)); } - i2c_set_bus_num(1); // I2C2 + i2c_set_bus_num(SENSORS_I2C_BUS); // I2C2 printf("TSC2007: %s\n", !i2c_probe(0x48)?"found":"-"); printf("TCA6507: %s\n", !i2c_probe(0x45)?"found":"-"); printf("LIS302 TOP: %s\n", !i2c_probe(0x1c)?"found":"-"); @@ -774,6 +775,71 @@ static struct }; +/* + int i2c_read(u_int8_t chip, u_int32_t addr, int alen, u_int8_t *buf, int len) + int i2c_write(u_int8_t chip, u_int32_t addr, int alen, u_int8_t *buf, int len) + */ + +#define TCA8418_BUS (2-1) // I2C1=0, I2C2=1, I2C3=2 +#define TCA8418_ADDRESS 0x34 + +int keytest(void) +{ + unsigned char byte; + printf("testing TCA8418 keyboard\n"); + if(i2c_set_bus_num(TCA8418_BUS)) + { + printf ("could not select I2C%d\n", TCA8418_BUS+1); + return 1; + } + + if(i2c_probe(TCA8418_ADDRESS)) + { + printf ("could not probe TCA8418 at 0x%02x\n", TCA8418_ADDRESS); + return 1; + } + + byte = 0x01; + i2c_write(TCA8418_ADDRESS, 0x01, 1, &byte, 1); // enable keyboard IRQ + byte = 0xff; + i2c_write(TCA8418_ADDRESS, 0x1d, 1, &byte, 1); // enable all lines as KP matrix + i2c_write(TCA8418_ADDRESS, 0x1e, 1, &byte, 1); // enable all lines as KP matrix + i2c_write(TCA8418_ADDRESS, 0x1f, 1, &byte, 1); // enable all lines as KP matrix + + while (!tstc()) + { + int keyint=(status_get_buttons() & (1<<5)) != 0; // get_button() knows how to read the KEYIRQ +#if 1 + if(!keyint) + continue; // wait for key interrupt +#endif + i2c_read(TCA8418_ADDRESS, 0x02, 1, &byte, 1); // read int-status register +#if 0 + printf("keyint=%d intstat=%02x\r", keyint, byte); +#endif + if(byte&1) + { // read matrix + int i; + unsigned char events; + i2c_read(TCA8418_ADDRESS, 0x03, 1, &events, 1); // read number of events in FIFO + events &= 0x0f; // up to 10 + for(i=0; i < events; i++) + { + i2c_read(TCA8418_ADDRESS, 0x04, 1, &byte, 1); // read keypad event as often as there is an event + if(byte & 0x80) + printf("press %2d\n", byte&0x7f); + else + printf("release %2d\n", byte&0x7f); + } + byte=0x01; + i2c_write(TCA8418_ADDRESS, 0x02, 1, &byte, 1); // write int-status register to reset keypad int + } + } + if(tstc()) + getc(); + printf("\n"); + return 0; +} int gpiotest(void) { |