static u16 ads7846_do(u8 cmd)
{
u16 val = 0;
// send the command to the ADS7846, leave CS active after this
omap_uwire_data_transfer(ADS7846_UWIRE_CS, cmd, 8, 0, NULL, UWIRE_LEAVE_CS);
// now read returned data
omap_uwire_data_transfer(ADS7846_UWIRE_CS, 0, 0, 16, &val, !UWIRE_LEAVE_CS);
return val;
}
void omap_tsc2101_reads(int page, u8 startaddress, u16 * data, int numregs)
{
int cs = 0, i;
if (machine_is_omap_h2()) {
cs = 1;
}
if (machine_is_omap_h3()) {
cs = 0;
}
(void)omap_uwire_data_transfer(cs, (0x8000 | (page << 11)
| (startaddress << 5)),
16, 0, NULL, 1);
for (i = 0; i < (numregs - 1); i++, data++) {
omap_uwire_data_transfer(cs, 0, 0, 16, data, 1);
}
omap_uwire_data_transfer(cs, 0, 0, 16, data, 0);
}
void omap_tsc2101_write(int page, u8 address, u16 data)
{
int ret = 0;
if (machine_is_omap_h2()) {
ret =
omap_uwire_data_transfer(1,
(((page) << 11) | (address << 5)),
16, 0, NULL, 1);
if (ret) {
printk(KERN_ERR
"uwire-write returned error for address %x\n",
address);
return;
}
ret = omap_uwire_data_transfer(1, data, 16, 0, NULL, 0);
if (ret) {
printk(KERN_ERR
"uwire-write returned error for address %x\n",
address);
return;
}
}
if (machine_is_omap_h3()) {
ret =
omap_uwire_data_transfer(0, ((page << 11) | (address << 5)),
16, 0, NULL, 1);
if (ret) {
printk(KERN_ERR
"uwire-write returned error for address %x\n",
address);
return;
}
ret = omap_uwire_data_transfer(0, data, 16, 0, NULL, 0);
if (ret) {
printk(KERN_ERR
"uwire-write returned error for address %x\n",
address);
return;
}
}
}
