STMPE_IDX_CHIP_ID
ret = stmpe_block_read(stmpe, stmpe->regs[STMPE_IDX_CHIP_ID],
[STMPE_IDX_CHIP_ID] = STMPE801_REG_CHIP_ID,
[STMPE_IDX_CHIP_ID] = STMPE811_REG_CHIP_ID,
[STMPE_IDX_CHIP_ID] = STMPE1600_REG_CHIP_ID,
[STMPE_IDX_CHIP_ID] = STMPE1601_REG_CHIP_ID,
[STMPE_IDX_CHIP_ID] = STMPE1801_REG_CHIP_ID,
[STMPE_IDX_CHIP_ID] = STMPE24XX_REG_CHIP_ID,