Lines Matching full:omap
2 * TI OMAP I2C master mode driver
39 #include <linux/platform_data/i2c-omap.h>
272 static inline void omap_i2c_write_reg(struct omap_i2c_dev *omap, in omap_i2c_write_reg() argument
275 writew_relaxed(val, omap->base + in omap_i2c_write_reg()
276 (omap->regs[reg] << omap->reg_shift)); in omap_i2c_write_reg()
279 static inline u16 omap_i2c_read_reg(struct omap_i2c_dev *omap, int reg) in omap_i2c_read_reg() argument
281 return readw_relaxed(omap->base + in omap_i2c_read_reg()
282 (omap->regs[reg] << omap->reg_shift)); in omap_i2c_read_reg()
285 static void __omap_i2c_init(struct omap_i2c_dev *omap) in __omap_i2c_init() argument
288 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, 0); in __omap_i2c_init()
291 omap_i2c_write_reg(omap, OMAP_I2C_PSC_REG, omap->pscstate); in __omap_i2c_init()
294 omap_i2c_write_reg(omap, OMAP_I2C_SCLL_REG, omap->scllstate); in __omap_i2c_init()
295 omap_i2c_write_reg(omap, OMAP_I2C_SCLH_REG, omap->sclhstate); in __omap_i2c_init()
296 if (omap->rev >= OMAP_I2C_REV_ON_3430_3530) in __omap_i2c_init()
297 omap_i2c_write_reg(omap, OMAP_I2C_WE_REG, omap->westate); in __omap_i2c_init()
300 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, OMAP_I2C_CON_EN); in __omap_i2c_init()
312 if (omap->iestate) in __omap_i2c_init()
313 omap_i2c_write_reg(omap, OMAP_I2C_IE_REG, omap->iestate); in __omap_i2c_init()
316 static int omap_i2c_reset(struct omap_i2c_dev *omap) in omap_i2c_reset() argument
321 if (omap->rev >= OMAP_I2C_OMAP1_REV_2) { in omap_i2c_reset()
322 sysc = omap_i2c_read_reg(omap, OMAP_I2C_SYSC_REG); in omap_i2c_reset()
325 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, in omap_i2c_reset()
326 omap_i2c_read_reg(omap, OMAP_I2C_CON_REG) & in omap_i2c_reset()
329 omap_i2c_write_reg(omap, OMAP_I2C_SYSC_REG, SYSC_SOFTRESET_MASK); in omap_i2c_reset()
333 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, OMAP_I2C_CON_EN); in omap_i2c_reset()
334 while (!(omap_i2c_read_reg(omap, OMAP_I2C_SYSS_REG) & in omap_i2c_reset()
337 dev_warn(omap->dev, "timeout waiting " in omap_i2c_reset()
345 omap_i2c_write_reg(omap, OMAP_I2C_SYSC_REG, sysc); in omap_i2c_reset()
347 if (omap->rev > OMAP_I2C_REV_ON_3430_3530) { in omap_i2c_reset()
349 omap->bb_valid = 0; in omap_i2c_reset()
356 static int omap_i2c_init(struct omap_i2c_dev *omap) in omap_i2c_init() argument
365 if (omap->rev >= OMAP_I2C_REV_ON_3430_3530) { in omap_i2c_init()
371 omap->westate = OMAP_I2C_WE_ALL; in omap_i2c_init()
374 if (omap->flags & OMAP_I2C_FLAG_ALWAYS_ARMXOR_CLK) { in omap_i2c_init()
381 fclk = clk_get(omap->dev, "fck"); in omap_i2c_init()
384 dev_err(omap->dev, "could not get fck: %i\n", error); in omap_i2c_init()
405 if (!(omap->flags & OMAP_I2C_FLAG_SIMPLE_CLOCK)) { in omap_i2c_init()
413 if (omap->speed > 400 || in omap_i2c_init()
414 omap->flags & OMAP_I2C_FLAG_FORCE_19200_INT_CLK) in omap_i2c_init()
416 else if (omap->speed > 100) in omap_i2c_init()
420 fclk = clk_get(omap->dev, "fck"); in omap_i2c_init()
423 dev_err(omap->dev, "could not get fck: %i\n", error); in omap_i2c_init()
435 if (omap->speed > 400) { in omap_i2c_init()
444 scl = fclk_rate / omap->speed; in omap_i2c_init()
447 } else if (omap->speed > 100) { in omap_i2c_init()
451 scl = internal_clk / omap->speed; in omap_i2c_init()
456 fsscll = internal_clk / (omap->speed * 2) - 7; in omap_i2c_init()
457 fssclh = internal_clk / (omap->speed * 2) - 5; in omap_i2c_init()
466 scll = fclk_rate / (omap->speed * 2) - 7 + psc; in omap_i2c_init()
467 sclh = fclk_rate / (omap->speed * 2) - 7 + psc; in omap_i2c_init()
470 omap->iestate = (OMAP_I2C_IE_XRDY | OMAP_I2C_IE_RRDY | in omap_i2c_init()
472 OMAP_I2C_IE_AL) | ((omap->fifo_size) ? in omap_i2c_init()
475 omap->pscstate = psc; in omap_i2c_init()
476 omap->scllstate = scll; in omap_i2c_init()
477 omap->sclhstate = sclh; in omap_i2c_init()
479 if (omap->rev <= OMAP_I2C_REV_ON_3430_3530) { in omap_i2c_init()
481 omap->bb_valid = 1; in omap_i2c_init()
484 __omap_i2c_init(omap); in omap_i2c_init()
492 static int omap_i2c_recover_bus(struct omap_i2c_dev *omap) in omap_i2c_recover_bus() argument
496 systest = omap_i2c_read_reg(omap, OMAP_I2C_SYSTEST_REG); in omap_i2c_recover_bus()
502 return i2c_recover_bus(&omap->adapter); in omap_i2c_recover_bus()
508 static int omap_i2c_wait_for_bb(struct omap_i2c_dev *omap) in omap_i2c_wait_for_bb() argument
513 while (omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG) & OMAP_I2C_STAT_BB) { in omap_i2c_wait_for_bb()
515 return omap_i2c_recover_bus(omap); in omap_i2c_wait_for_bb()
550 static int omap_i2c_wait_for_bb_valid(struct omap_i2c_dev *omap) in omap_i2c_wait_for_bb_valid() argument
557 if (omap->bb_valid) in omap_i2c_wait_for_bb_valid()
562 stat = omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG); in omap_i2c_wait_for_bb_valid()
575 systest = omap_i2c_read_reg(omap, OMAP_I2C_SYSTEST_REG); in omap_i2c_wait_for_bb_valid()
601 dev_warn(omap->dev, "timeout waiting for bus ready\n"); in omap_i2c_wait_for_bb_valid()
602 return omap_i2c_recover_bus(omap); in omap_i2c_wait_for_bb_valid()
608 omap->bb_valid = 1; in omap_i2c_wait_for_bb_valid()
612 static void omap_i2c_resize_fifo(struct omap_i2c_dev *omap, u8 size, bool is_rx) in omap_i2c_resize_fifo() argument
616 if (omap->flags & OMAP_I2C_FLAG_NO_FIFO) in omap_i2c_resize_fifo()
626 omap->threshold = clamp(size, (u8) 1, omap->fifo_size); in omap_i2c_resize_fifo()
628 buf = omap_i2c_read_reg(omap, OMAP_I2C_BUF_REG); in omap_i2c_resize_fifo()
633 buf |= ((omap->threshold - 1) << 8) | OMAP_I2C_BUF_RXFIF_CLR; in omap_i2c_resize_fifo()
637 buf |= (omap->threshold - 1) | OMAP_I2C_BUF_TXFIF_CLR; in omap_i2c_resize_fifo()
640 omap_i2c_write_reg(omap, OMAP_I2C_BUF_REG, buf); in omap_i2c_resize_fifo()
642 if (omap->rev < OMAP_I2C_REV_ON_3630) in omap_i2c_resize_fifo()
643 omap->b_hw = 1; /* Enable hardware fixes */ in omap_i2c_resize_fifo()
646 if (omap->set_mpu_wkup_lat != NULL) in omap_i2c_resize_fifo()
647 omap->latency = (1000000 * omap->threshold) / in omap_i2c_resize_fifo()
648 (1000 * omap->speed / 8); in omap_i2c_resize_fifo()
657 struct omap_i2c_dev *omap = i2c_get_adapdata(adap); in omap_i2c_xfer_msg() local
661 dev_dbg(omap->dev, "addr: 0x%04x, len: %d, flags: 0x%x, stop: %d\n", in omap_i2c_xfer_msg()
664 omap->receiver = !!(msg->flags & I2C_M_RD); in omap_i2c_xfer_msg()
665 omap_i2c_resize_fifo(omap, msg->len, omap->receiver); in omap_i2c_xfer_msg()
667 omap_i2c_write_reg(omap, OMAP_I2C_SA_REG, msg->addr); in omap_i2c_xfer_msg()
670 omap->buf = msg->buf; in omap_i2c_xfer_msg()
671 omap->buf_len = msg->len; in omap_i2c_xfer_msg()
673 /* make sure writes to omap->buf_len are ordered */ in omap_i2c_xfer_msg()
676 omap_i2c_write_reg(omap, OMAP_I2C_CNT_REG, omap->buf_len); in omap_i2c_xfer_msg()
679 w = omap_i2c_read_reg(omap, OMAP_I2C_BUF_REG); in omap_i2c_xfer_msg()
681 omap_i2c_write_reg(omap, OMAP_I2C_BUF_REG, w); in omap_i2c_xfer_msg()
683 reinit_completion(&omap->cmd_complete); in omap_i2c_xfer_msg()
684 omap->cmd_err = 0; in omap_i2c_xfer_msg()
689 if (omap->speed > 400) in omap_i2c_xfer_msg()
699 if (!omap->b_hw && stop) in omap_i2c_xfer_msg()
706 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, w); in omap_i2c_xfer_msg()
711 if (omap->b_hw && stop) { in omap_i2c_xfer_msg()
713 u16 con = omap_i2c_read_reg(omap, OMAP_I2C_CON_REG); in omap_i2c_xfer_msg()
715 con = omap_i2c_read_reg(omap, OMAP_I2C_CON_REG); in omap_i2c_xfer_msg()
719 dev_err(omap->dev, "controller timed out " in omap_i2c_xfer_msg()
728 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, w); in omap_i2c_xfer_msg()
735 timeout = wait_for_completion_timeout(&omap->cmd_complete, in omap_i2c_xfer_msg()
738 dev_err(omap->dev, "controller timed out\n"); in omap_i2c_xfer_msg()
739 omap_i2c_reset(omap); in omap_i2c_xfer_msg()
740 __omap_i2c_init(omap); in omap_i2c_xfer_msg()
744 if (likely(!omap->cmd_err)) in omap_i2c_xfer_msg()
748 if (omap->cmd_err & (OMAP_I2C_STAT_ROVR | OMAP_I2C_STAT_XUDF)) { in omap_i2c_xfer_msg()
749 omap_i2c_reset(omap); in omap_i2c_xfer_msg()
750 __omap_i2c_init(omap); in omap_i2c_xfer_msg()
754 if (omap->cmd_err & OMAP_I2C_STAT_AL) in omap_i2c_xfer_msg()
757 if (omap->cmd_err & OMAP_I2C_STAT_NACK) { in omap_i2c_xfer_msg()
761 w = omap_i2c_read_reg(omap, OMAP_I2C_CON_REG); in omap_i2c_xfer_msg()
763 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, w); in omap_i2c_xfer_msg()
777 struct omap_i2c_dev *omap = i2c_get_adapdata(adap); in omap_i2c_xfer() local
781 r = pm_runtime_get_sync(omap->dev); in omap_i2c_xfer()
785 r = omap_i2c_wait_for_bb_valid(omap); in omap_i2c_xfer()
789 r = omap_i2c_wait_for_bb(omap); in omap_i2c_xfer()
793 if (omap->set_mpu_wkup_lat != NULL) in omap_i2c_xfer()
794 omap->set_mpu_wkup_lat(omap->dev, omap->latency); in omap_i2c_xfer()
805 omap_i2c_wait_for_bb(omap); in omap_i2c_xfer()
807 if (omap->set_mpu_wkup_lat != NULL) in omap_i2c_xfer()
808 omap->set_mpu_wkup_lat(omap->dev, -1); in omap_i2c_xfer()
811 pm_runtime_mark_last_busy(omap->dev); in omap_i2c_xfer()
812 pm_runtime_put_autosuspend(omap->dev); in omap_i2c_xfer()
824 omap_i2c_complete_cmd(struct omap_i2c_dev *omap, u16 err) in omap_i2c_complete_cmd() argument
826 omap->cmd_err |= err; in omap_i2c_complete_cmd()
827 complete(&omap->cmd_complete); in omap_i2c_complete_cmd()
831 omap_i2c_ack_stat(struct omap_i2c_dev *omap, u16 stat) in omap_i2c_ack_stat() argument
833 omap_i2c_write_reg(omap, OMAP_I2C_STAT_REG, stat); in omap_i2c_ack_stat()
836 static inline void i2c_omap_errata_i207(struct omap_i2c_dev *omap, u16 stat) in i2c_omap_errata_i207() argument
847 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_RDR); in i2c_omap_errata_i207()
850 if (!(omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG) in i2c_omap_errata_i207()
854 if (omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG) in i2c_omap_errata_i207()
856 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_RDR); in i2c_omap_errata_i207()
857 dev_dbg(omap->dev, "RDR when bus is busy.\n"); in i2c_omap_errata_i207()
870 struct omap_i2c_dev *omap = dev_id; in omap_i2c_omap1_isr() local
873 if (pm_runtime_suspended(omap->dev)) in omap_i2c_omap1_isr()
876 iv = omap_i2c_read_reg(omap, OMAP_I2C_IV_REG); in omap_i2c_omap1_isr()
881 dev_err(omap->dev, "Arbitration lost\n"); in omap_i2c_omap1_isr()
882 omap_i2c_complete_cmd(omap, OMAP_I2C_STAT_AL); in omap_i2c_omap1_isr()
885 omap_i2c_complete_cmd(omap, OMAP_I2C_STAT_NACK); in omap_i2c_omap1_isr()
886 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, OMAP_I2C_CON_STP); in omap_i2c_omap1_isr()
889 omap_i2c_complete_cmd(omap, 0); in omap_i2c_omap1_isr()
892 if (omap->buf_len) { in omap_i2c_omap1_isr()
893 w = omap_i2c_read_reg(omap, OMAP_I2C_DATA_REG); in omap_i2c_omap1_isr()
894 *omap->buf++ = w; in omap_i2c_omap1_isr()
895 omap->buf_len--; in omap_i2c_omap1_isr()
896 if (omap->buf_len) { in omap_i2c_omap1_isr()
897 *omap->buf++ = w >> 8; in omap_i2c_omap1_isr()
898 omap->buf_len--; in omap_i2c_omap1_isr()
901 dev_err(omap->dev, "RRDY IRQ while no data requested\n"); in omap_i2c_omap1_isr()
904 if (omap->buf_len) { in omap_i2c_omap1_isr()
905 w = *omap->buf++; in omap_i2c_omap1_isr()
906 omap->buf_len--; in omap_i2c_omap1_isr()
907 if (omap->buf_len) { in omap_i2c_omap1_isr()
908 w |= *omap->buf++ << 8; in omap_i2c_omap1_isr()
909 omap->buf_len--; in omap_i2c_omap1_isr()
911 omap_i2c_write_reg(omap, OMAP_I2C_DATA_REG, w); in omap_i2c_omap1_isr()
913 dev_err(omap->dev, "XRDY IRQ while no data to send\n"); in omap_i2c_omap1_isr()
930 static int errata_omap3_i462(struct omap_i2c_dev *omap) in errata_omap3_i462() argument
936 stat = omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG); in errata_omap3_i462()
941 omap_i2c_ack_stat(omap, (OMAP_I2C_STAT_XRDY | in errata_omap3_i462()
944 omap->cmd_err |= OMAP_I2C_STAT_NACK; in errata_omap3_i462()
945 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_NACK); in errata_omap3_i462()
949 dev_err(omap->dev, "Arbitration lost\n"); in errata_omap3_i462()
950 omap->cmd_err |= OMAP_I2C_STAT_AL; in errata_omap3_i462()
951 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_AL); in errata_omap3_i462()
961 dev_err(omap->dev, "timeout waiting on XUDF bit\n"); in errata_omap3_i462()
968 static void omap_i2c_receive_data(struct omap_i2c_dev *omap, u8 num_bytes, in omap_i2c_receive_data() argument
974 w = omap_i2c_read_reg(omap, OMAP_I2C_DATA_REG); in omap_i2c_receive_data()
975 *omap->buf++ = w; in omap_i2c_receive_data()
976 omap->buf_len--; in omap_i2c_receive_data()
982 if (omap->flags & OMAP_I2C_FLAG_16BIT_DATA_REG) { in omap_i2c_receive_data()
983 *omap->buf++ = w >> 8; in omap_i2c_receive_data()
984 omap->buf_len--; in omap_i2c_receive_data()
989 static int omap_i2c_transmit_data(struct omap_i2c_dev *omap, u8 num_bytes, in omap_i2c_transmit_data() argument
995 w = *omap->buf++; in omap_i2c_transmit_data()
996 omap->buf_len--; in omap_i2c_transmit_data()
1002 if (omap->flags & OMAP_I2C_FLAG_16BIT_DATA_REG) { in omap_i2c_transmit_data()
1003 w |= *omap->buf++ << 8; in omap_i2c_transmit_data()
1004 omap->buf_len--; in omap_i2c_transmit_data()
1007 if (omap->errata & I2C_OMAP_ERRATA_I462) { in omap_i2c_transmit_data()
1010 ret = errata_omap3_i462(omap); in omap_i2c_transmit_data()
1015 omap_i2c_write_reg(omap, OMAP_I2C_DATA_REG, w); in omap_i2c_transmit_data()
1024 struct omap_i2c_dev *omap = dev_id; in omap_i2c_isr() local
1029 stat = omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG); in omap_i2c_isr()
1030 mask = omap_i2c_read_reg(omap, OMAP_I2C_IE_REG); in omap_i2c_isr()
1041 struct omap_i2c_dev *omap = dev_id; in omap_i2c_isr_thread() local
1047 bits = omap_i2c_read_reg(omap, OMAP_I2C_IE_REG); in omap_i2c_isr_thread()
1048 stat = omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG); in omap_i2c_isr_thread()
1052 if (omap->receiver) in omap_i2c_isr_thread()
1062 dev_dbg(omap->dev, "IRQ (ISR = 0x%04x)\n", stat); in omap_i2c_isr_thread()
1064 dev_warn(omap->dev, "Too much work in one IRQ\n"); in omap_i2c_isr_thread()
1070 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_NACK); in omap_i2c_isr_thread()
1074 dev_err(omap->dev, "Arbitration lost\n"); in omap_i2c_isr_thread()
1076 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_AL); in omap_i2c_isr_thread()
1083 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_ARDY); in omap_i2c_isr_thread()
1087 omap_i2c_ack_stat(omap, (OMAP_I2C_STAT_RRDY | in omap_i2c_isr_thread()
1098 if (omap->fifo_size) in omap_i2c_isr_thread()
1099 num_bytes = omap->buf_len; in omap_i2c_isr_thread()
1101 if (omap->errata & I2C_OMAP_ERRATA_I207) { in omap_i2c_isr_thread()
1102 i2c_omap_errata_i207(omap, stat); in omap_i2c_isr_thread()
1103 num_bytes = (omap_i2c_read_reg(omap, in omap_i2c_isr_thread()
1107 omap_i2c_receive_data(omap, num_bytes, true); in omap_i2c_isr_thread()
1108 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_RDR); in omap_i2c_isr_thread()
1115 if (omap->threshold) in omap_i2c_isr_thread()
1116 num_bytes = omap->threshold; in omap_i2c_isr_thread()
1118 omap_i2c_receive_data(omap, num_bytes, false); in omap_i2c_isr_thread()
1119 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_RRDY); in omap_i2c_isr_thread()
1127 if (omap->fifo_size) in omap_i2c_isr_thread()
1128 num_bytes = omap->buf_len; in omap_i2c_isr_thread()
1130 ret = omap_i2c_transmit_data(omap, num_bytes, true); in omap_i2c_isr_thread()
1134 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_XDR); in omap_i2c_isr_thread()
1142 if (omap->threshold) in omap_i2c_isr_thread()
1143 num_bytes = omap->threshold; in omap_i2c_isr_thread()
1145 ret = omap_i2c_transmit_data(omap, num_bytes, false); in omap_i2c_isr_thread()
1149 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_XRDY); in omap_i2c_isr_thread()
1154 dev_err(omap->dev, "Receive overrun\n"); in omap_i2c_isr_thread()
1156 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_ROVR); in omap_i2c_isr_thread()
1161 dev_err(omap->dev, "Transmit underflow\n"); in omap_i2c_isr_thread()
1163 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_XUDF); in omap_i2c_isr_thread()
1168 omap_i2c_complete_cmd(omap, err); in omap_i2c_isr_thread()
1315 struct omap_i2c_dev *omap; in omap_i2c_probe() local
1333 omap = devm_kzalloc(&pdev->dev, sizeof(struct omap_i2c_dev), GFP_KERNEL); in omap_i2c_probe()
1334 if (!omap) in omap_i2c_probe()
1338 omap->base = devm_ioremap_resource(&pdev->dev, mem); in omap_i2c_probe()
1339 if (IS_ERR(omap->base)) in omap_i2c_probe()
1340 return PTR_ERR(omap->base); in omap_i2c_probe()
1347 omap->flags = pdata->flags; in omap_i2c_probe()
1351 omap->speed = freq / 1000; in omap_i2c_probe()
1353 omap->speed = pdata->clkrate; in omap_i2c_probe()
1354 omap->flags = pdata->flags; in omap_i2c_probe()
1355 omap->set_mpu_wkup_lat = pdata->set_mpu_wkup_lat; in omap_i2c_probe()
1358 omap->dev = &pdev->dev; in omap_i2c_probe()
1359 omap->irq = irq; in omap_i2c_probe()
1361 platform_set_drvdata(pdev, omap); in omap_i2c_probe()
1362 init_completion(&omap->cmd_complete); in omap_i2c_probe()
1364 omap->reg_shift = (omap->flags >> OMAP_I2C_FLAG_BUS_SHIFT__SHIFT) & 3; in omap_i2c_probe()
1366 pm_runtime_enable(omap->dev); in omap_i2c_probe()
1367 pm_runtime_set_autosuspend_delay(omap->dev, OMAP_I2C_PM_TIMEOUT); in omap_i2c_probe()
1368 pm_runtime_use_autosuspend(omap->dev); in omap_i2c_probe()
1370 r = pm_runtime_get_sync(omap->dev); in omap_i2c_probe()
1380 rev = readw_relaxed(omap->base + 0x04); in omap_i2c_probe()
1382 omap->scheme = OMAP_I2C_SCHEME(rev); in omap_i2c_probe()
1383 switch (omap->scheme) { in omap_i2c_probe()
1385 omap->regs = (u8 *)reg_map_ip_v1; in omap_i2c_probe()
1386 omap->rev = omap_i2c_read_reg(omap, OMAP_I2C_REV_REG); in omap_i2c_probe()
1387 minor = OMAP_I2C_REV_SCHEME_0_MAJOR(omap->rev); in omap_i2c_probe()
1388 major = OMAP_I2C_REV_SCHEME_0_MAJOR(omap->rev); in omap_i2c_probe()
1393 omap->regs = (u8 *)reg_map_ip_v2; in omap_i2c_probe()
1395 omap_i2c_read_reg(omap, OMAP_I2C_IP_V2_REVNB_LO); in omap_i2c_probe()
1398 omap->rev = rev; in omap_i2c_probe()
1401 omap->errata = 0; in omap_i2c_probe()
1403 if (omap->rev >= OMAP_I2C_REV_ON_2430 && in omap_i2c_probe()
1404 omap->rev < OMAP_I2C_REV_ON_4430_PLUS) in omap_i2c_probe()
1405 omap->errata |= I2C_OMAP_ERRATA_I207; in omap_i2c_probe()
1407 if (omap->rev <= OMAP_I2C_REV_ON_3430_3530) in omap_i2c_probe()
1408 omap->errata |= I2C_OMAP_ERRATA_I462; in omap_i2c_probe()
1410 if (!(omap->flags & OMAP_I2C_FLAG_NO_FIFO)) { in omap_i2c_probe()
1414 s = (omap_i2c_read_reg(omap, OMAP_I2C_BUFSTAT_REG) >> 14) & 0x3; in omap_i2c_probe()
1415 omap->fifo_size = 0x8 << s; in omap_i2c_probe()
1423 omap->fifo_size = (omap->fifo_size / 2); in omap_i2c_probe()
1425 if (omap->rev < OMAP_I2C_REV_ON_3630) in omap_i2c_probe()
1426 omap->b_hw = 1; /* Enable hardware fixes */ in omap_i2c_probe()
1429 if (omap->set_mpu_wkup_lat != NULL) in omap_i2c_probe()
1430 omap->latency = (1000000 * omap->fifo_size) / in omap_i2c_probe()
1431 (1000 * omap->speed / 8); in omap_i2c_probe()
1435 omap_i2c_init(omap); in omap_i2c_probe()
1437 if (omap->rev < OMAP_I2C_OMAP1_REV_2) in omap_i2c_probe()
1438 r = devm_request_irq(&pdev->dev, omap->irq, omap_i2c_omap1_isr, in omap_i2c_probe()
1439 IRQF_NO_SUSPEND, pdev->name, omap); in omap_i2c_probe()
1441 r = devm_request_threaded_irq(&pdev->dev, omap->irq, in omap_i2c_probe()
1444 pdev->name, omap); in omap_i2c_probe()
1447 dev_err(omap->dev, "failure requesting irq %i\n", omap->irq); in omap_i2c_probe()
1451 adap = &omap->adapter; in omap_i2c_probe()
1452 i2c_set_adapdata(adap, omap); in omap_i2c_probe()
1455 strlcpy(adap->name, "OMAP I2C adapter", sizeof(adap->name)); in omap_i2c_probe()
1468 dev_info(omap->dev, "bus %d rev%d.%d at %d kHz\n", adap->nr, in omap_i2c_probe()
1469 major, minor, omap->speed); in omap_i2c_probe()
1471 pm_runtime_mark_last_busy(omap->dev); in omap_i2c_probe()
1472 pm_runtime_put_autosuspend(omap->dev); in omap_i2c_probe()
1477 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, 0); in omap_i2c_probe()
1478 pm_runtime_dont_use_autosuspend(omap->dev); in omap_i2c_probe()
1479 pm_runtime_put_sync(omap->dev); in omap_i2c_probe()
1488 struct omap_i2c_dev *omap = platform_get_drvdata(pdev); in omap_i2c_remove() local
1491 i2c_del_adapter(&omap->adapter); in omap_i2c_remove()
1496 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, 0); in omap_i2c_remove()
1505 struct omap_i2c_dev *omap = dev_get_drvdata(dev); in omap_i2c_runtime_suspend() local
1507 omap->iestate = omap_i2c_read_reg(omap, OMAP_I2C_IE_REG); in omap_i2c_runtime_suspend()
1509 if (omap->scheme == OMAP_I2C_SCHEME_0) in omap_i2c_runtime_suspend()
1510 omap_i2c_write_reg(omap, OMAP_I2C_IE_REG, 0); in omap_i2c_runtime_suspend()
1512 omap_i2c_write_reg(omap, OMAP_I2C_IP_V2_IRQENABLE_CLR, in omap_i2c_runtime_suspend()
1515 if (omap->rev < OMAP_I2C_OMAP1_REV_2) { in omap_i2c_runtime_suspend()
1516 omap_i2c_read_reg(omap, OMAP_I2C_IV_REG); /* Read clears */ in omap_i2c_runtime_suspend()
1518 omap_i2c_write_reg(omap, OMAP_I2C_STAT_REG, omap->iestate); in omap_i2c_runtime_suspend()
1521 omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG); in omap_i2c_runtime_suspend()
1531 struct omap_i2c_dev *omap = dev_get_drvdata(dev); in omap_i2c_runtime_resume() local
1535 if (!omap->regs) in omap_i2c_runtime_resume()
1538 __omap_i2c_init(omap); in omap_i2c_runtime_resume()
1575 MODULE_DESCRIPTION("TI OMAP I2C bus adapter");