Lines Matching refs:omap
263 static int omap_i2c_xfer_data(struct omap_i2c_dev *omap);
265 static inline void omap_i2c_write_reg(struct omap_i2c_dev *omap, in omap_i2c_write_reg() argument
268 writew_relaxed(val, omap->base + in omap_i2c_write_reg()
269 (omap->regs[reg] << omap->reg_shift)); in omap_i2c_write_reg()
272 static inline u16 omap_i2c_read_reg(struct omap_i2c_dev *omap, int reg) in omap_i2c_read_reg() argument
274 return readw_relaxed(omap->base + in omap_i2c_read_reg()
275 (omap->regs[reg] << omap->reg_shift)); in omap_i2c_read_reg()
278 static void __omap_i2c_init(struct omap_i2c_dev *omap) in __omap_i2c_init() argument
281 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, 0); in __omap_i2c_init()
284 omap_i2c_write_reg(omap, OMAP_I2C_PSC_REG, omap->pscstate); in __omap_i2c_init()
287 omap_i2c_write_reg(omap, OMAP_I2C_SCLL_REG, omap->scllstate); in __omap_i2c_init()
288 omap_i2c_write_reg(omap, OMAP_I2C_SCLH_REG, omap->sclhstate); in __omap_i2c_init()
289 if (omap->rev >= OMAP_I2C_REV_ON_3430_3530) in __omap_i2c_init()
290 omap_i2c_write_reg(omap, OMAP_I2C_WE_REG, omap->westate); in __omap_i2c_init()
293 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, OMAP_I2C_CON_EN); in __omap_i2c_init()
305 if (omap->iestate) in __omap_i2c_init()
306 omap_i2c_write_reg(omap, OMAP_I2C_IE_REG, omap->iestate); in __omap_i2c_init()
309 static int omap_i2c_reset(struct omap_i2c_dev *omap) in omap_i2c_reset() argument
314 if (omap->rev >= OMAP_I2C_OMAP1_REV_2) { in omap_i2c_reset()
315 sysc = omap_i2c_read_reg(omap, OMAP_I2C_SYSC_REG); in omap_i2c_reset()
318 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, in omap_i2c_reset()
319 omap_i2c_read_reg(omap, OMAP_I2C_CON_REG) & in omap_i2c_reset()
322 omap_i2c_write_reg(omap, OMAP_I2C_SYSC_REG, SYSC_SOFTRESET_MASK); in omap_i2c_reset()
326 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, OMAP_I2C_CON_EN); in omap_i2c_reset()
327 while (!(omap_i2c_read_reg(omap, OMAP_I2C_SYSS_REG) & in omap_i2c_reset()
330 dev_warn(omap->dev, "timeout waiting " in omap_i2c_reset()
338 omap_i2c_write_reg(omap, OMAP_I2C_SYSC_REG, sysc); in omap_i2c_reset()
340 if (omap->rev > OMAP_I2C_REV_ON_3430_3530) { in omap_i2c_reset()
342 omap->bb_valid = 0; in omap_i2c_reset()
349 static int omap_i2c_init(struct omap_i2c_dev *omap) in omap_i2c_init() argument
358 if (omap->rev >= OMAP_I2C_REV_ON_3430_3530) { in omap_i2c_init()
364 omap->westate = OMAP_I2C_WE_ALL; in omap_i2c_init()
367 if (omap->flags & OMAP_I2C_FLAG_ALWAYS_ARMXOR_CLK) { in omap_i2c_init()
374 fclk = clk_get(omap->dev, "fck"); in omap_i2c_init()
377 dev_err(omap->dev, "could not get fck: %i\n", error); in omap_i2c_init()
398 if (!(omap->flags & OMAP_I2C_FLAG_SIMPLE_CLOCK)) { in omap_i2c_init()
406 if (omap->speed > 400 || in omap_i2c_init()
407 omap->flags & OMAP_I2C_FLAG_FORCE_19200_INT_CLK) in omap_i2c_init()
409 else if (omap->speed > 100) in omap_i2c_init()
413 fclk = clk_get(omap->dev, "fck"); in omap_i2c_init()
416 dev_err(omap->dev, "could not get fck: %i\n", error); in omap_i2c_init()
428 if (omap->speed > 400) { in omap_i2c_init()
437 scl = fclk_rate / omap->speed; in omap_i2c_init()
440 } else if (omap->speed > 100) { in omap_i2c_init()
444 scl = internal_clk / omap->speed; in omap_i2c_init()
449 fsscll = internal_clk / (omap->speed * 2) - 7; in omap_i2c_init()
450 fssclh = internal_clk / (omap->speed * 2) - 5; in omap_i2c_init()
459 scll = fclk_rate / (omap->speed * 2) - 7 + psc; in omap_i2c_init()
460 sclh = fclk_rate / (omap->speed * 2) - 7 + psc; in omap_i2c_init()
463 omap->iestate = (OMAP_I2C_IE_XRDY | OMAP_I2C_IE_RRDY | in omap_i2c_init()
465 OMAP_I2C_IE_AL) | ((omap->fifo_size) ? in omap_i2c_init()
468 omap->pscstate = psc; in omap_i2c_init()
469 omap->scllstate = scll; in omap_i2c_init()
470 omap->sclhstate = sclh; in omap_i2c_init()
472 if (omap->rev <= OMAP_I2C_REV_ON_3430_3530) { in omap_i2c_init()
474 omap->bb_valid = 1; in omap_i2c_init()
477 __omap_i2c_init(omap); in omap_i2c_init()
485 static int omap_i2c_recover_bus(struct omap_i2c_dev *omap) in omap_i2c_recover_bus() argument
489 systest = omap_i2c_read_reg(omap, OMAP_I2C_SYSTEST_REG); in omap_i2c_recover_bus()
495 return i2c_recover_bus(&omap->adapter); in omap_i2c_recover_bus()
501 static int omap_i2c_wait_for_bb(struct omap_i2c_dev *omap) in omap_i2c_wait_for_bb() argument
506 while (omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG) & OMAP_I2C_STAT_BB) { in omap_i2c_wait_for_bb()
508 return omap_i2c_recover_bus(omap); in omap_i2c_wait_for_bb()
543 static int omap_i2c_wait_for_bb_valid(struct omap_i2c_dev *omap) in omap_i2c_wait_for_bb_valid() argument
550 if (omap->bb_valid) in omap_i2c_wait_for_bb_valid()
555 stat = omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG); in omap_i2c_wait_for_bb_valid()
568 systest = omap_i2c_read_reg(omap, OMAP_I2C_SYSTEST_REG); in omap_i2c_wait_for_bb_valid()
594 dev_warn(omap->dev, "timeout waiting for bus ready\n"); in omap_i2c_wait_for_bb_valid()
595 return omap_i2c_recover_bus(omap); in omap_i2c_wait_for_bb_valid()
601 omap->bb_valid = 1; in omap_i2c_wait_for_bb_valid()
605 static void omap_i2c_resize_fifo(struct omap_i2c_dev *omap, u8 size, bool is_rx) in omap_i2c_resize_fifo() argument
609 if (omap->flags & OMAP_I2C_FLAG_NO_FIFO) in omap_i2c_resize_fifo()
619 omap->threshold = clamp(size, (u8) 1, omap->fifo_size); in omap_i2c_resize_fifo()
621 buf = omap_i2c_read_reg(omap, OMAP_I2C_BUF_REG); in omap_i2c_resize_fifo()
626 buf |= ((omap->threshold - 1) << 8) | OMAP_I2C_BUF_RXFIF_CLR; in omap_i2c_resize_fifo()
630 buf |= (omap->threshold - 1) | OMAP_I2C_BUF_TXFIF_CLR; in omap_i2c_resize_fifo()
633 omap_i2c_write_reg(omap, OMAP_I2C_BUF_REG, buf); in omap_i2c_resize_fifo()
635 if (omap->rev < OMAP_I2C_REV_ON_3630) in omap_i2c_resize_fifo()
636 omap->b_hw = 1; /* Enable hardware fixes */ in omap_i2c_resize_fifo()
639 if (omap->set_mpu_wkup_lat != NULL) in omap_i2c_resize_fifo()
640 omap->latency = (1000000 * omap->threshold) / in omap_i2c_resize_fifo()
641 (1000 * omap->speed / 8); in omap_i2c_resize_fifo()
644 static void omap_i2c_wait(struct omap_i2c_dev *omap) in omap_i2c_wait() argument
647 u16 mask = omap_i2c_read_reg(omap, OMAP_I2C_IE_REG); in omap_i2c_wait()
651 stat = omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG); in omap_i2c_wait()
662 struct omap_i2c_dev *omap = i2c_get_adapdata(adap); in omap_i2c_xfer_msg() local
667 dev_dbg(omap->dev, "addr: 0x%04x, len: %d, flags: 0x%x, stop: %d\n", in omap_i2c_xfer_msg()
670 omap->receiver = !!(msg->flags & I2C_M_RD); in omap_i2c_xfer_msg()
671 omap_i2c_resize_fifo(omap, msg->len, omap->receiver); in omap_i2c_xfer_msg()
673 omap_i2c_write_reg(omap, OMAP_I2C_SA_REG, msg->addr); in omap_i2c_xfer_msg()
676 omap->buf = msg->buf; in omap_i2c_xfer_msg()
677 omap->buf_len = msg->len; in omap_i2c_xfer_msg()
682 omap_i2c_write_reg(omap, OMAP_I2C_CNT_REG, omap->buf_len); in omap_i2c_xfer_msg()
685 w = omap_i2c_read_reg(omap, OMAP_I2C_BUF_REG); in omap_i2c_xfer_msg()
687 omap_i2c_write_reg(omap, OMAP_I2C_BUF_REG, w); in omap_i2c_xfer_msg()
690 reinit_completion(&omap->cmd_complete); in omap_i2c_xfer_msg()
691 omap->cmd_err = 0; in omap_i2c_xfer_msg()
696 if (omap->speed > 400) in omap_i2c_xfer_msg()
706 if (!omap->b_hw && stop) in omap_i2c_xfer_msg()
713 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, w); in omap_i2c_xfer_msg()
718 if (omap->b_hw && stop) { in omap_i2c_xfer_msg()
720 u16 con = omap_i2c_read_reg(omap, OMAP_I2C_CON_REG); in omap_i2c_xfer_msg()
722 con = omap_i2c_read_reg(omap, OMAP_I2C_CON_REG); in omap_i2c_xfer_msg()
726 dev_err(omap->dev, "controller timed out " in omap_i2c_xfer_msg()
735 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, w); in omap_i2c_xfer_msg()
743 timeout = wait_for_completion_timeout(&omap->cmd_complete, in omap_i2c_xfer_msg()
747 omap_i2c_wait(omap); in omap_i2c_xfer_msg()
748 ret = omap_i2c_xfer_data(omap); in omap_i2c_xfer_msg()
755 dev_err(omap->dev, "controller timed out\n"); in omap_i2c_xfer_msg()
756 omap_i2c_reset(omap); in omap_i2c_xfer_msg()
757 __omap_i2c_init(omap); in omap_i2c_xfer_msg()
761 if (likely(!omap->cmd_err)) in omap_i2c_xfer_msg()
765 if (omap->cmd_err & (OMAP_I2C_STAT_ROVR | OMAP_I2C_STAT_XUDF)) { in omap_i2c_xfer_msg()
766 omap_i2c_reset(omap); in omap_i2c_xfer_msg()
767 __omap_i2c_init(omap); in omap_i2c_xfer_msg()
771 if (omap->cmd_err & OMAP_I2C_STAT_AL) in omap_i2c_xfer_msg()
774 if (omap->cmd_err & OMAP_I2C_STAT_NACK) { in omap_i2c_xfer_msg()
778 w = omap_i2c_read_reg(omap, OMAP_I2C_CON_REG); in omap_i2c_xfer_msg()
780 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, w); in omap_i2c_xfer_msg()
795 struct omap_i2c_dev *omap = i2c_get_adapdata(adap); in omap_i2c_xfer_common() local
799 r = pm_runtime_get_sync(omap->dev); in omap_i2c_xfer_common()
803 r = omap_i2c_wait_for_bb_valid(omap); in omap_i2c_xfer_common()
807 r = omap_i2c_wait_for_bb(omap); in omap_i2c_xfer_common()
811 if (omap->set_mpu_wkup_lat != NULL) in omap_i2c_xfer_common()
812 omap->set_mpu_wkup_lat(omap->dev, omap->latency); in omap_i2c_xfer_common()
824 omap_i2c_wait_for_bb(omap); in omap_i2c_xfer_common()
826 if (omap->set_mpu_wkup_lat != NULL) in omap_i2c_xfer_common()
827 omap->set_mpu_wkup_lat(omap->dev, -1); in omap_i2c_xfer_common()
830 pm_runtime_mark_last_busy(omap->dev); in omap_i2c_xfer_common()
831 pm_runtime_put_autosuspend(omap->dev); in omap_i2c_xfer_common()
855 omap_i2c_complete_cmd(struct omap_i2c_dev *omap, u16 err) in omap_i2c_complete_cmd() argument
857 omap->cmd_err |= err; in omap_i2c_complete_cmd()
858 complete(&omap->cmd_complete); in omap_i2c_complete_cmd()
862 omap_i2c_ack_stat(struct omap_i2c_dev *omap, u16 stat) in omap_i2c_ack_stat() argument
864 omap_i2c_write_reg(omap, OMAP_I2C_STAT_REG, stat); in omap_i2c_ack_stat()
867 static inline void i2c_omap_errata_i207(struct omap_i2c_dev *omap, u16 stat) in i2c_omap_errata_i207() argument
878 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_RDR); in i2c_omap_errata_i207()
881 if (!(omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG) in i2c_omap_errata_i207()
885 if (omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG) in i2c_omap_errata_i207()
887 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_RDR); in i2c_omap_errata_i207()
888 dev_dbg(omap->dev, "RDR when bus is busy.\n"); in i2c_omap_errata_i207()
901 struct omap_i2c_dev *omap = dev_id; in omap_i2c_omap1_isr() local
904 if (pm_runtime_suspended(omap->dev)) in omap_i2c_omap1_isr()
907 iv = omap_i2c_read_reg(omap, OMAP_I2C_IV_REG); in omap_i2c_omap1_isr()
912 dev_err(omap->dev, "Arbitration lost\n"); in omap_i2c_omap1_isr()
913 omap_i2c_complete_cmd(omap, OMAP_I2C_STAT_AL); in omap_i2c_omap1_isr()
916 omap_i2c_complete_cmd(omap, OMAP_I2C_STAT_NACK); in omap_i2c_omap1_isr()
917 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, OMAP_I2C_CON_STP); in omap_i2c_omap1_isr()
920 omap_i2c_complete_cmd(omap, 0); in omap_i2c_omap1_isr()
923 if (omap->buf_len) { in omap_i2c_omap1_isr()
924 w = omap_i2c_read_reg(omap, OMAP_I2C_DATA_REG); in omap_i2c_omap1_isr()
925 *omap->buf++ = w; in omap_i2c_omap1_isr()
926 omap->buf_len--; in omap_i2c_omap1_isr()
927 if (omap->buf_len) { in omap_i2c_omap1_isr()
928 *omap->buf++ = w >> 8; in omap_i2c_omap1_isr()
929 omap->buf_len--; in omap_i2c_omap1_isr()
932 dev_err(omap->dev, "RRDY IRQ while no data requested\n"); in omap_i2c_omap1_isr()
935 if (omap->buf_len) { in omap_i2c_omap1_isr()
936 w = *omap->buf++; in omap_i2c_omap1_isr()
937 omap->buf_len--; in omap_i2c_omap1_isr()
938 if (omap->buf_len) { in omap_i2c_omap1_isr()
939 w |= *omap->buf++ << 8; in omap_i2c_omap1_isr()
940 omap->buf_len--; in omap_i2c_omap1_isr()
942 omap_i2c_write_reg(omap, OMAP_I2C_DATA_REG, w); in omap_i2c_omap1_isr()
944 dev_err(omap->dev, "XRDY IRQ while no data to send\n"); in omap_i2c_omap1_isr()
961 static int errata_omap3_i462(struct omap_i2c_dev *omap) in errata_omap3_i462() argument
967 stat = omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG); in errata_omap3_i462()
972 omap_i2c_ack_stat(omap, (OMAP_I2C_STAT_XRDY | in errata_omap3_i462()
975 omap->cmd_err |= OMAP_I2C_STAT_NACK; in errata_omap3_i462()
976 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_NACK); in errata_omap3_i462()
980 dev_err(omap->dev, "Arbitration lost\n"); in errata_omap3_i462()
981 omap->cmd_err |= OMAP_I2C_STAT_AL; in errata_omap3_i462()
982 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_AL); in errata_omap3_i462()
992 dev_err(omap->dev, "timeout waiting on XUDF bit\n"); in errata_omap3_i462()
999 static void omap_i2c_receive_data(struct omap_i2c_dev *omap, u8 num_bytes, in omap_i2c_receive_data() argument
1005 w = omap_i2c_read_reg(omap, OMAP_I2C_DATA_REG); in omap_i2c_receive_data()
1006 *omap->buf++ = w; in omap_i2c_receive_data()
1007 omap->buf_len--; in omap_i2c_receive_data()
1013 if (omap->flags & OMAP_I2C_FLAG_16BIT_DATA_REG) { in omap_i2c_receive_data()
1014 *omap->buf++ = w >> 8; in omap_i2c_receive_data()
1015 omap->buf_len--; in omap_i2c_receive_data()
1020 static int omap_i2c_transmit_data(struct omap_i2c_dev *omap, u8 num_bytes, in omap_i2c_transmit_data() argument
1026 w = *omap->buf++; in omap_i2c_transmit_data()
1027 omap->buf_len--; in omap_i2c_transmit_data()
1033 if (omap->flags & OMAP_I2C_FLAG_16BIT_DATA_REG) { in omap_i2c_transmit_data()
1034 w |= *omap->buf++ << 8; in omap_i2c_transmit_data()
1035 omap->buf_len--; in omap_i2c_transmit_data()
1038 if (omap->errata & I2C_OMAP_ERRATA_I462) { in omap_i2c_transmit_data()
1041 ret = errata_omap3_i462(omap); in omap_i2c_transmit_data()
1046 omap_i2c_write_reg(omap, OMAP_I2C_DATA_REG, w); in omap_i2c_transmit_data()
1055 struct omap_i2c_dev *omap = dev_id; in omap_i2c_isr() local
1060 stat = omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG); in omap_i2c_isr()
1061 mask = omap_i2c_read_reg(omap, OMAP_I2C_IE_REG); in omap_i2c_isr()
1069 static int omap_i2c_xfer_data(struct omap_i2c_dev *omap) in omap_i2c_xfer_data() argument
1076 bits = omap_i2c_read_reg(omap, OMAP_I2C_IE_REG); in omap_i2c_xfer_data()
1077 stat = omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG); in omap_i2c_xfer_data()
1081 if (omap->receiver) in omap_i2c_xfer_data()
1092 dev_dbg(omap->dev, "IRQ (ISR = 0x%04x)\n", stat); in omap_i2c_xfer_data()
1094 dev_warn(omap->dev, "Too much work in one IRQ\n"); in omap_i2c_xfer_data()
1100 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_NACK); in omap_i2c_xfer_data()
1104 dev_err(omap->dev, "Arbitration lost\n"); in omap_i2c_xfer_data()
1106 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_AL); in omap_i2c_xfer_data()
1113 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_ARDY); in omap_i2c_xfer_data()
1117 omap_i2c_ack_stat(omap, (OMAP_I2C_STAT_RRDY | in omap_i2c_xfer_data()
1128 if (omap->fifo_size) in omap_i2c_xfer_data()
1129 num_bytes = omap->buf_len; in omap_i2c_xfer_data()
1131 if (omap->errata & I2C_OMAP_ERRATA_I207) { in omap_i2c_xfer_data()
1132 i2c_omap_errata_i207(omap, stat); in omap_i2c_xfer_data()
1133 num_bytes = (omap_i2c_read_reg(omap, in omap_i2c_xfer_data()
1137 omap_i2c_receive_data(omap, num_bytes, true); in omap_i2c_xfer_data()
1138 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_RDR); in omap_i2c_xfer_data()
1145 if (omap->threshold) in omap_i2c_xfer_data()
1146 num_bytes = omap->threshold; in omap_i2c_xfer_data()
1148 omap_i2c_receive_data(omap, num_bytes, false); in omap_i2c_xfer_data()
1149 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_RRDY); in omap_i2c_xfer_data()
1157 if (omap->fifo_size) in omap_i2c_xfer_data()
1158 num_bytes = omap->buf_len; in omap_i2c_xfer_data()
1160 ret = omap_i2c_transmit_data(omap, num_bytes, true); in omap_i2c_xfer_data()
1164 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_XDR); in omap_i2c_xfer_data()
1172 if (omap->threshold) in omap_i2c_xfer_data()
1173 num_bytes = omap->threshold; in omap_i2c_xfer_data()
1175 ret = omap_i2c_transmit_data(omap, num_bytes, false); in omap_i2c_xfer_data()
1179 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_XRDY); in omap_i2c_xfer_data()
1184 dev_err(omap->dev, "Receive overrun\n"); in omap_i2c_xfer_data()
1186 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_ROVR); in omap_i2c_xfer_data()
1191 dev_err(omap->dev, "Transmit underflow\n"); in omap_i2c_xfer_data()
1193 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_XUDF); in omap_i2c_xfer_data()
1205 struct omap_i2c_dev *omap = dev_id; in omap_i2c_isr_thread() local
1207 ret = omap_i2c_xfer_data(omap); in omap_i2c_isr_thread()
1209 omap_i2c_complete_cmd(omap, ret); in omap_i2c_isr_thread()
1356 struct omap_i2c_dev *omap; in omap_i2c_probe() local
1371 omap = devm_kzalloc(&pdev->dev, sizeof(struct omap_i2c_dev), GFP_KERNEL); in omap_i2c_probe()
1372 if (!omap) in omap_i2c_probe()
1375 omap->base = devm_platform_ioremap_resource(pdev, 0); in omap_i2c_probe()
1376 if (IS_ERR(omap->base)) in omap_i2c_probe()
1377 return PTR_ERR(omap->base); in omap_i2c_probe()
1384 omap->flags = pdata->flags; in omap_i2c_probe()
1388 omap->speed = freq / 1000; in omap_i2c_probe()
1390 omap->speed = pdata->clkrate; in omap_i2c_probe()
1391 omap->flags = pdata->flags; in omap_i2c_probe()
1392 omap->set_mpu_wkup_lat = pdata->set_mpu_wkup_lat; in omap_i2c_probe()
1395 omap->dev = &pdev->dev; in omap_i2c_probe()
1396 omap->irq = irq; in omap_i2c_probe()
1398 platform_set_drvdata(pdev, omap); in omap_i2c_probe()
1399 init_completion(&omap->cmd_complete); in omap_i2c_probe()
1401 omap->reg_shift = (omap->flags >> OMAP_I2C_FLAG_BUS_SHIFT__SHIFT) & 3; in omap_i2c_probe()
1403 pm_runtime_enable(omap->dev); in omap_i2c_probe()
1404 pm_runtime_set_autosuspend_delay(omap->dev, OMAP_I2C_PM_TIMEOUT); in omap_i2c_probe()
1405 pm_runtime_use_autosuspend(omap->dev); in omap_i2c_probe()
1407 r = pm_runtime_resume_and_get(omap->dev); in omap_i2c_probe()
1417 rev = readw_relaxed(omap->base + 0x04); in omap_i2c_probe()
1419 omap->scheme = OMAP_I2C_SCHEME(rev); in omap_i2c_probe()
1420 switch (omap->scheme) { in omap_i2c_probe()
1422 omap->regs = (u8 *)reg_map_ip_v1; in omap_i2c_probe()
1423 omap->rev = omap_i2c_read_reg(omap, OMAP_I2C_REV_REG); in omap_i2c_probe()
1424 minor = OMAP_I2C_REV_SCHEME_0_MAJOR(omap->rev); in omap_i2c_probe()
1425 major = OMAP_I2C_REV_SCHEME_0_MAJOR(omap->rev); in omap_i2c_probe()
1429 omap->regs = (u8 *)reg_map_ip_v2; in omap_i2c_probe()
1431 omap_i2c_read_reg(omap, OMAP_I2C_IP_V2_REVNB_LO); in omap_i2c_probe()
1434 omap->rev = rev; in omap_i2c_probe()
1437 omap->errata = 0; in omap_i2c_probe()
1439 if (omap->rev >= OMAP_I2C_REV_ON_2430 && in omap_i2c_probe()
1440 omap->rev < OMAP_I2C_REV_ON_4430_PLUS) in omap_i2c_probe()
1441 omap->errata |= I2C_OMAP_ERRATA_I207; in omap_i2c_probe()
1443 if (omap->rev <= OMAP_I2C_REV_ON_3430_3530) in omap_i2c_probe()
1444 omap->errata |= I2C_OMAP_ERRATA_I462; in omap_i2c_probe()
1446 if (!(omap->flags & OMAP_I2C_FLAG_NO_FIFO)) { in omap_i2c_probe()
1450 s = (omap_i2c_read_reg(omap, OMAP_I2C_BUFSTAT_REG) >> 14) & 0x3; in omap_i2c_probe()
1451 omap->fifo_size = 0x8 << s; in omap_i2c_probe()
1459 omap->fifo_size = (omap->fifo_size / 2); in omap_i2c_probe()
1461 if (omap->rev < OMAP_I2C_REV_ON_3630) in omap_i2c_probe()
1462 omap->b_hw = 1; /* Enable hardware fixes */ in omap_i2c_probe()
1465 if (omap->set_mpu_wkup_lat != NULL) in omap_i2c_probe()
1466 omap->latency = (1000000 * omap->fifo_size) / in omap_i2c_probe()
1467 (1000 * omap->speed / 8); in omap_i2c_probe()
1471 omap_i2c_init(omap); in omap_i2c_probe()
1473 if (omap->rev < OMAP_I2C_OMAP1_REV_2) in omap_i2c_probe()
1474 r = devm_request_irq(&pdev->dev, omap->irq, omap_i2c_omap1_isr, in omap_i2c_probe()
1475 IRQF_NO_SUSPEND, pdev->name, omap); in omap_i2c_probe()
1477 r = devm_request_threaded_irq(&pdev->dev, omap->irq, in omap_i2c_probe()
1480 pdev->name, omap); in omap_i2c_probe()
1483 dev_err(omap->dev, "failure requesting irq %i\n", omap->irq); in omap_i2c_probe()
1487 adap = &omap->adapter; in omap_i2c_probe()
1488 i2c_set_adapdata(adap, omap); in omap_i2c_probe()
1504 dev_info(omap->dev, "bus %d rev%d.%d at %d kHz\n", adap->nr, in omap_i2c_probe()
1505 major, minor, omap->speed); in omap_i2c_probe()
1507 pm_runtime_mark_last_busy(omap->dev); in omap_i2c_probe()
1508 pm_runtime_put_autosuspend(omap->dev); in omap_i2c_probe()
1513 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, 0); in omap_i2c_probe()
1514 pm_runtime_dont_use_autosuspend(omap->dev); in omap_i2c_probe()
1515 pm_runtime_put_sync(omap->dev); in omap_i2c_probe()
1524 struct omap_i2c_dev *omap = platform_get_drvdata(pdev); in omap_i2c_remove() local
1527 i2c_del_adapter(&omap->adapter); in omap_i2c_remove()
1532 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, 0); in omap_i2c_remove()
1541 struct omap_i2c_dev *omap = dev_get_drvdata(dev); in omap_i2c_runtime_suspend() local
1543 omap->iestate = omap_i2c_read_reg(omap, OMAP_I2C_IE_REG); in omap_i2c_runtime_suspend()
1545 if (omap->scheme == OMAP_I2C_SCHEME_0) in omap_i2c_runtime_suspend()
1546 omap_i2c_write_reg(omap, OMAP_I2C_IE_REG, 0); in omap_i2c_runtime_suspend()
1548 omap_i2c_write_reg(omap, OMAP_I2C_IP_V2_IRQENABLE_CLR, in omap_i2c_runtime_suspend()
1551 if (omap->rev < OMAP_I2C_OMAP1_REV_2) { in omap_i2c_runtime_suspend()
1552 omap_i2c_read_reg(omap, OMAP_I2C_IV_REG); /* Read clears */ in omap_i2c_runtime_suspend()
1554 omap_i2c_write_reg(omap, OMAP_I2C_STAT_REG, omap->iestate); in omap_i2c_runtime_suspend()
1557 omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG); in omap_i2c_runtime_suspend()
1567 struct omap_i2c_dev *omap = dev_get_drvdata(dev); in omap_i2c_runtime_resume() local
1571 if (!omap->regs) in omap_i2c_runtime_resume()
1574 __omap_i2c_init(omap); in omap_i2c_runtime_resume()