Lines Matching full:omap
3 * TI OMAP I2C master mode driver
30 #include <linux/platform_data/i2c-omap.h>
265 static int omap_i2c_xfer_data(struct omap_i2c_dev *omap);
267 static inline void omap_i2c_write_reg(struct omap_i2c_dev *omap, in omap_i2c_write_reg() argument
270 writew_relaxed(val, omap->base + in omap_i2c_write_reg()
271 (omap->regs[reg] << omap->reg_shift)); in omap_i2c_write_reg()
274 static inline u16 omap_i2c_read_reg(struct omap_i2c_dev *omap, int reg) in omap_i2c_read_reg() argument
276 return readw_relaxed(omap->base + in omap_i2c_read_reg()
277 (omap->regs[reg] << omap->reg_shift)); in omap_i2c_read_reg()
280 static void __omap_i2c_init(struct omap_i2c_dev *omap) in __omap_i2c_init() argument
283 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, 0); in __omap_i2c_init()
286 omap_i2c_write_reg(omap, OMAP_I2C_PSC_REG, omap->pscstate); in __omap_i2c_init()
289 omap_i2c_write_reg(omap, OMAP_I2C_SCLL_REG, omap->scllstate); in __omap_i2c_init()
290 omap_i2c_write_reg(omap, OMAP_I2C_SCLH_REG, omap->sclhstate); in __omap_i2c_init()
291 if (omap->rev >= OMAP_I2C_REV_ON_3430_3530) in __omap_i2c_init()
292 omap_i2c_write_reg(omap, OMAP_I2C_WE_REG, omap->westate); in __omap_i2c_init()
295 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, OMAP_I2C_CON_EN); in __omap_i2c_init()
307 if (omap->iestate) in __omap_i2c_init()
308 omap_i2c_write_reg(omap, OMAP_I2C_IE_REG, omap->iestate); in __omap_i2c_init()
311 static int omap_i2c_reset(struct omap_i2c_dev *omap) in omap_i2c_reset() argument
316 if (omap->rev >= OMAP_I2C_OMAP1_REV_2) { in omap_i2c_reset()
317 sysc = omap_i2c_read_reg(omap, OMAP_I2C_SYSC_REG); in omap_i2c_reset()
320 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, in omap_i2c_reset()
321 omap_i2c_read_reg(omap, OMAP_I2C_CON_REG) & in omap_i2c_reset()
324 omap_i2c_write_reg(omap, OMAP_I2C_SYSC_REG, SYSC_SOFTRESET_MASK); in omap_i2c_reset()
328 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, OMAP_I2C_CON_EN); in omap_i2c_reset()
329 while (!(omap_i2c_read_reg(omap, OMAP_I2C_SYSS_REG) & in omap_i2c_reset()
332 dev_warn(omap->dev, "timeout waiting " in omap_i2c_reset()
340 omap_i2c_write_reg(omap, OMAP_I2C_SYSC_REG, sysc); in omap_i2c_reset()
342 if (omap->rev > OMAP_I2C_REV_ON_3430_3530) { in omap_i2c_reset()
344 omap->bb_valid = 0; in omap_i2c_reset()
351 static int omap_i2c_init(struct omap_i2c_dev *omap) in omap_i2c_init() argument
360 if (omap->rev >= OMAP_I2C_REV_ON_3430_3530) { in omap_i2c_init()
366 omap->westate = OMAP_I2C_WE_ALL; in omap_i2c_init()
369 if (omap->flags & OMAP_I2C_FLAG_ALWAYS_ARMXOR_CLK) { in omap_i2c_init()
376 fclk = clk_get(omap->dev, "fck"); in omap_i2c_init()
379 dev_err(omap->dev, "could not get fck: %i\n", error); in omap_i2c_init()
400 if (!(omap->flags & OMAP_I2C_FLAG_SIMPLE_CLOCK)) { in omap_i2c_init()
408 if (omap->speed > 400 || in omap_i2c_init()
409 omap->flags & OMAP_I2C_FLAG_FORCE_19200_INT_CLK) in omap_i2c_init()
411 else if (omap->speed > 100) in omap_i2c_init()
415 fclk = clk_get(omap->dev, "fck"); in omap_i2c_init()
418 dev_err(omap->dev, "could not get fck: %i\n", error); in omap_i2c_init()
430 if (omap->speed > 400) { in omap_i2c_init()
439 scl = fclk_rate / omap->speed; in omap_i2c_init()
442 } else if (omap->speed > 100) { in omap_i2c_init()
446 scl = internal_clk / omap->speed; in omap_i2c_init()
451 fsscll = internal_clk / (omap->speed * 2) - 7; in omap_i2c_init()
452 fssclh = internal_clk / (omap->speed * 2) - 5; in omap_i2c_init()
461 scll = fclk_rate / (omap->speed * 2) - 7 + psc; in omap_i2c_init()
462 sclh = fclk_rate / (omap->speed * 2) - 7 + psc; in omap_i2c_init()
465 omap->iestate = (OMAP_I2C_IE_XRDY | OMAP_I2C_IE_RRDY | in omap_i2c_init()
467 OMAP_I2C_IE_AL) | ((omap->fifo_size) ? in omap_i2c_init()
470 omap->pscstate = psc; in omap_i2c_init()
471 omap->scllstate = scll; in omap_i2c_init()
472 omap->sclhstate = sclh; in omap_i2c_init()
474 if (omap->rev <= OMAP_I2C_REV_ON_3430_3530) { in omap_i2c_init()
476 omap->bb_valid = 1; in omap_i2c_init()
479 __omap_i2c_init(omap); in omap_i2c_init()
487 static int omap_i2c_recover_bus(struct omap_i2c_dev *omap) in omap_i2c_recover_bus() argument
491 systest = omap_i2c_read_reg(omap, OMAP_I2C_SYSTEST_REG); in omap_i2c_recover_bus()
497 return i2c_recover_bus(&omap->adapter); in omap_i2c_recover_bus()
503 static int omap_i2c_wait_for_bb(struct omap_i2c_dev *omap) in omap_i2c_wait_for_bb() argument
508 while (omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG) & OMAP_I2C_STAT_BB) { in omap_i2c_wait_for_bb()
510 return omap_i2c_recover_bus(omap); in omap_i2c_wait_for_bb()
545 static int omap_i2c_wait_for_bb_valid(struct omap_i2c_dev *omap) in omap_i2c_wait_for_bb_valid() argument
552 if (omap->bb_valid) in omap_i2c_wait_for_bb_valid()
557 stat = omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG); in omap_i2c_wait_for_bb_valid()
570 systest = omap_i2c_read_reg(omap, OMAP_I2C_SYSTEST_REG); in omap_i2c_wait_for_bb_valid()
596 dev_warn(omap->dev, "timeout waiting for bus ready\n"); in omap_i2c_wait_for_bb_valid()
597 return omap_i2c_recover_bus(omap); in omap_i2c_wait_for_bb_valid()
603 omap->bb_valid = 1; in omap_i2c_wait_for_bb_valid()
607 static void omap_i2c_resize_fifo(struct omap_i2c_dev *omap, u8 size, bool is_rx) in omap_i2c_resize_fifo() argument
611 if (omap->flags & OMAP_I2C_FLAG_NO_FIFO) in omap_i2c_resize_fifo()
621 omap->threshold = clamp(size, (u8) 1, omap->fifo_size); in omap_i2c_resize_fifo()
623 buf = omap_i2c_read_reg(omap, OMAP_I2C_BUF_REG); in omap_i2c_resize_fifo()
628 buf |= ((omap->threshold - 1) << 8) | OMAP_I2C_BUF_RXFIF_CLR; in omap_i2c_resize_fifo()
632 buf |= (omap->threshold - 1) | OMAP_I2C_BUF_TXFIF_CLR; in omap_i2c_resize_fifo()
635 omap_i2c_write_reg(omap, OMAP_I2C_BUF_REG, buf); in omap_i2c_resize_fifo()
637 if (omap->rev < OMAP_I2C_REV_ON_3630) in omap_i2c_resize_fifo()
638 omap->b_hw = 1; /* Enable hardware fixes */ in omap_i2c_resize_fifo()
641 if (omap->set_mpu_wkup_lat != NULL) in omap_i2c_resize_fifo()
642 omap->latency = (1000000 * omap->threshold) / in omap_i2c_resize_fifo()
643 (1000 * omap->speed / 8); in omap_i2c_resize_fifo()
646 static void omap_i2c_wait(struct omap_i2c_dev *omap) in omap_i2c_wait() argument
649 u16 mask = omap_i2c_read_reg(omap, OMAP_I2C_IE_REG); in omap_i2c_wait()
653 stat = omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG); in omap_i2c_wait()
664 struct omap_i2c_dev *omap = i2c_get_adapdata(adap); in omap_i2c_xfer_msg() local
669 dev_dbg(omap->dev, "addr: 0x%04x, len: %d, flags: 0x%x, stop: %d\n", in omap_i2c_xfer_msg()
672 omap->receiver = !!(msg->flags & I2C_M_RD); in omap_i2c_xfer_msg()
673 omap_i2c_resize_fifo(omap, msg->len, omap->receiver); in omap_i2c_xfer_msg()
675 omap_i2c_write_reg(omap, OMAP_I2C_SA_REG, msg->addr); in omap_i2c_xfer_msg()
678 omap->buf = msg->buf; in omap_i2c_xfer_msg()
679 omap->buf_len = msg->len; in omap_i2c_xfer_msg()
681 /* make sure writes to omap->buf_len are ordered */ in omap_i2c_xfer_msg()
684 omap_i2c_write_reg(omap, OMAP_I2C_CNT_REG, omap->buf_len); in omap_i2c_xfer_msg()
687 w = omap_i2c_read_reg(omap, OMAP_I2C_BUF_REG); in omap_i2c_xfer_msg()
689 omap_i2c_write_reg(omap, OMAP_I2C_BUF_REG, w); in omap_i2c_xfer_msg()
692 reinit_completion(&omap->cmd_complete); in omap_i2c_xfer_msg()
693 omap->cmd_err = 0; in omap_i2c_xfer_msg()
698 if (omap->speed > 400) in omap_i2c_xfer_msg()
708 if (!omap->b_hw && stop) in omap_i2c_xfer_msg()
715 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, w); in omap_i2c_xfer_msg()
720 if (omap->b_hw && stop) { in omap_i2c_xfer_msg()
722 u16 con = omap_i2c_read_reg(omap, OMAP_I2C_CON_REG); in omap_i2c_xfer_msg()
724 con = omap_i2c_read_reg(omap, OMAP_I2C_CON_REG); in omap_i2c_xfer_msg()
728 dev_err(omap->dev, "controller timed out " in omap_i2c_xfer_msg()
737 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, w); in omap_i2c_xfer_msg()
745 time_left = wait_for_completion_timeout(&omap->cmd_complete, in omap_i2c_xfer_msg()
749 omap_i2c_wait(omap); in omap_i2c_xfer_msg()
750 ret = omap_i2c_xfer_data(omap); in omap_i2c_xfer_msg()
757 omap_i2c_reset(omap); in omap_i2c_xfer_msg()
758 __omap_i2c_init(omap); in omap_i2c_xfer_msg()
762 if (likely(!omap->cmd_err)) in omap_i2c_xfer_msg()
766 if (omap->cmd_err & (OMAP_I2C_STAT_ROVR | OMAP_I2C_STAT_XUDF)) { in omap_i2c_xfer_msg()
767 omap_i2c_reset(omap); in omap_i2c_xfer_msg()
768 __omap_i2c_init(omap); in omap_i2c_xfer_msg()
772 if (omap->cmd_err & OMAP_I2C_STAT_AL) in omap_i2c_xfer_msg()
775 if (omap->cmd_err & OMAP_I2C_STAT_NACK) { in omap_i2c_xfer_msg()
779 w = omap_i2c_read_reg(omap, OMAP_I2C_CON_REG); in omap_i2c_xfer_msg()
781 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, w); in omap_i2c_xfer_msg()
796 struct omap_i2c_dev *omap = i2c_get_adapdata(adap); in omap_i2c_xfer_common() local
800 r = pm_runtime_get_sync(omap->dev); in omap_i2c_xfer_common()
804 r = omap_i2c_wait_for_bb_valid(omap); in omap_i2c_xfer_common()
808 r = omap_i2c_wait_for_bb(omap); in omap_i2c_xfer_common()
812 if (omap->set_mpu_wkup_lat != NULL) in omap_i2c_xfer_common()
813 omap->set_mpu_wkup_lat(omap->dev, omap->latency); in omap_i2c_xfer_common()
825 omap_i2c_wait_for_bb(omap); in omap_i2c_xfer_common()
827 if (omap->set_mpu_wkup_lat != NULL) in omap_i2c_xfer_common()
828 omap->set_mpu_wkup_lat(omap->dev, -1); in omap_i2c_xfer_common()
831 pm_runtime_mark_last_busy(omap->dev); in omap_i2c_xfer_common()
832 pm_runtime_put_autosuspend(omap->dev); in omap_i2c_xfer_common()
856 omap_i2c_complete_cmd(struct omap_i2c_dev *omap, u16 err) in omap_i2c_complete_cmd() argument
858 omap->cmd_err |= err; in omap_i2c_complete_cmd()
859 complete(&omap->cmd_complete); in omap_i2c_complete_cmd()
863 omap_i2c_ack_stat(struct omap_i2c_dev *omap, u16 stat) in omap_i2c_ack_stat() argument
865 omap_i2c_write_reg(omap, OMAP_I2C_STAT_REG, stat); in omap_i2c_ack_stat()
868 static inline void i2c_omap_errata_i207(struct omap_i2c_dev *omap, u16 stat) in i2c_omap_errata_i207() argument
879 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_RDR); in i2c_omap_errata_i207()
882 if (!(omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG) in i2c_omap_errata_i207()
886 if (omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG) in i2c_omap_errata_i207()
888 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_RDR); in i2c_omap_errata_i207()
889 dev_dbg(omap->dev, "RDR when bus is busy.\n"); in i2c_omap_errata_i207()
902 struct omap_i2c_dev *omap = dev_id; in omap_i2c_omap1_isr() local
905 if (pm_runtime_suspended(omap->dev)) in omap_i2c_omap1_isr()
908 iv = omap_i2c_read_reg(omap, OMAP_I2C_IV_REG); in omap_i2c_omap1_isr()
913 dev_err(omap->dev, "Arbitration lost\n"); in omap_i2c_omap1_isr()
914 omap_i2c_complete_cmd(omap, OMAP_I2C_STAT_AL); in omap_i2c_omap1_isr()
917 omap_i2c_complete_cmd(omap, OMAP_I2C_STAT_NACK); in omap_i2c_omap1_isr()
918 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, OMAP_I2C_CON_STP); in omap_i2c_omap1_isr()
921 omap_i2c_complete_cmd(omap, 0); in omap_i2c_omap1_isr()
924 if (omap->buf_len) { in omap_i2c_omap1_isr()
925 w = omap_i2c_read_reg(omap, OMAP_I2C_DATA_REG); in omap_i2c_omap1_isr()
926 *omap->buf++ = w; in omap_i2c_omap1_isr()
927 omap->buf_len--; in omap_i2c_omap1_isr()
928 if (omap->buf_len) { in omap_i2c_omap1_isr()
929 *omap->buf++ = w >> 8; in omap_i2c_omap1_isr()
930 omap->buf_len--; in omap_i2c_omap1_isr()
933 dev_err(omap->dev, "RRDY IRQ while no data requested\n"); in omap_i2c_omap1_isr()
936 if (omap->buf_len) { in omap_i2c_omap1_isr()
937 w = *omap->buf++; in omap_i2c_omap1_isr()
938 omap->buf_len--; in omap_i2c_omap1_isr()
939 if (omap->buf_len) { in omap_i2c_omap1_isr()
940 w |= *omap->buf++ << 8; in omap_i2c_omap1_isr()
941 omap->buf_len--; in omap_i2c_omap1_isr()
943 omap_i2c_write_reg(omap, OMAP_I2C_DATA_REG, w); in omap_i2c_omap1_isr()
945 dev_err(omap->dev, "XRDY IRQ while no data to send\n"); in omap_i2c_omap1_isr()
962 static int errata_omap3_i462(struct omap_i2c_dev *omap) in errata_omap3_i462() argument
968 stat = omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG); in errata_omap3_i462()
973 omap_i2c_ack_stat(omap, (OMAP_I2C_STAT_XRDY | in errata_omap3_i462()
976 omap->cmd_err |= OMAP_I2C_STAT_NACK; in errata_omap3_i462()
977 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_NACK); in errata_omap3_i462()
981 dev_err(omap->dev, "Arbitration lost\n"); in errata_omap3_i462()
982 omap->cmd_err |= OMAP_I2C_STAT_AL; in errata_omap3_i462()
983 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_AL); in errata_omap3_i462()
993 dev_err(omap->dev, "timeout waiting on XUDF bit\n"); in errata_omap3_i462()
1000 static void omap_i2c_receive_data(struct omap_i2c_dev *omap, u8 num_bytes, in omap_i2c_receive_data() argument
1006 w = omap_i2c_read_reg(omap, OMAP_I2C_DATA_REG); in omap_i2c_receive_data()
1007 *omap->buf++ = w; in omap_i2c_receive_data()
1008 omap->buf_len--; in omap_i2c_receive_data()
1014 if (omap->flags & OMAP_I2C_FLAG_16BIT_DATA_REG) { in omap_i2c_receive_data()
1015 *omap->buf++ = w >> 8; in omap_i2c_receive_data()
1016 omap->buf_len--; in omap_i2c_receive_data()
1021 static int omap_i2c_transmit_data(struct omap_i2c_dev *omap, u8 num_bytes, in omap_i2c_transmit_data() argument
1027 w = *omap->buf++; in omap_i2c_transmit_data()
1028 omap->buf_len--; in omap_i2c_transmit_data()
1034 if (omap->flags & OMAP_I2C_FLAG_16BIT_DATA_REG) { in omap_i2c_transmit_data()
1035 w |= *omap->buf++ << 8; in omap_i2c_transmit_data()
1036 omap->buf_len--; in omap_i2c_transmit_data()
1039 if (omap->errata & I2C_OMAP_ERRATA_I462) { in omap_i2c_transmit_data()
1042 ret = errata_omap3_i462(omap); in omap_i2c_transmit_data()
1047 omap_i2c_write_reg(omap, OMAP_I2C_DATA_REG, w); in omap_i2c_transmit_data()
1053 static int omap_i2c_xfer_data(struct omap_i2c_dev *omap) in omap_i2c_xfer_data() argument
1060 bits = omap_i2c_read_reg(omap, OMAP_I2C_IE_REG); in omap_i2c_xfer_data()
1061 stat = omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG); in omap_i2c_xfer_data()
1065 if (omap->receiver) in omap_i2c_xfer_data()
1076 dev_dbg(omap->dev, "IRQ (ISR = 0x%04x)\n", stat); in omap_i2c_xfer_data()
1078 dev_warn(omap->dev, "Too much work in one IRQ\n"); in omap_i2c_xfer_data()
1083 omap->cmd_err |= OMAP_I2C_STAT_NACK; in omap_i2c_xfer_data()
1084 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_NACK); in omap_i2c_xfer_data()
1093 dev_err(omap->dev, "Arbitration lost\n"); in omap_i2c_xfer_data()
1095 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_AL); in omap_i2c_xfer_data()
1102 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_ARDY); in omap_i2c_xfer_data()
1106 omap_i2c_ack_stat(omap, (OMAP_I2C_STAT_RRDY | in omap_i2c_xfer_data()
1117 if (omap->fifo_size) in omap_i2c_xfer_data()
1118 num_bytes = omap->buf_len; in omap_i2c_xfer_data()
1120 if (omap->errata & I2C_OMAP_ERRATA_I207) { in omap_i2c_xfer_data()
1121 i2c_omap_errata_i207(omap, stat); in omap_i2c_xfer_data()
1122 num_bytes = (omap_i2c_read_reg(omap, in omap_i2c_xfer_data()
1126 omap_i2c_receive_data(omap, num_bytes, true); in omap_i2c_xfer_data()
1127 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_RDR); in omap_i2c_xfer_data()
1134 if (omap->threshold) in omap_i2c_xfer_data()
1135 num_bytes = omap->threshold; in omap_i2c_xfer_data()
1137 omap_i2c_receive_data(omap, num_bytes, false); in omap_i2c_xfer_data()
1138 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_RRDY); in omap_i2c_xfer_data()
1146 if (omap->fifo_size) in omap_i2c_xfer_data()
1147 num_bytes = omap->buf_len; in omap_i2c_xfer_data()
1149 ret = omap_i2c_transmit_data(omap, num_bytes, true); in omap_i2c_xfer_data()
1153 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_XDR); in omap_i2c_xfer_data()
1161 if (omap->threshold) in omap_i2c_xfer_data()
1162 num_bytes = omap->threshold; in omap_i2c_xfer_data()
1164 ret = omap_i2c_transmit_data(omap, num_bytes, false); in omap_i2c_xfer_data()
1168 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_XRDY); in omap_i2c_xfer_data()
1173 dev_err(omap->dev, "Receive overrun\n"); in omap_i2c_xfer_data()
1175 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_ROVR); in omap_i2c_xfer_data()
1180 dev_err(omap->dev, "Transmit underflow\n"); in omap_i2c_xfer_data()
1182 omap_i2c_ack_stat(omap, OMAP_I2C_STAT_XUDF); in omap_i2c_xfer_data()
1194 struct omap_i2c_dev *omap = dev_id; in omap_i2c_isr_thread() local
1196 ret = omap_i2c_xfer_data(omap); in omap_i2c_isr_thread()
1198 omap_i2c_complete_cmd(omap, ret); in omap_i2c_isr_thread()
1345 struct omap_i2c_dev *omap; in omap_i2c_probe() local
1359 omap = devm_kzalloc(&pdev->dev, sizeof(struct omap_i2c_dev), GFP_KERNEL); in omap_i2c_probe()
1360 if (!omap) in omap_i2c_probe()
1363 omap->base = devm_platform_ioremap_resource(pdev, 0); in omap_i2c_probe()
1364 if (IS_ERR(omap->base)) in omap_i2c_probe()
1365 return PTR_ERR(omap->base); in omap_i2c_probe()
1371 omap->flags = pdata->flags; in omap_i2c_probe()
1375 omap->speed = freq / 1000; in omap_i2c_probe()
1377 omap->speed = pdata->clkrate; in omap_i2c_probe()
1378 omap->flags = pdata->flags; in omap_i2c_probe()
1379 omap->set_mpu_wkup_lat = pdata->set_mpu_wkup_lat; in omap_i2c_probe()
1382 omap->dev = &pdev->dev; in omap_i2c_probe()
1383 omap->irq = irq; in omap_i2c_probe()
1385 platform_set_drvdata(pdev, omap); in omap_i2c_probe()
1386 init_completion(&omap->cmd_complete); in omap_i2c_probe()
1388 omap->reg_shift = (omap->flags >> OMAP_I2C_FLAG_BUS_SHIFT__SHIFT) & 3; in omap_i2c_probe()
1390 pm_runtime_enable(omap->dev); in omap_i2c_probe()
1391 pm_runtime_set_autosuspend_delay(omap->dev, OMAP_I2C_PM_TIMEOUT); in omap_i2c_probe()
1392 pm_runtime_use_autosuspend(omap->dev); in omap_i2c_probe()
1394 r = pm_runtime_resume_and_get(omap->dev); in omap_i2c_probe()
1404 rev = readw_relaxed(omap->base + 0x04); in omap_i2c_probe()
1406 omap->scheme = OMAP_I2C_SCHEME(rev); in omap_i2c_probe()
1407 switch (omap->scheme) { in omap_i2c_probe()
1409 omap->regs = (u8 *)reg_map_ip_v1; in omap_i2c_probe()
1410 omap->rev = omap_i2c_read_reg(omap, OMAP_I2C_REV_REG); in omap_i2c_probe()
1411 minor = OMAP_I2C_REV_SCHEME_0_MAJOR(omap->rev); in omap_i2c_probe()
1412 major = OMAP_I2C_REV_SCHEME_0_MAJOR(omap->rev); in omap_i2c_probe()
1416 omap->regs = (u8 *)reg_map_ip_v2; in omap_i2c_probe()
1418 omap_i2c_read_reg(omap, OMAP_I2C_IP_V2_REVNB_LO); in omap_i2c_probe()
1421 omap->rev = rev; in omap_i2c_probe()
1424 omap->errata = 0; in omap_i2c_probe()
1426 if (omap->rev >= OMAP_I2C_REV_ON_2430 && in omap_i2c_probe()
1427 omap->rev < OMAP_I2C_REV_ON_4430_PLUS) in omap_i2c_probe()
1428 omap->errata |= I2C_OMAP_ERRATA_I207; in omap_i2c_probe()
1430 if (omap->rev <= OMAP_I2C_REV_ON_3430_3530) in omap_i2c_probe()
1431 omap->errata |= I2C_OMAP_ERRATA_I462; in omap_i2c_probe()
1433 if (!(omap->flags & OMAP_I2C_FLAG_NO_FIFO)) { in omap_i2c_probe()
1437 s = (omap_i2c_read_reg(omap, OMAP_I2C_BUFSTAT_REG) >> 14) & 0x3; in omap_i2c_probe()
1438 omap->fifo_size = 0x8 << s; in omap_i2c_probe()
1446 omap->fifo_size = (omap->fifo_size / 2); in omap_i2c_probe()
1448 if (omap->rev < OMAP_I2C_REV_ON_3630) in omap_i2c_probe()
1449 omap->b_hw = 1; /* Enable hardware fixes */ in omap_i2c_probe()
1452 if (omap->set_mpu_wkup_lat != NULL) in omap_i2c_probe()
1453 omap->latency = (1000000 * omap->fifo_size) / in omap_i2c_probe()
1454 (1000 * omap->speed / 8); in omap_i2c_probe()
1466 omap->mux_state = mux_state; in omap_i2c_probe()
1467 r = mux_state_select(omap->mux_state); in omap_i2c_probe()
1475 omap_i2c_init(omap); in omap_i2c_probe()
1477 if (omap->rev < OMAP_I2C_OMAP1_REV_2) in omap_i2c_probe()
1478 r = devm_request_irq(&pdev->dev, omap->irq, omap_i2c_omap1_isr, in omap_i2c_probe()
1479 IRQF_NO_SUSPEND, pdev->name, omap); in omap_i2c_probe()
1481 r = devm_request_threaded_irq(&pdev->dev, omap->irq, in omap_i2c_probe()
1484 pdev->name, omap); in omap_i2c_probe()
1487 dev_err(omap->dev, "failure requesting irq %i\n", omap->irq); in omap_i2c_probe()
1491 adap = &omap->adapter; in omap_i2c_probe()
1492 i2c_set_adapdata(adap, omap); in omap_i2c_probe()
1495 strscpy(adap->name, "OMAP I2C adapter", sizeof(adap->name)); in omap_i2c_probe()
1508 dev_info(omap->dev, "bus %d rev%d.%d at %d kHz\n", adap->nr, in omap_i2c_probe()
1509 major, minor, omap->speed); in omap_i2c_probe()
1511 pm_runtime_mark_last_busy(omap->dev); in omap_i2c_probe()
1512 pm_runtime_put_autosuspend(omap->dev); in omap_i2c_probe()
1517 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, 0); in omap_i2c_probe()
1518 pm_runtime_dont_use_autosuspend(omap->dev); in omap_i2c_probe()
1519 pm_runtime_put_sync(omap->dev); in omap_i2c_probe()
1528 struct omap_i2c_dev *omap = platform_get_drvdata(pdev); in omap_i2c_remove() local
1531 i2c_del_adapter(&omap->adapter); in omap_i2c_remove()
1533 if (omap->mux_state) in omap_i2c_remove()
1534 mux_state_deselect(omap->mux_state); in omap_i2c_remove()
1538 dev_err(omap->dev, "Failed to resume hardware, skip disable\n"); in omap_i2c_remove()
1540 omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, 0); in omap_i2c_remove()
1549 struct omap_i2c_dev *omap = dev_get_drvdata(dev); in omap_i2c_runtime_suspend() local
1551 omap->iestate = omap_i2c_read_reg(omap, OMAP_I2C_IE_REG); in omap_i2c_runtime_suspend()
1553 if (omap->scheme == OMAP_I2C_SCHEME_0) in omap_i2c_runtime_suspend()
1554 omap_i2c_write_reg(omap, OMAP_I2C_IE_REG, 0); in omap_i2c_runtime_suspend()
1556 omap_i2c_write_reg(omap, OMAP_I2C_IP_V2_IRQENABLE_CLR, in omap_i2c_runtime_suspend()
1559 if (omap->rev < OMAP_I2C_OMAP1_REV_2) { in omap_i2c_runtime_suspend()
1560 omap_i2c_read_reg(omap, OMAP_I2C_IV_REG); /* Read clears */ in omap_i2c_runtime_suspend()
1562 omap_i2c_write_reg(omap, OMAP_I2C_STAT_REG, omap->iestate); in omap_i2c_runtime_suspend()
1565 omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG); in omap_i2c_runtime_suspend()
1575 struct omap_i2c_dev *omap = dev_get_drvdata(dev); in omap_i2c_runtime_resume() local
1579 if (!omap->regs) in omap_i2c_runtime_resume()
1582 __omap_i2c_init(omap); in omap_i2c_runtime_resume()
1641 MODULE_DESCRIPTION("TI OMAP I2C bus adapter");