306 static inline int is_imx1_i2c(struct imx_i2c_struct *i2c_imx)  in is_imx1_i2c()  argument
308 	return i2c_imx->hwdata->devtype == IMX1_I2C;  in is_imx1_i2c()
311 static inline int is_vf610_i2c(struct imx_i2c_struct *i2c_imx)  in is_vf610_i2c()  argument
313 	return i2c_imx->hwdata->devtype == VF610_I2C;  in is_vf610_i2c()
317 		struct imx_i2c_struct *i2c_imx, unsigned int reg)  in imx_i2c_write_reg()  argument
319 	writeb(val, i2c_imx->base + (reg << i2c_imx->hwdata->regshift));  in imx_i2c_write_reg()
322 static inline unsigned char imx_i2c_read_reg(struct imx_i2c_struct *i2c_imx,  in imx_i2c_read_reg()  argument
325 	return readb(i2c_imx->base + (reg << i2c_imx->hwdata->regshift));  in imx_i2c_read_reg()
328 static void i2c_imx_clear_irq(struct imx_i2c_struct *i2c_imx, unsigned int bits)  in i2c_imx_clear_irq()  argument
337 	temp = ~i2c_imx->hwdata->i2sr_clr_opcode ^ bits;  in i2c_imx_clear_irq()
338 	imx_i2c_write_reg(temp, i2c_imx, IMX_I2C_I2SR);  in i2c_imx_clear_irq()
342 static void i2c_imx_reset_regs(struct imx_i2c_struct *i2c_imx)  in i2c_imx_reset_regs()  argument
344 	imx_i2c_write_reg(i2c_imx->hwdata->i2cr_ien_opcode ^ I2CR_IEN,  in i2c_imx_reset_regs()
345 			  i2c_imx, IMX_I2C_I2CR);  in i2c_imx_reset_regs()
346 	i2c_imx_clear_irq(i2c_imx, I2SR_IIF | I2SR_IAL);  in i2c_imx_reset_regs()
350 static void i2c_imx_dma_request(struct imx_i2c_struct *i2c_imx,  in i2c_imx_dma_request()  argument
355 	struct device *dev = &i2c_imx->adapter.dev;  in i2c_imx_dma_request()
371 				(IMX_I2C_I2DR << i2c_imx->hwdata->regshift);  in i2c_imx_dma_request()
390 				(IMX_I2C_I2DR << i2c_imx->hwdata->regshift);  in i2c_imx_dma_request()
400 	i2c_imx->dma = dma;  in i2c_imx_dma_request()
417 	struct imx_i2c_struct *i2c_imx = (struct imx_i2c_struct *)arg;  in i2c_imx_dma_callback()  local
418 	struct imx_i2c_dma *dma = i2c_imx->dma;  in i2c_imx_dma_callback()
425 static int i2c_imx_dma_xfer(struct imx_i2c_struct *i2c_imx,  in i2c_imx_dma_xfer()  argument
428 	struct imx_i2c_dma *dma = i2c_imx->dma;  in i2c_imx_dma_xfer()
430 	struct device *dev = &i2c_imx->adapter.dev;  in i2c_imx_dma_xfer()
450 	txdesc->callback_param = i2c_imx;  in i2c_imx_dma_xfer()
468 static void i2c_imx_dma_free(struct imx_i2c_struct *i2c_imx)  in i2c_imx_dma_free()  argument
470 	struct imx_i2c_dma *dma = i2c_imx->dma;  in i2c_imx_dma_free()
484 static int i2c_imx_bus_busy(struct imx_i2c_struct *i2c_imx, int for_busy, bool atomic)  in i2c_imx_bus_busy()  argument
490 		temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2SR);  in i2c_imx_bus_busy()
494 			i2c_imx_clear_irq(i2c_imx, I2SR_IAL);  in i2c_imx_bus_busy()
499 			i2c_imx->stopped = 0;  in i2c_imx_bus_busy()
503 			i2c_imx->stopped = 1;  in i2c_imx_bus_busy()
507 			dev_dbg(&i2c_imx->adapter.dev,  in i2c_imx_bus_busy()
520 static int i2c_imx_trx_complete(struct imx_i2c_struct *i2c_imx, bool atomic)  in i2c_imx_trx_complete()  argument
523 		void __iomem *addr = i2c_imx->base + (IMX_I2C_I2SR << i2c_imx->hwdata->regshift);  in i2c_imx_trx_complete()
537 		i2c_imx->i2csr = regval;  in i2c_imx_trx_complete()
538 		i2c_imx_clear_irq(i2c_imx, I2SR_IIF | I2SR_IAL);  in i2c_imx_trx_complete()
540 		wait_event_timeout(i2c_imx->queue, i2c_imx->i2csr & I2SR_IIF, HZ / 10);  in i2c_imx_trx_complete()
543 	if (unlikely(!(i2c_imx->i2csr & I2SR_IIF))) {  in i2c_imx_trx_complete()
544 		dev_dbg(&i2c_imx->adapter.dev, "<%s> Timeout\n", __func__);  in i2c_imx_trx_complete()
549 	if (i2c_imx->i2csr & I2SR_IAL) {  in i2c_imx_trx_complete()
550 		dev_dbg(&i2c_imx->adapter.dev, "<%s> Arbitration lost\n", __func__);  in i2c_imx_trx_complete()
551 		i2c_imx_clear_irq(i2c_imx, I2SR_IAL);  in i2c_imx_trx_complete()
553 		i2c_imx->i2csr = 0;  in i2c_imx_trx_complete()
557 	dev_dbg(&i2c_imx->adapter.dev, "<%s> TRX complete\n", __func__);  in i2c_imx_trx_complete()
558 	i2c_imx->i2csr = 0;  in i2c_imx_trx_complete()
562 static int i2c_imx_acked(struct imx_i2c_struct *i2c_imx)  in i2c_imx_acked()  argument
564 	if (imx_i2c_read_reg(i2c_imx, IMX_I2C_I2SR) & I2SR_RXAK) {  in i2c_imx_acked()
565 		dev_dbg(&i2c_imx->adapter.dev, "<%s> No ACK\n", __func__);  in i2c_imx_acked()
569 	dev_dbg(&i2c_imx->adapter.dev, "<%s> ACK received\n", __func__);  in i2c_imx_acked()
573 static void i2c_imx_set_clk(struct imx_i2c_struct *i2c_imx,  in i2c_imx_set_clk()  argument
576 	struct imx_i2c_clk_pair *i2c_clk_div = i2c_imx->hwdata->clk_div;  in i2c_imx_set_clk()
580 	if (i2c_imx->hwdata->has_err007805 && i2c_imx->bitrate > 384000) {  in i2c_imx_set_clk()
581 		dev_dbg(&i2c_imx->adapter.dev,  in i2c_imx_set_clk()
583 			i2c_imx->bitrate);  in i2c_imx_set_clk()
584 		i2c_imx->bitrate = 384000;  in i2c_imx_set_clk()
588 	if (i2c_imx->cur_clk == i2c_clk_rate)  in i2c_imx_set_clk()
591 	i2c_imx->cur_clk = i2c_clk_rate;  in i2c_imx_set_clk()
593 	div = DIV_ROUND_UP(i2c_clk_rate, i2c_imx->bitrate);  in i2c_imx_set_clk()
596 	else if (div > i2c_clk_div[i2c_imx->hwdata->ndivs - 1].div)  in i2c_imx_set_clk()
597 		i = i2c_imx->hwdata->ndivs - 1;  in i2c_imx_set_clk()
603 	i2c_imx->ifdr = i2c_clk_div[i].val;  in i2c_imx_set_clk()
611 	i2c_imx->disable_delay = DIV_ROUND_UP(500000U * i2c_clk_div[i].div,  in i2c_imx_set_clk()
615 	dev_dbg(&i2c_imx->adapter.dev, "I2C_CLK=%d, REQ DIV=%d\n",  in i2c_imx_set_clk()
617 	dev_dbg(&i2c_imx->adapter.dev, "IFDR[IC]=0x%x, REAL DIV=%d\n",  in i2c_imx_set_clk()
626 	struct imx_i2c_struct *i2c_imx = container_of(nb,  in i2c_imx_clk_notifier_call()  local
631 		i2c_imx_set_clk(i2c_imx, ndata->new_rate);  in i2c_imx_clk_notifier_call()
636 static int i2c_imx_start(struct imx_i2c_struct *i2c_imx, bool atomic)  in i2c_imx_start()  argument
641 	imx_i2c_write_reg(i2c_imx->ifdr, i2c_imx, IMX_I2C_IFDR);  in i2c_imx_start()
643 	imx_i2c_write_reg(i2c_imx->hwdata->i2sr_clr_opcode, i2c_imx, IMX_I2C_I2SR);  in i2c_imx_start()
644 	imx_i2c_write_reg(i2c_imx->hwdata->i2cr_ien_opcode, i2c_imx, IMX_I2C_I2CR);  in i2c_imx_start()
653 	temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2CR);  in i2c_imx_start()
655 	imx_i2c_write_reg(temp, i2c_imx, IMX_I2C_I2CR);  in i2c_imx_start()
656 	result = i2c_imx_bus_busy(i2c_imx, 1, atomic);  in i2c_imx_start()
665 	imx_i2c_write_reg(temp, i2c_imx, IMX_I2C_I2CR);  in i2c_imx_start()
669 static void i2c_imx_stop(struct imx_i2c_struct *i2c_imx, bool atomic)  in i2c_imx_stop()  argument
673 	if (!i2c_imx->stopped) {  in i2c_imx_stop()
675 		temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2CR);  in i2c_imx_stop()
677 			i2c_imx->stopped = 1;  in i2c_imx_stop()
679 		if (i2c_imx->dma)  in i2c_imx_stop()
681 		imx_i2c_write_reg(temp, i2c_imx, IMX_I2C_I2CR);  in i2c_imx_stop()
683 	if (is_imx1_i2c(i2c_imx)) {  in i2c_imx_stop()
688 		udelay(i2c_imx->disable_delay);  in i2c_imx_stop()
691 	if (!i2c_imx->stopped)  in i2c_imx_stop()
692 		i2c_imx_bus_busy(i2c_imx, 0, atomic);  in i2c_imx_stop()
695 	temp = i2c_imx->hwdata->i2cr_ien_opcode ^ I2CR_IEN,  in i2c_imx_stop()
696 	imx_i2c_write_reg(temp, i2c_imx, IMX_I2C_I2CR);  in i2c_imx_stop()
704 static void i2c_imx_enable_bus_idle(struct imx_i2c_struct *i2c_imx)  in i2c_imx_enable_bus_idle()  argument
706 	if (is_vf610_i2c(i2c_imx)) {  in i2c_imx_enable_bus_idle()
709 		temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_IBIC);  in i2c_imx_enable_bus_idle()
711 		imx_i2c_write_reg(temp, i2c_imx, IMX_I2C_IBIC);  in i2c_imx_enable_bus_idle()
715 static void i2c_imx_slave_event(struct imx_i2c_struct *i2c_imx,  in i2c_imx_slave_event()  argument
718 	i2c_slave_event(i2c_imx->slave, event, val);  in i2c_imx_slave_event()
719 	i2c_imx->last_slave_event = event;  in i2c_imx_slave_event()
722 static void i2c_imx_slave_finish_op(struct imx_i2c_struct *i2c_imx)  in i2c_imx_slave_finish_op()  argument
726 	while (i2c_imx->last_slave_event != I2C_SLAVE_STOP) {  in i2c_imx_slave_finish_op()
727 		switch (i2c_imx->last_slave_event) {  in i2c_imx_slave_finish_op()
729 			i2c_imx_slave_event(i2c_imx, I2C_SLAVE_READ_PROCESSED,  in i2c_imx_slave_finish_op()
736 			i2c_imx_slave_event(i2c_imx, I2C_SLAVE_STOP, &val);  in i2c_imx_slave_finish_op()
746 static irqreturn_t i2c_imx_slave_handle(struct imx_i2c_struct *i2c_imx,  in i2c_imx_slave_handle()  argument
752 		i2c_imx_clear_irq(i2c_imx, I2SR_IAL);  in i2c_imx_slave_handle()
759 		i2c_imx_slave_finish_op(i2c_imx);  in i2c_imx_slave_handle()
768 		i2c_imx_slave_finish_op(i2c_imx);  in i2c_imx_slave_handle()
770 			dev_dbg(&i2c_imx->adapter.dev, "read requested");  in i2c_imx_slave_handle()
771 			i2c_imx_slave_event(i2c_imx,  in i2c_imx_slave_handle()
776 			imx_i2c_write_reg(ctl, i2c_imx, IMX_I2C_I2CR);  in i2c_imx_slave_handle()
779 			imx_i2c_write_reg(value, i2c_imx, IMX_I2C_I2DR);  in i2c_imx_slave_handle()
781 			dev_dbg(&i2c_imx->adapter.dev, "write requested");  in i2c_imx_slave_handle()
782 			i2c_imx_slave_event(i2c_imx,  in i2c_imx_slave_handle()
787 			imx_i2c_write_reg(ctl, i2c_imx, IMX_I2C_I2CR);  in i2c_imx_slave_handle()
789 			imx_i2c_read_reg(i2c_imx, IMX_I2C_I2DR);  in i2c_imx_slave_handle()
792 		value = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2DR);  in i2c_imx_slave_handle()
793 		i2c_imx_slave_event(i2c_imx,  in i2c_imx_slave_handle()
797 		imx_i2c_write_reg(ctl, i2c_imx, IMX_I2C_I2CR);  in i2c_imx_slave_handle()
799 		i2c_imx_slave_event(i2c_imx,  in i2c_imx_slave_handle()
802 		imx_i2c_write_reg(value, i2c_imx, IMX_I2C_I2DR);  in i2c_imx_slave_handle()
805 		imx_i2c_write_reg(ctl, i2c_imx, IMX_I2C_I2CR);  in i2c_imx_slave_handle()
806 		imx_i2c_read_reg(i2c_imx, IMX_I2C_I2DR);  in i2c_imx_slave_handle()
807 		i2c_imx_slave_finish_op(i2c_imx);  in i2c_imx_slave_handle()
819 	hrtimer_try_to_cancel(&i2c_imx->slave_timer);  in i2c_imx_slave_handle()
820 	hrtimer_forward_now(&i2c_imx->slave_timer, I2C_IMX_CHECK_DELAY);  in i2c_imx_slave_handle()
821 	hrtimer_restart(&i2c_imx->slave_timer);  in i2c_imx_slave_handle()
827 	struct imx_i2c_struct *i2c_imx = container_of(t, struct imx_i2c_struct,  in i2c_imx_slave_timeout()  local
832 	spin_lock_irqsave(&i2c_imx->slave_lock, flags);  in i2c_imx_slave_timeout()
833 	status = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2SR);  in i2c_imx_slave_timeout()
834 	ctl = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2CR);  in i2c_imx_slave_timeout()
835 	i2c_imx_slave_handle(i2c_imx, status, ctl);  in i2c_imx_slave_timeout()
836 	spin_unlock_irqrestore(&i2c_imx->slave_lock, flags);  in i2c_imx_slave_timeout()
840 static void i2c_imx_slave_init(struct imx_i2c_struct *i2c_imx)  in i2c_imx_slave_init()  argument
845 	imx_i2c_write_reg((i2c_imx->slave->addr << 1), i2c_imx, IMX_I2C_IADR);  in i2c_imx_slave_init()
847 	i2c_imx_reset_regs(i2c_imx);  in i2c_imx_slave_init()
850 	temp = i2c_imx->hwdata->i2cr_ien_opcode;  in i2c_imx_slave_init()
851 	imx_i2c_write_reg(temp, i2c_imx, IMX_I2C_I2CR);  in i2c_imx_slave_init()
855 	imx_i2c_write_reg(temp, i2c_imx, IMX_I2C_I2CR);  in i2c_imx_slave_init()
857 	i2c_imx_enable_bus_idle(i2c_imx);  in i2c_imx_slave_init()
862 	struct imx_i2c_struct *i2c_imx = i2c_get_adapdata(client->adapter);  in i2c_imx_reg_slave()  local
865 	if (i2c_imx->slave)  in i2c_imx_reg_slave()
868 	i2c_imx->slave = client;  in i2c_imx_reg_slave()
869 	i2c_imx->last_slave_event = I2C_SLAVE_STOP;  in i2c_imx_reg_slave()
872 	ret = pm_runtime_resume_and_get(i2c_imx->adapter.dev.parent);  in i2c_imx_reg_slave()
874 		dev_err(&i2c_imx->adapter.dev, "failed to resume i2c controller");  in i2c_imx_reg_slave()
878 	i2c_imx_slave_init(i2c_imx);  in i2c_imx_reg_slave()
885 	struct imx_i2c_struct *i2c_imx = i2c_get_adapdata(client->adapter);  in i2c_imx_unreg_slave()  local
888 	if (!i2c_imx->slave)  in i2c_imx_unreg_slave()
892 	imx_i2c_write_reg(0, i2c_imx, IMX_I2C_IADR);  in i2c_imx_unreg_slave()
894 	i2c_imx_reset_regs(i2c_imx);  in i2c_imx_unreg_slave()
896 	i2c_imx->slave = NULL;  in i2c_imx_unreg_slave()
899 	ret = pm_runtime_put_sync(i2c_imx->adapter.dev.parent);  in i2c_imx_unreg_slave()
901 		dev_err(&i2c_imx->adapter.dev, "failed to suspend i2c controller");  in i2c_imx_unreg_slave()
906 static irqreturn_t i2c_imx_master_isr(struct imx_i2c_struct *i2c_imx, unsigned int status)  in i2c_imx_master_isr()  argument
909 	i2c_imx->i2csr = status;  in i2c_imx_master_isr()
910 	wake_up(&i2c_imx->queue);  in i2c_imx_master_isr()
917 	struct imx_i2c_struct *i2c_imx = dev_id;  in i2c_imx_isr()  local
921 	spin_lock_irqsave(&i2c_imx->slave_lock, flags);  in i2c_imx_isr()
922 	status = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2SR);  in i2c_imx_isr()
923 	ctl = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2CR);  in i2c_imx_isr()
926 		i2c_imx_clear_irq(i2c_imx, I2SR_IIF);  in i2c_imx_isr()
927 		if (i2c_imx->slave) {  in i2c_imx_isr()
931 				ret = i2c_imx_slave_handle(i2c_imx,  in i2c_imx_isr()
933 				spin_unlock_irqrestore(&i2c_imx->slave_lock,  in i2c_imx_isr()
937 			i2c_imx_slave_finish_op(i2c_imx);  in i2c_imx_isr()
939 		spin_unlock_irqrestore(&i2c_imx->slave_lock, flags);  in i2c_imx_isr()
940 		return i2c_imx_master_isr(i2c_imx, status);  in i2c_imx_isr()
942 	spin_unlock_irqrestore(&i2c_imx->slave_lock, flags);  in i2c_imx_isr()
947 static int i2c_imx_dma_write(struct imx_i2c_struct *i2c_imx,  in i2c_imx_dma_write()  argument
954 	struct imx_i2c_dma *dma = i2c_imx->dma;  in i2c_imx_dma_write()
955 	struct device *dev = &i2c_imx->adapter.dev;  in i2c_imx_dma_write()
961 	result = i2c_imx_dma_xfer(i2c_imx, msgs);  in i2c_imx_dma_write()
965 	temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2CR);  in i2c_imx_dma_write()
967 	imx_i2c_write_reg(temp, i2c_imx, IMX_I2C_I2CR);  in i2c_imx_dma_write()
973 	imx_i2c_write_reg(i2c_8bit_addr_from_msg(msgs), i2c_imx, IMX_I2C_I2DR);  in i2c_imx_dma_write()
975 				&i2c_imx->dma->cmd_complete,  in i2c_imx_dma_write()
984 		temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2SR);  in i2c_imx_dma_write()
995 	temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2CR);  in i2c_imx_dma_write()
997 	imx_i2c_write_reg(temp, i2c_imx, IMX_I2C_I2CR);  in i2c_imx_dma_write()
1001 				i2c_imx, IMX_I2C_I2DR);  in i2c_imx_dma_write()
1002 	result = i2c_imx_trx_complete(i2c_imx, false);  in i2c_imx_dma_write()
1006 	return i2c_imx_acked(i2c_imx);  in i2c_imx_dma_write()
1009 static int i2c_imx_dma_read(struct imx_i2c_struct *i2c_imx,  in i2c_imx_dma_read()  argument
1016 	struct imx_i2c_dma *dma = i2c_imx->dma;  in i2c_imx_dma_read()
1017 	struct device *dev = &i2c_imx->adapter.dev;  in i2c_imx_dma_read()
1025 	result = i2c_imx_dma_xfer(i2c_imx, msgs);  in i2c_imx_dma_read()
1030 				&i2c_imx->dma->cmd_complete,  in i2c_imx_dma_read()
1039 		temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2SR);  in i2c_imx_dma_read()
1050 	temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2CR);  in i2c_imx_dma_read()
1052 	imx_i2c_write_reg(temp, i2c_imx, IMX_I2C_I2CR);  in i2c_imx_dma_read()
1055 	temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2CR);  in i2c_imx_dma_read()
1057 	imx_i2c_write_reg(temp, i2c_imx, IMX_I2C_I2CR);  in i2c_imx_dma_read()
1059 	msgs->buf[msgs->len-2] = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2DR);  in i2c_imx_dma_read()
1061 	result = i2c_imx_trx_complete(i2c_imx, false);  in i2c_imx_dma_read()
1071 		temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2CR);  in i2c_imx_dma_read()
1073 			i2c_imx->stopped = 1;  in i2c_imx_dma_read()
1075 		imx_i2c_write_reg(temp, i2c_imx, IMX_I2C_I2CR);  in i2c_imx_dma_read()
1076 		if (!i2c_imx->stopped)  in i2c_imx_dma_read()
1077 			i2c_imx_bus_busy(i2c_imx, 0, false);  in i2c_imx_dma_read()
1086 		temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2CR);  in i2c_imx_dma_read()
1088 		imx_i2c_write_reg(temp, i2c_imx, IMX_I2C_I2CR);  in i2c_imx_dma_read()
1090 	msgs->buf[msgs->len-1] = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2DR);  in i2c_imx_dma_read()
1095 static int i2c_imx_write(struct imx_i2c_struct *i2c_imx, struct i2c_msg *msgs,  in i2c_imx_write()  argument
1100 	dev_dbg(&i2c_imx->adapter.dev, "<%s> write slave address: addr=0x%x\n",  in i2c_imx_write()
1104 	imx_i2c_write_reg(i2c_8bit_addr_from_msg(msgs), i2c_imx, IMX_I2C_I2DR);  in i2c_imx_write()
1105 	result = i2c_imx_trx_complete(i2c_imx, atomic);  in i2c_imx_write()
1108 	result = i2c_imx_acked(i2c_imx);  in i2c_imx_write()
1111 	dev_dbg(&i2c_imx->adapter.dev, "<%s> write data\n", __func__);  in i2c_imx_write()
1115 		dev_dbg(&i2c_imx->adapter.dev,  in i2c_imx_write()
1118 		imx_i2c_write_reg(msgs->buf[i], i2c_imx, IMX_I2C_I2DR);  in i2c_imx_write()
1119 		result = i2c_imx_trx_complete(i2c_imx, atomic);  in i2c_imx_write()
1122 		result = i2c_imx_acked(i2c_imx);  in i2c_imx_write()
1129 static int i2c_imx_read(struct imx_i2c_struct *i2c_imx, struct i2c_msg *msgs,  in i2c_imx_read()  argument
1135 	int use_dma = i2c_imx->dma && msgs->flags & I2C_M_DMA_SAFE &&  in i2c_imx_read()
1138 	dev_dbg(&i2c_imx->adapter.dev,  in i2c_imx_read()
1143 	imx_i2c_write_reg(i2c_8bit_addr_from_msg(msgs), i2c_imx, IMX_I2C_I2DR);  in i2c_imx_read()
1144 	result = i2c_imx_trx_complete(i2c_imx, atomic);  in i2c_imx_read()
1147 	result = i2c_imx_acked(i2c_imx);  in i2c_imx_read()
1151 	dev_dbg(&i2c_imx->adapter.dev, "<%s> setup bus\n", __func__);  in i2c_imx_read()
1154 	temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2CR);  in i2c_imx_read()
1165 	imx_i2c_write_reg(temp, i2c_imx, IMX_I2C_I2CR);  in i2c_imx_read()
1166 	imx_i2c_read_reg(i2c_imx, IMX_I2C_I2DR); /* dummy read */  in i2c_imx_read()
1168 	dev_dbg(&i2c_imx->adapter.dev, "<%s> read data\n", __func__);  in i2c_imx_read()
1171 		return i2c_imx_dma_read(i2c_imx, msgs, is_lastmsg);  in i2c_imx_read()
1177 		result = i2c_imx_trx_complete(i2c_imx, atomic);  in i2c_imx_read()
1186 			len = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2DR);  in i2c_imx_read()
1189 			dev_dbg(&i2c_imx->adapter.dev,  in i2c_imx_read()
1200 				dev_dbg(&i2c_imx->adapter.dev,  in i2c_imx_read()
1202 				temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2CR);  in i2c_imx_read()
1204 					i2c_imx->stopped =  1;  in i2c_imx_read()
1206 				imx_i2c_write_reg(temp, i2c_imx, IMX_I2C_I2CR);  in i2c_imx_read()
1207 				if (!i2c_imx->stopped)  in i2c_imx_read()
1208 					i2c_imx_bus_busy(i2c_imx, 0, atomic);  in i2c_imx_read()
1217 				temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2CR);  in i2c_imx_read()
1219 				imx_i2c_write_reg(temp, i2c_imx, IMX_I2C_I2CR);  in i2c_imx_read()
1222 			dev_dbg(&i2c_imx->adapter.dev,  in i2c_imx_read()
1224 			temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2CR);  in i2c_imx_read()
1226 			imx_i2c_write_reg(temp, i2c_imx, IMX_I2C_I2CR);  in i2c_imx_read()
1231 			msgs->buf[i] = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2DR);  in i2c_imx_read()
1232 		dev_dbg(&i2c_imx->adapter.dev,  in i2c_imx_read()
1245 	struct imx_i2c_struct *i2c_imx = i2c_get_adapdata(adapter);  in i2c_imx_xfer_common()  local
1248 	result = i2c_imx_start(i2c_imx, atomic);  in i2c_imx_xfer_common()
1254 		if (!atomic && i2c_imx->adapter.bus_recovery_info) {  in i2c_imx_xfer_common()
1255 			i2c_recover_bus(&i2c_imx->adapter);  in i2c_imx_xfer_common()
1256 			result = i2c_imx_start(i2c_imx, atomic);  in i2c_imx_xfer_common()
1269 			dev_dbg(&i2c_imx->adapter.dev,  in i2c_imx_xfer_common()
1271 			temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2CR);  in i2c_imx_xfer_common()
1273 			imx_i2c_write_reg(temp, i2c_imx, IMX_I2C_I2CR);  in i2c_imx_xfer_common()
1274 			result = i2c_imx_bus_busy(i2c_imx, 1, atomic);  in i2c_imx_xfer_common()
1278 		dev_dbg(&i2c_imx->adapter.dev,  in i2c_imx_xfer_common()
1282 		temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2CR);  in i2c_imx_xfer_common()
1283 		dev_dbg(&i2c_imx->adapter.dev,  in i2c_imx_xfer_common()
1289 		temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2SR);  in i2c_imx_xfer_common()
1290 		dev_dbg(&i2c_imx->adapter.dev,  in i2c_imx_xfer_common()
1299 			result = i2c_imx_read(i2c_imx, &msgs[i], is_lastmsg, atomic);  in i2c_imx_xfer_common()
1302 			    i2c_imx->dma && msgs[i].len >= DMA_THRESHOLD &&  in i2c_imx_xfer_common()
1304 				result = i2c_imx_dma_write(i2c_imx, &msgs[i]);  in i2c_imx_xfer_common()
1306 				result = i2c_imx_write(i2c_imx, &msgs[i], atomic);  in i2c_imx_xfer_common()
1314 	i2c_imx_stop(i2c_imx, atomic);  in i2c_imx_xfer_common()
1316 	dev_dbg(&i2c_imx->adapter.dev, "<%s> exit with: %s: %d\n", __func__,  in i2c_imx_xfer_common()
1320 	if (i2c_imx->slave)  in i2c_imx_xfer_common()
1321 		i2c_imx_slave_init(i2c_imx);  in i2c_imx_xfer_common()
1329 	struct imx_i2c_struct *i2c_imx = i2c_get_adapdata(adapter);  in i2c_imx_xfer()  local
1332 	result = pm_runtime_resume_and_get(i2c_imx->adapter.dev.parent);  in i2c_imx_xfer()
1338 	pm_runtime_mark_last_busy(i2c_imx->adapter.dev.parent);  in i2c_imx_xfer()
1339 	pm_runtime_put_autosuspend(i2c_imx->adapter.dev.parent);  in i2c_imx_xfer()
1347 	struct imx_i2c_struct *i2c_imx = i2c_get_adapdata(adapter);  in i2c_imx_xfer_atomic()  local
1350 	result = clk_enable(i2c_imx->clk);  in i2c_imx_xfer_atomic()
1356 	clk_disable(i2c_imx->clk);  in i2c_imx_xfer_atomic()
1363 	struct imx_i2c_struct *i2c_imx;  in i2c_imx_prepare_recovery()  local
1365 	i2c_imx = container_of(adap, struct imx_i2c_struct, adapter);  in i2c_imx_prepare_recovery()
1367 	pinctrl_select_state(i2c_imx->pinctrl, i2c_imx->pinctrl_pins_gpio);  in i2c_imx_prepare_recovery()
1372 	struct imx_i2c_struct *i2c_imx;  in i2c_imx_unprepare_recovery()  local
1374 	i2c_imx = container_of(adap, struct imx_i2c_struct, adapter);  in i2c_imx_unprepare_recovery()
1376 	pinctrl_select_state(i2c_imx->pinctrl, i2c_imx->pinctrl_pins_default);  in i2c_imx_unprepare_recovery()
1386 static int i2c_imx_init_recovery_info(struct imx_i2c_struct *i2c_imx,  in i2c_imx_init_recovery_info()  argument
1389 	struct i2c_bus_recovery_info *rinfo = &i2c_imx->rinfo;  in i2c_imx_init_recovery_info()
1391 	i2c_imx->pinctrl = devm_pinctrl_get(&pdev->dev);  in i2c_imx_init_recovery_info()
1392 	if (!i2c_imx->pinctrl || IS_ERR(i2c_imx->pinctrl)) {  in i2c_imx_init_recovery_info()
1394 		return PTR_ERR(i2c_imx->pinctrl);  in i2c_imx_init_recovery_info()
1397 	i2c_imx->pinctrl_pins_default = pinctrl_lookup_state(i2c_imx->pinctrl,  in i2c_imx_init_recovery_info()
1399 	i2c_imx->pinctrl_pins_gpio = pinctrl_lookup_state(i2c_imx->pinctrl,  in i2c_imx_init_recovery_info()
1409 		   IS_ERR(i2c_imx->pinctrl_pins_default) ||  in i2c_imx_init_recovery_info()
1410 		   IS_ERR(i2c_imx->pinctrl_pins_gpio)) {  in i2c_imx_init_recovery_info()
1421 	i2c_imx->adapter.bus_recovery_info = rinfo;  in i2c_imx_init_recovery_info()
1442 	struct imx_i2c_struct *i2c_imx;  in i2c_imx_probe()  local
1460 	i2c_imx = devm_kzalloc(&pdev->dev, sizeof(*i2c_imx), GFP_KERNEL);  in i2c_imx_probe()
1461 	if (!i2c_imx)  in i2c_imx_probe()
1464 	spin_lock_init(&i2c_imx->slave_lock);  in i2c_imx_probe()
1465 	hrtimer_init(&i2c_imx->slave_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);  in i2c_imx_probe()
1466 	i2c_imx->slave_timer.function = i2c_imx_slave_timeout;  in i2c_imx_probe()
1470 		i2c_imx->hwdata = match;  in i2c_imx_probe()
1472 		i2c_imx->hwdata = (struct imx_i2c_hwdata *)  in i2c_imx_probe()
1476 	strscpy(i2c_imx->adapter.name, pdev->name, sizeof(i2c_imx->adapter.name));  in i2c_imx_probe()
1477 	i2c_imx->adapter.owner		= THIS_MODULE;  in i2c_imx_probe()
1478 	i2c_imx->adapter.algo		= &i2c_imx_algo;  in i2c_imx_probe()
1479 	i2c_imx->adapter.dev.parent	= &pdev->dev;  in i2c_imx_probe()
1480 	i2c_imx->adapter.nr		= pdev->id;  in i2c_imx_probe()
1481 	i2c_imx->adapter.dev.of_node	= pdev->dev.of_node;  in i2c_imx_probe()
1482 	i2c_imx->base			= base;  in i2c_imx_probe()
1483 	ACPI_COMPANION_SET(&i2c_imx->adapter.dev, ACPI_COMPANION(&pdev->dev));  in i2c_imx_probe()
1486 	i2c_imx->clk = devm_clk_get(&pdev->dev, NULL);  in i2c_imx_probe()
1487 	if (IS_ERR(i2c_imx->clk))  in i2c_imx_probe()
1488 		return dev_err_probe(&pdev->dev, PTR_ERR(i2c_imx->clk),  in i2c_imx_probe()
1491 	ret = clk_prepare_enable(i2c_imx->clk);  in i2c_imx_probe()
1498 	init_waitqueue_head(&i2c_imx->queue);  in i2c_imx_probe()
1501 	i2c_set_adapdata(&i2c_imx->adapter, i2c_imx);  in i2c_imx_probe()
1504 	platform_set_drvdata(pdev, i2c_imx);  in i2c_imx_probe()
1517 				   pdev->name, i2c_imx);  in i2c_imx_probe()
1524 	i2c_imx->bitrate = I2C_MAX_STANDARD_MODE_FREQ;  in i2c_imx_probe()
1526 				   "clock-frequency", &i2c_imx->bitrate);  in i2c_imx_probe()
1528 		i2c_imx->bitrate = pdata->bitrate;  in i2c_imx_probe()
1529 	i2c_imx->clk_change_nb.notifier_call = i2c_imx_clk_notifier_call;  in i2c_imx_probe()
1530 	clk_notifier_register(i2c_imx->clk, &i2c_imx->clk_change_nb);  in i2c_imx_probe()
1531 	i2c_imx_set_clk(i2c_imx, clk_get_rate(i2c_imx->clk));  in i2c_imx_probe()
1533 	i2c_imx_reset_regs(i2c_imx);  in i2c_imx_probe()
1536 	ret = i2c_imx_init_recovery_info(i2c_imx, pdev);  in i2c_imx_probe()
1542 	ret = i2c_add_numbered_adapter(&i2c_imx->adapter);  in i2c_imx_probe()
1549 	dev_dbg(&i2c_imx->adapter.dev, "claimed irq %d\n", irq);  in i2c_imx_probe()
1550 	dev_dbg(&i2c_imx->adapter.dev, "device resources: %pR\n", res);  in i2c_imx_probe()
1551 	dev_dbg(&i2c_imx->adapter.dev, "adapter name: \"%s\"\n",  in i2c_imx_probe()
1552 		i2c_imx->adapter.name);  in i2c_imx_probe()
1553 	dev_info(&i2c_imx->adapter.dev, "IMX I2C adapter registered\n");  in i2c_imx_probe()
1556 	i2c_imx_dma_request(i2c_imx, phy_addr);  in i2c_imx_probe()
1561 	clk_notifier_unregister(i2c_imx->clk, &i2c_imx->clk_change_nb);  in i2c_imx_probe()
1562 	free_irq(irq, i2c_imx);  in i2c_imx_probe()
1568 	clk_disable_unprepare(i2c_imx->clk);  in i2c_imx_probe()
1574 	struct imx_i2c_struct *i2c_imx = platform_get_drvdata(pdev);  in i2c_imx_remove()  local
1579 	hrtimer_cancel(&i2c_imx->slave_timer);  in i2c_imx_remove()
1582 	dev_dbg(&i2c_imx->adapter.dev, "adapter removed\n");  in i2c_imx_remove()
1583 	i2c_del_adapter(&i2c_imx->adapter);  in i2c_imx_remove()
1585 	if (i2c_imx->dma)  in i2c_imx_remove()
1586 		i2c_imx_dma_free(i2c_imx);  in i2c_imx_remove()
1590 		imx_i2c_write_reg(0, i2c_imx, IMX_I2C_IADR);  in i2c_imx_remove()
1591 		imx_i2c_write_reg(0, i2c_imx, IMX_I2C_IFDR);  in i2c_imx_remove()
1592 		imx_i2c_write_reg(0, i2c_imx, IMX_I2C_I2CR);  in i2c_imx_remove()
1593 		imx_i2c_write_reg(0, i2c_imx, IMX_I2C_I2SR);  in i2c_imx_remove()
1594 		clk_disable(i2c_imx->clk);  in i2c_imx_remove()
1597 	clk_notifier_unregister(i2c_imx->clk, &i2c_imx->clk_change_nb);  in i2c_imx_remove()
1600 		free_irq(irq, i2c_imx);  in i2c_imx_remove()
1602 	clk_unprepare(i2c_imx->clk);  in i2c_imx_remove()
1612 	struct imx_i2c_struct *i2c_imx = dev_get_drvdata(dev);  in i2c_imx_runtime_suspend()  local
1614 	clk_disable(i2c_imx->clk);  in i2c_imx_runtime_suspend()
1621 	struct imx_i2c_struct *i2c_imx = dev_get_drvdata(dev);  in i2c_imx_runtime_resume()  local
1624 	ret = clk_enable(i2c_imx->clk);  in i2c_imx_runtime_resume()