Lines Matching refs:i2c
149 static int i2c_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat);
188 static inline void s3c24xx_i2c_master_complete(struct s3c24xx_i2c *i2c, int ret) in s3c24xx_i2c_master_complete() argument
190 dev_dbg(i2c->dev, "master_complete %d\n", ret); in s3c24xx_i2c_master_complete()
192 i2c->msg_ptr = 0; in s3c24xx_i2c_master_complete()
193 i2c->msg = NULL; in s3c24xx_i2c_master_complete()
194 i2c->msg_idx++; in s3c24xx_i2c_master_complete()
195 i2c->msg_num = 0; in s3c24xx_i2c_master_complete()
197 i2c->msg_idx = ret; in s3c24xx_i2c_master_complete()
199 if (!(i2c->quirks & QUIRK_POLL)) in s3c24xx_i2c_master_complete()
200 wake_up(&i2c->wait); in s3c24xx_i2c_master_complete()
203 static inline void s3c24xx_i2c_disable_ack(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_disable_ack() argument
207 tmp = readl(i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_disable_ack()
208 writel(tmp & ~S3C2410_IICCON_ACKEN, i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_disable_ack()
211 static inline void s3c24xx_i2c_enable_ack(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_enable_ack() argument
215 tmp = readl(i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_enable_ack()
216 writel(tmp | S3C2410_IICCON_ACKEN, i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_enable_ack()
221 static inline void s3c24xx_i2c_disable_irq(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_disable_irq() argument
225 tmp = readl(i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_disable_irq()
226 writel(tmp & ~S3C2410_IICCON_IRQEN, i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_disable_irq()
229 static inline void s3c24xx_i2c_enable_irq(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_enable_irq() argument
233 tmp = readl(i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_enable_irq()
234 writel(tmp | S3C2410_IICCON_IRQEN, i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_enable_irq()
237 static bool is_ack(struct s3c24xx_i2c *i2c) in is_ack() argument
242 if (readl(i2c->regs + S3C2410_IICCON) in is_ack()
244 if (!(readl(i2c->regs + S3C2410_IICSTAT) in is_ack()
250 dev_err(i2c->dev, "ack was not received\n"); in is_ack()
259 static void s3c24xx_i2c_message_start(struct s3c24xx_i2c *i2c, in s3c24xx_i2c_message_start() argument
279 s3c24xx_i2c_enable_ack(i2c); in s3c24xx_i2c_message_start()
281 iiccon = readl(i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_message_start()
282 writel(stat, i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_message_start()
284 dev_dbg(i2c->dev, "START: %08lx to IICSTAT, %02x to DS\n", stat, addr); in s3c24xx_i2c_message_start()
285 writeb(addr, i2c->regs + S3C2410_IICDS); in s3c24xx_i2c_message_start()
290 ndelay(i2c->tx_setup); in s3c24xx_i2c_message_start()
292 dev_dbg(i2c->dev, "iiccon, %08lx\n", iiccon); in s3c24xx_i2c_message_start()
293 writel(iiccon, i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_message_start()
296 writel(stat, i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_message_start()
298 if (i2c->quirks & QUIRK_POLL) { in s3c24xx_i2c_message_start()
299 while ((i2c->msg_num != 0) && is_ack(i2c)) { in s3c24xx_i2c_message_start()
300 i2c_s3c_irq_nextbyte(i2c, stat); in s3c24xx_i2c_message_start()
301 stat = readl(i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_message_start()
304 dev_err(i2c->dev, "deal with arbitration loss\n"); in s3c24xx_i2c_message_start()
309 static inline void s3c24xx_i2c_stop(struct s3c24xx_i2c *i2c, int ret) in s3c24xx_i2c_stop() argument
311 unsigned long iicstat = readl(i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_stop()
313 dev_dbg(i2c->dev, "STOP\n"); in s3c24xx_i2c_stop()
349 if (i2c->quirks & QUIRK_HDMIPHY) { in s3c24xx_i2c_stop()
356 writel(iicstat, i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_stop()
358 i2c->state = STATE_STOP; in s3c24xx_i2c_stop()
360 s3c24xx_i2c_master_complete(i2c, ret); in s3c24xx_i2c_stop()
361 s3c24xx_i2c_disable_irq(i2c); in s3c24xx_i2c_stop()
372 static inline int is_lastmsg(struct s3c24xx_i2c *i2c) in is_lastmsg() argument
374 return i2c->msg_idx >= (i2c->msg_num - 1); in is_lastmsg()
382 static inline int is_msglast(struct s3c24xx_i2c *i2c) in is_msglast() argument
387 if (i2c->msg->flags & I2C_M_RECV_LEN && i2c->msg->len == 1) in is_msglast()
390 return i2c->msg_ptr == i2c->msg->len-1; in is_msglast()
398 static inline int is_msgend(struct s3c24xx_i2c *i2c) in is_msgend() argument
400 return i2c->msg_ptr >= i2c->msg->len; in is_msgend()
408 static int i2c_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat) in i2c_s3c_irq_nextbyte() argument
414 switch (i2c->state) { in i2c_s3c_irq_nextbyte()
417 dev_err(i2c->dev, "%s: called in STATE_IDLE\n", __func__); in i2c_s3c_irq_nextbyte()
421 dev_err(i2c->dev, "%s: called in STATE_STOP\n", __func__); in i2c_s3c_irq_nextbyte()
422 s3c24xx_i2c_disable_irq(i2c); in i2c_s3c_irq_nextbyte()
431 !(i2c->msg->flags & I2C_M_IGNORE_NAK)) { in i2c_s3c_irq_nextbyte()
434 dev_dbg(i2c->dev, "ack was not received\n"); in i2c_s3c_irq_nextbyte()
435 s3c24xx_i2c_stop(i2c, -ENXIO); in i2c_s3c_irq_nextbyte()
439 if (i2c->msg->flags & I2C_M_RD) in i2c_s3c_irq_nextbyte()
440 i2c->state = STATE_READ; in i2c_s3c_irq_nextbyte()
442 i2c->state = STATE_WRITE; in i2c_s3c_irq_nextbyte()
447 if (is_lastmsg(i2c) && i2c->msg->len == 0) { in i2c_s3c_irq_nextbyte()
448 s3c24xx_i2c_stop(i2c, 0); in i2c_s3c_irq_nextbyte()
452 if (i2c->state == STATE_READ) in i2c_s3c_irq_nextbyte()
463 if (!(i2c->msg->flags & I2C_M_IGNORE_NAK)) { in i2c_s3c_irq_nextbyte()
465 dev_dbg(i2c->dev, "WRITE: No Ack\n"); in i2c_s3c_irq_nextbyte()
467 s3c24xx_i2c_stop(i2c, -ECONNREFUSED); in i2c_s3c_irq_nextbyte()
474 if (!is_msgend(i2c)) { in i2c_s3c_irq_nextbyte()
475 byte = i2c->msg->buf[i2c->msg_ptr++]; in i2c_s3c_irq_nextbyte()
476 writeb(byte, i2c->regs + S3C2410_IICDS); in i2c_s3c_irq_nextbyte()
484 ndelay(i2c->tx_setup); in i2c_s3c_irq_nextbyte()
486 } else if (!is_lastmsg(i2c)) { in i2c_s3c_irq_nextbyte()
489 dev_dbg(i2c->dev, "WRITE: Next Message\n"); in i2c_s3c_irq_nextbyte()
491 i2c->msg_ptr = 0; in i2c_s3c_irq_nextbyte()
492 i2c->msg_idx++; in i2c_s3c_irq_nextbyte()
493 i2c->msg++; in i2c_s3c_irq_nextbyte()
496 if (i2c->msg->flags & I2C_M_NOSTART) { in i2c_s3c_irq_nextbyte()
498 if (i2c->msg->flags & I2C_M_RD) { in i2c_s3c_irq_nextbyte()
503 s3c24xx_i2c_stop(i2c, -EINVAL); in i2c_s3c_irq_nextbyte()
509 s3c24xx_i2c_message_start(i2c, i2c->msg); in i2c_s3c_irq_nextbyte()
510 i2c->state = STATE_START; in i2c_s3c_irq_nextbyte()
516 s3c24xx_i2c_stop(i2c, 0); in i2c_s3c_irq_nextbyte()
526 byte = readb(i2c->regs + S3C2410_IICDS); in i2c_s3c_irq_nextbyte()
527 i2c->msg->buf[i2c->msg_ptr++] = byte; in i2c_s3c_irq_nextbyte()
530 if (i2c->msg->flags & I2C_M_RECV_LEN && i2c->msg->len == 1) in i2c_s3c_irq_nextbyte()
531 i2c->msg->len += byte; in i2c_s3c_irq_nextbyte()
533 if (is_msglast(i2c)) { in i2c_s3c_irq_nextbyte()
536 if (is_lastmsg(i2c)) in i2c_s3c_irq_nextbyte()
537 s3c24xx_i2c_disable_ack(i2c); in i2c_s3c_irq_nextbyte()
539 } else if (is_msgend(i2c)) { in i2c_s3c_irq_nextbyte()
543 if (is_lastmsg(i2c)) { in i2c_s3c_irq_nextbyte()
545 dev_dbg(i2c->dev, "READ: Send Stop\n"); in i2c_s3c_irq_nextbyte()
547 s3c24xx_i2c_stop(i2c, 0); in i2c_s3c_irq_nextbyte()
550 dev_dbg(i2c->dev, "READ: Next Transfer\n"); in i2c_s3c_irq_nextbyte()
552 i2c->msg_ptr = 0; in i2c_s3c_irq_nextbyte()
553 i2c->msg_idx++; in i2c_s3c_irq_nextbyte()
554 i2c->msg++; in i2c_s3c_irq_nextbyte()
564 tmp = readl(i2c->regs + S3C2410_IICCON); in i2c_s3c_irq_nextbyte()
566 writel(tmp, i2c->regs + S3C2410_IICCON); in i2c_s3c_irq_nextbyte()
578 struct s3c24xx_i2c *i2c = dev_id; in s3c24xx_i2c_irq() local
582 status = readl(i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_irq()
586 dev_err(i2c->dev, "deal with arbitration loss\n"); in s3c24xx_i2c_irq()
589 if (i2c->state == STATE_IDLE) { in s3c24xx_i2c_irq()
590 dev_dbg(i2c->dev, "IRQ: error i2c->state == IDLE\n"); in s3c24xx_i2c_irq()
592 tmp = readl(i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_irq()
594 writel(tmp, i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_irq()
601 i2c_s3c_irq_nextbyte(i2c, status); in s3c24xx_i2c_irq()
616 static inline void s3c24xx_i2c_disable_bus(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_disable_bus() argument
621 tmp = readl(i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_disable_bus()
623 writel(tmp, i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_disable_bus()
626 tmp = readl(i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_disable_bus()
629 writel(tmp, i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_disable_bus()
638 static int s3c24xx_i2c_set_master(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_set_master() argument
644 iicstat = readl(i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_set_master()
660 static void s3c24xx_i2c_wait_idle(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_wait_idle() argument
669 dev_dbg(i2c->dev, "waiting for bus idle\n"); in s3c24xx_i2c_wait_idle()
682 iicstat = readl(i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_wait_idle()
685 iicstat = readl(i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_wait_idle()
702 iicstat = readl(i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_wait_idle()
706 dev_warn(i2c->dev, "timeout waiting for bus idle\n"); in s3c24xx_i2c_wait_idle()
714 static int s3c24xx_i2c_doxfer(struct s3c24xx_i2c *i2c, in s3c24xx_i2c_doxfer() argument
720 if (i2c->suspended) in s3c24xx_i2c_doxfer()
723 ret = s3c24xx_i2c_set_master(i2c); in s3c24xx_i2c_doxfer()
725 dev_err(i2c->dev, "cannot get bus (error %d)\n", ret); in s3c24xx_i2c_doxfer()
730 i2c->msg = msgs; in s3c24xx_i2c_doxfer()
731 i2c->msg_num = num; in s3c24xx_i2c_doxfer()
732 i2c->msg_ptr = 0; in s3c24xx_i2c_doxfer()
733 i2c->msg_idx = 0; in s3c24xx_i2c_doxfer()
734 i2c->state = STATE_START; in s3c24xx_i2c_doxfer()
736 s3c24xx_i2c_enable_irq(i2c); in s3c24xx_i2c_doxfer()
737 s3c24xx_i2c_message_start(i2c, msgs); in s3c24xx_i2c_doxfer()
739 if (i2c->quirks & QUIRK_POLL) { in s3c24xx_i2c_doxfer()
740 ret = i2c->msg_idx; in s3c24xx_i2c_doxfer()
743 dev_dbg(i2c->dev, "incomplete xfer (%d)\n", ret); in s3c24xx_i2c_doxfer()
748 timeout = wait_event_timeout(i2c->wait, i2c->msg_num == 0, HZ * 5); in s3c24xx_i2c_doxfer()
750 ret = i2c->msg_idx; in s3c24xx_i2c_doxfer()
756 dev_dbg(i2c->dev, "timeout\n"); in s3c24xx_i2c_doxfer()
758 dev_dbg(i2c->dev, "incomplete xfer (%d)\n", ret); in s3c24xx_i2c_doxfer()
761 if (i2c->quirks & QUIRK_HDMIPHY) in s3c24xx_i2c_doxfer()
764 s3c24xx_i2c_wait_idle(i2c); in s3c24xx_i2c_doxfer()
766 s3c24xx_i2c_disable_bus(i2c); in s3c24xx_i2c_doxfer()
769 i2c->state = STATE_IDLE; in s3c24xx_i2c_doxfer()
783 struct s3c24xx_i2c *i2c = (struct s3c24xx_i2c *)adap->algo_data; in s3c24xx_i2c_xfer() local
788 ret = clk_enable(i2c->clk); in s3c24xx_i2c_xfer()
794 ret = s3c24xx_i2c_doxfer(i2c, msgs, num); in s3c24xx_i2c_xfer()
797 clk_disable(i2c->clk); in s3c24xx_i2c_xfer()
802 dev_dbg(i2c->dev, "Retrying transmission (%d)\n", retry); in s3c24xx_i2c_xfer()
807 clk_disable(i2c->clk); in s3c24xx_i2c_xfer()
863 static int s3c24xx_i2c_clockrate(struct s3c24xx_i2c *i2c, unsigned int *got) in s3c24xx_i2c_clockrate() argument
865 struct s3c2410_platform_i2c *pdata = i2c->pdata; in s3c24xx_i2c_clockrate()
866 unsigned long clkin = clk_get_rate(i2c->clk); in s3c24xx_i2c_clockrate()
872 i2c->clkrate = clkin; in s3c24xx_i2c_clockrate()
875 dev_dbg(i2c->dev, "pdata desired frequency %lu\n", pdata->frequency); in s3c24xx_i2c_clockrate()
884 dev_err(i2c->dev, in s3c24xx_i2c_clockrate()
892 iiccon = readl(i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_clockrate()
899 if (i2c->quirks & QUIRK_POLL) in s3c24xx_i2c_clockrate()
902 writel(iiccon, i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_clockrate()
904 if (i2c->quirks & QUIRK_S3C2440) { in s3c24xx_i2c_clockrate()
917 dev_dbg(i2c->dev, "IICLC=%08lx\n", sda_delay); in s3c24xx_i2c_clockrate()
918 writel(sda_delay, i2c->regs + S3C2440_IICLC); in s3c24xx_i2c_clockrate()
931 struct s3c24xx_i2c *i2c = freq_to_i2c(nb); in s3c24xx_i2c_cpufreq_transition() local
936 delta_f = clk_get_rate(i2c->clk) - i2c->clkrate; in s3c24xx_i2c_cpufreq_transition()
945 i2c_lock_adapter(&i2c->adap); in s3c24xx_i2c_cpufreq_transition()
946 ret = s3c24xx_i2c_clockrate(i2c, &got); in s3c24xx_i2c_cpufreq_transition()
947 i2c_unlock_adapter(&i2c->adap); in s3c24xx_i2c_cpufreq_transition()
950 dev_err(i2c->dev, "cannot find frequency\n"); in s3c24xx_i2c_cpufreq_transition()
952 dev_info(i2c->dev, "setting freq %d\n", got); in s3c24xx_i2c_cpufreq_transition()
958 static inline int s3c24xx_i2c_register_cpufreq(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_register_cpufreq() argument
960 i2c->freq_transition.notifier_call = s3c24xx_i2c_cpufreq_transition; in s3c24xx_i2c_register_cpufreq()
962 return cpufreq_register_notifier(&i2c->freq_transition, in s3c24xx_i2c_register_cpufreq()
966 static inline void s3c24xx_i2c_deregister_cpufreq(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_deregister_cpufreq() argument
968 cpufreq_unregister_notifier(&i2c->freq_transition, in s3c24xx_i2c_deregister_cpufreq()
973 static inline int s3c24xx_i2c_register_cpufreq(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_register_cpufreq() argument
978 static inline void s3c24xx_i2c_deregister_cpufreq(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_deregister_cpufreq() argument
984 static int s3c24xx_i2c_parse_dt_gpio(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_parse_dt_gpio() argument
988 if (i2c->quirks & QUIRK_NO_GPIO) in s3c24xx_i2c_parse_dt_gpio()
992 gpio = of_get_gpio(i2c->dev->of_node, idx); in s3c24xx_i2c_parse_dt_gpio()
994 dev_err(i2c->dev, "invalid gpio[%d]: %d\n", idx, gpio); in s3c24xx_i2c_parse_dt_gpio()
997 i2c->gpios[idx] = gpio; in s3c24xx_i2c_parse_dt_gpio()
1001 dev_err(i2c->dev, "gpio [%d] request failed\n", gpio); in s3c24xx_i2c_parse_dt_gpio()
1009 gpio_free(i2c->gpios[idx]); in s3c24xx_i2c_parse_dt_gpio()
1013 static void s3c24xx_i2c_dt_gpio_free(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_dt_gpio_free() argument
1017 if (i2c->quirks & QUIRK_NO_GPIO) in s3c24xx_i2c_dt_gpio_free()
1021 gpio_free(i2c->gpios[idx]); in s3c24xx_i2c_dt_gpio_free()
1024 static int s3c24xx_i2c_parse_dt_gpio(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_parse_dt_gpio() argument
1029 static void s3c24xx_i2c_dt_gpio_free(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_dt_gpio_free() argument
1039 static int s3c24xx_i2c_init(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_init() argument
1046 pdata = i2c->pdata; in s3c24xx_i2c_init()
1050 writeb(pdata->slave_addr, i2c->regs + S3C2410_IICADD); in s3c24xx_i2c_init()
1052 dev_info(i2c->dev, "slave address 0x%02x\n", pdata->slave_addr); in s3c24xx_i2c_init()
1054 writel(0, i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_init()
1055 writel(0, i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_init()
1059 if (s3c24xx_i2c_clockrate(i2c, &freq) != 0) { in s3c24xx_i2c_init()
1060 dev_err(i2c->dev, "cannot meet bus frequency required\n"); in s3c24xx_i2c_init()
1066 dev_info(i2c->dev, "bus frequency set to %d KHz\n", freq); in s3c24xx_i2c_init()
1067 dev_dbg(i2c->dev, "S3C2410_IICCON=0x%02x\n", in s3c24xx_i2c_init()
1068 readl(i2c->regs + S3C2410_IICCON)); in s3c24xx_i2c_init()
1080 s3c24xx_i2c_parse_dt(struct device_node *np, struct s3c24xx_i2c *i2c) in s3c24xx_i2c_parse_dt() argument
1082 struct s3c2410_platform_i2c *pdata = i2c->pdata; in s3c24xx_i2c_parse_dt()
1102 i2c->sysreg = syscon_regmap_lookup_by_phandle(np, in s3c24xx_i2c_parse_dt()
1104 if (IS_ERR(i2c->sysreg)) in s3c24xx_i2c_parse_dt()
1107 regmap_update_bits(i2c->sysreg, EXYNOS5_SYS_I2C_CFG, BIT(id), 0); in s3c24xx_i2c_parse_dt()
1111 s3c24xx_i2c_parse_dt(struct device_node *np, struct s3c24xx_i2c *i2c) in s3c24xx_i2c_parse_dt() argument
1124 struct s3c24xx_i2c *i2c; in s3c24xx_i2c_probe() local
1137 i2c = devm_kzalloc(&pdev->dev, sizeof(struct s3c24xx_i2c), GFP_KERNEL); in s3c24xx_i2c_probe()
1138 if (!i2c) in s3c24xx_i2c_probe()
1141 i2c->pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); in s3c24xx_i2c_probe()
1142 if (!i2c->pdata) in s3c24xx_i2c_probe()
1145 i2c->quirks = s3c24xx_get_device_quirks(pdev); in s3c24xx_i2c_probe()
1146 i2c->sysreg = ERR_PTR(-ENOENT); in s3c24xx_i2c_probe()
1148 memcpy(i2c->pdata, pdata, sizeof(*pdata)); in s3c24xx_i2c_probe()
1150 s3c24xx_i2c_parse_dt(pdev->dev.of_node, i2c); in s3c24xx_i2c_probe()
1152 strlcpy(i2c->adap.name, "s3c2410-i2c", sizeof(i2c->adap.name)); in s3c24xx_i2c_probe()
1153 i2c->adap.owner = THIS_MODULE; in s3c24xx_i2c_probe()
1154 i2c->adap.algo = &s3c24xx_i2c_algorithm; in s3c24xx_i2c_probe()
1155 i2c->adap.retries = 2; in s3c24xx_i2c_probe()
1156 i2c->adap.class = I2C_CLASS_DEPRECATED; in s3c24xx_i2c_probe()
1157 i2c->tx_setup = 50; in s3c24xx_i2c_probe()
1159 init_waitqueue_head(&i2c->wait); in s3c24xx_i2c_probe()
1163 i2c->dev = &pdev->dev; in s3c24xx_i2c_probe()
1164 i2c->clk = devm_clk_get(&pdev->dev, "i2c"); in s3c24xx_i2c_probe()
1165 if (IS_ERR(i2c->clk)) { in s3c24xx_i2c_probe()
1170 dev_dbg(&pdev->dev, "clock source %p\n", i2c->clk); in s3c24xx_i2c_probe()
1176 i2c->regs = devm_ioremap_resource(&pdev->dev, res); in s3c24xx_i2c_probe()
1178 if (IS_ERR(i2c->regs)) in s3c24xx_i2c_probe()
1179 return PTR_ERR(i2c->regs); in s3c24xx_i2c_probe()
1182 i2c->regs, res); in s3c24xx_i2c_probe()
1186 i2c->adap.algo_data = i2c; in s3c24xx_i2c_probe()
1187 i2c->adap.dev.parent = &pdev->dev; in s3c24xx_i2c_probe()
1189 i2c->pctrl = devm_pinctrl_get_select_default(i2c->dev); in s3c24xx_i2c_probe()
1193 if (i2c->pdata->cfg_gpio) { in s3c24xx_i2c_probe()
1194 i2c->pdata->cfg_gpio(to_platform_device(i2c->dev)); in s3c24xx_i2c_probe()
1195 } else if (IS_ERR(i2c->pctrl) && s3c24xx_i2c_parse_dt_gpio(i2c)) { in s3c24xx_i2c_probe()
1201 clk_prepare_enable(i2c->clk); in s3c24xx_i2c_probe()
1202 ret = s3c24xx_i2c_init(i2c); in s3c24xx_i2c_probe()
1203 clk_disable(i2c->clk); in s3c24xx_i2c_probe()
1212 if (!(i2c->quirks & QUIRK_POLL)) { in s3c24xx_i2c_probe()
1213 i2c->irq = ret = platform_get_irq(pdev, 0); in s3c24xx_i2c_probe()
1216 clk_unprepare(i2c->clk); in s3c24xx_i2c_probe()
1220 ret = devm_request_irq(&pdev->dev, i2c->irq, s3c24xx_i2c_irq, 0, in s3c24xx_i2c_probe()
1221 dev_name(&pdev->dev), i2c); in s3c24xx_i2c_probe()
1224 dev_err(&pdev->dev, "cannot claim IRQ %d\n", i2c->irq); in s3c24xx_i2c_probe()
1225 clk_unprepare(i2c->clk); in s3c24xx_i2c_probe()
1230 ret = s3c24xx_i2c_register_cpufreq(i2c); in s3c24xx_i2c_probe()
1233 clk_unprepare(i2c->clk); in s3c24xx_i2c_probe()
1243 i2c->adap.nr = i2c->pdata->bus_num; in s3c24xx_i2c_probe()
1244 i2c->adap.dev.of_node = pdev->dev.of_node; in s3c24xx_i2c_probe()
1246 platform_set_drvdata(pdev, i2c); in s3c24xx_i2c_probe()
1250 ret = i2c_add_numbered_adapter(&i2c->adap); in s3c24xx_i2c_probe()
1254 s3c24xx_i2c_deregister_cpufreq(i2c); in s3c24xx_i2c_probe()
1255 clk_unprepare(i2c->clk); in s3c24xx_i2c_probe()
1259 pm_runtime_enable(&i2c->adap.dev); in s3c24xx_i2c_probe()
1261 dev_info(&pdev->dev, "%s: S3C I2C adapter\n", dev_name(&i2c->adap.dev)); in s3c24xx_i2c_probe()
1272 struct s3c24xx_i2c *i2c = platform_get_drvdata(pdev); in s3c24xx_i2c_remove() local
1274 clk_unprepare(i2c->clk); in s3c24xx_i2c_remove()
1276 pm_runtime_disable(&i2c->adap.dev); in s3c24xx_i2c_remove()
1279 s3c24xx_i2c_deregister_cpufreq(i2c); in s3c24xx_i2c_remove()
1281 i2c_del_adapter(&i2c->adap); in s3c24xx_i2c_remove()
1283 if (pdev->dev.of_node && IS_ERR(i2c->pctrl)) in s3c24xx_i2c_remove()
1284 s3c24xx_i2c_dt_gpio_free(i2c); in s3c24xx_i2c_remove()
1293 struct s3c24xx_i2c *i2c = platform_get_drvdata(pdev); in s3c24xx_i2c_suspend_noirq() local
1295 i2c->suspended = 1; in s3c24xx_i2c_suspend_noirq()
1297 if (!IS_ERR(i2c->sysreg)) in s3c24xx_i2c_suspend_noirq()
1298 regmap_read(i2c->sysreg, EXYNOS5_SYS_I2C_CFG, &i2c->sys_i2c_cfg); in s3c24xx_i2c_suspend_noirq()
1306 struct s3c24xx_i2c *i2c = platform_get_drvdata(pdev); in s3c24xx_i2c_resume_noirq() local
1309 if (!IS_ERR(i2c->sysreg)) in s3c24xx_i2c_resume_noirq()
1310 regmap_write(i2c->sysreg, EXYNOS5_SYS_I2C_CFG, i2c->sys_i2c_cfg); in s3c24xx_i2c_resume_noirq()
1312 ret = clk_enable(i2c->clk); in s3c24xx_i2c_resume_noirq()
1315 s3c24xx_i2c_init(i2c); in s3c24xx_i2c_resume_noirq()
1316 clk_disable(i2c->clk); in s3c24xx_i2c_resume_noirq()
1317 i2c->suspended = 0; in s3c24xx_i2c_resume_noirq()