Lines Matching refs:i2c
137 static int i2c_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat);
167 static inline void s3c24xx_i2c_master_complete(struct s3c24xx_i2c *i2c, int ret) in s3c24xx_i2c_master_complete() argument
169 dev_dbg(i2c->dev, "master_complete %d\n", ret); in s3c24xx_i2c_master_complete()
171 i2c->msg_ptr = 0; in s3c24xx_i2c_master_complete()
172 i2c->msg = NULL; in s3c24xx_i2c_master_complete()
173 i2c->msg_idx++; in s3c24xx_i2c_master_complete()
174 i2c->msg_num = 0; in s3c24xx_i2c_master_complete()
176 i2c->msg_idx = ret; in s3c24xx_i2c_master_complete()
178 if (!(i2c->quirks & QUIRK_POLL)) in s3c24xx_i2c_master_complete()
179 wake_up(&i2c->wait); in s3c24xx_i2c_master_complete()
182 static inline void s3c24xx_i2c_disable_ack(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_disable_ack() argument
186 tmp = readl(i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_disable_ack()
187 writel(tmp & ~S3C2410_IICCON_ACKEN, i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_disable_ack()
190 static inline void s3c24xx_i2c_enable_ack(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_enable_ack() argument
194 tmp = readl(i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_enable_ack()
195 writel(tmp | S3C2410_IICCON_ACKEN, i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_enable_ack()
199 static inline void s3c24xx_i2c_disable_irq(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_disable_irq() argument
203 tmp = readl(i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_disable_irq()
204 writel(tmp & ~S3C2410_IICCON_IRQEN, i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_disable_irq()
207 static inline void s3c24xx_i2c_enable_irq(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_enable_irq() argument
211 tmp = readl(i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_enable_irq()
212 writel(tmp | S3C2410_IICCON_IRQEN, i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_enable_irq()
215 static bool is_ack(struct s3c24xx_i2c *i2c) in is_ack() argument
220 if (readl(i2c->regs + S3C2410_IICCON) in is_ack()
222 if (!(readl(i2c->regs + S3C2410_IICSTAT) in is_ack()
228 dev_err(i2c->dev, "ack was not received\n"); in is_ack()
235 static void s3c24xx_i2c_message_start(struct s3c24xx_i2c *i2c, in s3c24xx_i2c_message_start() argument
255 s3c24xx_i2c_enable_ack(i2c); in s3c24xx_i2c_message_start()
257 iiccon = readl(i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_message_start()
258 writel(stat, i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_message_start()
260 dev_dbg(i2c->dev, "START: %08lx to IICSTAT, %02x to DS\n", stat, addr); in s3c24xx_i2c_message_start()
261 writeb(addr, i2c->regs + S3C2410_IICDS); in s3c24xx_i2c_message_start()
267 ndelay(i2c->tx_setup); in s3c24xx_i2c_message_start()
269 dev_dbg(i2c->dev, "iiccon, %08lx\n", iiccon); in s3c24xx_i2c_message_start()
270 writel(iiccon, i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_message_start()
273 writel(stat, i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_message_start()
275 if (i2c->quirks & QUIRK_POLL) { in s3c24xx_i2c_message_start()
276 while ((i2c->msg_num != 0) && is_ack(i2c)) { in s3c24xx_i2c_message_start()
277 i2c_s3c_irq_nextbyte(i2c, stat); in s3c24xx_i2c_message_start()
278 stat = readl(i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_message_start()
281 dev_err(i2c->dev, "deal with arbitration loss\n"); in s3c24xx_i2c_message_start()
286 static inline void s3c24xx_i2c_stop(struct s3c24xx_i2c *i2c, int ret) in s3c24xx_i2c_stop() argument
288 unsigned long iicstat = readl(i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_stop()
290 dev_dbg(i2c->dev, "STOP\n"); in s3c24xx_i2c_stop()
326 if (i2c->quirks & QUIRK_HDMIPHY) { in s3c24xx_i2c_stop()
333 writel(iicstat, i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_stop()
335 i2c->state = STATE_STOP; in s3c24xx_i2c_stop()
337 s3c24xx_i2c_master_complete(i2c, ret); in s3c24xx_i2c_stop()
338 s3c24xx_i2c_disable_irq(i2c); in s3c24xx_i2c_stop()
349 static inline int is_lastmsg(struct s3c24xx_i2c *i2c) in is_lastmsg() argument
351 return i2c->msg_idx >= (i2c->msg_num - 1); in is_lastmsg()
357 static inline int is_msglast(struct s3c24xx_i2c *i2c) in is_msglast() argument
364 if (i2c->msg->flags & I2C_M_RECV_LEN && i2c->msg->len == 1) in is_msglast()
367 return i2c->msg_ptr == i2c->msg->len-1; in is_msglast()
373 static inline int is_msgend(struct s3c24xx_i2c *i2c) in is_msgend() argument
375 return i2c->msg_ptr >= i2c->msg->len; in is_msgend()
381 static int i2c_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat) in i2c_s3c_irq_nextbyte() argument
387 switch (i2c->state) { in i2c_s3c_irq_nextbyte()
390 dev_err(i2c->dev, "%s: called in STATE_IDLE\n", __func__); in i2c_s3c_irq_nextbyte()
394 dev_err(i2c->dev, "%s: called in STATE_STOP\n", __func__); in i2c_s3c_irq_nextbyte()
395 s3c24xx_i2c_disable_irq(i2c); in i2c_s3c_irq_nextbyte()
404 !(i2c->msg->flags & I2C_M_IGNORE_NAK)) { in i2c_s3c_irq_nextbyte()
406 dev_dbg(i2c->dev, "ack was not received\n"); in i2c_s3c_irq_nextbyte()
407 s3c24xx_i2c_stop(i2c, -ENXIO); in i2c_s3c_irq_nextbyte()
411 if (i2c->msg->flags & I2C_M_RD) in i2c_s3c_irq_nextbyte()
412 i2c->state = STATE_READ; in i2c_s3c_irq_nextbyte()
414 i2c->state = STATE_WRITE; in i2c_s3c_irq_nextbyte()
420 if (is_lastmsg(i2c) && i2c->msg->len == 0) { in i2c_s3c_irq_nextbyte()
421 s3c24xx_i2c_stop(i2c, 0); in i2c_s3c_irq_nextbyte()
425 if (i2c->state == STATE_READ) in i2c_s3c_irq_nextbyte()
438 if (!(i2c->msg->flags & I2C_M_IGNORE_NAK)) { in i2c_s3c_irq_nextbyte()
440 dev_dbg(i2c->dev, "WRITE: No Ack\n"); in i2c_s3c_irq_nextbyte()
442 s3c24xx_i2c_stop(i2c, -ECONNREFUSED); in i2c_s3c_irq_nextbyte()
449 if (!is_msgend(i2c)) { in i2c_s3c_irq_nextbyte()
450 byte = i2c->msg->buf[i2c->msg_ptr++]; in i2c_s3c_irq_nextbyte()
451 writeb(byte, i2c->regs + S3C2410_IICDS); in i2c_s3c_irq_nextbyte()
460 ndelay(i2c->tx_setup); in i2c_s3c_irq_nextbyte()
462 } else if (!is_lastmsg(i2c)) { in i2c_s3c_irq_nextbyte()
465 dev_dbg(i2c->dev, "WRITE: Next Message\n"); in i2c_s3c_irq_nextbyte()
467 i2c->msg_ptr = 0; in i2c_s3c_irq_nextbyte()
468 i2c->msg_idx++; in i2c_s3c_irq_nextbyte()
469 i2c->msg++; in i2c_s3c_irq_nextbyte()
472 if (i2c->msg->flags & I2C_M_NOSTART) { in i2c_s3c_irq_nextbyte()
474 if (i2c->msg->flags & I2C_M_RD) { in i2c_s3c_irq_nextbyte()
480 dev_dbg(i2c->dev, in i2c_s3c_irq_nextbyte()
482 s3c24xx_i2c_stop(i2c, -EINVAL); in i2c_s3c_irq_nextbyte()
489 s3c24xx_i2c_message_start(i2c, i2c->msg); in i2c_s3c_irq_nextbyte()
490 i2c->state = STATE_START; in i2c_s3c_irq_nextbyte()
495 s3c24xx_i2c_stop(i2c, 0); in i2c_s3c_irq_nextbyte()
505 byte = readb(i2c->regs + S3C2410_IICDS); in i2c_s3c_irq_nextbyte()
506 i2c->msg->buf[i2c->msg_ptr++] = byte; in i2c_s3c_irq_nextbyte()
509 if (i2c->msg->flags & I2C_M_RECV_LEN && i2c->msg->len == 1) in i2c_s3c_irq_nextbyte()
510 i2c->msg->len += byte; in i2c_s3c_irq_nextbyte()
512 if (is_msglast(i2c)) { in i2c_s3c_irq_nextbyte()
515 if (is_lastmsg(i2c)) in i2c_s3c_irq_nextbyte()
516 s3c24xx_i2c_disable_ack(i2c); in i2c_s3c_irq_nextbyte()
518 } else if (is_msgend(i2c)) { in i2c_s3c_irq_nextbyte()
523 if (is_lastmsg(i2c)) { in i2c_s3c_irq_nextbyte()
525 dev_dbg(i2c->dev, "READ: Send Stop\n"); in i2c_s3c_irq_nextbyte()
527 s3c24xx_i2c_stop(i2c, 0); in i2c_s3c_irq_nextbyte()
530 dev_dbg(i2c->dev, "READ: Next Transfer\n"); in i2c_s3c_irq_nextbyte()
532 i2c->msg_ptr = 0; in i2c_s3c_irq_nextbyte()
533 i2c->msg_idx++; in i2c_s3c_irq_nextbyte()
534 i2c->msg++; in i2c_s3c_irq_nextbyte()
544 tmp = readl(i2c->regs + S3C2410_IICCON); in i2c_s3c_irq_nextbyte()
546 writel(tmp, i2c->regs + S3C2410_IICCON); in i2c_s3c_irq_nextbyte()
556 struct s3c24xx_i2c *i2c = dev_id; in s3c24xx_i2c_irq() local
560 status = readl(i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_irq()
564 dev_err(i2c->dev, "deal with arbitration loss\n"); in s3c24xx_i2c_irq()
567 if (i2c->state == STATE_IDLE) { in s3c24xx_i2c_irq()
568 dev_dbg(i2c->dev, "IRQ: error i2c->state == IDLE\n"); in s3c24xx_i2c_irq()
570 tmp = readl(i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_irq()
572 writel(tmp, i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_irq()
580 i2c_s3c_irq_nextbyte(i2c, status); in s3c24xx_i2c_irq()
595 static inline void s3c24xx_i2c_disable_bus(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_disable_bus() argument
600 tmp = readl(i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_disable_bus()
602 writel(tmp, i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_disable_bus()
605 tmp = readl(i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_disable_bus()
608 writel(tmp, i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_disable_bus()
615 static int s3c24xx_i2c_set_master(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_set_master() argument
621 iicstat = readl(i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_set_master()
635 static void s3c24xx_i2c_wait_idle(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_wait_idle() argument
644 dev_dbg(i2c->dev, "waiting for bus idle\n"); in s3c24xx_i2c_wait_idle()
657 iicstat = readl(i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_wait_idle()
660 iicstat = readl(i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_wait_idle()
677 iicstat = readl(i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_wait_idle()
681 dev_warn(i2c->dev, "timeout waiting for bus idle\n"); in s3c24xx_i2c_wait_idle()
687 static int s3c24xx_i2c_doxfer(struct s3c24xx_i2c *i2c, in s3c24xx_i2c_doxfer() argument
693 ret = s3c24xx_i2c_set_master(i2c); in s3c24xx_i2c_doxfer()
695 dev_err(i2c->dev, "cannot get bus (error %d)\n", ret); in s3c24xx_i2c_doxfer()
700 i2c->msg = msgs; in s3c24xx_i2c_doxfer()
701 i2c->msg_num = num; in s3c24xx_i2c_doxfer()
702 i2c->msg_ptr = 0; in s3c24xx_i2c_doxfer()
703 i2c->msg_idx = 0; in s3c24xx_i2c_doxfer()
704 i2c->state = STATE_START; in s3c24xx_i2c_doxfer()
706 s3c24xx_i2c_enable_irq(i2c); in s3c24xx_i2c_doxfer()
707 s3c24xx_i2c_message_start(i2c, msgs); in s3c24xx_i2c_doxfer()
709 if (i2c->quirks & QUIRK_POLL) { in s3c24xx_i2c_doxfer()
710 ret = i2c->msg_idx; in s3c24xx_i2c_doxfer()
713 dev_dbg(i2c->dev, "incomplete xfer (%d)\n", ret); in s3c24xx_i2c_doxfer()
718 timeout = wait_event_timeout(i2c->wait, i2c->msg_num == 0, HZ * 5); in s3c24xx_i2c_doxfer()
720 ret = i2c->msg_idx; in s3c24xx_i2c_doxfer()
727 dev_dbg(i2c->dev, "timeout\n"); in s3c24xx_i2c_doxfer()
729 dev_dbg(i2c->dev, "incomplete xfer (%d)\n", ret); in s3c24xx_i2c_doxfer()
732 if (i2c->quirks & QUIRK_HDMIPHY) in s3c24xx_i2c_doxfer()
735 s3c24xx_i2c_wait_idle(i2c); in s3c24xx_i2c_doxfer()
737 s3c24xx_i2c_disable_bus(i2c); in s3c24xx_i2c_doxfer()
740 i2c->state = STATE_IDLE; in s3c24xx_i2c_doxfer()
752 struct s3c24xx_i2c *i2c = (struct s3c24xx_i2c *)adap->algo_data; in s3c24xx_i2c_xfer() local
756 ret = clk_enable(i2c->clk); in s3c24xx_i2c_xfer()
762 ret = s3c24xx_i2c_doxfer(i2c, msgs, num); in s3c24xx_i2c_xfer()
765 clk_disable(i2c->clk); in s3c24xx_i2c_xfer()
769 dev_dbg(i2c->dev, "Retrying transmission (%d)\n", retry); in s3c24xx_i2c_xfer()
774 clk_disable(i2c->clk); in s3c24xx_i2c_xfer()
824 static int s3c24xx_i2c_clockrate(struct s3c24xx_i2c *i2c, unsigned int *got) in s3c24xx_i2c_clockrate() argument
826 struct s3c2410_platform_i2c *pdata = i2c->pdata; in s3c24xx_i2c_clockrate()
827 unsigned long clkin = clk_get_rate(i2c->clk); in s3c24xx_i2c_clockrate()
833 i2c->clkrate = clkin; in s3c24xx_i2c_clockrate()
836 dev_dbg(i2c->dev, "pdata desired frequency %lu\n", pdata->frequency); in s3c24xx_i2c_clockrate()
845 dev_err(i2c->dev, in s3c24xx_i2c_clockrate()
853 iiccon = readl(i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_clockrate()
860 if (i2c->quirks & QUIRK_POLL) in s3c24xx_i2c_clockrate()
863 writel(iiccon, i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_clockrate()
865 if (i2c->quirks & QUIRK_S3C2440) { in s3c24xx_i2c_clockrate()
878 dev_dbg(i2c->dev, "IICLC=%08lx\n", sda_delay); in s3c24xx_i2c_clockrate()
879 writel(sda_delay, i2c->regs + S3C2440_IICLC); in s3c24xx_i2c_clockrate()
886 static int s3c24xx_i2c_parse_dt_gpio(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_parse_dt_gpio() argument
890 if (i2c->quirks & QUIRK_NO_GPIO) in s3c24xx_i2c_parse_dt_gpio()
894 i2c->gpios[i] = devm_gpiod_get_index(i2c->dev, NULL, in s3c24xx_i2c_parse_dt_gpio()
896 if (IS_ERR(i2c->gpios[i])) { in s3c24xx_i2c_parse_dt_gpio()
897 dev_err(i2c->dev, "i2c gpio invalid at index %d\n", i); in s3c24xx_i2c_parse_dt_gpio()
905 static int s3c24xx_i2c_parse_dt_gpio(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_parse_dt_gpio() argument
914 static int s3c24xx_i2c_init(struct s3c24xx_i2c *i2c) in s3c24xx_i2c_init() argument
921 pdata = i2c->pdata; in s3c24xx_i2c_init()
925 writeb(pdata->slave_addr, i2c->regs + S3C2410_IICADD); in s3c24xx_i2c_init()
927 dev_info(i2c->dev, "slave address 0x%02x\n", pdata->slave_addr); in s3c24xx_i2c_init()
929 writel(0, i2c->regs + S3C2410_IICCON); in s3c24xx_i2c_init()
930 writel(0, i2c->regs + S3C2410_IICSTAT); in s3c24xx_i2c_init()
934 if (s3c24xx_i2c_clockrate(i2c, &freq) != 0) { in s3c24xx_i2c_init()
935 dev_err(i2c->dev, "cannot meet bus frequency required\n"); in s3c24xx_i2c_init()
941 dev_info(i2c->dev, "bus frequency set to %d KHz\n", freq); in s3c24xx_i2c_init()
942 dev_dbg(i2c->dev, "S3C2410_IICCON=0x%02x\n", in s3c24xx_i2c_init()
943 readl(i2c->regs + S3C2410_IICCON)); in s3c24xx_i2c_init()
953 s3c24xx_i2c_parse_dt(struct device_node *np, struct s3c24xx_i2c *i2c) in s3c24xx_i2c_parse_dt() argument
955 struct s3c2410_platform_i2c *pdata = i2c->pdata; in s3c24xx_i2c_parse_dt()
975 i2c->sysreg = syscon_regmap_lookup_by_phandle(np, in s3c24xx_i2c_parse_dt()
977 if (IS_ERR(i2c->sysreg)) in s3c24xx_i2c_parse_dt()
980 regmap_update_bits(i2c->sysreg, EXYNOS5_SYS_I2C_CFG, BIT(id), 0); in s3c24xx_i2c_parse_dt()
984 s3c24xx_i2c_parse_dt(struct device_node *np, struct s3c24xx_i2c *i2c) { } in s3c24xx_i2c_parse_dt() argument
989 struct s3c24xx_i2c *i2c; in s3c24xx_i2c_probe() local
1002 i2c = devm_kzalloc(&pdev->dev, sizeof(struct s3c24xx_i2c), GFP_KERNEL); in s3c24xx_i2c_probe()
1003 if (!i2c) in s3c24xx_i2c_probe()
1006 i2c->pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); in s3c24xx_i2c_probe()
1007 if (!i2c->pdata) in s3c24xx_i2c_probe()
1010 i2c->quirks = s3c24xx_get_device_quirks(pdev); in s3c24xx_i2c_probe()
1011 i2c->sysreg = ERR_PTR(-ENOENT); in s3c24xx_i2c_probe()
1013 memcpy(i2c->pdata, pdata, sizeof(*pdata)); in s3c24xx_i2c_probe()
1015 s3c24xx_i2c_parse_dt(pdev->dev.of_node, i2c); in s3c24xx_i2c_probe()
1017 strscpy(i2c->adap.name, "s3c2410-i2c", sizeof(i2c->adap.name)); in s3c24xx_i2c_probe()
1018 i2c->adap.owner = THIS_MODULE; in s3c24xx_i2c_probe()
1019 i2c->adap.algo = &s3c24xx_i2c_algorithm; in s3c24xx_i2c_probe()
1020 i2c->adap.retries = 2; in s3c24xx_i2c_probe()
1021 i2c->adap.class = I2C_CLASS_DEPRECATED; in s3c24xx_i2c_probe()
1022 i2c->tx_setup = 50; in s3c24xx_i2c_probe()
1024 init_waitqueue_head(&i2c->wait); in s3c24xx_i2c_probe()
1027 i2c->dev = &pdev->dev; in s3c24xx_i2c_probe()
1028 i2c->clk = devm_clk_get(&pdev->dev, "i2c"); in s3c24xx_i2c_probe()
1029 if (IS_ERR(i2c->clk)) { in s3c24xx_i2c_probe()
1034 dev_dbg(&pdev->dev, "clock source %p\n", i2c->clk); in s3c24xx_i2c_probe()
1038 i2c->regs = devm_ioremap_resource(&pdev->dev, res); in s3c24xx_i2c_probe()
1040 if (IS_ERR(i2c->regs)) in s3c24xx_i2c_probe()
1041 return PTR_ERR(i2c->regs); in s3c24xx_i2c_probe()
1044 i2c->regs, res); in s3c24xx_i2c_probe()
1047 i2c->adap.algo_data = i2c; in s3c24xx_i2c_probe()
1048 i2c->adap.dev.parent = &pdev->dev; in s3c24xx_i2c_probe()
1049 i2c->pctrl = devm_pinctrl_get_select_default(i2c->dev); in s3c24xx_i2c_probe()
1052 if (i2c->pdata->cfg_gpio) in s3c24xx_i2c_probe()
1053 i2c->pdata->cfg_gpio(to_platform_device(i2c->dev)); in s3c24xx_i2c_probe()
1054 else if (IS_ERR(i2c->pctrl) && s3c24xx_i2c_parse_dt_gpio(i2c)) in s3c24xx_i2c_probe()
1058 ret = clk_prepare_enable(i2c->clk); in s3c24xx_i2c_probe()
1064 ret = s3c24xx_i2c_init(i2c); in s3c24xx_i2c_probe()
1065 clk_disable(i2c->clk); in s3c24xx_i2c_probe()
1068 clk_unprepare(i2c->clk); in s3c24xx_i2c_probe()
1076 if (!(i2c->quirks & QUIRK_POLL)) { in s3c24xx_i2c_probe()
1077 i2c->irq = ret = platform_get_irq(pdev, 0); in s3c24xx_i2c_probe()
1080 clk_unprepare(i2c->clk); in s3c24xx_i2c_probe()
1084 ret = devm_request_irq(&pdev->dev, i2c->irq, s3c24xx_i2c_irq, in s3c24xx_i2c_probe()
1085 0, dev_name(&pdev->dev), i2c); in s3c24xx_i2c_probe()
1087 dev_err(&pdev->dev, "cannot claim IRQ %d\n", i2c->irq); in s3c24xx_i2c_probe()
1088 clk_unprepare(i2c->clk); in s3c24xx_i2c_probe()
1099 i2c->adap.nr = i2c->pdata->bus_num; in s3c24xx_i2c_probe()
1100 i2c->adap.dev.of_node = pdev->dev.of_node; in s3c24xx_i2c_probe()
1102 platform_set_drvdata(pdev, i2c); in s3c24xx_i2c_probe()
1106 ret = i2c_add_numbered_adapter(&i2c->adap); in s3c24xx_i2c_probe()
1109 clk_unprepare(i2c->clk); in s3c24xx_i2c_probe()
1113 dev_info(&pdev->dev, "%s: S3C I2C adapter\n", dev_name(&i2c->adap.dev)); in s3c24xx_i2c_probe()
1119 struct s3c24xx_i2c *i2c = platform_get_drvdata(pdev); in s3c24xx_i2c_remove() local
1121 clk_unprepare(i2c->clk); in s3c24xx_i2c_remove()
1125 i2c_del_adapter(&i2c->adap); in s3c24xx_i2c_remove()
1133 struct s3c24xx_i2c *i2c = dev_get_drvdata(dev); in s3c24xx_i2c_suspend_noirq() local
1135 i2c_mark_adapter_suspended(&i2c->adap); in s3c24xx_i2c_suspend_noirq()
1137 if (!IS_ERR(i2c->sysreg)) in s3c24xx_i2c_suspend_noirq()
1138 regmap_read(i2c->sysreg, EXYNOS5_SYS_I2C_CFG, &i2c->sys_i2c_cfg); in s3c24xx_i2c_suspend_noirq()
1145 struct s3c24xx_i2c *i2c = dev_get_drvdata(dev); in s3c24xx_i2c_resume_noirq() local
1148 if (!IS_ERR(i2c->sysreg)) in s3c24xx_i2c_resume_noirq()
1149 regmap_write(i2c->sysreg, EXYNOS5_SYS_I2C_CFG, i2c->sys_i2c_cfg); in s3c24xx_i2c_resume_noirq()
1151 ret = clk_enable(i2c->clk); in s3c24xx_i2c_resume_noirq()
1154 s3c24xx_i2c_init(i2c); in s3c24xx_i2c_resume_noirq()
1155 clk_disable(i2c->clk); in s3c24xx_i2c_resume_noirq()
1156 i2c_mark_adapter_resumed(&i2c->adap); in s3c24xx_i2c_resume_noirq()