1 // SPDX-License-Identifier: GPL-2.0
3 * Driver for the Texas Instruments DS90UB913 video serializer
5 * Based on a driver from Luca Ceresoli <luca@lucaceresoli.net>
7 * Copyright (c) 2019 Luca Ceresoli <luca@lucaceresoli.net>
8 * Copyright (c) 2023 Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
11 #include <linux/clk-provider.h>
12 #include <linux/clk.h>
13 #include <linux/delay.h>
14 #include <linux/fwnode.h>
15 #include <linux/gpio/driver.h>
16 #include <linux/i2c-atr.h>
17 #include <linux/i2c.h>
18 #include <linux/kernel.h>
19 #include <linux/module.h>
20 #include <linux/property.h>
21 #include <linux/regmap.h>
23 #include <media/i2c/ds90ub9xx.h>
24 #include <media/v4l2-subdev.h>
26 #define UB913_PAD_SINK 0
27 #define UB913_PAD_SOURCE 1
30 * UB913 has 4 gpios, but gpios 3 and 4 are reserved for external oscillator
31 * mode. Thus we only support 2 gpios for now.
33 #define UB913_NUM_GPIOS 2
35 #define UB913_REG_RESET_CTL 0x01
36 #define UB913_REG_RESET_CTL_DIGITAL_RESET_1 BIT(1)
37 #define UB913_REG_RESET_CTL_DIGITAL_RESET_0 BIT(0)
39 #define UB913_REG_GENERAL_CFG 0x03
40 #define UB913_REG_GENERAL_CFG_CRC_ERR_RESET BIT(5)
41 #define UB913_REG_GENERAL_CFG_PCLK_RISING BIT(0)
43 #define UB913_REG_MODE_SEL 0x05
44 #define UB913_REG_MODE_SEL_MODE_OVERRIDE BIT(5)
45 #define UB913_REG_MODE_SEL_MODE_UP_TO_DATE BIT(4)
46 #define UB913_REG_MODE_SEL_MODE_MASK GENMASK(3, 0)
48 #define UB913_REG_CRC_ERRORS_LSB 0x0a
49 #define UB913_REG_CRC_ERRORS_MSB 0x0b
51 #define UB913_REG_GENERAL_STATUS 0x0c
53 #define UB913_REG_GPIO_CFG(n) (0x0d + (n))
54 #define UB913_REG_GPIO_CFG_ENABLE(n) BIT(0 + (n) * 4)
55 #define UB913_REG_GPIO_CFG_DIR_INPUT(n) BIT(1 + (n) * 4)
56 #define UB913_REG_GPIO_CFG_REMOTE_EN(n) BIT(2 + (n) * 4)
57 #define UB913_REG_GPIO_CFG_OUT_VAL(n) BIT(3 + (n) * 4)
58 #define UB913_REG_GPIO_CFG_MASK(n) (0xf << ((n) * 4))
60 #define UB913_REG_SCL_HIGH_TIME 0x11
61 #define UB913_REG_SCL_LOW_TIME 0x12
63 #define UB913_REG_PLL_OVR 0x35
66 struct i2c_client *client;
67 struct regmap *regmap;
70 struct gpio_chip gpio_chip;
72 struct v4l2_subdev sd;
73 struct media_pad pads[2];
75 struct v4l2_async_notifier notifier;
77 struct v4l2_subdev *source_sd;
80 u64 enabled_source_streams;
82 struct clk_hw *clkout_clk_hw;
84 struct ds90ub9xx_platform_data *plat_data;
89 static inline struct ub913_data *sd_to_ub913(struct v4l2_subdev *sd)
91 return container_of(sd, struct ub913_data, sd);
94 struct ub913_format_info {
99 static const struct ub913_format_info ub913_formats[] = {
100 /* Only RAW10 with 8-bit payload is supported at the moment */
101 { .incode = MEDIA_BUS_FMT_YUYV8_2X8, .outcode = MEDIA_BUS_FMT_YUYV8_1X16 },
102 { .incode = MEDIA_BUS_FMT_UYVY8_2X8, .outcode = MEDIA_BUS_FMT_UYVY8_1X16 },
103 { .incode = MEDIA_BUS_FMT_VYUY8_2X8, .outcode = MEDIA_BUS_FMT_VYUY8_1X16 },
104 { .incode = MEDIA_BUS_FMT_YVYU8_2X8, .outcode = MEDIA_BUS_FMT_YVYU8_1X16 },
107 static const struct ub913_format_info *ub913_find_format(u32 incode)
111 for (i = 0; i < ARRAY_SIZE(ub913_formats); i++) {
112 if (ub913_formats[i].incode == incode)
113 return &ub913_formats[i];
119 static int ub913_read(const struct ub913_data *priv, u8 reg, u8 *val)
124 ret = regmap_read(priv->regmap, reg, &v);
126 dev_err(&priv->client->dev,
127 "Cannot read register 0x%02x: %d!\n", reg, ret);
135 static int ub913_write(const struct ub913_data *priv, u8 reg, u8 val)
139 ret = regmap_write(priv->regmap, reg, val);
141 dev_err(&priv->client->dev,
142 "Cannot write register 0x%02x: %d!\n", reg, ret);
150 static int ub913_gpio_get_direction(struct gpio_chip *gc, unsigned int offset)
152 return GPIO_LINE_DIRECTION_OUT;
155 static int ub913_gpio_direction_out(struct gpio_chip *gc, unsigned int offset,
158 struct ub913_data *priv = gpiochip_get_data(gc);
159 unsigned int reg_idx = offset / 2;
160 unsigned int field_idx = offset % 2;
162 return regmap_update_bits(priv->regmap, UB913_REG_GPIO_CFG(reg_idx),
163 UB913_REG_GPIO_CFG_MASK(field_idx),
164 UB913_REG_GPIO_CFG_ENABLE(field_idx) |
165 (value ? UB913_REG_GPIO_CFG_OUT_VAL(field_idx) :
169 static void ub913_gpio_set(struct gpio_chip *gc, unsigned int offset, int value)
171 ub913_gpio_direction_out(gc, offset, value);
174 static int ub913_gpio_of_xlate(struct gpio_chip *gc,
175 const struct of_phandle_args *gpiospec,
179 *flags = gpiospec->args[1];
181 return gpiospec->args[0];
184 static int ub913_gpiochip_probe(struct ub913_data *priv)
186 struct device *dev = &priv->client->dev;
187 struct gpio_chip *gc = &priv->gpio_chip;
190 /* Initialize GPIOs 0 and 1 to local control, tri-state */
191 ub913_write(priv, UB913_REG_GPIO_CFG(0), 0);
193 gc->label = dev_name(dev);
195 gc->owner = THIS_MODULE;
197 gc->can_sleep = true;
198 gc->ngpio = UB913_NUM_GPIOS;
199 gc->get_direction = ub913_gpio_get_direction;
200 gc->direction_output = ub913_gpio_direction_out;
201 gc->set = ub913_gpio_set;
202 gc->of_xlate = ub913_gpio_of_xlate;
203 gc->of_gpio_n_cells = 2;
205 ret = gpiochip_add_data(gc, priv);
207 dev_err(dev, "Failed to add GPIOs: %d\n", ret);
214 static void ub913_gpiochip_remove(struct ub913_data *priv)
216 gpiochip_remove(&priv->gpio_chip);
219 static const struct regmap_config ub913_regmap_config = {
223 .reg_format_endian = REGMAP_ENDIAN_DEFAULT,
224 .val_format_endian = REGMAP_ENDIAN_DEFAULT,
231 static int ub913_enable_streams(struct v4l2_subdev *sd,
232 struct v4l2_subdev_state *state, u32 pad,
235 struct ub913_data *priv = sd_to_ub913(sd);
239 sink_streams = v4l2_subdev_state_xlate_streams(state, UB913_PAD_SOURCE,
243 ret = v4l2_subdev_enable_streams(priv->source_sd, priv->source_sd_pad,
248 priv->enabled_source_streams |= streams_mask;
253 static int ub913_disable_streams(struct v4l2_subdev *sd,
254 struct v4l2_subdev_state *state, u32 pad,
257 struct ub913_data *priv = sd_to_ub913(sd);
261 sink_streams = v4l2_subdev_state_xlate_streams(state, UB913_PAD_SOURCE,
265 ret = v4l2_subdev_disable_streams(priv->source_sd, priv->source_sd_pad,
270 priv->enabled_source_streams &= ~streams_mask;
275 static int _ub913_set_routing(struct v4l2_subdev *sd,
276 struct v4l2_subdev_state *state,
277 struct v4l2_subdev_krouting *routing)
279 static const struct v4l2_mbus_framefmt in_format = {
282 .code = MEDIA_BUS_FMT_UYVY8_2X8,
283 .field = V4L2_FIELD_NONE,
284 .colorspace = V4L2_COLORSPACE_SRGB,
285 .ycbcr_enc = V4L2_YCBCR_ENC_601,
286 .quantization = V4L2_QUANTIZATION_LIM_RANGE,
287 .xfer_func = V4L2_XFER_FUNC_SRGB,
289 static const struct v4l2_mbus_framefmt out_format = {
292 .code = MEDIA_BUS_FMT_UYVY8_1X16,
293 .field = V4L2_FIELD_NONE,
294 .colorspace = V4L2_COLORSPACE_SRGB,
295 .ycbcr_enc = V4L2_YCBCR_ENC_601,
296 .quantization = V4L2_QUANTIZATION_LIM_RANGE,
297 .xfer_func = V4L2_XFER_FUNC_SRGB,
299 struct v4l2_subdev_stream_configs *stream_configs;
304 * Note: we can only support up to V4L2_FRAME_DESC_ENTRY_MAX, until
305 * frame desc is made dynamically allocated.
308 if (routing->num_routes > V4L2_FRAME_DESC_ENTRY_MAX)
311 ret = v4l2_subdev_routing_validate(sd, routing,
312 V4L2_SUBDEV_ROUTING_ONLY_1_TO_1);
316 ret = v4l2_subdev_set_routing(sd, state, routing);
320 stream_configs = &state->stream_configs;
322 for (i = 0; i < stream_configs->num_configs; i++) {
323 if (stream_configs->configs[i].pad == UB913_PAD_SINK)
324 stream_configs->configs[i].fmt = in_format;
326 stream_configs->configs[i].fmt = out_format;
332 static int ub913_set_routing(struct v4l2_subdev *sd,
333 struct v4l2_subdev_state *state,
334 enum v4l2_subdev_format_whence which,
335 struct v4l2_subdev_krouting *routing)
337 struct ub913_data *priv = sd_to_ub913(sd);
339 if (which == V4L2_SUBDEV_FORMAT_ACTIVE && priv->enabled_source_streams)
342 return _ub913_set_routing(sd, state, routing);
345 static int ub913_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
346 struct v4l2_mbus_frame_desc *fd)
348 struct ub913_data *priv = sd_to_ub913(sd);
349 const struct v4l2_subdev_krouting *routing;
350 struct v4l2_mbus_frame_desc source_fd;
351 struct v4l2_subdev_route *route;
352 struct v4l2_subdev_state *state;
355 if (pad != UB913_PAD_SOURCE)
358 ret = v4l2_subdev_call(priv->source_sd, pad, get_frame_desc,
359 priv->source_sd_pad, &source_fd);
363 memset(fd, 0, sizeof(*fd));
365 fd->type = V4L2_MBUS_FRAME_DESC_TYPE_PARALLEL;
367 state = v4l2_subdev_lock_and_get_active_state(sd);
369 routing = &state->routing;
371 for_each_active_route(routing, route) {
374 if (route->source_pad != pad)
377 for (i = 0; i < source_fd.num_entries; i++) {
378 if (source_fd.entry[i].stream == route->sink_stream)
382 if (i == source_fd.num_entries) {
383 dev_err(&priv->client->dev,
384 "Failed to find stream from source frame desc\n");
389 fd->entry[fd->num_entries].stream = route->source_stream;
390 fd->entry[fd->num_entries].flags = source_fd.entry[i].flags;
391 fd->entry[fd->num_entries].length = source_fd.entry[i].length;
392 fd->entry[fd->num_entries].pixelcode =
393 source_fd.entry[i].pixelcode;
399 v4l2_subdev_unlock_state(state);
404 static int ub913_set_fmt(struct v4l2_subdev *sd,
405 struct v4l2_subdev_state *state,
406 struct v4l2_subdev_format *format)
408 struct ub913_data *priv = sd_to_ub913(sd);
409 struct v4l2_mbus_framefmt *fmt;
410 const struct ub913_format_info *finfo;
412 if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE &&
413 priv->enabled_source_streams)
416 /* Source format is fully defined by the sink format, so not settable */
417 if (format->pad == UB913_PAD_SOURCE)
418 return v4l2_subdev_get_fmt(sd, state, format);
420 finfo = ub913_find_format(format->format.code);
422 finfo = &ub913_formats[0];
423 format->format.code = finfo->incode;
426 /* Set sink format */
427 fmt = v4l2_subdev_state_get_stream_format(state, format->pad,
432 *fmt = format->format;
434 /* Propagate to source format, and adjust the mbus code */
435 fmt = v4l2_subdev_state_get_opposite_stream_format(state, format->pad,
440 format->format.code = finfo->outcode;
442 *fmt = format->format;
447 static int ub913_init_cfg(struct v4l2_subdev *sd,
448 struct v4l2_subdev_state *state)
450 struct v4l2_subdev_route routes[] = {
452 .sink_pad = UB913_PAD_SINK,
454 .source_pad = UB913_PAD_SOURCE,
456 .flags = V4L2_SUBDEV_ROUTE_FL_ACTIVE,
460 struct v4l2_subdev_krouting routing = {
461 .num_routes = ARRAY_SIZE(routes),
465 return _ub913_set_routing(sd, state, &routing);
468 static int ub913_log_status(struct v4l2_subdev *sd)
470 struct ub913_data *priv = sd_to_ub913(sd);
471 struct device *dev = &priv->client->dev;
474 ub913_read(priv, UB913_REG_MODE_SEL, &v);
475 dev_info(dev, "MODE_SEL %#02x\n", v);
477 ub913_read(priv, UB913_REG_CRC_ERRORS_LSB, &v1);
478 ub913_read(priv, UB913_REG_CRC_ERRORS_MSB, &v2);
479 dev_info(dev, "CRC errors %u\n", v1 | (v2 << 8));
481 /* clear CRC errors */
482 ub913_read(priv, UB913_REG_GENERAL_CFG, &v);
483 ub913_write(priv, UB913_REG_GENERAL_CFG,
484 v | UB913_REG_GENERAL_CFG_CRC_ERR_RESET);
485 ub913_write(priv, UB913_REG_GENERAL_CFG, v);
487 ub913_read(priv, UB913_REG_GENERAL_STATUS, &v);
488 dev_info(dev, "GENERAL_STATUS %#02x\n", v);
490 ub913_read(priv, UB913_REG_PLL_OVR, &v);
491 dev_info(dev, "PLL_OVR %#02x\n", v);
496 static const struct v4l2_subdev_core_ops ub913_subdev_core_ops = {
497 .log_status = ub913_log_status,
500 static const struct v4l2_subdev_pad_ops ub913_pad_ops = {
501 .enable_streams = ub913_enable_streams,
502 .disable_streams = ub913_disable_streams,
503 .set_routing = ub913_set_routing,
504 .get_frame_desc = ub913_get_frame_desc,
505 .get_fmt = v4l2_subdev_get_fmt,
506 .set_fmt = ub913_set_fmt,
507 .init_cfg = ub913_init_cfg,
510 static const struct v4l2_subdev_ops ub913_subdev_ops = {
511 .core = &ub913_subdev_core_ops,
512 .pad = &ub913_pad_ops,
515 static const struct media_entity_operations ub913_entity_ops = {
516 .link_validate = v4l2_subdev_link_validate,
519 static int ub913_notify_bound(struct v4l2_async_notifier *notifier,
520 struct v4l2_subdev *source_subdev,
521 struct v4l2_async_connection *asd)
523 struct ub913_data *priv = sd_to_ub913(notifier->sd);
524 struct device *dev = &priv->client->dev;
527 ret = media_entity_get_fwnode_pad(&source_subdev->entity,
528 source_subdev->fwnode,
529 MEDIA_PAD_FL_SOURCE);
531 dev_err(dev, "Failed to find pad for %s\n",
532 source_subdev->name);
536 priv->source_sd = source_subdev;
537 priv->source_sd_pad = ret;
539 ret = media_create_pad_link(&source_subdev->entity, priv->source_sd_pad,
540 &priv->sd.entity, UB913_PAD_SINK,
541 MEDIA_LNK_FL_ENABLED |
542 MEDIA_LNK_FL_IMMUTABLE);
544 dev_err(dev, "Unable to link %s:%u -> %s:0\n",
545 source_subdev->name, priv->source_sd_pad,
553 static const struct v4l2_async_notifier_operations ub913_notify_ops = {
554 .bound = ub913_notify_bound,
557 static int ub913_v4l2_notifier_register(struct ub913_data *priv)
559 struct device *dev = &priv->client->dev;
560 struct v4l2_async_connection *asd;
561 struct fwnode_handle *ep_fwnode;
564 ep_fwnode = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev),
565 UB913_PAD_SINK, 0, 0);
567 dev_err(dev, "No graph endpoint\n");
571 v4l2_async_subdev_nf_init(&priv->notifier, &priv->sd);
573 asd = v4l2_async_nf_add_fwnode_remote(&priv->notifier, ep_fwnode,
574 struct v4l2_async_connection);
576 fwnode_handle_put(ep_fwnode);
579 dev_err(dev, "Failed to add subdev: %ld", PTR_ERR(asd));
580 v4l2_async_nf_cleanup(&priv->notifier);
584 priv->notifier.ops = &ub913_notify_ops;
586 ret = v4l2_async_nf_register(&priv->notifier);
588 dev_err(dev, "Failed to register subdev_notifier");
589 v4l2_async_nf_cleanup(&priv->notifier);
596 static void ub913_v4l2_nf_unregister(struct ub913_data *priv)
598 v4l2_async_nf_unregister(&priv->notifier);
599 v4l2_async_nf_cleanup(&priv->notifier);
602 static int ub913_register_clkout(struct ub913_data *priv)
604 struct device *dev = &priv->client->dev;
608 name = kasprintf(GFP_KERNEL, "ds90ub913.%s.clk_out", dev_name(dev));
612 priv->clkout_clk_hw = devm_clk_hw_register_fixed_factor(dev, name,
613 __clk_get_name(priv->clkin), 0, 1, 2);
617 if (IS_ERR(priv->clkout_clk_hw))
618 return dev_err_probe(dev, PTR_ERR(priv->clkout_clk_hw),
619 "Cannot register clkout hw\n");
621 ret = devm_of_clk_add_hw_provider(dev, of_clk_hw_simple_get,
622 priv->clkout_clk_hw);
624 return dev_err_probe(dev, ret,
625 "Cannot add OF clock provider\n");
630 static int ub913_i2c_master_init(struct ub913_data *priv)
633 u32 scl_high = 600 + 300; /* high period + rise time, ns */
634 u32 scl_low = 1300 + 300; /* low period + fall time, ns */
638 ref = clk_get_rate(priv->clkin) / 2;
640 scl_high = div64_u64((u64)scl_high * ref, 1000000000);
641 scl_low = div64_u64((u64)scl_low * ref, 1000000000);
643 ret = ub913_write(priv, UB913_REG_SCL_HIGH_TIME, scl_high);
647 ret = ub913_write(priv, UB913_REG_SCL_LOW_TIME, scl_low);
654 static int ub913_add_i2c_adapter(struct ub913_data *priv)
656 struct device *dev = &priv->client->dev;
657 struct fwnode_handle *i2c_handle;
660 i2c_handle = device_get_named_child_node(dev, "i2c");
664 ret = i2c_atr_add_adapter(priv->plat_data->atr, priv->plat_data->port,
667 fwnode_handle_put(i2c_handle);
675 static int ub913_parse_dt(struct ub913_data *priv)
677 struct device *dev = &priv->client->dev;
678 struct fwnode_handle *ep_fwnode;
681 ep_fwnode = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev),
682 UB913_PAD_SINK, 0, 0);
684 dev_err_probe(dev, -ENOENT, "No sink endpoint\n");
688 ret = fwnode_property_read_u32(ep_fwnode, "pclk-sample",
689 &priv->pclk_polarity);
691 fwnode_handle_put(ep_fwnode);
694 dev_err_probe(dev, ret, "failed to parse 'pclk-sample'\n");
701 static int ub913_hw_init(struct ub913_data *priv)
703 struct device *dev = &priv->client->dev;
709 ret = ub913_read(priv, UB913_REG_MODE_SEL, &v);
713 if (!(v & UB913_REG_MODE_SEL_MODE_UP_TO_DATE))
714 return dev_err_probe(dev, -ENODEV,
715 "Mode value not stabilized\n");
717 mode_override = v & UB913_REG_MODE_SEL_MODE_OVERRIDE;
718 mode = v & UB913_REG_MODE_SEL_MODE_MASK;
720 dev_dbg(dev, "mode from %s: %#x\n",
721 mode_override ? "reg" : "deserializer", mode);
723 ret = ub913_i2c_master_init(priv);
725 return dev_err_probe(dev, ret, "i2c master init failed\n");
727 ub913_read(priv, UB913_REG_GENERAL_CFG, &v);
728 v &= ~UB913_REG_GENERAL_CFG_PCLK_RISING;
729 v |= priv->pclk_polarity ? UB913_REG_GENERAL_CFG_PCLK_RISING : 0;
730 ub913_write(priv, UB913_REG_GENERAL_CFG, v);
735 static int ub913_subdev_init(struct ub913_data *priv)
737 struct device *dev = &priv->client->dev;
740 v4l2_i2c_subdev_init(&priv->sd, priv->client, &ub913_subdev_ops);
741 priv->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_STREAMS;
742 priv->sd.entity.function = MEDIA_ENT_F_VID_IF_BRIDGE;
743 priv->sd.entity.ops = &ub913_entity_ops;
745 priv->pads[0].flags = MEDIA_PAD_FL_SINK;
746 priv->pads[1].flags = MEDIA_PAD_FL_SOURCE;
748 ret = media_entity_pads_init(&priv->sd.entity, 2, priv->pads);
750 return dev_err_probe(dev, ret, "Failed to init pads\n");
752 priv->sd.fwnode = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev),
756 if (!priv->sd.fwnode) {
758 dev_err_probe(dev, ret, "Missing TX endpoint\n");
759 goto err_entity_cleanup;
762 ret = v4l2_subdev_init_finalize(&priv->sd);
766 ret = ub913_v4l2_notifier_register(priv);
768 dev_err_probe(dev, ret,
769 "v4l2 subdev notifier register failed\n");
770 goto err_subdev_cleanup;
773 ret = v4l2_async_register_subdev(&priv->sd);
775 dev_err_probe(dev, ret, "v4l2_async_register_subdev error\n");
776 goto err_unreg_notif;
782 ub913_v4l2_nf_unregister(priv);
784 v4l2_subdev_cleanup(&priv->sd);
786 fwnode_handle_put(priv->sd.fwnode);
788 media_entity_cleanup(&priv->sd.entity);
793 static void ub913_subdev_uninit(struct ub913_data *priv)
795 v4l2_async_unregister_subdev(&priv->sd);
796 ub913_v4l2_nf_unregister(priv);
797 v4l2_subdev_cleanup(&priv->sd);
798 fwnode_handle_put(priv->sd.fwnode);
799 media_entity_cleanup(&priv->sd.entity);
802 static int ub913_probe(struct i2c_client *client)
804 struct device *dev = &client->dev;
805 struct ub913_data *priv;
808 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
812 priv->client = client;
814 priv->plat_data = dev_get_platdata(&client->dev);
815 if (!priv->plat_data)
816 return dev_err_probe(dev, -ENODEV, "Platform data missing\n");
818 priv->regmap = devm_regmap_init_i2c(client, &ub913_regmap_config);
819 if (IS_ERR(priv->regmap))
820 return dev_err_probe(dev, PTR_ERR(priv->regmap),
821 "Failed to init regmap\n");
824 * ub913 can also work without ext clock, but that is not supported by
827 priv->clkin = devm_clk_get(dev, "clkin");
828 if (IS_ERR(priv->clkin))
829 return dev_err_probe(dev, PTR_ERR(priv->clkin),
830 "Cannot get CLKIN\n");
832 ret = ub913_parse_dt(priv);
836 ret = ub913_hw_init(priv);
840 ret = ub913_gpiochip_probe(priv);
842 return dev_err_probe(dev, ret, "Failed to init gpiochip\n");
844 ret = ub913_register_clkout(priv);
846 dev_err_probe(dev, ret, "Failed to register clkout\n");
847 goto err_gpiochip_remove;
850 ret = ub913_subdev_init(priv);
852 goto err_gpiochip_remove;
854 ret = ub913_add_i2c_adapter(priv);
856 dev_err_probe(dev, ret, "failed to add remote i2c adapter\n");
857 goto err_subdev_uninit;
863 ub913_subdev_uninit(priv);
865 ub913_gpiochip_remove(priv);
870 static void ub913_remove(struct i2c_client *client)
872 struct v4l2_subdev *sd = i2c_get_clientdata(client);
873 struct ub913_data *priv = sd_to_ub913(sd);
875 i2c_atr_del_adapter(priv->plat_data->atr, priv->plat_data->port);
877 ub913_subdev_uninit(priv);
879 ub913_gpiochip_remove(priv);
882 static const struct i2c_device_id ub913_id[] = { { "ds90ub913a-q1", 0 }, {} };
883 MODULE_DEVICE_TABLE(i2c, ub913_id);
885 static const struct of_device_id ub913_dt_ids[] = {
886 { .compatible = "ti,ds90ub913a-q1" },
889 MODULE_DEVICE_TABLE(of, ub913_dt_ids);
891 static struct i2c_driver ds90ub913_driver = {
892 .probe = ub913_probe,
893 .remove = ub913_remove,
894 .id_table = ub913_id,
896 .name = "ds90ub913a",
897 .of_match_table = ub913_dt_ids,
900 module_i2c_driver(ds90ub913_driver);
902 MODULE_LICENSE("GPL");
903 MODULE_DESCRIPTION("Texas Instruments DS90UB913 FPD-Link III Serializer Driver");
904 MODULE_AUTHOR("Luca Ceresoli <luca@lucaceresoli.net>");
905 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>");
906 MODULE_IMPORT_NS(I2C_ATR);