Lines Matching full:csi2rx
104 static void csi2rx_reset(struct csi2rx_priv *csi2rx) in csi2rx_reset() argument
107 csi2rx->base + CSI2RX_SOFT_RESET_REG); in csi2rx_reset()
111 writel(0, csi2rx->base + CSI2RX_SOFT_RESET_REG); in csi2rx_reset()
114 static int csi2rx_configure_ext_dphy(struct csi2rx_priv *csi2rx) in csi2rx_configure_ext_dphy() argument
119 ret = phy_power_on(csi2rx->dphy); in csi2rx_configure_ext_dphy()
123 ret = phy_configure(csi2rx->dphy, &opts); in csi2rx_configure_ext_dphy()
125 phy_power_off(csi2rx->dphy); in csi2rx_configure_ext_dphy()
132 static int csi2rx_start(struct csi2rx_priv *csi2rx) in csi2rx_start() argument
139 ret = clk_prepare_enable(csi2rx->p_clk); in csi2rx_start()
143 reset_control_deassert(csi2rx->p_rst); in csi2rx_start()
144 csi2rx_reset(csi2rx); in csi2rx_start()
146 reg = csi2rx->num_lanes << 8; in csi2rx_start()
147 for (i = 0; i < csi2rx->num_lanes; i++) { in csi2rx_start()
148 reg |= CSI2RX_STATIC_CFG_DLANE_MAP(i, csi2rx->lanes[i]); in csi2rx_start()
149 set_bit(csi2rx->lanes[i], &lanes_used); in csi2rx_start()
158 for (i = csi2rx->num_lanes; i < csi2rx->max_lanes; i++) { in csi2rx_start()
160 csi2rx->max_lanes); in csi2rx_start()
165 writel(reg, csi2rx->base + CSI2RX_STATIC_CFG_REG); in csi2rx_start()
167 ret = v4l2_subdev_call(csi2rx->source_subdev, video, s_stream, true); in csi2rx_start()
172 if (csi2rx->dphy) { in csi2rx_start()
174 for (i = 0; i < csi2rx->num_lanes; i++) { in csi2rx_start()
175 reg |= CSI2RX_DPHY_DL_EN(csi2rx->lanes[i] - 1); in csi2rx_start()
176 reg |= CSI2RX_DPHY_DL_RST(csi2rx->lanes[i] - 1); in csi2rx_start()
179 writel(reg, csi2rx->base + CSI2RX_DPHY_LANE_CTRL_REG); in csi2rx_start()
192 for (i = 0; i < csi2rx->max_streams; i++) { in csi2rx_start()
193 ret = clk_prepare_enable(csi2rx->pixel_clk[i]); in csi2rx_start()
197 reset_control_deassert(csi2rx->pixel_rst[i]); in csi2rx_start()
200 csi2rx->base + CSI2RX_STREAM_CFG_REG(i)); in csi2rx_start()
204 csi2rx->base + CSI2RX_STREAM_DATA_CFG_REG(i)); in csi2rx_start()
207 csi2rx->base + CSI2RX_STREAM_CTRL_REG(i)); in csi2rx_start()
210 ret = clk_prepare_enable(csi2rx->sys_clk); in csi2rx_start()
214 reset_control_deassert(csi2rx->sys_rst); in csi2rx_start()
216 if (csi2rx->dphy) { in csi2rx_start()
217 ret = csi2rx_configure_ext_dphy(csi2rx); in csi2rx_start()
219 dev_err(csi2rx->dev, in csi2rx_start()
225 clk_disable_unprepare(csi2rx->p_clk); in csi2rx_start()
230 clk_disable_unprepare(csi2rx->sys_clk); in csi2rx_start()
233 reset_control_assert(csi2rx->pixel_rst[i - 1]); in csi2rx_start()
234 clk_disable_unprepare(csi2rx->pixel_clk[i - 1]); in csi2rx_start()
238 clk_disable_unprepare(csi2rx->p_clk); in csi2rx_start()
243 static void csi2rx_stop(struct csi2rx_priv *csi2rx) in csi2rx_stop() argument
247 clk_prepare_enable(csi2rx->p_clk); in csi2rx_stop()
248 reset_control_assert(csi2rx->sys_rst); in csi2rx_stop()
249 clk_disable_unprepare(csi2rx->sys_clk); in csi2rx_stop()
251 for (i = 0; i < csi2rx->max_streams; i++) { in csi2rx_stop()
252 writel(0, csi2rx->base + CSI2RX_STREAM_CTRL_REG(i)); in csi2rx_stop()
254 reset_control_assert(csi2rx->pixel_rst[i]); in csi2rx_stop()
255 clk_disable_unprepare(csi2rx->pixel_clk[i]); in csi2rx_stop()
258 reset_control_assert(csi2rx->p_rst); in csi2rx_stop()
259 clk_disable_unprepare(csi2rx->p_clk); in csi2rx_stop()
261 if (v4l2_subdev_call(csi2rx->source_subdev, video, s_stream, false)) in csi2rx_stop()
262 dev_warn(csi2rx->dev, "Couldn't disable our subdev\n"); in csi2rx_stop()
264 if (csi2rx->dphy) { in csi2rx_stop()
265 writel(0, csi2rx->base + CSI2RX_DPHY_LANE_CTRL_REG); in csi2rx_stop()
267 if (phy_power_off(csi2rx->dphy)) in csi2rx_stop()
268 dev_warn(csi2rx->dev, "Couldn't power off DPHY\n"); in csi2rx_stop()
274 struct csi2rx_priv *csi2rx = v4l2_subdev_to_csi2rx(subdev); in csi2rx_s_stream() local
277 mutex_lock(&csi2rx->lock); in csi2rx_s_stream()
284 if (!csi2rx->count) { in csi2rx_s_stream()
285 ret = csi2rx_start(csi2rx); in csi2rx_s_stream()
290 csi2rx->count++; in csi2rx_s_stream()
292 csi2rx->count--; in csi2rx_s_stream()
297 if (!csi2rx->count) in csi2rx_s_stream()
298 csi2rx_stop(csi2rx); in csi2rx_s_stream()
302 mutex_unlock(&csi2rx->lock); in csi2rx_s_stream()
319 struct csi2rx_priv *csi2rx = v4l2_subdev_to_csi2rx(subdev); in csi2rx_async_bound() local
321 csi2rx->source_pad = media_entity_get_fwnode_pad(&s_subdev->entity, in csi2rx_async_bound()
324 if (csi2rx->source_pad < 0) { in csi2rx_async_bound()
325 dev_err(csi2rx->dev, "Couldn't find output pad for subdev %s\n", in csi2rx_async_bound()
327 return csi2rx->source_pad; in csi2rx_async_bound()
330 csi2rx->source_subdev = s_subdev; in csi2rx_async_bound()
332 dev_dbg(csi2rx->dev, "Bound %s pad: %d\n", s_subdev->name, in csi2rx_async_bound()
333 csi2rx->source_pad); in csi2rx_async_bound()
335 return media_create_pad_link(&csi2rx->source_subdev->entity, in csi2rx_async_bound()
336 csi2rx->source_pad, in csi2rx_async_bound()
337 &csi2rx->subdev.entity, 0, in csi2rx_async_bound()
346 static int csi2rx_get_resources(struct csi2rx_priv *csi2rx, in csi2rx_get_resources() argument
353 csi2rx->base = devm_platform_ioremap_resource(pdev, 0); in csi2rx_get_resources()
354 if (IS_ERR(csi2rx->base)) in csi2rx_get_resources()
355 return PTR_ERR(csi2rx->base); in csi2rx_get_resources()
357 csi2rx->sys_clk = devm_clk_get(&pdev->dev, "sys_clk"); in csi2rx_get_resources()
358 if (IS_ERR(csi2rx->sys_clk)) { in csi2rx_get_resources()
360 return PTR_ERR(csi2rx->sys_clk); in csi2rx_get_resources()
363 csi2rx->p_clk = devm_clk_get(&pdev->dev, "p_clk"); in csi2rx_get_resources()
364 if (IS_ERR(csi2rx->p_clk)) { in csi2rx_get_resources()
366 return PTR_ERR(csi2rx->p_clk); in csi2rx_get_resources()
369 csi2rx->sys_rst = devm_reset_control_get_optional_exclusive(&pdev->dev, in csi2rx_get_resources()
371 if (IS_ERR(csi2rx->sys_rst)) in csi2rx_get_resources()
372 return PTR_ERR(csi2rx->sys_rst); in csi2rx_get_resources()
374 csi2rx->p_rst = devm_reset_control_get_optional_exclusive(&pdev->dev, in csi2rx_get_resources()
376 if (IS_ERR(csi2rx->p_rst)) in csi2rx_get_resources()
377 return PTR_ERR(csi2rx->p_rst); in csi2rx_get_resources()
379 csi2rx->dphy = devm_phy_optional_get(&pdev->dev, "dphy"); in csi2rx_get_resources()
380 if (IS_ERR(csi2rx->dphy)) { in csi2rx_get_resources()
382 return PTR_ERR(csi2rx->dphy); in csi2rx_get_resources()
385 ret = clk_prepare_enable(csi2rx->p_clk); in csi2rx_get_resources()
391 dev_cfg = readl(csi2rx->base + CSI2RX_DEVICE_CFG_REG); in csi2rx_get_resources()
392 clk_disable_unprepare(csi2rx->p_clk); in csi2rx_get_resources()
394 csi2rx->max_lanes = dev_cfg & 7; in csi2rx_get_resources()
395 if (csi2rx->max_lanes > CSI2RX_LANES_MAX) { in csi2rx_get_resources()
397 csi2rx->max_lanes); in csi2rx_get_resources()
401 csi2rx->max_streams = (dev_cfg >> 4) & 7; in csi2rx_get_resources()
402 if (csi2rx->max_streams > CSI2RX_STREAMS_MAX) { in csi2rx_get_resources()
404 csi2rx->max_streams); in csi2rx_get_resources()
408 csi2rx->has_internal_dphy = dev_cfg & BIT(3) ? true : false; in csi2rx_get_resources()
414 if (!csi2rx->dphy && csi2rx->has_internal_dphy) { in csi2rx_get_resources()
419 for (i = 0; i < csi2rx->max_streams; i++) { in csi2rx_get_resources()
423 csi2rx->pixel_clk[i] = devm_clk_get(&pdev->dev, name); in csi2rx_get_resources()
424 if (IS_ERR(csi2rx->pixel_clk[i])) { in csi2rx_get_resources()
426 return PTR_ERR(csi2rx->pixel_clk[i]); in csi2rx_get_resources()
430 csi2rx->pixel_rst[i] = in csi2rx_get_resources()
433 if (IS_ERR(csi2rx->pixel_rst[i])) in csi2rx_get_resources()
434 return PTR_ERR(csi2rx->pixel_rst[i]); in csi2rx_get_resources()
440 static int csi2rx_parse_dt(struct csi2rx_priv *csi2rx) in csi2rx_parse_dt() argument
448 ep = of_graph_get_endpoint_by_regs(csi2rx->dev->of_node, 0, 0); in csi2rx_parse_dt()
455 dev_err(csi2rx->dev, "Could not parse v4l2 endpoint\n"); in csi2rx_parse_dt()
461 dev_err(csi2rx->dev, "Unsupported media bus type: 0x%x\n", in csi2rx_parse_dt()
467 memcpy(csi2rx->lanes, v4l2_ep.bus.mipi_csi2.data_lanes, in csi2rx_parse_dt()
468 sizeof(csi2rx->lanes)); in csi2rx_parse_dt()
469 csi2rx->num_lanes = v4l2_ep.bus.mipi_csi2.num_data_lanes; in csi2rx_parse_dt()
470 if (csi2rx->num_lanes > csi2rx->max_lanes) { in csi2rx_parse_dt()
471 dev_err(csi2rx->dev, "Unsupported number of data-lanes: %d\n", in csi2rx_parse_dt()
472 csi2rx->num_lanes); in csi2rx_parse_dt()
477 v4l2_async_subdev_nf_init(&csi2rx->notifier, &csi2rx->subdev); in csi2rx_parse_dt()
479 asd = v4l2_async_nf_add_fwnode_remote(&csi2rx->notifier, fwh, in csi2rx_parse_dt()
483 v4l2_async_nf_cleanup(&csi2rx->notifier); in csi2rx_parse_dt()
487 csi2rx->notifier.ops = &csi2rx_notifier_ops; in csi2rx_parse_dt()
489 ret = v4l2_async_nf_register(&csi2rx->notifier); in csi2rx_parse_dt()
491 v4l2_async_nf_cleanup(&csi2rx->notifier); in csi2rx_parse_dt()
498 struct csi2rx_priv *csi2rx; in csi2rx_probe() local
502 csi2rx = kzalloc(sizeof(*csi2rx), GFP_KERNEL); in csi2rx_probe()
503 if (!csi2rx) in csi2rx_probe()
505 platform_set_drvdata(pdev, csi2rx); in csi2rx_probe()
506 csi2rx->dev = &pdev->dev; in csi2rx_probe()
507 mutex_init(&csi2rx->lock); in csi2rx_probe()
509 ret = csi2rx_get_resources(csi2rx, pdev); in csi2rx_probe()
513 ret = csi2rx_parse_dt(csi2rx); in csi2rx_probe()
517 csi2rx->subdev.owner = THIS_MODULE; in csi2rx_probe()
518 csi2rx->subdev.dev = &pdev->dev; in csi2rx_probe()
519 v4l2_subdev_init(&csi2rx->subdev, &csi2rx_subdev_ops); in csi2rx_probe()
520 v4l2_set_subdevdata(&csi2rx->subdev, &pdev->dev); in csi2rx_probe()
521 snprintf(csi2rx->subdev.name, V4L2_SUBDEV_NAME_SIZE, "%s.%s", in csi2rx_probe()
525 csi2rx->subdev.entity.function = MEDIA_ENT_F_VID_IF_BRIDGE; in csi2rx_probe()
526 csi2rx->pads[CSI2RX_PAD_SINK].flags = MEDIA_PAD_FL_SINK; in csi2rx_probe()
528 csi2rx->pads[i].flags = MEDIA_PAD_FL_SOURCE; in csi2rx_probe()
530 ret = media_entity_pads_init(&csi2rx->subdev.entity, CSI2RX_PAD_MAX, in csi2rx_probe()
531 csi2rx->pads); in csi2rx_probe()
535 ret = v4l2_async_register_subdev(&csi2rx->subdev); in csi2rx_probe()
540 "Probed CSI2RX with %u/%u lanes, %u streams, %s D-PHY\n", in csi2rx_probe()
541 csi2rx->num_lanes, csi2rx->max_lanes, csi2rx->max_streams, in csi2rx_probe()
542 csi2rx->dphy ? "external" : in csi2rx_probe()
543 csi2rx->has_internal_dphy ? "internal" : "no"); in csi2rx_probe()
548 v4l2_async_nf_unregister(&csi2rx->notifier); in csi2rx_probe()
549 v4l2_async_nf_cleanup(&csi2rx->notifier); in csi2rx_probe()
551 kfree(csi2rx); in csi2rx_probe()
557 struct csi2rx_priv *csi2rx = platform_get_drvdata(pdev); in csi2rx_remove() local
559 v4l2_async_nf_unregister(&csi2rx->notifier); in csi2rx_remove()
560 v4l2_async_nf_cleanup(&csi2rx->notifier); in csi2rx_remove()
561 v4l2_async_unregister_subdev(&csi2rx->subdev); in csi2rx_remove()
562 kfree(csi2rx); in csi2rx_remove()
566 { .compatible = "starfive,jh7110-csi2rx" },
567 { .compatible = "cdns,csi2rx" },
577 .name = "cdns-csi2rx",