| Message ID | 20241212-csi_dcmipp_mp25-v4-13-fbeb55a05ed7@foss.st.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | media: stm32: introduction of CSI / DCMIPP for STM32MP25 | expand |
Hi Alain, On Thu, Dec 12, 2024 at 10:17:37AM +0100, Alain Volmat wrote: > The stm32mp25 supports both parallel & csi inputs. > An additional clock control is necessary. > Skeleton of the subdev structures for the stm32mp25 is added, > identical for the time being to the stm32mp13 however more subdeves > will be added in further commits. > > Signed-off-by: Alain Volmat <alain.volmat@foss.st.com> > --- > v4: > - correct clock handling within dcmipp_runtime_resume > --- > .../platform/st/stm32/stm32-dcmipp/dcmipp-core.c | 104 +++++++++++++++++---- > 1 file changed, 85 insertions(+), 19 deletions(-) > > diff --git a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c > index 62dd17e0488d..71acf539e1f3 100644 > --- a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c > +++ b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c > @@ -40,6 +40,7 @@ struct dcmipp_device { > > /* Hardware resources */ > void __iomem *regs; > + struct clk *mclk; > struct clk *kclk; > > /* The pipeline configuration */ > @@ -132,6 +133,40 @@ static const struct dcmipp_pipeline_config stm32mp13_pipe_cfg = { > .hw_revision = DCMIPP_STM32MP13_VERR > }; > > +static const struct dcmipp_ent_config stm32mp25_ent_config[] = { > + { > + .name = "dcmipp_input", > + .init = dcmipp_inp_ent_init, > + .release = dcmipp_inp_ent_release, > + }, > + { > + .name = "dcmipp_dump_postproc", > + .init = dcmipp_byteproc_ent_init, > + .release = dcmipp_byteproc_ent_release, > + }, > + { > + .name = "dcmipp_dump_capture", > + .init = dcmipp_bytecap_ent_init, > + .release = dcmipp_bytecap_ent_release, > + }, > +}; > + > +static const struct dcmipp_ent_link stm32mp25_ent_links[] = { > + DCMIPP_ENT_LINK(ID_INPUT, 1, ID_DUMP_BYTEPROC, 0, > + MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE), > + DCMIPP_ENT_LINK(ID_DUMP_BYTEPROC, 1, ID_DUMP_CAPTURE, 0, > + MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE), > +}; > + > +#define DCMIPP_STM32MP25_VERR 0x30 > +static const struct dcmipp_pipeline_config stm32mp25_pipe_cfg = { > + .ents = stm32mp25_ent_config, > + .num_ents = ARRAY_SIZE(stm32mp25_ent_config), > + .links = stm32mp25_ent_links, > + .num_links = ARRAY_SIZE(stm32mp25_ent_links), > + .hw_revision = DCMIPP_STM32MP25_VERR > +}; > + > #define LINK_FLAG_TO_STR(f) ((f) == 0 ? "" :\ > (f) == MEDIA_LNK_FL_ENABLED ? "ENABLED" :\ > (f) == MEDIA_LNK_FL_IMMUTABLE ? "IMMUTABLE" :\ > @@ -212,6 +247,7 @@ static int dcmipp_create_subdevs(struct dcmipp_device *dcmipp) > > static const struct of_device_id dcmipp_of_match[] = { > { .compatible = "st,stm32mp13-dcmipp", .data = &stm32mp13_pipe_cfg }, > + { .compatible = "st,stm32mp25-dcmipp", .data = &stm32mp25_pipe_cfg }, > { /* end node */ }, > }; > MODULE_DEVICE_TABLE(of, dcmipp_of_match); > @@ -261,13 +297,22 @@ static int dcmipp_graph_notify_bound(struct v4l2_async_notifier *notifier, > { > struct dcmipp_device *dcmipp = notifier_to_dcmipp(notifier); > unsigned int ret; > - int src_pad; > + int src_pad, i; unsigned int? > struct dcmipp_ent_device *sink; > - struct v4l2_fwnode_endpoint vep = { .bus_type = V4L2_MBUS_PARALLEL }; > + struct v4l2_fwnode_endpoint vep = { 0 }; > struct fwnode_handle *ep; > + enum v4l2_mbus_type supported_types[] = { > + V4L2_MBUS_PARALLEL, V4L2_MBUS_BT656, V4L2_MBUS_CSI2_DPHY > + }; > + int supported_types_nb = ARRAY_SIZE(supported_types); > > dev_dbg(dcmipp->dev, "Subdev \"%s\" bound\n", subdev->name); > > + /* Only MP25 supports CSI input */ > + if (!of_device_is_compatible(dcmipp->dev->of_node, > + "st,stm32mp25-dcmipp")) This would be much cleaner with match data. You seem to already be using it for other purposes. > + supported_types_nb--; > + > /* > * Link this sub-device to DCMIPP, it could be > * a parallel camera sensor or a CSI-2 to parallel bridge > @@ -284,21 +329,23 @@ static int dcmipp_graph_notify_bound(struct v4l2_async_notifier *notifier, > return -ENODEV; > } > > - /* Check for parallel bus-type first, then bt656 */ > - ret = v4l2_fwnode_endpoint_parse(ep, &vep); > - if (ret) { > - vep.bus_type = V4L2_MBUS_BT656; > + /* Check for supported MBUS type */ > + for (i = 0; i < supported_types_nb; i++) { > + vep.bus_type = supported_types[i]; > ret = v4l2_fwnode_endpoint_parse(ep, &vep); > - if (ret) { > - dev_err(dcmipp->dev, "Could not parse the endpoint\n"); > - fwnode_handle_put(ep); > - return ret; > - } > + if (!ret) > + break; > } > > fwnode_handle_put(ep); > > - if (vep.bus.parallel.bus_width == 0) { > + if (ret) { > + dev_err(dcmipp->dev, "Could not parse the endpoint\n"); > + return ret; > + } > + > + if (vep.bus_type != V4L2_MBUS_CSI2_DPHY && > + vep.bus.parallel.bus_width == 0) { > dev_err(dcmipp->dev, "Invalid parallel interface bus-width\n"); > return -ENODEV; > } > @@ -311,11 +358,13 @@ static int dcmipp_graph_notify_bound(struct v4l2_async_notifier *notifier, > return -ENODEV; > } > > - /* Parallel input device detected, connect it to parallel subdev */ > + /* Connect input device to the dcmipp_input subdev */ > sink = dcmipp->entity[ID_INPUT]; > - sink->bus.flags = vep.bus.parallel.flags; > - sink->bus.bus_width = vep.bus.parallel.bus_width; > - sink->bus.data_shift = vep.bus.parallel.data_shift; > + if (vep.bus_type != V4L2_MBUS_CSI2_DPHY) { > + sink->bus.flags = vep.bus.parallel.flags; > + sink->bus.bus_width = vep.bus.parallel.bus_width; > + sink->bus.data_shift = vep.bus.parallel.data_shift; > + } > sink->bus_type = vep.bus_type; > ret = media_create_pad_link(&subdev->entity, src_pad, sink->ent, 0, > MEDIA_LNK_FL_IMMUTABLE | > @@ -414,7 +463,7 @@ static int dcmipp_graph_init(struct dcmipp_device *dcmipp) > static int dcmipp_probe(struct platform_device *pdev) > { > struct dcmipp_device *dcmipp; > - struct clk *kclk; > + struct clk *kclk, *mclk; > const struct dcmipp_pipeline_config *pipe_cfg; > struct reset_control *rstc; > int irq; > @@ -474,12 +523,20 @@ static int dcmipp_probe(struct platform_device *pdev) > return ret; > } > > - kclk = devm_clk_get(&pdev->dev, NULL); > + kclk = devm_clk_get(&pdev->dev, "kclk"); > if (IS_ERR(kclk)) > return dev_err_probe(&pdev->dev, PTR_ERR(kclk), > "Unable to get kclk\n"); > dcmipp->kclk = kclk; > > + if (!of_device_is_compatible(pdev->dev.of_node, "st,stm32mp13-dcmipp")) { Same here. > + mclk = devm_clk_get(&pdev->dev, "mclk"); > + if (IS_ERR(mclk)) > + return dev_err_probe(&pdev->dev, PTR_ERR(mclk), > + "Unable to get mclk\n"); > + dcmipp->mclk = mclk; > + } > + > dcmipp->entity = devm_kcalloc(&pdev->dev, dcmipp->pipe_cfg->num_ents, > sizeof(*dcmipp->entity), GFP_KERNEL); > if (!dcmipp->entity) > @@ -542,6 +599,7 @@ static int dcmipp_runtime_suspend(struct device *dev) > struct dcmipp_device *dcmipp = dev_get_drvdata(dev); > > clk_disable_unprepare(dcmipp->kclk); > + clk_disable_unprepare(dcmipp->mclk); > > return 0; > } > @@ -551,9 +609,17 @@ static int dcmipp_runtime_resume(struct device *dev) > struct dcmipp_device *dcmipp = dev_get_drvdata(dev); > int ret; > > + ret = clk_prepare_enable(dcmipp->mclk); > + if (ret) { > + dev_err(dev, "%s: Failed to prepare_enable mclk\n", __func__); > + return ret; > + } > + > ret = clk_prepare_enable(dcmipp->kclk); > - if (ret) > + if (ret) { > + clk_disable_unprepare(dcmipp->mclk); > dev_err(dev, "%s: Failed to prepare_enable kclk\n", __func__); > + } > > return ret; > } > >
Hi Sakari, On Sun, Dec 15, 2024 at 12:55:39PM +0000, Sakari Ailus wrote: > Hi Alain, > > On Thu, Dec 12, 2024 at 10:17:37AM +0100, Alain Volmat wrote: > > The stm32mp25 supports both parallel & csi inputs. > > An additional clock control is necessary. > > Skeleton of the subdev structures for the stm32mp25 is added, > > identical for the time being to the stm32mp13 however more subdeves > > will be added in further commits. > > > > Signed-off-by: Alain Volmat <alain.volmat@foss.st.com> > > --- > > v4: > > - correct clock handling within dcmipp_runtime_resume > > --- > > .../platform/st/stm32/stm32-dcmipp/dcmipp-core.c | 104 +++++++++++++++++---- > > 1 file changed, 85 insertions(+), 19 deletions(-) > > > > diff --git a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c > > index 62dd17e0488d..71acf539e1f3 100644 > > --- a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c > > +++ b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c > > @@ -40,6 +40,7 @@ struct dcmipp_device { > > > > /* Hardware resources */ > > void __iomem *regs; > > + struct clk *mclk; > > struct clk *kclk; > > > > /* The pipeline configuration */ > > @@ -132,6 +133,40 @@ static const struct dcmipp_pipeline_config stm32mp13_pipe_cfg = { > > .hw_revision = DCMIPP_STM32MP13_VERR > > }; > > > > +static const struct dcmipp_ent_config stm32mp25_ent_config[] = { > > + { > > + .name = "dcmipp_input", > > + .init = dcmipp_inp_ent_init, > > + .release = dcmipp_inp_ent_release, > > + }, > > + { > > + .name = "dcmipp_dump_postproc", > > + .init = dcmipp_byteproc_ent_init, > > + .release = dcmipp_byteproc_ent_release, > > + }, > > + { > > + .name = "dcmipp_dump_capture", > > + .init = dcmipp_bytecap_ent_init, > > + .release = dcmipp_bytecap_ent_release, > > + }, > > +}; > > + > > +static const struct dcmipp_ent_link stm32mp25_ent_links[] = { > > + DCMIPP_ENT_LINK(ID_INPUT, 1, ID_DUMP_BYTEPROC, 0, > > + MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE), > > + DCMIPP_ENT_LINK(ID_DUMP_BYTEPROC, 1, ID_DUMP_CAPTURE, 0, > > + MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE), > > +}; > > + > > +#define DCMIPP_STM32MP25_VERR 0x30 > > +static const struct dcmipp_pipeline_config stm32mp25_pipe_cfg = { > > + .ents = stm32mp25_ent_config, > > + .num_ents = ARRAY_SIZE(stm32mp25_ent_config), > > + .links = stm32mp25_ent_links, > > + .num_links = ARRAY_SIZE(stm32mp25_ent_links), > > + .hw_revision = DCMIPP_STM32MP25_VERR > > +}; > > + > > #define LINK_FLAG_TO_STR(f) ((f) == 0 ? "" :\ > > (f) == MEDIA_LNK_FL_ENABLED ? "ENABLED" :\ > > (f) == MEDIA_LNK_FL_IMMUTABLE ? "IMMUTABLE" :\ > > @@ -212,6 +247,7 @@ static int dcmipp_create_subdevs(struct dcmipp_device *dcmipp) > > > > static const struct of_device_id dcmipp_of_match[] = { > > { .compatible = "st,stm32mp13-dcmipp", .data = &stm32mp13_pipe_cfg }, > > + { .compatible = "st,stm32mp25-dcmipp", .data = &stm32mp25_pipe_cfg }, > > { /* end node */ }, > > }; > > MODULE_DEVICE_TABLE(of, dcmipp_of_match); > > @@ -261,13 +297,22 @@ static int dcmipp_graph_notify_bound(struct v4l2_async_notifier *notifier, > > { > > struct dcmipp_device *dcmipp = notifier_to_dcmipp(notifier); > > unsigned int ret; > > - int src_pad; > > + int src_pad, i; > > unsigned int? Done > > > struct dcmipp_ent_device *sink; > > - struct v4l2_fwnode_endpoint vep = { .bus_type = V4L2_MBUS_PARALLEL }; > > + struct v4l2_fwnode_endpoint vep = { 0 }; > > struct fwnode_handle *ep; > > + enum v4l2_mbus_type supported_types[] = { > > + V4L2_MBUS_PARALLEL, V4L2_MBUS_BT656, V4L2_MBUS_CSI2_DPHY > > + }; > > + int supported_types_nb = ARRAY_SIZE(supported_types); > > > > dev_dbg(dcmipp->dev, "Subdev \"%s\" bound\n", subdev->name); > > > > + /* Only MP25 supports CSI input */ > > + if (!of_device_is_compatible(dcmipp->dev->of_node, > > + "st,stm32mp25-dcmipp")) > > This would be much cleaner with match data. You seem to already be using it > for other purposes. Added a new boolean within the match structure to indicate if csi is supported or not. > > > + supported_types_nb--; > > + > > /* > > * Link this sub-device to DCMIPP, it could be > > * a parallel camera sensor or a CSI-2 to parallel bridge > > @@ -284,21 +329,23 @@ static int dcmipp_graph_notify_bound(struct v4l2_async_notifier *notifier, > > return -ENODEV; > > } > > > > - /* Check for parallel bus-type first, then bt656 */ > > - ret = v4l2_fwnode_endpoint_parse(ep, &vep); > > - if (ret) { > > - vep.bus_type = V4L2_MBUS_BT656; > > + /* Check for supported MBUS type */ > > + for (i = 0; i < supported_types_nb; i++) { > > + vep.bus_type = supported_types[i]; > > ret = v4l2_fwnode_endpoint_parse(ep, &vep); > > - if (ret) { > > - dev_err(dcmipp->dev, "Could not parse the endpoint\n"); > > - fwnode_handle_put(ep); > > - return ret; > > - } > > + if (!ret) > > + break; > > } > > > > fwnode_handle_put(ep); > > > > - if (vep.bus.parallel.bus_width == 0) { > > + if (ret) { > > + dev_err(dcmipp->dev, "Could not parse the endpoint\n"); > > + return ret; > > + } > > + > > + if (vep.bus_type != V4L2_MBUS_CSI2_DPHY && > > + vep.bus.parallel.bus_width == 0) { > > dev_err(dcmipp->dev, "Invalid parallel interface bus-width\n"); > > return -ENODEV; > > } > > @@ -311,11 +358,13 @@ static int dcmipp_graph_notify_bound(struct v4l2_async_notifier *notifier, > > return -ENODEV; > > } > > > > - /* Parallel input device detected, connect it to parallel subdev */ > > + /* Connect input device to the dcmipp_input subdev */ > > sink = dcmipp->entity[ID_INPUT]; > > - sink->bus.flags = vep.bus.parallel.flags; > > - sink->bus.bus_width = vep.bus.parallel.bus_width; > > - sink->bus.data_shift = vep.bus.parallel.data_shift; > > + if (vep.bus_type != V4L2_MBUS_CSI2_DPHY) { > > + sink->bus.flags = vep.bus.parallel.flags; > > + sink->bus.bus_width = vep.bus.parallel.bus_width; > > + sink->bus.data_shift = vep.bus.parallel.data_shift; > > + } > > sink->bus_type = vep.bus_type; > > ret = media_create_pad_link(&subdev->entity, src_pad, sink->ent, 0, > > MEDIA_LNK_FL_IMMUTABLE | > > @@ -414,7 +463,7 @@ static int dcmipp_graph_init(struct dcmipp_device *dcmipp) > > static int dcmipp_probe(struct platform_device *pdev) > > { > > struct dcmipp_device *dcmipp; > > - struct clk *kclk; > > + struct clk *kclk, *mclk; > > const struct dcmipp_pipeline_config *pipe_cfg; > > struct reset_control *rstc; > > int irq; > > @@ -474,12 +523,20 @@ static int dcmipp_probe(struct platform_device *pdev) > > return ret; > > } > > > > - kclk = devm_clk_get(&pdev->dev, NULL); > > + kclk = devm_clk_get(&pdev->dev, "kclk"); > > if (IS_ERR(kclk)) > > return dev_err_probe(&pdev->dev, PTR_ERR(kclk), > > "Unable to get kclk\n"); > > dcmipp->kclk = kclk; > > > > + if (!of_device_is_compatible(pdev->dev.of_node, "st,stm32mp13-dcmipp")) { > > Same here. Done as well via match structure. > > > + mclk = devm_clk_get(&pdev->dev, "mclk"); > > + if (IS_ERR(mclk)) > > + return dev_err_probe(&pdev->dev, PTR_ERR(mclk), > > + "Unable to get mclk\n"); > > + dcmipp->mclk = mclk; > > + } > > + > > dcmipp->entity = devm_kcalloc(&pdev->dev, dcmipp->pipe_cfg->num_ents, > > sizeof(*dcmipp->entity), GFP_KERNEL); > > if (!dcmipp->entity) > > @@ -542,6 +599,7 @@ static int dcmipp_runtime_suspend(struct device *dev) > > struct dcmipp_device *dcmipp = dev_get_drvdata(dev); > > > > clk_disable_unprepare(dcmipp->kclk); > > + clk_disable_unprepare(dcmipp->mclk); > > > > return 0; > > } > > @@ -551,9 +609,17 @@ static int dcmipp_runtime_resume(struct device *dev) > > struct dcmipp_device *dcmipp = dev_get_drvdata(dev); > > int ret; > > > > + ret = clk_prepare_enable(dcmipp->mclk); > > + if (ret) { > > + dev_err(dev, "%s: Failed to prepare_enable mclk\n", __func__); > > + return ret; > > + } > > + > > ret = clk_prepare_enable(dcmipp->kclk); > > - if (ret) > > + if (ret) { > > + clk_disable_unprepare(dcmipp->mclk); > > dev_err(dev, "%s: Failed to prepare_enable kclk\n", __func__); > > + } > > > > return ret; > > } > > > > > > -- > Kind regards, > > Sakari Ailus
diff --git a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c index 62dd17e0488d..71acf539e1f3 100644 --- a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c +++ b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c @@ -40,6 +40,7 @@ struct dcmipp_device { /* Hardware resources */ void __iomem *regs; + struct clk *mclk; struct clk *kclk; /* The pipeline configuration */ @@ -132,6 +133,40 @@ static const struct dcmipp_pipeline_config stm32mp13_pipe_cfg = { .hw_revision = DCMIPP_STM32MP13_VERR }; +static const struct dcmipp_ent_config stm32mp25_ent_config[] = { + { + .name = "dcmipp_input", + .init = dcmipp_inp_ent_init, + .release = dcmipp_inp_ent_release, + }, + { + .name = "dcmipp_dump_postproc", + .init = dcmipp_byteproc_ent_init, + .release = dcmipp_byteproc_ent_release, + }, + { + .name = "dcmipp_dump_capture", + .init = dcmipp_bytecap_ent_init, + .release = dcmipp_bytecap_ent_release, + }, +}; + +static const struct dcmipp_ent_link stm32mp25_ent_links[] = { + DCMIPP_ENT_LINK(ID_INPUT, 1, ID_DUMP_BYTEPROC, 0, + MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE), + DCMIPP_ENT_LINK(ID_DUMP_BYTEPROC, 1, ID_DUMP_CAPTURE, 0, + MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE), +}; + +#define DCMIPP_STM32MP25_VERR 0x30 +static const struct dcmipp_pipeline_config stm32mp25_pipe_cfg = { + .ents = stm32mp25_ent_config, + .num_ents = ARRAY_SIZE(stm32mp25_ent_config), + .links = stm32mp25_ent_links, + .num_links = ARRAY_SIZE(stm32mp25_ent_links), + .hw_revision = DCMIPP_STM32MP25_VERR +}; + #define LINK_FLAG_TO_STR(f) ((f) == 0 ? "" :\ (f) == MEDIA_LNK_FL_ENABLED ? "ENABLED" :\ (f) == MEDIA_LNK_FL_IMMUTABLE ? "IMMUTABLE" :\ @@ -212,6 +247,7 @@ static int dcmipp_create_subdevs(struct dcmipp_device *dcmipp) static const struct of_device_id dcmipp_of_match[] = { { .compatible = "st,stm32mp13-dcmipp", .data = &stm32mp13_pipe_cfg }, + { .compatible = "st,stm32mp25-dcmipp", .data = &stm32mp25_pipe_cfg }, { /* end node */ }, }; MODULE_DEVICE_TABLE(of, dcmipp_of_match); @@ -261,13 +297,22 @@ static int dcmipp_graph_notify_bound(struct v4l2_async_notifier *notifier, { struct dcmipp_device *dcmipp = notifier_to_dcmipp(notifier); unsigned int ret; - int src_pad; + int src_pad, i; struct dcmipp_ent_device *sink; - struct v4l2_fwnode_endpoint vep = { .bus_type = V4L2_MBUS_PARALLEL }; + struct v4l2_fwnode_endpoint vep = { 0 }; struct fwnode_handle *ep; + enum v4l2_mbus_type supported_types[] = { + V4L2_MBUS_PARALLEL, V4L2_MBUS_BT656, V4L2_MBUS_CSI2_DPHY + }; + int supported_types_nb = ARRAY_SIZE(supported_types); dev_dbg(dcmipp->dev, "Subdev \"%s\" bound\n", subdev->name); + /* Only MP25 supports CSI input */ + if (!of_device_is_compatible(dcmipp->dev->of_node, + "st,stm32mp25-dcmipp")) + supported_types_nb--; + /* * Link this sub-device to DCMIPP, it could be * a parallel camera sensor or a CSI-2 to parallel bridge @@ -284,21 +329,23 @@ static int dcmipp_graph_notify_bound(struct v4l2_async_notifier *notifier, return -ENODEV; } - /* Check for parallel bus-type first, then bt656 */ - ret = v4l2_fwnode_endpoint_parse(ep, &vep); - if (ret) { - vep.bus_type = V4L2_MBUS_BT656; + /* Check for supported MBUS type */ + for (i = 0; i < supported_types_nb; i++) { + vep.bus_type = supported_types[i]; ret = v4l2_fwnode_endpoint_parse(ep, &vep); - if (ret) { - dev_err(dcmipp->dev, "Could not parse the endpoint\n"); - fwnode_handle_put(ep); - return ret; - } + if (!ret) + break; } fwnode_handle_put(ep); - if (vep.bus.parallel.bus_width == 0) { + if (ret) { + dev_err(dcmipp->dev, "Could not parse the endpoint\n"); + return ret; + } + + if (vep.bus_type != V4L2_MBUS_CSI2_DPHY && + vep.bus.parallel.bus_width == 0) { dev_err(dcmipp->dev, "Invalid parallel interface bus-width\n"); return -ENODEV; } @@ -311,11 +358,13 @@ static int dcmipp_graph_notify_bound(struct v4l2_async_notifier *notifier, return -ENODEV; } - /* Parallel input device detected, connect it to parallel subdev */ + /* Connect input device to the dcmipp_input subdev */ sink = dcmipp->entity[ID_INPUT]; - sink->bus.flags = vep.bus.parallel.flags; - sink->bus.bus_width = vep.bus.parallel.bus_width; - sink->bus.data_shift = vep.bus.parallel.data_shift; + if (vep.bus_type != V4L2_MBUS_CSI2_DPHY) { + sink->bus.flags = vep.bus.parallel.flags; + sink->bus.bus_width = vep.bus.parallel.bus_width; + sink->bus.data_shift = vep.bus.parallel.data_shift; + } sink->bus_type = vep.bus_type; ret = media_create_pad_link(&subdev->entity, src_pad, sink->ent, 0, MEDIA_LNK_FL_IMMUTABLE | @@ -414,7 +463,7 @@ static int dcmipp_graph_init(struct dcmipp_device *dcmipp) static int dcmipp_probe(struct platform_device *pdev) { struct dcmipp_device *dcmipp; - struct clk *kclk; + struct clk *kclk, *mclk; const struct dcmipp_pipeline_config *pipe_cfg; struct reset_control *rstc; int irq; @@ -474,12 +523,20 @@ static int dcmipp_probe(struct platform_device *pdev) return ret; } - kclk = devm_clk_get(&pdev->dev, NULL); + kclk = devm_clk_get(&pdev->dev, "kclk"); if (IS_ERR(kclk)) return dev_err_probe(&pdev->dev, PTR_ERR(kclk), "Unable to get kclk\n"); dcmipp->kclk = kclk; + if (!of_device_is_compatible(pdev->dev.of_node, "st,stm32mp13-dcmipp")) { + mclk = devm_clk_get(&pdev->dev, "mclk"); + if (IS_ERR(mclk)) + return dev_err_probe(&pdev->dev, PTR_ERR(mclk), + "Unable to get mclk\n"); + dcmipp->mclk = mclk; + } + dcmipp->entity = devm_kcalloc(&pdev->dev, dcmipp->pipe_cfg->num_ents, sizeof(*dcmipp->entity), GFP_KERNEL); if (!dcmipp->entity) @@ -542,6 +599,7 @@ static int dcmipp_runtime_suspend(struct device *dev) struct dcmipp_device *dcmipp = dev_get_drvdata(dev); clk_disable_unprepare(dcmipp->kclk); + clk_disable_unprepare(dcmipp->mclk); return 0; } @@ -551,9 +609,17 @@ static int dcmipp_runtime_resume(struct device *dev) struct dcmipp_device *dcmipp = dev_get_drvdata(dev); int ret; + ret = clk_prepare_enable(dcmipp->mclk); + if (ret) { + dev_err(dev, "%s: Failed to prepare_enable mclk\n", __func__); + return ret; + } + ret = clk_prepare_enable(dcmipp->kclk); - if (ret) + if (ret) { + clk_disable_unprepare(dcmipp->mclk); dev_err(dev, "%s: Failed to prepare_enable kclk\n", __func__); + } return ret; }
The stm32mp25 supports both parallel & csi inputs. An additional clock control is necessary. Skeleton of the subdev structures for the stm32mp25 is added, identical for the time being to the stm32mp13 however more subdeves will be added in further commits. Signed-off-by: Alain Volmat <alain.volmat@foss.st.com> --- v4: - correct clock handling within dcmipp_runtime_resume --- .../platform/st/stm32/stm32-dcmipp/dcmipp-core.c | 104 +++++++++++++++++---- 1 file changed, 85 insertions(+), 19 deletions(-)