#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_graph.h>
#include <linux/of_platform.h>
#include <linux/pm_runtime.h>
#include <linux/reset.h>
#include <media/v4l2-fwnode.h>
#include <media/v4l2-mc.h>
#include "rkcif-capture-dvp.h"
#include "rkcif-capture-mipi.h"
#include "rkcif-common.h"
static const char *const px30_vip_clks[] = {
"aclk",
"hclk",
"pclk",
};
static const struct rkcif_match_data px30_vip_match_data = {
.clks = px30_vip_clks,
.clks_num = ARRAY_SIZE(px30_vip_clks),
.dvp = &rkcif_px30_vip_dvp_match_data,
};
static const char *const rk3568_vicap_clks[] = {
"aclk",
"hclk",
"dclk",
"iclk",
};
static const struct rkcif_match_data rk3568_vicap_match_data = {
.clks = rk3568_vicap_clks,
.clks_num = ARRAY_SIZE(rk3568_vicap_clks),
.dvp = &rkcif_rk3568_vicap_dvp_match_data,
.mipi = &rkcif_rk3568_vicap_mipi_match_data,
};
static const char *const rk3588_vicap_clks[] = {
"aclk",
"hclk",
"dclk",
"iclk",
"iclk1",
};
static const struct rkcif_match_data rk3588_vicap_match_data = {
.clks = rk3588_vicap_clks,
.clks_num = ARRAY_SIZE(rk3588_vicap_clks),
.mipi = &rkcif_rk3588_vicap_mipi_match_data,
};
static const struct of_device_id rkcif_plat_of_match[] = {
{
.compatible = "rockchip,px30-vip",
.data = &px30_vip_match_data,
},
{
.compatible = "rockchip,rk3568-vicap",
.data = &rk3568_vicap_match_data,
},
{
.compatible = "rockchip,rk3588-vicap",
.data = &rk3588_vicap_match_data,
},
{}
};
MODULE_DEVICE_TABLE(of, rkcif_plat_of_match);
static int rkcif_register(struct rkcif_device *rkcif)
{
int ret;
ret = rkcif_dvp_register(rkcif);
if (ret && ret != -ENODEV)
goto err;
ret = rkcif_mipi_register(rkcif);
if (ret && ret != -ENODEV)
goto err_dvp_unregister;
return 0;
err_dvp_unregister:
rkcif_dvp_unregister(rkcif);
err:
return ret;
}
static void rkcif_unregister(struct rkcif_device *rkcif)
{
rkcif_mipi_unregister(rkcif);
rkcif_dvp_unregister(rkcif);
}
static int rkcif_notifier_bound(struct v4l2_async_notifier *notifier,
struct v4l2_subdev *sd,
struct v4l2_async_connection *asd)
{
struct rkcif_device *rkcif =
container_of(notifier, struct rkcif_device, notifier);
struct rkcif_remote *remote =
container_of(asd, struct rkcif_remote, async_conn);
struct media_pad *sink_pad =
&remote->interface->pads[RKCIF_IF_PAD_SINK];
int ret;
ret = v4l2_create_fwnode_links_to_pad(sd, sink_pad,
MEDIA_LNK_FL_ENABLED);
if (ret) {
dev_err(rkcif->dev, "failed to link source pad of %s\n",
sd->name);
return ret;
}
remote->sd = sd;
return 0;
}
static int rkcif_notifier_complete(struct v4l2_async_notifier *notifier)
{
struct rkcif_device *rkcif =
container_of(notifier, struct rkcif_device, notifier);
return v4l2_device_register_subdev_nodes(&rkcif->v4l2_dev);
}
static const struct v4l2_async_notifier_operations rkcif_notifier_ops = {
.bound = rkcif_notifier_bound,
.complete = rkcif_notifier_complete,
};
static irqreturn_t rkcif_isr(int irq, void *ctx)
{
irqreturn_t ret = IRQ_NONE;
if (rkcif_dvp_isr(irq, ctx) == IRQ_HANDLED)
ret = IRQ_HANDLED;
if (rkcif_mipi_isr(irq, ctx) == IRQ_HANDLED)
ret = IRQ_HANDLED;
return ret;
}
static int rkcif_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct rkcif_device *rkcif;
int ret, irq;
rkcif = devm_kzalloc(dev, sizeof(*rkcif), GFP_KERNEL);
if (!rkcif)
return -ENOMEM;
rkcif->match_data = of_device_get_match_data(dev);
if (!rkcif->match_data)
return -ENODEV;
dev_set_drvdata(dev, rkcif);
rkcif->dev = dev;
rkcif->base_addr = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(rkcif->base_addr))
return PTR_ERR(rkcif->base_addr);
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
ret = devm_request_irq(dev, irq, rkcif_isr, IRQF_SHARED,
dev_driver_string(dev), dev);
if (ret)
return dev_err_probe(dev, ret, "failed to request irq\n");
if (rkcif->match_data->clks_num > RKCIF_CLK_MAX)
return dev_err_probe(dev, -EINVAL, "invalid number of clocks\n");
rkcif->clks_num = rkcif->match_data->clks_num;
for (unsigned int i = 0; i < rkcif->clks_num; i++)
rkcif->clks[i].id = rkcif->match_data->clks[i];
ret = devm_clk_bulk_get(dev, rkcif->clks_num, rkcif->clks);
if (ret)
return dev_err_probe(dev, ret, "failed to get clocks\n");
rkcif->reset = devm_reset_control_array_get_exclusive(dev);
if (IS_ERR(rkcif->reset))
return PTR_ERR(rkcif->reset);
rkcif->grf = syscon_regmap_lookup_by_phandle(dev->of_node,
"rockchip,grf");
if (IS_ERR(rkcif->grf))
rkcif->grf = NULL;
pm_runtime_enable(&pdev->dev);
rkcif->media_dev.dev = dev;
strscpy(rkcif->media_dev.model, RKCIF_DRIVER_NAME,
sizeof(rkcif->media_dev.model));
media_device_init(&rkcif->media_dev);
rkcif->v4l2_dev.mdev = &rkcif->media_dev;
ret = v4l2_device_register(dev, &rkcif->v4l2_dev);
if (ret)
goto err_media_dev_cleanup;
ret = media_device_register(&rkcif->media_dev);
if (ret < 0) {
dev_err(dev, "failed to register media device: %d\n", ret);
goto err_v4l2_dev_unregister;
}
v4l2_async_nf_init(&rkcif->notifier, &rkcif->v4l2_dev);
rkcif->notifier.ops = &rkcif_notifier_ops;
ret = rkcif_register(rkcif);
if (ret) {
dev_err(dev, "failed to register media entities: %d\n", ret);
goto err_notifier_cleanup;
}
ret = v4l2_async_nf_register(&rkcif->notifier);
if (ret)
goto err_rkcif_unregister;
return 0;
err_rkcif_unregister:
rkcif_unregister(rkcif);
err_notifier_cleanup:
v4l2_async_nf_cleanup(&rkcif->notifier);
media_device_unregister(&rkcif->media_dev);
err_v4l2_dev_unregister:
v4l2_device_unregister(&rkcif->v4l2_dev);
err_media_dev_cleanup:
media_device_cleanup(&rkcif->media_dev);
pm_runtime_disable(&pdev->dev);
return ret;
}
static void rkcif_remove(struct platform_device *pdev)
{
struct rkcif_device *rkcif = platform_get_drvdata(pdev);
v4l2_async_nf_unregister(&rkcif->notifier);
rkcif_unregister(rkcif);
v4l2_async_nf_cleanup(&rkcif->notifier);
media_device_unregister(&rkcif->media_dev);
v4l2_device_unregister(&rkcif->v4l2_dev);
media_device_cleanup(&rkcif->media_dev);
pm_runtime_disable(&pdev->dev);
}
static int rkcif_runtime_suspend(struct device *dev)
{
struct rkcif_device *rkcif = dev_get_drvdata(dev);
reset_control_assert(rkcif->reset);
udelay(5);
reset_control_deassert(rkcif->reset);
clk_bulk_disable_unprepare(rkcif->clks_num, rkcif->clks);
return 0;
}
static int rkcif_runtime_resume(struct device *dev)
{
struct rkcif_device *rkcif = dev_get_drvdata(dev);
int ret;
ret = clk_bulk_prepare_enable(rkcif->clks_num, rkcif->clks);
if (ret) {
dev_err(dev, "failed to enable clocks\n");
return ret;
}
return 0;
}
static const struct dev_pm_ops rkcif_plat_pm_ops = {
.runtime_suspend = rkcif_runtime_suspend,
.runtime_resume = rkcif_runtime_resume,
};
static struct platform_driver rkcif_plat_drv = {
.driver = {
.name = RKCIF_DRIVER_NAME,
.of_match_table = rkcif_plat_of_match,
.pm = &rkcif_plat_pm_ops,
},
.probe = rkcif_probe,
.remove = rkcif_remove,
};
module_platform_driver(rkcif_plat_drv);
MODULE_DESCRIPTION("Rockchip Camera Interface (CIF) platform driver");
MODULE_LICENSE("GPL");
