#include <linux/pm_runtime.h>
#include <linux/sched.h>
+#include <media/v4l2-async.h>
#include <media/v4l2-common.h>
#include <media/v4l2-dev.h>
#include <media/soc_camera.h>
struct sh_mobile_ceu_dev {
struct soc_camera_host ici;
+ /* Asynchronous CSI2 linking */
+ struct v4l2_async_subdev *csi2_asd;
+ struct v4l2_subdev *csi2_sd;
+ /* Synchronous probing compatibility */
struct platform_device *csi2_pdev;
unsigned int irq;
udelay(1);
}
-
if (2 != success) {
dev_warn(pcdev->ici.v4l2_dev.dev, "soft reset time out\n");
return -EIO;
{
struct v4l2_subdev *sd;
- if (!pcdev->csi2_pdev)
- return NULL;
+ if (pcdev->csi2_sd)
+ return pcdev->csi2_sd;
- v4l2_device_for_each_subdev(sd, &pcdev->ici.v4l2_dev)
- if (&pcdev->csi2_pdev->dev == v4l2_get_subdevdata(sd))
- return sd;
+ if (pcdev->csi2_asd) {
+ char name[] = "sh-mobile-csi2";
+ v4l2_device_for_each_subdev(sd, &pcdev->ici.v4l2_dev)
+ if (!strncmp(name, sd->name, sizeof(name) - 1)) {
+ pcdev->csi2_sd = sd;
+ return sd;
+ }
+ }
return NULL;
}
+static struct v4l2_subdev *csi2_subdev(struct sh_mobile_ceu_dev *pcdev,
+ struct soc_camera_device *icd)
+{
+ struct v4l2_subdev *sd = pcdev->csi2_sd;
+
+ return sd && sd->grp_id == soc_camera_grp_id(icd) ? sd : NULL;
+}
+
static int sh_mobile_ceu_add_device(struct soc_camera_device *icd)
{
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
* -ENODEV is special: either csi2_sd == NULL or the CSI-2 driver
* has not found this soc-camera device among its clients
*/
- if (ret == -ENODEV && csi2_sd)
+ if (csi2_sd && ret == -ENODEV)
csi2_sd->grp_id = 0;
dev_info(icd->parent,
- "SuperH Mobile CEU driver attached to camera %d\n",
- icd->devnum);
+ "SuperH Mobile CEU%s driver attached to camera %d\n",
+ csi2_sd && csi2_sd->grp_id ? "/CSI-2" : "", icd->devnum);
return 0;
}
icd->devnum);
v4l2_subdev_call(csi2_sd, core, s_power, 0);
- if (csi2_sd)
- csi2_sd->grp_id = 0;
}
/* Called with .host_lock held */
}
/* CSI2 special configuration */
- if (pcdev->csi2_pdev) {
+ if (csi2_subdev(pcdev, icd)) {
in_width = ((in_width - 2) * 2);
left_offset *= 2;
}
static struct v4l2_subdev *find_bus_subdev(struct sh_mobile_ceu_dev *pcdev,
struct soc_camera_device *icd)
{
- if (pcdev->csi2_pdev) {
- struct v4l2_subdev *csi2_sd = find_csi2(pcdev);
- if (csi2_sd && csi2_sd->grp_id == soc_camera_grp_id(icd))
- return csi2_sd;
- }
-
- return soc_camera_to_subdev(icd);
+ return csi2_subdev(pcdev, icd) ? : soc_camera_to_subdev(icd);
}
#define CEU_BUS_FLAGS (V4L2_MBUS_MASTER | \
value |= common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW ? 1 << 1 : 0;
value |= common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW ? 1 << 0 : 0;
- if (pcdev->csi2_pdev) /* CSI2 mode */
+ if (csi2_subdev(pcdev, icd)) /* CSI2 mode */
value |= 3 << 12;
else if (pcdev->is_16bit)
value |= 1 << 12;
return 0;
}
- if (!pcdev->pdata || !pcdev->pdata->csi2) {
+ if (!csi2_subdev(pcdev, icd)) {
/* Are there any restrictions in the CSI-2 case? */
ret = sh_mobile_ceu_try_bus_param(icd, fmt->bits_per_sample);
if (ret < 0)
struct resource *res;
void __iomem *base;
unsigned int irq;
- int err = 0;
+ int err, i;
struct bus_wait wait = {
.completion = COMPLETION_INITIALIZER_ONSTACK(wait.completion),
.notifier.notifier_call = bus_notify,
goto exit_free_clk;
}
- err = soc_camera_host_register(&pcdev->ici);
- if (err)
- goto exit_free_ctx;
+ if (pcdev->pdata && pcdev->pdata->asd_sizes) {
+ struct v4l2_async_subdev **asd;
+ char name[] = "sh-mobile-csi2";
+ int j;
+
+ /*
+ * CSI2 interfacing: several groups can use CSI2, pick up the
+ * first one
+ */
+ asd = pcdev->pdata->asd;
+ for (j = 0; pcdev->pdata->asd_sizes[j]; j++) {
+ for (i = 0; i < pcdev->pdata->asd_sizes[j]; i++, asd++) {
+ dev_dbg(&pdev->dev, "%s(): subdev #%d, type %u\n",
+ __func__, i, (*asd)->bus_type);
+ if ((*asd)->bus_type == V4L2_ASYNC_BUS_PLATFORM &&
+ !strncmp(name, (*asd)->match.platform.name,
+ sizeof(name) - 1)) {
+ pcdev->csi2_asd = *asd;
+ break;
+ }
+ }
+ if (pcdev->csi2_asd)
+ break;
+ }
+
+ pcdev->ici.asd = pcdev->pdata->asd;
+ pcdev->ici.asd_sizes = pcdev->pdata->asd_sizes;
+ }
- /* CSI2 interfacing */
+ /* Legacy CSI2 interfacing */
csi2 = pcdev->pdata ? pcdev->pdata->csi2 : NULL;
if (csi2) {
+ /*
+ * TODO: remove this once all users are converted to
+ * asynchronous CSI2 probing. If it has to be kept, csi2
+ * platform device resources have to be added, using
+ * platform_device_add_resources()
+ */
struct platform_device *csi2_pdev =
platform_device_alloc("sh-mobile-csi2", csi2->id);
struct sh_csi2_pdata *csi2_pdata = csi2->platform_data;
if (!csi2_pdev) {
err = -ENOMEM;
- goto exit_host_unregister;
+ goto exit_free_ctx;
}
pcdev->csi2_pdev = csi2_pdev;
- err = platform_device_add_data(csi2_pdev, csi2_pdata, sizeof(*csi2_pdata));
+ err = platform_device_add_data(csi2_pdev, csi2_pdata,
+ sizeof(*csi2_pdata));
if (err < 0)
goto exit_pdev_put;
- csi2_pdata = csi2_pdev->dev.platform_data;
- csi2_pdata->v4l2_dev = &pcdev->ici.v4l2_dev;
-
csi2_pdev->resource = csi2->resource;
csi2_pdev->num_resources = csi2->num_resources;
err = -ENODEV;
goto exit_pdev_unregister;
}
+
+ pcdev->csi2_sd = platform_get_drvdata(csi2_pdev);
+ }
+
+ err = soc_camera_host_register(&pcdev->ici);
+ if (err)
+ goto exit_csi2_unregister;
+
+ if (csi2) {
+ err = v4l2_device_register_subdev(&pcdev->ici.v4l2_dev,
+ pcdev->csi2_sd);
+ dev_dbg(&pdev->dev, "%s(): ret(register_subdev) = %d\n",
+ __func__, err);
+ if (err < 0)
+ goto exit_host_unregister;
+ /* v4l2_device_register_subdev() took a reference too */
+ module_put(pcdev->csi2_sd->owner);
}
return 0;
-exit_pdev_unregister:
- platform_device_del(pcdev->csi2_pdev);
-exit_pdev_put:
- pcdev->csi2_pdev->resource = NULL;
- platform_device_put(pcdev->csi2_pdev);
exit_host_unregister:
soc_camera_host_unregister(&pcdev->ici);
+exit_csi2_unregister:
+ if (csi2) {
+ module_put(pcdev->csi2_pdev->dev.driver->owner);
+exit_pdev_unregister:
+ platform_device_del(pcdev->csi2_pdev);
+exit_pdev_put:
+ pcdev->csi2_pdev->resource = NULL;
+ platform_device_put(pcdev->csi2_pdev);
+ }
exit_free_ctx:
vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx);
exit_free_clk:
static struct platform_driver sh_mobile_ceu_driver = {
.driver = {
.name = "sh_mobile_ceu",
+ .owner = THIS_MODULE,
.pm = &sh_mobile_ceu_dev_pm_ops,
.of_match_table = sh_mobile_ceu_of_match,
},
MODULE_DESCRIPTION("SuperH Mobile CEU driver");
MODULE_AUTHOR("Magnus Damm");
MODULE_LICENSE("GPL");
-MODULE_VERSION("0.0.6");
+MODULE_VERSION("0.1.0");
MODULE_ALIAS("platform:sh_mobile_ceu");
struct sh_csi2 {
struct v4l2_subdev subdev;
- struct list_head list;
unsigned int irq;
unsigned long mipi_flags;
void __iomem *base;
struct sh_csi2_client_config *client;
};
+static void sh_csi2_hwinit(struct sh_csi2 *priv);
+
static int sh_csi2_try_fmt(struct v4l2_subdev *sd,
struct v4l2_mbus_framefmt *mf)
{
static int sh_csi2_g_mbus_config(struct v4l2_subdev *sd,
struct v4l2_mbus_config *cfg)
{
- cfg->flags = V4L2_MBUS_PCLK_SAMPLE_RISING |
- V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_HIGH |
- V4L2_MBUS_MASTER | V4L2_MBUS_DATA_ACTIVE_HIGH;
- cfg->type = V4L2_MBUS_PARALLEL;
+ struct sh_csi2 *priv = container_of(sd, struct sh_csi2, subdev);
+
+ if (!priv->mipi_flags) {
+ struct soc_camera_device *icd = v4l2_get_subdev_hostdata(sd);
+ struct v4l2_subdev *client_sd = soc_camera_to_subdev(icd);
+ struct sh_csi2_pdata *pdata = priv->pdev->dev.platform_data;
+ unsigned long common_flags, csi2_flags;
+ struct v4l2_mbus_config client_cfg = {.type = V4L2_MBUS_CSI2,};
+ int ret;
+
+ /* Check if we can support this camera */
+ csi2_flags = V4L2_MBUS_CSI2_CONTINUOUS_CLOCK |
+ V4L2_MBUS_CSI2_1_LANE;
+
+ switch (pdata->type) {
+ case SH_CSI2C:
+ if (priv->client->lanes != 1)
+ csi2_flags |= V4L2_MBUS_CSI2_2_LANE;
+ break;
+ case SH_CSI2I:
+ switch (priv->client->lanes) {
+ default:
+ csi2_flags |= V4L2_MBUS_CSI2_4_LANE;
+ case 3:
+ csi2_flags |= V4L2_MBUS_CSI2_3_LANE;
+ case 2:
+ csi2_flags |= V4L2_MBUS_CSI2_2_LANE;
+ }
+ }
+
+ ret = v4l2_subdev_call(client_sd, video, g_mbus_config, &client_cfg);
+ if (ret == -ENOIOCTLCMD)
+ common_flags = csi2_flags;
+ else if (!ret)
+ common_flags = soc_mbus_config_compatible(&client_cfg,
+ csi2_flags);
+ else
+ common_flags = 0;
+
+ if (!common_flags)
+ return -EINVAL;
+
+ /* All good: camera MIPI configuration supported */
+ priv->mipi_flags = common_flags;
+ }
+
+ if (cfg) {
+ cfg->flags = V4L2_MBUS_PCLK_SAMPLE_RISING |
+ V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_HIGH |
+ V4L2_MBUS_MASTER | V4L2_MBUS_DATA_ACTIVE_HIGH;
+ cfg->type = V4L2_MBUS_PARALLEL;
+ }
return 0;
}
struct sh_csi2 *priv = container_of(sd, struct sh_csi2, subdev);
struct soc_camera_device *icd = v4l2_get_subdev_hostdata(sd);
struct v4l2_subdev *client_sd = soc_camera_to_subdev(icd);
- struct v4l2_mbus_config client_cfg = {.type = V4L2_MBUS_CSI2,
- .flags = priv->mipi_flags};
+ struct v4l2_mbus_config client_cfg = {.type = V4L2_MBUS_CSI2,};
+ int ret = sh_csi2_g_mbus_config(sd, NULL);
+
+ if (ret < 0)
+ return ret;
+
+ pm_runtime_get_sync(&priv->pdev->dev);
+
+ sh_csi2_hwinit(priv);
+
+ client_cfg.flags = priv->mipi_flags;
return v4l2_subdev_call(client_sd, video, s_mbus_config, &client_cfg);
}
static int sh_csi2_client_connect(struct sh_csi2 *priv)
{
- struct sh_csi2_pdata *pdata = priv->pdev->dev.platform_data;
- struct soc_camera_device *icd = v4l2_get_subdev_hostdata(&priv->subdev);
- struct v4l2_subdev *client_sd = soc_camera_to_subdev(icd);
struct device *dev = v4l2_get_subdevdata(&priv->subdev);
- struct v4l2_mbus_config cfg;
- unsigned long common_flags, csi2_flags;
- int i, ret;
+ struct sh_csi2_pdata *pdata = dev->platform_data;
+ struct soc_camera_device *icd = v4l2_get_subdev_hostdata(&priv->subdev);
+ int i;
if (priv->client)
return -EBUSY;
for (i = 0; i < pdata->num_clients; i++)
- if (&pdata->clients[i].pdev->dev == icd->pdev)
+ if ((pdata->clients[i].pdev &&
+ &pdata->clients[i].pdev->dev == icd->pdev) ||
+ (icd->control &&
+ strcmp(pdata->clients[i].name, dev_name(icd->control))))
break;
dev_dbg(dev, "%s(%p): found #%d\n", __func__, dev, i);
if (i == pdata->num_clients)
return -ENODEV;
- /* Check if we can support this camera */
- csi2_flags = V4L2_MBUS_CSI2_CONTINUOUS_CLOCK | V4L2_MBUS_CSI2_1_LANE;
-
- switch (pdata->type) {
- case SH_CSI2C:
- if (pdata->clients[i].lanes != 1)
- csi2_flags |= V4L2_MBUS_CSI2_2_LANE;
- break;
- case SH_CSI2I:
- switch (pdata->clients[i].lanes) {
- default:
- csi2_flags |= V4L2_MBUS_CSI2_4_LANE;
- case 3:
- csi2_flags |= V4L2_MBUS_CSI2_3_LANE;
- case 2:
- csi2_flags |= V4L2_MBUS_CSI2_2_LANE;
- }
- }
-
- cfg.type = V4L2_MBUS_CSI2;
- ret = v4l2_subdev_call(client_sd, video, g_mbus_config, &cfg);
- if (ret == -ENOIOCTLCMD)
- common_flags = csi2_flags;
- else if (!ret)
- common_flags = soc_mbus_config_compatible(&cfg,
- csi2_flags);
- else
- common_flags = 0;
-
- if (!common_flags)
- return -EINVAL;
-
- /* All good: camera MIPI configuration supported */
- priv->mipi_flags = common_flags;
priv->client = pdata->clients + i;
- pm_runtime_get_sync(dev);
-
- sh_csi2_hwinit(priv);
-
return 0;
}
/* Platform data specify the PHY, lanes, ECC, CRC */
struct sh_csi2_pdata *pdata = pdev->dev.platform_data;
+ if (!pdata)
+ return -EINVAL;
+
+ priv = devm_kzalloc(&pdev->dev, sizeof(struct sh_csi2), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
/* Interrupt unused so far */
irq = platform_get_irq(pdev, 0);
- if (!res || (int)irq <= 0 || !pdata) {
+ if (!res || (int)irq <= 0) {
dev_err(&pdev->dev, "Not enough CSI2 platform resources.\n");
return -ENODEV;
}
return -EINVAL;
}
- priv = devm_kzalloc(&pdev->dev, sizeof(struct sh_csi2), GFP_KERNEL);
- if (!priv)
- return -ENOMEM;
-
priv->irq = irq;
priv->base = devm_ioremap_resource(&pdev->dev, res);
return PTR_ERR(priv->base);
priv->pdev = pdev;
- platform_set_drvdata(pdev, priv);
+ priv->subdev.owner = THIS_MODULE;
+ priv->subdev.dev = &pdev->dev;
+ platform_set_drvdata(pdev, &priv->subdev);
v4l2_subdev_init(&priv->subdev, &sh_csi2_subdev_ops);
v4l2_set_subdevdata(&priv->subdev, &pdev->dev);
snprintf(priv->subdev.name, V4L2_SUBDEV_NAME_SIZE, "%s.mipi-csi",
- dev_name(pdata->v4l2_dev->dev));
- ret = v4l2_device_register_subdev(pdata->v4l2_dev, &priv->subdev);
- dev_dbg(&pdev->dev, "%s(%p): ret(register_subdev) = %d\n", __func__, priv, ret);
+ dev_name(&pdev->dev));
+
+ ret = v4l2_async_register_subdev(&priv->subdev);
if (ret < 0)
return ret;
static int sh_csi2_remove(struct platform_device *pdev)
{
- struct sh_csi2 *priv = platform_get_drvdata(pdev);
+ struct v4l2_subdev *subdev = platform_get_drvdata(pdev);
+ struct sh_csi2 *priv = container_of(subdev, struct sh_csi2, subdev);
- v4l2_device_unregister_subdev(&priv->subdev);
+ v4l2_async_unregister_subdev(&priv->subdev);
+ v4l2_device_unregister_subdev(subdev);
pm_runtime_disable(&pdev->dev);
return 0;
int max_width;
int max_height;
struct sh_mobile_ceu_companion *csi2;
+ struct v4l2_async_subdev **asd; /* Flat array, arranged in groups */
+ int *asd_sizes; /* 0-terminated array pf asd group sizes */
};
#endif /* __ASM_SH_MOBILE_CEU_H__ */
unsigned char lanes; /* bitmask[3:0] */
unsigned char channel; /* 0..3 */
struct platform_device *pdev; /* client platform device */
+ const char *name; /* async matching: client name */
};
struct v4l2_device;
unsigned int flags;
struct sh_csi2_client_config *clients;
int num_clients;
- struct v4l2_device *v4l2_dev;
};
#endif
projects / openwrt / staging / blogic.git / commitdiff