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path: root/drivers/media/platform/soc_camera/sh_mobile_csi2.c
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Diffstat (limited to 'drivers/media/platform/soc_camera/sh_mobile_csi2.c')
-rw-r--r--drivers/media/platform/soc_camera/sh_mobile_csi2.c161
1 files changed, 91 insertions, 70 deletions
diff --git a/drivers/media/platform/soc_camera/sh_mobile_csi2.c b/drivers/media/platform/soc_camera/sh_mobile_csi2.c
index 09cb4fc88f34..05dd21a35d63 100644
--- a/drivers/media/platform/soc_camera/sh_mobile_csi2.c
+++ b/drivers/media/platform/soc_camera/sh_mobile_csi2.c
@@ -36,7 +36,6 @@
struct sh_csi2 {
struct v4l2_subdev subdev;
- struct list_head list;
unsigned int irq;
unsigned long mipi_flags;
void __iomem *base;
@@ -44,6 +43,8 @@ struct sh_csi2 {
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)
{
@@ -132,10 +133,58 @@ static int sh_csi2_s_fmt(struct v4l2_subdev *sd,
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;
}
@@ -146,8 +195,17 @@ static int sh_csi2_s_mbus_config(struct v4l2_subdev *sd,
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);
}
@@ -202,19 +260,19 @@ static void sh_csi2_hwinit(struct sh_csi2 *priv)
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);
@@ -222,46 +280,8 @@ static int sh_csi2_client_connect(struct sh_csi2 *priv)
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;
}
@@ -304,11 +324,18 @@ static int sh_csi2_probe(struct platform_device *pdev)
/* 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;
}
@@ -319,10 +346,6 @@ static int sh_csi2_probe(struct platform_device *pdev)
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);
@@ -330,37 +353,35 @@ static int sh_csi2_probe(struct platform_device *pdev)
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)
- goto esdreg;
+ return ret;
pm_runtime_enable(&pdev->dev);
dev_dbg(&pdev->dev, "CSI2 probed.\n");
return 0;
-
-esdreg:
- platform_set_drvdata(pdev, NULL);
-
- 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);
- platform_set_drvdata(pdev, NULL);
return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-26 04:48:17 +0000