diff options
Diffstat (limited to 'drivers/media/platform/soc_camera/sh_mobile_csi2.c')
-rw-r--r-- | drivers/media/platform/soc_camera/sh_mobile_csi2.c | 153 |
1 files changed, 90 insertions, 63 deletions
diff --git a/drivers/media/platform/soc_camera/sh_mobile_csi2.c b/drivers/media/platform/soc_camera/sh_mobile_csi2.c index 13a1f8f13f65..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); @@ -330,15 +353,17 @@ 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) return ret; @@ -351,9 +376,11 @@ static int sh_csi2_probe(struct platform_device *pdev) 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; |