V4L/DVB (12506): soc-camera: convert to platform device

Convert soc-camera core and all drivers to platform device API. We already
converted platforms to register a platform device for each soc-camera client,
now we remove the compatibility code and switch completely to the new scheme.
This is a preparatory step for the v4l2-subdev conversion.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 86 insertions, 71 deletions

diff --git a/drivers/media/video/ov772x.c b/drivers/media/video/ov772x.c
index 0bce255168bd..3ea650d55b17 100644
--- a/drivers/media/video/ov772x.c
+++ b/drivers/media/video/ov772x.c
@@ -399,8 +399,6 @@ struct ov772x_win_size {
 
 struct ov772x_priv {
         struct ov772x_camera_info        *info;
-        struct i2c_client                *client;
-        struct soc_camera_device          icd;
         const struct ov772x_color_format *fmt;
         const struct ov772x_win_size     *win;
         int                               model;
@@ -619,53 +617,56 @@ static int ov772x_reset(struct i2c_client *client)
 
 static int ov772x_init(struct soc_camera_device *icd)
 {
-        struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
+        struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+        struct soc_camera_link *icl = to_soc_camera_link(icd);
         int ret = 0;
 
-        if (priv->info->link.power) {
-                ret = priv->info->link.power(&priv->client->dev, 1);
+        if (icl->power) {
+                ret = icl->power(&client->dev, 1);
                 if (ret < 0)
                         return ret;
         }
 
-        if (priv->info->link.reset)
-                ret = priv->info->link.reset(&priv->client->dev);
+        if (icl->reset)
+                ret = icl->reset(&client->dev);
 
         return ret;
 }
 
 static int ov772x_release(struct soc_camera_device *icd)
 {
-        struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
+        struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+        struct soc_camera_link *icl = to_soc_camera_link(icd);
         int ret = 0;
 
-        if (priv->info->link.power)
-                ret = priv->info->link.power(&priv->client->dev, 0);
+        if (icl->power)
+                ret = icl->power(&client->dev, 0);
 
         return ret;
 }
 
 static int ov772x_start_capture(struct soc_camera_device *icd)
 {
-        struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
+        struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+        struct ov772x_priv *priv = i2c_get_clientdata(client);
 
         if (!priv->win || !priv->fmt) {
                 dev_err(&icd->dev, "norm or win select error\n");
                 return -EPERM;
         }
 
-        ov772x_mask_set(priv->client, COM2, SOFT_SLEEP_MODE, 0);
+        ov772x_mask_set(client, COM2, SOFT_SLEEP_MODE, 0);
 
         dev_dbg(&icd->dev,
-                 "format %s, win %s\n", priv->fmt->name, priv->win->name);
+                "format %s, win %s\n", priv->fmt->name, priv->win->name);
 
         return 0;
 }
 
 static int ov772x_stop_capture(struct soc_camera_device *icd)
 {
-        struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
-        ov772x_mask_set(priv->client, COM2, SOFT_SLEEP_MODE, SOFT_SLEEP_MODE);
+        struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+        ov772x_mask_set(client, COM2, SOFT_SLEEP_MODE, SOFT_SLEEP_MODE);
         return 0;
 }
 
@@ -677,8 +678,9 @@ static int ov772x_set_bus_param(struct soc_camera_device *icd,
 
 static unsigned long ov772x_query_bus_param(struct soc_camera_device *icd)
 {
-        struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
-        struct soc_camera_link *icl = &priv->info->link;
+        struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+        struct ov772x_priv *priv = i2c_get_clientdata(client);
+        struct soc_camera_link *icl = to_soc_camera_link(icd);
         unsigned long flags = SOCAM_PCLK_SAMPLE_RISING | SOCAM_MASTER |
                 SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_HIGH |
                 SOCAM_DATA_ACTIVE_HIGH | priv->info->buswidth;
@@ -689,7 +691,8 @@ static unsigned long ov772x_query_bus_param(struct soc_camera_device *icd)
 static int ov772x_get_control(struct soc_camera_device *icd,
                               struct v4l2_control *ctrl)
 {
-        struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
+        struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+        struct ov772x_priv *priv = i2c_get_clientdata(client);
 
         switch (ctrl->id) {
         case V4L2_CID_VFLIP:
@@ -705,7 +708,8 @@ static int ov772x_get_control(struct soc_camera_device *icd,
 static int ov772x_set_control(struct soc_camera_device *icd,
                               struct v4l2_control *ctrl)
 {
-        struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
+        struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+        struct ov772x_priv *priv = i2c_get_clientdata(client);
         int ret = 0;
         u8 val;
 
@@ -715,14 +719,14 @@ static int ov772x_set_control(struct soc_camera_device *icd,
                 priv->flag_vflip = ctrl->value;
                 if (priv->info->flags & OV772X_FLAG_VFLIP)
                         val ^= VFLIP_IMG;
-                ret = ov772x_mask_set(priv->client, COM3, VFLIP_IMG, val);
+                ret = ov772x_mask_set(client, COM3, VFLIP_IMG, val);
                 break;
         case V4L2_CID_HFLIP:
                 val = ctrl->value ? HFLIP_IMG : 0x00;
                 priv->flag_hflip = ctrl->value;
                 if (priv->info->flags & OV772X_FLAG_HFLIP)
                         val ^= HFLIP_IMG;
-                ret = ov772x_mask_set(priv->client, COM3, HFLIP_IMG, val);
+                ret = ov772x_mask_set(client, COM3, HFLIP_IMG, val);
                 break;
         }
 
@@ -730,9 +734,10 @@ static int ov772x_set_control(struct soc_camera_device *icd,
 }
 
 static int ov772x_get_chip_id(struct soc_camera_device *icd,
-                              struct v4l2_dbg_chip_ident   *id)
+                              struct v4l2_dbg_chip_ident *id)
 {
-        struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
+        struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+        struct ov772x_priv *priv = i2c_get_clientdata(client);
 
         id->ident    = priv->model;
         id->revision = 0;
@@ -744,14 +749,14 @@ static int ov772x_get_chip_id(struct soc_camera_device *icd,
 static int ov772x_get_register(struct soc_camera_device *icd,
                                struct v4l2_dbg_register *reg)
 {
-        struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
-        int                 ret;
+        struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+        int ret;
 
         reg->size = 1;
         if (reg->reg > 0xff)
                 return -EINVAL;
 
-        ret = i2c_smbus_read_byte_data(priv->client, reg->reg);
+        ret = i2c_smbus_read_byte_data(client, reg->reg);
         if (ret < 0)
                 return ret;
 
@@ -763,13 +768,13 @@ static int ov772x_get_register(struct soc_camera_device *icd,
 static int ov772x_set_register(struct soc_camera_device *icd,
                                struct v4l2_dbg_register *reg)
 {
-        struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
+        struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 
         if (reg->reg > 0xff ||
             reg->val > 0xff)
                 return -EINVAL;
 
-        return i2c_smbus_write_byte_data(priv->client, reg->reg, reg->val);
+        return i2c_smbus_write_byte_data(client, reg->reg, reg->val);
 }
 #endif
 
@@ -793,9 +798,11 @@ ov772x_select_win(u32 width, u32 height)
         return win;
 }
 
-static int ov772x_set_params(struct ov772x_priv *priv, u32 width, u32 height,
-                             u32 pixfmt)
+static int ov772x_set_params(struct soc_camera_device *icd,
+                             u32 width, u32 height, u32 pixfmt)
 {
+        struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+        struct ov772x_priv *priv = i2c_get_clientdata(client);
         int ret = -EINVAL;
         u8  val;
         int i;
@@ -810,6 +817,7 @@ static int ov772x_set_params(struct ov772x_priv *priv, u32 width, u32 height,
                         break;
                 }
         }
+        dev_dbg(&icd->dev, "Using fmt %x #%d\n", pixfmt, i);
         if (!priv->fmt)
                 goto ov772x_set_fmt_error;
 
@@ -821,7 +829,7 @@ static int ov772x_set_params(struct ov772x_priv *priv, u32 width, u32 height,
         /*
          * reset hardware
          */
-        ov772x_reset(priv->client);
+        ov772x_reset(client);
 
         /*
          * Edge Ctrl
@@ -835,17 +843,17 @@ static int ov772x_set_params(struct ov772x_priv *priv, u32 width, u32 height,
                  * Remove it when manual mode.
                  */
 
-                ret = ov772x_mask_set(priv->client, DSPAUTO, EDGE_ACTRL, 0x00);
+                ret = ov772x_mask_set(client, DSPAUTO, EDGE_ACTRL, 0x00);
                 if (ret < 0)
                         goto ov772x_set_fmt_error;
 
-                ret = ov772x_mask_set(priv->client,
+                ret = ov772x_mask_set(client,
                                       EDGE_TRSHLD, EDGE_THRESHOLD_MASK,
                                       priv->info->edgectrl.threshold);
                 if (ret < 0)
                         goto ov772x_set_fmt_error;
 
-                ret = ov772x_mask_set(priv->client,
+                ret = ov772x_mask_set(client,
                                       EDGE_STRNGT, EDGE_STRENGTH_MASK,
                                       priv->info->edgectrl.strength);
                 if (ret < 0)
@@ -857,13 +865,13 @@ static int ov772x_set_params(struct ov772x_priv *priv, u32 width, u32 height,
                  *
                  * set upper and lower limit
                  */
-                ret = ov772x_mask_set(priv->client,
+                ret = ov772x_mask_set(client,
                                       EDGE_UPPER, EDGE_UPPER_MASK,
                                       priv->info->edgectrl.upper);
                 if (ret < 0)
                         goto ov772x_set_fmt_error;
 
-                ret = ov772x_mask_set(priv->client,
+                ret = ov772x_mask_set(client,
                                       EDGE_LOWER, EDGE_LOWER_MASK,
                                       priv->info->edgectrl.lower);
                 if (ret < 0)
@@ -873,7 +881,7 @@ static int ov772x_set_params(struct ov772x_priv *priv, u32 width, u32 height,
         /*
          * set size format
          */
-        ret = ov772x_write_array(priv->client, priv->win->regs);
+        ret = ov772x_write_array(client, priv->win->regs);
         if (ret < 0)
                 goto ov772x_set_fmt_error;
 
@@ -882,7 +890,7 @@ static int ov772x_set_params(struct ov772x_priv *priv, u32 width, u32 height,
          */
         val = priv->fmt->dsp3;
         if (val) {
-                ret = ov772x_mask_set(priv->client,
+                ret = ov772x_mask_set(client,
                                       DSP_CTRL3, UV_MASK, val);
                 if (ret < 0)
                         goto ov772x_set_fmt_error;
@@ -901,7 +909,7 @@ static int ov772x_set_params(struct ov772x_priv *priv, u32 width, u32 height,
         if (priv->flag_hflip)
                 val ^= HFLIP_IMG;
 
-        ret = ov772x_mask_set(priv->client,
+        ret = ov772x_mask_set(client,
                               COM3, SWAP_MASK | IMG_MASK, val);
         if (ret < 0)
                 goto ov772x_set_fmt_error;
@@ -910,7 +918,7 @@ static int ov772x_set_params(struct ov772x_priv *priv, u32 width, u32 height,
          * set COM7
          */
         val = priv->win->com7_bit | priv->fmt->com7;
-        ret = ov772x_mask_set(priv->client,
+        ret = ov772x_mask_set(client,
                               COM7, (SLCT_MASK | FMT_MASK | OFMT_MASK),
                               val);
         if (ret < 0)
@@ -920,7 +928,7 @@ static int ov772x_set_params(struct ov772x_priv *priv, u32 width, u32 height,
 
 ov772x_set_fmt_error:
 
-        ov772x_reset(priv->client);
+        ov772x_reset(client);
         priv->win = NULL;
         priv->fmt = NULL;
 
@@ -930,22 +938,22 @@ ov772x_set_fmt_error:
 static int ov772x_set_crop(struct soc_camera_device *icd,
                            struct v4l2_rect *rect)
 {
-        struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
+        struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+        struct ov772x_priv *priv = i2c_get_clientdata(client);
 
         if (!priv->fmt)
                 return -EINVAL;
 
-        return ov772x_set_params(priv, rect->width, rect->height,
+        return ov772x_set_params(icd, rect->width, rect->height,
                                  priv->fmt->fourcc);
 }
 
 static int ov772x_set_fmt(struct soc_camera_device *icd,
                           struct v4l2_format *f)
 {
-        struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
         struct v4l2_pix_format *pix = &f->fmt.pix;
 
-        return ov772x_set_params(priv, pix->width, pix->height,
+        return ov772x_set_params(icd, pix->width, pix->height,
                                  pix->pixelformat);
 }
 
@@ -967,11 +975,13 @@ static int ov772x_try_fmt(struct soc_camera_device *icd,
         return 0;
 }
 
-static int ov772x_video_probe(struct soc_camera_device *icd)
+static int ov772x_video_probe(struct soc_camera_device *icd,
+                              struct i2c_client *client)
 {
-        struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
+        struct ov772x_priv *priv = i2c_get_clientdata(client);
         u8                  pid, ver;
         const char         *devname;
+        int ret;
 
         /*
          * We must have a parent by now. And it cannot be a wrong one.
@@ -993,11 +1003,16 @@ static int ov772x_video_probe(struct soc_camera_device *icd)
         icd->formats     = ov772x_fmt_lists;
         icd->num_formats = ARRAY_SIZE(ov772x_fmt_lists);
 
+        /* Switch master clock on */
+        ret = soc_camera_video_start(icd, &client->dev);
+        if (ret)
+                return ret;
+
         /*
          * check and show product ID and manufacturer ID
          */
-        pid = i2c_smbus_read_byte_data(priv->client, PID);
-        ver = i2c_smbus_read_byte_data(priv->client, VER);
+        pid = i2c_smbus_read_byte_data(client, PID);
+        ver = i2c_smbus_read_byte_data(client, VER);
 
         switch (VERSION(pid, ver)) {
         case OV7720:
@@ -1011,7 +1026,8 @@ static int ov772x_video_probe(struct soc_camera_device *icd)
         default:
                 dev_err(&icd->dev,
                         "Product ID error %x:%x\n", pid, ver);
-                return -ENODEV;
+                ret = -ENODEV;
+                goto ever;
         }
 
         dev_info(&icd->dev,
@@ -1019,21 +1035,17 @@ static int ov772x_video_probe(struct soc_camera_device *icd)
                  devname,
                  pid,
                  ver,
-                 i2c_smbus_read_byte_data(priv->client, MIDH),
-                 i2c_smbus_read_byte_data(priv->client, MIDL));
-
-        return soc_camera_video_start(icd);
-}
+                 i2c_smbus_read_byte_data(client, MIDH),
+                 i2c_smbus_read_byte_data(client, MIDL));
 
-static void ov772x_video_remove(struct soc_camera_device *icd)
-{
         soc_camera_video_stop(icd);
+
+ever:
+        return ret;
 }
 
 static struct soc_camera_ops ov772x_ops = {
         .owner                  = THIS_MODULE,
-        .probe                  = ov772x_video_probe,
-        .remove                 = ov772x_video_remove,
         .init                   = ov772x_init,
         .release                = ov772x_release,
         .start_capture          = ov772x_start_capture,
@@ -1059,19 +1071,25 @@ static struct soc_camera_ops ov772x_ops = {
  */
 
 static int ov772x_probe(struct i2c_client *client,
-                         const struct i2c_device_id *did)
+                        const struct i2c_device_id *did)
 {
         struct ov772x_priv        *priv;
         struct ov772x_camera_info *info;
-        struct soc_camera_device  *icd;
+        struct soc_camera_device  *icd = client->dev.platform_data;
         struct i2c_adapter        *adapter = to_i2c_adapter(client->dev.parent);
+        struct soc_camera_link    *icl;
         int                        ret;
 
-        if (!client->dev.platform_data)
+        if (!icd) {
+                dev_err(&client->dev, "MT9M001: missing soc-camera data!\n");
                 return -EINVAL;
+        }
 
-        info = container_of(client->dev.platform_data,
-                            struct ov772x_camera_info, link);
+        icl = to_soc_camera_link(icd);
+        if (!icl)
+                return -EINVAL;
+
+        info = container_of(icl, struct ov772x_camera_info, link);
 
         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
                 dev_err(&adapter->dev,
@@ -1085,19 +1103,15 @@ static int ov772x_probe(struct i2c_client *client,
                 return -ENOMEM;
 
         priv->info   = info;
-        priv->client = client;
         i2c_set_clientdata(client, priv);
 
-        icd             = &priv->icd;
         icd->ops        = &ov772x_ops;
-        icd->control    = &client->dev;
         icd->width_max  = MAX_WIDTH;
         icd->height_max = MAX_HEIGHT;
-        icd->iface      = priv->info->link.bus_id;
-
-        ret = soc_camera_device_register(icd);
 
+        ret = ov772x_video_probe(icd, client);
         if (ret) {
+                icd->ops = NULL;
                 i2c_set_clientdata(client, NULL);
                 kfree(priv);
         }
@@ -1108,8 +1122,9 @@ static int ov772x_probe(struct i2c_client *client,
 static int ov772x_remove(struct i2c_client *client)
 {
         struct ov772x_priv *priv = i2c_get_clientdata(client);
+        struct soc_camera_device *icd = client->dev.platform_data;
 
-        soc_camera_device_unregister(&priv->icd);
+        icd->ops = NULL;
         i2c_set_clientdata(client, NULL);
         kfree(priv);
         return 0;