V4L/DVB (10655): tvp514x: make the module aware of rich people

because they might design two of those chips on a single board.
You never know.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 60 insertions, 46 deletions

diff --git a/drivers/media/video/tvp514x.c b/drivers/media/video/tvp514x.c
index 5f4cbc2b23c1..f0b2b8ed2fe4 100644
--- a/drivers/media/video/tvp514x.c
+++ b/drivers/media/video/tvp514x.c
@@ -86,9 +86,12 @@ struct tvp514x_std_info {
         struct v4l2_standard standard;
 };
 
+static struct tvp514x_reg tvp514x_reg_list_default[0x40];
 /**
- * struct tvp514x_decoded - TVP5146/47 decoder object
+ * struct tvp514x_decoder - TVP5146/47 decoder object
  * @v4l2_int_device: Slave handle
+ * @tvp514x_slave: Slave pointer which is used by @v4l2_int_device
+ * @tvp514x_regs: copy of hw's regs with preset values.
  * @pdata: Board specific
  * @client: I2C client data
  * @id: Entry from I2C table
@@ -103,7 +106,9 @@ struct tvp514x_std_info {
  * @route: input and output routing at chip level
  */
 struct tvp514x_decoder {
-        struct v4l2_int_device *v4l2_int_device;
+        struct v4l2_int_device v4l2_int_device;
+        struct v4l2_int_slave tvp514x_slave;
+        struct tvp514x_reg tvp514x_regs[ARRAY_SIZE(tvp514x_reg_list_default)];
         const struct tvp514x_platform_data *pdata;
         struct i2c_client *client;
 
@@ -124,7 +129,7 @@ struct tvp514x_decoder {
 };
 
 /* TVP514x default register values */
-static struct tvp514x_reg tvp514x_reg_list[] = {
+static struct tvp514x_reg tvp514x_reg_list_default[] = {
         {TOK_WRITE, REG_INPUT_SEL, 0x05},       /* Composite selected */
         {TOK_WRITE, REG_AFE_GAIN_CTRL, 0x0F},
         {TOK_WRITE, REG_VIDEO_STD, 0x00},       /* Auto mode */
@@ -422,7 +427,7 @@ static int tvp514x_configure(struct tvp514x_decoder *decoder)
 
         /* common register initialization */
         err =
-            tvp514x_write_regs(decoder->client, tvp514x_reg_list);
+            tvp514x_write_regs(decoder->client, decoder->tvp514x_regs);
         if (err)
                 return err;
 
@@ -580,7 +585,8 @@ static int ioctl_s_std(struct v4l2_int_device *s, v4l2_std_id *std_id)
                 return err;
 
         decoder->current_std = i;
-        tvp514x_reg_list[REG_VIDEO_STD].val = decoder->std_list[i].video_std;
+        decoder->tvp514x_regs[REG_VIDEO_STD].val =
+                decoder->std_list[i].video_std;
 
         v4l_dbg(1, debug, decoder->client, "Standard set to: %s",
                         decoder->std_list[i].standard.name);
@@ -625,8 +631,8 @@ static int ioctl_s_routing(struct v4l2_int_device *s,
         if (err)
                 return err;
 
-        tvp514x_reg_list[REG_INPUT_SEL].val = input_sel;
-        tvp514x_reg_list[REG_OUTPUT_FORMATTER1].val = output_sel;
+        decoder->tvp514x_regs[REG_INPUT_SEL].val = input_sel;
+        decoder->tvp514x_regs[REG_OUTPUT_FORMATTER1].val = output_sel;
 
         /* Clear status */
         msleep(LOCK_RETRY_DELAY);
@@ -779,16 +785,16 @@ ioctl_g_ctrl(struct v4l2_int_device *s, struct v4l2_control *ctrl)
 
         switch (ctrl->id) {
         case V4L2_CID_BRIGHTNESS:
-                ctrl->value = tvp514x_reg_list[REG_BRIGHTNESS].val;
+                ctrl->value = decoder->tvp514x_regs[REG_BRIGHTNESS].val;
                 break;
         case V4L2_CID_CONTRAST:
-                ctrl->value = tvp514x_reg_list[REG_CONTRAST].val;
+                ctrl->value = decoder->tvp514x_regs[REG_CONTRAST].val;
                 break;
         case V4L2_CID_SATURATION:
-                ctrl->value = tvp514x_reg_list[REG_SATURATION].val;
+                ctrl->value = decoder->tvp514x_regs[REG_SATURATION].val;
                 break;
         case V4L2_CID_HUE:
-                ctrl->value = tvp514x_reg_list[REG_HUE].val;
+                ctrl->value = decoder->tvp514x_regs[REG_HUE].val;
                 if (ctrl->value == 0x7F)
                         ctrl->value = 180;
                 else if (ctrl->value == 0x80)
@@ -798,7 +804,7 @@ ioctl_g_ctrl(struct v4l2_int_device *s, struct v4l2_control *ctrl)
 
                 break;
         case V4L2_CID_AUTOGAIN:
-                ctrl->value = tvp514x_reg_list[REG_AFE_GAIN_CTRL].val;
+                ctrl->value = decoder->tvp514x_regs[REG_AFE_GAIN_CTRL].val;
                 if ((ctrl->value & 0x3) == 3)
                         ctrl->value = 1;
                 else
@@ -848,7 +854,7 @@ ioctl_s_ctrl(struct v4l2_int_device *s, struct v4l2_control *ctrl)
                                 value);
                 if (err)
                         return err;
-                tvp514x_reg_list[REG_BRIGHTNESS].val = value;
+                decoder->tvp514x_regs[REG_BRIGHTNESS].val = value;
                 break;
         case V4L2_CID_CONTRAST:
                 if (ctrl->value < 0 || ctrl->value > 255) {
@@ -861,7 +867,7 @@ ioctl_s_ctrl(struct v4l2_int_device *s, struct v4l2_control *ctrl)
                                 value);
                 if (err)
                         return err;
-                tvp514x_reg_list[REG_CONTRAST].val = value;
+                decoder->tvp514x_regs[REG_CONTRAST].val = value;
                 break;
         case V4L2_CID_SATURATION:
                 if (ctrl->value < 0 || ctrl->value > 255) {
@@ -874,7 +880,7 @@ ioctl_s_ctrl(struct v4l2_int_device *s, struct v4l2_control *ctrl)
                                 value);
                 if (err)
                         return err;
-                tvp514x_reg_list[REG_SATURATION].val = value;
+                decoder->tvp514x_regs[REG_SATURATION].val = value;
                 break;
         case V4L2_CID_HUE:
                 if (value == 180)
@@ -893,7 +899,7 @@ ioctl_s_ctrl(struct v4l2_int_device *s, struct v4l2_control *ctrl)
                                 value);
                 if (err)
                         return err;
-                tvp514x_reg_list[REG_HUE].val = value;
+                decoder->tvp514x_regs[REG_HUE].val = value;
                 break;
         case V4L2_CID_AUTOGAIN:
                 if (value == 1)
@@ -910,7 +916,7 @@ ioctl_s_ctrl(struct v4l2_int_device *s, struct v4l2_control *ctrl)
                                 value);
                 if (err)
                         return err;
-                tvp514x_reg_list[REG_AFE_GAIN_CTRL].val = value;
+                decoder->tvp514x_regs[REG_AFE_GAIN_CTRL].val = value;
                 break;
         default:
                 v4l_err(decoder->client,
@@ -1275,7 +1281,7 @@ static int ioctl_init(struct v4l2_int_device *s)
         struct tvp514x_decoder *decoder = s->priv;
 
         /* Set default standard to auto */
-        tvp514x_reg_list[REG_VIDEO_STD].val =
+        decoder->tvp514x_regs[REG_VIDEO_STD].val =
             VIDEO_STD_AUTO_SWITCH_BIT;
 
         return tvp514x_configure(decoder);
@@ -1344,11 +1350,6 @@ static struct v4l2_int_ioctl_desc tvp514x_ioctl_desc[] = {
                 (v4l2_int_ioctl_func *) ioctl_s_routing},
 };
 
-static struct v4l2_int_slave tvp514x_slave = {
-        .ioctls = tvp514x_ioctl_desc,
-        .num_ioctls = ARRAY_SIZE(tvp514x_ioctl_desc),
-};
-
 static struct tvp514x_decoder tvp514x_dev = {
         .state = STATE_NOT_DETECTED,
 
@@ -1369,17 +1370,15 @@ static struct tvp514x_decoder tvp514x_dev = {
         .current_std = STD_NTSC_MJ,
         .std_list = tvp514x_std_list,
         .num_stds = ARRAY_SIZE(tvp514x_std_list),
-
-};
-
-static struct v4l2_int_device tvp514x_int_device = {
-        .module = THIS_MODULE,
-        .name = TVP514X_MODULE_NAME,
-        .priv = &tvp514x_dev,
-        .type = v4l2_int_type_slave,
-        .u = {
-              .slave = &tvp514x_slave,
-              },
+        .v4l2_int_device = {
+                .module = THIS_MODULE,
+                .name = TVP514X_MODULE_NAME,
+                .type = v4l2_int_type_slave,
+        },
+        .tvp514x_slave = {
+                .ioctls = tvp514x_ioctl_desc,
+                .num_ioctls = ARRAY_SIZE(tvp514x_ioctl_desc),
+        },
 };
 
 /**
@@ -1392,26 +1391,37 @@ static struct v4l2_int_device tvp514x_int_device = {
 static int
 tvp514x_probe(struct i2c_client *client, const struct i2c_device_id *id)
 {
-        struct tvp514x_decoder *decoder = &tvp514x_dev;
+        struct tvp514x_decoder *decoder;
         int err;
 
         /* Check if the adapter supports the needed features */
         if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
                 return -EIO;
 
-        decoder->pdata = client->dev.platform_data;
-        if (!decoder->pdata) {
+        decoder = kzalloc(sizeof(*decoder), GFP_KERNEL);
+        if (!decoder)
+                return -ENOMEM;
+
+        if (!client->dev.platform_data) {
                 v4l_err(client, "No platform data!!\n");
-                return -ENODEV;
+                err = -ENODEV;
+                goto out_free;
         }
+
+        *decoder = tvp514x_dev;
+        decoder->v4l2_int_device.priv = decoder;
+        decoder->pdata = client->dev.platform_data;
+        decoder->v4l2_int_device.u.slave = &decoder->tvp514x_slave;
+        memcpy(decoder->tvp514x_regs, tvp514x_reg_list_default,
+                        sizeof(tvp514x_reg_list_default));
         /*
          * Fetch platform specific data, and configure the
          * tvp514x_reg_list[] accordingly. Since this is one
          * time configuration, no need to preserve.
          */
-        tvp514x_reg_list[REG_OUTPUT_FORMATTER2].val |=
+        decoder->tvp514x_regs[REG_OUTPUT_FORMATTER2].val |=
                         (decoder->pdata->clk_polarity << 1);
-        tvp514x_reg_list[REG_SYNC_CONTROL].val |=
+        decoder->tvp514x_regs[REG_SYNC_CONTROL].val |=
                         ((decoder->pdata->hs_polarity << 2) |
                         (decoder->pdata->vs_polarity << 3));
         /*
@@ -1419,23 +1429,27 @@ tvp514x_probe(struct i2c_client *client, const struct i2c_device_id *id)
          */
         decoder->id = (struct i2c_device_id *)id;
         /* Attach to Master */
-        strcpy(tvp514x_int_device.u.slave->attach_to, decoder->pdata->master);
-        decoder->v4l2_int_device = &tvp514x_int_device;
+        strcpy(decoder->v4l2_int_device.u.slave->attach_to,
+                        decoder->pdata->master);
         decoder->client = client;
         i2c_set_clientdata(client, decoder);
 
         /* Register with V4L2 layer as slave device */
-        err = v4l2_int_device_register(decoder->v4l2_int_device);
+        err = v4l2_int_device_register(&decoder->v4l2_int_device);
         if (err) {
                 i2c_set_clientdata(client, NULL);
                 v4l_err(client,
                         "Unable to register to v4l2. Err[%d]\n", err);
+                goto out_free;
 
         } else
                 v4l_info(client, "Registered to v4l2 master %s!!\n",
                                 decoder->pdata->master);
-
         return 0;
+
+out_free:
+        kfree(decoder);
+        return err;
 }
 
 /**
@@ -1452,9 +1466,9 @@ static int __exit tvp514x_remove(struct i2c_client *client)
         if (!client->adapter)
                 return -ENODEV; /* our client isn't attached */
 
-        v4l2_int_device_unregister(decoder->v4l2_int_device);
+        v4l2_int_device_unregister(&decoder->v4l2_int_device);
         i2c_set_clientdata(client, NULL);
-
+        kfree(decoder);
         return 0;
 }
 /*