V4L/DVB (10862): indycam: convert to v4l2_subdev
Hans Verkuil [Fri, 13 Feb 2009 22:38:10 +0000 (19:38 -0300)]
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/indycam.c
include/media/v4l2-chip-ident.h

index 54099e3..eb5078c 100644 (file)
@@ -22,7 +22,8 @@
 /* IndyCam decodes stream of photons into digital image representation ;-) */
 #include <linux/videodev2.h>
 #include <linux/i2c.h>
-#include <media/v4l2-common.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-i2c-drv-legacy.h>
 
 #include "indycam.h"
@@ -49,10 +50,15 @@ I2C_CLIENT_INSMOD;
 #endif
 
 struct indycam {
-       struct i2c_client *client;
+       struct v4l2_subdev sd;
        u8 version;
 };
 
+static inline struct indycam *to_indycam(struct v4l2_subdev *sd)
+{
+       return container_of(sd, struct indycam, sd);
+}
+
 static const u8 initseq[] = {
        INDYCAM_CONTROL_AGCENA,         /* INDYCAM_CONTROL */
        INDYCAM_SHUTTER_60,             /* INDYCAM_SHUTTER */
@@ -66,8 +72,9 @@ static const u8 initseq[] = {
 
 /* IndyCam register handling */
 
-static int indycam_read_reg(struct i2c_client *client, u8 reg, u8 *value)
+static int indycam_read_reg(struct v4l2_subdev *sd, u8 reg, u8 *value)
 {
+       struct i2c_client *client = v4l2_get_subdevdata(sd);
        int ret;
 
        if (reg == INDYCAM_REG_RESET) {
@@ -90,12 +97,12 @@ static int indycam_read_reg(struct i2c_client *client, u8 reg, u8 *value)
        return 0;
 }
 
-static int indycam_write_reg(struct i2c_client *client, u8 reg, u8 value)
+static int indycam_write_reg(struct v4l2_subdev *sd, u8 reg, u8 value)
 {
+       struct i2c_client *client = v4l2_get_subdevdata(sd);
        int err;
 
-       if ((reg == INDYCAM_REG_BRIGHTNESS)
-           || (reg == INDYCAM_REG_VERSION)) {
+       if (reg == INDYCAM_REG_BRIGHTNESS || reg == INDYCAM_REG_VERSION) {
                dprintk("indycam_write_reg(): "
                        "skipping read-only register %d\n", reg);
                return 0;
@@ -111,13 +118,13 @@ static int indycam_write_reg(struct i2c_client *client, u8 reg, u8 value)
        return err;
 }
 
-static int indycam_write_block(struct i2c_client *client, u8 reg,
+static int indycam_write_block(struct v4l2_subdev *sd, u8 reg,
                               u8 length, u8 *data)
 {
        int i, err;
 
        for (i = 0; i < length; i++) {
-               err = indycam_write_reg(client, reg + i, data[i]);
+               err = indycam_write_reg(sd, reg + i, data[i]);
                if (err)
                        return err;
        }
@@ -128,29 +135,28 @@ static int indycam_write_block(struct i2c_client *client, u8 reg,
 /* Helper functions */
 
 #ifdef INDYCAM_DEBUG
-static void indycam_regdump_debug(struct i2c_client *client)
+static void indycam_regdump_debug(struct v4l2_subdev *sd)
 {
        int i;
        u8 val;
 
        for (i = 0; i < 9; i++) {
-               indycam_read_reg(client, i, &val);
+               indycam_read_reg(sd, i, &val);
                dprintk("Reg %d = 0x%02x\n", i, val);
        }
 }
 #endif
 
-static int indycam_get_control(struct i2c_client *client,
-                              struct v4l2_control *ctrl)
+static int indycam_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
 {
-       struct indycam *camera = i2c_get_clientdata(client);
+       struct indycam *camera = to_indycam(sd);
        u8 reg;
        int ret = 0;
 
        switch (ctrl->id) {
        case V4L2_CID_AUTOGAIN:
        case V4L2_CID_AUTO_WHITE_BALANCE:
-               ret = indycam_read_reg(client, INDYCAM_REG_CONTROL, &reg);
+               ret = indycam_read_reg(sd, INDYCAM_REG_CONTROL, &reg);
                if (ret)
                        return -EIO;
                if (ctrl->id == V4L2_CID_AUTOGAIN)
@@ -161,38 +167,38 @@ static int indycam_get_control(struct i2c_client *client,
                                ? 1 : 0;
                break;
        case V4L2_CID_EXPOSURE:
-               ret = indycam_read_reg(client, INDYCAM_REG_SHUTTER, &reg);
+               ret = indycam_read_reg(sd, INDYCAM_REG_SHUTTER, &reg);
                if (ret)
                        return -EIO;
                ctrl->value = ((s32)reg == 0x00) ? 0xff : ((s32)reg - 1);
                break;
        case V4L2_CID_GAIN:
-               ret = indycam_read_reg(client, INDYCAM_REG_GAIN, &reg);
+               ret = indycam_read_reg(sd, INDYCAM_REG_GAIN, &reg);
                if (ret)
                        return -EIO;
                ctrl->value = (s32)reg;
                break;
        case V4L2_CID_RED_BALANCE:
-               ret = indycam_read_reg(client, INDYCAM_REG_RED_BALANCE, &reg);
+               ret = indycam_read_reg(sd, INDYCAM_REG_RED_BALANCE, &reg);
                if (ret)
                        return -EIO;
                ctrl->value = (s32)reg;
                break;
        case V4L2_CID_BLUE_BALANCE:
-               ret = indycam_read_reg(client, INDYCAM_REG_BLUE_BALANCE, &reg);
+               ret = indycam_read_reg(sd, INDYCAM_REG_BLUE_BALANCE, &reg);
                if (ret)
                        return -EIO;
                ctrl->value = (s32)reg;
                break;
        case INDYCAM_CONTROL_RED_SATURATION:
-               ret = indycam_read_reg(client,
+               ret = indycam_read_reg(sd,
                                       INDYCAM_REG_RED_SATURATION, &reg);
                if (ret)
                        return -EIO;
                ctrl->value = (s32)reg;
                break;
        case INDYCAM_CONTROL_BLUE_SATURATION:
-               ret = indycam_read_reg(client,
+               ret = indycam_read_reg(sd,
                                       INDYCAM_REG_BLUE_SATURATION, &reg);
                if (ret)
                        return -EIO;
@@ -200,7 +206,7 @@ static int indycam_get_control(struct i2c_client *client,
                break;
        case V4L2_CID_GAMMA:
                if (camera->version == CAMERA_VERSION_MOOSE) {
-                       ret = indycam_read_reg(client,
+                       ret = indycam_read_reg(sd,
                                               INDYCAM_REG_GAMMA, &reg);
                        if (ret)
                                return -EIO;
@@ -216,17 +222,16 @@ static int indycam_get_control(struct i2c_client *client,
        return ret;
 }
 
-static int indycam_set_control(struct i2c_client *client,
-                              struct v4l2_control *ctrl)
+static int indycam_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
 {
-       struct indycam *camera = i2c_get_clientdata(client);
+       struct indycam *camera = to_indycam(sd);
        u8 reg;
        int ret = 0;
 
        switch (ctrl->id) {
        case V4L2_CID_AUTOGAIN:
        case V4L2_CID_AUTO_WHITE_BALANCE:
-               ret = indycam_read_reg(client, INDYCAM_REG_CONTROL, &reg);
+               ret = indycam_read_reg(sd, INDYCAM_REG_CONTROL, &reg);
                if (ret)
                        break;
 
@@ -242,34 +247,34 @@ static int indycam_set_control(struct i2c_client *client,
                                reg &= ~INDYCAM_CONTROL_AWBCTL;
                }
 
-               ret = indycam_write_reg(client, INDYCAM_REG_CONTROL, reg);
+               ret = indycam_write_reg(sd, INDYCAM_REG_CONTROL, reg);
                break;
        case V4L2_CID_EXPOSURE:
                reg = (ctrl->value == 0xff) ? 0x00 : (ctrl->value + 1);
-               ret = indycam_write_reg(client, INDYCAM_REG_SHUTTER, reg);
+               ret = indycam_write_reg(sd, INDYCAM_REG_SHUTTER, reg);
                break;
        case V4L2_CID_GAIN:
-               ret = indycam_write_reg(client, INDYCAM_REG_GAIN, ctrl->value);
+               ret = indycam_write_reg(sd, INDYCAM_REG_GAIN, ctrl->value);
                break;
        case V4L2_CID_RED_BALANCE:
-               ret = indycam_write_reg(client, INDYCAM_REG_RED_BALANCE,
+               ret = indycam_write_reg(sd, INDYCAM_REG_RED_BALANCE,
                                        ctrl->value);
                break;
        case V4L2_CID_BLUE_BALANCE:
-               ret = indycam_write_reg(client, INDYCAM_REG_BLUE_BALANCE,
+               ret = indycam_write_reg(sd, INDYCAM_REG_BLUE_BALANCE,
                                        ctrl->value);
                break;
        case INDYCAM_CONTROL_RED_SATURATION:
-               ret = indycam_write_reg(client, INDYCAM_REG_RED_SATURATION,
+               ret = indycam_write_reg(sd, INDYCAM_REG_RED_SATURATION,
                                        ctrl->value);
                break;
        case INDYCAM_CONTROL_BLUE_SATURATION:
-               ret = indycam_write_reg(client, INDYCAM_REG_BLUE_SATURATION,
+               ret = indycam_write_reg(sd, INDYCAM_REG_BLUE_SATURATION,
                                        ctrl->value);
                break;
        case V4L2_CID_GAMMA:
                if (camera->version == CAMERA_VERSION_MOOSE) {
-                       ret = indycam_write_reg(client, INDYCAM_REG_GAMMA,
+                       ret = indycam_write_reg(sd, INDYCAM_REG_GAMMA,
                                                ctrl->value);
                }
                break;
@@ -282,30 +287,39 @@ static int indycam_set_control(struct i2c_client *client,
 
 /* I2C-interface */
 
-static int indycam_command(struct i2c_client *client, unsigned int cmd,
-                          void *arg)
+static int indycam_g_chip_ident(struct v4l2_subdev *sd,
+               struct v4l2_dbg_chip_ident *chip)
 {
-       /* The old video_decoder interface just isn't enough,
-        * so we'll use some custom commands. */
-       switch (cmd) {
-       case VIDIOC_G_CTRL:
-               return indycam_get_control(client, arg);
-
-       case VIDIOC_S_CTRL:
-               return indycam_set_control(client, arg);
+       struct i2c_client *client = v4l2_get_subdevdata(sd);
+       struct indycam *camera = to_indycam(sd);
 
-       default:
-               return -EINVAL;
-       }
+       return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_INDYCAM,
+                      camera->version);
+}
 
-       return 0;
+static int indycam_command(struct i2c_client *client, unsigned cmd, void *arg)
+{
+       return v4l2_subdev_command(i2c_get_clientdata(client), cmd, arg);
 }
 
+/* ----------------------------------------------------------------------- */
+
+static const struct v4l2_subdev_core_ops indycam_core_ops = {
+       .g_chip_ident = indycam_g_chip_ident,
+       .g_ctrl = indycam_g_ctrl,
+       .s_ctrl = indycam_s_ctrl,
+};
+
+static const struct v4l2_subdev_ops indycam_ops = {
+       .core = &indycam_core_ops,
+};
+
 static int indycam_probe(struct i2c_client *client,
                          const struct i2c_device_id *id)
 {
        int err = 0;
        struct indycam *camera;
+       struct v4l2_subdev *sd;
 
        v4l_info(client, "chip found @ 0x%x (%s)\n",
                        client->addr << 1, client->adapter->name);
@@ -314,9 +328,8 @@ static int indycam_probe(struct i2c_client *client,
        if (!camera)
                return -ENOMEM;
 
-       i2c_set_clientdata(client, camera);
-
-       camera->client = client;
+       sd = &camera->sd;
+       v4l2_i2c_subdev_init(sd, client, &indycam_ops);
 
        camera->version = i2c_smbus_read_byte_data(client,
                                                   INDYCAM_REG_VERSION);
@@ -330,20 +343,20 @@ static int indycam_probe(struct i2c_client *client,
               INDYCAM_VERSION_MAJOR(camera->version),
               INDYCAM_VERSION_MINOR(camera->version));
 
-       indycam_regdump(client);
+       indycam_regdump(sd);
 
        // initialize
-       err = indycam_write_block(client, 0, sizeof(initseq), (u8 *)&initseq);
+       err = indycam_write_block(sd, 0, sizeof(initseq), (u8 *)&initseq);
        if (err) {
                printk(KERN_ERR "IndyCam initialization failed\n");
                kfree(camera);
                return -EIO;
        }
 
-       indycam_regdump(client);
+       indycam_regdump(sd);
 
        // white balance
-       err = indycam_write_reg(client, INDYCAM_REG_CONTROL,
+       err = indycam_write_reg(sd, INDYCAM_REG_CONTROL,
                          INDYCAM_CONTROL_AGCENA | INDYCAM_CONTROL_AWBCTL);
        if (err) {
                printk(KERN_ERR "IndyCam: White balancing camera failed\n");
@@ -351,7 +364,7 @@ static int indycam_probe(struct i2c_client *client,
                return -EIO;
        }
 
-       indycam_regdump(client);
+       indycam_regdump(sd);
 
        printk(KERN_INFO "IndyCam initialized\n");
 
@@ -360,9 +373,10 @@ static int indycam_probe(struct i2c_client *client,
 
 static int indycam_remove(struct i2c_client *client)
 {
-       struct indycam *camera = i2c_get_clientdata(client);
+       struct v4l2_subdev *sd = i2c_get_clientdata(client);
 
-       kfree(camera);
+       v4l2_device_unregister_subdev(sd);
+       kfree(to_indycam(sd));
        return 0;
 }
 
index 70117e7..f02517b 100644 (file)
@@ -70,6 +70,9 @@ enum {
        V4L2_IDENT_CX23416 = 416,
        V4L2_IDENT_CX23418 = 418,
 
+       /* module indycam: just ident 2000 */
+       V4L2_IDENT_INDYCAM = 2000,
+
        /* module bt819: reserved range 810-819 */
        V4L2_IDENT_BT815A = 815,
        V4L2_IDENT_BT817A = 817,