[media] cs5345: use the control framework

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/cs5345.c b/drivers/media/video/cs5345.c
index 9358fe7..5909f25 100644 (file)
--- a/drivers/media/video/cs5345.c
+++ b/drivers/media/video/cs5345.c
@@ -25,6 +25,7 @@
 #include <linux/slab.h>
 #include <media/v4l2-device.h>
 #include <media/v4l2-chip-ident.h>
+#include <media/v4l2-ctrls.h>
 
 MODULE_DESCRIPTION("i2c device driver for cs5345 Audio ADC");
 MODULE_AUTHOR("Hans Verkuil");
@@ -36,6 +37,20 @@ module_param(debug, bool, 0644);
 
 MODULE_PARM_DESC(debug, "Debugging messages, 0=Off (default), 1=On");
 
+struct cs5345_state {
+       struct v4l2_subdev sd;
+       struct v4l2_ctrl_handler hdl;
+};
+
+static inline struct cs5345_state *to_state(struct v4l2_subdev *sd)
+{
+       return container_of(sd, struct cs5345_state, sd);
+}
+
+static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
+{
+       return &container_of(ctrl->handler, struct cs5345_state, hdl)->sd;
+}
 
 /* ----------------------------------------------------------------------- */
 
@@ -65,33 +80,20 @@ static int cs5345_s_routing(struct v4l2_subdev *sd,
        return 0;
 }
 
-static int cs5345_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+static int cs5345_s_ctrl(struct v4l2_ctrl *ctrl)
 {
-       if (ctrl->id == V4L2_CID_AUDIO_MUTE) {
-               ctrl->value = (cs5345_read(sd, 0x04) & 0x08) != 0;
-               return 0;
-       }
-       if (ctrl->id != V4L2_CID_AUDIO_VOLUME)
-               return -EINVAL;
-       ctrl->value = cs5345_read(sd, 0x07) & 0x3f;
-       if (ctrl->value >= 32)
-               ctrl->value = ctrl->value - 64;
-       return 0;
-}
+       struct v4l2_subdev *sd = to_sd(ctrl);
 
-static int cs5345_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
-{
-       if (ctrl->id == V4L2_CID_AUDIO_MUTE) {
-               cs5345_write(sd, 0x04, ctrl->value ? 0x80 : 0);
+       switch (ctrl->id) {
+       case V4L2_CID_AUDIO_MUTE:
+               cs5345_write(sd, 0x04, ctrl->val ? 0x80 : 0);
+               return 0;
+       case V4L2_CID_AUDIO_VOLUME:
+               cs5345_write(sd, 0x07, ((u8)ctrl->val) & 0x3f);
+               cs5345_write(sd, 0x08, ((u8)ctrl->val) & 0x3f);
                return 0;
        }
-       if (ctrl->id != V4L2_CID_AUDIO_VOLUME)
-               return -EINVAL;
-       if (ctrl->value > 24 || ctrl->value < -24)
-               return -EINVAL;
-       cs5345_write(sd, 0x07, ((u8)ctrl->value) & 0x3f);
-       cs5345_write(sd, 0x08, ((u8)ctrl->value) & 0x3f);
-       return 0;
+       return -EINVAL;
 }
 
 #ifdef CONFIG_VIDEO_ADV_DEBUG
@@ -144,11 +146,20 @@ static int cs5345_log_status(struct v4l2_subdev *sd)
 
 /* ----------------------------------------------------------------------- */
 
+static const struct v4l2_ctrl_ops cs5345_ctrl_ops = {
+       .s_ctrl = cs5345_s_ctrl,
+};
+
 static const struct v4l2_subdev_core_ops cs5345_core_ops = {
        .log_status = cs5345_log_status,
        .g_chip_ident = cs5345_g_chip_ident,
-       .g_ctrl = cs5345_g_ctrl,
-       .s_ctrl = cs5345_s_ctrl,
+       .g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
+       .try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
+       .s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
+       .g_ctrl = v4l2_subdev_g_ctrl,
+       .s_ctrl = v4l2_subdev_s_ctrl,
+       .queryctrl = v4l2_subdev_queryctrl,
+       .querymenu = v4l2_subdev_querymenu,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
        .g_register = cs5345_g_register,
        .s_register = cs5345_s_register,
@@ -169,6 +180,7 @@ static const struct v4l2_subdev_ops cs5345_ops = {
 static int cs5345_probe(struct i2c_client *client,
                        const struct i2c_device_id *id)
 {
+       struct cs5345_state *state;
        struct v4l2_subdev *sd;
 
        /* Check if the adapter supports the needed features */
@@ -178,11 +190,28 @@ static int cs5345_probe(struct i2c_client *client,
        v4l_info(client, "chip found @ 0x%x (%s)\n",
                        client->addr << 1, client->adapter->name);
 
-       sd = kzalloc(sizeof(struct v4l2_subdev), GFP_KERNEL);
-       if (sd == NULL)
+       state = kzalloc(sizeof(struct cs5345_state), GFP_KERNEL);
+       if (state == NULL)
                return -ENOMEM;
+       sd = &state->sd;
        v4l2_i2c_subdev_init(sd, client, &cs5345_ops);
 
+       v4l2_ctrl_handler_init(&state->hdl, 2);
+       v4l2_ctrl_new_std(&state->hdl, &cs5345_ctrl_ops,
+                       V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
+       v4l2_ctrl_new_std(&state->hdl, &cs5345_ctrl_ops,
+                       V4L2_CID_AUDIO_VOLUME, -24, 24, 1, 0);
+       sd->ctrl_handler = &state->hdl;
+       if (state->hdl.error) {
+               int err = state->hdl.error;
+
+               v4l2_ctrl_handler_free(&state->hdl);
+               kfree(state);
+               return err;
+       }
+       /* set volume/mute */
+       v4l2_ctrl_handler_setup(&state->hdl);
+
        cs5345_write(sd, 0x02, 0x00);
        cs5345_write(sd, 0x04, 0x01);
        cs5345_write(sd, 0x09, 0x01);
@@ -194,9 +223,11 @@ static int cs5345_probe(struct i2c_client *client,
 static int cs5345_remove(struct i2c_client *client)
 {
        struct v4l2_subdev *sd = i2c_get_clientdata(client);
+       struct cs5345_state *state = to_state(sd);
 
        v4l2_device_unregister_subdev(sd);
-       kfree(sd);
+       v4l2_ctrl_handler_free(&state->hdl);
+       kfree(state);
        return 0;
 }