@@ -34,6 +34,7 @@
#include <linux/videodev2.h>
#include <media/v4l2-device.h>
#include <media/v4l2-chip-ident.h>
+#include <media/v4l2-ctrls.h>
#include <media/v4l2-i2c-drv.h>
MODULE_DESCRIPTION("wm8775 driver");
@@ -52,8 +53,9 @@ enum {
struct wm8775_state {
struct v4l2_subdev sd;
+ struct v4l2_ctrl_handler hdl;
+ struct v4l2_ctrl *mute;
u8 input; /* Last selected input (0-0xf) */
- u8 muted;
};
static inline struct wm8775_state *to_state(struct v4l2_subdev *sd)
@@ -61,6 +63,11 @@ static inline struct wm8775_state *to_state(struct v4l2_subdev *sd)
return container_of(sd, struct wm8775_state, sd);
}
+static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
+{
+ return &container_of(ctrl->handler, struct wm8775_state, hdl)->sd;
+}
+
static int wm8775_write(struct v4l2_subdev *sd, int reg, u16 val)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
@@ -94,7 +101,7 @@ static int wm8775_s_routing(struct v4l2_subdev *sd,
return -EINVAL;
}
state->input = input;
- if (state->muted)
+ if (!v4l2_ctrl_g_ctrl(state->mute))
return 0;
wm8775_write(sd, R21, 0x0c0);
wm8775_write(sd, R14, 0x1d4);
@@ -103,29 +110,21 @@ static int wm8775_s_routing(struct v4l2_subdev *sd,
return 0;
}
-static int wm8775_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+static int wm8775_s_ctrl(struct v4l2_ctrl *ctrl)
{
+ struct v4l2_subdev *sd = to_sd(ctrl);
struct wm8775_state *state = to_state(sd);
- if (ctrl->id != V4L2_CID_AUDIO_MUTE)
- return -EINVAL;
- ctrl->value = state->muted;
- return 0;
-}
-
-static int wm8775_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
-{
- struct wm8775_state *state = to_state(sd);
-
- if (ctrl->id != V4L2_CID_AUDIO_MUTE)
- return -EINVAL;
- state->muted = ctrl->value;
- wm8775_write(sd, R21, 0x0c0);
- wm8775_write(sd, R14, 0x1d4);
- wm8775_write(sd, R15, 0x1d4);
- if (!state->muted)
- wm8775_write(sd, R21, 0x100 + state->input);
- return 0;
+ switch (ctrl->id) {
+ case V4L2_CID_AUDIO_MUTE:
+ wm8775_write(sd, R21, 0x0c0);
+ wm8775_write(sd, R14, 0x1d4);
+ wm8775_write(sd, R15, 0x1d4);
+ if (!ctrl->val)
+ wm8775_write(sd, R21, 0x100 + state->input);
+ return 0;
+ }
+ return -EINVAL;
}
static int wm8775_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
@@ -139,8 +138,8 @@ static int wm8775_log_status(struct v4l2_subdev *sd)
{
struct wm8775_state *state = to_state(sd);
- v4l2_info(sd, "Input: %d%s\n", state->input,
- state->muted ? " (muted)" : "");
+ v4l2_info(sd, "Input: %d\n", state->input);
+ v4l2_ctrl_handler_log_status(&state->hdl, sd->name);
return 0;
}
@@ -161,11 +160,20 @@ static int wm8775_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *fre
/* ----------------------------------------------------------------------- */
+static const struct v4l2_ctrl_ops wm8775_ctrl_ops = {
+ .s_ctrl = wm8775_s_ctrl,
+};
+
static const struct v4l2_subdev_core_ops wm8775_core_ops = {
.log_status = wm8775_log_status,
.g_chip_ident = wm8775_g_chip_ident,
- .g_ctrl = wm8775_g_ctrl,
- .s_ctrl = wm8775_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,
};
static const struct v4l2_subdev_tuner_ops wm8775_tuner_ops = {
@@ -204,13 +212,24 @@ static int wm8775_probe(struct i2c_client *client,
v4l_info(client, "chip found @ 0x%02x (%s)\n",
client->addr << 1, client->adapter->name);
- state = kmalloc(sizeof(struct wm8775_state), GFP_KERNEL);
+ state = kzalloc(sizeof(struct wm8775_state), GFP_KERNEL);
if (state == NULL)
return -ENOMEM;
sd = &state->sd;
v4l2_i2c_subdev_init(sd, client, &wm8775_ops);
state->input = 2;
- state->muted = 0;
+
+ v4l2_ctrl_handler_init(&state->hdl, 1);
+ state->mute = v4l2_ctrl_new_std(&state->hdl, &wm8775_ctrl_ops,
+ V4L2_CID_AUDIO_MUTE, 0, 1, 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;
+ }
/* Initialize wm8775 */
@@ -247,9 +266,11 @@ static int wm8775_probe(struct i2c_client *client,
static int wm8775_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct wm8775_state *state = to_state(sd);
v4l2_device_unregister_subdev(sd);
- kfree(to_state(sd));
+ v4l2_ctrl_handler_free(&state->hdl);
+ kfree(state);
return 0;
}