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V4L/DVB: wm8739: convert to the new control framework
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil
Mauro Carvalho Chehab
parent
251190cffa
commit
f687d19d22
@ -27,11 +27,11 @@
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#include <linux/ioctl.h>
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#include <asm/uaccess.h>
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#include <linux/i2c.h>
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#include <linux/i2c-id.h>
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#include <linux/videodev2.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-chip-ident.h>
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#include <media/v4l2-i2c-drv.h>
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#include <media/v4l2-ctrls.h>
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MODULE_DESCRIPTION("wm8739 driver");
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MODULE_AUTHOR("T. Adachi, Hans Verkuil");
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@ -54,12 +54,14 @@ enum {
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struct wm8739_state {
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struct v4l2_subdev sd;
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struct v4l2_ctrl_handler hdl;
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struct {
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/* audio cluster */
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struct v4l2_ctrl *volume;
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struct v4l2_ctrl *mute;
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struct v4l2_ctrl *balance;
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};
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u32 clock_freq;
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u8 muted;
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u16 volume;
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u16 balance;
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u8 vol_l; /* +12dB to -34.5dB 1.5dB step (5bit) def:0dB */
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u8 vol_r; /* +12dB to -34.5dB 1.5dB step (5bit) def:0dB */
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};
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static inline struct wm8739_state *to_state(struct v4l2_subdev *sd)
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@ -67,6 +69,11 @@ static inline struct wm8739_state *to_state(struct v4l2_subdev *sd)
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return container_of(sd, struct wm8739_state, sd);
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}
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static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
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{
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return &container_of(ctrl->handler, struct wm8739_state, hdl)->sd;
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}
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/* ------------------------------------------------------------------------ */
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static int wm8739_write(struct v4l2_subdev *sd, int reg, u16 val)
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@ -89,58 +96,17 @@ static int wm8739_write(struct v4l2_subdev *sd, int reg, u16 val)
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return -1;
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}
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/* write regs to set audio volume etc */
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static void wm8739_set_audio(struct v4l2_subdev *sd)
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{
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struct wm8739_state *state = to_state(sd);
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u16 mute = state->muted ? 0x80 : 0;
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/* Volume setting: bits 0-4, 0x1f = 12 dB, 0x00 = -34.5 dB
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* Default setting: 0x17 = 0 dB
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*/
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wm8739_write(sd, R0, (state->vol_l & 0x1f) | mute);
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wm8739_write(sd, R1, (state->vol_r & 0x1f) | mute);
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}
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static int wm8739_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
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{
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struct wm8739_state *state = to_state(sd);
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switch (ctrl->id) {
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case V4L2_CID_AUDIO_MUTE:
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ctrl->value = state->muted;
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break;
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case V4L2_CID_AUDIO_VOLUME:
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ctrl->value = state->volume;
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break;
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case V4L2_CID_AUDIO_BALANCE:
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ctrl->value = state->balance;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static int wm8739_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
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static int wm8739_s_ctrl(struct v4l2_ctrl *ctrl)
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{
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struct v4l2_subdev *sd = to_sd(ctrl);
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struct wm8739_state *state = to_state(sd);
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unsigned int work_l, work_r;
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u8 vol_l; /* +12dB to -34.5dB 1.5dB step (5bit) def:0dB */
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u8 vol_r; /* +12dB to -34.5dB 1.5dB step (5bit) def:0dB */
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u16 mute;
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switch (ctrl->id) {
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case V4L2_CID_AUDIO_MUTE:
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state->muted = ctrl->value;
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break;
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case V4L2_CID_AUDIO_VOLUME:
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state->volume = ctrl->value;
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break;
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case V4L2_CID_AUDIO_BALANCE:
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state->balance = ctrl->value;
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break;
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default:
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@ -148,52 +114,25 @@ static int wm8739_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
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}
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/* normalize ( 65535 to 0 -> 31 to 0 (12dB to -34.5dB) ) */
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work_l = (min(65536 - state->balance, 32768) * state->volume) / 32768;
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work_r = (min(state->balance, (u16)32768) * state->volume) / 32768;
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work_l = (min(65536 - state->balance->val, 32768) * state->volume->val) / 32768;
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work_r = (min(state->balance->val, 32768) * state->volume->val) / 32768;
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state->vol_l = (long)work_l * 31 / 65535;
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state->vol_r = (long)work_r * 31 / 65535;
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vol_l = (long)work_l * 31 / 65535;
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vol_r = (long)work_r * 31 / 65535;
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/* set audio volume etc. */
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wm8739_set_audio(sd);
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mute = state->mute->val ? 0x80 : 0;
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/* Volume setting: bits 0-4, 0x1f = 12 dB, 0x00 = -34.5 dB
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* Default setting: 0x17 = 0 dB
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*/
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wm8739_write(sd, R0, (vol_l & 0x1f) | mute);
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wm8739_write(sd, R1, (vol_r & 0x1f) | mute);
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return 0;
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}
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/* ------------------------------------------------------------------------ */
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static struct v4l2_queryctrl wm8739_qctrl[] = {
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{
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.id = V4L2_CID_AUDIO_VOLUME,
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.name = "Volume",
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.minimum = 0,
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.maximum = 65535,
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.step = 65535/100,
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.default_value = 58880,
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.flags = 0,
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.type = V4L2_CTRL_TYPE_INTEGER,
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}, {
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.id = V4L2_CID_AUDIO_MUTE,
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.name = "Mute",
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.minimum = 0,
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.maximum = 1,
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.step = 1,
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.default_value = 1,
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.flags = 0,
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.type = V4L2_CTRL_TYPE_BOOLEAN,
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}, {
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.id = V4L2_CID_AUDIO_BALANCE,
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.name = "Balance",
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.minimum = 0,
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.maximum = 65535,
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.step = 65535/100,
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.default_value = 32768,
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.flags = 0,
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.type = V4L2_CTRL_TYPE_INTEGER,
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}
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};
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/* ------------------------------------------------------------------------ */
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static int wm8739_s_clock_freq(struct v4l2_subdev *sd, u32 audiofreq)
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{
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struct wm8739_state *state = to_state(sd);
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@ -222,18 +161,6 @@ static int wm8739_s_clock_freq(struct v4l2_subdev *sd, u32 audiofreq)
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return 0;
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}
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static int wm8739_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(wm8739_qctrl); i++)
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if (qc->id && qc->id == wm8739_qctrl[i].id) {
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memcpy(qc, &wm8739_qctrl[i], sizeof(*qc));
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return 0;
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}
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return -EINVAL;
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}
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static int wm8739_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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@ -246,21 +173,26 @@ static int wm8739_log_status(struct v4l2_subdev *sd)
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struct wm8739_state *state = to_state(sd);
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v4l2_info(sd, "Frequency: %u Hz\n", state->clock_freq);
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v4l2_info(sd, "Volume L: %02x%s\n", state->vol_l & 0x1f,
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state->muted ? " (muted)" : "");
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v4l2_info(sd, "Volume R: %02x%s\n", state->vol_r & 0x1f,
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state->muted ? " (muted)" : "");
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v4l2_ctrl_handler_log_status(&state->hdl, sd->name);
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return 0;
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}
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/* ----------------------------------------------------------------------- */
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static const struct v4l2_ctrl_ops wm8739_ctrl_ops = {
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.s_ctrl = wm8739_s_ctrl,
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};
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static const struct v4l2_subdev_core_ops wm8739_core_ops = {
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.log_status = wm8739_log_status,
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.g_chip_ident = wm8739_g_chip_ident,
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.queryctrl = wm8739_queryctrl,
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.g_ctrl = wm8739_g_ctrl,
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.s_ctrl = wm8739_s_ctrl,
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.g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
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.try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
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.s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
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.g_ctrl = v4l2_subdev_g_ctrl,
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.s_ctrl = v4l2_subdev_s_ctrl,
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.queryctrl = v4l2_subdev_queryctrl,
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.querymenu = v4l2_subdev_querymenu,
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};
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static const struct v4l2_subdev_audio_ops wm8739_audio_ops = {
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@ -289,17 +221,28 @@ static int wm8739_probe(struct i2c_client *client,
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v4l_info(client, "chip found @ 0x%x (%s)\n",
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client->addr << 1, client->adapter->name);
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state = kmalloc(sizeof(struct wm8739_state), GFP_KERNEL);
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state = kzalloc(sizeof(struct wm8739_state), GFP_KERNEL);
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if (state == NULL)
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return -ENOMEM;
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sd = &state->sd;
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v4l2_i2c_subdev_init(sd, client, &wm8739_ops);
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state->vol_l = 0x17; /* 0dB */
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state->vol_r = 0x17; /* 0dB */
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state->muted = 0;
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state->balance = 32768;
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/* normalize (12dB(31) to -34.5dB(0) [0dB(23)] -> 65535 to 0) */
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state->volume = ((long)state->vol_l + 1) * 65535 / 31;
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v4l2_ctrl_handler_init(&state->hdl, 2);
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state->volume = v4l2_ctrl_new_std(&state->hdl, &wm8739_ctrl_ops,
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V4L2_CID_AUDIO_VOLUME, 0, 65535, 65535 / 100, 50736);
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state->mute = v4l2_ctrl_new_std(&state->hdl, &wm8739_ctrl_ops,
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V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
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state->balance = v4l2_ctrl_new_std(&state->hdl, &wm8739_ctrl_ops,
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V4L2_CID_AUDIO_BALANCE, 0, 65535, 65535 / 100, 32768);
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sd->ctrl_handler = &state->hdl;
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if (state->hdl.error) {
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int err = state->hdl.error;
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v4l2_ctrl_handler_free(&state->hdl);
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kfree(state);
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return err;
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}
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v4l2_ctrl_cluster(3, &state->volume);
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state->clock_freq = 48000;
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/* Initialize wm8739 */
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@ -318,15 +261,17 @@ static int wm8739_probe(struct i2c_client *client,
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/* activate */
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wm8739_write(sd, R9, 0x001);
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/* set volume/mute */
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wm8739_set_audio(sd);
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v4l2_ctrl_handler_setup(&state->hdl);
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return 0;
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}
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static int wm8739_remove(struct i2c_client *client)
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{
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struct v4l2_subdev *sd = i2c_get_clientdata(client);
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struct wm8739_state *state = to_state(sd);
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v4l2_device_unregister_subdev(sd);
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v4l2_ctrl_handler_free(&state->hdl);
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kfree(to_state(sd));
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return 0;
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}
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