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path: root/drivers/media/i2c/adv7180.c
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Diffstat (limited to 'drivers/media/i2c/adv7180.c')
-rw-r--r--drivers/media/i2c/adv7180.c160
1 files changed, 121 insertions, 39 deletions
diff --git a/drivers/media/i2c/adv7180.c b/drivers/media/i2c/adv7180.c
index ff57c1dcb8af..b77b0a4dbf68 100644
--- a/drivers/media/i2c/adv7180.c
+++ b/drivers/media/i2c/adv7180.c
@@ -26,8 +26,9 @@
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/of.h>
-#include <media/v4l2-ioctl.h>
#include <linux/videodev2.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-event.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
#include <linux/mutex.h>
@@ -192,8 +193,8 @@ struct adv7180_state {
struct mutex mutex; /* mutual excl. when accessing chip */
int irq;
v4l2_std_id curr_norm;
- bool autodetect;
bool powered;
+ bool streaming;
u8 input;
struct i2c_client *client;
@@ -338,12 +339,26 @@ static int adv7180_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
if (err)
return err;
- /* when we are interrupt driven we know the state */
- if (!state->autodetect || state->irq > 0)
- *std = state->curr_norm;
- else
- err = __adv7180_status(state, NULL, std);
+ if (state->streaming) {
+ err = -EBUSY;
+ goto unlock;
+ }
+
+ err = adv7180_set_video_standard(state,
+ ADV7180_STD_AD_PAL_BG_NTSC_J_SECAM);
+ if (err)
+ goto unlock;
+
+ msleep(100);
+ __adv7180_status(state, NULL, std);
+
+ err = v4l2_std_to_adv7180(state->curr_norm);
+ if (err < 0)
+ goto unlock;
+ err = adv7180_set_video_standard(state, err);
+
+unlock:
mutex_unlock(&state->mutex);
return err;
}
@@ -387,23 +402,13 @@ static int adv7180_program_std(struct adv7180_state *state)
{
int ret;
- if (state->autodetect) {
- ret = adv7180_set_video_standard(state,
- ADV7180_STD_AD_PAL_BG_NTSC_J_SECAM);
- if (ret < 0)
- return ret;
-
- __adv7180_status(state, NULL, &state->curr_norm);
- } else {
- ret = v4l2_std_to_adv7180(state->curr_norm);
- if (ret < 0)
- return ret;
-
- ret = adv7180_set_video_standard(state, ret);
- if (ret < 0)
- return ret;
- }
+ ret = v4l2_std_to_adv7180(state->curr_norm);
+ if (ret < 0)
+ return ret;
+ ret = adv7180_set_video_standard(state, ret);
+ if (ret < 0)
+ return ret;
return 0;
}
@@ -415,18 +420,12 @@ static int adv7180_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
if (ret)
return ret;
- /* all standards -> autodetect */
- if (std == V4L2_STD_ALL) {
- state->autodetect = true;
- } else {
- /* Make sure we can support this std */
- ret = v4l2_std_to_adv7180(std);
- if (ret < 0)
- goto out;
+ /* Make sure we can support this std */
+ ret = v4l2_std_to_adv7180(std);
+ if (ret < 0)
+ goto out;
- state->curr_norm = std;
- state->autodetect = false;
- }
+ state->curr_norm = std;
ret = adv7180_program_std(state);
out:
@@ -434,6 +433,15 @@ out:
return ret;
}
+static int adv7180_g_std(struct v4l2_subdev *sd, v4l2_std_id *norm)
+{
+ struct adv7180_state *state = to_state(sd);
+
+ *norm = state->curr_norm;
+
+ return 0;
+}
+
static int adv7180_set_power(struct adv7180_state *state, bool on)
{
u8 val;
@@ -717,17 +725,77 @@ static int adv7180_g_mbus_config(struct v4l2_subdev *sd,
return 0;
}
+static int adv7180_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *cropcap)
+{
+ struct adv7180_state *state = to_state(sd);
+
+ if (state->curr_norm & V4L2_STD_525_60) {
+ cropcap->pixelaspect.numerator = 11;
+ cropcap->pixelaspect.denominator = 10;
+ } else {
+ cropcap->pixelaspect.numerator = 54;
+ cropcap->pixelaspect.denominator = 59;
+ }
+
+ return 0;
+}
+
+static int adv7180_g_tvnorms(struct v4l2_subdev *sd, v4l2_std_id *norm)
+{
+ *norm = V4L2_STD_ALL;
+ return 0;
+}
+
+static int adv7180_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct adv7180_state *state = to_state(sd);
+ int ret;
+
+ /* It's always safe to stop streaming, no need to take the lock */
+ if (!enable) {
+ state->streaming = enable;
+ return 0;
+ }
+
+ /* Must wait until querystd released the lock */
+ ret = mutex_lock_interruptible(&state->mutex);
+ if (ret)
+ return ret;
+ state->streaming = enable;
+ mutex_unlock(&state->mutex);
+ return 0;
+}
+
+static int adv7180_subscribe_event(struct v4l2_subdev *sd,
+ struct v4l2_fh *fh,
+ struct v4l2_event_subscription *sub)
+{
+ switch (sub->type) {
+ case V4L2_EVENT_SOURCE_CHANGE:
+ return v4l2_src_change_event_subdev_subscribe(sd, fh, sub);
+ case V4L2_EVENT_CTRL:
+ return v4l2_ctrl_subdev_subscribe_event(sd, fh, sub);
+ default:
+ return -EINVAL;
+ }
+}
+
static const struct v4l2_subdev_video_ops adv7180_video_ops = {
.s_std = adv7180_s_std,
+ .g_std = adv7180_g_std,
.querystd = adv7180_querystd,
.g_input_status = adv7180_g_input_status,
.s_routing = adv7180_s_routing,
.g_mbus_config = adv7180_g_mbus_config,
+ .cropcap = adv7180_cropcap,
+ .g_tvnorms = adv7180_g_tvnorms,
+ .s_stream = adv7180_s_stream,
};
-
static const struct v4l2_subdev_core_ops adv7180_core_ops = {
.s_power = adv7180_s_power,
+ .subscribe_event = adv7180_subscribe_event,
+ .unsubscribe_event = v4l2_event_subdev_unsubscribe,
};
static const struct v4l2_subdev_pad_ops adv7180_pad_ops = {
@@ -752,8 +820,14 @@ static irqreturn_t adv7180_irq(int irq, void *devid)
/* clear */
adv7180_write(state, ADV7180_REG_ICR3, isr3);
- if (isr3 & ADV7180_IRQ3_AD_CHANGE && state->autodetect)
- __adv7180_status(state, NULL, &state->curr_norm);
+ if (isr3 & ADV7180_IRQ3_AD_CHANGE) {
+ static const struct v4l2_event src_ch = {
+ .type = V4L2_EVENT_SOURCE_CHANGE,
+ .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
+ };
+
+ v4l2_subdev_notify_event(&state->sd, &src_ch);
+ }
mutex_unlock(&state->mutex);
return IRQ_HANDLED;
@@ -1198,7 +1272,7 @@ static int adv7180_probe(struct i2c_client *client,
state->irq = client->irq;
mutex_init(&state->mutex);
- state->autodetect = true;
+ state->curr_norm = V4L2_STD_NTSC;
if (state->chip_info->flags & ADV7180_FLAG_RESET_POWERED)
state->powered = true;
else
@@ -1206,7 +1280,7 @@ static int adv7180_probe(struct i2c_client *client,
state->input = 0;
sd = &state->sd;
v4l2_i2c_subdev_init(sd, client, &adv7180_ops);
- sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
+ sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
ret = adv7180_init_controls(state);
if (ret)
@@ -1328,6 +1402,14 @@ static SIMPLE_DEV_PM_OPS(adv7180_pm_ops, adv7180_suspend, adv7180_resume);
#ifdef CONFIG_OF
static const struct of_device_id adv7180_of_id[] = {
{ .compatible = "adi,adv7180", },
+ { .compatible = "adi,adv7182", },
+ { .compatible = "adi,adv7280", },
+ { .compatible = "adi,adv7280-m", },
+ { .compatible = "adi,adv7281", },
+ { .compatible = "adi,adv7281-m", },
+ { .compatible = "adi,adv7281-ma", },
+ { .compatible = "adi,adv7282", },
+ { .compatible = "adi,adv7282-m", },
{ },
};
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-28 09:50:35 +0300