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path: root/drivers/media/radio/radio-tea5764.c
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Diffstat (limited to 'drivers/media/radio/radio-tea5764.c')
-rw-r--r--drivers/media/radio/radio-tea5764.c190
1 files changed, 71 insertions, 119 deletions
diff --git a/drivers/media/radio/radio-tea5764.c b/drivers/media/radio/radio-tea5764.c
index 38d563d62595..036e2f54f4db 100644
--- a/drivers/media/radio/radio-tea5764.c
+++ b/drivers/media/radio/radio-tea5764.c
@@ -39,6 +39,9 @@
#include <linux/i2c.h> /* I2C */
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-event.h>
#define DRIVER_VERSION "0.0.2"
@@ -57,8 +60,8 @@
/* Frequency limits in MHz -- these are European values. For Japanese
devices, that would be 76000 and 91000. */
-#define FREQ_MIN 87500
-#define FREQ_MAX 108000
+#define FREQ_MIN 87500U
+#define FREQ_MAX 108000U
#define FREQ_MUL 16
/* TEA5764 registers */
@@ -138,8 +141,10 @@ static int radio_nr = -1;
static int use_xtal = RADIO_TEA5764_XTAL;
struct tea5764_device {
+ struct v4l2_device v4l2_dev;
+ struct v4l2_ctrl_handler ctrl_handler;
struct i2c_client *i2c_client;
- struct video_device *videodev;
+ struct video_device vdev;
struct tea5764_regs regs;
struct mutex mutex;
};
@@ -187,18 +192,6 @@ static int tea5764_i2c_write(struct tea5764_device *radio)
return 0;
}
-/* V4L2 code related */
-static struct v4l2_queryctrl radio_qctrl[] = {
- {
- .id = V4L2_CID_AUDIO_MUTE,
- .name = "Mute",
- .minimum = 0,
- .maximum = 1,
- .default_value = 1,
- .type = V4L2_CTRL_TYPE_BOOLEAN,
- }
-};
-
static void tea5764_power_up(struct tea5764_device *radio)
{
struct tea5764_regs *r = &radio->regs;
@@ -291,23 +284,19 @@ static void tea5764_mute(struct tea5764_device *radio, int on)
tea5764_i2c_write(radio);
}
-static int tea5764_is_muted(struct tea5764_device *radio)
-{
- return radio->regs.tnctrl & TEA5764_TNCTRL_MU;
-}
-
/* V4L2 vidioc */
static int vidioc_querycap(struct file *file, void *priv,
struct v4l2_capability *v)
{
struct tea5764_device *radio = video_drvdata(file);
- struct video_device *dev = radio->videodev;
+ struct video_device *dev = &radio->vdev;
strlcpy(v->driver, dev->dev.driver->name, sizeof(v->driver));
strlcpy(v->card, dev->name, sizeof(v->card));
snprintf(v->bus_info, sizeof(v->bus_info),
"I2C:%s", dev_name(&dev->dev));
- v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
+ v->device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
+ v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS;
return 0;
}
@@ -320,8 +309,7 @@ static int vidioc_g_tuner(struct file *file, void *priv,
if (v->index > 0)
return -EINVAL;
- memset(v, 0, sizeof(*v));
- strcpy(v->name, "FM");
+ strlcpy(v->name, "FM", sizeof(v->name));
v->type = V4L2_TUNER_RADIO;
tea5764_i2c_read(radio);
v->rangelow = FREQ_MIN * FREQ_MUL;
@@ -354,19 +342,23 @@ static int vidioc_s_frequency(struct file *file, void *priv,
const struct v4l2_frequency *f)
{
struct tea5764_device *radio = video_drvdata(file);
+ unsigned freq = f->frequency;
if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)
return -EINVAL;
- if (f->frequency == 0) {
+ if (freq == 0) {
/* We special case this as a power down control. */
tea5764_power_down(radio);
- }
- if (f->frequency < (FREQ_MIN * FREQ_MUL))
- return -EINVAL;
- if (f->frequency > (FREQ_MAX * FREQ_MUL))
+ /* Yes, that's what is returned in this case. This
+ whole special case is non-compliant and should really
+ be replaced with something better, but changing this
+ might well break code that depends on this behavior.
+ So we keep it as-is. */
return -EINVAL;
+ }
+ clamp(freq, FREQ_MIN * FREQ_MUL, FREQ_MAX * FREQ_MUL);
tea5764_power_up(radio);
- tea5764_tune(radio, (f->frequency * 125) / 2);
+ tea5764_tune(radio, (freq * 125) / 2);
return 0;
}
@@ -379,7 +371,6 @@ static int vidioc_g_frequency(struct file *file, void *priv,
if (f->tuner != 0)
return -EINVAL;
tea5764_i2c_read(radio);
- memset(f, 0, sizeof(*f));
f->type = V4L2_TUNER_RADIO;
if (r->tnctrl & TEA5764_TNCTRL_PUPD0)
f->frequency = (tea5764_get_freq(radio) * 2) / 125;
@@ -389,83 +380,29 @@ static int vidioc_g_frequency(struct file *file, void *priv,
return 0;
}
-static int vidioc_queryctrl(struct file *file, void *priv,
- struct v4l2_queryctrl *qc)
+static int tea5764_s_ctrl(struct v4l2_ctrl *ctrl)
{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
- if (qc->id && qc->id == radio_qctrl[i].id) {
- memcpy(qc, &(radio_qctrl[i]), sizeof(*qc));
- return 0;
- }
- }
- return -EINVAL;
-}
-
-static int vidioc_g_ctrl(struct file *file, void *priv,
- struct v4l2_control *ctrl)
-{
- struct tea5764_device *radio = video_drvdata(file);
-
- switch (ctrl->id) {
- case V4L2_CID_AUDIO_MUTE:
- tea5764_i2c_read(radio);
- ctrl->value = tea5764_is_muted(radio) ? 1 : 0;
- return 0;
- }
- return -EINVAL;
-}
-
-static int vidioc_s_ctrl(struct file *file, void *priv,
- struct v4l2_control *ctrl)
-{
- struct tea5764_device *radio = video_drvdata(file);
+ struct tea5764_device *radio =
+ container_of(ctrl->handler, struct tea5764_device, ctrl_handler);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
- tea5764_mute(radio, ctrl->value);
+ tea5764_mute(radio, ctrl->val);
return 0;
}
return -EINVAL;
}
-static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
-{
- *i = 0;
- return 0;
-}
-
-static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
-{
- if (i != 0)
- return -EINVAL;
- return 0;
-}
-
-static int vidioc_g_audio(struct file *file, void *priv,
- struct v4l2_audio *a)
-{
- if (a->index > 1)
- return -EINVAL;
-
- strcpy(a->name, "Radio");
- a->capability = V4L2_AUDCAP_STEREO;
- return 0;
-}
-
-static int vidioc_s_audio(struct file *file, void *priv,
- const struct v4l2_audio *a)
-{
- if (a->index != 0)
- return -EINVAL;
-
- return 0;
-}
+static const struct v4l2_ctrl_ops tea5764_ctrl_ops = {
+ .s_ctrl = tea5764_s_ctrl,
+};
/* File system interface */
static const struct v4l2_file_operations tea5764_fops = {
.owner = THIS_MODULE,
+ .open = v4l2_fh_open,
+ .release = v4l2_fh_release,
+ .poll = v4l2_ctrl_poll,
.unlocked_ioctl = video_ioctl2,
};
@@ -473,15 +410,11 @@ static const struct v4l2_ioctl_ops tea5764_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
.vidioc_g_tuner = vidioc_g_tuner,
.vidioc_s_tuner = vidioc_s_tuner,
- .vidioc_g_audio = vidioc_g_audio,
- .vidioc_s_audio = vidioc_s_audio,
- .vidioc_g_input = vidioc_g_input,
- .vidioc_s_input = vidioc_s_input,
.vidioc_g_frequency = vidioc_g_frequency,
.vidioc_s_frequency = vidioc_s_frequency,
- .vidioc_queryctrl = vidioc_queryctrl,
- .vidioc_g_ctrl = vidioc_g_ctrl,
- .vidioc_s_ctrl = vidioc_s_ctrl,
+ .vidioc_log_status = v4l2_ctrl_log_status,
+ .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
/* V4L2 interface */
@@ -489,7 +422,7 @@ static struct video_device tea5764_radio_template = {
.name = "TEA5764 FM-Radio",
.fops = &tea5764_fops,
.ioctl_ops = &tea5764_ioctl_ops,
- .release = video_device_release,
+ .release = video_device_release_empty,
};
/* I2C probe: check if the device exists and register with v4l if it is */
@@ -497,6 +430,8 @@ static int tea5764_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct tea5764_device *radio;
+ struct v4l2_device *v4l2_dev;
+ struct v4l2_ctrl_handler *hdl;
struct tea5764_regs *r;
int ret;
@@ -505,31 +440,45 @@ static int tea5764_i2c_probe(struct i2c_client *client,
if (!radio)
return -ENOMEM;
+ v4l2_dev = &radio->v4l2_dev;
+ ret = v4l2_device_register(&client->dev, v4l2_dev);
+ if (ret < 0) {
+ v4l2_err(v4l2_dev, "could not register v4l2_device\n");
+ goto errfr;
+ }
+
+ hdl = &radio->ctrl_handler;
+ v4l2_ctrl_handler_init(hdl, 1);
+ v4l2_ctrl_new_std(hdl, &tea5764_ctrl_ops,
+ V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
+ v4l2_dev->ctrl_handler = hdl;
+ if (hdl->error) {
+ ret = hdl->error;
+ v4l2_err(v4l2_dev, "Could not register controls\n");
+ goto errunreg;
+ }
+
mutex_init(&radio->mutex);
radio->i2c_client = client;
ret = tea5764_i2c_read(radio);
if (ret)
- goto errfr;
+ goto errunreg;
r = &radio->regs;
PDEBUG("chipid = %04X, manid = %04X", r->chipid, r->manid);
if (r->chipid != TEA5764_CHIPID ||
(r->manid & 0x0fff) != TEA5764_MANID) {
PWARN("This chip is not a TEA5764!");
ret = -EINVAL;
- goto errfr;
+ goto errunreg;
}
- radio->videodev = video_device_alloc();
- if (!(radio->videodev)) {
- ret = -ENOMEM;
- goto errfr;
- }
- memcpy(radio->videodev, &tea5764_radio_template,
- sizeof(tea5764_radio_template));
+ radio->vdev = tea5764_radio_template;
i2c_set_clientdata(client, radio);
- video_set_drvdata(radio->videodev, radio);
- radio->videodev->lock = &radio->mutex;
+ video_set_drvdata(&radio->vdev, radio);
+ radio->vdev.lock = &radio->mutex;
+ radio->vdev.v4l2_dev = v4l2_dev;
+ set_bit(V4L2_FL_USE_FH_PRIO, &radio->vdev.flags);
/* initialize and power off the chip */
tea5764_i2c_read(radio);
@@ -537,16 +486,17 @@ static int tea5764_i2c_probe(struct i2c_client *client,
tea5764_mute(radio, 1);
tea5764_power_down(radio);
- ret = video_register_device(radio->videodev, VFL_TYPE_RADIO, radio_nr);
+ ret = video_register_device(&radio->vdev, VFL_TYPE_RADIO, radio_nr);
if (ret < 0) {
PWARN("Could not register video device!");
- goto errrel;
+ goto errunreg;
}
PINFO("registered.");
return 0;
-errrel:
- video_device_release(radio->videodev);
+errunreg:
+ v4l2_ctrl_handler_free(hdl);
+ v4l2_device_unregister(v4l2_dev);
errfr:
kfree(radio);
return ret;
@@ -559,7 +509,9 @@ static int tea5764_i2c_remove(struct i2c_client *client)
PDEBUG("remove");
if (radio) {
tea5764_power_down(radio);
- video_unregister_device(radio->videodev);
+ video_unregister_device(&radio->vdev);
+ v4l2_ctrl_handler_free(&radio->ctrl_handler);
+ v4l2_device_unregister(&radio->v4l2_dev);
kfree(radio);
}
return 0;