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V4L/DVB (13238): v4l2_subdev: rename tuner s_standby operation to core s_power

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Upcoming I2C v4l2_subdev drivers need a way to control the subdevice
power state from the core. This use case is already partially covered by
the tuner s_standby operation, but no way to explicitly come back from
the standby state is available.

Rename the tuner s_standby operation to core s_power, and fix tuner
drivers accordingly. The tuner core will call s_power(0) instead of
s_standby(). No explicit call to s_power(1) is required for tuners as
they are supposed to wake up from standby automatically.

[mchehab@redhat.com: CodingStyle fix]
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Laurent Pinchart 2009-10-05 10:48:17 -03:00 committed by Mauro Carvalho Chehab
parent 7ef68e60d9
commit 622b828ab7
13 changed files with 21 additions and 17 deletions
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2
drivers/media/video/au0828/au0828-video.c
View file

@ -830,7 +830,7 @@ static int au0828_v4l2_close(struct file *filp)
au0828_uninit_isoc(dev);
/* Save some power by putting tuner to sleep */
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_standby);
v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_power, 0);
/* When close the device, set the usb intf0 into alt0 to free
USB bandwidth */

2
drivers/media/video/cx231xx/cx231xx-video.c
View file

@ -2106,7 +2106,7 @@ static int cx231xx_v4l2_close(struct file *filp)
}
/* Save some power by putting tuner to sleep */
call_all(dev, tuner, s_standby);
call_all(dev, core, s_power, 0);
/* do this before setting alternate! */
cx231xx_uninit_isoc(dev);

2
drivers/media/video/cx23885/cx23885-core.c
View file

@ -919,7 +919,7 @@ static int cx23885_dev_setup(struct cx23885_dev *dev)
cx23885_i2c_register(&dev->i2c_bus[1]);
cx23885_i2c_register(&dev->i2c_bus[2]);
cx23885_card_setup(dev);
call_all(dev, tuner, s_standby);
call_all(dev, core, s_power, 0);
cx23885_ir_init(dev);
if (cx23885_boards[dev->board].porta == CX23885_ANALOG_VIDEO) {

2
drivers/media/video/cx23885/cx23885-dvb.c
View file

@ -920,7 +920,7 @@ static int dvb_register(struct cx23885_tsport *port)
fe0->dvb.frontend->callback = cx23885_tuner_callback;
/* Put the analog decoder in standby to keep it quiet */
call_all(dev, tuner, s_standby);
call_all(dev, core, s_power, 0);
if (fe0->dvb.frontend->ops.analog_ops.standby)
fe0->dvb.frontend->ops.analog_ops.standby(fe0->dvb.frontend);

2
drivers/media/video/cx88/cx88-cards.c
View file

@ -3267,7 +3267,7 @@ static void cx88_card_setup(struct cx88_core *core)
ctl.fname);
call_all(core, tuner, s_config, &xc2028_cfg);
}
call_all(core, tuner, s_standby);
call_all(core, core, s_power, 0);
}
/* ------------------------------------------------------------------ */

2
drivers/media/video/cx88/cx88-dvb.c
View file

@ -1170,7 +1170,7 @@ static int dvb_register(struct cx8802_dev *dev)
fe1->dvb.frontend->ops.ts_bus_ctrl = cx88_dvb_bus_ctrl;
/* Put the analog decoder in standby to keep it quiet */
call_all(core, tuner, s_standby);
call_all(core, core, s_power, 0);
/* register everything */
return videobuf_dvb_register_bus(&dev->frontends, THIS_MODULE, dev,

2
drivers/media/video/cx88/cx88-video.c
View file

@ -935,7 +935,7 @@ static int video_release(struct file *file)
mutex_lock(&dev->core->lock);
if(atomic_dec_and_test(&dev->core->users))
call_all(dev->core, tuner, s_standby);
call_all(dev->core, core, s_power, 0);
mutex_unlock(&dev->core->lock);
return 0;

2
drivers/media/video/em28xx/em28xx-cards.c
View file

@ -2658,7 +2658,7 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
em28xx_init_extension(dev);
/* Save some power by putting tuner to sleep */
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_standby);
v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_power, 0);
return 0;

2
drivers/media/video/em28xx/em28xx-video.c
View file

@ -2225,7 +2225,7 @@ static int em28xx_v4l2_close(struct file *filp)
}
/* Save some power by putting tuner to sleep */
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_standby);
v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_power, 0);
/* do this before setting alternate! */
em28xx_uninit_isoc(dev);

2
drivers/media/video/saa7134/saa7134-core.c
View file

@ -1032,7 +1032,7 @@ static int __devinit saa7134_initdev(struct pci_dev *pci_dev,
saa7134_irq_video_signalchange(dev);
if (TUNER_ABSENT != dev->tuner_type)
saa_call_all(dev, tuner, s_standby);
saa_call_all(dev, core, s_power, 0);
/* register v4l devices */
if (saa7134_no_overlay > 0)

2
drivers/media/video/saa7134/saa7134-video.c
View file

@ -1499,7 +1499,7 @@ static int video_release(struct file *file)
saa_andorb(SAA7134_OFMT_DATA_A, 0x1f, 0);
saa_andorb(SAA7134_OFMT_DATA_B, 0x1f, 0);
saa_call_all(dev, tuner, s_standby);
saa_call_all(dev, core, s_power, 0);
if (fh->radio)
saa_call_all(dev, core, ioctl, RDS_CMD_CLOSE, &cmd);

9
drivers/media/video/tuner-core.c
View file

@ -752,14 +752,17 @@ static int tuner_s_radio(struct v4l2_subdev *sd)
return 0;
}
static int tuner_s_standby(struct v4l2_subdev *sd)
static int tuner_s_power(struct v4l2_subdev *sd, int on)
{
struct tuner *t = to_tuner(sd);
struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops;
if (on)
return 0;
tuner_dbg("Putting tuner to sleep\n");
if (check_mode(t, "s_standby") == -EINVAL)
if (check_mode(t, "s_power") == -EINVAL)
return 0;
t->mode = T_STANDBY;
if (analog_ops->standby)
@ -961,6 +964,7 @@ static int tuner_command(struct i2c_client *client, unsigned cmd, void *arg)
static const struct v4l2_subdev_core_ops tuner_core_ops = {
.log_status = tuner_log_status,
.s_std = tuner_s_std,
.s_power = tuner_s_power,
};
static const struct v4l2_subdev_tuner_ops tuner_tuner_ops = {
@ -971,7 +975,6 @@ static const struct v4l2_subdev_tuner_ops tuner_tuner_ops = {
.g_frequency = tuner_g_frequency,
.s_type_addr = tuner_s_type_addr,
.s_config = tuner_s_config,
.s_standby = tuner_s_standby,
};
static const struct v4l2_subdev_ops tuner_ops = {

7
include/media/v4l2-subdev.h
View file

@ -106,6 +106,9 @@ struct v4l2_decode_vbi_line {
s_gpio: set GPIO pins. Very simple right now, might need to be extended with
a direction argument if needed.
s_power: puts subdevice in power saving mode (on == 0) or normal operation
mode (on == 1).
*/
struct v4l2_subdev_core_ops {
int (*g_chip_ident)(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip);
@ -128,6 +131,7 @@ struct v4l2_subdev_core_ops {
int (*g_register)(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg);
int (*s_register)(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg);
#endif
int (*s_power)(struct v4l2_subdev *sd, int on);
};
/* s_mode: switch the tuner to a specific tuner mode. Replacement of s_radio.
@ -137,8 +141,6 @@ struct v4l2_subdev_core_ops {
s_type_addr: sets tuner type and its I2C addr.
s_config: sets tda9887 specific stuff, like port1, port2 and qss
s_standby: puts tuner on powersaving state, disabling it, except for i2c.
*/
struct v4l2_subdev_tuner_ops {
int (*s_mode)(struct v4l2_subdev *sd, enum v4l2_tuner_type);
@ -151,7 +153,6 @@ struct v4l2_subdev_tuner_ops {
int (*s_modulator)(struct v4l2_subdev *sd, struct v4l2_modulator *vm);
int (*s_type_addr)(struct v4l2_subdev *sd, struct tuner_setup *type);
int (*s_config)(struct v4l2_subdev *sd, const struct v4l2_priv_tun_config *config);
int (*s_standby)(struct v4l2_subdev *sd);
};
/* s_clock_freq: set the frequency (in Hz) of the audio clock output.