As documented in [1] the runtime-pm ops are used to set the device into a fully 'workable' state. Therefore it can be used to enable or disable the irqs. [1] https://www.kernel.org/doc/html/latest/power/runtime_pm.html Signed-off-by: Marco Felsch <m.felsch@xxxxxxxxxxxxxx> --- v12: - change commit header and message -> former "media: tvp5150: add s_power callback" - drop s_power() callback and use pm_runtime callbacks instead --- drivers/media/i2c/tvp5150.c | 61 +++++++++++++++++++++++++++++++++---- 1 file changed, 55 insertions(+), 6 deletions(-) diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c index 3a8998d4610d..06ca3081f3d1 100644 --- a/drivers/media/i2c/tvp5150.c +++ b/drivers/media/i2c/tvp5150.c @@ -13,6 +13,7 @@ #include <linux/interrupt.h> #include <linux/module.h> #include <linux/of_graph.h> +#include <linux/pm_runtime.h> #include <linux/regmap.h> #include <media/v4l2-async.h> #include <media/v4l2-device.h> @@ -1356,16 +1357,51 @@ static const struct media_entity_operations tvp5150_sd_media_ops = { /**************************************************************************** I2C Command ****************************************************************************/ +static int __maybe_unused tvp5150_runtime_suspend(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct tvp5150 *decoder = to_tvp5150(sd); + + if (decoder->irq) + /* Disable lock interrupt */ + return regmap_update_bits(decoder->regmap, + TVP5150_INT_ENABLE_REG_A, + TVP5150_INT_A_LOCK, 0); + return 0; +} + +static int __maybe_unused tvp5150_runtime_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct tvp5150 *decoder = to_tvp5150(sd); + + if (decoder->irq) + /* Enable lock interrupt */ + return regmap_update_bits(decoder->regmap, + TVP5150_INT_ENABLE_REG_A, + TVP5150_INT_A_LOCK, + TVP5150_INT_A_LOCK); + return 0; +} static int tvp5150_s_stream(struct v4l2_subdev *sd, int enable) { struct tvp5150 *decoder = to_tvp5150(sd); - unsigned int mask, val = 0, int_val = 0; + unsigned int mask, val = 0; + int ret; mask = TVP5150_MISC_CTL_YCBCR_OE | TVP5150_MISC_CTL_SYNC_OE | TVP5150_MISC_CTL_CLOCK_OE; if (enable) { + ret = pm_runtime_get_sync(sd->dev); + if (ret < 0) { + pm_runtime_put_noidle(sd->dev); + return ret; + } + tvp5150_enable(sd); /* Enable outputs if decoder is locked */ @@ -1373,15 +1409,13 @@ static int tvp5150_s_stream(struct v4l2_subdev *sd, int enable) val = decoder->lock ? decoder->oe : 0; else val = decoder->oe; - int_val = TVP5150_INT_A_LOCK; + v4l2_subdev_notify_event(&decoder->sd, &tvp5150_ev_fmt); + } else { + pm_runtime_put(sd->dev); } regmap_update_bits(decoder->regmap, TVP5150_MISC_CTL, mask, val); - if (decoder->irq) - /* Enable / Disable lock interrupt */ - regmap_update_bits(decoder->regmap, TVP5150_INT_ENABLE_REG_A, - TVP5150_INT_A_LOCK, int_val); return 0; } @@ -2077,6 +2111,11 @@ static int tvp5150_probe(struct i2c_client *c) if (debug > 1) tvp5150_log_status(sd); + + pm_runtime_set_active(&c->dev); + pm_runtime_enable(&c->dev); + pm_runtime_idle(&c->dev); + return 0; err: @@ -2100,11 +2139,20 @@ static int tvp5150_remove(struct i2c_client *c) media_device_unregister_entity(&decoder->connectors[i].ent); v4l2_async_unregister_subdev(sd); v4l2_ctrl_handler_free(&decoder->hdl); + pm_runtime_disable(&c->dev); + pm_runtime_set_suspended(&c->dev); + return 0; } /* ----------------------------------------------------------------------- */ +static const struct dev_pm_ops tvp5150_pm_ops = { + SET_RUNTIME_PM_OPS(tvp5150_runtime_suspend, + tvp5150_runtime_resume, + NULL) +}; + static const struct i2c_device_id tvp5150_id[] = { { "tvp5150", 0 }, { } @@ -2123,6 +2171,7 @@ static struct i2c_driver tvp5150_driver = { .driver = { .of_match_table = of_match_ptr(tvp5150_of_match), .name = "tvp5150", + .pm = &tvp5150_pm_ops, }, .probe_new = tvp5150_probe, .remove = tvp5150_remove, -- 2.20.1
