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Improvements to i.MX media drivers:

Browse Source 
- Switch to RUNTIME/SYSTEM_SLEEP_PM_OPS() for better compile testing of
   the imx-mipi-csis and imx8mq-mipi-csi2 drivers
 - Improve real time behaviour of imx-mipi-csis by avoiding logging while
   holding a spin lock
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Merge tag 'tags/next-media-imx-20240825' of git://git.kernel.org/pub/scm/linux/kernel/git/pinchartl/linux.git

Improvements to i.MX media drivers:

- Switch to RUNTIME/SYSTEM_SLEEP_PM_OPS() for better compile testing of
  the imx-mipi-csis and imx8mq-mipi-csi2 drivers
- Improve real time behaviour of imx-mipi-csis by avoiding logging while
  holding a spin lock

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.linuxtv.org/project/linux-media/patch/20240824233233.GB9543@pendragon.ideasonboard.com/
This commit is contained in:
Hans Verkuil 2024-08-28 13:09:24 +02:00
commit 75c357a879
2 changed files with 19 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/media/platform/nxp/imx-mipi-csis.c
View File

@ -861,18 +861,21 @@ static void mipi_csis_log_counters(struct mipi_csis_device *csis, bool non_error
{
unsigned int num_events = non_errors ? MIPI_CSIS_NUM_EVENTS
: MIPI_CSIS_NUM_EVENTS - 8;
unsigned int counters[MIPI_CSIS_NUM_EVENTS];
unsigned long flags;
unsigned int i;
spin_lock_irqsave(&csis->slock, flags);
for (i = 0; i < num_events; ++i)
counters[i] = csis->events[i].counter;
spin_unlock_irqrestore(&csis->slock, flags);
for (i = 0; i < num_events; ++i) {
if (csis->events[i].counter > 0 || csis->debug.enable)
if (counters[i] > 0 || csis->debug.enable)
dev_info(csis->dev, "%s events: %d\n",
csis->events[i].name,
csis->events[i].counter);
counters[i]);
}
spin_unlock_irqrestore(&csis->slock, flags);
}
static int mipi_csis_dump_regs(struct mipi_csis_device *csis)
@ -1344,7 +1347,7 @@ static int mipi_csis_async_register(struct mipi_csis_device *csis)
* Suspend/resume
*/
static int __maybe_unused mipi_csis_runtime_suspend(struct device *dev)
static int mipi_csis_runtime_suspend(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct mipi_csis_device *csis = sd_to_mipi_csis_device(sd);
@ -1359,7 +1362,7 @@ static int __maybe_unused mipi_csis_runtime_suspend(struct device *dev)
return 0;
}
static int __maybe_unused mipi_csis_runtime_resume(struct device *dev)
static int mipi_csis_runtime_resume(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct mipi_csis_device *csis = sd_to_mipi_csis_device(sd);
@ -1379,8 +1382,8 @@ static int __maybe_unused mipi_csis_runtime_resume(struct device *dev)
}
static const struct dev_pm_ops mipi_csis_pm_ops = {
SET_RUNTIME_PM_OPS(mipi_csis_runtime_suspend, mipi_csis_runtime_resume,
NULL)
RUNTIME_PM_OPS(mipi_csis_runtime_suspend, mipi_csis_runtime_resume,
NULL)
};
/* -----------------------------------------------------------------------------
@ -1571,7 +1574,7 @@ static struct platform_driver mipi_csis_driver = {
.driver = {
.of_match_table = mipi_csis_of_match,
.name = CSIS_DRIVER_NAME,
.pm = &mipi_csis_pm_ops,
.pm = pm_ptr(&mipi_csis_pm_ops),
},
};

17
drivers/media/platform/nxp/imx8mq-mipi-csi2.c
View File

@ -693,7 +693,7 @@ static int imx8mq_mipi_csi_pm_resume(struct device *dev)
return ret ? -EAGAIN : 0;
}
static int __maybe_unused imx8mq_mipi_csi_suspend(struct device *dev)
static int imx8mq_mipi_csi_suspend(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct csi_state *state = mipi_sd_to_csi2_state(sd);
@ -705,7 +705,7 @@ static int __maybe_unused imx8mq_mipi_csi_suspend(struct device *dev)
return 0;
}
static int __maybe_unused imx8mq_mipi_csi_resume(struct device *dev)
static int imx8mq_mipi_csi_resume(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct csi_state *state = mipi_sd_to_csi2_state(sd);
@ -716,7 +716,7 @@ static int __maybe_unused imx8mq_mipi_csi_resume(struct device *dev)
return imx8mq_mipi_csi_pm_resume(dev);
}
static int __maybe_unused imx8mq_mipi_csi_runtime_suspend(struct device *dev)
static int imx8mq_mipi_csi_runtime_suspend(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct csi_state *state = mipi_sd_to_csi2_state(sd);
@ -731,7 +731,7 @@ static int __maybe_unused imx8mq_mipi_csi_runtime_suspend(struct device *dev)
return ret;
}
static int __maybe_unused imx8mq_mipi_csi_runtime_resume(struct device *dev)
static int imx8mq_mipi_csi_runtime_resume(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct csi_state *state = mipi_sd_to_csi2_state(sd);
@ -747,10 +747,9 @@ static int __maybe_unused imx8mq_mipi_csi_runtime_resume(struct device *dev)
}
static const struct dev_pm_ops imx8mq_mipi_csi_pm_ops = {
SET_RUNTIME_PM_OPS(imx8mq_mipi_csi_runtime_suspend,
imx8mq_mipi_csi_runtime_resume,
NULL)
SET_SYSTEM_SLEEP_PM_OPS(imx8mq_mipi_csi_suspend, imx8mq_mipi_csi_resume)
RUNTIME_PM_OPS(imx8mq_mipi_csi_runtime_suspend,
imx8mq_mipi_csi_runtime_resume, NULL)
SYSTEM_SLEEP_PM_OPS(imx8mq_mipi_csi_suspend, imx8mq_mipi_csi_resume)
};
/* -----------------------------------------------------------------------------
@ -958,7 +957,7 @@ static struct platform_driver imx8mq_mipi_csi_driver = {
.driver = {
.of_match_table = imx8mq_mipi_csi_of_match,
.name = MIPI_CSI2_DRIVER_NAME,
.pm = &imx8mq_mipi_csi_pm_ops,
.pm = pm_ptr(&imx8mq_mipi_csi_pm_ops),
},
};