[PATCH 1/5] i3c: master: svc: enable hotjoin default

Frank Li
2023-10-16T15:47:01Z

Hotjoin require clock running and enable SLVSTART irq.
Add module parameter 'hotjoin' to disable hotjoin and enable runtime_pm to
save power.

Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
drivers/i3c/master/svc-i3c-master.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/i3c/master/svc-i3c-master.c b/drivers/i3c/master/svc-i3c-master.c
index 18bc277edc8a..f0d99b029e5f 100644
--- a/drivers/i3c/master/svc-i3c-master.c
+++ b/drivers/i3c/master/svc-i3c-master.c
@@ -128,6 +128,9 @@
/* This parameter depends on the implementation and may be tuned */
#define SVC_I3C_FIFO_SIZE 16

+static bool hotjoin = true;
+module_param(hotjoin, bool, S_IRUGO | S_IWUSR);
+
struct svc_i3c_cmd {
u8 addr;
bool rnw;
@@ -1623,8 +1626,12 @@ static int svc_i3c_master_probe(struct platform_device *pdev)
if (ret)
goto rpm_disable;

- pm_runtime_mark_last_busy(&pdev->dev);
- pm_runtime_put_autosuspend(&pdev->dev);
+ if (hotjoin) {
+ svc_i3c_master_enable_interrupts(master, SVC_I3C_MINT_SLVSTART);
+ } else {
+ pm_runtime_mark_last_busy(&pdev->dev);
+ pm_runtime_put_autosuspend(&pdev->dev);
+ }

return 0;

--
2.34.1