diff mbox series

[v4,10/24] ASoC: renesas: rz-ssi: Use readl_poll_timeout_atomic()

Message ID 20241210170953.2936724-11-claudiu.beznea.uj@bp.renesas.com (mailing list archive)
State Accepted
Commit 4bf77dfa3308b7cfda29d9c4ead1dc32f1ceefa9
Headers show
Series Add audio support for the Renesas RZ/G3S SoC | expand

Commit Message

Claudiu Beznea Dec. 10, 2024, 5:09 p.m. UTC 
From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Use readl_poll_timeout_atomic() instead of hardcoding something similar.
While at it replace dev_info() with dev_warn_ratelimited() as the
rz_ssi_set_idle() can also be called from IRQ context and if the SSI
idle is not properly set this is at least a warning for user.

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v4:
- collected tags

Changes in v3:
- s/sh/renesas in patch title

Changes in v2:
- none

 sound/soc/renesas/rz-ssi.c | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)
diff mbox series

Patch

diff --git a/sound/soc/renesas/rz-ssi.c b/sound/soc/renesas/rz-ssi.c
index 1a98f6b3e6a7..03d409d3070c 100644
--- a/sound/soc/renesas/rz-ssi.c
+++ b/sound/soc/renesas/rz-ssi.c
@@ -9,6 +9,7 @@ 
 #include <linux/clk.h>
 #include <linux/dmaengine.h>
 #include <linux/io.h>
+#include <linux/iopoll.h>
 #include <linux/module.h>
 #include <linux/pm_runtime.h>
 #include <linux/reset.h>
@@ -307,7 +308,8 @@  static int rz_ssi_clk_setup(struct rz_ssi_priv *ssi, unsigned int rate,
 
 static void rz_ssi_set_idle(struct rz_ssi_priv *ssi)
 {
-	int timeout;
+	u32 tmp;
+	int ret;
 
 	/* Disable irqs */
 	rz_ssi_reg_mask_setl(ssi, SSICR, SSICR_TUIEN | SSICR_TOIEN |
@@ -320,15 +322,9 @@  static void rz_ssi_set_idle(struct rz_ssi_priv *ssi)
 			      SSISR_RUIRQ), 0);
 
 	/* Wait for idle */
-	timeout = 100;
-	while (--timeout) {
-		if (rz_ssi_reg_readl(ssi, SSISR) & SSISR_IIRQ)
-			break;
-		udelay(1);
-	}
-
-	if (!timeout)
-		dev_info(ssi->dev, "timeout waiting for SSI idle\n");
+	ret = readl_poll_timeout_atomic(ssi->base + SSISR, tmp, (tmp & SSISR_IIRQ), 1, 100);
+	if (ret)
+		dev_warn_ratelimited(ssi->dev, "timeout waiting for SSI idle\n");
 
 	/* Hold FIFOs in reset */
 	rz_ssi_reg_mask_setl(ssi, SSIFCR, 0, SSIFCR_FIFO_RST);