diff mbox

[39/72] imx-drm: hdmi: optimize i2c write wait

Message ID 1414796095-10107-40-git-send-email-steve_longerbeam@mentor.com (mailing list archive)
State New, archived
Headers show

Commit Message

Steve Longerbeam Oct. 31, 2014, 10:54 p.m. UTC 
A wait of around 50 ~ 100 micro seconds seems to be enough to allow
I2C Master PHY done, so instead of wait 1000 usec at each time
of register check, wait 100 usec is more appropriate.

Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
---
 drivers/staging/imx-drm/imx-hdmi.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
diff mbox

Patch

diff --git a/drivers/staging/imx-drm/imx-hdmi.c b/drivers/staging/imx-drm/imx-hdmi.c
index aaec6b2..801a3eb 100644
--- a/drivers/staging/imx-drm/imx-hdmi.c
+++ b/drivers/staging/imx-drm/imx-hdmi.c
@@ -655,12 +655,12 @@  static inline void hdmi_phy_test_dout(struct imx_hdmi *hdmi,
 	hdmi_writeb(hdmi, bit, HDMI_PHY_TST2);
 }
 
-static bool hdmi_phy_wait_i2c_done(struct imx_hdmi *hdmi, int msec)
+static bool hdmi_phy_wait_i2c_done(struct imx_hdmi *hdmi, int husec)
 {
 	while ((hdmi_readb(hdmi, HDMI_IH_I2CMPHY_STAT0) & 0x3) == 0) {
-		if (msec-- == 0)
+		if (husec-- == 0)
 			return false;
-		udelay(1000);
+		udelay(100);
 	}
 	return true;
 }