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media: i2c: max9286: Print power-up GMSL link configuration

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The power-up GMSL link configuration is controlled by the HIM and BWS
pins, whose state is reflected in register 0x1c. Print the detected
power-up config in a debug message to help debugging.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Laurent Pinchart 2022-01-02 00:26:37 +01:00 committed by Mauro Carvalho Chehab
parent 40f7545798
commit defcedfb3e
1 changed files with 13 additions and 10 deletions
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23
drivers/media/i2c/max9286.c
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@ -1156,6 +1156,7 @@ static int max9286_setup(struct max9286_priv *priv)
(2 << 6) | (1 << 4) | (0 << 2) | (3 << 0), /* 210x */
(3 << 6) | (2 << 4) | (1 << 2) | (0 << 0), /* 3210 */
};
int cfg;
/*
* Set the I2C bus speed.
@ -1177,21 +1178,23 @@ static int max9286_setup(struct max9286_priv *priv)
max9286_set_video_format(priv, &max9286_default_format);
max9286_set_fsync_period(priv);
cfg = max9286_read(priv, 0x1c);
if (cfg < 0)
return cfg;
dev_dbg(&priv->client->dev, "power-up config: %s immunity, %u-bit bus\n",
cfg & MAX9286_HIGHIMM(0) ? "high" : "legacy",
cfg & MAX9286_BWS ? 32 : cfg & MAX9286_HIBW ? 27 : 24);
if (priv->bus_width) {
int val;
val = max9286_read(priv, 0x1c);
if (val < 0)
return val;
val &= ~(MAX9286_HIBW | MAX9286_BWS);
cfg &= ~(MAX9286_HIBW | MAX9286_BWS);
if (priv->bus_width == 27)
val |= MAX9286_HIBW;
cfg |= MAX9286_HIBW;
else if (priv->bus_width == 32)
val |= MAX9286_BWS;
cfg |= MAX9286_BWS;
max9286_write(priv, 0x1c, val);
max9286_write(priv, 0x1c, cfg);
}
/*