Re: [PATCH v14 18/18] media: i2c: ds90ub953: Support non-sync mode

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On 16/06/2023 17:47, Andy Shevchenko wrote:
On Fri, Jun 16, 2023 at 04:59:22PM +0300, Tomi Valkeinen wrote:
Add support for FPD-Link non-sync mode with external clock. The only
thing that needs to be added is the calculation for the clkout.

...

+	switch (priv->mode) {
+	case UB953_MODE_SYNC:
+		if (priv->hw_data->is_ub971)
+			return priv->plat_data->bc_rate * 160ull;
+		else
+			return priv->plat_data->bc_rate / 2 * 160ull;

Redundant 'else'.

True, but I like the symmetry in:

if (foo)
	return 123;
else
	return 321;

Do I understand correctly you don't want to fallthrough because it will give
±160 in the rate (depending if it's even or odd)?

Sorry, can you clarify? Fallthrough to what?

+	case UB953_MODE_NONSYNC_EXT:
+		/* CLKIN_DIV = 1 always */
+		return clk_get_rate(priv->clkin) * 80ull;
+
+	default:
  		/* Not supported */
  		return 0;
  	}





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