Re: [PATCH v3 2/2] serial: 8250_pci: replace switch-case by formula for Intel MID

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On 03/13/2015 12:51 PM, Andy Shevchenko wrote:
> This patch replaces a switch-case by a formula using rational best
> approximation that does necessary calculations for intel_mid_set_termios().
> 
> Below is a list of the calculations done for all defined baud rates. Each line
> in a format: 1) nominator, 2) denominator, 3) prescaler, 4) Fuart, 5) port UART
> clock, 6) list of baud rates with DLAB values.
> 
> 24       25       12 48000000   64000000   4000000(1)
> 49       50       14 49000000   56000000   3500000(1)
> 4        5        16 40000000   40000000   2500000(1)
> 16       25       16 32000000   32000000   500000(4),1000000(2),2000000(1)
> 24       25       16 48000000   48000000   1500000(2),3000000(1)
> 2304     3125     16 36864000   36864000   576000(4),1152000(2)
> 8192     15625    16 26214400   26214400   50(32768),200(8192)
> 9216     15625    16 29491200   29491200   1800(1024),57600(32),115200(16),
> 					230400(8),460800(4),921600(2),1843200(1)
> 12288    15625    16 39321600   39321600   75(32768),150(16384),300(8192),
> 					600(4096),1200(2048),2400(1024),4800(512),
> 					9600(256),19200(128),38400(64)
> 45056    78125    16 28835840   28835840   110(16384)
> 274432   390625   16 35127296   35127296   134(16384)

Reviewed-by: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx>


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