Re: [WM1811] How do I add custmize default register in WM1811 - linaro-kernel

11 Jul 2013


      Hi JS Park,
I just wrote the following code, it's compile tested only but ought to
work I think.  Should appear in v3.12 (or a fixed version anyway) -
please let me know if it works for you.
Thanks,
Mark
On Mon, Jul 08, 2013 at 01:29:30AM +0000, JS Park wrote:
...
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<p>Dear Mark Brown,</p>
<p>&nbsp;</p>
<p>Hi Mark. How have you been.</p>
<p>I am JS Park in Samsung System Audio Engineer.<br /></p>
<p>I have question about regimap register function.</p>
<p>&nbsp;</p>
<p>We can set default register&nbsp;to call regmap_register_pattch function.</p>
<p>but, see the below source code, It&nbsp;is possible just one time.</p>
<p>&nbsp;</p>
<p>If need change defualt register, like as wm1811_reva_patch, I have to modify wm8994-core.c</p>
<p>Is it imposible not to change wm8994 driver source?</p>
<p>I just want to add custmize default regiister setting for Samsung specify register&nbsp;regarding earphone detection.</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p><font face="Courier New">@drivers/base/regmap/regmap.c</font></p><!--SP:aitdark.park-->
<p><font face="Courier New">int regmap_register_patch(struct regmap *map, const struct reg_default *regs,<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; int num_regs)<br />
{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; int i, ret;<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; bool bypass;<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /* If needed the implementation can be extended to support this */<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (map-&gt;patch)<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return -EBUSY;<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; mutex_lock(&amp;map-&gt;lock);<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; bypass = map-&gt;cache_bypass;<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br />
...</font></p>
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<p><font face="Courier New"></font>&nbsp;</p>
<p><font face="Courier New">Thanks.</font></p>
<p><font face="Courier New"></font></p><!--aitdark.park:EP-->
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