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Commit 704e39bf authored by Michael Krufky's avatar Michael Krufky Committed by Mauro Carvalho Chehab
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V4L/DVB (6230): dvb-pll: add module option to force dvb-pll desc id (for debug use only) 



Add a module option to force the dvb-pll module to use an alternate dvb-pll
description without having to recompile the kernel.

Having a module option like this is useful in some cases, where the vendor
may release an alternate revision of the hardware using a different tuner,
but without changing the pci subsystem / usb device ids.

This option is intended for debugging purposes _only_.

Signed-off-by: default avatarMichael Krufky <mkrufky@linuxtv.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@infradead.org>
parent ff3e7dd5

drivers/media/dvb/frontends/dvb-pll.c

+13 −1
Original line number Diff line number Diff line
@@ -52,6 +52,11 @@ static unsigned int input[DVB_PLL_MAX] = { [ 0 ... (DVB_PLL_MAX-1) ] = 0 }; 
module_param_array(input, int, NULL, 0644);

MODULE_PARM_DESC(input,"specify rf input choice, 0 for autoselect (default)");



static unsigned int id[DVB_PLL_MAX] =

	{ [ 0 ... (DVB_PLL_MAX-1) ] = DVB_PLL_UNDEFINED };

module_param_array(id, int, NULL, 0644);

MODULE_PARM_DESC(id, "force pll id to use (DEBUG ONLY)");



/* ----------------------------------------------------------- */



struct dvb_pll_desc {
@@ -794,6 +799,10 @@ struct dvb_frontend *dvb_pll_attach(struct dvb_frontend *fe, int pll_addr, 
	int ret;

	struct dvb_pll_desc *desc;



	if ((id[dvb_pll_devcount] > DVB_PLL_UNDEFINED) &&

	    (id[dvb_pll_devcount] < ARRAY_SIZE(pll_list)))

		pll_desc_id = id[dvb_pll_devcount];



	BUG_ON(pll_desc_id < 1 || pll_desc_id >= ARRAY_SIZE(pll_list));



	desc = pll_list[pll_desc_id];
@@ -836,7 +845,10 @@ struct dvb_frontend *dvb_pll_attach(struct dvb_frontend *fe, int pll_addr, 
		printk("dvb-pll[%d]", priv->nr);

		if (i2c != NULL)

			printk(" %d-%04x", i2c_adapter_id(i2c), pll_addr);

		printk(": id# %d (%s) attached\n", pll_desc_id, desc->name);

		printk(": id# %d (%s) attached, %s\n", pll_desc_id, desc->name,

		       id[priv->nr] == pll_desc_id ?

				"insmod option" : "autodetected");



	}



	return fe;