dvb: add pll lib

Hi,

This adds some helper code to handle tuning for dvb cards, with a struct describing the pll and a function calculating the command sequence needed to program it.

This one was discussed + accepted on the linuxtv list and also is in the linuxtv cvs. As the the cx88 driver update I want finally get out of the door depends on this one I'll go submit it myself instead of waiting for the dvb guys doing it.

Gerd

---
 drivers/media/dvb/frontends/Makefile  |    1 
 drivers/media/dvb/frontends/dvb-pll.c |  168 ++++++++++++++++++++++++++
 drivers/media/dvb/frontends/dvb-pll.h |   34 +++++
 3 files changed, 203 insertions(+)

Index: linux-2.6.11-rc4/drivers/media/dvb/frontends/Makefile
===================================================================
@@ -4,6 +4,7 @@
 
 EXTRA_CFLAGS = -Idrivers/media/dvb/dvb-core/
 
+obj-$(CONFIG_DVB_CORE) += dvb-pll.o
 obj-$(CONFIG_DVB_STV0299) += stv0299.o
 obj-$(CONFIG_DVB_SP8870) += sp8870.o
 obj-$(CONFIG_DVB_CX22700) += cx22700.o

Index: linux-2.6.11-rc4/drivers/media/dvb/frontends/dvb-pll.h
===================================================================
@@ -0,0 +1,34 @@
+/*
+ * $Id: dvb-pll.h,v 1.2 2005/02/10 11:43:41 kraxel Exp $
+ */
+
+struct dvb_pll_desc {
+	char *name;
+	u32  min;
+	u32  max;
+	void (*setbw)(u8 *buf, int bandwidth);
+	int  count;
+	struct {
+		u32 limit;
+		u32 offset;
+		u32 stepsize;
+		u8  cb1;
+		u8  cb2;
+	} entries[];
+};
+
+extern struct dvb_pll_desc dvb_pll_thomson_dtt7579;
+extern struct dvb_pll_desc dvb_pll_thomson_dtt759x;
+extern struct dvb_pll_desc dvb_pll_thomson_dtt7610;
+extern struct dvb_pll_desc dvb_pll_lg_z201;
+extern struct dvb_pll_desc dvb_pll_unknown_1;
+
+int dvb_pll_configure(struct dvb_pll_desc *desc, u8 *buf,
+		      u32 freq, int bandwidth);
+
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * compile-command: "make DVB=1"
+ * End:
+ */

#define printk(args...) fprintf(stderr, ## args)

(linux-dvb list removed from Cc: because it is subscribers only)

Michael Hunold is somewhat busy with his new job at Toshiba, so I want to takeover patch submission for now. However, one thing that makes it difficult to create kernel patches from linuxtv.org CVS is that there are a large number of whitespace differences between the kernel tree and CVS. There's also some corrupted indentation in the kernel, e.g. drivers/media/dvb/frontends/tda1004x.c:tda1004x_sleep().
I wanted to get this issue out of the way before I start
to submit other patches from linuxtv.org CVS.

I merged some whitespace cleanups from the kernel into CVS, and created a patch to clean up whitespace in the kernel, removing lots of whitespace at end-of-line in the go. The problem with this patch is that it is huge (600K) :-(. I was crazy enough to mail it to Linus anyway on Sunday, and it looks like it got dropped on the floor :-((

It would be nice if I could get some advice how to submit this kind of cleanup (i.e. if I should split it up in tiny fragments), or if I should ignore the issue for now and concentrate on functional improvements.

The DVB related patches submitted by Gerd are non-controversial and should be applied.

Johannes