1 files changed, 168 insertions, 0 deletions

diff --git a/drivers/media/dvb/frontends/dvb-pll.c b/drivers/media/dvb/frontends/dvb-pll.c
new file mode 100644
index 000000000000..2a3c2ce7b2aa
--- /dev/null
+++ b/drivers/media/dvb/frontends/dvb-pll.c
@@ -0,0 +1,168 @@
+/*
+ * $Id: dvb-pll.c,v 1.7 2005/02/10 11:52:02 kraxel Exp $
+ *
+ * descriptions + helper functions for simple dvb plls.
+ *
+ * (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/dvb/frontend.h>
+#include <asm/types.h>
+
+#include "dvb-pll.h"
+
+/* ----------------------------------------------------------- */
+/* descriptions                                                */
+
+struct dvb_pll_desc dvb_pll_thomson_dtt7579 = {
+        .name  = "Thomson dtt7579",
+        .min   = 177000000,
+        .max   = 858000000,
+        .count = 5,
+        .entries = {
+                {          0, 36166667, 166666, 0xb4, 0x03 }, /* go sleep */
+                {  443250000, 36166667, 166666, 0xb4, 0x02 },
+                {  542000000, 36166667, 166666, 0xb4, 0x08 },
+                {  771000000, 36166667, 166666, 0xbc, 0x08 },
+                {  999999999, 36166667, 166666, 0xf4, 0x08 },
+        },
+};
+EXPORT_SYMBOL(dvb_pll_thomson_dtt7579);
+
+struct dvb_pll_desc dvb_pll_thomson_dtt7610 = {
+        .name  = "Thomson dtt7610",
+        .min   =  44000000,
+        .max   = 958000000,
+        .count = 3,
+        .entries = {
+                { 157250000, 44000000, 62500, 0x8e, 0x39 },
+                { 454000000, 44000000, 62500, 0x8e, 0x3a },
+                { 999999999, 44000000, 62500, 0x8e, 0x3c },
+        },
+};
+EXPORT_SYMBOL(dvb_pll_thomson_dtt7610);
+
+static void thomson_dtt759x_bw(u8 *buf, int bandwidth)
+{
+        if (BANDWIDTH_7_MHZ == bandwidth)
+                buf[3] |= 0x10;
+}
+
+struct dvb_pll_desc dvb_pll_thomson_dtt759x = {
+        .name  = "Thomson dtt759x",
+        .min   = 177000000,
+        .max   = 896000000,
+        .setbw = thomson_dtt759x_bw,
+        .count = 6,
+        .entries = {
+                {          0, 36166667, 166666, 0x84, 0x03 },
+                {  264000000, 36166667, 166666, 0xb4, 0x02 },
+                {  470000000, 36166667, 166666, 0xbc, 0x02 },
+                {  735000000, 36166667, 166666, 0xbc, 0x08 },
+                {  835000000, 36166667, 166666, 0xf4, 0x08 },
+                {  999999999, 36166667, 166666, 0xfc, 0x08 },
+        },
+};
+EXPORT_SYMBOL(dvb_pll_thomson_dtt759x);
+
+struct dvb_pll_desc dvb_pll_lg_z201 = {
+        .name  = "LG z201",
+        .min   = 174000000,
+        .max   = 862000000,
+        .count = 5,
+        .entries = {
+                {          0, 36166667, 166666, 0xbc, 0x03 },
+                {  443250000, 36166667, 166666, 0xbc, 0x01 },
+                {  542000000, 36166667, 166666, 0xbc, 0x02 },
+                {  830000000, 36166667, 166666, 0xf4, 0x02 },
+                {  999999999, 36166667, 166666, 0xfc, 0x02 },
+        },
+};
+EXPORT_SYMBOL(dvb_pll_lg_z201);
+
+struct dvb_pll_desc dvb_pll_unknown_1 = {
+        .name  = "unknown 1", /* used by dntv live dvb-t */
+        .min   = 174000000,
+        .max   = 862000000,
+        .count = 9,
+        .entries = {
+                {  150000000, 36166667, 166666, 0xb4, 0x01 },
+                {  173000000, 36166667, 166666, 0xbc, 0x01 },
+                {  250000000, 36166667, 166666, 0xb4, 0x02 },
+                {  400000000, 36166667, 166666, 0xbc, 0x02 },
+                {  420000000, 36166667, 166666, 0xf4, 0x02 },
+                {  470000000, 36166667, 166666, 0xfc, 0x02 },
+                {  600000000, 36166667, 166666, 0xbc, 0x08 },
+                {  730000000, 36166667, 166666, 0xf4, 0x08 },
+                {  999999999, 36166667, 166666, 0xfc, 0x08 },
+        },
+};
+EXPORT_SYMBOL(dvb_pll_unknown_1);
+
+/* ----------------------------------------------------------- */
+/* code                                                        */
+
+static int debug = 0;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "enable verbose debug messages");
+
+int dvb_pll_configure(struct dvb_pll_desc *desc, u8 *buf,
+                      u32 freq, int bandwidth)
+{
+        u32 div;
+        int i;
+
+        if (freq != 0 && (freq < desc->min || freq > desc->max))
+            return -EINVAL;
+
+        for (i = 0; i < desc->count; i++) {
+                if (freq > desc->entries[i].limit)
+                        continue;
+                break;
+        }
+        if (debug)
+                printk("pll: %s: freq=%d bw=%d | i=%d/%d\n",
+                       desc->name, freq, bandwidth, i, desc->count);
+        BUG_ON(i == desc->count);
+
+        div = (freq + desc->entries[i].offset) / desc->entries[i].stepsize;
+        buf[0] = div >> 8;
+        buf[1] = div & 0xff;
+        buf[2] = desc->entries[i].cb1;
+        buf[3] = desc->entries[i].cb2;
+
+        if (desc->setbw)
+                desc->setbw(buf, bandwidth);
+
+        if (debug)
+                printk("pll: %s: div=%d | buf=0x%02x,0x%02x,0x%02x,0x%02x\n",
+                       desc->name, div, buf[0], buf[1], buf[2], buf[3]);
+
+        return 0;
+}
+EXPORT_SYMBOL(dvb_pll_configure);
+
+MODULE_DESCRIPTION("dvb pll library");
+MODULE_AUTHOR("Gerd Knorr");
+MODULE_LICENSE("GPL");
+
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */