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alistair23-linux/drivers/media/dvb-frontends/ix2505v.c
Sakari Ailus bcb63314e2 [media] media: Drop FSF's postal address from the source code files 
Drop the FSF's postal address from the source code files that typically
contain mostly the license text. Of the 628 removed instances, 578 are
outdated.

The patch has been created with the following command without manual edits:

git grep -l "675 Mass Ave\|59 Temple Place\|51 Franklin St" -- \
	drivers/media/ include/media|while read i; do i=$i perl -e '
open(F,"< $ENV{i}");
$a=join("", <F>);
$a =~ s/[ \t]*\*\n.*You should.*\n.*along with.*\n.*(\n.*USA.*$)?\n//m
	&& $a =~ s/(^.*)Or, (point your browser to) /$1To obtain the license, $2\n$1/m;
close(F);
open(F, "> $ENV{i}");
print F $a;
close(F);'; done

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
2017-01-27 11:38:09 -02:00

321 lines
7.5 KiB
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/**
* Driver for Sharp IX2505V (marked B0017) DVB-S silicon tuner
*
* Copyright (C) 2010 Malcolm Priestley
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License Version 2, as
* published by the Free Software Foundation.
*
* 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.
*
*/
#include <linux/module.h>
#include <linux/dvb/frontend.h>
#include <linux/slab.h>
#include <linux/types.h>
#include "ix2505v.h"
static int ix2505v_debug;
#define dprintk(level, args...) do { \
if (ix2505v_debug & level) \
printk(KERN_DEBUG "ix2505v: " args); \
} while (0)
#define deb_info(args...) dprintk(0x01, args)
#define deb_i2c(args...) dprintk(0x02, args)
struct ix2505v_state {
struct i2c_adapter *i2c;
const struct ix2505v_config *config;
u32 frequency;
};
/**
* Data read format of the Sharp IX2505V B0017
*
* byte1: 1 | 1 | 0 | 0 | 0 | MA1 | MA0 | 1
* byte2: POR | FL | RD2 | RD1 | RD0 | X | X | X
*
* byte1 = address
* byte2;
* POR = Power on Reset (VCC H=<2.2v L=>2.2v)
* FL = Phase Lock (H=lock L=unlock)
* RD0-2 = Reserved internal operations
*
* Only POR can be used to check the tuner is present
*
* Caution: after byte2 the I2C reverts to write mode continuing to read
* may corrupt tuning data.
*
*/
static int ix2505v_read_status_reg(struct ix2505v_state *state)
{
u8 addr = state->config->tuner_address;
u8 b2[] = {0};
int ret;
struct i2c_msg msg[1] = {
{ .addr = addr, .flags = I2C_M_RD, .buf = b2, .len = 1 }
};
ret = i2c_transfer(state->i2c, msg, 1);
deb_i2c("Read %s ", __func__);
return (ret == 1) ? (int) b2[0] : -1;
}
static int ix2505v_write(struct ix2505v_state *state, u8 buf[], u8 count)
{
struct i2c_msg msg[1] = {
{ .addr = state->config->tuner_address, .flags = 0,
.buf = buf, .len = count },
};
int ret;
ret = i2c_transfer(state->i2c, msg, 1);
if (ret != 1) {
deb_i2c("%s: i2c error, ret=%d\n", __func__, ret);
return -EIO;
}
return 0;
}
static void ix2505v_release(struct dvb_frontend *fe)
{
struct ix2505v_state *state = fe->tuner_priv;
fe->tuner_priv = NULL;
kfree(state);
}
/**
* Data write format of the Sharp IX2505V B0017
*
* byte1: 1 | 1 | 0 | 0 | 0 | 0(MA1)| 0(MA0)| 0
* byte2: 0 | BG1 | BG2 | N8 | N7 | N6 | N5 | N4
* byte3: N3 | N2 | N1 | A5 | A4 | A3 | A2 | A1
* byte4: 1 | 1(C1) | 1(C0) | PD5 | PD4 | TM | 0(RTS)| 1(REF)
* byte5: BA2 | BA1 | BA0 | PSC | PD3 |PD2/TS2|DIV/TS1|PD0/TS0
*
* byte1 = address
*
* Write order
* 1) byte1 -> byte2 -> byte3 -> byte4 -> byte5
* 2) byte1 -> byte4 -> byte5 -> byte2 -> byte3
* 3) byte1 -> byte2 -> byte3 -> byte4
* 4) byte1 -> byte4 -> byte5 -> byte2
* 5) byte1 -> byte2 -> byte3
* 6) byte1 -> byte4 -> byte5
* 7) byte1 -> byte2
* 8) byte1 -> byte4
*
* Recommended Setup
* 1 -> 8 -> 6
*/
static int ix2505v_set_params(struct dvb_frontend *fe)
{
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
struct ix2505v_state *state = fe->tuner_priv;
u32 frequency = c->frequency;
u32 b_w = (c->symbol_rate * 27) / 32000;
u32 div_factor, N , A, x;
int ret = 0, len;
u8 gain, cc, ref, psc, local_osc, lpf;
u8 data[4] = {0};
if ((frequency < fe->ops.info.frequency_min)
|| (frequency > fe->ops.info.frequency_max))
return -EINVAL;
if (state->config->tuner_gain)
gain = (state->config->tuner_gain < 4)
? state->config->tuner_gain : 0;
else
gain = 0x0;
if (state->config->tuner_chargepump)
cc = state->config->tuner_chargepump;
else
cc = 0x3;
ref = 8; /* REF =1 */
psc = 32; /* PSC = 0 */
div_factor = (frequency * ref) / 40; /* local osc = 4Mhz */
x = div_factor / psc;
N = x/100;
A = ((x - (N * 100)) * psc) / 100;
data[0] = ((gain & 0x3) << 5) | (N >> 3);
data[1] = (N << 5) | (A & 0x1f);
data[2] = 0x81 | ((cc & 0x3) << 5) ; /*PD5,PD4 & TM = 0|C1,C0|REF=1*/
deb_info("Frq=%d x=%d N=%d A=%d\n", frequency, x, N, A);
if (frequency <= 1065000)
local_osc = (6 << 5) | 2;
else if (frequency <= 1170000)
local_osc = (7 << 5) | 2;
else if (frequency <= 1300000)
local_osc = (1 << 5);
else if (frequency <= 1445000)
local_osc = (2 << 5);
else if (frequency <= 1607000)
local_osc = (3 << 5);
else if (frequency <= 1778000)
local_osc = (4 << 5);
else if (frequency <= 1942000)
local_osc = (5 << 5);
else /*frequency up to 2150000*/
local_osc = (6 << 5);
data[3] = local_osc; /* all other bits set 0 */
if (b_w <= 10000)
lpf = 0xc;
else if (b_w <= 12000)
lpf = 0x2;
else if (b_w <= 14000)
lpf = 0xa;
else if (b_w <= 16000)
lpf = 0x6;
else if (b_w <= 18000)
lpf = 0xe;
else if (b_w <= 20000)
lpf = 0x1;
else if (b_w <= 22000)
lpf = 0x9;
else if (b_w <= 24000)
lpf = 0x5;
else if (b_w <= 26000)
lpf = 0xd;
else if (b_w <= 28000)
lpf = 0x3;
else
lpf = 0xb;
deb_info("Osc=%x b_w=%x lpf=%x\n", local_osc, b_w, lpf);
deb_info("Data 0=[%4phN]\n", data);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
len = sizeof(data);
ret |= ix2505v_write(state, data, len);
data[2] |= 0x4; /* set TM = 1 other bits same */
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
len = 1;
ret |= ix2505v_write(state, &data[2], len); /* write byte 4 only */
msleep(10);
data[2] |= ((lpf >> 2) & 0x3) << 3; /* lpf */
data[3] |= (lpf & 0x3) << 2;
deb_info("Data 2=[%x%x]\n", data[2], data[3]);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
len = 2;
ret |= ix2505v_write(state, &data[2], len); /* write byte 4 & 5 */
if (state->config->min_delay_ms)
msleep(state->config->min_delay_ms);
state->frequency = frequency;
return ret;
}
static int ix2505v_get_frequency(struct dvb_frontend *fe, u32 *frequency)
{
struct ix2505v_state *state = fe->tuner_priv;
*frequency = state->frequency;
return 0;
}
static const struct dvb_tuner_ops ix2505v_tuner_ops = {
.info = {
.name = "Sharp IX2505V (B0017)",
.frequency_min = 950000,
.frequency_max = 2175000
},
.release = ix2505v_release,
.set_params = ix2505v_set_params,
.get_frequency = ix2505v_get_frequency,
};
struct dvb_frontend *ix2505v_attach(struct dvb_frontend *fe,
const struct ix2505v_config *config,
struct i2c_adapter *i2c)
{
struct ix2505v_state *state = NULL;
int ret;
if (NULL == config) {
deb_i2c("%s: no config ", __func__);
goto error;
}
state = kzalloc(sizeof(struct ix2505v_state), GFP_KERNEL);
if (NULL == state)
return NULL;
state->config = config;
state->i2c = i2c;
if (state->config->tuner_write_only) {
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
ret = ix2505v_read_status_reg(state);
if (ret & 0x80) {
deb_i2c("%s: No IX2505V found\n", __func__);
goto error;
}
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
}
fe->tuner_priv = state;
memcpy(&fe->ops.tuner_ops, &ix2505v_tuner_ops,
sizeof(struct dvb_tuner_ops));
deb_i2c("%s: initialization (%s addr=0x%02x) ok\n",
__func__, fe->ops.tuner_ops.info.name, config->tuner_address);
return fe;
error:
kfree(state);
return NULL;
}
EXPORT_SYMBOL(ix2505v_attach);
module_param_named(debug, ix2505v_debug, int, 0644);
MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
MODULE_DESCRIPTION("DVB IX2505V tuner driver");
MODULE_AUTHOR("Malcolm Priestley");
MODULE_LICENSE("GPL");
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