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/drivers/media/dvb/mantis/mantis_vp2033.c

https://bitbucket.org/ndreys/linux-sunxi
C | 187 lines | 130 code | 36 blank | 21 comment | 23 complexity | 9274359b4a5b7bda905a79c1f32b06cf MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
  1/*
  2	Mantis VP-2033 driver
  3
  4	Copyright (C) Manu Abraham (abraham.manu@gmail.com)
  5
  6	This program is free software; you can redistribute it and/or modify
  7	it under the terms of the GNU General Public License as published by
  8	the Free Software Foundation; either version 2 of the License, or
  9	(at your option) any later version.
 10
 11	This program is distributed in the hope that it will be useful,
 12	but WITHOUT ANY WARRANTY; without even the implied warranty of
 13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 14	GNU General Public License for more details.
 15
 16	You should have received a copy of the GNU General Public License
 17	along with this program; if not, write to the Free Software
 18	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 19*/
 20
 21#include <linux/signal.h>
 22#include <linux/sched.h>
 23#include <linux/interrupt.h>
 24
 25#include "dmxdev.h"
 26#include "dvbdev.h"
 27#include "dvb_demux.h"
 28#include "dvb_frontend.h"
 29#include "dvb_net.h"
 30
 31#include "tda1002x.h"
 32#include "mantis_common.h"
 33#include "mantis_ioc.h"
 34#include "mantis_dvb.h"
 35#include "mantis_vp2033.h"
 36
 37#define MANTIS_MODEL_NAME	"VP-2033"
 38#define MANTIS_DEV_TYPE		"DVB-C"
 39
 40struct tda1002x_config vp2033_tda1002x_cu1216_config = {
 41	.demod_address = 0x18 >> 1,
 42	.invert = 1,
 43};
 44
 45struct tda10023_config vp2033_tda10023_cu1216_config = {
 46	.demod_address = 0x18 >> 1,
 47	.invert = 1,
 48};
 49
 50static u8 read_pwm(struct mantis_pci *mantis)
 51{
 52	struct i2c_adapter *adapter = &mantis->adapter;
 53
 54	u8 b = 0xff;
 55	u8 pwm;
 56	struct i2c_msg msg[] = {
 57		{.addr = 0x50, .flags = 0, .buf = &b, .len = 1},
 58		{.addr = 0x50, .flags = I2C_M_RD, .buf = &pwm, .len = 1}
 59	};
 60
 61	if ((i2c_transfer(adapter, msg, 2) != 2)
 62	    || (pwm == 0xff))
 63		pwm = 0x48;
 64
 65	return pwm;
 66}
 67
 68static int tda1002x_cu1216_tuner_set(struct dvb_frontend *fe, struct dvb_frontend_parameters *params)
 69{
 70	struct mantis_pci *mantis = fe->dvb->priv;
 71	struct i2c_adapter *adapter = &mantis->adapter;
 72
 73	u8 buf[6];
 74	struct i2c_msg msg = {.addr = 0x60, .flags = 0, .buf = buf, .len = sizeof(buf)};
 75	int i;
 76
 77#define CU1216_IF 36125000
 78#define TUNER_MUL 62500
 79
 80	u32 div = (params->frequency + CU1216_IF + TUNER_MUL / 2) / TUNER_MUL;
 81
 82	buf[0] = (div >> 8) & 0x7f;
 83	buf[1] = div & 0xff;
 84	buf[2] = 0xce;
 85	buf[3] = (params->frequency < 150000000 ? 0x01 :
 86		  params->frequency < 445000000 ? 0x02 : 0x04);
 87	buf[4] = 0xde;
 88	buf[5] = 0x20;
 89
 90	if (fe->ops.i2c_gate_ctrl)
 91		fe->ops.i2c_gate_ctrl(fe, 1);
 92
 93	if (i2c_transfer(adapter, &msg, 1) != 1)
 94		return -EIO;
 95
 96	/* wait for the pll lock */
 97	msg.flags = I2C_M_RD;
 98	msg.len = 1;
 99	for (i = 0; i < 20; i++) {
100		if (fe->ops.i2c_gate_ctrl)
101			fe->ops.i2c_gate_ctrl(fe, 1);
102
103		if (i2c_transfer(adapter, &msg, 1) == 1 && (buf[0] & 0x40))
104			break;
105
106		msleep(10);
107	}
108
109	/* switch the charge pump to the lower current */
110	msg.flags = 0;
111	msg.len = 2;
112	msg.buf = &buf[2];
113	buf[2] &= ~0x40;
114	if (fe->ops.i2c_gate_ctrl)
115		fe->ops.i2c_gate_ctrl(fe, 1);
116
117	if (i2c_transfer(adapter, &msg, 1) != 1)
118		return -EIO;
119
120	return 0;
121}
122
123static int vp2033_frontend_init(struct mantis_pci *mantis, struct dvb_frontend *fe)
124{
125	struct i2c_adapter *adapter = &mantis->adapter;
126
127	int err = 0;
128
129	err = mantis_frontend_power(mantis, POWER_ON);
130	if (err == 0) {
131		mantis_frontend_soft_reset(mantis);
132		msleep(250);
133
134		dprintk(MANTIS_ERROR, 1, "Probing for CU1216 (DVB-C)");
135		fe = dvb_attach(tda10021_attach, &vp2033_tda1002x_cu1216_config,
136				     adapter,
137				     read_pwm(mantis));
138
139		if (fe) {
140			dprintk(MANTIS_ERROR, 1,
141				"found Philips CU1216 DVB-C frontend (TDA10021) @ 0x%02x",
142				vp2033_tda1002x_cu1216_config.demod_address);
143		} else {
144			fe = dvb_attach(tda10023_attach, &vp2033_tda10023_cu1216_config,
145					     adapter,
146					     read_pwm(mantis));
147
148			if (fe) {
149				dprintk(MANTIS_ERROR, 1,
150					"found Philips CU1216 DVB-C frontend (TDA10023) @ 0x%02x",
151					vp2033_tda1002x_cu1216_config.demod_address);
152			}
153		}
154
155		if (fe) {
156			fe->ops.tuner_ops.set_params = tda1002x_cu1216_tuner_set;
157			dprintk(MANTIS_ERROR, 1, "Mantis DVB-C Philips CU1216 frontend attach success");
158		} else {
159			return -1;
160		}
161	} else {
162		dprintk(MANTIS_ERROR, 1, "Frontend on <%s> POWER ON failed! <%d>",
163			adapter->name,
164			err);
165
166		return -EIO;
167	}
168
169	mantis->fe = fe;
170	dprintk(MANTIS_DEBUG, 1, "Done!");
171
172	return 0;
173}
174
175struct mantis_hwconfig vp2033_config = {
176	.model_name	= MANTIS_MODEL_NAME,
177	.dev_type	= MANTIS_DEV_TYPE,
178	.ts_size	= MANTIS_TS_204,
179
180	.baud_rate	= MANTIS_BAUD_9600,
181	.parity		= MANTIS_PARITY_NONE,
182	.bytes		= 0,
183
184	.frontend_init	= vp2033_frontend_init,
185	.power		= GPIF_A12,
186	.reset		= GPIF_A13,
187};