Commit b9ede79a authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab
Browse files

[media] add a driver for mb86a20s 



This adds the trivial bits to mb86a20s. As the driver won't touch
at the channel/layer parameters, this may not be enough for
receiving all channels, especially ISDB-Tsb, but the driver worked
properly for receiving video channels on my tests.

Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent ca3dfd6a

drivers/media/dvb/frontends/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -512,6 +512,14 @@ config DVB_DIB8000 
	  A driver for DiBcom's DiB8000 ISDB-T/ISDB-Tsb demodulator.

	  Say Y when you want to support this frontend.



config DVB_MB86A20S

	tristate "Fujitsu mb86a20s"

	depends on DVB_CORE && I2C

	default m if DVB_FE_CUSTOMISE

	help

	  A driver for Fujitsu mb86a20s ISDB-T/ISDB-Tsb demodulator.

	  Say Y when you want to support this frontend.



comment "Digital terrestrial only tuners/PLL"

	depends on DVB_CORE

drivers/media/dvb/frontends/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -81,4 +81,5 @@ obj-$(CONFIG_DVB_ISL6423) += isl6423.o 
obj-$(CONFIG_DVB_EC100) += ec100.o

obj-$(CONFIG_DVB_DS3000) += ds3000.o

obj-$(CONFIG_DVB_MB86A16) += mb86a16.o

obj-$(CONFIG_DVB_MB86A20S) += mb86a20s.o

obj-$(CONFIG_DVB_IX2505V) += ix2505v.o

drivers/media/dvb/frontends/mb86a20s.c

0 → 100644
+584 −0
Original line number Diff line number Diff line 
/*

 *   Fujitu mb86a20s ISDB-T/ISDB-Tsb Module driver

 *

 *   Copyright (C) 2010 Mauro Carvalho Chehab <mchehab@redhat.com>

 *   Copyright (C) 2009-2010 Douglas Landgraf <dougsland@redhat.com>

 *

 *   FIXME: Need to port to DVB v5.2 API

 *

 *   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 version 2.

 *

 *   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/kernel.h>

#include <asm/div64.h>



#include "dvb_frontend.h"

#include "mb86a20s.h"



static int debug = 1;

module_param(debug, int, 0644);

MODULE_PARM_DESC(debug, "Activates frontend debugging (default:0)");



#define rc(args...)  do {						\

	printk(KERN_ERR  "mb86a20s: " args);				\

} while (0)



#define dprintk(args...)						\

	do {								\

		if (debug) {						\

			printk(KERN_DEBUG "mb86a20s: %s: ", __func__);	\

			printk(args);					\

		}							\

	} while (0)



struct mb86a20s_state {

	struct i2c_adapter *i2c;

	const struct mb86a20s_config *config;



	struct dvb_frontend frontend;









};



struct regdata {

	u8 reg;

	u8 data;

};



/*

 * Initialization sequence: Use whatevere default values that PV SBTVD

 * does on its initialisation, obtained via USB snoop

 */

static struct regdata mb86a20s_init[] = {

	{ 0x70, 0x0f },

	{ 0x70, 0xff },

	{ 0x08, 0x01 },

	{ 0x09, 0x3e },

	{ 0x50, 0xd1 },

	{ 0x51, 0x22 },

	{ 0x39, 0x01 },

	{ 0x71, 0x00 },

	{ 0x28, 0x2a },

	{ 0x29, 0x00 },

	{ 0x2a, 0xff },

	{ 0x2b, 0x80 },

	{ 0x28, 0x20 },

	{ 0x29, 0x33 },

	{ 0x2a, 0xdf },

	{ 0x2b, 0xa9 },

	{ 0x3b, 0x21 },

	{ 0x3c, 0x3a },

	{ 0x01, 0x0d },

	{ 0x04, 0x08 },

	{ 0x05, 0x05 },

	{ 0x04, 0x0e },

	{ 0x05, 0x00 },

	{ 0x04, 0x0f },

	{ 0x05, 0x14 },

	{ 0x04, 0x0b },

	{ 0x05, 0x8c },

	{ 0x04, 0x00 },

	{ 0x05, 0x00 },

	{ 0x04, 0x01 },

	{ 0x05, 0x07 },

	{ 0x04, 0x02 },

	{ 0x05, 0x0f },

	{ 0x04, 0x03 },

	{ 0x05, 0xa0 },

	{ 0x04, 0x09 },

	{ 0x05, 0x00 },

	{ 0x04, 0x0a },

	{ 0x05, 0xff },

	{ 0x04, 0x27 },

	{ 0x05, 0x64 },

	{ 0x04, 0x28 },

	{ 0x05, 0x00 },

	{ 0x04, 0x1e },

	{ 0x05, 0xff },

	{ 0x04, 0x29 },

	{ 0x05, 0x0a },

	{ 0x04, 0x32 },

	{ 0x05, 0x0a },

	{ 0x04, 0x14 },

	{ 0x05, 0x02 },

	{ 0x04, 0x04 },

	{ 0x05, 0x00 },

	{ 0x04, 0x05 },

	{ 0x05, 0x22 },

	{ 0x04, 0x06 },

	{ 0x05, 0x0e },

	{ 0x04, 0x07 },

	{ 0x05, 0xd8 },

	{ 0x04, 0x12 },

	{ 0x05, 0x00 },

	{ 0x04, 0x13 },

	{ 0x05, 0xff },

	{ 0x52, 0x01 },

	{ 0x50, 0xa7 },

	{ 0x51, 0x00 },

	{ 0x50, 0xa8 },

	{ 0x51, 0xff },

	{ 0x50, 0xa9 },

	{ 0x51, 0xff },

	{ 0x50, 0xaa },

	{ 0x51, 0x00 },

	{ 0x50, 0xab },

	{ 0x51, 0xff },

	{ 0x50, 0xac },

	{ 0x51, 0xff },

	{ 0x50, 0xad },

	{ 0x51, 0x00 },

	{ 0x50, 0xae },

	{ 0x51, 0xff },

	{ 0x50, 0xaf },

	{ 0x51, 0xff },

	{ 0x5e, 0x07 },

	{ 0x50, 0xdc },

	{ 0x51, 0x01 },

	{ 0x50, 0xdd },

	{ 0x51, 0xf4 },

	{ 0x50, 0xde },

	{ 0x51, 0x01 },

	{ 0x50, 0xdf },

	{ 0x51, 0xf4 },

	{ 0x50, 0xe0 },

	{ 0x51, 0x01 },

	{ 0x50, 0xe1 },

	{ 0x51, 0xf4 },

	{ 0x50, 0xb0 },

	{ 0x51, 0x07 },

	{ 0x50, 0xb2 },

	{ 0x51, 0xff },

	{ 0x50, 0xb3 },

	{ 0x51, 0xff },

	{ 0x50, 0xb4 },

	{ 0x51, 0xff },

	{ 0x50, 0xb5 },

	{ 0x51, 0xff },

	{ 0x50, 0xb6 },

	{ 0x51, 0xff },

	{ 0x50, 0xb7 },

	{ 0x51, 0xff },

	{ 0x50, 0x50 },

	{ 0x51, 0x02 },

	{ 0x50, 0x51 },

	{ 0x51, 0x04 },

	{ 0x45, 0x04 },

	{ 0x48, 0x04 },

	{ 0x50, 0xd5 },

	{ 0x51, 0x01 },

	{ 0x50, 0xd6 },

	{ 0x51, 0x1f },

	{ 0x50, 0xd2 },

	{ 0x51, 0x03 },

	{ 0x50, 0xd7 },

	{ 0x51, 0x3f },

	{ 0x1c, 0x01 },

	{ 0x28, 0x06 },

	{ 0x29, 0x00 },

	{ 0x2a, 0x00 },

	{ 0x2b, 0x03 },

	{ 0x28, 0x07 },

	{ 0x29, 0x00 },

	{ 0x2a, 0x00 },

	{ 0x2b, 0x0d },

	{ 0x28, 0x08 },

	{ 0x29, 0x00 },

	{ 0x2a, 0x00 },

	{ 0x2b, 0x02 },

	{ 0x28, 0x09 },

	{ 0x29, 0x00 },

	{ 0x2a, 0x00 },

	{ 0x2b, 0x01 },

	{ 0x28, 0x0a },

	{ 0x29, 0x00 },

	{ 0x2a, 0x00 },

	{ 0x2b, 0x21 },

	{ 0x28, 0x0b },

	{ 0x29, 0x00 },

	{ 0x2a, 0x00 },

	{ 0x2b, 0x29 },

	{ 0x28, 0x0c },

	{ 0x29, 0x00 },

	{ 0x2a, 0x00 },

	{ 0x2b, 0x16 },

	{ 0x28, 0x0d },

	{ 0x29, 0x00 },

	{ 0x2a, 0x00 },

	{ 0x2b, 0x31 },

	{ 0x28, 0x0e },

	{ 0x29, 0x00 },

	{ 0x2a, 0x00 },

	{ 0x2b, 0x0e },

	{ 0x28, 0x0f },

	{ 0x29, 0x00 },

	{ 0x2a, 0x00 },

	{ 0x2b, 0x4e },

	{ 0x28, 0x10 },

	{ 0x29, 0x00 },

	{ 0x2a, 0x00 },

	{ 0x2b, 0x46 },

	{ 0x28, 0x11 },

	{ 0x29, 0x00 },

	{ 0x2a, 0x00 },

	{ 0x2b, 0x0f },

	{ 0x28, 0x12 },

	{ 0x29, 0x00 },

	{ 0x2a, 0x00 },

	{ 0x2b, 0x56 },

	{ 0x28, 0x13 },

	{ 0x29, 0x00 },

	{ 0x2a, 0x00 },

	{ 0x2b, 0x35 },

	{ 0x28, 0x14 },

	{ 0x29, 0x00 },

	{ 0x2a, 0x01 },

	{ 0x2b, 0xbe },

	{ 0x28, 0x15 },

	{ 0x29, 0x00 },

	{ 0x2a, 0x01 },

	{ 0x2b, 0x84 },

	{ 0x28, 0x16 },

	{ 0x29, 0x00 },

	{ 0x2a, 0x03 },

	{ 0x2b, 0xee },

	{ 0x28, 0x17 },

	{ 0x29, 0x00 },

	{ 0x2a, 0x00 },

	{ 0x2b, 0x98 },

	{ 0x28, 0x18 },

	{ 0x29, 0x00 },

	{ 0x2a, 0x00 },

	{ 0x2b, 0x9f },

	{ 0x28, 0x19 },

	{ 0x29, 0x00 },

	{ 0x2a, 0x07 },

	{ 0x2b, 0xb2 },

	{ 0x28, 0x1a },

	{ 0x29, 0x00 },

	{ 0x2a, 0x06 },

	{ 0x2b, 0xc2 },

	{ 0x28, 0x1b },

	{ 0x29, 0x00 },

	{ 0x2a, 0x07 },

	{ 0x2b, 0x4a },

	{ 0x28, 0x1c },

	{ 0x29, 0x00 },

	{ 0x2a, 0x01 },

	{ 0x2b, 0xbc },

	{ 0x28, 0x1d },

	{ 0x29, 0x00 },

	{ 0x2a, 0x04 },

	{ 0x2b, 0xba },

	{ 0x28, 0x1e },

	{ 0x29, 0x00 },

	{ 0x2a, 0x06 },

	{ 0x2b, 0x14 },

	{ 0x50, 0x1e },

	{ 0x51, 0x5d },

	{ 0x50, 0x22 },

	{ 0x51, 0x00 },

	{ 0x50, 0x23 },

	{ 0x51, 0xc8 },

	{ 0x50, 0x24 },

	{ 0x51, 0x00 },

	{ 0x50, 0x25 },

	{ 0x51, 0xf0 },

	{ 0x50, 0x26 },

	{ 0x51, 0x00 },

	{ 0x50, 0x27 },

	{ 0x51, 0xc3 },

	{ 0x50, 0x39 },

	{ 0x51, 0x02 },

	{ 0x50, 0xd5 },

	{ 0x51, 0x01 },

	{ 0xd0, 0x00 },

};



static struct regdata mb86a20s_reset_reception[] = {

	{ 0x70, 0xf0 },

	{ 0x70, 0xff },

	{ 0x08, 0x01 },

	{ 0x08, 0x00 },

};



static int mb86a20s_i2c_writereg(struct mb86a20s_state *state,

			     u8 i2c_addr, int reg, int data)

{

	u8 buf[] = { reg, data };

	struct i2c_msg msg = {

		.addr = i2c_addr, .flags = 0, .buf = buf, .len = 2

	};

	int rc;



	rc = i2c_transfer(state->i2c, &msg, 1);

	if (rc != 1) {

		printk("%s: writereg rcor(rc == %i, reg == 0x%02x,"

			 " data == 0x%02x)\n", __func__, rc, reg, data);

		return rc;

	}



	return 0;

}



static int mb86a20s_i2c_writeregdata(struct mb86a20s_state *state,

				     u8 i2c_addr, struct regdata *rd, int size)

{

	int i, rc;



	for (i = 0; i < size; i++) {

		rc = mb86a20s_i2c_writereg(state, i2c_addr, rd[i].reg,

					   rd[i].data);

		if (rc < 0)

			return rc;

	}

	return 0;

}



static int mb86a20s_i2c_readreg(struct mb86a20s_state *state,

				u8 i2c_addr, u8 reg)

{

	u8 val;

	int rc;

	struct i2c_msg msg[] = {

		{ .addr = i2c_addr, .flags = 0, .buf = &reg, .len = 1 },

		{ .addr = i2c_addr, .flags = I2C_M_RD, .buf = &val, .len = 1 }

	};



	rc = i2c_transfer(state->i2c, msg, 2);



	if (rc != 2) {

		rc("%s: reg=0x%x (rcor=%d)\n", __func__, reg, rc);

		return rc;

	}



	return val;

}



#define mb86a20s_readreg(state, reg) \

	mb86a20s_i2c_readreg(state, state->config->demod_address, reg)

#define mb86a20s_writereg(state, reg, val) \

	mb86a20s_i2c_writereg(state, state->config->demod_address, reg, val)

#define mb86a20s_writeregdata(state, regdata) \

	mb86a20s_i2c_writeregdata(state, state->config->demod_address, \

	regdata, ARRAY_SIZE(regdata))



static int mb86a20s_initfe(struct dvb_frontend *fe)

{

	struct mb86a20s_state *state = fe->demodulator_priv;

	int rc;



	dprintk("\n");



	/* Initialize the frontend */

	rc = mb86a20s_writeregdata(state, mb86a20s_init);

	if (rc < 0)

		return rc;



	return 0;

}



static int mb86a20s_read_signal_strength(struct dvb_frontend *fe, u16 *strength)

{

	struct mb86a20s_state *state = fe->demodulator_priv;

	unsigned rf_max, rf_min, rf;

	u8	 val;



	dprintk("\n");



	/* Does a binary search to get RF strength */

	rf_max = 0xfff;

	rf_min = 0;

	do {

		rf = (rf_max + rf_min) / 2;

		mb86a20s_writereg(state, 0x04, 0x1f);

		mb86a20s_writereg(state, 0x05, rf >> 8);

		mb86a20s_writereg(state, 0x04, 0x20);

		mb86a20s_writereg(state, 0x04, rf);



		val = mb86a20s_readreg(state, 0x02);

		if (val & 0x08)

			rf_min = (rf_max + rf_min) / 2;

		else

			rf_max = (rf_max + rf_min) / 2;

		if (rf_max - rf_min < 4) {

			*strength = (((rf_max + rf_min) / 2) * 65535) / 4095;

			break;

		}

	} while (1);



	dprintk("signal strength = %d\n", *strength);



	return 0;

}



static int mb86a20s_read_status(struct dvb_frontend *fe, fe_status_t *status)

{

	struct mb86a20s_state *state = fe->demodulator_priv;

	u8 val;



	dprintk("\n");

	*status = 0;



	val = mb86a20s_readreg(state, 0x0a) & 0xf;



	if (val >= 2)

		*status |= FE_HAS_SIGNAL;



	if (val >= 4)

		*status |= FE_HAS_CARRIER;



	if (val >= 5)

		*status |= FE_HAS_VITERBI;



	if (val >= 7)

		*status |= FE_HAS_SYNC;



	if (val >= 8)				/* Maybe 9? */

		*status |= FE_HAS_LOCK;



	dprintk("val = %d, status = 0x%02x\n", val, *status);



	return 0;

}



static int mb86a20s_set_frontend(struct dvb_frontend *fe,

	struct dvb_frontend_parameters *p)

{

	struct mb86a20s_state *state = fe->demodulator_priv;

	int rc;



	dprintk("\n");



	fe->ops.tuner_ops.set_params(fe, p);

	rc = mb86a20s_writeregdata(state, mb86a20s_reset_reception);



	return rc;

}



static int mb86a20s_get_frontend(struct dvb_frontend *fe,

	struct dvb_frontend_parameters *p)

{



	/* FIXME: For now, it does nothing */



	fe->dtv_property_cache.bandwidth_hz = 6000000;

	fe->dtv_property_cache.transmission_mode = TRANSMISSION_MODE_AUTO;

	fe->dtv_property_cache.guard_interval = GUARD_INTERVAL_AUTO;

	fe->dtv_property_cache.isdbt_partial_reception = 0;



	return 0;

}



static int mb86a20s_tune(struct dvb_frontend *fe,

			struct dvb_frontend_parameters *params,

			unsigned int mode_flags,

			unsigned int *delay,

			fe_status_t *status)

{

	int rc = 0;



	dprintk("\n");



	if (params != NULL)

		rc = mb86a20s_set_frontend(fe, params);



	if (!(mode_flags & FE_TUNE_MODE_ONESHOT))

		mb86a20s_read_status(fe, status);



	return rc;

}



static void mb86a20s_release(struct dvb_frontend *fe)

{

	struct mb86a20s_state *state = fe->demodulator_priv;



	dprintk("\n");



	kfree(state);

}



static struct dvb_frontend_ops mb86a20s_ops;



struct dvb_frontend *mb86a20s_attach(const struct mb86a20s_config *config,

				    struct i2c_adapter *i2c)

{

	u8	rev;



	/* allocate memory for the internal state */

	struct mb86a20s_state *state =

		kzalloc(sizeof(struct mb86a20s_state), GFP_KERNEL);



	dprintk("\n");

	if (state == NULL) {

		rc("Unable to kzalloc\n");

		goto error;

	}



	/* setup the state */

	state->config = config;

	state->i2c = i2c;



	/* create dvb_frontend */

	memcpy(&state->frontend.ops, &mb86a20s_ops,

		sizeof(struct dvb_frontend_ops));

	state->frontend.demodulator_priv = state;



	/* Check if it is a mb86a20s frontend */

	rev = mb86a20s_readreg(state, 0);



	if (rev == 0x13) {

		printk(KERN_INFO "Detected a Fujitsu mb86a20s frontend\n");

	} else {

		printk(KERN_ERR "Frontend revision %d is unknown - aborting.\n",

		       rev);

		goto error;

	}



	return &state->frontend;



error:

	kfree(state);

	return NULL;

}

EXPORT_SYMBOL(mb86a20s_attach);



static struct dvb_frontend_ops mb86a20s_ops = {

	/* Use dib8000 values per default */

	.info = {

		.name = "Fujitsu mb86A20s",

		.type = FE_OFDM,

		.caps = FE_CAN_INVERSION_AUTO | FE_CAN_RECOVER |

			FE_CAN_FEC_1_2  | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |

			FE_CAN_FEC_5_6  | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |

			FE_CAN_QPSK     | FE_CAN_QAM_16  | FE_CAN_QAM_64 |

			FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_QAM_AUTO |

			FE_CAN_GUARD_INTERVAL_AUTO    | FE_CAN_HIERARCHY_AUTO,

		/* Actually, those values depend on the used tuner */

		.frequency_min = 45000000,

		.frequency_max = 864000000,

		.frequency_stepsize = 62500,

	},



	.release = mb86a20s_release,



	.init = mb86a20s_initfe,

	.set_frontend = mb86a20s_set_frontend,

	.get_frontend = mb86a20s_get_frontend,

	.read_status = mb86a20s_read_status,

	.read_signal_strength = mb86a20s_read_signal_strength,

	.tune = mb86a20s_tune,

};



MODULE_DESCRIPTION("DVB Frontend module for Fujitsu mb86A20s hardware");

MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>");

MODULE_LICENSE("GPL");

drivers/media/dvb/frontends/mb86a20s.h

0 → 100644
+51 −0
Original line number Diff line number Diff line 
/*

 *   Fujitsu mb86a20s driver

 *

 *   Copyright (C) 2010 Mauro Carvalho Chehab <mchehab@redhat.com>

 *

 *   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 version 2.

 *

 *   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.

 */



#ifndef MB86A20S_H

#define MB86A20S_H



#include <linux/dvb/frontend.h>



/**

 * struct mb86a20s_config - Define the per-device attributes of the frontend

 *

 * @demod_address:	the demodulator's i2c address

 */



struct mb86a20s_config {

	u8 demod_address;

};



#if defined(CONFIG_DVB_MB86A20S) || (defined(CONFIG_DVB_MB86A20S_MODULE) \

	&& defined(MODULE))

extern struct dvb_frontend *mb86a20s_attach(const struct mb86a20s_config *config,

					   struct i2c_adapter *i2c);

extern struct i2c_adapter *mb86a20s_get_tuner_i2c_adapter(struct dvb_frontend *);

#else

static inline struct dvb_frontend *mb86a20s_attach(

	const struct mb86a20s_config *config, struct i2c_adapter *i2c)

{

	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);

	return NULL;

}

static struct i2c_adapter *

	mb86a20s_get_tuner_i2c_adapter(struct dvb_frontend *fe)

{

	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);

	return NULL;

}

#endif



#endif /* MB86A20S */