Commit aa56cb9d authored by Markus Rechberger's avatar Markus Rechberger Committed by Mauro Carvalho Chehab
Browse files

V4L/DVB (9364): adding sharp s921 ISDB-T driver 



s921_module.c:
    wrapper for the dvb frontend interface
    s921_core.c:
    core s921 1seg ISDB-T driver, everything is set to auto as much as possible
    in order to not require certain parameters which currently cannot be passed
    to the ISDB-T chip.

    ISDB-T support can be tested using dvbscan, dvbstream/snoop and mplayer
    Tested 1seg H264/aac stream with this driver using a custom linux
ISDB-T player

Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 2c5aacc6

drivers/media/video/empia/sharp/Makefile

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Original line number Diff line number Diff line 
s921-objs := s921_module.o s921_core.o



obj-m += s921.o

drivers/media/video/empia/sharp/s921_core.c

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/*

 * Driver for Sharp s921 driver

 *

 * Copyright (C) 2008 Markus Rechberger <mrechberger@sundtek.de>

 *

 */





#include <linux/kernel.h>

#include <linux/module.h>

#include "s921_core.h"



static int s921_isdb_init(struct s921_isdb_t *dev);

static int s921_isdb_set_parameters(struct s921_isdb_t *dev, struct s921_isdb_t_transmission_mode_params *params);

static int s921_isdb_tune(struct s921_isdb_t *dev, struct s921_isdb_t_tune_params *params);

static int s921_isdb_get_status(struct s921_isdb_t *dev, void *data);



static u8 init_table[]={ 0x01, 0x40, 0x02, 0x00, 0x03, 0x40, 0x04, 0x01,

                         0x05, 0x00, 0x06, 0x00, 0x07, 0x00, 0x08, 0x00,

                         0x09, 0x00, 0x0a, 0x00, 0x0b, 0x5a, 0x0c, 0x00,

                         0x0d, 0x00, 0x0f, 0x00, 0x13, 0x1b, 0x14, 0x80,

                         0x15, 0x40, 0x17, 0x70, 0x18, 0x01, 0x19, 0x12,

                         0x1a, 0x01, 0x1b, 0x12, 0x1c, 0xa0, 0x1d, 0x00,

                         0x1e, 0x0a, 0x1f, 0x08, 0x20, 0x40, 0x21, 0xff,

                         0x22, 0x4c, 0x23, 0x4e, 0x24, 0x4c, 0x25, 0x00,

                         0x26, 0x00, 0x27, 0xf4, 0x28, 0x60, 0x29, 0x88,

                         0x2a, 0x40, 0x2b, 0x40, 0x2c, 0xff, 0x2d, 0x00,

                         0x2e, 0xff, 0x2f, 0x00, 0x30, 0x20, 0x31, 0x06,

                         0x32, 0x0c, 0x34, 0x0f, 0x37, 0xfe, 0x38, 0x00,

                         0x39, 0x63, 0x3a, 0x10, 0x3b, 0x10, 0x47, 0x00,

                         0x49, 0xe5, 0x4b, 0x00, 0x50, 0xc0, 0x52, 0x20,

                         0x54, 0x5a, 0x55, 0x5b, 0x56, 0x40, 0x57, 0x70,

                         0x5c, 0x50, 0x5d, 0x00, 0x62, 0x17, 0x63, 0x2f,

                         0x64, 0x6f, 0x68, 0x00, 0x69, 0x89, 0x6a, 0x00,

                         0x6b, 0x00, 0x6c, 0x00, 0x6d, 0x00, 0x6e, 0x00,

                         0x70, 0x00, 0x71, 0x00, 0x75, 0x00, 0x76, 0x30,

                         0x77, 0x01, 0xaf, 0x00, 0xb0, 0xa0, 0xb2, 0x3d,

                         0xb3, 0x25, 0xb4, 0x8b, 0xb5, 0x4b, 0xb6, 0x3f,

                         0xb7, 0xff, 0xb8, 0xff, 0xb9, 0xfc, 0xba, 0x00,

                         0xbb, 0x00, 0xbc, 0x00, 0xd0, 0x30, 0xe4, 0x84,

                         0xf0, 0x48, 0xf1, 0x19, 0xf2, 0x5a, 0xf3, 0x8e,

                         0xf4, 0x2d, 0xf5, 0x07, 0xf6, 0x5a, 0xf7, 0xba,

                         0xf8, 0xd7 };



static u8 c_table[]={ 0x58, 0x8a, 0x7b, 0x59, 0x8c, 0x7b, 0x5a, 0x8e, 0x5b,

                      0x5b, 0x90, 0x5b, 0x5c, 0x92, 0x5b, 0x5d, 0x94, 0x5b,

                      0x5e, 0x96, 0x5b, 0x5f, 0x98, 0x3b, 0x60, 0x9a, 0x3b,

                      0x61, 0x9c, 0x3b, 0x62, 0x9e, 0x3b, 0x63, 0xa0, 0x3b,

                      0x64, 0xa2, 0x1b, 0x65, 0xa4, 0x1b, 0x66, 0xa6, 0x1b,

                      0x67, 0xa8, 0x1b, 0x68, 0xaa, 0x1b, 0x69, 0xac, 0x1b,

                      0x6a, 0xae, 0x1b, 0x6b, 0xb0, 0x1b, 0x6c, 0xb2, 0x1b,

                      0x6d, 0xb4, 0xfb, 0x6e, 0xb6, 0xfb, 0x6f, 0xb8, 0xfb,

                      0x70, 0xba, 0xfb, 0x71, 0xbc, 0xdb, 0x72, 0xbe, 0xdb,

                      0x73, 0xc0, 0xdb, 0x74, 0xc2, 0xdb, 0x75, 0xc4, 0xdb,

                      0x76, 0xc6, 0xdb, 0x77, 0xc8, 0xbb, 0x78, 0xca, 0xbb,

                      0x79, 0xcc, 0xbb, 0x7a, 0xce, 0xbb, 0x7b, 0xd0, 0xbb,

                      0x7c, 0xd2, 0xbb, 0x7d, 0xd4, 0xbb, 0x7e, 0xd6, 0xbb,

                      0x7f, 0xd8, 0xbb, 0x80, 0xda, 0x9b, 0x81, 0xdc, 0x9b,

                      0x82, 0xde, 0x9b, 0x83, 0xe0, 0x9b, 0x84, 0xe2, 0x9b,

                      0x85, 0xe4, 0x9b, 0x86, 0xe6, 0x9b, 0x87, 0xe8, 0x9b,

                      0x88, 0xea, 0x9b, 0x89, 0xec, 0x9b };



int s921_isdb_cmd(struct s921_isdb_t *dev, u32 cmd, void *data) {

	switch(cmd) {

	case ISDB_T_CMD_INIT:

		s921_isdb_init(dev);

		break;

	case ISDB_T_CMD_SET_PARAM:

		s921_isdb_set_parameters(dev, data);

		break;

	case ISDB_T_CMD_TUNE:

		s921_isdb_tune(dev, data);

		break;

	case ISDB_T_CMD_GET_STATUS:

		s921_isdb_get_status(dev, data);

		break;

	default:

		printk("unhandled command\n");

		return -EINVAL;

	}

	return 0;

}



static int s921_isdb_init(struct s921_isdb_t *dev) {

	unsigned int i;

	unsigned int ret;

        printk("isdb_init\n");

	for (i = 0; i < sizeof(init_table); i+=2) {

		ret = dev->i2c_write(dev->priv_dev, init_table[i], init_table[i+1]);

		if (ret != 0) {

			printk("i2c write failed\n");

			return ret;

		}

	}

	return 0;

}



static int s921_isdb_set_parameters(struct s921_isdb_t *dev, struct s921_isdb_t_transmission_mode_params *params) {



	int ret;

	/* auto is sufficient for now, lateron this should be reflected in an extra interface */







	ret = dev->i2c_write(dev->priv_dev, 0xb0, 0xa0); //mod_b2);

	ret = dev->i2c_write(dev->priv_dev, 0xb2, 0x3d); //mod_b2);



	if (ret < 0)

		return -EINVAL;



	ret = dev->i2c_write(dev->priv_dev, 0xb3, 0x25); //mod_b3);

	if (ret < 0)

		return -EINVAL;



	ret = dev->i2c_write(dev->priv_dev, 0xb4, 0x8b); //mod_b4);

	if (ret < 0)

		return -EINVAL;



	ret = dev->i2c_write(dev->priv_dev, 0xb5, 0x4b); //mod_b5);

	if (ret < 0)

		return -EINVAL;



	ret = dev->i2c_write(dev->priv_dev, 0xb6, 0x3f); //mod_b6);

	if (ret < 0)

		return -EINVAL;



	ret = dev->i2c_write(dev->priv_dev, 0xb7, 0x3f); //mod_b7);

	if (ret < 0)

		return -EINVAL;



	return E_OK;

}



static int s921_isdb_tune(struct s921_isdb_t *dev, struct s921_isdb_t_tune_params *params) {



	int ret;

	int index;



	index = (params->frequency - 473143000)/6000000;



	if (index > 48) {

		return -EINVAL;

	}



	dev->i2c_write(dev->priv_dev, 0x47, 0x60);



	ret = dev->i2c_write(dev->priv_dev, 0x68, 0x00);

	if (ret < 0)

		return -EINVAL;



	ret = dev->i2c_write(dev->priv_dev, 0x69, 0x89);

	if (ret < 0)

		return -EINVAL;



	ret = dev->i2c_write(dev->priv_dev, 0xf0, 0x48);

	if (ret < 0)

		return -EINVAL;



	ret = dev->i2c_write(dev->priv_dev, 0xf1, 0x19);

	if (ret < 0)

		return -EINVAL;



	ret = dev->i2c_write(dev->priv_dev, 0xf2, c_table[index*3]);

	if (ret < 0)

		return -EINVAL;



	ret = dev->i2c_write(dev->priv_dev, 0xf3, c_table[index*3+1]);

	if (ret < 0)

		return -EINVAL;



	ret = dev->i2c_write(dev->priv_dev, 0xf4, c_table[index*3+2]);

	if (ret < 0)

		return -EINVAL;



	ret = dev->i2c_write(dev->priv_dev, 0xf5, 0xae);

	if (ret < 0)

		return -EINVAL;



	ret = dev->i2c_write(dev->priv_dev, 0xf6, 0xb7);

	if (ret < 0)

		return -EINVAL;



	ret = dev->i2c_write(dev->priv_dev, 0xf7, 0xba);

	if (ret < 0)

		return -EINVAL;



	ret = dev->i2c_write(dev->priv_dev, 0xf8, 0xd7);

	if (ret < 0)

		return -EINVAL;



	ret = dev->i2c_write(dev->priv_dev, 0x68, 0x0a);

	if (ret < 0)

		return -EINVAL;



	ret = dev->i2c_write(dev->priv_dev, 0x69, 0x09);

	if (ret < 0)

		return -EINVAL;



	dev->i2c_write(dev->priv_dev, 0x01, 0x40);

	return 0;

}



static int s921_isdb_get_status(struct s921_isdb_t *dev, void *data) {

	unsigned int *ret = (unsigned int*)data;

	u8 ifagc_dt;

	u8 rfagc_dt;



	mdelay(10);

	ifagc_dt = dev->i2c_read(dev->priv_dev, 0x81);

	rfagc_dt = dev->i2c_read(dev->priv_dev, 0x82);

	if (rfagc_dt == 0x40) {

		*ret = 1;

	}

	return 0;

}

drivers/media/video/empia/sharp/s921_core.h

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#ifndef _S921_CORE_H

#define _S921_CORE_H

//#define u8 unsigned int

//#define u32 unsigned int







//#define EINVAL -1

#define E_OK 0



struct s921_isdb_t {

	void *priv_dev;

	int (*i2c_write)(void *dev, u8 reg, u8 val);

	int (*i2c_read)(void *dev, u8 reg);

};



#define ISDB_T_CMD_INIT       0

#define ISDB_T_CMD_SET_PARAM  1

#define ISDB_T_CMD_TUNE       2

#define ISDB_T_CMD_GET_STATUS 3



struct s921_isdb_t_tune_params {

	u32 frequency;

};



struct s921_isdb_t_status {

};



struct s921_isdb_t_transmission_mode_params {

	u8 mode;

	u8 layer_a_mode;

#define ISDB_T_LA_MODE_1 0

#define ISDB_T_LA_MODE_2 1

#define ISDB_T_LA_MODE_3 2

	u8 layer_a_carrier_modulation;

#define ISDB_T_LA_CM_DQPSK 0

#define ISDB_T_LA_CM_QPSK  1

#define ISDB_T_LA_CM_16QAM 2

#define ISDB_T_LA_CM_64QAM 3

#define ISDB_T_LA_CM_NOLAYER 4

	u8 layer_a_code_rate;

#define ISDB_T_LA_CR_1_2   0

#define ISDB_T_LA_CR_2_3   1

#define ISDB_T_LA_CR_3_4   2

#define ISDB_T_LA_CR_5_6   4

#define ISDB_T_LA_CR_7_8   8

#define ISDB_T_LA_CR_NOLAYER   16

	u8 layer_a_time_interleave;

#define ISDB_T_LA_TI_0  0

#define ISDB_T_LA_TI_1  1

#define ISDB_T_LA_TI_2  2

#define ISDB_T_LA_TI_4  4

#define ISDB_T_LA_TI_8  8

#define ISDB_T_LA_TI_16 16

#define ISDB_T_LA_TI_32 32

	u8 layer_a_nseg;



	u8 layer_b_mode;

#define ISDB_T_LB_MODE_1 0

#define ISDB_T_LB_MODE_2 1

#define ISDB_T_LB_MODE_3 2

	u8 layer_b_carrier_modulation;

#define ISDB_T_LB_CM_DQPSK 0

#define ISDB_T_LB_CM_QPSK  1

#define ISDB_T_LB_CM_16QAM 2

#define ISDB_T_LB_CM_64QAM 3

#define ISDB_T_LB_CM_NOLAYER 4

	u8 layer_b_code_rate;

#define ISDB_T_LB_CR_1_2   0

#define ISDB_T_LB_CR_2_3   1

#define ISDB_T_LB_CR_3_4   2

#define ISDB_T_LB_CR_5_6   4

#define ISDB_T_LB_CR_7_8   8

#define ISDB_T_LB_CR_NOLAYER   16

	u8 layer_b_time_interleave;

#define ISDB_T_LB_TI_0  0

#define ISDB_T_LB_TI_1  1

#define ISDB_T_LB_TI_2  2

#define ISDB_T_LB_TI_4  4

#define ISDB_T_LB_TI_8  8

#define ISDB_T_LB_TI_16 16

#define ISDB_T_LB_TI_32 32

	u8 layer_b_nseg;



	u8 layer_c_mode;

#define ISDB_T_LC_MODE_1 0

#define ISDB_T_LC_MODE_2 1

#define ISDB_T_LC_MODE_3 2

	u8 layer_c_carrier_modulation;

#define ISDB_T_LC_CM_DQPSK 0

#define ISDB_T_LC_CM_QPSK  1

#define ISDB_T_LC_CM_16QAM 2

#define ISDB_T_LC_CM_64QAM 3

#define ISDB_T_LC_CM_NOLAYER 4

	u8 layer_c_code_rate;

#define ISDB_T_LC_CR_1_2   0

#define ISDB_T_LC_CR_2_3   1

#define ISDB_T_LC_CR_3_4   2

#define ISDB_T_LC_CR_5_6   4

#define ISDB_T_LC_CR_7_8   8

#define ISDB_T_LC_CR_NOLAYER   16

	u8 layer_c_time_interleave;

#define ISDB_T_LC_TI_0  0

#define ISDB_T_LC_TI_1  1

#define ISDB_T_LC_TI_2  2

#define ISDB_T_LC_TI_4  4

#define ISDB_T_LC_TI_8  8

#define ISDB_T_LC_TI_16 16

#define ISDB_T_LC_TI_32 32

	u8 layer_c_nseg;

};



int s921_isdb_cmd(struct s921_isdb_t *dev, u32 cmd, void *data);

#endif

drivers/media/video/empia/sharp/s921_module.c

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/*

 * Driver for Sharp s921 driver

 *

 * Copyright (C) 2008 Markus Rechberger <mrechberger@sundtek.de>

 *

 * All rights reserved.

 *

 */



#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/delay.h>

#include "dvb_frontend.h"

#include "s921_module.h"

#include "s921_core.h"



static  unsigned int debug = 0;

module_param(debug, int, 0644);

MODULE_PARM_DESC(debug,"s921 debugging (default off)");



#define dprintk(fmt, args...) if (debug) do {\

			printk("s921 debug: " fmt, ##args); } while (0)



struct s921_state

{

        struct dvb_frontend frontend;

        fe_modulation_t current_modulation;

        __u32 snr;

        __u32 current_frequency;

	__u8 addr;

	struct s921_isdb_t dev;

	struct i2c_adapter *i2c;

};



static int s921_set_parameters(struct dvb_frontend *fe, struct dvb_frontend_parameters *param) {

	struct s921_state *state = (struct s921_state *)fe->demodulator_priv;

	struct s921_isdb_t_transmission_mode_params params;

	struct s921_isdb_t_tune_params tune_params;



	tune_params.frequency = param->frequency;

	s921_isdb_cmd(&state->dev, ISDB_T_CMD_SET_PARAM, &params);

	s921_isdb_cmd(&state->dev, ISDB_T_CMD_TUNE, &tune_params);

	mdelay(100);

	return 0;

}



static int s921_init(struct dvb_frontend *fe) {

	printk("s921 init\n");

        return 0;

}



static int s921_sleep(struct dvb_frontend *fe) {

	printk("s921 sleep\n");

	return 0;

}



static int s921_read_status(struct dvb_frontend *fe, fe_status_t *status)

{

	struct s921_state *state = (struct s921_state *)fe->demodulator_priv;

	unsigned int ret;

	mdelay(5);

	s921_isdb_cmd(&state->dev, ISDB_T_CMD_GET_STATUS, &ret);

	*status = 0;



	printk("status: %02x\n", ret);

	if (ret == 1) {

		*status |= FE_HAS_CARRIER;

		*status |= FE_HAS_VITERBI;

		*status |= FE_HAS_LOCK;

		*status |= FE_HAS_SYNC;

		*status |= FE_HAS_SIGNAL;

	}



	return 0;

}



static int s921_read_ber(struct dvb_frontend *fe, __u32 *ber)

{

	dprintk("read ber\n");

	return 0;

}



static int s921_read_snr(struct dvb_frontend *fe, __u16 *snr)

{

	dprintk("read snr\n");

	return 0;

}



static int s921_read_ucblocks(struct dvb_frontend *fe, __u32 *ucblocks)

{

	dprintk("read ucblocks\n");

	return 0;

}



static void s921_release(struct dvb_frontend *fe)

{

	struct s921_state *state = (struct s921_state *)fe->demodulator_priv;

	kfree(state);

}



static struct dvb_frontend_ops demod_s921={

	.info = {

		.name			= "SHARP S921",

		.type			= FE_OFDM,

		.frequency_min		= 473143000,

		.frequency_max		= 767143000,

		.frequency_stepsize	=   6000000,

		.frequency_tolerance	= 0,

		.caps = 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_QAM_AUTO |

			FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO |

			FE_CAN_HIERARCHY_AUTO | FE_CAN_RECOVER |

			FE_CAN_MUTE_TS

	},

	.init = s921_init,

	.sleep = s921_sleep,

	.set_frontend = s921_set_parameters,

	.read_snr = s921_read_snr,

	.read_ber = s921_read_ber,

	.read_status = s921_read_status,

	.read_ucblocks = s921_read_ucblocks,

	.release = s921_release,

};



static int s921_write(void *dev, u8 reg, u8 val) {

	struct s921_state *state = dev;

	char buf[2]={reg,val};

        int err;

	struct i2c_msg i2cmsgs = {

		.addr = state->addr,

		.flags = 0,

		.len = 2,

		.buf = buf

	};



	if((err = i2c_transfer(state->i2c, &i2cmsgs, 1))<0) {

		printk("%s i2c_transfer error %d\n", __FUNCTION__, err);

                if (err < 0)

                        return err;

                else

                        return -EREMOTEIO;

        }



	return 0;

}



static int s921_read(void *dev, u8 reg) {

	struct s921_state *state = dev;

	u8 b1;

	int ret;

	struct i2c_msg msg[2] = { { .addr = state->addr,

				    .flags = 0,

				    .buf = &reg, .len = 1 },

				  { .addr = state->addr,

				    .flags = I2C_M_RD,

				    .buf = &b1, .len = 1 } };



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

	if (ret != 2)

		return ret;

	return b1;

}



struct dvb_frontend* s921_attach(const struct s921_config *config,

					   struct i2c_adapter *i2c)

{



	struct s921_state *state;

	state = kzalloc(sizeof(struct s921_state), GFP_KERNEL);

	memset(state, 0x0, sizeof(struct s921_state));



	state->addr = config->i2c_address;

	state->i2c = i2c;

	state->dev.i2c_write = &s921_write;

	state->dev.i2c_read = &s921_read;

	state->dev.priv_dev = state;



	s921_isdb_cmd(&state->dev, ISDB_T_CMD_INIT, NULL);



	memcpy(&state->frontend.ops, &demod_s921, sizeof(struct dvb_frontend_ops));

	state->frontend.demodulator_priv = state;

	return &state->frontend;

}



EXPORT_SYMBOL_GPL(s921_attach);

MODULE_AUTHOR("Markus Rechberger <mrechberger@empiatech.com>");

MODULE_DESCRIPTION("Sharp S921 ISDB-T 1Seg");

MODULE_LICENSE("GPL");

drivers/media/video/empia/sharp/s921_module.h

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Original line number Diff line number Diff line 
/*

 *  Driver for DVB-T s921 demodulator

 *

 *  Copyright (C) 2008 Markus Rechberger <mrechberger@sundtek.de>

 *

 *  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.=

 */



#ifndef S921_MODULE_H

#define S921_MODULE_H



#include <linux/dvb/frontend.h>

#include "s921_core.h"



int s921_isdb_init(struct s921_isdb_t *dev);

int s921_isdb_cmd(struct s921_isdb_t *dev, u32 cmd, void *data);



struct s921_config

{

	/* demodulator's I2C address */

	u8 i2c_address;

};



#if defined(CONFIG_DVB_S921) || (defined(CONFIG_DVB_S921_MODULE) && defined(MODULE))

extern struct dvb_frontend* s921_attach(const struct s921_config *config,

					   struct i2c_adapter *i2c);

#else

static inline struct dvb_frontend* s921_attach(const struct s921_config *config,

					   struct i2c_adapter *i2c)

{

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

	return NULL;

}

#endif /* CONFIG_DVB_S921 */



#endif /* S921_H */