or51132.c

linux-2.6.15.6

/*
 *    Support for OR51132 (pcHDTV HD-3000) - VSB/QAM
 *
 *    Copyright (C) 2005 Kirk Lapray <[e-mail]>
 *
 *    Based on code from Jack Kelliher ([e-mail])
 *                           Copyright (C) 2002 & pcHDTV, inc.
 *
 *    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.
 *
*/

/*
 * This driver needs two external firmware files. Please copy
 * "dvb-fe-or51132-vsb.fw" and "dvb-fe-or51132-qam.fw" to
 * /usr/lib/hotplug/firmware/ or /lib/firmware/
 * (depending on configuration of firmware hotplug).
 */
#define OR51132_VSB_FIRMWARE "dvb-fe-or51132-vsb.fw"
#define OR51132_QAM_FIRMWARE "dvb-fe-or51132-qam.fw"

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <asm/byteorder.h>

#include "dvb_frontend.h"
#include "dvb-pll.h"
#include "or51132.h"

static int debug;
#define dprintk(args...) \
	do { \
		if (debug) printk(KERN_DEBUG "or51132: " args); \
	} while (0)


struct or51132_state
{
	struct i2c_adapter* i2c;
	struct dvb_frontend_ops ops;

	/* Configuration settings */
	const struct or51132_config* config;

	struct dvb_frontend frontend;

	/* Demodulator private data */
	fe_modulation_t current_modulation;

	/* Tuner private data */
	u32 current_frequency;
};

static int i2c_writebytes (struct or51132_state* state, u8 reg, u8 *buf, int len)
{
	int err;
	struct i2c_msg msg;
	msg.addr  = reg;
	msg.flags = 0;
	msg.len   = len;
	msg.buf   = buf;

	if ((err = i2c_transfer(state->i2c, &msg, 1)) != 1) {
		printk(KERN_WARNING "or51132: i2c_writebytes error (addr %02x, err == %i)\n", reg, err);
		return -EREMOTEIO;
	}

	return 0;
}

static u8 i2c_readbytes (struct or51132_state* state, u8 reg, u8* buf, int len)
{
	int err;
	struct i2c_msg msg;
	msg.addr   = reg;
	msg.flags = I2C_M_RD;
	msg.len = len;
	msg.buf = buf;

	if ((err = i2c_transfer(state->i2c, &msg, 1)) != 1) {
		printk(KERN_WARNING "or51132: i2c_readbytes error (addr %02x, err == %i)\n", reg, err);
		return -EREMOTEIO;
	}

	return 0;
}

static int or51132_load_firmware (struct dvb_frontend* fe, const struct firmware *fw)
{
	struct or51132_state* state = fe->demodulator_priv;
	static u8 run_buf[] = {0x7F,0x01};
	static u8 get_ver_buf[] = {0x04,0x00,0x30,0x00,0x00};
	u8 rec_buf[14];
	u8 cmd_buf[14];
	u32 firmwareAsize, firmwareBsize;
	int i,ret;

	dprintk("Firmware is %Zd bytes\n",fw->size);

	/* Get size of firmware A and B */
	firmwareAsize = le32_to_cpu(*((u32*)fw->data));
	dprintk("FirmwareA is %i bytes\n",firmwareAsize);
	firmwareBsize = le32_to_cpu(*((u32*)(fw->data+4)));
	dprintk("FirmwareB is %i bytes\n",firmwareBsize);

	/* Upload firmware */
	if ((ret = i2c_writebytes(state,state->config->demod_address,
				 &fw->data[8],firmwareAsize))) {
		printk(KERN_WARNING "or51132: load_firmware error 1\n");
		return ret;
	}
	msleep(1); /* 1ms */
	if ((ret = i2c_writebytes(state,state->config->demod_address,
				 &fw->data[8+firmwareAsize],firmwareBsize))) {
		printk(KERN_WARNING "or51132: load_firmware error 2\n");
		return ret;
	}
	msleep(1); /* 1ms */

	if ((ret = i2c_writebytes(state,state->config->demod_address,
				 run_buf,2))) {
		printk(KERN_WARNING "or51132: load_firmware error 3\n");
		return ret;
	}

	/* Wait at least 5 msec */
	msleep(20); /* 10ms */

	if ((ret = i2c_writebytes(state,state->config->demod_address,
				 run_buf,2))) {
		printk(KERN_WARNING "or51132: load_firmware error 4\n");
		return ret;
	}

	/* 50ms for operation to begin */
	msleep(50);

	/* Read back ucode version to besure we loaded correctly and are really up and running */
	/* Get uCode version */
	cmd_buf[0] = 0x10;
	cmd_buf[1] = 0x10;
	cmd_buf[2] = 0x00;
	cmd_buf[3] = 0x00;
	msleep(20); /* 20ms */
	if ((ret = i2c_writebytes(state,state->config->demod_address,
				 cmd_buf,3))) {
		printk(KERN_WARNING "or51132: load_firmware error a\n");
		return ret;
	}

	cmd_buf[0] = 0x04;
	cmd_buf[1] = 0x17;
	cmd_buf[2] = 0x00;
	cmd_buf[3] = 0x00;
	msleep(20); /* 20ms */
	if ((ret = i2c_writebytes(state,state->config->demod_address,
				 cmd_buf,2))) {
		printk(KERN_WARNING "or51132: load_firmware error b\n");
		return ret;
	}

	cmd_buf[0] = 0x00;
	cmd_buf[1] = 0x00;
	cmd_buf[2] = 0x00;
	cmd_buf[3] = 0x00;
	msleep(20); /* 20ms */
	if ((ret = i2c_writebytes(state,state->config->demod_address,
				 cmd_buf,2))) {
		printk(KERN_WARNING "or51132: load_firmware error c\n");
		return ret;
	}

	for(i=0;i<4;i++) {
		msleep(20); /* 20ms */
		get_ver_buf[4] = i+1;
		if ((ret = i2c_readbytes(state,state->config->demod_address,
					&rec_buf[i*2],2))) {
			printk(KERN_WARNING
			       "or51132: load_firmware error d - %d\n",i);
			return ret;
		}
	}

	printk(KERN_WARNING
	       "or51132: Version: %02X%02X%02X%02X-%02X%02X%02X%02X (%02X%01X-%01X-%02X%01X-%01X)\n",
	       rec_buf[1],rec_buf[0],rec_buf[3],rec_buf[2],
	       rec_buf[5],rec_buf[4],rec_buf[7],rec_buf[6],
	       rec_buf[3],rec_buf[2]>>4,rec_buf[2]&0x0f,
	       rec_buf[5],rec_buf[4]>>4,rec_buf[4]&0x0f);

	cmd_buf[0] = 0x10;
	cmd_buf[1] = 0x00;
	cmd_buf[2] = 0x00;
	cmd_buf[3] = 0x00;
	msleep(20); /* 20ms */
	if ((ret = i2c_writebytes(state,state->config->demod_address,
				 cmd_buf,3))) {
		printk(KERN_WARNING "or51132: load_firmware error e\n");
		return ret;
	}
	return 0;
};

static int or51132_init(struct dvb_frontend* fe)
{
	return 0;
}

static int or51132_read_ber(struct dvb_frontend* fe, u32* ber)
{
	*ber = 0;
	return 0;
}

static int or51132_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
{
	*ucblocks = 0;
	return 0;
}

static int or51132_sleep(struct dvb_frontend* fe)
{
	return 0;
}

static int or51132_setmode(struct dvb_frontend* fe)
{
	struct or51132_state* state = fe->demodulator_priv;
	unsigned char cmd_buf[4];

	dprintk("setmode %d\n",(int)state->current_modulation);
	/* set operation mode in Receiver 1 register; */
	cmd_buf[0] = 0x04;
	cmd_buf[1] = 0x01;
	switch (state->current_modulation) {
	case QAM_256:
	case QAM_64:
	case QAM_AUTO:
		/* Auto-deinterleave; MPEG ser, MPEG2tr, phase noise-high*/
		cmd_buf[2] = 0x5F;
		break;
	case VSB_8:
		/* Auto CH, Auto NTSC rej, MPEGser, MPEG2tr, phase noise-high*/
		cmd_buf[2] = 0x50;
		break;
	default:
		printk("setmode:Modulation set to unsupported value\n");
	};
	cmd_buf[3] = 0x00;
	if (i2c_writebytes(state,state->config->demod_address,
			   cmd_buf,3)) {
		printk(KERN_WARNING "or51132: set_mode error 1\n");
		return -1;
	}
	dprintk("or51132: set #1 to %02x\n", cmd_buf[2]);

	/* Set operation mode in Receiver 6 register */
	cmd_buf[0] = 0x1C;
	switch (state->current_modulation) {
	case QAM_AUTO:
		/* REC MODE Normal Carrier Lock */
		cmd_buf[1] = 0x00;
		/* Channel MODE Auto QAM64/256 */
		cmd_buf[2] = 0x4f;
		break;
	case QAM_256:
		/* REC MODE Normal Carrier Lock */
		cmd_buf[1] = 0x00;
		/* Channel MODE QAM256 */
		cmd_buf[2] = 0x45;
		break;
	case QAM_64:
		/* REC MODE Normal Carrier Lock */
		cmd_buf[1] = 0x00;
		/* Channel MODE QAM64 */
		cmd_buf[2] = 0x43;
		break;
	case VSB_8:
		 /* REC MODE inv IF spectrum, Normal */
		cmd_buf[1] = 0x03;
		/* Channel MODE ATSC/VSB8 */
		cmd_buf[2] = 0x06;
		break;
	default:
		printk("setmode: Modulation set to unsupported value\n");
	};
	cmd_buf[3] = 0x00;
	msleep(20); /* 20ms */
	if (i2c_writebytes(state,state->config->demod_address,
			   cmd_buf,3)) {
		printk(KERN_WARNING "or51132: set_mode error 2\n");
		return -1;
	}
	dprintk("or51132: set #6 to 0x%02x%02x\n", cmd_buf[1], cmd_buf[2]);

	return 0;
}

static int or51132_set_parameters(struct dvb_frontend* fe,