pt3_tc.c

/*******************************************************************************
   earthsoft PT3 Linux driver

   This program is free software; you can redistribute it and/or modify it
   under the terms and conditions of the GNU General Public License,
   version 3, as published by the Free Software Foundation.

   This program is distributed in the hope 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.

   The full GNU General Public License is included in this distribution in
   the file called "COPYING".

 *******************************************************************************/

#include "version.h"

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/version.h>
#include <linux/mutex.h>
#include <linux/sched.h>

#if LINUX_VERSION_CODE < KERNEL_VERSION(3,4,0)
#include <asm/system.h>
#endif
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/uaccess.h>

#include "pt3_com.h"
#include "pt3_pci.h"
#include "pt3_tc.h"

static __u32
byten(const __u8 *data, __u32 n)
{
	__u32 value, i;
	
	value = 0;
	for (i = 0; i < n; i++) {
		value <<= 8;
		value |= data[i];
	}

	return value;
}

static __u16
byte2(const __u8 *data)
{
	return (__u16)byten(data, 2);
}

static __u32
byte3(const __u8 *data)
{
	return byten(data, 3);
}

__u8
pt3_tc_address(__u32 pin, int isdb, __u32 index)
{
	__u8 isdb2 = (isdb == PT3_ISDB_S) ? 1 : 0;
	return (__u8)(1 << 4 | pin << 2 | index << 1 | isdb2);
}

STATUS
pt3_tc_write(PT3_TC *tc, PT3_BUS *bus, __u8 addr, const __u8 *data, __u32 size)
{
	STATUS status;
	__u8 buf;
	PT3_BUS *p;

	p = bus ? bus : create_pt3_bus();
	if (p == NULL) {
		PT3_PRINTK(0, KERN_ERR, "out of memory.\n");
		return STATUS_OUT_OF_MEMORY_ERROR;
	}

	pt3_bus_start(p);
	buf = tc->tc_addr << 1;
	pt3_bus_write(p, &buf, 1);
	pt3_bus_write(p, &addr, 1);
	pt3_bus_write(p, data, size);
	pt3_bus_stop(p);

	if (bus) {
		status = STATUS_OK;
	} else {
		pt3_bus_end(p);
		status =  pt3_i2c_run(tc->i2c, p, NULL, 1);
	}

	if (!bus)
		free_pt3_bus(p);

	return status;
}

static STATUS
tc_read(PT3_TC *tc, PT3_BUS *bus, __u8 addr, __u8 *data, __u32 size)
{
	STATUS status;
	__u8 buf[size];
	__u32 i, rindex;
	PT3_BUS *p;

	p = bus ? bus : create_pt3_bus();
	if (p == NULL) {
		PT3_PRINTK(0, KERN_ERR, "out of memory.\n");
		return STATUS_OUT_OF_MEMORY_ERROR;
	}

	pt3_bus_start(p);
	buf[0] = tc->tc_addr << 1;
	pt3_bus_write(p, &buf[0], 1);
	pt3_bus_write(p, &addr, 1);

	pt3_bus_start(p);
	buf[0] = tc->tc_addr << 1 | 1;
	pt3_bus_write(p, &buf[0], 1);
	rindex = pt3_bus_read(p, &buf[0], size);
	pt3_bus_stop(p);

	if (bus) {
		status = STATUS_OK;
	} else {
		pt3_bus_end(p);
		status = pt3_i2c_run(tc->i2c, p, NULL, 1);
		for (i = 0; i < size; i++)
			data[i] = pt3_bus_data1(p, rindex + i);
	}

	if (!bus)
		free_pt3_bus(p);

	return status;
}

STATUS
pt3_tc_read_tuner_without_addr(PT3_TC *tc, PT3_BUS *bus, __u8 *data, __u32 size)
{
	STATUS status;
	__u8 buf[size];
	__u32 i;
	__u32 rindex;
	PT3_BUS *p;

	memset(buf, 0, size);

	p = bus ? bus : create_pt3_bus();
	if (p == NULL) {
		PT3_PRINTK(0, KERN_ERR, "out of memory.\n");
		return STATUS_OUT_OF_MEMORY_ERROR;
	}

	pt3_bus_start(p);
	buf[0] = tc->tc_addr << 1;
	pt3_bus_write(p, &buf[0], 1);
	buf[0] = TC_THROUGH;
	pt3_bus_write(p, &buf[0], 1);
	buf[0] = (tc->tuner_addr << 1) | 0x01;
	pt3_bus_write(p, &buf[0], 1);

	pt3_bus_start(p);
	buf[0] = (tc->tc_addr << 1) | 0x01;
	pt3_bus_write(p, &buf[0], 1);
	rindex = pt3_bus_read(p, &buf[0], size);
	pt3_bus_stop(p);

	if (bus) {
		status = STATUS_OK;
	} else {
		pt3_bus_end(p);
		status = pt3_i2c_run(tc->i2c, p, NULL, 1);
		for (i = 0; i < size; i++)
			data[i] = pt3_bus_data1(p, rindex + i);
	}

	if (!bus)
		free_pt3_bus(p);

#if 0
	PT3_PRINTK(7, KERN_DEBUG, "read_tuner_without tc_addr=0x%x tuner_addr=0x%x\n",
			tc->tc_addr, tc->tuner_addr);
#endif

	return status;
}

STATUS
pt3_tc_write_tuner_without_addr(PT3_TC *tc, PT3_BUS *bus, const __u8 *data, __u32 size)
{
	STATUS status;
	__u8 buf;
	PT3_BUS *p;

	p = bus ? bus : create_pt3_bus();
	if (p == NULL) {
		PT3_PRINTK(0, KERN_ERR, "out of memory.\n");
		return STATUS_OUT_OF_MEMORY_ERROR;
	}

	pt3_bus_start(p);
	buf = tc->tc_addr << 1;
	pt3_bus_write(p, &buf, 1);
	buf = TC_THROUGH;
	pt3_bus_write(p, &buf, 1);
	buf = tc->tuner_addr << 1;
	pt3_bus_write(p, &buf, 1);
	pt3_bus_write(p, data, size);
	pt3_bus_stop(p);

	if (bus)
		status = STATUS_OK;
	else {
		pt3_bus_end(p);
		status = pt3_i2c_run(tc->i2c, p, NULL, 1);
	}

	if (!bus)
		free_pt3_bus(p);

	return status;
}

STATUS
pt3_tc_read_tuner(PT3_TC *tc, PT3_BUS *bus, __u8 addr, __u8 *data, __u32 size)
{
	STATUS status;
	__u8 buf[size];
	__u32 i;
	size_t rindex;
	PT3_BUS *p;

	memset(buf, 0, size);

	p = bus ? bus : create_pt3_bus();
	if (p == NULL) {
		PT3_PRINTK(0, KERN_ERR, "out of memory.\n");
		return STATUS_OUT_OF_MEMORY_ERROR;
	}

	pt3_bus_start(p);
	buf[0] = tc->tc_addr << 1;
	pt3_bus_write(p, &buf[0], 1);
	buf[0] = TC_THROUGH;
	pt3_bus_write(p, &buf[0], 1);
	buf[0] = tc->tuner_addr << 1;
	pt3_bus_write(p, &buf[0], 1);
	pt3_bus_write(p, &addr, 1);

	pt3_bus_start(p);
	buf[0] = tc->tc_addr << 1;
	pt3_bus_write(p, &buf[0], 1);
	buf[0] = TC_THROUGH;
	pt3_bus_write(p, &buf[0], 1);
	buf[0] = (tc->tuner_addr << 1) | 1;
	pt3_bus_write(p, &buf[0], 1);

	pt3_bus_start(p);
	buf[0] = (tc->tc_addr << 1) | 1;
	pt3_bus_write(p, &buf[0], 1);
	rindex = pt3_bus_read(p, &buf[0], size);
	pt3_bus_stop(p);

	if (bus) {
		status = STATUS_OK;
	} else {
		pt3_bus_end(p);
		status = pt3_i2c_run(tc->i2c, p, NULL, 1);
		for (i = 0; i < size; i++)
			data[i] = pt3_bus_data1(p, rindex + i);
	}

	if (!bus)
		free_pt3_bus(p);

#if 0
	PT3_PRINTK(7, KERN_DEBUG, "read_tuner tc_addr=0x%x tuner_addr=0x%x\n",
			tc->tc_addr, tc->tuner_addr);
#endif

	return status;
}

STATUS
pt3_tc_write_tuner(PT3_TC *tc, PT3_BUS *bus, __u8 addr, const __u8 *data, __u32 size)
{
	STATUS status;
	__u8 buf;
	PT3_BUS *p;

	p = bus ? bus : create_pt3_bus();
	if (p == NULL) {
		PT3_PRINTK(0, KERN_ERR, "out of memory.\n");
		return STATUS_OUT_OF_MEMORY_ERROR;
	}

	pt3_bus_start(p);
	buf = tc->tc_addr << 1;
	pt3_bus_write(p, &buf, 1);
	buf = TC_THROUGH;
	pt3_bus_write(p, &buf, 1);
	buf = tc->tuner_addr << 1;
	pt3_bus_write(p, &buf, 1);
	pt3_bus_write(p, &addr, 1);
	pt3_bus_write(p, data, size);
	pt3_bus_stop(p);

	if (bus)
		status = STATUS_OK;
	else {
		pt3_bus_end(p);
		status = pt3_i2c_run(tc->i2c, p, NULL, 1);
	}

	if (!bus)
		free_pt3_bus(p);

	return status;
}

/* TC_S */

static STATUS
write_pskmsrst(PT3_TC *tc, PT3_BUS *bus)
{
	__u8 buf;

	buf = 0x01;
	return pt3_tc_write(tc, bus, 0x03, &buf, 1);
}

STATUS
pt3_tc_init_s(PT3_TC *tc, PT3_BUS *bus)
{
	STATUS status;
	__u8 buf;

	status = write_pskmsrst(tc, bus);
	if (status)
		return status;
	buf = 0x10;
	status = pt3_tc_write(tc, bus, 0x1e, &buf, 1);
	if (status)
		return status;
	
	return status;
}

/* TC_T */

static STATUS
write_imsrst(PT3_TC *tc, PT3_BUS *bus)
{
	__u8 buf;

	buf = 0x01 << 6;
	return pt3_tc_write(tc, bus, 0x01, &buf, 1);
}

STATUS
pt3_tc_init_t(PT3_TC *tc, PT3_BUS *bus)
{
	STATUS status;
	__u8 buf;

	status = write_imsrst(tc, bus);
	if (status)
		return status;
	buf = 0x10;
	status = pt3_tc_write(tc, bus, 0x1c, &buf, 1);
	if (status)
		return status;

	return status;
}

STATUS
pt3_tc_set_powers(PT3_TC *tc, PT3_BUS *bus, int tuner, int amp)
{
	STATUS status;
	__u8 tuner_power = tuner ? 0x03 : 0x02;
	__u8 amp_power = amp ? 0x03 : 0x02;

	__u8 data = (tuner_power << 6) | (0x01 << 4) | (amp_power << 2) | 0x01 << 0;

	status = pt3_tc_write(tc, bus, 0x1e, &data, 1);

	return status;
}

static __u8 agc_data_s[2] = { 0xb0, 0x30 };
STATUS
pt3_tc_set_agc_s(PT3_TC *tc, PT3_BUS *bus, PT3_TC_AGC agc)
{
	STATUS status;
	__u8 data;

	data = (agc == PT3_TC_AGC_AUTO) ? 0xff : 0x00;
	status = pt3_tc_write(tc, bus, 0x0a, &data, 1);
	if (status)
		return status;
	
	data = agc_data_s[pt3_tc_index(tc)];
	data |= (agc == PT3_TC_AGC_AUTO) ? 0x01 : 0x00;
	status = pt3_tc_write(tc, bus, 0x10, &data, 1);
	if (status)
		return status;

	data = (agc == PT3_TC_AGC_AUTO) ? 0x40 : 0x00;
	status = pt3_tc_write(tc, bus, 0x11, &data, 1);
	if (status)
		return status;

	status = write_pskmsrst(tc, bus);

	return status;
}

STATUS
pt3_tc_set_agc_t(PT3_TC *tc, PT3_BUS *bus, PT3_TC_AGC agc)
{
	STATUS status;
	__u8 data;

	data = (agc == PT3_TC_AGC_AUTO) ? 64 : 0;
	status = pt3_tc_write(tc, bus, 0x25, &data, 1);
	if (status)
		return status;

	data = 0x4c;
	data |= (agc == PT3_TC_AGC_AUTO) ? 0x00 : 0x01;
	status = pt3_tc_write(tc, bus, 0x23, &data, 1);
	if (status)
		return status;
	
	status = write_imsrst(tc, bus);

	return status;
}

STATUS
pt3_tc_set_sleep_s(PT3_TC *tc, PT3_BUS *bus, int sleep)
{
	STATUS status;
	__u8 buf;

	buf = sleep ? 1 : 0;
	status = pt3_tc_write(tc, bus, 0x17, &buf, 1);

	return status;
}

STATUS
pt3_tc_set_ts_pins_mode_s(PT3_TC *tc, PT3_BUS *bus, PT3_TS_PINS_MODE *mode)
{
	__u32 clock_data, byte, valid;
	__u8 data[2];
	STATUS status;

	clock_data = mode->clock_data;
	byte = mode->byte;
	valid = mode->valid;

	if (clock_data)
		clock_data++;
	if (byte)
		byte++;
	if (valid)
		valid++;

	data[0] = 0x15 | (valid << 6);
	data[1] = 0x04 | (clock_data << 4) | byte;

	status = pt3_tc_write(tc, bus, 0x1c, &data[0], 1);
	if (status)
		return status;
	status = pt3_tc_write(tc, bus, 0x1f, &data[1], 1);
	if (status)
		return status;

	return status;
}

STATUS
pt3_tc_set_ts_pins_mode_t(PT3_TC *tc, PT3_BUS *bus, PT3_TS_PINS_MODE *mode)
{
	__u32 clock_data, byte, valid;
	__u8 data;
	STATUS status;

	clock_data = mode->clock_data;
	byte = mode->byte;
	valid = mode->valid;

	if (clock_data)
		clock_data++;
	if (byte)
		byte++;
	if (valid)
		valid++;

	data = (__u8)(0x01 | (clock_data << 6) | (byte << 4) | (valid << 2)) ;
	status = pt3_tc_write(tc, bus, 0x1d, &data, 1);

	return status;
}

STATUS
pt3_tc_read_retryov_tmunvld_fulock(PT3_TC *tc, PT3_BUS *bus, int *retryov, int *tmunvld, int *fulock)
{
	STATUS status;
	__u8 data;

	status = tc_read(tc, bus, 0x80, &data, 1);
	if (status)
		return status;
	
	*retryov = BIT_SHIFT_MASK(data, 7, 1) ? 1 : 0;
	*tmunvld = BIT_SHIFT_MASK(data, 5, 1) ? 1 : 0;
	*fulock = BIT_SHIFT_MASK(data, 3, 1) ? 1 : 0;

	return status;
}

STATUS
pt3_tc_read_tmcc_s(PT3_TC *tc, PT3_BUS *bus, TMCC_S *tmcc)
{
	enum {
		BASE = 0xc5,
		SIZE = 0xe5 - BASE + 1
	};
	STATUS status;
	__u8 data[SIZE];
	__u32 i, byte_offset, bit_offset;

	status = tc_read(tc, bus, 0xc3, data, 1);
	if (status)
		return status;
	if (BIT_SHIFT_MASK(data[0], 4, 1))
		return STATUS_GENERAL_ERROR;
	
	status = tc_read(tc, bus, 0xce, data, 2);
	if (status)
		return status;
	if (byte2(data) == 0)
		return STATUS_GENERAL_ERROR;

	status = tc_read(tc, bus, 0xc3, data, 1);
	if (status)
		return status;
	tmcc->emergency = BIT_SHIFT_MASK(data[0], 2, 1);
	tmcc->extflag   = BIT_SHIFT_MASK(data[0], 1, 1);

	status = tc_read(tc, bus, 0xc5, data, SIZE);
	if (status)
		return status;
	tmcc->indicator = BIT_SHIFT_MASK(data[0xc5 - BASE], 3, 5);
	tmcc->uplink    = BIT_SHIFT_MASK(data[0xc7 - BASE], 0, 4);

	for (i = 0; i < 4; i++) {
		byte_offset = i / 2;
		bit_offset = (i % 2) ? 0 : 4;
		tmcc->mode[i] = BIT_SHIFT_MASK(data[0xc8 + byte_offset - BASE], bit_offset, 4);
		tmcc->slot[i] = BIT_SHIFT_MASK(data[0xca + i - BASE], 0, 6);
	}

	for (i = 0; i < 8; i++)
		tmcc->id[i] = byte2(data + 0xce + i * 2 - BASE);

	return status;
}

STATUS
pt3_tc_read_tmcc_t(PT3_TC *tc, PT3_BUS *bus, TMCC_T *tmcc)
{
	STATUS status;
	__u8 data[8];
	__u32 interleave0h, interleave0l, segment1h, segment1l;
	
	status = tc_read(tc, bus, 0xb2+0, &data[0], 4);
	if (status)
		return status;
	status = tc_read(tc, bus, 0xb2+4, &data[4], 4);
	if (status)
		return status;
	
	tmcc->system    = BIT_SHIFT_MASK(data[0], 6, 2);
	tmcc->indicator = BIT_SHIFT_MASK(data[0], 2, 4);
	tmcc->emergency = BIT_SHIFT_MASK(data[0], 1, 1);
	tmcc->partial   = BIT_SHIFT_MASK(data[0], 0, 1);

	tmcc->mode[0] = BIT_SHIFT_MASK(data[1], 5, 3);
	tmcc->mode[1] = BIT_SHIFT_MASK(data[2], 0, 3);
	tmcc->mode[2] = BIT_SHIFT_MASK(data[4], 3, 3);

	tmcc->rate[0] = BIT_SHIFT_MASK(data[1], 2, 3);
	tmcc->rate[1] = BIT_SHIFT_MASK(data[3], 5, 3);
	tmcc->rate[2] = BIT_SHIFT_MASK(data[4], 0, 3);

	interleave0h = BIT_SHIFT_MASK(data[1], 0, 2);
	interleave0l = BIT_SHIFT_MASK(data[2], 7, 1);

	tmcc->interleave[0] = interleave0h << 1 | interleave0l << 0;
	tmcc->interleave[1] = BIT_SHIFT_MASK(data[3], 2, 3);
	tmcc->interleave[2] = BIT_SHIFT_MASK(data[5], 5, 3);

	segment1h = BIT_SHIFT_MASK(data[3], 0, 2);
	segment1l = BIT_SHIFT_MASK(data[4], 6, 2);

	tmcc->segment[0] = BIT_SHIFT_MASK(data[2], 3, 4);
	tmcc->segment[1] = segment1h << 2 | segment1l << 0;
	tmcc->segment[2] = BIT_SHIFT_MASK(data[5], 1, 4);

	return status;
}

STATUS
pt3_tc_write_id_s(PT3_TC *tc, PT3_BUS *bus, __u16 id)
{
	STATUS status;
	__u8 data[2] = { id >> 8, (__u8)id };

	status = pt3_tc_write(tc, bus, 0x8f, data, sizeof(data));

	return status;
}

STATUS
pt3_tc_read_id_s(PT3_TC *tc, PT3_BUS *bus, __u16 *id)
{
	STATUS status;
	__u8 data[2];

	status = tc_read(tc, bus, 0xe6, data, sizeof(data));
	if (status)
		return status;

	*id = byte2(data);

	return status;
}

__u32
pt3_tc_index(PT3_TC *tc)
{
	return BIT_SHIFT_MASK(tc->tc_addr, 1, 1);
}

STATUS
pt3_tc_write_slptim(PT3_TC *tc, PT3_BUS *bus, int sleep)
{
	STATUS status;
	__u8 data;

	data = (1 << 7) | ((sleep ? 1 :0) <<4);
	status = pt3_tc_write(tc, bus, 0x03, &data, 1);

	return status;
}

STATUS
pt3_tc_read_agc_s(PT3_TC *tc, PT3_BUS *bus, __u8 *agc)
{
	STATUS status;
	__u8 data;

	status = tc_read(tc, bus, 0xba, &data, 1);
	if (status)
		return status;

	*agc = data & 0x7f;

	return status;
}

STATUS
pt3_tc_read_ifagc_dt(PT3_TC *tc, PT3_BUS *bus, __u8 *ifagc_dt)
{
	STATUS status;

	status = tc_read(tc, bus, 0x82, ifagc_dt, 1);
	if (status)
		return status;

	return status;
}

STATUS
pt3_tc_read_cn_s(PT3_TC *tc, PT3_BUS *bus, __u32 *cn)
{
	STATUS status;
	__u8 data[2];

	status = tc_read(tc, bus, 0xbc, data, sizeof(data));
	if (status)
		return status;

	*cn = byte2(data);

	return status;
}

STATUS
pt3_tc_read_cndat_t(PT3_TC *tc, PT3_BUS *bus, __u32 *cn)
{
	STATUS status;
	__u8 data[3];

	status = tc_read(tc, bus, 0x8b, data, sizeof(data));
	if (status)
		return status;

	*cn = byte3(data);

	return status;
}

PT3_TC *
create_pt3_tc(PT3_I2C *i2c, __u8 tc_addr, __u8 tuner_addr)
{
	PT3_TC *tc;

	tc = NULL;

	tc = pt3_vzalloc(sizeof(PT3_TC));
	if (tc == NULL)
		goto fail;

	tc->i2c = i2c;
	tc->tc_addr = tc_addr;
	tc->tuner_addr = tuner_addr;
	tc->master_clock_freq = 78;

	return tc;
fail:
	if (tc != NULL)
		vfree(tc);
	return NULL;
}

void
free_pt3_tc(PT3_TC *tc)
{
	vfree(tc);
}

__u32
time_diff(struct timeval *st, struct timeval *et)
{
	__u32 diff;
	diff = (et->tv_sec - st->tv_sec) * 1000000 + (et->tv_usec - st->tv_usec);
#if 0
	PT3_PRINTK(7, KERN_DEBUG, "time diff = %d\n", diff / 1000);
#endif
	return diff / 1000;
}