V4L/DVB (5955): Add support for DiB7070-based devices

This changeset adds support for DiB7070P-based devices by adding the
dib0070-driver and putting the appropriate layouts into
dib0700_devices.c

It also includes a new firmware for the dib0700 which is necessary to
make the DiB7070-boards work and it also should fix the i2c-problems
on some boards.

Signed-off-by: Jean-Philippe Sibers <jpsibers@dibcom.fr>
Signed-off-by: Patrick Boettcher <pboettcher@dibcom.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 580 insertions, 0 deletions

diff --git a/drivers/media/dvb/frontends/dib0070.c b/drivers/media/dvb/frontends/dib0070.c
new file mode 100644
index 00000000000..481eaa68415
--- /dev/null
+++ b/drivers/media/dvb/frontends/dib0070.c
@@ -0,0 +1,580 @@
+/*
+ * Linux-DVB Driver for DiBcom's DiB0070 base-band RF Tuner.
+ *
+ * Copyright (C) 2005-7 DiBcom (http://www.dibcom.fr/)
+ *
+ * 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.
+ */
+#include <linux/kernel.h>
+#include <linux/i2c.h>
+
+#include "dvb_frontend.h"
+
+#include "dib0070.h"
+#include "dibx000_common.h"
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "turn on debugging (default: 0)");
+
+#define dprintk(args...) do { if (debug) { printk(KERN_DEBUG "DiB0070: "); printk(args); printk("\n"); } } while (0)
+
+#define DIB0070_P1D  0x00
+#define DIB0070_P1F  0x01
+#define DIB0070_P1G  0x03
+#define DIB0070S_P1A 0x02
+
+struct dib0070_state {
+	struct i2c_adapter *i2c;
+	struct dvb_frontend *fe;
+	const struct dib0070_config *cfg;
+	u16 wbd_ff_offset;
+	u8 revision;
+};
+
+static uint16_t dib0070_read_reg(struct dib0070_state *state, u8 reg)
+{
+	u8 b[2];
+	struct i2c_msg msg[2] = {
+		{ .addr = state->cfg->i2c_address, .flags = 0,        .buf = &reg, .len = 1 },
+		{ .addr = state->cfg->i2c_address, .flags = I2C_M_RD, .buf = b,  .len = 2 },
+	};
+	if (i2c_transfer(state->i2c, msg, 2) != 2) {
+		printk(KERN_WARNING "DiB0070 I2C read failed\n");
+		return 0;
+	}
+	return (b[0] << 8) | b[1];
+}
+
+static int dib0070_write_reg(struct dib0070_state *state, u8 reg, u16 val)
+{
+	u8 b[3] = { reg, val >> 8, val & 0xff };
+	struct i2c_msg msg = { .addr = state->cfg->i2c_address, .flags = 0, .buf = b, .len = 3 };
+	if (i2c_transfer(state->i2c, &msg, 1) != 1) {
+		printk(KERN_WARNING "DiB0070 I2C write failed\n");
+		return -EREMOTEIO;
+	}
+	return 0;
+}
+
+#define HARD_RESET(state) do { if (state->cfg->reset) { state->cfg->reset(state->fe,1); msleep(10); state->cfg->reset(state->fe,0); msleep(10); } } while (0)
+
+static int dib0070_set_bandwidth(struct dvb_frontend *fe, struct dvb_frontend_parameters *ch)
+{
+	struct dib0070_state *st = fe->tuner_priv;
+	u16 tmp = 0;
+	tmp = dib0070_read_reg(st, 0x02) & 0x3fff;
+
+    switch(BANDWIDTH_TO_KHZ(ch->u.ofdm.bandwidth)) {
+		case  8000:
+			tmp |= (0 << 14);
+			break;
+		case  7000:
+			tmp |= (1 << 14);
+			break;
+	case  6000:
+			tmp |= (2 << 14);
+			break;
+	case 5000:
+		default:
+			tmp |= (3 << 14);
+			break;
+	}
+	dib0070_write_reg(st, 0x02, tmp);
+	return 0;
+}
+
+static void dib0070_captrim(struct dib0070_state *st, u16 LO4)
+{
+	int8_t captrim, fcaptrim, step_sign, step;
+	u16 adc, adc_diff = 3000;
+
+
+
+	dib0070_write_reg(st, 0x0f, 0xed10);
+	dib0070_write_reg(st, 0x17,    0x0034);
+
+	dib0070_write_reg(st, 0x18, 0x0032);
+	msleep(2);
+
+	step = captrim = fcaptrim = 64;
+
+	do {
+		step /= 2;
+		dib0070_write_reg(st, 0x14, LO4 | captrim);
+		msleep(1);
+		adc = dib0070_read_reg(st, 0x19);
+
+		dprintk( "CAPTRIM=%hd; ADC = %hd (ADC) & %dmV", captrim, adc, (u32) adc*(u32)1800/(u32)1024);
+
+		if (adc >= 400) {
+			adc -= 400;
+			step_sign = -1;
+		} else {
+			adc = 400 - adc;
+			step_sign = 1;
+		}
+
+		if (adc < adc_diff) {
+			dprintk( "CAPTRIM=%hd is closer to target (%hd/%hd)", captrim, adc, adc_diff);
+			adc_diff = adc;
+			fcaptrim = captrim;
+
+
+
+		}
+		captrim += (step_sign * step);
+	} while (step >= 1);
+
+	dib0070_write_reg(st, 0x14, LO4 | fcaptrim);
+	dib0070_write_reg(st, 0x18, 0x07ff);
+}
+
+#define LPF	100                       // define for the loop filter 100kHz by default 16-07-06
+#define LO4_SET_VCO_HFDIV(l, v, h)   l |= ((v) << 11) | ((h) << 7)
+#define LO4_SET_SD(l, s)             l |= ((s) << 14) | ((s) << 12)
+#define LO4_SET_CTRIM(l, c)          l |=  (c) << 10
+static int dib0070_tune_digital(struct dvb_frontend *fe, struct dvb_frontend_parameters *ch)
+{
+	struct dib0070_state *st = fe->tuner_priv;
+	u32 freq = ch->frequency/1000 + (BAND_OF_FREQUENCY(ch->frequency/1000) == BAND_VHF ? st->cfg->freq_offset_khz_vhf : st->cfg->freq_offset_khz_uhf);
+
+	u8 band = BAND_OF_FREQUENCY(freq), c;
+
+	/*******************VCO***********************************/
+	u16 lo4 = 0;
+
+	u8 REFDIV, PRESC = 2;
+	u32 FBDiv, Rest, FREF, VCOF_kHz;
+	u16 Num, Den;
+	/*******************FrontEnd******************************/
+	u16 value = 0;
+
+	dprintk( "Tuning for Band: %hd (%d kHz)", band, freq);
+
+
+	dib0070_write_reg(st, 0x17, 0x30);
+
+	dib0070_set_bandwidth(fe, ch);	/* c is used as HF */
+	switch (st->revision) {
+		case DIB0070S_P1A:
+			switch (band) {
+				case BAND_LBAND:
+					LO4_SET_VCO_HFDIV(lo4, 1, 1);
+					c = 2;
+					break;
+				case BAND_SBAND:
+					LO4_SET_VCO_HFDIV(lo4, 0, 0);
+					LO4_SET_CTRIM(lo4, 1);;
+					c = 1;
+					break;
+				case BAND_UHF:
+				default:
+					if (freq < 570000) {
+						LO4_SET_VCO_HFDIV(lo4, 1, 3);
+						PRESC = 6; c = 6;
+					} else if (freq < 680000) {
+						LO4_SET_VCO_HFDIV(lo4, 0, 2);
+						c = 4;
+					} else {
+						LO4_SET_VCO_HFDIV(lo4, 1, 2);
+						c = 4;
+					}
+					break;
+			} break;
+
+		case DIB0070_P1G:
+		case DIB0070_P1F:
+		default:
+			switch (band) {
+				case BAND_FM:
+						LO4_SET_VCO_HFDIV(lo4, 0, 7);
+						c = 24;
+					break;
+				case BAND_LBAND:
+						LO4_SET_VCO_HFDIV(lo4, 1, 0);
+						c = 2;
+					break;
+				case BAND_VHF:
+					if (freq < 180000) {
+						LO4_SET_VCO_HFDIV(lo4, 0, 3);
+						c = 16;
+					} else if (freq < 190000) {
+						LO4_SET_VCO_HFDIV(lo4, 1, 3);
+						c = 16;
+					} else {
+						LO4_SET_VCO_HFDIV(lo4, 0, 6);
+						c = 12;
+					}
+					break;
+
+				case BAND_UHF:
+				default:
+					if (freq < 570000) {
+						LO4_SET_VCO_HFDIV(lo4, 1, 5);
+						c = 6;
+					} else if (freq < 700000) {
+						LO4_SET_VCO_HFDIV(lo4, 0, 1);
+						c = 4;
+					} else {
+						LO4_SET_VCO_HFDIV(lo4, 1, 1);
+						c = 4;
+					}
+					break;
+			}
+		break;
+	}
+
+	dprintk( "HFDIV code: %hd", (lo4 >> 7) & 0xf);
+	dprintk( "VCO = %hd", (lo4 >> 11) & 0x3);
+
+
+	VCOF_kHz = (c * freq) * 2;
+	dprintk( "VCOF in kHz: %d ((%hd*%d) << 1))",VCOF_kHz, c, freq);
+
+	switch (band) {
+		case BAND_VHF:
+			REFDIV = (u8) ((st->cfg->clock_khz + 9999) / 10000);
+			break;
+		case BAND_FM:
+			REFDIV = (u8) ((st->cfg->clock_khz) / 1000);
+			break;
+		default:
+			REFDIV = (u8) ( st->cfg->clock_khz  / 10000);
+			break;
+	}
+	FREF = st->cfg->clock_khz / REFDIV;
+
+	dprintk( "REFDIV: %hd, FREF: %d", REFDIV, FREF);
+
+
+
+	switch (st->revision) {
+		case DIB0070S_P1A:
+			FBDiv = (VCOF_kHz / PRESC / FREF);
+			Rest  = (VCOF_kHz / PRESC) - FBDiv * FREF;
+			break;
+
+		case DIB0070_P1G:
+		case DIB0070_P1F:
+		default:
+			FBDiv = (freq / (FREF / 2));
+			Rest  = 2 * freq - FBDiv * FREF;
+			break;
+	}
+
+
+	     if (Rest < LPF)              Rest = 0;
+	else if (Rest < 2 * LPF)          Rest = 2 * LPF;
+	else if (Rest > (FREF - LPF))   { Rest = 0 ; FBDiv += 1; }
+	else if (Rest > (FREF - 2 * LPF)) Rest = FREF - 2 * LPF;
+	Rest = (Rest * 6528) / (FREF / 10);
+	dprintk( "FBDIV: %d, Rest: %d", FBDiv, Rest);
+
+	Num = 0;
+	Den = 1;
+
+	if (Rest > 0) {
+		LO4_SET_SD(lo4, 1);
+		Den = 255;
+		Num = (u16)Rest;
+	}
+	dprintk( "Num: %hd, Den: %hd, SD: %hd",Num, Den, (lo4 >> 12) & 0x1);
+
+
+
+	dib0070_write_reg(st, 0x11, (u16)FBDiv);
+
+
+	dib0070_write_reg(st, 0x12, (Den << 8) | REFDIV);
+
+
+	dib0070_write_reg(st, 0x13, Num);
+
+
+	value = 0x0040 | 0x0020 | 0x0010 | 0x0008 | 0x0002 | 0x0001;
+
+	switch (band) {
+		case BAND_UHF:   value |= 0x4000 | 0x0800; break;
+		case BAND_LBAND: value |= 0x2000 | 0x0400; break;
+		default:         value |= 0x8000 | 0x1000; break;
+	}
+	dib0070_write_reg(st, 0x20, value);
+
+	dib0070_captrim(st, lo4);
+	if (st->revision == DIB0070S_P1A) {
+		if (band == BAND_SBAND)
+			dib0070_write_reg(st, 0x15, 0x16e2);
+		else
+			dib0070_write_reg(st, 0x15, 0x56e5);
+	}
+
+
+
+	switch (band) {
+		case BAND_UHF:   value = 0x7c82; break;
+		case BAND_LBAND: value = 0x7c84; break;
+		default:         value = 0x7c81; break;
+	}
+	dib0070_write_reg(st, 0x0f, value);
+	dib0070_write_reg(st, 0x06, 0x3fff);
+
+	/* Front End */
+	/* c == TUNE, value = SWITCH */
+	c = 0;
+	value = 0;
+	switch (band) {
+		case BAND_FM:
+			c = 0; value = 1;
+		break;
+
+		case BAND_VHF:
+			if (freq <= 180000) c = 0;
+			else if (freq <= 188200) c = 1;
+			else if (freq <= 196400) c = 2;
+			else c = 3;
+			value = 1;
+		break;
+
+		case BAND_LBAND:
+			if (freq <= 1500000) c = 0;
+			else if (freq <= 1600000) c = 1;
+			else c = 3;
+		break;
+
+		case BAND_SBAND:
+			c = 7;
+			dib0070_write_reg(st, 0x1d,0xFFFF);
+		break;
+
+		case BAND_UHF:
+		default:
+			if (st->cfg->flip_chip) {
+				if (freq <= 550000) c = 0;
+				else if (freq <= 590000) c = 1;
+				else if (freq <= 666000) c = 3;
+				else c = 5;
+			} else {
+				if (freq <= 550000) c = 2;
+				else if (freq <= 650000) c = 3;
+				else if (freq <= 750000) c = 5;
+				else if (freq <= 850000) c = 6;
+				else c = 7;
+			}
+			value = 2;
+		break;
+	}
+
+	/* default: LNA_MATCH=7, BIAS=3 */
+	dib0070_write_reg(st, 0x07, (value << 11) | (7 << 8) | (c << 3) | (3 << 0));
+	dib0070_write_reg(st, 0x08, (c << 10) | (3 << 7) | (127));
+	dib0070_write_reg(st, 0x0d, 0x0d80);
+
+
+	dib0070_write_reg(st, 0x18,   0x07ff);
+	dib0070_write_reg(st, 0x17, 0x0033);
+
+	return 0;
+}
+
+static int dib0070_wakeup(struct dvb_frontend *fe)
+{
+	struct dib0070_state *st = fe->tuner_priv;
+	if (st->cfg->sleep)
+		st->cfg->sleep(fe, 0);
+	return 0;
+}
+
+static int dib0070_sleep(struct dvb_frontend *fe)
+{
+	struct dib0070_state *st = fe->tuner_priv;
+	if (st->cfg->sleep)
+		st->cfg->sleep(fe, 1);
+	return 0;
+}
+
+static u16 dib0070_p1f_defaults[] =
+
+{
+	7, 0x02,
+		0x0008,
+		0x0000,
+		0x0000,
+		0x0000,
+		0x0000,
+		0x0002,
+		0x0100,
+
+	3, 0x0d,
+		0x0d80,
+		0x0001,
+		0x0000,
+
+	4, 0x11,
+		0x0000,
+		0x0103,
+		0x0000,
+		0x0000,
+
+	3, 0x16,
+		0x0004 | 0x0040,
+		0x0030,
+		0x07ff,
+
+	6, 0x1b,
+		0x4112,
+		0xff00,
+		0xc07f,
+		0x0000,
+		0x0180,
+		0x4000 | 0x0800 | 0x0040 | 0x0020 | 0x0010 | 0x0008 | 0x0002 | 0x0001,
+
+	0,
+};
+
+static void dib0070_wbd_calibration(struct dib0070_state *state)
+{
+	u16 wbd_offs;
+	dib0070_write_reg(state, 0x0f, 0x6d81);
+	dib0070_write_reg(state, 0x20, 0x0040 | 0x0020 | 0x0010 | 0x0008 | 0x0002 | 0x0001);
+	msleep(9);
+	wbd_offs = dib0070_read_reg(state, 0x19);
+	dib0070_write_reg(state, 0x20, 0);
+	state->wbd_ff_offset = ((wbd_offs * 8 * 18 / 33 + 1) / 2);
+	dprintk( "WBDStart = %d (Vargen) - FF = %hd", (u32) wbd_offs * 1800/1024, state->wbd_ff_offset);
+}
+
+u16 dib0070_wbd_offset(struct dvb_frontend *fe)
+{
+	struct dib0070_state *st = fe->tuner_priv;
+	return st->wbd_ff_offset;
+}
+
+EXPORT_SYMBOL(dib0070_wbd_offset);
+static int dib0070_set_ctrl_lo5(struct dvb_frontend *fe, u8 vco_bias_trim, u8 hf_div_trim, u8 cp_current, u8 third_order_filt)
+{
+	struct dib0070_state *state = fe->tuner_priv;
+    u16 lo5 = (third_order_filt << 14) | (0 << 13) | (1 << 12) | (3 << 9) | (cp_current << 6) | (hf_div_trim << 3) | (vco_bias_trim << 0);
+	dprintk( "CTRL_LO5: 0x%x", lo5);
+	return dib0070_write_reg(state, 0x15, lo5);
+}
+
+#define pgm_read_word(w) (*w)
+static int dib0070_reset(struct dib0070_state *state)
+{
+	u16 l, r, *n;
+
+	HARD_RESET(state);
+
+
+#ifndef FORCE_SBAND_TUNER
+	if ((dib0070_read_reg(state, 0x22) >> 9) & 0x1)
+		state->revision = (dib0070_read_reg(state, 0x1f) >> 8) & 0xff;
+	else
+#endif
+		state->revision = DIB0070S_P1A;
+
+	/* P1F or not */
+	dprintk( "Revision: %x", state->revision);
+
+	if (state->revision == DIB0070_P1D) {
+		dprintk( "Error: this driver is not to be used meant for P1D or earlier");
+		return -EINVAL;
+	}
+
+	n = (u16 *) dib0070_p1f_defaults;
+	l = pgm_read_word(n++);
+	while (l) {
+		r = pgm_read_word(n++);
+		do {
+			dib0070_write_reg(state, (u8)r, pgm_read_word(n++));
+			r++;
+		} while (--l);
+		l = pgm_read_word(n++);
+	}
+
+	if (state->cfg->force_crystal_mode != 0)
+		r = state->cfg->force_crystal_mode;
+	else if (state->cfg->clock_khz >= 24000)
+		r = 1;
+	else
+		r = 2;
+
+	r |= state->cfg->osc_buffer_state << 3;
+
+	dib0070_write_reg(state, 0x10, r);
+	dib0070_write_reg(state, 0x1f, (1 << 8) | ((state->cfg->clock_pad_drive & 0xf) << 4));
+
+	if (state->cfg->invert_iq) {
+		r = dib0070_read_reg(state, 0x02) & 0xffdf;
+		dib0070_write_reg(state, 0x02, r | (1 << 5));
+	}
+
+
+	if (state->revision == DIB0070S_P1A)
+		dib0070_set_ctrl_lo5(state->fe, 4, 7, 3, 1);
+	else
+		dib0070_set_ctrl_lo5(state->fe, 4, 4, 2, 0);
+
+	dib0070_write_reg(state, 0x01, (54 << 9) | 0xc8);
+	return 0;
+}
+
+
+static int dib0070_release(struct dvb_frontend *fe)
+{
+	kfree(fe->tuner_priv);
+	fe->tuner_priv = NULL;
+	return 0;
+}
+
+static struct dvb_tuner_ops dib0070_ops = {
+	.info = {
+		.name           = "DiBcom DiB0070",
+		.frequency_min  =  45000000,
+		.frequency_max  = 860000000,
+		.frequency_step =      1000,
+	},
+	.release       = dib0070_release,
+
+	.init          = dib0070_wakeup,
+	.sleep         = dib0070_sleep,
+	.set_params    = dib0070_tune_digital,
+//	.get_frequency = dib0070_get_frequency,
+//	.get_bandwidth = dib0070_get_bandwidth
+};
+
+struct dvb_frontend * dib0070_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, struct dib0070_config *cfg)
+{
+	struct dib0070_state *state = kzalloc(sizeof(struct dib0070_state), GFP_KERNEL);
+	if (state == NULL)
+		return NULL;
+
+	state->cfg = cfg;
+	state->i2c = i2c;
+	state->fe  = fe;
+	fe->tuner_priv = state;
+
+	if (dib0070_reset(state) != 0)
+		goto free_mem;
+
+	dib0070_wbd_calibration(state);
+
+	printk(KERN_INFO "DiB0070: successfully identified\n");
+	memcpy(&fe->ops.tuner_ops, &dib0070_ops, sizeof(struct dvb_tuner_ops));
+
+	fe->tuner_priv = state;
+	return fe;
+
+free_mem:
+	kfree(state);
+	fe->tuner_priv = NULL;
+	return NULL;
+}
+EXPORT_SYMBOL(dib0070_attach);
+
+MODULE_AUTHOR("Patrick Boettcher <pboettcher@dibcom.fr>");
+MODULE_DESCRIPTION("Driver for the DiBcom 0070 base-band RF Tuner");
+MODULE_LICENSE("GPL");