diff options
Diffstat (limited to 'drivers/media/dvb/frontends/zl10036.c')
| -rw-r--r-- | drivers/media/dvb/frontends/zl10036.c | 520 |
1 files changed, 0 insertions, 520 deletions
diff --git a/drivers/media/dvb/frontends/zl10036.c b/drivers/media/dvb/frontends/zl10036.c deleted file mode 100644 index 0903d461b8f..00000000000 --- a/drivers/media/dvb/frontends/zl10036.c +++ /dev/null @@ -1,520 +0,0 @@ -/** - * Driver for Zarlink zl10036 DVB-S silicon tuner - * - * Copyright (C) 2006 Tino Reichardt - * Copyright (C) 2007-2009 Matthias Schwarzott <zzam@gentoo.de> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License Version 2, as - * published by the Free Software Foundation. - * - * 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. - * - ** - * The data sheet for this tuner can be found at: - * http://www.mcmilk.de/projects/dvb-card/datasheets/ZL10036.pdf - * - * This one is working: (at my Avermedia DVB-S Pro) - * - zl10036 (40pin, FTA) - * - * A driver for zl10038 should be very similar. - */ - -#include <linux/module.h> -#include <linux/dvb/frontend.h> -#include <linux/slab.h> -#include <linux/types.h> - -#include "zl10036.h" - -static int zl10036_debug; -#define dprintk(level, args...) \ - do { if (zl10036_debug & level) printk(KERN_DEBUG "zl10036: " args); \ - } while (0) - -#define deb_info(args...) dprintk(0x01, args) -#define deb_i2c(args...) dprintk(0x02, args) - -struct zl10036_state { - struct i2c_adapter *i2c; - const struct zl10036_config *config; - u32 frequency; - u8 br, bf; -}; - - -/* This driver assumes the tuner is driven by a 10.111MHz Cristal */ -#define _XTAL 10111 - -/* Some of the possible dividers: - * 64, (write 0x05 to reg), freq step size 158kHz - * 10, (write 0x0a to reg), freq step size 1.011kHz (used here) - * 5, (write 0x09 to reg), freq step size 2.022kHz - */ - -#define _RDIV 10 -#define _RDIV_REG 0x0a -#define _FR (_XTAL/_RDIV) - -#define STATUS_POR 0x80 /* Power on Reset */ -#define STATUS_FL 0x40 /* Frequency & Phase Lock */ - -/* read/write for zl10036 and zl10038 */ - -static int zl10036_read_status_reg(struct zl10036_state *state) -{ - u8 status; - struct i2c_msg msg[1] = { - { .addr = state->config->tuner_address, .flags = I2C_M_RD, - .buf = &status, .len = sizeof(status) }, - }; - - if (i2c_transfer(state->i2c, msg, 1) != 1) { - printk(KERN_ERR "%s: i2c read failed at addr=%02x\n", - __func__, state->config->tuner_address); - return -EIO; - } - - deb_i2c("R(status): %02x [FL=%d]\n", status, - (status & STATUS_FL) ? 1 : 0); - if (status & STATUS_POR) - deb_info("%s: Power-On-Reset bit enabled - " - "need to initialize the tuner\n", __func__); - - return status; -} - -static int zl10036_write(struct zl10036_state *state, u8 buf[], u8 count) -{ - struct i2c_msg msg[1] = { - { .addr = state->config->tuner_address, .flags = 0, - .buf = buf, .len = count }, - }; - u8 reg = 0; - int ret; - - if (zl10036_debug & 0x02) { - /* every 8bit-value satisifes this! - * so only check for debug log */ - if ((buf[0] & 0x80) == 0x00) - reg = 2; - else if ((buf[0] & 0xc0) == 0x80) - reg = 4; - else if ((buf[0] & 0xf0) == 0xc0) - reg = 6; - else if ((buf[0] & 0xf0) == 0xd0) - reg = 8; - else if ((buf[0] & 0xf0) == 0xe0) - reg = 10; - else if ((buf[0] & 0xf0) == 0xf0) - reg = 12; - - deb_i2c("W(%d):", reg); - { - int i; - for (i = 0; i < count; i++) - printk(KERN_CONT " %02x", buf[i]); - printk(KERN_CONT "\n"); - } - } - - ret = i2c_transfer(state->i2c, msg, 1); - if (ret != 1) { - printk(KERN_ERR "%s: i2c error, ret=%d\n", __func__, ret); - return -EIO; - } - - return 0; -} - -static int zl10036_release(struct dvb_frontend *fe) -{ - struct zl10036_state *state = fe->tuner_priv; - - fe->tuner_priv = NULL; - kfree(state); - - return 0; -} - -static int zl10036_sleep(struct dvb_frontend *fe) -{ - struct zl10036_state *state = fe->tuner_priv; - u8 buf[] = { 0xf0, 0x80 }; /* regs 12/13 */ - int ret; - - deb_info("%s\n", __func__); - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */ - - ret = zl10036_write(state, buf, sizeof(buf)); - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */ - - return ret; -} - -/** - * register map of the ZL10036/ZL10038 - * - * reg[default] content - * 2[0x00]: 0 | N14 | N13 | N12 | N11 | N10 | N9 | N8 - * 3[0x00]: N7 | N6 | N5 | N4 | N3 | N2 | N1 | N0 - * 4[0x80]: 1 | 0 | RFG | BA1 | BA0 | BG1 | BG0 | LEN - * 5[0x00]: P0 | C1 | C0 | R4 | R3 | R2 | R1 | R0 - * 6[0xc0]: 1 | 1 | 0 | 0 | RSD | 0 | 0 | 0 - * 7[0x20]: P1 | BF6 | BF5 | BF4 | BF3 | BF2 | BF1 | 0 - * 8[0xdb]: 1 | 1 | 0 | 1 | 0 | CC | 1 | 1 - * 9[0x30]: VSD | V2 | V1 | V0 | S3 | S2 | S1 | S0 - * 10[0xe1]: 1 | 1 | 1 | 0 | 0 | LS2 | LS1 | LS0 - * 11[0xf5]: WS | WH2 | WH1 | WH0 | WL2 | WL1 | WL0 | WRE - * 12[0xf0]: 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 - * 13[0x28]: PD | BR4 | BR3 | BR2 | BR1 | BR0 | CLR | TL - */ - -static int zl10036_set_frequency(struct zl10036_state *state, u32 frequency) -{ - u8 buf[2]; - u32 div, foffset; - - div = (frequency + _FR/2) / _FR; - state->frequency = div * _FR; - - foffset = frequency - state->frequency; - - buf[0] = (div >> 8) & 0x7f; - buf[1] = (div >> 0) & 0xff; - - deb_info("%s: ftodo=%u fpriv=%u ferr=%d div=%u\n", __func__, - frequency, state->frequency, foffset, div); - - return zl10036_write(state, buf, sizeof(buf)); -} - -static int zl10036_set_bandwidth(struct zl10036_state *state, u32 fbw) -{ - /* fbw is measured in kHz */ - u8 br, bf; - int ret; - u8 buf_bf[] = { - 0xc0, 0x00, /* 6/7: rsd=0 bf=0 */ - }; - u8 buf_br[] = { - 0xf0, 0x00, /* 12/13: br=0xa clr=0 tl=0*/ - }; - u8 zl10036_rsd_off[] = { 0xc8 }; /* set RSD=1 */ - - /* ensure correct values */ - if (fbw > 35000) - fbw = 35000; - if (fbw < 8000) - fbw = 8000; - -#define _BR_MAXIMUM (_XTAL/575) /* _XTAL / 575kHz = 17 */ - - /* <= 28,82 MHz */ - if (fbw <= 28820) { - br = _BR_MAXIMUM; - } else { - /** - * f(bw)=34,6MHz f(xtal)=10.111MHz - * br = (10111/34600) * 63 * 1/K = 14; - */ - br = ((_XTAL * 21 * 1000) / (fbw * 419)); - } - - /* ensure correct values */ - if (br < 4) - br = 4; - if (br > _BR_MAXIMUM) - br = _BR_MAXIMUM; - - /* - * k = 1.257 - * bf = fbw/_XTAL * br * k - 1 */ - - bf = (fbw * br * 1257) / (_XTAL * 1000) - 1; - - /* ensure correct values */ - if (bf > 62) - bf = 62; - - buf_bf[1] = (bf << 1) & 0x7e; - buf_br[1] = (br << 2) & 0x7c; - deb_info("%s: BW=%d br=%u bf=%u\n", __func__, fbw, br, bf); - - if (br != state->br) { - ret = zl10036_write(state, buf_br, sizeof(buf_br)); - if (ret < 0) - return ret; - } - - if (bf != state->bf) { - ret = zl10036_write(state, buf_bf, sizeof(buf_bf)); - if (ret < 0) - return ret; - - /* time = br/(32* fxtal) */ - /* minimal sleep time to be calculated - * maximum br is 63 -> max time = 2 /10 MHz = 2e-7 */ - msleep(1); - - ret = zl10036_write(state, zl10036_rsd_off, - sizeof(zl10036_rsd_off)); - if (ret < 0) - return ret; - } - - state->br = br; - state->bf = bf; - - return 0; -} - -static int zl10036_set_gain_params(struct zl10036_state *state, - int c) -{ - u8 buf[2]; - u8 rfg, ba, bg; - - /* default values */ - rfg = 0; /* enable when using an lna */ - ba = 1; - bg = 1; - - /* reg 4 */ - buf[0] = 0x80 | ((rfg << 5) & 0x20) - | ((ba << 3) & 0x18) | ((bg << 1) & 0x06); - - if (!state->config->rf_loop_enable) - buf[0] |= 0x01; - - /* P0=0 */ - buf[1] = _RDIV_REG | ((c << 5) & 0x60); - - deb_info("%s: c=%u rfg=%u ba=%u bg=%u\n", __func__, c, rfg, ba, bg); - return zl10036_write(state, buf, sizeof(buf)); -} - -static int zl10036_set_params(struct dvb_frontend *fe) -{ - struct dtv_frontend_properties *p = &fe->dtv_property_cache; - struct zl10036_state *state = fe->tuner_priv; - int ret = 0; - u32 frequency = p->frequency; - u32 fbw; - int i; - u8 c; - - /* ensure correct values - * maybe redundant as core already checks this */ - if ((frequency < fe->ops.info.frequency_min) - || (frequency > fe->ops.info.frequency_max)) - return -EINVAL; - - /** - * alpha = 1.35 for dvb-s - * fBW = (alpha*symbolrate)/(2*0.8) - * 1.35 / (2*0.8) = 27 / 32 - */ - fbw = (27 * p->symbol_rate) / 32; - - /* scale to kHz */ - fbw /= 1000; - - /* Add safe margin of 3MHz */ - fbw += 3000; - - /* setting the charge pump - guessed values */ - if (frequency < 950000) - return -EINVAL; - else if (frequency < 1250000) - c = 0; - else if (frequency < 1750000) - c = 1; - else if (frequency < 2175000) - c = 2; - else - return -EINVAL; - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */ - - ret = zl10036_set_gain_params(state, c); - if (ret < 0) - goto error; - - ret = zl10036_set_frequency(state, p->frequency); - if (ret < 0) - goto error; - - ret = zl10036_set_bandwidth(state, fbw); - if (ret < 0) - goto error; - - /* wait for tuner lock - no idea if this is really needed */ - for (i = 0; i < 20; i++) { - ret = zl10036_read_status_reg(state); - if (ret < 0) - goto error; - - /* check Frequency & Phase Lock Bit */ - if (ret & STATUS_FL) - break; - - msleep(10); - } - -error: - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */ - - return ret; -} - -static int zl10036_get_frequency(struct dvb_frontend *fe, u32 *frequency) -{ - struct zl10036_state *state = fe->tuner_priv; - - *frequency = state->frequency; - - return 0; -} - -static int zl10036_init_regs(struct zl10036_state *state) -{ - int ret; - int i; - - /* could also be one block from reg 2 to 13 and additional 10/11 */ - u8 zl10036_init_tab[][2] = { - { 0x04, 0x00 }, /* 2/3: div=0x400 - arbitrary value */ - { 0x8b, _RDIV_REG }, /* 4/5: rfg=0 ba=1 bg=1 len=? */ - /* p0=0 c=0 r=_RDIV_REG */ - { 0xc0, 0x20 }, /* 6/7: rsd=0 bf=0x10 */ - { 0xd3, 0x40 }, /* 8/9: from datasheet */ - { 0xe3, 0x5b }, /* 10/11: lock window level */ - { 0xf0, 0x28 }, /* 12/13: br=0xa clr=0 tl=0*/ - { 0xe3, 0xf9 }, /* 10/11: unlock window level */ - }; - - /* invalid values to trigger writing */ - state->br = 0xff; - state->bf = 0xff; - - if (!state->config->rf_loop_enable) - zl10036_init_tab[1][0] |= 0x01; - - deb_info("%s\n", __func__); - - for (i = 0; i < ARRAY_SIZE(zl10036_init_tab); i++) { - ret = zl10036_write(state, zl10036_init_tab[i], 2); - if (ret < 0) - return ret; - } - - return 0; -} - -static int zl10036_init(struct dvb_frontend *fe) -{ - struct zl10036_state *state = fe->tuner_priv; - int ret = 0; - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */ - - ret = zl10036_read_status_reg(state); - if (ret < 0) - return ret; - - /* Only init if Power-on-Reset bit is set? */ - ret = zl10036_init_regs(state); - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */ - - return ret; -} - -static struct dvb_tuner_ops zl10036_tuner_ops = { - .info = { - .name = "Zarlink ZL10036", - .frequency_min = 950000, - .frequency_max = 2175000 - }, - .init = zl10036_init, - .release = zl10036_release, - .sleep = zl10036_sleep, - .set_params = zl10036_set_params, - .get_frequency = zl10036_get_frequency, -}; - -struct dvb_frontend *zl10036_attach(struct dvb_frontend *fe, - const struct zl10036_config *config, - struct i2c_adapter *i2c) -{ - struct zl10036_state *state; - int ret; - - if (!config) { - printk(KERN_ERR "%s: no config specified", __func__); - return NULL; - } - - state = kzalloc(sizeof(struct zl10036_state), GFP_KERNEL); - if (!state) - return NULL; - - state->config = config; - state->i2c = i2c; - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */ - - ret = zl10036_read_status_reg(state); - if (ret < 0) { - printk(KERN_ERR "%s: No zl10036 found\n", __func__); - goto error; - } - - ret = zl10036_init_regs(state); - if (ret < 0) { - printk(KERN_ERR "%s: tuner initialization failed\n", - __func__); - goto error; - } - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */ - - fe->tuner_priv = state; - - memcpy(&fe->ops.tuner_ops, &zl10036_tuner_ops, - sizeof(struct dvb_tuner_ops)); - printk(KERN_INFO "%s: tuner initialization (%s addr=0x%02x) ok\n", - __func__, fe->ops.tuner_ops.info.name, config->tuner_address); - - return fe; - -error: - kfree(state); - return NULL; -} -EXPORT_SYMBOL(zl10036_attach); - -module_param_named(debug, zl10036_debug, int, 0644); -MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); -MODULE_DESCRIPTION("DVB ZL10036 driver"); -MODULE_AUTHOR("Tino Reichardt"); -MODULE_AUTHOR("Matthias Schwarzott"); -MODULE_LICENSE("GPL"); |