diff options
Diffstat (limited to 'drivers/media/dvb/frontends/stv6110.c')
| -rw-r--r-- | drivers/media/dvb/frontends/stv6110.c | 451 |
1 files changed, 0 insertions, 451 deletions
diff --git a/drivers/media/dvb/frontends/stv6110.c b/drivers/media/dvb/frontends/stv6110.c deleted file mode 100644 index 20b5fa92c53e..000000000000 --- a/drivers/media/dvb/frontends/stv6110.c +++ /dev/null @@ -1,451 +0,0 @@ -/* - * stv6110.c - * - * Driver for ST STV6110 satellite tuner IC. - * - * Copyright (C) 2009 NetUP Inc. - * Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru> - * - * 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. - */ - -#include <linux/slab.h> -#include <linux/module.h> -#include <linux/dvb/frontend.h> - -#include <linux/types.h> - -#include "stv6110.h" - -static int debug; - -struct stv6110_priv { - int i2c_address; - struct i2c_adapter *i2c; - - u32 mclk; - u8 clk_div; - u8 gain; - u8 regs[8]; -}; - -#define dprintk(args...) \ - do { \ - if (debug) \ - printk(KERN_DEBUG args); \ - } while (0) - -static s32 abssub(s32 a, s32 b) -{ - if (a > b) - return a - b; - else - return b - a; -}; - -static int stv6110_release(struct dvb_frontend *fe) -{ - kfree(fe->tuner_priv); - fe->tuner_priv = NULL; - return 0; -} - -static int stv6110_write_regs(struct dvb_frontend *fe, u8 buf[], - int start, int len) -{ - struct stv6110_priv *priv = fe->tuner_priv; - int rc; - u8 cmdbuf[len + 1]; - struct i2c_msg msg = { - .addr = priv->i2c_address, - .flags = 0, - .buf = cmdbuf, - .len = len + 1 - }; - - dprintk("%s\n", __func__); - - if (start + len > 8) - return -EINVAL; - - memcpy(&cmdbuf[1], buf, len); - cmdbuf[0] = start; - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); - - rc = i2c_transfer(priv->i2c, &msg, 1); - if (rc != 1) - dprintk("%s: i2c error\n", __func__); - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); - - return 0; -} - -static int stv6110_read_regs(struct dvb_frontend *fe, u8 regs[], - int start, int len) -{ - struct stv6110_priv *priv = fe->tuner_priv; - int rc; - u8 reg[] = { start }; - struct i2c_msg msg[] = { - { - .addr = priv->i2c_address, - .flags = 0, - .buf = reg, - .len = 1, - }, { - .addr = priv->i2c_address, - .flags = I2C_M_RD, - .buf = regs, - .len = len, - }, - }; - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); - - rc = i2c_transfer(priv->i2c, msg, 2); - if (rc != 2) - dprintk("%s: i2c error\n", __func__); - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); - - memcpy(&priv->regs[start], regs, len); - - return 0; -} - -static int stv6110_read_reg(struct dvb_frontend *fe, int start) -{ - u8 buf[] = { 0 }; - stv6110_read_regs(fe, buf, start, 1); - - return buf[0]; -} - -static int stv6110_sleep(struct dvb_frontend *fe) -{ - u8 reg[] = { 0 }; - stv6110_write_regs(fe, reg, 0, 1); - - return 0; -} - -static u32 carrier_width(u32 symbol_rate, fe_rolloff_t rolloff) -{ - u32 rlf; - - switch (rolloff) { - case ROLLOFF_20: - rlf = 20; - break; - case ROLLOFF_25: - rlf = 25; - break; - default: - rlf = 35; - break; - } - - return symbol_rate + ((symbol_rate * rlf) / 100); -} - -static int stv6110_set_bandwidth(struct dvb_frontend *fe, u32 bandwidth) -{ - struct stv6110_priv *priv = fe->tuner_priv; - u8 r8, ret = 0x04; - int i; - - if ((bandwidth / 2) > 36000000) /*BW/2 max=31+5=36 mhz for r8=31*/ - r8 = 31; - else if ((bandwidth / 2) < 5000000) /* BW/2 min=5Mhz for F=0 */ - r8 = 0; - else /*if 5 < BW/2 < 36*/ - r8 = (bandwidth / 2) / 1000000 - 5; - - /* ctrl3, RCCLKOFF = 0 Activate the calibration Clock */ - /* ctrl3, CF = r8 Set the LPF value */ - priv->regs[RSTV6110_CTRL3] &= ~((1 << 6) | 0x1f); - priv->regs[RSTV6110_CTRL3] |= (r8 & 0x1f); - stv6110_write_regs(fe, &priv->regs[RSTV6110_CTRL3], RSTV6110_CTRL3, 1); - /* stat1, CALRCSTRT = 1 Start LPF auto calibration*/ - priv->regs[RSTV6110_STAT1] |= 0x02; - stv6110_write_regs(fe, &priv->regs[RSTV6110_STAT1], RSTV6110_STAT1, 1); - - i = 0; - /* Wait for CALRCSTRT == 0 */ - while ((i < 10) && (ret != 0)) { - ret = ((stv6110_read_reg(fe, RSTV6110_STAT1)) & 0x02); - mdelay(1); /* wait for LPF auto calibration */ - i++; - } - - /* RCCLKOFF = 1 calibration done, desactivate the calibration Clock */ - priv->regs[RSTV6110_CTRL3] |= (1 << 6); - stv6110_write_regs(fe, &priv->regs[RSTV6110_CTRL3], RSTV6110_CTRL3, 1); - return 0; -} - -static int stv6110_init(struct dvb_frontend *fe) -{ - struct stv6110_priv *priv = fe->tuner_priv; - u8 buf0[] = { 0x07, 0x11, 0xdc, 0x85, 0x17, 0x01, 0xe6, 0x1e }; - - memcpy(priv->regs, buf0, 8); - /* K = (Reference / 1000000) - 16 */ - priv->regs[RSTV6110_CTRL1] &= ~(0x1f << 3); - priv->regs[RSTV6110_CTRL1] |= - ((((priv->mclk / 1000000) - 16) & 0x1f) << 3); - - /* divisor value for the output clock */ - priv->regs[RSTV6110_CTRL2] &= ~0xc0; - priv->regs[RSTV6110_CTRL2] |= (priv->clk_div << 6); - - stv6110_write_regs(fe, &priv->regs[RSTV6110_CTRL1], RSTV6110_CTRL1, 8); - msleep(1); - stv6110_set_bandwidth(fe, 72000000); - - return 0; -} - -static int stv6110_get_frequency(struct dvb_frontend *fe, u32 *frequency) -{ - struct stv6110_priv *priv = fe->tuner_priv; - u32 nbsteps, divider, psd2, freq; - u8 regs[] = { 0, 0, 0, 0, 0, 0, 0, 0 }; - - stv6110_read_regs(fe, regs, 0, 8); - /*N*/ - divider = (priv->regs[RSTV6110_TUNING2] & 0x0f) << 8; - divider += priv->regs[RSTV6110_TUNING1]; - - /*R*/ - nbsteps = (priv->regs[RSTV6110_TUNING2] >> 6) & 3; - /*p*/ - psd2 = (priv->regs[RSTV6110_TUNING2] >> 4) & 1; - - freq = divider * (priv->mclk / 1000); - freq /= (1 << (nbsteps + psd2)); - freq /= 4; - - *frequency = freq; - - return 0; -} - -static int stv6110_set_frequency(struct dvb_frontend *fe, u32 frequency) -{ - struct stv6110_priv *priv = fe->tuner_priv; - struct dtv_frontend_properties *c = &fe->dtv_property_cache; - u8 ret = 0x04; - u32 divider, ref, p, presc, i, result_freq, vco_freq; - s32 p_calc, p_calc_opt = 1000, r_div, r_div_opt = 0, p_val; - s32 srate; - - dprintk("%s, freq=%d kHz, mclk=%d Hz\n", __func__, - frequency, priv->mclk); - - /* K = (Reference / 1000000) - 16 */ - priv->regs[RSTV6110_CTRL1] &= ~(0x1f << 3); - priv->regs[RSTV6110_CTRL1] |= - ((((priv->mclk / 1000000) - 16) & 0x1f) << 3); - - /* BB_GAIN = db/2 */ - if (fe->ops.set_property && fe->ops.get_property) { - srate = c->symbol_rate; - dprintk("%s: Get Frontend parameters: srate=%d\n", - __func__, srate); - } else - srate = 15000000; - - priv->regs[RSTV6110_CTRL2] &= ~0x0f; - priv->regs[RSTV6110_CTRL2] |= (priv->gain & 0x0f); - - if (frequency <= 1023000) { - p = 1; - presc = 0; - } else if (frequency <= 1300000) { - p = 1; - presc = 1; - } else if (frequency <= 2046000) { - p = 0; - presc = 0; - } else { - p = 0; - presc = 1; - } - /* DIV4SEL = p*/ - priv->regs[RSTV6110_TUNING2] &= ~(1 << 4); - priv->regs[RSTV6110_TUNING2] |= (p << 4); - - /* PRESC32ON = presc */ - priv->regs[RSTV6110_TUNING2] &= ~(1 << 5); - priv->regs[RSTV6110_TUNING2] |= (presc << 5); - - p_val = (int)(1 << (p + 1)) * 10;/* P = 2 or P = 4 */ - for (r_div = 0; r_div <= 3; r_div++) { - p_calc = (priv->mclk / 100000); - p_calc /= (1 << (r_div + 1)); - if ((abssub(p_calc, p_val)) < (abssub(p_calc_opt, p_val))) - r_div_opt = r_div; - - p_calc_opt = (priv->mclk / 100000); - p_calc_opt /= (1 << (r_div_opt + 1)); - } - - ref = priv->mclk / ((1 << (r_div_opt + 1)) * (1 << (p + 1))); - divider = (((frequency * 1000) + (ref >> 1)) / ref); - - /* RDIV = r_div_opt */ - priv->regs[RSTV6110_TUNING2] &= ~(3 << 6); - priv->regs[RSTV6110_TUNING2] |= (((r_div_opt) & 3) << 6); - - /* NDIV_MSB = MSB(divider) */ - priv->regs[RSTV6110_TUNING2] &= ~0x0f; - priv->regs[RSTV6110_TUNING2] |= (((divider) >> 8) & 0x0f); - - /* NDIV_LSB, LSB(divider) */ - priv->regs[RSTV6110_TUNING1] = (divider & 0xff); - - /* CALVCOSTRT = 1 VCO Auto Calibration */ - priv->regs[RSTV6110_STAT1] |= 0x04; - stv6110_write_regs(fe, &priv->regs[RSTV6110_CTRL1], - RSTV6110_CTRL1, 8); - - i = 0; - /* Wait for CALVCOSTRT == 0 */ - while ((i < 10) && (ret != 0)) { - ret = ((stv6110_read_reg(fe, RSTV6110_STAT1)) & 0x04); - msleep(1); /* wait for VCO auto calibration */ - i++; - } - - ret = stv6110_read_reg(fe, RSTV6110_STAT1); - stv6110_get_frequency(fe, &result_freq); - - vco_freq = divider * ((priv->mclk / 1000) / ((1 << (r_div_opt + 1)))); - dprintk("%s, stat1=%x, lo_freq=%d kHz, vco_frec=%d kHz\n", __func__, - ret, result_freq, vco_freq); - - return 0; -} - -static int stv6110_set_params(struct dvb_frontend *fe) -{ - struct dtv_frontend_properties *c = &fe->dtv_property_cache; - u32 bandwidth = carrier_width(c->symbol_rate, c->rolloff); - - stv6110_set_frequency(fe, c->frequency); - stv6110_set_bandwidth(fe, bandwidth); - - return 0; -} - -static int stv6110_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth) -{ - struct stv6110_priv *priv = fe->tuner_priv; - u8 r8 = 0; - u8 regs[] = { 0, 0, 0, 0, 0, 0, 0, 0 }; - stv6110_read_regs(fe, regs, 0, 8); - - /* CF */ - r8 = priv->regs[RSTV6110_CTRL3] & 0x1f; - *bandwidth = (r8 + 5) * 2000000;/* x2 for ZIF tuner BW/2 = F+5 Mhz */ - - return 0; -} - -static struct dvb_tuner_ops stv6110_tuner_ops = { - .info = { - .name = "ST STV6110", - .frequency_min = 950000, - .frequency_max = 2150000, - .frequency_step = 1000, - }, - .init = stv6110_init, - .release = stv6110_release, - .sleep = stv6110_sleep, - .set_params = stv6110_set_params, - .get_frequency = stv6110_get_frequency, - .set_frequency = stv6110_set_frequency, - .get_bandwidth = stv6110_get_bandwidth, - .set_bandwidth = stv6110_set_bandwidth, - -}; - -struct dvb_frontend *stv6110_attach(struct dvb_frontend *fe, - const struct stv6110_config *config, - struct i2c_adapter *i2c) -{ - struct stv6110_priv *priv = NULL; - u8 reg0[] = { 0x00, 0x07, 0x11, 0xdc, 0x85, 0x17, 0x01, 0xe6, 0x1e }; - - struct i2c_msg msg[] = { - { - .addr = config->i2c_address, - .flags = 0, - .buf = reg0, - .len = 9 - } - }; - int ret; - - /* divisor value for the output clock */ - reg0[2] &= ~0xc0; - reg0[2] |= (config->clk_div << 6); - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); - - ret = i2c_transfer(i2c, msg, 1); - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); - - if (ret != 1) - return NULL; - - priv = kzalloc(sizeof(struct stv6110_priv), GFP_KERNEL); - if (priv == NULL) - return NULL; - - priv->i2c_address = config->i2c_address; - priv->i2c = i2c; - priv->mclk = config->mclk; - priv->clk_div = config->clk_div; - priv->gain = config->gain; - - memcpy(&priv->regs, ®0[1], 8); - - memcpy(&fe->ops.tuner_ops, &stv6110_tuner_ops, - sizeof(struct dvb_tuner_ops)); - fe->tuner_priv = priv; - printk(KERN_INFO "STV6110 attached on addr=%x!\n", priv->i2c_address); - - return fe; -} -EXPORT_SYMBOL(stv6110_attach); - -module_param(debug, int, 0644); -MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); - -MODULE_DESCRIPTION("ST STV6110 driver"); -MODULE_AUTHOR("Igor M. Liplianin"); -MODULE_LICENSE("GPL"); |