From e09b41010ba33a20a87472ee821fa407a5b8da36 Mon Sep 17 00:00:00 2001 From: José Pekkarinen Date: Mon, 11 Apr 2016 10:41:07 +0300 Subject: These changes are the raw update to linux-4.4.6-rt14. Kernel sources are taken from kernel.org, and rt patch from the rt wiki download page. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen --- kernel/drivers/media/dvb-frontends/ts2020.c | 592 +++++++++++++++++----------- 1 file changed, 359 insertions(+), 233 deletions(-) (limited to 'kernel/drivers/media/dvb-frontends/ts2020.c') diff --git a/kernel/drivers/media/dvb-frontends/ts2020.c b/kernel/drivers/media/dvb-frontends/ts2020.c index 90164a38c..7979e5d64 100644 --- a/kernel/drivers/media/dvb-frontends/ts2020.c +++ b/kernel/drivers/media/dvb-frontends/ts2020.c @@ -21,23 +21,32 @@ #include "dvb_frontend.h" #include "ts2020.h" +#include +#include #define TS2020_XTAL_FREQ 27000 /* in kHz */ #define FREQ_OFFSET_LOW_SYM_RATE 3000 struct ts2020_priv { + struct i2c_client *client; + struct mutex regmap_mutex; + struct regmap_config regmap_config; + struct regmap *regmap; struct dvb_frontend *fe; + struct delayed_work stat_work; + int (*get_agc_pwm)(struct dvb_frontend *fe, u8 *_agc_pwm); /* i2c details */ - int i2c_address; struct i2c_adapter *i2c; + int i2c_address; + bool loop_through:1; u8 clk_out:2; u8 clk_out_div:5; - u32 frequency; - u32 frequency_div; + bool dont_poll:1; + u32 frequency_div; /* LO output divider switch frequency */ + u32 frequency_khz; /* actual used LO frequency */ #define TS2020_M88TS2020 0 #define TS2020_M88TS2022 1 u8 tuner; - u8 loop_through:1; }; struct ts2020_reg_val { @@ -45,84 +54,23 @@ struct ts2020_reg_val { u8 val; }; -static int ts2020_release(struct dvb_frontend *fe) -{ - kfree(fe->tuner_priv); - fe->tuner_priv = NULL; - return 0; -} +static void ts2020_stat_work(struct work_struct *work); -static int ts2020_writereg(struct dvb_frontend *fe, int reg, int data) +static int ts2020_release(struct dvb_frontend *fe) { struct ts2020_priv *priv = fe->tuner_priv; - u8 buf[] = { reg, data }; - struct i2c_msg msg[] = { - { - .addr = priv->i2c_address, - .flags = 0, - .buf = buf, - .len = 2 - } - }; - int err; - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); - - err = i2c_transfer(priv->i2c, msg, 1); - if (err != 1) { - printk(KERN_ERR - "%s: writereg error(err == %i, reg == 0x%02x, value == 0x%02x)\n", - __func__, err, reg, data); - return -EREMOTEIO; - } + struct i2c_client *client = priv->client; - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); + dev_dbg(&client->dev, "\n"); + i2c_unregister_device(client); return 0; } -static int ts2020_readreg(struct dvb_frontend *fe, u8 reg) -{ - struct ts2020_priv *priv = fe->tuner_priv; - int ret; - u8 b0[] = { reg }; - u8 b1[] = { 0 }; - struct i2c_msg msg[] = { - { - .addr = priv->i2c_address, - .flags = 0, - .buf = b0, - .len = 1 - }, { - .addr = priv->i2c_address, - .flags = I2C_M_RD, - .buf = b1, - .len = 1 - } - }; - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); - - ret = i2c_transfer(priv->i2c, msg, 2); - - if (ret != 2) { - printk(KERN_ERR "%s: reg=0x%x(error=%d)\n", - __func__, reg, ret); - return ret; - } - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); - - return b1[0]; -} - static int ts2020_sleep(struct dvb_frontend *fe) { struct ts2020_priv *priv = fe->tuner_priv; + int ret; u8 u8tmp; if (priv->tuner == TS2020_M88TS2020) @@ -130,24 +78,32 @@ static int ts2020_sleep(struct dvb_frontend *fe) else u8tmp = 0x00; - return ts2020_writereg(fe, u8tmp, 0x00); + ret = regmap_write(priv->regmap, u8tmp, 0x00); + if (ret < 0) + return ret; + + /* stop statistics polling */ + if (!priv->dont_poll) + cancel_delayed_work_sync(&priv->stat_work); + return 0; } static int ts2020_init(struct dvb_frontend *fe) { + struct dtv_frontend_properties *c = &fe->dtv_property_cache; struct ts2020_priv *priv = fe->tuner_priv; int i; u8 u8tmp; if (priv->tuner == TS2020_M88TS2020) { - ts2020_writereg(fe, 0x42, 0x73); - ts2020_writereg(fe, 0x05, priv->clk_out_div); - ts2020_writereg(fe, 0x20, 0x27); - ts2020_writereg(fe, 0x07, 0x02); - ts2020_writereg(fe, 0x11, 0xff); - ts2020_writereg(fe, 0x60, 0xf9); - ts2020_writereg(fe, 0x08, 0x01); - ts2020_writereg(fe, 0x00, 0x41); + regmap_write(priv->regmap, 0x42, 0x73); + regmap_write(priv->regmap, 0x05, priv->clk_out_div); + regmap_write(priv->regmap, 0x20, 0x27); + regmap_write(priv->regmap, 0x07, 0x02); + regmap_write(priv->regmap, 0x11, 0xff); + regmap_write(priv->regmap, 0x60, 0xf9); + regmap_write(priv->regmap, 0x08, 0x01); + regmap_write(priv->regmap, 0x00, 0x41); } else { static const struct ts2020_reg_val reg_vals[] = { {0x7d, 0x9d}, @@ -163,8 +119,8 @@ static int ts2020_init(struct dvb_frontend *fe) {0x12, 0xa0}, }; - ts2020_writereg(fe, 0x00, 0x01); - ts2020_writereg(fe, 0x00, 0x03); + regmap_write(priv->regmap, 0x00, 0x01); + regmap_write(priv->regmap, 0x00, 0x03); switch (priv->clk_out) { case TS2020_CLK_OUT_DISABLED: @@ -172,7 +128,7 @@ static int ts2020_init(struct dvb_frontend *fe) break; case TS2020_CLK_OUT_ENABLED: u8tmp = 0x70; - ts2020_writereg(fe, 0x05, priv->clk_out_div); + regmap_write(priv->regmap, 0x05, priv->clk_out_div); break; case TS2020_CLK_OUT_ENABLED_XTALOUT: u8tmp = 0x6c; @@ -182,50 +138,61 @@ static int ts2020_init(struct dvb_frontend *fe) break; } - ts2020_writereg(fe, 0x42, u8tmp); + regmap_write(priv->regmap, 0x42, u8tmp); if (priv->loop_through) u8tmp = 0xec; else u8tmp = 0x6c; - ts2020_writereg(fe, 0x62, u8tmp); + regmap_write(priv->regmap, 0x62, u8tmp); for (i = 0; i < ARRAY_SIZE(reg_vals); i++) - ts2020_writereg(fe, reg_vals[i].reg, reg_vals[i].val); + regmap_write(priv->regmap, reg_vals[i].reg, + reg_vals[i].val); } + /* Initialise v5 stats here */ + c->strength.len = 1; + c->strength.stat[0].scale = FE_SCALE_DECIBEL; + c->strength.stat[0].uvalue = 0; + + /* Start statistics polling by invoking the work function */ + ts2020_stat_work(&priv->stat_work.work); return 0; } static int ts2020_tuner_gate_ctrl(struct dvb_frontend *fe, u8 offset) { + struct ts2020_priv *priv = fe->tuner_priv; int ret; - ret = ts2020_writereg(fe, 0x51, 0x1f - offset); - ret |= ts2020_writereg(fe, 0x51, 0x1f); - ret |= ts2020_writereg(fe, 0x50, offset); - ret |= ts2020_writereg(fe, 0x50, 0x00); + ret = regmap_write(priv->regmap, 0x51, 0x1f - offset); + ret |= regmap_write(priv->regmap, 0x51, 0x1f); + ret |= regmap_write(priv->regmap, 0x50, offset); + ret |= regmap_write(priv->regmap, 0x50, 0x00); msleep(20); return ret; } static int ts2020_set_tuner_rf(struct dvb_frontend *fe) { - int reg; - - reg = ts2020_readreg(fe, 0x3d); - reg &= 0x7f; - if (reg < 0x16) - reg = 0xa1; - else if (reg == 0x16) - reg = 0x99; + struct ts2020_priv *dev = fe->tuner_priv; + int ret; + unsigned int utmp; + + ret = regmap_read(dev->regmap, 0x3d, &utmp); + utmp &= 0x7f; + if (utmp < 0x16) + utmp = 0xa1; + else if (utmp == 0x16) + utmp = 0x99; else - reg = 0xf9; + utmp = 0xf9; - ts2020_writereg(fe, 0x60, reg); - reg = ts2020_tuner_gate_ctrl(fe, 0x08); + regmap_write(dev->regmap, 0x60, utmp); + ret = ts2020_tuner_gate_ctrl(fe, 0x08); - return reg; + return ret; } static int ts2020_set_params(struct dvb_frontend *fe) @@ -233,45 +200,62 @@ static int ts2020_set_params(struct dvb_frontend *fe) struct dtv_frontend_properties *c = &fe->dtv_property_cache; struct ts2020_priv *priv = fe->tuner_priv; int ret; - u32 frequency = c->frequency; - s32 offset_khz; - u32 symbol_rate = (c->symbol_rate / 1000); + unsigned int utmp; u32 f3db, gdiv28; - u16 value, ndiv, lpf_coeff; - u8 lpf_mxdiv, mlpf_max, mlpf_min, nlpf; - u8 lo = 0x01, div4 = 0x0; - - /* Calculate frequency divider */ - if (frequency < priv->frequency_div) { - lo |= 0x10; - div4 = 0x1; - ndiv = (frequency * 14 * 4) / TS2020_XTAL_FREQ; - } else - ndiv = (frequency * 14 * 2) / TS2020_XTAL_FREQ; - ndiv = ndiv + ndiv % 2; - ndiv = ndiv - 1024; + u16 u16tmp, value, lpf_coeff; + u8 buf[3], reg10, lpf_mxdiv, mlpf_max, mlpf_min, nlpf; + unsigned int f_ref_khz, f_vco_khz, div_ref, div_out, pll_n; + unsigned int frequency_khz = c->frequency; + + /* + * Integer-N PLL synthesizer + * kHz is used for all calculations to keep calculations within 32-bit + */ + f_ref_khz = TS2020_XTAL_FREQ; + div_ref = DIV_ROUND_CLOSEST(f_ref_khz, 2000); + + /* select LO output divider */ + if (frequency_khz < priv->frequency_div) { + div_out = 4; + reg10 = 0x10; + } else { + div_out = 2; + reg10 = 0x00; + } + + f_vco_khz = frequency_khz * div_out; + pll_n = f_vco_khz * div_ref / f_ref_khz; + pll_n += pll_n % 2; + priv->frequency_khz = pll_n * f_ref_khz / div_ref / div_out; + + pr_debug("frequency=%u offset=%d f_vco_khz=%u pll_n=%u div_ref=%u div_out=%u\n", + priv->frequency_khz, priv->frequency_khz - c->frequency, + f_vco_khz, pll_n, div_ref, div_out); if (priv->tuner == TS2020_M88TS2020) { lpf_coeff = 2766; - ret = ts2020_writereg(fe, 0x10, 0x80 | lo); + reg10 |= 0x01; + ret = regmap_write(priv->regmap, 0x10, reg10); } else { lpf_coeff = 3200; - ret = ts2020_writereg(fe, 0x10, 0x0b); - ret |= ts2020_writereg(fe, 0x11, 0x40); + reg10 |= 0x0b; + ret = regmap_write(priv->regmap, 0x10, reg10); + ret |= regmap_write(priv->regmap, 0x11, 0x40); } - /* Set frequency divider */ - ret |= ts2020_writereg(fe, 0x01, (ndiv >> 8) & 0xf); - ret |= ts2020_writereg(fe, 0x02, ndiv & 0xff); + u16tmp = pll_n - 1024; + buf[0] = (u16tmp >> 8) & 0xff; + buf[1] = (u16tmp >> 0) & 0xff; + buf[2] = div_ref - 8; + + ret |= regmap_write(priv->regmap, 0x01, buf[0]); + ret |= regmap_write(priv->regmap, 0x02, buf[1]); + ret |= regmap_write(priv->regmap, 0x03, buf[2]); - ret |= ts2020_writereg(fe, 0x03, 0x06); ret |= ts2020_tuner_gate_ctrl(fe, 0x10); if (ret < 0) return -ENODEV; - /* Tuner Frequency Range */ - ret = ts2020_writereg(fe, 0x10, lo); - ret |= ts2020_tuner_gate_ctrl(fe, 0x08); /* Tuner RF */ @@ -279,28 +263,26 @@ static int ts2020_set_params(struct dvb_frontend *fe) ret |= ts2020_set_tuner_rf(fe); gdiv28 = (TS2020_XTAL_FREQ / 1000 * 1694 + 500) / 1000; - ret |= ts2020_writereg(fe, 0x04, gdiv28 & 0xff); + ret |= regmap_write(priv->regmap, 0x04, gdiv28 & 0xff); ret |= ts2020_tuner_gate_ctrl(fe, 0x04); if (ret < 0) return -ENODEV; if (priv->tuner == TS2020_M88TS2022) { - ret = ts2020_writereg(fe, 0x25, 0x00); - ret |= ts2020_writereg(fe, 0x27, 0x70); - ret |= ts2020_writereg(fe, 0x41, 0x09); - ret |= ts2020_writereg(fe, 0x08, 0x0b); + ret = regmap_write(priv->regmap, 0x25, 0x00); + ret |= regmap_write(priv->regmap, 0x27, 0x70); + ret |= regmap_write(priv->regmap, 0x41, 0x09); + ret |= regmap_write(priv->regmap, 0x08, 0x0b); if (ret < 0) return -ENODEV; } - value = ts2020_readreg(fe, 0x26); + regmap_read(priv->regmap, 0x26, &utmp); + value = utmp; - f3db = (symbol_rate * 135) / 200 + 2000; - f3db += FREQ_OFFSET_LOW_SYM_RATE; - if (f3db < 7000) - f3db = 7000; - if (f3db > 40000) - f3db = 40000; + f3db = (c->bandwidth_hz / 1000 / 2) + 2000; + f3db += FREQ_OFFSET_LOW_SYM_RATE; /* FIXME: ~always too wide filter */ + f3db = clamp(f3db, 7000U, 40000U); gdiv28 = gdiv28 * 207 / (value * 2 + 151); mlpf_max = gdiv28 * 135 / 100; @@ -327,19 +309,14 @@ static int ts2020_set_params(struct dvb_frontend *fe) if (lpf_mxdiv > mlpf_max) lpf_mxdiv = mlpf_max; - ret = ts2020_writereg(fe, 0x04, lpf_mxdiv); - ret |= ts2020_writereg(fe, 0x06, nlpf); + ret = regmap_write(priv->regmap, 0x04, lpf_mxdiv); + ret |= regmap_write(priv->regmap, 0x06, nlpf); ret |= ts2020_tuner_gate_ctrl(fe, 0x04); ret |= ts2020_tuner_gate_ctrl(fe, 0x01); msleep(80); - /* calculate offset assuming 96000kHz*/ - offset_khz = (ndiv - ndiv % 2 + 1024) * TS2020_XTAL_FREQ - / (6 + 8) / (div4 + 1) / 2; - - priv->frequency = offset_khz; return (ret < 0) ? -EINVAL : 0; } @@ -347,8 +324,8 @@ static int ts2020_set_params(struct dvb_frontend *fe) static int ts2020_get_frequency(struct dvb_frontend *fe, u32 *frequency) { struct ts2020_priv *priv = fe->tuner_priv; - *frequency = priv->frequency; + *frequency = priv->frequency_khz; return 0; } @@ -358,28 +335,164 @@ static int ts2020_get_if_frequency(struct dvb_frontend *fe, u32 *frequency) return 0; } -/* read TS2020 signal strength */ -static int ts2020_read_signal_strength(struct dvb_frontend *fe, - u16 *signal_strength) +/* + * Get the tuner gain. + * @fe: The front end for which we're determining the gain + * @v_agc: The voltage of the AGC from the demodulator (0-2600mV) + * @_gain: Where to store the gain (in 0.001dB units) + * + * Returns 0 or a negative error code. + */ +static int ts2020_read_tuner_gain(struct dvb_frontend *fe, unsigned v_agc, + __s64 *_gain) +{ + struct ts2020_priv *priv = fe->tuner_priv; + unsigned long gain1, gain2, gain3; + unsigned utmp; + int ret; + + /* Read the RF gain */ + ret = regmap_read(priv->regmap, 0x3d, &utmp); + if (ret < 0) + return ret; + gain1 = utmp & 0x1f; + + /* Read the baseband gain */ + ret = regmap_read(priv->regmap, 0x21, &utmp); + if (ret < 0) + return ret; + gain2 = utmp & 0x1f; + + switch (priv->tuner) { + case TS2020_M88TS2020: + gain1 = clamp_t(long, gain1, 0, 15); + gain2 = clamp_t(long, gain2, 0, 13); + v_agc = clamp_t(long, v_agc, 400, 1100); + + *_gain = -(gain1 * 2330 + + gain2 * 3500 + + v_agc * 24 / 10 * 10 + + 10000); + /* gain in range -19600 to -116850 in units of 0.001dB */ + break; + + case TS2020_M88TS2022: + ret = regmap_read(priv->regmap, 0x66, &utmp); + if (ret < 0) + return ret; + gain3 = (utmp >> 3) & 0x07; + + gain1 = clamp_t(long, gain1, 0, 15); + gain2 = clamp_t(long, gain2, 2, 16); + gain3 = clamp_t(long, gain3, 0, 6); + v_agc = clamp_t(long, v_agc, 600, 1600); + + *_gain = -(gain1 * 2650 + + gain2 * 3380 + + gain3 * 2850 + + v_agc * 176 / 100 * 10 - + 30000); + /* gain in range -47320 to -158950 in units of 0.001dB */ + break; + } + + return 0; +} + +/* + * Get the AGC information from the demodulator and use that to calculate the + * tuner gain. + */ +static int ts2020_get_tuner_gain(struct dvb_frontend *fe, __s64 *_gain) { - u16 sig_reading, sig_strength; - u8 rfgain, bbgain; + struct ts2020_priv *priv = fe->tuner_priv; + int v_agc = 0, ret; + u8 agc_pwm; - rfgain = ts2020_readreg(fe, 0x3d) & 0x1f; - bbgain = ts2020_readreg(fe, 0x21) & 0x1f; + /* Read the AGC PWM rate from the demodulator */ + if (priv->get_agc_pwm) { + ret = priv->get_agc_pwm(fe, &agc_pwm); + if (ret < 0) + return ret; - if (rfgain > 15) - rfgain = 15; - if (bbgain > 13) - bbgain = 13; + switch (priv->tuner) { + case TS2020_M88TS2020: + v_agc = (int)agc_pwm * 20 - 1166; + break; + case TS2020_M88TS2022: + v_agc = (int)agc_pwm * 16 - 670; + break; + } - sig_reading = rfgain * 2 + bbgain * 3; + if (v_agc < 0) + v_agc = 0; + } - sig_strength = 40 + (64 - sig_reading) * 50 / 64 ; + return ts2020_read_tuner_gain(fe, v_agc, _gain); +} - /* cook the value to be suitable for szap-s2 human readable output */ - *signal_strength = sig_strength * 1000; +/* + * Gather statistics on a regular basis + */ +static void ts2020_stat_work(struct work_struct *work) +{ + struct ts2020_priv *priv = container_of(work, struct ts2020_priv, + stat_work.work); + struct i2c_client *client = priv->client; + struct dtv_frontend_properties *c = &priv->fe->dtv_property_cache; + int ret; + + dev_dbg(&client->dev, "\n"); + + ret = ts2020_get_tuner_gain(priv->fe, &c->strength.stat[0].svalue); + if (ret < 0) + goto err; + c->strength.stat[0].scale = FE_SCALE_DECIBEL; + + if (!priv->dont_poll) + schedule_delayed_work(&priv->stat_work, msecs_to_jiffies(2000)); + return; +err: + dev_dbg(&client->dev, "failed=%d\n", ret); +} + +/* + * Read TS2020 signal strength in v3 format. + */ +static int ts2020_read_signal_strength(struct dvb_frontend *fe, + u16 *_signal_strength) +{ + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + struct ts2020_priv *priv = fe->tuner_priv; + unsigned strength; + __s64 gain; + + if (priv->dont_poll) + ts2020_stat_work(&priv->stat_work.work); + + if (c->strength.stat[0].scale == FE_SCALE_NOT_AVAILABLE) { + *_signal_strength = 0; + return 0; + } + + gain = c->strength.stat[0].svalue; + + /* Calculate the signal strength based on the total gain of the tuner */ + if (gain < -85000) + /* 0%: no signal or weak signal */ + strength = 0; + else if (gain < -65000) + /* 0% - 60%: weak signal */ + strength = 0 + div64_s64((85000 + gain) * 3, 1000); + else if (gain < -45000) + /* 60% - 90%: normal signal */ + strength = 60 + div64_s64((65000 + gain) * 3, 2000); + else + /* 90% - 99%: strong signal */ + strength = 90 + div64_s64((45000 + gain), 5000); + + *_signal_strength = strength * 65535 / 100; return 0; } @@ -402,53 +515,50 @@ struct dvb_frontend *ts2020_attach(struct dvb_frontend *fe, const struct ts2020_config *config, struct i2c_adapter *i2c) { - struct ts2020_priv *priv = NULL; - u8 buf; - - priv = kzalloc(sizeof(struct ts2020_priv), GFP_KERNEL); - if (priv == NULL) + struct i2c_client *client; + struct i2c_board_info board_info; + + /* This is only used by ts2020_probe() so can be on the stack */ + struct ts2020_config pdata; + + memcpy(&pdata, config, sizeof(pdata)); + pdata.fe = fe; + pdata.attach_in_use = true; + + memset(&board_info, 0, sizeof(board_info)); + strlcpy(board_info.type, "ts2020", I2C_NAME_SIZE); + board_info.addr = config->tuner_address; + board_info.platform_data = &pdata; + client = i2c_new_device(i2c, &board_info); + if (!client || !client->dev.driver) return NULL; - priv->i2c_address = config->tuner_address; - priv->i2c = i2c; - priv->clk_out = config->clk_out; - priv->clk_out_div = config->clk_out_div; - priv->frequency_div = config->frequency_div; - priv->fe = fe; - fe->tuner_priv = priv; - - if (!priv->frequency_div) - priv->frequency_div = 1060000; - - /* Wake Up the tuner */ - if ((0x03 & ts2020_readreg(fe, 0x00)) == 0x00) { - ts2020_writereg(fe, 0x00, 0x01); - msleep(2); - } + return fe; +} +EXPORT_SYMBOL(ts2020_attach); - ts2020_writereg(fe, 0x00, 0x03); - msleep(2); - - /* Check the tuner version */ - buf = ts2020_readreg(fe, 0x00); - if ((buf == 0x01) || (buf == 0x41) || (buf == 0x81)) { - printk(KERN_INFO "%s: Find tuner TS2020!\n", __func__); - priv->tuner = TS2020_M88TS2020; - } else if ((buf == 0x83) || (buf == 0xc3)) { - printk(KERN_INFO "%s: Find tuner TS2022!\n", __func__); - priv->tuner = TS2020_M88TS2022; - } else { - printk(KERN_ERR "%s: Read tuner reg[0] = %d\n", __func__, buf); - kfree(priv); - return NULL; - } +/* + * We implement own regmap locking due to legacy DVB attach which uses frontend + * gate control callback to control I2C bus access. We can open / close gate and + * serialize whole open / I2C-operation / close sequence at the same. + */ +static void ts2020_regmap_lock(void *__dev) +{ + struct ts2020_priv *dev = __dev; - memcpy(&fe->ops.tuner_ops, &ts2020_tuner_ops, - sizeof(struct dvb_tuner_ops)); + mutex_lock(&dev->regmap_mutex); + if (dev->fe->ops.i2c_gate_ctrl) + dev->fe->ops.i2c_gate_ctrl(dev->fe, 1); +} - return fe; +static void ts2020_regmap_unlock(void *__dev) +{ + struct ts2020_priv *dev = __dev; + + if (dev->fe->ops.i2c_gate_ctrl) + dev->fe->ops.i2c_gate_ctrl(dev->fe, 0); + mutex_unlock(&dev->regmap_mutex); } -EXPORT_SYMBOL(ts2020_attach); static int ts2020_probe(struct i2c_client *client, const struct i2c_device_id *id) @@ -467,38 +577,54 @@ static int ts2020_probe(struct i2c_client *client, goto err; } + /* create regmap */ + mutex_init(&dev->regmap_mutex); + dev->regmap_config.reg_bits = 8, + dev->regmap_config.val_bits = 8, + dev->regmap_config.lock = ts2020_regmap_lock, + dev->regmap_config.unlock = ts2020_regmap_unlock, + dev->regmap_config.lock_arg = dev, + dev->regmap = regmap_init_i2c(client, &dev->regmap_config); + if (IS_ERR(dev->regmap)) { + ret = PTR_ERR(dev->regmap); + goto err_kfree; + } + dev->i2c = client->adapter; dev->i2c_address = client->addr; + dev->loop_through = pdata->loop_through; dev->clk_out = pdata->clk_out; dev->clk_out_div = pdata->clk_out_div; + dev->dont_poll = pdata->dont_poll; dev->frequency_div = pdata->frequency_div; dev->fe = fe; + dev->get_agc_pwm = pdata->get_agc_pwm; fe->tuner_priv = dev; + dev->client = client; + INIT_DELAYED_WORK(&dev->stat_work, ts2020_stat_work); /* check if the tuner is there */ - ret = ts2020_readreg(fe, 0x00); - if (ret < 0) - goto err; - utmp = ret; + ret = regmap_read(dev->regmap, 0x00, &utmp); + if (ret) + goto err_regmap_exit; if ((utmp & 0x03) == 0x00) { - ret = ts2020_writereg(fe, 0x00, 0x01); + ret = regmap_write(dev->regmap, 0x00, 0x01); if (ret) - goto err; + goto err_regmap_exit; usleep_range(2000, 50000); } - ret = ts2020_writereg(fe, 0x00, 0x03); + ret = regmap_write(dev->regmap, 0x00, 0x03); if (ret) - goto err; + goto err_regmap_exit; usleep_range(2000, 50000); - ret = ts2020_readreg(fe, 0x00); - if (ret < 0) - goto err; - utmp = ret; + ret = regmap_read(dev->regmap, 0x00, &utmp); + if (ret) + goto err_regmap_exit; dev_dbg(&client->dev, "chip_id=%02x\n", utmp); @@ -520,7 +646,7 @@ static int ts2020_probe(struct i2c_client *client, break; default: ret = -ENODEV; - goto err; + goto err_regmap_exit; } if (dev->tuner == TS2020_M88TS2022) { @@ -530,63 +656,64 @@ static int ts2020_probe(struct i2c_client *client, break; case TS2020_CLK_OUT_ENABLED: u8tmp = 0x70; - ret = ts2020_writereg(fe, 0x05, dev->clk_out_div); + ret = regmap_write(dev->regmap, 0x05, dev->clk_out_div); if (ret) - goto err; + goto err_regmap_exit; break; case TS2020_CLK_OUT_ENABLED_XTALOUT: u8tmp = 0x6c; break; default: ret = -EINVAL; - goto err; + goto err_regmap_exit; } - ret = ts2020_writereg(fe, 0x42, u8tmp); + ret = regmap_write(dev->regmap, 0x42, u8tmp); if (ret) - goto err; + goto err_regmap_exit; if (dev->loop_through) u8tmp = 0xec; else u8tmp = 0x6c; - ret = ts2020_writereg(fe, 0x62, u8tmp); + ret = regmap_write(dev->regmap, 0x62, u8tmp); if (ret) - goto err; + goto err_regmap_exit; } /* sleep */ - ret = ts2020_writereg(fe, 0x00, 0x00); + ret = regmap_write(dev->regmap, 0x00, 0x00); if (ret) - goto err; + goto err_regmap_exit; dev_info(&client->dev, "Montage Technology %s successfully identified\n", chip_str); memcpy(&fe->ops.tuner_ops, &ts2020_tuner_ops, sizeof(struct dvb_tuner_ops)); - fe->ops.tuner_ops.release = NULL; + if (!pdata->attach_in_use) + fe->ops.tuner_ops.release = NULL; i2c_set_clientdata(client, dev); return 0; +err_regmap_exit: + regmap_exit(dev->regmap); +err_kfree: + kfree(dev); err: dev_dbg(&client->dev, "failed=%d\n", ret); - kfree(dev); return ret; } static int ts2020_remove(struct i2c_client *client) { struct ts2020_priv *dev = i2c_get_clientdata(client); - struct dvb_frontend *fe = dev->fe; dev_dbg(&client->dev, "\n"); - memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops)); - fe->tuner_priv = NULL; + regmap_exit(dev->regmap); kfree(dev); - return 0; } @@ -599,7 +726,6 @@ MODULE_DEVICE_TABLE(i2c, ts2020_id_table); static struct i2c_driver ts2020_driver = { .driver = { - .owner = THIS_MODULE, .name = "ts2020", }, .probe = ts2020_probe, -- cgit 1.2.3-korg