From e5fd91f1ef340da553f7a79da9540c3db711c937 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Tue, 8 Sep 2015 01:01:14 -0300 Subject: Linux-libre 4.2-gnu --- drivers/media/tuners/msi001.c | 267 +++++++++++++++++++++++------------------- 1 file changed, 144 insertions(+), 123 deletions(-) (limited to 'drivers/media/tuners/msi001.c') diff --git a/drivers/media/tuners/msi001.c b/drivers/media/tuners/msi001.c index 74cfc3c98..b533240f8 100644 --- a/drivers/media/tuners/msi001.c +++ b/drivers/media/tuners/msi001.c @@ -36,7 +36,7 @@ static const struct v4l2_frequency_band bands[] = { }, }; -struct msi001 { +struct msi001_dev { struct spi_device *spi; struct v4l2_subdev sd; @@ -51,25 +51,26 @@ struct msi001 { unsigned int f_tuner; }; -static inline struct msi001 *sd_to_msi001(struct v4l2_subdev *sd) +static inline struct msi001_dev *sd_to_msi001_dev(struct v4l2_subdev *sd) { - return container_of(sd, struct msi001, sd); + return container_of(sd, struct msi001_dev, sd); } -static int msi001_wreg(struct msi001 *s, u32 data) +static int msi001_wreg(struct msi001_dev *dev, u32 data) { /* Register format: 4 bits addr + 20 bits value */ - return spi_write(s->spi, &data, 3); + return spi_write(dev->spi, &data, 3); }; -static int msi001_set_gain(struct msi001 *s, int lna_gain, int mixer_gain, - int if_gain) +static int msi001_set_gain(struct msi001_dev *dev, int lna_gain, int mixer_gain, + int if_gain) { + struct spi_device *spi = dev->spi; int ret; u32 reg; - dev_dbg(&s->spi->dev, "lna=%d mixer=%d if=%d\n", - lna_gain, mixer_gain, if_gain); + dev_dbg(&spi->dev, "lna=%d mixer=%d if=%d\n", + lna_gain, mixer_gain, if_gain); reg = 1 << 0; reg |= (59 - if_gain) << 4; @@ -78,28 +79,29 @@ static int msi001_set_gain(struct msi001 *s, int lna_gain, int mixer_gain, reg |= (1 - lna_gain) << 13; reg |= 4 << 14; reg |= 0 << 17; - ret = msi001_wreg(s, reg); + ret = msi001_wreg(dev, reg); if (ret) goto err; return 0; err: - dev_dbg(&s->spi->dev, "failed %d\n", ret); + dev_dbg(&spi->dev, "failed %d\n", ret); return ret; }; -static int msi001_set_tuner(struct msi001 *s) +static int msi001_set_tuner(struct msi001_dev *dev) { + struct spi_device *spi = dev->spi; int ret, i; - unsigned int n, m, thresh, frac, vco_step, tmp, f_if1; + unsigned int uitmp, div_n, k, k_thresh, k_frac, div_lo, f_if1; u32 reg; - u64 f_vco, tmp64; - u8 mode, filter_mode, lo_div; + u64 f_vco; + u8 mode, filter_mode; static const struct { u32 rf; u8 mode; - u8 lo_div; + u8 div_lo; } band_lut[] = { { 50000000, 0xe1, 16}, /* AM_MODE2, antenna 2 */ {108000000, 0x42, 32}, /* VHF_MODE */ @@ -130,7 +132,7 @@ static int msi001_set_tuner(struct msi001 *s) {8000000, 0x07}, /* 8 MHz */ }; - unsigned int f_rf = s->f_tuner; + unsigned int f_rf = dev->f_tuner; /* * bandwidth (Hz) @@ -144,19 +146,18 @@ static int msi001_set_tuner(struct msi001 *s) */ unsigned int f_if = 0; #define F_REF 24000000 - #define R_REF 4 - #define F_OUT_STEP 1 + #define DIV_PRE_N 4 + #define F_VCO_STEP div_lo - dev_dbg(&s->spi->dev, "f_rf=%d f_if=%d\n", f_rf, f_if); + dev_dbg(&spi->dev, "f_rf=%d f_if=%d\n", f_rf, f_if); for (i = 0; i < ARRAY_SIZE(band_lut); i++) { if (f_rf <= band_lut[i].rf) { mode = band_lut[i].mode; - lo_div = band_lut[i].lo_div; + div_lo = band_lut[i].div_lo; break; } } - if (i == ARRAY_SIZE(band_lut)) { ret = -EINVAL; goto err; @@ -174,14 +175,13 @@ static int msi001_set_tuner(struct msi001 *s) break; } } - if (i == ARRAY_SIZE(if_freq_lut)) { ret = -EINVAL; goto err; } /* filters */ - bandwidth = s->bandwidth->val; + bandwidth = dev->bandwidth->val; bandwidth = clamp(bandwidth, 200000U, 8000000U); for (i = 0; i < ARRAY_SIZE(bandwidth_lut); i++) { @@ -190,48 +190,61 @@ static int msi001_set_tuner(struct msi001 *s) break; } } - if (i == ARRAY_SIZE(bandwidth_lut)) { ret = -EINVAL; goto err; } - s->bandwidth->val = bandwidth_lut[i].freq; + dev->bandwidth->val = bandwidth_lut[i].freq; - dev_dbg(&s->spi->dev, "bandwidth selected=%d\n", bandwidth_lut[i].freq); + dev_dbg(&spi->dev, "bandwidth selected=%d\n", bandwidth_lut[i].freq); - f_vco = (u64) (f_rf + f_if + f_if1) * lo_div; - tmp64 = f_vco; - m = do_div(tmp64, F_REF * R_REF); - n = (unsigned int) tmp64; + /* + * Fractional-N synthesizer + * + * +---------------------------------------+ + * v | + * Fref +----+ +-------+ +----+ +------+ +---+ + * ------> | PD | --> | VCO | ------> | /4 | --> | /N.F | <-- | K | + * +----+ +-------+ +----+ +------+ +---+ + * | + * | + * v + * +-------+ Fout + * | /Rout | ------> + * +-------+ + */ - vco_step = F_OUT_STEP * lo_div; - thresh = (F_REF * R_REF) / vco_step; - frac = 1ul * thresh * m / (F_REF * R_REF); + /* Calculate PLL integer and fractional control word. */ + f_vco = (u64) (f_rf + f_if + f_if1) * div_lo; + div_n = div_u64_rem(f_vco, DIV_PRE_N * F_REF, &k); + k_thresh = (DIV_PRE_N * F_REF) / F_VCO_STEP; + k_frac = div_u64((u64) k * k_thresh, (DIV_PRE_N * F_REF)); /* Find out greatest common divisor and divide to smaller. */ - tmp = gcd(thresh, frac); - thresh /= tmp; - frac /= tmp; + uitmp = gcd(k_thresh, k_frac); + k_thresh /= uitmp; + k_frac /= uitmp; /* Force divide to reg max. Resolution will be reduced. */ - tmp = DIV_ROUND_UP(thresh, 4095); - thresh = DIV_ROUND_CLOSEST(thresh, tmp); - frac = DIV_ROUND_CLOSEST(frac, tmp); + uitmp = DIV_ROUND_UP(k_thresh, 4095); + k_thresh = DIV_ROUND_CLOSEST(k_thresh, uitmp); + k_frac = DIV_ROUND_CLOSEST(k_frac, uitmp); - /* calc real RF set */ - tmp = 1ul * F_REF * R_REF * n; - tmp += 1ul * F_REF * R_REF * frac / thresh; - tmp /= lo_div; + /* Calculate real RF set. */ + uitmp = (unsigned int) F_REF * DIV_PRE_N * div_n; + uitmp += (unsigned int) F_REF * DIV_PRE_N * k_frac / k_thresh; + uitmp /= div_lo; - dev_dbg(&s->spi->dev, "rf=%u:%u n=%d thresh=%d frac=%d\n", - f_rf, tmp, n, thresh, frac); + dev_dbg(&spi->dev, + "f_rf=%u:%u f_vco=%llu div_n=%u k_thresh=%u k_frac=%u div_lo=%u\n", + f_rf, uitmp, f_vco, div_n, k_thresh, k_frac, div_lo); - ret = msi001_wreg(s, 0x00000e); + ret = msi001_wreg(dev, 0x00000e); if (ret) goto err; - ret = msi001_wreg(s, 0x000003); + ret = msi001_wreg(dev, 0x000003); if (ret) goto err; @@ -241,54 +254,55 @@ static int msi001_set_tuner(struct msi001 *s) reg |= bandwidth << 14; reg |= 0x02 << 17; reg |= 0x00 << 20; - ret = msi001_wreg(s, reg); + ret = msi001_wreg(dev, reg); if (ret) goto err; reg = 5 << 0; - reg |= thresh << 4; + reg |= k_thresh << 4; reg |= 1 << 19; reg |= 1 << 21; - ret = msi001_wreg(s, reg); + ret = msi001_wreg(dev, reg); if (ret) goto err; reg = 2 << 0; - reg |= frac << 4; - reg |= n << 16; - ret = msi001_wreg(s, reg); + reg |= k_frac << 4; + reg |= div_n << 16; + ret = msi001_wreg(dev, reg); if (ret) goto err; - ret = msi001_set_gain(s, s->lna_gain->cur.val, s->mixer_gain->cur.val, - s->if_gain->cur.val); + ret = msi001_set_gain(dev, dev->lna_gain->cur.val, + dev->mixer_gain->cur.val, dev->if_gain->cur.val); if (ret) goto err; reg = 6 << 0; reg |= 63 << 4; reg |= 4095 << 10; - ret = msi001_wreg(s, reg); + ret = msi001_wreg(dev, reg); if (ret) goto err; return 0; err: - dev_dbg(&s->spi->dev, "failed %d\n", ret); + dev_dbg(&spi->dev, "failed %d\n", ret); return ret; -}; +} static int msi001_s_power(struct v4l2_subdev *sd, int on) { - struct msi001 *s = sd_to_msi001(sd); + struct msi001_dev *dev = sd_to_msi001_dev(sd); + struct spi_device *spi = dev->spi; int ret; - dev_dbg(&s->spi->dev, "on=%d\n", on); + dev_dbg(&spi->dev, "on=%d\n", on); if (on) ret = 0; else - ret = msi001_wreg(s, 0x000000); + ret = msi001_wreg(dev, 0x000000); return ret; } @@ -299,9 +313,10 @@ static const struct v4l2_subdev_core_ops msi001_core_ops = { static int msi001_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *v) { - struct msi001 *s = sd_to_msi001(sd); + struct msi001_dev *dev = sd_to_msi001_dev(sd); + struct spi_device *spi = dev->spi; - dev_dbg(&s->spi->dev, "index=%d\n", v->index); + dev_dbg(&spi->dev, "index=%d\n", v->index); strlcpy(v->name, "Mirics MSi001", sizeof(v->name)); v->type = V4L2_TUNER_RF; @@ -314,47 +329,51 @@ static int msi001_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *v) static int msi001_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *v) { - struct msi001 *s = sd_to_msi001(sd); + struct msi001_dev *dev = sd_to_msi001_dev(sd); + struct spi_device *spi = dev->spi; - dev_dbg(&s->spi->dev, "index=%d\n", v->index); + dev_dbg(&spi->dev, "index=%d\n", v->index); return 0; } static int msi001_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f) { - struct msi001 *s = sd_to_msi001(sd); + struct msi001_dev *dev = sd_to_msi001_dev(sd); + struct spi_device *spi = dev->spi; - dev_dbg(&s->spi->dev, "tuner=%d\n", f->tuner); - f->frequency = s->f_tuner; + dev_dbg(&spi->dev, "tuner=%d\n", f->tuner); + f->frequency = dev->f_tuner; return 0; } static int msi001_s_frequency(struct v4l2_subdev *sd, - const struct v4l2_frequency *f) + const struct v4l2_frequency *f) { - struct msi001 *s = sd_to_msi001(sd); + struct msi001_dev *dev = sd_to_msi001_dev(sd); + struct spi_device *spi = dev->spi; unsigned int band; - dev_dbg(&s->spi->dev, "tuner=%d type=%d frequency=%u\n", - f->tuner, f->type, f->frequency); + dev_dbg(&spi->dev, "tuner=%d type=%d frequency=%u\n", + f->tuner, f->type, f->frequency); if (f->frequency < ((bands[0].rangehigh + bands[1].rangelow) / 2)) band = 0; else band = 1; - s->f_tuner = clamp_t(unsigned int, f->frequency, - bands[band].rangelow, bands[band].rangehigh); + dev->f_tuner = clamp_t(unsigned int, f->frequency, + bands[band].rangelow, bands[band].rangehigh); - return msi001_set_tuner(s); + return msi001_set_tuner(dev); } static int msi001_enum_freq_bands(struct v4l2_subdev *sd, - struct v4l2_frequency_band *band) + struct v4l2_frequency_band *band) { - struct msi001 *s = sd_to_msi001(sd); + struct msi001_dev *dev = sd_to_msi001_dev(sd); + struct spi_device *spi = dev->spi; - dev_dbg(&s->spi->dev, "tuner=%d type=%d index=%d\n", - band->tuner, band->type, band->index); + dev_dbg(&spi->dev, "tuner=%d type=%d index=%d\n", + band->tuner, band->type, band->index); if (band->index >= ARRAY_SIZE(bands)) return -EINVAL; @@ -381,34 +400,37 @@ static const struct v4l2_subdev_ops msi001_ops = { static int msi001_s_ctrl(struct v4l2_ctrl *ctrl) { - struct msi001 *s = container_of(ctrl->handler, struct msi001, hdl); + struct msi001_dev *dev = container_of(ctrl->handler, struct msi001_dev, hdl); + struct spi_device *spi = dev->spi; int ret; - dev_dbg(&s->spi->dev, - "id=%d name=%s val=%d min=%lld max=%lld step=%lld\n", - ctrl->id, ctrl->name, ctrl->val, - ctrl->minimum, ctrl->maximum, ctrl->step); + dev_dbg(&spi->dev, "id=%d name=%s val=%d min=%lld max=%lld step=%lld\n", + ctrl->id, ctrl->name, ctrl->val, ctrl->minimum, ctrl->maximum, + ctrl->step); switch (ctrl->id) { case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO: case V4L2_CID_RF_TUNER_BANDWIDTH: - ret = msi001_set_tuner(s); + ret = msi001_set_tuner(dev); break; case V4L2_CID_RF_TUNER_LNA_GAIN: - ret = msi001_set_gain(s, s->lna_gain->val, - s->mixer_gain->cur.val, s->if_gain->cur.val); + ret = msi001_set_gain(dev, dev->lna_gain->val, + dev->mixer_gain->cur.val, + dev->if_gain->cur.val); break; case V4L2_CID_RF_TUNER_MIXER_GAIN: - ret = msi001_set_gain(s, s->lna_gain->cur.val, - s->mixer_gain->val, s->if_gain->cur.val); + ret = msi001_set_gain(dev, dev->lna_gain->cur.val, + dev->mixer_gain->val, + dev->if_gain->cur.val); break; case V4L2_CID_RF_TUNER_IF_GAIN: - ret = msi001_set_gain(s, s->lna_gain->cur.val, - s->mixer_gain->cur.val, s->if_gain->val); + ret = msi001_set_gain(dev, dev->lna_gain->cur.val, + dev->mixer_gain->cur.val, + dev->if_gain->val); break; default: - dev_dbg(&s->spi->dev, "unknown control %d\n", ctrl->id); + dev_dbg(&spi->dev, "unknown control %d\n", ctrl->id); ret = -EINVAL; } @@ -421,56 +443,54 @@ static const struct v4l2_ctrl_ops msi001_ctrl_ops = { static int msi001_probe(struct spi_device *spi) { - struct msi001 *s; + struct msi001_dev *dev; int ret; dev_dbg(&spi->dev, "\n"); - s = kzalloc(sizeof(struct msi001), GFP_KERNEL); - if (s == NULL) { + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) { ret = -ENOMEM; - dev_dbg(&spi->dev, "Could not allocate memory for msi001\n"); - goto err_kfree; + goto err; } - s->spi = spi; - s->f_tuner = bands[0].rangelow; - v4l2_spi_subdev_init(&s->sd, spi, &msi001_ops); + dev->spi = spi; + dev->f_tuner = bands[0].rangelow; + v4l2_spi_subdev_init(&dev->sd, spi, &msi001_ops); /* Register controls */ - v4l2_ctrl_handler_init(&s->hdl, 5); - s->bandwidth_auto = v4l2_ctrl_new_std(&s->hdl, &msi001_ctrl_ops, + v4l2_ctrl_handler_init(&dev->hdl, 5); + dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, &msi001_ctrl_ops, V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 0, 1, 1, 1); - s->bandwidth = v4l2_ctrl_new_std(&s->hdl, &msi001_ctrl_ops, + dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, &msi001_ctrl_ops, V4L2_CID_RF_TUNER_BANDWIDTH, 200000, 8000000, 1, 200000); - v4l2_ctrl_auto_cluster(2, &s->bandwidth_auto, 0, false); - s->lna_gain = v4l2_ctrl_new_std(&s->hdl, &msi001_ctrl_ops, + v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false); + dev->lna_gain = v4l2_ctrl_new_std(&dev->hdl, &msi001_ctrl_ops, V4L2_CID_RF_TUNER_LNA_GAIN, 0, 1, 1, 1); - s->mixer_gain = v4l2_ctrl_new_std(&s->hdl, &msi001_ctrl_ops, + dev->mixer_gain = v4l2_ctrl_new_std(&dev->hdl, &msi001_ctrl_ops, V4L2_CID_RF_TUNER_MIXER_GAIN, 0, 1, 1, 1); - s->if_gain = v4l2_ctrl_new_std(&s->hdl, &msi001_ctrl_ops, + dev->if_gain = v4l2_ctrl_new_std(&dev->hdl, &msi001_ctrl_ops, V4L2_CID_RF_TUNER_IF_GAIN, 0, 59, 1, 0); - if (s->hdl.error) { - ret = s->hdl.error; - dev_err(&s->spi->dev, "Could not initialize controls\n"); + if (dev->hdl.error) { + ret = dev->hdl.error; + dev_err(&spi->dev, "Could not initialize controls\n"); /* control init failed, free handler */ goto err_ctrl_handler_free; } - s->sd.ctrl_handler = &s->hdl; + dev->sd.ctrl_handler = &dev->hdl; return 0; - err_ctrl_handler_free: - v4l2_ctrl_handler_free(&s->hdl); -err_kfree: - kfree(s); + v4l2_ctrl_handler_free(&dev->hdl); + kfree(dev); +err: return ret; } static int msi001_remove(struct spi_device *spi) { struct v4l2_subdev *sd = spi_get_drvdata(spi); - struct msi001 *s = sd_to_msi001(sd); + struct msi001_dev *dev = sd_to_msi001_dev(sd); dev_dbg(&spi->dev, "\n"); @@ -478,26 +498,27 @@ static int msi001_remove(struct spi_device *spi) * Registered by v4l2_spi_new_subdev() from master driver, but we must * unregister it from here. Weird. */ - v4l2_device_unregister_subdev(&s->sd); - v4l2_ctrl_handler_free(&s->hdl); - kfree(s); + v4l2_device_unregister_subdev(&dev->sd); + v4l2_ctrl_handler_free(&dev->hdl); + kfree(dev); return 0; } -static const struct spi_device_id msi001_id[] = { +static const struct spi_device_id msi001_id_table[] = { {"msi001", 0}, {} }; -MODULE_DEVICE_TABLE(spi, msi001_id); +MODULE_DEVICE_TABLE(spi, msi001_id_table); static struct spi_driver msi001_driver = { .driver = { .name = "msi001", .owner = THIS_MODULE, + .suppress_bind_attrs = true, }, .probe = msi001_probe, .remove = msi001_remove, - .id_table = msi001_id, + .id_table = msi001_id_table, }; module_spi_driver(msi001_driver); -- cgit v1.2.3-54-g00ecf