[media] e4000: implement V4L2 subdevice tuner and core ops
Implement V4L2 subdevice tuner and core ops. After that this driver is hybrid driver implementing both V4L2 and DVB ops. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>steinar/wifi_calib_4_9_kernel
Antti Palosaari
Mauro Carvalho Chehab
parent
f8b9b871f8
commit
c7861bb048
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@ -20,9 +20,8 @@
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#include "e4000_priv.h"
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static int e4000_init(struct dvb_frontend *fe)
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static int e4000_init(struct e4000_dev *dev)
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{
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struct e4000_dev *dev = fe->tuner_priv;
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struct i2c_client *client = dev->client;
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int ret;
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@ -89,9 +88,8 @@ err:
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return ret;
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}
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static int e4000_sleep(struct dvb_frontend *fe)
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static int e4000_sleep(struct e4000_dev *dev)
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{
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struct e4000_dev *dev = fe->tuner_priv;
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struct i2c_client *client = dev->client;
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int ret;
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@ -109,19 +107,18 @@ err:
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return ret;
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}
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static int e4000_set_params(struct dvb_frontend *fe)
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static int e4000_set_params(struct e4000_dev *dev)
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{
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struct e4000_dev *dev = fe->tuner_priv;
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struct i2c_client *client = dev->client;
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struct dtv_frontend_properties *c = &fe->dtv_property_cache;
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int ret, i;
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unsigned int div_n, k, k_cw, div_out;
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u64 f_vco;
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u8 buf[5], i_data[4], q_data[4];
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dev_dbg(&client->dev,
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"delivery_system=%d frequency=%u bandwidth_hz=%u\n",
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c->delivery_system, c->frequency, c->bandwidth_hz);
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if (!dev->active) {
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dev_dbg(&client->dev, "tuner is sleeping\n");
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return 0;
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}
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/* gain control manual */
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ret = regmap_write(dev->regmap, 0x1a, 0x00);
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@ -144,7 +141,7 @@ static int e4000_set_params(struct dvb_frontend *fe)
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* +-------+
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*/
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for (i = 0; i < ARRAY_SIZE(e4000_pll_lut); i++) {
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if (c->frequency <= e4000_pll_lut[i].freq)
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if (dev->f_frequency <= e4000_pll_lut[i].freq)
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break;
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}
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if (i == ARRAY_SIZE(e4000_pll_lut)) {
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@ -154,14 +151,15 @@ static int e4000_set_params(struct dvb_frontend *fe)
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#define F_REF dev->clk
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div_out = e4000_pll_lut[i].div_out;
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f_vco = (u64) c->frequency * div_out;
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f_vco = (u64) dev->f_frequency * div_out;
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/* calculate PLL integer and fractional control word */
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div_n = div_u64_rem(f_vco, F_REF, &k);
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k_cw = div_u64((u64) k * 0x10000, F_REF);
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dev_dbg(&client->dev,
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"frequency=%u f_vco=%llu F_REF=%u div_n=%u k=%u k_cw=%04x div_out=%u\n",
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c->frequency, f_vco, F_REF, div_n, k, k_cw, div_out);
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"frequency=%u bandwidth=%u f_vco=%llu F_REF=%u div_n=%u k=%u k_cw=%04x div_out=%u\n",
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dev->f_frequency, dev->f_bandwidth, f_vco, F_REF, div_n, k,
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k_cw, div_out);
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buf[0] = div_n;
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buf[1] = (k_cw >> 0) & 0xff;
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@ -174,7 +172,7 @@ static int e4000_set_params(struct dvb_frontend *fe)
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/* LNA filter (RF filter) */
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for (i = 0; i < ARRAY_SIZE(e400_lna_filter_lut); i++) {
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if (c->frequency <= e400_lna_filter_lut[i].freq)
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if (dev->f_frequency <= e400_lna_filter_lut[i].freq)
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break;
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}
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if (i == ARRAY_SIZE(e400_lna_filter_lut)) {
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@ -188,7 +186,7 @@ static int e4000_set_params(struct dvb_frontend *fe)
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/* IF filters */
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for (i = 0; i < ARRAY_SIZE(e4000_if_filter_lut); i++) {
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if (c->bandwidth_hz <= e4000_if_filter_lut[i].freq)
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if (dev->f_bandwidth <= e4000_if_filter_lut[i].freq)
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break;
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}
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if (i == ARRAY_SIZE(e4000_if_filter_lut)) {
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@ -205,7 +203,7 @@ static int e4000_set_params(struct dvb_frontend *fe)
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/* frequency band */
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for (i = 0; i < ARRAY_SIZE(e4000_band_lut); i++) {
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if (c->frequency <= e4000_band_lut[i].freq)
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if (dev->f_frequency <= e4000_band_lut[i].freq)
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break;
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}
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if (i == ARRAY_SIZE(e4000_band_lut)) {
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@ -269,19 +267,133 @@ err:
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return ret;
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}
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static int e4000_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
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/*
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* V4L2 API
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*/
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#if IS_ENABLED(CONFIG_VIDEO_V4L2)
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static const struct v4l2_frequency_band bands[] = {
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{
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.type = V4L2_TUNER_RF,
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.index = 0,
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.capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
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.rangelow = 59000000,
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.rangehigh = 1105000000,
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},
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{
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.type = V4L2_TUNER_RF,
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.index = 1,
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.capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
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.rangelow = 1249000000,
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.rangehigh = 2208000000,
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},
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};
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static inline struct e4000_dev *e4000_subdev_to_dev(struct v4l2_subdev *sd)
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{
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struct e4000_dev *dev = fe->tuner_priv;
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return container_of(sd, struct e4000_dev, sd);
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}
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static int e4000_s_power(struct v4l2_subdev *sd, int on)
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{
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struct e4000_dev *dev = e4000_subdev_to_dev(sd);
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struct i2c_client *client = dev->client;
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int ret;
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dev_dbg(&client->dev, "on=%d\n", on);
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if (on)
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ret = e4000_init(dev);
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else
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ret = e4000_sleep(dev);
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if (ret)
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return ret;
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return e4000_set_params(dev);
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}
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static const struct v4l2_subdev_core_ops e4000_subdev_core_ops = {
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.s_power = e4000_s_power,
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};
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static int e4000_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *v)
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{
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struct e4000_dev *dev = e4000_subdev_to_dev(sd);
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struct i2c_client *client = dev->client;
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dev_dbg(&client->dev, "\n");
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*frequency = 0; /* Zero-IF */
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dev_dbg(&client->dev, "index=%d\n", v->index);
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strlcpy(v->name, "Elonics E4000", sizeof(v->name));
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v->type = V4L2_TUNER_RF;
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v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
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v->rangelow = bands[0].rangelow;
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v->rangehigh = bands[1].rangehigh;
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return 0;
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}
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#if IS_ENABLED(CONFIG_VIDEO_V4L2)
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static int e4000_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *v)
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{
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struct e4000_dev *dev = e4000_subdev_to_dev(sd);
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struct i2c_client *client = dev->client;
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dev_dbg(&client->dev, "index=%d\n", v->index);
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return 0;
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}
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static int e4000_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
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{
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struct e4000_dev *dev = e4000_subdev_to_dev(sd);
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struct i2c_client *client = dev->client;
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dev_dbg(&client->dev, "tuner=%d\n", f->tuner);
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f->frequency = dev->f_frequency;
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return 0;
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}
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static int e4000_s_frequency(struct v4l2_subdev *sd,
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const struct v4l2_frequency *f)
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{
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struct e4000_dev *dev = e4000_subdev_to_dev(sd);
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struct i2c_client *client = dev->client;
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dev_dbg(&client->dev, "tuner=%d type=%d frequency=%u\n",
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f->tuner, f->type, f->frequency);
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dev->f_frequency = clamp_t(unsigned int, f->frequency,
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bands[0].rangelow, bands[1].rangehigh);
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return e4000_set_params(dev);
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}
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static int e4000_enum_freq_bands(struct v4l2_subdev *sd,
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struct v4l2_frequency_band *band)
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{
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struct e4000_dev *dev = e4000_subdev_to_dev(sd);
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struct i2c_client *client = dev->client;
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dev_dbg(&client->dev, "tuner=%d type=%d index=%d\n",
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band->tuner, band->type, band->index);
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if (band->index >= ARRAY_SIZE(bands))
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return -EINVAL;
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band->capability = bands[band->index].capability;
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band->rangelow = bands[band->index].rangelow;
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band->rangehigh = bands[band->index].rangehigh;
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return 0;
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}
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static const struct v4l2_subdev_tuner_ops e4000_subdev_tuner_ops = {
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.g_tuner = e4000_g_tuner,
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.s_tuner = e4000_s_tuner,
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.g_frequency = e4000_g_frequency,
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.s_frequency = e4000_s_frequency,
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.enum_freq_bands = e4000_enum_freq_bands,
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};
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static const struct v4l2_subdev_ops e4000_subdev_ops = {
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.core = &e4000_subdev_core_ops,
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.tuner = &e4000_subdev_tuner_ops,
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};
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static int e4000_set_lna_gain(struct dvb_frontend *fe)
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{
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struct e4000_dev *dev = fe->tuner_priv;
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@ -434,7 +546,6 @@ static int e4000_s_ctrl(struct v4l2_ctrl *ctrl)
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{
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struct e4000_dev *dev = container_of(ctrl->handler, struct e4000_dev, hdl);
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struct i2c_client *client = dev->client;
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struct dtv_frontend_properties *c = &dev->fe->dtv_property_cache;
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int ret;
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if (!dev->active)
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@ -443,8 +554,13 @@ static int e4000_s_ctrl(struct v4l2_ctrl *ctrl)
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switch (ctrl->id) {
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case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO:
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case V4L2_CID_RF_TUNER_BANDWIDTH:
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c->bandwidth_hz = dev->bandwidth->val;
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ret = e4000_set_params(dev->fe);
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/*
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* TODO: Auto logic does not work 100% correctly as tuner driver
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* do not have information to calculate maximum suitable
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* bandwidth. Calculating it is responsible of master driver.
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*/
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dev->f_bandwidth = dev->bandwidth->val;
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ret = e4000_set_params(dev);
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break;
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case V4L2_CID_RF_TUNER_LNA_GAIN_AUTO:
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case V4L2_CID_RF_TUNER_LNA_GAIN:
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@ -473,24 +589,49 @@ static const struct v4l2_ctrl_ops e4000_ctrl_ops = {
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};
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#endif
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static const struct dvb_tuner_ops e4000_tuner_ops = {
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/*
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* DVB API
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*/
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static int e4000_dvb_set_params(struct dvb_frontend *fe)
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{
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struct e4000_dev *dev = fe->tuner_priv;
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struct dtv_frontend_properties *c = &fe->dtv_property_cache;
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dev->f_frequency = c->frequency;
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dev->f_bandwidth = c->bandwidth_hz;
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return e4000_set_params(dev);
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}
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static int e4000_dvb_init(struct dvb_frontend *fe)
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{
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return e4000_init(fe->tuner_priv);
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}
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static int e4000_dvb_sleep(struct dvb_frontend *fe)
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{
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return e4000_sleep(fe->tuner_priv);
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}
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static int e4000_dvb_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
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{
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*frequency = 0; /* Zero-IF */
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return 0;
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}
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static const struct dvb_tuner_ops e4000_dvb_tuner_ops = {
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.info = {
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.name = "Elonics E4000",
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.frequency_min = 174000000,
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.frequency_max = 862000000,
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},
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.init = e4000_init,
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.sleep = e4000_sleep,
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.set_params = e4000_set_params,
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.init = e4000_dvb_init,
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.sleep = e4000_dvb_sleep,
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.set_params = e4000_dvb_set_params,
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.get_if_frequency = e4000_get_if_frequency,
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.get_if_frequency = e4000_dvb_get_if_frequency,
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};
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/*
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* Use V4L2 subdev to carry V4L2 control handler, even we don't implement
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* subdev itself, just to avoid reinventing the wheel.
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*/
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static int e4000_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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@ -569,10 +710,13 @@ static int e4000_probe(struct i2c_client *client,
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}
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dev->sd.ctrl_handler = &dev->hdl;
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dev->f_frequency = bands[0].rangelow;
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dev->f_bandwidth = dev->bandwidth->val;
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v4l2_i2c_subdev_init(&dev->sd, client, &e4000_subdev_ops);
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#endif
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fe->tuner_priv = dev;
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memcpy(&fe->ops.tuner_ops, &e4000_tuner_ops,
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sizeof(struct dvb_tuner_ops));
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memcpy(&fe->ops.tuner_ops, &e4000_dvb_tuner_ops,
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sizeof(fe->ops.tuner_ops));
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v4l2_set_subdevdata(&dev->sd, client);
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i2c_set_clientdata(client, &dev->sd);
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@ -34,6 +34,8 @@ struct e4000_dev {
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struct dvb_frontend *fe;
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struct v4l2_subdev sd;
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bool active;
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unsigned int f_frequency;
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unsigned int f_bandwidth;
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/* Controls */
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struct v4l2_ctrl_handler hdl;
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