#include "fc2580_priv.h"
-/* Max transfer size done by I2C transfer functions */
-#define MAX_XFER_SIZE 64
-
/*
* TODO:
* I2C write and read works only for one single register. Multiple registers
* could not be accessed using normal register address auto-increment.
* There could be (very likely) register to change that behavior....
- *
- * Due to that limitation functions:
- * fc2580_wr_regs()
- * fc2580_rd_regs()
- * could not be used for accessing more than one register at once.
- *
- * TODO:
- * Currently it blind writes bunch of static registers from the
- * fc2580_freq_regs_lut[] when fc2580_set_params() is called. Add some
- * logic to reduce unneeded register writes.
*/
-/* write multiple registers */
-static int fc2580_wr_regs(struct fc2580_priv *priv, u8 reg, u8 *val, int len)
-{
- int ret;
- u8 buf[MAX_XFER_SIZE];
- struct i2c_msg msg[1] = {
- {
- .addr = priv->cfg->i2c_addr,
- .flags = 0,
- .len = 1 + len,
- .buf = buf,
- }
- };
-
- if (1 + len > sizeof(buf)) {
- dev_warn(&priv->i2c->dev,
- "%s: i2c wr reg=%04x: len=%d is too big!\n",
- KBUILD_MODNAME, reg, len);
- return -EINVAL;
- }
-
- buf[0] = reg;
- memcpy(&buf[1], val, len);
-
- ret = i2c_transfer(priv->i2c, msg, 1);
- if (ret == 1) {
- ret = 0;
- } else {
- dev_warn(&priv->i2c->dev, "%s: i2c wr failed=%d reg=%02x " \
- "len=%d\n", KBUILD_MODNAME, ret, reg, len);
- ret = -EREMOTEIO;
- }
- return ret;
-}
-
-/* read multiple registers */
-static int fc2580_rd_regs(struct fc2580_priv *priv, u8 reg, u8 *val, int len)
-{
- int ret;
- u8 buf[MAX_XFER_SIZE];
- struct i2c_msg msg[2] = {
- {
- .addr = priv->cfg->i2c_addr,
- .flags = 0,
- .len = 1,
- .buf = ®,
- }, {
- .addr = priv->cfg->i2c_addr,
- .flags = I2C_M_RD,
- .len = len,
- .buf = buf,
- }
- };
-
- if (len > sizeof(buf)) {
- dev_warn(&priv->i2c->dev,
- "%s: i2c rd reg=%04x: len=%d is too big!\n",
- KBUILD_MODNAME, reg, len);
- return -EINVAL;
- }
-
- ret = i2c_transfer(priv->i2c, msg, 2);
- if (ret == 2) {
- memcpy(val, buf, len);
- ret = 0;
- } else {
- dev_warn(&priv->i2c->dev, "%s: i2c rd failed=%d reg=%02x " \
- "len=%d\n", KBUILD_MODNAME, ret, reg, len);
- ret = -EREMOTEIO;
- }
-
- return ret;
-}
-
-/* write single register */
-static int fc2580_wr_reg(struct fc2580_priv *priv, u8 reg, u8 val)
-{
- return fc2580_wr_regs(priv, reg, &val, 1);
-}
-
-/* read single register */
-static int fc2580_rd_reg(struct fc2580_priv *priv, u8 reg, u8 *val)
-{
- return fc2580_rd_regs(priv, reg, val, 1);
-}
-
/* write single register conditionally only when value differs from 0xff
* XXX: This is special routine meant only for writing fc2580_freq_regs_lut[]
* values. Do not use for the other purposes. */
-static int fc2580_wr_reg_ff(struct fc2580_priv *priv, u8 reg, u8 val)
+static int fc2580_wr_reg_ff(struct fc2580_dev *dev, u8 reg, u8 val)
{
if (val == 0xff)
return 0;
else
- return fc2580_wr_regs(priv, reg, &val, 1);
+ return regmap_write(dev->regmap, reg, val);
}
-static int fc2580_set_params(struct dvb_frontend *fe)
+static int fc2580_set_params(struct fc2580_dev *dev)
{
- struct fc2580_priv *priv = fe->tuner_priv;
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- int ret = 0, i;
- unsigned int r_val, n_val, k_val, k_val_reg, f_ref;
- u8 tmp_val, r18_val;
+ struct i2c_client *client = dev->client;
+ int ret, i;
+ unsigned int uitmp, div_ref, div_ref_val, div_n, k, k_cw, div_out;
u64 f_vco;
+ u8 synth_config;
+ unsigned long timeout;
+
+ if (!dev->active) {
+ dev_dbg(&client->dev, "tuner is sleeping\n");
+ return 0;
+ }
/*
- * Fractional-N synthesizer/PLL.
- * Most likely all those PLL calculations are not correct. I am not
- * sure, but it looks like it is divider based Fractional-N synthesizer.
- * There is divider for reference clock too?
- * Anyhow, synthesizer calculation results seems to be quite correct.
+ * Fractional-N synthesizer
+ *
+ * +---------------------------------------+
+ * v |
+ * Fref +----+ +----+ +-------+ +----+ +------+ +---+
+ * ------> | /R | --> | PD | --> | VCO | ------> | /2 | --> | /N.F | <-- | K |
+ * +----+ +----+ +-------+ +----+ +------+ +---+
+ * |
+ * |
+ * v
+ * +-------+ Fout
+ * | /Rout | ------>
+ * +-------+
*/
-
- dev_dbg(&priv->i2c->dev, "%s: delivery_system=%d frequency=%d " \
- "bandwidth_hz=%d\n", __func__,
- c->delivery_system, c->frequency, c->bandwidth_hz);
-
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 1);
-
- /* PLL */
for (i = 0; i < ARRAY_SIZE(fc2580_pll_lut); i++) {
- if (c->frequency <= fc2580_pll_lut[i].freq)
+ if (dev->f_frequency <= fc2580_pll_lut[i].freq)
break;
}
-
- if (i == ARRAY_SIZE(fc2580_pll_lut))
+ if (i == ARRAY_SIZE(fc2580_pll_lut)) {
+ ret = -EINVAL;
goto err;
+ }
- f_vco = c->frequency;
- f_vco *= fc2580_pll_lut[i].div;
-
- if (f_vco >= 2600000000UL)
- tmp_val = 0x0e | fc2580_pll_lut[i].band;
+ #define DIV_PRE_N 2
+ #define F_REF dev->clk
+ div_out = fc2580_pll_lut[i].div_out;
+ f_vco = (u64) dev->f_frequency * div_out;
+ synth_config = fc2580_pll_lut[i].band;
+ if (f_vco < 2600000000ULL)
+ synth_config |= 0x06;
else
- tmp_val = 0x06 | fc2580_pll_lut[i].band;
-
- ret = fc2580_wr_reg(priv, 0x02, tmp_val);
- if (ret < 0)
- goto err;
-
- if (f_vco >= 2UL * 76 * priv->cfg->clock) {
- r_val = 1;
- r18_val = 0x00;
- } else if (f_vco >= 1UL * 76 * priv->cfg->clock) {
- r_val = 2;
- r18_val = 0x10;
+ synth_config |= 0x0e;
+
+ /* select reference divider R (keep PLL div N in valid range) */
+ #define DIV_N_MIN 76
+ if (f_vco >= div_u64((u64) DIV_PRE_N * DIV_N_MIN * F_REF, 1)) {
+ div_ref = 1;
+ div_ref_val = 0x00;
+ } else if (f_vco >= div_u64((u64) DIV_PRE_N * DIV_N_MIN * F_REF, 2)) {
+ div_ref = 2;
+ div_ref_val = 0x10;
} else {
- r_val = 4;
- r18_val = 0x20;
+ div_ref = 4;
+ div_ref_val = 0x20;
}
- f_ref = 2UL * priv->cfg->clock / r_val;
- n_val = div_u64_rem(f_vco, f_ref, &k_val);
- k_val_reg = div_u64(1ULL * k_val * (1 << 20), f_ref);
+ /* calculate PLL integer and fractional control word */
+ uitmp = DIV_PRE_N * F_REF / div_ref;
+ div_n = div_u64_rem(f_vco, uitmp, &k);
+ k_cw = div_u64((u64) k * 0x100000, uitmp);
- ret = fc2580_wr_reg(priv, 0x18, r18_val | ((k_val_reg >> 16) & 0xff));
- if (ret < 0)
- goto err;
+ dev_dbg(&client->dev,
+ "frequency=%u bandwidth=%u f_vco=%llu F_REF=%u div_ref=%u div_n=%u k=%u div_out=%u k_cw=%0x\n",
+ dev->f_frequency, dev->f_bandwidth, f_vco, F_REF, div_ref,
+ div_n, k, div_out, k_cw);
- ret = fc2580_wr_reg(priv, 0x1a, (k_val_reg >> 8) & 0xff);
- if (ret < 0)
+ ret = regmap_write(dev->regmap, 0x02, synth_config);
+ if (ret)
goto err;
- ret = fc2580_wr_reg(priv, 0x1b, (k_val_reg >> 0) & 0xff);
- if (ret < 0)
+ ret = regmap_write(dev->regmap, 0x18, div_ref_val << 0 | k_cw >> 16);
+ if (ret)
goto err;
- ret = fc2580_wr_reg(priv, 0x1c, n_val);
- if (ret < 0)
+ ret = regmap_write(dev->regmap, 0x1a, (k_cw >> 8) & 0xff);
+ if (ret)
goto err;
- if (priv->cfg->clock >= 28000000) {
- ret = fc2580_wr_reg(priv, 0x4b, 0x22);
- if (ret < 0)
- goto err;
- }
-
- if (fc2580_pll_lut[i].band == 0x00) {
- if (c->frequency <= 794000000)
- tmp_val = 0x9f;
- else
- tmp_val = 0x8f;
+ ret = regmap_write(dev->regmap, 0x1b, (k_cw >> 0) & 0xff);
+ if (ret)
+ goto err;
- ret = fc2580_wr_reg(priv, 0x2d, tmp_val);
- if (ret < 0)
- goto err;
- }
+ ret = regmap_write(dev->regmap, 0x1c, div_n);
+ if (ret)
+ goto err;
/* registers */
for (i = 0; i < ARRAY_SIZE(fc2580_freq_regs_lut); i++) {
- if (c->frequency <= fc2580_freq_regs_lut[i].freq)
+ if (dev->f_frequency <= fc2580_freq_regs_lut[i].freq)
break;
}
-
- if (i == ARRAY_SIZE(fc2580_freq_regs_lut))
+ if (i == ARRAY_SIZE(fc2580_freq_regs_lut)) {
+ ret = -EINVAL;
goto err;
+ }
- ret = fc2580_wr_reg_ff(priv, 0x25, fc2580_freq_regs_lut[i].r25_val);
- if (ret < 0)
+ ret = fc2580_wr_reg_ff(dev, 0x25, fc2580_freq_regs_lut[i].r25_val);
+ if (ret)
goto err;
- ret = fc2580_wr_reg_ff(priv, 0x27, fc2580_freq_regs_lut[i].r27_val);
- if (ret < 0)
+ ret = fc2580_wr_reg_ff(dev, 0x27, fc2580_freq_regs_lut[i].r27_val);
+ if (ret)
goto err;
- ret = fc2580_wr_reg_ff(priv, 0x28, fc2580_freq_regs_lut[i].r28_val);
- if (ret < 0)
+ ret = fc2580_wr_reg_ff(dev, 0x28, fc2580_freq_regs_lut[i].r28_val);
+ if (ret)
goto err;
- ret = fc2580_wr_reg_ff(priv, 0x29, fc2580_freq_regs_lut[i].r29_val);
- if (ret < 0)
+ ret = fc2580_wr_reg_ff(dev, 0x29, fc2580_freq_regs_lut[i].r29_val);
+ if (ret)
goto err;
- ret = fc2580_wr_reg_ff(priv, 0x2b, fc2580_freq_regs_lut[i].r2b_val);
- if (ret < 0)
+ ret = fc2580_wr_reg_ff(dev, 0x2b, fc2580_freq_regs_lut[i].r2b_val);
+ if (ret)
goto err;
- ret = fc2580_wr_reg_ff(priv, 0x2c, fc2580_freq_regs_lut[i].r2c_val);
- if (ret < 0)
+ ret = fc2580_wr_reg_ff(dev, 0x2c, fc2580_freq_regs_lut[i].r2c_val);
+ if (ret)
goto err;
- ret = fc2580_wr_reg_ff(priv, 0x2d, fc2580_freq_regs_lut[i].r2d_val);
- if (ret < 0)
+ ret = fc2580_wr_reg_ff(dev, 0x2d, fc2580_freq_regs_lut[i].r2d_val);
+ if (ret)
goto err;
- ret = fc2580_wr_reg_ff(priv, 0x30, fc2580_freq_regs_lut[i].r30_val);
- if (ret < 0)
+ ret = fc2580_wr_reg_ff(dev, 0x30, fc2580_freq_regs_lut[i].r30_val);
+ if (ret)
goto err;
- ret = fc2580_wr_reg_ff(priv, 0x44, fc2580_freq_regs_lut[i].r44_val);
- if (ret < 0)
+ ret = fc2580_wr_reg_ff(dev, 0x44, fc2580_freq_regs_lut[i].r44_val);
+ if (ret)
goto err;
- ret = fc2580_wr_reg_ff(priv, 0x50, fc2580_freq_regs_lut[i].r50_val);
- if (ret < 0)
+ ret = fc2580_wr_reg_ff(dev, 0x50, fc2580_freq_regs_lut[i].r50_val);
+ if (ret)
goto err;
- ret = fc2580_wr_reg_ff(priv, 0x53, fc2580_freq_regs_lut[i].r53_val);
- if (ret < 0)
+ ret = fc2580_wr_reg_ff(dev, 0x53, fc2580_freq_regs_lut[i].r53_val);
+ if (ret)
goto err;
- ret = fc2580_wr_reg_ff(priv, 0x5f, fc2580_freq_regs_lut[i].r5f_val);
- if (ret < 0)
+ ret = fc2580_wr_reg_ff(dev, 0x5f, fc2580_freq_regs_lut[i].r5f_val);
+ if (ret)
goto err;
- ret = fc2580_wr_reg_ff(priv, 0x61, fc2580_freq_regs_lut[i].r61_val);
- if (ret < 0)
+ ret = fc2580_wr_reg_ff(dev, 0x61, fc2580_freq_regs_lut[i].r61_val);
+ if (ret)
goto err;
- ret = fc2580_wr_reg_ff(priv, 0x62, fc2580_freq_regs_lut[i].r62_val);
- if (ret < 0)
+ ret = fc2580_wr_reg_ff(dev, 0x62, fc2580_freq_regs_lut[i].r62_val);
+ if (ret)
goto err;
- ret = fc2580_wr_reg_ff(priv, 0x63, fc2580_freq_regs_lut[i].r63_val);
- if (ret < 0)
+ ret = fc2580_wr_reg_ff(dev, 0x63, fc2580_freq_regs_lut[i].r63_val);
+ if (ret)
goto err;
- ret = fc2580_wr_reg_ff(priv, 0x67, fc2580_freq_regs_lut[i].r67_val);
- if (ret < 0)
+ ret = fc2580_wr_reg_ff(dev, 0x67, fc2580_freq_regs_lut[i].r67_val);
+ if (ret)
goto err;
- ret = fc2580_wr_reg_ff(priv, 0x68, fc2580_freq_regs_lut[i].r68_val);
- if (ret < 0)
+ ret = fc2580_wr_reg_ff(dev, 0x68, fc2580_freq_regs_lut[i].r68_val);
+ if (ret)
goto err;
- ret = fc2580_wr_reg_ff(priv, 0x69, fc2580_freq_regs_lut[i].r69_val);
- if (ret < 0)
+ ret = fc2580_wr_reg_ff(dev, 0x69, fc2580_freq_regs_lut[i].r69_val);
+ if (ret)
goto err;
- ret = fc2580_wr_reg_ff(priv, 0x6a, fc2580_freq_regs_lut[i].r6a_val);
- if (ret < 0)
+ ret = fc2580_wr_reg_ff(dev, 0x6a, fc2580_freq_regs_lut[i].r6a_val);
+ if (ret)
goto err;
- ret = fc2580_wr_reg_ff(priv, 0x6b, fc2580_freq_regs_lut[i].r6b_val);
- if (ret < 0)
+ ret = fc2580_wr_reg_ff(dev, 0x6b, fc2580_freq_regs_lut[i].r6b_val);
+ if (ret)
goto err;
- ret = fc2580_wr_reg_ff(priv, 0x6c, fc2580_freq_regs_lut[i].r6c_val);
- if (ret < 0)
+ ret = fc2580_wr_reg_ff(dev, 0x6c, fc2580_freq_regs_lut[i].r6c_val);
+ if (ret)
goto err;
- ret = fc2580_wr_reg_ff(priv, 0x6d, fc2580_freq_regs_lut[i].r6d_val);
- if (ret < 0)
+ ret = fc2580_wr_reg_ff(dev, 0x6d, fc2580_freq_regs_lut[i].r6d_val);
+ if (ret)
goto err;
- ret = fc2580_wr_reg_ff(priv, 0x6e, fc2580_freq_regs_lut[i].r6e_val);
- if (ret < 0)
+ ret = fc2580_wr_reg_ff(dev, 0x6e, fc2580_freq_regs_lut[i].r6e_val);
+ if (ret)
goto err;
- ret = fc2580_wr_reg_ff(priv, 0x6f, fc2580_freq_regs_lut[i].r6f_val);
- if (ret < 0)
+ ret = fc2580_wr_reg_ff(dev, 0x6f, fc2580_freq_regs_lut[i].r6f_val);
+ if (ret)
goto err;
/* IF filters */
for (i = 0; i < ARRAY_SIZE(fc2580_if_filter_lut); i++) {
- if (c->bandwidth_hz <= fc2580_if_filter_lut[i].freq)
+ if (dev->f_bandwidth <= fc2580_if_filter_lut[i].freq)
break;
}
-
- if (i == ARRAY_SIZE(fc2580_if_filter_lut))
- goto err;
-
- ret = fc2580_wr_reg(priv, 0x36, fc2580_if_filter_lut[i].r36_val);
- if (ret < 0)
+ if (i == ARRAY_SIZE(fc2580_if_filter_lut)) {
+ ret = -EINVAL;
goto err;
+ }
- ret = fc2580_wr_reg(priv, 0x37, div_u64(1ULL * priv->cfg->clock *
- fc2580_if_filter_lut[i].mul, 1000000000));
- if (ret < 0)
+ ret = regmap_write(dev->regmap, 0x36, fc2580_if_filter_lut[i].r36_val);
+ if (ret)
goto err;
- ret = fc2580_wr_reg(priv, 0x39, fc2580_if_filter_lut[i].r39_val);
- if (ret < 0)
+ uitmp = (unsigned int) 8058000 - (dev->f_bandwidth * 122 / 100 / 2);
+ uitmp = div64_u64((u64) dev->clk * uitmp, 1000000000000ULL);
+ ret = regmap_write(dev->regmap, 0x37, uitmp);
+ if (ret)
goto err;
- /* calibration? */
- ret = fc2580_wr_reg(priv, 0x2e, 0x09);
- if (ret < 0)
+ ret = regmap_write(dev->regmap, 0x39, fc2580_if_filter_lut[i].r39_val);
+ if (ret)
goto err;
- for (i = 0; i < 5; i++) {
- ret = fc2580_rd_reg(priv, 0x2f, &tmp_val);
- if (ret < 0)
+ timeout = jiffies + msecs_to_jiffies(30);
+ for (uitmp = ~0xc0; !time_after(jiffies, timeout) && uitmp != 0xc0;) {
+ /* trigger filter */
+ ret = regmap_write(dev->regmap, 0x2e, 0x09);
+ if (ret)
goto err;
- /* done when [7:6] are set */
- if ((tmp_val & 0xc0) == 0xc0)
- break;
-
- ret = fc2580_wr_reg(priv, 0x2e, 0x01);
- if (ret < 0)
+ /* locked when [7:6] are set (val: d7 6MHz, d5 7MHz, cd 8MHz) */
+ ret = regmap_read(dev->regmap, 0x2f, &uitmp);
+ if (ret)
goto err;
+ uitmp &= 0xc0;
- ret = fc2580_wr_reg(priv, 0x2e, 0x09);
- if (ret < 0)
+ ret = regmap_write(dev->regmap, 0x2e, 0x01);
+ if (ret)
goto err;
-
- usleep_range(5000, 25000);
}
-
- dev_dbg(&priv->i2c->dev, "%s: loop=%i\n", __func__, i);
-
- ret = fc2580_wr_reg(priv, 0x2e, 0x01);
- if (ret < 0)
- goto err;
-
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 0);
+ if (uitmp != 0xc0)
+ dev_dbg(&client->dev, "filter did not lock %02x\n", uitmp);
return 0;
err:
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 0);
-
- dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
+ dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
-static int fc2580_init(struct dvb_frontend *fe)
+static int fc2580_init(struct fc2580_dev *dev)
{
- struct fc2580_priv *priv = fe->tuner_priv;
+ struct i2c_client *client = dev->client;
int ret, i;
- dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
-
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 1);
+ dev_dbg(&client->dev, "\n");
for (i = 0; i < ARRAY_SIZE(fc2580_init_reg_vals); i++) {
- ret = fc2580_wr_reg(priv, fc2580_init_reg_vals[i].reg,
+ ret = regmap_write(dev->regmap, fc2580_init_reg_vals[i].reg,
fc2580_init_reg_vals[i].val);
- if (ret < 0)
+ if (ret)
goto err;
}
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 0);
-
+ dev->active = true;
return 0;
err:
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 0);
-
- dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
+ dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
-static int fc2580_sleep(struct dvb_frontend *fe)
+static int fc2580_sleep(struct fc2580_dev *dev)
{
- struct fc2580_priv *priv = fe->tuner_priv;
+ struct i2c_client *client = dev->client;
int ret;
- dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
+ dev_dbg(&client->dev, "\n");
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 1);
+ dev->active = false;
- ret = fc2580_wr_reg(priv, 0x02, 0x0a);
- if (ret < 0)
+ ret = regmap_write(dev->regmap, 0x02, 0x0a);
+ if (ret)
goto err;
-
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 0);
-
return 0;
err:
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 0);
-
- dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
+ dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
-static int fc2580_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
+/*
+ * DVB API
+ */
+static int fc2580_dvb_set_params(struct dvb_frontend *fe)
{
- struct fc2580_priv *priv = fe->tuner_priv;
-
- dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
-
- *frequency = 0; /* Zero-IF */
+ struct fc2580_dev *dev = fe->tuner_priv;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- return 0;
+ dev->f_frequency = c->frequency;
+ dev->f_bandwidth = c->bandwidth_hz;
+ return fc2580_set_params(dev);
}
-static int fc2580_release(struct dvb_frontend *fe)
+static int fc2580_dvb_init(struct dvb_frontend *fe)
{
- struct fc2580_priv *priv = fe->tuner_priv;
-
- dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
+ return fc2580_init(fe->tuner_priv);
+}
- kfree(fe->tuner_priv);
+static int fc2580_dvb_sleep(struct dvb_frontend *fe)
+{
+ return fc2580_sleep(fe->tuner_priv);
+}
+static int fc2580_dvb_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+ *frequency = 0; /* Zero-IF */
return 0;
}
-static const struct dvb_tuner_ops fc2580_tuner_ops = {
+static const struct dvb_tuner_ops fc2580_dvb_tuner_ops = {
.info = {
.name = "FCI FC2580",
.frequency_min = 174000000,
.frequency_max = 862000000,
},
- .release = fc2580_release,
+ .init = fc2580_dvb_init,
+ .sleep = fc2580_dvb_sleep,
+ .set_params = fc2580_dvb_set_params,
+
+ .get_if_frequency = fc2580_dvb_get_if_frequency,
+};
+
+/*
+ * V4L2 API
+ */
+#if IS_ENABLED(CONFIG_VIDEO_V4L2)
+static const struct v4l2_frequency_band bands[] = {
+ {
+ .type = V4L2_TUNER_RF,
+ .index = 0,
+ .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
+ .rangelow = 130000000,
+ .rangehigh = 2000000000,
+ },
+};
+
+static inline struct fc2580_dev *fc2580_subdev_to_dev(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct fc2580_dev, subdev);
+}
+
+static int fc2580_s_power(struct v4l2_subdev *sd, int on)
+{
+ struct fc2580_dev *dev = fc2580_subdev_to_dev(sd);
+ struct i2c_client *client = dev->client;
+ int ret;
+
+ dev_dbg(&client->dev, "on=%d\n", on);
+
+ if (on)
+ ret = fc2580_init(dev);
+ else
+ ret = fc2580_sleep(dev);
+ if (ret)
+ return ret;
+
+ return fc2580_set_params(dev);
+}
+
+static const struct v4l2_subdev_core_ops fc2580_subdev_core_ops = {
+ .s_power = fc2580_s_power,
+};
+
+static int fc2580_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *v)
+{
+ struct fc2580_dev *dev = fc2580_subdev_to_dev(sd);
+ struct i2c_client *client = dev->client;
+
+ dev_dbg(&client->dev, "index=%d\n", v->index);
+
+ strlcpy(v->name, "FCI FC2580", sizeof(v->name));
+ v->type = V4L2_TUNER_RF;
+ v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
+ v->rangelow = bands[0].rangelow;
+ v->rangehigh = bands[0].rangehigh;
+ return 0;
+}
+
+static int fc2580_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *v)
+{
+ struct fc2580_dev *dev = fc2580_subdev_to_dev(sd);
+ struct i2c_client *client = dev->client;
+
+ dev_dbg(&client->dev, "index=%d\n", v->index);
+ return 0;
+}
+
+static int fc2580_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
+{
+ struct fc2580_dev *dev = fc2580_subdev_to_dev(sd);
+ struct i2c_client *client = dev->client;
+
+ dev_dbg(&client->dev, "tuner=%d\n", f->tuner);
+ f->frequency = dev->f_frequency;
+ return 0;
+}
+
+static int fc2580_s_frequency(struct v4l2_subdev *sd,
+ const struct v4l2_frequency *f)
+{
+ struct fc2580_dev *dev = fc2580_subdev_to_dev(sd);
+ struct i2c_client *client = dev->client;
+
+ dev_dbg(&client->dev, "tuner=%d type=%d frequency=%u\n",
+ f->tuner, f->type, f->frequency);
+
+ dev->f_frequency = clamp_t(unsigned int, f->frequency,
+ bands[0].rangelow, bands[0].rangehigh);
+ return fc2580_set_params(dev);
+}
+
+static int fc2580_enum_freq_bands(struct v4l2_subdev *sd,
+ struct v4l2_frequency_band *band)
+{
+ struct fc2580_dev *dev = fc2580_subdev_to_dev(sd);
+ struct i2c_client *client = dev->client;
+
+ dev_dbg(&client->dev, "tuner=%d type=%d index=%d\n",
+ band->tuner, band->type, band->index);
- .init = fc2580_init,
- .sleep = fc2580_sleep,
- .set_params = fc2580_set_params,
+ if (band->index >= ARRAY_SIZE(bands))
+ return -EINVAL;
- .get_if_frequency = fc2580_get_if_frequency,
+ band->capability = bands[band->index].capability;
+ band->rangelow = bands[band->index].rangelow;
+ band->rangehigh = bands[band->index].rangehigh;
+ return 0;
+}
+
+static const struct v4l2_subdev_tuner_ops fc2580_subdev_tuner_ops = {
+ .g_tuner = fc2580_g_tuner,
+ .s_tuner = fc2580_s_tuner,
+ .g_frequency = fc2580_g_frequency,
+ .s_frequency = fc2580_s_frequency,
+ .enum_freq_bands = fc2580_enum_freq_bands,
+};
+
+static const struct v4l2_subdev_ops fc2580_subdev_ops = {
+ .core = &fc2580_subdev_core_ops,
+ .tuner = &fc2580_subdev_tuner_ops,
};
-struct dvb_frontend *fc2580_attach(struct dvb_frontend *fe,
- struct i2c_adapter *i2c, const struct fc2580_config *cfg)
+static int fc2580_s_ctrl(struct v4l2_ctrl *ctrl)
{
- struct fc2580_priv *priv;
+ struct fc2580_dev *dev = container_of(ctrl->handler, struct fc2580_dev, hdl);
+ struct i2c_client *client = dev->client;
int ret;
- u8 chip_id;
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 1);
+ dev_dbg(&client->dev, "ctrl: id=%d name=%s cur.val=%d val=%d\n",
+ ctrl->id, ctrl->name, ctrl->cur.val, ctrl->val);
+
+ switch (ctrl->id) {
+ case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO:
+ case V4L2_CID_RF_TUNER_BANDWIDTH:
+ /*
+ * TODO: Auto logic does not work 100% correctly as tuner driver
+ * do not have information to calculate maximum suitable
+ * bandwidth. Calculating it is responsible of master driver.
+ */
+ dev->f_bandwidth = dev->bandwidth->val;
+ ret = fc2580_set_params(dev);
+ break;
+ default:
+ dev_dbg(&client->dev, "unknown ctrl");
+ ret = -EINVAL;
+ }
+ return ret;
+}
+
+static const struct v4l2_ctrl_ops fc2580_ctrl_ops = {
+ .s_ctrl = fc2580_s_ctrl,
+};
+#endif
+
+static struct v4l2_subdev *fc2580_get_v4l2_subdev(struct i2c_client *client)
+{
+ struct fc2580_dev *dev = i2c_get_clientdata(client);
+
+ if (dev->subdev.ops)
+ return &dev->subdev;
+ else
+ return NULL;
+}
+
+static int fc2580_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct fc2580_dev *dev;
+ struct fc2580_platform_data *pdata = client->dev.platform_data;
+ struct dvb_frontend *fe = pdata->dvb_frontend;
+ int ret;
+ unsigned int uitmp;
+ static const struct regmap_config regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ };
- priv = kzalloc(sizeof(struct fc2580_priv), GFP_KERNEL);
- if (!priv) {
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev) {
ret = -ENOMEM;
- dev_err(&i2c->dev, "%s: kzalloc() failed\n", KBUILD_MODNAME);
goto err;
}
- priv->cfg = cfg;
- priv->i2c = i2c;
+ if (pdata->clk)
+ dev->clk = pdata->clk;
+ else
+ dev->clk = 16384000; /* internal clock */
+ dev->client = client;
+ dev->regmap = devm_regmap_init_i2c(client, ®map_config);
+ if (IS_ERR(dev->regmap)) {
+ ret = PTR_ERR(dev->regmap);
+ goto err_kfree;
+ }
/* check if the tuner is there */
- ret = fc2580_rd_reg(priv, 0x01, &chip_id);
- if (ret < 0)
- goto err;
+ ret = regmap_read(dev->regmap, 0x01, &uitmp);
+ if (ret)
+ goto err_kfree;
- dev_dbg(&priv->i2c->dev, "%s: chip_id=%02x\n", __func__, chip_id);
+ dev_dbg(&client->dev, "chip_id=%02x\n", uitmp);
- switch (chip_id) {
+ switch (uitmp) {
case 0x56:
case 0x5a:
break;
default:
- goto err;
+ ret = -ENODEV;
+ goto err_kfree;
}
- dev_info(&priv->i2c->dev,
- "%s: FCI FC2580 successfully identified\n",
- KBUILD_MODNAME);
-
- fe->tuner_priv = priv;
- memcpy(&fe->ops.tuner_ops, &fc2580_tuner_ops,
- sizeof(struct dvb_tuner_ops));
+#if IS_ENABLED(CONFIG_VIDEO_V4L2)
+ /* Register controls */
+ v4l2_ctrl_handler_init(&dev->hdl, 2);
+ dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, &fc2580_ctrl_ops,
+ V4L2_CID_RF_TUNER_BANDWIDTH_AUTO,
+ 0, 1, 1, 1);
+ dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, &fc2580_ctrl_ops,
+ V4L2_CID_RF_TUNER_BANDWIDTH,
+ 3000, 10000000, 1, 3000);
+ v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false);
+ if (dev->hdl.error) {
+ ret = dev->hdl.error;
+ dev_err(&client->dev, "Could not initialize controls\n");
+ v4l2_ctrl_handler_free(&dev->hdl);
+ goto err_kfree;
+ }
+ dev->subdev.ctrl_handler = &dev->hdl;
+ dev->f_frequency = bands[0].rangelow;
+ dev->f_bandwidth = dev->bandwidth->val;
+ v4l2_i2c_subdev_init(&dev->subdev, client, &fc2580_subdev_ops);
+#endif
+ fe->tuner_priv = dev;
+ memcpy(&fe->ops.tuner_ops, &fc2580_dvb_tuner_ops,
+ sizeof(fe->ops.tuner_ops));
+ pdata->get_v4l2_subdev = fc2580_get_v4l2_subdev;
+ i2c_set_clientdata(client, dev);
+
+ dev_info(&client->dev, "FCI FC2580 successfully identified\n");
+ return 0;
+err_kfree:
+ kfree(dev);
+err:
+ dev_dbg(&client->dev, "failed=%d\n", ret);
+ return ret;
+}
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 0);
+static int fc2580_remove(struct i2c_client *client)
+{
+ struct fc2580_dev *dev = i2c_get_clientdata(client);
- return fe;
-err:
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 0);
+ dev_dbg(&client->dev, "\n");
- dev_dbg(&i2c->dev, "%s: failed=%d\n", __func__, ret);
- kfree(priv);
- return NULL;
+#if IS_ENABLED(CONFIG_VIDEO_V4L2)
+ v4l2_ctrl_handler_free(&dev->hdl);
+#endif
+ kfree(dev);
+ return 0;
}
-EXPORT_SYMBOL(fc2580_attach);
+
+static const struct i2c_device_id fc2580_id_table[] = {
+ {"fc2580", 0},
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, fc2580_id_table);
+
+static struct i2c_driver fc2580_driver = {
+ .driver = {
+ .name = "fc2580",
+ .suppress_bind_attrs = true,
+ },
+ .probe = fc2580_probe,
+ .remove = fc2580_remove,
+ .id_table = fc2580_id_table,
+};
+
+module_i2c_driver(fc2580_driver);
MODULE_DESCRIPTION("FCI FC2580 silicon tuner driver");
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
Code Review / kvmfornfv.git / blobdiff