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744 lines
17 KiB
744 lines
17 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Elonics E4000 silicon tuner driver |
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* |
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* Copyright (C) 2012 Antti Palosaari <[email protected]> |
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*/ |
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|
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#include "e4000_priv.h" |
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static int e4000_init(struct e4000_dev *dev) |
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{ |
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struct i2c_client *client = dev->client; |
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int ret; |
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dev_dbg(&client->dev, "\n"); |
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/* reset */ |
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ret = regmap_write(dev->regmap, 0x00, 0x01); |
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if (ret) |
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goto err; |
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/* disable output clock */ |
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ret = regmap_write(dev->regmap, 0x06, 0x00); |
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if (ret) |
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goto err; |
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ret = regmap_write(dev->regmap, 0x7a, 0x96); |
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if (ret) |
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goto err; |
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/* configure gains */ |
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ret = regmap_bulk_write(dev->regmap, 0x7e, "\x01\xfe", 2); |
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if (ret) |
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goto err; |
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ret = regmap_write(dev->regmap, 0x82, 0x00); |
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if (ret) |
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goto err; |
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ret = regmap_write(dev->regmap, 0x24, 0x05); |
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if (ret) |
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goto err; |
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ret = regmap_bulk_write(dev->regmap, 0x87, "\x20\x01", 2); |
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if (ret) |
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goto err; |
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ret = regmap_bulk_write(dev->regmap, 0x9f, "\x7f\x07", 2); |
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if (ret) |
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goto err; |
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/* DC offset control */ |
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ret = regmap_write(dev->regmap, 0x2d, 0x1f); |
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if (ret) |
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goto err; |
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ret = regmap_bulk_write(dev->regmap, 0x70, "\x01\x01", 2); |
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if (ret) |
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goto err; |
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/* gain control */ |
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ret = regmap_write(dev->regmap, 0x1a, 0x17); |
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if (ret) |
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goto err; |
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ret = regmap_write(dev->regmap, 0x1f, 0x1a); |
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if (ret) |
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goto err; |
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dev->active = true; |
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return 0; |
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err: |
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dev_dbg(&client->dev, "failed=%d\n", ret); |
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return ret; |
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} |
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static int e4000_sleep(struct e4000_dev *dev) |
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{ |
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struct i2c_client *client = dev->client; |
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int ret; |
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dev_dbg(&client->dev, "\n"); |
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dev->active = false; |
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ret = regmap_write(dev->regmap, 0x00, 0x00); |
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if (ret) |
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goto err; |
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return 0; |
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err: |
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dev_dbg(&client->dev, "failed=%d\n", ret); |
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return ret; |
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} |
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static int e4000_set_params(struct e4000_dev *dev) |
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{ |
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struct i2c_client *client = dev->client; |
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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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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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if (ret) |
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goto err; |
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/* |
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* Fractional-N synthesizer |
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* |
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* +----------------------------+ |
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* v | |
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* Fref +----+ +-------+ +------+ +---+ |
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* ------> | PD | --> | VCO | ------> | /N.F | <-- | K | |
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* +----+ +-------+ +------+ +---+ |
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* | |
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* | |
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* v |
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* +-------+ Fout |
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* | /Rout | ------> |
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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 (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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ret = -EINVAL; |
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goto err; |
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} |
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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) 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 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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buf[2] = (k_cw >> 8) & 0xff; |
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buf[3] = 0x00; |
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buf[4] = e4000_pll_lut[i].div_out_reg; |
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ret = regmap_bulk_write(dev->regmap, 0x09, buf, 5); |
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if (ret) |
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goto err; |
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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 (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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ret = -EINVAL; |
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goto err; |
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} |
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ret = regmap_write(dev->regmap, 0x10, e400_lna_filter_lut[i].val); |
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if (ret) |
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goto err; |
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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 (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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ret = -EINVAL; |
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goto err; |
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} |
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buf[0] = e4000_if_filter_lut[i].reg11_val; |
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buf[1] = e4000_if_filter_lut[i].reg12_val; |
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ret = regmap_bulk_write(dev->regmap, 0x11, buf, 2); |
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if (ret) |
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goto err; |
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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 (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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ret = -EINVAL; |
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goto err; |
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} |
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ret = regmap_write(dev->regmap, 0x07, e4000_band_lut[i].reg07_val); |
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if (ret) |
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goto err; |
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ret = regmap_write(dev->regmap, 0x78, e4000_band_lut[i].reg78_val); |
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if (ret) |
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goto err; |
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/* DC offset */ |
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for (i = 0; i < 4; i++) { |
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if (i == 0) |
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ret = regmap_bulk_write(dev->regmap, 0x15, "\x00\x7e\x24", 3); |
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else if (i == 1) |
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ret = regmap_bulk_write(dev->regmap, 0x15, "\x00\x7f", 2); |
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else if (i == 2) |
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ret = regmap_bulk_write(dev->regmap, 0x15, "\x01", 1); |
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else |
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ret = regmap_bulk_write(dev->regmap, 0x16, "\x7e", 1); |
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if (ret) |
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goto err; |
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ret = regmap_write(dev->regmap, 0x29, 0x01); |
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if (ret) |
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goto err; |
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ret = regmap_bulk_read(dev->regmap, 0x2a, buf, 3); |
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if (ret) |
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goto err; |
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i_data[i] = (((buf[2] >> 0) & 0x3) << 6) | (buf[0] & 0x3f); |
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q_data[i] = (((buf[2] >> 4) & 0x3) << 6) | (buf[1] & 0x3f); |
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} |
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swap(q_data[2], q_data[3]); |
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swap(i_data[2], i_data[3]); |
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ret = regmap_bulk_write(dev->regmap, 0x50, q_data, 4); |
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if (ret) |
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goto err; |
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ret = regmap_bulk_write(dev->regmap, 0x60, i_data, 4); |
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if (ret) |
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goto err; |
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/* gain control auto */ |
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ret = regmap_write(dev->regmap, 0x1a, 0x17); |
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if (ret) |
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goto err; |
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return 0; |
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err: |
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dev_dbg(&client->dev, "failed=%d\n", ret); |
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return ret; |
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} |
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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 = 2208000000UL, |
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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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return container_of(sd, struct e4000_dev, sd); |
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} |
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static int e4000_standby(struct v4l2_subdev *sd) |
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{ |
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struct e4000_dev *dev = e4000_subdev_to_dev(sd); |
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int ret; |
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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 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, "index=%d\n", v->index); |
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strscpy(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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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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.standby = e4000_standby, |
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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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.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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struct i2c_client *client = dev->client; |
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int ret; |
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u8 u8tmp; |
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dev_dbg(&client->dev, "lna auto=%d->%d val=%d->%d\n", |
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dev->lna_gain_auto->cur.val, dev->lna_gain_auto->val, |
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dev->lna_gain->cur.val, dev->lna_gain->val); |
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if (dev->lna_gain_auto->val && dev->if_gain_auto->cur.val) |
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u8tmp = 0x17; |
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else if (dev->lna_gain_auto->val) |
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u8tmp = 0x19; |
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else if (dev->if_gain_auto->cur.val) |
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u8tmp = 0x16; |
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else |
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u8tmp = 0x10; |
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ret = regmap_write(dev->regmap, 0x1a, u8tmp); |
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if (ret) |
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goto err; |
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if (dev->lna_gain_auto->val == false) { |
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ret = regmap_write(dev->regmap, 0x14, dev->lna_gain->val); |
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if (ret) |
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goto err; |
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} |
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return 0; |
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err: |
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dev_dbg(&client->dev, "failed=%d\n", ret); |
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return ret; |
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} |
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static int e4000_set_mixer_gain(struct dvb_frontend *fe) |
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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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u8 u8tmp; |
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dev_dbg(&client->dev, "mixer auto=%d->%d val=%d->%d\n", |
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dev->mixer_gain_auto->cur.val, dev->mixer_gain_auto->val, |
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dev->mixer_gain->cur.val, dev->mixer_gain->val); |
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if (dev->mixer_gain_auto->val) |
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u8tmp = 0x15; |
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else |
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u8tmp = 0x14; |
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ret = regmap_write(dev->regmap, 0x20, u8tmp); |
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if (ret) |
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goto err; |
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if (dev->mixer_gain_auto->val == false) { |
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ret = regmap_write(dev->regmap, 0x15, dev->mixer_gain->val); |
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if (ret) |
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goto err; |
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} |
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return 0; |
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err: |
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dev_dbg(&client->dev, "failed=%d\n", ret); |
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return ret; |
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} |
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static int e4000_set_if_gain(struct dvb_frontend *fe) |
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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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u8 buf[2]; |
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u8 u8tmp; |
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dev_dbg(&client->dev, "if auto=%d->%d val=%d->%d\n", |
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dev->if_gain_auto->cur.val, dev->if_gain_auto->val, |
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dev->if_gain->cur.val, dev->if_gain->val); |
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if (dev->if_gain_auto->val && dev->lna_gain_auto->cur.val) |
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u8tmp = 0x17; |
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else if (dev->lna_gain_auto->cur.val) |
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u8tmp = 0x19; |
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else if (dev->if_gain_auto->val) |
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u8tmp = 0x16; |
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else |
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u8tmp = 0x10; |
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ret = regmap_write(dev->regmap, 0x1a, u8tmp); |
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if (ret) |
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goto err; |
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if (dev->if_gain_auto->val == false) { |
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buf[0] = e4000_if_gain_lut[dev->if_gain->val].reg16_val; |
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buf[1] = e4000_if_gain_lut[dev->if_gain->val].reg17_val; |
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ret = regmap_bulk_write(dev->regmap, 0x16, buf, 2); |
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if (ret) |
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goto err; |
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} |
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return 0; |
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err: |
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dev_dbg(&client->dev, "failed=%d\n", ret); |
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return ret; |
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} |
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static int e4000_pll_lock(struct dvb_frontend *fe) |
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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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unsigned int uitmp; |
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ret = regmap_read(dev->regmap, 0x07, &uitmp); |
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if (ret) |
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goto err; |
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dev->pll_lock->val = (uitmp & 0x01); |
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return 0; |
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err: |
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dev_dbg(&client->dev, "failed=%d\n", ret); |
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return ret; |
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} |
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static int e4000_g_volatile_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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int ret; |
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if (!dev->active) |
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return 0; |
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switch (ctrl->id) { |
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case V4L2_CID_RF_TUNER_PLL_LOCK: |
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ret = e4000_pll_lock(dev->fe); |
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break; |
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default: |
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dev_dbg(&client->dev, "unknown ctrl: id=%d name=%s\n", |
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ctrl->id, ctrl->name); |
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ret = -EINVAL; |
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} |
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return ret; |
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} |
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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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int ret; |
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|
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if (!dev->active) |
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return 0; |
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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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/* |
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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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ret = e4000_set_lna_gain(dev->fe); |
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break; |
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case V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO: |
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case V4L2_CID_RF_TUNER_MIXER_GAIN: |
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ret = e4000_set_mixer_gain(dev->fe); |
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break; |
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case V4L2_CID_RF_TUNER_IF_GAIN_AUTO: |
|
case V4L2_CID_RF_TUNER_IF_GAIN: |
|
ret = e4000_set_if_gain(dev->fe); |
|
break; |
|
default: |
|
dev_dbg(&client->dev, "unknown ctrl: id=%d name=%s\n", |
|
ctrl->id, ctrl->name); |
|
ret = -EINVAL; |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
static const struct v4l2_ctrl_ops e4000_ctrl_ops = { |
|
.g_volatile_ctrl = e4000_g_volatile_ctrl, |
|
.s_ctrl = e4000_s_ctrl, |
|
}; |
|
#endif |
|
|
|
/* |
|
* DVB API |
|
*/ |
|
static int e4000_dvb_set_params(struct dvb_frontend *fe) |
|
{ |
|
struct e4000_dev *dev = fe->tuner_priv; |
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
|
|
|
dev->f_frequency = c->frequency; |
|
dev->f_bandwidth = c->bandwidth_hz; |
|
return e4000_set_params(dev); |
|
} |
|
|
|
static int e4000_dvb_init(struct dvb_frontend *fe) |
|
{ |
|
return e4000_init(fe->tuner_priv); |
|
} |
|
|
|
static int e4000_dvb_sleep(struct dvb_frontend *fe) |
|
{ |
|
return e4000_sleep(fe->tuner_priv); |
|
} |
|
|
|
static int e4000_dvb_get_if_frequency(struct dvb_frontend *fe, u32 *frequency) |
|
{ |
|
*frequency = 0; /* Zero-IF */ |
|
return 0; |
|
} |
|
|
|
static const struct dvb_tuner_ops e4000_dvb_tuner_ops = { |
|
.info = { |
|
.name = "Elonics E4000", |
|
.frequency_min_hz = 174 * MHz, |
|
.frequency_max_hz = 862 * MHz, |
|
}, |
|
|
|
.init = e4000_dvb_init, |
|
.sleep = e4000_dvb_sleep, |
|
.set_params = e4000_dvb_set_params, |
|
|
|
.get_if_frequency = e4000_dvb_get_if_frequency, |
|
}; |
|
|
|
static int e4000_probe(struct i2c_client *client, |
|
const struct i2c_device_id *id) |
|
{ |
|
struct e4000_dev *dev; |
|
struct e4000_config *cfg = client->dev.platform_data; |
|
struct dvb_frontend *fe = cfg->fe; |
|
int ret; |
|
unsigned int uitmp; |
|
static const struct regmap_config regmap_config = { |
|
.reg_bits = 8, |
|
.val_bits = 8, |
|
}; |
|
|
|
dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
|
if (!dev) { |
|
ret = -ENOMEM; |
|
goto err; |
|
} |
|
|
|
dev->clk = cfg->clock; |
|
dev->client = client; |
|
dev->fe = cfg->fe; |
|
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 = regmap_read(dev->regmap, 0x02, &uitmp); |
|
if (ret) |
|
goto err_kfree; |
|
|
|
dev_dbg(&client->dev, "chip id=%02x\n", uitmp); |
|
|
|
if (uitmp != 0x40) { |
|
ret = -ENODEV; |
|
goto err_kfree; |
|
} |
|
|
|
/* put sleep as chip seems to be in normal mode by default */ |
|
ret = regmap_write(dev->regmap, 0x00, 0x00); |
|
if (ret) |
|
goto err_kfree; |
|
|
|
#if IS_ENABLED(CONFIG_VIDEO_V4L2) |
|
/* Register controls */ |
|
v4l2_ctrl_handler_init(&dev->hdl, 9); |
|
dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, |
|
V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 0, 1, 1, 1); |
|
dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, |
|
V4L2_CID_RF_TUNER_BANDWIDTH, 4300000, 11000000, 100000, 4300000); |
|
v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false); |
|
dev->lna_gain_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, |
|
V4L2_CID_RF_TUNER_LNA_GAIN_AUTO, 0, 1, 1, 1); |
|
dev->lna_gain = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, |
|
V4L2_CID_RF_TUNER_LNA_GAIN, 0, 15, 1, 10); |
|
v4l2_ctrl_auto_cluster(2, &dev->lna_gain_auto, 0, false); |
|
dev->mixer_gain_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, |
|
V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO, 0, 1, 1, 1); |
|
dev->mixer_gain = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, |
|
V4L2_CID_RF_TUNER_MIXER_GAIN, 0, 1, 1, 1); |
|
v4l2_ctrl_auto_cluster(2, &dev->mixer_gain_auto, 0, false); |
|
dev->if_gain_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, |
|
V4L2_CID_RF_TUNER_IF_GAIN_AUTO, 0, 1, 1, 1); |
|
dev->if_gain = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, |
|
V4L2_CID_RF_TUNER_IF_GAIN, 0, 54, 1, 0); |
|
v4l2_ctrl_auto_cluster(2, &dev->if_gain_auto, 0, false); |
|
dev->pll_lock = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, |
|
V4L2_CID_RF_TUNER_PLL_LOCK, 0, 1, 1, 0); |
|
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->sd.ctrl_handler = &dev->hdl; |
|
dev->f_frequency = bands[0].rangelow; |
|
dev->f_bandwidth = dev->bandwidth->val; |
|
v4l2_i2c_subdev_init(&dev->sd, client, &e4000_subdev_ops); |
|
#endif |
|
fe->tuner_priv = dev; |
|
memcpy(&fe->ops.tuner_ops, &e4000_dvb_tuner_ops, |
|
sizeof(fe->ops.tuner_ops)); |
|
v4l2_set_subdevdata(&dev->sd, client); |
|
i2c_set_clientdata(client, &dev->sd); |
|
|
|
dev_info(&client->dev, "Elonics E4000 successfully identified\n"); |
|
return 0; |
|
err_kfree: |
|
kfree(dev); |
|
err: |
|
dev_dbg(&client->dev, "failed=%d\n", ret); |
|
return ret; |
|
} |
|
|
|
static int e4000_remove(struct i2c_client *client) |
|
{ |
|
struct v4l2_subdev *sd = i2c_get_clientdata(client); |
|
struct e4000_dev *dev = container_of(sd, struct e4000_dev, sd); |
|
|
|
dev_dbg(&client->dev, "\n"); |
|
|
|
#if IS_ENABLED(CONFIG_VIDEO_V4L2) |
|
v4l2_ctrl_handler_free(&dev->hdl); |
|
#endif |
|
kfree(dev); |
|
|
|
return 0; |
|
} |
|
|
|
static const struct i2c_device_id e4000_id_table[] = { |
|
{"e4000", 0}, |
|
{} |
|
}; |
|
MODULE_DEVICE_TABLE(i2c, e4000_id_table); |
|
|
|
static struct i2c_driver e4000_driver = { |
|
.driver = { |
|
.name = "e4000", |
|
.suppress_bind_attrs = true, |
|
}, |
|
.probe = e4000_probe, |
|
.remove = e4000_remove, |
|
.id_table = e4000_id_table, |
|
}; |
|
|
|
module_i2c_driver(e4000_driver); |
|
|
|
MODULE_DESCRIPTION("Elonics E4000 silicon tuner driver"); |
|
MODULE_AUTHOR("Antti Palosaari <[email protected]>"); |
|
MODULE_LICENSE("GPL");
|
|
|