diff options
| author | Brian Austin <brian.austin@cirrus.com> | 2017-05-18 16:32:36 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2017-05-19 17:31:34 +0100 |
| commit | b7c752d68aee9c066cb0bd2f24ee73aed64575e8 (patch) | |
| tree | 3dfe58577425469aa98cf903adea61660af9dc39 /sound/soc/codecs/cs35l35.c | |
| parent | 2ea659a9ef488125eb46da6eb571de5eae5c43f6 (diff) | |
| download | linux-b7c752d68aee9c066cb0bd2f24ee73aed64575e8.tar.bz2 | |
ASoC: cs35l35: Add Boost Inductor Calculation
Add the Boost Inductor parameters based off the size of the inductor
on the HW setup
Signed-off-by: Brian Austin <brian.austin@cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/codecs/cs35l35.c')
| -rw-r--r-- | sound/soc/codecs/cs35l35.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/sound/soc/codecs/cs35l35.c b/sound/soc/codecs/cs35l35.c index f8aef5869b03..c6eabb8610f0 100644 --- a/sound/soc/codecs/cs35l35.c +++ b/sound/soc/codecs/cs35l35.c @@ -756,6 +756,76 @@ static int cs35l35_codec_set_sysclk(struct snd_soc_codec *codec, return ret; } +static int cs35l35_boost_inductor(struct cs35l35_private *cs35l35, + int inductor) +{ + struct regmap *regmap = cs35l35->regmap; + unsigned int bst_ipk = 0; + + /* + * Digital Boost Converter Configuration for feedback, + * ramping, switching frequency, and estimation block seeding. + */ + + regmap_update_bits(regmap, CS35L35_BST_CONV_SW_FREQ, + CS35L35_BST_CONV_SWFREQ_MASK, 0x00); + + regmap_read(regmap, CS35L35_BST_PEAK_I, &bst_ipk); + bst_ipk &= CS35L35_BST_IPK_MASK; + + switch (inductor) { + case 1000: /* 1 uH */ + regmap_write(regmap, CS35L35_BST_CONV_COEF_1, 0x24); + regmap_write(regmap, CS35L35_BST_CONV_COEF_2, 0x24); + regmap_update_bits(regmap, CS35L35_BST_CONV_SW_FREQ, + CS35L35_BST_CONV_LBST_MASK, 0x00); + + if (bst_ipk < 0x04) + regmap_write(regmap, CS35L35_BST_CONV_SLOPE_COMP, 0x1B); + else + regmap_write(regmap, CS35L35_BST_CONV_SLOPE_COMP, 0x4E); + break; + case 1200: /* 1.2 uH */ + regmap_write(regmap, CS35L35_BST_CONV_COEF_1, 0x20); + regmap_write(regmap, CS35L35_BST_CONV_COEF_2, 0x20); + regmap_update_bits(regmap, CS35L35_BST_CONV_SW_FREQ, + CS35L35_BST_CONV_LBST_MASK, 0x01); + + if (bst_ipk < 0x04) + regmap_write(regmap, CS35L35_BST_CONV_SLOPE_COMP, 0x1B); + else + regmap_write(regmap, CS35L35_BST_CONV_SLOPE_COMP, 0x47); + break; + case 1500: /* 1.5uH */ + regmap_write(regmap, CS35L35_BST_CONV_COEF_1, 0x20); + regmap_write(regmap, CS35L35_BST_CONV_COEF_2, 0x20); + regmap_update_bits(regmap, CS35L35_BST_CONV_SW_FREQ, + CS35L35_BST_CONV_LBST_MASK, 0x02); + + if (bst_ipk < 0x04) + regmap_write(regmap, CS35L35_BST_CONV_SLOPE_COMP, 0x1B); + else + regmap_write(regmap, CS35L35_BST_CONV_SLOPE_COMP, 0x3C); + break; + case 2200: /* 2.2uH */ + regmap_write(regmap, CS35L35_BST_CONV_COEF_1, 0x19); + regmap_write(regmap, CS35L35_BST_CONV_COEF_2, 0x25); + regmap_update_bits(regmap, CS35L35_BST_CONV_SW_FREQ, + CS35L35_BST_CONV_LBST_MASK, 0x03); + + if (bst_ipk < 0x04) + regmap_write(regmap, CS35L35_BST_CONV_SLOPE_COMP, 0x1B); + else + regmap_write(regmap, CS35L35_BST_CONV_SLOPE_COMP, 0x23); + break; + default: + dev_err(cs35l35->dev, "Invalid Inductor Value %d uH\n", + inductor); + return -EINVAL; + } + return 0; +} + static int cs35l35_codec_probe(struct snd_soc_codec *codec) { struct cs35l35_private *cs35l35 = snd_soc_codec_get_drvdata(codec); @@ -775,6 +845,10 @@ static int cs35l35_codec_probe(struct snd_soc_codec *codec) cs35l35->pdata.bst_ipk << CS35L35_BST_IPK_SHIFT); + ret = cs35l35_boost_inductor(cs35l35, cs35l35->pdata.boost_ind); + if (ret) + return ret; + if (cs35l35->pdata.gain_zc) regmap_update_bits(cs35l35->regmap, CS35L35_PROTECT_CTL, CS35L35_AMP_GAIN_ZC_MASK, @@ -1198,6 +1272,14 @@ static int cs35l35_handle_of_data(struct i2c_client *i2c_client, pdata->bst_ipk = (val32 - 1680) / 110; } + ret = of_property_read_u32(np, "cirrus,boost-ind-nanohenry", &val32); + if (ret >= 0) { + pdata->boost_ind = val32; + } else { + dev_err(&i2c_client->dev, "Inductor not specified.\n"); + return -EINVAL; + } + if (of_property_read_u32(np, "cirrus,sp-drv-strength", &val32) >= 0) pdata->sp_drv_str = val32; if (of_property_read_u32(np, "cirrus,sp-drv-unused", &val32) >= 0) |