diff options
| author | HW Lee <hwlee@google.com> | 2019-01-30 16:03:01 +0800 |
|---|---|---|
| committer | HW Lee <hwlee@google.com> | 2019-02-21 11:41:35 +0800 |
| commit | ee5da3155d047e34d2e4fecaafaa106cdb830511 (patch) | |
| tree | aeafa3762fb08cb81b8029ed33f6e540c73e6c15 | |
| parent | 37349fa5d8e97a7fd18425a66d9b7307d9003e73 (diff) | |
| download | msm-extra-ee5da3155d047e34d2e4fecaafaa106cdb830511.tar.gz | |
techpack/audio: crus: fix BST_IPK_CTL
Please refer to Cirrus SPEC 7.11.3
The transformation between reg value to current:
16 -> 1.60A
17 -> 1.65A
...
74 -> 4.50A
i.e. reg-value = 16 + (current - 1.60)/0.05
Therefore, the original driver missed the offset 16.
Bug: 123457129
Test: dump regmap
Signed-off-by: HW Lee <hwlee@google.com>
Change-Id: Icc0f56aef7fa7ce782625c616d1774de51fd22bb
| -rw-r--r-- | asoc/codecs/cs35l36.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/asoc/codecs/cs35l36.c b/asoc/codecs/cs35l36.c index 4f941a60..eca82aa2 100644 --- a/asoc/codecs/cs35l36.c +++ b/asoc/codecs/cs35l36.c @@ -1235,6 +1235,14 @@ static int cs35l36_handle_of_data(struct i2c_client *i2c_client, return -EINVAL; } + // see SPEC 7.11.3 BST_IPK_CTL + // The transformation between reg value to current: + // bst_ipk current + // 16 1.60 A + // 17 1.65 A + // ... + // 74 4.50 A + // The reg value must have an offset 16 for the minimum pdata->bst_ipk = (val - 1600) / 50 + 16; } |