diff options
| author | Ben Bright <ben.bright@cirrus.com> | 2021-05-12 10:40:19 -0500 |
|---|---|---|
| committer | Tai Kuo <taikuo@google.com> | 2021-06-10 18:07:01 +0800 |
| commit | c4754b5bdaf55a4c37ec7dac32b9d7a27dc98019 (patch) | |
| tree | 289cdb3088a4266fffcb5466e1fdb69f6a1ace2b /cs40l26/cs40l26.c | |
| parent | 995894c6b5c5941020fc1aef412af86560824ff8 (diff) | |
| download | amplifiers-c4754b5bdaf55a4c37ec7dac32b9d7a27dc98019.tar.gz | |
input: cs40l26: Add dcm-en control to device tree
Adding bst-dcm-en control to the device tree to allow users to specify
whether or not to allow the boost converter to enter low-power (dcm)
mode.
Bug: 182970777
Test: OK to boot.
Change-Id: I2161065beffa6c6c92d94cc7356627d047436484
Signed-off-by: Ben Bright <ben.bright@cirrus.com>
Signed-off-by: Tai Kuo <taikuo@google.com>
Diffstat (limited to 'cs40l26/cs40l26.c')
| -rw-r--r-- | cs40l26/cs40l26.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/cs40l26/cs40l26.c b/cs40l26/cs40l26.c index 3b990db..4044cd0 100644 --- a/cs40l26/cs40l26.c +++ b/cs40l26/cs40l26.c @@ -2818,6 +2818,46 @@ err_free: return ret; } +static int cs40l26_bst_dcm_config(struct cs40l26_private *cs40l26) +{ + int ret = 0; + u32 val; + + if (cs40l26->pdata.bst_dcm_en != CS40L26_BST_DCM_EN_DEFAULT) { + ret = regmap_read(cs40l26->regmap, CS40L26_BST_DCM_CTL, &val); + if (ret) { + dev_err(cs40l26->dev, "Failed to read BST_DCM_CTL\n"); + return ret; + } + + val &= ~CS40L26_BST_DCM_EN_MASK; + val |= cs40l26->pdata.bst_dcm_en << CS40L26_BST_DCM_EN_SHIFT; + + ret = regmap_write(cs40l26->regmap, CS40L26_BST_DCM_CTL, val); + if (ret) { + dev_err(cs40l26->dev, "Failed to write BST_DCM_CTL\n"); + return ret; + } + + switch (cs40l26->revid) { + case CS40L26_REVID_A0: + ret = cs40l26_pseq_v1_add_pair(cs40l26, + CS40L26_BST_DCM_CTL, val, true); + break; + case CS40L26_REVID_A1: + ret = cs40l26_pseq_v2_add_write_reg_full(cs40l26, + CS40L26_BST_DCM_CTL, val, true); + break; + default: + dev_err(cs40l26->dev, "Revid ID not supported: %02X\n", + cs40l26->revid); + ret = -EINVAL; + } + } + + return ret; +} + static int cs40l26_dsp_config(struct cs40l26_private *cs40l26) { struct regmap *regmap = cs40l26->regmap; @@ -2877,6 +2917,10 @@ static int cs40l26_dsp_config(struct cs40l26_private *cs40l26) if (ret) goto err_out; + ret = cs40l26_bst_dcm_config(cs40l26); + if (ret) + goto err_out; + ret = cs40l26_brownout_prevention_init(cs40l26); if (ret) goto err_out; @@ -3032,6 +3076,11 @@ static int cs40l26_handle_platform_data(struct cs40l26_private *cs40l26) else cs40l26->pdata.vpbr_rel_rate = CS40L26_VXBR_DEFAULT; + if (!of_property_read_u32(np, "cirrus,bst-dcm-en", &val)) + cs40l26->pdata.bst_dcm_en = val; + else + cs40l26->pdata.bst_dcm_en = CS40L26_BST_DCM_EN_DEFAULT; + return 0; } |