The Headset gain range is 0 - 0xf (4 bit resolution) The Handsfree gain range is 0 - 0x1d (5 bit resolution, 0x1e, and 0x1f values are invalid)
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com --- sound/soc/codecs/twl6040.c | 9 +++++---- 1 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/sound/soc/codecs/twl6040.c b/sound/soc/codecs/twl6040.c index 91242de..4aa7d69 100644 --- a/sound/soc/codecs/twl6040.c +++ b/sound/soc/codecs/twl6040.c @@ -495,8 +495,8 @@ static void twl6040_pga_hs_work(struct work_struct *work) if (headset->ramp == TWL6040_RAMP_NONE) return;
- /* HS PGA volumes have 4 bits of resolution to ramp */ - for (i = 0; i <= 16; i++) { + /* HS PGA gain range: 0x0 - 0xf (0 - 15) */ + for (i = 0; i < 16; i++) { headset_complete = twl6040_hs_ramp_step(codec, headset->left_step, headset->right_step); @@ -530,8 +530,9 @@ static void twl6040_pga_hf_work(struct work_struct *work) if (handsfree->ramp == TWL6040_RAMP_NONE) return;
- /* HF PGA volumes have 5 bits of resolution to ramp */ - for (i = 0; i <= 32; i++) { + /* + * HF PGA gain range: 0x00 - 0x1d (0 - 29) */ + for (i = 0; i < 30; i++) { handsfree_complete = twl6040_hf_ramp_step(codec, handsfree->left_step, handsfree->right_step);