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ALSA: hda - Add errata initverb sequence for CS42xx codecs

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Add init verb sequence for errata ER880C3
http://www.cirrus.com/en/pubs/errata/ER880C3.pdf

Signed-off-by: Brian Austin <brian.austin@cirrus.com>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Brian Austin 2010-09-07 14:36:22 -05:00 committed by Takashi Iwai
parent 4d155641c8
commit a769cbcf60
1 changed files with 50 additions and 0 deletions
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50
sound/pci/hda/patch_cirrus.c
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@ -972,6 +972,53 @@ static struct hda_verb cs_coef_init_verbs[] = {
{} /* terminator */
};
/* Errata: CS4207 rev C0/C1/C2 Silicon
*
* http://www.cirrus.com/en/pubs/errata/ER880C3.pdf
*
* 6. At high temperature (TA > +85°C), the digital supply current (IVD)
* may be excessive (up to an additional 200 μA), which is most easily
* observed while the part is being held in reset (RESET# active low).
*
* Root Cause: At initial powerup of the device, the logic that drives
* the clock and write enable to the S/PDIF SRC RAMs is not properly
* initialized.
* Certain random patterns will cause a steady leakage current in those
* RAM cells. The issue will resolve once the SRCs are used (turned on).
*
* Workaround: The following verb sequence briefly turns on the S/PDIF SRC
* blocks, which will alleviate the issue.
*/
static struct hda_verb cs_errata_init_verbs[] = {
{0x01, AC_VERB_SET_POWER_STATE, 0x00}, /* AFG: D0 */
{0x11, AC_VERB_SET_PROC_STATE, 0x01}, /* VPW: processing on */
{0x11, AC_VERB_SET_COEF_INDEX, 0x0008},
{0x11, AC_VERB_SET_PROC_COEF, 0x9999},
{0x11, AC_VERB_SET_COEF_INDEX, 0x0017},
{0x11, AC_VERB_SET_PROC_COEF, 0xa412},
{0x11, AC_VERB_SET_COEF_INDEX, 0x0001},
{0x11, AC_VERB_SET_PROC_COEF, 0x0009},
{0x07, AC_VERB_SET_POWER_STATE, 0x00}, /* S/PDIF Rx: D0 */
{0x08, AC_VERB_SET_POWER_STATE, 0x00}, /* S/PDIF Tx: D0 */
{0x11, AC_VERB_SET_COEF_INDEX, 0x0017},
{0x11, AC_VERB_SET_PROC_COEF, 0x2412},
{0x11, AC_VERB_SET_COEF_INDEX, 0x0008},
{0x11, AC_VERB_SET_PROC_COEF, 0x0000},
{0x11, AC_VERB_SET_COEF_INDEX, 0x0001},
{0x11, AC_VERB_SET_PROC_COEF, 0x0008},
{0x11, AC_VERB_SET_PROC_STATE, 0x00},
{0x07, AC_VERB_SET_POWER_STATE, 0x03}, /* S/PDIF Rx: D3 */
{0x08, AC_VERB_SET_POWER_STATE, 0x03}, /* S/PDIF Tx: D3 */
/*{0x01, AC_VERB_SET_POWER_STATE, 0x03},*/ /* AFG: D3 This is already handled */
{} /* terminator */
};
/* SPDIF setup */
static void init_digital(struct hda_codec *codec)
{
@ -991,6 +1038,9 @@ static int cs_init(struct hda_codec *codec)
{
struct cs_spec *spec = codec->spec;
/* init_verb sequence for C0/C1/C2 errata*/
snd_hda_sequence_write(codec, cs_errata_init_verbs);
snd_hda_sequence_write(codec, cs_coef_init_verbs);
if (spec->gpio_mask) {