ALSA: hda - Add errata initverb sequence for CS42xx codecs (a769cbcf) · Commits · 戴 / test

sound/pci/hda/patch_cirrus.c

+50 −0

Original line number	Diff line number	Diff line
		@@ -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) {

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