diff options
Diffstat (limited to 'sound/soc/codecs/tas2764-quirks.h')
| -rw-r--r-- | sound/soc/codecs/tas2764-quirks.h | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/sound/soc/codecs/tas2764-quirks.h b/sound/soc/codecs/tas2764-quirks.h new file mode 100644 index 000000000000..7a62b3ba5b40 --- /dev/null +++ b/sound/soc/codecs/tas2764-quirks.h @@ -0,0 +1,180 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +#ifndef __TAS2764_QUIRKS__ +#define __TAS2764_QUIRKS__ + +#include <linux/regmap.h> + +#include "tas2764.h" + +/* Bitmask of enabled Apple quirks */ +#define ENABLED_APPLE_QUIRKS 0x3f + +/* + * Disable noise gate and flip down reserved bit in NS_CFG0 + */ +#define TAS2764_NOISE_GATE_DISABLE BIT(0) + +static const struct reg_sequence tas2764_noise_gate_dis_seq[] = { + REG_SEQ0(TAS2764_REG(0x0, 0x35), 0xb0) +}; + +/* + * CONV_VBAT_PVDD_MODE=1 + */ +#define TAS2764_CONV_VBAT_PVDD_MODE BIT(1) + +static const struct reg_sequence tas2764_conv_vbat_pvdd_mode_seq[] = { + REG_SEQ0(TAS2764_REG(0x0, 0x6b), 0x41) +}; + +/* + * Reset of DAC modulator when DSP is OFF + */ +#define TAS2764_DMOD_RST BIT(2) + +static const struct reg_sequence tas2764_dmod_rst_seq[] = { + REG_SEQ0(TAS2764_REG(0x0, 0x76), 0x0) +}; + +/* + * Unknown 0x133/0x137 writes (maybe TDM related) + */ +#define TAS2764_UNK_SEQ0 BIT(3) + +static const struct reg_sequence tas2764_unk_seq0[] = { + REG_SEQ0(TAS2764_REG(0x1, 0x33), 0x80), + REG_SEQ0(TAS2764_REG(0x1, 0x37), 0x3a), +}; + +/* + * Unknown 0x614 - 0x61f writes + */ +#define TAS2764_APPLE_UNK_SEQ1 BIT(4) + +static const struct reg_sequence tas2764_unk_seq1[] = { + REG_SEQ0(TAS2764_REG(0x6, 0x14), 0x0), + REG_SEQ0(TAS2764_REG(0x6, 0x15), 0x13), + REG_SEQ0(TAS2764_REG(0x6, 0x16), 0x52), + REG_SEQ0(TAS2764_REG(0x6, 0x17), 0x0), + REG_SEQ0(TAS2764_REG(0x6, 0x18), 0xe4), + REG_SEQ0(TAS2764_REG(0x6, 0x19), 0xc), + REG_SEQ0(TAS2764_REG(0x6, 0x16), 0xaa), + REG_SEQ0(TAS2764_REG(0x6, 0x1b), 0x0), + REG_SEQ0(TAS2764_REG(0x6, 0x1c), 0x12), + REG_SEQ0(TAS2764_REG(0x6, 0x1d), 0xa0), + REG_SEQ0(TAS2764_REG(0x6, 0x1e), 0xd8), + REG_SEQ0(TAS2764_REG(0x6, 0x1f), 0x0), +}; + +/* + * Unknown writes in the 0xfd page (with secondary paging inside) + */ +#define TAS2764_APPLE_UNK_SEQ2 BIT(5) + +static const struct reg_sequence tas2764_unk_seq2[] = { + REG_SEQ0(TAS2764_REG(0xfd, 0x0d), 0xd), + REG_SEQ0(TAS2764_REG(0xfd, 0x6c), 0x2), + REG_SEQ0(TAS2764_REG(0xfd, 0x6d), 0xf), + REG_SEQ0(TAS2764_REG(0xfd, 0x0d), 0x0), +}; + +/* + * Disable 'Thermal Threshold 1' + */ +#define TAS2764_THERMAL_TH1_DISABLE BIT(6) + +static const struct reg_sequence tas2764_thermal_th1_dis_seq[] = { + REG_SEQ0(TAS2764_REG(0x1, 0x47), 0x2), +}; + +/* + * Imitate Apple's shutdown dance + */ +#define TAS2764_SHUTDOWN_DANCE BIT(7) + +static const struct reg_sequence tas2764_shutdown_dance_init_seq[] = { + /* + * SDZ_MODE=01 (immediate) + * + * We want the shutdown to happen under the influence of + * the magic writes in the 0xfdXX region, so make sure + * the shutdown is immediate and there's no grace period + * followed by the codec part. + */ + REG_SEQ0(TAS2764_REG(0x0, 0x7), 0x60), +}; + +static const struct reg_sequence tas2764_pre_shutdown_seq[] = { + REG_SEQ0(TAS2764_REG(0xfd, 0x0d), 0xd), /* switch hidden page */ + REG_SEQ0(TAS2764_REG(0xfd, 0x64), 0x4), /* do write (unknown semantics) */ + REG_SEQ0(TAS2764_REG(0xfd, 0x0d), 0x0), /* switch hidden page back */ +}; + +static const struct reg_sequence tas2764_post_shutdown_seq[] = { + REG_SEQ0(TAS2764_REG(0xfd, 0x0d), 0xd), + REG_SEQ0(TAS2764_REG(0xfd, 0x64), 0x0), /* revert write from pre sequence */ + REG_SEQ0(TAS2764_REG(0xfd, 0x0d), 0x0), +}; + +static int tas2764_do_quirky_pwr_ctrl_change(struct tas2764_priv *tas2764, + unsigned int target) +{ + unsigned int curr; + int ret; + + curr = snd_soc_component_read_field(tas2764->component, + TAS2764_PWR_CTRL, + TAS2764_PWR_CTRL_MASK); + + if (target == curr) + return 0; + + /* Handle power state transition to shutdown */ + if (target == TAS2764_PWR_CTRL_SHUTDOWN && + (curr == TAS2764_PWR_CTRL_MUTE || curr == TAS2764_PWR_CTRL_ACTIVE)) { + ret = regmap_multi_reg_write(tas2764->regmap, tas2764_pre_shutdown_seq, + ARRAY_SIZE(tas2764_pre_shutdown_seq)); + if (!ret) + ret = snd_soc_component_update_bits(tas2764->component, + TAS2764_PWR_CTRL, + TAS2764_PWR_CTRL_MASK, + TAS2764_PWR_CTRL_SHUTDOWN); + if (!ret) + ret = regmap_multi_reg_write(tas2764->regmap, + tas2764_post_shutdown_seq, + ARRAY_SIZE(tas2764_post_shutdown_seq)); + } + + ret = snd_soc_component_update_bits(tas2764->component, TAS2764_PWR_CTRL, + TAS2764_PWR_CTRL_MASK, target); + + return ret; +} + +/* + * Via devicetree (TODO): + * - switch from spread spectrum to class-D switching + * - disable edge control + * - set BOP settings (the BOP config bits *and* BOP_SRC) + */ + +/* + * Other setup TODOs: + * - DVC ramp rate + */ + +static const struct tas2764_quirk_init_sequence { + const struct reg_sequence *seq; + int len; +} tas2764_quirk_init_sequences[] = { + { tas2764_noise_gate_dis_seq, ARRAY_SIZE(tas2764_noise_gate_dis_seq) }, + { tas2764_dmod_rst_seq, ARRAY_SIZE(tas2764_dmod_rst_seq) }, + { tas2764_conv_vbat_pvdd_mode_seq, ARRAY_SIZE(tas2764_conv_vbat_pvdd_mode_seq) }, + { tas2764_unk_seq0, ARRAY_SIZE(tas2764_unk_seq0) }, + { tas2764_unk_seq1, ARRAY_SIZE(tas2764_unk_seq1) }, + { tas2764_unk_seq2, ARRAY_SIZE(tas2764_unk_seq2) }, + { tas2764_thermal_th1_dis_seq, ARRAY_SIZE(tas2764_thermal_th1_dis_seq) }, + { tas2764_shutdown_dance_init_seq, ARRAY_SIZE(tas2764_shutdown_dance_init_seq) }, +}; + +#endif /* __TAS2764_QUIRKS__ */ |