850 lines
24 KiB
C
Executable file
850 lines
24 KiB
C
Executable file
/*
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* HDMI Channel map support helpers
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*/
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#include <linux/module.h>
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#include <sound/control.h>
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#include <sound/tlv.h>
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#include <sound/hda_chmap.h>
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/*
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* CEA speaker placement:
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*
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* FLH FCH FRH
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* FLW FL FLC FC FRC FR FRW
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*
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* LFE
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* TC
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*
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* RL RLC RC RRC RR
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*
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* The Left/Right Surround channel _notions_ LS/RS in SMPTE 320M corresponds to
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* CEA RL/RR; The SMPTE channel _assignment_ C/LFE is swapped to CEA LFE/FC.
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*/
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enum cea_speaker_placement {
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FL = (1 << 0), /* Front Left */
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FC = (1 << 1), /* Front Center */
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FR = (1 << 2), /* Front Right */
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FLC = (1 << 3), /* Front Left Center */
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FRC = (1 << 4), /* Front Right Center */
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RL = (1 << 5), /* Rear Left */
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RC = (1 << 6), /* Rear Center */
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RR = (1 << 7), /* Rear Right */
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RLC = (1 << 8), /* Rear Left Center */
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RRC = (1 << 9), /* Rear Right Center */
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LFE = (1 << 10), /* Low Frequency Effect */
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FLW = (1 << 11), /* Front Left Wide */
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FRW = (1 << 12), /* Front Right Wide */
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FLH = (1 << 13), /* Front Left High */
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FCH = (1 << 14), /* Front Center High */
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FRH = (1 << 15), /* Front Right High */
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TC = (1 << 16), /* Top Center */
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};
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static const char * const cea_speaker_allocation_names[] = {
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/* 0 */ "FL/FR",
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/* 1 */ "LFE",
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/* 2 */ "FC",
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/* 3 */ "RL/RR",
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/* 4 */ "RC",
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/* 5 */ "FLC/FRC",
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/* 6 */ "RLC/RRC",
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/* 7 */ "FLW/FRW",
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/* 8 */ "FLH/FRH",
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/* 9 */ "TC",
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/* 10 */ "FCH",
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};
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/*
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* ELD SA bits in the CEA Speaker Allocation data block
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*/
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static int eld_speaker_allocation_bits[] = {
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[0] = FL | FR,
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[1] = LFE,
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[2] = FC,
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[3] = RL | RR,
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[4] = RC,
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[5] = FLC | FRC,
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[6] = RLC | RRC,
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/* the following are not defined in ELD yet */
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[7] = FLW | FRW,
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[8] = FLH | FRH,
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[9] = TC,
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[10] = FCH,
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};
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/*
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* ALSA sequence is:
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*
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* surround40 surround41 surround50 surround51 surround71
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* ch0 front left = = = =
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* ch1 front right = = = =
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* ch2 rear left = = = =
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* ch3 rear right = = = =
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* ch4 LFE center center center
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* ch5 LFE LFE
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* ch6 side left
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* ch7 side right
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*
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* surround71 = {FL, FR, RLC, RRC, FC, LFE, RL, RR}
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*/
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static int hdmi_channel_mapping[0x32][8] = {
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/* stereo */
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[0x00] = { 0x00, 0x11, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7 },
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/* 2.1 */
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[0x01] = { 0x00, 0x11, 0x22, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7 },
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/* Dolby Surround */
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[0x02] = { 0x00, 0x11, 0x23, 0xf2, 0xf4, 0xf5, 0xf6, 0xf7 },
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/* surround40 */
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[0x08] = { 0x00, 0x11, 0x24, 0x35, 0xf3, 0xf2, 0xf6, 0xf7 },
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/* 4ch */
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[0x03] = { 0x00, 0x11, 0x23, 0x32, 0x44, 0xf5, 0xf6, 0xf7 },
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/* surround41 */
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[0x09] = { 0x00, 0x11, 0x24, 0x35, 0x42, 0xf3, 0xf6, 0xf7 },
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/* surround50 */
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[0x0a] = { 0x00, 0x11, 0x24, 0x35, 0x43, 0xf2, 0xf6, 0xf7 },
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/* surround51 */
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[0x0b] = { 0x00, 0x11, 0x24, 0x35, 0x43, 0x52, 0xf6, 0xf7 },
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/* 7.1 */
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[0x13] = { 0x00, 0x11, 0x26, 0x37, 0x43, 0x52, 0x64, 0x75 },
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};
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/*
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* This is an ordered list!
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*
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* The preceding ones have better chances to be selected by
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* hdmi_channel_allocation().
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*/
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static struct hdac_cea_channel_speaker_allocation channel_allocations[] = {
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/* channel: 7 6 5 4 3 2 1 0 */
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{ .ca_index = 0x00, .speakers = { 0, 0, 0, 0, 0, 0, FR, FL } },
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/* 2.1 */
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{ .ca_index = 0x01, .speakers = { 0, 0, 0, 0, 0, LFE, FR, FL } },
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/* Dolby Surround */
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{ .ca_index = 0x02, .speakers = { 0, 0, 0, 0, FC, 0, FR, FL } },
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/* surround40 */
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{ .ca_index = 0x08, .speakers = { 0, 0, RR, RL, 0, 0, FR, FL } },
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/* surround41 */
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{ .ca_index = 0x09, .speakers = { 0, 0, RR, RL, 0, LFE, FR, FL } },
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/* surround50 */
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{ .ca_index = 0x0a, .speakers = { 0, 0, RR, RL, FC, 0, FR, FL } },
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/* surround51 */
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{ .ca_index = 0x0b, .speakers = { 0, 0, RR, RL, FC, LFE, FR, FL } },
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/* 6.1 */
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{ .ca_index = 0x0f, .speakers = { 0, RC, RR, RL, FC, LFE, FR, FL } },
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/* surround71 */
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{ .ca_index = 0x13, .speakers = { RRC, RLC, RR, RL, FC, LFE, FR, FL } },
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{ .ca_index = 0x03, .speakers = { 0, 0, 0, 0, FC, LFE, FR, FL } },
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{ .ca_index = 0x04, .speakers = { 0, 0, 0, RC, 0, 0, FR, FL } },
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{ .ca_index = 0x05, .speakers = { 0, 0, 0, RC, 0, LFE, FR, FL } },
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{ .ca_index = 0x06, .speakers = { 0, 0, 0, RC, FC, 0, FR, FL } },
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{ .ca_index = 0x07, .speakers = { 0, 0, 0, RC, FC, LFE, FR, FL } },
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{ .ca_index = 0x0c, .speakers = { 0, RC, RR, RL, 0, 0, FR, FL } },
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{ .ca_index = 0x0d, .speakers = { 0, RC, RR, RL, 0, LFE, FR, FL } },
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{ .ca_index = 0x0e, .speakers = { 0, RC, RR, RL, FC, 0, FR, FL } },
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{ .ca_index = 0x10, .speakers = { RRC, RLC, RR, RL, 0, 0, FR, FL } },
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{ .ca_index = 0x11, .speakers = { RRC, RLC, RR, RL, 0, LFE, FR, FL } },
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{ .ca_index = 0x12, .speakers = { RRC, RLC, RR, RL, FC, 0, FR, FL } },
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{ .ca_index = 0x14, .speakers = { FRC, FLC, 0, 0, 0, 0, FR, FL } },
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{ .ca_index = 0x15, .speakers = { FRC, FLC, 0, 0, 0, LFE, FR, FL } },
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{ .ca_index = 0x16, .speakers = { FRC, FLC, 0, 0, FC, 0, FR, FL } },
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{ .ca_index = 0x17, .speakers = { FRC, FLC, 0, 0, FC, LFE, FR, FL } },
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{ .ca_index = 0x18, .speakers = { FRC, FLC, 0, RC, 0, 0, FR, FL } },
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{ .ca_index = 0x19, .speakers = { FRC, FLC, 0, RC, 0, LFE, FR, FL } },
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{ .ca_index = 0x1a, .speakers = { FRC, FLC, 0, RC, FC, 0, FR, FL } },
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{ .ca_index = 0x1b, .speakers = { FRC, FLC, 0, RC, FC, LFE, FR, FL } },
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{ .ca_index = 0x1c, .speakers = { FRC, FLC, RR, RL, 0, 0, FR, FL } },
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{ .ca_index = 0x1d, .speakers = { FRC, FLC, RR, RL, 0, LFE, FR, FL } },
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{ .ca_index = 0x1e, .speakers = { FRC, FLC, RR, RL, FC, 0, FR, FL } },
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{ .ca_index = 0x1f, .speakers = { FRC, FLC, RR, RL, FC, LFE, FR, FL } },
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{ .ca_index = 0x20, .speakers = { 0, FCH, RR, RL, FC, 0, FR, FL } },
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{ .ca_index = 0x21, .speakers = { 0, FCH, RR, RL, FC, LFE, FR, FL } },
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{ .ca_index = 0x22, .speakers = { TC, 0, RR, RL, FC, 0, FR, FL } },
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{ .ca_index = 0x23, .speakers = { TC, 0, RR, RL, FC, LFE, FR, FL } },
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{ .ca_index = 0x24, .speakers = { FRH, FLH, RR, RL, 0, 0, FR, FL } },
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{ .ca_index = 0x25, .speakers = { FRH, FLH, RR, RL, 0, LFE, FR, FL } },
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{ .ca_index = 0x26, .speakers = { FRW, FLW, RR, RL, 0, 0, FR, FL } },
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{ .ca_index = 0x27, .speakers = { FRW, FLW, RR, RL, 0, LFE, FR, FL } },
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{ .ca_index = 0x28, .speakers = { TC, RC, RR, RL, FC, 0, FR, FL } },
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{ .ca_index = 0x29, .speakers = { TC, RC, RR, RL, FC, LFE, FR, FL } },
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{ .ca_index = 0x2a, .speakers = { FCH, RC, RR, RL, FC, 0, FR, FL } },
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{ .ca_index = 0x2b, .speakers = { FCH, RC, RR, RL, FC, LFE, FR, FL } },
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{ .ca_index = 0x2c, .speakers = { TC, FCH, RR, RL, FC, 0, FR, FL } },
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{ .ca_index = 0x2d, .speakers = { TC, FCH, RR, RL, FC, LFE, FR, FL } },
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{ .ca_index = 0x2e, .speakers = { FRH, FLH, RR, RL, FC, 0, FR, FL } },
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{ .ca_index = 0x2f, .speakers = { FRH, FLH, RR, RL, FC, LFE, FR, FL } },
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{ .ca_index = 0x30, .speakers = { FRW, FLW, RR, RL, FC, 0, FR, FL } },
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{ .ca_index = 0x31, .speakers = { FRW, FLW, RR, RL, FC, LFE, FR, FL } },
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};
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static int hdmi_pin_set_slot_channel(struct hdac_device *codec,
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hda_nid_t pin_nid, int asp_slot, int channel)
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{
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return snd_hdac_codec_write(codec, pin_nid, 0,
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AC_VERB_SET_HDMI_CHAN_SLOT,
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(channel << 4) | asp_slot);
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}
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static int hdmi_pin_get_slot_channel(struct hdac_device *codec,
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hda_nid_t pin_nid, int asp_slot)
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{
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return (snd_hdac_codec_read(codec, pin_nid, 0,
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AC_VERB_GET_HDMI_CHAN_SLOT,
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asp_slot) & 0xf0) >> 4;
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}
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static int hdmi_get_channel_count(struct hdac_device *codec, hda_nid_t cvt_nid)
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{
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return 1 + snd_hdac_codec_read(codec, cvt_nid, 0,
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AC_VERB_GET_CVT_CHAN_COUNT, 0);
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}
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static void hdmi_set_channel_count(struct hdac_device *codec,
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hda_nid_t cvt_nid, int chs)
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{
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if (chs != hdmi_get_channel_count(codec, cvt_nid))
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snd_hdac_codec_write(codec, cvt_nid, 0,
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AC_VERB_SET_CVT_CHAN_COUNT, chs - 1);
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}
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/*
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* Channel mapping routines
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*/
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/*
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* Compute derived values in channel_allocations[].
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*/
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static void init_channel_allocations(void)
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{
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int i, j;
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struct hdac_cea_channel_speaker_allocation *p;
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for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
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p = channel_allocations + i;
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p->channels = 0;
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p->spk_mask = 0;
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for (j = 0; j < ARRAY_SIZE(p->speakers); j++)
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if (p->speakers[j]) {
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p->channels++;
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p->spk_mask |= p->speakers[j];
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}
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}
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}
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static int get_channel_allocation_order(int ca)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
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if (channel_allocations[i].ca_index == ca)
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break;
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}
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return i;
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}
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void snd_hdac_print_channel_allocation(int spk_alloc, char *buf, int buflen)
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{
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int i, j;
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for (i = 0, j = 0; i < ARRAY_SIZE(cea_speaker_allocation_names); i++) {
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if (spk_alloc & (1 << i))
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j += scnprintf(buf + j, buflen - j, " %s",
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cea_speaker_allocation_names[i]);
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}
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buf[j] = '\0'; /* necessary when j == 0 */
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}
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EXPORT_SYMBOL_GPL(snd_hdac_print_channel_allocation);
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/*
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* The transformation takes two steps:
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*
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* eld->spk_alloc => (eld_speaker_allocation_bits[]) => spk_mask
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* spk_mask => (channel_allocations[]) => ai->CA
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*
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* TODO: it could select the wrong CA from multiple candidates.
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*/
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static int hdmi_channel_allocation_spk_alloc_blk(struct hdac_device *codec,
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int spk_alloc, int channels)
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{
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int i;
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int ca = 0;
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int spk_mask = 0;
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char buf[SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE];
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/*
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* CA defaults to 0 for basic stereo audio
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*/
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if (channels <= 2)
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return 0;
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/*
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* expand ELD's speaker allocation mask
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*
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* ELD tells the speaker mask in a compact(paired) form,
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* expand ELD's notions to match the ones used by Audio InfoFrame.
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*/
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for (i = 0; i < ARRAY_SIZE(eld_speaker_allocation_bits); i++) {
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if (spk_alloc & (1 << i))
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spk_mask |= eld_speaker_allocation_bits[i];
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}
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/* search for the first working match in the CA table */
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for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
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if (channels == channel_allocations[i].channels &&
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(spk_mask & channel_allocations[i].spk_mask) ==
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channel_allocations[i].spk_mask) {
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ca = channel_allocations[i].ca_index;
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break;
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}
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}
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if (!ca) {
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/*
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* if there was no match, select the regular ALSA channel
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* allocation with the matching number of channels
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*/
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for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
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if (channels == channel_allocations[i].channels) {
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ca = channel_allocations[i].ca_index;
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break;
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}
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}
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}
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snd_hdac_print_channel_allocation(spk_alloc, buf, sizeof(buf));
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dev_dbg(&codec->dev, "HDMI: select CA 0x%x for %d-channel allocation: %s\n",
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ca, channels, buf);
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return ca;
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}
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static void hdmi_debug_channel_mapping(struct hdac_chmap *chmap,
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hda_nid_t pin_nid)
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{
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#ifdef CONFIG_SND_DEBUG_VERBOSE
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int i;
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int channel;
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for (i = 0; i < 8; i++) {
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channel = chmap->ops.pin_get_slot_channel(
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chmap->hdac, pin_nid, i);
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dev_dbg(&chmap->hdac->dev, "HDMI: ASP channel %d => slot %d\n",
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channel, i);
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}
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#endif
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}
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static void hdmi_std_setup_channel_mapping(struct hdac_chmap *chmap,
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hda_nid_t pin_nid,
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bool non_pcm,
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int ca)
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{
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struct hdac_cea_channel_speaker_allocation *ch_alloc;
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int i;
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int err;
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int order;
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int non_pcm_mapping[8];
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order = get_channel_allocation_order(ca);
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ch_alloc = &channel_allocations[order];
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if (hdmi_channel_mapping[ca][1] == 0) {
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int hdmi_slot = 0;
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/* fill actual channel mappings in ALSA channel (i) order */
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for (i = 0; i < ch_alloc->channels; i++) {
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while (!WARN_ON(hdmi_slot >= 8) &&
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!ch_alloc->speakers[7 - hdmi_slot])
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hdmi_slot++; /* skip zero slots */
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hdmi_channel_mapping[ca][i] = (i << 4) | hdmi_slot++;
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}
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/* fill the rest of the slots with ALSA channel 0xf */
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for (hdmi_slot = 0; hdmi_slot < 8; hdmi_slot++)
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if (!ch_alloc->speakers[7 - hdmi_slot])
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hdmi_channel_mapping[ca][i++] = (0xf << 4) | hdmi_slot;
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}
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if (non_pcm) {
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for (i = 0; i < ch_alloc->channels; i++)
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non_pcm_mapping[i] = (i << 4) | i;
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for (; i < 8; i++)
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non_pcm_mapping[i] = (0xf << 4) | i;
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}
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for (i = 0; i < 8; i++) {
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int slotsetup = non_pcm ? non_pcm_mapping[i] : hdmi_channel_mapping[ca][i];
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int hdmi_slot = slotsetup & 0x0f;
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int channel = (slotsetup & 0xf0) >> 4;
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err = chmap->ops.pin_set_slot_channel(chmap->hdac,
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pin_nid, hdmi_slot, channel);
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if (err) {
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dev_dbg(&chmap->hdac->dev, "HDMI: channel mapping failed\n");
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break;
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}
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}
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}
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struct channel_map_table {
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unsigned char map; /* ALSA API channel map position */
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int spk_mask; /* speaker position bit mask */
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};
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static struct channel_map_table map_tables[] = {
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{ SNDRV_CHMAP_FL, FL },
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{ SNDRV_CHMAP_FR, FR },
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{ SNDRV_CHMAP_RL, RL },
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{ SNDRV_CHMAP_RR, RR },
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{ SNDRV_CHMAP_LFE, LFE },
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{ SNDRV_CHMAP_FC, FC },
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{ SNDRV_CHMAP_RLC, RLC },
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{ SNDRV_CHMAP_RRC, RRC },
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{ SNDRV_CHMAP_RC, RC },
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{ SNDRV_CHMAP_FLC, FLC },
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{ SNDRV_CHMAP_FRC, FRC },
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{ SNDRV_CHMAP_TFL, FLH },
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{ SNDRV_CHMAP_TFR, FRH },
|
|
{ SNDRV_CHMAP_FLW, FLW },
|
|
{ SNDRV_CHMAP_FRW, FRW },
|
|
{ SNDRV_CHMAP_TC, TC },
|
|
{ SNDRV_CHMAP_TFC, FCH },
|
|
{} /* terminator */
|
|
};
|
|
|
|
/* from ALSA API channel position to speaker bit mask */
|
|
int snd_hdac_chmap_to_spk_mask(unsigned char c)
|
|
{
|
|
struct channel_map_table *t = map_tables;
|
|
|
|
for (; t->map; t++) {
|
|
if (t->map == c)
|
|
return t->spk_mask;
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_hdac_chmap_to_spk_mask);
|
|
|
|
/* from ALSA API channel position to CEA slot */
|
|
static int to_cea_slot(int ordered_ca, unsigned char pos)
|
|
{
|
|
int mask = snd_hdac_chmap_to_spk_mask(pos);
|
|
int i;
|
|
|
|
/* Add sanity check to pass klockwork check.
|
|
* This should never happen.
|
|
*/
|
|
if (ordered_ca >= ARRAY_SIZE(channel_allocations))
|
|
return -1;
|
|
|
|
if (mask) {
|
|
for (i = 0; i < 8; i++) {
|
|
if (channel_allocations[ordered_ca].speakers[7 - i] == mask)
|
|
return i;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
/* from speaker bit mask to ALSA API channel position */
|
|
int snd_hdac_spk_to_chmap(int spk)
|
|
{
|
|
struct channel_map_table *t = map_tables;
|
|
|
|
for (; t->map; t++) {
|
|
if (t->spk_mask == spk)
|
|
return t->map;
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_hdac_spk_to_chmap);
|
|
|
|
/* from CEA slot to ALSA API channel position */
|
|
static int from_cea_slot(int ordered_ca, unsigned char slot)
|
|
{
|
|
int mask;
|
|
|
|
/* Add sanity check to pass klockwork check.
|
|
* This should never happen.
|
|
*/
|
|
if (slot >= 8)
|
|
return 0;
|
|
|
|
mask = channel_allocations[ordered_ca].speakers[7 - slot];
|
|
|
|
return snd_hdac_spk_to_chmap(mask);
|
|
}
|
|
|
|
/* get the CA index corresponding to the given ALSA API channel map */
|
|
static int hdmi_manual_channel_allocation(int chs, unsigned char *map)
|
|
{
|
|
int i, spks = 0, spk_mask = 0;
|
|
|
|
for (i = 0; i < chs; i++) {
|
|
int mask = snd_hdac_chmap_to_spk_mask(map[i]);
|
|
|
|
if (mask) {
|
|
spk_mask |= mask;
|
|
spks++;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
|
|
if ((chs == channel_allocations[i].channels ||
|
|
spks == channel_allocations[i].channels) &&
|
|
(spk_mask & channel_allocations[i].spk_mask) ==
|
|
channel_allocations[i].spk_mask)
|
|
return channel_allocations[i].ca_index;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/* set up the channel slots for the given ALSA API channel map */
|
|
static int hdmi_manual_setup_channel_mapping(struct hdac_chmap *chmap,
|
|
hda_nid_t pin_nid,
|
|
int chs, unsigned char *map,
|
|
int ca)
|
|
{
|
|
int ordered_ca = get_channel_allocation_order(ca);
|
|
int alsa_pos, hdmi_slot;
|
|
int assignments[8] = {[0 ... 7] = 0xf};
|
|
|
|
for (alsa_pos = 0; alsa_pos < chs; alsa_pos++) {
|
|
|
|
hdmi_slot = to_cea_slot(ordered_ca, map[alsa_pos]);
|
|
|
|
if (hdmi_slot < 0)
|
|
continue; /* unassigned channel */
|
|
|
|
assignments[hdmi_slot] = alsa_pos;
|
|
}
|
|
|
|
for (hdmi_slot = 0; hdmi_slot < 8; hdmi_slot++) {
|
|
int err;
|
|
|
|
err = chmap->ops.pin_set_slot_channel(chmap->hdac,
|
|
pin_nid, hdmi_slot, assignments[hdmi_slot]);
|
|
if (err)
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* store ALSA API channel map from the current default map */
|
|
static void hdmi_setup_fake_chmap(unsigned char *map, int ca)
|
|
{
|
|
int i;
|
|
int ordered_ca = get_channel_allocation_order(ca);
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
if (ordered_ca < ARRAY_SIZE(channel_allocations) &&
|
|
i < channel_allocations[ordered_ca].channels)
|
|
map[i] = from_cea_slot(ordered_ca, hdmi_channel_mapping[ca][i] & 0x0f);
|
|
else
|
|
map[i] = 0;
|
|
}
|
|
}
|
|
|
|
void snd_hdac_setup_channel_mapping(struct hdac_chmap *chmap,
|
|
hda_nid_t pin_nid, bool non_pcm, int ca,
|
|
int channels, unsigned char *map,
|
|
bool chmap_set)
|
|
{
|
|
if (!non_pcm && chmap_set) {
|
|
hdmi_manual_setup_channel_mapping(chmap, pin_nid,
|
|
channels, map, ca);
|
|
} else {
|
|
hdmi_std_setup_channel_mapping(chmap, pin_nid, non_pcm, ca);
|
|
hdmi_setup_fake_chmap(map, ca);
|
|
}
|
|
|
|
hdmi_debug_channel_mapping(chmap, pin_nid);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_hdac_setup_channel_mapping);
|
|
|
|
int snd_hdac_get_active_channels(int ca)
|
|
{
|
|
int ordered_ca = get_channel_allocation_order(ca);
|
|
|
|
/* Add sanity check to pass klockwork check.
|
|
* This should never happen.
|
|
*/
|
|
if (ordered_ca >= ARRAY_SIZE(channel_allocations))
|
|
ordered_ca = 0;
|
|
|
|
return channel_allocations[ordered_ca].channels;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_hdac_get_active_channels);
|
|
|
|
struct hdac_cea_channel_speaker_allocation *snd_hdac_get_ch_alloc_from_ca(int ca)
|
|
{
|
|
return &channel_allocations[get_channel_allocation_order(ca)];
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_hdac_get_ch_alloc_from_ca);
|
|
|
|
int snd_hdac_channel_allocation(struct hdac_device *hdac, int spk_alloc,
|
|
int channels, bool chmap_set, bool non_pcm, unsigned char *map)
|
|
{
|
|
int ca;
|
|
|
|
if (!non_pcm && chmap_set)
|
|
ca = hdmi_manual_channel_allocation(channels, map);
|
|
else
|
|
ca = hdmi_channel_allocation_spk_alloc_blk(hdac,
|
|
spk_alloc, channels);
|
|
|
|
if (ca < 0)
|
|
ca = 0;
|
|
|
|
return ca;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_hdac_channel_allocation);
|
|
|
|
/*
|
|
* ALSA API channel-map control callbacks
|
|
*/
|
|
static int hdmi_chmap_ctl_info(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_info *uinfo)
|
|
{
|
|
struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
|
|
struct hdac_chmap *chmap = info->private_data;
|
|
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
|
|
uinfo->count = chmap->channels_max;
|
|
uinfo->value.integer.min = 0;
|
|
uinfo->value.integer.max = SNDRV_CHMAP_LAST;
|
|
return 0;
|
|
}
|
|
|
|
static int hdmi_chmap_cea_alloc_validate_get_type(struct hdac_chmap *chmap,
|
|
struct hdac_cea_channel_speaker_allocation *cap, int channels)
|
|
{
|
|
/* If the speaker allocation matches the channel count, it is OK.*/
|
|
if (cap->channels != channels)
|
|
return -1;
|
|
|
|
/* all channels are remappable freely */
|
|
return SNDRV_CTL_TLVT_CHMAP_VAR;
|
|
}
|
|
|
|
static void hdmi_cea_alloc_to_tlv_chmap(struct hdac_chmap *hchmap,
|
|
struct hdac_cea_channel_speaker_allocation *cap,
|
|
unsigned int *chmap, int channels)
|
|
{
|
|
int count = 0;
|
|
int c;
|
|
|
|
for (c = 7; c >= 0; c--) {
|
|
int spk = cap->speakers[c];
|
|
|
|
if (!spk)
|
|
continue;
|
|
|
|
chmap[count++] = snd_hdac_spk_to_chmap(spk);
|
|
}
|
|
|
|
WARN_ON(count != channels);
|
|
}
|
|
|
|
static int spk_mask_from_spk_alloc(int spk_alloc)
|
|
{
|
|
int i;
|
|
int spk_mask = eld_speaker_allocation_bits[0];
|
|
|
|
for (i = 0; i < ARRAY_SIZE(eld_speaker_allocation_bits); i++) {
|
|
if (spk_alloc & (1 << i))
|
|
spk_mask |= eld_speaker_allocation_bits[i];
|
|
}
|
|
|
|
return spk_mask;
|
|
}
|
|
|
|
static int hdmi_chmap_ctl_tlv(struct snd_kcontrol *kcontrol, int op_flag,
|
|
unsigned int size, unsigned int __user *tlv)
|
|
{
|
|
struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
|
|
struct hdac_chmap *chmap = info->private_data;
|
|
int pcm_idx = kcontrol->private_value;
|
|
unsigned int __user *dst;
|
|
int chs, count = 0;
|
|
unsigned long max_chs;
|
|
int type;
|
|
int spk_alloc, spk_mask;
|
|
|
|
if (size < 8)
|
|
return -ENOMEM;
|
|
if (put_user(SNDRV_CTL_TLVT_CONTAINER, tlv))
|
|
return -EFAULT;
|
|
size -= 8;
|
|
dst = tlv + 2;
|
|
|
|
spk_alloc = chmap->ops.get_spk_alloc(chmap->hdac, pcm_idx);
|
|
spk_mask = spk_mask_from_spk_alloc(spk_alloc);
|
|
|
|
max_chs = hweight_long(spk_mask);
|
|
|
|
for (chs = 2; chs <= max_chs; chs++) {
|
|
int i;
|
|
struct hdac_cea_channel_speaker_allocation *cap;
|
|
|
|
cap = channel_allocations;
|
|
for (i = 0; i < ARRAY_SIZE(channel_allocations); i++, cap++) {
|
|
int chs_bytes = chs * 4;
|
|
unsigned int tlv_chmap[8];
|
|
|
|
if (cap->channels != chs)
|
|
continue;
|
|
|
|
if (!(cap->spk_mask == (spk_mask & cap->spk_mask)))
|
|
continue;
|
|
|
|
type = chmap->ops.chmap_cea_alloc_validate_get_type(
|
|
chmap, cap, chs);
|
|
if (type < 0)
|
|
return -ENODEV;
|
|
if (size < 8)
|
|
return -ENOMEM;
|
|
|
|
if (put_user(type, dst) ||
|
|
put_user(chs_bytes, dst + 1))
|
|
return -EFAULT;
|
|
|
|
dst += 2;
|
|
size -= 8;
|
|
count += 8;
|
|
|
|
if (size < chs_bytes)
|
|
return -ENOMEM;
|
|
|
|
size -= chs_bytes;
|
|
count += chs_bytes;
|
|
chmap->ops.cea_alloc_to_tlv_chmap(chmap, cap,
|
|
tlv_chmap, chs);
|
|
|
|
if (copy_to_user(dst, tlv_chmap, chs_bytes))
|
|
return -EFAULT;
|
|
dst += chs;
|
|
}
|
|
}
|
|
|
|
if (put_user(count, tlv + 1))
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hdmi_chmap_ctl_get(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
|
|
struct hdac_chmap *chmap = info->private_data;
|
|
int pcm_idx = kcontrol->private_value;
|
|
unsigned char pcm_chmap[8];
|
|
int i;
|
|
|
|
memset(pcm_chmap, 0, sizeof(pcm_chmap));
|
|
chmap->ops.get_chmap(chmap->hdac, pcm_idx, pcm_chmap);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(pcm_chmap); i++)
|
|
ucontrol->value.integer.value[i] = pcm_chmap[i];
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hdmi_chmap_ctl_put(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
|
|
struct hdac_chmap *hchmap = info->private_data;
|
|
int pcm_idx = kcontrol->private_value;
|
|
unsigned int ctl_idx;
|
|
struct snd_pcm_substream *substream;
|
|
unsigned char chmap[8], per_pin_chmap[8];
|
|
int i, err, ca, prepared = 0;
|
|
|
|
/* No monitor is connected in dyn_pcm_assign.
|
|
* It's invalid to setup the chmap
|
|
*/
|
|
if (!hchmap->ops.is_pcm_attached(hchmap->hdac, pcm_idx))
|
|
return 0;
|
|
|
|
ctl_idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
|
|
substream = snd_pcm_chmap_substream(info, ctl_idx);
|
|
if (!substream || !substream->runtime)
|
|
return 0; /* just for avoiding error from alsactl restore */
|
|
switch (substream->runtime->status->state) {
|
|
case SNDRV_PCM_STATE_OPEN:
|
|
case SNDRV_PCM_STATE_SETUP:
|
|
break;
|
|
case SNDRV_PCM_STATE_PREPARED:
|
|
prepared = 1;
|
|
break;
|
|
default:
|
|
return -EBUSY;
|
|
}
|
|
memset(chmap, 0, sizeof(chmap));
|
|
for (i = 0; i < ARRAY_SIZE(chmap); i++)
|
|
chmap[i] = ucontrol->value.integer.value[i];
|
|
|
|
hchmap->ops.get_chmap(hchmap->hdac, pcm_idx, per_pin_chmap);
|
|
if (!memcmp(chmap, per_pin_chmap, sizeof(chmap)))
|
|
return 0;
|
|
ca = hdmi_manual_channel_allocation(ARRAY_SIZE(chmap), chmap);
|
|
if (ca < 0)
|
|
return -EINVAL;
|
|
if (hchmap->ops.chmap_validate) {
|
|
err = hchmap->ops.chmap_validate(hchmap, ca,
|
|
ARRAY_SIZE(chmap), chmap);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
hchmap->ops.set_chmap(hchmap->hdac, pcm_idx, chmap, prepared);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct hdac_chmap_ops chmap_ops = {
|
|
.chmap_cea_alloc_validate_get_type = hdmi_chmap_cea_alloc_validate_get_type,
|
|
.cea_alloc_to_tlv_chmap = hdmi_cea_alloc_to_tlv_chmap,
|
|
.pin_get_slot_channel = hdmi_pin_get_slot_channel,
|
|
.pin_set_slot_channel = hdmi_pin_set_slot_channel,
|
|
.set_channel_count = hdmi_set_channel_count,
|
|
};
|
|
|
|
void snd_hdac_register_chmap_ops(struct hdac_device *hdac,
|
|
struct hdac_chmap *chmap)
|
|
{
|
|
chmap->ops = chmap_ops;
|
|
chmap->hdac = hdac;
|
|
init_channel_allocations();
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_hdac_register_chmap_ops);
|
|
|
|
int snd_hdac_add_chmap_ctls(struct snd_pcm *pcm, int pcm_idx,
|
|
struct hdac_chmap *hchmap)
|
|
{
|
|
struct snd_pcm_chmap *chmap;
|
|
struct snd_kcontrol *kctl;
|
|
int err, i;
|
|
|
|
err = snd_pcm_add_chmap_ctls(pcm,
|
|
SNDRV_PCM_STREAM_PLAYBACK,
|
|
NULL, 0, pcm_idx, &chmap);
|
|
if (err < 0)
|
|
return err;
|
|
/* override handlers */
|
|
chmap->private_data = hchmap;
|
|
kctl = chmap->kctl;
|
|
for (i = 0; i < kctl->count; i++)
|
|
kctl->vd[i].access |= SNDRV_CTL_ELEM_ACCESS_WRITE;
|
|
kctl->info = hdmi_chmap_ctl_info;
|
|
kctl->get = hdmi_chmap_ctl_get;
|
|
kctl->put = hdmi_chmap_ctl_put;
|
|
kctl->tlv.c = hdmi_chmap_ctl_tlv;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_hdac_add_chmap_ctls);
|