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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include <baseboard/cbi_ssfc.h>
#include <console/console.h>
#include <ec/google/chromeec/ec.h>
static int get_ssfc(uint32_t *val)
{
static uint32_t known_value;
static enum {
SSFC_NOT_READ,
SSFC_AVAILABLE,
} ssfc_state = SSFC_NOT_READ;
if (ssfc_state == SSFC_AVAILABLE) {
*val = known_value;
return 0;
}
/*
* If SSFC field is not in the CBI then the value of SSFC will be 0 for
* further processing later since 0 of each bits group means default
* component in a variant. For more detail, please refer to cbi_ssfc.h.
*/
if (google_chromeec_cbi_get_ssfc(&known_value) != 0) {
printk(BIOS_DEBUG, "SSFC not set in CBI\n");
return -1;
}
ssfc_state = SSFC_AVAILABLE;
*val = known_value;
printk(BIOS_INFO, "SSFC 0x%x.\n", known_value);
return 0;
}
static unsigned int extract_field(uint32_t mask, int shift)
{
uint32_t ssfc;
/* On errors nothing is assumed to be set. */
if (get_ssfc(&ssfc))
return 0;
return (ssfc >> shift) & mask;
}
static enum ssfc_audio_codec ssfc_get_default_audio_codec(void)
{
/*
* Octopus has two reference boards; yorp is with DA7219 and bip is with
* RT5682. Currently only AMPTON derived from bip so only it uses
* RT5682 as the default source in the first MP devices.
*/
if (CONFIG(BOARD_GOOGLE_AMPTON))
return SSFC_AUDIO_CODEC_RT5682;
return SSFC_AUDIO_CODEC_DA7219;
}
enum ssfc_audio_codec ssfc_get_audio_codec(void)
{
uint32_t codec = extract_field(
SSFC_AUDIO_CODEC_MASK, SSFC_AUDIO_CODEC_OFFSET);
if (codec != SSFC_AUDIO_CODEC_DEFAULT)
return codec;
return ssfc_get_default_audio_codec();
}
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