acp_gen1.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <amdblocks/acp.h>
#include <amdblocks/chip.h>
#include <device/device.h>
#include <device/mmio.h>
#include <console/console.h>
#include "acp_def.h"
 
/* ACP registers and associated fields */
#define ACP_I2S_PIN_CONFIG      0x1400  /* HDA, Soundwire, I2S */
#define  PIN_CONFIG_MASK        (7 << 0)
#define ACP_I2S_WAKE_EN         0x1414
#define  WAKE_EN_MASK           (1 << 0)
#define ACP_PME_EN              0x1418
#define  PME_EN_MASK            (1 << 0)
 
static void acp_update32(uintptr_t bar, uint32_t reg, uint32_t clear, uint32_t set)
{
        clrsetbits32((void *)(bar + reg), clear, set);
}
 
void acp_init(struct device *dev)
{
        const struct soc_amd_common_config *cfg = soc_get_common_config();
        struct resource *res;
        uintptr_t bar;
 
        res = dev->resource_list;
        if (!res || !res->base) {
                printk(BIOS_ERR, "Error, unable to configure pin in %s\n", __func__);
                return;
        }
 
        /* Set the proper I2S_PIN_CONFIG state */
        bar = (uintptr_t)res->base;
        acp_update32(bar, ACP_I2S_PIN_CONFIG, PIN_CONFIG_MASK, cfg->acp_config.acp_pin_cfg);
 
        /* Enable ACP_PME_EN and ACP_I2S_WAKE_EN for I2S_WAKE event */
        acp_update32(bar, ACP_I2S_WAKE_EN, WAKE_EN_MASK, !!cfg->acp_config.acp_i2s_wake_enable);
        acp_update32(bar, ACP_PME_EN, PME_EN_MASK, !!cfg->acp_config.acp_pme_enable);
}