pinebuds/platform/hal/hal_phyif.c

/***************************************************************************
 *
 * Copyright 2015-2019 BES.
 * All rights reserved. All unpublished rights reserved.
 *
 * No part of this work may be used or reproduced in any form or by any
 * means, or stored in a database or retrieval system, without prior written
 * permission of BES.
 *
 * Use of this work is governed by a license granted by BES.
 * This work contains confidential and proprietary information of
 * BES. which is protected by copyright, trade secret,
 * trademark and other intellectual property rights.
 *
 ****************************************************************************/
#ifdef CHIP_HAS_SPIPHY

#include "plat_types.h"
#include "cmsis.h"
#include "hal_phyif.h"
#include "hal_spi.h"
#include "hal_location.h"

#define PHY_READ_CMD(r)                 ((1 << 24) | (((r) & 0xFF) << 16))
#define PHY_WRITE_CMD(r, v)             ((((r) & 0xFF) << 16) | ((v) & 0xFFFF))
#define PHY_READ_VAL(v)                 ((v) & 0xFFFF)

#define SPIPHY_REG_CS(r)                ((r) >> 12)
#define SPIPHY_REG_PAGE(r)              (((r) >> 8) & 0xF)
#define SPIPHY_REG_OFFSET(r)            ((r) & 0xFF)

static const struct HAL_SPI_CFG_T spi_cfg = {
    .clk_delay_half = false,
    .clk_polarity = false,
    .slave = false,
    .dma_rx = false,
    .dma_tx = false,
    .rx_sep_line = true,
    .cs = 0,
    .rate = 6500000,
    .tx_bits = 25,
    .rx_bits = 25,
    .rx_frame_bits = 0,
};

static uint8_t BOOT_BSS_LOC phyif_open_map;

static uint8_t BOOT_BSS_LOC phy_cs;

static int hal_phyif_rawread(unsigned short reg, unsigned short *val)
{
    int ret;
    unsigned int data;
    unsigned int cmd;

    data = 0;
    cmd = PHY_READ_CMD(reg);
    ret = hal_spiphy_recv(&cmd, &data, 4);
    if (ret) {
        return ret;
    }
    *val = PHY_READ_VAL(data);
    return 0;
}

static int hal_phyif_rawwrite(unsigned short reg, unsigned short val)
{
    int ret;
    unsigned int cmd;

    cmd = PHY_WRITE_CMD(reg, val);
    ret = hal_spiphy_send(&cmd, 4);
    if (ret) {
        return ret;
    }
    return 0;
}

int hal_phyif_reg_read(unsigned short reg, unsigned short *val)
{
    uint32_t lock;
    int ret;
    uint8_t cs;
    //uint8_t page;

    cs = SPIPHY_REG_CS(reg);
    //page = SPIPHY_REG_PAGE(reg);
    reg = SPIPHY_REG_OFFSET(reg);

    lock = int_lock();
    if (cs != phy_cs) {
        hal_spiphy_activate_cs(cs);
        phy_cs = cs;
    }
    ret = hal_phyif_rawread(reg, val);
    int_unlock(lock);

    return ret;
}

int hal_phyif_reg_write(unsigned short reg, unsigned short val)
{
    uint32_t lock;
    int ret;
    uint8_t cs;
    //uint8_t page;

    cs = SPIPHY_REG_CS(reg);
    //page = SPIPHY_REG_PAGE(reg);
    reg = SPIPHY_REG_OFFSET(reg);

    lock = int_lock();
    if (cs != phy_cs) {
        hal_spiphy_activate_cs(cs);
        phy_cs = cs;
    }
    ret = hal_phyif_rawwrite(reg, val);
    int_unlock(lock);

    return ret;
}

int hal_phyif_open(uint32_t cs)
{
    int ret;
    uint32_t lock;

    ret = 0;

    lock = int_lock();
    if (phyif_open_map == 0) {
        ret = hal_spiphy_open(&spi_cfg);
    }
    if (ret == 0) {
        phyif_open_map |= (1 << cs);
    }
    int_unlock(lock);

    return ret;
}

int hal_phyif_close(uint32_t cs)
{
    int ret;
    uint32_t lock;

    ret = 0;

    lock = int_lock();
    phyif_open_map &= ~(1 << cs);
    if (phyif_open_map == 0) {
        ret = hal_spiphy_close(spi_cfg.cs);
    }
    int_unlock(lock);

    return ret;
}

#endif