/* SPDX-License-Identifier: GPL-2.0 */

#ifndef __LATTICE_SYSCONFIG_H
#define __LATTICE_SYSCONFIG_H

#define SYSCONFIG_ISC_ENABLE            {0xC6, 0x00, 0x00, 0x00}
#define SYSCONFIG_ISC_DISABLE           {0x26, 0x00, 0x00, 0x00}
#define SYSCONFIG_ISC_ERASE             {0x0E, 0x01, 0x00, 0x00}
#define SYSCONFIG_LSC_READ_STATUS       {0x3C, 0x00, 0x00, 0x00}
#define SYSCONFIG_LSC_CHECK_BUSY        {0xF0, 0x00, 0x00, 0x00}
#define SYSCONFIG_LSC_REFRESH           {0x79, 0x00, 0x00, 0x00}
#define SYSCONFIG_LSC_INIT_ADDR         {0x46, 0x00, 0x00, 0x00}
#define SYSCONFIG_LSC_BITSTREAM_BURST   {0x7a, 0x00, 0x00, 0x00}

#define SYSCONFIG_STATUS_DONE           BIT(8)
#define SYSCONFIG_STATUS_BUSY           BIT(12)
#define SYSCONFIG_STATUS_FAIL           BIT(13)
#define SYSCONFIG_STATUS_ERR            GENMASK(25, 23)

#define SYSCONFIG_POLL_INTERVAL_US      30
#define SYSCONFIG_POLL_BUSY_TIMEOUT_US  1000000
#define SYSCONFIG_POLL_GPIO_TIMEOUT_US  100000

struct sysconfig_priv {
        struct gpio_desc *program;
        struct gpio_desc *init;
        struct gpio_desc *done;
        struct device *dev;
        int (*command_transfer)(struct sysconfig_priv *priv, const void *tx_buf,
                                size_t tx_len, void *rx_buf, size_t rx_len);
        int (*bitstream_burst_write_init)(struct sysconfig_priv *priv);
        int (*bitstream_burst_write)(struct sysconfig_priv *priv,
                                     const char *tx_buf, size_t tx_len);
        int (*bitstream_burst_write_complete)(struct sysconfig_priv *priv);
};

int sysconfig_probe(struct sysconfig_priv *priv);

#endif /* __LATTICE_SYSCONFIG_H */