drivers/fpga/lattice-sysconfig.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2
   3 #ifndef __LATTICE_SYSCONFIG_H
   4 #define __LATTICE_SYSCONFIG_H
   5
   6 #define SYSCONFIG_ISC_ENABLE            {0xC6, 0x00, 0x00, 0x00}
   7 #define SYSCONFIG_ISC_DISABLE           {0x26, 0x00, 0x00, 0x00}
   8 #define SYSCONFIG_ISC_ERASE             {0x0E, 0x01, 0x00, 0x00}
   9 #define SYSCONFIG_LSC_READ_STATUS       {0x3C, 0x00, 0x00, 0x00}
  10 #define SYSCONFIG_LSC_CHECK_BUSY        {0xF0, 0x00, 0x00, 0x00}
  11 #define SYSCONFIG_LSC_REFRESH           {0x79, 0x00, 0x00, 0x00}
  12 #define SYSCONFIG_LSC_INIT_ADDR         {0x46, 0x00, 0x00, 0x00}
  13 #define SYSCONFIG_LSC_BITSTREAM_BURST   {0x7a, 0x00, 0x00, 0x00}
  14
  15 #define SYSCONFIG_STATUS_DONE           BIT(8)
  16 #define SYSCONFIG_STATUS_BUSY           BIT(12)
  17 #define SYSCONFIG_STATUS_FAIL           BIT(13)
  18 #define SYSCONFIG_STATUS_ERR            GENMASK(25, 23)
  19
  20 #define SYSCONFIG_POLL_INTERVAL_US      30
  21 #define SYSCONFIG_POLL_BUSY_TIMEOUT_US  1000000
  22 #define SYSCONFIG_POLL_GPIO_TIMEOUT_US  100000
  23
  24 struct sysconfig_priv {
  25         struct gpio_desc *program;
  26         struct gpio_desc *init;
  27         struct gpio_desc *done;
  28         struct device *dev;
  29         int (*command_transfer)(struct sysconfig_priv *priv, const void *tx_buf,
  30                                 size_t tx_len, void *rx_buf, size_t rx_len);
  31         int (*bitstream_burst_write_init)(struct sysconfig_priv *priv);
  32         int (*bitstream_burst_write)(struct sysconfig_priv *priv,
  33                                      const char *tx_buf, size_t tx_len);
  34         int (*bitstream_burst_write_complete)(struct sysconfig_priv *priv);
  35 };
  36
  37 int sysconfig_probe(struct sysconfig_priv *priv);
  38
  39 #endif /* __LATTICE_SYSCONFIG_H */