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-rw-r--r--drivers/fpga/lattice-sysconfig.h39
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/fpga/lattice-sysconfig.h b/drivers/fpga/lattice-sysconfig.h
new file mode 100644
index 0000000000..df47d9a524
--- /dev/null
+++ b/drivers/fpga/lattice-sysconfig.h
@@ -0,0 +1,39 @@
+/* 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 */