1 files changed, 117 insertions, 0 deletions
diff --git a/include/soc/fsl/qe/qmc.h b/include/soc/fsl/qe/qmc.h
new file mode 100644
index 000000000000..294e42ea8d4c
--- /dev/null
+++ b/include/soc/fsl/qe/qmc.h
@@ -0,0 +1,117 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * QMC management
+ *
+ * Copyright 2022 CS GROUP France
+ *
+ * Author: Herve Codina <herve.codina@bootlin.com>
+ */
+#ifndef __SOC_FSL_QMC_H__
+#define __SOC_FSL_QMC_H__
+
+#include <linux/bits.h>
+#include <linux/types.h>
+
+struct device_node;
+struct device;
+struct qmc_chan;
+
+int qmc_chan_count_phandles(struct device_node *np, const char *phandles_name);
+
+struct qmc_chan *qmc_chan_get_byphandles_index(struct device_node *np,
+					       const char *phandles_name,
+					       int index);
+struct qmc_chan *devm_qmc_chan_get_byphandles_index(struct device *dev,
+						    struct device_node *np,
+						    const char *phandles_name,
+						    int index);
+
+static inline struct qmc_chan *qmc_chan_get_byphandle(struct device_node *np,
+						      const char *phandle_name)
+{
+	return qmc_chan_get_byphandles_index(np, phandle_name, 0);
+}
+
+static inline struct qmc_chan *devm_qmc_chan_get_byphandle(struct device *dev,
+							   struct device_node *np,
+							   const char *phandle_name)
+{
+	return devm_qmc_chan_get_byphandles_index(dev, np, phandle_name, 0);
+}
+
+struct qmc_chan *qmc_chan_get_bychild(struct device_node *np);
+void qmc_chan_put(struct qmc_chan *chan);
+
+struct qmc_chan *devm_qmc_chan_get_bychild(struct device *dev, struct device_node *np);
+
+enum qmc_mode {
+	QMC_TRANSPARENT,
+	QMC_HDLC,
+};
+
+struct qmc_chan_info {
+	enum qmc_mode mode;
+	unsigned long rx_fs_rate;
+	unsigned long rx_bit_rate;
+	u8 nb_rx_ts;
+	unsigned long tx_fs_rate;
+	unsigned long tx_bit_rate;
+	u8 nb_tx_ts;
+};
+
+int qmc_chan_get_info(struct qmc_chan *chan, struct qmc_chan_info *info);
+
+struct qmc_chan_ts_info {
+	u64 rx_ts_mask_avail;
+	u64 tx_ts_mask_avail;
+	u64 rx_ts_mask;
+	u64 tx_ts_mask;
+};
+
+int qmc_chan_get_ts_info(struct qmc_chan *chan, struct qmc_chan_ts_info *ts_info);
+int qmc_chan_set_ts_info(struct qmc_chan *chan, const struct qmc_chan_ts_info *ts_info);
+
+struct qmc_chan_param {
+	enum qmc_mode mode;
+	union {
+		struct {
+			u16 max_rx_buf_size;
+			u16 max_rx_frame_size;
+			bool is_crc32;
+		} hdlc;
+		struct {
+			u16 max_rx_buf_size;
+		} transp;
+	};
+};
+
+int qmc_chan_set_param(struct qmc_chan *chan, const struct qmc_chan_param *param);
+
+int qmc_chan_write_submit(struct qmc_chan *chan, dma_addr_t addr, size_t length,
+			  void (*complete)(void *context), void *context);
+
+/* Flags available (ORed) for read complete() flags parameter in HDLC mode.
+ * No flags are available in transparent mode and the read complete() flags
+ * parameter has no meaning in transparent mode.
+ */
+#define QMC_RX_FLAG_HDLC_LAST	BIT(11) /* Last in frame */
+#define QMC_RX_FLAG_HDLC_FIRST	BIT(10) /* First in frame */
+#define QMC_RX_FLAG_HDLC_OVF	BIT(5)  /* Data overflow */
+#define QMC_RX_FLAG_HDLC_UNA	BIT(4)  /* Unaligned (ie. bits received not multiple of 8) */
+#define QMC_RX_FLAG_HDLC_ABORT	BIT(3)  /* Received an abort sequence (seven consecutive ones) */
+#define QMC_RX_FLAG_HDLC_CRC	BIT(2)  /* CRC error */
+
+int qmc_chan_read_submit(struct qmc_chan *chan, dma_addr_t addr, size_t length,
+			 void (*complete)(void *context, size_t length,
+					  unsigned int flags),
+			 void *context);
+
+#define QMC_CHAN_READ  (1<<0)
+#define QMC_CHAN_WRITE (1<<1)
+#define QMC_CHAN_ALL   (QMC_CHAN_READ | QMC_CHAN_WRITE)
+
+int qmc_chan_start(struct qmc_chan *chan, int direction);
+int qmc_chan_stop(struct qmc_chan *chan, int direction);
+int qmc_chan_reset(struct qmc_chan *chan, int direction);
+
+#endif /* __SOC_FSL_QMC_H__ */