Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 74 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_gnss.h b/drivers/net/ethernet/intel/ice/ice_gnss.h
new file mode 100644
index 000000000..f454dd1d9
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_gnss.h
@@ -0,0 +1,74 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2021-2022, Intel Corporation. */
+
+#ifndef _ICE_GNSS_H_
+#define _ICE_GNSS_H_
+
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+
+#define ICE_E810T_GNSS_I2C_BUS		0x2
+#define ICE_GNSS_TIMER_DELAY_TIME	(HZ / 10) /* 0.1 second per message */
+/* Create 2 minor devices, both using the same GNSS module. First one is RW,
+ * second one RO.
+ */
+#define ICE_GNSS_TTY_MINOR_DEVICES	2
+#define ICE_GNSS_TTY_WRITE_BUF		250
+#define ICE_MAX_I2C_DATA_SIZE		FIELD_MAX(ICE_AQC_I2C_DATA_SIZE_M)
+#define ICE_MAX_I2C_WRITE_BYTES		4
+
+/* u-blox ZED-F9T specific definitions */
+#define ICE_GNSS_UBX_I2C_BUS_ADDR	0x42
+/* Data length register is big endian */
+#define ICE_GNSS_UBX_DATA_LEN_H		0xFD
+#define ICE_GNSS_UBX_DATA_LEN_WIDTH	2
+#define ICE_GNSS_UBX_EMPTY_DATA		0xFF
+/* For u-blox writes are performed without address so the first byte to write is
+ * passed as I2C addr parameter.
+ */
+#define ICE_GNSS_UBX_WRITE_BYTES	(ICE_MAX_I2C_WRITE_BYTES + 1)
+#define ICE_MAX_UBX_READ_TRIES		255
+#define ICE_MAX_UBX_ACK_READ_TRIES	4095
+
+struct gnss_write_buf {
+	struct list_head queue;
+	unsigned int size;
+	unsigned char *buf;
+};
+
+
+/**
+ * struct gnss_serial - data used to initialize GNSS TTY port
+ * @back: back pointer to PF
+ * @tty: pointer to the tty for this device
+ * @open_count: number of times this port has been opened
+ * @gnss_mutex: gnss_mutex used to protect GNSS serial operations
+ * @kworker: kwork thread for handling periodic work
+ * @read_work: read_work function for handling GNSS reads
+ * @write_work: write_work function for handling GNSS writes
+ * @queue: write buffers queue
+ */
+struct gnss_serial {
+	struct ice_pf *back;
+	struct tty_struct *tty;
+	int open_count;
+	struct mutex gnss_mutex; /* protects GNSS serial structure */
+	struct kthread_worker *kworker;
+	struct kthread_delayed_work read_work;
+	struct kthread_work write_work;
+	struct list_head queue;
+};
+
+#if IS_ENABLED(CONFIG_TTY)
+void ice_gnss_init(struct ice_pf *pf);
+void ice_gnss_exit(struct ice_pf *pf);
+bool ice_gnss_is_gps_present(struct ice_hw *hw);
+#else
+static inline void ice_gnss_init(struct ice_pf *pf) { }
+static inline void ice_gnss_exit(struct ice_pf *pf) { }
+static inline bool ice_gnss_is_gps_present(struct ice_hw *hw)
+{
+	return false;
+}
+#endif /* IS_ENABLED(CONFIG_TTY) */
+#endif /* _ICE_GNSS_H_ */