Module Name: src
Committed By: jmcneill
Date: Tue Mar 31 14:39:44 UTC 2020
Added Files:
src/sys/arch/arm/broadcom: bcm2835_bscvar.h
Log Message:
Add bcm2835_bscvar.h
To generate a diff of this commit:
cvs rdiff -u -r0 -r1.1 src/sys/arch/arm/broadcom/bcm2835_bscvar.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Added files:
Index: src/sys/arch/arm/broadcom/bcm2835_bscvar.h
diff -u /dev/null src/sys/arch/arm/broadcom/bcm2835_bscvar.h:1.1
--- /dev/null Tue Mar 31 14:39:44 2020
+++ src/sys/arch/arm/broadcom/bcm2835_bscvar.h Tue Mar 31 14:39:44 2020
@@ -0,0 +1,100 @@
+/* $NetBSD: bcm2835_bscvar.h,v 1.1 2020/03/31 14:39:44 jmcneill Exp $ */
+
+/*
+ * Copyright (c) 2019 Jason R. Thorpe
+ * Copyright (c) 2012 Jonathan A. Kollasch
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _BCM2835_BSCVAR_H
+#define _BCM2835_BSCVAR_H
+
+#include <dev/i2c/i2cvar.h>
+
+typedef enum {
+ BSC_EXEC_STATE_IDLE = 0,
+ BSC_EXEC_STATE_SEND_ADDR = 1,
+ BSC_EXEC_STATE_SEND_CMD = 2,
+ BSC_EXEC_STATE_SEND_DATA = 3,
+ BSC_EXEC_STATE_RECV_DATA = 4,
+ BSC_EXEC_STATE_DONE = 5,
+ BSC_EXEC_STATE_ERROR = 6,
+} bsc_exec_state_t;
+
+#define BSC_EXEC_STATE_SENDING(sc) \
+ ((sc)->sc_exec_state >= BSC_EXEC_STATE_SEND_ADDR && \
+ (sc)->sc_exec_state <= BSC_EXEC_STATE_SEND_DATA)
+
+#define BSC_EXEC_STATE_RECEIVING(sc) \
+ ((sc)->sc_exec_state == BSC_EXEC_STATE_RECV_DATA)
+
+struct bsciic_softc {
+ device_t sc_dev;
+ bus_space_tag_t sc_iot;
+ bus_space_handle_t sc_ioh;
+ struct i2c_controller sc_i2c;
+ void *sc_inth;
+
+ struct clk *sc_clk;
+ u_int sc_frequency;
+ u_int sc_clkrate;
+
+ kmutex_t sc_intr_lock;
+ kcondvar_t sc_intr_wait;
+
+ struct {
+ i2c_op_t op;
+ i2c_addr_t addr;
+ const void *cmdbuf;
+ size_t cmdlen;
+ void *databuf;
+ size_t datalen;
+ int flags;
+ } sc_exec;
+
+ /*
+ * Everything below here protected by the i2c controller lock
+ * /and/ sc_intr_lock (if we're using interrupts).
+ */
+
+ bsc_exec_state_t sc_exec_state;
+
+ uint8_t *sc_buf;
+ size_t sc_bufpos;
+ size_t sc_buflen;
+
+ uint32_t sc_c_bits;
+ bool sc_expecting_interrupt;
+};
+
+void bsciic_attach(struct bsciic_softc *);
+
+int bsciic_acquire_bus(void *, int);
+void bsciic_release_bus(void *, int);
+int bsciic_exec(void *, i2c_op_t, i2c_addr_t, const void *, size_t,
+ void *, size_t, int);
+
+int bsciic_intr(void *);
+
+#endif /* !_BCM2835_BSCVAR_H */
