Adding upstream version 6.1.76.upstream/6.1.76

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

1 files changed, 103 insertions, 0 deletions

diff --git a/drivers/media/pci/ddbridge/ddbridge-i2c.h b/drivers/media/pci/ddbridge/ddbridge-i2c.h
new file mode 100644
index 000000000..48555d41a
--- /dev/null
+++ b/drivers/media/pci/ddbridge/ddbridge-i2c.h
@@ -0,0 +1,103 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * ddbridge-i2c.h: Digital Devices bridge i2c driver
+ *
+ * Copyright (C) 2010-2017 Digital Devices GmbH
+ *                         Ralph Metzler <rjkm@metzlerbros.de>
+ *                         Marcus Metzler <mocm@metzlerbros.de>
+ */
+
+#ifndef __DDBRIDGE_I2C_H__
+#define __DDBRIDGE_I2C_H__
+
+#include <linux/i2c.h>
+
+#include "ddbridge.h"
+
+/******************************************************************************/
+
+void ddb_i2c_release(struct ddb *dev);
+int ddb_i2c_init(struct ddb *dev);
+
+/******************************************************************************/
+
+static int __maybe_unused i2c_io(struct i2c_adapter *adapter, u8 adr,
+				 u8 *wbuf, u32 wlen, u8 *rbuf, u32 rlen)
+{
+	struct i2c_msg msgs[2] = { { .addr = adr,  .flags = 0,
+				     .buf  = wbuf, .len   = wlen },
+				   { .addr = adr,  .flags = I2C_M_RD,
+				     .buf  = rbuf, .len   = rlen } };
+
+	return (i2c_transfer(adapter, msgs, 2) == 2) ? 0 : -1;
+}
+
+static int __maybe_unused i2c_write(struct i2c_adapter *adap, u8 adr,
+				    u8 *data, int len)
+{
+	struct i2c_msg msg = { .addr = adr, .flags = 0,
+			       .buf = data, .len = len };
+
+	return (i2c_transfer(adap, &msg, 1) == 1) ? 0 : -1;
+}
+
+static int __maybe_unused i2c_read(struct i2c_adapter *adapter, u8 adr, u8 *val)
+{
+	struct i2c_msg msgs[1] = { { .addr = adr, .flags = I2C_M_RD,
+				     .buf  = val, .len   = 1 } };
+
+	return (i2c_transfer(adapter, msgs, 1) == 1) ? 0 : -1;
+}
+
+static int __maybe_unused i2c_read_regs(struct i2c_adapter *adapter,
+					u8 adr, u8 reg, u8 *val, u8 len)
+{
+	struct i2c_msg msgs[2] = { { .addr = adr,  .flags = 0,
+				     .buf  = &reg, .len   = 1 },
+				   { .addr = adr,  .flags = I2C_M_RD,
+				     .buf  = val,  .len   = len } };
+
+	return (i2c_transfer(adapter, msgs, 2) == 2) ? 0 : -1;
+}
+
+static int __maybe_unused i2c_read_regs16(struct i2c_adapter *adapter,
+					  u8 adr, u16 reg, u8 *val, u8 len)
+{
+	u8 msg[2] = { reg >> 8, reg & 0xff };
+	struct i2c_msg msgs[2] = { { .addr = adr, .flags = 0,
+				     .buf  = msg, .len   = 2 },
+				   { .addr = adr, .flags = I2C_M_RD,
+				     .buf  = val, .len   = len } };
+
+	return (i2c_transfer(adapter, msgs, 2) == 2) ? 0 : -1;
+}
+
+static int __maybe_unused i2c_write_reg16(struct i2c_adapter *adap,
+					  u8 adr, u16 reg, u8 val)
+{
+	u8 msg[3] = { reg >> 8, reg & 0xff, val };
+
+	return i2c_write(adap, adr, msg, 3);
+}
+
+static int __maybe_unused i2c_write_reg(struct i2c_adapter *adap,
+					u8 adr, u8 reg, u8 val)
+{
+	u8 msg[2] = { reg, val };
+
+	return i2c_write(adap, adr, msg, 2);
+}
+
+static int __maybe_unused i2c_read_reg16(struct i2c_adapter *adapter,
+					 u8 adr, u16 reg, u8 *val)
+{
+	return i2c_read_regs16(adapter, adr, reg, val, 1);
+}
+
+static int __maybe_unused i2c_read_reg(struct i2c_adapter *adapter,
+				       u8 adr, u8 reg, u8 *val)
+{
+	return i2c_read_regs(adapter, adr, reg, val, 1);
+}
+
+#endif /* __DDBRIDGE_I2C_H__ */