Adding upstream version 6.1.76.upstream/6.1.76

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

1 files changed, 173 insertions, 0 deletions

diff --git a/drivers/media/pci/cx88/cx88-i2c.c b/drivers/media/pci/cx88/cx88-i2c.c
new file mode 100644
index 000000000..7fc64aef1
--- /dev/null
+++ b/drivers/media/pci/cx88/cx88-i2c.c
@@ -0,0 +1,173 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+/*
+ *
+ * cx88-i2c.c  --  all the i2c code is here
+ *
+ * Copyright (C) 1996,97,98 Ralph  Metzler (rjkm@thp.uni-koeln.de)
+ *			   & Marcus Metzler (mocm@thp.uni-koeln.de)
+ * (c) 2002 Yurij Sysoev <yurij@naturesoft.net>
+ * (c) 1999-2003 Gerd Knorr <kraxel@bytesex.org>
+ * (c) 2005 Mauro Carvalho Chehab <mchehab@kernel.org>
+ *	- Multituner support and i2c address binding
+ */
+
+#include "cx88.h"
+
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/module.h>
+
+#include <media/v4l2-common.h>
+
+static unsigned int i2c_debug;
+module_param(i2c_debug, int, 0644);
+MODULE_PARM_DESC(i2c_debug, "enable debug messages [i2c]");
+
+static unsigned int i2c_scan;
+module_param(i2c_scan, int, 0444);
+MODULE_PARM_DESC(i2c_scan, "scan i2c bus at insmod time");
+
+static unsigned int i2c_udelay = 5;
+module_param(i2c_udelay, int, 0644);
+MODULE_PARM_DESC(i2c_udelay,
+		 "i2c delay at insmod time, in usecs (should be 5 or higher). Lower value means higher bus speed.");
+
+#define dprintk(level, fmt, arg...) do {				\
+	if (i2c_debug >= level)						\
+		printk(KERN_DEBUG pr_fmt("%s: i2c:" fmt),		\
+			__func__, ##arg);				\
+} while (0)
+
+/* ----------------------------------------------------------------------- */
+
+static void cx8800_bit_setscl(void *data, int state)
+{
+	struct cx88_core *core = data;
+
+	if (state)
+		core->i2c_state |= 0x02;
+	else
+		core->i2c_state &= ~0x02;
+	cx_write(MO_I2C, core->i2c_state);
+	cx_read(MO_I2C);
+}
+
+static void cx8800_bit_setsda(void *data, int state)
+{
+	struct cx88_core *core = data;
+
+	if (state)
+		core->i2c_state |= 0x01;
+	else
+		core->i2c_state &= ~0x01;
+	cx_write(MO_I2C, core->i2c_state);
+	cx_read(MO_I2C);
+}
+
+static int cx8800_bit_getscl(void *data)
+{
+	struct cx88_core *core = data;
+	u32 state;
+
+	state = cx_read(MO_I2C);
+	return state & 0x02 ? 1 : 0;
+}
+
+static int cx8800_bit_getsda(void *data)
+{
+	struct cx88_core *core = data;
+	u32 state;
+
+	state = cx_read(MO_I2C);
+	return state & 0x01;
+}
+
+/* ----------------------------------------------------------------------- */
+
+static const struct i2c_algo_bit_data cx8800_i2c_algo_template = {
+	.setsda  = cx8800_bit_setsda,
+	.setscl  = cx8800_bit_setscl,
+	.getsda  = cx8800_bit_getsda,
+	.getscl  = cx8800_bit_getscl,
+	.udelay  = 16,
+	.timeout = 200,
+};
+
+/* ----------------------------------------------------------------------- */
+
+static const char * const i2c_devs[128] = {
+	[0x1c >> 1] = "lgdt330x",
+	[0x86 >> 1] = "tda9887/cx22702",
+	[0xa0 >> 1] = "eeprom",
+	[0xc0 >> 1] = "tuner (analog)",
+	[0xc2 >> 1] = "tuner (analog/dvb)",
+	[0xc8 >> 1] = "xc5000",
+};
+
+static void do_i2c_scan(const char *name, struct i2c_client *c)
+{
+	unsigned char buf;
+	int i, rc;
+
+	for (i = 0; i < ARRAY_SIZE(i2c_devs); i++) {
+		c->addr = i;
+		rc = i2c_master_recv(c, &buf, 0);
+		if (rc < 0)
+			continue;
+		pr_info("i2c scan: found device @ 0x%x  [%s]\n",
+			i << 1, i2c_devs[i] ? i2c_devs[i] : "???");
+	}
+}
+
+/* init + register i2c adapter */
+int cx88_i2c_init(struct cx88_core *core, struct pci_dev *pci)
+{
+	/* Prevents usage of invalid delay values */
+	if (i2c_udelay < 5)
+		i2c_udelay = 5;
+
+	core->i2c_algo = cx8800_i2c_algo_template;
+
+	core->i2c_adap.dev.parent = &pci->dev;
+	strscpy(core->i2c_adap.name, core->name, sizeof(core->i2c_adap.name));
+	core->i2c_adap.owner = THIS_MODULE;
+	core->i2c_algo.udelay = i2c_udelay;
+	core->i2c_algo.data = core;
+	i2c_set_adapdata(&core->i2c_adap, &core->v4l2_dev);
+	core->i2c_adap.algo_data = &core->i2c_algo;
+	core->i2c_client.adapter = &core->i2c_adap;
+	strscpy(core->i2c_client.name, "cx88xx internal", I2C_NAME_SIZE);
+
+	cx8800_bit_setscl(core, 1);
+	cx8800_bit_setsda(core, 1);
+
+	core->i2c_rc = i2c_bit_add_bus(&core->i2c_adap);
+	if (core->i2c_rc == 0) {
+		static u8 tuner_data[] = {
+			0x0b, 0xdc, 0x86, 0x52 };
+		static struct i2c_msg tuner_msg = {
+			.flags = 0,
+			.addr = 0xc2 >> 1,
+			.buf = tuner_data,
+			.len = 4
+		};
+
+		dprintk(1, "i2c register ok\n");
+		switch (core->boardnr) {
+		case CX88_BOARD_HAUPPAUGE_HVR1300:
+		case CX88_BOARD_HAUPPAUGE_HVR3000:
+		case CX88_BOARD_HAUPPAUGE_HVR4000:
+			pr_info("i2c init: enabling analog demod on HVR1300/3000/4000 tuner\n");
+			i2c_transfer(core->i2c_client.adapter, &tuner_msg, 1);
+			break;
+		default:
+			break;
+		}
+		if (i2c_scan)
+			do_i2c_scan(core->name, &core->i2c_client);
+	} else
+		pr_err("i2c register FAILED\n");
+
+	return core->i2c_rc;
+}