To compile this driver as a module, choose M here: the
module will be called cx231xx
+config VIDEO_CX231XX_RC
+ bool "Conexant cx231xx Remote Controller additional support"
+ depends on VIDEO_IR
+ depends on VIDEO_CX231XX
+ default y
+ ---help---
+ cx231xx hardware has a builtin RX/TX support. However, a few
+ designs opted to not use it, but, instead, some other hardware.
+ This module enables the usage of those other hardware, like the
+ ones used with ISDB-T boards.
+
+ On most cases, all you need for IR is mceusb module.
+
config VIDEO_CX231XX_ALSA
tristate "Conexant Cx231xx ALSA audio module"
depends on VIDEO_CX231XX && SND
--- /dev/null
+/*
+ * cx231xx IR glue driver
+ *
+ * Copyright (C) 2010 Mauro Carvalho Chehab <mchehab@redhat.com>
+ *
+ * Polaris (cx231xx) has its support for IR's with a design close to MCE.
+ * however, a few designs are using an external I2C chip for IR, instead
+ * of using the one provided by the chip.
+ * This driver provides support for those extra devices
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include "cx231xx.h"
+#include <linux/usb.h>
+#include <linux/slab.h>
+
+#define MODULE_NAME "cx231xx-input"
+
+static int get_key_isdbt(struct IR_i2c *ir, u32 *ir_key,
+ u32 *ir_raw)
+{
+ u8 cmd;
+
+ /* poll IR chip */
+ if (1 != i2c_master_recv(ir->c, &cmd, 1))
+ return -EIO;
+
+ /* it seems that 0xFE indicates that a button is still hold
+ down, while 0xff indicates that no button is hold
+ down. 0xfe sequences are sometimes interrupted by 0xFF */
+
+ if (cmd == 0xff)
+ return 0;
+
+ dev_dbg(&ir->input->dev, "scancode = %02x\n", cmd);
+
+ *ir_key = cmd;
+ *ir_raw = cmd;
+ return 1;
+}
+
+int cx231xx_ir_init(struct cx231xx *dev)
+{
+ struct input_dev *input_dev;
+ struct i2c_board_info info;
+ int rc;
+ u8 ir_i2c_bus;
+
+ dev_dbg(&dev->udev->dev, "%s\n", __func__);
+
+ /* Only initialize if a rc keycode map is defined */
+ if (!cx231xx_boards[dev->model].rc_map)
+ return -ENODEV;
+
+ input_dev = input_allocate_device();
+ if (!input_dev)
+ return -ENOMEM;
+
+ request_module("ir-kbd-i2c");
+
+ memset(&info, 0, sizeof(struct i2c_board_info));
+ memset(&dev->ir.init_data, 0, sizeof(dev->ir.init_data));
+
+ dev->ir.input_dev = input_dev;
+ dev->ir.init_data.name = cx231xx_boards[dev->model].name;
+ dev->ir.props.priv = dev;
+ dev->ir.props.allowed_protos = IR_TYPE_NEC;
+ snprintf(dev->ir.name, sizeof(dev->ir.name),
+ "cx231xx IR (%s)", cx231xx_boards[dev->model].name);
+ usb_make_path(dev->udev, dev->ir.phys, sizeof(dev->ir.phys));
+ strlcat(dev->ir.phys, "/input0", sizeof(dev->ir.phys));
+
+ strlcpy(info.type, "ir_video", I2C_NAME_SIZE);
+ info.platform_data = &dev->ir.init_data;
+
+ input_dev->name = dev->ir.name;
+ input_dev->phys = dev->ir.phys;
+ input_dev->dev.parent = &dev->udev->dev;
+ input_dev->id.bustype = BUS_USB;
+ input_dev->id.version = 1;
+ input_dev->id.vendor = le16_to_cpu(dev->udev->descriptor.idVendor);
+ input_dev->id.product = le16_to_cpu(dev->udev->descriptor.idProduct);
+
+ /*
+ * Board-dependent values
+ *
+ * For now, there's just one type of hardware design using
+ * an i2c device.
+ */
+ dev->ir.init_data.get_key = get_key_isdbt;
+ dev->ir.init_data.ir_codes = cx231xx_boards[dev->model].rc_map;
+ /* The i2c micro-controller only outputs the cmd part of NEC protocol */
+ dev->ir.props.scanmask = 0xff;
+ info.addr = 0x30;
+
+ rc = ir_input_register(input_dev, cx231xx_boards[dev->model].rc_map,
+ &dev->ir.props, MODULE_NAME);
+ if (rc < 0)
+ return rc;
+
+ /* Load and bind ir-kbd-i2c */
+ ir_i2c_bus = cx231xx_boards[dev->model].ir_i2c_master;
+ i2c_new_device(&dev->i2c_bus[ir_i2c_bus].i2c_adap, &info);
+
+ return rc;
+}
+
+void cx231xx_ir_exit(struct cx231xx *dev)
+{
+ if (dev->ir.input_dev) {
+ ir_input_unregister(dev->ir.input_dev);
+ dev->ir.input_dev = NULL;
+ }
+}
#include <media/videobuf-vmalloc.h>
#include <media/v4l2-device.h>
#include <media/ir-core.h>
+#include <media/ir-kbd-i2c.h>
#include <media/videobuf-dvb.h>
#include "cx231xx-reg.h"
/* i2c masters */
u8 tuner_i2c_master;
u8 demod_i2c_master;
+ u8 ir_i2c_master;
+
+ /* for devices with I2C chips for IR */
+ char *rc_map;
unsigned int max_range_640_480:1;
unsigned int has_dvb:1;
void *port_priv;
};
+struct cx231xx_ir_t {
+ struct input_dev *input_dev;
+ char name[40];
+ char phys[32];
+
+ struct ir_dev_props props;
+
+ /* I2C keyboard data */
+ struct IR_i2c_init_data init_data;
+};
+
/* main device struct */
struct cx231xx {
/* generic device properties */
struct cx231xx_board board;
+ /* For I2C IR support */
+ struct cx231xx_ir_t ir;
+
unsigned int stream_on:1; /* Locks streams */
unsigned int vbi_stream_on:1; /* Locks streams for VBI */
unsigned int has_audio_class:1;
struct v4l2_subdev *sd_cx25840;
struct v4l2_subdev *sd_tuner;
- struct cx231xx_IR *ir;
-
struct work_struct wq_trigger; /* Trigger to start/stop audio for alsa module */
atomic_t stream_started; /* stream should be running if true */
extern int cx231xx_417_register(struct cx231xx *dev);
extern void cx231xx_417_unregister(struct cx231xx *dev);
+/* cx23885-input.c */
+
+#if defined(CONFIG_VIDEO_CX231XX_RC)
+int cx231xx_ir_init(struct cx231xx *dev);
+void cx231xx_ir_exit(struct cx231xx *dev);
+#else
+#define cx231xx_ir_init(dev) (0)
+#define cx231xx_ir_exit(dev) (0)
+#endif
+
+
/* printk macros */
#define cx231xx_err(fmt, arg...) do {\
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