diff options
Diffstat (limited to 'drivers/media/video/hdpvr/hdpvr-i2c.c')
| -rw-r--r-- | drivers/media/video/hdpvr/hdpvr-i2c.c | 231 |
1 files changed, 0 insertions, 231 deletions
diff --git a/drivers/media/video/hdpvr/hdpvr-i2c.c b/drivers/media/video/hdpvr/hdpvr-i2c.c deleted file mode 100644 index 82e819fa91c..00000000000 --- a/drivers/media/video/hdpvr/hdpvr-i2c.c +++ /dev/null @@ -1,231 +0,0 @@ - -/* - * Hauppauge HD PVR USB driver - * - * Copyright (C) 2008 Janne Grunau (j@jannau.net) - * - * IR device registration code is - * Copyright (C) 2010 Andy Walls <awalls@md.metrocast.net> - * - * 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. - * - */ - -#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) - -#include <linux/i2c.h> -#include <linux/slab.h> -#include <linux/export.h> - -#include "hdpvr.h" - -#define CTRL_READ_REQUEST 0xb8 -#define CTRL_WRITE_REQUEST 0x38 - -#define REQTYPE_I2C_READ 0xb1 -#define REQTYPE_I2C_WRITE 0xb0 -#define REQTYPE_I2C_WRITE_STATT 0xd0 - -#define Z8F0811_IR_TX_I2C_ADDR 0x70 -#define Z8F0811_IR_RX_I2C_ADDR 0x71 - - -struct i2c_client *hdpvr_register_ir_tx_i2c(struct hdpvr_device *dev) -{ - struct IR_i2c_init_data *init_data = &dev->ir_i2c_init_data; - struct i2c_board_info hdpvr_ir_tx_i2c_board_info = { - I2C_BOARD_INFO("ir_tx_z8f0811_hdpvr", Z8F0811_IR_TX_I2C_ADDR), - }; - - init_data->name = "HD-PVR"; - hdpvr_ir_tx_i2c_board_info.platform_data = init_data; - - return i2c_new_device(&dev->i2c_adapter, &hdpvr_ir_tx_i2c_board_info); -} - -struct i2c_client *hdpvr_register_ir_rx_i2c(struct hdpvr_device *dev) -{ - struct IR_i2c_init_data *init_data = &dev->ir_i2c_init_data; - struct i2c_board_info hdpvr_ir_rx_i2c_board_info = { - I2C_BOARD_INFO("ir_rx_z8f0811_hdpvr", Z8F0811_IR_RX_I2C_ADDR), - }; - - /* Our default information for ir-kbd-i2c.c to use */ - init_data->ir_codes = RC_MAP_HAUPPAUGE; - init_data->internal_get_key_func = IR_KBD_GET_KEY_HAUP_XVR; - init_data->type = RC_TYPE_RC5; - init_data->name = "HD-PVR"; - init_data->polling_interval = 405; /* ms, duplicated from Windows */ - hdpvr_ir_rx_i2c_board_info.platform_data = init_data; - - return i2c_new_device(&dev->i2c_adapter, &hdpvr_ir_rx_i2c_board_info); -} - -static int hdpvr_i2c_read(struct hdpvr_device *dev, int bus, - unsigned char addr, char *wdata, int wlen, - char *data, int len) -{ - int ret; - - if ((len > sizeof(dev->i2c_buf)) || (wlen > sizeof(dev->i2c_buf))) - return -EINVAL; - - if (wlen) { - memcpy(&dev->i2c_buf, wdata, wlen); - ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), - REQTYPE_I2C_WRITE, CTRL_WRITE_REQUEST, - (bus << 8) | addr, 0, &dev->i2c_buf, - wlen, 1000); - if (ret < 0) - return ret; - } - - ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), - REQTYPE_I2C_READ, CTRL_READ_REQUEST, - (bus << 8) | addr, 0, &dev->i2c_buf, len, 1000); - - if (ret == len) { - memcpy(data, &dev->i2c_buf, len); - ret = 0; - } else if (ret >= 0) - ret = -EIO; - - return ret; -} - -static int hdpvr_i2c_write(struct hdpvr_device *dev, int bus, - unsigned char addr, char *data, int len) -{ - int ret; - - if (len > sizeof(dev->i2c_buf)) - return -EINVAL; - - memcpy(&dev->i2c_buf, data, len); - ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), - REQTYPE_I2C_WRITE, CTRL_WRITE_REQUEST, - (bus << 8) | addr, 0, &dev->i2c_buf, len, 1000); - - if (ret < 0) - return ret; - - ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), - REQTYPE_I2C_WRITE_STATT, CTRL_READ_REQUEST, - 0, 0, &dev->i2c_buf, 2, 1000); - - if ((ret == 2) && (dev->i2c_buf[1] == (len - 1))) - ret = 0; - else if (ret >= 0) - ret = -EIO; - - return ret; -} - -static int hdpvr_transfer(struct i2c_adapter *i2c_adapter, struct i2c_msg *msgs, - int num) -{ - struct hdpvr_device *dev = i2c_get_adapdata(i2c_adapter); - int retval = 0, addr; - - if (num <= 0) - return 0; - - mutex_lock(&dev->i2c_mutex); - - addr = msgs[0].addr << 1; - - if (num == 1) { - if (msgs[0].flags & I2C_M_RD) - retval = hdpvr_i2c_read(dev, 1, addr, NULL, 0, - msgs[0].buf, msgs[0].len); - else - retval = hdpvr_i2c_write(dev, 1, addr, msgs[0].buf, - msgs[0].len); - } else if (num == 2) { - if (msgs[0].addr != msgs[1].addr) { - v4l2_warn(&dev->v4l2_dev, "refusing 2-phase i2c xfer " - "with conflicting target addresses\n"); - retval = -EINVAL; - goto out; - } - - if ((msgs[0].flags & I2C_M_RD) || !(msgs[1].flags & I2C_M_RD)) { - v4l2_warn(&dev->v4l2_dev, "refusing complex xfer with " - "r0=%d, r1=%d\n", msgs[0].flags & I2C_M_RD, - msgs[1].flags & I2C_M_RD); - retval = -EINVAL; - goto out; - } - - /* - * Write followed by atomic read is the only complex xfer that - * we actually support here. - */ - retval = hdpvr_i2c_read(dev, 1, addr, msgs[0].buf, msgs[0].len, - msgs[1].buf, msgs[1].len); - } else { - v4l2_warn(&dev->v4l2_dev, "refusing %d-phase i2c xfer\n", num); - } - -out: - mutex_unlock(&dev->i2c_mutex); - - return retval ? retval : num; -} - -static u32 hdpvr_functionality(struct i2c_adapter *adapter) -{ - return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; -} - -static struct i2c_algorithm hdpvr_algo = { - .master_xfer = hdpvr_transfer, - .functionality = hdpvr_functionality, -}; - -static struct i2c_adapter hdpvr_i2c_adapter_template = { - .name = "Hauppage HD PVR I2C", - .owner = THIS_MODULE, - .algo = &hdpvr_algo, -}; - -static int hdpvr_activate_ir(struct hdpvr_device *dev) -{ - char buffer[2]; - - mutex_lock(&dev->i2c_mutex); - - hdpvr_i2c_read(dev, 0, 0x54, NULL, 0, buffer, 1); - - buffer[0] = 0; - buffer[1] = 0x8; - hdpvr_i2c_write(dev, 1, 0x54, buffer, 2); - - buffer[1] = 0x18; - hdpvr_i2c_write(dev, 1, 0x54, buffer, 2); - - mutex_unlock(&dev->i2c_mutex); - - return 0; -} - -int hdpvr_register_i2c_adapter(struct hdpvr_device *dev) -{ - int retval = -ENOMEM; - - hdpvr_activate_ir(dev); - - memcpy(&dev->i2c_adapter, &hdpvr_i2c_adapter_template, - sizeof(struct i2c_adapter)); - dev->i2c_adapter.dev.parent = &dev->udev->dev; - - i2c_set_adapdata(&dev->i2c_adapter, dev); - - retval = i2c_add_adapter(&dev->i2c_adapter); - - return retval; -} - -#endif |