diff options
Diffstat (limited to 'drivers/media/video/m52790.c')
| -rw-r--r-- | drivers/media/video/m52790.c | 216 |
1 files changed, 0 insertions, 216 deletions
diff --git a/drivers/media/video/m52790.c b/drivers/media/video/m52790.c deleted file mode 100644 index 0991576f4c82..000000000000 --- a/drivers/media/video/m52790.c +++ /dev/null @@ -1,216 +0,0 @@ -/* - * m52790 i2c ivtv driver. - * Copyright (C) 2007 Hans Verkuil - * - * A/V source switching Mitsubishi M52790SP/FP - * - * 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; either version 2 of the License, or - * (at your option) any later version. - * - * 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. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - - -#include <linux/module.h> -#include <linux/types.h> -#include <linux/slab.h> -#include <linux/ioctl.h> -#include <asm/uaccess.h> -#include <linux/i2c.h> -#include <linux/videodev2.h> -#include <media/m52790.h> -#include <media/v4l2-device.h> -#include <media/v4l2-chip-ident.h> - -MODULE_DESCRIPTION("i2c device driver for m52790 A/V switch"); -MODULE_AUTHOR("Hans Verkuil"); -MODULE_LICENSE("GPL"); - - -struct m52790_state { - struct v4l2_subdev sd; - u16 input; - u16 output; -}; - -static inline struct m52790_state *to_state(struct v4l2_subdev *sd) -{ - return container_of(sd, struct m52790_state, sd); -} - -/* ----------------------------------------------------------------------- */ - -static int m52790_write(struct v4l2_subdev *sd) -{ - struct m52790_state *state = to_state(sd); - struct i2c_client *client = v4l2_get_subdevdata(sd); - - u8 sw1 = (state->input | state->output) & 0xff; - u8 sw2 = (state->input | state->output) >> 8; - - return i2c_smbus_write_byte_data(client, sw1, sw2); -} - -/* Note: audio and video are linked and cannot be switched separately. - So audio and video routing commands are identical for this chip. - In theory the video amplifier and audio modes could be handled - separately for the output, but that seems to be overkill right now. - The same holds for implementing an audio mute control, this is now - part of the audio output routing. The normal case is that another - chip takes care of the actual muting so making it part of the - output routing seems to be the right thing to do for now. */ -static int m52790_s_routing(struct v4l2_subdev *sd, - u32 input, u32 output, u32 config) -{ - struct m52790_state *state = to_state(sd); - - state->input = input; - state->output = output; - m52790_write(sd); - return 0; -} - -#ifdef CONFIG_VIDEO_ADV_DEBUG -static int m52790_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg) -{ - struct m52790_state *state = to_state(sd); - struct i2c_client *client = v4l2_get_subdevdata(sd); - - if (!v4l2_chip_match_i2c_client(client, ®->match)) - return -EINVAL; - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - if (reg->reg != 0) - return -EINVAL; - reg->size = 1; - reg->val = state->input | state->output; - return 0; -} - -static int m52790_s_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg) -{ - struct m52790_state *state = to_state(sd); - struct i2c_client *client = v4l2_get_subdevdata(sd); - - if (!v4l2_chip_match_i2c_client(client, ®->match)) - return -EINVAL; - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - if (reg->reg != 0) - return -EINVAL; - state->input = reg->val & 0x0303; - state->output = reg->val & ~0x0303; - m52790_write(sd); - return 0; -} -#endif - -static int m52790_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - - return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_M52790, 0); -} - -static int m52790_log_status(struct v4l2_subdev *sd) -{ - struct m52790_state *state = to_state(sd); - - v4l2_info(sd, "Switch 1: %02x\n", - (state->input | state->output) & 0xff); - v4l2_info(sd, "Switch 2: %02x\n", - (state->input | state->output) >> 8); - return 0; -} - -/* ----------------------------------------------------------------------- */ - -static const struct v4l2_subdev_core_ops m52790_core_ops = { - .log_status = m52790_log_status, - .g_chip_ident = m52790_g_chip_ident, -#ifdef CONFIG_VIDEO_ADV_DEBUG - .g_register = m52790_g_register, - .s_register = m52790_s_register, -#endif -}; - -static const struct v4l2_subdev_audio_ops m52790_audio_ops = { - .s_routing = m52790_s_routing, -}; - -static const struct v4l2_subdev_video_ops m52790_video_ops = { - .s_routing = m52790_s_routing, -}; - -static const struct v4l2_subdev_ops m52790_ops = { - .core = &m52790_core_ops, - .audio = &m52790_audio_ops, - .video = &m52790_video_ops, -}; - -/* ----------------------------------------------------------------------- */ - -/* i2c implementation */ - -static int m52790_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - struct m52790_state *state; - struct v4l2_subdev *sd; - - /* Check if the adapter supports the needed features */ - if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) - return -EIO; - - v4l_info(client, "chip found @ 0x%x (%s)\n", - client->addr << 1, client->adapter->name); - - state = kzalloc(sizeof(struct m52790_state), GFP_KERNEL); - if (state == NULL) - return -ENOMEM; - - sd = &state->sd; - v4l2_i2c_subdev_init(sd, client, &m52790_ops); - state->input = M52790_IN_TUNER; - state->output = M52790_OUT_STEREO; - m52790_write(sd); - return 0; -} - -static int m52790_remove(struct i2c_client *client) -{ - struct v4l2_subdev *sd = i2c_get_clientdata(client); - - v4l2_device_unregister_subdev(sd); - kfree(to_state(sd)); - return 0; -} - -/* ----------------------------------------------------------------------- */ - -static const struct i2c_device_id m52790_id[] = { - { "m52790", 0 }, - { } -}; -MODULE_DEVICE_TABLE(i2c, m52790_id); - -static struct i2c_driver m52790_driver = { - .driver = { - .owner = THIS_MODULE, - .name = "m52790", - }, - .probe = m52790_probe, - .remove = m52790_remove, - .id_table = m52790_id, -}; - -module_i2c_driver(m52790_driver); |