diff options
| -rw-r--r-- | drivers/media/video/Kconfig | 9 | ||||
| -rw-r--r-- | drivers/media/video/Makefile | 1 | ||||
| -rw-r--r-- | drivers/media/video/m52790.c | 172 | ||||
| -rw-r--r-- | include/media/m52790.h | 93 | ||||
| -rw-r--r-- | include/media/v4l2-chip-ident.h | 3 |
5 files changed, 278 insertions, 0 deletions
diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig index ea5be3711a7d..320f9e06a933 100644 --- a/drivers/media/video/Kconfig +++ b/drivers/media/video/Kconfig @@ -119,6 +119,15 @@ config VIDEO_CS53L32A To compile this driver as a module, choose M here: the module will be called cs53l32a. +config VIDEO_M52790 + tristate "Mitsubishi M52790 A/V switch" + depends on VIDEO_V4L2 && I2C && EXPERIMENTAL + ---help--- + Support for the Mitsubishi M52790 A/V switch. + + To compile this driver as a module, choose M here: the + module will be called m52790. + config VIDEO_TLV320AIC23B tristate "Texas Instruments TLV320AIC23B audio codec" depends on VIDEO_V4L2 && I2C && EXPERIMENTAL diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile index 8a2781821232..d8910d87acaa 100644 --- a/drivers/media/video/Makefile +++ b/drivers/media/video/Makefile @@ -67,6 +67,7 @@ obj-$(CONFIG_VIDEO_TVP5150) += tvp5150.o obj-$(CONFIG_VIDEO_PVRUSB2) += pvrusb2/ obj-$(CONFIG_VIDEO_MSP3400) += msp3400.o obj-$(CONFIG_VIDEO_CS53L32A) += cs53l32a.o +obj-$(CONFIG_VIDEO_M52790) += m52790.o obj-$(CONFIG_VIDEO_TLV320AIC23B) += tlv320aic23b.o obj-$(CONFIG_VIDEO_WM8775) += wm8775.o obj-$(CONFIG_VIDEO_WM8739) += wm8739.o diff --git a/drivers/media/video/m52790.c b/drivers/media/video/m52790.c new file mode 100644 index 000000000000..51ecbfbc1ae7 --- /dev/null +++ b/drivers/media/video/m52790.c @@ -0,0 +1,172 @@ +/* + * 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/ioctl.h> +#include <asm/uaccess.h> +#include <linux/i2c.h> +#include <linux/i2c-id.h> +#include <linux/videodev.h> +#include <media/m52790.h> +#include <media/v4l2-common.h> +#include <media/v4l2-chip-ident.h> +#include <media/v4l2-i2c-drv-legacy.h> + +MODULE_DESCRIPTION("i2c device driver for m52790 A/V switch"); +MODULE_AUTHOR("Hans Verkuil"); +MODULE_LICENSE("GPL"); + +static unsigned short normal_i2c[] = { 0x90 >> 1, I2C_CLIENT_END }; + + +I2C_CLIENT_INSMOD; + +struct m52790_state { + u16 input; + u16 output; +}; + +/* ----------------------------------------------------------------------- */ + +static int m52790_write(struct i2c_client *client) +{ + struct m52790_state *state = i2c_get_clientdata(client); + u8 sw1 = (state->input | state->output) & 0xff; + u8 sw2 = (state->input | state->output) >> 8; + + return i2c_smbus_write_byte_data(client, sw1, sw2); +} + +static int m52790_command(struct i2c_client *client, unsigned int cmd, + void *arg) +{ + struct m52790_state *state = i2c_get_clientdata(client); + struct v4l2_routing *route = arg; + + /* 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. */ + switch (cmd) { + case VIDIOC_INT_G_AUDIO_ROUTING: + case VIDIOC_INT_G_VIDEO_ROUTING: + route->input = state->input; + route->output = state->output; + break; + + case VIDIOC_INT_S_AUDIO_ROUTING: + case VIDIOC_INT_S_VIDEO_ROUTING: + state->input = route->input; + state->output = route->output; + m52790_write(client); + break; + +#ifdef CONFIG_VIDEO_ADV_DEBUG + case VIDIOC_DBG_G_REGISTER: + case VIDIOC_DBG_S_REGISTER: + { + struct v4l2_register *reg = arg; + + if (!v4l2_chip_match_i2c_client(client, + reg->match_type, reg->match_chip)) + return -EINVAL; + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + if (reg->reg != 0) + return -EINVAL; + if (cmd == VIDIOC_DBG_G_REGISTER) + reg->val = state->input | state->output; + else { + state->input = reg->val & 0x0303; + state->output = reg->val & ~0x0303; + m52790_write(client); + } + break; + } +#endif + + case VIDIOC_G_CHIP_IDENT: + return v4l2_chip_ident_i2c_client(client, arg, + V4L2_IDENT_M52790, 0); + + case VIDIOC_LOG_STATUS: + v4l_info(client, "Switch 1: %02x\n", + (state->input | state->output) & 0xff); + v4l_info(client, "Switch 2: %02x\n", + (state->input | state->output) >> 8); + break; + + default: + return -EINVAL; + } + return 0; +} + +/* ----------------------------------------------------------------------- */ + +/* i2c implementation */ + +static int m52790_probe(struct i2c_client *client) +{ + struct m52790_state *state; + + /* Check if the adapter supports the needed features */ + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) + return -EIO; + + snprintf(client->name, sizeof(client->name) - 1, "m52790"); + + v4l_info(client, "chip found @ 0x%x (%s)\n", + client->addr << 1, client->adapter->name); + + state = kmalloc(sizeof(struct m52790_state), GFP_KERNEL); + if (state == NULL) + return -ENOMEM; + + state->input = M52790_IN_TUNER; + state->output = M52790_OUT_STEREO; + i2c_set_clientdata(client, state); + m52790_write(client); + return 0; +} + +static int m52790_remove(struct i2c_client *client) +{ + kfree(i2c_get_clientdata(client)); + return 0; +} + +/* ----------------------------------------------------------------------- */ + +static struct v4l2_i2c_driver_data v4l2_i2c_data = { + .name = "m52790", + .driverid = I2C_DRIVERID_M52790, + .command = m52790_command, + .probe = m52790_probe, + .remove = m52790_remove, +}; + diff --git a/include/media/m52790.h b/include/media/m52790.h new file mode 100644 index 000000000000..7ddffae31a67 --- /dev/null +++ b/include/media/m52790.h @@ -0,0 +1,93 @@ +/* + m52790.h - definition for m52790 inputs and outputs + + Copyright (C) 2007 Hans Verkuil (hverkuil@xs4all.nl) + + 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. +*/ + +#ifndef _M52790_H_ +#define _M52790_H_ + +/* Input routing switch 1 */ + +#define M52790_SW1_IN_MASK 0x0003 +#define M52790_SW1_IN_TUNER 0x0000 +#define M52790_SW1_IN_V2 0x0001 +#define M52790_SW1_IN_V3 0x0002 +#define M52790_SW1_IN_V4 0x0003 + +/* Selects component input instead of composite */ +#define M52790_SW1_YCMIX 0x0004 + + +/* Input routing switch 2 */ + +#define M52790_SW2_IN_MASK 0x0300 +#define M52790_SW2_IN_TUNER 0x0000 +#define M52790_SW2_IN_V2 0x0100 +#define M52790_SW2_IN_V3 0x0200 +#define M52790_SW2_IN_V4 0x0300 + +/* Selects component input instead of composite */ +#define M52790_SW2_YCMIX 0x0400 + + +/* Output routing switch 1 */ + +/* Enable 6dB amplifier for composite out */ +#define M52790_SW1_V_AMP 0x0008 + +/* Enable 6dB amplifier for component out */ +#define M52790_SW1_YC_AMP 0x0010 + +/* Audio output mode */ +#define M52790_SW1_AUDIO_MASK 0x00c0 +#define M52790_SW1_AUDIO_MUTE 0x0000 +#define M52790_SW1_AUDIO_R 0x0040 +#define M52790_SW1_AUDIO_L 0x0080 +#define M52790_SW1_AUDIO_STEREO 0x00c0 + + +/* Output routing switch 2 */ + +/* Enable 6dB amplifier for composite out */ +#define M52790_SW2_V_AMP 0x0800 + +/* Enable 6dB amplifier for component out */ +#define M52790_SW2_YC_AMP 0x1000 + +/* Audio output mode */ +#define M52790_SW2_AUDIO_MASK 0xc000 +#define M52790_SW2_AUDIO_MUTE 0x0000 +#define M52790_SW2_AUDIO_R 0x4000 +#define M52790_SW2_AUDIO_L 0x8000 +#define M52790_SW2_AUDIO_STEREO 0xc000 + + +/* Common values */ +#define M52790_IN_TUNER (M52790_SW1_IN_TUNER | M52790_SW2_IN_TUNER) +#define M52790_IN_V2 (M52790_SW1_IN_V2 | M52790_SW2_IN_V2) +#define M52790_IN_V3 (M52790_SW1_IN_V3 | M52790_SW2_IN_V3) +#define M52790_IN_V4 (M52790_SW1_IN_V4 | M52790_SW2_IN_V4) + +#define M52790_OUT_STEREO (M52790_SW1_AUDIO_STEREO | \ + M52790_SW2_AUDIO_STEREO) +#define M52790_OUT_AMP_STEREO (M52790_SW1_AUDIO_STEREO | \ + M52790_SW1_V_AMP | \ + M52790_SW2_AUDIO_STEREO | \ + M52790_SW2_V_AMP) + +#endif diff --git a/include/media/v4l2-chip-ident.h b/include/media/v4l2-chip-ident.h index 8ae42c41dd08..2442c281e4fe 100644 --- a/include/media/v4l2-chip-ident.h +++ b/include/media/v4l2-chip-ident.h @@ -83,6 +83,9 @@ enum { /* module upd64083: just ident 64083 */ V4L2_IDENT_UPD64083 = 64083, + /* module m52790: just ident 52790 */ + V4L2_IDENT_M52790 = 52790, + /* module msp34xx: reserved range 34000-34999 */ V4L2_IDENT_MSP3400B = 34002, V4L2_IDENT_MSP3410B = 34102, |