V4L/DVB (6869): cs5345: new i2c driver (6fb377f8) · Commits · e / devices / android_kernel_fairphone_FP4

drivers/media/video/Kconfig

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		@@ -109,6 +109,16 @@ config VIDEO_MSP3400
		To compile this driver as a module, choose M here: the
		module will be called msp3400.

		config VIDEO_CS5345
		tristate "Cirrus Logic CS5345 audio ADC"
		depends on VIDEO_V4L2 && I2C && EXPERIMENTAL
		---help---
		Support for the Cirrus Logic CS5345 24-bit, 192 kHz
		stereo A/D converter.

		To compile this driver as a module, choose M here: the
		module will be called cs5345.

		config VIDEO_CS53L32A
		tristate "Cirrus Logic CS53L32A audio ADC"
		depends on VIDEO_V4L2 && I2C

drivers/media/video/Makefile

+1 −0

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		@@ -66,6 +66,7 @@ obj-$(CONFIG_VIDEO_USBVISION) += usbvision/
		obj-$(CONFIG_VIDEO_TVP5150) += tvp5150.o
		obj-$(CONFIG_VIDEO_PVRUSB2) += pvrusb2/
		obj-$(CONFIG_VIDEO_MSP3400) += msp3400.o
		obj-$(CONFIG_VIDEO_CS5345) += cs5345.o
		obj-$(CONFIG_VIDEO_CS53L32A) += cs53l32a.o
		obj-$(CONFIG_VIDEO_M52790) += m52790.o
		obj-$(CONFIG_VIDEO_TLV320AIC23B) += tlv320aic23b.o

drivers/media/video/cs5345.c

0 → 100644

+168 −0

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		/*
		* cs5345 Cirrus Logic 24-bit, 192 kHz Stereo Audio ADC
		* Copyright (C) 2007 Hans Verkuil
		*
		* 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/version.h>
		#include <linux/module.h>
		#include <linux/kernel.h>
		#include <linux/i2c.h>
		#include <linux/videodev2.h>
		#include <media/v4l2-i2c-drv.h>
		#include <media/v4l2-common.h>
		#include <media/v4l2-chip-ident.h>

		MODULE_DESCRIPTION("i2c device driver for cs5345 Audio ADC");
		MODULE_AUTHOR("Hans Verkuil");
		MODULE_LICENSE("GPL");

		static int debug;

		module_param(debug, bool, 0644);

		MODULE_PARM_DESC(debug, "Debugging messages\n\t\t\t0=Off (default), 1=On");


		/* ----------------------------------------------------------------------- */

		static inline int cs5345_write(struct i2c_client *client, u8 reg, u8 value)
		{
		return i2c_smbus_write_byte_data(client, reg, value);
		}

		static inline int cs5345_read(struct i2c_client *client, u8 reg)
		{
		return i2c_smbus_read_byte_data(client, reg);
		}

		static int cs5345_command(struct i2c_client client, unsigned cmd, void arg)
		{
		struct v4l2_routing *route = arg;
		struct v4l2_control *ctrl = arg;

		switch (cmd) {
		case VIDIOC_INT_G_AUDIO_ROUTING:
		route->input = cs5345_read(client, 0x09) & 7;
		route->input \|= cs5345_read(client, 0x05) & 0x70;
		route->output = 0;
		break;

		case VIDIOC_INT_S_AUDIO_ROUTING:
		if ((route->input & 0xf) > 6) {
		v4l_err(client, "Invalid input %d.\n", route->input);
		return -EINVAL;
		}
		cs5345_write(client, 0x09, route->input & 0xf);
		cs5345_write(client, 0x05, route->input & 0xf0);
		break;

		case VIDIOC_G_CTRL:
		if (ctrl->id == V4L2_CID_AUDIO_MUTE) {
		ctrl->value = (cs5345_read(client, 0x04) & 0x08) != 0;
		break;
		}
		if (ctrl->id != V4L2_CID_AUDIO_VOLUME)
		return -EINVAL;
		ctrl->value = cs5345_read(client, 0x07) & 0x3f;
		if (ctrl->value >= 32)
		ctrl->value = ctrl->value - 64;
		break;

		case VIDIOC_S_CTRL:
		break;
		if (ctrl->id == V4L2_CID_AUDIO_MUTE) {
		cs5345_write(client, 0x04, ctrl->value ? 0x80 : 0);
		break;
		}
		if (ctrl->id != V4L2_CID_AUDIO_VOLUME)
		return -EINVAL;
		if (ctrl->value > 24 \|\| ctrl->value < -24)
		return -EINVAL;
		cs5345_write(client, 0x07, ((u8)ctrl->value) & 0x3f);
		cs5345_write(client, 0x08, ((u8)ctrl->value) & 0x3f);
		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 (cmd == VIDIOC_DBG_G_REGISTER)
		reg->val = cs5345_read(client, reg->reg & 0x1f);
		else
		cs5345_write(client, reg->reg & 0x1f, reg->val & 0x1f);
		break;
		}
		#endif

		case VIDIOC_G_CHIP_IDENT:
		return v4l2_chip_ident_i2c_client(client,
		arg, V4L2_IDENT_CS5345, 0);

		case VIDIOC_LOG_STATUS:
		{
		u8 v = cs5345_read(client, 0x09) & 7;
		u8 m = cs5345_read(client, 0x04);
		int vol = cs5345_read(client, 0x08) & 0x3f;

		v4l_info(client, "Input: %d%s\n", v,
		(m & 0x80) ? " (muted)" : "");
		if (vol >= 32)
		vol = vol - 64;
		v4l_info(client, "Volume: %d dB\n", vol);
		break;
		}

		default:
		return -EINVAL;
		}
		return 0;
		}

		/* ----------------------------------------------------------------------- */

		static int cs5345_probe(struct i2c_client *client)
		{
		/* 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);

		cs5345_write(client, 0x02, 0x00);
		cs5345_write(client, 0x04, 0x01);
		cs5345_write(client, 0x09, 0x01);
		return 0;
		}

		/* ----------------------------------------------------------------------- */

		static struct v4l2_i2c_driver_data v4l2_i2c_data = {
		.name = "cs5345",
		.driverid = I2C_DRIVERID_CS5345,
		.command = cs5345_command,
		.probe = cs5345_probe,
		};

include/media/cs5345.h

0 → 100644

+39 −0

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		/*
		cs5345.h - definition for cs5345 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 _CS5345_H_
		#define _CS5345_H_

		/* CS5345 HW inputs */
		#define CS5345_IN_MIC 0
		#define CS5345_IN_1 1
		#define CS5345_IN_2 2
		#define CS5345_IN_3 3
		#define CS5345_IN_4 4
		#define CS5345_IN_5 5
		#define CS5345_IN_6 6

		#define CS5345_MCLK_1 0x00
		#define CS5345_MCLK_1_5 0x10
		#define CS5345_MCLK_2 0x20
		#define CS5345_MCLK_3 0x30
		#define CS5345_MCLK_4 0x40

		#endif

include/media/v4l2-chip-ident.h

+3 −0

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		@@ -68,6 +68,9 @@ enum {
		/* module vp27smpx: just ident 2700 */
		V4L2_IDENT_VP27SMPX = 2700,

		/* module cs5345: just ident 5345 */
		V4L2_IDENT_CS5345 = 5345,

		/* module wm8739: just ident 8739 */
		V4L2_IDENT_WM8739 = 8739,