[deliverable/linux.git] / drivers / media / radio / saa7706h.c

/*
 * saa7706.c Philips SAA7706H Car Radio DSP driver
 * Copyright (c) 2009 Intel Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * 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/init.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>

#define DRIVER_NAME "saa7706h"

/* the I2C memory map looks like this

	$1C00 - $FFFF Not Used
	$2200 - $3FFF Reserved YRAM (DSP2) space
	$2000 - $21FF YRAM (DSP2)
	$1FF0 - $1FFF Hardware Registers
	$1280 - $1FEF Reserved XRAM (DSP2) space
	$1000 - $127F XRAM (DSP2)
	$0FFF        DSP CONTROL
	$0A00 - $0FFE Reserved
	$0980 - $09FF Reserved YRAM (DSP1) space
	$0800 - $097F YRAM (DSP1)
	$0200 - $07FF Not Used
	$0180 - $01FF Reserved XRAM (DSP1) space
	$0000 - $017F XRAM (DSP1)
*/

#define SAA7706H_REG_CTRL		0x0fff
#define SAA7706H_CTRL_BYP_PLL		0x0001
#define SAA7706H_CTRL_PLL_DIV_MASK	0x003e
#define SAA7706H_CTRL_PLL3_62975MHZ	0x003e
#define SAA7706H_CTRL_DSP_TURBO		0x0040
#define SAA7706H_CTRL_PC_RESET_DSP1	0x0080
#define SAA7706H_CTRL_PC_RESET_DSP2	0x0100
#define SAA7706H_CTRL_DSP1_ROM_EN_MASK	0x0600
#define SAA7706H_CTRL_DSP1_FUNC_PROM	0x0000
#define SAA7706H_CTRL_DSP2_ROM_EN_MASK	0x1800
#define SAA7706H_CTRL_DSP2_FUNC_PROM	0x0000
#define SAA7706H_CTRL_DIG_SIL_INTERPOL	0x8000

#define SAA7706H_REG_EVALUATION			0x1ff0
#define SAA7706H_EVAL_DISABLE_CHARGE_PUMP	0x000001
#define SAA7706H_EVAL_DCS_CLOCK			0x000002
#define SAA7706H_EVAL_GNDRC1_ENABLE		0x000004
#define SAA7706H_EVAL_GNDRC2_ENABLE		0x000008

#define SAA7706H_REG_CL_GEN1			0x1ff3
#define SAA7706H_CL_GEN1_MIN_LOOPGAIN_MASK	0x00000f
#define SAA7706H_CL_GEN1_LOOPGAIN_MASK		0x0000f0
#define SAA7706H_CL_GEN1_COARSE_RATION		0xffff00

#define SAA7706H_REG_CL_GEN2			0x1ff4
#define SAA7706H_CL_GEN2_WSEDGE_FALLING		0x000001
#define SAA7706H_CL_GEN2_STOP_VCO		0x000002
#define SAA7706H_CL_GEN2_FRERUN			0x000004
#define SAA7706H_CL_GEN2_ADAPTIVE		0x000008
#define SAA7706H_CL_GEN2_FINE_RATIO_MASK	0x0ffff0

#define SAA7706H_REG_CL_GEN4		0x1ff6
#define SAA7706H_CL_GEN4_BYPASS_PLL1	0x001000
#define SAA7706H_CL_GEN4_PLL1_DIV_MASK	0x03e000
#define SAA7706H_CL_GEN4_DSP1_TURBO	0x040000

#define SAA7706H_REG_SEL	0x1ff7
#define SAA7706H_SEL_DSP2_SRCA_MASK	0x000007
#define SAA7706H_SEL_DSP2_FMTA_MASK	0x000031
#define SAA7706H_SEL_DSP2_SRCB_MASK	0x0001c0
#define SAA7706H_SEL_DSP2_FMTB_MASK	0x000e00
#define SAA7706H_SEL_DSP1_SRC_MASK	0x003000
#define SAA7706H_SEL_DSP1_FMT_MASK	0x01c003
#define SAA7706H_SEL_SPDIF2		0x020000
#define SAA7706H_SEL_HOST_IO_FMT_MASK	0x1c0000
#define SAA7706H_SEL_EN_HOST_IO		0x200000

#define SAA7706H_REG_IAC		0x1ff8
#define SAA7706H_REG_CLK_SET		0x1ff9
#define SAA7706H_REG_CLK_COEFF		0x1ffa
#define SAA7706H_REG_INPUT_SENS		0x1ffb
#define SAA7706H_INPUT_SENS_RDS_VOL_MASK	0x0003f
#define SAA7706H_INPUT_SENS_FM_VOL_MASK		0x00fc0
#define SAA7706H_INPUT_SENS_FM_MPX		0x01000
#define SAA7706H_INPUT_SENS_OFF_FILTER_A_EN	0x02000
#define SAA7706H_INPUT_SENS_OFF_FILTER_B_EN	0x04000
#define SAA7706H_REG_PHONE_NAV_AUDIO	0x1ffc
#define SAA7706H_REG_IO_CONF_DSP2	0x1ffd
#define SAA7706H_REG_STATUS_DSP2	0x1ffe
#define SAA7706H_REG_PC_DSP2		0x1fff

#define SAA7706H_DSP1_MOD0	0x0800
#define SAA7706H_DSP1_ROM_VER	0x097f
#define SAA7706H_DSP2_MPTR0	0x1000

#define SAA7706H_DSP1_MODPNTR	0x0000

#define SAA7706H_DSP2_XMEM_CONTLLCW	0x113e
#define SAA7706H_DSP2_XMEM_BUSAMP	0x114a
#define SAA7706H_DSP2_XMEM_FDACPNTR	0x11f9
#define SAA7706H_DSP2_XMEM_IIS1PNTR	0x11fb

#define SAA7706H_DSP2_YMEM_PVGA		0x212a
#define SAA7706H_DSP2_YMEM_PVAT1	0x212b
#define SAA7706H_DSP2_YMEM_PVAT		0x212c
#define SAA7706H_DSP2_YMEM_ROM_VER	0x21ff

#define SUPPORTED_DSP1_ROM_VER		0x667

struct saa7706h_state {
	struct v4l2_subdev sd;
	struct v4l2_ctrl_handler hdl;
	unsigned muted;
};

static inline struct saa7706h_state *to_state(struct v4l2_subdev *sd)
{
	return container_of(sd, struct saa7706h_state, sd);
}

static int saa7706h_i2c_send(struct i2c_client *client, const u8 *data, int len)
{
	int err = i2c_master_send(client, data, len);
	if (err == len)
		return 0;
	return err > 0 ? -EIO : err;
}

static int saa7706h_i2c_transfer(struct i2c_client *client,
	struct i2c_msg *msgs, int num)
{
	int err = i2c_transfer(client->adapter, msgs, num);
	if (err == num)
		return 0;
	return err > 0 ? -EIO : err;
}

static int saa7706h_set_reg24(struct v4l2_subdev *sd, u16 reg, u32 val)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	u8 buf[5];
	int pos = 0;

	buf[pos++] = reg >> 8;
	buf[pos++] = reg;
	buf[pos++] = val >> 16;
	buf[pos++] = val >> 8;
	buf[pos++] = val;

	return saa7706h_i2c_send(client, buf, pos);
}

static int saa7706h_set_reg24_err(struct v4l2_subdev *sd, u16 reg, u32 val,
	int *err)
{
	return *err ? *err : saa7706h_set_reg24(sd, reg, val);
}

static int saa7706h_set_reg16(struct v4l2_subdev *sd, u16 reg, u16 val)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	u8 buf[4];
	int pos = 0;

	buf[pos++] = reg >> 8;
	buf[pos++] = reg;
	buf[pos++] = val >> 8;
	buf[pos++] = val;

	return saa7706h_i2c_send(client, buf, pos);
}

static int saa7706h_set_reg16_err(struct v4l2_subdev *sd, u16 reg, u16 val,
	int *err)
{
	return *err ? *err : saa7706h_set_reg16(sd, reg, val);
}

static int saa7706h_get_reg16(struct v4l2_subdev *sd, u16 reg)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	u8 buf[2];
	int err;
	u8 regaddr[] = {reg >> 8, reg};
	struct i2c_msg msg[] = {
					{
						.addr = client->addr,
						.len = sizeof(regaddr),
						.buf = regaddr
					},
					{
						.addr = client->addr,
						.flags = I2C_M_RD,
						.len = sizeof(buf),
						.buf = buf
					}
				};

	err = saa7706h_i2c_transfer(client, msg, ARRAY_SIZE(msg));
	if (err)
		return err;

	return buf[0] << 8 | buf[1];
}

static int saa7706h_unmute(struct v4l2_subdev *sd)
{
	struct saa7706h_state *state = to_state(sd);
	int err = 0;

	err = saa7706h_set_reg16_err(sd, SAA7706H_REG_CTRL,
		SAA7706H_CTRL_PLL3_62975MHZ | SAA7706H_CTRL_PC_RESET_DSP1 |
		SAA7706H_CTRL_PC_RESET_DSP2, &err);

	/* newer versions of the chip requires a small sleep after reset */
	msleep(1);

	err = saa7706h_set_reg16_err(sd, SAA7706H_REG_CTRL,
		SAA7706H_CTRL_PLL3_62975MHZ, &err);

	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_EVALUATION, 0, &err);

	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CL_GEN1, 0x040022, &err);

	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CL_GEN2,
		SAA7706H_CL_GEN2_WSEDGE_FALLING, &err);

	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CL_GEN4, 0x024080, &err);

	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_SEL, 0x200080, &err);

	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_IAC, 0xf4caed, &err);

	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CLK_SET, 0x124334, &err);

	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CLK_COEFF, 0x004a1a,
		&err);

	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_INPUT_SENS, 0x0071c7,
		&err);

	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_PHONE_NAV_AUDIO,
		0x0e22ff, &err);

	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_IO_CONF_DSP2, 0x001ff8,
		&err);

	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_STATUS_DSP2, 0x080003,
		&err);

	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_PC_DSP2, 0x000004, &err);

	err = saa7706h_set_reg16_err(sd, SAA7706H_DSP1_MOD0, 0x0c6c, &err);

	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_MPTR0, 0x000b4b, &err);

	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP1_MODPNTR, 0x000600, &err);

	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP1_MODPNTR, 0x0000c0, &err);

	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_CONTLLCW, 0x000819,
		&err);

	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_CONTLLCW, 0x00085a,
		&err);

	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_BUSAMP, 0x7fffff,
		&err);

	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_FDACPNTR, 0x2000cb,
		&err);

	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_IIS1PNTR, 0x2000cb,
		&err);

	err = saa7706h_set_reg16_err(sd, SAA7706H_DSP2_YMEM_PVGA, 0x0f80, &err);

	err = saa7706h_set_reg16_err(sd, SAA7706H_DSP2_YMEM_PVAT1, 0x0800,
		&err);

	err = saa7706h_set_reg16_err(sd, SAA7706H_DSP2_YMEM_PVAT, 0x0800, &err);

	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_CONTLLCW, 0x000905,
		&err);
	if (!err)
		state->muted = 0;
	return err;
}

static int saa7706h_mute(struct v4l2_subdev *sd)
{
	struct saa7706h_state *state = to_state(sd);
	int err;

	err = saa7706h_set_reg16(sd, SAA7706H_REG_CTRL,
		SAA7706H_CTRL_PLL3_62975MHZ | SAA7706H_CTRL_PC_RESET_DSP1 |
		SAA7706H_CTRL_PC_RESET_DSP2);
	if (!err)
		state->muted = 1;
	return err;
}

static int saa7706h_s_ctrl(struct v4l2_ctrl *ctrl)
{
	struct saa7706h_state *state =
		container_of(ctrl->handler, struct saa7706h_state, hdl);

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		if (ctrl->val)
			return saa7706h_mute(&state->sd);
		return saa7706h_unmute(&state->sd);
	}
	return -EINVAL;
}

static const struct v4l2_ctrl_ops saa7706h_ctrl_ops = {
	.s_ctrl = saa7706h_s_ctrl,
};

static const struct v4l2_subdev_ops empty_ops = {};

/*
 * Generic i2c probe
 * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
 */

static int saa7706h_probe(struct i2c_client *client,
			  const struct i2c_device_id *id)
{
	struct saa7706h_state *state;
	struct v4l2_subdev *sd;
	int err;

	/* 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%02x (%s)\n",
			client->addr << 1, client->adapter->name);

	state = kzalloc(sizeof(struct saa7706h_state), GFP_KERNEL);
	if (state == NULL)
		return -ENOMEM;
	sd = &state->sd;
	v4l2_i2c_subdev_init(sd, client, &empty_ops);

	v4l2_ctrl_handler_init(&state->hdl, 4);
	v4l2_ctrl_new_std(&state->hdl, &saa7706h_ctrl_ops,
			V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
	sd->ctrl_handler = &state->hdl;
	err = state->hdl.error;
	if (err)
		goto err;

	/* check the rom versions */
	err = saa7706h_get_reg16(sd, SAA7706H_DSP1_ROM_VER);
	if (err < 0)
		goto err;
	if (err != SUPPORTED_DSP1_ROM_VER)
		v4l2_warn(sd, "Unknown DSP1 ROM code version: 0x%x\n", err);
	state->muted = 1;

	/* startup in a muted state */
	err = saa7706h_mute(sd);
	if (err)
		goto err;

	return 0;

err:
	v4l2_device_unregister_subdev(sd);
	v4l2_ctrl_handler_free(&state->hdl);
	kfree(to_state(sd));

	printk(KERN_ERR DRIVER_NAME ": Failed to probe: %d\n", err);

	return err;
}

static int saa7706h_remove(struct i2c_client *client)
{
	struct v4l2_subdev *sd = i2c_get_clientdata(client);
	struct saa7706h_state *state = to_state(sd);

	saa7706h_mute(sd);
	v4l2_device_unregister_subdev(sd);
	v4l2_ctrl_handler_free(&state->hdl);
	kfree(to_state(sd));
	return 0;
}

static const struct i2c_device_id saa7706h_id[] = {
	{DRIVER_NAME, 0},
	{},
};

MODULE_DEVICE_TABLE(i2c, saa7706h_id);

static struct i2c_driver saa7706h_driver = {
	.driver = {
		.name	= DRIVER_NAME,
	},
	.probe		= saa7706h_probe,
	.remove		= saa7706h_remove,
	.id_table	= saa7706h_id,
};

module_i2c_driver(saa7706h_driver);

MODULE_DESCRIPTION("SAA7706H Car Radio DSP driver");
MODULE_AUTHOR("Mocean Laboratories");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
ee4b9dbb RR	1	/*
	2	* saa7706.c Philips SAA7706H Car Radio DSP driver
	3	* Copyright (c) 2009 Intel Corporation
	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License version 2 as
	7	* published by the Free Software Foundation.
	8	*
	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write to the Free Software
	16	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	17	*/
	18
	19	#include <linux/module.h>
	20	#include <linux/init.h>
	21	#include <linux/delay.h>
	22	#include <linux/errno.h>
	23	#include <linux/kernel.h>
	24	#include <linux/interrupt.h>
	25	#include <linux/i2c.h>
5a0e3ad6	26	#include <linux/slab.h>
ee4b9dbb	27	#include <media/v4l2-device.h>
8ff61832	28	#include <media/v4l2-ctrls.h>
ee4b9dbb RR	29
	30	#define DRIVER_NAME "saa7706h"
	31
	32	/* the I2C memory map looks like this
	33
	34	$1C00 - $FFFF Not Used
	35	$2200 - $3FFF Reserved YRAM (DSP2) space
	36	$2000 - $21FF YRAM (DSP2)
	37	$1FF0 - $1FFF Hardware Registers
	38	$1280 - $1FEF Reserved XRAM (DSP2) space
	39	$1000 - $127F XRAM (DSP2)
	40	$0FFF DSP CONTROL
	41	$0A00 - $0FFE Reserved
	42	$0980 - $09FF Reserved YRAM (DSP1) space
	43	$0800 - $097F YRAM (DSP1)
	44	$0200 - $07FF Not Used
	45	$0180 - $01FF Reserved XRAM (DSP1) space
	46	$0000 - $017F XRAM (DSP1)
	47	*/
	48
	49	#define SAA7706H_REG_CTRL 0x0fff
	50	#define SAA7706H_CTRL_BYP_PLL 0x0001
	51	#define SAA7706H_CTRL_PLL_DIV_MASK 0x003e
	52	#define SAA7706H_CTRL_PLL3_62975MHZ 0x003e
	53	#define SAA7706H_CTRL_DSP_TURBO 0x0040
	54	#define SAA7706H_CTRL_PC_RESET_DSP1 0x0080
	55	#define SAA7706H_CTRL_PC_RESET_DSP2 0x0100
	56	#define SAA7706H_CTRL_DSP1_ROM_EN_MASK 0x0600
	57	#define SAA7706H_CTRL_DSP1_FUNC_PROM 0x0000
	58	#define SAA7706H_CTRL_DSP2_ROM_EN_MASK 0x1800
	59	#define SAA7706H_CTRL_DSP2_FUNC_PROM 0x0000
	60	#define SAA7706H_CTRL_DIG_SIL_INTERPOL 0x8000
	61
	62	#define SAA7706H_REG_EVALUATION 0x1ff0
	63	#define SAA7706H_EVAL_DISABLE_CHARGE_PUMP 0x000001
	64	#define SAA7706H_EVAL_DCS_CLOCK 0x000002
	65	#define SAA7706H_EVAL_GNDRC1_ENABLE 0x000004
	66	#define SAA7706H_EVAL_GNDRC2_ENABLE 0x000008
	67
	68	#define SAA7706H_REG_CL_GEN1 0x1ff3
	69	#define SAA7706H_CL_GEN1_MIN_LOOPGAIN_MASK 0x00000f
	70	#define SAA7706H_CL_GEN1_LOOPGAIN_MASK 0x0000f0
	71	#define SAA7706H_CL_GEN1_COARSE_RATION 0xffff00
	72
	73	#define SAA7706H_REG_CL_GEN2 0x1ff4
	74	#define SAA7706H_CL_GEN2_WSEDGE_FALLING 0x000001
	75	#define SAA7706H_CL_GEN2_STOP_VCO 0x000002
	76	#define SAA7706H_CL_GEN2_FRERUN 0x000004
	77	#define SAA7706H_CL_GEN2_ADAPTIVE 0x000008
	78	#define SAA7706H_CL_GEN2_FINE_RATIO_MASK 0x0ffff0
	79
	80	#define SAA7706H_REG_CL_GEN4 0x1ff6
	81	#define SAA7706H_CL_GEN4_BYPASS_PLL1 0x001000
	82	#define SAA7706H_CL_GEN4_PLL1_DIV_MASK 0x03e000
	83	#define SAA7706H_CL_GEN4_DSP1_TURBO 0x040000
	84
	85	#define SAA7706H_REG_SEL 0x1ff7
	86	#define SAA7706H_SEL_DSP2_SRCA_MASK 0x000007
	87	#define SAA7706H_SEL_DSP2_FMTA_MASK 0x000031
	88	#define SAA7706H_SEL_DSP2_SRCB_MASK 0x0001c0
	89	#define SAA7706H_SEL_DSP2_FMTB_MASK 0x000e00
	90	#define SAA7706H_SEL_DSP1_SRC_MASK 0x003000
	91	#define SAA7706H_SEL_DSP1_FMT_MASK 0x01c003
	92	#define SAA7706H_SEL_SPDIF2 0x020000
93	#define SAA7706H_SEL_HOST_IO_FMT_MASK 0x1c0000
94	#define SAA7706H_SEL_EN_HOST_IO 0x200000
95
96	#define SAA7706H_REG_IAC 0x1ff8
97	#define SAA7706H_REG_CLK_SET 0x1ff9
98	#define SAA7706H_REG_CLK_COEFF 0x1ffa
99	#define SAA7706H_REG_INPUT_SENS 0x1ffb
100	#define SAA7706H_INPUT_SENS_RDS_VOL_MASK 0x0003f
101	#define SAA7706H_INPUT_SENS_FM_VOL_MASK 0x00fc0
102	#define SAA7706H_INPUT_SENS_FM_MPX 0x01000
103	#define SAA7706H_INPUT_SENS_OFF_FILTER_A_EN 0x02000
104	#define SAA7706H_INPUT_SENS_OFF_FILTER_B_EN 0x04000
105	#define SAA7706H_REG_PHONE_NAV_AUDIO 0x1ffc
106	#define SAA7706H_REG_IO_CONF_DSP2 0x1ffd
107	#define SAA7706H_REG_STATUS_DSP2 0x1ffe
108	#define SAA7706H_REG_PC_DSP2 0x1fff
109
110	#define SAA7706H_DSP1_MOD0 0x0800
111	#define SAA7706H_DSP1_ROM_VER 0x097f
112	#define SAA7706H_DSP2_MPTR0 0x1000
113
114	#define SAA7706H_DSP1_MODPNTR 0x0000
115
116	#define SAA7706H_DSP2_XMEM_CONTLLCW 0x113e
117	#define SAA7706H_DSP2_XMEM_BUSAMP 0x114a
118	#define SAA7706H_DSP2_XMEM_FDACPNTR 0x11f9
119	#define SAA7706H_DSP2_XMEM_IIS1PNTR 0x11fb
120
121	#define SAA7706H_DSP2_YMEM_PVGA 0x212a
122	#define SAA7706H_DSP2_YMEM_PVAT1 0x212b
123	#define SAA7706H_DSP2_YMEM_PVAT 0x212c
124	#define SAA7706H_DSP2_YMEM_ROM_VER 0x21ff
125
126	#define SUPPORTED_DSP1_ROM_VER 0x667
127
128	struct saa7706h_state {
129	struct v4l2_subdev sd;
8ff61832	130	struct v4l2_ctrl_handler hdl;
ee4b9dbb RR	131	unsigned muted;
	132	};
	133
	134	static inline struct saa7706h_state to_state(struct v4l2_subdev sd)
	135	{
	136	return container_of(sd, struct saa7706h_state, sd);
	137	}
	138
	139	static int saa7706h_i2c_send(struct i2c_client client, const u8 data, int len)
	140	{
	141	int err = i2c_master_send(client, data, len);
	142	if (err == len)
	143	return 0;
	144	return err > 0 ? -EIO : err;
	145	}
	146
	147	static int saa7706h_i2c_transfer(struct i2c_client *client,
	148	struct i2c_msg *msgs, int num)
	149	{
	150	int err = i2c_transfer(client->adapter, msgs, num);
	151	if (err == num)
	152	return 0;
	153	return err > 0 ? -EIO : err;
	154	}
	155
	156	static int saa7706h_set_reg24(struct v4l2_subdev *sd, u16 reg, u32 val)
	157	{
	158	struct i2c_client *client = v4l2_get_subdevdata(sd);
	159	u8 buf[5];
	160	int pos = 0;
	161
	162	buf[pos++] = reg >> 8;
	163	buf[pos++] = reg;
	164	buf[pos++] = val >> 16;
	165	buf[pos++] = val >> 8;
	166	buf[pos++] = val;
	167
	168	return saa7706h_i2c_send(client, buf, pos);
	169	}
	170
	171	static int saa7706h_set_reg24_err(struct v4l2_subdev *sd, u16 reg, u32 val,
	172	int *err)
	173	{
	174	return err ? err : saa7706h_set_reg24(sd, reg, val);
	175	}
	176
	177	static int saa7706h_set_reg16(struct v4l2_subdev *sd, u16 reg, u16 val)
	178	{
	179	struct i2c_client *client = v4l2_get_subdevdata(sd);
	180	u8 buf[4];
	181	int pos = 0;
	182
	183	buf[pos++] = reg >> 8;
	184	buf[pos++] = reg;
	185	buf[pos++] = val >> 8;
	186	buf[pos++] = val;
	187
	188	return saa7706h_i2c_send(client, buf, pos);
	189	}
	190
	191	static int saa7706h_set_reg16_err(struct v4l2_subdev *sd, u16 reg, u16 val,
	192	int *err)
	193	{
	194	return err ? err : saa7706h_set_reg16(sd, reg, val);
195	}
196
197	static int saa7706h_get_reg16(struct v4l2_subdev *sd, u16 reg)
198	{
199	struct i2c_client *client = v4l2_get_subdevdata(sd);
200	u8 buf[2];
201	int err;
202	u8 regaddr[] = {reg >> 8, reg};
c43737aa S	203	struct i2c_msg msg[] = {
	204	{
	205	.addr = client->addr,
	206	.len = sizeof(regaddr),
	207	.buf = regaddr
	208	},
	209	{
	210	.addr = client->addr,
	211	.flags = I2C_M_RD,
	212	.len = sizeof(buf),
	213	.buf = buf
	214	}
	215	};
ee4b9dbb RR	216
	217	err = saa7706h_i2c_transfer(client, msg, ARRAY_SIZE(msg));
	218	if (err)
	219	return err;
	220
	221	return buf[0] << 8 \| buf[1];
	222	}
	223
	224	static int saa7706h_unmute(struct v4l2_subdev *sd)
	225	{
	226	struct saa7706h_state *state = to_state(sd);
	227	int err = 0;
	228
	229	err = saa7706h_set_reg16_err(sd, SAA7706H_REG_CTRL,
	230	SAA7706H_CTRL_PLL3_62975MHZ \| SAA7706H_CTRL_PC_RESET_DSP1 \|
	231	SAA7706H_CTRL_PC_RESET_DSP2, &err);
	232
	233	/* newer versions of the chip requires a small sleep after reset */
	234	msleep(1);
	235
	236	err = saa7706h_set_reg16_err(sd, SAA7706H_REG_CTRL,
	237	SAA7706H_CTRL_PLL3_62975MHZ, &err);
	238
	239	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_EVALUATION, 0, &err);
	240
	241	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CL_GEN1, 0x040022, &err);
	242
	243	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CL_GEN2,
	244	SAA7706H_CL_GEN2_WSEDGE_FALLING, &err);
	245
	246	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CL_GEN4, 0x024080, &err);
	247
	248	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_SEL, 0x200080, &err);
	249
	250	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_IAC, 0xf4caed, &err);
	251
	252	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CLK_SET, 0x124334, &err);
	253
	254	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CLK_COEFF, 0x004a1a,
	255	&err);
	256
	257	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_INPUT_SENS, 0x0071c7,
	258	&err);
	259
	260	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_PHONE_NAV_AUDIO,
	261	0x0e22ff, &err);
	262
	263	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_IO_CONF_DSP2, 0x001ff8,
	264	&err);
	265
	266	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_STATUS_DSP2, 0x080003,
	267	&err);
	268
	269	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_PC_DSP2, 0x000004, &err);
	270
	271	err = saa7706h_set_reg16_err(sd, SAA7706H_DSP1_MOD0, 0x0c6c, &err);
	272
	273	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_MPTR0, 0x000b4b, &err);
	274
	275	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP1_MODPNTR, 0x000600, &err);
	276
	277	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP1_MODPNTR, 0x0000c0, &err);
	278
	279	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_CONTLLCW, 0x000819,
280	&err);
281
282	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_CONTLLCW, 0x00085a,
283	&err);
284
285	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_BUSAMP, 0x7fffff,
286	&err);
287
288	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_FDACPNTR, 0x2000cb,
289	&err);
290
291	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_IIS1PNTR, 0x2000cb,
292	&err);
293
294	err = saa7706h_set_reg16_err(sd, SAA7706H_DSP2_YMEM_PVGA, 0x0f80, &err);
295
296	err = saa7706h_set_reg16_err(sd, SAA7706H_DSP2_YMEM_PVAT1, 0x0800,
297	&err);
298
299	err = saa7706h_set_reg16_err(sd, SAA7706H_DSP2_YMEM_PVAT, 0x0800, &err);
300
301	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_CONTLLCW, 0x000905,
302	&err);
303	if (!err)
304	state->muted = 0;
305	return err;
306	}
307
308	static int saa7706h_mute(struct v4l2_subdev *sd)
309	{
310	struct saa7706h_state *state = to_state(sd);
311	int err;
312
313	err = saa7706h_set_reg16(sd, SAA7706H_REG_CTRL,
314	SAA7706H_CTRL_PLL3_62975MHZ \| SAA7706H_CTRL_PC_RESET_DSP1 \|
315	SAA7706H_CTRL_PC_RESET_DSP2);
316	if (!err)
317	state->muted = 1;
318	return err;
319	}
320
8ff61832	321	static int saa7706h_s_ctrl(struct v4l2_ctrl *ctrl)
ee4b9dbb	322	{
8ff61832 HV	323	struct saa7706h_state *state =
8ff61832 HV	324	container_of(ctrl->handler, struct saa7706h_state, hdl);
ee4b9dbb RR	325
	326	switch (ctrl->id) {
	327	case V4L2_CID_AUDIO_MUTE:
8ff61832 HV	328	if (ctrl->val)
	329	return saa7706h_mute(&state->sd);
	330	return saa7706h_unmute(&state->sd);
ee4b9dbb RR	331	}
	332	return -EINVAL;
	333	}
	334
8ff61832 HV	335	static const struct v4l2_ctrl_ops saa7706h_ctrl_ops = {
	336	.s_ctrl = saa7706h_s_ctrl,
	337	};
ee4b9dbb	338
387a6924	339	static const struct v4l2_subdev_ops empty_ops = {};
ee4b9dbb RR	340
	341	/*
	342	* Generic i2c probe
	343	* concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
	344	*/
	345
4c62e976 GKH	346	static int saa7706h_probe(struct i2c_client *client,
4c62e976 GKH	347	const struct i2c_device_id *id)
ee4b9dbb RR	348	{
	349	struct saa7706h_state *state;
	350	struct v4l2_subdev *sd;
	351	int err;
	352
	353	/* Check if the adapter supports the needed features */
	354	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
	355	return -EIO;
	356
	357	v4l_info(client, "chip found @ 0x%02x (%s)\n",
	358	client->addr << 1, client->adapter->name);
	359
80845a33	360	state = kzalloc(sizeof(struct saa7706h_state), GFP_KERNEL);
ee4b9dbb RR	361	if (state == NULL)
	362	return -ENOMEM;
	363	sd = &state->sd;
387a6924	364	v4l2_i2c_subdev_init(sd, client, &empty_ops);
ee4b9dbb	365
8ff61832 HV	366	v4l2_ctrl_handler_init(&state->hdl, 4);
	367	v4l2_ctrl_new_std(&state->hdl, &saa7706h_ctrl_ops,
	368	V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
	369	sd->ctrl_handler = &state->hdl;
	370	err = state->hdl.error;
	371	if (err)
	372	goto err;
	373
ee4b9dbb RR	374	/* check the rom versions */
	375	err = saa7706h_get_reg16(sd, SAA7706H_DSP1_ROM_VER);
	376	if (err < 0)
	377	goto err;
	378	if (err != SUPPORTED_DSP1_ROM_VER)
	379	v4l2_warn(sd, "Unknown DSP1 ROM code version: 0x%x\n", err);
ee4b9dbb RR	380	state->muted = 1;
	381
	382	/* startup in a muted state */
	383	err = saa7706h_mute(sd);
	384	if (err)
	385	goto err;
	386
	387	return 0;
	388
	389	err:
	390	v4l2_device_unregister_subdev(sd);
8ff61832	391	v4l2_ctrl_handler_free(&state->hdl);
ee4b9dbb RR	392	kfree(to_state(sd));
	393
	394	printk(KERN_ERR DRIVER_NAME ": Failed to probe: %d\n", err);
	395
	396	return err;
	397	}
	398
4c62e976	399	static int saa7706h_remove(struct i2c_client *client)
ee4b9dbb RR	400	{
ee4b9dbb RR	401	struct v4l2_subdev *sd = i2c_get_clientdata(client);
8ff61832	402	struct saa7706h_state *state = to_state(sd);
ee4b9dbb RR	403
	404	saa7706h_mute(sd);
	405	v4l2_device_unregister_subdev(sd);
8ff61832	406	v4l2_ctrl_handler_free(&state->hdl);
ee4b9dbb RR	407	kfree(to_state(sd));
	408	return 0;
	409	}
	410
	411	static const struct i2c_device_id saa7706h_id[] = {
	412	{DRIVER_NAME, 0},
	413	{},
	414	};
	415
	416	MODULE_DEVICE_TABLE(i2c, saa7706h_id);
	417
	418	static struct i2c_driver saa7706h_driver = {
	419	.driver = {
ee4b9dbb RR	420	.name = DRIVER_NAME,
	421	},
	422	.probe = saa7706h_probe,
4c62e976	423	.remove = saa7706h_remove,
ee4b9dbb RR	424	.id_table = saa7706h_id,
	425	};
	426
c6e8d86f	427	module_i2c_driver(saa7706h_driver);
ee4b9dbb RR	428
	429	MODULE_DESCRIPTION("SAA7706H Car Radio DSP driver");
	430	MODULE_AUTHOR("Mocean Laboratories");
	431	MODULE_LICENSE("GPL v2");