[GitHub/mt8127/android_kernel_alcatel_ttab.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-chip-ident.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;
	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_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
{
	switch (qc->id) {
	case V4L2_CID_AUDIO_MUTE:
		return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
	}
	return -EINVAL;
}

static int saa7706h_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
	struct saa7706h_state *state = to_state(sd);

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		ctrl->value = state->muted;
		return 0;
	}
	return -EINVAL;
}

static int saa7706h_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		if (ctrl->value)
			return saa7706h_mute(sd);
		return saa7706h_unmute(sd);
	}
	return -EINVAL;
}

static int saa7706h_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_SAA7706H, 0);
}

static const struct v4l2_subdev_core_ops saa7706h_core_ops = {
	.g_chip_ident = saa7706h_g_chip_ident,
	.queryctrl = saa7706h_queryctrl,
	.g_ctrl = saa7706h_g_ctrl,
	.s_ctrl = saa7706h_s_ctrl,
};

static const struct v4l2_subdev_ops saa7706h_ops = {
	.core = &saa7706h_core_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, &saa7706h_ops);

	/* 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);
	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);

	saa7706h_mute(sd);
	v4l2_device_unregister_subdev(sd);
	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 = {
		.owner	= THIS_MODULE,
		.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 RR	27	#include <media/v4l2-device.h>
	28	#include <media/v4l2-chip-ident.h>
	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;
130	unsigned muted;
131	};
132
133	static inline struct saa7706h_state to_state(struct v4l2_subdev sd)
134	{
135	return container_of(sd, struct saa7706h_state, sd);
136	}
137
138	static int saa7706h_i2c_send(struct i2c_client client, const u8 data, int len)
139	{
140	int err = i2c_master_send(client, data, len);
141	if (err == len)
142	return 0;
143	return err > 0 ? -EIO : err;
144	}
145
146	static int saa7706h_i2c_transfer(struct i2c_client *client,
147	struct i2c_msg *msgs, int num)
148	{
149	int err = i2c_transfer(client->adapter, msgs, num);
150	if (err == num)
151	return 0;
152	return err > 0 ? -EIO : err;
153	}
154
155	static int saa7706h_set_reg24(struct v4l2_subdev *sd, u16 reg, u32 val)
156	{
157	struct i2c_client *client = v4l2_get_subdevdata(sd);
158	u8 buf[5];
159	int pos = 0;
160
161	buf[pos++] = reg >> 8;
162	buf[pos++] = reg;
163	buf[pos++] = val >> 16;
164	buf[pos++] = val >> 8;
165	buf[pos++] = val;
166
167	return saa7706h_i2c_send(client, buf, pos);
168	}
169
170	static int saa7706h_set_reg24_err(struct v4l2_subdev *sd, u16 reg, u32 val,
171	int *err)
172	{
173	return err ? err : saa7706h_set_reg24(sd, reg, val);
174	}
175
176	static int saa7706h_set_reg16(struct v4l2_subdev *sd, u16 reg, u16 val)
177	{
178	struct i2c_client *client = v4l2_get_subdevdata(sd);
179	u8 buf[4];
180	int pos = 0;
181
182	buf[pos++] = reg >> 8;
183	buf[pos++] = reg;
184	buf[pos++] = val >> 8;
185	buf[pos++] = val;
186
187	return saa7706h_i2c_send(client, buf, pos);
188	}
189
190	static int saa7706h_set_reg16_err(struct v4l2_subdev *sd, u16 reg, u16 val,
191	int *err)
192	{
193	return err ? err : saa7706h_set_reg16(sd, reg, val);
194	}
195
196	static int saa7706h_get_reg16(struct v4l2_subdev *sd, u16 reg)
197	{
198	struct i2c_client *client = v4l2_get_subdevdata(sd);
199	u8 buf[2];
200	int err;
201	u8 regaddr[] = {reg >> 8, reg};
c43737aa S	202	struct i2c_msg msg[] = {
	203	{
	204	.addr = client->addr,
	205	.len = sizeof(regaddr),
	206	.buf = regaddr
	207	},
	208	{
	209	.addr = client->addr,
	210	.flags = I2C_M_RD,
	211	.len = sizeof(buf),
	212	.buf = buf
	213	}
	214	};
ee4b9dbb RR	215
	216	err = saa7706h_i2c_transfer(client, msg, ARRAY_SIZE(msg));
	217	if (err)
	218	return err;
	219
	220	return buf[0] << 8 \| buf[1];
	221	}
	222
	223	static int saa7706h_unmute(struct v4l2_subdev *sd)
	224	{
	225	struct saa7706h_state *state = to_state(sd);
	226	int err = 0;
	227
	228	err = saa7706h_set_reg16_err(sd, SAA7706H_REG_CTRL,
	229	SAA7706H_CTRL_PLL3_62975MHZ \| SAA7706H_CTRL_PC_RESET_DSP1 \|
	230	SAA7706H_CTRL_PC_RESET_DSP2, &err);
	231
	232	/* newer versions of the chip requires a small sleep after reset */
	233	msleep(1);
	234
	235	err = saa7706h_set_reg16_err(sd, SAA7706H_REG_CTRL,
	236	SAA7706H_CTRL_PLL3_62975MHZ, &err);
	237
	238	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_EVALUATION, 0, &err);
	239
	240	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CL_GEN1, 0x040022, &err);
	241
	242	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CL_GEN2,
	243	SAA7706H_CL_GEN2_WSEDGE_FALLING, &err);
	244
	245	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CL_GEN4, 0x024080, &err);
	246
	247	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_SEL, 0x200080, &err);
	248
	249	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_IAC, 0xf4caed, &err);
	250
	251	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CLK_SET, 0x124334, &err);
	252
	253	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CLK_COEFF, 0x004a1a,
	254	&err);
	255
	256	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_INPUT_SENS, 0x0071c7,
	257	&err);
	258
	259	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_PHONE_NAV_AUDIO,
	260	0x0e22ff, &err);
	261
	262	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_IO_CONF_DSP2, 0x001ff8,
	263	&err);
	264
	265	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_STATUS_DSP2, 0x080003,
	266	&err);
	267
	268	err = saa7706h_set_reg24_err(sd, SAA7706H_REG_PC_DSP2, 0x000004, &err);
	269
	270	err = saa7706h_set_reg16_err(sd, SAA7706H_DSP1_MOD0, 0x0c6c, &err);
	271
	272	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_MPTR0, 0x000b4b, &err);
	273
	274	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP1_MODPNTR, 0x000600, &err);
	275
	276	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP1_MODPNTR, 0x0000c0, &err);
	277
	278	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_CONTLLCW, 0x000819,
279	&err);
280
281	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_CONTLLCW, 0x00085a,
282	&err);
283
284	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_BUSAMP, 0x7fffff,
285	&err);
286
287	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_FDACPNTR, 0x2000cb,
288	&err);
289
290	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_IIS1PNTR, 0x2000cb,
291	&err);
292
293	err = saa7706h_set_reg16_err(sd, SAA7706H_DSP2_YMEM_PVGA, 0x0f80, &err);
294
295	err = saa7706h_set_reg16_err(sd, SAA7706H_DSP2_YMEM_PVAT1, 0x0800,
296	&err);
297
298	err = saa7706h_set_reg16_err(sd, SAA7706H_DSP2_YMEM_PVAT, 0x0800, &err);
299
300	err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_CONTLLCW, 0x000905,
301	&err);
302	if (!err)
303	state->muted = 0;
304	return err;
305	}
306
307	static int saa7706h_mute(struct v4l2_subdev *sd)
308	{
309	struct saa7706h_state *state = to_state(sd);
310	int err;
311
312	err = saa7706h_set_reg16(sd, SAA7706H_REG_CTRL,
313	SAA7706H_CTRL_PLL3_62975MHZ \| SAA7706H_CTRL_PC_RESET_DSP1 \|
314	SAA7706H_CTRL_PC_RESET_DSP2);
315	if (!err)
316	state->muted = 1;
317	return err;
318	}
319
320	static int saa7706h_queryctrl(struct v4l2_subdev sd, struct v4l2_queryctrl qc)
321	{
322	switch (qc->id) {
323	case V4L2_CID_AUDIO_MUTE:
324	return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
325	}
326	return -EINVAL;
327	}
328
329	static int saa7706h_g_ctrl(struct v4l2_subdev sd, struct v4l2_control ctrl)
330	{
331	struct saa7706h_state *state = to_state(sd);
332
333	switch (ctrl->id) {
334	case V4L2_CID_AUDIO_MUTE:
335	ctrl->value = state->muted;
336	return 0;
337	}
338	return -EINVAL;
339	}
340
341	static int saa7706h_s_ctrl(struct v4l2_subdev sd, struct v4l2_control ctrl)
342	{
343	switch (ctrl->id) {
344	case V4L2_CID_AUDIO_MUTE:
345	if (ctrl->value)
346	return saa7706h_mute(sd);
347	return saa7706h_unmute(sd);
348	}
349	return -EINVAL;
350	}
351
352	static int saa7706h_g_chip_ident(struct v4l2_subdev *sd,
353	struct v4l2_dbg_chip_ident *chip)
354	{
355	struct i2c_client *client = v4l2_get_subdevdata(sd);
356
357	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_SAA7706H, 0);
358	}
359
360	static const struct v4l2_subdev_core_ops saa7706h_core_ops = {
361	.g_chip_ident = saa7706h_g_chip_ident,
362	.queryctrl = saa7706h_queryctrl,
363	.g_ctrl = saa7706h_g_ctrl,
364	.s_ctrl = saa7706h_s_ctrl,
365	};
366
367	static const struct v4l2_subdev_ops saa7706h_ops = {
368	.core = &saa7706h_core_ops,
369	};
370
371	/*
372	* Generic i2c probe
373	* concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
374	*/
375
4c62e976 GKH	376	static int saa7706h_probe(struct i2c_client *client,
4c62e976 GKH	377	const struct i2c_device_id *id)
ee4b9dbb RR	378	{
	379	struct saa7706h_state *state;
	380	struct v4l2_subdev *sd;
	381	int err;
	382
	383	/* Check if the adapter supports the needed features */
	384	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
	385	return -EIO;
	386
	387	v4l_info(client, "chip found @ 0x%02x (%s)\n",
	388	client->addr << 1, client->adapter->name);
	389
80845a33	390	state = kzalloc(sizeof(struct saa7706h_state), GFP_KERNEL);
ee4b9dbb RR	391	if (state == NULL)
	392	return -ENOMEM;
	393	sd = &state->sd;
	394	v4l2_i2c_subdev_init(sd, client, &saa7706h_ops);
	395
	396	/* check the rom versions */
	397	err = saa7706h_get_reg16(sd, SAA7706H_DSP1_ROM_VER);
	398	if (err < 0)
	399	goto err;
	400	if (err != SUPPORTED_DSP1_ROM_VER)
	401	v4l2_warn(sd, "Unknown DSP1 ROM code version: 0x%x\n", err);
	402
	403	state->muted = 1;
	404
	405	/* startup in a muted state */
	406	err = saa7706h_mute(sd);
	407	if (err)
	408	goto err;
	409
	410	return 0;
	411
	412	err:
	413	v4l2_device_unregister_subdev(sd);
	414	kfree(to_state(sd));
	415
	416	printk(KERN_ERR DRIVER_NAME ": Failed to probe: %d\n", err);
	417
	418	return err;
	419	}
	420
4c62e976	421	static int saa7706h_remove(struct i2c_client *client)
ee4b9dbb RR	422	{
	423	struct v4l2_subdev *sd = i2c_get_clientdata(client);
	424
	425	saa7706h_mute(sd);
	426	v4l2_device_unregister_subdev(sd);
	427	kfree(to_state(sd));
	428	return 0;
	429	}
	430
	431	static const struct i2c_device_id saa7706h_id[] = {
	432	{DRIVER_NAME, 0},
	433	{},
	434	};
	435
	436	MODULE_DEVICE_TABLE(i2c, saa7706h_id);
	437
	438	static struct i2c_driver saa7706h_driver = {
	439	.driver = {
	440	.owner = THIS_MODULE,
	441	.name = DRIVER_NAME,
	442	},
	443	.probe = saa7706h_probe,
4c62e976	444	.remove = saa7706h_remove,
ee4b9dbb RR	445	.id_table = saa7706h_id,
	446	};
	447
c6e8d86f	448	module_i2c_driver(saa7706h_driver);
ee4b9dbb RR	449
	450	MODULE_DESCRIPTION("SAA7706H Car Radio DSP driver");
	451	MODULE_AUTHOR("Mocean Laboratories");
	452	MODULE_LICENSE("GPL v2");