sound/soc/codecs/tfa9897_init.c

/*
 *Copyright 2014,2015 NXP Semiconductors
 *
 *Licensed under the Apache License, Version 2.0 (the "License");
 *you may not use this file except in compliance with the License.
 *You may obtain a copy of the License at
 *            
 *http://www.apache.org/licenses/LICENSE-2.0
 *             
 *Unless required by applicable law or agreed to in writing, software
 *distributed under the License is distributed on an "AS IS" BASIS,
 *WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *See the License for the specific language governing permissions and
 *limitations under the License.
 */
 

#include "tfa_dsp_fw.h"
#include "tfa_service.h"
#include "tfa_internal.h"

#include "tfa98xx_tfafieldnames.h"

static enum Tfa98xx_Error tfa9897_specific(Tfa98xx_handle_t handle)
{
        enum Tfa98xx_Error error = Tfa98xx_Error_Ok;
        unsigned short check_value;

        if (!tfa98xx_handle_is_open(handle))
                return Tfa98xx_Error_NotOpen;

        /* all i2C registers must already set to default POR value */

        /* $48:[3] - 1 ==> 0; iddqtestbst - default value changed.
         * When Iddqtestbst is set to "0", the slewrate is reduced.
         * This will lower the overshoot on IN-B to avoid NMOS damage of booster.
         */
        error = tfa98xx_write_register16(handle, 0x48, 0x0300); /* POR value = 0x308 */

        /* $49:[0] - 1 ==> 0; CLIP - default value changed. 0 means CLIPPER on
         */
        error = tfa98xx_read_register16(handle, 0x49, &check_value);
        check_value &= ~0x1;
        error = tfa98xx_write_register16(handle, 0x49, check_value);

        return error;
}

/*
 * the int24 values for the vsfw delay table
 */
static unsigned char vsfwdelay_table[] = {
        0,0,2, /*Index 0 - Current/Volt Fractional Delay for 8KHz  */
        0,0,0, /*Index 1 - Current/Volt Fractional Delay for 11KHz */
        0,0,0, /*Index 2 - Current/Volt Fractional Delay for 12KHz */
        0,0,2, /*Index 3 - Current/Volt Fractional Delay for 16KHz */
        0,0,2, /*Index 4 - Current/Volt Fractional Delay for 22KHz */
        0,0,2, /*Index 5 - Current/Volt Fractional Delay for 24KHz */
        0,0,2, /*Index 6 - Current/Volt Fractional Delay for 32KHz */
        0,0,2, /*Index 7 - Current/Volt Fractional Delay for 44KHz */
        0,0,3 /*Index 8 - Current/Volt Fractional Delay for 48KHz */
};

/*
 * TODO make this tfa98xx
 *  Note that the former products write this table via the patch
 *  so moving this to the tfa98xx API requires also updating all patches
 */
static enum Tfa98xx_Error tfa9897_dsp_write_vsfwdelay_table(Tfa98xx_handle_t handle)
{
	enum Tfa98xx_Error error;
        error = tfa_dsp_cmd_id_write(handle, MODULE_FRAMEWORK,
        		             TFA1_FW_PAR_ID_SET_CURRENT_DELAY,
        		             sizeof(vsfwdelay_table),
		    		     vsfwdelay_table);
        return error;
}

/*
 * The int24 values for the fracdelay table
 * For now applicable only for 8 and 48 kHz
 */
static unsigned char cvfracdelay_table[] ={
        0,0,51, /*Index 0 - Current/Volt Fractional Delay for 8KHz  */
        0,0, 0, /*Index 1 - Current/Volt Fractional Delay for 11KHz */
        0,0, 0, /*Index 2 - Current/Volt Fractional Delay for 12KHz */
        0,0,38, /*Index 3 - Current/Volt Fractional Delay for 16KHz */
        0,0,34, /*Index 4 - Current/Volt Fractional Delay for 22KHz */
        0,0,33, /*Index 5 - Current/Volt Fractional Delay for 24KHz */
        0,0,11, /*Index 6 - Current/Volt Fractional Delay for 32KHz */
        0,0,2, /*Index 7 - Current/Volt Fractional Delay for 44KHz */
        0,0,62 /*Index 8 - Current/Volt Fractional Delay for 48KHz */
};

enum Tfa98xx_Error tfa9897_dsp_write_cvfracdelay_table(Tfa98xx_handle_t handle)
{
	enum Tfa98xx_Error error;
        error = tfa_dsp_cmd_id_write(handle, MODULE_FRAMEWORK,
        		             TFA1_FW_PAR_ID_SET_CURFRAC_DELAY,
        		             sizeof(cvfracdelay_table),
		    		     cvfracdelay_table);
        return error;
}

static enum Tfa98xx_Error tfa9897_tfa_dsp_write_tables(Tfa98xx_handle_t dev_idx, int sample_rate)
{
	enum Tfa98xx_Error error;

	/* Not used for max1! */
	sample_rate=sample_rate;

	error = tfa9897_dsp_write_vsfwdelay_table(dev_idx);
	if (error == Tfa98xx_Error_Ok) {
		error = tfa9897_dsp_write_cvfracdelay_table(dev_idx);
	}

	tfa98xx_dsp_reset(dev_idx, 1);
	tfa98xx_dsp_reset(dev_idx, 0);

	return error;
}

/*
 * register device specifics functions
 */
void tfa9897_ops(struct tfa_device_ops *ops) {
	ops->tfa_init=tfa9897_specific;
	ops->tfa_dsp_write_tables=tfa9897_tfa_dsp_write_tables;
}