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/***************************************************************************//**
* @file util.c
* @brief Implementation of Util Driver.
* @author DBogdan (dragos.bogdan@analog.com)
********************************************************************************
* Copyright 2013(c) Analog Devices, Inc.
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* - Neither the name of Analog Devices, Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
* - The use of this software may or may not infringe the patent rights
* of one or more patent holders. This license does not release you
* from the requirement that you obtain separate licenses from these
* patent holders to use this software.
* - Use of the software either in source or binary form, must be run
* on or directly connected to an Analog Devices Inc. component.
*
* THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT,
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, INTELLECTUAL PROPERTY RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*******************************************************************************/
/******************************************************************************/
/***************************** Include Files **********************************/
/******************************************************************************/
#include "util.h"
#include "string.h"
#include "platform.h"
/******************************************************************************/
/*************************** Macros Definitions *******************************/
/******************************************************************************/
#define BITS_PER_LONG 32
/***************************************************************************//**
* @brief clk_prepare_enable
*******************************************************************************/
int32_t clk_prepare_enable(struct clk *clk)
{
if (clk) {
// Unused variable - fix compiler warning
}
return 0;
}
/***************************************************************************//**
* @brief clk_get_rate
*******************************************************************************/
uint32_t clk_get_rate(struct ad9361_rf_phy *phy,
struct refclk_scale *clk_priv)
{
uint32_t rate = 0;
uint32_t source;
source = clk_priv->source;
switch (source) {
case TX_REFCLK:
case RX_REFCLK:
case BB_REFCLK:
rate = ad9361_clk_factor_recalc_rate(clk_priv,
phy->clk_refin->rate);
break;
case TX_RFPLL_INT:
case RX_RFPLL_INT:
rate = ad9361_rfpll_int_recalc_rate(clk_priv,
phy->clks[clk_priv->parent_source]->rate);
case RX_RFPLL_DUMMY:
case TX_RFPLL_DUMMY:
rate = ad9361_rfpll_dummy_recalc_rate(clk_priv);
break;
case TX_RFPLL:
case RX_RFPLL:
rate = ad9361_rfpll_recalc_rate(clk_priv);
break;
case BBPLL_CLK:
rate = ad9361_bbpll_recalc_rate(clk_priv,
phy->clks[clk_priv->parent_source]->rate);
break;
case ADC_CLK:
case R2_CLK:
case R1_CLK:
case CLKRF_CLK:
case RX_SAMPL_CLK:
case DAC_CLK:
case T2_CLK:
case T1_CLK:
case CLKTF_CLK:
case TX_SAMPL_CLK:
rate = ad9361_clk_factor_recalc_rate(clk_priv,
phy->clks[clk_priv->parent_source]->rate);
break;
default:
break;
}
return rate;
}
/***************************************************************************//**
* @brief clk_set_rate
*******************************************************************************/
int32_t clk_set_rate(struct ad9361_rf_phy *phy,
struct refclk_scale *clk_priv,
uint32_t rate)
{
uint32_t source;
int32_t i;
uint32_t round_rate;
source = clk_priv->source;
if(phy->clks[source]->rate != rate)
{
switch (source) {
case TX_REFCLK:
case RX_REFCLK:
case BB_REFCLK:
round_rate = ad9361_clk_factor_round_rate(clk_priv, rate,
&phy->clk_refin->rate);
ad9361_clk_factor_set_rate(clk_priv, round_rate,
phy->clk_refin->rate);
phy->clks[source]->rate = ad9361_clk_factor_recalc_rate(clk_priv,
phy->clk_refin->rate);
break;
case TX_RFPLL_INT:
case RX_RFPLL_INT:
round_rate = ad9361_rfpll_int_round_rate(clk_priv, rate,
&phy->clks[clk_priv->parent_source]->rate);
ad9361_rfpll_int_set_rate(clk_priv, round_rate,
phy->clks[clk_priv->parent_source]->rate);
phy->clks[source]->rate = ad9361_rfpll_int_recalc_rate(clk_priv,
phy->clks[clk_priv->parent_source]->rate);
break;
case RX_RFPLL_DUMMY:
case TX_RFPLL_DUMMY:
ad9361_rfpll_dummy_set_rate(clk_priv, rate);
case TX_RFPLL:
case RX_RFPLL:
round_rate = ad9361_rfpll_round_rate(clk_priv, rate);
ad9361_rfpll_set_rate(clk_priv, round_rate);
phy->clks[source]->rate = ad9361_rfpll_recalc_rate(clk_priv);
break;
case BBPLL_CLK:
round_rate = ad9361_bbpll_round_rate(clk_priv, rate,
&phy->clks[clk_priv->parent_source]->rate);
ad9361_bbpll_set_rate(clk_priv, round_rate,
phy->clks[clk_priv->parent_source]->rate);
phy->clks[source]->rate = ad9361_bbpll_recalc_rate(clk_priv,
phy->clks[clk_priv->parent_source]->rate);
phy->bbpll_initialized = true;
break;
case ADC_CLK:
case R2_CLK:
case R1_CLK:
case CLKRF_CLK:
case RX_SAMPL_CLK:
case DAC_CLK:
case T2_CLK:
case T1_CLK:
case CLKTF_CLK:
case TX_SAMPL_CLK:
round_rate = ad9361_clk_factor_round_rate(clk_priv, rate,
&phy->clks[clk_priv->parent_source]->rate);
ad9361_clk_factor_set_rate(clk_priv, round_rate,
phy->clks[clk_priv->parent_source]->rate);
phy->clks[source]->rate = ad9361_clk_factor_recalc_rate(clk_priv,
phy->clks[clk_priv->parent_source]->rate);
break;
default:
break;
}
for(i = BB_REFCLK; i < BBPLL_CLK; i++)
{
phy->clks[i]->rate = ad9361_clk_factor_recalc_rate(phy->ref_clk_scale[i],
phy->clk_refin->rate);
}
phy->clks[BBPLL_CLK]->rate = ad9361_bbpll_recalc_rate(phy->ref_clk_scale[BBPLL_CLK],
phy->clks[phy->ref_clk_scale[BBPLL_CLK]->parent_source]->rate);
for(i = ADC_CLK; i < RX_RFPLL_INT; i++)
{
phy->clks[i]->rate = ad9361_clk_factor_recalc_rate(phy->ref_clk_scale[i],
phy->clks[phy->ref_clk_scale[i]->parent_source]->rate);
}
for(i = RX_RFPLL_INT; i < RX_RFPLL_DUMMY; i++)
{
phy->clks[i]->rate = ad9361_rfpll_int_recalc_rate(phy->ref_clk_scale[i],
phy->clks[phy->ref_clk_scale[i]->parent_source]->rate);
}
for(i = RX_RFPLL_DUMMY; i < RX_RFPLL; i++)
{
phy->clks[i]->rate = ad9361_rfpll_dummy_recalc_rate(phy->ref_clk_scale[i]);
}
for(i = RX_RFPLL; i < NUM_AD9361_CLKS; i++)
{
phy->clks[i]->rate = ad9361_rfpll_recalc_rate(phy->ref_clk_scale[i]);
}
} else {
if ((source == BBPLL_CLK) && !phy->bbpll_initialized) {
round_rate = ad9361_bbpll_round_rate(clk_priv, rate,
&phy->clks[clk_priv->parent_source]->rate);
ad9361_bbpll_set_rate(clk_priv, round_rate,
phy->clks[clk_priv->parent_source]->rate);
phy->clks[source]->rate = ad9361_bbpll_recalc_rate(clk_priv,
phy->clks[clk_priv->parent_source]->rate);
phy->bbpll_initialized = true;
}
}
return 0;
}
/***************************************************************************//**
* @brief int_sqrt
*******************************************************************************/
uint32_t int_sqrt(uint32_t x)
{
uint32_t b, m, y = 0;
if (x <= 1)
return x;
m = 1UL << (BITS_PER_LONG - 2);
while (m != 0) {
b = y + m;
y >>= 1;
if (x >= b) {
x -= b;
y += m;
}
m >>= 2;
}
return y;
}
/***************************************************************************//**
* @brief ilog2
*******************************************************************************/
int32_t ilog2(int32_t x)
{
int32_t A = !(!(x >> 16));
int32_t count = 0;
int32_t x_copy = x;
count = count + (A << 4);
x_copy = (((~A + 1) & (x >> 16)) + (~(~A + 1) & x));
A = !(!(x_copy >> 8));
count = count + (A << 3);
x_copy = (((~A + 1) & (x_copy >> 8)) + (~(~A + 1) & x_copy));
A = !(!(x_copy >> 4));
count = count + (A << 2);
x_copy = (((~A + 1) & (x_copy >> 4)) + (~(~A + 1) & x_copy));
A = !(!(x_copy >> 2));
count = count + (A << 1);
x_copy = (((~A + 1) & (x_copy >> 2)) + (~(~A + 1) & x_copy));
A = !(!(x_copy >> 1));
count = count + A;
return count;
}
/***************************************************************************//**
* @brief do_div
*******************************************************************************/
uint64_t do_div(uint64_t* n, uint64_t base)
{
uint64_t mod = 0;
mod = *n % base;
*n = *n / base;
return mod;
}
/***************************************************************************//**
* @brief find_first_bit
*******************************************************************************/
uint32_t find_first_bit(uint32_t word)
{
int32_t num = 0;
if ((word & 0xffff) == 0) {
num += 16;
word >>= 16;
}
if ((word & 0xff) == 0) {
num += 8;
word >>= 8;
}
if ((word & 0xf) == 0) {
num += 4;
word >>= 4;
}
if ((word & 0x3) == 0) {
num += 2;
word >>= 2;
}
if ((word & 0x1) == 0)
num += 1;
return num;
}
/***************************************************************************//**
* @brief ERR_PTR
*******************************************************************************/
void * ERR_PTR(long error)
{
uintptr_t val = error;
return (void *) val;
}
/***************************************************************************//**
* @brief zmalloc
*******************************************************************************/
void *zmalloc(size_t size)
{
void *ptr = malloc(size);
if (ptr)
memset(ptr, 0, size);
mdelay(1);
return ptr;
}
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