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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;
+}