linux-imx

/*

 * TI CDCE706 programmable 3-PLL clock synthesizer driver

 *

 * Copyright (c) 2014 Cadence Design Systems Inc.

 *

 * Reference: http://www.ti.com/lit/ds/symlink/cdce706.pdf

 *

 * 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.

 */

​

#include <linux/clk.h>

#include <linux/clk-provider.h>

#include <linux/delay.h>

#include <linux/i2c.h>

#include <linux/interrupt.h>

#include <linux/mod_devicetable.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/rational.h>

#include <linux/regmap.h>

#include <linux/slab.h>

​

#define CDCE706_CLKIN_CLOCK     10

#define CDCE706_CLKIN_SOURCE        11

#define CDCE706_PLL_M_LOW(pll)      (1 + 3 * (pll))

#define CDCE706_PLL_N_LOW(pll)      (2 + 3 * (pll))

#define CDCE706_PLL_HI(pll)     (3 + 3 * (pll))

#define CDCE706_PLL_MUX         3

#define CDCE706_PLL_FVCO        6

#define CDCE706_DIVIDER(div)        (13 + (div))

#define CDCE706_CLKOUT(out)     (19 + (out))

​

#define CDCE706_CLKIN_CLOCK_MASK    0x10

#define CDCE706_CLKIN_SOURCE_SHIFT  6

#define CDCE706_CLKIN_SOURCE_MASK   0xc0

#define CDCE706_CLKIN_SOURCE_LVCMOS 0x40

​

#define CDCE706_PLL_MUX_MASK(pll)   (0x80 >> (pll))

#define CDCE706_PLL_LOW_M_MASK      0xff

#define CDCE706_PLL_LOW_N_MASK      0xff

#define CDCE706_PLL_HI_M_MASK       0x1

#define CDCE706_PLL_HI_N_MASK       0x1e

#define CDCE706_PLL_HI_N_SHIFT      1

#define CDCE706_PLL_M_MAX       0x1ff

#define CDCE706_PLL_N_MAX       0xfff

#define CDCE706_PLL_FVCO_MASK(pll)  (0x80 >> (pll))

#define CDCE706_PLL_FREQ_MIN         80000000

#define CDCE706_PLL_FREQ_MAX        300000000

#define CDCE706_PLL_FREQ_HI     180000000

​

#define CDCE706_DIVIDER_PLL(div)    (9 + (div) - ((div) > 2) - ((div) > 4))

#define CDCE706_DIVIDER_PLL_SHIFT(div)  ((div) < 2 ? 5 : 3 * ((div) & 1))

#define CDCE706_DIVIDER_PLL_MASK(div)   (0x7 << CDCE706_DIVIDER_PLL_SHIFT(div))

#define CDCE706_DIVIDER_DIVIDER_MASK    0x7f

#define CDCE706_DIVIDER_DIVIDER_MAX 0x7f

​

#define CDCE706_CLKOUT_DIVIDER_MASK 0x7

#define CDCE706_CLKOUT_ENABLE_MASK  0x8

​

static const struct regmap_config cdce706_regmap_config = {

    .reg_bits = 8,