clock34xx.c

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/*
 * OMAP3-specific clock framework functions
 *
 * Copyright (C) 2007-2008 Texas Instruments, Inc.
 * Copyright (C) 2007-2011 Nokia Corporation
 *
 * Paul Walmsley
 * Jouni Högander
 *
 * Parts of this code are based on code written by
 * Richard Woodruff, Tony Lindgren, Tuukka Tikkanen, Karthik Dasu,
 * Russell King
 *
 * 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.
 */
#undef DEBUG

#include <linux/kernel.h>
#include <linux/clk.h>
#include <linux/io.h>

#include <plat/clock.h>

#include "clock.h"
#include "clock34xx.h"
#include "cm2xxx_3xxx.h"
#include "cm-regbits-34xx.h"

static void omap3430es2_clk_ssi_find_idlest(struct clk *clk,
                        void __iomem **idlest_reg,
                        u8 *idlest_bit,
                        u8 *idlest_val)
{
    u32 r;

    r = (((__force u32)clk->enable_reg & ~0xf0) | 0x20);
    *idlest_reg = (__force void __iomem *)r;
    *idlest_bit = OMAP3430ES2_ST_SSI_IDLE_SHIFT;
    *idlest_val = OMAP34XX_CM_IDLEST_VAL;
}

const struct clkops clkops_omap3430es2_ssi_wait = {
    .enable     = omap2_dflt_clk_enable,
    .disable    = omap2_dflt_clk_disable,
    .find_idlest    = omap3430es2_clk_ssi_find_idlest,
    .find_companion = omap2_clk_dflt_find_companion,
};

const struct clkops clkops_omap3430es2_iclk_ssi_wait = {
    .enable     = omap2_dflt_clk_enable,
    .disable    = omap2_dflt_clk_disable,
    .find_idlest    = omap3430es2_clk_ssi_find_idlest,
    .find_companion = omap2_clk_dflt_find_companion,
    .allow_idle = omap2_clkt_iclk_allow_idle,
    .deny_idle  = omap2_clkt_iclk_deny_idle,
};

static void omap3430es2_clk_dss_usbhost_find_idlest(struct clk *clk,
                            void __iomem **idlest_reg,
                            u8 *idlest_bit,
                            u8 *idlest_val)
{
    u32 r;

    r = (((__force u32)clk->enable_reg & ~0xf0) | 0x20);
    *idlest_reg = (__force void __iomem *)r;
    /* USBHOST_IDLE has same shift */
    *idlest_bit = OMAP3430ES2_ST_DSS_IDLE_SHIFT;
    *idlest_val = OMAP34XX_CM_IDLEST_VAL;
}

const struct clkops clkops_omap3430es2_dss_usbhost_wait = {
    .enable     = omap2_dflt_clk_enable,
    .disable    = omap2_dflt_clk_disable,
    .find_idlest    = omap3430es2_clk_dss_usbhost_find_idlest,
    .find_companion = omap2_clk_dflt_find_companion,
};

const struct clkops clkops_omap3430es2_iclk_dss_usbhost_wait = {
    .enable     = omap2_dflt_clk_enable,
    .disable    = omap2_dflt_clk_disable,
    .find_idlest    = omap3430es2_clk_dss_usbhost_find_idlest,
    .find_companion = omap2_clk_dflt_find_companion,
    .allow_idle = omap2_clkt_iclk_allow_idle,
    .deny_idle  = omap2_clkt_iclk_deny_idle,
};

static void omap3430es2_clk_hsotgusb_find_idlest(struct clk *clk,
                         void __iomem **idlest_reg,
                         u8 *idlest_bit,
                         u8 *idlest_val)
{
    u32 r;

    r = (((__force u32)clk->enable_reg & ~0xf0) | 0x20);
    *idlest_reg = (__force void __iomem *)r;
    *idlest_bit = OMAP3430ES2_ST_HSOTGUSB_IDLE_SHIFT;
    *idlest_val = OMAP34XX_CM_IDLEST_VAL;
}

const struct clkops clkops_omap3430es2_hsotgusb_wait = {
    .enable     = omap2_dflt_clk_enable,
    .disable    = omap2_dflt_clk_disable,
    .find_idlest    = omap3430es2_clk_hsotgusb_find_idlest,
    .find_companion = omap2_clk_dflt_find_companion,
};

const struct clkops clkops_omap3430es2_iclk_hsotgusb_wait = {
    .enable     = omap2_dflt_clk_enable,
    .disable    = omap2_dflt_clk_disable,
    .find_idlest    = omap3430es2_clk_hsotgusb_find_idlest,
    .find_companion = omap2_clk_dflt_find_companion,
    .allow_idle = omap2_clkt_iclk_allow_idle,
    .deny_idle  = omap2_clkt_iclk_deny_idle,
};