clock.h

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/*
 *  linux/arch/arm/mach-omap1/clock.h
 *
 *  Copyright (C) 2004 - 2005, 2009 Nokia corporation
 *  Written by Tuukka Tikkanen <[email protected]>
 *  Based on clocks.h by Tony Lindgren, Gordon McNutt and RidgeRun, Inc
 *
 * 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.
 */

#ifndef __ARCH_ARM_MACH_OMAP1_CLOCK_H
#define __ARCH_ARM_MACH_OMAP1_CLOCK_H

#include <linux/clk.h>

#include <plat/clock.h>

int omap1_clk_init(void);
void omap1_clk_late_init(void);
extern int omap1_clk_enable(struct clk *clk);
extern void omap1_clk_disable(struct clk *clk);
extern long omap1_clk_round_rate(struct clk *clk, unsigned long rate);
extern int omap1_clk_set_rate(struct clk *clk, unsigned long rate);
extern unsigned long omap1_ckctl_recalc(struct clk *clk);
extern int omap1_set_sossi_rate(struct clk *clk, unsigned long rate);
extern unsigned long omap1_sossi_recalc(struct clk *clk);
extern unsigned long omap1_ckctl_recalc_dsp_domain(struct clk *clk);
extern int omap1_clk_set_rate_dsp_domain(struct clk *clk, unsigned long rate);
extern int omap1_set_uart_rate(struct clk *clk, unsigned long rate);
extern unsigned long omap1_uart_recalc(struct clk *clk);
extern int omap1_set_ext_clk_rate(struct clk *clk, unsigned long rate);
extern long omap1_round_ext_clk_rate(struct clk *clk, unsigned long rate);
extern void omap1_init_ext_clk(struct clk *clk);
extern int omap1_select_table_rate(struct clk *clk, unsigned long rate);
extern long omap1_round_to_table_rate(struct clk *clk, unsigned long rate);
extern int omap1_clk_set_rate_ckctl_arm(struct clk *clk, unsigned long rate);
extern long omap1_clk_round_rate_ckctl_arm(struct clk *clk, unsigned long rate);
extern unsigned long omap1_watchdog_recalc(struct clk *clk);

#ifdef CONFIG_OMAP_RESET_CLOCKS
extern void omap1_clk_disable_unused(struct clk *clk);
#else
#define omap1_clk_disable_unused    NULL
#endif

struct uart_clk {
    struct clk  clk;
    unsigned long   sysc_addr;
};

/* Provide a method for preventing idling some ARM IDLECT clocks */
struct arm_idlect1_clk {
    struct clk  clk;
    unsigned long   no_idle_count;
    __u8        idlect_shift;
};

/* ARM_CKCTL bit shifts */
#define CKCTL_PERDIV_OFFSET 0
#define CKCTL_LCDDIV_OFFSET 2
#define CKCTL_ARMDIV_OFFSET 4
#define CKCTL_DSPDIV_OFFSET 6
#define CKCTL_TCDIV_OFFSET  8
#define CKCTL_DSPMMUDIV_OFFSET  10
/*#define ARM_TIMXO     12*/
#define EN_DSPCK        13
/*#define ARM_INTHCK_SEL    14*/ /* Divide-by-2 for mpu inth_ck */
/* DSP_CKCTL bit shifts */
#define CKCTL_DSPPERDIV_OFFSET  0

/* ARM_IDLECT2 bit shifts */
#define EN_WDTCK    0
#define EN_XORPCK   1
#define EN_PERCK    2
#define EN_LCDCK    3
#define EN_LBCK     4 /* Not on 1610/1710 */
/*#define EN_HSABCK 5*/
#define EN_APICK    6
#define EN_TIMCK    7
#define DMACK_REQ   8
#define EN_GPIOCK   9 /* Not on 1610/1710 */
/*#define EN_LBFREECK   10*/
#define EN_CKOUT_ARM    11

/* ARM_IDLECT3 bit shifts */
#define EN_OCPI_CK  0
#define EN_TC1_CK   2
#define EN_TC2_CK   4

/* DSP_IDLECT2 bit shifts (0,1,2 are same as for ARM_IDLECT2) */
#define EN_DSPTIMCK 5

/* Various register defines for clock controls scattered around OMAP chip */
#define SDW_MCLK_INV_BIT    2   /* In ULPD_CLKC_CTRL */
#define USB_MCLK_EN_BIT     4   /* In ULPD_CLKC_CTRL */
#define USB_HOST_HHC_UHOST_EN   9   /* In MOD_CONF_CTRL_0 */
#define SWD_ULPD_PLL_CLK_REQ    1   /* In SWD_CLK_DIV_CTRL_SEL */
#define COM_ULPD_PLL_CLK_REQ    1   /* In COM_CLK_DIV_CTRL_SEL */
#define SWD_CLK_DIV_CTRL_SEL    0xfffe0874
#define COM_CLK_DIV_CTRL_SEL    0xfffe0878
#define SOFT_REQ_REG        0xfffe0834
#define SOFT_REQ_REG2       0xfffe0880

extern __u32 arm_idlect1_mask;
extern struct clk *api_ck_p, *ck_dpll1_p, *ck_ref_p;

extern const struct clkops clkops_dspck;
extern const struct clkops clkops_dummy;
extern const struct clkops clkops_uart_16xx;
extern const struct clkops clkops_generic;

/* used for passing SoC type to omap1_{select,round_to}_table_rate() */
extern u32 cpu_mask;

#endif