omap1_clk.c.svn-base

我们自己开发的一个OSEK操作系统！不知道可不可以？

/*
 * OMAP clocks.
 *
 * Copyright (C) 2006-2007 Andrzej Zaborowski  <[e-mail]>
 *
 * Clocks data comes in part from arch/arm/mach-omap1/clock.h in Linux.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */
#include "hw.h"
#include "omap.h"

struct clk {
    const char *name;
    const char *alias;
    struct clk *parent;
    struct clk *child1;
    struct clk *sibling;
#define ALWAYS_ENABLED		(1 << 0)
#define CLOCK_IN_OMAP310	(1 << 10)
#define CLOCK_IN_OMAP730	(1 << 11)
#define CLOCK_IN_OMAP1510	(1 << 12)
#define CLOCK_IN_OMAP16XX	(1 << 13)
    uint32_t flags;
    int id;

    int running;		/* Is currently ticking */
    int enabled;		/* Is enabled, regardless of its input clk */
    unsigned long rate;		/* Current rate (if .running) */
    unsigned int divisor;	/* Rate relative to input (if .enabled) */
    unsigned int multiplier;	/* Rate relative to input (if .enabled) */
    qemu_irq users[16];		/* Who to notify on change */
    int usecount;		/* Automatically idle when unused */
};

static struct clk xtal_osc12m = {
    .name	= "xtal_osc_12m",
    .rate	= 12000000,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | CLOCK_IN_OMAP310,
};

static struct clk xtal_osc32k = {
    .name	= "xtal_osc_32k",
    .rate	= 32768,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | CLOCK_IN_OMAP310,
};

static struct clk ck_ref = {
    .name	= "ck_ref",
    .alias	= "clkin",
    .parent	= &xtal_osc12m,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | CLOCK_IN_OMAP310 |
            ALWAYS_ENABLED,
};

/* If a dpll is disabled it becomes a bypass, child clocks don't stop */
static struct clk dpll1 = {
    .name	= "dpll1",
    .parent	= &ck_ref,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | CLOCK_IN_OMAP310 |
            ALWAYS_ENABLED,
};

static struct clk dpll2 = {
    .name	= "dpll2",
    .parent	= &ck_ref,
    .flags	= CLOCK_IN_OMAP310 | ALWAYS_ENABLED,
};

static struct clk dpll3 = {
    .name	= "dpll3",
    .parent	= &ck_ref,
    .flags	= CLOCK_IN_OMAP310 | ALWAYS_ENABLED,
};

static struct clk dpll4 = {
    .name	= "dpll4",
    .parent	= &ck_ref,
    .multiplier	= 4,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | CLOCK_IN_OMAP310,
};

static struct clk apll = {
    .name	= "apll",
    .parent	= &ck_ref,
    .multiplier	= 48,
    .divisor	= 12,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | CLOCK_IN_OMAP310,
};

static struct clk ck_48m = {
    .name	= "ck_48m",
    .parent	= &dpll4,	/* either dpll4 or apll */
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | CLOCK_IN_OMAP310,
};

static struct clk ck_dpll1out = {
    .name	= "ck_dpll1out",
    .parent	= &dpll1,
    .flags	= CLOCK_IN_OMAP16XX,
};

static struct clk sossi_ck = {
    .name	= "ck_sossi",
    .parent	= &ck_dpll1out,
    .flags	= CLOCK_IN_OMAP16XX,
};

static struct clk clkm1 = {
    .name	= "clkm1",
    .alias	= "ck_gen1",
    .parent	= &dpll1,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | CLOCK_IN_OMAP310 |
            ALWAYS_ENABLED,
};

static struct clk clkm2 = {
    .name	= "clkm2",
    .alias	= "ck_gen2",
    .parent	= &dpll1,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | CLOCK_IN_OMAP310 |
            ALWAYS_ENABLED,
};

static struct clk clkm3 = {
    .name	= "clkm3",
    .alias	= "ck_gen3",
    .parent	= &dpll1,	/* either dpll1 or ck_ref */
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | CLOCK_IN_OMAP310 |
            ALWAYS_ENABLED,
};

static struct clk arm_ck = {
    .name	= "arm_ck",
    .alias	= "mpu_ck",
    .parent	= &clkm1,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | CLOCK_IN_OMAP310 |
            ALWAYS_ENABLED,
};

static struct clk armper_ck = {
    .name	= "armper_ck",
    .alias	= "mpuper_ck",
    .parent	= &clkm1,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | CLOCK_IN_OMAP310,
};

static struct clk arm_gpio_ck = {
    .name	= "arm_gpio_ck",
    .alias	= "mpu_gpio_ck",
    .parent	= &clkm1,
    .divisor	= 1,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP310,
};

static struct clk armxor_ck = {
    .name	= "armxor_ck",
    .alias	= "mpuxor_ck",
    .parent	= &ck_ref,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | CLOCK_IN_OMAP310,
};

static struct clk armtim_ck = {
    .name	= "armtim_ck",
    .alias	= "mputim_ck",
    .parent	= &ck_ref,	/* either CLKIN or DPLL1 */
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | CLOCK_IN_OMAP310,
};

static struct clk armwdt_ck = {
    .name	= "armwdt_ck",
    .alias	= "mpuwd_ck",
    .parent	= &clkm1,
    .divisor	= 14,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | CLOCK_IN_OMAP310 |
            ALWAYS_ENABLED,
};

static struct clk arminth_ck16xx = {
    .name	= "arminth_ck",
    .parent	= &arm_ck,
    .flags	= CLOCK_IN_OMAP16XX | ALWAYS_ENABLED,
    /* Note: On 16xx the frequency can be divided by 2 by programming
     * ARM_CKCTL:ARM_INTHCK_SEL(14) to 1
     *
     * 1510 version is in TC clocks.
     */
};

static struct clk dsp_ck = {
    .name	= "dsp_ck",
    .parent	= &clkm2,
    .flags	= CLOCK_IN_OMAP310 | CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX,
};

static struct clk dspmmu_ck = {
    .name	= "dspmmu_ck",
    .parent	= &clkm2,
    .flags	= CLOCK_IN_OMAP310 | CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX |
            ALWAYS_ENABLED,
};

static struct clk dspper_ck = {
    .name	= "dspper_ck",
    .parent	= &clkm2,
    .flags	= CLOCK_IN_OMAP310 | CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX,
};

static struct clk dspxor_ck = {
    .name	= "dspxor_ck",
    .parent	= &ck_ref,
    .flags	= CLOCK_IN_OMAP310 | CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX,
};

static struct clk dsptim_ck = {
    .name	= "dsptim_ck",
    .parent	= &ck_ref,
    .flags	= CLOCK_IN_OMAP310 | CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX,
};

static struct clk tc_ck = {
    .name	= "tc_ck",
    .parent	= &clkm3,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX |
            CLOCK_IN_OMAP730 | CLOCK_IN_OMAP310 |
            ALWAYS_ENABLED,
};

static struct clk arminth_ck15xx = {
    .name	= "arminth_ck",
    .parent	= &tc_ck,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP310 | ALWAYS_ENABLED,
    /* Note: On 1510 the frequency follows TC_CK
     *
     * 16xx version is in MPU clocks.
     */
};

static struct clk tipb_ck = {
    /* No-idle controlled by "tc_ck" */
    .name	= "tipb_ck",
    .parent	= &tc_ck,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP310 | ALWAYS_ENABLED,
};

static struct clk l3_ocpi_ck = {
    /* No-idle controlled by "tc_ck" */
    .name	= "l3_ocpi_ck",
    .parent	= &tc_ck,
    .flags	= CLOCK_IN_OMAP16XX,
};

static struct clk tc1_ck = {
    .name	= "tc1_ck",
    .parent	= &tc_ck,
    .flags	= CLOCK_IN_OMAP16XX,
};

static struct clk tc2_ck = {
    .name	= "tc2_ck",
    .parent	= &tc_ck,
    .flags	= CLOCK_IN_OMAP16XX,
};

static struct clk dma_ck = {
    /* No-idle controlled by "tc_ck" */
    .name	= "dma_ck",
    .parent	= &tc_ck,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | CLOCK_IN_OMAP310 |
            ALWAYS_ENABLED,
};

static struct clk dma_lcdfree_ck = {
    .name	= "dma_lcdfree_ck",
    .parent	= &tc_ck,
    .flags	= CLOCK_IN_OMAP16XX | ALWAYS_ENABLED,
};

static struct clk api_ck = {
    .name	= "api_ck",
    .alias	= "mpui_ck",
    .parent	= &tc_ck,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | CLOCK_IN_OMAP310,
};

static struct clk lb_ck = {
    .name	= "lb_ck",
    .parent	= &tc_ck,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP310,
};

static struct clk lbfree_ck = {
    .name	= "lbfree_ck",
    .parent	= &tc_ck,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP310,
};

static struct clk hsab_ck = {
    .name	= "hsab_ck",
    .parent	= &tc_ck,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP310,
};

static struct clk rhea1_ck = {
    .name	= "rhea1_ck",
    .parent	= &tc_ck,
    .flags	= CLOCK_IN_OMAP16XX | ALWAYS_ENABLED,
};

static struct clk rhea2_ck = {
    .name	= "rhea2_ck",
    .parent	= &tc_ck,
    .flags	= CLOCK_IN_OMAP16XX | ALWAYS_ENABLED,
};

static struct clk lcd_ck_16xx = {
    .name	= "lcd_ck",
    .parent	= &clkm3,
    .flags	= CLOCK_IN_OMAP16XX | CLOCK_IN_OMAP730,
};

static struct clk lcd_ck_1510 = {
    .name	= "lcd_ck",
    .parent	= &clkm3,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP310,
};

static struct clk uart1_1510 = {
    .name	= "uart1_ck",
    /* Direct from ULPD, no real parent */
    .parent	= &armper_ck,	/* either armper_ck or dpll4 */
    .rate	= 12000000,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP310 | ALWAYS_ENABLED,
};

static struct clk uart1_16xx = {
    .name	= "uart1_ck",
    /* Direct from ULPD, no real parent */
    .parent	= &armper_ck,
    .rate	= 48000000,
    .flags	= CLOCK_IN_OMAP16XX,
};

static struct clk uart2_ck = {
    .name	= "uart2_ck",
    /* Direct from ULPD, no real parent */
    .parent	= &armper_ck,	/* either armper_ck or dpll4 */
    .rate	= 12000000,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | CLOCK_IN_OMAP310 |
            ALWAYS_ENABLED,
};

static struct clk uart3_1510 = {
    .name	= "uart3_ck",
    /* Direct from ULPD, no real parent */
    .parent	= &armper_ck,	/* either armper_ck or dpll4 */
    .rate	= 12000000,
    .flags	= CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP310 | ALWAYS_ENABLED,
};

static struct clk uart3_16xx = {
    .name	= "uart3_ck",
    /* Direct from ULPD, no real parent */
    .parent	= &armper_ck,
    .rate	= 48000000,
    .flags	= CLOCK_IN_OMAP16XX,
};