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Diffstat (limited to 'arch/arm/mach-omap/clock.h')
| -rw-r--r-- | arch/arm/mach-omap/clock.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/arch/arm/mach-omap/clock.h b/arch/arm/mach-omap/clock.h new file mode 100644 index 00000000000..08c0ddde183 --- /dev/null +++ b/arch/arm/mach-omap/clock.h @@ -0,0 +1,112 @@ +/* + * linux/arch/arm/mach-omap/clock.h + * + * Copyright (C) 2004 Nokia corporation + * Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com> + * 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_OMAP_CLOCK_H +#define __ARCH_ARM_OMAP_CLOCK_H + +struct module; + +struct clk { + struct list_head node; + struct module *owner; + const char *name; + struct clk *parent; + unsigned long rate; + __s8 usecount; + __u16 flags; + __u32 enable_reg; + __u8 enable_bit; + __u8 rate_offset; + void (*recalc)(struct clk *); + int (*set_rate)(struct clk *, unsigned long); + long (*round_rate)(struct clk *, unsigned long); + void (*init)(struct clk *); +}; + + +struct mpu_rate { + unsigned long rate; + unsigned long xtal; + unsigned long pll_rate; + __u16 ckctl_val; + __u16 dpllctl_val; +}; + + +/* Clock flags */ +#define RATE_CKCTL 1 +#define RATE_FIXED 2 +#define RATE_PROPAGATES 4 +#define VIRTUAL_CLOCK 8 +#define ALWAYS_ENABLED 16 +#define ENABLE_REG_32BIT 32 +#define CLOCK_IN_OMAP16XX 64 +#define CLOCK_IN_OMAP1510 128 +#define CLOCK_IN_OMAP730 256 + +/* 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 */ + +/* ARM_IDLECT1 bit shifts */ +/*#define IDLWDT_ARM 0*/ +/*#define IDLXORP_ARM 1*/ +/*#define IDLPER_ARM 2*/ +/*#define IDLLCD_ARM 3*/ +/*#define IDLLB_ARM 4*/ +/*#define IDLHSAB_ARM 5*/ +/*#define IDLIF_ARM 6*/ +/*#define IDLDPLL_ARM 7*/ +/*#define IDLAPI_ARM 8*/ +/*#define IDLTIM_ARM 9*/ +/*#define SETARM_IDLE 11*/ + +/* 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 + +/* Various register defines for clock controls scattered around OMAP chip */ +#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 + + +int clk_register(struct clk *clk); +void clk_unregister(struct clk *clk); +int clk_init(void); + +#endif |