/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mach-omap1/clock.h * * Copyright (C) 2004 - 2005, 2009 Nokia corporation * Written by Tuukka Tikkanen * Based on clocks.h by Tony Lindgren, Gordon McNutt and RidgeRun, Inc */ #ifndef __ARCH_ARM_MACH_OMAP1_CLOCK_H #define __ARCH_ARM_MACH_OMAP1_CLOCK_H #include #include #include struct module; struct omap1_clk; struct omap_clk { u16 cpu; struct clk_lookup lk; }; #define CLK(dev, con, ck, cp) \ { \ .cpu = cp, \ .lk = { \ .dev_id = dev, \ .con_id = con, \ .clk_hw = ck, \ }, \ } /* Platform flags for the clkdev-OMAP integration code */ #define CK_310 (1 << 0) #define CK_7XX (1 << 1) /* 7xx, 850 */ #define CK_1510 (1 << 2) #define CK_16XX (1 << 3) /* 16xx, 17xx, 5912 */ #define CK_1710 (1 << 4) /* 1710 extra for rate selection */ /** * struct clkops - some clock function pointers * @enable: fn ptr that enables the current clock in hardware * @disable: fn ptr that enables the current clock in hardware * @allow_idle: fn ptr that enables autoidle for the current clock in hardware */ struct clkops { int (*enable)(struct omap1_clk *clk); void (*disable)(struct omap1_clk *clk); }; /* * struct clk.flags possibilities * * XXX document the rest of the clock flags here */ #define ENABLE_REG_32BIT (1 << 0) /* Use 32-bit access */ #define CLOCK_IDLE_CONTROL (1 << 1) #define CLOCK_NO_IDLE_PARENT (1 << 2) /** * struct omap1_clk - OMAP1 struct clk * @hw: struct clk_hw for common clock framework integration * @ops: struct clkops * for this clock * @rate: current clock rate * @enable_reg: register to write to enable the clock (see @enable_bit) * @recalc: fn ptr that returns the clock's current rate * @set_rate: fn ptr that can change the clock's current rate * @round_rate: fn ptr that can round the clock's current rate * @init: fn ptr to do clock-specific initialization * @enable_bit: bitshift to write to enable/disable the clock (see @enable_reg) * @fixed_div: when > 0, this clock's rate is its parent's rate / @fixed_div * @flags: see "struct clk.flags possibilities" above * @rate_offset: bitshift for rate selection bitfield (OMAP1 only) */ struct omap1_clk { struct clk_hw hw; const struct clkops *ops; unsigned long rate; void __iomem *enable_reg; unsigned long (*recalc)(struct omap1_clk *clk, unsigned long rate); int (*set_rate)(struct omap1_clk *clk, unsigned long rate, unsigned long p_rate); long (*round_rate)(struct omap1_clk *clk, unsigned long rate, unsigned long *p_rate); int (*init)(struct omap1_clk *clk); u8 enable_bit; u8 fixed_div; u8 flags; u8 rate_offset; }; #define to_omap1_clk(_hw) container_of(_hw, struct omap1_clk, hw) void propagate_rate(struct omap1_clk *clk); unsigned long followparent_recalc(struct omap1_clk *clk, unsigned long p_rate); unsigned long omap_fixed_divisor_recalc(struct omap1_clk *clk, unsigned long p_rate); extern struct omap1_clk dummy_ck; int omap1_clk_init(void); void omap1_clk_late_init(void); unsigned long omap1_ckctl_recalc(struct omap1_clk *clk, unsigned long p_rate); long omap1_round_sossi_rate(struct omap1_clk *clk, unsigned long rate, unsigned long *p_rate); int omap1_set_sossi_rate(struct omap1_clk *clk, unsigned long rate, unsigned long p_rate); unsigned long omap1_sossi_recalc(struct omap1_clk *clk, unsigned long p_rate); unsigned long omap1_ckctl_recalc_dsp_domain(struct omap1_clk *clk, unsigned long p_rate); int omap1_clk_set_rate_dsp_domain(struct omap1_clk *clk, unsigned long rate, unsigned long p_rate); long omap1_round_uart_rate(struct omap1_clk *clk, unsigned long rate, unsigned long *p_rate); int omap1_set_uart_rate(struct omap1_clk *clk, unsigned long rate, unsigned long p_rate); unsigned long omap1_uart_recalc(struct omap1_clk *clk, unsigned long p_rate); int omap1_set_ext_clk_rate(struct omap1_clk *clk, unsigned long rate, unsigned long p_rate); long omap1_round_ext_clk_rate(struct omap1_clk *clk, unsigned long rate, unsigned long *p_rate); int omap1_init_ext_clk(struct omap1_clk *clk); int omap1_select_table_rate(struct omap1_clk *clk, unsigned long rate, unsigned long p_rate); long omap1_round_to_table_rate(struct omap1_clk *clk, unsigned long rate, unsigned long *p_rate); int omap1_clk_set_rate_ckctl_arm(struct omap1_clk *clk, unsigned long rate, unsigned long p_rate); long omap1_clk_round_rate_ckctl_arm(struct omap1_clk *clk, unsigned long rate, unsigned long *p_rate); struct uart_clk { struct omap1_clk clk; unsigned long sysc_addr; }; /* Provide a method for preventing idling some ARM IDLECT clocks */ struct arm_idlect1_clk { struct omap1_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 omap1_clk *api_ck_p, *ck_dpll1_p, *ck_ref_p; extern const struct clkops clkops_dspck; 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; extern const struct clk_ops omap1_clk_null_ops; extern const struct clk_ops omap1_clk_gate_ops; extern const struct clk_ops omap1_clk_rate_ops; extern const struct clk_ops omap1_clk_full_ops; #endif