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clock.h
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1 /*
2  * linux/arch/arm/mach-omap1/clock.h
3  *
4  * Copyright (C) 2004 - 2005, 2009 Nokia corporation
5  * Written by Tuukka Tikkanen <[email protected]>
6  * Based on clocks.h by Tony Lindgren, Gordon McNutt and RidgeRun, Inc
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License version 2 as
10  * published by the Free Software Foundation.
11  */
12 
13 #ifndef __ARCH_ARM_MACH_OMAP1_CLOCK_H
14 #define __ARCH_ARM_MACH_OMAP1_CLOCK_H
15 
16 #include <linux/clk.h>
17 
18 #include <plat/clock.h>
19 
20 int omap1_clk_init(void);
21 void omap1_clk_late_init(void);
22 extern int omap1_clk_enable(struct clk *clk);
23 extern void omap1_clk_disable(struct clk *clk);
24 extern long omap1_clk_round_rate(struct clk *clk, unsigned long rate);
25 extern int omap1_clk_set_rate(struct clk *clk, unsigned long rate);
26 extern unsigned long omap1_ckctl_recalc(struct clk *clk);
27 extern int omap1_set_sossi_rate(struct clk *clk, unsigned long rate);
28 extern unsigned long omap1_sossi_recalc(struct clk *clk);
29 extern unsigned long omap1_ckctl_recalc_dsp_domain(struct clk *clk);
30 extern int omap1_clk_set_rate_dsp_domain(struct clk *clk, unsigned long rate);
31 extern int omap1_set_uart_rate(struct clk *clk, unsigned long rate);
32 extern unsigned long omap1_uart_recalc(struct clk *clk);
33 extern int omap1_set_ext_clk_rate(struct clk *clk, unsigned long rate);
34 extern long omap1_round_ext_clk_rate(struct clk *clk, unsigned long rate);
35 extern void omap1_init_ext_clk(struct clk *clk);
36 extern int omap1_select_table_rate(struct clk *clk, unsigned long rate);
37 extern long omap1_round_to_table_rate(struct clk *clk, unsigned long rate);
38 extern int omap1_clk_set_rate_ckctl_arm(struct clk *clk, unsigned long rate);
39 extern long omap1_clk_round_rate_ckctl_arm(struct clk *clk, unsigned long rate);
40 extern unsigned long omap1_watchdog_recalc(struct clk *clk);
41 
42 #ifdef CONFIG_OMAP_RESET_CLOCKS
43 extern void omap1_clk_disable_unused(struct clk *clk);
44 #else
45 #define omap1_clk_disable_unused NULL
46 #endif
47 
48 struct uart_clk {
49  struct clk clk;
50  unsigned long sysc_addr;
51 };
52 
53 /* Provide a method for preventing idling some ARM IDLECT clocks */
55  struct clk clk;
56  unsigned long no_idle_count;
58 };
59 
60 /* ARM_CKCTL bit shifts */
61 #define CKCTL_PERDIV_OFFSET 0
62 #define CKCTL_LCDDIV_OFFSET 2
63 #define CKCTL_ARMDIV_OFFSET 4
64 #define CKCTL_DSPDIV_OFFSET 6
65 #define CKCTL_TCDIV_OFFSET 8
66 #define CKCTL_DSPMMUDIV_OFFSET 10
67 /*#define ARM_TIMXO 12*/
68 #define EN_DSPCK 13
69 /*#define ARM_INTHCK_SEL 14*/ /* Divide-by-2 for mpu inth_ck */
70 /* DSP_CKCTL bit shifts */
71 #define CKCTL_DSPPERDIV_OFFSET 0
72 
73 /* ARM_IDLECT2 bit shifts */
74 #define EN_WDTCK 0
75 #define EN_XORPCK 1
76 #define EN_PERCK 2
77 #define EN_LCDCK 3
78 #define EN_LBCK 4 /* Not on 1610/1710 */
79 /*#define EN_HSABCK 5*/
80 #define EN_APICK 6
81 #define EN_TIMCK 7
82 #define DMACK_REQ 8
83 #define EN_GPIOCK 9 /* Not on 1610/1710 */
84 /*#define EN_LBFREECK 10*/
85 #define EN_CKOUT_ARM 11
86 
87 /* ARM_IDLECT3 bit shifts */
88 #define EN_OCPI_CK 0
89 #define EN_TC1_CK 2
90 #define EN_TC2_CK 4
91 
92 /* DSP_IDLECT2 bit shifts (0,1,2 are same as for ARM_IDLECT2) */
93 #define EN_DSPTIMCK 5
94 
95 /* Various register defines for clock controls scattered around OMAP chip */
96 #define SDW_MCLK_INV_BIT 2 /* In ULPD_CLKC_CTRL */
97 #define USB_MCLK_EN_BIT 4 /* In ULPD_CLKC_CTRL */
98 #define USB_HOST_HHC_UHOST_EN 9 /* In MOD_CONF_CTRL_0 */
99 #define SWD_ULPD_PLL_CLK_REQ 1 /* In SWD_CLK_DIV_CTRL_SEL */
100 #define COM_ULPD_PLL_CLK_REQ 1 /* In COM_CLK_DIV_CTRL_SEL */
101 #define SWD_CLK_DIV_CTRL_SEL 0xfffe0874
102 #define COM_CLK_DIV_CTRL_SEL 0xfffe0878
103 #define SOFT_REQ_REG 0xfffe0834
104 #define SOFT_REQ_REG2 0xfffe0880
105 
106 extern __u32 arm_idlect1_mask;
107 extern struct clk *api_ck_p, *ck_dpll1_p, *ck_ref_p;
108 
109 extern const struct clkops clkops_dspck;
110 extern const struct clkops clkops_dummy;
111 extern const struct clkops clkops_uart_16xx;
112 extern const struct clkops clkops_generic;
113 
114 /* used for passing SoC type to omap1_{select,round_to}_table_rate() */
115 extern u32 cpu_mask;
116 
117 #endif