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1 | /* |
2 | * clock2430.c - OMAP2430-specific clock integration code | |
3 | * | |
4 | * Copyright (C) 2005-2008 Texas Instruments, Inc. | |
5 | * Copyright (C) 2004-2010 Nokia Corporation | |
6 | * | |
7 | * Contacts: | |
8 | * Richard Woodruff <r-woodruff2@ti.com> | |
9 | * Paul Walmsley | |
10 | * | |
11 | * Based on earlier work by Tuukka Tikkanen, Tony Lindgren, | |
12 | * Gordon McNutt and RidgeRun, Inc. | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License version 2 as | |
16 | * published by the Free Software Foundation. | |
17 | */ | |
18 | #undef DEBUG | |
19 | ||
20 | #include <linux/kernel.h> | |
21 | #include <linux/clk.h> | |
22 | #include <linux/io.h> | |
23 | ||
24 | #include <plat/clock.h> | |
25 | ||
26 | #include "clock.h" | |
27 | #include "clock2xxx.h" | |
28 | #include "cm.h" | |
29 | #include "cm-regbits-24xx.h" | |
30 | ||
31 | /** | |
32 | * omap2430_clk_i2chs_find_idlest - return CM_IDLEST info for 2430 I2CHS | |
33 | * @clk: struct clk * being enabled | |
34 | * @idlest_reg: void __iomem ** to store CM_IDLEST reg address into | |
35 | * @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into | |
36 | * @idlest_val: pointer to a u8 to store the CM_IDLEST indicator | |
37 | * | |
38 | * OMAP2430 I2CHS CM_IDLEST bits are in CM_IDLEST1_CORE, but the | |
39 | * CM_*CLKEN bits are in CM_{I,F}CLKEN2_CORE. This custom function | |
40 | * passes back the correct CM_IDLEST register address for I2CHS | |
41 | * modules. No return value. | |
42 | */ | |
43 | static void omap2430_clk_i2chs_find_idlest(struct clk *clk, | |
44 | void __iomem **idlest_reg, | |
45 | u8 *idlest_bit, | |
46 | u8 *idlest_val) | |
47 | { | |
48 | *idlest_reg = OMAP2430_CM_REGADDR(CORE_MOD, CM_IDLEST); | |
49 | *idlest_bit = clk->enable_bit; | |
50 | *idlest_val = OMAP24XX_CM_IDLEST_VAL; | |
51 | } | |
52 | ||
53 | /* 2430 I2CHS has non-standard IDLEST register */ | |
54 | const struct clkops clkops_omap2430_i2chs_wait = { | |
55 | .enable = omap2_dflt_clk_enable, | |
56 | .disable = omap2_dflt_clk_disable, | |
57 | .find_idlest = omap2430_clk_i2chs_find_idlest, | |
58 | .find_companion = omap2_clk_dflt_find_companion, | |
59 | }; |