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 */ 43static 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 */ 54const 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}; 60