1/* Copyright (c) 2009, Code Aurora Forum. All rights reserved. 2 * 3 * Redistribution and use in source and binary forms, with or without 4 * modification, are permitted provided that the following conditions are 5 * met: 6 * * Redistributions of source code must retain the above copyright 7 * notice, this list of conditions and the following disclaimer. 8 * * Redistributions in binary form must reproduce the above 9 * copyright notice, this list of conditions and the following 10 * disclaimer in the documentation and/or other materials provided 11 * with the distribution. 12 * * Neither the name of Code Aurora Forum, Inc. nor the names of its 13 * contributors may be used to endorse or promote products derived 14 * from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 23 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 25 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 26 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 */ 29#ifndef __MACH_CLK_H 30#define __MACH_CLK_H 31 32/* Magic rate value for use with PM QOS to request the board's maximum 33 * supported AXI rate. PM QOS will only pass positive s32 rate values 34 * through to the clock driver, so INT_MAX is used. 35 */ 36#define MSM_AXI_MAX_FREQ LONG_MAX 37 38enum clk_reset_action { 39 CLK_RESET_DEASSERT = 0, 40 CLK_RESET_ASSERT = 1 41}; 42 43struct clk; 44 45/* Rate is minimum clock rate in Hz */ 46int clk_set_min_rate(struct clk *clk, unsigned long rate); 47 48/* Rate is maximum clock rate in Hz */ 49int clk_set_max_rate(struct clk *clk, unsigned long rate); 50 51/* Assert/Deassert reset to a hardware block associated with a clock */ 52int clk_reset(struct clk *clk, enum clk_reset_action action); 53 54/* Set clock-specific configuration parameters */ 55int clk_set_flags(struct clk *clk, unsigned long flags); 56 57#endif 58