| /* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| */ |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/io.h> |
| #include <mach/board.h> |
| |
| #include "acpuclock.h" |
| |
| /* Registers */ |
| #define PLL1_CTL_ADDR (MSM_CLK_CTL_BASE + 0x604) |
| |
| unsigned long acpuclk_get_rate(int cpu) |
| { |
| unsigned int pll1_ctl; |
| unsigned int pll1_l, pll1_div2; |
| unsigned int pll1_khz; |
| |
| pll1_ctl = readl_relaxed(PLL1_CTL_ADDR); |
| pll1_l = ((pll1_ctl >> 3) & 0x3f) * 2; |
| pll1_div2 = pll1_ctl & 0x20000; |
| pll1_khz = 19200 * pll1_l; |
| if (pll1_div2) |
| pll1_khz >>= 1; |
| |
| return pll1_khz; |
| } |
| |
| void __init msm_acpu_clock_init(struct msm_acpu_clock_platform_data *clkdata) |
| { |
| pr_info("ACPU running at %lu KHz\n", acpuclk_get_rate(0)); |
| } |