drivers/clk/qcom/clk-pll.h

   1 /*
   2  * Copyright (c) 2013, The Linux Foundation. All rights reserved.
   3  *
   4  * This software is licensed under the terms of the GNU General Public
   5  * License version 2, as published by the Free Software Foundation, and
   6  * may be copied, distributed, and modified under those terms.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13
  14 #ifndef __QCOM_CLK_PLL_H__
  15 #define __QCOM_CLK_PLL_H__
  16
  17 #include <linux/clk-provider.h>
  18 #include "clk-regmap.h"
  19
  20 /**
  21  * struct clk_pll - phase locked loop (PLL)
  22  * @l_reg: L register
  23  * @m_reg: M register
  24  * @n_reg: N register
  25  * @config_reg: config register
  26  * @mode_reg: mode register
  27  * @status_reg: status register
  28  * @status_bit: ANDed with @status_reg to determine if PLL is enabled
  29  * @hw: handle between common and hardware-specific interfaces
  30  */
  31 struct clk_pll {
  32         u32     l_reg;
  33         u32     m_reg;
  34         u32     n_reg;
  35         u32     config_reg;
  36         u32     mode_reg;
  37         u32     status_reg;
  38         u8      status_bit;
  39
  40         struct clk_regmap clkr;
  41 };
  42
  43 extern const struct clk_ops clk_pll_ops;
  44 extern const struct clk_ops clk_pll_vote_ops;
  45
  46 #define to_clk_pll(_hw) container_of(to_clk_regmap(_hw), struct clk_pll, clkr)
  47
  48 struct pll_config {
  49         u16 l;
  50         u32 m;
  51         u32 n;
  52         u32 vco_val;
  53         u32 vco_mask;
  54         u32 pre_div_val;
  55         u32 pre_div_mask;
  56         u32 post_div_val;
  57         u32 post_div_mask;
  58         u32 mn_ena_mask;
  59         u32 main_output_mask;
  60         u32 aux_output_mask;
  61 };
  62
  63 void clk_pll_configure_sr_hpm_lp(struct clk_pll *pll, struct regmap *regmap,
  64                 const struct pll_config *config, bool fsm_mode);
  65
  66 #endif