LXR linux/drivers/clk/microchip/clk-core.h

   1/*
   2 * Purna Chandra Mandal,<purna.mandal@microchip.com>
   3 * Copyright (C) 2015 Microchip Technology Inc.  All rights reserved.
   4 *
   5 * This program is free software; you can distribute it and/or modify it
   6 * under the terms of the GNU General Public License (Version 2) as
   7 * published by the Free Software Foundation.
   8 *
   9 * This program is distributed in the hope it will be useful, but WITHOUT
  10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12 * for more details.
  13 */
  14#ifndef __MICROCHIP_CLK_PIC32_H_
  15#define __MICROCHIP_CLK_PIC32_H_
  16
  17#include <linux/clk-provider.h>
  18
  19/* PIC32 clock data */
  20struct pic32_clk_common {
  21        struct device *dev;
  22        void __iomem *iobase;
  23        spinlock_t reg_lock; /* clock lock */
  24};
  25
  26/* System PLL clock */
  27struct pic32_sys_pll_data {
  28        struct clk_init_data init_data;
  29        const u32 ctrl_reg;
  30        const u32 status_reg;
  31        const u32 lock_mask;
  32};
  33
  34/* System clock */
  35struct pic32_sys_clk_data {
  36        struct clk_init_data init_data;
  37        const u32 mux_reg;
  38        const u32 slew_reg;
  39        const u32 *parent_map;
  40        const u32 slew_div;
  41};
  42
  43/* Reference Oscillator clock */
  44struct pic32_ref_osc_data {
  45        struct clk_init_data init_data;
  46        const u32 ctrl_reg;
  47        const u32 *parent_map;
  48};
  49
  50/* Peripheral Bus clock */
  51struct pic32_periph_clk_data {
  52        struct clk_init_data init_data;
  53        const u32 ctrl_reg;
  54};
  55
  56/* External Secondary Oscillator clock  */
  57struct pic32_sec_osc_data {
  58        struct clk_init_data init_data;
  59        const u32 enable_reg;
  60        const u32 status_reg;
  61        const u32 enable_mask;
  62        const u32 status_mask;
  63        const unsigned long fixed_rate;
  64};
  65
  66extern const struct clk_ops pic32_pbclk_ops;
  67extern const struct clk_ops pic32_sclk_ops;
  68extern const struct clk_ops pic32_sclk_no_div_ops;
  69extern const struct clk_ops pic32_spll_ops;
  70extern const struct clk_ops pic32_roclk_ops;
  71extern const struct clk_ops pic32_sosc_ops;
  72
  73struct clk *pic32_periph_clk_register(const struct pic32_periph_clk_data *data,
  74                                      struct pic32_clk_common *core);
  75struct clk *pic32_refo_clk_register(const struct pic32_ref_osc_data *data,
  76                                    struct pic32_clk_common *core);
  77struct clk *pic32_sys_clk_register(const struct pic32_sys_clk_data *data,
  78                                   struct pic32_clk_common *core);
  79struct clk *pic32_spll_clk_register(const struct pic32_sys_pll_data *data,
  80                                    struct pic32_clk_common *core);
  81struct clk *pic32_sosc_clk_register(const struct pic32_sec_osc_data *data,
  82                                    struct pic32_clk_common *core);
  83
  84#endif /* __MICROCHIP_CLK_PIC32_H_*/
  85