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 */
  20 struct pic32_clk_common {
  21         struct device *dev;
  22         void __iomem *iobase;
  23         spinlock_t reg_lock; /* clock lock */
  24 };
  25
  26 /* System PLL clock */
  27 struct 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 */
  35 struct 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 */
  44 struct 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 */
  51 struct pic32_periph_clk_data {
  52         struct clk_init_data init_data;
  53         const u32 ctrl_reg;
  54 };
  55
  56 /* External Secondary Oscillator clock  */
  57 struct 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
  66 extern const struct clk_ops pic32_pbclk_ops;
  67 extern const struct clk_ops pic32_sclk_ops;
  68 extern const struct clk_ops pic32_sclk_no_div_ops;
  69 extern const struct clk_ops pic32_spll_ops;
  70 extern const struct clk_ops pic32_roclk_ops;
  71 extern const struct clk_ops pic32_sosc_ops;
  72
  73 struct clk *pic32_periph_clk_register(const struct pic32_periph_clk_data *data,
  74                                       struct pic32_clk_common *core);
  75 struct clk *pic32_refo_clk_register(const struct pic32_ref_osc_data *data,
  76                                     struct pic32_clk_common *core);
  77 struct clk *pic32_sys_clk_register(const struct pic32_sys_clk_data *data,
  78                                    struct pic32_clk_common *core);
  79 struct clk *pic32_spll_clk_register(const struct pic32_sys_pll_data *data,
  80                                     struct pic32_clk_common *core);
  81 struct 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_*/