drivers/clk/socfpga/clk.h

   1 /*
   2  * Copyright (c) 2013, Steffen Trumtrar <s.trumtrar@pengutronix.de>
   3  *
   4  * based on drivers/clk/tegra/clk.h
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  */
  16
  17 #ifndef __SOCFPGA_CLK_H
  18 #define __SOCFPGA_CLK_H
  19
  20 #include <linux/clk-provider.h>
  21
  22 /* Clock Manager offsets */
  23 #define CLKMGR_CTRL             0x0
  24 #define CLKMGR_BYPASS           0x4
  25 #define CLKMGR_DBCTRL           0x10
  26 #define CLKMGR_L4SRC            0x70
  27 #define CLKMGR_PERPLL_SRC       0xAC
  28
  29 #define SOCFPGA_MAX_PARENTS             5
  30
  31 #define streq(a, b) (strcmp((a), (b)) == 0)
  32 #define SYSMGR_SDMMC_CTRL_SET(smplsel, drvsel) \
  33         ((((smplsel) & 0x7) << 3) | (((drvsel) & 0x7) << 0))
  34
  35 #define SYSMGR_SDMMC_CTRL_SET_AS10(smplsel, drvsel) \
  36         ((((smplsel) & 0x7) << 4) | (((drvsel) & 0x7) << 0))
  37
  38 extern void __iomem *clk_mgr_base_addr;
  39 extern void __iomem *clk_mgr_a10_base_addr;
  40
  41 void __init socfpga_pll_init(struct device_node *node);
  42 void __init socfpga_periph_init(struct device_node *node);
  43 void __init socfpga_gate_init(struct device_node *node);
  44 void socfpga_a10_pll_init(struct device_node *node);
  45 void socfpga_a10_periph_init(struct device_node *node);
  46 void socfpga_a10_gate_init(struct device_node *node);
  47
  48 struct socfpga_pll {
  49         struct clk_gate hw;
  50 };
  51
  52 struct socfpga_gate_clk {
  53         struct clk_gate hw;
  54         char *parent_name;
  55         u32 fixed_div;
  56         void __iomem *div_reg;
  57         void __iomem *bypass_reg;
  58         struct regmap *sys_mgr_base_addr;
  59         u32 width;      /* only valid if div_reg != 0 */
  60         u32 shift;      /* only valid if div_reg != 0 */
  61         u32 bypass_shift;      /* only valid if bypass_reg != 0 */
  62         u32 clk_phase[2];
  63 };
  64
  65 struct socfpga_periph_clk {
  66         struct clk_gate hw;
  67         char *parent_name;
  68         u32 fixed_div;
  69         void __iomem *div_reg;
  70         void __iomem *bypass_reg;
  71         u32 width;      /* only valid if div_reg != 0 */
  72         u32 shift;      /* only valid if div_reg != 0 */
  73         u32 bypass_shift;      /* only valid if bypass_reg != 0 */
  74 };
  75
  76 #endif /* SOCFPGA_CLK_H */