root/include/linux/platform_data/ti-sysc.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 
   3 #ifndef __TI_SYSC_DATA_H__
   4 #define __TI_SYSC_DATA_H__
   5 
   6 enum ti_sysc_module_type {
   7         TI_SYSC_OMAP2,
   8         TI_SYSC_OMAP2_TIMER,
   9         TI_SYSC_OMAP3_SHAM,
  10         TI_SYSC_OMAP3_AES,
  11         TI_SYSC_OMAP4,
  12         TI_SYSC_OMAP4_TIMER,
  13         TI_SYSC_OMAP4_SIMPLE,
  14         TI_SYSC_OMAP34XX_SR,
  15         TI_SYSC_OMAP36XX_SR,
  16         TI_SYSC_OMAP4_SR,
  17         TI_SYSC_OMAP4_MCASP,
  18         TI_SYSC_OMAP4_USB_HOST_FS,
  19         TI_SYSC_DRA7_MCAN,
  20 };
  21 
  22 struct ti_sysc_cookie {
  23         void *data;
  24         void *clkdm;
  25 };
  26 
  27 /**
  28  * struct sysc_regbits - TI OCP_SYSCONFIG register field offsets
  29  * @midle_shift: Offset of the midle bit
  30  * @clkact_shift: Offset of the clockactivity bit
  31  * @sidle_shift: Offset of the sidle bit
  32  * @enwkup_shift: Offset of the enawakeup bit
  33  * @srst_shift: Offset of the softreset bit
  34  * @autoidle_shift: Offset of the autoidle bit
  35  * @dmadisable_shift: Offset of the dmadisable bit
  36  * @emufree_shift; Offset of the emufree bit
  37  *
  38  * Note that 0 is a valid shift, and for ti-sysc.c -ENODEV can be used if a
  39  * feature is not available.
  40  */
  41 struct sysc_regbits {
  42         s8 midle_shift;
  43         s8 clkact_shift;
  44         s8 sidle_shift;
  45         s8 enwkup_shift;
  46         s8 srst_shift;
  47         s8 autoidle_shift;
  48         s8 dmadisable_shift;
  49         s8 emufree_shift;
  50 };
  51 
  52 #define SYSC_QUIRK_CLKDM_NOAUTO         BIT(21)
  53 #define SYSC_QUIRK_FORCE_MSTANDBY       BIT(20)
  54 #define SYSC_MODULE_QUIRK_AESS          BIT(19)
  55 #define SYSC_MODULE_QUIRK_SGX           BIT(18)
  56 #define SYSC_MODULE_QUIRK_HDQ1W         BIT(17)
  57 #define SYSC_MODULE_QUIRK_I2C           BIT(16)
  58 #define SYSC_MODULE_QUIRK_WDT           BIT(15)
  59 #define SYSS_QUIRK_RESETDONE_INVERTED   BIT(14)
  60 #define SYSC_QUIRK_SWSUP_MSTANDBY       BIT(13)
  61 #define SYSC_QUIRK_SWSUP_SIDLE_ACT      BIT(12)
  62 #define SYSC_QUIRK_SWSUP_SIDLE          BIT(11)
  63 #define SYSC_QUIRK_EXT_OPT_CLOCK        BIT(10)
  64 #define SYSC_QUIRK_LEGACY_IDLE          BIT(9)
  65 #define SYSC_QUIRK_RESET_STATUS         BIT(8)
  66 #define SYSC_QUIRK_NO_IDLE              BIT(7)
  67 #define SYSC_QUIRK_NO_IDLE_ON_INIT      BIT(6)
  68 #define SYSC_QUIRK_NO_RESET_ON_INIT     BIT(5)
  69 #define SYSC_QUIRK_OPT_CLKS_NEEDED      BIT(4)
  70 #define SYSC_QUIRK_OPT_CLKS_IN_RESET    BIT(3)
  71 #define SYSC_QUIRK_16BIT                BIT(2)
  72 #define SYSC_QUIRK_UNCACHED             BIT(1)
  73 #define SYSC_QUIRK_USE_CLOCKACT         BIT(0)
  74 
  75 #define SYSC_NR_IDLEMODES               4
  76 
  77 /**
  78  * struct sysc_capabilities - capabilities for an interconnect target module
  79  * @type: sysc type identifier for the module
  80  * @sysc_mask: bitmask of supported SYSCONFIG register bits
  81  * @regbits: bitmask of SYSCONFIG register bits
  82  * @mod_quirks: bitmask of module specific quirks
  83  */
  84 struct sysc_capabilities {
  85         const enum ti_sysc_module_type type;
  86         const u32 sysc_mask;
  87         const struct sysc_regbits *regbits;
  88         const u32 mod_quirks;
  89 };
  90 
  91 /**
  92  * struct sysc_config - configuration for an interconnect target module
  93  * @sysc_val: configured value for sysc register
  94  * @syss_mask: configured mask value for SYSSTATUS register
  95  * @midlemodes: bitmask of supported master idle modes
  96  * @sidlemodes: bitmask of supported slave idle modes
  97  * @srst_udelay: optional delay needed after OCP soft reset
  98  * @quirks: bitmask of enabled quirks
  99  */
 100 struct sysc_config {
 101         u32 sysc_val;
 102         u32 syss_mask;
 103         u8 midlemodes;
 104         u8 sidlemodes;
 105         u8 srst_udelay;
 106         u32 quirks;
 107 };
 108 
 109 enum sysc_registers {
 110         SYSC_REVISION,
 111         SYSC_SYSCONFIG,
 112         SYSC_SYSSTATUS,
 113         SYSC_MAX_REGS,
 114 };
 115 
 116 /**
 117  * struct ti_sysc_module_data - ti-sysc to hwmod translation data for a module
 118  * @name: legacy "ti,hwmods" module name
 119  * @module_pa: physical address of the interconnect target module
 120  * @module_size: size of the interconnect target module
 121  * @offsets: array of register offsets as listed in enum sysc_registers
 122  * @nr_offsets: number of registers
 123  * @cap: interconnect target module capabilities
 124  * @cfg: interconnect target module configuration
 125  *
 126  * This data is enough to allocate a new struct omap_hwmod_class_sysconfig
 127  * based on device tree data parsed by ti-sysc driver.
 128  */
 129 struct ti_sysc_module_data {
 130         const char *name;
 131         u64 module_pa;
 132         u32 module_size;
 133         int *offsets;
 134         int nr_offsets;
 135         const struct sysc_capabilities *cap;
 136         struct sysc_config *cfg;
 137 };
 138 
 139 struct device;
 140 struct clk;
 141 
 142 struct ti_sysc_platform_data {
 143         struct of_dev_auxdata *auxdata;
 144         int (*init_clockdomain)(struct device *dev, struct clk *fck,
 145                                 struct clk *ick, struct ti_sysc_cookie *cookie);
 146         void (*clkdm_deny_idle)(struct device *dev,
 147                                 const struct ti_sysc_cookie *cookie);
 148         void (*clkdm_allow_idle)(struct device *dev,
 149                                  const struct ti_sysc_cookie *cookie);
 150         int (*init_module)(struct device *dev,
 151                            const struct ti_sysc_module_data *data,
 152                            struct ti_sysc_cookie *cookie);
 153         int (*enable_module)(struct device *dev,
 154                              const struct ti_sysc_cookie *cookie);
 155         int (*idle_module)(struct device *dev,
 156                            const struct ti_sysc_cookie *cookie);
 157         int (*shutdown_module)(struct device *dev,
 158                                const struct ti_sysc_cookie *cookie);
 159 };
 160 
 161 #endif  /* __TI_SYSC_DATA_H__ */