cm.h 2.8 KB

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  1. /* SPDX-License-Identifier: GPL-2.0-only */
  2. /*
  3. * OMAP2+ Clock Management prototypes
  4. *
  5. * Copyright (C) 2007-2009, 2012 Texas Instruments, Inc.
  6. * Copyright (C) 2007-2009 Nokia Corporation
  7. *
  8. * Written by Paul Walmsley
  9. */
  10. #ifndef __ARCH_ASM_MACH_OMAP2_CM_H
  11. #define __ARCH_ASM_MACH_OMAP2_CM_H
  12. /*
  13. * MAX_MODULE_READY_TIME: max duration in microseconds to wait for the
  14. * PRCM to request that a module exit the inactive state in the case of
  15. * OMAP2 & 3.
  16. * In the case of OMAP4 this is the max duration in microseconds for the
  17. * module to reach the functionnal state from an inactive state.
  18. */
  19. #define MAX_MODULE_READY_TIME 2000
  20. # ifndef __ASSEMBLER__
  21. #include <linux/clk/ti.h>
  22. #include "prcm-common.h"
  23. extern struct omap_domain_base cm_base;
  24. extern struct omap_domain_base cm2_base;
  25. # endif
  26. /*
  27. * MAX_MODULE_DISABLE_TIME: max duration in microseconds to wait for
  28. * the PRCM to request that a module enter the inactive state in the
  29. * case of OMAP2 & 3. In the case of OMAP4 this is the max duration
  30. * in microseconds for the module to reach the inactive state from
  31. * a functional state.
  32. * XXX FSUSB on OMAP4430 takes ~4ms to idle after reset during
  33. * kernel init.
  34. */
  35. #define MAX_MODULE_DISABLE_TIME 5000
  36. # ifndef __ASSEMBLER__
  37. /**
  38. * struct cm_ll_data - fn ptrs to per-SoC CM function implementations
  39. * @split_idlest_reg: ptr to the SoC CM-specific split_idlest_reg impl
  40. * @wait_module_ready: ptr to the SoC CM-specific wait_module_ready impl
  41. * @wait_module_idle: ptr to the SoC CM-specific wait_module_idle impl
  42. * @module_enable: ptr to the SoC CM-specific module_enable impl
  43. * @module_disable: ptr to the SoC CM-specific module_disable impl
  44. * @xlate_clkctrl: ptr to the SoC CM-specific clkctrl xlate addr impl
  45. */
  46. struct cm_ll_data {
  47. int (*split_idlest_reg)(struct clk_omap_reg *idlest_reg, s16 *prcm_inst,
  48. u8 *idlest_reg_id);
  49. int (*wait_module_ready)(u8 part, s16 prcm_mod, u16 idlest_reg,
  50. u8 idlest_shift);
  51. int (*wait_module_idle)(u8 part, s16 prcm_mod, u16 idlest_reg,
  52. u8 idlest_shift);
  53. void (*module_enable)(u8 mode, u8 part, u16 inst, u16 clkctrl_offs);
  54. void (*module_disable)(u8 part, u16 inst, u16 clkctrl_offs);
  55. u32 (*xlate_clkctrl)(u8 part, u16 inst, u16 clkctrl_offs);
  56. };
  57. extern int cm_split_idlest_reg(struct clk_omap_reg *idlest_reg, s16 *prcm_inst,
  58. u8 *idlest_reg_id);
  59. int omap_cm_wait_module_ready(u8 part, s16 prcm_mod, u16 idlest_reg,
  60. u8 idlest_shift);
  61. int omap_cm_wait_module_idle(u8 part, s16 prcm_mod, u16 idlest_reg,
  62. u8 idlest_shift);
  63. int omap_cm_module_enable(u8 mode, u8 part, u16 inst, u16 clkctrl_offs);
  64. int omap_cm_module_disable(u8 part, u16 inst, u16 clkctrl_offs);
  65. u32 omap_cm_xlate_clkctrl(u8 part, u16 inst, u16 clkctrl_offs);
  66. extern int cm_register(const struct cm_ll_data *cld);
  67. extern int cm_unregister(const struct cm_ll_data *cld);
  68. int omap_cm_init(void);
  69. int omap2_cm_base_init(void);
  70. # endif
  71. #endif