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26 #ifndef __DAL_AUX_ENGINE_DCE110_H__
27 #define __DAL_AUX_ENGINE_DCE110_H__
28 #include "aux_engine.h"
30 #define AUX_COMMON_REG_LIST(id)\
31 SRI(AUX_CONTROL, DP_AUX, id), \
32 SRI(AUX_ARB_CONTROL, DP_AUX, id), \
33 SRI(AUX_SW_DATA, DP_AUX, id), \
34 SRI(AUX_SW_CONTROL, DP_AUX, id), \
35 SRI(AUX_INTERRUPT_CONTROL, DP_AUX, id), \
36 SRI(AUX_SW_STATUS, DP_AUX, id), \
40 struct dce110_aux_registers {
42 uint32_t AUX_ARB_CONTROL;
44 uint32_t AUX_SW_CONTROL;
45 uint32_t AUX_INTERRUPT_CONTROL;
46 uint32_t AUX_SW_STATUS;
50 uint32_t AUX_RESET_MASK;
53 enum { /* This is the timeout as defined in DP 1.2a,
54 * 2.3.4 "Detailed uPacket TX AUX CH State Description".
56 AUX_TIMEOUT_PERIOD = 400,
58 /* Ideally, the SW timeout should be just above 550usec
59 * which is programmed in HW.
60 * But the SW timeout of 600usec is not reliable,
61 * because on some systems, delay_in_microseconds()
62 * returns faster than it should.
63 * EPR #379763: by trial-and-error on different systems,
64 * 700usec is the minimum reliable SW timeout for polling
65 * the AUX_SW_STATUS.AUX_SW_DONE bit.
66 * This timeout expires *only* when there is
67 * AUX Error or AUX Timeout conditions - not during normal operation.
68 * During normal operation, AUX_SW_STATUS.AUX_SW_DONE bit is set
69 * at most within ~240usec. That means,
70 * increasing this timeout will not affect normal operation,
71 * and we'll timeout after
72 * SW_AUX_TIMEOUT_PERIOD_MULTIPLIER * AUX_TIMEOUT_PERIOD = 2400usec.
73 * This timeout is especially important for
74 * converters, resume from S3, and CTS.
76 SW_AUX_TIMEOUT_PERIOD_MULTIPLIER = 6
78 struct aux_engine_dce110 {
79 struct aux_engine base;
80 const struct dce110_aux_registers *regs;
83 uint32_t aux_arb_control;
85 uint32_t aux_sw_control;
86 uint32_t aux_interrupt_control;
87 uint32_t aux_sw_status;
89 uint32_t timeout_period;
92 struct aux_engine_dce110_init_data {
94 uint32_t timeout_period;
95 struct dc_context *ctx;
96 const struct dce110_aux_registers *regs;
99 struct aux_engine *dce110_aux_engine_construct(
100 struct aux_engine_dce110 *aux_engine110,
101 struct dc_context *ctx,
103 uint32_t timeout_period,
104 const struct dce110_aux_registers *regs);
106 void dce110_engine_destroy(struct aux_engine **engine);
108 bool dce110_aux_engine_acquire(
109 struct aux_engine *aux_engine,