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26 #ifndef __DAL_AUX_ENGINE_DCE110_H__
27 #define __DAL_AUX_ENGINE_DCE110_H__
29 #include "i2caux_interface.h"
30 #include "inc/hw/aux_engine.h"
32 #ifdef CONFIG_DRM_AMD_DC_DCN2_0
33 #define AUX_COMMON_REG_LIST0(id)\
34 SRI(AUX_CONTROL, DP_AUX, id), \
35 SRI(AUX_ARB_CONTROL, DP_AUX, id), \
36 SRI(AUX_SW_DATA, DP_AUX, id), \
37 SRI(AUX_SW_CONTROL, DP_AUX, id), \
38 SRI(AUX_INTERRUPT_CONTROL, DP_AUX, id), \
39 SRI(AUX_SW_STATUS, DP_AUX, id)
42 #define AUX_COMMON_REG_LIST(id)\
43 SRI(AUX_CONTROL, DP_AUX, id), \
44 SRI(AUX_ARB_CONTROL, DP_AUX, id), \
45 SRI(AUX_SW_DATA, DP_AUX, id), \
46 SRI(AUX_SW_CONTROL, DP_AUX, id), \
47 SRI(AUX_INTERRUPT_CONTROL, DP_AUX, id), \
48 SRI(AUX_SW_STATUS, DP_AUX, id), \
52 struct dce110_aux_registers {
54 uint32_t AUX_ARB_CONTROL;
56 uint32_t AUX_SW_CONTROL;
57 uint32_t AUX_INTERRUPT_CONTROL;
58 uint32_t AUX_SW_STATUS;
62 uint32_t AUX_RESET_MASK;
65 enum { /* This is the timeout as defined in DP 1.2a,
66 * 2.3.4 "Detailed uPacket TX AUX CH State Description".
68 AUX_TIMEOUT_PERIOD = 400,
70 /* Ideally, the SW timeout should be just above 550usec
71 * which is programmed in HW.
72 * But the SW timeout of 600usec is not reliable,
73 * because on some systems, delay_in_microseconds()
74 * returns faster than it should.
75 * EPR #379763: by trial-and-error on different systems,
76 * 700usec is the minimum reliable SW timeout for polling
77 * the AUX_SW_STATUS.AUX_SW_DONE bit.
78 * This timeout expires *only* when there is
79 * AUX Error or AUX Timeout conditions - not during normal operation.
80 * During normal operation, AUX_SW_STATUS.AUX_SW_DONE bit is set
81 * at most within ~240usec. That means,
82 * increasing this timeout will not affect normal operation,
83 * and we'll timeout after
84 * SW_AUX_TIMEOUT_PERIOD_MULTIPLIER * AUX_TIMEOUT_PERIOD = 2400usec.
85 * This timeout is especially important for
86 * converters, resume from S3, and CTS.
88 SW_AUX_TIMEOUT_PERIOD_MULTIPLIER = 6
94 struct dc_context *ctx;
95 /* following values are expressed in milliseconds */
97 uint32_t max_defer_write_retry;
102 struct aux_engine_dce110 {
104 const struct dce110_aux_registers *regs;
106 uint32_t aux_control;
107 uint32_t aux_arb_control;
108 uint32_t aux_sw_data;
109 uint32_t aux_sw_control;
110 uint32_t aux_interrupt_control;
111 uint32_t aux_sw_status;
113 uint32_t timeout_period;
116 struct aux_engine_dce110_init_data {
118 uint32_t timeout_period;
119 struct dc_context *ctx;
120 const struct dce110_aux_registers *regs;
123 struct dce_aux *dce110_aux_engine_construct(
124 struct aux_engine_dce110 *aux_engine110,
125 struct dc_context *ctx,
127 uint32_t timeout_period,
128 const struct dce110_aux_registers *regs);
130 void dce110_engine_destroy(struct dce_aux **engine);
132 bool dce110_aux_engine_acquire(
133 struct dce_aux *aux_engine,
136 int dce_aux_transfer_raw(struct ddc_service *ddc,
137 struct aux_payload *cmd,
138 enum aux_channel_operation_result *operation_result);
140 bool dce_aux_transfer_with_retries(struct ddc_service *ddc,
141 struct aux_payload *cmd);