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26 #include "dcn32_clk_mgr_smu_msg.h"
28 #include "clk_mgr_internal.h"
29 #include "reg_helper.h"
31 #include "smu13_driver_if.h"
33 #define mmDAL_MSG_REG 0x1628A
34 #define mmDAL_ARG_REG 0x16273
35 #define mmDAL_RESP_REG 0x16274
37 #define DALSMC_MSG_TransferTableDram2Smu 0x8
39 #define REG(reg_name) \
42 #include "logger_types.h"
44 #define smu_print(str, ...) {DC_LOG_SMU(str, ##__VA_ARGS__); }
48 * Function to be used instead of REG_WAIT macro because the wait ends when
49 * the register is NOT EQUAL to zero, and because the translation in msg_if.h
50 * won't work with REG_WAIT.
52 static uint32_t dcn32_smu_wait_for_response(struct clk_mgr_internal *clk_mgr, unsigned int delay_us, unsigned int max_retries)
57 reg = REG_READ(DAL_RESP_REG);
62 msleep(delay_us/1000);
63 else if (delay_us > 0)
65 } while (max_retries--);
70 static bool dcn32_smu_send_msg_with_param(struct clk_mgr_internal *clk_mgr, uint32_t msg_id, uint32_t param_in, uint32_t *param_out)
72 /* Wait for response register to be ready */
73 dcn32_smu_wait_for_response(clk_mgr, 10, 200000);
75 /* Clear response register */
76 REG_WRITE(DAL_RESP_REG, 0);
78 /* Set the parameter register for the SMU message */
79 REG_WRITE(DAL_ARG_REG, param_in);
81 /* Trigger the message transaction by writing the message ID */
82 REG_WRITE(DAL_MSG_REG, msg_id);
84 /* Wait for response */
85 if (dcn32_smu_wait_for_response(clk_mgr, 10, 200000) == DALSMC_Result_OK) {
87 *param_out = REG_READ(DAL_ARG_REG);
95 void dcn32_smu_send_fclk_pstate_message(struct clk_mgr_internal *clk_mgr, bool enable)
97 smu_print("FCLK P-state support value is : %d\n", enable);
99 dcn32_smu_send_msg_with_param(clk_mgr,
100 DALSMC_MSG_SetFclkSwitchAllow, enable ? FCLK_PSTATE_SUPPORTED : FCLK_PSTATE_NOTSUPPORTED, NULL);
103 void dcn32_smu_send_cab_for_uclk_message(struct clk_mgr_internal *clk_mgr, unsigned int num_ways)
105 smu_print("Numways for SubVP : %d\n", num_ways);
107 dcn32_smu_send_msg_with_param(clk_mgr, DALSMC_MSG_SetCabForUclkPstate, num_ways, NULL);
110 void dcn32_smu_transfer_wm_table_dram_2_smu(struct clk_mgr_internal *clk_mgr)
112 smu_print("SMU Transfer WM table DRAM 2 SMU\n");
114 dcn32_smu_send_msg_with_param(clk_mgr,
115 DALSMC_MSG_TransferTableDram2Smu, TABLE_WATERMARKS, NULL);
118 /* Returns the actual frequency that was set in MHz, 0 on failure */
119 unsigned int dcn32_smu_set_hard_min_by_freq(struct clk_mgr_internal *clk_mgr, uint32_t clk, uint16_t freq_mhz)
121 uint32_t response = 0;
123 /* bits 23:16 for clock type, lower 16 bits for frequency in MHz */
124 uint32_t param = (clk << 16) | freq_mhz;
126 smu_print("SMU Set hard min by freq: clk = %d, freq_mhz = %d MHz\n", clk, freq_mhz);
128 dcn32_smu_send_msg_with_param(clk_mgr,
129 DALSMC_MSG_SetHardMinByFreq, param, &response);
131 smu_print("SMU Frequency set = %d KHz\n", response);