drm/amd/powerplay: update ppatomctrl.c (v2)

used for calculating memory clocks in powerplay.

v2: handle endian swapping of atom data (Alex)

Signed-off-by: Eric Huang <JinHuiEric.Huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/hwmgr/ppatomctrl.c

@@ -23,6 +23,7 @@
 #include "pp_debug.h"
 #include <linux/module.h>
 #include <linux/slab.h>
+#include <linux/delay.h>
 #include "atom.h"
 #include "ppatomctrl.h"
 #include "atombios.h"
@@ -314,6 +315,36 @@ int atomctrl_get_memory_pll_dividers_vi(struct pp_hwmgr *hwmgr,
 	return result;
 }
 
+int atomctrl_get_memory_pll_dividers_ai(struct pp_hwmgr *hwmgr,
+					uint32_t clock_value,
+					pp_atomctrl_memory_clock_param_ai *mpll_param)
+{
+	struct amdgpu_device *adev = hwmgr->adev;
+	COMPUTE_MEMORY_CLOCK_PARAM_PARAMETERS_V2_3 mpll_parameters = {0};
+	int result;
+
+	mpll_parameters.ulClock.ulClock = cpu_to_le32(clock_value);
+
+	result = amdgpu_atom_execute_table(adev->mode_info.atom_context,
+			GetIndexIntoMasterTable(COMMAND, ComputeMemoryClockParam),
+			(uint32_t *)&mpll_parameters);
+
+	/* VEGAM's mpll takes sometime to finish computing */
+	udelay(10);
+
+	if (!result) {
+		mpll_param->ulMclk_fcw_int =
+			le16_to_cpu(mpll_parameters.usMclk_fcw_int);
+		mpll_param->ulMclk_fcw_frac =
+			le16_to_cpu(mpll_parameters.usMclk_fcw_frac);
+		mpll_param->ulClock =
+			le32_to_cpu(mpll_parameters.ulClock.ulClock);
+		mpll_param->ulPostDiv = mpll_parameters.ulClock.ucPostDiv;
+	}
+
+	return result;
+}
+
 int atomctrl_get_engine_pll_dividers_kong(struct pp_hwmgr *hwmgr,
 					  uint32_t clock_value,
 					  pp_atomctrl_clock_dividers_kong *dividers)

drivers/gpu/drm/amd/powerplay/hwmgr/ppatomctrl.h

@@ -146,6 +146,14 @@ struct pp_atomctrl_memory_clock_param {
 };
 typedef struct pp_atomctrl_memory_clock_param pp_atomctrl_memory_clock_param;
 
+struct pp_atomctrl_memory_clock_param_ai {
+	uint32_t ulClock;
+	uint32_t ulPostDiv;
+	uint16_t ulMclk_fcw_frac;
+	uint16_t ulMclk_fcw_int;
+};
+typedef struct pp_atomctrl_memory_clock_param_ai pp_atomctrl_memory_clock_param_ai;
+
 struct pp_atomctrl_internal_ss_info {
 	uint32_t speed_spectrum_percentage;                      /* in 1/100 percentage */
 	uint32_t speed_spectrum_rate;                            /* in KHz */
@@ -295,6 +303,8 @@ extern bool atomctrl_is_voltage_controlled_by_gpio_v3(struct pp_hwmgr *hwmgr, ui
 extern int atomctrl_get_voltage_table_v3(struct pp_hwmgr *hwmgr, uint8_t voltage_type, uint8_t voltage_mode, pp_atomctrl_voltage_table *voltage_table);
 extern int atomctrl_get_memory_pll_dividers_vi(struct pp_hwmgr *hwmgr,
 		uint32_t clock_value, pp_atomctrl_memory_clock_param *mpll_param);
+extern int atomctrl_get_memory_pll_dividers_ai(struct pp_hwmgr *hwmgr,
+		uint32_t clock_value, pp_atomctrl_memory_clock_param_ai *mpll_param);
 extern int atomctrl_get_engine_pll_dividers_kong(struct pp_hwmgr *hwmgr,
 						 uint32_t clock_value,
 						 pp_atomctrl_clock_dividers_kong *dividers);