From: Alex Deucher <alexander.deucher@amd.com>
Date: Sat, 14 Nov 2015 03:00:01 +0000 (-0500)
Subject: drm/amd/powerplay: add atomctrl function to calculate CZ sclk dividers
X-Git-Tag: v4.5-rc1~74^2~19^2~42
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=d39d5c2c9dcfb9e9aec2be154784a12f5b4a6c97;p=linux-2.6-block.git

drm/amd/powerplay: add atomctrl function to calculate CZ sclk dividers

Use atombios to calculate the values.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/ppatomctrl.c b/drivers/gpu/drm/amd/powerplay/hwmgr/ppatomctrl.c
index 8b47ea0c8d3e..ea87c9088b32 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/ppatomctrl.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/ppatomctrl.c
@@ -313,6 +313,28 @@ int atomctrl_get_memory_pll_dividers_vi(struct pp_hwmgr *hwmgr,
 	return result;
 }
 
+int atomctrl_get_engine_pll_dividers_kong(struct pp_hwmgr *hwmgr,
+					  uint32_t clock_value,
+					  pp_atomctrl_clock_dividers_kong *dividers)
+{
+	COMPUTE_MEMORY_ENGINE_PLL_PARAMETERS_V4 pll_parameters;
+	int result;
+
+	pll_parameters.ulClock = clock_value;
+
+	result = cgs_atom_exec_cmd_table
+		(hwmgr->device,
+		 GetIndexIntoMasterTable(COMMAND, ComputeMemoryEnginePLL),
+		 &pll_parameters);
+
+	if (0 == result) {
+		dividers->pll_post_divider = pll_parameters.ucPostDiv;
+		dividers->real_clock = pll_parameters.ulClock;
+	}
+
+	return result;
+}
+
 int atomctrl_get_engine_pll_dividers_vi(
 		struct pp_hwmgr *hwmgr,
 		uint32_t clock_value,
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/ppatomctrl.h b/drivers/gpu/drm/amd/powerplay/hwmgr/ppatomctrl.h
index b5ba37151190..627420b80a5f 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/ppatomctrl.h
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/ppatomctrl.h
@@ -233,6 +233,9 @@ extern bool atomctrl_is_voltage_controled_by_gpio_v3(struct pp_hwmgr *hwmgr, uin
 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_engine_pll_dividers_kong(struct pp_hwmgr *hwmgr,
+						 uint32_t clock_value,
+						 pp_atomctrl_clock_dividers_kong *dividers);
 extern int atomctrl_read_efuse(void *device, uint16_t start_index,
 		uint16_t end_index, uint32_t mask, uint32_t *efuse);
 extern int atomctrl_calculate_voltage_evv_on_sclk(struct pp_hwmgr *hwmgr, uint8_t voltage_type,