video: driver: add scale clocks and buses functions

Add clocks and buses scaling functionality.

Change-Id: Ifa61043a938bc5c1990f6baf1777a3f2270fc77d
Signed-off-by: Maheshwar Ajja <majja@codeaurora.org>

driver/variant/iris2/inc/msm_vidc_power_iris2.h

@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ */
+
+#ifndef __H_MSM_VIDC_POWER_IRIS2_H__
+#define __H_MSM_VIDC_POWER_IRIS2_H__
+
+#include "msm_vidc_inst.h"
+
+u64 msm_vidc_calc_freq_iris2(struct msm_vidc_inst* inst);
+u64 msm_vidc_calc_bw_iris2(struct msm_vidc_inst* inst);
+
+#endif

driver/variant/iris2/src/msm_vidc_iris2.c

@@ -7,6 +7,7 @@
 
 #include "msm_vidc_iris2.h"
 #include "msm_vidc_buffer_iris2.h"
+#include "msm_vidc_power_iris2.h"
 #include "venus_hfi.h"
 #include "msm_vidc_inst.h"
 #include "msm_vidc_core.h"

driver/variant/iris2/src/msm_vidc_power_iris2.c

@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ */
+
+#include "msm_vidc_power_iris2.h"
+#include "msm_vidc_inst.h"
+#include "msm_vidc_debug.h"
+
+u64 msm_vidc_calc_freq_iris2(struct msm_vidc_inst *inst)
+{
+	u64 freq = 0;
+
+	/* 240 Mhz for iris2 based video hw */
+	freq = 240 * 1000 * 1000;
+	s_vpr_h(inst->sid, "%s: freq %lu\n", __func__, freq);
+
+	return freq;
+}
+
+u64 msm_vidc_calc_bw_iris2(struct msm_vidc_inst *inst)
+{
+	u64 freq = 0;
+
+	/* 600 Mhz for iris2 based video hw */
+	freq = 600 * 1000 * 1000;
+	s_vpr_h(inst->sid, "%s: freq %lu\n", __func__, freq);
+
+	return freq;
+}